Pursuant to Labor Code, Sections 1813, Contractor s hall forfeit to the City, as a penalty, twenty-five dollars ($25.00) for each worker employ ed in the execution of this Agreement by Contractor, or any Subcontractor in violation of the terms of this Section or in violation of the provision of any law of the State of Califor nia. Such forfeiture amounts may be deducted from the contract sum. Contractor and eac h Subcontractor shall keep, or cause to be kept, an accurate record showing the ac tual hours worked each calendar day and each calendar week by each worker employed on t he project, which record shall be kept open at all reasonable hours to the inspection of the City, its officers and agents, and to the inspection of the appropriate enforcement agency of the State of California. (d) Prevailing Wage – As identified in the Notice to Bidders, the work contemplated by this agreement is a public work subject to prevailing wa ges under California Labor Code, Sections 1720 et. seq. The State of California Depa rtment of Industrial Relations has ascertained the general prevailing per diem wage ra tes in the locality in which the work is to be performed for each craft, classification, or type of worker required to perform the work. A schedule of the most recent general prevai ling per diem wage rates made available to the City will be on file at the City’s principal facility office and will be made available to any interested party upon request. Th is prevailing wage rate schedule is provided by the City for Bidder’s information only and is not guaranteed by the City to be current. Contractor is obligated to verify all app ropriate prevailing wage rates and pay those rates as required. By this reference the ver ified current schedule of prevailing wage rates is made part of the Contract Documents. Contractor shall pay not less than the prevailing per diem wage rates, as specified in the schedule and any amendments thereto, to all workers employed by Contractor in t he execution of the work. Contractor shall cause all subcontracts to include the provisi on that all Subcontractors shall pay not less than the specified prevailing per diem wage ra tes to all workers employed by such Subcontractors in the execution of the work.
Contractor shall forfeit to the City, as a penalty, no more than fifty-dollars ($50.00) for each calendar day or portion thereof for each worke r that is paid less than the specified prevailing per diem wage rates for the work or craf t in which the worker is employed for any portion of the work done by Contractor or any S ubcontractor in violation of the provisions of the Labor Code, and in particular Sec tions 1770 to 1781 thereof, inclusive.
Such forfeiture amounts may be deducted from the co ntract sum. Contractor shall also pay to any worker who was paid less than the specif ied prevailing per diem wage rate for the work or craft for which the worker was employed for any portion of the work, for each
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calendar day, or portion thereof, for which the wor ker was paid less than the specified prevailing per diem wage rate, an amount equal to t he difference between the specified prevailing per diem wage rate and the amount which was paid to the worker.
The City will not recognize any claim for additiona l compensation because of the payment by the Contractor for any wage rate in exce ss of prevailing wage rates set forth in the Agreement, including payment in excess of th e prevailing wage for extra work paid by force account. The possibility of wage increase s is one of the elements to be considered by the Contractor in determining the Con tractor’s bid and will not, under any circumstances be considered as the basis of a claim against the City under the Agreement.
(e) Payroll Records - Pursuant to Labor Code, Sections 1776, Contractor a nd all Subcontractors shall keep an accurate payroll recor d, showing the name, address, social security number, job classification, straight time and overtime hours worked each day and week, and the actual per diem wages paid to each jo urneyman, apprentice, worker, or other employee employed in connection with the work . All payroll records shall be certified as being true and correct by Contractor o r Subcontractors keeping such records; and the payroll records shall be provided to the Ci ty no later than three weeks after closing of payroll. The Contractor and all Subcont ractors must also furnish electronic certified payroll records to the Labor Commisioner of the State of California, Department of Industrial Relations.
(f) Apprentice Program - Attention is directed to State of California Lab or Code, Sections 3095, 1777.5, 1777.6, and 1777.7 and Title 8, Calif ornia Code of Regulations, Section 200, and the applicable Sections that follow. Resp onsibility for compliance with these requirements lies with the Contractor. To ensure c ompliance and complete understanding of the law requiring apprentices, and specifically the required ratio thereunder, Contractor or Subcontractors should, wh ere some question exists, contact the Division of Apprenticeship Standards, 425 Golde n Gate Avenue, 4 th Floor, San Francisco, California, 94102 or one of its branch o ffices prior to commencement of the work. In the event Contractor willfully fails to c omply with this Section, it will be considered in violation of the requirements of the Contract.
Nothing contained herein shall be considered or int erpreted as prohibiting or preventing the hiring by Contractor or Subcontractors of journ eyworker trainees who may receive on- the-job training to enable them to achieve journeyw orker status in any craft or trade under standards other than those set forth for apprentices.
(g) Safety Program – the Contractor shall conform to the rules and re gulations pertaining to safety established by the California Division of In dustrial Safety and to all requirements as set forth in the State of California Constructi on Safety Orders (CAL-OSHA), and in particular, Article 3 of these Safety Orders, regar ding Accident Prevention and safety meetings. Within ten (10) working days following t he Notice of Award the Contractor shall provide a copy of the Contractor’s Safety Pla n. The price paid for the plan is included in the various contract items of work and no additional compensation will be made therefore.
9.06 Permits and Fees – Unless otherwise stated in the Special Provisions, the Contractor shall procure all permits, registrations and licens es, including a City business registration, pay all charges and fees, and give all notices necessary for lawful prosecution of the work. All permits, registratio ns, licenses, and other authorizations shall be secured in sufficient time to prevent delays to the work. The Contractor shall comply with the provisions of said permits, licenses and other authorizations. The contractor shall submit satisfactory proof to the C ity, prior to issuance of the Notice to Proceed, th at such permits, registrations or licenses are and will be in effect throughout the entire life of this contra ct. The contractor shall keep all permits, registrations and licenses posted on the job site.
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For City Capital Improvement Construction Projects, the Contractor shall obtain a “No Fee” encroachment and/or building permit. Contractor sh all coordinate through the Engineer to insure that all appropriate construction inspections occur.
9.07 Coordination and Cooperation - Construction wo rk by utility companies or other Contractors may be needed or may be occurring simul taneously within or adjacent to the limits of work for this project. The Contractor shall coordinate and cooperate with all other Contractors and utility companies throughout the duration of this project to avoid delays and minimize interference and conflicts. Cooperation will be required in the arrangement for the storage of materials, and in the detailed execution of the work.
It is the Contractor’s responsibility to ascertain the nature of work by others, coordinate the work, and install, modify, and maintain traffic control as necessary t o avoid interferences and delays on the constructio n activities. Failure of the Contractor to keep info rmed of the work progressing on the site and failur e to give written notice of lack of progress or defectiv e workmanship by others shall be construed as acceptance by the Contractor of the status of the w ork as being satisfactory for proper coordination w ith Contractor’s work.
Where the work of one trade joins or is on the othe r’s work, there shall be no lack of continuity or discrepancy when work is completed. In conforming one kind of work with another, marring or damaging other work will not be permitted. Should improper work of any trade be covered by another which resul ts in damage or defects, the whole work affected shall be made good by the Contractor without expense to the City.
The City reserves the right to perform work or allow others to perform work, as necessary, within or adjacent to the limits of this project, at any time . If the Contractor or any of the Subcontractors o r employees causes loss or damage to any separate Con tractor on the work, the Contractor, by agreement or arbitration, if they deems it necessary, will se ttle any claim for such loss or damage. If such se parate Contractor shall sue the City, on account of any lo ss so sustained, the City shall notify the Contract or, who shall indemnify and hold harmless the City agai nst any loss or damage arising therefrom, including the cost and expense of defending any such suit.
If any portions of the work specified herein are to be installed in any right-of–way owned by the State, County, Municipality, or other public entiti es or public utilities, it shall be incumbent upon the contractor to familiarize described above will nece ssarily be subject to their inspection and approval before acceptance of these portions of the work by the Engineer. Any costs for inspection by agents other than those of the City shall be borne by the contractor. Where other agencies have jurisdiction over some portion of the work, and the requirements of t he agencies are at variance with this specification , then that portion of the work shall be done in accordance with the requirements of the agency(ies).
The Contractor shall absorb in the bid all costs in volved in coordinating the work with others. The Contractor will not be entitled to additional compe nsation from the City for damages resulting from su ch simultaneous, collateral and essential work.
9.08 Use of Premises - The Contractor shall confine construction activities to the project limits; which shall consist of right-of-way, easements and/or property owned by the City of San Carlos. With prior approval of the Engineer, adjacent street right-of- way may also be utilized for day-to-day operations.
Unless approved by the Engineer, no storage of mate rials and equipment will be allowed to remain withi n the right-of-way during non-working hours, on the weekends, or during holidays.
Each day, after the completion of construction oper ations, unless otherwise approved by the Engineer, the project limits shall be secured and m ade accessible to the public. All excess materials and equipment not protected by approved traffic control devices (such as k-rails) shall be relocated to a staging area or demobilized. Trench spoils shall be off-ha uled daily and open excavations shall be protected with steel plates.
Personnel of Contractor and Subcontractors shall no t occupy, live upon, or otherwise make use of the project site during any time that work is no t being performed at the project site, except as ot herwise provided for in the Contract Documents for issues such as site security.
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9.09 Construction Staging and Field Office - If add itional space beyond the construction limits is necessary for staging, the Contractor shall, make special arrangements with neighboring property City(s) to secure a staging area for a field office and/or material and equipment storage, at Contractor’s expense. The staging area must be fenced, with screening, and sh all be operated in a manner that minimizes the inconvenience to neighbors.
The Contractor is encouraged to negotiate side agre ements with the property owners of such sites prior to submitting bids. Prior to occupying the staging area, the Contractor will be required to provide to the Engineer a copy of the agreement or temporar y construction easement granted by the property owner. A written release from the property owners or City, holding the City harmless from liability, will also need to be provided. In addition to approval from the property owners, the Contractor may also need t o secure a Use Permit from the City’s Planning Division.
9.10 Site Security - Contractor shall be responsibl e for the care and custody of work and the site, including all necessary security provisions, on a 24-hour per day basis throughout the entire te rm of the Agreement. The Contractor shall provide and ma intain storage facilities and employ such measures as will preserve the specified quality and fitness of materials to be used in the work.
9.11 Construction Water – The Contractor is respons ible for obtaining all water required for the project and shall work with, and obtain all permits from, the appropriate water purveyor prior to obta ining construction water. If hydrant water is to be used, the Contractor must first obtain a hydrant meter and pay all related expenses. Direct connections to hydran ts without a meter are not allowed. If water truck s are used, they shall be installed with backflow prevent ion devices. The cost of water, including all asso ciated fees, deposits or permits shall be incorporated into the various bid items and no separate payment shall be made. Water purveyors include:
California Water Service Company Mid-Penin sula Water District Bayshore District - Customer Center 3 Dairy Lane
341 North Delaware St. P.O. Box 129
San Mateo, CA 94401-1727 Belmont, CA 94002
M-F: 8 a.m. to 4:30 p.m. M-F: 8 a.m. to 4:30 p .m.
Tel.: (650) 558-7800 Tel.: (650) 591-8941
[email protected] midpeninsulawater.org
9.12 Project Site Maintenance – All work identified in this section shall be considered as part of the contract bid items, and no separate payment will be made thereof. (a) Disposal of Material - Unless otherwise shown on the plans or specified herein, all excess materials and materials removed from existing impro vements shall become the property of, and be disposed by the Contractor. The Contrac tor shall be responsible for all costs associated with disposing all excess materials in a safe and legal manner. No material shall be placed on private or public property witho ut prior approval from the City and the property owner. The Contractor shall not allow any refuse, excavated material, surplus concrete or mortar, or any associated washings, to be disposed upon paved streets, into manholes or into the City’s storm drain system.
Contractor shall establish a system for daily colle ction and disposal of waste materials from construction areas and elsewhere on the site. Contractor shall handle waste materials that are hazardous, dangerous, or unsanit ary separately from inert waste by containerizing appropriately. Burning or burying o f waste materials on site will not be permitted.
All materials removed from the existing improvement s, which in the opinion of the Engineer have salvage value, shall be delivered to the City Corporation Yard at 1000 Bransten Road, San Carlos, or at any other site des ignated by the Engineer within the City and shall be considered as part of the contrac t bid items, with no separate payment will be made thereof.
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(b) Cleanup and Dust Control – at all times during construction, including week ends and holidays, and throughout all phases of construction , including work suspensions and until final acceptance of the project, the Contractor sha ll keep the work site clean and free from rubbish, debris, and prevent the formation of an airborne dust nuisance.
Materials and equipment shall be removed from the s ite as soon as they are no longer necessary. Upon completion of the work and before final inspection, the entire site shall be cleared of equipment, unused materials, and rubb ish so as to present a satisfactory clean and neat appearance.
The Contractor shall abate dust nuisance by cleanin g, sweeping, and sprinkling with water, those excavated areas of dirt or other mater ials which are prone to causing dust, within both the project site and the storage or sta ging area. If required or directed by the Engineer, the Contractor shall provide an approved water truck of large capacity with spraying capability and/or street sweeper.
The Contractor shall be required to apply water for dust control immediately during construction efforts and within one (1) hour after notification by the Engineer that an airborne nuisance exists. If dust control is not a dequate, in the opinion of the Engineer, the Engineer will have this work performed by other s and will deduct such cost from the total contract price.
All hauling trucks or other construction vehicles leaving the site shall be cleaned of mud or dirt clinging to exterior body surfaces or wheel rims before traveling on City streets outside the work limits. All trucks coming to or leaving t he site with materials or loose debris shall be loaded in a manner, which will prevent the dropp ing of materials or debris on City streets. Spillage resulting from hauling operations along or across any public traveled way shall be removed immediately.
When construction operations cause dirt to be depos ited on public streets, the Contractor shall immediately remove such material. Streets sh all be cleaned by street sweeping, rather than flushing, so as to prevent mud from entering the storm drain system.
Excess excavated material shall be removed from the site immediately. Sufficient material may remain for use as backfill if permitte d by the specifications. Forms and form lumber shall be removed from the site as soon as practicable after stripping.
Failure of the Contractor to comply with the Engine er’s cleanup orders may result in an order to suspend work until the condition is correc ted. No additional compensation will be allowed as a result of such suspension.
(c) Air Pollution Control - The Contractor shall not discharge smoke, dust, or any other air contaminants into the atmosphere in such quantity a s will violate the regulations of any legally constituted authority.
(d) Noise Control - The Contractor shall make every reasonable effor t to control noise generated as a result of construction to the satisf action of the Engineer. Use of an air compressor, jackhammer or other loud, vibrating sou nd generating device shall be limited to operations between the hours of 8:00 a.m. and 6: 00 p.m. Monday thru Friday and between 9:00 a.m. to 5:00 p.m. on Saturday and Sund ay, unless otherwise authorized by the Engineer.
(e) Vermin Control - At the time of acceptance, structures entirely c onstructed under the contract shall be free of rodents, insects, vermin and pests. Necessary extermination work shall be arranged and paid for by the Contract or as part of the contract work within the contract time and shall be performed by a licen sed exterminator in accordance with requirements of governing authorities. The Contrac tor shall be liable for injury to persons or property and responsible for the elimination of offensive odors resulting from extermination operations.
(f) Sanitation - The Contractor shall provide and maintain enclose d toilets for the use of employees engaged in the work. These accommodation s shall be maintained in a neat
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and sanitary condition. They shall also comply wit h all applicable laws, ordinances and regulations pertaining to the public health and sanitation of dwellings and camps. (g) Wastewater - Wastewater systems shall not be interrupted. Sh ould the Contractor disrupt existing sewer facilities, the Contractor s hall immediately notify the Engineer, and the Contractor shall establish a plan, subject to t he approval of the City, to convey the sewage in closed conduits and disposed of it back i nto the sanitary sewer system.
Sewage shall not be permitted to flow in trenches or be covered by backfill. (h) Temporary Light, Power and Water - The Contractor shall furnish, install, maintain, and remove all temporary light, power, and water, inclu ding piping, wiring, lamps, and other equipment, necessary for the work at Contractor’s e xpense. The Contractor shall not draw water from any water source, except to extingu ish a fire, without first obtaining permission from the appropriate water utility company/agency. (i) Storm Water Pollution Control – All work shall conform to the National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction and Land Disturbance A ctivities (Order No. 2009-0009- DWQ, NPDES No. CAS000002) ("General Permit"), and t he NPDES Municipal Regional Stormwater Permit (MRP) (Order No. R2-2015-0049, NP DES No. CAS612008). The Contractor shall implement all applicable San Mateo Countywide Water Pollution Prevention Program (SMCWPPP) measures and Best Mana gement Practices (BMPs).
Failure to comply with the approved construction BM Ps will result in the issuance of correction notices, citations and/or a stop work order.
The Contractor shall submit to the City a Stormwate r Pollution Prevention Plan (SWPPP) or Water Pollution Control Plan (WPCP), prepared in compliance with all NPDES requirements. The SWPPP/WPCP prepared by the Contra ctor shall address how the Contractor will prevent materials from being rinsed or washed into the storm drain system and specify which BMPs will be implemented for prev enting sediment and pollutant discharges into the storm water system. The Contrac tor shall provide for the construction of facilities which may be required to prevent, control, and abate water pollution.
All construction efforts shall be conducted in a ma nner which prevents the release of hazardous material or hazardous waste into the soil or groundwater, and minimizes the discharge of pollutants into the storm drain system . No pollutants will be allowed to enter the storm drainage system. The Contractor shall be responsible for containing and removing any waste from the Contractor’s constructi on operations using the appropriate BMP. The Contractor shall be responsible for clean ing catch basins of solid or liquid waste materials originating from the Contractor’s o peration before this material migrates further into the storm drain system. Violation of this provision shall cause the City to issue a stop-work notice and take necessary action to require the Contractor to correct and comply with regulations. All costs related to the stop-work action and corrective work to come into compliance shall be fully borne by the Contractor.
Existing Drainage Conditions - If the work performe d interferes with established drainage patterns, ample provisions shall be made by the Con tractor to correct the interference.
The City may also direct the Contractor to take add itional measures to be performed at the Contractor 's expense.
Illicit Discharge - No dumping or discharge of cons truction materials, debris, and hazardous materials will be permitted into the City 's storm drainage system. In the event of any discharge, leakage, spill or emission of haz ardous materials, Contractor shall promptly notify the City and shall clean all affect ed property. The Contractor shall indemnify, hold harmless and defend the City agains t all liability incurred as a result of any such discharge, leakage, spill or emission, reg ardless of whether such liability, cost or expense arises during or after the term of the permit.
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9.13 Preservation of Property - The Contractor sha ll be responsible for the protection of public and private property adjacent to the work.
Due care shall be exercised to avoid damage to exis ting roadway improvements and facilities, adjacent property, roadside trees, lawn and shrubbe ry not designated for removal, pole lines, fences, signs, survey markers and monuments, buildings and structures, conduits, pipe lines under or above ground, sewer and water laterals, and any other imp rovements or facilities within or outside the limit s of construction. As ordered and approved by the Engin eer, the Contractor shall provide and install suita ble safeguards to protect such objects from injury or d amage. If such objects are injured or damaged by reason of the Contractor’s operations, they shall b e replaced or restored, at the Contractor’s expense , to a condition as good as when the Contractor entered upon the work, or as good as required by the Contract Documents.
Existing striping damaged during construction withi n and adjacent to the project site shall be replaced with thermoplastic. Partially damaged str iping (such as what might occur trenching through a pavement legend), shall be replaced in their entirety.
Contractor shall preserve carefully bench marks, re ference points, and stakes; in case of willful or careless destruction, will be charged with the resu lting expense of replacement and shall be responsib le for any mistakes that may be caused by their unnecessary loss or disturbance.
Any survey monuments that are damaged or removed as part of the construction shall be replaced by the Contractor and a Record of Survey, as requir ed by State law, shall be filed by a licensed Land Surveyor at the Contractor's expense.
The fact that any such improvement or facility is n ot shown upon the plans shall not relieve the Contractor of responsibility under this Section. I t shall be the Contractor’s responsibility to ascer tain the existence of any underground improvements or facili ties indicated on the plans, indicated by locating services, or as evidenced by facilities visible in the field.
Contractor shall protect the work, supplies and mat erials from damage due to the nature of the work, the action of the elements, trespassers, or a ny cause whatsoever which is under Contractor’s control, until the completion and acceptance of the work. Neither the City nor any of the City's agen ts assume any responsibility for collecting indemnity from any person(s) causing damage to the work of th e contractor.
9.14 Protection of Buried Utilities – When the Cont ractor's attention is directed to the existence of pipes, cables, culverts, and other underground s tructures and improvements which may or may not be shown on the plans, it is the responsibility of the contractor to ascertain the exact location of such underground utilities in advance of any digging ope rations so that they shall not be disturbed or dama ged by the Contractor during the progress of the work. All expenses of whatever nature arising from such disturbance or replacement or repair thereof shall be borne by the contractor.
If the location of pipelines being installed by the contractor under this contract conflicts with the location of existing pipelines, contractor shall so notify the Engineer in writing. The Engineer will ascertain the location of the existing utility in q uestion and may reuire relocatation of the pipeline being installed for the convenience of the Contractor. I t shall not be construed that the City or the Engin eer is in any way required or obligated to locate or reloc ate pipelines to locations other than shown on the contract plans. If the Engineer relocates pipeline s at the request of the contractor, the contractor shall bear all the expenses incurred in connection therew ith.
9.15 Protection of Bridges - Contractor shall be re sponsible for any damage they may cause to bridges, culverts and road structures. The Contrac tor shall determine in advance the allowable safe l oad for each structure and, if necessary, provide special shoring and support at Contractor’s expense.
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9.16 Protection of Traffic Signal Facilities - The Contractor shall give at least seventy-two (72) hours advance notice to the Engineer before commenc ing any street work (such as pavement grinding or trenching) that may potentially damage any traffic signal detection loop wires or any other signal fac ility.
This requirement is in addition to any Underground Services Alert notifications. The City will then m ark the underground traffic signal facilities.
The Contractor shall not proceed with any grinding, trenching or other underground work until it has been verified with the Inspector that signal facilities have been marked.
In the event that the Contractor's construction act ivities cause any failure of a traffic facility, it shall be repaired and be made fully operable within 24-hours of the damage occurring. In the event th at such repair is not undertaken within this time limi t, the City may repair the facility at the Contract or’s expense.
9.17 Restoration of Adjacent and Existing Improveme nts - Contractor shall do all cutting, fitting, or patching of the work required to make a ll parts of the work come together properly with ex isting and adjacent conditions.
Unless otherwise provided, the Contractor shall rep air or replace all existing improvements (e.g., curbs, sidewalks, driveways, fences, signs, utiliti es, street surfaces, structures, etc.) damaged or r emoved as a result of the Contract operations. Repairs an d replacements shall be at least equal to existing improvements, and shall match in terms of condition , finish and dimension to the satisfaction of the Engineer.
All Underground Services Alert (USA) markings, incl uding the initial markings made by the Contractor and those markings placed by others in r esponseshall be removed at the Contractor’s expense when they are no longer required. Acceptabl e means of removal include sand blasting, high pressure washing, or other means approved by the En gineer.
All traffic signs and street signs within the limit of work necessarily removed during the various phases of operations shall be temporarily reset by the Contractor at or near the original location upo n completion of each phase of construction operations . Prior to removal of all traffic control signs, t he Contractor shall submit photographs of the site whi ch show the existing location of these signs so tha t upon completion the photographs will aid in resetti ng the signs at or near their original location. T raffic control signs and street signs will be replaced upo n completion of the work and the cost of removal an d replacement shall be considered as part of the cont ract bid items, and no separate payment will be mad e thereof.
Rural type mail boxes shall be maintained by the Co ntractor in a manner satisfactory to the property owner and postal service, and the Contract or shall relocate the same as soon as possible to a permanent location in accordance with postal regula tions and in a location acceptable to the property owner.
Any object to be removed and reused at other locati ons shall be removed with due care and delivered or stored at the project’s construction s torage area, or if approved by the Engineer, at any other site designated by the Engineer within the City. S uch objects may consist of street light poles, sign al mast arms and other objects directed by the Enginee r. Items not approved by the Engineer for reuse purposes, and without salvage value, shall become t he property of the Contractor, to be disposed of at Contractor expense, in an acceptable manner.
9.18 Archeological Remains - If human and/or archeo logical remains are uncovered during excavation. All earthwork within one-hundred (100) feet of these materials will be stopped until a Co roner and/or professional archeologist (SCA) and/or the S ociety of Professional Archeology (SOPA) has had an opportunity to evaluate the significance of the find and suggest appropriate mitigation measures.
9.19 Access to Private Property - The Contractor sh all schedule and perform operations so as to minimize disruption of access to private propert y. Prior to blocking access to any private drivewa y or
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parking lot entrance, the Contractor shall notify t he residents, business owners or tenants of pending closure and allow residents to remove vehicles. Du ring non-working hours no driveway, house or parkin g lot shall be denied access to a public roadway.
The Contractor shall coordinate with the adjacent p roperty owners and businesses and maintain vehicle and pedestrian access to their properties a t all times. Temporary access ramps, fencing, or o ther measures shall be provided as needed.
9.20 Traffic Control and Public Convenience – The C ontractor shall provide for safe movement of all vehicular, bicycle and pedestrian traffic th rough and around the construction operations with a s little inconvenience and delay as possible. The Contracto r shall have no amount of work under construction other than what he can properly prosecute with due regard to the rights and convenience of the public.
Proper conveyance of vehicular traffic and pedestri ans through the work area depends upon navigating under unexpected situations. The means of clarifying such conditions to the public include the Contractor’s use of signs, flagmen, pavement markin gs, barricades, lights, cones and delineators. No one standard sequence of signs or control devices w ill suit all conditions which may result from construction operations. Even for the same work, t he conditions may vary from hour to hour, requiring adjustment and revisions of the traffic control in effect. The traffic control requirements specified herein are therefore intended to establish general princip les to be observed in the control and regulation of traffic through and around the construction operations anti cipated for this project. The requirements set for th in this Section represent the minimum traffic control requirements imposed and the Contractor shall be solely responsible for providing the full extent of traffic control measures that are necessary. Only individuals trained in the principles of implementi ng traffic control and/or traffic control flagging shall be assigned that responsibility at the work site.
(a) Traffic Control Plan – The Contractor shall submit a Traffic Control Pl an to clearly describe proposed traffic control measures. The pl an shall be generally in accordance with the illustrations included in the “California Manual of Uniform Traffic Control Devices” and the “Work Area Traffic Control Handbook”, (Buil ding News Incorporated P.O. Box 3031, Terminal Annex, Los Angeles, CA 90051). The submittal shall consist of scaled drawings for each situation anticipated to be encou ntered, i.e., intersections, mid-block (each during working and non-working hours), etc. The drawings shall show signs, traffic control devices and flagmen as required.
The Traffic Control Plan shall be directed equally to the regulation and protection of non- vehicular traffic including pedestrians, bicyclists , joggers, skaters, skateboarders, etc.
The Contractor shall provide for the protection and separation of non-vehicular traffic from construction operations at all times. No work involving the implementation of traffic control shall begin until the Engineer has reviewed and has no exception to the traffic control plans. The Contractor may implement a revi sed Traffic Control Plan only with subsequent review with no exceptions by the Engineer.
(b) Traffic Control Devices - Traffic control devices shall be provided in suf ficient quantities and types as required to provide safe and adequate traffic control. During hours of darkness, approved lights and/or flares shall be in cluded, in proper working order, to illuminate signs and hazards and alert approaching traffic. Barricades shall be furnished and maintained along all open trenches in contact w ith traffic. No work may begin on any day or at any time before traffic control devices h ave been placed, test driven and, if required, adjusted and revised. All traffic contro l devices shall be placed in accordance with the Manual of Uniform Traffic Control Devices and the Contractor’s favorably reviewed traffic control plans. Locations of devic es shall be adjusted to suit the conditions and circumstances of each detour situati on. In all cases, signs shall be placed to most effectively convey their messages to approaching traffic.
The Contractor shall maintain all traffic control d evices, at proper locations and in proper working order, at all times during construction ope rations and whenever a hazard resulting from Contractor’s operations exists. The Contractor shall adjust and revise traffic control devices, placement, etc., to suit c hanging conditions around construction
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operations. Traffic control devices shall remain i n place at all times, as required to alert approaching traffic of upcoming hazards. After haz ards have been removed, all traffic control devices shall be removed. Temporary signs shall be removed or their messages covered.
Daily traffic control measures shall continue until cleanup activities have been satisfactorily completed and all of the Contractor’ s equipment has been removed from the traveled way.
(c) Traffic Control Detours - The Contractor shall direct, divert and detour t raffic through, around and adjacent to construction operations in a ccordance with the traffic control plans specified in the Contract Documents or in acc ordance with the Contractor’s favorably reviewed traffic control plans.
1. Field Review of Detours - Immediately after traf fic control devices have been placed, the detour shall be test driven by the Engi neer or Inspector and the Contractor’s Superintendent. The test drive shall include approaches to the detour from each possible direction, and traverse t he full length of each detour route. The Contractor shall adjust and revise all traffic control devices as determined to be required by the test drive and the test drive shall be repeated, if determined necessary by the Engineer or Inspector. The Contractor shall provide additional traffic control devices as requi red to maintain the flow of traffic throughout construction operation.
2. Diverting Bicycle and Pedestrian Traffic – Whene ver construction operations obstruct the flow of bicycle and pedestrian traffic or present a hazard to bicycles and pedestrians, the Contractor shall take appropri ate action to protect and separate bicycles and pedestrians from the work are a. Such action may include placement of barricades between bicycles and pedest rians and the work areas, placement of warning signs, and provisions utilizin g personnel as required to protect and maintain access for bicycles and pedestrians as conditions warrant.
3. Diverting Vehicular Traffic - Whenever constru ction operations obstruct the flow of vehicular traffic or present a hazard to vehicle s operating in the vicinity of construction operations, the Contractor shall take appropriate action to warn, detour and otherwise protect approaching drivers and vehicles.
4. Flagmen - The Contractor shall employ flagmen as required for each specific detour and at all locations where barricades and wa rning signs cannot control the movement of traffic. A warning sign shall be place d ahead of the flagman reading: “Flagman Ahead.” The distance between the sign and the flagman should be based on the average traffic speed, allow ing approximately fifty (50) feet for each ten (10) miles per hour. During hour s of darkness, flagman stations shall be illuminated such that the flagman will be clearly visible to approaching traffic. Lights for illuminating the flagman stati on shall receive favorable review by the Engineer. The flagman shall wear a red or o range warning garment when flagging. Flagmen shall be provided with approved red flags or STOP/SLOW hand paddles, and two-way radios for communication. When flagging during hours of darkness, the flagman shall signal with a red light or flare and shall have a belt and suspender harness outside any garments f itted with reflectors or made from reflectorized cloth, unless the garment is wel l reflectorized in one of these ways.
5. Notice to Agencies - The Contractor shall notify the Engineer and all agencies having jurisdiction over the work, in writing, at l east ninety-six (96) hours, excluding holidays and weekends, prior to instituti ng any lane closure or detour.
At the end of each workday, the Contractor shall in form the Engineer, Police Department and Fire Departments of the status of al l detours, lane restrictions, or road closures. The Contractor shall cooperate and coordinate with the various parties involved in the collection and removal of t rash and garbage, the transit
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providers, the U.S. Postal Service, and others, as necessary, in order to maintain existing schedules and services.
6. Emergency Vehicle Access Through Detours - Durin g all detours and/or street closures the Contractor shall provide for the movem ent of emergency vehicles through the work area. It is essential that the Co ntractor’s work and equipment does not impede emergency access.
7. Night Detours - The Contractor shall not be perm itted to maintain any lane closure or road closure during non-working hours wi thout first obtaining written approval from the Engineer. During non-working hou rs the Contractor shall restore travel lanes to their original alignment an d configuration by means of placing temporary asphalt pavement or bridging with steel plates. The Contractor shall place “ROUGH ROAD” signs conformin g to the Manual of Uniform Traffic Control Devices at uneven temporary pavement or bridging locations. See General Provisions, Section 9.18 (b ), “Trench Safety Requirements”.
8. Temporary Traffic Lanes – Temporary traffic lane s shall be at least ten (10) feet wide, or eleven (11) feet wide around curves. Prov ide an additional two (2) feet of clearance from curbs. The length of temporary l anes should be limited to the area under construction and the distance necessary to divert traffic. (d) Parking Restrictions - The Contractor shall post approved “No Parking” s igns at all locations necessary to establish work areas and det our traffic. Signs shall read: “NO PARKING - CONSTRUCTION TOW-AWAY ZONE,” show the act ual day and hours of parking restriction and indicate the telephone numb er of the City’s Police Department or agency having jurisdiction. Signs shall be placed at least forty-eight (48) hours in advance of the restriction. The Engineer shall app rove the location and duration of no parking limits and verify their placement. The dura tion of no parking limits should not exceed two weeks, unless otherwise approved. “No Pa rking” signs shall be removed when no work is under construction and must be repo sted forty-eight (48) hours before the resumption of construction activities.
For any violation of “No Parking” signs by motorist s, the Contractor shall contact and coordinate directly with the City’s Police Department for remo val of vehicles in accordance with the California V ehicle Code. The Contractor shall also coordinate with th e Police Department directly for enforcement and towing of parked vehicles.
9.21 Safety - The Contractor shall be solely respon sible for initiating, maintaining, and supervising all safety precautions and programs in connection with the performance of the work. The Contractor’s responsibilities shall specifically pr ovide for the safety of persons involved in the pro ject, other persons who are affected by the performance o f the work, the work in place, materials and equipment to be incorporated in the work, the project site, and adjoining property.
The services of the City in conducting inspection o r construction review of the Contractor's performance is not intended to include review of th e adequacy of the Contractor's work methods, equipment, bracing, shoring or scaffolding, or safety measures, in, on, or near the construction site.
Safety vests and personal protection equipment shal l be worn by the Contractor, all subcontractors and other personnel when working or present on the site. Hard hats shall be worn when working around earthmoving or any heavy constructio n equipment or during any overhead construction work.
Payment for performing all work necessary to provid e safety measures shall be included in the bid items for which safety measures are required an d no additional compensation will be made. (a) Safety Orders – The Contractor shall have at the work site, copi es or suitable extracts of:
Construction Safety Orders, Tunnel Safety Orders, a nd General Industry Safety Orders
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issued by the State Division of Industrial Safety. The Contractor shall comply with provisions of these and all other applicable laws, ordinances, and regulations. (b) Trench Safety Requirement - As required by California Labor Code, Section 6705 and in addition thereto, for any excavation of any trench or trenches five (5’) feet or more in depth, the Contractor shall submit to the Engineer for review, a detailed plan showing the design of shoring, bracing, sloping, or other provi sions to be made for worker protection from the hazard of caving ground during the excavat ion of such trench or trenches.
Structural calculations prepared, stamped and signe d by a Registered Engineer licensed to practice in the State of California shall accomp any the plan to verify the structural safety and adequacy of the sheeting, shoring and br acing to be used on the project. No such plan shall allow any shoring, sloping or a pro tection system less effective than that required by the Construction Safety Orders of the S tate Division of Occupational Safety and Health.
The maximum length of open trench shall be three-hu ndred (300) feet or the distance that pipe can be installed in a single day as deter mined by the Engineer. Trenches shall be backfilled and covered with two (2) inches of cu tback (in paved areas) or bridged with tack-welded steel plates at the end of each workday . Cutback shall be placed around plate edges to provide a smooth transition and to secure against displacement.
As soon as possible under the provisions of these s pecifications, the Contractor shall backfill all excavations and restore to usefulness all improvements that existed prior to the start of construction.
(c) Confined Space Entry Program (CSEP) - Entry into permit-required confined spaces as defined in Section 5157, Title 8, California Code o f Regulations (CCR) may be required as a part of the work. All manholes, tanks, vaults , pipelines, excavations, or other enclosed or partially enclosed spaces shall be cons idered permit-required confined spaces until the pre-entry procedures demonstrate o therwise. The Contractor shall be responsible for implementing, administering, and ma intaining a confined space entry program (CSEP) in accordance with Sections 5156, 51 57, 5158, Title 8, CCR and shall implement such a program prior to performing any wo rk in a permit-required confined space. A copy of the permit shall be available at all times for review by the Contractor and City personnel at the work site.
Prior to starting work, the Contractor shall prepar e and submit its comprehensive CSEP to the Engineer. The CSEP shall address all potent ial physical and environmental hazards and contain procedures for safe entry into confined spaces, including, but not limited to the following:
1. Training of personnel
2. Purging and cleaning the space of materials and residue
3. Potential isolation and control of energy and ma terial inflow
4. Controlled access to the space
5. Atmospheric testing of the space
6. Ventilation of the space
7. Special hazards consideration
8. Personal protective equipment
9. Rescue plan provisions
The Contractor’s CSEP submittal shall also include the names of the Contractor’s and Subcontractor’s personnel assigned to the project w ho will have CSEP responsibilities, their CSEP training, their specific assignment and their responsibilities in carrying out the CSEP.
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Payment for implementing, administering, and provi ding all equipment and personnel associated with the CSEP shall be included in the b id items for which the CSEP is required and no additional compensation will be made.
(d) Hazardous Conditions: Contractor’s Responsibility f or Precautions - Contractor agrees that if, during the progress of the work, a hazardo us condition is identified which involves a risk of bodily harm to any person or a risk of da mage to any property, the Contractor will take such special precautions as shall be nece ssary to make the progress of the work safe under such condition. Conditions may result f rom, but are not limited to, the use of specified materials or equipment, the location of t he work, the condition of the site, the kind or method of construction, or the manner in wh ich any of the work is required to be done. The Contractor agrees to assume the sole res ponsibility for determining whether any such hazardous condition exists or will be created during the course of the work. (e) Use of Explosives – Explosives may be used only when authorized in wri ting by the Engineer, or as otherwise stated in the Specificati ons. Explosives shall be handled, used, and stored in accordance with all applicable regulations. No explosive material shall be transported to, stored or utilized on the site without written permission of Engineer. All blasting work and handling of explos ives on the site shall be done only by qualified persons who possess a valid permit. The Engineer’s approval of the use of explosives shall not relieve the Contractor from li ability for claims caused by blasting operations.
(f) Special Hazardous Substances and Process – Materials that contain hazardous substances or mixtures may be required on the work. A Material Safety Data Sheet as described in California Code of Regulations, Sectio n 5194 shall be requested by the Contractor from the manufacturer of any hazardous products used and submitted to the Engineer.
Hazardous material usage shall be accomplished with strict adherence to California Division of Industrial Safety requirements and all manufacturer warnings and application instructions listed on the Material Safety Data Sheet and on the product container label.
The Contractor shall notify the Engineer if a specified product cannot be used under safe conditions.
9.22 Patent Fees or Royalties - All fees, royalties or claims for any patented invention, article or method that may be used upon or in any manner co nnected with the work under this contract shall be included in the price bid for the work and the cont ractor and the Contractor’s sureties shall protect and hold the City, together with all the City's officer s, agents, servants and employees, harmless against any and all demands made for such fees or claims brough t or made by the holder of any invention or patent and, before the final payment is made on account of this contract, contractor shall, if requested by t he Engineer, furnish acceptable proof of a proper release from all such fees or claims.
Should the contractor, his agents, servants or empl oyees, or any of them, be enjoined from furnishing or using any invention, article, materia l or appliance supplied or required to be supplied or used under this contract, the contractor shall promptly substitute other articles, materials or appliances, in lieu thereof, of equal efficiency, quality, finish, suit ability and market value and satisfactory in all re spects to the Engineer. Or, in the event that the Engineers elects in lieu of such substitution to have supplie s and to retain and use any such invention, article, mate rial or appliance as may be required by the contrac t to be supplied – in that event, the contractor shall p ay such royalties and secure such valid licenses as may be requisite and necessary for the City, the City's officers, agents, servants and employees, or any o f them to use such invention, article, material or ap pliance without being disturbed or in any way inter fered with by any proceeding in law or equity on account thereof. Should the contractor neglect or refuse t o make the substitution promptly, or to pay such roya lties and secure such licenses as may be necessary, then, in that event, the Engineer shall have the ri ght to make such substitution or the City may pay s uch royalties and secure such licenses and charge the c ost thereof against any monies due the contractor from the City or recover the amount thereof from th e Contractor and any sureties notwithstanding fina l payment under this contract may have been made.
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9.23 Advertising - The names of the Contractor or S ubcontractors, with their addresses and the designation of their particular specialties, ma y be displayed at the job site on removable signs o nly if written approval is received from the Engineer. Com mercial advertising material shall not be attached to, or painted on the surfaces of, any buildings, fences, canopies, or barricades.
9.24 Antitrust Claims – Attention is directed to Pu blic Contract Code, Section 7103.5 which provides: “In entering into a public works contract or a subcontract to supply goods, services, or mat erials pursuant to a public works contract, the Contractor or Subcontractor offers and agrees to assign to th e City all rights, title, and interest in and to all causes of action it may have under Section 4 of the Clayton Act (15 U.S.C. Sec 15) or the Cartwright Act (Chapt er 2, commencing with Section 16700, of Part 2 of Division 7 of the Business and Professions Code), a rising from purchases of goods, services, or materi als pursuant to the public works contract or subcontrac t. The assignment shall be made and become effective at the time the City tenders final paymen t to the Contractor, without further acknowledgemen t by the parties.”
9.25 Audit and Examination of Records – The City an d entities and agencies designated by the City, shall have access to, and the right to au dit and examine at no additional cost, all of the Contractor’s project related data including but not limited to, books, estimates, records, contracts, bid cost data, Subcontractor and supplier job cost data, cha nge orders, correspondence, instructions, drawings, receipts, vouchers, purchase orders, notes, computa tions, daily logs, and memoranda relating to the work. Pursuant to Government Code, Section 8546.7, the Contractor shall preserve all such records and will be subject to examination and audit by the Sta te Auditor, at the request of the City, for a perio d of three (3) years after final payment under the Agreement.
9.26 Notice of Entrance - Before entering any private property the contractor shall give the owner, tenant and inspector a minimum of forty-eight (48) hours written notice.
9.27 Additional and Emergency Protection - Wherever, in the opinion of the Engineer, the contractor has not taken sufficient precautions for the safety of the public or the protection of the works to be constructed under this contract, or of adjacent structures or property which may be injured by processes of construction on account of such neglec t, and whenever, in the opinion of the Engineer, an emergency shall arise and immediate actions shall b e considered necessary in order to protect personal and property interest, whether public or private, t hen and in that event, the Engineer, with or withou t notice to the contractor, may provide suitable prot ection to the said interests by causing such work t o be done and such material to be furnished as shall pro vide such protection as the Engineer may consider necessary and adequate.
The cost and expense of such work and material so f urnished shall be borne by the contractor and if the same shall not be paid on presentation o f the bills therefore, then such costs shall be ded ucted from any amounts due or to become due the contracto r. The performance of such emergency work under the direction of the Engineer shall in no way relieve the contractor from any damages which may occur during or after precaution has been taken by the Engineer.
9.28 Placing Portions of Work in Service - Portions of the work may be placed in service as completed if desired by the City. Contractor shall give proper access to the work for this purpose. Such use and operation shall not constitute an acceptanc e of the work and the work, and the contractor shall be liable for defects due to faulty construction until the entire work under the contract is finally accepted.
9.29 Rights-of-Way - The City will provide all righ ts-of-way and easements in or beneath which pipes and other structures will be constructed by t he Contractor under this contract. If through the failure of the City to acquire or clear title to rights-of- way, the Contractor sustains loss which could not h ave been avoided by the judicious handling of forces and pla nt, there shall be paid to the contractor such amou nt as the Engineer may find to be a fair and reasonabl e compensation for such part of the Contractor's actual loss as the Engineer deems unavoidable. Act ual loss shall be understood to include no items other than necessary payments, idle time of men, id le time of equipment, cost of extra moving of equipment, and cost of longer hauls, with no allowa nce in any case for overhead or profit. If perform ance
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of the Contractor's work is delayed as a result of the failure of the City to acquire or clear title t o rights-of- way, a commensurate extension of time will be grant ed.
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SECTION 10 - MEASUREMENT AND PAYMENT
10.01 Measurement of Quantities for Unit Price Work - Materials and items of work which are to be paid for on the basis of measurement shall be me asured in accordance with the methods stipulated in the particular sections of the Contract Documents i nvolved . Unless specifically stated otherwise in this contract, no extra measurement(s) according to loca l custom of any kind shall be allowed in measuring the work under this contract; only the length, area , solid contents, number, weight, or time in standa rd units, as the case may be, shall be considered as specified.
Unless otherwise specified, quantities of work shal l be determined from measurements or dimensions in the horizontal planes. Stationing s hall be along the street centerline, lengths of san itary sewers, storm drains and water lines shall be measu red as the horizontal distances from center to cent er of structures, rounded to the nearest foot, and len gths of all return radii and curb data shall be mea sured along the face of curb. Volumetric quantities shal l be the product of the mean area of vertical or horizontal sections and the intervening horizontal or vertical dimensions. Measurements shall be in accordance with U.S. Standard Measures. A pound is an avoirdupois pound. A ton is two-thousand (2,000) pounds avoirdupois. The unit of liquid measure is the U.S. gallon.
When payment is to be made on the basis of weight, the weighing shall be done on certified platform scales or, when approved by the Engineer, on a completely automated weighing and recording system. The Contractor shall submit to the Enginee r with duplicate licensed Weighmaster’s certificate s showing the actual net weights. The City will accept the certificates as evidence of the weights delivered.
10.02 Bid Items - Should any bid item be eliminated in its entirety, payment will be made to the Contractor for actual costs incurred, in connection with such eliminated contract work, and for costs incurred prior to the date of the Engineer’s writte n notification eliminating such work. The actual c osts to be paid to the Contractor shall be computed in the same manner as if the work were to be paid on a for ce account basis. No compensation will be made to the Contractor, in any case, for loss of anticipated profits. Increased or decreased scope involving a change order will be paid as stipulated in the chan ge order.
The estimated value of work performed, for lump sum bids or lump sum bid items will be determined from the schedule of values, to be prepa red by the Contractor and presented at the preconstruction meeting. Elements of work on the s chedule of values shall be separated into groupings appropriate for the project. The Technical Specific ations may be used as a guide for establishing thes e groupings. Move-in costs, bond and insurance costs , and submittal preparation costs can be included i n the schedule of values under a separate mobilizatio n line item. This line item shall not exceed five- percent (5%) of the contract’s value. Overhead and profit shall not be allowed as a line item, but sha ll be prorated over other items of work.
10.03 Bid Quantities - The quantities listed in the Bid Schedule for each bid item do not govern final payment. Payments to the Contractor will be made only for the actual quantities of contract ite ms constructed in accordance with the plans and specif ications. If upon completion of the construction, the actual quantities show either an increase or decrea se from the quantities given in the bid schedule, t he contract unit prices will still prevail.
Payment will not be made for materials wasted or di sposed of in a manner not called for under the contract. This includes rejected material not unloaded from vehicles, material rejected after it has been placed and material placed outside of the plan lines. Unless otherwise provided, no payment will be made for materials delivered to the site but not in corporated in the work. Such quantities will not b e included in the final pay quantities. No compensat ion will be allowed for the disposal of rejected or excess material.
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When the estimated quantity for a specific portion of work is designated on the Bid Schedule as a “Final Pay Quantity”, the estimated quantity specif ied shall be the final quantity for which payment f or such specified portion of the work will be made, re gardless of the actual quantity constructed, unless the dimensions of said portions of the work shown on th e plans are revised by the Engineer. If such dimensions are revised and such revisions result in an increase or decrease in the quantity of such wo rk, the final quantity for payment will be revised by t he amount represented by the change. The estimated quantity for any portion of the work designated as a Final Pay Quantity shall be considered as approximate only and no guarantee is made that the quantity, which can be determined by computations, based upon the details and dimensions shown on the plans, will equal the estimated quantity. No allowance will be made in the event that the quanti ties based upon computations do not equal the estimated quantities. Final pay quantities will be designated on the Bid Schedule with the letter (F) and shall only apply to the corresponding portions of w ork specifically designated on the plans. Any port ion of work not designated as a final pay quantity will be measured and paid for as specified under other provisions of the Contract Documents.
10.04 Progress Payments – On or about the 25 th day of each month may be designated as the date which would terminate each working month for the purpose of making progress payments.
The Contractor's request for a progress payment sha ll be submitted under cover of the Request for Progress Payment form approved by the Engineer. The Request for Progress Payment form shall be complete and properly executed by the contractor, a nd have, as attachments, the items listed on the form.
The Contractor shall, on the date established, prep are and submit a progress estimate to the City for work accomplished during the previous working m onth, based on the various contract bid items and the unit bid prices. Invoices shall include amount s previously paid, itemized retention and any deduc tions or additions authorized by change order. Consultat ion with the Engineer may be necessary to determine the amount of work accomplished.
The first progress payment will not be made until t he following submittals have been provided and accepted: list and schedule of submittals, Baselin e Construction Schedule, schedule of values (if applicable), SWPPP. Subsequent progress payment re quests will not be accepted unless accompanied by the progress payment cover letter, an updated ba seline or revised schedule, a certification that th e record drawings have been updated as of the date of the invoice.
Upon receipt of a progress payment request, the Cit y shall, within ten (10) working days, determine if the request is proper, and if disputed the City will return the progress payment to the Contractor along with a written document setting fo rth the progress payment request’s shortcomings.
Following receipt of an undisputed and properly sub mitted progress payment request, the City shall authorize payment within thirty (30) calendar days.
Contractor may request partial payment for material s delivered to the site but not yet incorporated into the work (materials on hand). To receive cons ideration for payment of materials on hand, the Contractor shall provide the Engineer with a list o f such materials at least five (5) working days pri or to submitting the monthly estimate of amount earned fo r work completed. At the Engineer’s sole discretio n, up to seventy-five-percent (75%) of the estimated v alue of materials on hand may be considered for payment, subject to the following:
(a) Only materials which have received favorable review of shop drawings will qualify. (b) Eligible materials must be delivered and prope rly stored, protected, and maintained in a manner favorably reviewed by the Engineer, at the j ob site or at a bonded warehouse. (c) The Contractor's actual net cost for the mate rials must be supported by paid invoices to suppliers or other documentation requested by the Engineer.
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(d) Materials delivered to the site less than thi rty (30) days prior to their scheduled incorporation in the work shall not qualify.
(e) Partial payments for materials on hand shall not be deemed to be final payment for the material nor relieve the Contractor of any obligations under the Contract. (f) Partial payments for materials on hand shall be subject to retention.
From each progress estimate, five percent (5%) will be deducted and retained by the City, and the remainder of the amount due, less the amount of all previous payment will be paid to the Contracto r provided all work invoiced has been completed and approved by the Engineer.
The Engineer may withhold or nullify, the whole or any part of any payment to such extent as may be necessary to protect the City from loss on account of any of the following:
(a) Defective or vandalized work not remedied,
(b) Damage to the City or another Contractor,
(c) Claims filed, or reasonable evidence indicating probable filing of claims, (d) Stop notices, or failure of the Contractor to m ake payments properly to subcontractors or laborers or suppliers, in which case 125% of the st op notice amount shall be withheld until a release form is received,
(e) A reasonable doubt that the contract can be com pleted for the balance unpaid, (f) Reasonable evidence that the work will not be c ompleted within the contract time and that the unpaid balance of the contract sum would n ot be adequate to cover the City’s liquidated damages assessed in accordance with the Agreement for the anticipated delay,
(g) Failure of Contractor to maintain, update and s ubmit record documents, schedules or other submittals as required by the Contract Documents, (h) Performance of work by Contractor without prope rly processed shop drawings; (i) Any other failure of Contractor to perform its obligations under the Contract Documents.
The Contractor may elect to receive one hundred per cent (100%) of payments due under the contract from time to time, without retention of an y portion of the payment by the City, by depositing and maintaining securities of a value equivalent to the retention amount with the City in accordance with the provisions of Public Contract Code, Section 22300. Such securities, if deposited by the Contractor, s hall be valued by the City’s Administrative Services Dir ector, whose decision on valuation of the securitie s shall be final.
Contractor warrants that, upon submittal of an appl ication for payment, all work for which payment has been previously issued by the City and received by the Contractor, shall be free and clear of all claims, stop notices, security interests, and e ncumbrances in favor of Contractor, Subcontractors, or other persons or firms entitled to make claims by r eason of having provided labor, materials, or equipment relating to work.
The payment of progress payments by the City shall not be construed as an absolute acceptance of the work done up to the time of such payments and shall not constitute acceptance of defective work.
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10.05 Retentions - The City shall retain five perce nt (5%) of the amount of each progress estimate, and the accumulation of said amounts so r etained from the progressive payments to the extent unencumbered will be paid to the contractor in no l ess than thirty-five (35) days after the completion and acceptance by the Engineer and the City of the work done.
Upon contractor's request, City will make payment o f funds withheld from progress payments pursuant to the requirements of Code Section 14402 if contractor deposits in escrow with the City, or with a bank acceptable to the City, securities eligible for the investment of State funds under Government Code Section 16430 or bank or savings and loan cert ificates of deposit, upon the following conditions:
(a) Contractor shall bear the expense of the City a nd the escrow agent in connection with the escrow deposit made.
(b) Securities or certificates of deposit to be pla ced in escrow shall be of a value at least equivalent to the amounts of retention to be paid t o the contractor pursuant to this section.
(c) Contractor shall enter into an escrow agreement satisfactory to the City, which agreement shall include provisions governing inter alia:
1. Amount of securities to be deposited.
1. Providing of powers of attorney or other documen ts necessary for the transfer of the securities to be deposited.
2. Conversion to cash to provide funds to meet defa ults to termination of the contractor's control over the work, stop notices fi led pursuant to the law, assessment of liquidated damages or other amounts t o be kept or retained under the provisions of the contract.
3. Decrease in value of securities or deposit.
4. Termination of the escrow upon completion of the contract. (d) Contractor shall obtain the written consent of the surety to such agreement.
10.06 Final Payment - The City shall, prior to fina l acceptance, provide the Contractor with a copy of the final quantities for the various contra ct bid items and a summary of contract change order s for review. All prior payments shall be subject to cor rection in determining the total contract sum. The Contractor shall reply promptly in writing, to indi cate either concurrence or an explanation of possi ble discrepancies in the total contract sum.
The project will not be submitted to the City Counc il for acceptance until the Engineer and the Contractor concur with the totals of all quantities , costs, contract change orders and the total contr act sum. Following concurrence, a semi-final payment w ill be made to the Contractor after deducting all previous payments and all amounts to be retained un der the provisions of the contract. The retention payment shall be due and payable as a final payment after the expiration of thirty-five (35) days foll owing the date of final acceptance of the work by the City Council.
If within the time fixed by law, a properly execute d notice to stop payment is filed with the City, due to Contractor’s failure to pay for labor or mat erials used in the work, all money due for such lab or or materials will be withheld from payment to the Contractor in accordance with applicable laws.
If releases are required, the Contractor shall pay or cause to be paid to Subcontractors the amount stated in the conditional releases within fi ve (5) days after receipt of the semi-final payment , and shall promptly thereafter furnish evidence of such payment to the City.
The securities deposited by the Contractor will be released, providing that the following requirements of the contract have been fulfilled:
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(a) Satisfactory completion of all construction wo rk and written acceptance of said work by the City;
(b) The submission by the Contractor to the Engin eer of all required stop notice releases, submittals, written guarantees, warranties, operati ng manuals, and other project related documentation;
(c) The return to the Engineer of all drawings an d written specifications loaned to the Contractor during the construction period.
(d) The submission by the Contractor to the Engin eer of record documents and a set of red- lined drawings showing the revisions to the origina l set of drawings which reflect the actual construction of the project for preparation of “Record Drawings”.
The Contractor agrees that the payment of the final amount due under the contract shall release the City of San Carlos from any and all claims or l iability on account of all work performed under the contract, except those items previously made in wri ting and identified by the Contractor as unsettled.
Release of the final payment by the City shall not be construed as an acceptance of any defective work or acceptance of improper materials.
10.07 Acceptance - Contractor shall notify Engineer in writing of the completion of the work, whereupon the Engineer shall promptly satisfy them self by personal inspection as to the actual completion of the work in accordance with the terms of the contract. After receiving a written recommendation from the Engineer for acceptance of the work, City shall accept or reject the work; stating, if the work is rejected, the requisite con ditions for acceptance. When the City accepts the work, they shall file a Notice of Completion with the Cou nty Recorder in the county where the work is locate d and shall promptly notify the contractor in writing of the recordation. Contractor warrants and guara ntees that title to all work, materials and equipment acc epted by the City will pass to the City free and cl ear of all liens, claims, security interests or encumbrances, and that no work, materials or equipment accepted w ill have been acquired by the contractor, or by any oth er person performing the work at the site or furnis hing materials or equipment for the project, subject to an agreement under which an interest therein or encumbrances thereon is retained by the seller or otherwise imposed by contractor of such other person.
10.08 Compensation for Extra or Omitted Work – Comp ensation for extra or omitted work shall be in accordance with Section 5.08, Change Orders.
10.09 Compensation to City for Extension of Time - In case the work called for under this contract is not completed within the time limit sti pulated herein, the City shall have the right, as p rovided hereinabove, to extend the time of completion there of. If the time limit so be extended, the City sha ll have the right to charge to the contractor and to deduct from the final payment for the work the actual cos t to the City of engineering, inspection, administration , legal and other overhead expenses which are direc tly chargeable to the extension of time. The cost of f inal surveys and preparation of the final estimate shall not be included in such charges.
10.10 Claims - The term “Claim” shall mean a writte n demand or assertion by the Contractor seeking, as a matter of asserted right, adjustment in the terms of the Contract Documents, payment of money, extension of time, or other relief with resp ect to the Contract Documents, or determination of other disputes or matters in question between the C ity and Contractor arising out of or related to the Contract Documents or the performance of the work, including claims alleging an error or omission.
A claim must be stated with specificity, including identification of the event giving rise to claim, t he date of the event, and the asserted effect on contr act sum and contract time. The claim shall include adequate supporting data. Adequate supporting data for a claim for an adjustment of the contract time shall include scheduling data demonstrating the imp act of the event on the completion of the work.
Adequate supporting data for a claim for an adjustm ent of the contract sum shall include a detailed co st breakdown of the items allowed, isolating labor, ma terial, and equipment costs, and providing detailed quantities and unit prices for changed work. If th e exact amount of a claim is not ascertainable at t he time
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such claim is made, the supporting data currently a vailable shall be submitted. Supplemental data supporting the exact amount of the claim shall be submitted as soon as available.
Notwithstanding the making of any claim or the exis tence of any dispute regarding any claim, unless otherwise directed by the Engineer, the Cont ractor shall not cause any delay, cessation, or termination in the performance of the work, including portions of the work pertaining to a claim.
10.11 Time Limit on Claims - Contractor shall submi t any and all claims, together with adequate supporting data to the Engineer as soon as possible but not later than ten (10) working days after occurrence of the event giving rise to the claim, o r the date the Contractor first recognized, or reas onably should have recognized, the condition giving rise t o the claim, whichever is earlier. Contractor here by expressly waives all claims not made within this time limit.
Contractor is expressly barred from asserting any c laims of which the Contractor was aware, whether or not the exact amount of such claims was ascertainable, that is not submitted to the Enginee r prior to the Contractor proceeding with the work.
10.12 City Response to Claims - The Engineer shall promptly review claims. If additional supporting data is deemed necessary, the Engineer s hall request such additional data within ten (10) working days after receipt of the claim. The Contr actor shall furnish such additional data no later t han ten (10) working days after receipt of the City’s reque st. The Engineer shall render a decision promptly, but in any event, within thirty (30) working days after the receipt of the claim or the receipt of additio nal supporting data. If the amount of the claim is in excess of $50,000, the aforesaid thirty (30) workin g day period shall be sixty (60) working days. Failure o f the Engineer to render a decision within the afor esaid thirty (30) or sixty (60) working day period shall be deemed a decision denying the claim and the last day of such period shall be the date of such decision. The decision of the Engineer shall be final and bi nding unless appealed in accordance with the General Prov isions, Section 10.15, “Appeal of the Engineer’s Decision”.
10.13 Appeal of Engineer’s Decision - If Contractor disputes the Engineer’s decision of a claim, the Contractor shall, within thirty (30) calendar d ays of the decision, make a written appeal of the d ecision to the Engineer. The written appeal shall include all supporting data upon which the Contractor reque sts the City to modify its decision, including all docu mentation transmitted between the Contractor and th e Engineer on the underlying claim. The Engineer sha ll make a good faith effort to resolve the claim pr ior to final completion of the Project. In the event t he claim is not resolved prior to final completion, the Contractor’s claim shall be heard by the Director o f Public Works prior to recommending final acceptan ce to the City Council. The Contractor’s administrati ve remedies under the Contract Documents shall be exhausted after the decision of the Director of Pub lic Works is rendered. In case of disagreement wit h the decision of the Director of Public Works, the C ontractor may pursue the resolution of the dispute by presenting a formal claim to the City.
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SECTION 11 - GUARANTY
11.01 Contractor’s Guaranty - Prior to final accept ance, the Contractor shall warrant and guaranty to the City that all work is in accordance with the Contract Documents and is not defective.
The guaranty shall be accompanied by a warranty bon d for ten percent (10%) of the final contract sum, which shall warrant the quality of the work for a period of two (2) years after acceptance. The guaranty and warranty bond shall be in accordance with the Agreement Forms furnished in the Contract Documents.
11.02 Correction of Defective Work During the Guara nty Period - If within two (2) years after the date of City Council acceptance, or such longer period of time as may be prescribed by laws or regulations or by the terms of any applicable special guaranty required by the Contract Documents, any work is found to be defective, the Contractor shall promptly without cost to the City and in accordanc e with the City’s written instructions, either correct such defective work or if it has been rejected by the City, remove it from the site and replace it with non-defective work.
If the Contractor does not promptly comply with the terms of such instructions within ten (10) working days after written demand by the City, the City may have the defective work corrected. The Ci ty may also correct defective work immediately in cases of emergency where delay would cause serious risk of loss or damage. All direct, indirect and consequential costs of correcting defective work (including but not limited to fees and charges of engineers, architects, attorneys and other professionals) shall be absorbed by the Contractor.
The Contractor shall remove from the Project site portions of the work and materials which are not in accordance with the Contract Documents and w hich are neither corrected by the Contractor nor accepted by the City. If Contractor fails to pay the costs of such removal within ten (10) working days after written demand, the City may, without prejudice to other remedies, sell such materials at auction or at private sale, or otherwise dispose of such material. The Contractor shall be entitled to the proceeds of such sale, if any, in excess of the costs and damages for which the Contractor is liable to the City, including reasonable attorneys’ fees and expenses a nd compensation for the City’s services and expenses.
The City shall have the option, at its sole discretion and by notice to the Contractor, to accept defective work as defined in Section 4.18 – “Acceptance of Defective Work. “
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SPECIAL PROVISIONS
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TABLE OF CONTENTS
1. DESCRIPTION OF WORK.................................................................................................................... 4
2. LOCATION ............................................................................................................................................ 4
3. QUALIFICATION OF BIDDERS ............................................................................................................ 4
4. DAYS & HOURS OF OPERATION ....................................................................................................... 4
5. CONTROL OF WORK ........................................................................................................................... 5
6. LICENSES AND PERMITS ................................................................................................................... 5
7. SAFETY AND HEALTH REGULATIONS.............................................................................................. 6
8. SAFETY OF PERSONS AND PROPERTY .......................................................................................... 6
9. STAGING / CONSTRUCTION AREA ................................................................................................... 7
10. CONTRACTOR’S PLANT AND EQUIPMENT .................................................................................. 7
11. TRAFFIC CONTROL......................................................................................................................... 7
12. STORM WATER POLLUTION PREVENTION ............................................................................... 10
13. WATER ........................................................................................................................................... 11
14. POWER ........................................................................................................................................... 11
15. DUST CONTROL ............................................................................................................................ 11
16. CLEANUP ....................................................................................................................................... 11
17. CLEARING AND GRUBBING ......................................................................................................... 12
18. PROTECTION AND RESTORATION OF EXISTING IMPROVEMENTS ....................................... 12
19. EXISTING UTILITIES ...................................................................................................................... 13
20. UTILITY COORDINATION .............................................................................................................. 14
21. OBSTRUCTIONS ............................................................................................................................ 14
22. MAINTENANCE OF SEWER SERVICE ......................................................................................... 15
23. RESEALING OF MANHOLES ........................................................................................................ 15
24. PROTECTION OF PUBLIC SAFETY.............................................................................................. 15
25. SURCHARGING OF MANHOLES .................................................................................................. 15
26. CONTRACTOR-RELATED BLOCKAGE ........................................................................................ 15
27. NOTIFICATION OF RESIDENTS AND MERCHANTS ................................................................... 16
28. OWNER / CONTRACTOR MEETINGS .......................................................................................... 16
29. RECORD DRAWINGS / CORRECTED SEWER MAPS ................................................................ 17
30. CONSTRUCTION SCHEDULE ....................................................................................................... 17
31. DAILY WORK REPORTS ............................................................................................................... 17
32. SUBMITTALS .................................................................................................................................. 17
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SPECIAL PROVISIONS
These Special Provisions contain project specific r equirements pertaining to the work, and as such, shall take precedence over the General Condit ions portions of these Specifications. All costs associated with satisfying the requirements i n these Special Provisions shall be included in the Contractor’s bid price and no additional compensation shall be made.
All work shall be done in accordance with the City Standard Specifications, City Standard Details, Caltrans Standard Specifications (where referenced), and the Contract Documents. The 2015 version of the Caltrans Standard Specifications (State Specifications) shall be used.
1. DESCRIPTION OF WORK
The work to be done under this contract includes but is not limited to:
• Replacement of existing sanitary sewer laterals at various locations in the City of San Carlos, using pipe bursting and open cut construction methods. • Surface restoration.
• Coordination with residents.
• Temporary traffic control.
The Contractor shall furnish all materials, labor, tools, equipment, supervision, transportation, handling, storage, traffic control, permits, licenses, and all other incidentals necessary to complete the work successfully.
Although this contract already has a candidate list of sewer laterals for replacement, as shown on Appendix C, “Lateral Replacement List” , similar work may be added to the contract.
The work may also include: clearing, grubbing, removal of obstructions, removal and restoration of existing curb, gutter, sidewalk, roadway pavement, inlets, signs, trees removal and trimming, diversion of sewage flow, protection of existing utilities and appurtenances and such other items required by the Project Plans and Specifications.
2. LOCATION
Work under this contract will be performed at various locations throughout the City of San Carlos, as identified in Appendix C Lateral Replacement List.
3. QUALIFICATION OF BIDDERS
The Contractor must have successfully pipe burst three hundred (300) sanitary sewer laterals and have three (3) years of experience involving pipe bursting.
4. DAYS & HOURS OF OPERATION
The Contractor shall restrict construction activities to the following hours:
Schedule of Working Hours within Public Right of Way
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Construction
Location Working Days Working Hours
Residential & Local Monday through Friday 8:00 a.m. to 5:00 p.m.
Arterial & Collector Monday through Friday 9:00 a.m . to 3:00 p.m.
No work shall be performed on Saturdays, Sundays, or designated legal holidays unless otherwise designated below.
Exceptions may be made, at the Engineer’s discretio n, to allow work at other times and on other days if required for the Contractor’s oper ations. In such cases, the Contractor shall have an alternate work schedule reviewed and authorized by the Engineer prior to commencement of work.
Activities outside of those hours shall not generat e objectionable noise, dust, or inconvenience to the public. Regular working days a re from Monday through Friday except City legal holidays unless exception is granted by the City Engineer.
Contractor to coordinate with nearby schools (Britt an Acres Elementary, Central Middle School, Charter Learning Center, Heather Elementary , Mariposa Upper Elementary, Tierra Linda Middle School, White Oaks Elementary, Clifford Elementary School, Carlmont High School, San Carlos School District)
that may be affected by improvements and plan work ing hours to accommodate school’s schedule when in session. Contractor shall note that these areas may experience higher volumes of traffic during student drop-off and pick-up, and shall adjust working hours to minimize any delays or disruption to traffic.
The project has a few interfacing streets. Contractor shall schedule operations so that minimal disturbance to businesses and residents will be occurred. In the public’s best interest, pavement rehab activities shall be scheduled in such a way as to avoid having multiple streets in the same neighborhood closed on the same day.
5. CONTROL OF WORK
The Contractor shall as the first order of work coordinate with all residents and businesses two (2) weeks and seventy-two (72) hours in advance of any work.
The Contractor shall use only chalk-based marking paint for all construction information painted on the street, sidewalks, or any other visible surface.
6. LICENSES AND PERMITS
The Contractor and all subcontractors shall obtain a business license from the City of San Carlos and shall hold current licenses for the craft that the business is contracting for as required by Federal, State and Local laws.
The Contractor shall apply for any required permits, including encroachment and tree removal permits from the applicable agencies (with copies of the form and application submitted to the Engineer) within thirty (30) calendar days after the issuance of the Award of Contract Notification Letter and prior to beginning work in the affected areas.
The Contractor shall submit copies of the permits, once issued, to the Engineer. No
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additional time schedule will be granted to the Contractor for any delays resulting from the processing of these permits.
A City of San Carlos “Encroachment Permit” is required. As a Contractor working for the City, no fee will be assessed to obtain an Encroachment Permit for this project.
If the construction work will require any street trees to be trimmed, Contractor shall obtain a “Street Tree Permit” from the City of San Carlos Department of Planning.
Applications for Street Tree Permits are available by calling the Department of Planning at (650) 802-4263. It is the Contractor’s responsibility to obtain fee information updates by calling the City Department of Planning.
A City of San Carlos “Hazardous Materials Storage System Permit” may be required for various construction activities. The Contractor is responsible for verifying to the requirements and fee schedule for storage of diesel fuel and/or hazardous materials by contacting the San Carlos Fire Department at (650) 802-4300 . It is the Contractor’s responsibility to follow any additional requirements as required by the 2016 California Fire Code.
7. SAFETY AND HEALTH REGULATIONS
The Contractor shall comply with all applicable occupational safety and health standards, rules, regulations and orders established by Federal and State Agencies.
Specific attention is directed also to OSHA safety rules, regulations and precautions to be taken by the Contractor before entering sanitary se wer manholes, and other sanitation structures with respect to physical and chemical hazards that may be present.
The area of work shall at all times be protected by means of an adequate number of cones, barricades, flags or whatever means is neces sary to properly and safely protect both vehicular and pedestrian traffic.
Any condition deemed to be an unsafe condition shal l be immediately corrected by the Contractor. The failure of the City or its represen tatives to bring a potentially dangerous situation to the Contractor's attention shall not relieve the Contractor from the responsibility for providing a safe work area.
The sanitary sewers in this contract convey sanitary sewage and certain substances that may be hazardous. These substances may include: hyd rogen sulfide; a natural gaseous byproduct of sanitary sewage; sodium hydroxide (cau stic soda); and ferrous and ferric chloride (iron chlorides), which may be used to con trol odors in sewers. The Contractor shall exercise extreme caution and comply with all OSHA and CAL/OSHA requirements when working in the sewers or in the vicinity of hazardous substances.
All manhole entry shall be in compliance with the c onfined space entry requirements of CAL/OSHA, Santa Mateo County, and City of San Carlo s. Contractor shall coordinate emergency retrieval procedures with local emergency service providers.
The Contractor shall be responsible for initiating, maintaining and supervising all safety precautions and safety programs in connection with the work and ensures compliance to
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all applicable safety and health regulations of federal, state, and local agencies.
8. SAFETY OF PERSONS AND PROPERTY
The Contractor shall take all reasonable precautions for the safety of, and shall provide all reasonable protection to prevent damages, injury or loss to:
1. All employees, City personnel, residents on the project, and all others who may be affected thereby;
2. All the work and all materials and equipment to be incorporated therein, whether in storage on or off the site, under the ca re, custody or control of the Contractor or any of the Contractor’s subcontractors; and
3. The work of the City or other contractors.
The Contractor shall give all notices and comply with all applicable laws, ordinances, rules, regulations and lawful orders of any public authority bearing on the safety of persons or property or protection from damage, injury or loss.
The Contractor shall erect and maintain, as require d by existing conditions and the progress of the work, all reasonable safeguards for safety and protection, including posting danger signs and other warnings against hazards, pr omulgating safety regulations, and notifying owners and users of adjacent utilities.
The Contractor shall designate a Site Safety and He alth Officer who is a responsible member of the Contractor’s organization and whose d uty shall be the prevention of accidents. The Contractor shall submit the name of the Site Safety and Health Officer to the Engineer in writing. The Site Safety and Health Officer shall be responsible for preparation of a Health and Safety Plan.
The Health and Safety Plan shall detail the Contrac tors safety committee(s), safety rules, safety training, enforcement procedures, incentives , accident procedures and investigations, inspections, safety equipment and m aintenance, hazardous materials (i.e. asbestos pipe) handling procedures, emergency action plan(s), alcohol and drug policies, confined space entry procedures, certification prog ram and emergency retrieval procedures, 911 and emergency rescue services withi n jurisdiction of the work area, health providers and hospital emergency near the work site.
9. STAGING / CONSTRUCTION AREA
The City has not designated a staging area for this project. Should a staging area be desired, the Contractor shall be responsible for securing such an area along with any and all permits and permissions that may be necessary from the City and/or private property owners. Proof of concurrence shall be provided to the City upon request. Any fencing or other protective means (if required or employed by the Contractor) shall be at the contractor’s expense.
10. CONTRACTOR’S PLANT AND EQUIPMENT
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The Contractor shall at all times be responsible for the security of all plant and equipment it owns or controls. The City will not take any responsibility for missing or damaged equipment, tools or personal belongings.
11. TRAFFIC CONTROL
Construction shall be organized so as to cause the least possible inconvenience to traffic.
Traffic control shall comply with the latest Caltrans Standard Plans and traffic control devices shall be furnished, placed, and maintained in accordance with the latest version of Part 6, Temporary Traffic Control, of the California Manual on Uniform Traffic Control Devices (CA- MUTCD).
The Contractor shall provide all required signs, barricades, lights, high-level flag trees, arrow boards, and other devices.
No work shall be performed on Saturdays, Sundays, or designated legal holidays. Exceptions may be made, at the Engineer’s discretion, to allow work at other times and on other days if required for the Contractor’s operations. In such cases, the Contractor shall have an alternate work schedule reviewed and authorized by the Engineer prior to commencement of work.
General Requirements:
1. The Contractor’s attention is directed to Sectio n 9.20 of the General Provisions for additional requirements.
2. The Contractor shall submit a traffic control pl an to the Engineer for review, including any requests for alternate work schedules or work hours:
3. No work may begin under contract until the Traff ic Control Plan has been approved by the Engineer. Time required for review and approval of the Traffic Control Plan shall not constitute a basis for time extension.
4. The Contractor shall maintain temporary AC surfa ce to provide safe and comfortable passage for pedestrian and vehicular traffic.
5. At the end of each day, all trench or access pit excavations shall be either backfilled in accordance with Section 1301-4, “Bedding and Backfill,” of these Technical Specifications, or covered with traffic rated non-skid steel plates. The steel plates shall be countersunk flush with the adjacent grade to provide a smooth surface if the plates are located within the traveled way of the road.
Cutbacks shall be applied in gaps and/or at edges. Adjoining plates shall be tack-welded where the plates meet. Plates located outside of the traveled way shall be held in place by placing temporary asphalt around all edges.
6. The Contractor shall provide electric arrow boar d(s) for any lane closures and reductions, except for on residential streets.
Special Requirements:
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1. The Contractor shall be responsible for providin g and maintaining all temporary traffic control and safety devices, including all personnel necessary for effectively directing vehicular, pedestrian and bicycle traffic through the construction zone. The Contractor assumes sole and complete responsibility for the job and site conditions, including safety of all persons and property, from start until final acceptance of the project. This requirement shall apply continuously twenty-four (24) hours per day and shall not be limited to normal working hours.
2. Streets shall not be closed unless authorized by the Engineer in writing at least seventy-two (72) hours prior to the requested date. If street closure is approved, Contractor shall notify the following forty-eight (48) hours prior to the street closure:
a. City’s project manager and inspector
b. City of San Carlos Police Department, (650) 802- 4277 c. City of San Carlos Fire Department, (650) 780-74 00
d. City of San Carlos Garbage, Recycling, and Tree Trimming Haulers e. Recology San Mateo County (650) 595-3900
f. SamTrans
g. Impacted Elementary, Middle, and High Schools
h. Impacted residents and businesses
3. If emergency or urgent street closures are requi red, the Contractor shall notify:
a. City’s project manager and inspector
b. City of San Carlos Police Department, (650) 802- 4277 c. City of San Carlos Fire Department, (650) 780-74 00
4. If construction will obstruct a bus stop, the Co ntractor shall notify the SamTrans Operations Control Center seventy-two (72) hours in advance at (650) 508-6200.
5. Access for local residents and businesses and al l private property shall be maintained at all times. Signs shall be placed in front of commercial and industrial driveways to allow continual access. At the end of each working day these streets shall be reopened to through traffic with proper barricades, warning devices and temporary striping. If these streets are closed, the Contractor shall proceed expeditiously and with consideration for public convenience from the start of work to its completion.
12. STORM WATER POLLUTION PREVENTION
Consistent with the requirements of the federal Clean Water Act, the Project is subject to water pollution prevention requirements, which include the implementation of a water pollution prevention plan and/or implementation of local storm water requirements, and prohibit the discharge of pollutants from the Project site. The Contractor shall use appropriate Best Management Practices (BMPs) and source control techniques on the site at all times in order to prevent non-stormwater discharges from construction.
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All work shall conform to the National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities (Order No. 2009-0009-DWQ, NPDES No. CAS000002) ("General Permit"), and the NPDES Municipal Regional Stormwater Permit (MRP) (Order No. R2- 2015-0049, NPDES No. CAS612008). The Contractor shall implement all applicable San Mateo Countywide Water Pollution Prevention Program (SMCWPPP) measures and BMPs. Failure to comply with the approved construction BMPs will result in the issuance of correction notices, citations and/or a stop work order.
Prior to the start of any field work, the Contractor shall prepare a letter or plan which summarizes which BMPs and source control measures will be implemented on site to prevent non-stormwater discharges, and includes copies of any applicable California Department of Transportation Construction Site BMP Fact Sheets, or an approved equivalent.
The Contractor is responsible for furnishing, installing, constructing, inspecting, maintaining, removing, and disposing of the BMPs as necessary throughout the entirety of the project. The Contractor shall inspect BMPs regularly, and correct improperly installed, damaged, or ineffective BMPs immediately.
13. WATER
Water for use during construction shall be furnished by the Contractor and all costs incurred including the water use, meter charges, meter/backflow preventer deposit, vehicles and containers needed in transporting water to the job site shall be paid by the Contractor. The Contractor’s attention is directed to Section 9.11 of the General Provisions for additional information.
14. POWER
All power for and in connection with work to be done under this contract shall be furnished and maintained by Contractor. The Contractor’s attention is directed to Section
9.12(h) of the General Provisions for additional information.
15. DUST CONTROL
The Contractor shall furnish all labor, equipment and means required and shall carry out effective measures wherever and as often as necessary to prevent its operation from producing dust in amounts damaging to property or causing nuisance as defined by the Engineer.
The Contractor shall be responsible for any damage resulting from any dust originating from its operations.
The dust abatement measures shall be continued until the Contractor is relieved of further responsibility by the Engineer.
The use of water shall not be permitted as a substitute for sweeping or other methods of dust control. Only dry sweeping is allowed.
Contractor shall sweep daily. The work area shall be left in a neat and presentable
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condition at the end of each workday.
16. CLEANUP
Through all phases of construction, including suspe nsion of work and until final acceptance of the project, the Contractor shall kee p the worksite and other areas used by it in a neat and clean condition, and free from any accumulation of rubbish and debris.
Contractor shall properly dispose of all excess earth, concrete, AC and debris off job site and clean up the work area at the end of each workd ay. The work area shall be left in a neat and presentable condition.
The Contractor shall keep its haul roads free from dirt, rubbish, and unnecessary obstructions resulting from its operations. Care shall be taken to prevent spillage on haul routes. Contractor shall obtain all required truck route permits. Any such spillage shall be removed immediately and the area cleaned by the Contractor.
Disposal of all rubbish and surplus materials shall be off the site of construction, at the Contractor’s expense, all in accordance with local codes and ordinances governing locations and methods of disposal, and in conformance with all applicable safety laws, and the requirements of the OSHA Safety and Health Standards for Construction.
The Contractor is advised that the disposal of solid waste, sewage, industrial waste, or other polluted waters into the public storm drain system is prohibited. Any fines or penalties levied against the City or Contractor for illicit discharges to the storm drain system as a result of the Contractor’s operation are the sole responsibility of the Contractor.
If the Contractor exceeds the number of days assigned to this contract, the Contractor shall continue to clean the area. When street cleaning is not performed to the satisfaction of the Engineer, the Engineer may have the area cleaned by City crews, and any incurred costs shall be deducted from the Contractor’s progress payments.
17. CLEARING AND GRUBBING
The work shall include, but is not limited to, removal of the following: PCC/AC pavement, manholes, existing sewer mains, and all other existing obstructions so designated on the plans, or as required by the Engineer or the Standard Specifications.
The Contractor shall remove PCC/AC pavement to the limits as shown on the plans, or as directed by the Engineer, by sawcutting. Any and all pavement damaged by the Contractor shall also be saw-cut and removed as directed by the Engineer. Slurry from sawcutting shall be cleaned up by wet/dry shop vacuum.
All cleared and grubbed materials shall be hauled off and disposed outside of the right- of-way at a suitable location and in a lawful manner by the Contractor.
Unless shown on the plans, no trees shall be removed. Trees, limbs, and roots within the project area which interfere with the Contractor's operations may be trimmed, with authorization from the Engineer. Tree trimming shall only be performed by a qualified
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arborist or tree surgeon. Prior to any trimming being performed, the Contractor shall submit to the Engineer, for review, the qualifications of the proposed arborist or tree surgeon. Any tree roots one inch or greater in diameter which have to be removed or are damaged during construction operations shall be sawcut evenly and shall be treated with a heavy coat of commercially available water base asphalt emulsion sealing compound.
If roots are to be left exposed for an extended period of time, all roots shall be covered immediately with two (2) layers of burlap or equivalent material and soaked regularly with water to ensure that all roots are kept moist for the duration of exposure. No tree shall be trimmed or removed without a permit from the Planning Department.
18. PROTECTION AND RESTORATION OF EXISTING IMPROVEMENTS
The Contractor shall submit video DVDs of the job site to the Engineer, for review, prior to the start of construction, for the purpose of providing a record of existing conditions.
Only DVD format and new DVDs shall be used. Each DVD shall be labeled and dated appropriately. The DVD shall provide a view encompassing the entire project area, for all construction activities including at a minimum, the proposed excavation areas and contractor’s staging area, with sufficient clarity and scope to the satisfaction of the Engineer. The Contractor shall submit these DVD with a written log noting any existing defects or irregularities in the existing pavement. The log shall also state the location
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(by station), date, and time the DVDs were made. Upon receipt by the Engineer, the DVDs shall become the property of the City.
If the Contractor plans to drive sheeting, the Contractor shall video inspect nearby structures prior to driving the sheeting. This video inspection shall be included in the site DVDs above, and shall be accompanied by a similar log which notes street address and existing defects or irregularities.
The Contractor shall be responsible for the protection of public and private property adjacent to the Work and shall exercise due caution to avoid damage to such property.
The Contractor shall repair or replace all existing improvements which are not designated for removal (e.g., street sections, curbs, gutters, driveways, fences, walls, structures, landscaping, etc.) which are damaged or removed as a result of its operations. Repairs and replacements shall be at least equal to existing improvements, and shall match them in finish and dimensions.
Any damages to the private properties will be restored to the satisfaction of the property owners/Engineer within seven (7) days of the damage(s).
Damages within the public right of way will be restored to the satisfaction of the Engineer after work on that particular block is completed.
19. EXISTING UTILITIES
The Contractor shall notify Underground Service Alert (U.S.A) at 1-800-642-2444 for field location of all utilities 48 hours prior to any excavation. In addition, the Contractor shall contact the Railroad Call Before You Dig (CBUD) at 1-800-336-9193 for field location of utilities when work is within the railroad tracks a minimum of forty-eight (48) hours prior to any work.
The Contractor shall be responsible for verifying the presence of utilities within the limits of work, as well as any changes in the limits that are made to accommodate the project, protecting all utilities including but not limited to traffic signal conductors, signal interconnect communication, and fiber optic cables that may be affected by construction activities (e.g., clearing and grubbing, excavation, trenching, etc.), and notifying the Engineer in writing of any conflicts prior to beginning any excavation.
The Contractor shall pothole to verify the location and/or elevation of existing utilities as marked by Underground Service Alert (U.S.A.) within the limits of work. The Contractor shall work with utility companies and inspectors to protect existing utility lines. The Contractor shall notify the Engineer three (3) working days in advance of the potholing operation. Once the utilities are exposed, the excavation shall not be backfilled until the Engineer has inspected and taken measurements of the utilities.
Unless otherwise indicated on the plans, a pothole shall have a maximum length of six (6) feet, maximum depth as indicated on the plans or as directed by the Engineer, and the width dimension shall be as required by the Contractor with authorization of the Engineer.
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The Contractor will protect and assume liability for all existing or newly installed structures and lines from damage by Contractor’s forces during the construction period from the date of Notice to Proceed and the date of Final Acceptance.
All repairs of apparent or discovered utility facilities will be accomplished by the respective utility owners. The Contractor must coordinate with the utility companies to rewrap and/or repair their utility. All exposed existing telephone, gas, water, electrical and other public utility facilities will receive an envelope of twelve-inches (12”) of sand.
All painted markings including USA and CBUD markings, marks placed by the Contractor, and marks placed by the City’s survey crew on street pavement, curbs, gutters and sidewalks shall be completely removed by the Contractor prior to completion of the project. All cost incurred to complete this work shall be deemed included in other items of work and no additional payment will be made thereof.
20. UTILITY COORDINATION
All relocations of apparent or discovered utility lines (e.g., AT&T, PG&E, SJWC, etc.) shall be accomplished by the forces of the appropriate utilities. The Contractor shall notify the appropriate utility at least forty-eight (48) hours in advance of working in the vicinity of any utilities in the project area.
Existing utilities shown on the plans are for information only and the locations are approximate. The Contractor shall assume full responsibility for the location of all existing utilities, whether or not shown on the plans, prior to the commencement of any construction activity (e.g., excavation, clearing & grubbing, etc.) which may damage any existing utilities. Furthermore, the Contractor shall protect and assume liability for all existing utilities, whether or not shown on the plans, and any newly installed structures and lines from damage by contractor’s forces for the duration of the construction period (from the date of Notice to Proceed until the date of Final Acceptance).
The Contractor must allow utility companies to rewrap their utilities. All exposed existing or new telephone, gas, water electricity or other public utility facilities shall receive an envelope in all directions of twelve-inches (12”) of sand surrounding said utility(s) within the backfill area. This envelope shall be placed by the Contractor. All utilities must be supported by the Contractor when trench is opened.
21. OBSTRUCTIONS
The City shall not be responsible for any impact to the Contractor of any restrictions that may be caused by the work of other agencies, or the requirements thereof.
In the event that gas, electricity, telephone, water or other utility facilities are encountered, the Contractor shall immediately notify the Engineer and make the necessary coordination to have these structures (vaults, manholes, risers, valves, etc.) removed, relocated, and/or adjusted as necessary by the respective utility company unless specified in these Technical Specifications.
The storm and sanitary manholes, water valves, and monument covers shall be adjusted to grade by the Contractor as specified in these Technical Specifications. The
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Contractor shall also notify and coordinate with utilities to raise and/or adjust vaults, cabinets, etc. to grade.
The Contractor is required to cooperate with forces engaged in utility work and shall schedule and conduct the work under the Contract in such a manner as to avoid any unnecessary delay or hindrance to the work of the utility companies.
If the Contractor causes damage to Traffic Signal Communication Cable(s), the Contractor shall replace at no cost to the City the complete run of Traffic Signal Communication Cable(s) to the next controller. No splicing of Traffic Signal Communication Cable(s) shall be allowed at pull box. No time extension shall be granted to re-pull/replace Traffic Signal Communication Cable(s).
22. MAINTENANCE OF SEWER SERVICE
Cleaning and CCTV inspection operations shall not r esult in the interruption of sewage service to any customer in the City. Sewage must be controlled within the pipeline at all times.
23. RESEALING OF MANHOLES
The Contractor shall reseal all manholes encountere d that were sealed for the control of odors or entry of extraneous water.
24. PROTECTION OF PUBLIC SAFETY
If the Contractor encounters a condition where public safety is threatened (such as, but not limited to, a pipe hole, pipe collapse, stoppage, blockage and/or eminent sewer spill) the City’s representative shall be notified immediatel y. Furthermore, the Contractor shall provide a visual record of the section of line containing the condition within eight (8) hours to City. If the CCTV camera becomes lodged inside t he sewer and cannot be retrieved, the Contractor shall inform the City immediately. I t is the Contractor's responsibility to remove the camera and ensure that the sewer is not damaged and Sanitary Sewer Overflows (SSOs) do not occur.
25. SURCHARGING OF MANHOLES
If the Contractor encounters a surcharging manhole (flow exceeds the diameter of the sewer pipe) and any blockages, then the Contractor shall immediately notify the City’s representative, including any information on the cause of the blockage.
26. CONTRACTOR-RELATED BLOCKAGE
In the event of any Contractor-related overflow or interruption/backup of customer service, the Contractor shall immediately notify the City and shall contain and eliminate the overflow. The City’s sewer maintenance department can be contacted during normal business hours at 650-802-4140 , and at 650-802-4321 after hours and weekends only.
The Contractor shall be responsible for any fines levied by others, reimbursement of any agency incurred costs, damage, cleanup, restoration of flow, and any disruption of
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service costs to customers as a result of the Contr actor’s work. This is in addition to any and all costs incurred by the customer. The City re serves the right to deduct any costs resulting from the above by reducing the amounts fr om the next invoice owed to the Contractor or by direct billing to the contractor which shall be paid no later than thirty (30) days following invoice date.
27. NOTIFICATION OF RESIDENTS AND MERCHANTS
The Contractor shall perform the following tasks prior to commencement of the work:
A. Pre-Construction Planning: Prepare a draft notification letter stating the nature of work, expected duration of construction activity affecting their property, information regarding street closures and/or detouring, along with a distribution map showing all recipients of the notification letter. Include Contractor's telephone number for the purpose of taking inquiries and complaints. Obtain from the City a ma iling list of property owners and/or occupants within 300 feet of each project site. Submit a draft copy of the notification letter and distribution map to City at Pre-Construction conference. The final format and wording of this letter shall be subject to approval of City.
B. Two-Week Advance Notification:
• The City will have one week from the submittal da te to review and make suggested changes. Once City approval of letter and distribution map are received, distribute notifications via U.S. mail to all properties in the mailing list within 300 feet of each project site at least two w eeks, but no more than three weeks, from the scheduled work at the respective site. Confirm that distribution is complete and accurate.
• For each project site within 1000 feet of a schoo l, Contractor shall coordinate with City staff and school principals to notify the parents of any changes in traffic patterns, detours, or parking restrictions. The notification shall include a copy of the approved Traffic Control Plan or detours around the school area.
C. 72-Hour Advance Notification: Prepare a second draft notification letter and submit to City for review. The City will have one week from the submittal date to review and make suggested changes. Once approval of the second noti fication letter is received, the Contractor shall provide a copy of the final letter to the City and use the City-approved mailing list and map from Section B above to hand-d eliver the notice to all required recipients at least 72 hours, but no more than 96 h ours, ahead of construction at each project site. If work is rescheduled or delayed, repeat this notification process.
D. No Parking Signs:
• If necessary, “No Parking – Tow Away” signs shall be posted on the front and back of Type II barricades, spaced no greater than 100-feet apart, a minimum of 48 hours in advance of all work requiring parkin g restrictions. Only the date in which the parking restriction is needed shall be printed (in 2-inch letters) on the sign. All signs must be removed immediately aft er the work requiring the parking restriction has been completed.
• The first barricade of each block, on both sides of the street, in both directions of travel (4 totals) shall contain, in addition to the “No Parking – Tow Away” sign, the 72-Hour Advance Notification flyer to pro vide property owners with a general description of the work to be done. The Con tractor shall notify the
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inspector 48 hours in advance of the operation. Cit y inspector will verify the posting and notify the police department.
• City will provide “No Parking” signs for the Cont ractor’s use on this project, if needed. Contractor Shall arrange for the pickup of signs not less than seven days prior to being needed.
E. Public Outreach:
• The Contractor shall apply a proactive public out reach approach to construction operations throughout the duration of the project, including noticing the public prior to the beginning of const ruction activities. Outreach shall be coordinated with the project schedule and project components such as: traffic and pedestrian controls; noticing for r esidents; businesses; schools; etc. Ensure that the building/property manager or o wner receives notifications for managed properties (i.e., apartments, businesse s). Public outreach activities need to match updates to the project sch edule, and also be timed appropriately for work items.
• Multiple public notifications shall be provided f or various work items as described elsewhere in the specifications.
• Public outreach shall include daily and weekly ac tivities to notify the public of construction impacts and progress. The Contractor s hall designate a construction crew member for public outreach (outre ach lead), who will be responsible for handling public outreach tasks and coordination, including coordination with the City. The outreach lead shall attend construction progress meetings.
• Contractor shall utilize the project's web-based document management system for the transmittal of outreach materials for City and public. • Providing public outreach for the duration of the project, including, but not limited to, pre-construction notices, construction area signage, weekly electronic-based communication, community outreach, etc. Outreach to be coordinated with the various submittals required by the Contract for coordination, traffic and pedestrian control, and g eneral site controls for the project.
F. Construction-Phase Responsibilities:
• Provide timely updates to City Project Constructi on Manager regarding schedule changes, delays, new impacts, and addition al work affecting access or traffic.
• Installed required on-site signage for traffic co ntrol, detours, and access changes.
• Maintain signage throughout project duration.
G. Ongoing Communication Compliance:
• Use only City-approved communication content
• Follow all notification timelines
• Coordinate with City before issuing any new or re vised public information
If Contractor encounters any difficulty in obtainin g resident’s or business manager’s permission to access the easement in order to perform the inspection, then Contractor shall contact the City for assistance. In such cases, Contractor shall provide a minimum of two weeks’ notice to the City prior to the need to acce ss private property. Contractor is
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responsible for scheduling work such that this two- week notification period does not interfere with the overall work schedule.
28. OWNER / CONTRACTOR MEETINGS
A. PRE-CONSTRUCTION CONFERENCE: A Pre-Construction Conference will be held at the San Carlos City Hall, 600 Elm Street, San Carlos, CA 94070. Notice to Proceed shall be issued at the conclusion of the pre-construction conference.
The conference will address the scope of work and t he Contractor's proposed construction schedule, traffic control and detour p lan. At the Pre-construction conference the Contractor shall provide the followi ng, in addition to the items specified in Section 8.09 of the General Provisions:
• The proposed construction schedule (for overall project); • Two-week look-ahead construction schedule;
• Traffic Control Plan;
• Draft Notification Letter to Residents and Merchants; • Critical Project Submittals and/or Submittal Log Showing Anticipated Submittal Schedule
B. WEEKLY CONSTRUCTION MEETINGS: A weekly construction will be held at the construction site or at San Carlos City Hall, 600 Elm Street, San Carlos, CA
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94070 as determined by the City Project Manager/Inspector. The weekly meetings will be held on a day and time mutually satisfactor y to the City and Contractor’s representative and/or superintendent.
At the weekly progress meetings, the Contractor sha ll provide a two-week look- ahead schedule.
Every other week, in advance of the progress meetin g, Contractor shall submit a progress report listing the work completed during t he previous two-week period, including any specific issues such as delays, defec ts, inability to locate or access manholes, sewer map corrections, etc.; and, if nece ssary, an updated project schedule that reflects current progress and any sch edule impacts arising from inclement weather, equipment or staffing problems, etc.
29. RECORD DRAWINGS / CORRECTED SEWER MAPS
Upon completion of the project, the Contractor shall provide an electronic and hard copy of the sewer maps provided to the Contractor at the start of the project with any red line changes to the system configuration that were identified in the field.
30. CONSTRUCTION SCHEDULE
The Contractor shall submit to the Engineer, for review, a construction schedule in Critical Path Method (CPM) format with accompanying bar chart setting forth the sequence in which construction will proceed. In addition, the Contractor shall submit an updated CPM schedule for review along with the monthly request for partial payment.
The City may, at its sole discretion, withhold partial payment until an updated CPM schedule is submitted.
31. DAILY WORK REPORTS
The Contractor shall provide the City Inspector with daily work reports at the beginning of each working day for a report of the previous wo rking day along with photos.
Contractor to coordinate with City to obtain form standard to conform to.
32. SUBMITTALS
The Contractor shall provide one electronic copy of the construction submittals in PDF format via the City’s Trimble Unity Construct construction managem ent software .
Each submittal shall be numbered. Re-submittals sha ll include the original submittal number followed by a letter indicating the revision (i.e. “A” for the first revision, “B” for the second revision). Submittals shall be provided as r equired by the Contract Documents.
The Contractor shall be responsible for conforming to the requirements of the specifications. The Contractor shall provide, at a minimum, the following submittals to the City within twenty (20) calendar days after the issuance of the Award of Contract Notification Letter and prior to beginning work.
Each submittal item shall include a signed cover sheet, of which a template will be provided by the City. The cover sheet shall be filled out completely and legibly.
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GP – General Provisions
SP – Special Provisions
TP – Technical Provisions
ITEM DESCRIPTION SPECIFICATION SECTION
1. Construction Schedule GP 8.05 and SP 30
2. Traffic Control Plan GP 9.20 and SP 11
3. Notification Letter SP 27
4. Water Pollution Control Plan GP 9.12 and SP 12
5. Designation of Site Safety and Health Officer(s) SP 8
6. Health and Safety Plan SP 8
7. Emergency Contact List N/A
8. Site Video Inspection DVD SP 18
9. Daily Work Report SP 31
10. Dewatering Plan TP 2
11. Wastewater Bypass Plan TP 3
12. Wastewater Spill Contingency Plan TP 3
13. Trench Sheeting, Shoring, and Bracing Plan GP 9.21 and TP 4
14. CAL/OSHA Excavation Permit GP 9.21 and TP 4
15. Sanitary Sewer System Testing Schedule and Plan TP 13
16. Sanitary Sewer Cleaning Procedure TP 14
Material Submittal List. – The names of the manufacturers/producers of the materials proposed by the Contractor for use under this contract shall be submitted to the Engineer, for review prior to beginning of work. The manufacturer's/ producer’s, materials, test results, specifications and/or certificates of compliance shall be submitted for all applicable products on the list, and shall be dated no earlier than six months from the award date.
ITEM DESCRIPTION SPECIFICATION SECTION
Roadway Items
17. Class I Bedding Material TP 4, City Std. Detail No. 18
18. Class 2 Aggregate Base TP 4, City Std. Detail No.18
19. HMA Base, Type A, 1/2-inch Maximum Gradation TP 8
20. Prime Coat and Tack Coat TP 8
21. Traffic Stripes & Pavement Markings TP 10
22. Type II Slurry Seal TP 21
Structures and Concrete
23. Controlled Low-Strength Material TP 5
24. Concrete TP 9, TP 17, City Std. Detail No. 7
25. Precast Concrete Manhole, Frame & Cover TP 12, City Std. Detail No. 11 & 14
26. Concrete Sealant TP 12
27. Reinforcement Sealant TP 16
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Pipe and Fittings
28. Sewer Cleanout Fittings and Cover TP 11, City Std. Detail No.17
29. Sewer laterals TP 11, City Std. Detail No.16
30. Polyvinyl Chloride Pipe and Fittings TP 19, City St d. Detail No.16
31. High-Density Polyethylene and Fittings TP 20, City Std. Detail No.16
Additional Submittals. – The lists provided are intended to be comprehensive but no claim for completeness is implied, and submittal of each and every item on the lists shall not relieve the Contractor of supplying all information needed, or of complying with any of the other requirements of the specifications. Revised lists may be issued and items may be added to the list supplied.
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BID ITEM DESCRIPTIONS
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BID ITEM DESCRIPTIONS
0-1.01 GENERAL
It is the intent of the Proposal and this Contract Document that the bid for each lump sum or unit price item, as submitted, and as required b y the Contract Documents. All costs in connection with the work, including labor, material s and equipment to fully complete the work, shall be included in the lump sum or unit price named in the Proposal. No item of work required by contract documents for proper and successful completion of the contract will be paid for in addition to the prices submitted in the Proposal. All work not specifically set forth in the Proposal as a pay item shall be considered a subsidiary obligation of the Contractor and all costs in connection therewith shall be included in prices shown in the Proposal.
Full compensation for conforming to the requirements in the Special Provisions (with the exception of Traffic Control) shall be considered as included in the contract prices paid for the various items of work involved and no separate payment will be made therefor.
0-1.02 MEASUREMENT AND PAYMENT
Unless otherwise specified in other individual sections of these specifications, linear foot quantities of pipe shall be based on the linear footage of pipe installed, and depth as measured at the connection to the main from top of pipe to surface.
Lump sum bid items will be measured as a complete job, and are intended to cover payment for all work in connection with the item as indicat ed on the maps and as described throughout these specifications.
Unit price bid items will be measured as described in the bid schedule or specifications.
Bid items for this project are as follows:
Base Bid Item No. 1 – Mobilization & Demobilization
(Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item shall include full compensation for obtaining all bonds, all Contractor-acquired permits, licenses, agreements, certifications, and public and agency notifications; submittal and approval of initial and progress schedules; submittals; moving onto the site of all equipment, materials and staff including obtaining and setting up of Contractor’s staging area/yard; furnishing and erec ting all needed construction facilities, fencing, and project signage; project security; demobilization; preconstruction photographs and video recording of surface features; progress schedules and reports; contract meetings; and record drawings.
Base Bid Item No. 2 – Traffic Control
(Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item includes full compensation for preparing typical and/or detailed traffic control plans in accordance with the latest version of the California Manual on Uniform
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Traffic Control Devices (CA-MUTCD) and approved by the City of San Carlos. In addition, the contract price for this bid item shall include placing, adjusting and removing temporary traffic control measures, such as, but not limited to, flags, cones, barricades, crash barriers, signs, and flaggers (personnel dedicated to controlling and managing traffic); traffic control signs both as required by the Contract Drawings and as part of the approved traffic control plan; and all incidentals necessary for worker, ped estrian and traffic protection, including furnishing all equipment, materials and personnel associated therewith, and in accordance with the Contract Documents. Traffic control shall be provided for all project work areas and shall be provided for the duration of the project.
Base Bid Item No. 3 – Shoring (Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item includes full compensation for preparing typical and/or detailed plan of sheeting, shoring and bracing of excavations and work safety in conformance with Labor Code Sections 6700-6708 and all applicable safety orders and permits. In addition, the contract price for this bid item shall include placing, adjusting, and removing all sheeting, shoring, and bracing of excavations and other areas where required in accordance with the approved plan.
Base Bid Item No. 4 – Open Trench Replacement (up to 15 feet in length) (Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item shall include full compensation for furnishing all labor, equipment, tools, materials, appurtenances, and incidentals for doing all the work necessary to replace up to fifteen (15) feet in length of the sewer lateral by open cut construction, in accordance with City Standard Detail No. 16, “Standard Sewer Latera l”, and City Standard Detail No. 13, “Standard Connection to Man hole Walls” , including, but not limited to: site clearing; sawcutting; excavation; dewatering; protection of existing utilities; diversion of sewage flow; potholing; pipeline segme nt removal; subgrade stabilization if required; installation of bedding; pipeline segment and fittings to match the size and material of the existing lateral (either 4”, 5”, or 6”); man hole or sewer main connection (including replacement of wye or saddle , regardless of existing condition, with wye or sad dle to match the material of the existing main); backfill and compaction; site and surface restoration including reconstruction of concrete curb, gutter, sidewalk, or driveway to the nearest score joint, replacing asphalt, traffic striping, and pavement markings; testing and services related to collection, removal, and dispos al of materials to a Class II/III facility; cleanup; post-CCTV; and pipeline testing in accordance with the Contract Documents.
This bid item shall include up to fifteen (15) feet in length of pipe replacement. Pipe length shall be based on the linear footage of pipe instal led, and depth as measured at the connection to the main from top of pipe to surface.
This bid item shall include up to nine (9) feet of pipe depth. Pipe depth shall be based upon the greatest distance from the top of pipe to the ground surface above the pipe centerline.
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Base Bid Item No. 5 – Replacement or Installation of Sewer Cleanout (Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item shall include full compensation for furnishing all labor, equipment, tools, materials, appurtenances, and incidentals for doing all the work necessary to replace the sewer cleanout in accordance with City Standard Detail No. 17, “Standard Sewer Lateral Cleanout” , including, but not limited to: site clearing; sawcutting; protection of existing utilities; excavation; dewatering; diversion of sewage flow; removing cleanout box and cover; subgrade stabilization if required; installation of bedding; cleanout box and cover; sewer lateral connection; backfill and compaction; site and surface restoration including reconstruction of concrete curb, gutter, sidewalk, or driveway to the nearest score joint and replacing asphalt; testing and services related to collection, removal, and disposal of materials to a Class II/III facility; and cleanup in accordance with the Contract Documents.
Base Bid Item No. 6 – Static Pipe Bursting (up to 40 feet in length) (Per Each Lateral)
Measurement and payment for this item shall be on a unit basis per each lateral. The contract price for this bid item shall include full compensation for furnishing all labor, equipment, backup equipment, tools, materials, appurtenances, and incidentals for doing all the work necessary to replace the sewer lateral by pipe bursting, in accordance with City Standard Detail No. 16, “Standard Sewer Lateral” , and City Standard Detail No. 13, “Standard Connection to Manhole Walls” , including, but not limited to: site clearing; sawcutting; excavation of insertion and receiving pits; dewatering; protection of existing utilities; diversion of sewage flow; potholing; pipe bursting; fusing and installation of HDPE pipe; lubrication; manhole or sewer main connection (including replacement of wye or saddle , regardless of existing condition,
with wye or saddle to match the material
of the existing main); backfill and compaction of entry and exit pits; site and surface restoration including reconstruction of concrete curb, gutter, sidewalk, or driveway to the nearest score joint, replacing asphalt, traffic striping, and pavement markings; testing and services related to collection, removal, and disposal of materials to a Class II/III facility; cleanup; post-CCTV; and pipeline testing in accordance with the Contract Documents.
This bid item shall include up to forty (40) feet in length of pipe replacement. Pipe length shall be based on the linear footage of pipe installed, and depth as measured at the connection to the main from top of pipe to surface.
This bid item shall include up to nine (9) feet of pipe depth. Pipe depth shall be based upon the greatest distance from the top of pipe to the ground surface above the pipe centerline.
Base Bid Item No. 7 – Additional Static Pipe Bursting (beyond 40 feet in length) (Per Linear Foot)
Measurement and payment for this item shall be on a linear foot basis per each lateral.
The contract price for this bid item shall include full compensation for furnishing all labor, equipment, backup equipment, tools, materials, appurtenances, and incidentals for doing all the work necessary to replace the additional length of pipe beyond the forty (40) feet of sewer lateral by pipe bursting, in accordance with City Standard Detail No. 16, “Standard Sewer Lateral” , and City Standard Detail No. 13, “Standard
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Connection to Manhole Walls” , including, but not limited to: site clearing; sawcutting; excavation of insertion and receiving pits; dewatering; protection of existing utilities; diversion of sewage flow; potholing; pipe bursting; fusing and installation of HDPE pipe; lubrication; manhole or sewer main connection (including replacement of wye or saddle , regardless of existing condition, with wye or saddle to match the material of the existing main); backfill and compaction of entry and exit pits; site and surface restoration including reconstruction of concrete curb, gutter, sidewalk, or driveway to the nearest score joint, replacing asphalt, traffic striping, and pavement markings; testing and services related to collection, removal, and disposal of materials to a Class II/III facility; cleanup; post-CCTV; and pipeline testing in accordance with the Contract Documents.
This bid item shall include up to nine (9) feet of pipe depth. Pipe depth shall be based upon the greatest distance from the top of pipe to the ground surface above the pipe centerline.
Base Bid Item No. 8 – Pre-Construction Lateral Cleaning and CCTV Lateral Inspection (Main to Cleanout)
(Per Linear Foot)
Measurement and payment for this item shall be on a linear foot basis in a plane along the longitudinal axis of the pipe as recorded by cable footage. The measurement will be from the center of manholes, or where the sewer does not terminate in a manhole, it shall be measured to the end of the pipe as constructed. The contract price for this bid item shall include full compensation for furnishing all labor, equipment, backup equipment, tools, materials, appurtenances, and incidentals for doing all the work necessary to clean and inspect by closed circuit television (CCTV) sewer laterals in accordance with the Contract Documents.
Payment will include compensation for furnishing al l labor, materials, equipment, and supervision to perform all work necessary for three passes of cleaning, if necessary, CCTV inspection and documentation, as included and in accordance with these Specifications.
If the cleaning and/or inspection of a section can not be successfully performed due to blockage, measurement and payment shall be by the linear foot completed, excluding the length of sewer main that was not inspected by CCTV.
Base Bid Item No. 9 – Excavate Bedrock (Revocable)
(Per Cubic Feet)
This bid item shall be paid at the unit price bid per cubic feet of bedrock excavation indicated on the Drawings or as directed by the Engineer. This payment item will be measured in the trench.
This bid item includes excavating bedrock and prop er disposal of materials. The work includes furnishing all equipment, materials and personnel associated with the foregoing, and in accordance with the Contract Documents. The Engineer during construction operations will make the determination of bedrock material.
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Bid Item Descriptions 2026 Sewer Lateral Replaceme nt Project Page BD-7 Project No. C1737
Base Bid Item No. 10 – Type II Slurry Seal
(Per Square Feet)
This bid item shall be paid per square foot (SF) f or Type II Slurry Seal and shall include full compensation for furnishing all labor, supervision, materials, tools, equipment, and incidentals, and for doing all the work involved in slurry seal placement, complete in place, including sweeping and clearing all debris from the roadway prior to the slurry seal (including pavement delineators), striping removal (thermoplastic, buttons, markers, and markings); installation of the slurry seal; hand-carried notification to nearby residents a minimum of 72 hours prior to application of the slurry seal; protection of existing utility appurtenances such as gate valve covers, utility vaults, storm drains; and clean-up of slurry sand and any construction-related materials, as shown on the pla ns, as specified in the Standard Specifications and these Technical Specifications, and as directed by the Engineer.
Slurry seal work under this item shall be performe d only at sewer lateral locations on streets currently under moratorium where sewer lateral work has occurred, in order to restore the roadway surface to existing conditions. Moratorium streets applicable to this item include 124 Lyndhurst, 1354 Cordilleras, 1455 Alameda de las Pulgas, and 1220 Oak. Slurry seal application shall extend the full width of the roadway, from lip of gutter to lip of gutter, for the length of the street segment as directed by the Engineer. The length of slurry seal application along the roadway shall be a minimum of ten (10) feet centered on the sewer lateral location, unless otherwise directed by the Engineer. Measurement and payment shall be based on the total square footage of the full-width application.
END OF SECTION
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TECHNICAL PROVISIONS
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TABLE OF CONTENTS
SECTION 1 – DEMOLITION OF PIPELINES AND STRUCTURES .................................................................... 1 SECTION 2 – DEWATERING ....................................................................................................................... 6 SECTION 3 – BYPASSING WASTEWATER ................................................................................................... 9 SECTION 4 – EARTHWORK ...................................................................................................................... 11 SECTION 5 – CONTROLLED LOW-STRENGTH MATERIAL ......................................................................... 24 SECTION 6 – PIPEBURSTING .................................................................................................................... 29 SECTION 7 – SHORING ............................................................................................................................ 35 SECTION 8 – ASPHALTIC CONCRETE PAVING .......................................................................................... 41 SECTION 9 – CURBS, GUTTERS, SIDEWALKS, CURB RAMPS, VALLEY GUTTERS, AND DRIVEWAYS ......... 49 SECTION 10 – TRAFFIC STRIPES AND PAVEMENT MARKINGS ................................................................ 53 SECTION 11 – SANITARY SEWER LATERALS............................................................................................. 55 SECTION 12 – PRECAST CONCRETE MANHOLES ..................................................................................... 58 SECTION 13 – SANITARY SEWER SYSTEM TESTING ................................................................................. 61 SECTION 14 – SEWER CLEANING ............................................................................................................. 65 SECTION 15 – CCTV INSPECTION OF EXISTING AND REHABILITATED SEWERS ....................................... 68 SECTION 16 – REINFORCEMENT STEEL ................................................................................................... 75 SECTION 17 – CAST-IN-PLACE CONCRETE ............................................................................................... 80 SECTION 18 – GENERAL PIPING .............................................................................................................. 90 SECTION 19 – POLYVINYL-CHLORIDE PIPE .............................................................................................. 93 SECTION 20 – HIGH-DENSITY POLYETHYLENE PIPE ................................................................................. 98 SECTION 21 – SLURRY SEAL PAVEMENT SURFACING............................................................................ 105
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SECTION 1 – DEMOLITION OF PIPELINES AND STRUCTURES
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall furnish all tools, equipmen t, materials, and supplies and shall perform all labor as required for the demolition, r emoval, disposal, and salvage of all structures, improvements, utilities, and facilities in accordance with the Contract Documents.
B. The WORK of this Section shall include, but shal l not be limited to, the following items:
1. Demolition and disposal of asphalt pavement, con crete pavement, curbs and gutters, and other pavement features.
2. Demolition and disposal of concrete pavement, co ncrete sidewalks, concrete driveways, and other property improvements.
3. Demolition, salvage, and disposal of existing se wer, water, storm drain, drainage inlets/outlets, and other utilities as required to complete the WORK. Items to be salvaged shall be as indicated in the Contract Docu ments and/or as directed by the City.
C. All salvaged items shall become the property of the CONTRACTOR. No salvaged items shall be used in the new WORK without the written approval of the ENGINEER.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
All work in connection with demolition and salvage shall be in accordance with applicable local, state, and federal regulations and safety or ders. Demolition, abandonment, or salvage work shall not begin until all required permits have been obtained and required reports have been filed.
1.3 BURNING AND BLASTING
A. The use of burning for the disposal of refuse, d ebris, and waste materials resulting from abandonment, demolition, and site clearing operations will not be permitted.
B. Blasting is not permitted.
1.4 JOB CONDITIONS
A. The CITY assumes no responsibility for actual co ndition of the facilities to be demolished.
The CONTRACTOR shall visit the site, inspect all facilities, and become familiarized with all existing conditions and utilities.
B. No existing pipeline or structure shall be demol ished without appropriate provision for continuous service.
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PART 2 - PRODUCTS
2.1 Not Used.
PART 3 - EXECUTION
3.1 DEMOLITION
A. General : Demolition WORK shall be conducted in a manner t hat protects against damage to facilities to remain and that provides ne cessary protection against injury to the CONTRACTOR’s and CITY’s personnel, as well as the general public. In general the CONTRACTOR shall perform the WORK with prime consideration to the following:
1. Protection of CONTRACTOR and CITY personnel, as well as the public.
2. Protection of existing facilities to remain.
3. Control noise, shocks, and vibration.
4. Control dust and debris.
5. Access to existing facilities for operation and maintenance by CITY personnel.
6. Coordination and cooperation with the CITY and o ther contractors, particularly with respect to shutdown of existing facilities.
7. Timely and proper disposal of demolition debris.
B. Disposal of all materials shall be performed in compliance with applicable local, state, and federal codes and requirements. No trace of the se structures shall remain prior to placing of backfill in the areas from which structures were removed.
C. The identification and extent of demolition, suc h as, but not limited to, pavement demolition and utility demolition are the responsib ility of the CONTRACTOR. The CONTRACTOR shall make every attempt to minimize the extent of the demolition unless noted otherwise.
D. Asphalt pavement, concrete sidewalk, and concret e curbs and gutters shall be removed as necessary to perform the specified WORK. The lim its of removal shall be saw cut.
When the required improvements have been constructe d, new asphalt pavement, concrete sidewalk, and concrete curbs and gutters s hall be constructed in accordance with the City of San Carlos Standard Details.
E. When existing pipe is removed, the CONTRACTOR sh all plug all resulting abandoned connections whether or not shown. Where removed pip ing is exposed, the remaining piping shall be blind-flanged or fitted with a removable cap or plug.
F. When the existing piping is removed from existin g structures, the CONTRACTOR shall fill all resulting holes in the structures and repa ir any damage such that the finished rehabilitated structure shall appear as a new homogeneous unit with little or no indication of where the new and old materials join. The holes in water-bearing structures shall be filled with non-shrink grout to be watertight and r einforced, as required. In all locations where the surface of the grout will be exposed to v iew, the non-shrink grout shall be recessed to approximately ½ inch back of the expose d surface, and the recessed area shall be filled with cement mortar grout.
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G. Where existing piping is to be abandoned, the CO NTRACTOR shall cut back the abandoned pipe for a distance of 5 feet from any connecting structures. All holes at the existing structures shall be repaired. The abandoned pipe shall be filled with CLSM and capped at both ends prior to backfill.
3.2 STRUCTURE AND PIPING REHABILITATION
A. Certain areas of existing structures, piping, co nduits, and the like will be affected by work necessary to complete modifications under this Cont ract. The CONTRACTOR shall rehabilitate those areas affected by its construction activities.
B. When new piping is installed in existing structu res, the CONTRACTOR shall accurately position core-drilled openings in the concrete. Ope nings shall be of sufficient size to permit a final alignment of pipelines and fittings without deflection of any part and to allow adequate space for satisfactory packing where the p ipe passes through the wall to ensure water tightness around openings so formed. The boxes or cores shall be provided with continuous keyways to hold the filling material in place, and shall have a slight flare to facilitate grouting and the escape of entrained air during grouting. Before placing the non-shrink grout, concrete surfaces shall be sandbl asted, thoroughly cleaned of sand and any other foreign matter, and shall be coated with epoxy bonding compound.
C. When new piping is to be connected to existing p iping, the existing piping shall be cut square and ends properly prepared for the connection required. Any damage to the lining and coating of the existing piping shall be repaire d by the CONTRACTOR. Dielectric insulating joints shall be installed at interconnec tions between new and existing piping, if required.
D. Existing reinforcement to remain in place shall be protected, cleaned, and extended into new concrete. Existing reinforcement not to be retained shall be cut off as follows:
1. Where new concrete joins existing concrete at th e removal line, reinforcement shall be cut off flush with the concrete surface at the removal line.
2. Where the concrete surface at the removal line i s the finished surface, the reinforcement shall be cut back 2 inches below the finished concrete surface, the ends painted with epoxy paint, and the remaining ho les patched with cement mortar grout.
3.3 BELOW-GRADE DEMOLITION
A. Footings, foundation walls, below-grade construc tion, and concrete slabs on grade shall be demolished and removed to a depth which will not interfere with new construction, but not less than 12 inches below existing ground s urface or future ground surface, whichever is lower.
B. Below-grade areas and voids resulting from demol ition of structures shall be completely filled.
C. All fill and compaction shall be in accordance w ith Section 4, Earthwork.
D. After fill and compaction, surfaces shall be gra ded to meet adjacent contours and to provide flow to surface drainage structures, unless noted otherwise.
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3.4 DISPOSAL OF DEMOLISHED MATERIALS
A. Demolition and removal of debris shall be conduc ted to ensure minimum interferences with roads, streets, walks, and other adjacent occupied or used facilities. Alternate routes shall be provided around closed or obstructed traffic ways.
B. Site debris, rubbish, and other materials result ing from demolition operations shall be legally removed and disposed of at the CONTRACTOR’s expense.
3.5 SALVAGE
A. The CONTRACTOR may salvage and restore such item s as, but not limited to, fences, gates, street signs, retaining walls, road barriers , guard rails, and other items when in good and reasonable condition and approved by the E NGINEER. The salvage shall be performed in a manner that will preserve the condition of the item being salvaged. Items not in salvageable condition shall be demolished, r emoved, and replaced. All items not in usable condition at the time of replacement shal l be removed and replaced at the CONTRACTOR’s cost to the satisfaction of the ENGINEER.
3.6 OCCUPANCY AND POLLUTION CONTROL
A. Water sprinkling, temporary enclosures, chutes, and other suitable methods shall be used to limit dust and dirt rising and scattering i n the area. The CONTRACTOR shall comply with government regulations pertaining to environmental protection.
B. Water shall not be used when it creates hazardou s or objectionable conditions such as mud, flooding, or pollution.
3.7 PROTECTION
A. Safe passage of persons around the area of demol ition shall be ensured. Operations shall be conducted to prevent injury to people and damage to adjacent buildings, structures, or other facilities.
B. Interior and exterior shoring, bracing, or suppo rts shall be provided to prevent movement, settlement, or collapse of structures to be demolis hed, and to adjacent facilities to remain.
C. Existing landscaping materials, structures, and appurtenances that are not to be demolished shall be protected.
3.8 CLEANING
A. During and upon completion of WORK, the CONTRACT OR shall promptly remove unused tools and equipment, surplus materials, rubbish, debris, and dust and shall leave areas affected by the WORK in a clean, approved condition.
B. Adjacent structures shall be cleaned of dust, di rt, and debris caused by demolition, as directed by the ENGINEER or governing authorities, and adjacent areas shall be returned to the condition existing prior to start of WORK.
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END OF SECTION
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SECTION 2 – DEWATERING
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall provide all labor, materials, and equipment necessary to dewater trench and structure excavations, in accord ance with the requirements of the Contract Documents, to enable the pipes and structu res to be installed in excavations that are free from standing or flowing water that m ay be due to groundwater, surface water, storm water, precipitation, or wastewater.
1.2 CONTRACTOR SUBMITTALS
Prior to commencement of excavation, the CONTRACTOR shall submit a detailed plan and operation schedule for dewatering of all excava tions. The CONTRACTOR shall be able to demonstrate the system proposed and verify that adequate equipment, personnel, and materials are provided to dewater th e excavations at all locations and times. Additional requirements are identified in Se ction 4, Earthwork. The dewatering submittal shall be submitted to the ENGINEER at the same time as the shoring submittal.
1.3 QUALITY CONTROL
A. The CONTRACTOR shall control the rate and effect of the dewatering in such a manner as to avoid all settlement and subsidence.
B. All dewatering operations shall be adequate to a ssure the integrity of the finished project.
C. Where critical structures or facilities exist im mediately adjacent to areas of proposed dewatering, reference points shall be established a nd observed at daily intervals to detect any settlement that may develop. The CONTRAC TOR shall conduct the dewatering operation in a manner that protects adja cent structures and facilities. The cost of repairing any damage to adjacent structures and restoration of facilities shall be the responsibility of the CONTRACTOR.
PART 2 - PRODUCTS
2.1 EQUIPMENT
Dewatering, where required, may include the use of wells, well points, sump pumps, temporary pipelines for water disposal, rock or gra vel placement, and other means.
Standby pumping equipment shall be maintained on the jobsite.
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PART 3 - EXECUTION
3.1 GENERAL REQUIREMENTS
A. The CONTRACTOR shall provide all equipment neces sary for dewatering. It shall have on hand, at all times, sufficient pumping equipment and machinery in good working condition and shall have available, at all times, c ompetent workers for the operation of the pumping equipment. Adequate standby equipment shall be kept available at all times to ensure efficient dewatering and maintenance of d ewatering operation during equipment or power failure.
B. Dewatering for structures and pipelines shall co mmence no later than when groundwater is first encountered, and shall be continuous until such time as water can be allowed to rise in accordance with the provisions of this Sect ion and to protect structures, piping, and other project features.
C. At all times, site grading shall promote drainag e away from excavations. Surface runoff shall be diverted from excavations. Water entering the excavation from surface runoff shall be collected in shallow ditches around the pe rimeter of the excavation, drained to sumps, and be pumped or drained by gravity from the excavation to maintain a bottom free from standing water.
D. Dewatering shall at all times be conducted in su ch a manner as to preserve the undisturbed bearing capacity of the subgrade soils at proposed bottom of excavation.
Dewatering shall lower the water outside the excava tion to ensure that seepage and migration of soil particles do not occur through openings in the shoring.
E. If subgrade soils are disturbed or loosened by t he upward seepage of water or an uncontrolled flow of water, the affected areas shal l be excavated and replaced in accordance with Section 4, Earthwork, at no additional cost to the CITY.
F. The CONTRACTOR shall maintain the water level 3 feet below the bottom of any excavation in all WORK areas where groundwater occu rs during excavation, construction, backfilling, and up to acceptance.
G. Flotation of pipe, manholes, and equipment shall be prevented by the CONTRACTOR by maintaining a positive and continuous removal of water. The CONTRACTOR shall adequately keep excavations dewatered.
H. If well points or wells are used, they shall be adequately spaced to provide the necessary dewatering and shall be sand packed and/or other me ans used to prevent pumping of fine sands or silts from the subsurface. Subsurface soil shall not be removed by the dewatering operation.
I. The release of groundwater to its static level s hall be performed in such a manner as to maintain the undisturbed state of the natural found ation soils, prevent disturbance of compacted backfill, and prevent flotation or movement of structures or pipelines.
J. The CONTRACTOR’s dewatering operations shall not interfere with vehicle or pedestrian traffic. Under no circumstances shall de watering water be allowed to flood
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streets and cause hazardous conditions for vehicula r or pedestrian traffic. Dewatering pump noise shall be mitigated, especially at night. Any mitigating measures taken to conform to these requirements shall be at no extra expense to the CITY. The CONTRACTOR shall obtain any and all permits required in conjunction with dewatering operations, including permits for construction of dewatering wells.
K. The CONTRACTOR shall dispose of water from the W ORK in a suitable manner without nuisance or damage to adjacent property. No water s hall be discharged into sanitary sewers or storm drains without the prior written co nsent of the CITY. Water shall be filtered using an approved method to remove sand, s ilt, and fine-sized soil particles before disposal into any drainage system. The CONTR ACTOR shall remove and dispose of any sand or silt that accumulates in the drainage systems used for water discharge, at no additional cost to the CITY.
END OF SECTION
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SECTION 3 – BYPASSING WASTEWATER
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish all tools, equipment, materials, and supplies, and shall perform all labor as required for the bypassing of wastewater in order to complete the WORK of this Contract. CONTRACTOR shall be responsible for bypassing wastewater in a way that assures that no wastewater is allowed to leak outside of the sanitary sewer system or the bypass pipelines. If leakage does occur, CONTRACTOR shall pay all fines and reimburse the City for all costs associated wit h the cleanup of the leakage, as well as costs associated with legal actions.
1.2 SUBMITTALS
The CONTRACTOR shall submit a plan for bypassing wa stewater as required to complete the WORK indicated in the Contract Documen ts. The submittal shall identify the type, size, and quantity of all pumps, motors, and power equipment; type and size of all piping, fittings, and connections; location of bypass pumps, standby pumps, and pipes; and anticipated schedule for bypass operation.
The Contractor shall also submit to the Engineer, f or review, a contingency plan that outlines procedures to be implemented to prevent: s ewage spills onto streets or into basements of buildings, backup into service laterals, and sewage from entering the storm drain system.
PART 2 - PRODUCTS
Not used.
PART 3 - EXECUTION
3.1 GENERAL
A. Flow in the existing sewers shall not be restric ted or dammed for any period of time without the approval of the ENGINEER. Prior to plugging any lines, the CONTRACTOR shall notify the ENGINEER at least 24 hours in adva nce. All wastewater facilities shall remain in continuous and full operation during construction.
B. Bypassing of untreated wastewater to surface wat er or drainage courses shall not be permitted. The CONTRACTOR shall adhere to all agenc y restrictions regarding the transport and conveyance of wastewater.
C. All pumps and piping shall be sized to adequatel y convey the flows anticipated at each bypass application. The bypass system shall be wate rtight; no leakage will be allowed.
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Diversion pumping equipment and piping shall be tes ted for leaks prior to pumping sewage. At no time shall the sanitary sewer system become surcharged due to diversion of flow.
D. Diversion of sewage flow shall not be implemente d during rainy weather, unless authorized by the ENGINEER. High sewage flow condit ions may require the CONTRACTOR to temporarily suspend work. Work that requires sewage diversion shall be suspended until sewage flow conditions allow for resumption of diversion activities.
Days in which the suspension is in effect shall not be considered working days, and no additional compensation will be allowed therefor.
E. The CONTRACTOR shall take all necessary measures to ensure that sewage does not spill onto the street or onto private properties. The CONTRACTOR shall be responsible for all costs associated with the clean-up or damag e from any sewage spills or debris resulting from diversion of flows.
3.2 TEMPORARY PUMPING
A. Where temporary pumps are required to bypass any sewage, the CONTRACTOR shall not start the bypassing until the bypassing submittal has been favorably reviewed by the CITY.
B. Wastewater shall be bypassed during the connecti on of new pipelines to existing pipelines, unless the connection is made at a manho le and all wastewater can be contained within the collection system.
C. Where bypass pipelines are required to cross tra ffic lanes, and will be in place for more than three (3) days, the piping and fittings shall be buried a minimum of 4 inches below the pavement surface and backfilled with temporary asphalt concrete surfacing. At no time shall traffic lanes be blocked or closed, unless specifically allowed in writing by the CITY.
D. Temporary ramps may be constructed over pipeline s 6 inches in diameter, or less, to allow access to driveways. Where pipelines larger t han 6 inches in diameter cross driveways, they shall be buried a minimum of 4 inch es below the existing ground or pavement surface and backfilled with temporary asphalt concrete surfacing. No driveway access shall be blocked without the written authorization of the affected property owner.
E. Pressure relief valves shall be provided at the high point in each section of elevated piping.
F. Pumped bypass systems shall be continuously moni tored.
END OF SECTION
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SECTION 4 – EARTHWORK
PART 1 - GENERAL
1.1 THE REQUIREMENT
The work of this Section includes all earthwork req uired for construction of the project.
Such earthwork shall include, but not be limited to , the loosening, removing, loading, transporting, depositing, and compacting in its final location of all materials wet and dry, as required for the purposes of completing the work , which shall include, but not be limited to, the furnishing, placing, and removing o f sheeting and bracing necessary to safely support the sides of all excavations; the supporting of structures above and below the ground; all backfilling around pipes and structures and all backfilling of trenches and pits; the disposal of excess excavated materials; b orrow of materials to make up deficiencies for fills; and all other incidental earthwork.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
C. Commercial Standards:
ASTM D 422 Method for Particle-Size Analysis of Soi ls.
ASTM D 698 Test Methods for Moisture-Density Relati ons of Soils and Soil- Aggregate Mixtures, Using 5.5-1b/ (2.49-kg) Rammer and 12-in (304.8-mm) Drop.
ASTM D 1556 Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method.
ASTM D 1557 Test Methods for Moisture-Density Relat ions of Soils and Soil-Aggregate Mixtures Using 10-lb (4.54-kg) Rammer and 18-in (457-mm) Drop.
ASTM D 1633 Test Method for Compressive Strength of Molded Soil-Cement Cylinders.
ASTM D 2419 Test Method for Sand Equivalent Value o f Soils and Fine Aggregate.
ASTM D 2487 Classification of Soils for Engineering Purposes.
ASTM D 2901 Test Method for Cement Content of Fresh ly Mixed Soil-Cement.
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ASTM D 2922 Test Methods for Density of Soil and So il-Aggregate in Place by Nuclear Methods (Shallow Depth).
ASTM D 3744 Test Method for Aggregate Durability In dex ASTM D 3786 Test Method for Hydraulic Bursting Stre ngth of Knitted Goods and Nonwoven Fabrics: Diaphragm Bursting Strength Tester Method.
ASTM D 3787 Test Method for Bursting Strength Knitt ed Goods: Constant- Rate-of-Traverse (CRT), Ball Burst Test
ASTM D 4253 Test Methods for Maximum Index Density of Soils Using a Vibratory Table.
ASTM D 4254 Test Methods for Minimum Index Density of Soils and Calculation of Relative Density.
ASTM D 4318 Test Method for Liquid Limit, Plastic L imit, and Plasticity Index of Soils.
ASTM D 4491 Test Methods for Water Permeability of Geotextiles by Permittivity.
ASTM D 4632 Test Method for Grab Breaking Load and Elongation of Geotextiles.
ASTM D 4751 Test Method for Determining the Apparen t Opening Size of a Geotextile.
1.3 CONTRACTOR SUBMITTALS
A. The CONTRACTOR's attention is directed to the pr ovisions for “Shoring and Bracing Drawings" in Section 9 of the California Labor Code.
B. The type of shoring shall be chosen and designed by the CONTRACTOR.
C. The CONTRACTOR shall prepare and submit a trench and structure excavation dewatering plan which describes in detail the means by which the construction of pipelines and structures under dry conditions is to be accomplished. Also see Section 2, Dewatering, for additional requirements pertaining to dewatering.
D. Backfill Materials: Prior to beginning the WORK, the CONTRACTOR shall submit to the ENGINEER, for review, properties and gradations of all backfill materials proposed for use on the project as specified herein. Testing sha ll be performed by an independent testing laboratory. All costs related to such testing shall be borne by the CONTRACTOR.
1.4 QUALITY ASSURANCE
A. General : All soils testing will be done by an approved thi rd party independent lab approved by the City at the CONTRACTOR’s expense, except as otherwise noted. The
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CONTRACTOR shall provide the ENGINEER at least 24 h ours’ notice in advance of required tests.
B. Where soil material is required to be compacted to a percentage of maximum density, the maximum density at optimum moisture content will be determined in accordance with ASTM D 1557. Where cohesionless, free-draining soil material is required to be compacted to a percentage of relative density, the calculation of relative density will be determined in accordance with ASTM D 4253 and D 425 4. In-place, field-density tests will be performed in accordance with ASTM D 1556, A STM D 2922, or by such other means acceptable to the ENGINEER.
C. In case the tests of the fill or backfill show n oncompliance with the required density, the CONTRACTOR shall accomplish such remedy as may be r equired to ensure compliance. Subsequent testing to show compliance s hall be by a testing laboratory selected by the CITY and shall be at the CONTRACTOR's expense.
D. The CONTRACTOR shall provide access in the trenc h for the soil compaction testing technician or inspector. This shall include providi ng and properly installing safety equipment and temporary shoring to enable compactio n testing at SEVERAL LEVELS in the trench. Should the CONTRACTOR have backfille d to an elevation above that required to be tested, then the backfill shall be e xcavated down to the necessary level for testing and provided at the CONTRACTOR’s cost. Subsequent backfilling shall also be at the CONTRACTOR's cost.
E. Particle size analysis of soils and aggregates w ill be performed using ASTM D 422.
F. Determination of sand equivalent value will be p erformed using ASTM D 2419.
G. Unified Soil Classification System: References in these specifications to soil classification types and standards are set forth in ASTM D 2487. The CONTRACTOR shall be bound by all applicable provisions of said ASTM D 2487 in the interpretation of soil classifications.
H. The determination of durability index will be ma de using ASTM D 3744.
I. The determination of the resistance (R-value) wi ll be made using ASTM D 2824 or California Test Method No. 301, State of California, Department of Transportation.
PART 2 - PRODUCTS
2.1 SUITABLE BACKFILL
A. Backfill shall be suitable, selected, or process ed clean, fine earth, rock, or sand, free from grass, roots, brush, or other vegetation.
B. Backfill placed within 6 inches of any structure or pipe shall be free of rocks or unbroken masses of earth materials having a maximum dimension larger than 3 inches.
C. The following types of backfill materials are de signated and defined as follows:
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1. Sand : 100 percent passing a 3/8-inch sieve, at least 90 percent passing a Number 4 sieve, and a sand equivalent value not less than 28.
2. Class 2 Aggregate Base : The use of recycled aggregate base for trench backfill shall not be allowed in the trench section. The aggregate base shall conform to the provisions of Section 26 (Class 2 Aggregate Base) o f the State Standard Specifications for 3/4-inch maximum grading. The material shall have a minimum Resistance (R-value) of 78, and shall meet the following gradation requirements:
Sieve Size Percentage Passing
1 inch 100
3/4 inch 87 - 100
No. 4 30 - 65
No. 30 5 - 35
No.200 0 - 12
3. Drain Rock and Foundation Support shall be crushed stone, or gravel, durable and free from slaking or decomposition under action or alternate wetting or drying.
The material shall meet the following gradation requirements:
Sieve Size Percentage Passing
2-inch 100
1 ½-inch 90 - 100
3/4-inch 5 - 30
3/8-inch 5 - 20
No.200 0 - 4
4. Class 1 Bedding Material shall be used for City maintained utilities and shall have a durability index of not less than 30 and sand equivalent shall not be less than 40.
The material shall meet the following gradation requirements:
Sieve Size Percentage Passing
1-inch 100
3/4-inch 90 - 100
1/2-inch -
3/8-inch 20 - 55
No.4 0 - 10
No. 8 0 - 5
5. Controlled Low-Strength Material shall conform to the requirements of Section 5, Controlled Low-Strength Material.
6. Topsoil : Material that has been obtained at the site by re moving soil to a depth not exceeding 2 feet. Removal of the topsoil shall be done after the area has been stripped of vegetation and debris.
D. See paragraph 2.2B hereinafter for imported mate rials corrosivity requirements.
2.2 UNSUITABLE MATERIAL
A. Unsuitable Material : Unsuitable soils for backfill material shall inc lude soils which, when classified under ASTM D 2487, fall in the classifications of Pt, OH, CH, MH, or OL.
In addition, any soil that cannot be compacted suff iciently to achieve the percentage of
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maximum density specified for the intended use shal l be classified as unsuitable material.
B. Chemical testing for corrosivity shall be perfor med for all materials proposed for use as backfill for metallic or reinforced concrete pipe. The testing shall be in accordance with the requirements of California Test Methods 532 and 643 of the California Department of Transportation. Backfill materials shall be cons idered unsuitable when the chloride concentration exceeds 500 ppm, sulfate concentration exceeds 1,500 ppm, resistivity is less than 2,000 ohm-cm or pH is less than 6.5. Testing shall be performed by a qualified laboratory as approved by the ENGINEER. The test re sults shall be submitted to the ENGINEER for acceptance during the submittal process.
C. Saturated native materials which are over optimu m moisture content shall not be considered "unsuitable" simply because they are too wet for proper compaction. The CONTRACTOR shall, at its cost, prepare these materials in accordance with paragraph
3.9D. Alternatively, the CONTRACTOR may remove the native materials and provide imported backfill material, at no additional cost to the CITY.
2.3 USE OF SUITABLE BACKFILL MATERIAL TYPES
A. The CONTRACTOR shall use the types of materials as designated herein for all required backfill construction hereunder.
B. Backfill types shall be used in accordance with the following provisions:
1. Bedding shall be Class 2 Aggregate Base unless i ndicated otherwise on the plans.
2. Pipe zone backfill, as defined in paragraph 3.8 of this Section, shall consist of Class 2 Aggregate Base unless otherwise indicated on the plans.
3. Trench zone backfill for pipelines, as defined i n paragraph 3.8, shall be Class 2 Aggregate Base unless otherwise indicated on the plans.
4. Trench backfill for pipelines under structures s hall be the same material as used in the pipe zone, unless noted otherwise in the Contract Documents.
5. Final backfill, as defined in paragraph 3.8, sha ll consist of Class 2 Aggregate Base unless otherwise indicated on the plans.
6. Backfill around structures, vaults, and valve bo xes shall be Class 2 Aggregate Base. At its option and without additional cost to the CITY, the CONTRACTOR may elect to use CLSM for backfill around structure s in lieu of Class 2 Aggregate Base.
7. Backfill materials beneath structures shall be a s follows:
a. Under structures where groundwater must be remov ed to allow placement of concrete or where soft bottom conditions are present, drain rock material shall be used with a geotextile fabric envelope (mi nimum 1-foot overlap) around the rock to prevent migration of fines.
b. In all other cases, Class 2 Aggregate Base mater ials shall be used.
8. Backfill used to replace pipeline trench overexc avation shall be a layer of drain rock material with a geotextile fabric envelope around the drain rock (minimum 1- foot overlap) to prevent migration of fines for wet or soft bottom trench conditions.
Backfill used to replace pipeline trench overexcavation shall be the same material as used for the pipe bedding if the trench conditio ns are not wet or soft, and a geotextile fabric envelope shall not be required.
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9. Controlled low-strength material may be used for pipe bedding, pipe zone fill, and trench zone fill when approved by the ENGINEER or s hown in the Contract Documents. Substitution for imported bedding or bac kfill material shall be at no additional cost to the CITY.
10. Foundation support materials shall be the same as defined for drain rock, shall be to the thicknesses identified in the Contract Documents, and shall be wrapped with a geotextile fabric envelope.
PART 3 - EXECUTION
3.1 STRUCTURE EXCAVATION
A. General : Except when specifically provided to the contrary, excavation shall include the removal of all materials of whatever nature encountered, including all obstructions of any nature that would interfere with the proper executi on and completion of the work. The removal of said materials shall conform to the lines and grades shown or ordered. Unless otherwise provided, the entire construction site sh all be stripped of all vegetation and debris, and such material shall be removed from the site prior to performing any excavation or placing any fill. The CONTRACTOR shal l furnish, place, and maintain all supports and shoring that may be required for the s ides of the excavations, and all pumping, ditching, or other measures required for t he removal or exclusion of water, including storm water, groundwater, and wastewater reaching the site of the work from any source so as to provide dry working conditions and to prevent damage to the work or adjoining property. Excavations shall be sloped or otherwise supported in a safe manner in accordance with applicable State safety r equirements and the requirements of OSHA Safety and Health Standards for Construction (29CFR1926).
B. Excavation Beneath Structures, Manholes, Vaults, an d Others : Except where otherwise specified for a particular structure or o rdered by the ENGINEER, excavation shall be carried to the grade of the bottom of the bedding. Where indicated in the Contract Documents or ordered by the ENGINEER, areas beneath structures shall be overexcavated. When such overexcavation is shown, b oth overexcavation and subsequent backfill to the required grade shall be performed at the cost of the CONTRACTOR. When overexcavation is ordered by the E NGINEER, the CONTRACTOR shall be compensated on a unit price basis. The exposed surface shall be scarified to a depth of 6 inches, brought to optimum moisture content, and compacted to 95 percent of maximum density. Where overexcavation is ordered by the ENGINEER to place drain rock over wet or soft soils, scarifi cation and recompaction shall not be performed.
3.2 PIPELINE AND UTILITY TRENCH EXCAVATION
A. General : Unless otherwise shown or ordered, excavation for pipelines and utilities shall be open-cut trenches. Trench widths shall be kept a s narrow as is practical for the method of pipe zone densification selected by the C ONTRACTOR, but shall have a minimum width at the bottom of the trench equal to the outside diameter of the pipe plus 8 inches. The maximum width at the top of the pipe shall be equal to the outside diameter of the pipe plus 12 inches.
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B. Trench Bottom : The pipe bedding shall be given a final trim, us ing a string line for establishing grade, such that each pipe section whe n first laid will be continually in contact with the bedding along the extreme bottom of the pipe. Rounding out the trench to form a cradle for the pipe will not be required. Excavation for bell holes at pipe joints and for fittings shall be made as required.
C. Open Trench : The maximum amount of open trench permitted in any one location shall be 300 feet, or the length necessary to accommodate the amount of pipe installed in a single day, whichever is greater. All trenches shall be fully backfilled at the end of each day or, in lieu thereof, shall be covered by heavy steel plates adequately braced and capable of supporting vehicular traffic in those locations where it is impractical to backfill at the end of each day. Use of steel traffic plates is subject to the prior approval of the agency issuing the encroachment permit. Traffic pla tes shall be provided with non-skid coating and cold mix asphalt around the plate perimeter.
D. Foundation Support : When ordered by the ENGINEER, trenches shall be overexcavated beyond the depth shown. Such overexca vation shall be to the depth ordered. The trench shall then be backfilled to the grade of the bottom of the bedding.
The CONTRACTOR shall be compensated on a unit price basis in accordance with the bid item for overexcavation.
E. Overexcavation Not Ordered, Specified, or Shown : Any overexcavation carried below the grade ordered, specified, or shown shall be backfilled to the required grade with the specified material and compaction. Such work shall be performed by the CONTRACTOR at its own expense.
3.3 EXCAVATION IN LAWN AREAS
Where excavation occurs in lawn areas, the sod shal l be carefully removed and stockpiled, watered, and preserved for replacement. Excavated material may be placed on the lawn, provided that a drop cloth or other su itable method is employed to protect the area from damage. The area shall not remain cov ered for more than 72 hours.
Immediately after completion of backfilling and tes ting of the pipeline, the sod shall be replaced in a manner so as to restore the lawn as n ear as possible to its original condition. CONTRACTOR shall provide new sod in kind if stockpiled sod has remained so for more than 72 hours.
3.4 EXCAVATION IN VICINITY OF TREES
Except where trees are shown to be removed, trees shall be protected from injury during construction operations. CONTRACTOR shall secure ap proval from the ENGINEER before cutting tree roots larger than 2 inches in diameter. The ENGINEER reserves the right to not allow cutting of roots greater than 2 inches in diameter and to order digging around the root in question. There is to be no additional payment for avoiding such roots.
All other roots that need to be cut shall be cut with a saw or pruning shears and shall be cleanly cut.
3.5 ROCK EXCAVATION
A. Rock excavation shall include removal and dispos al of the following:
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1. All boulders measuring 1/3 of a cubic yard or mo re in volume.
2. Concrete or masonry structures which have been a bandoned, excluding concrete pavement sections.
3. Rock which exceeds medium rock hardness , as defined in “Subsurface Manual for Design and Construction of Buildings," 1976, pu blished by the American Society of Civil Engineers. These definitions are summarized in the following:
ROCK HARDNESS CRITERIA
Very Hard Cannot be scratched with knife or sharp p ick. Breaking of hand specimen requires several hard blows of geolog ist's pick.
Hard Can be scratched with knife or pick only wit h difficulty. Hard blow of hammer required to detach hand specimen.
Moderately Can be scratched with knife or pick. Go uges or Hard grooves to 1/4 inch deep can be excavated by hard blow of point of a geologist's pick. Hand specimens can be
detached by moderate blow.
Medium Can be grooved or gouged 1/16 inch deep by firm pressure on knife or pick point. Can be excavated in small c hips to pieces about 1 inch maximum size by hard blows of t he
point of a geologist's pick.
Soft Can be gouged or grooved readily with knife or pick point.
Can be excavated in chips to pieces several inches in size by moderate blows of pick point. Small thin pieces can be broken by finger pressure.
Very Soft Can be carved with knife. Can be excavat ed readily with point of pick. Pieces 1 inch or more in thickness c an be broken with finger pressure. Can be scratched readi ly by fingernail.
Material exceeding medium rock hardness shall be ex cavated by mechanical means.
B. Explosives and Blasting : Blasting will not be permitted.
3.6 DISPOSAL OF EXCESS EXCAVATED MATERIAL
The CONTRACTOR shall remove and dispose of all exce ss excavated material at a suitable site(s) selected by the CONTRACTOR. The CO NTRACTOR shall obtain all necessary fill and grading permits and a written re lease from property owners prior to use of said sites.
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3.7 BACKFILL - GENERAL
A. Backfill shall not be dropped directly upon any structure or pipe. Backfill shall not be placed around or upon any structure until the concrete has attained sufficient strength to withstand the loads imposed.
B. Except for drain rock materials being placed in overexcavated areas or trenches, backfill shall not be placed until after all water is removed from the excavation.
3.8 PIPE AND UTILITY TRENCH BACKFILL
A. Pipe Zone Backfill : Pipe zone backfill shall be performed in accorda nce with the following requirements:
1. The pipe zone is defined as that portion of the vertical trench cross-section lying between a plane 9 inches below the bottom surface o f the pipe (i.e., the trench subgrade) and a plane at a point 12 inches above th e top outside surface of the pipe bell. The bedding is defined as that portion o f the pipe zone backfill material between the trench subgrade and a level line that v aries from the bottom of the pipe to the spring line. The bedding for flexible pipe is defined as that portion of the pipe zone backfill material between the trench subg rade and the bottom of the pipe.
2. Bedding shall be provided for all pipelines, unl ess the pipe is installed using trenchless drilling methods.
3. After compacting the bedding the CONTRACTOR shal l perform a final trim using a string line for establishing grade, such that eac h pipe section when first laid will be continually in contact with the bedding along th e extreme bottom of the pipe.
Excavations for bell holes at each pipe joint shall be made as required.
4. The pipe zone shall be backfilled with the speci fied backfill material. The CONTRACTOR shall exercise care to prevent damage to the pipe and, if applicable, the pipeline coating and/or cathodic bo nds during the installation and backfill operations. The CONTRACTOR shall hand shovel slice the bedding along the sides of the pipe in order to ensure filling any voids under the pipe haunches.
B. Trench Zone Backfill : After the pipe zone backfill has been placed as specified above, and after all excess water has completely drained f rom the trench, backfilling of the trench zone may proceed. The trench zone is defined as that portion of the vertical trench cross-section lying between a plane 12 inches above the top outside surface of the pipe bell and a plane at a point 18 inches below the finished surface grade, or if the trench is under pavement, 36 inches below the finished surface grade.
C. Sewer Warning Tape : Install warning tape per Section 17, General Pipi ng, wherever pipe is installed by open-cut or spot repair construction methods.
D. Final Backfill : Final backfill is all backfill in the trench cros s-sectional area within 18 inches of finished grade in landscaped or agricultu ral areas, or if the trench is under pavement, all backfill within 36 inches of finished grade. Final backfill for gravel roads or other areas shall be as indicated in the Contract Documents.
E. Final Backfill in Lawn Areas : The CONTRACTOR shall final backfill all excavations in areas within 18 inches of finished grade with topso il. Said topsoil may be segregated
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from excavated materials or may be imported topsoil material. Sod or other surface improvements shall then be installed.
3.9 PLACING AND SPREADING OF BACKFILL MATERIALS
A. Backfill materials shall be placed and spread ev enly in layers. The backfill layers shall be evenly spread so that each layer shall not exceed 8 inches in uncompacted thickness.
Backfill layers greater than 8 inches but no more t han 12 inches may be used after the CONTRACTOR demonstrates to the ENGINEER a suitable compaction method that achieves required compaction levels.
B. During spreading, each layer shall be thoroughly mixed as necessary to promote uniformity of material in each layer. Pipe zone backfill materials shall be manually spread around the pipe so that when compacted, the pipe zone backfill provides uniform bearing and side support.
C. Where the backfill material moisture content is below the optimum moisture content, water shall be added before or during spreading unt il the proper moisture content for compaction is achieved.
D. Where the backfill material moisture content is too high to permit the specified degree of compaction, the material shall be bladed, aerated, or dried and/or mixed with suitable material with lower moisture content until the moisture content is satisfactory.
3.10 COMPACTION OF BACKFILL MATERIALS
A. Each layer of backfill material shall be mechani cally compacted to the specified percentage of maximum density. Equipment that is consistently capable of achieving the required degree of compaction shall be used, and ea ch layer shall be compacted over its entire area while the material is at the required moisture content.
B. Flooding, ponding, or jetting shall not be used.
C. Equipment weighing more than 10,000 pounds shall not be used closer to trench walls than a horizontal distance equal to the depth of the fill against the wall at that time. Hand- operated power compaction equipment shall be used where use of heavier equipment is impractical or restricted due to weight limitations.
D. Compaction Requirements : The following compaction requirements shall be in accordance with ASTM D 1557 for cohesive-type mater ials and in accordance with ASTM D 4253 and D 4254 for cohesionless, free-draining-type materials. Where agency, utility company, or encroachment permit requirement s govern, the highest compaction standards shall apply.
Percentage of
Location or Use of Fill Maximum Density
Pipe zone backfill including bedding
and overexcavated zone 90
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Trench zone backfill 95
Final backfill, beneath paved areas or
structures 95
Final backfill, in landscaped or
agricultural areas 90
Backfill beneath structures 95
Backfill around structures beneath paved areas 95
Backfill around structures in landscaped or
agricultural areas 90
Topsoil 80
E. Trench Backfill Requirements : The pipe has been structurally designed based upo n the trench configuration specified herein. The CONT RACTOR shall maintain the indicated trench cross-section up to a horizontal p lane lying 12 inches above the top of the pipe.
1. If, at any location under said horizontal plane, the CONTRACTOR slopes the trench walls or exceeds the maximum trench widths i ndicated in the Contract Documents, the pipe zone backfill shall be improved , or the pipe class improved, at no additional cost to the CITY. "Improved" backf ill shall mean controlled low- strength material or other materials acceptable to the ENGINEER.
2. If the allowable deflection specified for the pi pe is exceeded, the CONTRACTOR shall expose and reround or replace the pipe, repai r all damaged lining and coating, and reinstall the pipe zone material and trench backfill, as specified, at no additional expense to the CITY.
F. Shoring Removal : Shoring shall be removed as soon as the trench ba ckfill has been placed and compacted to a level adequate to support the trench walls, unless otherwise indicated. Compaction of the backfill shall be continuous throughout the shoring removal process in order to minimize the potential creation of voids between trench walls and compacted trench backfill. Alternatively, voids cre ated by removal of shoring may be filled by allowing low-density concrete placed on t op of backfill to flow into the voids or by grouting with air-entrained concrete grout. Shoring shall be completely removed prior to compaction of the top 5 feet of trench depth.
3.11 TRENCH PLATES
When backfilling trenches and excavations, whether transverse or longitudinal, and the work cannot be properly completed within the same working day, trench plates with non-
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skid surface treatment will be required to maintain all vehicular, bicycle and pedestrian traffic flow. The following conditions shall apply:
1. All trench plates shall have a skid resistant su rface treatment having a minimum coefficient of friction equivalent to 0.35 per California Test Method 342.
2. For trenches and excavation with spans greater t han four feet (4’), a structural design shall be prepared by a Civil Engineer licens ed by the State of California.
Designs shall be submitted to the Engineer.
3. A Rough Road Sign (W33) shall be used in advance of all trench plates.
4. All trench plating shall be designed for HS20-44 Truck loading per the Caltrans Bridge Design Manual.
5. All steel trench plates shall extend beyond the edge of the trench wall a minimum of twelve inches (12”).
6. All steel trench plates shall be fully supported around the perimeter to prevent tipping.
7. Trenches and excavations shall be adequately sho red or braced to withstand highway traffic loads.
8. All trench plates shall be tack welded together at the end of each day.
9. All trench plates shall be pinned in each corner to prevent movement.
10. Temporary paving or cold-mix asphalt concrete (cutback) shall be placed around all edges of the trench plates.
11. A maximum of fifty (50) lineal feet of trench p lating shall be allowed unless otherwise approved in writing by the Engineer.
12. Trench plates shall be minimum 1 ¼ inches thick.
13. Steel trench plate deformation my occur during loading; however, if a steel plate is deformed without loading to at least ½-inch per 8 feet of length, the plate shall be removed and replaced.
3.12 TEMPORARY PAVING
A minimum of 2 inches of cold- or hot-mix temporary asphalt shall be placed in finished trenches and rolled to a smooth surface at the end of each day unless final paving can be completed or steel plates are used to cover tren ches in paved streets. Traffic plates shall be subject to the requirements of paragraph 3.2C. The temporary asphalt shall be placed within 1/4 inch of finished pavement grade.
END OF SECTION
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SECTION 5 – CONTROLLED LOW-STRENGTH MATERIAL
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall furnish all materials for c ontrolled low-strength material (CLSM) in accordance with the provisions of this Se ction and shall mix, place, finish, and do all other work as required to produc e a cementitious, hand- excavatable mixture of aggregate, cement, pozzolan, water, and admixtures used as pipe zone backfill, trench zone backfill, and st ructure backfill in accordance with the Contract Documents.
B. The CONTRACTOR is hereby advised that flotation or displacement of the pipe may occur during installation of the CLSM. The CON TRACTOR shall make necessary provisions to prevent flotation and ensur e that the pipe is installed in accordance with the Contract Documents.
C. CLSM is also referred to as controlled density f ill (CDF).
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
Commercial Standards
ACI 229 Controlled Low Strength Materials
ACI 232 Fly Ash/Other Pozzolans in Concrete
ASTM C 31 Practices for Making and Curing Concrete Test Specimens in the Field
ASTM C 39 Standard Test Method for Compressive Stre ngth of Cylindrical Concrete Specimens
ASTM C 42 Standard Test Method for Obtaining and Te sting Drilled Cores and Sawed Beams of Concrete
ASTM C 94 Specifications for Ready-Mixed Concrete
ASTM C 150 Specification for Portland Cement
ASTM C 260 Specification for Air-Entraining Admixtu res for Concrete ASTM C 494 Specification for Chemical Admixtures fo r Concrete
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ASTM C 618 Specification for Fly Ash and Raw or Cal cined Natural Pozzolan for Use as a Mineral Filler in Portland Cement Concrete
ASTM D 1586 Method of Penetration Test and Split Ba rrel Sampling of Soils
ASTM D 1633 Test Method for Compressive Strength of Molded Soil- Cement Cylinders
ASTM D 2922 Test Methods for Density of Soil and So il-Aggregate in Place by Nuclear Methods (Shallow-Depth)
1.3 CONTRACTOR SUBMITTALS
Mix Design : Prior to beginning the WORK, the CONTRACTOR shall submit to the ENGINEER, for review, CLSM mix designs which shall show the proportions and gradations of all materials proposed for each c lass and type of CLSM specified herein. The mix designs shall be tested by an independent testing laboratory for properties specified herein. The results of the independent testing laboratory shall be submitted with the CLSM mix des igns. All costs related to such testing shall be borne by the CONTRACTOR.
1.4 QUALITY ASSURANCE
A. General:
1. All testing during the WORK will be done by a te sting laboratory of the CITY’s choice at the CITY’s expense, except as otherwise noted.
2. In case the test of the CLSM shows noncompliance with the specifications, the CONTRACTOR shall accomplish such remedy as may be required to ensure compliance. Subsequent testing to show comp liance shall be by a testing laboratory selected by the CITY and shall be at the CONTRACTOR’s expense.
B. Density : The installed density of the material will be det ermined in accordance with ASTM D 2922.
C. Compressive Strength : The compressive strength will be determined in accordance with ASTM C 39.
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PART 2 - PRODUCTS
2.1 CLSM shall be hand-excavatable mixture of cemen t, pozzolan, coarse and fine aggregate and water that has been mixed in accordance with ASTM C 94.
2.2 USE OF CLSM
CLSM for trench backfill may have lesser slump provided that specified strength requirements are met.
2.3 CEMENT
Cement shall be Type II in accordance with the requirements of ASTM C 150.
2.4 POZZOLAN
Pozzolan shall be added to improve the flowability and shall be Type F in accordance with the requirements of ASTM C 618.
2.5 AGGREGATE
Coarse aggregate shall consist of a well-graded mixture of crushed rock, soil, or sand with a maximum size aggregate of 3/8 inch. On e hundred percent (100%) shall pass the ½-inch sieve. Not more than 30 perc ent shall be retained by the 3/8-inch sieve and not more than 12 percent shall p ass the No. 200 sieve. All material shall be free from organic matter and not contain more alkali, sulfates, or salts than the native materials at the site of the WORK.
2.6 ADMIXTURES
A. Air entraining admixtures shall be added to impr ove the workability and shall be in accordance with the requirements of ASTM C 260.
B. Water reducing agent shall be added to improve t he workability and shall be in accordance with the requirements of ASTM C 494.
2.7 WATER
Water shall be potable, clean, and free from object ionable quantities of silty organic matter, alkali, salts, and other impurities.
2.8 CONTROLLED LOW-STRENGTH MATERIAL
A. CLSM shall be a mixture of cement, pozzolan, coa rse and fine aggregate, admixtures, and water batched by a ready-mix concre te plant and delivered to the WORK by means of standard, transit mixing truck s. The mixture shall
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produce a cementitious hand-excavatable material. The material supplied shall be Controlled Density Fill supplied by Pozzolanic Inte rnational, Flowable Compacting Fill by RMC Lonestar, or approved equal.
B. The actual mix proportion, slump, and water-redu cing agent shall be determined by the CONTRACTOR to meet the uses specified herein.
C. The entrained air content shall be a minimum of 8 percent and a maximum of 20 percent as required by the CONTRACTOR to meet the uses specified herein.
D. The mix design shall consist of 2 sacks cement.
E. The minimum 28-day compressive strength shall be 50 psi, and the maximum 28-day compressive strength shall be 150 psi.
PART 3 - EXECUTION
3.1 PREPARING PLACEMENT FOR CLSM
The subgrade and compacted fill and/or trench to re ceive CLSM shall be complete and acceptable in accordance with Section 4, Earthwork.
3.2 MIXING AND DELIVERING CLSM
A. CLSM shall be batched by a ready-mix batching pl ant acceptable to the ENGINEER.
B. CLSM shall be delivered to the WORK in standard transit mix trucks.
3.3 PLACING CLSM
A. CLSM shall be delivered in place by means of tai lgate discharge, conveyor belts, pumped in place, or other means acceptable to the ENGINEER.
B. CLSM shall be directed in place by means of a vi brator to ensure that all voids, crevices, and pockets are filled with CLSM. Care s hall be taken to avoid over- consolidation of the material. The CLSM shall be t horoughly settled and compacted through the entire depth of the layer that is being consolidated into a dense, homogeneous mass.
C. CLSM shall be continuously placed against fresh material, unless otherwise approved by the ENGINEER. Where new CLSM must be placed against existing CLSM, the placement shall be clean of all loose and foreign material. The surface of existing CLSM shall be soaked a minimum of one ( 1) hour before placement of fresh CLSM. No standing water will be allowed b efore starting placement of fresh CLSM.
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3.4 FINISHING CLSM
The finish surface of CLSM shall be smooth and to t he grade shown or directed by the ENGINEER. Finishing by wood float, steel trowel, or other similar methods is not required.
3.5 PROTECTING CLSM
CLSM shall be protected from running water, rain, f reezing, or other conditions that could damage the material until the material has been accepted and final fill complete.
3.6 TRENCH BACKFILL
A. No equipment, traffic, or backfill shall be allo wed on the CLSM until the surface of the CLSM is able to withstand a 20 psi load with out displacement or damage.
If necessary, the CONTRACTOR shall provide steel tr ench plates that span the trench, as specified in Section 4, Earthwork, until the CLSM has reached the required strength.
END OF SECTION
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SECTION 6 – PIPEBURSTING
PART 1 - GENERAL
1.1 THE REQUIREMENT
This specification covers the work necessary to furnish and install, complete and in place, high-density polyethylene pipe (HDPE) by the pipebu rsting method, as shown on the drawings and specified herein. The CONTRACTOR shall provide all materials, labor, equipment, and services necessary for bypass pumpin g and/or diversion of sewage flows, installation of HDPE pipe, reconnection of a ctive sewer laterals, and CCTV inspection and testing of the completed pipe system.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. The following references are part of this Specif ication. In case of conflict between the requirements of this Specification and those of the listed documents, the requirements of this Specification shall prevail. The latest edi tion of the following references shall be used:
ASTM D1248 Polyethylene Plastics Molding and Extrus ion Materials ASTM D2657 Heat Joining of Thermoplastic Pipe and F ittings ASTM D3035 Polyethylene Plastic Pipe (SDR-PR) Based on Controlled Outside Diameter
ASTM D3261 Specification for Butt Heat Fusion Polye thylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing
ASTM D3350 Polyethylene Plastic Pipe and Fittings M aterials ASTM F714 Standard Specification for Polyethylene P lastic Pipe Based on Outside Diameter
1.3 CONTRACTOR SUBMITTALS
A. Shop Drawings.
1. The CONTRACTOR shall submit catalog cuts, specif ications, dimensioned drawings, installation details and sketches, and other pertinent information for the HDPE pipe installation work. All materials provided shall be fully in accordance with the requirements of the reference specifications specified above.
2. The CONTRACTOR shall verify with the pipe manufa cturer all connection details.
3. The CONTRACTOR shall submit detail drawings and a written description of the construction procedure and sequence to bypass sewag e flow, install pipe, and reconnect sewer laterals.
B. Certification. The CONTRACTOR shall furnish a certified affidavit of compliance for all HDPE pipe and fittings furnished confirming that the materials supplied fully conform to
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the requirements specified herein and are compatibl e with the pipebursting equipment and installation method.
C. The CONTRACTOR shall perform trial fusion welds and submit samples to the ENGINEER for review prior to installation of the pipe. Full penetration welds shall provide a homogeneous material across the cross section of the weld. The fusion machine employed for the trial welds shall be the same machine to be utilized for the installation work.
D. Only technicians whom the pipe manufacturer or s upplier has certified and who have a minimum of two (2) years of experience fusion welding 8-inch or larger diameter pipelines shall operate fusion equipment. Submit documentatio n on the technician's experience shall be documented in the HDPE pipe submittal.
E. CONTRACTOR shall submit pre-construction video i nspection tapes and logs to the ENGINEER at least five (5) days before start of pipebursting work on any specific line.
1.4 QUALITY ASSURANCE
A. Quality assurance procedures shall be performed by the pipe manufacturer fully in accordance with the requirements of Section 19, Hig h-Density Polyethylene Pipe. The certification shall include certified laboratory da ta confirming that said tests have been performed on a sample of the pipe to be provided un der this contract, or pipe from that production run, and that satisfactory results were obtained.
B. Fusion joining and other procedures necessary fo r correct assembly of the polyethylene pipe shall be done only by personnel trained in tho se skills to the satisfaction of the ENGINEER and the pipe supplier, in accordance with the requirements of Section 19, High-Density Polyethylene Pipe.
C. Pipe insertion equipment shall be operated only by technicians who have a minimum of three years’ experience in the installation of the pipe material as specified herein. The technician's experience shall be documented in the HDPE pipe submittal.
D. The CONTRACTOR shall televise the installed pipe after existing services have been reconnected and manhole work has been completed. Th e original television inspection videotape shall be provided to the ENGINEER.
1.5 WARRANTY
A. The CONTRACTOR shall provide to the CITY a warra nty to be in force and effect for a period of one (1) year from the date of final acceptance by the CITY. The warranty shall require the CONTRACTOR to repair or replace the pip e should leakage, separation, collapse or other failure result from faulty materi als or installation as determined by the ENGINEER.
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PART 2 - PRODUCTS
2.1 GENERAL
The CONTRACTOR shall provide high-density polyethylene pipe as specified in Section
19. 2.2 JOINTS
High-density polyethylene pipe shall be joined by b utt fusion welding, as specified in Section 19.
2.3 LATERAL SEWER CONNECTIONS
Lateral sewers shall be connected to the main line by installation of an Inserta Wye fitting consisting of a PVC hub, rubber sleeve and stainles s steel band, as manufactured by Inserta Tee.
2.4 LUBRICATION
The pipe bursting equipment shall include a bentoni te or polymer slurry lubrication system in accordance with the pipe bursting equipme nt manufacturer’s recommendations, to reduce friction developed on th e surface of the replacement pipe during insertion. Maintain an envelope of bentonite or polymer slurry as required around the exterior of the pipe during the pipe bursting o peration to reduce the exterior friction and the possibility of the pipe seizing in place.
PART 3 - EXECUTION
3.1 GENERAL
The CONTRACTOR shall protect facilities from damage by forces generated by the pipe bursting equipment. Surface heave shall be limited to one-half inch (1/2”) after allowing one week for settling. If heave occurs in excess of this amount, the CONTRACTOR shall remove the heaved area to a depth below the f inished grade of the existing pavement equal to the thickness of the asphalt sect ion and repave. The costs for this work shall be included in the unit cost for pipe bu rsting. Any surface cracks caused by the pipe bursting work in areas where pavement is n ot required to be replaced shall be crack sealed. Removal areas shall be a minimum of four feet wide.
The CONTRACTOR may elect (at own cost) to sawcut a single cut along the pipeline alignment as a surface heave countermeasure. If the heave is less than one-half inch, the sawcut shall be joint sealed. If contractor cho oses to do a double sawcut on either side of the pipeline, the pavement between the sawcuts shall be removed and replaced at the CONTRACTOR’s own expense.
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3.2 PREPARATION
A. All work shall be performed as specified herein and supervised by personnel experienced in the installation of the pipe.
B. Each line to be replaced by pipebursting shall b e inspected by closed-circuit television inspection prior to the start of work on each line to assure that existing conditions are conducive to pipebursting and to locate active service laterals.
3.3 HANDLING AND STORAGE
A. The CONTRACTOR shall exercise special care durin g the unloading, handling, and storage of all high-density polyethylene pipe to en sure that the pipe is not cut, gouged, scored or otherwise damaged. Any pipe segment that has cuts in the pipe wall exceeding 10 percent of the wall thickness shall be cut out a nd removed from the site at the CONTRACTOR's cost. The pipe shall be stored so that it is not deformed axially or circumferentially which may hinder pipe installation.
B. High-density polyethylene pipe without an ultrav iolet inhibitor shall not be stored uncovered outside.
3.4 BYPASS PUMPING
A. The CONTRACTOR shall provide bypass pumping and/ or diversion when required for acceptable completion of the pipe installation. Byp ass pumping shall consist of furnishing, installing, and maintaining all power, primary and standby pumps, appurtenances and bypass piping required to maintain existing flows and services, and shall be in accordance with the requirements of Section 3, Bypassing Wastewater.
B. Bypass pumping shall be done in such a manner as not to damage private or public property, or create a nuisance or public menace. Th e pumped sewage shall be in an enclosed hose or pipe that is adequately protected from traffic, and shall be redirected into a sanitary sewer system. Dumping or free flow of sewage on private property, gutters, streets, sidewalks, or into storm sewers is prohibited. The CONTRACTOR shall be liable for all cleanup, damages, and resultant f ines in the event of a spill. After the work is completed, flow shall be returned to the re placed sewer and all temporary equipment removed.
C. The CONTRACTOR shall take all necessary precauti ons to ensure that no private properties are subjected to a sewage backup or spill.
D. The CONTRACTOR shall pump out or otherwise posit ively drain all locations, a minimum of once every 24 hours, where the building sewer is disconnected from the main sewer for more than one day. More frequent pumping shall be used in locations where wastewater flows exceed the capacity of temporary s torage provided by the CONTRACTOR.
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3.5 POINT REPAIRS
The CONTRACTOR shall repair the pipe where point repairs are identified on the plans.
If this is not shown, it will constitute extra work when approved by the ENGINEER. The work shall include verifying the location of the point repair, locating all interfering utilities, temporary flow bypassing, traffic control, excavati on, shoring, dewatering, pipe repairs or replacement, backfilling, and surface restoration.
3.6 PIPE INSTALLATION
A. The CONTRACTOR shall install the pipe by utilizi ng a constant tension system with a hydraulic or pneumatic bursting device that breaks apart the existing pipe. The void created by the bursting device shall be sufficient in size to accommodate the HDPE pipe, which shall be installed immediately after the void has been formed.
B. The CONTRACTOR shall utilize existing manholes w here practical, unless indicated otherwise. Manhole inverts and bottoms shall be rem oved to permit access for installation equipment.
C. The CONTRACTOR shall anchor the pipe to concrete structures or manholes after the pipe has been installed along the length of sewer r eplaced. The CONTRACTOR shall use a water stop or flange adaptor, as supplied by the pipe manufacturer, which is firmly seated perpendicular to the pipe axis, around the pipe exterior and cast into the structure base or near the structure wall center. The structu re or manhole connection shall be made a minimum of 12 hours after pipe insertion.
3.7 PIPE TESTING
A. The CONTRACTOR shall successfully pressure test the installed pipe, in accordance with the requirements of Section 12, Sanitary Sewer System Testing.
B. The CONTRACTOR shall mandrel test the installed pipe, in accordance with the requirements of Section 12, Sanitary Sewer System Testing.
3.8 RECONNECTION OF SEWER LATERALS
A. The CONTRACTOR shall excavate, expose, and isola te all sewer lateral connections prior to replacing the existing sewer. The existing connections may be encased in mortar, concrete, or reinforced concrete. There will be no additional compensation for demolition of this concrete.
B. The CONTRACTOR shall successfully test the insta lled pipe prior to reconnecting sewer laterals.
C. All sewer laterals that are determined by the CO NTRACTOR to be active shall be connected by installation of an Inserta Wye fitting in accordance with pipe manufacturer's recommendations. Fitting shall be tested prior to reconnection of active sewer laterals.
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3.9 FINAL CLEANING AND TELEVISION INSPECTION
A. Prior to final acceptance and final inspection o f the pipe by the ENGINEER, the CONTRACTOR shall flush and clean all parts of the system by removing all accumulated construction debris, rocks, gravel, sand, silt, and other foreign material from the pipe.
B. After completion of the pipe installation, servi ce reconnections, finish work at the manholes and final cleaning, the sewer shall be televised in accordance with Section 14.
All inspection video shall be submitted to the City.
END OF SECTION
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SECTION 7 – SHORING
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The WORK specified in this section includes shor ing systems for the support of excavations including, but not limited to, trench a nd structure excavations. The CONTRACTOR shall furnish, install, and remove upon completion of the required construction, all systems of supports, including all bracing and associated items to retain the sides of the excavations. The CONTRACTOR shall select the methods, design, construct, and remove all shoring systems.
1.2 REFERENCE CODES, REGULATIONS, SPECIFICATIONS, A ND STANDARDS A. Reference codes, regulations, specifications, an d standards include, but are not limited to:
1. Commercial Standards :
ASTM A 328 Specification for Steel Sheet Piling
2. Codes :
a. California Labor Code
b. Occupational Safety and Health Administrative Co de
B. The CONTRACTOR’s attention is directed to the pr ovisions for “Shoring and Bracing Drawings” in Section 6705 of the California Labor C ode. The CONTRACTOR, prior to beginning any trench or structure excavation exceed ing 5 feet in depth, shall submit to the ENGINEER and shall be in receipt of the ENGINEE R’s written acceptance of the CONTRACTOR’s detailed plan showing design of all sh oring, bracing, sloping of the sides of excavation, or other provisions for worker s’ protection against the hazard of caving ground during the excavation of such trenche s or structure excavation. Plans shall be prepared and sealed by a civil or structur al engineer registered in the State of California.
1.3 DESIGN CRITERIA
A. General : In all areas, the shoring system, including all t he components, shall be designed by the CONTRACTOR to support earth and roc k pressure, unrelieved hydrostatic pressures, utility loads, equipment, applicable traffic and construction loads, and other surcharge loads in such manner as to allo w the safe and expeditious construction of the permanent structures without movement or settlement of the ground and to prevent damage to or movement of adjacent st ructures and utilities. Shoring systems shall meet the following minimum performanc e requirements and design criteria.
1. Comply with all governing regulations pertaining to excavation safety (e.g., the most current edition of Cal/OSHA construction safety orders, article 6).
2. Be compatible with the surface and subsurface so il and groundwater conditions mapped and encountered and resist lateral earth pre ssures and hydrostatic pressures (where not dewatered).
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3. Protect personnel that enter the excavation.
4. Protect existing utilities, pavements, and struc tures.
5. Installation of the shoring system must occur in a manner and sequence that does not damage existing structures, pavements, and util ities including through settlement, heave or vibrations.
6. Prevent caving (i.e., raveling, running, or flow ing) or lateral movement of excavation walls and associated loss of adjacent gr ound and adjacent ground surface settlement, even when subjected to construction vibrations.
7. Provide stable excavation walls and bottom (e.g. , prevent bottom heave).
8. As permitted by the specifications, allow for re moval or abandonment of shoring in a manner and sequence that (1) is in step with the backfilling sequence (i.e., shoring should not be removed ahead of backfilling) and (2) does not damage the finished pipeline or structures or existing structu res, pavements, and utilities including through settlement, heave or vibrations.
9. Resist lateral earth pressures including those f rom hydrostatic pressures and lateral loads from vehicular traffic, construction equipment and spoils.
10. Special shoring and/or ground improvement, incl uding grout stabilization may be required and designs shall be provided by the CONTRACTOR, where excavations are in close proximity to structures, utilities, or unlined drainage to minimize potential excavation-related damage. Special shoring and/or ground improvement designs shall be required where excavations are:
a. Within an imaginary plane protected downward at an inclination of 2H:1V from the nearest foundation edge or pipeline.
b. Below the depth of flow within adjacent unlined drainageways. c. Experiencing flowing, running and/or raveling gr ound conditions (i.e., soils with little to no stand-up time).
11. The CONTRACTOR shall design each member to supp ort the maximum loads that can occur during construction. For the purpose of t his Section, the design load means the maximum load the support member of the sh oring system will have to carry in actual practice.
12. The submittals shall provide design calculation s for each stage of the excavation, including installation and removal of the shoring system. The CONTRACTOR shall submit all design assumptions and design criteria, as well as references for the design criteria and assumptions used. The strut pre loading procedure, including information on the jacking system and calibration data for the hydraulic jacks, shall also be submitted for review.
13. The CONTRACTOR shall design the bottom of the s upport system to be carried to a depth below the main excavation adequate to pr event excessive lateral and vertical movements and ensure stability of the excavation.
14. Review of the CONTRACTOR’s plans and methods of construction shall not relieve the CONTRACTOR of its responsibility to pro vide an adequate support system to support all load configurations encounter ed to complete the required WORK.
15. The struts shall be preloaded to fifty percent (50%) of the design load. Preloading shall be accomplished by jacking between the struts and wales. Provisions shall be made for permanently fixing each member, after preloading, with steel shims or wedges welded in place. Wood wedges shall not be allowed.
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16. The sequence of excavation, installation, and r emoval of the shoring and preloading of the struts shall be carried out in a manner such that lateral movement and settlement of the soil surrounding the excavations is minimized.
17. The vertical spacing of the struts shall not ex ceed 10 feet.
18. Sheet piles, if used, shall penetrate into unde rlying stiff clays a minimum distance of 5 feet to provide positive cut-off against under seepage. In areas where sand deposits are present below stiff clays, the sheet p iles shall penetrate through the sand sediments to reach into the stiff clays for a minimum distance of 5 feet.
19. Wales shall bear tightly against the sheet pile walls. Where necessary, steel wedges shall be installed or other appropriate mean s used to transfer loads between the wales and the sheet pile walls. The wed ges shall be secured by welding.
B. The CONTRACTOR shall review the existing undergr ound utilities. CONTRACTOR shall make its own interpretation regarding the ground co nditions as described in the project soils boring logs, and shall make any other additional surveys and/or borings necessary to determine the types and extent of sloping, bracing, and shoring system(s) required to accomplish the WORK. All of the foregoing costs sha ll be included in the CONTRACTOR’s total price for performing the WORK.
C. Sloped excavations shall not be permitted, unles s otherwise approved by the ENGINEER.
1.4 CONTRACTOR SUBMITTALS
A. The CONTRACTOR shall provide submittals of excav ation support systems. The submittals shall be prepared and sealed by a civil or structural engineer registered in the State of California. The shoring submittal shall be submitted to the ENGINEER at the same time as the dewatering submittal.
1. The CONTRACTOR, prior to beginning any trench or structure excavation 5 feet deep or over, shall submit to the ENGINEER and shal l be in receipt of the ENGINEER’s written acceptance of the CONTRACTOR’s d etailed plan showing design of all shoring, bracing, sloping of the sides of excavation, or other provisions for worker protection against the hazard of caving ground during the excavation of such trenches or structure excavation. The CONTRACTOR’s attention is directed to the provisions for “Shoring and Bracing Drawings ” in Section 6705 of the California Labor Code. A civil or structural engine er licensed by the State of California shall prepare plans.
2. The CONTRACTOR shall prepare and submit drawings and supporting calculations showing proposed shoring systems. The submittals shall include details, arrangements, and the method of constructi on for the proposed piling system, including levels of struts and shores, as applicable, and permissible depth to which excavation may be carried before supports are installed.
3. The submittal shall show the full excavation dep th load to be carried by various members of the support system and, as required, the preloads. Design calculations shall include design surcharge loads and calculated deflections of shoring and support members.
4. The CONTRACTOR shall submit proposed method of i nstalling shoring, including the sequence of driving, template, and driving equi pment description. The proposed construction sequence, including strut pla cement and strut and shore
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removal, as related to excavation, construction and backfilling operations, shall be shown.
B. All expenses incurred in performing the WORK des cribed in this Section shall be borne by the CONTRACTOR.
1.5 JOB CONDITIONS
A. Provision for Contingencies:
1. The CONTRACTOR shall provide contingency plans o r alternative procedures to be implemented if unfavorable shoring system performance is evidenced.
2. The CONTRACTOR shall keep on hand materials and equipment necessary to implement contingency plan.
B. The CONTRACTOR shall proceed with caution in are as where utilities are within the shoring and excavation prism. Such utilities shall be exposed by hand excavation or other methods acceptable to the CITY.
C. If existing utilities interfere with proposed me thod of support, the CONTRACTOR shall modify the support system at its own expense.
1.6 TOLERANCES
A. Location of the necessary shoring shall be withi n 3 inches, vertically and horizontally, of that shown on the shop drawings.
B. In the areas adjacent to existing facilities, th e excavation shoring system shall deflect vertically and/or horizontally no more than 1 inch from its original position.
PART 2 - PRODUCTS
2.1 PRODUCTS
A. All timber and structural steel used for the sup porting system, whether new or used, shall be sound and free from defects that may impair their strength.
B. Sheet piling shall be of a continuous-interlocki ng type forming a continuous wall. Sheet piling and all accessories shall conform to the requirements of ASTM A 328.
PART 3 - EXECUTION
3.1 INSTALLATION
A. Excavation support shall be installed as indicat ed in the approved submittals.
B. Excavations, including trenching, shall not begi n until the excavation support submittals have been accepted and until the materials necessary for the installation are on site.
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3.2 STEEL SHEET PILING
A. The CONTRACTOR shall drive sheet piling to the d epth indicated in the submittals, with the bulbs preceding the sockets, in a plumb positio n, with each pile interlocked with adjoining piles for its entire length so as to form a continuous diaphragm throughout the length of each run of wall, bearing tightly against original ground.
B. The CONTRACTOR shall exercise care in driving to avoid damage to existing utilities so that interlocking members can be subsequently extra cted without injury to adjacent fills or existing utilities.
C. The method of driving, cutting, and splicing sha ll conform to the CONTRACTOR’s submittals.
D. The CONTRACTOR shall maintain a sufficient quant ity of material on hand for sheeting, shoring, bracing, and other operations to protect t he WORK and for use in case of emergency.
3.3 INTERNAL BRACING SUPPORT SYSTEM
A. The CONTRACTOR shall provide internal bracing su pport system, including lagging and sheeting, sheet piles, wales, struts, and/or shores.
1. All struts with intermediate bracing shall be pr ovided as needed to enable them to carry maximum design load without distortion or buckling.
2. All web stiffeners, plates, or angles shall be p rovided as needed to prevent rotation, crippling, or buckling of connections and points of bearing between structural steel members that allow for eccentricities caused by field fabrication and assembly.
B. The CONTRACTOR shall install and maintain all br acing support members in tight contact with each other and with the surface being supported. Support system monitoring provisions shall be installed as indicated on the favorably reviewed shop drawings.
C. If necessary to control shoring movement, the CO NTRACTOR shall preload bracing members by jacking struts to fifty percent (50%) of the design load. Preload bracing members shall be loaded in accordance with methods, procedures, and sequence as described on the favorably reviewed shop drawings. Excavation work shall be coordinated with the installation or bracing and preloading. Steel shims and steel wedges welded or bolted in place to maintain the preloadin g force shall be used in the bracing after release of the jacking equipment pressure.
1. Procedures that produce uniform loading of braci ng members to avoid eccentricities or overstressing and distortion of m embers of wall system shall be used.
2. Preloading system shall include a method to meas ure the amount of preload induced into bracing members to within five percent (5%).
D. Excavation shall proceed to no more than 2 feet below point of the support about to be placed. The support shall be installed and preloade d immediately after installation and prior to continuing excavation.
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3.4 REMOVAL OF SUPPORTING SYSTEM
The CONTRACTOR shall remove shoring, including shee t piles, wales, struts, lagging, and shores from the excavation unless indicated oth erwise. Removal of the supporting system shall be performed in a manner that avoids d amage of adjacent construction or facilities. All voids created by the removal of the supporting system shall be immediately filled with well-graded cohesionless sand, lean concrete, or sand cement grout. If soldier piles, sheet piles, and caissons cannot be removed without damaging adjacent construction or facilities, each element shall be r emoved to a depth of 5 feet below the ground surface, or to a point 1 foot above the crow n of the pipe, whichever is less; the soldier piles, sheet piles, or caissons shall be left in place below the point of removal.
END OF SECTION
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SECTION 8 – ASPHALTIC CONCRETE PAVING
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall perform all work associated with asphaltic concrete (AC) pavement and base in accordance with the Contract D ocuments, including all labor, materials, equipment, supplies, and facilities associated with providing a finished product satisfying all the requirements of the Contract Documents and the various encroachment permit requirements of agencies having right-of-way jurisdiction, whichever are more stringent.
B. CONTRACTOR shall replace all asphalt concrete pa vement damaged or demolished while performing the Work under this contract to pre-existing conditions.
C. All pavement areas that are not required to be r epaved shall be protected by the CONTRACTOR. Such areas shall not be damaged in anyway and shall be fully restored to the pre-construction condition at the CONTRACTOR ’s expense. Pictures of the existing roadways shall be taken prior to work to d ocument the pre-construction condition.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
C. Commercial Standards :
AASHTO M 82 Cut-Back Asphalt (Medium Curing Type).
AASHTO M 140 Emulsified Asphalt.
AASHTO M 208 Cationic Emulsified Asphalt.
AASHTO M 226 Viscosity Graded Asphalt Cement.
AASHTO T 209 Maximum Specified Gravity of Paving Mi xtures.
ASTM D 242 Specification for Mineral Filler for Bit uminous Paving Mixtures.
ASTM D 692 Specification for Coarse Aggregate for B ituminous Paving Mixtures.
ASTM D 977 Specification for Emulsified Asphalt.
ASTM D 1073 Specification for Fine Aggregate for Bi tuminous Paving Mixtures.
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ASTM D 1188 Test Method for Bulk Specific Gravity a nd Density of Compacted Bituminous Mixtures Using Paraffin-Coated
Specimens.
ASTM D 1557 Test Methods for Moisture-Density Relat ions of Soils and Soil - Aggregate Mixtures Using 10-lb (4.54-kg) Rammer and 18-in (457-mm) Drop.
ASTM D 2397 Specification for Cationic Emulsified A sphalt.
ASTM D 3381 Specification for Viscosity-Graded Asph alt Cement for Use in Pavement Construction.
ASTM D 3515 Specification for Hot-Mixed, Hot-Laid B ituminous Paving Mixtures.
D. State Standard Specifications (2015):
Section 26 Aggregate Bases
Section 37 Bituminous Seals
Section 39 Asphalt Concrete
Section 92 Asphalts
Section 93 Liquid Asphalt for Prime Coat
Section 94 Asphaltic Emulsions
1.3 CONTRACTOR SUBMITTALS
A. Certificate of Compliance of Proposed Materials : Certificate of Compliance with the specifications shall be provided prior to start of the WORK. The Certificate of Compliance shall identify the name of the material, aggregate source, name of the supplier, contract number, and the segment of the WORK where the mater ial represented by the sample is to be used. Results of all tests shall be submit ted to the ENGINEER for approval.
Materials to be tested shall include aggregate base, coarse and fine aggregate for paving mixtures, mineral filler, liquid asphalt, asphaltic binder, and asphalt concrete mixture properties in accordance with State Standard Specif ications and theoretical maximum asphalt concrete density in accordance with AASHTO T 209.
B. Load Slips. The CONTRACTOR shall submit batch da ta and load slips to the Engineer as asphalt is delivered to the project site to allow verification of location and use.
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PART 2 - PRODUCTS
2.1 AGGREGATE BASE
Materials for aggregate base shall be Class 2 Aggre gate Base material, as specified in Section 4, Earthwork.
2.2 PRIME COAT
Material shall be Grade SC-70 liquid asphalt comply ing with the requirements of State Standard Specification Section 93.
2.3 TACK COAT
Tack coat shall be SS-1H, furnished and applied in conformance with the provisions of Section 94, Asphaltic Emulsions, of the State Standard Specifications.
2.4 ASPHALT BINDER
Asphalt binder to be mixed with the mineral aggrega te shall be steam-refined paving asphalt Type PG 64-10 conforming to Section 92 of t he California State Standard Specifications.
2.5 AGGREGATE MIXTURE
Aggregate for asphalt concrete placed in City stree ts shall conform to 1/2-inch Type A HMA specified in Section 39 of the California State Standard Specifications.
Sieve Size Total Percent Passing by Weight
3/4 inch 100
1/2 inch 95-99
3/8 inch 75-95
No. 4 55-66
No. 8 38-49
No. 30 15-27
No. 200 2.0-8.0
2.6 ASPHALT-AGGREGATE MIXTURE
A. Mixture Test Criteria : The asphalt-aggregate mixture shall meet the foll owing test criteria:
Stability (Hveem): 37 min.
Swell (Hveem Method): 0.030 inch max.
Air Voids: 4 percent max.
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Voids in Mineral Aggregate: 14 percent min.
B. Asphalt-Aggregate Mixture Tolerances : The following tolerances for the job-mix formula will be allowed per single test:
Passing Sieve Percent
1/2 inch ±6
3/8 inch ±6
No. 4 ±7
No. 8 ±5
No. 30 ±4
No. 200 ±2
Asphalt Content, Wt. percent by weight of total mixture ±0.45 Results of single extraction and sieve tests shall not be used as the sole basis for acceptance or rejection of the mixture. Any variati on from the job-mix formula greater than the tolerances shown above shall be investigat ed and the conditions causing the variations corrected.
PART 3 - EXECUTION
3.1 GENERAL PAVING AND GRADING
A. Where pavement restoration is required due to ex cavation, the pavement section shall be restored to the as-built section. In no case shall the section be less than that indicated in the Contract Documents.
B. Longitudinal and transverse conforms between exi sting pavement and newly constructed pavement shall be made by cutting the existing pavement to a neat, smooth line at the conform line and constructing a vertical-face butt joint.
C. Adjustment of Iron. Valve boxes, survey monument boxes, manholes, cleanouts, and blowouts shall be brought to finished grade after t he final pavement lift has been installed.
D. If removal of road section for piping or structu res results in more than 50 percent of road area being removed in any 100 foot length, the entire road section shall be removed and replaced in accordance with the Contract Documents.
E. A drop off of more than 0.15-foot will not be al lowed at any time between adjacent to traveled lanes of asphalt concrete surfacing, unless approved by the Engineer.
F. Where trenches are within 3 feet from the curb, lip of the gutter or the edge of the pavement, the CONTRACTOR shall remove and replace t he pavement to the curb, lip of the gutter or the edge of the pavement.
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G. Failed pavement adjacent to the trench shall be removed and replaced by the CONTRACTOR. Any pavement damaged by the CONTRACTOR shall be removed and replaced by the CONTRACTOR.
H. All residents or merchants in each area to be pa ved shall be notified by the CONTRACTOR at least 72 hours in advance of the pavi ng work. Each notice shall indicate the approximate duration that the road will be closed.
3.2 TIMING OF FINAL PAVEMENT
Final pavement shall be installed within fourteen ( 14) days of successful testing as described in Section 12, Sanitary Sewer System Testing, of each sewer reach.
3.3 SUBGRADE PREPARATION
The subgrade shall be prepared as specified in Section 4, Earthwork. The surface of the subgrade after compaction shall be hard, uniform, s mooth, self-draining, and true to grade and cross-section. Subgrade for pavement shall not vary more than 0.02 foot from the specified grade and cross-section. Subgrade for base material shall not vary more than 0.04 foot from the specified grade and cross-section.
3.4 PREPARATION OF EXISTING AC PAVEMENT
The edge of existing AC pavement shall be sawcut to provide a smooth joint for new pavement. The CONTRACTOR may saw cut or mechanically grind the pavement before excavating to facilitate removal of pavement. After backfill and compaction, the CONTRACTOR shall saw cut and remove a minimum of 12 inches AC beyond any irregular or damaged pavement on each side of the t rench before installation of the trench pavement patch.
The CONTRACTOR shall clean all pavement surfaces by sweeping or other dry cleanup means to remove all loose particles of paving, all dirt, and all other extraneous material immediately before applying the prime coat.
3.5 AGGREGATE BASE
Aggregate base shall be provided where required and to the thickness indicated.
Imported aggregate bases shall be delivered to the job site as uniform mixtures, and each layer shall be spread in one operation. Segregation shall be avoided, and the base shall be free of pockets of coarse or fine material . Where the required thickness is 6 inches or less, the base materials may be spread an d compacted in one layer. Where the required thickness is more than 6 inches, the b ase material shall be spread and compacted in two or more layers of approximately eq ual thickness, and the maximum compacted thickness of any one layer shall not exceed 6 inches. The relative compaction of each layer of aggregate base shall be not less t han 95 percent of maximum density when measured in accordance with ASTM D 1557. The c ompacted surface of the finished aggregate shall be hard, uniform, smooth, and at any point shall not vary more than 0.02 foot from the specified grade or cross-section. In no case shall the aggregate base allow ponding or standing water.
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3.6 TACK COAT
A. A tack coat shall be applied to existing paved s urfaces where new asphalt concrete is to be placed on or against existing pavement. It shall also be applied to the contact surfaces of all cold pavement joints, curbs, gutters, manholes, and the like immediately before the adjoining asphalt pavement is placed. Care shall be taken to prevent the application of tack coat material to surfaces that will not be in contact with the new asphalt concrete pavement. Diluted emulsified asphalt shall be appli ed at the rate of 0.10 to
0.20 gallon/square yard. Undiluted emulsified aspha lt shall be applied at the rate of
0.05 to 0.15 gallon/square yard.
B. No traffic shall be allowed on the tack coat wit h the exception of vehicles unloading asphalt concrete. All vehicles involved with the CO NTRACTOR's operations shall turn around within the roadway right-of-way. Driveways a nd other private property shall not be used without prior written consent of the involved owner, a dated copy of which must be delivered to the Engineer prior to the use thereof.
3.7 ASPHALT CONCRETE
A. The CONTRACTOR shall install all concrete, steel , piping, backfill, and bedding before placing asphalt concrete.
B. Asphalt concrete shall not be placed on any surf ace that contains ponded water or excessive moisture in the opinion of the Engineer.
C. At the time of compaction, the temperature of mi xture shall not be lower than 250 degrees Fahrenheit or higher than 320 degrees Fahre nheit, the lower limit to be approached in warm weather and the higher in cold weather.
D. Asphalt concrete shall not be placed when the at mospheric temperature is below 50 degrees Fahrenheit or during unsuitable weather, including rain or fog. Should unsuitable weather conditions develop during paving operations and force a shut down, loaded trucks in transit shall return to the plant and no additional compensation will be allowed.
E. Asphalt concrete shall be placed in lifts no thi cker than 2½-inches and no thinner than 1½-inches.
F. The asphalt concrete shall be evenly spread upon the subgrade or base to such a depth that, after rolling, it will be of the specified cr oss-section and grade of the coarse being constructed. All spreading and compacting shall be in conformance with Section 39 of the California State Standard Specifications. Loade rs (pick-up machines) shall not be used.
G. The depositing, distributing, and spreading of t he asphalt concrete shall be accomplished in a single, continuous operation by means of a self-propelled mechanical spreading and finishing machine designed specifically for that purpose. The machine shall be equipped with a screed or strike-off assembly capable of being accurately regulated and adjusted to distribute a layer of the material to a definite predetermined thickness. When paving is of a size or in a location that use of a self-pr opelled machine is impractical, the ENGINEER may waive the self-propelled requirement.
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H. Spreading, once commenced, shall continue withou t interruption.
I. The mix shall be compacted immediately after pla cing. Initial rolling with a steel-wheeled, tandem roller; steel-three-wheeled roller; vibratory roller; or a pneumatic-tired roller shall follow the paver as closely as possible. If needed, intermediate rolling with a pneumatic- tired roller shall be done immediately behind the initial rolling. Final rolling shall eliminate marks from previous rolling. In areas too small for the roller, a vibrating plate compactor or a hand tamper shall be used to achieve thorough compaction.
J. The relative density after compaction shall be 9 5 percent of the density obtained by using ASTM D1188 or D2726. A properly calibrated nuclear asphalt testing device shall be used for determining the field density of compacted asphalt concrete, or slabs or cores may be laboratory tested in accordance with ASTM D1 188. A minimum of one compaction test per day shall be provided and an ad ditional compaction test for each 500 square feet completed. If the test results for any lot of asphalt concrete indicate that the relative compaction is less than 95.0%, the asphalt concrete represented by that lot shall be removed and replaced at CONTRACTOR's expen se. Asphalt concrete spreading operations shall not continue until the C ontractor makes significant adjustments to the materials, procedures or both in order to meet the required compaction. The adjustments shall be as agreed to by the Engineer.
K. Upon completion, the pavement shall be true to g rade and cross-section. When a 10 foot straightedge is laid on the finished surface parall el to the center of the roadway, the surface shall not vary from the edge of the straigh tedge more than 1/8 inch, except at intersections or changes of grade. In the transverse direction, the surface shall not vary from the edge of the straightedge more than 1/4 inch.
L. Upon completion, slope of street draining to the gutter shall match existing.
3.8 PROTECTION OF STRUCTURES
Provide whatever protective coverings may be necessary to protect the exposed portions of buildings, curbs, posts, guard fences, equipment pads, and any other structures from splashing oil and asphalt from the paving undesirable matter that may come upon these structures by reason of the paving operations.
3.9 CONTRACTOR'S RESPONSIBILITY
Settlement of replaced pavement over trenches withi n the warranty period shall be considered the result of improper or inadequate com paction of the subbase or base materials. The CONTRACTOR shall promptly repair all pavement deficiencies noted during the warranty period at the CONTRACTOR's sole expense.
3.10 TEMPORARY PAVING
A. The same day the trench is backfilled, it will b e graded to conform to the existing surface and temporary pavement consisting of a minimum of 2 inches of premixed asphaltic paving material will be placed over the trench. Temporary pavement shall be maintained in a safe and drivable condition until permanent paving is placed.
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B. Temporary pavement shall be removed and permanen t pavement shall be installed within the time period designated in Part 3.2 above unless otherwise specified by the CITY. The permanent pavement shall be maintained to the satisfaction of the ENGINEER for the full guarantee period.
END OF SECTION
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SECTION 9 – CURBS, GUTTERS, SIDEWALKS, CURB RAMPS, VALLEY GUTTERS, AND
DRIVEWAYS
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish all labor, materials, and equipment necessary to construct the curbs, gutters, sidewalks, curb ramps , valley gutters, and driveways, in accordance with the Contract Documents.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
Without limiting the generality of other requiremen ts of the Contract Documents, all WORK specified herein shall conform to or exceed the requirements of the Building Code for San Mateo County and/or the City of San Carlos.
1.3 CONTRACTOR SUBMITTALS
A. Submit manufacturers’ literature for all machine s specifically designed for such work (i.e., machines to construct asphaltic concrete curbs).
B. Submittals for asphaltic concrete shall be in ac cordance with Section 8, Asphaltic Concrete Paving.
C. Material submittals for concrete shall be in acc ordance with the requirements of Section 16, Cast-in-Place Concrete.
1.4 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
C. Concrete surface improvements shall conform to S ection 73, “Concrete Curbs and Sidewalks”, of the State Standard Specifications.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Concrete shall conform to the requirements of Ci ty Standard Detail 7, Concrete General Notes.
B. All concrete curb and gutter, sidewalk, driveway and driveway apron, and wheelchair ramp that interfere with the proposed construction shall be removed to an existing joint or joint sawed with a vertical face. Replacement o f concrete curb and gutter, sidewalk, driveway and driveway apron, and wheelchair ramp shall match existing.
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C. Portland cement concrete is designated by class based on 28-day compressive strengths (when tested in accordance with ASTM C 39) as specified herein:
Class A Concrete shall contain approximately 564 p ounds of portland cement per cubic yard and have a 28-day compressive strength of not less than 3000 psi.
Class D Concrete shall contain not less than 658 p ounds of portland cement per cubic yard and have a 28-day compressive strength of not less than 3500 psi.
Class Intended Use
A General Construction -structures, curbs, gutters , sidewalks, , minor structures, thrust and anchor blocks.
D Concrete driveways, driveway conforms, driveway c urb and gutters, emergency pavement, underwater placement, and seals.
If the class of concrete is not specified on the pl ans or in these specifications, or otherwise directed by the Engineer, it shall be Class A.
D. Asphaltic concrete is specified in Section 8, As phaltic Concrete Paving.
PART 3 - EXECUTION
3.1 GENERAL
Curbs, gutters, sidewalks, curb ramps, valley gutters, and driveways shall be constructed by the conventional use of forms unless the ENGINEE R has favorably reviewed the CONTRACTOR’s submittal proposing the use of a curb and gutter machine. Curb and gutter machines shall be specifically designed for such work, and the resulting products shall be equal to or better than would typically be obtained using forms. If the results are not satisfactory, then use of machines shall be discontinued.
3.2 SURFACE PREPARATION
Where any curb, gutter, sidewalk, curb ramp, valley gutter, or driveway has been removed, destroyed, or displaced, the same shall be replaced to the nearest score line or construction joint to the same dimensions and fi nish as the original construction that was removed. Features to be demolished shall be saw cut at the limiting construction joints and all curbs, gutters, sidewalks, curb ramps, valley gutters, or driveways shall be removed and disposed of by the CONTRACTOR.
The subgrade shall be constructed and compacted tru e to line and grade, as required.
All soft or unsuitable material shall be removed to a depth of not less than 6 inches below subgrade elevation and replaced with satisfactory material.
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3.3 FORMS
Forms conforming to the dimensions of the curb, gut ter, sidewalk, curb ramp, valley gutter, or driveway shall be carefully set to line and grade and shall be securely staked in place. The forms and subgrade shall be watered i mmediately in advance of placing concrete. Forms shall be thoroughly cleaned each time they are used and shall be coated with light oil or another releasing agent of a type that will not discolor the concrete.
3.4 PLACEMENT
A. Concrete shall be thoroughly spaded away from th e forms to eliminate rock pockets next to the forms. The concrete may be compacted by mechanical vibrators acceptable to the ENGINEER. Tamping or vibrating shall continue until the mortar flushes to the surface and the coarse aggregate is below the concrete surface.
B. Expansion joints shall be located to match the e xpansion joints in the removed curb, gutter, sidewalk, curb ramp, valley gutter, or driveway, unless otherwise indicated in the Contract Documents. Expansion joints shall be const ructed vertical and at right angles to the centerline of the street. Joints shall be constructed at all radius points, driveways, alley entrances, and at adjoining structures.
C. Contraction joints shall be constructed not more than 10 feet apart. Joints shall be made by the use of steel dividers, scoring or saw cutting to a depth of not less than 1-1/2 inches and matching joints in adjacent sidewalks and/or driveways.
3.5 FINISH
Exposed surfaces of sidewalk, driveway, curb and gutter shall be teel troweled followed by a medium broom finish. The front-face form shall not be removed before the concrete has taken the initial set and has sufficient strength to carry its own weight. Gutter forms and rear forms shall not be removed until the concr ete has hardened sufficiently to prevent damage to the edges. Any portion of the curb, gutter, sidewalk, or driveway that is damaged shall be repaired or replaced at no additional cost to the CITY.
3.6 TESTING AND TOLERANCES
All surfaces shall be tested by laying a 10 foot long straightedge along the surface. Any deviation from the lines and grades indicated in th e Contract Documents of more than 1/4 inch in the 10 foot length shall be cause for r ejection. Similarly, any section of the WORK that is deficient in depth shall be removed and replaced.
When required by the ENGINEER, gutters having a slo pe of 0.8 foot per 100 feet, or less, or gutters having unusual or special conditions that cast doubt on the capability of the gutter to drain, shall be water tested for proper drainage. Water testing shall consist of establishing flow in the length of gutter to be tested by supplying water from a hydrant, tank truck, or other source. One (1) hour after the water source is removed the gutter shall be visually inspected for evidence of ponding or improper shape. In the event water is found ponded in the gutter to a depth of 1/8 inch or greater, or on the adjacent asphalt
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pavement, all defects shall be corrected in a manne r acceptable to the ENGINEER, at no additional cost to the CITY.
END OF SECTION
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SECTION 10 – TRAFFIC STRIPES AND PAVEMENT MARKINGS
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall furnish all tools, material s, labor, and equipment required to furnish, install and restore, complete and in place , thermoplastic traffic stripes and pavement markings damaged during construction, all in accordance with the requirements of the Contract Documents.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes: All WORK shall comply with all codes, as referenced herein.
B. Work shall be in conformance with Sections 84 an d 85 of the State Standard Specifications.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Thermoplastic materials shall conform to the pro visions in Sections 84-1, “General,” and 84-2.02, “Thermoplastic Traffic Stripes and Pavemen t Markings Materials” of the State Standard Specifications and these special provisions.
B. The thermoplastic material shall be PTH-02SPRAY.
C. Glass beads to be applied to the surface of the molten thermoplastic material shall conform to the requirements of State Specification 8010-004, or AASHTO Designation:
M 247 (Type 1). Copies of State Specifications are available at the State of California Transportation Laboratory, Sacramento, California.
D. At the option of the Contractor, STAMARK Brand P avement Tape, Pliant Polymer Grade, manufactured by 3M Company; or Cata-Tile Elastoplas tic Roadmarking Tile, manufactured by the Cataphote Division of the Ferro Corporation may be placed instead of the thermoplastic material specified herein. Pa vement tape or roadmarking tile, if used, shall be installed in accordance with the man ufacturer’s specifications. If pavement tape or road marking tile is placed instea d of thermoplastic materials, the pavement tape or road marking tile will be measured and paid for as thermoplastic pavement marking.
E. Delineators (Fire Hydrant) – Two-way reflective blue Stimsonite No. 88, or approved equal.
F. Pavement Markers – Type A, D, G, and AY reflecti ve pavement markers conforming to Section 85 of the State Specifications.
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G. Epoxy – Rapid set epoxy adhesive conforming to S ection 95 of the State Specifications.
PART 3 - EXECUTION
3.1 GENERAL
A. Application shall be in accordance with Section 84 of the State Specifications.
Thermoplastic and paint shall be placed as close as possible to utility structures without covering them.
B. All work necessary to establish satisfactory lin es for markings shall be performed by the Contractor.
C. Installation of striping and markings shall be c ompleted no sooner than 2 days and no later than 10 days after completion of pavement construction.
END OF SECTION
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SECTION 11 – SANITARY SEWER LATERALS
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall furnish all pipe, fittings, tools, materials, and labor required to install and test, complete and in place, the sanitary sewer laterals, all in accordance with the requirements of the Contract Documents.
B. The Contractor shall be responsible to locate al l laterals and CCTV video inspect all active lower laterals (easement laterals do not req uire CCTV video inspection prior to replacement).
C. The City assumes no responsibility for the accur acy of the sewer maps provided or the inadvertent omission of information. Not all existing sewer laterals are guaranteed to be located and the Contractor may, therefore, encounte r sanitary sewer laterals not specified on the Contract Drawings. The Contractor shall have the sole responsibility for locating all existing live laterals within the project limits.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes: All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
1. City Standard Detail No. 13, “Standard Connectio n to Manhole Walls”
2. City Standard Detail No. 16, “Standard Sewer Lat eral”
3. City Standard Detail No. 17, “Standard Sewer Lat eral Cleanout”
1.3 CONTRACTOR SUBMITTALS
A. The CONTRACTOR shall submit drawings to the ENGI NEER clearly indicating which laterals have been identified as active and which h ave been identified as inactive, and showing the field-verified location of each lateral.
B. The CONTRACTOR shall provide manufacturer’s info rmation describing the pipe material, manufactured wyes and fittings, cleanouts, utility boxes and lids, and any pipe connectors proposed.
C. The CONTRACTOR shall furnish certificates to the ENGINEER certifying that all pipe and fittings furnished hereunder are in compliance with the requirements of the Contract Documents.
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PART 2 - PRODUCTS
2.1 GENERAL
A. Laterals to be reconnected or replaced shall be of the same size as the existing lateral, unless otherwise approved in writing by the ENGINEE R. Referenced pipe sizes are nominal pipe diameters. Typically, single-family dwellings have 4-inch diameter laterals.
All other dwellings have 5-inch or 6-inch diameter laterals.
B. Laterals shall be reconnected to the sewer main or manhole in approximately the same location.
C. All materials delivered to the job site shall be new, free from defects, and marked to identify manufacturer, material, class, and other appropriate information.
D. Acceptance of materials will be subject to stren gth and quality testing, in addition to inspection of the completed product. Acceptance of the installed piping system will be based on inspection and leakage tests.
2.2 PIPING MATERIALS
A. Connection of the sanitary sewer laterals to sew er pipelines installed using open-cut construction techniques shall be made at pre-manufa ctured wyes only. The wye shall be positioned such that the lateral connects near the crown of the sewer pipeline.
B. For sewer pipelines installed using trenchless t echniques (pipe bursting), the lateral shall be connected to the sewer using an Inserta Wye, a t hree piece service connection consisting of a PVC hub, rubber sleeve, and stainless steel band compression fit into the cored wall of the sewer main. The core shall be positioned such that the lateral connects near the crown of the sewer pipeline.
C. Pipe used for laterals and risers shall be eithe r polyvinyl chloride in accordance with Section 18, Polyvinyl-Chloride Pipe, or high-densit y polyethylene pipe, in accordance with Section 19, High-Density Polyethylene Pipe.
D. Banded rubber couplings for use in joining of ne w pipe to existing laterals shall be compression type couplings with external, adjustabl e Type 316 stainless steel shear rings, such as “Band Seal”®, manufactured by Mission Clay Products , Corp.; “Ceramicweld,” as manufactured by Joints, Inc.; or approved equal. Use of couplings without external shear support, or of couplings with shear rings in direct contact with the pipe at joints (internal of the rubber collar), wil l not be permitted except when joining dissimilar pipe materials.
PART 3 - EXECUTION
3.1 GENERAL
A. The CONTRACTOR shall reconnect all active latera ls from the new main to a point a minimum of three (3) feet from the main, unless dir ected by the ENGINEER to replace
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the entire lower lateral. All connections to existing laterals shall be made at sound joints and sections of pipe.
B. Sanitary sewer laterals may be installed using o pen cut or pipebursting construction methods.
1. Excavation and trench backfilling shall be in ac cordance with the requirements of Section 4, Earthwork. At the CONTRACTOR’s option, a nd at no additional expense to the CITY, the CONTRACTOR may backfill the trench around the two- way cleanout with controlled low-strength material (CLSM), as specified in Section 5, Controlled Low-Strength Material; if CLSM is use d to backfill the area around the cleanout, the CLSM shall extend to a level 12 i nches above the crown of the lateral, but no less than three inches below the bottom of the utility box or extension (if applicable).
2. Pipebursting shall be in accordance with Section 6, Pipebursting.
C. The CONTRACTOR shall bypass wastewater from the lateral in accordance with the requirements of Section 4, Bypassing Wastewater or shall arrange with the property owner to temporarily shut down lateral service in o rder to connect the new and existing laterals. The CONTRACTOR shall exercise great care to ensure that no wastewater is allowed to spill from the lateral.
3.2 PIPE INSTALLATION
A. Connect the appropriately-sized lateral to the n ew main sewer near the crown of the pipe. Connection method and material shall be as in dicated in Part 2.2 above and the Contract Drawings.
B. Lateral pipelines shall be laid with the bell po rtion of the pipe in an upstream orientation.
Only manufactured fittings shall be used to adjust grade, where required. The minimum slope for 4 inch laterals shall be 2 percent (1/4 i nch per foot). For 6 inch sewers, the minimum slope shall be 1.1 percent. The maximum slo pe for any lateral shall be 150 percent.
C. Connect the new lateral to the existing lateral using a dual shear band rubber coupling with stainless steel shield and clamp bands.
3.3 LANDSCAPE RESTORATION
The CONTRACTOR shall restore the area affected by its operations in accordance with the requirements of Section 4, Earthwork.
3.4 TESTING
The laterals shall be tested as a part of the main sewer system in accordance with the requirements of Section 12, Sanitary Sewer System Testing. The CONTRACTOR shall install an inflatable plug through each cleanout or other appropriate location to isolate the new system from the existing system.
END OF SECTION
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SECTION 12 – PRECAST CONCRETE MANHOLES
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish and install all prefab ricated manholes, complete with grade rings, frame, cover, pipe connections, prefor med joint sealant, and any other necessary appurtenances, in accordance with the req uirements of the Contract Documents.
Prefabricated manholes shall be installed on top of cast-in-place bases. Refer to Section 16, Cast-in-Place Concrete, for cast-in-place base requirements.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
1. City Standard Detail No. 11, “Standard Manhole”
2. City Standard Detail No. 13, “Standard Connectio n to Manhole Walls”
3. City Standard Detail No. 14, “Standard Manhole C over and Frame” C. Commercial Standards:
ACI 318 Building Code Requirements for Reinforced C oncrete ASTM A 48 Specification for Gray Iron Castings
ASTM C 150 Specification for Portland Cement
ASTM C 478 Specification for Precast Reinforced Con crete Manhole Sections
1.3 CONTRACTOR SUBMITTALS
Shop Drawings : The CONTRACTOR shall furnish complete shop drawin gs for all precast manhole sections, cast-iron frames and cove rs, and appurtenances for review by the ENGINEER.
1.4 QUALITY ASSURANCE
Inspection : After installation, the CONTRACTOR shall demonstr ate that all manholes have been properly installed, level, with tight joi nts, at the correct elevations and orientations, and that the backfilling has been carried out in accordance with the Contract
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Documents. All manholes shall be tested in accordance with Section 12, Sanitary Sewer System Testing.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Manholes : Manholes shall be constructed of precast concrete manhole rings and shall conform to ASTM C 478. Precast concrete rings shall be manufactured by a process that will produce a dense, homogeneous concrete ring of first quality. The rings shall be steel reinforced and have a minimum wall thickness of 4 i nches. Cement used in manufacturing the rings shall be Type V, Portland cement, as specified in ASTM C 150.
Manhole sections, cones, and grade rings shall be j oined using preformed joint sealant only. Use of mortar will not be allowed. All manhol es shall have concrete bases and formed channels with inverts to match the adjoining pipes.
1. Manhole Manufacturers, or Approved Equal:
a. Associated Concrete Products, Livermore, Califor nia b. Hanson Concrete Products, Inc., Milpitas, Califo rnia c. Oldcastle Precast, Sacramento, California
B. Castings : Castings for manhole frames and covers shall be n on-rocking and shall conform to the requirements of ASTM A 48, Class 30. Cast-iron covers and frames shall be heavy-traffic type with a minimum weight and diameter as required. Frame and cover shall be designed for minimum load as indicated in the Contract Drawings. All sanitary sewer covers shall be marked “SEWER”. Each item in a set of frames and covers shall be supplied by the same manufacturer. The manhole c overs shall have a curved pick hole and side pry hole.
C. Concrete Sealant : Concrete sealant and waterproofing compound shall be applied to the outside of the manhole barrel prior to backfill. Sealant material shall be submitted to the ENGINEER for approval.
2.2 DESIGN LOADS
A. Vertical Loads: Design all precast manhole rings and accessories to support an AASHTO HS-20 truck loading, in addition to soil weight above sloping ring sections and the dead load of all material supported above.
B. Lateral Loads: Lateral loads shall be as dictate d by the following formula or the geotechnical report requirements, whichever are more stringent.
Operating: 95 x H (psf) triangular equivalent fluid pressure for dead load plus a live load surcharge from an H-20 truck, including impact.
Seismic: 23 x H
2 (psf) uniform pressure distribution.
Where H = depth below finished grade.
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PART 3 - EXECUTION
3.1 WORKMANSHIP
A. Precast Concrete Manhole Sections : Precast concrete manhole sections shall be set so as to be vertical, with sections in true alignment. The joint of the previously set section shall be covered with sealing compound primer and joint sealant before the next section is placed.
B. Connections : Connections to manufactured, precast items shall be made by casting sections of pipe into the items, using non-shrink grout, and/or using an approved resilient connector.
C. All precast concrete manholes shall be installed in strict conformance with the manufacturer’s written instructions, on a well-comp acted foundation, as specified in Section 4, Earthwork. After installation of concrete manholes, the CONTRACTOR shall apply concrete waterproofing sealant to the outside of manhole barrels. The CONTRACTOR shall allow sufficient time for sealant to cure, prior to backfill, in accordance with the manufacturer’s written instructions.
D. Existing and new manhole frames and covers shall not be set to final grade until the pavement has been completed, unless otherwise approved by the ENGINEER. Concrete manhole collars shall be installed as indicated. Pa ving around the manhole shall be in accordance with Section 8, Asphaltic Concrete Pavin g. Openings in manholes shall be protected from construction loads, debris, and unauthorized entry.
E. Connection to existing manholes: When a new sewer main is connected to an existing manhole, the manhole shall be modified to accept th e new size of pipe and grouted to form a new flow channel in the manhole base. The wall of the manhole shall be breached by core drilling, sawing, or other approved method that does not disturb the manhole.
The Contractor shall seal the penetration with StopAQ™ or SealGuard II, or an approved equivalent water stop, and shall grout the sealed p enetration with a rapid set, high strength, non-shrink cementitious mortar to protect the sealer. The Contractor shall backfill the exterior of the manhole around the pipe penetration with concrete to stabilize the connection. When any other modifications are required to a new or existing manhole, the Contractor shall use a bonding agent such as Sakrete Concrete Bonder and Fortifier, or an approved equivalent, to adhere modification material to the existing structure.
F. Testing : All manholes shall be tested in accordance with S ection 12, Sanitary Sewer System Testing.
END OF SECTION
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SECTION 13 – SANITARY SEWER SYSTEM TESTING
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall perform all pipeline flushi ng and testing, complete, for sanitary sewerage system piping in accordance with the Contract Documents.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. Commercial Standards:
ANSI/ASTM C 828 Practice for Low-Pressure Air Test of Vitrified Clay Pipe Lines 100 to 300 mm (4 to 12-inch)
ASTM F1417 Practice for Installation Acceptance of Plastic Non-pressure Sewer Lines Using Low-Pressure Air
1.3 CONTRACTOR SUBMITTALS
A. A testing schedule shall be submitted in writing for approval a minimum of seventy-two (72) hours before testing is to start.
B. CONTRACTOR shall identify the equipment to be us ed for testing pipelines and manholes and describe all procedures.
C. CONTRACTOR shall submit all testing results, ind icating whether the results represent a successful or unsuccessful test, within twenty-four (24) hours of each test.
PART 2 - PRODUCTS
2.1 MATERIALS REQUIREMENTS
Temporary valves, bulkheads, plugs, and other press ure-testing equipment materials shall be provided by the CONTRACTOR subject to the ENGINEER's review. No materials shall be used which would be injurious to the public, personnel, adjacent improvements, nor the pipeline structure and future function. Air test gauges shall be laboratory-calibrated test gauges and shall be reca librated by a certified laboratory, at the CONTRACTOR's expense, prior to the leakage test.
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PART 3 - EXECUTION
3.1 GENERAL
A. All pipelines shall be cleaned by balling, flush ing, and/or other approved methods prior to testing. Debris shall be removed from the downstream manhole until all pipelines are clean.
B. All testing operations shall be performed in the presence of the City.
3.2 TESTING OF PIPING
A. General : All gravity sewer pipes and service laterals shall be tested for exfiltration and/or infiltration and deflection, as specified. All manh oles shall be tested for leakage, as specified. Manholes shall be tested prior to backfill placement, whereas all pipe shall be backfilled prior to testing. All leakage tests shal l be completed and approved prior to placing of permanent resurfacing. When leakage or i nfiltration exceeds the amount allowed by the Contract Documents, the CONTRACTOR at its expense, shall locate the leaks, submit a repair procedure(s) for the City’s review, and make the necessary repairs or replacements in accordance with the Contract Doc uments to reduce the leakage or infiltration to the specified limits. Any individua lly detectable leaks shall be repaired, regardless of the results of the tests. Pipe joint leakage repair solely with cement grout will not be permitted. Pipe shall be repaired at Co ntractor’s expense and retested until requirements are met.
B. Leakage Tests : Sanitary sewer systems shall be subjected to an air pressure test. The CONTRACTOR shall furnish all materials, equipment a nd labor for making an air test.
Air test equipment shall be approved by the City.
Each section of sewer main and service lateral shal l be tested between successive manholes by plugging and bracing all openings in th e sewer lines. Air shall be slowly added until the internal pressure is raised to 4.0 pounds per square inch gage (psig).
The compressor used to add air to the pipe shall ha ve a blowoff valve set at 5 psig to ensure that at no time the internal pressure in the pipe exceeds 5 psig. The internal pressure of 4 psig shall be maintained for at least two minutes to allow the air temperature to stabilize, after which the air suppl y shall be disconnected and the pressure allowed to decrease to 3.5 psig.
The time in minutes that is required for the internal air pressure to drop from 3.5 psig to
2.5 psig shall be measured. The results shall not be less than the minimum permissible duration for air test pressure drop shown in the following table:
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ACCEPTANCE TESTING FOR SANITARY SEWERS
LOW PRESSURE AIR TEST
TIME ALLOWED FOR PRESSURE LOSS FROM 3.5 PSIG TO 2.5 PSIG
C. Deflection Test : All flexible and semi-rigid pipe shall be tested for deflection, joint displacement, or other obstruction by passing a rigid mandrel through the pipe by hand, not less than 30 days after completion of the trenc h backfill, but prior to permanent resurfacing. The mandrel shall be a full circle, so lid cylinder, or a rigid, non-adjustable, odd-numbered leg (9 leg minimum), steel cylinder, approved by the City as to design and manufacture. The circular cross-section of the mandrel shall have a diameter of at least 95 percent of the specified average inside pipe dia meter of the pipe, and the minimum length of the circular portion of the mandrel shall be equal to the nominal diameter of the pipe. Obstructions and excessive deflection encount ered by the mandrel shall be corrected by the CONTRACTOR at no additional expense to the CITY.
D. Television Inspection : After cleaning the sewers, the CONTRACTOR shall perform a television inspection of the sanitary sewer mains u pon substantial completion of the WORK. Defects discovered by the video inspection sh all be corrected and reinspected at the CONTRACTOR's cost. The pipeline shall then b e inspected a second time to confirm satisfactory correction of all defects prev iously identified. The second and any subsequent inspections, if necessary, shall be perf ormed by a contractor approved by the CITY and at the CONTRACTOR’s cost.
3.3 TESTING OF MANHOLES
A. All sewer manholes shall be vacuum tested for le akage in accordance with ASTM C1244 after installation, but prior to being backfilled. Prior to vacuum testing, all manhole risers shall be visually inspected for leaks. All leaks or cracks shall be repaired by the CONTRACTOR, prior to testing, to the satisfaction of the City.
B. Plug influent and effluent lines, including serv ice lines, with suitably sized pneumatic or mechanical plugs. Ensure plugs are properly rated for pressures required for test. Follow manufacturer’s safety and installation recommendati ons. Place plugs minimum of 6 inches outside of structure walls. Brace inverts to prevent lines from being dislodged when lines entering structure have not been backfilled.
C. Vacuum testing:
1. Install vacuum tester head assembly at top acces s point of structure and adjust for proper seal on straight top section of structure. F ollowing manufacturer's
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instructions and safety precautions, inflate sealin g element to recommended maximum inflation pressure; do not over-inflate.
2. Evacuate structure with vacuum pump to 10 inches mercury (Hg), disconnect pump, and monitor vacuum for time period specified in the following table:
MINIMUM VACUUM TESTING TIMES FOR SANITARY MANHOLES
MANHOLE
DEPTH IN
FEET
TIME IN SECONDS BY
MANHOLE DIAMETER
48” 60” 72”
4 10 13 16
8 20 26 32
12 30 39 48
16 40 52 64
20 50 65 80
24 60 78 96
3. If drop in vacuum exceeds 1 inch Hg over specifi ed time period tabulated in above table, locate leaks, complete repairs necessary to seal structure and repeat test procedure until satisfactory results are obtained.
END OF SECTION
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SECTION 14 – SEWER CLEANING
PART 1 - GENERAL
1.1 DESCRIPTION
A. SCOPE
This section specifies the requirements for cleanin g of sewer pipes prior to CCTV and after rehabilitation. The pipe is very fragile and in poor condition. The Contractor shall take extra care for cleaning and CCTV inspection.
B. REQUIREMENTS
The Contractor shall clean the sewers specified for CCTV inspection and replacement.
All materials dislodged during cleaning shall be re moved from the sewer and disposed of by the Contractor. Sewer cleaning methods shall include water jetting and foam pigging.
CCTV inspection is not required during cleaning ope rations. However, the Contractor shall at Contractor’s expense, inspect the sewer to view current line conditions prior to rehabilitation.
1.2 MAJOR BLOCKAGE
A. A major blockage shall be defined as an obstruct ion within the sewer which cannot be removed by cleaning with commercially available hyd raulic or mechanical cleaning equipment.
1.3 SUBMITTALS
A. Submit written description of cleaning procedure and all equipment to be used.
PART 2 - PRODUCTS
2.1 EQUIPMENT
A. GENERAL
All equipment specified in this section shall be in good working condition and manufactured or fabricated to withstand the severit y of the work covered under this section.
B. HYDRAULIC AND MECHANICAL CLEANING
All hydraulic cleaning equipment shall be truck mou nted. Water jet cleaning equipment shall include a water tank, auxiliary engine, pumps , and hydraulically driven hose reel.
The Contractor shall provide a minimum of 600 feet of high-pressure hose and a
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selection of high velocity nozzles, each having a c apacity of 50 gallons per minute at working pressures of 1,000 to maximum 1,500 pounds per square inch. Pressure to the nozzle shall be regulated by a relief valve adjusta ble from 1 to 1,500 psi. Nozzles shall be capable of producing a jet stream angle of 15 to 45 degrees from the horizontal. The Contractor shall also provide a high velocity gun w ith sufficient discharge and pressure to thoroughly clean manhole interiors.
C. ROOT REMOVAL
The Contractor shall be responsible for removal of roots within the sanitary sewer pipelines as part of the cleaning of the pipeline a nd no additional compensation will be allowed therefor. Roots shall be removed where reve aled by the video inspection.
Special attention shall be used during the cleaning operation to assure a removal of roots from the joints. Procedures may include, but not li mited to, the use of mechanical equipment such as rodding machines and bucket machi nes using root cutters and porcupines, and equipment such as high velocity jet cleaners. Care shall be taken not to damage the existing pipe.
D. DEBRIS REMOVAL
The Contractor shall provide suitable equipment to catch and remove all debris dislodged during cleaning operations from the nearest downstr eam manhole. Equipment or methods which require a member or members of the CO NTRACTOR’s crew, to physically excavate debris from within the manhole is prohibited. All debris shall be promptly removed from the sewer from the nearest ma nhole and shall be disposed of off- site in a lawful manner at a City-approved loc ation. Hauling containers shall be watertight.
PART 3 - EXECUTION
3.1 GENERAL
The Contractor shall at all times conduct the work so as to prevent any blockage and minimize surcharging in the sewer manholes and conn ecting sewer pipelines. Damage to existing facilities as a result of the CONTRACTO R's work shall be promptly repaired in kind at the CONTRACTOR's expense. Prior to clean ing operations, the Contractor shall remove gripper plugs at cleanouts along the main pipeline being cleaned.
3.2 CLEANING
Cleaning shall remove all sludge, rocks, debris, ro ots, grease accumulations and obstructions from the sewer. Sewer cleaning methods may include water jetting, rodding, or bucketing. Unless otherwise directed by the Cons truction Manager, the Contractor shall select the most effective of these cleaning methods according to the prevailing site condition. Where bucketing is warranted, bucket machines shall be used to remove the major portion of debris. Bucket operations shall proceed in the upstream direction in one sewer reach at a time. The operation shall continue until the buckets can pass the entire reach with minimum collection of debris. Upon completion, the line shall be hydraulically cleaned.
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During cleaning operations, the Contractor shall pr ovide a means of catching and removing the dislodged debris conveyed with the sewer flow, to the nearest downstream manhole. The method chosen shall not allow the tran sport of debris to downstream sewer reaches. All debris shall be disposed of at the end of each day.
END OF SECTION
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SECTION 15 – CCTV INSPECTION OF EXISTING AND REHABILITATED SEWERS PART 1 - GENERAL
1.1 DESCRIPTION
A. SCOPE
The Contractor shall perform Closed Circuit Televis ion (CCTV) inspections of the pipelines and record any defect discovered. The Con tractor shall perform CCTV inspections of all active lower laterals located be tween City clean-out and sewer main prior to replacement, and submit the videos for review by the Engineer.
The Contractor will also perform CCTV inspections o f all laterals located between City clean-out and sewer main after replacement to verif y compliance with the Contract Documents.
The City has performed CCTV inspection of sewer main pipelines included in the project.
The inspections are available at the Public Works D epartment and are for information purposes only. The Contractor shall review the CCTV inspection videos and field verify.
B. REQUIREMENTS
The Contractor shall inspect the sewer interior usi ng a color CCTV and document the inspection on a digital recorder. All inspection vi deo shall be submitted in MPEG file format (.mpg) and saved on DVDs for submittal. DVD submittals on proprietary software are not permitted. Each inspected sewer reach, manh ole to manhole, should have an associated MPEG file. Electronic PDF (.pdf) files o f each inspection log and digital photographs (.jpg) files shall accompany the video inspections for each sewer reach (manhole to manhole) inspected.
The purpose of the pre-rehabilitation inspections s hall be to verify condition of the existing sewers, assess cleaning needs, locate and log defects such as obstacles and breaks and to provide a permanent record of the existing sewer and lateral condition as it relates to line dimensions, material, changes and connections.
The purpose of the post-rehabilitation inspections will be to verify condition of the lining of the sewer and to provide a permanent record of t he rehabilitated sewer and lateral connection (if any) conditions.
1.2 QUALITY ASSURANCE
A. CONTRACTOR’s Qualifications: The Contractor shal l have a minimum of three (3) years of experience in such work necessary to successfully meet this specification and provide references for five (5) sewer inspection projects i nvolving remote CCTV pan and tilt inspection.
B. The Contractor shall have all operators who are responsible for locating and logging defects into the data collection software successfu lly trained and certified through
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National Association of Sewer Service Companies (NASSCO) Pipeline Assessment and Certification Program (PACP).
1.3 SUBMITTALS
A. List of at least five (5) similar pipeline proje cts within the past five (5) years that required remote pan and tilt inspection. The reference proje cts shall contain a minimum total of 10,000 linear feet of CCTV pan and tilt.
B. Resume(s) and project references for the field p ersonnel who will be employed for this project, including the NASSCO PACP Certification number for each operator.
C. Example of previous work for approval. The examp le shall consist of one DVD of previous sewer inspection work complete with audio commentary and inspection log(s).
The submitted example shall be the work of the fiel d supervisor or foreman to be used on this project. Contractor shall be responsible fo r modifications to equipment and/or inspection procedures to achieve report material of acceptable quality.
D. Manufacturer's product literature for all video equipment including but not limited to cabling, camera, monitor, footage counter, video titling device, and recorder.
E. Written plan for verification of active laterals .
PART 2 - PRODUCTS
2.1 SEWER MAIN CCTV CAMERA
A. The camera(s) shall be operative in 100 percent humidity/submerged conditions. The CCTV camera equipment shall provide a view of the p ipe ahead of the equipment and of features to the side and rear of the equipment through turning and rotation of the lens.
The camera shall be capable of tilting at right ang les along the axis of the pipe while panning the camera lens through a full circle about the circumference of the pipe. The lights on the camera shall also be capable of panning 90-degrees to the axis of the pipe.
If the equipment proves to be unsatisfactory, it sh all be replaced with adequate equipment. The camera unit shall have sufficient qu antities of line and video cable to inspect sewers with access as far apart as 450 feet.
The CCTV camera, electronic systems and monitor sha ll provide an image that meets the following specifications:
1. The gray scale shall show equal changes in brigh tness ranging from black to white with a minimum of five stages.
2. With the monitor control correctly adjusted, the six colors - Yellow, Cyan, Green, Magenta, Red, and Blue, plus Black and White, shall be clearly resolved with the primary colors in order of decreasing luminance. Th e gray scale shall appear in contrasting shades of gray with no color tint.
3. The picture shall show no convergence or diverge nce over the whole of the picture.
The monitor shall be at least 13 inches diagonally across the picture tube.
4. The live picture on the CCTV monitor shall be ca pable of registering a minimum of 500 lines horizontal resolution and be a clear, stable image with no interference.
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B. Lighting intensity shall be remote controlled an d shall be adjusted to minimize reflective glare. Lighting and camera quality shall provide a clear, in-focus picture of the entire inside periphery of the sewers and laterals for all conditions except submergence. Under ideal conditions (no fog in the sewer) the camera lighting shall allow a clear picture up to five pipe diameter lengths away for the entire peri phery of the sewer. The lighting shall provide uniform light free from shadows or hot spots.
C. Camera focal distance shall be remotely adjustab le through a range of 6 inches to infinity.
D. The monitor and software shall also be able to c apture and save screen images of typical sewer details and all defects. Screen image files s hall be named using upstream manhole number and footage and submitted on DVD fol lowing paragraph 3.8 of this section.
2.2 VIDEO RECORDINGS
A. The video and audio recordings of the sewer insp ections shall be made using digital video equipment. The digital recording equipment shall capture sewer inspection on DVD with each sewer reach inspection recorded as an ind ividual movie file (.mpeg, .mpg).
The files shall be named according to Upstream/Down stream manhole numbers or per requirements established elsewhere in the Specifications.
B. The audio portion of the composite video shall b e sufficiently free from electrical interference and background noise to provide comple te intelligibility of the oral report.
Audio shall be recorded by the operating technician on the inspection video as the sewer is inspected and shall include the sewer location, identification of beginning and terminating manholes including location (address or cross streets), inspection direction, length of inspection, side sewer identification, flow information, complete descriptions of the sewer line conditions as they are encountered, description of the rehabilitation work, reason for termination, and other relevant commenta ry to the inspections. In addition, the audio reports shall include the distance traveled on the specific run, a description of abnormal conditions in the sewer and side sewer connections as they are encountered, explanations for pausing, backing up, or stopping t he survey, and the final measured center to center distances between consecutive manh oles. Audio dubbing after the inspection is prohibited.
C. The reaches shall be inspected from upstream to downstream, wherever possible. The images recorded on the CCTV video shall be the same images that are required to be displayed on the CCTV monitor. The footage counter shall be zeroed at the beginning of each inspection and at each intermediate manhole al ong the inspection run. The video recorder shall be paused if the camera progress is stopped for a period longer than 30 seconds due to breakdown of the equipment, or any p urpose other than analyzing conditions of the sewer. The operator shall documen t the delay on the recording when progress resumes.
D. The equipment used for the inspection must provi de for simultaneous monitoring of the in-sewer inspection by the Construction Manager or City. Equipment that does not allow for out of sewer observation of the inspection will not be allowed.
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E. Typed labels shall be attached to the face of ea ch CD or DVD. The typed index labels shall include the following information:
1. Content (CCTV)
2. Contractor name
3. Type of survey (CCTV)
4. Interceptor name
5. Reaches included (from Manhole Number ## to Manh ole Number ##)
6. Date of survey
7. Work order number (if applicable)
8. Sheet number in plans
F. The inspection video shall be delivered on a med ium that is not re-recordable. Contractor shall maintain a copy of all inspection documentation (DVDs, databases, and logs) for the duration of the work and warranty period.
2.3 PRODUCT DATA
A. The Contractor shall provide the following infor mation in accordance with Section General Provisions, GP- 4.19; Submittals:
1. TV inspection reports as specified in paragraph 3.7 of this section shall be submitted each week covering the previous week's work.
PART 3 - EXECUTION
3.1 GENERAL
A. The CCTV camera shall be positioned as close to the spring line as possible while maintaining the required equipment stability. If the flow levels are above the spring line, then the vertical position of the camera shall be j ust above the free water surface. The Contractor shall identify and record wrinkles, folds, drips, and other defects found during the CCTV inspection. The Contractor shall inspect a nd document all manholes encountered during the inspection activities. The camera shall pan the periphery of the manhole from casting to invert. Inspections shall be conducted during low flow periods to increase the viewable sidewall area of the pipe.
B. The speed that the camera or survey unit is conv eyed through the sewer while performing general inspections shall be uniform and shall be l imited to a maximum of 30-feet per minute. The survey unit shall be slowed, stopped, o r backed-up to perform detailed inspections of significant features. The camera shall be stopped at all defects, changes in material, water level, size, side connections, m anholes, junctions, or other unusual areas. When stopped at the defect or feature, the o perator shall pan the camera to the area and along the circumference of the pipe. The operator shall also record audio of the type of defect or feature, clock position, footage, extent or other pertinent data. Still photographs or screen captures shall be taken at al l defects and general line condition photographs should be taken at least every 50 feet.
C. During period of camera advancement along the re ach, the operator should pan to view the flow line conditions along both sides of the pi pe and the crown at regular intervals.
This may be done while the camera is moving forward as long as the recorded
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picture quality is not adversely affected. When vie wing the flow line area, the camera should be returned to the forward position providin g a full view of the pipe before panning to view the opposite side of the sewer or the crown conditions.
D. At the Contractor's discretion or direction of t he Construction Manager, the camera shall be stopped or backed up (when conditions allow) to view and analyze conditions that appear to be unusual or uncommon for a sound sewer. The lens and lighting shall be readjusted, if need be, in order to ensure a clear, distinct, and properly lighted feature.
The video recorder shall be paused if the camera progress is stopped for a period longer than 30 seconds due to breakdown of the equipment, or any purpose other than analyzing conditions of the sewer. The operato r shall document the delay on the recording when progress resumes.
E. The Contractor shall be responsible for all traf fic control measures required.
3.2 LINEAR MEASUREMENT
A. The Contractor shall measure the camera progress along the full length of each reach.
The length counter shall be zeroed at the beginning of each inspection, and at any intermediate manhole. In the case of resuming an in spection at an intermediate point along the pipeline, the length counter shall start at the last point recorded. The Contractor shall ensure that the counter starts to register immediately when camera progress starts.
The device shall be observable at ground level. Mar kings on the cable, instruments requiring observation inside a manhole, or correcti on of the length for the depth of the manhole are not acceptable.
B. Prior to commencing inspections, the Contractor shall demonstrate compliance with the linear measurement tolerance specified below:
1. The equipment shall measure the location of the camera unit in 1-foot increments from the beginning (upstream end) of each continuou s section. This footage location must be displayed on the CCTV monitor and recorded.
2. The accuracy of the measured location shall be w ithin + 0.5% of the actual length of the sewer reaches being surveyed, or 1 foot, whichever is greater.
3.3 CCTV MONITOR DISPLAY
A. The images displayed on the CCTV monitors shall be a view of the pipe above the water surface as seen by the CCTV camera as the unit is conveyed through the sewer.
B. The camera lighting shall be fixed in intensity prior to commencing the survey and the white balance set to the color temperature emitted. In order to ensure color constancy, ideally no variation in illumination shall take place during the survey.
3.4 DATA DISPLAYS
A. The CCTV images shall include an initial data di splay that identifies the sewer reach being surveyed and a survey status display that pro vides continuously updated information on the location of the survey unit as t he survey is being performed. These data displays shall be in alphanumeric form. The si ze and position of the data shall not interfere with the main subject of the monitor picture.
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B. The on-screen display should be white during ins pections where the background behind the display is dark and, conversely, black where the background is light.
C. At the beginning of each reach of sewer being in spected, the following information shall be electronically generated and displayed on the CCTV monitors as well as included in the audio track:
1. Date of survey
2. Interceptor name/location
3. Manhole number to manhole number (in order of in spection)
4. Direction of survey (upstream or downstream)
5. Time of start of survey.
D. During inspections, the following information sh all be electronically generated, automatically updated, and displayed on the CCTV monitors:
1. Survey unit location in the sewer line in feet a nd tenths of feet from adjusted zero.
2. Sewer diameter
3. Abbreviated manhole reference numbers (upstream and downstream manholes in order of survey direction).
3.5 MANHOLE NUMBERING, INSPECTION FORMS AND DEFECT CODES A. The Contractor shall use the City’s manhole numb ering system when performing the inspections for this project. The entire manhole number must be used when referring to an upstream/downstream manhole for a pipe reach. Defect codes shall conform to those specified in the NASSCO PACP specification.
3.6 PRE-CLEANING INSPECTIONS
A. If the camera cannot pass the entire sewer reach from its starting direction, the reach shall be inspected as much as possible from both upstream and downstream directions.
If the pipe cannot be fully inspected from either the upstream and downstream manholes the Contractor shall notify the Construction Manage r. Such notification shall be written and include manhole to manhole reach numbers and the reason why inspection cannot be completed.
B. If any Contractor equipment becomes stuck in the sewer, the Contractor shall be responsible for all costs associated with extracting the equipment from the sewer.
C. Any damages to public or private property result ing from Contractor activities shall be repaired by the Contractor at no cost to the City.
D. City shall be present and observe pre-constructi on CCTV inspection.
3.7 REPORT
A. Two copies of the pre-rehabilitation and post-in stallation (4 copies total) inspection videos in sequential order from upstream manhole to downst ream manhole saved in mpeg format on DVDs; electronic version (.jpg) of still photographs saved on DVDs; a digital Microsoft Access database conforming to the NASSCO PACP database standard
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populated with all inspection and defect information; and hard copies and electronic pdf files of the inspection logs shall be submitted to the Construction Manager for review and approval. DVDs or sections thereof that do not conform to the specifications shall be re- recorded in the field at the Contractor's expense. Original DVDs and re-recorded runs shall be edited to provide a record with all inspections in sequential order from upstream to downstream. DVDs not in sequential order are unacceptable.
B. The TV inspection report shall include video rec ordings, pictures and any City required inspection forms and defect codes. Contractor shall provide equal documentation on both the videos and forms. Contractor shall maintain a c opy of all report material. The Contractor shall provide comments as necessary to fully describe the existing condition of the sewer, both through the voice over on the vi deos and on the inspection forms.
Photographs shall further document both typical sew er features, and defects. The photographs shall be copied to a DVD and submitted to the Construction Manager along with the videos and logs.
3.8 DVDs
A. TV inspections shall be recorded in DVD format.
B. Each recording shall continuously display the fo llowing:
1. Name of the sewer or storm drain.
2. City project number.
3. Manhole number (on construction drawings) from w hich the camera is traveling.
4. Manhole number to which the camera is traveling.
5. Distance measurements (within 1 percent accuracy )
6. Date of recording and inspector.
7. Pipe diameter.
8. Pipe material.
C. DVD recordings shall include an audio track reco rded by the inspection technician during the actual inspection work describing the parameter s of the line being inspected (i.e., location, depth, diameter, pipe type), as well as d escribing connections, defects and unusual conditions observed during inspection.
D. DVDs shall be professionally labeled showing the project name, the lines recorded on the tape, date, and name of Contractor/Inspector.
END OF SECTION
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SECTION 16 – REINFORCEMENT STEEL
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish, fabricate, and place all concrete-reinforcement steel, welded wire fabric, couplers, and concrete inserts for use in reinforced concrete and shall perform all appurtenant WORK, including all wires, clips, supports, chairs, spacers, and other accessories, all in accordance with the Contract Documents.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall be performed in accordance with codes as referenced herein.
B. Commercial Standards :
ACI 315 Details and Detailing of Concrete Reinforce ment ACI 318 Building Code Requirements for Reinforced C oncrete ASTM A 615 Specification for Deformed and Plain Bil let-Steel Bars for Concrete Reinforcement.
CRSI MSP-1 Concrete Reinforcing Steel Institute Man ual of Standard Practice
1.3 CONTRACTOR SUBMITTALS
A. The CONTRACTOR shall furnish shop-bending diagra ms and reinforcing bar lists, placing lists, and drawings of all reinforcement steel prior to fabrication.
B. Where mechanical couplers are required or permit ted to be used to splice reinforcement steel, the CONTRACTOR shall submit manufacturer’s l iterature that contains instructions and recommendations for installation for each type of coupler used; certified test reports that verify the load capacity of each type and size of coupler used; and shop drawings that show the location of each coupler wit h details of how they are to be installed in the form work.
1.4 QUALITY ASSURANCE
A. If requested by the ENGINEER, the CONTRACTOR sha ll provide samples from each heat of reinforcement steel delivered in a quantity adequate for testing. Costs of initial tests will be paid by the CITY. Costs of additional tests due to material failing initial tests shall be paid by the CONTRACTOR.
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PART 2 - PRODUCTS
2.1 REINFORCEMENT STEEL
A. Reinforcement Steel for all cast-in-place, reinforced-concrete constru ction shall conform to the following requirements:
1. Bar reinforcement shall conform to the requireme nts of ASTM A 615 for Grade 60 Billet Steel Reinforcement with supplementary requi rement S-1, or as otherwise shown.
B. Accessories:
1. Accessories shall include all necessary chairs, slab bolsters, concrete blocks, tie wires, dips, supports, spacers, and other devices to position reinforcement during concrete placement. All bar supports shall meet the requirements of the CRSI Manual of Standard Practice
2. Concrete blocks (dobies), used to support and po sition reinforcement steel, shall have the same or higher compressive strength as spe cified for the concrete in which it is located. Wire ties shall be embedded in concrete block bar supports.
2.2 MECHANICAL COUPLERS
A. At CONTRACTOR’s option, mechanical couplers may be used in lieu of lap splices or dowels. Submit mechanical coupler data sheet and la yout for approval by the ENGINEER. The couplers shall develop a tensile stre ngth that exceeds 125 percent of (125%) the yield strength of the reinforcement bars being spliced at each splice.
B. Where the type of coupler used is composed of mo re than one (1) component, all components required for a complete splice shall be supplied. This shall apply to all mechanical splices, including those splices intended for future connections.
C. The reinforcement-steel coupler used shall be co mpatible for obtaining the required strength of the connection. Straight threaded-type couplers shall require the use of the next larger size reinforcing bar or shall be used with reinforcing bars with specially forged ends that provide upset threads that do not decrease the basic cross-section of the bar.
D. Couplers shall be Lenton Form Saver as manufactured by Erico Products ; Dowel Bar Splicer System as manufactured by Richmond Scre w Anchor Company , or approved equal.
2.3 WELDED SPLICES
A. Welded splices shall not be used.
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PART 3 - EXECUTION
3.1 GENERAL
All reinforcement-steel, couplers, and other appurt enances shall be fabricated and placed in accordance with the requirements of the Building Code and the supplementary requirements specified herein.
3.2 FABRICATION
A. General:
1. Reinforcement steel shall be accurately formed, and the fabricating details shall be prepared in accordance with ACI 315 and ACI 318, unless otherwise indicated in the Contract Documents. Stirrups and tie bars shall be bent around a pin having a diameter not less than 1-1/2 inches for No. 3 bar s, 2 inches for No. 4 bars, and 2-1/2 inches for No. 5 bars. Bends for other bars shall be made around a pin having a diameter not less than six (6) times the bar diameter, except for bars larger than 1 inch, in which case the bends shall be made aroun d a pin of eight (8) bar diameters. Bars shall be bent cold.
2. The CONTRACTOR shall fabricate reinforcement bar s for structures in accordance with bending diagrams, placing lists, an d placing drawings. Said drawings, diagrams, and lists shall be prepared by the CONTRACTOR.
B. Fabricating Tolerances : Bars used for concrete reinforcement shall meet the following requirements for fabricating tolerances:
1. Sheared length: ±1 inch
2. Depth of truss bars: +0, -1/2 inch
3. Stirrups, ties, and spirals: ±1/2 inch
4. All other bends: ±1 inch
3.3 PLACING
A. Reinforcement steel shall be accurately position ed and shall be supported and wired together to prevent displacement, using annealed-ir on, wire ties or suitable clips at intersections. All reinforcement steel shall be supported by concrete, plastic supports or spacers, or metal hangers that are strong and rigid enough to prevent any displacement of the reinforcement steel. Where concrete is to be placed on the ground, supporting concrete blocks (or dobies) shall be used, in suffi cient numbers to support the bars without settlement, but in no case shall such support be continuous. All concrete blocks used to support reinforcement steel shall be tied t o the steel with wire ties that are embedded in the blocks. For concrete over form work, the CONTRACTOR shall furnish concrete, plastic, or other acceptable bar chairs and spacers.
B. Limitations on the use of bar support materials shall be as follows:
1. Concrete dobies are permitted at all locations, except where architectural finish is required.
2. Plastic bar supports are permitted at all locati ons, except on grade.
C. Tie wires shall be bent away from the forms in o rder to provide the specified concrete coverage.
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D. Bars additional to those shown that may be found necessary or desirable by the CONTRACTOR for the purpose of securing reinforcemen t in position shall be provided by the CONTRACTOR at its own expense.
E. Unless otherwise specified, reinforcement placin g tolerances shall be within the limits specified in Section 7.5 of ACI 318, except where in conflict with the requirements of the Building Code.
F. Bars may be moved as necessary to avoid interfer ence with other reinforcement steel, conduits, or embedded items. If bars are moved more than one (1) bar diameter or enough to exceed the specified tolerances, the resulting arrangement of bars shall be as acceptable to the ENGINEER.
G. Accessories supporting reinforcing bars shall be spaced such that there is no deflection of the accessory from the weight of the supported b ars. When used to space the reinforcing bars from wall forms, the forms and bars shall be located so that there is no deflection of the accessory when the forms are tightened into position.
3.4 SPACING OF BARS
A. The clear distance between parallel bars shall b e not less than the nominal diameter of the bars, not less than 1 times the maximum size of the coarse aggregate, nor less than 1 inch.
B. The clear distance between bars shall also apply to the distance between a contact splice and adjacent splices or bars.
3.5 SPLICING
A. General : Reinforcement bar splices shall only be used at l ocations shown. When it is necessary to splice reinforcement at points other than where shown, the character of the splice shall be as acceptable to the ENGINEER.
B. Splices of Reinforcement :
1. The length of lap for reinforcement bars, unless otherwise shown, shall be in accordance with ACI 318.
C. Bending or Straightening : Reinforcement shall not be straightened or rebent in a manner that will injure the material. Bars with kin ks or bends not shown shall not be used. All bars shall be bent cold, unless otherwise permitted by the ENGINEER. No bars partially embedded in concrete shall be field-bent, except as shown or specifically permitted by the ENGINEER.
D. Couplers that are located at a joint face shall be a type that can be set either flush or recessed from the face. The couplers shall be seale d during concrete placement to completely eliminate concrete or cement paste from entering. Couplers intended for future connections shall be recessed a minimum of 1 /2 inch from the concrete surface.
After the concrete is placed, the coupler shall be plugged with plastic plugs that have an O-ring seal and the recess filled with sealant to p revent any contact with water or other corrosive materials. Threaded couplers shall be plugged.
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E. Unless noted otherwise, mechanical coupler spaci ng and capacity shall match the spacing and capacity of the reinforcing shown for the adjacent section.
3.6 CLEANING AND PROTECTION
A. Reinforcement steel shall at all times be protec ted from conditions conducive to corrosion until concrete is placed around it.
B. The surfaces of all reinforcement steel and othe r metal work to be in contact with concrete shall be thoroughly cleaned of all dirt, g rease, loose scale, rust, grout, mortar, and other foreign substances immediately before the concrete is placed. Where there is delay in depositing concrete, reinforcement shall b e reinspected and, if necessary, recleaned.
3.7 EMBEDMENT OF DRILLED, REINFORCING-STEEL DOWELS
A. Hole Preparation:
1. The hole diameter shall be as recommended by the epoxy manufacturer but shall be no larger than 1/4 inch greater than the diamete r of the outer surface of the reinforcing bar deformations.
2. The depth of the hole shall be as recommended by the epoxy manufacturer to fully develop the bar but shall not be less than twelve (12) bar diameters, unless noted otherwise.
3. The hole shall be drilled by methods that do not interfere with the proper bonding of epoxy.
4. Existing reinforcing steel in the vicinity of pr oposed holes shall be located prior to drilling. The location of holes to be drilled shall be adjusted to avoid drilling through or nicking any existing reinforcing bars.
5. The hole shall be blown clean with clean, dry co mpressed air to remove all dust and loose particles.
B. Epoxy shall be injected into the hole through a tube placed to the bottom of the hole. The tube shall be withdrawn as epoxy is placed but kept immersed to prevent formation of air pockets. The hole shall be filled to a depth th at ensures that excess material will be expelled from the hole during dowel placement.
C. Dowels shall be twisted during insertion into th e partially filled hole so as to guarantee full wetting of the bar surface with epoxy. The bar shall be inserted slowly enough to avoid developing air pockets.
END OF SECTION
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SECTION 17 – CAST-IN-PLACE CONCRETE
PART 1 - GENERAL
1.1 THE REQUIREMENT
A. The CONTRACTOR shall furnish all materials for c oncrete in accordance with the provisions of this Section and shall form, mix, place, cure, repair, finish, and do all other work as required to produce finished concrete, all in accordance with the requirements of the Contract Documents.
B. Concrete items used on this Project include manh ole bases and collars. All new manholes shall have cast-in-place concrete bases an d formed channels with inverts to match the adjoining pipes.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall be performed in accordance with all codes as referenced herein.
B. Commercial Standards : Without limiting the generality of other requirem ents of these Specifications, all WORK specified herein shall con form to or exceed the applicable requirements of the referenced standards provided that wherever the provisions of said publications are in conflict with the requirements specified herein, the more stringent requirement shall apply.
ACI 214 Recommended Practice for Evaluation of Stre ngth Test Results of Concrete
ACI 301 Specifications for Structural Concrete for Buildings ACI 318 Building Code Requirements for Reinforced C oncrete ACI 347 Recommended Practice for Concrete Formwork
ASTM C 31 Test Methods of Making and Curing Concret e Test Specimens in the Field.
ASTM C 33 Specification for Concrete Aggregates.
ASTM C 39 Test Method for Compressive Strength of C ylindrical Concrete Specimens.
ASTM C 94 Specification for Ready-Mixed Concrete.
ASTM C 136 Test Method for Chemical Analysis of Fin e and Coarse Aggregates.
ASTM C 143 Test Method for Slump of Hydraulic Cemen t Concrete.
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ASTM C 150 Specification for Portland Cement.
ASTM C 156 Test Method for Water Retention by Concr ete Curing Materials.
ASTM C 192 Test Method of Making and Curing Concret e Test Specimens in the Laboratory.
ASTM C 260 Specification for Air-Entraining Admixtu res for Concrete.
ASTM C 494 Specification for Chemical Admixtures fo r Concrete.
ASTM C 618 Standard Specification for Coal Fly ash and Raw or Calcined Natural Pozzolan for Use in Concrete.
1.3 CONTRACTOR SUBMITTALS
A. Mix Designs : Prior to beginning the WORK, the CONTRACTOR shal l submit to the ENGINEER, for review, preliminary concrete mix designs that show the proportions and gradations of all materials proposed for each class and type of concrete specified herein.
The mix designs shall be designed by an independent testing laboratory acceptable to the ENGINEER. All costs related to such mix design shall be borne by the CONTRACTOR. This Specification sets the minimum req uirements for mix design that meets all requirements specified herein.
B. Certified Delivery Tickets : Where ready-mix concrete is used, the CONTRACTOR shall furnish certified weighmaster delivery tickets at t he time of delivery of each load of concrete. Each certificate shall show the public we ighmaster’s signature, and the total quantities by weight of cement, sand, each class of aggregate, admixtures, and the amounts of water in the aggregate and added at the batching plant, as well as the amount of water allowed to be added at the site for the specific design mix. Each certificate shall, in addition, state the mix number, total yield in c ubic yards, and the time of day to the nearest minute, corresponding to the times when the batch was dispatched, when it left the plant, when it arrived at the job, the time tha t unloading began, and the time that unloading was finished.
C. When a water-reducing admixture is to be used, t he CONTRACTOR shall furnish mix designs for concrete both with and without the admixture.
1.4 QUALITY ASSURANCE
A. Unless otherwise specified, all formwork shall c onform to ACI 347.
B. The cost of all laboratory tests on cement, aggr egates, and concrete will be borne by the CITY. However, the CONTRACTOR shall be charged for the cost of any additional tests and investigation on WORK performed that does not m eet the requirements of the Contract Documents.
C. Concrete for testing shall be supplied by the CO NTRACTOR at no additional cost to the CITY, and the CONTRACTOR shall provide assistance t o the ENGINEER in obtaining
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samples and disposing and cleaning up excess materi al. Concrete samples for slump, air content, and test cylinders will be taken at the placement (discharge) end of the line.
D. Field Compression Tests:
1. Compression test specimens will be taken during construction from the first placement of each class of concrete specified herein and at intervals thereafter as selected by the ENGINEER to ensure continued compli ance with the Contract Documents. Each set of test specimens will be a minimum of four (4) cylinders.
2. Compression test specimens for concrete shall be made in accordance with ASTM C 31, Section 9.2. Specimens shall be 6 inch diameter by 12 inch high cylinders.
3. Compression tests shall be performed in accordan ce with ASTM C 39. One (1) test cylinder will be tested at seven (7) days and two (2) test cylinders will be tested at twenty-eight (28) days. The remaining cylinder will be held to verify test results, if needed.
E. Evaluation and Acceptance of Concrete
1. Evaluation and acceptance of the compressive str ength of concrete shall be according to the requirements of ACI 381, Chapter 5 , “Concrete Quality,” and as specified herein.
2. A statistical analysis of compression test resul ts will be performed according to the requirements of ACI 214. The standard deviation of the test results shall not exceed 640 psi.
3. If any concrete fails to meet these requirements , immediate corrective action shall be taken to increase the compressive strength for a ll subsequent batches of the type of concrete affected.
4. When the standard deviation of the test results exceeds 640 psi, the average strength for which the mix is designed shall be increased by an amount necessary to satisfy the statistical requirement that the probability of any test being more than 500 psi below or the average of any three (3) conse cutive tests being below the specified compressive strength is 1 in 100. The required average strength shall be calculated by Criterion No. 3 of ACI 214 using the actual standard of deviation.
5. All concrete that fails to meet the ACI requirem ents and these Contract Documents is subject to removal and replacement at the expense of the CONTRACTOR.
PART 2 - PRODUCTS
2.1 CONCRETE MATERIALS
A. Materials shall be delivered, stored, and handle d so as to prevent breakage or damage by water or sunlight. Only one (1) brand of cement shall be used. Cement reclaimed from cleaning bags or leaking containers shall not be us ed. All cement shall be used in the sequence of receipt of shipments.
B. All materials furnished for the WORK shall compl y with the requirements of ACI 301, Sections 201, 203, and 204, as applicable.
C. Materials for concrete shall conform to the foll owing requirements:
1. Cement shall be standard brand, Portland cement conforming to ASTM C 150 for Type II or Type V, containing not more than 0.60 percent alkalies.
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2. Water for mixing and curing shall be potable, cl ean, and free from objectionable quantities of silty organic matter, alkali, salts, and other impurities.
3. Aggregates shall be obtained from pits acceptabl e to the ENGINEER, shall be nonreactive, and shall conform to ASTM C 33. Lightweight sand for fine aggregate will not be permitted.
4. Ready-mix concrete shall conform to the requirem ents of ASTM C 94.
5. Admixtures : All admixtures shall be compatible and by a singl e manufacturer capable of providing qualified field service repres entation. Admixtures shall be used in accordance with manufacturer’s recommendati ons. If the use of an admixture is producing an inferior end result, the CONTRACTOR shall discontinue use of the admixture. Admixtures shall not contain thiocyanates nor more than 0.05 percent chloride ion and shall be nontoxic after thirty (30) days. a. Set controlling and water reducing admixtures : Admixtures may be added at the CONTRACTOR’s option to control the set , effect water reduction, and increase workability. The addition of an admixture shall be at the CONTRACTOR’s expense. The use of an admixture s hall be subject to acceptance by the ENGINEER. Admixtures specified he rein shall conform to the requirements of ASTM C 494. The required qua ntity of cement shall be used in the mix regardless of whether or not an admixture is used. 1) Concrete shall not contain more than one (1) wat er reducing mixture.
Concrete containing an admixture shall be first pla ced at a location determined by the ENGINEER.
2) Set controlling admixture shall be either with o r without water-reducing properties. Where the air temperature at the time o f placement is expected to be consistently over 80 degrees Fahrenh eit, a set retarding admixture such as Plastocrete by Sika Corporation; Pozzolith 300R by BASF; Daratard by W.R. Grace ; or approved equal shall be used. Where the air temperature at t he time of placement is expected to be consistently under 40 d egrees Fahrenheit, a noncorrosive set accelerating admixtu re such as Plastocrete 161FL by Sika Corporation; Pozzutec 20 by BASF; Daraset by W.R. Grace ; or approved equal shall be used. 3) Normal range water reducer shall conform to ASTM C 494, Type A, such as WRDA 79 by W.R. Grace; Pozzolith 322-N by BASF; Plastocrete 161 by Sika Corporation; or approved equal. The quantity of admixture used and the method of mixing shall be in accordance with the manufacturer’s instructions and
recommendations.
4) High range water reducer shall conform to ASTM C 494, Type F or G, such as Duracem 100 or WDRA 19 by W.R. Grace; Sikament FF or Sikament 86 by Sika Corporation; Rheobuild 1000 or Rheobuild 716 by BASF ; or approved equal. High range water reducer shall be added to the concrete after all other ingredients have been mixed and initial slump has been verified. No more than fourt een (14) ounces of water reducer per sack of cement shall be used. Wat er reducer shall be considered as part of the mixing water when calc ulating water/cement ratio.
5) If the high-range water reducer is added to the concrete at the job site, it may be used in conjunction with the same water r educer added at the batch plant. Concrete shall have a slump of 3 inches plus or minus
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1/2 inch prior to adding the high-range, water-redu cing admixture at the job site. The high-range, water-reducing mixtur e shall be accurately measured and pressure injected into the mixer as a single dose by an experienced technician. A standby system shall be provided and tested prior to each day’s operation o f the job site system.
6) Concrete shall be mixed at mixing speed for a mi nimum of thirty (30) mixer revolutions after the addition of the high-range water reducer.
6. Fly ash shall conform with ASTM C 618, Type F. F ly Ash may replace 15-25 percent of cement, by weight.
2.2 CURING MATERIALS
Materials for curing concrete, as specified herein, shall conform to the following requirements and ASTM C 309:
A. Concrete curing compound shall be white-pigmente d and resin-based. Sodium silicate compounds will not be allowed. Concrete curing comp ound shall be MC 429 by the BASF Company; Spartan Cote Cure-Seal Hardener by the Burke Company; Super Rez Seal by Euclid Chemical Company; or approved equal.
B. Polyethylene sheet for use as concrete curing bl anket shall be white and shall have a nominal thickness of 6 mils. The loss of moisture, when determined in accordance with the requirements of ASTM C 156, shall not exceed 0. 0078 pounds per square inch of surface.
2.3 EPOXY ADHESIVES
Epoxy adhesives for bonding freshly mixed, plastic concrete to hardened concrete shall be Sikadur 32 Hi-Mod Epoxy Adhesive, as manufactured by Sika Chemical Corporation; Concresive Liquid (LPL), as manufactured by BASF; B urkEpoxy mV, as manufactured by the Burke Company, or approved equal.
Epoxy adhesives for bonding hardened concrete to steel shall be Sikadur 31 Hi-Mod Gel, as manufactured by Sika Corporation; BurkEpoxy NS, as manufactured by the Burke Company; Concresive Paste (LPL), as manufactured by BASF, or approved equal.
2.4 CONCRETE DESIGN REQUIREMENTS
A. General : Concrete shall be composed of cement, admixtures, aggregates, and water.
These materials shall be of the qualities specified. The exact proportions in which these materials are to be used for different parts of the WORK will be determined during the trial batch. In general the mix shall be designed to produce a concrete capable of being deposited so as to obtain maximum density and minim um shrinkage and, where deposited in forms, to have good consolidation properties and maximum smoothness of surface. Mix designs with more than 41 percent of sand of the total weight of the fine and coarse aggregate shall not be used. The aggregate g radations shall be formulated to provide fresh concrete that will not promote rock p ockets around reinforcing steel or embedded items. The proportions shall be changed whenever necessary or desirable to
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meet the required results at no additional cost to the CITY. All changes shall be subject to review by the ENGINEER.
B. Water/Cement Ratio and Compressive Strength : The minimum twenty-eight (28) day compressive strength of the concrete shall be 4,000 psi. The minimum cement content of concrete shall be 564 pounds per cubic yard. The maximum aggregate size shall be 1 inch, and the maximum water/cement ratio, by weight, shall be 0.45.
NOTE: The CONTRACTOR is cautioned that the limiting param eters specified above are not a mix design. Additional cement or water-reducing agent may be required to achieve workability demanded by the CONTRACTOR’s construction methods and aggregates. The CONTRACTOR is responsible for any costs associated with furnishing concrete with the required workability.
C. Adjustments to Mix Design : The mixes used shall be changed whenever such change is necessary or desirable to secure the required st rength, density, workability, and surface finish, and the CONTRACTOR shall be entitle d to no additional compensation because of such changes.
2.5 CONSISTENCY
The quantity of water entering into a batch of conc rete shall be just sufficient, with a normal mixing period, to produce a concrete which c an be worked properly into place without segregation and which can be compacted by t he vibratory methods herein specified to give the desired density, impermeabili ty, and smoothness of surface. The quantity of water shall be changed as necessary, with variations in the nature or moisture content of the aggregates, to maintain uniform production of a desired consistency. The consistency of the concrete in successive batches shall be determined by slump tests in accordance with ASTM C 143. The slump shall be 3 inches, plus or minus 1 inch.
2.6 LABORATORY TESTS
The determination of compressive strength will be m ade by testing 6 inch diameter by 12 inch high cylinders. Test cylinders shall be mad e, cured, and tested in accordance with ASTM C 192 and ASTM C 39. Three (3) compressio n test cylinders will be tested at seven (7) days, and three test cylinders will be tested at twenty-eight (28) days. The average compressive strength for the three (3) cylinders tested at twenty-eight (28) days for any given trial batch shall not be less than 125 percent of the specified compressive strength.
2.7 MEASUREMENT OF CEMENT AND AGGREGATE
The amount of cement and of each separate size of aggregate entering into each batch of concrete shall be determined by direct weighing equipment furnished by the CONTRACTOR and acceptable to the ENGINEER, provided that where batches are so proportioned as to contain an integral number of co nventional sacks of cement and the cement is delivered at the mixer in the original unbroken sacks, the weight of the cement contained in each sack may be taken without weighing as ninety-four (94) pounds.
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2.8 MEASUREMENT OF WATER
The quantity of water entering the mixer shall be measured by a suitable water meter or other measuring device of a type acceptable to the ENGINEER and capable of measuring the water in variable amounts within a to lerance of one percent (1%). The water feed control mechanism shall be capable of being locked in position so as to deliver constantly any specified amount of water to each ba tch of concrete. A positive, quick- acting valve shall be used for a cut-off in the wat er line to the mixer. The operating mechanism shall be such that leakage does not occur when the valves are closed.
2.9 READY-MIXED CONCRETE
A. At the CONTRACTOR’s option, ready-mixed concrete meeting the requirements as to materials, batching, mixing, transporting, and plac ing, as specified herein and in accordance with ASTM C 94, including the supplementary requirements, may be used.
B. Ready-mixed concrete shall be delivered to the s ite of the WORK, and discharge shall be completed within one (1) hour after the addition of the cement to the aggregates or before the drum has been revolved two hundred fifty (250) revolutions, whichever is first.
In hot weather, or under conditions contributing to quick stiffening of the concrete, or when the temperature of the concrete is 85 degrees Fahrenheit or above, the time between the introduction of the cement to the aggregates and discharge shall not exceed forty-five (45) minutes.
C. Truck mixers shall be equipped with electrically actuated counters by which the number of revolutions of the drum or blades may be readily verified. The counter shall be of the resettable, recording type and shall be mounted in the driver’s cab. The counters shall be actuated at the time of starting mixers at mixing speeds.
D. Each batch of concrete shall be mixed in a truck mixer for not less than seventy (70) revolutions of the drum or blades at the rate of rotation designated by the manufacturer of the equipment. Additional mixing, if any, shall be at the speed designated by the manufacturer of the equipment as agitating speed. All materials, including mixing water, shall be in the mixer drum before actuating the rev olution counter for determining the number of revolutions of mixing.
E. Truck mixers and their operation shall be such t hat the concrete throughout the mixed batch as discharged is within acceptable limits of uniformity with respect to consistency, mix, and grading. If slump tests taken at approximately the one-quarter and three-quarter points of the load during discharge give slumps dif fering by more than 1 inch, then the mixer shall not be used on the WORK unless the caus ing condition is corrected and satisfactory performance is verified by additional slump tests. All mechanical details of the mixer, such as water measuring and discharge ap paratus, condition of the blades, speed of rotation, general mechanical condition of the unit, and clearance of the drum shall be checked before a further attempt to use the unit will be permitted.
F. Each batch of ready-mixed concrete delivered at the job site shall be accompanied by a certified weighmaster delivery ticket furnished to the ENGINEER.
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G. The use of non-agitating equipment for transport ing ready-mixed concrete will not be permitted. Combination truck and trailer equipment for transporting ready-mixed concrete will not be permitted.
PART 3 - EXECUTION
3.1 PROPORTIONING AND MIXING
A. Proportioning : Proportioning of the concrete mix shall conform t o the requirements of ACI 301, Chapter 3, ”Proportioning.”
B. Mixing : Mixing of concrete shall conform to ACI 301, Chapter 7.
C. Slump : Maximum slumps shall be as specified herein.
D. Retempering : Retempering of concrete or mortar that has partia lly hardened shall not be permitted.
3.2 PREPARATION OF SURFACES FOR CONCRETING
A. Earth surfaces shall be thoroughly wetted by spr inkling prior to the placing of any concrete, and these surfaces shall be kept moist by frequent sprinkling up to the time of placing concrete thereon. The surface shall be free from standing water, mud, and debris at the time of placing concrete.
B. All reinforcement and similar items shall be set and secured in the forms where shown on the Project Drawings or by shop drawings and shall be acceptable to the ENGINEER before any concrete is placed. Accuracy of placemen t is the responsibility of the CONTRACTOR.
C. Embedded Items : No concrete shall be placed until all form work, installation of parts to be embedded, reinforcing steel, and preparation of surfaces involved in the placing have been completed and accepted by the ENGINEER at leas t four (4) hours before placement of concrete. All surfaces of forms and em bedded items that have become encrusted with dried grout from concrete previously placed shall be cleaned of all such grout before the surrounding or adjacent concrete is placed.
D. All reinforcement, anchor bolts, sleeves, insert s, and similar items shall be set and secured in the forms where shown on the Project Dra wings or by shop drawings and shall be acceptable to the ENGINEER before any conc rete is placed. Accuracy of placement is the responsibility of the CONTRACTOR.
E. Casting New Concrete Against Old : Where concrete is to be cast against old concrete (any concrete which is greater than sixty (60) day of age), the surface of the old concrete shall be thoroughly cleaned and roughened by sandbl asting (exposing aggregate). An epoxy adhesive bonding agent shall be applied to th e old surface according to the manufacturer’s written recommendations.
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F. No concrete shall be placed in any structure unt il all water entering the space to be filled with concrete has been properly cut off or has been diverted by pipes (or other means), and carried out of the forms, clear of the WORK. No concrete shall be deposited underwater nor shall the CONTRACTOR allow still wat er to rise on any concrete until the concrete has attained its initial set. Water sh all not be permitted to flow over the surface of any concrete in such manner and at such velocity as will injure the surface finish of the concrete. Pumping or other necessary dewatering operations for removing groundwater, if required, will be subject to the review of the ENGINEER.
G. Openings for pipes, inserts for pipe hangers and brackets, and the setting of anchors shall, where practicable, be provided for during the placing of concrete.
H. Anchor bolts shall be accurately set and shall b e maintained in position by templates while being embedded in concrete.
I. Cleaning : The surfaces of all metalwork to be in contact wi th concrete shall be thoroughly cleaned of all dirt, grease, loose scale and rust, grout, mortar, and other foreign substances immediately before the concrete is placed.
3.3 HANDLING, TRANSPORTING, AND PLACING
A. General : Placing of concrete shall conform to the applicab le requirements of ACI 301, Chapter 8, and the requirements of this Section. No aluminum materials shall be used in conveying any concrete.
B. Unauthorized Placement : No concrete shall be placed except in the presenc e of the ENGINEER. The CONTRACTOR shall notify the ENGINEER in writing at least twenty- four (24) hours in advance of placement of any concrete.
C. Cold Weather Placement : Earth foundations shall be free from frost or ice to a minimum depth of 6 inches when concrete is placed upon or a gainst them. The concrete temperature shall be maintained above 50 degrees Fahrenheit for at least three (3) days after placement.
3.4 FINISHING CONCRETE SURFACES
A. General : Surfaces of curbs, gutters, sidewalks, and drivew ays shall be free from fins, bulges, ridges, offsets, or honeycombing and shall present a finished, continuously hard surface. Aluminum finishing tools shall not be used.
B. Unformed Surfaces : After proper and adequate vibration and tamping, all unformed top surfaces shall be brought to a uniform surface with suitable tools. For unformed concrete surfaces, sufficient leveling and screeding shall be provided to produce an even, uniform surface with surface irregularities not to exceed 3 /8 inch. No further special finish is required.
3.5 PROTECTION
A. The CONTRACTOR shall protect all concrete agains t injury until final acceptance by the CITY.
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B. Fresh concrete shall be protected from damage du e to rain, hail, sleet, or snow. The CONTRACTOR shall provide such protection while the concrete is still plastic and whenever precipitation is imminent or occurring.
3.6 CARE AND REPAIR OF CONCRETE
The CONTRACTOR shall protect all concrete against i njury or damage from excessive heat, lack of moisture, overstress, or any other cause until final acceptance by the CITY.
Particular care shall be taken to prevent the drying of concrete and to avoid roughening or otherwise damaging the surface. Any concrete found to be damaged, or that may have been originally defective, or which becomes defecti ve at any time prior to the final acceptance of the completed WORK, or which departs from the established line or grade, or which for any other reason does not conform to t he requirements of the Contract Documents shall be satisfactorily repaired or remov ed and replaced with acceptable concrete at the CONTRACTOR’s expense.
END OF SECTION
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SECTION 18 – GENERAL PIPING
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish all labor, materials, and tools necessary to install, test, and complete the piping in accordance with the Contract Documents.
1.2 QUALITY ASSURANCE
A. Like items of materials provided hereunder shall be the end products of one manufacturer in order to achieve standardization fo r appearance and manufacturer’s service.
B. To assure uniformity and compatibility of piping components in piping systems, fittings and couplings shall be furnished by the same manufacturer.
1.3 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. CITY standards and specifications shall be met a t all times unless otherwise noted.
C. The materials and work performed in this Section shall conform to the applicable standards of the latest edition of the following re ferences. In case of a conflict between the requirements of this Section and those of the listed documents, the requirements of this Section shall prevail.
Commercial Standards:
ANSI American National Standards Institute
ASTM American Society for Testing and Materials
UBC Uniform Building Code
UPC Uniform Plumbing Code
PART 2 - PRODUCTS
2.1 GENERAL
Provide all required piping and fittings in accordance with the individual piping sections.
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2.2 WARNING TAPE
Warning tape shall indicate type of pipeline and sh all be specifically designed for this use. Warning tape shall be green in color. The warning tape shall be minimum 12-inches wide and printed continuously with the words "CAUTI ON: SEWER LINE BELOW". The warning tape shall be 4.0 mil thickness minimum, li near low-density polyethylene specifically formulated for extended use underground and shall be placed in accordance with the Contract Documents.
PART 3 - EXECUTION
3.1 PREPARATION
A. Prior work : Dewatering shall be accomplished in accordance wi th the requirements of Section 2, Dewatering.
B. Layout of Controls : The CONTRACTOR shall establish line and grade con trol and staking in accordance with the Contract Documents.
3.2 EXCAVATION AND TRENCHING
Perform all excavations for pipelines and appurtena nces, of whatever substances encountered, to the depths indicated in the Contract Documents and in accordance with Section 4, Earthwork.
3.3 INSTALLATION
A. General:
1. Each pipe and fitting shall be carefully inspect ed before the buried pipe or fitting is lowered into the trench. The interior and exterior protective coating shall be inspected, and all damaged areas patched in the fie ld with material similar to the original. Clean ends of pipe thoroughly. Remove foreign matter and dirt from inside of pipe and keep clean during and after laying.
2. Clean out fittings and pipe sections before inst alling.
3. Furnish and assemble pipe and fittings to provid e accurate alignment for joints.
4. Make all joints watertight.
5. Provide temporary plugs or bulkheads for closure of the open ends of piping whenever WORK is stopped.
6. Use proper implements, tools, and facilities for the safe and proper protection of the pipe. Carefully handle pipe in such a manner as to avoid any physical damage to the pipe. Do not drop or dump pipe into trenches under any circumstances.
B. Buried Pipe:
1. Do not deviate more than 1 inch from lines or 1/ 4 inch from grade, unless reviewed and accepted by the ENGINEER. Measure for grade at the pipe invert, not at the top of the pipe, because of permissible variation in pipe wall thickness.
2. Grade the bottom of the trench by hand to the li ne and grade to which the pipe is to be laid, with proper allowance for pipe thicknes s and for gravel bedding when
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required. Remove hard spots that would prevent a un iform thickness of bedding.
Before laying each section of the pipe, check the g rade with a straight edge and correct any irregularities found. The trench bed sh all form a continuous and uniform bearing and support for the pipe at every point between bell holes, except that the grade may be disturbed for the removal of lifting tackle.
3. At the location of each joint, dig bell (joint) holes of ample dimensions in the bottom of the trench and at the sides, where necessary, to permit easy visual inspection of the entire joint.
4. Provide and maintain ample means and devices at all times to remove and dispose of all water entering the trench during the process of pipe laying. The trench shall be kept dry until the pipe laying and jointing are completed.
5. When pipe laying is not in progress, including t he noon hours, the open ends of pipe shall be closed by approved means, and no trench water, animals, or foreign material shall be permitted to enter the pipe.
6. Minimum pipe cover in the trench shall be 3 feet , unless otherwise indicated.
7. All buried pipe shall be prepared as hereinbefor e specified and shall be laid on the prepared granular base and bedded in accordance wit h the Contract Documents to ensure uniform bearing. No pipe shall be laid in water or when, in the opinion of the ENGINEER, trench conditions are unsuitable. Joi nts shall be made as herein specified for the respective types. Take all precautions necessary to prevent uplift and floating of the pipe prior to backfilling.
8. Where the pipe is to be connected to concrete st ructures, the connection shall be made as indicated in the Contract Documents.
3.4 CLEANING
A. Care shall be exercised during fabrication to pr event the accumulation of pipe cuttings, and filings, gravel, cleaning rags, etc., within piping sections. All piping shall be examined to assure removal of these and other foreign object s prior to assembly. Shop cleaning may employ any conventional commercial cleaning met hod if it does not corrode, deform, swell, or otherwise alter the physical properties of the material being cleaned.
B. Following assembly and testing and prior to fina l acceptance, all pipelines installed under this Section shall be flushed with high-velocity wa ter or flushed with cleaning ball, and all accumulated construction debris and other forei gn matter removed. Flushing velocities shall be a minimum of 2½ feet per second.
END OF SECTION
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SECTION 19 – POLYVINYL-CHLORIDE PIPE
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish and install all underg round polyvinyl-chloride (PVC), non-pressure pipe and all appurtenant WORK, complete and in place, all in accordance with the Contract Documents.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. Commercial Standards:
ASTM C 425 Specification for Compression Joints for Vitrified Clay Pipe and Fittings
ASTM D 1784 Specification for Rigid Poly (Vinyl Chl oride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds
ASTM D 2241 Specification for Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR-Series)
ASTM D 2321 Recommended Practice for Underground In stallation of Flexible Thermoplastic Sewer Pipe
ASTM D 3034 Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings
ASTM F477 Standard Specification for Elastomeric Se als (Gaskets) for Joining Plastic Pipe
ASTM F 794 Standard Specification for Poly (Vinyl C hloride) (PVC) Profile Gravity Sewer Pipe and Fittings Based on Controlled Inside Diameter
ASTM F 1803 Standard Specification for Closed Profi le Polyvinyl (PVC) Chloride Pipe with a Controlled Inside Diameter
1.3 CONTRACTOR SUBMITTALS
A. Shop Drawings : The CONTRACTOR shall submit shop drawings of all pipe, joints, bends, special fittings, and piping appurtenances.
B. Certificates : The CONTRACTOR shall provide manufacturers’ certi ficates for all materials indicating conformance to the Contract Documents.
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1.4 QUALITY ASSURANCE
A. Testing : All materials testing will be based upon applicab le ASTM Test Methods, as referenced herein for the materials specified.
B. All costs of such inspection and tests shall be borne by the CONTRACTOR.
C. Certificates : Manufacturer’s notarized certificates of complian ce shall be furnished by the CONTRACTOR.
1.5 DELIVERY, STORAGE, AND HANDLING
A. All plastic materials should be stored out of di rect sunlight.
PART 2 - PRODUCTS
2.1 GENERAL
A. All PVC pipe shall be continuously and permanent ly marked with the manufacturer’s name, pipe size, and pressure rating in psi and in conformance with the appropriate ASTM.
B. The CONTRACTOR shall require the manufacturer to mark the date of extrusion on the pipe. This dating shall be done in conjunction with records to be held by the manufacturer for two (2) years, covering quality control tests, raw material batch number, and other information deemed necessary by the manufacturer.
C. Pipe and fittings shall be colored green for in- ground identification as sewer pipe.
2.2 PIPE
A. All PVC pipe shall conform to the requirements o f ASTM D 3034, Class SDR 26. Material for PVC pipe shall be manufactured from rigid, unpl asticized polyvinyl chloride compound conforming to the requirements of ASTM D 1784 for Class 12454 or 12364.
2.3 FITTINGS
A. Pipe fittings shall be of the same material and rated for the same pressure as the pipe.
Fittings shall conform to the appropriate dimension s to accept the pipe as described above.
2.4 JOINTS
A. Pipe and fittings shall be joined by gasketed co mpression joints with integral bell and spigot unless otherwise indicated in the Contract Documents.
B. Gaskets for compression-type joints for PVC pipe and fittings shall conform to the requirements of ASTM F477.
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2.5 BEDDING MATERIAL
Pipe bedding material shall conform to the requirements of Section 4, Earthwork.
2.6 FLEXIBLE COUPLINGS
Flexible couplings shall be rubber, full-circle, clamp-on type conforming to ASTM C 425 and provided with two stainless-steel band, screw clamps to secure the coupling tightly to entering and exiting pipes. All screw-clamp hardware shall be Type 316 stainless steel.
Rubber material shall be suitable for sewage service.
2.7 WARNING TAPE
Install warning tape in accordance with Section 17, General Piping.
PART 3 - EXECUTION
3.1 GENERAL
A. All laying, jointing, and testing for defects an d for leakage shall be performed in the presence of the ENGINEER and shall be subject to in spection before acceptance. All material found during the progress of the WORK to h ave defects will be rejected, and the CONTRACTOR shall promptly remove such defective materials from the site of the WORK.
B. Installation shall conform to the requirements o f ASTM D 2321 and to the supplementary requirements or modifications specified herein. Wherever the provisions of this Section and the requirements of ASTM D 2321 are in conflict, the more stringent provision shall apply.
3.2 TRENCHING AND BACKFILL
A. Trench excavation and backfill shall conform to the requirements of Section 4, Earthwork.
3.3 LAYING PIPE
A. The pipe shall be installed in accordance with t he requirements of ASTM D 2321 and as indicated in the Contract Documents. The Sections s hall be closely jointed to form a smooth flow line. Immediately before placing each s ection of pipe in final position for jointings, the bedding for the pipe shall be checked for firmness and uniformity of surface.
B. Proper implements, tools, and facilities, as rec ommended by the pipe manufacturer’s standard printed installation instructions, shall b e provided and used by the CONTRACTOR for safe and efficient execution of the WORK. All pipe, fittings, and accessories shall be carefully lowered into the trench by means of derrick, ropes, or other suitable equipment in such a manner as to prevent d amage to pipe and fittings. Under no circumstances shall pipe or accessories be dropped or dumped into the trench.
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C. Cutting and machining of the pipe shall be accom plished in accordance with the pipe manufacturer’s standard procedures for this operation. Pipe shall not be cut with a cold- chisel, standard-iron, pipe cutter, nor any other m ethod that may fracture the pipe or produce ragged, uneven edges.
D. The pipe and accessories shall be inspected for defects prior to lowering into the trench.
Any defective, damaged, or unsound pipe shall be re paired or replaced. All foreign matter or dirt shall be removed from the interior of the pipe before lowering into position in the trench. Pipe shall be kept clean during and after laying. All openings in the pipeline shall be closed with watertight, expandable-type se wer plugs or PVC test plugs at the end of each day’s operation or whenever the pipe openings are left unattended. The use of burlap, wood, or other similar temporary plugs will not be permitted.
E. Adequate protection and maintenance of all under ground and surface utility structures, drains, sewers, and other obstructions encountered in the progress of the WORK shall be furnished by the CONTRACTOR, at its own expense, under the direction of the ENGINEER.
F. Where the grade or alignment of the pipe is obst ructed by existing utility structures, such as conduits, ducts, pipes, branch connections to ma in sewers, or main drains, the obstruction shall be permanently supported, relocated, removed, or reconstructed by the CONTRACTOR in cooperation with owners of such utili ty structures. Unless otherwise indicated, this WORK shall be performed at the CONTRACTOR’s expense.
3.4 HANDLING
A. Handling of the PVC pipe shall be done with care to ensure that the pipe is not damaged in any manner during storage, transit, loading, unloading, and installation.
B. Pipe shall be inspected both prior to and after installation in the trench, and all defective lengths shall be rejected and immediately removed from the working area.
3.5 FIELD JOINTING
A. Each pipe-compression-type joint shall be joined with a lock-in rubber ring and a ring groove that is designed to resist displacement during pipe insertion.
B. The ring and the ring seat inside the bell shall be wiped clean before the gasket is inserted. At this time, a thin film of lubricant sh all be applied to the exposed surface of the ring and to the outside of the clean pipe end. Lubricant other than that furnished with the pipe shall not be used. The end of the pipe sha ll then be forced into the ring to complete the joint.
C. The pipe shall not be deflected either verticall y or horizontally in excess of the printed recommendations of the manufacturer of the coupling.
D. When pipe laying is not in progress, the open en ds of the pipe shall be closed to prevent trench water from entering pipe. Adequate backfill shall be deposited on pipe to prevent floating of pipe. Any pipe that has floated shall be removed from the trench, cleaned, and
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relaid in an acceptable manner. No pipe shall be la id when, in the opinion of the ENGINEER, the trench conditions or weather are unsuitable for such work.
3.6 INSTALLATION OF FITTINGS
Fittings shall be installed utilizing standard inst allation procedures. Fittings shall be lowered into trench by means of rope, cable, chain, or other acceptable means without damage to the fittings. Cable, rope, or other devic es used for lowering fittings into trenches shall be attached around exterior of fitti ngs for handling. Under no circumstances shall the cable, rope, or other devic e be attached through the fitting’s interior for handling. Fittings shall be carefully connected to pipe or other facility, and joint shall be checked to ensure a sound and proper joint.
3.7 WARNING TAPE INSTALLATION
Warning tape shall be installed with all PVC sewer main pipes. The tape shall be installed along the pipe axis in the backfill minimum 12 inches above the crown of the pipe.
3.8 TESTING
Field testing of PVC gravity sewer pipe shall conform to the requirements of Section 12, Sanitary Sewer System Testing.
END OF SECTION
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SECTION 20 – HIGH-DENSITY POLYETHYLENE PIPE
PART 1 - GENERAL
1.1 THE REQUIREMENT
The CONTRACTOR shall furnish, install, and test, co mplete and in place, high-density polyethylene (HDPE) pipe and fittings, in accordance with the Contract Documents. The HDPE pipe and fittings specified herein shall be us ed only in association with pipe bursting, unless otherwise approved by the ENGINEER.
1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. Codes : All WORK shall comply with all codes, as referenced herein.
B. Commercial Standards:
ASTM D 638 Test Method for Tensile Properties of Pl astics ASTM D 790 Standard Test Methods for Flexural Prope rties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials ASTM D 1238 Test Method for Flow Rates of Thermopla stics by Extrusion Plastometer
ASTM D 1248 Specification for Polyethylene Plastics Molding and Extrusion Materials
ASTM D 1505 Test Method for Density of Plastics by the Density-Gradient Technique
ASTM D 2657 Practice for Heat Joining of Polyolefin Pipe and Fittings ASTM D 3261 Specification for Butt Heat Fusion Poly ethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing
ASTM D 3350 Specification for Polyethylene Plastic Pipes and Fittings Materials
ASTM F 585 Standard Guide for Insertion of Flexible Polyethylene Pipe into Existing Sewers
ASTM F 714 Specification for Polyethylene (PE) Plas tic Pipe (SDR-PR) Based on Outside Diameter
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1.3 SUBMITTALS
A. The CONTRACTOR shall furnish certificates to the ENGINEER certifying that the pipe and fittings furnished hereunder is in compliance w ith the requirements of the Contract Documents.
B. All submittals shall be in accordance with the r equirements of the Contract Documents.
C. Submit list of pipe and fittings to be used, whi ch includes the following information where applicable:
1. List of pipe and fittings to be used
2. Manufacturer
3. Model number, if applicable
4. Size and schedule
5. Material
6. Pressure rating
7. Catalog data
8. Pipe joining methods and equipment, including sp ecific procedures for fusion welding (pipe end cleaning, facing, joining, contro l of heating plate operation, documentation of jointing, debeading, etc.)
D. Shop Drawings: The CONTRACTOR shall submit detai led layouts and schematics describing the installation of all piping and fittings. The CONTRACTOR shall include site maps indicating all locations where butt-fusion welding work will occur, lay-down areas, pipe storage areas, insertion pits, and pulling pits.
E. Only technicians whom the pipe manufacturer or s upplier has certified and who have a minimum of (3) years of experience fusion welding 6 -inch or larger diameter pipelines and similar DR as that specified for this project o n a minimum of three projects shall operate fusion equipment. Submit documentation on t he technician's experience including a current (within the past three years) training certificate.
F. Certified reports for each fusion joint. Submit certified reports within 24 hours of making each joint. Joints for which proper records cannot be produced are subject to rejection.
Reports shall include the following minimum information that is clearly legible using both text and graphics as appropriate for the information presented:
1. Project name.
2. Pipe fusing contractor company name.
3. Make and model of fusing machine and data logger plus a unique identifier for the actual machines used, e.g., serial numbers.
4. Pipe data including size, dimension ratio, manuf acturer, plant identification and production date.
5. Date and time of day when fusing starts and ends .
6. Unique identifier for each joint that correlates with an identifier physically marked on the pipe wall.
7. Approximate stationing of joint at joint’s final installation location.
8. Name of fusing machine technician responsible fo r fusion of joint.
9. Both heater plate surface temperature and hydrau lic pressure vs. time. Time plot shall be concurrent for both temperature and pressure.
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10. Profiles at a number of locations sufficient to indicate that joining was correctly or incorrectly performed.
G. The CONTRACTOR shall furnish to the ENGINEER qua lity control records, as required herein.
PART 2 - PRODUCTS
2.1 GENERAL
A. Referenced pipe sizes are nominal pipe diameters .
B. All materials delivered to the job site shall be new, free from defects, and marked to identify manufacturer, material, class, and other appropriate information.
C. Acceptance of materials will be subject to stren gth and quality testing, in addition to inspection of the completed product. Acceptance of installed piping system will be based on inspection and leakage tests.
2.2 PIPING MATERIALS
A. Pipe shall be high density, high molecular weigh t polyethylene. The material shall be listed by the Plastic Pipe Institute (PPI) with a d esignation of PE 4710 and have a minimum cell classification of 445474C or higher as described in ASTM D3350. The pipe shall contain no recycled compound except that gene rated in the manufacturer's own plant from resin of the same specification from the same raw material pipe.
B. Pipe shall be homogeneous throughout and shall b e free of visible cracks, holes, foreign material, blisters, or other deleterious faults. It shall be uniform in density and other physical properties. Any pipe not meeting these criteria shall be rejected.
C. Pipe shall be made in conformance with ASTM F714 and ASTM D3261 as modified for the specified material. Pipe shall be minimum DR 17 with a minimum pressure rating of 125 psi at 73 degrees Fahrenheit.
D. The physical properties of the pipe and fittings material shall be as follows:
PROPERTY TEST METHOD VALUE
Density ASTM D 1505 >0.947-0.955 gm/cm 3
Melt Index ASTM D 1238 <0.15
Tensile Strength, Yield ASTM D 638 3,000 - <3,500 p si
Flexural Modulus ASTM D 790 110,000-160,000 psi
E. The pipe and fittings shall have a white or ligh t gray coloring on the interior. The exterior shall have a green stripe for in-ground identification as sewer pipe.
F. The high-density polyethylene pipe shall be prov ided by the following, or approved equal:
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1. Performance Pipe, Division of Chevron Phillips C hemical Co., LP, Houston, Texas
2. Isco Industries, Louisville, Kentucky
2.3 JOINTS
A. Joints in HDPE pipe shall be made using the ther mal butt-fusion method confirming to ASTM D2657 and shall be performed in strict accorda nce with the pipe manufacturer’s recommendations. Welding equipment shall be designe d for the specific purpose of permanently connecting HDPE pipes. This equipment shall be capable of squarely facing the pipe ends to be joined, properly heating each p ipe end to the temperature range specified by the pipe manufacturer, and applying an d sustaining the appropriate pressure, as recommended by the pipe manufacturer.
B. The butt-fusion welding machine shall be outfitt ed with a measuring and recording unit that documents the conditions existing during the f usion of each individual weld. A printout that includes the date and time each joint was made, the joint number, the initials of the machine operator, the plate temperature at the time of mating, the pressure during the heating cycle, the time period for the heating cycle, the pressure during the soak cycle, and the time period of the soak cycle shall be machine-generated and delivered to the ENGINEER at the end of each work shift. The recording unit shall be a DataLogger, as manufactured by McElroy Manufacturing, Inc., or approved equal.
C. Fusion equipment shall be operated by technician s who have been certified by a major gas public utility such as Pacific Gas and Electric or Southern California-Edison for operation of such equipment. Furthermore, all technicians performing butt-fusion welding on this project shall have a minimum of two (2) yea rs experience operating the same equipment used hereon.
D. Butt-fusion welding equipment shall be as follow s, or approved equal:
1. McElroy No. 412 Hydraulic Fusion Machine, McElro y Manufacturing, Tulsa, Oklahoma
2. Proweld Field 12 (315)-R, Asahi/America, Malden, Massachusetts
2.4 FITTINGS
A. The CONTRACTOR shall provide fabricated fittings where required. Fabricated fittings shall be of the same material as, and shall have a minimum pressure rating equal to, and shall be from the same manufacturer as the pipe material. If the fitting is in-line with the pipeline (i.e., a flange adapter), then the I.D . of the fitting shall be the same as the pipe. If the fitting is off-line (i.e., a tee), the n the fitting shall have an I.D. in accordance with the Contract Documents. Unless otherwise required, all fittings shall be butt-fusion welded.
B. Terminations to pipe or fittings made of other p ipe materials shall be made by using couplings.
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2.5 FLEXIBLE COUPLINGS
A. Flexible couplings shall be rubber, full-circle, clamp-on type conforming to ASTM C 425 and provided with two stainless-steel band, screw clamps to secure the coupling tightly to entering and exiting pipes. All screw-clamp hardware shall be Type 316 stainless steel.
Rubber material shall be suitable for sewage service.
2.6 WARNING TAPE
A. Install warning tape in accordance with Section 17, General Piping.
PART 3 - EXECUTION
3.1 HANDLING AND STORAGE
A. All pipe, fittings, etc., shall be carefully han dled and protected against damage, impact shock, free fall, and scoring. All pipe handling eq uipment shall be acceptable to the ENGINEER. Pipe shall be stored in a manner that pro tects the pipe against injury or damage. Stacking of polyethylene pipe will not be a llowed. All plastic materials should be stored out of direct sunlight.
B. The CONTRACTOR shall inspect each pipe and fitti ng prior to butt-fusion welding and again prior to installation. Any damaged pipe or fittings shall be repaired or replaced by the CONTRACTOR, at no additional expense to the CIT Y and to the satisfaction of the ENGINEER. Damage shall include, but not be limited to, gouges, cuts, or scratches of a depth greater than five percent (5%) of the pipe wall.
C. Prior to butt-fusion welding or installation, ea ch pipe or fitting shall be thoroughly cleaned of any foreign substance that may have collected th ereon and shall be kept clean at all times thereafter. The material used to clean the pi pe and fittings shall be as recommended by the pipe manufacturer.
3.2 BUTT-FUSION WELDING
A. Only technicians who have been certified in acco rdance with the requirements of paragraph 1.4.E shall be allowed to operate the butt-fusion welding equipment.
B. Butt-fusion welds shall be performed in accordan ce with manufacturer’s instructions. The butt-fusion welding procedures are summarized below:
1. Clean each pipe end with a clean cotton cloth to remove dirt, oil, grease, and other foreign materials.
2. Square (face) the mating surfaces of each of the pipes to be fused.
3. Bring the two (2) pipe ends together and adjust the pipe locations to ensure proper alignment.
4. Verify that the surface temperature of the heate r plate is between 375-400 degrees Fahrenheit and then clean the heater surface with a clean cotton cloth.
5. Insert the heater plate between the pipe ends, b ring the ends into firm contact with the heater plate without applying pressure, and achieve a proper melt pattern.
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6. After achieving the proper melt bead, remove the heater plate and quickly examine the pipe ends for complete melt.
7. Once complete melt has been accomplished, rapidl y bring the pipe ends together and apply pressure as recommended by the pipe manufacturer.
8. Hold the pressure constant and at the proper lev el throughout the cooling period, for the minimum time period recommended by the pipe manufacturer or as necessary to achieve proper cooling.
9. Do not backfill or expose pipe to water or any m edium that may accelerate cooling of the pipe until fused joints have reached ambient temperature. Joints shall not be loaded until they have properly cooled.
C. The CONTRACTOR shall mark each joint with the in dividual joint number, corresponding to the joint identification number appearing on the printout of the data logger attached to the butt-fusion welding machine. The printout shall be attached to the pipe near the joint for collection by the ENGINEER.
D. The CONTRACTOR shall remove both the internal an d external melt bead from the welded joint. Bead removal shall be accomplished in a manner that does not score or gouge the pipe.
3.3 INSTALLATION
A. HDPE pipe shall be used for pipe bursting applic ations only, unless indicated otherwise in the Contract Documents or approved by the ENGINE ER. The CONTRACTOR shall insert the pipe into the horizontal boring through properly prepared insertion and receiving pits, in accordance with the requirements of ASTM F 585.
B. The maximum pulling force that may be applied to any pipe shall be calculated as follows:
F = SA
where F = maximum pulling force on pipe (lb.)
S = maximum allowable stress (1000 psi)
A = cross-sectional area of pipe wall (square inc hes)
The cross-sectional area of the pipe wall shall be calculated as follows:
A = (D-t)t
where D = outside diameter (in)
t = minimum wall thickness (in)
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_________________________________________________________________________________________________________ Technical Provisions 2026 Sewer Lateral Replacemen t
Page TP-104 Project No. 1737
C. The CONTRACTOR shall take care not to drag the p ipe over rocks or rough surfaces that may damage the pipe. An appropriate pulling he ad shall be attached to the end of the pipe and shall be used for pulling the pipe at all times.
D. Manhole connections shall be made by attaching a collar to the end of the pipe and encasing the collar in the manhole wall using grout , in accordance with the Contract Documents. The collar shall not be used for pulling the pipe into the horizontal boring.
E. Following installation, the insertion and receiv ing pits, and any other excavations used, shall be backfilled in accordance with the requirements of Section 4, Earthwork.
3.4 TESTING
HDPE pipeline testing shall be performed in accordance with Section 12, Sanitary Sewer System Testing.
END OF SECTION
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_________________________________________________________________________________________________________ Technical Provisions 2026 Sewer Lateral Replacemen t
Page TP-105 Project No. 1737
SECTION 21 – SLURRY SEAL PAVEMENT SURFACING
PART 1 - GENERAL
1.1 SUMMARY
A. Work required under this section consists of fur nishing all labor, materials, tools, and equipment incidental to road restoration.
1.2 SUBMITTALS
A. The Contractor shall submit manufacturer data in cluding catalog cuts, drawings and samples, as appropriate, and letter(s) of complianc e as required by Special Provisions item number 31.
PART 2 - MATERIALS
2.1 SLURRY SEAL
A. Slurry seal shall be Type II conforming Section 37 - Bituminous Seals, of the latest requirements of Caltrans Standard Specifications.
PART 3 - EXECUTION
3.1 SLURRY SEAL
A. Slurry seal shall be placed in accordance with S ection 37 - Bituminous Seals, of the latest Caltrans Standard Specifications. Slurry sea l shall fully cure prior of traffic striping/marking placement.
B. Temporary traffic delineators (floppies, etc.) s hall be removed prior to slurry seal placement.
END OF SECTION
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_________________________________________________________________________________________________________ Technical Provisions 2026 Sewer Lateral Replacemen t
Page TP-106 Project No. 1737
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APPENDIX A
DAILY WORK REPORT
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EQUIPMENT AND LABOR
IDLE OR DOWN
DESCRIPTION
(Equipment or Labor)
NO.
PERSONS EQUIPMENT NO.
other remarks)
REMARKS
(Reason for Idleness or
WEATHER HOURS - ITEM NO.
Project:
Project No.:
CITY OF SAN CARLOS
DAILY INSPECTION REPORT
Report No.:
Date:
Day:
Shift Start: Stop:
REPORT INSPECTOR'S DAILY
Location and Description of Operation:
NOTES/COMMENTS:
PRINT NAME SIGNATURE TITLE
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APPENDIX B
CITY STANDARD DETAILS
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CITY OF SAN CARLOS, CALIFORNIA STANDARD DETAIL
The City of GoodLiving MANHOLE WALLS13STANDARD CONNECTION TO
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CITY OF SAN CARLOS, CALIFORNIA STANDARD DETAIL
The City of GoodLiving COVER AND FRAME14STANDARD MANHOLE
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APPENDIX C
LATERAL REPLACEMENT LIST
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# Location Estimated Full Length of
Lateral (LF) Depth Street / Easement Pipe Material Type of Repair Estimate
Approach
(Trench or Burst)
1 1086 Hewitt 35ft 7.5ft Street Cast/VCP Full Replacement Burst 2 1028 Hewitt 43ft 8ft Street Cast/VCP Full Replacement Burst 3 1632 Walnut 6.5ft 5ft Easement Cast/PE Full Replacement Trench 4 100 Fairbanks 18ft 2ft Street SDR/VCP Full Replacement Burst 5 1362 Orange 25.5ft 3ft Street Cast/VCP Full Replacement Burst 6 1304 Morse 28ft 3ft Street Cast/VCP Full Replacement Burst 7 796 Laurel 52ft 2ft (Wye) -
6.5ft (Tap) Street PE/VCP Full Replacement Burst
8 308 Torino 22.5ft 4ft Street Cast/VCP Full Replacement Burst 9 317 Sycamore 5ft 2ft Eastment Cast/VCP Full Replacement Trench 10 1341 St Francis 39.5ft 1ft (Wye) -
3ft (Tap) Street Cast/VCP Full Replacement Burst
11 183 Sunnydale 9ft 6ft Easement SDR/VCP Full Replacement Trench 12 124 Lyndhurst 13ft 2ft Street Cast/VCP Full Replacement Burst 13 1070 Tamarack 18.5ft 3.5ft Street SDR/VCP Full Replacement Burst 14 1351 Eaton 24ft 2ft Street Cast Full Replacement Burst 15 205 Hillcrest 4.5ft 2.5ft Easement PE Full Replacement Trench 16 764 Tramarack 36.5ft 2.5ft Street Cast/VCP Full Replacement Burst 17 725 Tamarack 15.5ft 4ft Street Cast/VCP Full Replacement Burst 18 1354 Cordilleras 33ft 3ft Street Cast/VCP Full Replacement Burst 19 887 Heather 48ft 6ft Street Cast/VCP Full Replacement Burst 20 2114 Howard 55ft 2.5ft Street Cast/VCP & PE @ Tap Full Replacement Burst 21 3144 Brittan 30.5ft 7ft Street Cast/VCP Full Replacement Burst 22 916 Elm 33ft 2fr Street SDR Riser and Wye to ABS to VCP Full Replacement Burst 23 925 Elm 2ft 25ft Street SDR Riser and Wye to VCP Full Replacement Burst 24 937 Elm 1ft 31ft Street SDR Riser and Wye to ABS to VCP Full Replacement Burst 25 945 Elm 35ft 2ft Street SDR riser and Wye to ABS Full Replacement Burst 26 1455 Alameda de las
Pulgas 22ft 5ft Street Cast/VCP Full Replacement Burst
27 1070 Crestview 53ft 5ft Street Cast/VCP Full Replacement Burst 28 2032 Greenwood 23ft 2.5ft Street Cast/VCP Full Replacement Burst 29 2049 Greenwood 44.5ft 3ft Street SDR Riser and Wye to VCP Full Replacement Burst 30 1902 San Carlos Ave 20ft 2.5ft Street SDR Riser and Wye to PE Full Replacement Burst 31 1220 Oak 57ft 2ft Street Cast/VCP Full Replacement Burst 32 552 Alameda de las
Pulgas 25ft 3ft Street Cast/VCP Full Replacement Burst
33 995 Crestview 60ft 6.5ft Street Cast/VCP Full Replacement Burst Appendix C - 2026 Lateral Replacement List
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CITY COUNCIL
STAFF REPORT
MEETING DATE: April 13, 2026
ITEM TITLE: Adopt a Resolution Approving the Plans and Specifications for the Library Elevator Upgrade Project (C2518) and Authorizing a Call for Bids.
RECOMMENDATION:
Staff recommend that the City Council adopt a Resolution approving the plans and specifications for the Library Elevator Upgrade Project (C2518) (“Project”) and authorizing a call for bids.
FISCAL IMPLICATIONS:
There are no fiscal implications, and no additional funding is needed.
The Project is funded by C2518, which was adopted by City Council on September 8, 2025, and approved the use of library excess funds in fiscal year (FY) 2025-26, in accordance with the San Mateo County Libraries (SMCL) Joint Powers Authority (JPA) agreement and appropriated $300,000 from the General Capital Fund (Fund 25) for the Project.
The engineer’s estimate is approximately $400,000. If bids received are greater than project funds available, staff will request additional appropriation at the time of awarding the contract and will pursue approval through the regular channels with SMCL.
BACKGROUND:
The San Carlos Library elevator requires an upgrade due to its age and lack of more modern components that offer improved efficiency, functionality, and design. Updating the Library elevator will provide a more comfortable and user-friendly experience for library patrons and staff, while aligning with the City’s broader efforts to invest in long-term improvements to public facilities. This project supports the continued upkeep and modernization of infrastructure in a high-use community space.
The planned improvements include the replacement of the interior cab controls, hall stations (call buttons and indicator lights), lantern lights, and the tank unit controller located in the elevator machine room. In addition, the elevator cab interior will be updated with new panels, lighting, and flooring. All work will be coordinated to ensure minimal disruption to library operations while modernizing the elevator’s performance and appearance.
Staff retained Salas O’Brien Engineers, Inc. (“Consultant”) to provide the elevator upgrade design services and prepare the construction documents. The construction documents are now complete to the satisfaction of the City Engineer.
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Staff and the Consultant collaborated with library and maintenance staff during the preparation of construction documents to ensure the improvements meet the needs of library staff and users.
ANALYSIS:
The final bid set construction documents were signed by the City Engineer on March 27, 2026.
The bid opening date is tentatively scheduled for May 7, 2026 at 9:30 am. The award of the Project is tentatively scheduled for the June 8, 2026 City Council meeting.
Staff recommend that the City Council adopt a Resolution approving the plans and specifications for the Library Elevator Upgrade Project (C2518) and authorizing a call for bids.
ALTERNATIVES:
The alternatives available to the City Council include:
1. Adopt a Resolution approving the plans and specifications for the Library Elevator Upgrade Project (C2518) and authorizing a call for bids; or
2. Do not adopt the Resolution; or
3. Provide staff with alternative direction.
Respectfully submitted by:
Steven Machida, Public Works Director
Approved for submission by:
____________________________
Nil Blackburn, Interim City Manager
ATTACHMENT(S):
1. Resolution
2. Library Elevator Upgrade Project (C2518) Plans
3. Library Elevator Upgrade Project (C2518) Specifications
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RESOLUTION NO. 2026 – ____
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SAN CARLOS
APPROVING THE PLANS AND SPECIFICATIONS FOR THE LIBRARY ELEVATOR UPGRADE PROJECT (C2518) AND AUTHORIZING A CALL FOR BIDS.
WHEREAS, the San Carlos Library (“Library”) elevator requires an upgrade due to its age and lack of more modern components that offer improved efficiency, functionality, and design; and
WHEREAS, updating the Library elevator will provide a more comfortable and user- friendly experience for library patrons and staff, while aligning with the City’s broader efforts to invest in long-term improvements to public facilities; and
WHEREAS, staff retained Salas O’Brien Engineers, Inc. (“Consultant”) to provide the elevator upgrade design services and prepare the construction documents. The design documents are now complete to the satisfaction of the City Engineer; and
WHEREAS, staff and the Consultant collaborated with library and maintenance staff during the preparation of construction documents to ensure the improvements meet the needs of library staff and users; and
WHEREAS, the final bid set construction documents were prepared and signed by the City Engineer on March 27, 2026; and
WHEREAS, the tentative bid opening date is May 7, 2026 at 9:30 a.m. and award of the Project is tentatively scheduled for the June 8, 2026, City Council meeting; and
WHEREAS, staff recommend approving the plans and specifications and authorizing a call for bids for the Project.
NOW, THEREFORE BE IT RESOLVED, that the San Carlos City Council approves the plans and specifications for the Library Elevator Upgrade Project (C2518) and authorizes a call for bids. * * * * *
I, City Clerk Crystal Mui, hereby certify that the foregoing Resolution was duly and regularly passed and adopted by the City Council of the City of San Carlos at a scheduled meeting thereof held on the 13th day of April 2026, by the following vote:
________________________________
CITY CLERK of the City of San Carlos
APPROVED:
___________________________
MAYOR of the City of San Carlos
AYES, COUNCILMEMBERS:
NOES, COUNCILMEMBERS:
ABSENT, COUNCILMEMBERS:
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action.
The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE610 ELM STREET, SAN CARLOS, CA 94070 G-0.0COVER SHEET 1
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. G-0.1COVER SHEET 2
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. G-0.22025 CALIFORNIA GREEN CODE STANDARD FORM3
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. G-0.32025 CALIFORNIA GREEN CODE STANDARD FORM4
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. G-0.42025 CALIFORNIA GREEN CODE STANDARD FORM5
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. G-0.52025 CALIFORNIA GREEN CODE STANDARD FORM6
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“ ”
“ ”
“”
DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-0.1ELECTRICAL GENERAL NOTES, SYMBOLS & ABBREVIATIONS7
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-1.1ELECTRICAL BASEMENT PLAN8
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-4.1ELECTRICAL BASEMENT MACHINE ROOM, PIT AND ELEVATOR SHAFT PLANS9
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Appropriate PPE Required. Do notoperate controls or open covers withoutappropriate personal protectionequipment; Failure to comply mayresult in injury or death. Refer to NFPA70E for minimum PPE requirements.
ARC FLASH ANDSHOCK HAZARDWARNING
System No. W-J-5031F Rating - 1, 2, 3 & 4 Hr (See Item 1)T Rating - 1, 2 & 3 HrConcrete Blocks* Pipe Covering*
Fill, Void or Cavity Material*
Passive Fire Protection Partners*** **
DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-5.1ELECTRICAL DETAILS 10
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-5.2ELECTRICAL DETAILS 11
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. E-6.1ELECTRICAL PANEL SCHEDULES & LOAD CALCULATIONS12
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DEPARTMENT OF PUBLIC WORKSSAN CARLOS, CALIFORNIA
C2518 - LIBRARY ELEVATOR UPGRADE
PROJ. MGR.: WASSIM BASHACHECKED BY: JEFFRY GOSALDRAWN BY: -PROJECT ID: C251801/14/2026CITY OF SAN CARLOS DEPARTMENT OF PUBLIC WORKS Hz SCALE: AS NOTEDVt SCALE: AS NOTED Drawing No.The City of GoodLiving
CITY OF SAN CARLOSCALIFORNIALIBRARY ELEVATOR UPGRADE
Sheet of 13
CITY OF SAN CARLOS LIBRARY610 ELM STREET, SAN CARLOS, CA 94070600 ELM ST, SAN CARLOS, CA 94070Engineered for Impact 305 South 11th StreetSan Jose, California 95112-2218877.725.2755 | 877.925.1477 (f)WWW.SALASOBRIEN.COMNational Strength.Local Action. ·
···
E-7.1ELECTRICAL PARTIAL SINGLE LINE DIAGRAM13
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CITY OF SAN CARLOS
SAN MATEO COUNTY, CALIFORNIA
Public Works Department
600 Elm Street
San Carlos, CA 94070
Contract Documents
For the
Library Elevator Upgrade Project
CITY PROJECT NO: C2518
BID OPENING: May 7, 2026 at 9:30 a.m.
BID SET
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Library Elevator Upgrade Project
City Project No. C2518
D
ESIGN CERTIFICATION
The Plans and Technical Specifications contained herein have been prepared by, or under the responsible charge of, the following registered person(s):
Prepared by:
___________________________________________________________ Jeffry Gosal, P.E., PRINCIPAL Date
Salas O’ Brien
305 S 11
th St, San Jose, CA 95112
(408) 282-1500
Approved for Construction:
___________________________________________________________ GRACE LE, P.E., CITY ENGINEER Date
Public Works Department
City of San Carlos
600 Elm Street, San Carlos, CA 94070
(650) 802-4201
1 03/27/26
3/27/2026
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v
TABLE OF CONTENTS
A. INTRODUCTORY PAGES
Title Page No.
Cover Page i
Design Certification
Table of Contents
iii
v
Notice Inviting Sealed Proposals vii
Instructions to Bidders x
Schedule of Required Bid Documents and Agreement Fo rms xii
B. BID PROPOSAL
Bid Proposal Cover Page P-1
Bid Proposal Table of Contents P-2
Bid Proposal P-3
Bidding Requirements P-4
Bid Schedule P-6
Designation of Subcontractors P-8
Department of Industrial Relations Registration Requirement P-8 Certifications and Affidavits
Non-Collusion Affidavit P-9
Bidder’s Qualifications P-10
Bidder’s References P-11
Signature Pages P-12
Bidder’s Bond P-14
C. AGREEMENT AND AGREEMENT FORMS
Agreement and Agreement Forms Table of Contents A-1
Public Project Agreement A-2
Exhibit A – Contractor’s Bid Proposal A-12
Exhibit B – Insurance Coverage Form A-13
Resolution of Construction Claims A-14
Agreement Forms
Payment Bond A-16
Performance Bond A-18
Workers Compensation Certification A-20
Certification of Safety Requirements for Contractors and Vendors A-21 Drug-Free Workplace Certification A-22
Escrow Agreement for Security Deposits in Lieu of Retention (Optional) A-23 Guarantee A-25
D. GENERAL PROVISIONS
Section 1 Terms and Definitions GP -1
Section 2 Proposal Requirements and Conditions GP-5
Section 3 Review of Bids, Contract Award and Execution GP-8 Section 4 Scope and Control of the Work GP-13
Section 5 Changes of Work GP-20
Section 6 Control of Materials GP-24
Section 7 Utilities GP-27
Section 8 Prosecution and Progress GP-30
Section 9 Responsibilities of the Contractor GP-39
Section 10 Measurement and Payment GP-54
Section 11 Guarantee GP-60
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E. SPECIAL PROVISIONS
Section 1 Description of Work SP -1
Section 2 Location SP -1
Section 3 Qualification of Bidders SP -1
Section 4 Day and Hours of Operation SP -1
Section 5 Control of Work SP -5
Section 6 Licenses and Permits SP -5
Section 7 Safety and Health Regulations SP -5
Section 8 Safety of Persons and Property SP -6
Section 9 Staging / Construction Area SP -7
Section 10 Contractor’s Plant and Equipment SP -7
Section 11 Traffic Control SP -7
Section 12 Stormwater Pollution Prevention SP -10
Section 13 Water SP -10
Section 14 Power SP -11
Section 15 Dust Control SP -11
Section 16 Cleanup SP -11
Section 17 Clearing and Grubbing SP -12
Section 18 Protection and Restoration of Existing Improvements SP -12 Section 19 Existing Utilities SP -13
Section 20 Utility Coordination SP -14
Section 21 Obstructions SP -14
Section 22 Maintenance of Sewer Service SP -15
Section 23 Resealing of Manholes SP -15
Section 24 Protection of Public Safety SP -15
Section 25 Surcharging of Manholes SP -15
Section 26 Contractor -Related Blockage SP -15
Section 27 Notification of Residents and Merchants SP -16 Section 28 Owner / Contractor Meetings SP -16
Section 29 Record Drawings / Corrected Sewer Maps SP -17 Section 30 Construction Schedule SP -17
Section 31 Daily Work Reports SP -17
Section 32 Submittals SP -17
F. RESERVED – NOT USED
G. TECHNICAL PROVISIONS
Section 142400 Hydraulic Elevators 38 pgs.
H. APPENDICES
Appendix A Daily Work Report
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If you require translation for this notice, please contact the City Clerk’s Office at 650-802-4222.
CITY OF SAN CARLOS
SAN MATEO COUNTY, CALIFORNIA
NOTICE INVITING SEALED PROPOSALS
NOTICE IS HEREBY GIVEN that sealed proposals or bids for the Library Elevator Upgrade Project No.
C2518 shall be publicly opened, examined and announced on Thursday, May 7, 2026, at 9:30 a.m. at the San Carlos City Clerk’s Office at City Hall – 600 Elm Street, San Carlos, CA 94070. Sealed bid proposals shall be received in-hand by the City Clerk before the bid opening date and time. No Pre-Bid meeting has been scheduled for this project.
A Class B, General Building Contractor License, is required for this work. The successful bidder, as the prime General Contractor, shall be responsible for performing or subcontracting all work in accordance with the Contractor’s State License Board licensing requirements. Specifically, all elevator modernization work must be performed by a properly licensed C-11 Elevator Contractor, and associated electrical work must be performed by a properly licensed C-10 Electrical Contractor. Work will be done and payments will be made in accordance with provisions more particularly described in the plans and specifications.
The scope of work generally includes, but not limited to, elevator modernization, fire alarm equipment and electrical work to upgrade the City of San Carlos Library elevator. Bids are required for the entire work described herein in accordance with the instructions to bidders. The Engineer’s Estimate is approximately $400,000.
Bids must be accompanied by a Proposal guarantee amounting to ten (10%) percent of the bid as described in the specifications. Said guarantee shall be forfeited to the City in case the bidder depositing the same does not, within fifteen days after written notice that the contract has been awarded to the contractor (1) enter into a contract with the City and (2) furnish Performance and Payment Bonds as described in the specifications.
The City Council reserves the privilege of rejecting any and all proposals or to waive any irregularities or informalities in any proposals or in the bidding. No bidder may withdraw their proposal for a period of ninety (90) calendar days after the date set for opening of proposals.
As a “Public Works” project and pursuant to Section 1773 of the Labor Code, the general prevailing wage rates for San Mateo County shall apply to this contract, as determined by the Director of the California Department of Industrial Relations.
Plans and specifications, forms of proposals, bonds and contracts may be inspected or obtained from ARC Document Solutions at 829 Cherry Lane, San Carlos, CA 94070, (650) 631-2310; email at sancarlos@e- arc.com; or visit the City of San Carlos Website at www.cityofsancarlos.org. Bidders must register with ARC Document Solutions to obtain further information.
Bidders are directed to the Instructions for Bidders for additional contract requirements.
Crystal Mui, City Clerk
Published: April 16 and 22, 2026
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CITY OF SAN CARLOS
SAN MATEO COUNTY, CALIFORNIA
INSTRUCTIONS TO BIDDERS
1. Proposal Requirements: Bidder's attention is di rected to the General Provisions of these Specifications for the requirements and conditions which must be adhered to in the preparation of the proposal form and submission of this proposal.
2. Receipt of Bids and Bid Opening: Proposals shal l be received at the office of the City Clerk, 600 Elm Street, San Carlos, CA 94070, not later than the bid deadline described in the Notice Inviting Sealed Proposals. Proposals shall be submitted in a sealed envelope, plainly marked on the outside “Library Elevator Upgrade Project, City Project No. C2518 ”.
All sealed bid proposals will be opened at 9:30 a.m. on Thursday, May 7, 2026.
Sealed bids and proposal forms will be examined and declared on the same day by the City Clerk.
3. Time of Completion and Liquidated Damages: All work shall be diligently prosecuted to completion before the expiration of three hundred (300) Calendar Days from the date of receipt of the “Notice to Proceed”. The Contractor shall complete all submittals, shop drawings, product data, samples, procurement of mat erials and equipment, and any required reviews/approvals within One hundred and sixty five (165) Calendar Da ys from the date of receipt of the “Notice to Proceed” . Any time used for submittals, review, and procurement beyond this 165-calendar-day limit shall not extend the overall contract completion time unless approved in writing by the C ity through a formal change order. If the Contractor fails to complete the work within th e above-specified time limit of 300 Calendar Days, the Contractor shall pay liquidated damages to the City, computed at the rate of Five Hundred Dollars ($500) for each calendar day beyond the specified time limit until the project is completed.
4. Bid Security: Pursuant to California Public Con tract Code Section 20170, each proposal shall be accompanied by a bid security in the form of cash, cashier’s or certified check, or bidder’s bond made payable to the “City of San Carlos” for an amount equal to at least ten percent (10%) of the Bid Amount and no bid shall be considered unless such security is enclosed therewith.
5. Bid Guarantee: No bid shall be withdrawn except as provided for pursuant to Public Contract Code Section 5103, and the bidder shall gu arantee the Total Bid Price for a period of ninety (90) calendar days from the date of the bid opening.
6. Contractor’s License: Bidders are to be license d in accordance with the provisions of the “Contractor’s License Law,” Chapter 9 of Division 3 of the State Business and Professions Code. In addition, at the time of submitting the b id, bidder must have the following classification of contractor’s license : Class B, General Contractor’s License, Class C10 – Electrical Subcontractor and Class C-11 – Elevator Subcontractor
7. Additional Registration and Licensing Requiremen ts: In accordance with Labor Code Section 1725.5, Contractor and all Subcontractors s hall be registered with the California Department of Industrial Relations (DIR) as a condi tion of being listed on the proposal form. All 2 nd and lower tier subcontractors working on the project shall be registered with
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the Department of Industrial Relations prior to the work being performed. Contractor and all Subcontractors shall also obtain a City busines s license prior to the work being performed.
8. Prevailing Wage: The work contemplated by this contract is a “public work” subject to prevailing wages under California Labor Code Sectio n 1770 et. seq. The successful bidder will be required to pay not less than the pr evailing rate of per diem wages as determined by the California Department of Industrial Relations or Federal Minimum Wage Rates as determined by the United States Secretary of Labor in effect on the date the work is performed.
9. Bonds and Insurance: All contractors are requir ed to furnish to the City faithful performance, labor and materials, and 2-year warranty bonds and insurance, as required in the specifications.
10. Security Substitution: Pursuant to California Public Contract Code Section 22300, and at the request and expense of the Contractor to whom the Contract is awarded, securities of a value equivalent to the retention amount, in a fo rm approved by the City, shall be permitted in substitution for money withheld by the City to ensure performance under the Contract.
11. Pre-Bid Conference: No pre-bid conference has b een scheduled for this project.
12. Requests for Clarification and Project Communic ation: In the event the bidder has any questions as to the meaning of any part of the plan s and specifications, or if the bidder finds any error, inconsistency, or ambiguity in the Contract Documents, the bidder shall make a written request for clarification prior to s ubmitting its bid. All questions and comments regarding the plans and specifications sho uld be directed to the Project Manager indicated below and will only be responded to if received in writing at least five (5) working days before the bid opening. Questions received after this time and date may not be addressed.
City of San Carlos – Public Works Department
600 Elm Street, San Carlos, CA 94070
Attention: Wassim Basha, Project Manager (CSG Co nsultants) for City [email protected]
Telephone: (650) 436-7639
Public Works: (650) 802-4200
13. These “Instructions to Bidders” are hereby made a part of the Contract Documents.
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SCHEDULE OF REQUIRED
BID DOCUMENTS AND AGREEMENT FORMS
Submit with Bid Proposal - The following documents must be completed, signed a nd submitted as part of the Bid Proposal, prior to the bid opening:
Completed Bid Proposal consisting of:
A. Bid Schedule
B. Designation of Subcontractors
C. Certifications and Affidavits:
1. Non-Collusion Affidavit
2. Bidder’s Qualifications
3. Bidder’s References
4. Bidder’s Personnel
D. Signature Pages
E. Bid Guarantee (Bid Bond attached)
F. Addendum, if any (not attached) – signature page to be signed and submitted by bidder.
Submit Prior to Notice to Proceed -The following documents must be completed, signed and submitted after approval and award of the Contract, prior to the Notice to Proceed:
A. Agreement
B. Payment Bond
C. Performance Bond
D. Insurance Endorsements
1. General Liability
2. Automobile Liability
3. Worker’s Compensation
E. Certifications
1. Workers Compensation
2. Safety Requirements for Contractors and Vendors
3. Drug-Free Workplace
Submit Prior to Final Acceptance - The following documents must be completed, signed and submitted prior to final acceptance:
A. Guarantee
B. Stop Notice Releases, if any (form not included)
C. Record Drawings
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Bid Proposal Library Elevator Upgrade Project
Page P-1 Project No. C2518
CITY OF SAN CARLOS
PUBLIC WORKS DEPARTMENT
600 Elm Street
San Carlos, CA 94070
BID PROPOSAL
FOR:
Library Elevator Upgrade Project
City Project No. C2518
IN
CITY OF SAN CARLOS, COUNTY OF SAN MATEO
STATE OF CALIFORNIA
NOTE: All portions of all pages included within this section, and acknowledgement of receipt of any issued addenda must be properly completed, signed, and submitted with the bid. Failure to do so may result in the bid being deemed non-responsive by the City.
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BID PROPOSAL
TABLE OF CONTENTS
Bid Proposal Cover Page .............................................................................. ...... P-1 Bid Proposal Table of Contents ....................................................................... ... P-2
BID PROPOSAL PAGES TO BE SUBMITTED WITH BID:
Bid Proposal ......................................................................................... .............. P-3 Bidding Requirements ................................................................................. ....... P-4 Bid Schedule ...................................... ................................................... ............. P-6 Designation of Subcontractors ........................................................................ .... P-8 Department of Industrial Relations Registration Requirement ............................. P-8 Certifications and Affidavits
Non-Collusion Affidavit ............................................................................. .... P-9 Bidder’s Qualifications .............................................................................. .... P-10 Bidder’s References .................................................................................. .... P-11 Signature Pages ...................................................................................... ........... P-12 Bid Bond ............................................................................................ ................ P-14
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Page P-3 Project No. C2518
BID PROPOSAL
Library Elevator Upgrade Project
CITY PROJECT NO. C2518
Bid To: Honorable Mayor and City Council
City of San Carlos, City Hall
San Carlos, CA 94070
Bid From:
Bidder’s Company Name:
Contact Person:
Business Street Address:
City, State, Zip Code:
Phone No.: ( )
E-mail: __ __________________
Contractor License No.:
Contractor License Expiration Date: ____
Dear Mayor and Members of the City Council:
I, as bidder, declare that I have satisfied myself as to the actual conditions and requirements of the work by careful examination of the location of the proposed work, by examination of the plans and specifications including the Instructions to Bi dders, and by other measures, and that after submission of the bid, I will not dispute, complain or assert that there was any misunderstanding in regards to the nature or amount of work to be done.
I hereby certify that only those parties interested in this proposal as principals are named in this proposal and that this bid is genuine, and not sham, collusion, or made in the interest or in behalf of any person not named. I have not directly or in directly induced or solicited any other bidder, person, firm or corporation to put in a sham bid, o r refrain from bidding, and have not in any manner sought by collusion to secure for myself an advantage over any other bidder.
I agree that if this proposal is accepted, I will c ontract with the City of San Carlos in the form of agreement proposed, will provide all bonds and insu rance certificates as required by the agreement and will furnish all equipment and materi als and perform all the labor required to
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complete the work in accordance with the plans, specifications and other contract documents, for the unit or lump sum prices set forth in the Bid Schedule.
I have carefully checked all of the figures in the Bid Schedule and understand that the City shall not be responsible for any errors or omissions on my part in making up this bid. I agree that this bid may not be withdrawn for a period of ninety (90) calendar days from the date of the bid opening and that the City reserves the right to reject any or all bids, waive any informality in bids received, and may at its option make the award that in the judgment of the City is to the best interest of the City.
BIDDING REQUIREMENTS
The work to be done and referred to here is in the City of San Carlos, County of San Mateo, State of California, and shall be constructed in accordan ce with all provisions of the project specifications and project plans including: any add enda; the Instructions to Bidders, the Agreement; the Standard Specifications and Standard Plans of the California Department of Transportation, current edition; the Labor Surcharge and Equipment Rental Rates; and payment of not less than the higher of the prevailing rate of per diem wages as determined by the Director of the California Department of Industrial Relation s or Federal minimum wage rate as predetermined by the United States Secretary of Labor in effect on the date the work is performed.
For each of the various contract items of work desi gnated on the Bid Schedule, the bidder shall set forth a unit or lump sum price which the bidder shall then use to calculate and designate a total cost for each item of work based upon the des ignated estimate of the quantities of work to be done, all in clearly legible figures in the resp ective spaces of the Bid Schedule provided for this purpose.
The bidder shall include in the unit or lump sum prices paid for the various contract items of work full compensation for conforming to the requirement s of the Contract Documents and for completing all of the work required. No additional compensation shall be granted for any additional items unless categorized and approved as extra work under the terms of the agreement.
The estimate of construction quantities set forth i n the Bid Schedule is approximate only, being given only as a basis for the comparison of bids, and the City does not expressly or by implication agree that the actual amount of work will correspon d with those estimated quantities. The City reserves the right to increase the amount of any class or portion of the work or to omit portions of the work as may be deemed necessary or expedient by the Engineer. There shall be no claim for damage or loss of anticipated profit for any bi d item omitted in its entirety, and payment will only be made on the basis of actual quantities of work performed.
If the City accepts this proposal and the bidder fails to enter into the contract and/or fails to furnish bonds as required by the specifications with sureti es satisfactory to the City within ten (10) calendar days after the bidder has received notice from the City that the contract has been awarded, the City may, at its option, determine that the bidder has breached and abandoned the contract, and thereupon, the bid security accompany ing this proposal shall be forfeited and become the property of the City.
The Notice to Proceed will not be issued until afte r the contract has been fully executed. The contractor shall commence the work under the contract within ten (10) days following the date of the Notice to Proceed, or as otherwise specified in the project specifications or negotiated with
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the City, and shall diligently prosecute the projec t to completion within the time specified. The contract completion period is inclusive of the time needed for material delivery.
Bidder shall comply with the requirements of the Ca lifornia Labor Code, including sections 1770 et seq. , and pay not less than the prevailing rate of per diem wages as determined by the Director of the California Department of Industrial Relation s. Copies of such prevailing rate of per diem wages are on file at the office of the City Enginee r, which copies shall be made available to any interested party upon request. The Contractor shall post a copy of such determination at the job site.
As required by Section 6705 of the California Labor Code and in addition thereto, for any excavation of any trench or trenches five feet (5’) or more in depth, the Contractor shall submit to the Engineer for acceptance, a detailed plan showin g the design of shoring, bracing, sloping, or other provisions to be made for worker protection f rom the hazard of caving ground during the excavation of such trench or trenches. Structural calculations prepared, stamped and signed by a Registered Engineer licensed to practice in the State of California shall accompany the plan to verify the structural safety and adequacy of the sh eeting, shoring and bracing to be used on the project. No such plan shall allow any shoring, slo ping or a protection system less effective than that required by the Construction Safety Orders of the State Division of Occupational Safety and Health.
In accordance with the provisions of Section 1860 of the Labor Code, prior to performing work on the Contract, each Contractor to whom a public works contract is awarded shall sign and file with the City the Worker’s Compensation Certification in cluded in the “Agreement and Agreement Forms” section of these specifications.
Bidder’s attention is directed to Section 2 of the General Provisions for additional information and requirements pertaining to the submission of a bid, and which is incorporated here by reference.
Bidder’s attention is directed to Section 2.13, “Re quired Contractor and Subcontractor Registration,” of the General Provision. All contr actors shall register with the Department of Industrial Relations according to Labor Code Section 1725.5.
Any protest of the proposed contract award must be submitted in writing to the City no later than 5:00 p.m. on the fifth business day following the date of the bid opening. Bidder is directed to the “Bid Protest Procedure” Section of the General Provisions for additional information.
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BID SCHEDULE
Bids are to be submitted for the entire work. All applicable sales taxes, state and/or federal, and any other special taxes, patent rights or royalties are included in the prices quoted in the bid.
In the case of a discrepancy between the product of the “Estimated Quantity” and the “Unit Price” with the “Item Total”, the product of the “Estimated Quantity” and the “Unit Price” shall prevail and the figure shown as the “Item Total” shall be adjus ted accordingly, except as provided in cases involving (a) or (b) below:
(a) If the amount set forth as a unit price is unreadable or otherwise unclear, or is omitted, or is the same as the amount entered in the item total column, then the amount set forth in the item total column for the item shall prevail and sh all be divided by the estimated quantity for the item and the price thus obtained shall be the unit price;
(b) (Decimal Errors) If the product of the entered unit price and the estimated quantity is exactly off by a factor of ten, one hundred, etc., or one-tenth, or one-hundredth, etc. from the item total, the discrepancy will be resolved by usi ng the entered unit price or item total, whichever most closely approximates percentage-wise the unit price or item total in the Engineer’s Estimate.
If both the unit price and the item total are unreadable or otherwise unclear, or are omitted, the bid may be deemed irregular. Likewise if the item total for a lump sum item is unreadable or otherwise unclear, or is omitted, the bid may be deemed irregular unless the project being bid has only a single item and a clear, readable total bid is provided.
In the case of a discrepancy between the sum of the figures in the item total column (adjusted per the previous paragraphs, if necessary) and the amount set forth as the total base bid amount, the sum of the figures in the item total column shall p revail and the amount shown as the total base bid amount shall be adjusted accordingly.
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BASE BID ITEMS ARE AS FOLLOWS:
Library Elevator Upgrade Project
CITY PROJECT NO. C2518
Item
No.
Item
Description
Estimated
Quantity
Unit
Item
Total
1 Mobilization & Demobilization 1 LS $
2 Elevator Work 5 1 LS $
3 Electrical And Fire Alarm Work 1 LS $
4 Testing 5 1 LS $
5 Miscellaneous 1 LS $
Total Base Bid Amount: $___________________
Notes:
1. The Contract will be compared and awarded on the basis of the Total Base Bid Amount.
2. All items on the Base Bid Schedule must be bid. Partial bids will not be accepted.
3. The City reserves the right to reject all bids f or any reason whatsoever.
4. Issuance of the “Notice to Proceed” will constitut e the beginning of the Contract.
5. Bid item 2 (“Elevator Work”) and bid item 4 (“Te sting”) are designated as a specialty item. The value of this specialty item shall not be used to calculate the percentage of the prime contractor’s portion of work for the purpose of determining the amount of work to be performed by the prime contractor with its own forces.
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DESIGNATION OF SUBCONTRACTORS
The Contractor shall perform work equaling at least 30 percent of the value of the original total bid with the Contractor’s own employees and equipment, owned or rented, with or without operators.
In accordance with the Subletting and Subcontractin g Fair Practices Act, Public Contract Code sections 4100 et seq . (the “Subcontracting Act”), the Bidder hereby cer tifies and submits, as required by law, the following concerning subcontractors:
1. The portion of the work, which will be done by e ach such subcontractor; and
2. The name and location of the place of business of each subcontractor who will perform work or labor, fabricate a portion of the work or improv ement according to detailed drawings in the project plans, or render service to the Contractor in or about the construction of the work in an amount in excess of one-half of one percent (0.5%) of the Contractor’s total bid.
Portion of Work to be
Performed by Subcontractor
Subcontractor Name,
Address and License Number
(License No. Required under AB 44)
Registered
with DIR?
check if yes
Amount ($)
1. 2.
3. 4.
5. 6.
7. (For additional Subcontractors, attach copies of this sheet as necessary) NOTE : T HIS CERTIFICATE MUST BE COMPLETED AND RETURNED ALONG WITH THE CONTRACTOR ’S BID PROPOSAL .
DEPARTMENT OF INDUSTRIAL RELATIONS REGISTRATION REQUIREMENT In accordance with Labor Code Section 1725.5, all c ontractors and subcontractors listed on a public works bid proposal must be registered with the DIR.
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NON-COLLUSION AFFIDAVIT
Title 23 United States Code Section 112 and
Public Contract Code Section 7106
State of California )
) ss.
County of _______________ )
(name of person signing affidavit), being f irst duly
sworn, deposes and says under penalty of perjury un der the laws of the State of California, that the person has the right, power, legal capacity, and authority to execute this Affidavit as (sole owner, partner, president, secretary, etc) of
(legal name of Bidder), the Bidder, that t he
Bid is not made in the interest of, or on behalf of, any undisclosed person, partnership, company, association, organization, or corporation; that the Bid is genuine and not collusive or sham; that the Bidder has not directly or indirectly induced or solicited any other Bidder to put in any false or sham Bid, and has not directly or indirectly collud ed, conspired, connived, or agreed with any Bidder or anyone else to put in a sham Bid, or that anyone shall refrain from Bidding; that the Bidder has not in any manner, directly or indirectl y, sought by agreement, communication, or conference with anyone to fix the Bid price of the Bidder or any other Bidder, or to fix any overhead, profit, or cost element of the Bid price, or of that of any other Bidder, or to secure any advantage against the public body awarding the Cont ract or anyone interested in the proposed Contract; that all statements contained in the Bid are true; and, further, that the Bidder has not, directly or indirectly, submitted his Bid price or any breakdown thereof, or the contents thereof, or divulged information or data relative thereto, or paid, and will not pay, any fee to any corporation, partnership, company association, organization, Bid depository, or to any member or agent thereof to effectuate a collusive or sham Bid.
IN WITNESS WHEREOF, the undersigned, as bidder, rep resent and warrant that they have the right, power, legal capacity, and authority to ente r into and execute this document on behalf of the Bidder, and have executed this document by setting hereto their names, titles and signature.
(Signature of Representative of Bidder)
Subscribed and sworn to before me, a Notary Public in and for the State of California,
County of _____________________, this ______ day of _________________, 20____.
Signature of Notary Public:________________________
My Commission expires __________________, 20_____ (Seal)
NOTE : T HIS AFFIDAVIT MUST BE COMPLETED AND RETURNED AS PART OF THE CONTRACTOR ’S BID PROPOSAL .
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BIDDER’S QUALIFICATIONS
The following statements as to the financial qualifications and experience of the Bidder are submitted as a part of this Bid and the Bidder guarantees the truthfulness and accuracy of the information. Pursuant to Public Contract Code 10165, financial statements and experience questionnaires are not public records and are not open to public inspection.
Financial Data
Reference is hereby made to the following bank or b anks as to the financial responsibility of the bidder.
NAME OF BANK ADDRESS
Experience Data
The Bidder has been engaged in the contracting business, under the present business name for ________ years. Experience in work of a nature sim ilar to that covered in this Bid extends over a period of __________ years.
The Bidder as a Contractor has never failed to sati sfactorily complete an awarded contract from a governmental entity, except as follows: (Name all exceptions and reasons therefore):
Bidder’s Personnel
The following is a list of key personnel including an listing of the person’s knowledge, ability or trade along with a brief description of their experience. If Bidder is awarded the Contract, it is understood that the work will be directed and actively supervised by one of these persons.
List of Personnel Knowledge/Skills Experience
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BIDDER’S REFERENCE
List three (3) major projects which the Bidder has performed comparable work within the last three (3) years. Provide a contact person and description of the project, or other such information that will demonstrate the ability to vigorously prosecute the work.
1. PROJECT NAME LOCATIO N YEAR COMPLETED
AGENCY CONTACT PERSON TEL EPHONE NO. FINAL CONSTRUCTION COST
BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION
2. PROJECT NAME LOCATIO N YEAR COMPLETED
AGENCY CONTACT PERSON TEL EPHONE NO. FINAL CONSTRUCTION COST
BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION
3. PROJECT NAME LOCATIO N YEAR COMPLETED
AGENCY CONTACT PERSON TEL EPHONE NO. FINAL CONSTRUCTION COST
BRIEF DESCRIPTION OF THE WORK AND/OR MANNER OF EXECUTION
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SIGNATURE PAGES
The terms and conditions of the final contract when executed shall control and supersede anything herein to the contrary or inconsistent with such contract.
The bidder has inspected the site of the propose work in order to satisfy the bidder, by personal examination, or by such other means as the bidder prefers, of the location of the proposed work and as to the actual conditions of and at the work site. The bidder hereby offers to furnish all labor, materials, equipment, transportation, and services necessary to complete the work on this project in accordance with the Contract Documents and to complete all requirements of the Contract Documents for the sums quoted in this Bid.
Addenda:
(if any) bidder has received and examined all addenda issued during the bid period and agrees that all addenda shall be made a part of the Contract Documents. The bidder acknowledges receipt and incorporation of all impacts resulting from all addenda issued by inserting the number of each addendum below OR by signing and submitting with the bid proposal the signature page from each addendum.
Addendum Nos. _____, _____, _____, _____, _____, _____, _____, _____
Bidder’s Guarantee:
In accordance with Public Contract Code Section 20170, accompanying this Bid is _______________ (insert the word “Cash”, “Cashier’s Check”, “Certified Check” or “Bidder’s Bond” as the case may be) made payable to the City of San Carlos in the amount of ___________________________________________________($_______________) equal to at least ten percent (10%) of the total amount of this bid. This amount is given as a guarantee that, in case the undersigned defaults in executing a contract and/or furnishing the necessary bonds after contract award, the said guarantee and the money payable thereon shall become and remain the property of the City as liquidated damages.
Company Profile:
The names of all persons interested in the foregoing bid as principals are as follows:
(Note: If bidder or other interested person is a corporation, state the legal name of corporation, also names of the president, secretary, treasurer and manager thereof; if partnership, state true name of firm, also names of all individual partners composing firm; if bidder or other interested person is an individual, state first and last name in full).
Firm Name:
Business Address:
Names and Titles of Company Officers:
1. 2.
3. 4.
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Proposal Execution:
IN WITNESS WHEREOF, the undersigned, as bidder, represent and warrant that they have the right, power, legal capacity and authority to enter into and execute this document on behalf of the Bidder, and have executed this document by setting hereto their names, titles, and signatures. The representations made herein, including but not limited to the above contractor’s license, expiration date and name of bidder, are true and correct, shall be complied with and are made under penalty of perjury.
IF SOLE OWNER , sign here:
I sign as sole owner of the business named above.___________________________
Social Security Number:_________________________________________________
Employer Identification Number:___________________________________________
IF PARTNERSHIP , sign here:
The undersigned certify that we are partners in the business named above and that we sign this contract proposal with full authority to do so. (one or more partners sign)
______________________________________________________________________
______________________________________________________________________
Federal Tax Identification No. (EIN):_________________________________________
State Tax Identification No.:_______________________________________________
IF CORPORATION , execute here:
The undersigned certify that they sign this contract proposal with full and proper authorization to do so.
Corporate name _________________________________________________________
By_____________________________________ (Title) _________________________
By_____________________________________ (Title) _________________________
Incorporated under the laws of the State of ___________________________________
Federal Tax Identification No. (EIN):_________________________________________
State Tax Identification No.:_______________________________________________
Subscribed and sworn to before me, a Notary Public in and for the State of California,
County of _____________________, this ______ day of _________________, 20____.
Signature of Notary Public:________________________
My Commission expires __________________, 20_____ (Seal)
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BIDDER’S BOND
To Accompany Contract Proposal
KNOW ALL PERSONS BY THESE PRESENTS:
That we, the undersigned _________________________________________, as principal and
__________________________________, as surety, are held and firmly bound unto the City of San Carlos as OWNER in the penal sum of TEN PERCENT (10%) of the total amount of the bid of the principal, for the payment of which, well an d truly to be made, we hereby jointly and severally bind ourselves, successors and assigns.
The condition of the above obligation is such that whereas the Principal has submitted to OWNER a certain BID attached hereto and hereby made a par t hereof to enter into a contract in writing, for the Library Elevator Upgrade Project, City Project No. C2518..
NOW, THEREFORE
(a) If said BID shall be rejected, or
(b) If said BID shall be accepted and the Principal shall execute and deliver a contract in the Form of Contract attached hereto (properly complete d in accordance with said BIDS including all required bonds for faithful performance and labor and material, as well as all required evidence of insurance) then this obligation shall be void, otherwise the same shall remain in force and effect.
In the event the City brings suit upon this Bond, s urety shall pay reasonable attorney’s fees and costs incurred by the City in such suit.
The Surety, for value received, stipulates and agre es that the obligations of said Surety and its BOND shall be in no way impaired or affected by any extension of the time within which the City of San Carlos may accept such BID; and said Surety does hereby waive notice of any such extension.
IN WITNESS WHEREOF, the Principal and the Surety h ave hereunto set their hands and seals, and such of them as are corporations have caused their corporate seals to be hereto affixed and these presents to be signed by their proper officers, this day and year first set forth.
By: (L.S.) By:
(Principal) (Seal) (Surety) (Seal)
Subscribed and sworn to before me, a Notary Public in and for the State of California, County of
_____________________, this ______ day of _________________, 20____.
Signature of Notary Public:________________________ (Seal)
My Commission expires __________________, 20_____
IMPORTANT: Surety companies executing BONDS must be authorized to transact Surety insurance in the State of California. If Contractor is Partnership, all partners should execute BOND.
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The Plans and specifications prepared by ______ dated _______and the City of San Carlos General Provisions are made part of the Contract and are hereby incorporated by this reference.
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AGREEMENT AND AGREEMENT FORMS
TABLE OF CONTENTS
Public Project Agreement ............................................................................. ............ A-2 Exhibit A: Contractor’s Bid Proposal ............................................................... ........ A-12 Exhibit B: Insurance Coverage ....................................................................... ......... A-13 Resolution of Construction Claims .................................................................... ........ A-14 Agreement Forms
Payment Bond ......................................................................................... ..... A-16 Performance Bond ..................................................................................... ... A-18 Workers Compensation Certification ............................................................ A-20 Certification of Safety Requirements for Contractors and Vendors ................ A-21 Drug Free Workplace Certification ................................................................ A- 22 Escrow Agreement for Security Deposits in Lieu of Retention (Optional) ...... A-23 Guarantee ............................................................................................ ......... A-25
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AGREEMENT FOR PUBLIC PROJECTS
This Agreement is made and entered into as of _____ _____________ by and between the City of San Carlos hereinafter called "CITY" and ____________________ hereinafter called "CONTRACTOR.”
RECITALS
This Agreement is entered into with reference to the following facts and circumstances:
A. That CITY desires to engage CONTRACTOR to provid e a product and/or services to the CITY;
B. That CONTRACTOR is qualified to provide the pro duct and/or services to the CITY and;
THEREFORE, the CITY has elected to engage CONTRACTO R upon the terms and conditions as hereinafter set forth.
1. Services. The services to be performed by CONTR ACTOR under this Agreement are described in Exhibit A, the CONTRACTO R’S bid proposal which is, by this reference, incorporated herein an d made a part hereof as though it were fully set forth herein.
Performance of the services specified in said Exhib it is hereby made an obligation of CONTRACTOR under this Agreement, subject to any changes that may be made subsequently hereto upon the mutual written agreement of the said parties.
Where in conflict, the terms of this Agreement supe rsede and prevail over any terms set forth in Exhibit A.
2. Term; Termination. (a) The term of this Agreemen t shall commence upon the date hereinabove written and shall expire upon the date enumerated in Exhibit A, delivery of the product or completion of performance of services hereunder by CONTRACTOR, whichever date shall first occur. (b) Notwithstanding the provisions of (a) above, CITY m ay terminate this Agreement without cause by giving written notice no t less than thirty (30) days prior to the effective date of termination, wh ich date shall be included in said notice. CITY shall compensate CONTRACTOR fo r any product delivered and/or for services rendered, and reimbur se CONTRACTOR for costs and expenses incurred, to the date of termina tion, calculated in accordance with the provisions of paragraph 3. In ascertaining the services actually rendered to the date of termination, consi deration shall be given both to completed work and work in process of compl etion. Nothing herein
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contained shall be deemed a limitation upon the right of CITY to terminate this Agreement for cause, or otherwise to exercise such rights or pursue such remedies as may accrue to CITY hereunder.
3. Compensation; Expenses; Payment. CITY shall com pensate CONTRACTOR for all products supplied or services pe rformed by CONTRACTOR hereunder as shown in Exhibit A attached hereto and by this reference incorporated herein.
Notwithstanding the foregoing, the combined total o f compensation and reimbursement of costs payable hereunder shall not exceed the sum of __________________$_________, as provided in the ap proved bid documents or in this Agreement unless additional am ounts have been authorized in the acceptance of the bid and approve d in advance of supplying the product, performing the services or i ncurring the costs and expenses by CITY’s City Manager (for contracts less than $175,000 or authorized by City Council action for contracts $175,000 or more by motion duly made and carried).
Compensation and reimbursement of costs and expense s hereunder shall be payable upon CONTRACTOR meeting contract milesto nes as defined in Exhibit A. Billing shall include an itemized statement, briefly describing by task and labor category or cost/expense items billed.
4. Contractor affirms that its employees and contractors comply with California Prevailing Wage Law.
5. Additional Services. In the event the public pro ject requires the delivery of additional products or performance of additional se rvices not otherwise included within Exhibit A, such products or service s must be authorized in advance by CITY’s City Manager (for contracts less than $175,000 or authorized by City Council action for contracts $17 5,000 or more. Such amendment to this Agreement shall include a descrip tion of the project or services to be performed thereunder, the maximum co mpensation and reimbursement of costs and expenses payable therefo re, the time of performance thereof, and such other matters as the parties deem appropriate. Any additional services causing the t otal contract price to exceed $175,000, shall require approval by the City Council. Except to the extent modified by written amendment, all other terms and conditions of this Agreement shall be deemed incorporated in each such amendment.
6. Records. CONTRACTOR shall keep and maintain accu rate records of products delivered or of all time expended in performing services and costs and expenses incurred relating thereto. Said record s shall be available to CITY for review and copying during regular business hours at
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CONTRACTOR’s place of business or as otherwise agre ed upon by the parties.
7. Authorization. This Agreement becomes effective when endorsed by both parties in the space provided below.
8. Reliance on Specialized Professional Skill of CO NTRACTOR.
CONTRACTOR represents that it has the necessary pro fessional skills to perform the services required and the CITY shall re ly on such specialized skills of the CONTRACTOR to do and perform the work . In performing services hereunder CONTRACTOR shall adhere to the standards generally prevailing for the performance of services similar to those to be performed by CONTRACTOR hereunder.
9. Documents. All documents, plans, drawings, rende rings, and other papers, or copies thereof, as finally rendered, prepared by CONTRACTOR pursuant to the terms of this Agreement, shall, upon preparation and delivery to CITY, become the property of CITY
10. Relationship of Parties. It is understood that the relationship of CONTRACTOR to the CITY is that of an independent co ntractor and all persons working for or under the direction of CONTRACTOR are its agents or employees and not agents or employees of the CITY.
11. Schedule. CONTRACTOR shall adhere to the schedu le set forth in Exhibit A; provided, that CITY shall grant reasonable exten sions of time for the delivery of products or performance of services occ asioned by governmental reviews of CONTRACTOR’s work product o r other unavoidable delays; provided, further, that such unavoidable delay shall not include strikes, lockouts, work stoppages, or other labor disturbances conducted by, or on behalf of, CONTRACTOR’s officers or employees.
CONTRACTOR acknowledges the importance to CITY of timely delivery of products or services and agrees to put forth its be st professional efforts to perform in a manner consistent with that schedule.
12. Indemnity. CONTRACTOR shall indemnify and hold harmless City, its officers, employees, agents and volunteers from and against all liability, loss, damage, expense, and cost (including, without limitation, reasonable legal counsel fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with C ONTRACTOR’s negligence, recklessness, or willful misconduct in the performance of work hereunder, or its failure to comply with any of its obligations contained in this Agreement, except such loss or damage caused b y the active negligence or willful misconduct of the City. It is expressly understood and agreed that the foregoing provisions are intended t o be as broad and
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inclusive as is permitted by the law of the State of California and will survive termination of this Agreement.
Nothing herein contained shall be construed to requ ire CONTRACTOR to indemnify CITY, its officers, employees, agents and volunteers against any responsibility or liability in contravention of Sec tion 2782 of the California Civil Code.
13. Insurance. CONTRACTOR shall acquire and maintai n Workers’ Compensation, employer’s liability, commercial general liability, owned and non-owned and hired automobile liability insurance coverage relating to CONTRACTOR’s services to be performed hereunder cov ering CITY’s risks in form subject to the approval of the City Attorney and/or CITY’s Risk Manager. The minimum amounts of coverage correspond ing to the aforesaid categories of insurance per insurable event shall be as follows:
Insurance Category Minimum Limits
Workers’ Compensation statutory minimum
Employer’s Liability $1,000,000 per accident for bo dily injury or disease. Contractor shall
submit to City a Waiver of
Subrogation endorsement in favor
of City, its officers, agents,
employees, and volunteers.
Commercial General Liability $2,000,000 per occurre nce for Liability bodily injury,
personal injury, and property
damage, including without
limitation, blanket contractual
liability and coverage for
explosion, collapse and
underground property damage
hazards. If a general aggregate
limit applies, either the general
aggregate limit shall apply
separately to this project/location
or the general aggregate limit shall
be twice the required occurrence
limit. Coverage must be at least as
broad as Insurance Services
Office form CG 00 01.
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Automobile Liability $2,000,000 per accident for bo dily injury and property damage
(coverage required to the extent
applicable to CONTRACTOR’s
vehicle usage in performing
services hereunder)
Concurrently with the execution of this Agreement, CONTRACTOR shall furnish CITY with certificates and copies of information or declaration pages of the insurance required hereunder and, with respe ct to evidence of commercial general liability and automobile liabili ty insurance coverage, original endorsements:
(a) Precluding cancellation or reduction in per occ urrence limits before the expiration of thirty (30) days (10 days for nonpayment) after CITY shall have received written notification of cancellation in coverage or reduction in per occurrence limits by first class mail;
(b) Contractor’s general liability policies shall b e primary and non- contributory, and be endorsed using Insurance Services Office form CG 20 10 to provide that City and its officers, off icials, employees, and agents shall be additional insureds under such policies. An endorsement providing completed operations coverage for the additional insured, ISO form CG 20 37, is also required.
Claims Made Policies
If any of the required policies provide claims-made coverage:
1. The Retroactive Date must be shown, and must be before the date of the contract or the beginning of contract work.
2. Insurance must be maintained and evidence of insurance must be provided for at least five (5) years after completion of the contract of work.
3. If coverage is canceled or non-renewed, and not replaced with another claims-made policy form with a Retroactive Date prior to the contract effective date, the CONTRACTOR must purchase “extended reporting” coverage for a minimum of five (5) years after completion of contract work.
Verification of Coverage
CONTRACTOR shall furnish the CITY with original certificates and amendatory endorsements effecting coverage required by this clause. All certificates and endorsements are to be received and approved by the CITY before work commences. However, failure to obtain the required documents prior to the work beginning shall not waive the CONTRACTOR’s obligation to provide them. The CITY reserves the right to require complete, certified copies of all required insurance policies, including endorsements required by these specifications, at any time.
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Waiver of Subrogation
CONTRACTOR hereby grants to CITY a waiver of any right to subrogation which any insurer of said CONTRACTOR may acquire against the CITY by virtue of the payment of any loss under such insura nce. This provision applies regardless of whether or not the CITY has r equested or received a waiver of subrogation endorsement from the insurer.
Acceptability of Insurers
Insurance is to be placed with insurers with a current A.M. Best’s rating of no less than A:VII, unless otherwise acceptable to the City.
Special Risks or Circumstances
CITY reserves the right to modify these requirements, including limits, based on the nature of the risk, prior experience, insurer, coverage, or other special circumstances.
Coverage
It is a requirement under this agreement that any available insurance proceeds broader than or in excess of the specified minimum insurance coverage requirements and/or limits shall be made available to the Additional Insured and shall be (1) the minimum coverage and limits specified in this Agreement; or (2) the broader coverage and maximum limits of coverage of any insurance policy, whichever is greater.
CONTRACTOR shall maintain insurance as required by this contract to the fullest amount allowed by law and shall maintain insurance for a minimum of five years following completion of the project. In the event contractor fails to obtain or maintain completed operations coverage as required by this agreement, the city at its sole discretion may purchase the coverage required and the cost shall be paid by CONTRACTOR.
Primary and Non-Contributory Coverage
The Additional Insured coverage under the CONTRACTOR’s policy shall be “primary and non-contributory” as will not seek contribution from the CITY insurance or self-insurance and shall be at least as broad as CG 20 01 04 12.
Excess Insurance
The limits of insurance required in this agreement may be satisfied by a combination of primary and umbrella or excess insurance. Any umbrella or excess insurance shall contain or be endorsed to contain a provision that such coverage shall also apply on a primary and noncontributory basis for the benefit of CITY before the CITY insurance or self-insurance shall be called upon to protect it as a named insured.
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14. SUBCONTRACTORS. CONTRACTOR agrees to include with all subcontractors in their subcontracts the same requirements and provisions of this agreement including the indemnity and Insur ance requirements to the extent they apply to the scope of the Subcontra ctors’ work.
Subcontractors hired by CONTRACTOR agree to be boun d to CONTRACTOR and CITY in the same manner and to the s ame extent as CONTRACTOR is bound to CITY under the Contract docu ments.
Subcontractor shall agree to include these same pro visions in any agreement with a sub-subcontractor. CONTRACTOR sha ll require all subcontractors to provide a valid certificate of in surance and the required endorsements included in the agreement prior to com mencement of any work and will provide proof of compliance to the CITY.
Subcontractor shall agree to be bound to CONTRACTO R and CITY in the same manner and to the same extent as CONTRACTOR is bound to CITY under the Contract Documents. Subcontractor shall further agree to include the same requirements and provisions of this agreem ent, including the indemnity and Insurance requirements, with a Sub-su bcontractor to the extent they apply to the scope of the Sub-subcontra ctors’ work. A copy of the CITY Contract Document Indemnity and Insurance provisions shall be furnished to the subcontractor upon request.
15. WORKERS' COMPENSATION. CONTRACTOR acknowledges and certifies awareness of the provisions of the Labor Code of the State of California which require every employer to be insur ed against liability for workers' compensation or to undertake self-insuranc e in accordance with the provisions of that Code, and CONTRACTOR certifi es and agrees to compliance with such provisions before commencing t he performance of the work of this agreement.
16. NON-DISCRIMINATION. The CONTRACTOR hereby assu res that it will comply with Subchapter VI of the Civil Rights Act of 1964, 42 USC Section 2000 (e)(17), to the end that CONTRACTOR will not e xclude any person from participation in, be denied the benefits of, o r be otherwise subject to discrimination from any project, program, or activi ty supported by this Agreement, based on the grounds of race, color, nat ional origin, sex, disability, age, or religion,. CONTRACTOR shall com ply with its EEO Certification (Form PW-7). In addition, CONTRACTOR will not discriminate against any employee or applicant for employment be cause of race, color, religion, sex or national origin. The CONTRACTOR w ill take affirmative action to ensure that applicants are employed and t he employees are treated during employment without regard to their r ace, color, religion, sex or national origin. Such action shall include, but not be limited to the following: employment, advancement, demotion, tran sfer, recruitment, or recruitment advertising, layoff or termination, rates of pay or other forms of compensation, and selection for training, including apprenticeship. The
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CONTRACTOR shall at all times be in compliance with the requirements of the Federal Americans With Disabilities Act (Public Law 101-336) which prohibits discrimination on the basis of disability by public entities. The CONTRACTOR agrees to post in conspicuous places ava ilable to employees and applicants for employment any notices provided by the CITY setting forth the provisions of this non-discrimination clause.
17. Notice. All notices required by this Agreement shall be given to the CITY and CONTRACTOR in writing, by first class mail, pos tage prepaid, addressed as follows:
CITY: City of San Carlos
600 Elm Street
San Carlos, CA 94070
Attention: City Manager
CONTRACTOR: _____________________
Address
Phone
Attention: ______________
18. Non-Assignment. This Agreement is not assignab le either in whole or in part.
19. Amendments. This Agreement may be amended or m odified only by written agreement signed by both parties.
20. Business Registration. CONTRACTOR agrees to com ply with Chapter
5.04 of the Municipal Code and pay all fees required to be paid.
21. Validity. The invalidity in whole or in part o f any provision of this Agreement shall not void or affect the validity of any other provision of this Agreement.
22. Governing Law. This Agreement shall be governe d by the laws of the State of California and any suit or action initiated by e ither party shall be brought in the County of San Mateo, California. In the eve nt of litigation between the parties hereto to enforce any provision of the Agreement, the unsuccessful party will pay the reasonable attorney’s fees and expenses of litigation of the successful party.
23. Mediation. Should any dispute arise out of thi s Agreement, the parties shall meet in mediation and attempt to reach a resolution with the assistance of a mutually acceptable mediator. Neither party shall be permitted to file legal action without first meeting in mediation and making a good faith attempt to reach a mediated resolution. The costs of the mediator, if any, shall be paid equally by the parties. If a mediated settlement i s reached neither party
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shall be deemed the prevailing party for purposes o f the settlement and each party shall bear its own legal costs. If a par ty refuses or fails to participate in mediation in good faith prior to filing a lawsuit, then that party shall be barred from recovery of attorneys fees and costs of suit.
24. Conflict of Interest. CONTRACTOR may serve oth er clients, but none who are active within the City of San Carlos or who conduct business that would place CONTRACTOR in a "conflict of interest" as tha t term is defined in State law.
25. Entire Agreement. Each party acknowledges that this agreement, the exhibits hereto, and the documents incorporated by reference herein constitute the complete agreement and exclusive sta tement of the terms and conditions between the parties, which supersedes and merges all prior proposals, understandings and all other agreements, verbal and written, between the parties relating to the subject matter of this agreement. This agreement may not be modified or altered except by written instrument duly executed by both parties.
[SIGNATURE PAGE TO FOLLOW]
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SIGNATURE PAGE
IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed on the date first above written by their respective officers duly authorized in that behalf.
CITY OF SAN CARLOS:
Dated:
Nil Blackburn, City Manager
ATTEST:
Dated:
Crystal Mui, City Clerk
APPROVED AS TO FORM:
Dated:
Gregory J. Rubens, City Attorney
CONSULTANT/CONTRACTOR/VENDOR:
I acknowledge that I have full authority to execute this agreement on behalf of the Consultant/Contractor/Vendor, and have read, unders tand, and agree to comply with the provisions of this Agreement, including the Insurance and indemnity requirements set forth herein.
Dated:
EXHIBIT A
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CONTRACTOR’S BID PROPOSAL
[To be attached]
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EXHIBIT B
This INSURANCE COVERAGE FORM modifies or documents insurance provided under the following:
Named Insured: Effective Work Date(s):
Description of Work/Locations/Vehicles:
ADDITIONAL INSURED: City of San Carlos
600 Elm Street, San Carlos, CA 94070
Attention: _________________________________
Contract Administrator
Endorsement and Certificates of Insurance Required
The Additional Insured, its elected or appointed of ficers, officials, employees and volunteers are included as insureds w ith regard to damages and defense of claims arising from: (Check all that apply) Insurer Policy No.
General Liability : (a) activities performed by or on behalf of the Na med Insured, (b) products and completed operations of the Named Insured, (c) premises owned, leased occupied or used by the Name d Insured, and/or (d) permits issued for operations performed by the Named In sured. {Note:
MEETS OR EXCEEDS ISO Form # CG 20 10 11 85}
Auto Liability : the ownership, operation, maintenance, use, loadi ng or unloading of any auto owned, leased, hired or borro wed by the Named Insured, regardless of whether liability is attributable to the Named Insured or a combination of the Named Insured and the Addit ional Insured, its elected or appointed officers, officials, employees or volunteers.
Other:
Certificate s of Insurance Required (no endorsement needed) (Check all that apply)
Insurer Policy No.
Workers Compensation : work performed by employees of the Named Insured while those employees are engaged in work u nder the simultaneous directions and control of the Named In sured and the Additional Insured.
Professional Liability:
PRIMARY/NON-CONTRIBUTORY : This insurance is primary and is not additional to or contributing with any other insurance carried by or for the benefit of Additional Insureds.
SEVERABILITY OF INTEREST: The insurance afforded by this policy applies sepa rately to each insured who is seeking coverage or a gainst whom a claim is made or a suit is brought, except with respect to the insurer’s limit of liability.
PROVISIONS REGARDING THE INSURED'S DUTIES AFTER ACCIDENT OR LOSS: Any failure to comply with reporting provisions of the policy shall not affect coverage provided to the Additional Insured, its elected or appointed officers, officials, employees, or volunteers.
CANCELLATION NOTICE . The insurance afforded by this policy shall not be suspended, voided, canceled, reduced in coverage or in limits except after thirty (30) days' prior written notice (ten (10) days if canceled due to non-payment) by regular mail return receipt requested has been given to the Additional Insured. Such notice shall be addressed as shown above.
WAIVER OF SUBROGATION: The insurer(s) named above agree to waive all rights of subrogation against the CITY/Public Works Departmentt, its elected or appointed officers, officials, agent s, volunteers and employees for losses paid under t he terms of this policy which arise from work performed by the Named Insured for the CITY/Public Works Department.
Nothing herein contained shall vary, alter or extend any provision or condition of the Policy other than as above stated.
SIGNATURE OF INSURER OR AUTHORIZED REPRESENTATIVE OF THE INSURER I, ________________________________________________ _______________(print/type name), warrant that I ha ve authority to bind the above-named insurance company and by my signature hereon do so bind this company.
________________________________________________________________ _____________________ SIGNATURE OF AUTHORIZED REPRESENTATIVE (original signature required) DATE ISSUED
ORGANIZATION:_________________________________________ TITLE:______________________________
ADDRESS: _____________________________________________ TELEPHONE: ( ) _______
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RESOLUTION OF CONSTRUCTION CLAIMS
Any public works claims arising under this contract which the Contractor wishes to assert against the Governing Agency shall be governed by California Public Contr act Code Section 9204. Claims which do not exceed three hundred seventy-five thousand dollars ($375,000) are also subject to the provisions of Article 1.5 o f the California Public Contract Code (commencing with Section 20104 ). Pursuant to California Public Contracts Code Section 9204, claims shall be resolved as follows:
(d) (1) (A) Upon receipt of a claim pursuant to this section, the public entity to which the claim applies shall conduct a reasonable review of the claim and, within a peri od not to exceed 45 days, shall provide the claiman t a written statement identifying what portion of the claim is disputed and what portion is undisputed. Upon recei pt of a claim, a public entity and a contractor may, by mutual agreement, extend the time period provided in this subdivision.
(B) The claimant shall furnish reasonable documentation to support the claim.
(C) If the public entity needs approval from its governing body to provide the claimant a written statement identifying the disputed portion and the undisputed portion of the claim, and the governing body does not meet wit hin the 45 days or within the mutually agreed to extension of time following receipt of a claim sent by registered mail or certified mail, return receipt requested, the public entity s hall have up to three days following the next duly publicly noticed meeting of the governing body after the 45-day peri od, or extension, expires to provide the claimant a written statement identifying the disputed portion and the undisputed portion.
(D) Any payment due on an undisputed portion of the claim shall be processed and made within 60 days a fter the public entity issues its written statement. If the public entity fails to issue a written statement, p aragraph (3) shall apply.
(2) (A) If the claimant disputes the public entity’ s written response, or if the public entity fails t o respond to a claim issued pursuant to this section within the time pre scribed, the claimant may demand in writing an info rmal conference to meet and confer for settlement of the issues in dispute. Upon receipt of a demand in wri ting sent by registered mail or certified mail, return receipt r equested, the public entity shall schedule a meet a nd confer conference within 30 days for settlement of the dispute.
(B) Within 10 business days following the conclusion of the meet and confer conference, if the claim or any portion of the claim remains in dispute, the public entity shall provide the claimant a written statement identifying the portion of the claim that remains in dispute and the portio n that is undisputed. Any payment due on an undispu ted portion of the claim shall be processed and made within 60 days after the public entity issues its written sta tement. Any disputed portion of the claim, as identified by the contractor in writing, shall be submitted to nonbi nding mediation, with the public entity and the claimant sharing the associated costs equally. The public entity and cl aimant shall mutually agree to a mediator within 10 business day s after the disputed portion of the claim has been identified in writing. If the parties cannot agree upon a mediato r, each party shall select a mediator and those med iators shall select a qualified neutral third party to mediate w ith regard to the disputed portion of the claim. Ea ch party shall bear the fees and costs charged by its respective mediator in connection with the selection of the neutral mediator.
If mediation is unsuccessful, the parts of the clai m remaining in dispute shall be subject to applicab le procedures outside this section.
(C) For purposes of this section, mediation include s any nonbinding process, including, but not limite d to, neutral evaluation or a dispute review board, in which an i ndependent third party or board assists the parties in dispute resolution through negotiation or by issuance of an evaluation. Any mediation utilized shall conform t o the timeframes in this section.
(D) Unless otherwise agreed to by the public entity and the contractor in writing, the mediation conducted pursuant to this section shall excuse any further obligation under Section 20104.4 to mediate after litigation has been commenced.
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(E) This section does not preclude a public entity from requiring arbitration of disputes under privat e arbitration or the Public Works Contract Arbitration Program, if mediation under this section does not resolve the parties’ dispute.
(3) Failure by the public entity to respond to a cl aim from a contractor within the time periods descr ibed in this subdivision or to otherwise meet the time requirements of this section shall result in the claim being deemed rejected in its entirety. A claim that is denied by reason of the public entity’s failure to have responded to a claim, or its failure to otherwise meet the time requirements of this sec tion, shall not constitute an adverse finding with regard to the merits of the claim or the responsibility or qualifications of the claimant.
(4) Amounts not paid in a timely manner as required by this section shall bear interest at 7 percent per annum.
(5) If a subcontractor or a lower tier subcontracto r lacks legal standing to assert a claim against a public entity because privity of contract does not exist, the con tractor may present to the public entity a claim on behalf of a subcontractor or lower tier subcontractor. A subcon tractor may request in writing, either on their own behalf or on behalf of a lower tier subcontractor, that the cont ractor present a claim for work which was performed by the subcontractor or by a lower tier subcontractor on behalf of the subcontractor. The subcontractor requesting that the claim be presented to the public entity shall furnish reasonable documentation to support the claim. Within 45 days of receipt of this written request, the contractor shall notify the subcontractor in writing as to whether the contractor presented the claim to the public entity and, if th e original contractor did not present the claim, pr ovide the subcontractor with a statement of the reasons for not having done so.
A waiver of the rights granted by this section is void and contrary to public policy, provided, however, that (1) upon receipt of a claim, the parties may mutually agree to waive, in writing, mediation and proceed directl y to the commencement of a civil action or binding arbitrati on, as applicable; and (2) a public entity may pres cribe reasonable change order, claim, and dispute resolut ion procedures and requirements in addition to the provisions of this section, so long as the contractual provisi ons do not conflict with or otherwise impair the ti meframes and procedures set forth in this section.
Nothing in this section shall impose liability upon a public entity that makes loans or grants availab le through a competitive application process, for the failure of an awardee to meet its contractual obligations.
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PAYMENT BOND
KNOW ALL PERSONS BY THESE PRESENTS, that
WHEREAS, The City of San Carlos (hereinafter referred to as “Owner”) and (hereinafter referred to as “Principal”) have entered into a contract for the construction of Library Elevator Upgrade Project, City Project No. C2518 and
WHEREAS, under the terms of said contract Principal is requi red to furnish a bond securing payment of the claims to which reference is made in Section 3248 of the Civil Code;
NOW, THEREFORE, we, the Principal, and
, as Surety, are held and firmly bound unto th e “Owner” in the penal sum of /l00 Dollars ($ )
lawful money of the United States, being not less t han one hundred percent (100%) of the amount payable by the terms of the contract, for the payme nt of which sum well and truly to be made we bind ourselves, our heirs, executors, administrators and successors, jointly and severally, firmly by these presents.
The condition of this obligation is such that if s aid Principal or any of its subcontractors fails to pay any of the persons named in Section 3181 of the Civ il Code, or amounts due under the Unemployment Insurance Code with respect to work or labor performed under the contract, or for any amounts required to be deducted, withheld, and paid over to the Franchise Tax Board from the wages of employees of the Principal or its subcontractors pursuant to Section 18806 of the Revenue and Taxation Code, with respect to such work and labor that the Surety will pay for the same, in an amount not exceeding the amount hereinabove set forth and also will pay, in case su it is brought upon this bond, a reasonable attorney ’s fee, to be fixed by the court. We hereby state and confirm that we are a “California admitted insurer” as defined by the California Department of Insurance.
This bond shall inure to the benefit of any of the persons named in Section 3181 of the Civil Code so as to give a right of action to such persons or their assigns in any suit brought upon this bond.
This bond is given to comply with Sections 3247 an d 3248 of the Civil Code. The liability of the Principal and Surety hereunder is governed by the provisions of said Code, all acts amendatory thereof, and all other statutes referred to therein, including Section 3225 of the Civil Code.
The Surety hereby stipulates and agrees that no change, extension of time, alteration or addition to the terms of the contract or to the work to be performed there under or the specifications accompanying the same shall in any ways affect its obligation on this bond, and it does hereby waive notice of any such change, extension of time, alteration or addition t o the terms of the contract or to the work or to th e specifications.
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IN WITNESS WHEREOF, the above bounded parties have executed this instrument under their seals this _________ day of _________________ _, 20 , the name and corporate seal of each corporate body being hereto affixed and these presents duly signed by its undersigned representative, pursuant to authority of its governing body.
(Principal)
NOTE: By
To be signed by By
Principal and Surety
and acknowledgment
and nortarial seal
(Surety)
By
By
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PERFORMANCE BOND
KNOW ALL PERSONS BY THESE PRESENTS, that
WHEREAS , The City of San Carlos (hereinafter referred to as “Owner”) has entered into a contract with _ ___________________ (hereinafter referred to as “Principal”) for the construction of Library Elevator Upgrade Project, City Project No. C2518 , and
WHEREAS, said Principal is required under the terms of said contract to furnish a bond of faithful performance of said Contract;
NOW, THEREFORE, we, the Principal, and
, as Surety, are held and firmly bound unto t he
“Owner” in the penal sum of _____________________________/100 Dollars($ ) lawful money of the United States, being a sum equa l to the total amount payable under the contract, for the payment of which sum, well and tr uly to be made, we bind ourselves, our heirs, executors, administrators and successors, jointly and severally, firmly by these presents.
THE CONDITION OF THIS OBLIGATION IS SUCH that if the above bounded Principal shall in all things stand to and abide by and well and truly keep and perform the covenants, conditions and agreements in the said contract and any alteration thereof made as therein provided, on the Contractor’s part to be kept and performed at the time and in the manner therein specified, and in all respects according to the Con tractor’s true intent and meaning, as therein stipulated, then this obligation shall become null and void; otherwise it shall be and remain in full force and virtue.
As a condition precedent to satisfactory completio n of the said contract, the above obligations to the amount of a nd-00/100 Dollars ($ ) being not less t han ten percent (10%) of the total amount payable under the contract, shall hold good for a period of two (2) years after the completion and acceptance of said work, during which time if the above Principal shall fail to make full, complete and satisfactory repair and replacement or totally protect the “Owner” from loss or damage made evident during sai d period of two (2) years from the date of acceptance of said work, and resulting from or caused by defective materials or faulty workmanship in the prosecution of the work done, the above obligations in the said sum of and-00/100 Dollars ($ ) shall remain in full fo rce and virtue; otherwise the above obligation shall be void.
And the said Surety, for value received, hereby st ipulates and agrees that no change, extension of time, alteration or addition to the terms of the Contract or to the work to be performed there under of the Specifications accompanying the same shall in any ways affect its obligations on this bond, and it does hereby waive notice of any such change, extension of time, alteration or addition to the terms of the contract or to the work or to the Specifications. We hereby state and confirm that we are a “California admitted insurer” as defined by the California Department of Insurance.
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In the event that the “Owner” or its successors or assigns, shall be the prevailing party in an action brought upon this bond, then, in addition to the penal sum hereinabove specified, we agree to pay to the “Owner” for its successors or a ssigns, a reasonable sum on account of attorney’s fees in such action, which sum shall be fixed by the court.
IN WITNESS WHEREOF, the above bounded parties have executed this instrument under their seals this _________ day of __________________, 20 , the name and corporate seal of each corporate party being hereto affixed and these presents duly signed by its undersigned representative, pursuant to the authority of its governing body.
(Principal)
NOTE: By
To be signed by By
Principal and Surety
and acknowledgment
and notarial seal
(Surety)
By
By
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WORKERS' COMPENSATION CERTIFICATION
Labor Code Section 1861
The Bidder hereby certifies as follows:
"I am aware of the provisions of Section 3700 of the Labor Code, which requires every employer to be insured against liability for Workers' Compensation or to undertake self-insurance in accordance with the provisions of that code, and I will comply with such provisions and furnish proof of said insurance before commencing the performance of the work of this contract."
Name of Contractor
Signature of Contractor Representative
Dated: __________________________
NOTE:
T HIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION .
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CERTIFICATION OF SAFETY REQUIREMENTS FOR
CONTRACTORS AND VENDORS
California Code of Regulations, Title 8, Section 1509
To work as a contractor or vendor with the City of San Carlos, your organization is required to certify that it has an active on-the-job written Injury and Illness Prevention Program. This program is essential to make the job as accident-free as possible and to comply with Federal and State Safety Standards.
The undersigned hereby certifies that the Contractor’s organization has an active written Injury and Illness Prevention Program, as required by Cal-OSHA under California Code of Regulations, Title 8, General Industry Safety Orders, Section 3203 and/or Construction Safety Orders, Section 1509, that ensures compliance with, and enforcement of, current minimum Cal- OSHA Safety Standards, and that the Contractor’s organization has knowledge of these standards that are applicable to the job operations. This includes a program for ensuring employees have been trained to recognize hazards of their job.
The undersigned also hereby certifies that the Contractor’s organization has an active written Hazard Communication Program with evidence that all employees have been trained in safe use and handling of chemicals on the job site, and a file will be made available for review by the City of San Carlos of each Material Safety Data Sheet (MSDS) on those chemicals kept on the site.
Name of Contractor
Signature of Contractor Representative
Dated: __________________________
NOTE:
T HIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION .
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DRUG-FREE WORKPLACE CERTIFICATION
The bidder_________________________________________________________________, hereby certifies compliance with Government Code Section 8355 in matters relating to providing a drug-free workplace. The contractor will:
1. Publish a statement notifying employees that un lawful manufacture, distribution, dispensation, possession, or use of a controlled substance is prohibited and specifying actions to be taken against employees for violations, as required by Government Code Section 8355(a).
2. Establish a Drug-Free Awareness Program as requ ired by Government Code Section 8355(b), to inform employees about all of the following:
(a) The dangers of drug abuse in the workplace,
(b) The person’s or organization’s policy of maint aining a drug-free workplace, (c) Any available counseling, rehabilitation and e mployee assistance programs, and (d) Penalties that may be imposed upon employees f or drug abuse violations.
3. Provide as required by Government Code Section 8355(c), that every employee who works on the proposed contract or loan:
(a) Will receive a copy of the company’s drug-free policy statement, and (b) Will agree to abide by the terms of the compan y’s statement as a condition of employment on the contract or loan.
I, the official named below, hereby swear that I am duly authorized legally to bind the contractor to the above described certification. I am fully aware that this certification, executed on the date below, is made under penalty of perjury under the laws of the State of California.
Dated:_______________________, 20____.
________________________________
Contractor’s Signature
NOTE:
T HIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO THE START OF CONSTRUCTION .
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ESCROW AGREEMENT FOR SECURITY DEPOSITS IN LIEU OF RETENTION (Optional) Public Contract Code Section 22300
This Escrow Agreement is made and entered into by a nd between _______________________________ whose address is __________________________________ ________________ hereinafter called "Owner,"________________________________ whose addr ess is ______________________________
____________________hereinafter called "Contractor" and ____________________________________ whose address is __________________________________ ________ hereinafter called "Escrow Agent." For the consideration hereinafter set forth, the Owner, Contractor, and Escrow Agent agree as follows:
(1) Pursuant to Section 22300 of the Public Contract Code of the State of California, Contractor has the option to deposit securities with Escrow Agent as a substitute for retention earnings required to be withheld by Owner pursuant to the Construction Contract entered into between the Owner and Contractor for ______________ ____ in the amount of _______________ dated __________ ( hereinafter referred to as the "Contract"). Alternatively, on written request of the Contractor, the Owner shall make payments of the retention earnings directly to the Escrow Agent. When the Contractor deposits the secu rities as a substitute for Contract earnings, the Escrow Agent shall notify the Owner within 10 days of the deposit. The market value of the securities at the time of the substitution shall be at least equal to the cash amount then required to be withheld as retention under the terms of the Contract between the Owner and Contractor. Securities shall be held in the name of ____________________, and shall designate the Contr actor as the beneficial owner.
(2) The Owner shall make progress payments to the C ontractor for those funds which otherwise would be withheld
from progress payments pursuant to the Contract provisions, provided that the Escrow Agent holds secur ities in the form and amount specified above.
(3) When the Owner makes payment of retentions earn ed directly to the Escrow Agent, the Escrow Agent shall hold them for the benefit of the Contractor until the time that the escrow created under this contract is terminated.
The Contractor may direct the investment of the payments into securities. All terms and conditions of this agreement and the rights and responsibilities of the parties shall be equally applicable and binding when the Owner pays the Escrow Agent directly.
(4) Contractor shall be responsible for paying all fees for the expenses incurred by Escrow Agent in a dministering the Escrow Account and all expenses of the Owner. These expenses and payment terms shall be determined by the Owner, Contractor, and Escrow Agent.
(5) The interest earned on the securities or the money market accounts held in escrow and all interest earned on that interest shall be for the sole account of Contractor and shall be subject to withdrawal by Contra ctor at any time and from time to time without notice to the Owner.
(6) Contractor shall have the right to withdraw all or any part of the principal in the Escrow Account only by written notice to Escrow Agent accompanied by written authorization from the Owner to the Escrow Agent that Owner consents to the withdrawal of the amount sought to be withdrawn by Contractor.
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(7) The Owner shall have a right to draw upon the securities in the event of default by the Contractor. Upon seven (7) days written notice to the Escrow Agent from the owner of the default, the Escrow Agent shall immediately convert the securities to cash and shall distribute the cash as instructed by the Owner. (8) Upon receipt of written notification from the Owner certifying that the Contract is final and complete, and that the Contractor has complied with all requirements and procedures applicable to the Contract, Escrow Agent shall release to Contractor all securities and interest on deposit less escrow fees and charges of the Escro w Account.
The escrow shall be closed immediately upon disburs ement of all moneys and securities on deposit and payments of fees and charges.
(9) Escrow Agent shall rely on the written notifications from the Owner and the Contractor pursuant to Sections (5) to (8), inclusive, of this agreement and the Owner and Contractor shall hold Escrow Agent harmless fro m Escrow Agent's release and disbursement of the securities and interest as set forth above.
(10) The names of the persons who are authorized to give written notice or to receive written notice on behalf of the Owner and on behalf of Contractor in connection with the foregoing, and exemplars of their respect ive signatures are as follows:
On behalf of Owner: On behalf of Contractor: On b ehalf of Escrow Agent:
___________________________ ______________________ _____ _______________________________ Title Title Title
___________________________ ______________________ _____ _______________________________ Name Name Name
___________________________ ______________________ _____ _______________________________ Signature Signature Signature
___________________________ ______________________ _____ _______________________________ Address Address Address
At the time the Escrow Account is opened, the Owner and Contractor shall deliver to the Escrow Agent a fully executed counterpart of this Agreement.
IN WITNESS WHEREOF, the parties have executed this Agreement by their proper officers on the date first set forth above.
Owner: Contractor:
______________________________ ___________________ ________________ Title Title
______________________________ ___________________ ________________ Name Name
______________________________ ___________________ ________________ Signature Signature
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GUARANTEE
(To Be Submitted Prior to Project Acceptance)
FOR THE
City of San Carlos
San Carlos, CA 94070
Library Elevator Upgrade Project
City Project No. C2518
We hereby guarantee that the work we have installe d for the above named project has been done in accordance with the Plans and Specific ations and that the work installed will fulfill the requirements of the guarantee.
We agree to repair or replace any or all of our wo rk, together with any other adjacent work which may be displayed in so doing that may prove to be defective in its workmanship or material within a period of two (2) years from the date of acceptance of the above-named work by the City of San Carlos, without any expense whatsoever to the City of San Carlos, ordinary wear and tear and unusual abuse or neglect excepted.
Within fifteen (15) days after being notified in w riting by the City of San Carlos of any defects in the work, we agree to commence and prosecute with due diligence all work necessary to fulfill the terms of this guarantee, and to complete the work within a reasonable period of time, and in the event of our failure to so comply, we co llectively and separately, do hereby authorize said City of San Carlos to proceed to have such work done at our expense and we will honor and pay the cost and changes therefore upon demand.
Dated:
By:
NOTE:
T HIS CERTIFICATION MUST BE COMPLETED AND RETURNED BY THE SUCCESSFUL BIDDER PRIOR TO PROJECT ACCEPTANCE .
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GENERAL PROVISIONS
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TABLE OF CONTENTS
SECTION 1 – TERMS AND DEFINITIONS
1.01 Terms ........................................ ........................................................................................ 1
1.02 Definitions .................................. ........................................................................................ 1
SECTION 2 – PROPOSAL REQUIREMENTS AND CONDITIONS
2.01 General ...................................... ........................................................................................ 6
2.02 Proposal Forms ............................... .................................................................................. 6
2.03 Qualifications of Bidders .................... ................................................................................ 6
2.04 Rejection of Proposals Containing Alterations, Erasures, or Irregularities ........................ 6
2.05 Submission of Bids ........................... ................................................................................. 6
2.06 Approximate Estimate ......................... .............................................................................. 7
2.07 Examination of Plans, Specifications and Work Site ......................................................... 7
2.08 Withdrawal of Proposals ...................... .............................................................................. 7
2.09 Proposal Guarantee ........................... ............................................................................... 7
2.10 Disqualification of Bidders .................. ............................................................................... 7
2.11 Bid Protest Procedures ....................... .............................................................................. 7
2.12 List of Subcontractors ....................... ................................................................................. 8
2.13 Required Contractor and Subcontractor Registra tion ....................................................... 8
SECTION 3 – REVIEW OF BIDS, CONTRACT AWARD AND EXECUTION
3.01 Public Bid Opening and Initial Review ........ ....................................................................... 9
3.02 Determination of Lowest Responsible Bidder ... ................................................................ 9
3.03 Notice of Award .............................. ................................................................................... 10
3.04 Contract Execution ........................... ................................................................................. 10
3.05 Status of Contractor ......................... ................................................................................. 10
3.06 Assignment ................................... ..................................................................................... 10
3.07 Recognition of Subcontractors ................ .......................................................................... 10
3.08 Return of Bid Security ....................... ................................................................................ 10
3.09 Forfeiture of Proposal Guarantee ............. ......................................................................... 11
3.10 Contract Bonds ............................... ................................................................................... 11
3.11 Notification of Surety Companies ............. ......................................................................... 12
3.12 Power of Attorney ............................ .................................................................................. 12
3.13 Insurance Requirements ....................... ............................................................................ 12
3.14 Special Requirements ......................... .............................................................................. 12
3.15 Builders Risk Insurance ...................... ............................................................................... 13
3.16 Certificates ................................. ....................................................................................... 13
3.17 Legal Address of Contractor .................. ............................................................................ 13
3.18 Office of Contractor at Site ................. ............................................................................... 13
SECTION 4 – SCOPE AND CONTROL OF THE WORK
4.01 Work to be Done .............................. ................................................................................. 14
4.02 Plans and Specifications ..................... .............................................................................. 14
4.03 Reference to Standards and Codes ............. ..................................................................... 14
4.04 Authority of the Engineer .................... ............................................................................... 15
4.05 Contract Documents and Precedence ............ .................................................................. 15
4.06 Interpretation of Specifications and Drawings ................................................................... 15
4.07 Figured Dimensions ........................... ............................................................................... 15
4.08 Errors or Discrepancies ...................... ............................................................................... 16
4.09 Drawings to be Furnished by Contractor ....... .................................................................... 16
4.10 Additional Drawings by City .................. ............................................................................. 16
4.11 Lines and Grades ............................. ................................................................................. 16
4.12 Record Documents ............................. ............................................................................... 16
4.13 Record Drawings .............................. ................................................................................. 16
4.14 Reuse of Documents ........................... .............................................................................. 17
4.15 Subsurface Data .............................. .................................................................................. 17
4.16 Right-of-Way ................................. .................................................................................... 17
4.17 Removal of Defective and Unauthorized Work ... .............................................................. 17
4.18 Acceptance of Defective Work ................. ......................................................................... 17
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4.19 Submittals ................................... ....................................................................................... 17
4.20 Substitutions ................................ ...................................................................................... 18
4.21 Construction Staking Lines and Grades ........ .................................................................... 19
4.12 Inspection of the Work ....................... ................................................................................ 19
4.23 Testing ...................................... ......................................................................................... 19
SECTION 5 – CHANGES IN WORK
5.01 Limited City Authority to Approve Change Order s ............................................................ 21
5.02 Contractor Liability for Unapproved Change Ord ers ......................................................... 21
5.03 Non-Material Change Requests by the Contractor ........................................................... 21
5.04 Effect of Extension of Time .................. ............................................................................. 21
5.05 Letters of Instruction ....................... ................................................................................... 21
5.06 Requests for Information, Inconsistencies and Changed Conditions ................................ 21
5.07 Extra and Omitted Work ....................... ............................................................................. 22
5.08 Change Orders ................................ .................................................................................. 22
5.09 Disputed Work ................................ ................................................................................... 24
SECTION 6 – CONTROL OF MATERIALS
6.01 Materials and Workmanship .................... .......................................................................... 25
6.02 Protection of Work and Materials ............. ......................................................................... 25
6.03 Trade Names or Equals ........................ ............................................................................ 25
6.04 Inspection of Materials by City .............. ............................................................................ 26
6.05 Inspection of Materials by Others ............ .......................................................................... 26
6.06 Tests of Materials ........................... ................................................................................... 26
6.07 Certification ................................ ....................................................................................... 26
6.08 Weighing and Metering Equipment .............. ..................................................................... 26
6.09 Calibration of Testing Equipment ............. ......................................................................... 27
SECTION 7 – UTILITIES
7.01 City’s Statutory Obligation .................. ............................................................................... 28
7.02 Contractor’s Obligation to Identify and Protec t Subsurface Infrastructure ........................ 28
7.03 Location ..................................... ........................................................................................ 28
7.04 Protection ................................... ....................................................................................... 29
7.05 Shut Down Notification ....................... ............................................................................... 29
7.06 Removal ...................................... ...................................................................................... 29
7.07 Relocation ................................... ...................................................................................... 29
7.08 Delays ....................................... ........................................................................................ 30
7.09 Cooperation .................................. ..................................................................................... 30
SECTION 8 – PROSECUTION AND PROGRESS
8.01 Notice to Proceed ............................ .................................................................................. 31
8.02 Commencement of Work ......................... .......................................................................... 31
8.03 Subcontracting ............................... ................................................................................... 31
8.04 Administrative Duties ........................ ................................................................................. 31
8.05 Baseline Construction Schedule ............... ........................................................................ 31
8.06 Three-Week Look Ahead Schedule ............... ................................................................... 31
8.07 Construction Sequence ........................ ............................................................................. 32
8.08 Recording Existing Conditions ................ .......................................................................... 32
8.09 Preconstruction Conference ................... ........................................................................... 32
8.10 Progress Meeting ............................. ................................................................................. 32
8.11 Hours of Construction ........................ ................................................................................ 32
8.12 Prosecution of Work .......................... ................................................................................ 32
8.13 Suspension of Work ........................... ............................................................................... 33
8.14 Default by the Contractor and Termination of C ontrol ....................................................... 33
8.15 Contractor’s Right to Stop Work or Terminate C ontract .................................................... 34
8.16 City’s Right to Terminate Contract ........... ......................................................................... 34
8.17 Time of Completion and Days Charged .......... .................................................................. 35
8.18 Liquidated Damages ........................... .............................................................................. 35
8.19 Delays and Extension of Time ................. .......................................................................... 36
8.20 Substantial Completion ....................... .............................................................................. 38
8.21 Project Closeout ............................. ................................................................................... 38
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8.22 Final Completion ............................. .................................................................................. 38
8.23 Final Acceptance ............................. .................................................................................. 39
8.24 Risk of Loss ................................. ...................................................................................... 39
8.25 Use of Improvements During Construction ..... ................................................................. 39
SECTION 9 – RESPONSIBILITIES OF THE CONTRACTOR
9.01 Contractor’s Responsibility for the Work ..... ...................................................................... 40
9.02 Contractor’s Responsibility for Subcontracted Work ......................................................... 40
9.03 Superintendent ............................... ................................................................................... 40
9.04 Character of Workers ......................... ............................................................................... 40
9.05 Laws to be Observed .......................... .............................................................................. 40
9.06 Permits and Fees ............................. ................................................................................. 42
9.07 Coordination and Cooperation ................. ......................................................................... 42
9.08 Use of Premises .............................. .................................................................................. 43
9.09 Construction Staging and Field Office ........ ....................................................................... 43
9.10 Site Security ................................ ...................................................................................... 44
9.11 Construction Water ........................... ................................................................................. 44
9.12 Project Site Maintenance ..................... ............................................................................. 44
9.13 Preservation of Property ..................... ............................................................................... 46
9.14 Protection of Buried Utilities ............... ............................................................................... 47
9.15 Protection of Bridges ........................ ................................................................................. 47
9.16 Protection of Traffic Signal Facilities ...... ........................................................................... 47
9.17 Restoration of Adjacent and Existing Improveme nts ......................................................... 48
9.18 Archeological Remains ........................ .............................................................................. 48
9.19 Access to Private Property ................... ............................................................................. 48
9.20 Traffic Control and Public Convenience ....... ..................................................................... 48
9.21 Safety ....................................... ......................................................................................... 51
9.22 Patent Fees or Royalties ..................... .............................................................................. 53
9.23 Advertising .................................. ....................................................................................... 53
9.24 Antitrust Claims ............................. .................................................................................... 53
9.25 Audit and Examination of Records ............. ....................................................................... 53
9.26 Notice of Entrance ........................... .................................................................................. 54
9.27 Additional and Emergency Protection .......... ..................................................................... 54
9.28 Placing Portions of Work in Service .......... ........................................................................ 54
9.29 Rights of Way ................................ .................................................................................... 54
SECTION 10 – MEASUREMENT AND PAYMENT
10.01 Measurement of Quantities for Unit Price Work ................................................................ 55
10.02 Bid Items ................................... ........................................................................................ 55
10.03 Bid Quantities .............................. ...................................................................................... 55
10.04 Progress Payments ........................... ................................................................................ 56
10.05 Retentions .................................. ....................................................................................... 57
10.06 Final Payment ............................... .................................................................................... 58
10.07 Acceptance .................................. ...................................................................................... 59
10.08 Compensation for Extra Work Omitted ......... ..................................................................... 59
10.09 Compensation to City for Extension of Time .. ................................................................... 59
10.10 Claims ...................................... ......................................................................................... 59
10.11 Time Limit on Claims ........................ ................................................................................. 59
10.12 City Response to Claims ..................... .............................................................................. 60
10.13 Appeal of Engineer’s Decision ............... ........................................................................... 60
SECTION 11 – GUARANTEE
11.01 Contractor’s Guarantee ...................... ............................................................................... 61
11.02 Correction of Defective Work During the Guara ntee Period ............................................. 61
* * *
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GENERAL PROVISIONS
SECTION 1 – TERMS AND DEFINITIONS
1.01 Terms – Unless otherwise stated, the words “di rected, required, permitted, ordered, instructed, designated, considered necessary, prescribed, approved, acceptable, satisfactory,” or words of like meaning, refer to actions, expressions, and prerogatives of the Engineer.
1.02 Definitions – Except as amended or supplemente d, whenever in the Contract Documents the following terms are used, the intent and meaning shall be interpreted as follows:
Agreement - The written contract documents between the City and the Contractor covering the performance of the work.
As Shown, As Indicated, As Detailed - Where these w ords or words of similar import, are used, it shall be understood that reference to the drawings accompanying these specifications is made unless stated otherwise. Where "As Directed", "As Permitted", "Approved", or words of similar import, are used, it shall be understood that the direction, requirement s, permission, approval, or acceptance of the Engin eer is intended unless stated otherwise. As used herei n, "Provide" shall be understood to mean "Provide Complete in Place" that is, "Furnish and Install”, and "Install" shall mean the installation complete in place of an item of equipment furnished by the City.
ASTM - American Society for Testing and Materials specifications.
AWWA - American Water Works Association and its St andard Specifications.
Addenda - Written or graphic instruments issued pr ior to the opening of bids which clarify, correct or change the bidding documents or the Contract Documents.
Bid - The offer or proposal of the bidder submitte d on the prescribed forms setting forth the prices for the work to be performed.
Bid Forms - Includes the Bid Schedule, Designation of Subcontractors, Bidders Statement of Responsibility, Bidder’s Non-Collusion Affidavit, Bid Security, and all other information requested by the Bid Proposal Documents.
Bidder – Any individual, firm, partnership, corpora tion, or combination thereof submitting a bid for the work, acting directly or through a duly authori zed representative. After the City awards the Cont ract, the term “Bidder” shall be equivalent to the term “Contractor” for the purpose of identifying the Contractor’s rights and obligations under the Contract Documents.
Bidding Documents - The Notice Inviting Sealed Pro posals, Instruction to Bidders, Bid Proposal forms and Bidders Bond.
Bonds - Bid, performance, labor and material, and warranty bonds and other instruments of security.
Change Orders – A written order by the Engineer to the contractor making changes in the plans or specifications which is signed by the Contractor and City authorizing an addition, deletion or revision in the work, with possible adjustment in the contract pric e or the contract time, issued on or after the effe ctive date of the Agreement. If the change involves items for which there is no contract unit price, the order shall so state and stipulate that the changes shall be performed as extra work or work omitted.
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City - The City of San Carlos acting through the City Council or any other board, body, official(s) to which or to whom the power belonging to the City Co uncil has been properly delegated.
City Regulations - All written laws, rules, and po licies established by the City, including those set forth in the General Plan, San Carlos Municipal Cod e, ordinances, resolutions, policies, procedures, a nd City design documents (including the Standard Speci fications, design standards, and relevant Public Facility Master Plans).
Code – The terms Government Code, Labor Code, etc., refer to codes of the State of California.
Contract – See definition for “Agreement”.
Contract Documents - See Agreement, Section 2.1, “ List of Contract Documents and Precedence”.
Contract Drawings or Plans - All drawings which ma y have been prepared by or in behalf of the City, as a basis for proposals, when duly signed an d made a part of this contract by incorporation or reference, all drawings submitted in pursuance of t he terms of this contract by the successful bidder with their proposal and by the contractor to the City an d reviewed by the Engineer; and all drawings submit ted by the Engineer to the contractor during the progress of the work as provided for herein.
Contract Price - The total amount of money for which contract is awarded and as amended.
Contract Time - The number of days or the date sta ted in the contract as the duration for completing work.
Contract Unit Price - The Contractor’s original bi d for a single unit of an item of work in the proposal.
Contractor - An individual, partnership, corporatio n, developer, joint venture, subdivider or other legal entity entering into a contract or agreement with the City to perform the work covered by this contract, and their authorized agents or legal representative s. After the City awards the Contract, the term “Contractor” shall be equivalent to the term “Bidde r” for the purpose of identifying the Contractor’s rights and obligations under the Contract Documents.
Day or Days - Unless herein otherwise expressly defined, shall mean a calendar day of twenty-four hours each.
Defective Work - Work that is unsatisfactory, faul ty, omitted, incomplete, deficient, or does not conform to the requirements of the Contract Documents, directives of the Engineer, or requirements of any inspection, reference standard, test, or approval s pecified in the Contract Documents, or has been damaged prior to the Engineer’s recommendation of f inal acceptance. See General Provisions Section
6.01, “Materials and Workmanship”.
Directive – Any document, signed by the City, with instruction to the Contractor pertaining to the completion of a project objective; including, but n ot limited to responses to requests for information , clarifications, letters of instruction, the notice of award and the notice to proceed.
Engineer - The Engineer duly and officially appoint ed by the City to represent the City and to observe the work of construction under this contract, acting personally or through agents or assistants duly authorized by the Engineer, such agents or assistan ts acting within the scope of the particular duties entrusted to them.
Extra Work - Performance or furnishing of work or m aterial found necessary for the proper completion of the improvements, the payment of whic h is not covered by any item of the bid schedule an d for which no means of payment, direct or indirect, has been provided in the contract.
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Final Completion - The point at which work has bee n completed in accordance with the contract documents, plans and specifications to the satisfac tion of the Engineer and there are no items of work remaining to be completed. See General Provisions, Section 8.22, “Final Completion”.
Force Account Work – Force account work is a method of compensation utilized to pay for extra work typically needed to overcome unanticipated work, resulting from the project work scope, necessary to complete the project work scope that cannot be well defined prior to the start of extra work. General Provision, Section 5.08 “Change Orders“ establishes the specific methods of compensation for labor, materials and equipment used to perform the force account work.
Greenbook - The Standard Specifications and Plans written and promulgated by Public Works Standards, Inc., entitled “Standard Specifications for Public Works Construction”, and “Standard Plans for Public Works Construction”, current editions.
Hold Harmless - Agreement by one party to bring no claim for negligence, breach of contract, indemnity or otherwise against another party. See Agreement Section 17, “Indemnification”.
Inspector - The engineering or technical inspector(s) duly authorized or appointed by the Engineer or City, limited to the particular duties entrusted to them.
Liquidated Damages - The amount of dollars assessed for each and every calendar day required to complete the contract in excess of the contract time. See General Provisions, Section 8.18, “Liquidated Damages”.
Losses - Any and all losses, costs, liabilities, cl aims, damages, and expenses, including, without limitation, reasonable attorneys’ fees and expenses.
Manual of Uniform Traffic Control Devices (MUTCD) or California Manual of Uniform Traffic Control Devices (CAMUTCD) – The latest edition of the California Manual of Uniform Traffic Control Devices.
Modification – Modifications to the Agreement are e xecuted by change orders, and may only be issued after the effective date of the contract.
Notice - Any notice allowed or required to be give n by the City may be given by the Engineer.
Notice of Award – The written notice by the City t o the successful Bidder stating that upon completion of required conditions the City will execute the contract.
Notice to Proceed – A written notice by the City to the Contractor authorizing the Contractor to proceed with the work and fixing the date on which the contract time will start.
Plans - The contract plans and/or supplemental draw ings approved by the Engineer which show the location, character, dimensions and details of the work.
Project - The total construction of which the work performed under the Contract Documents may be the whole or a part and which may include construction by the City or by separate Contractors.
Proposal - The offer of a bidder when submitted on the proposal form, properly signed and guaranteed.
Reference Specifications - Those standards, rules, method of tests or analysis, codes, and specifications of other agencies, engineering societies, or industrial associations referred to in the Contract Documents. These refer to the current edition or amendments in effect at the time of advertising the project unless specifically referred to by edition, volume or date. Unless otherwise stated in the plans or specifications, the reference specification in effe ct shall be that edition which was in effect on the date of the Notice Inviting Bids.
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Shop Drawings - All drawings, diagrams, illustrati ons, schedules and other data which are specifically prepared by or for the Contractor to i llustrate some portion of the work and all illustra tions, brochures, standard schedules, performance charts, instructions, diagrams and other information prepared by a supplier and submitted by the Contractor to il lustrate material or equipment for some portion of the work. See General Provisions, Section 4.19, “Submittals”.
Special Provisions - Any provisions which supplement or modify these standard specifications.
Specifications – The information, directions, provi sions and requirements pertaining to the work, and contained herein including Special Provisions, Technical Specification, General Provisions, those administrative subsections of Caltrans’ Standard Sp ecification that are specifically referenced in thi s Contract and the non-administrative sections (Secti on 10 through 95) of the Caltrans’ Standard Specification dated 2010.
Standard Plans - The Standard Details of the City of San Carlos, current edition, including the Parks and Streetscape Standard Plans, current edition, identifying construction standards for the various items of work indicated and/or referred to on the plans, specifications or special provisions.
Standard Specifications - The Standard Specificatio ns of the City of San Carlos.
Standard Specifications for Public Works Construct ion - The Standard Specifications for Public Works Construction, “Greenbook”, current edition.
State - State of California.
State Standard Plans - The Standard Plans of the D epartment of Transportation of the State of California, (Caltrans’) Standard Plans dated 2010.
State Standard Specifications - The Standard Specif ications of the Department of Transportation of the State of California Caltrans’ Standard Specification dated 2010.
Subcontractor - Any individual, firm or corporation having a direct contract with the Contractor or with any other Subcontractor for the performance of a part of the work at the site. Unless otherwise specifically provided, the term Subcontractor inclu des Subcontractor of any tier, suppliers, manufactu rers and distributors. See Section 3.07 of the General Provisions.
Substantial Completion – When the work (or a speci fied part thereof) has progressed to the point where it is sufficiently complete and in accordance with the Contract Documents. See General Provisions, Section 8.20, “Substantial Completion”.
Superintendent – The executive representative of the contractor responsible for the site supervision of the work at all times during progress, authorize d to receive and fulfill instructions from the Engi neer and to accept orders for changed and extra work.
Surety - Any individual, firm or corporation, boun d with and for the Contractor for the acceptable performance and completion of the work, and the satisfaction of all obligations incurred.
Surveyor - A land surveyor licensed in the State o f California.
Unbalanced Bid - See Materially Unbalanced Bid and Mathematically Unbalanced Bid.
Work - The construction and services required by the Contract Documents as amended by contract modifications, whether completed or partially compl eted, including all labor, materials, equipment, to ols, and services provided or to be provided, by the Con tractor to fulfill the Contractor’s obligations. T he work may constitute the whole or a part of the project
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Working Day – Any day except Saturday, Sunday, Holidays observed by the City, or days in which the Contractor is entitled to an excusable delay. Holidays observed by the City are: Thanksgiving, day after Thanksgiving, Christmas Day, New Year’s Day, Martin Luther King Jr. Day, President’s Day, Memorial Day, Independence Day, Labor Day, and Veteran’s Day. See General Provisions, Section 8.19, “Delays and Extension of Time”. In addition, at the option of the Engineer, the contractor may be required to sus pend all work and activities during the City’s annual Holiday Closure in late December and early January of each year. No work shall be done during this suspension except such work as is necessary for the proper ca re and protection of work already performed, or except in case of an emergency, and in any case, only wit h prior written permission of the Engineer. This sus pension of work will be at no cost to the City. Wo rking days will not be assessed during this suspension of work.
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SECTION 2 – PROPOSAL REQUIREMENTS AND CONDITIONS
2.01 General - Bidders may obtain complete sets of the Contract Documents, including the proposal forms to be used for bidding, at the locat ion designated in the Notice to Bidders. Bidders s hall use complete sets of Contract Documents in the preparation of bids. The City makes copies of the Contract Documents available, on the above terms, for the sole purpose of obtaining Bids for the work and does not confer a license or grant permission for any other use of the Contract Documents.
2.02 Proposal Forms – The portion of the Contract D ocuments entitled “Bid Proposal” focuses the Bidders attention on the requirements for submi tting a proposal, including the Notice to Bidders, and the Bid Proposal Forms.
Bids are required for the entire work described her ein and shall be submitted on the blank forms prepared by the City and provided herein. The Bid Proposal submitted to the City shall consist of the completed Bid Schedule, Designation of Subcontracto rs, Bidders Statement of Responsibility, Bidder’s Non-Collusion Affidavit, Bidder’s Qualifications, B idders References, Signature of Bidder, Bid Guarant y, and all other information requested by the Bid Proposal documents.
All proposals shall type or print legibly in ink th e proposed prices both in writing and in figures an d shall be signed, with address included, by the bidder or the bidder's authorized representative. Corrections must all be individually initialed by the Bidder. Bidder shall not modify or qualify the Bid Forms in any manner.
The Bid Forms shall be signed by a person or persons legally authorized to bind the Bidder to the Contract. The individuals signing each document sh all warrant that they are authorized to bind the le gal entity of the Bidder. Proposals made by individual s must show the individual's signature and post off ice address; if made by a firm or partnership and the s ignature of one or all of the partners must be show n.
Proposals submitted by corporations must show the n ame and post office address of the corporation, the name of the state, under whose laws the corporation is chartered, and the signature and title of the person signing on behalf of the corporation.
2.03 Qualifications of Bidders - Each bidder shall be licensed as specified in the Notice to Bidders and in accordance with the provisions of Ch apter 9, Division 3, of the Business and Profession s Code, State of California, and shall be skilled and regularly engaged in the general class or type of work called for under this contract.
It is the intention of the City to award a contract only to a bidder who is able to furnish satisfactory evidence that they have the requisite experience an d ability and that the bidder has sufficient capita l, facilities and plant to enable them to prosecute th e work successfully and promptly, and to complete i t within the time set forth in the contract.
In determining the degree of responsibility to be c redited to a bidder, the City will weigh any evidence indicating the bidder, or personnel guaranteed to be employed in responsible charge of the work, has satisfactorily performed other contracts of like nature and magnitude.
2.04 Rejection of Proposals Containing Alterations, Erasures, or Irregularities - Proposals may be rejected if they show any alterations of form, a dditions not called for, conditional or alternative bids, incomplete bids, irregularities of any kind, or corrections and erasures without initials by the Bidder.
2.05 Submission of Bids - All Bid Forms, including all documents required to be submitted with the Bid, shall be enclosed in a sealed opaque envel ope. The envelope shall be clearly marked on its f ace with the Bidder’s name and address, and the notation “SEALED BID ENCLOSED, CITY OF SAN CARLOS”, with an identification of the project name and number as identified in the Notice to Bidders. If the Bid is sent by mail, the sealed envelope shall be enclosed in a separate mailing envelope. Oral, telephonic, facsimile, telegraphic, or electronically transmitted Bids are invalid and will not be accepted.
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Bids may be mailed or delivered by messenger. It i s the Bidder’s responsibility alone to ensure that the Bid is received prior to the bid opening d eadline at the place specified in the Notice to Bid ders.
Whether or not bids are opened exactly at the time fixed in the public notice inviting bids, any bid r eceived after that time shall be returned unopened.
2.06 Approximate Estimate - The quantities listed in the bid schedule are appr oximate only, supplied as a general indication of the scope of wo rk and to be used as a basis for comparing bids. T he City does not expressly or by implication agree tha t the actual amount of work will correspond therewi th, and reserves the right to increase or decrease the amount of any class or portion of the work, or to d elete any portions of the work in their entirety, from the quantities listed on the bid schedule, as may be deemed necessary or advisable by the Engineer.
2.07 Examination of Plans, Specifications and Work Site - Bidder shall examine carefully the plans, specifications, proposal and contract forms, and the physical site of the work contemplated, regardless of if a site walk or pre-bid meeting has been scheduled by the City or not. It will be ass umed that the bidder has investigated and is aware of th e conditions to be encountered in carrying out the proposed work, and is fully satisfied as to the sco pe, character, quality, quantity and requirements o f the proposed work, and the submission of a bid will be an acknowledgement of that assumption.
The bidder shall receive no additional compensation for obstacles or difficulties due to surface or subsurface conditions actually encountered. Where investigations of surface or subsurface conditions have been made by the City in respect to foundation or other structural design, and that information i s shown in the plans, said information is included only for the convenience of bidders. The City assumes no responsibility whatsoever as to the sufficiency or accuracy of borings, or of the log of test borings or other investigations or tests, or of the interpretation t hereof; there is no guaranty, warranty or represent ation, express or implied, that the conditions indicated thereby in fact exist or are representative of those existing throughout the work. Such information shall be use d as a basis for bids at the bidder's own and sole risk; making such information available to bidders is not to be construed in any way as a waiver of the othe r provisions of this paragraph, and bidders must satisfy themselves through their own investigation as to the surface and subsurface conditions to be encountered at the site. By submitting a Proposal, the Bidder has certified that they have examined all items indicated in Section 2.07, "Examination of Plans, Specifications, and Site of the Work."
Each proposal shall be enclosed in a sealed envelop e and endorsed as specified in the Notice Invited Sealed Proposals. Bidders are warned the proposals containing irregularities of any kind, including erasures, omissions, conditions, alterations, or additional proposals may be rejected.
2.08 Withdrawals of Proposals - Any proposal may be withdrawn at any time prior to the time fixed in the Notice Inviting Sealed Proposals for t he opening of bids, provided that a request in writ ing, executed by the bidder or their duly authorized rep resentative, for the withdrawal of such bid, is fil ed with the City. The withdrawal will not prejudice the right of a bidder to file a new proposal.
2.09 Proposal Guaranty - Each proposal shall be accompanied by either a cert ified check, cashier's check, or bidder's bond of a surety company acceptable to the City in an amount not less than ten percent (10%) of the bid amount, and shall be made payable to the City.
2.10 Disqualification of Bidders - More than one pr oposal from an individual, firm or partnership, a corporation, or an association under the same or different names will not be considered. Reasonable grounds for believing that any bidder is interested in more than one proposal for the work will be the cause of the rejection of all proposals in which such bid der is interested. If there is a reason to believe that collusion exists among the bidders, none of the participants in such collusion will be considered. Proposals in which the prices obviously are unbalanced may be rejected.
2.11 Bid Protest Procedures – Any protest of the pr oposed contract award shall be submitted in writing to the City Clerk no later than 5:00 p.m. o n the fifth (5 th ) business day following the date of the bid
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opening. If the fifth day falls on a weekend or ho liday, the last day of the protest period shall be the first working day following the fifth day.
The protest must include the name, address, and telephone number of the person representing the protesting party. In addition,
(a) The party filing the protest must have submitt ed a bid for the Project. A Subcontractor of a party filing a bid for the project may not submit a bid protest.
(b) The protest must contain a complete statement of the basis for the protest, and refer to the specific portion of the Contract Documents or the s pecific statute that forms the basis for the protest.
(c) The party filing the protest must concurrentl y transmit a copy of the protest to the proposed awardee.
Any bidder’s failure to fully comply with these pro cedures shall constitute a waiver of any right to further pursue a bid protest, including filing of a challenge of the award pursuant to the California Public Contract Code, filing of a claim pursuant to the Ca lifornia Government Code, or filing of any other le gal proceedings.
The City shall review all timely protests prior to the award of contract. The City shall not be required to hold an administrative hearing to consider any protests, but may do so at its option. The City Council or the City Manager as designee if the authority to aw ard the contract has already been granted by the Ci ty Council, may either reject the protest and award th e project to the lowest responsible bidder or accep t the protest and award the project to the next lowest re sponsible bidder. Nothing in this section shall be construed as a waiver of the City Council’s right to reject all bids.
2.12 List of Subcontractors - In accordance with th e provisions of Section 4104 of the Public Contract Code, each proposal shall list the name, a ddress and license number of each subcontractor to whom the bidder proposes to sublet portions of the work. A subcontractor is defined as one who contracts with the contractor to furnish materials and labor, or labor only, for performance of work. Subcontra ctors shall be listed on the form provided in the Bid Proposal.
2.13 Required Contractor and Subcontractor Registra tion - In accordance with Labor Code Section 1725.5 and 1771.1, the contractor and all s ubcontractors shall be registered with the Californ ia Department of Industrial Relations (DIR) prior to t he bid opening. All 2nd and lower tier subcontract ors working on the project shall be registered with the Department of Industrial Relations prior to the work being performed. An inadvertent error in listing a subco ntractor who is not registered may not be grounds f or considering the bid non-responsive providing that any of the provision in Labor Code Section 1771.1(c) are satisfied.
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SECTION 3: REVIEW OF BIDS, CONTRACT AWARD AND EXECUTION
3.01 Public Bid Opening and Initial Review - Bids w hich have been submitted in accordance with the requirements of the Bidding Documents, and which are received on or before the bid deadline will be opened publicly, and the dollar amounts of each bid shall be read aloud.
The City shall have the right to reject all bids. The City shall have the right to reject any bid not accompanied by the required bid security or any oth er item required by the Bidding Documents, or a bid which is in any other way incomplete or irregular. The City shall have the right to waive irregularit ies in a bid, and to award the Contract to the Lowest Respon sible Bidder (as determined by the City), only if t he irregularities are non-material and inconsequential.
3.02 Determination of Lowest Responsible Bidder - C riteria for determining low bid in all contracts with the City involving an expenditure of $5,000.00 or more shall be determined as the “Lowe st Monetary Bidder” on the basis of the Engineer’s approximate estimate of the quantities of work to be done as set forth in the Bid Schedule, in accordance with the calculation criteria set forth on the bid.
After the Lowest Monetary Bidder has been determined, the Engineer shall review that Bidder’s bid in order to determine whether or not that Bidder is the “Lowest Responsible Bidder.” The term Lowest Responsible Bidder shall mean the Lowest Monetary B idder whose bid is responsive, and who is responsible to perform the work, as required by the Contract Documents.
The term “responsive” is defined by California law, but generally means that the bid has been prepared and submitted in accordance with the Biddi ng Requirements. The term “responsible” is defined by California law, but generally means that the Bid der is able to demonstrate that it possesses: (1) t he capacity to perform the work required by the Contra ct Documents with respect to financial strength, resources available, and experience; and (2) the in tegrity and trustworthiness to complete performance of the work in accordance with the Contract Documents.
The City will make its determination of responsibility based upon information submitted by Bidders contained in the Bidders Qualifications and Bidders References included in the Bid Forms and, if necessary, through interviews with previous cities, clients, d esign professionals, or subcontractors with whom th e Bidder has worked. In determining whether or not a Bidder is responsible, the City may consider the following factors in relation to the work to be performed for this Project:
(a) Demonstrated financial strength including, but not limited to, resources available, bonding capacity, and available insurance.
(b) Demonstrated safety record including, but not l imited to, Experience Modification Rate. (c) Successful completion of projects of similar sc ope and size. In reviewing this factor, the City may consider elements including, but not limit ed to, contract amount of completed projects, experience on public works projects, expe rience implementing prevailing wage certified payroll requirements, timeliness of perfo rmance and, if necessary, evaluation of the Bidder’s work by previous cities, clients, design professionals, or subcontractors. (d) Sufficiency of contract administration and cons truction management systems including, but not limited to, proposed scheduling tools, proposed subcontract forms, proposed progress payment applications, and proposed certification of payroll documents. (e) History of claims, litigation, termination or d isqualification from projects.
If the Engineer finds that the Lowest Monetary Bidd er submitted a responsive Bid and that the Bidder is responsible, then that Bidder shall be deemed the apparent “Lowest Responsible Bidder,” and the Engineer shall report the findings to the City Council.
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If the Engineer finds that the Lowest Monetary Bidd er’s bid is not responsive, or that the Lowest Monetary Bidder is not responsible, then the Engine er may review the responsiveness and responsibility of the next Lowest Monetary Bidder. If the Enginee r finds that the next Lowest Monetary Bidder is responsive and responsible, then that next lowest B idder shall be deemed the apparent “Lowest Responsible Bidder,” and Engineer shall report its findings as recommendations to the City Council. T his process may continue until the Engineer finds the L owest Monetary Bidder which is also responsive and responsible.
In the event that one or more Low Monetary Bidders are found by the Engineer to be non- responsive or non-responsible, those Bidders will b e given notice and a reasonable opportunity to pres ent additional relevant evidence to the Engineer for consideration, within five (5) working days after the Bidder receives the notice.
All findings by the Engineer shall be reported as r ecommendations to the City Council. The City Council reserves the right to reject any or all Bid s, and to waive any irregularity. No Bid shall be binding upon the City until after the Agreement is signed b y both the Contractor and the City. If the City Co uncil determines that it is in the City’s best interest t o award the Agreement, a Notice of Award shall be s ent to the Lowest Responsible Bidder as determined by the City Council. The City Council’s decision shall be final.
The City may investigate the responsibility and qua lifications of all Bidders to whom the award is contemplated for a period not to exceed ninety (90) calendar days after the Bid opening, during which time no bid shall be withdrawn by the Bidders. The nine ty (90) day review period may be extended upon the written request by the Engineer and written approval by the affected Bidder.
3.03 Notice of Award – Should the City decide to pr oceed with the award of contract the City shall issue a Notice of Award to the lowest responsible bidder.
3.04 Contract Execution - Within fifteen (15) calen dar days after receipt of the Notice of Award, the bidder shall submit to the City two (2) origina ls of the signed agreement, the required contract b onds and certificates of insurance. If the bidder fails or refuses to enter into a contract to do the work, then the proposal guaranty accompanying the bid shall be for feited to the City. After the Bidder has properly submitted these documents, the City will execute the Agreement and issue a Notice to Proceed.
3.05 Status of Contractor - The right of general su pervision by the City shall not make the contractor an agent of the City, and the liability of the contractor for all damages to persons or to public or private property arising from the contractor's exec ution of the work shall not be lessened because of such general supervision.
3.06 Assignment - No agreement or portion thereof m aybe assigned without consent of the Council, except that the Contractor may assign money due which will accrue to them under the Agreement.
If given written notice, such assignment will be re cognized by the City to the extent permitted by law , but any assignment of money shall be subject to all pro per setoffs and withholdings in favor of the City a nd to all deductions provided for in the Agreement. All money withheld, whether assigned or not, shall be subject to being used by the City for completion of the work, should the Contractor be in default.
Any attempt to assign or delegate the Agreement wit hout the written consent of the City shall be void and of no force and effect. Consent by the City to one assignment shall not be deemed to be consent to any subsequent assignment.
3.07 Recognition of Subcontractors - No subcontract ors will be recognized as such, and all persons engaged in the work of construction will be considered as employees of the contractor and thei r work shall be subject to the provisions of the cont ract, including specifically these general stipulat ions, the specifications and the contract drawings.
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3.08 Return of Bid Security - Within ten (10) worki ng days after the execution of the Agreement, the City will return the proposal guarantees accomp anying the proposals that are not to be considered in making the award. All other proposal guarantees will be held until the Agreement has been fully executed, after which, they will be returned to the respective bidders whose proposals they accompanied.
3.09 Forfeiture of Proposal Guaranty - If Bidder do es not properly execute the contract and submit the acceptable bonds, insurance and certifications within the specified time; this shall be just cause for the annulment of the award and the forfeiture o f the proposal guaranty to the City. The City may then award the contract to next Lowest Responsible Bidder. The forfeited proposal guaranty may be utilized by the City in accordance with Public Contract Code, Sections 20170 through 20174.
3.10 Contract Bonds - Before execution of the contr act by the City, the Contractor shall file with the City surety bonds satisfactory to the City in the amounts, and for the purposes, noted below. Said bond shall be on the form furnished by the City herein.
(a) Performance Bond - The contractor shall furnish and bear the cost o f a bond of a surety company acceptable to the City, which bond is condi tioned upon the faithful performance of all covenants and stipulations under this contract within the time prescribed, in a manner satisfactory to the City, and that all materials and workmanship will be free from original or developed defects. The amount of the bond shall be one hundred percent (100%) of the total contract price; as such sum is set forth in the agreement.
Said bond shall be on the form furnished by the City herein.
As a condition precedent to satisfactory completion of this contract, an amount equal to ten percent (10%) of the estimated contract cost shall hold good for the period specified in said bond after completion and acceptance of the work by the City.
(b) Labor and Material Bond – The contractor shall furnish and bear the cost o f a bond of a surety company acceptable to the City in the sum no t less than one hundred percent (100%) of the total contract price, as such sum is set forth in the agreement, for the payment in full of all persons, companies, or corpo rations who perform labor upon or furnish materials to be used in the work under this contract, in accordance with the provisions of Section 4200 to 4208, inclusive (Chap ter 3, Division 5), of the Government Code of the State of California, and any acts amend atory thereof. The bond shall be maintained by the Contractor in full force and effe ct until the work is accepted by the City and until all claims for materials and labor are paid.
Said bond shall be on the form furnished by the Ci ty herein. (c) Warranty Bond - The Contractor shall furnish a warranty bond in the amount of ten percent (10%) of the final contract price (total cost inclu ding change orders) to guaranty his work for two (2) years after acceptance of the work by the City Council.
Bonds shall be duly executed by a responsible corpo rate Surety, licensed and authorized to issue such bonds in the State of California and secured through an authorized agent with an office in California. Each bond shall be s igned by both the Contractor and Surety and the signature of the authorized agent of the Surety shall be notarized.
The Contractor shall pay all bond premiums, costs a nd incidentals. Should any bond become insufficient due to an increase in the contr act amount, the Contractor shall obtain supplemental bonding within ten (10) days.
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Should any Surety at any time be unsatisfactory to the City, notice will be given the Contractor to that effect. No further payments shall be deemed due or will be made under the Agreement until a new Surety shall qualify and be accepted by the City.
Changes in the work, or extensions of time, made pu rsuant to the Agreement, shall in no way release the Contractor or Surety from their obl igations. The requirement for notifying the Surety of such changes or extensions shall be waived by the Surety.
3.11 Notification of Surety Companies - The surety companies shall familiarize themselves with all conditions and provisions of this contract and they waive the right of special notification of any change or modification of this contract or of extension of time, or of decreased or increased work, or of the cancellation of the contract, or of any other act(s ) by the City or City's authorized agents, under th e terms of this contract, and failure to so notify the afor esaid surety companies of changes shall in no wise relieve the surety companies of their obligation under this contract.
3.12 Power of Attorney - Attorneys-in-fact who sign bid bonds or contract bonds must file a certified and effectively dated copy of their Power of Attorney with each bond.
3.13 Insurance Requirements - Contractor shall prov ide at their own cost and expense from contract award date to acceptance of the work covered by the contract:
(a) Workmen's Compensation and Employer's Liability Insurance of not less than the amount shown in the Special Provisions for all of their employees to be engaged in the work under this contract. Should any such work be sublet, the contractor shall require each of their subcontractors at any tier similarly to provide Wor kmen's Compensation and Employer's Liability Insurance, all in strict compliance with Federal and State laws. (b) Personal Injury, Bodily Injury and Property D amage Liability Insurance (including automobiles, products and/or completed operations coverage) and Aircraft and Watercraft Bodily Injury Liability and Property Damage Liability Insurance if contractor uses owned or non-owned water aircraft in their operation, with Personal Injury and Bodily Injury (including death resulting therefrom) of not less than a combi ned Personal Injury and Property Damage Liability limit of not less than the amount shown in the Special Provisions. Should any work covered by the contract be sublet contract or shall require each of their subcontractors of any tier similarly to provide the aforesaid coverages. (c) All Risk (excluding Earthquake and Flood) Bui lder's Risk Insurance in an amount not less than the value of any work under this contract, exc ept for buried pipelines and appurtenances which need not be included in the ins urance value. Under the policies of insurance described above, each policy shall contai n the provision for thirty (30) days written notice submitted by registered mail from the insurance carrier(s) to the City prior to cancellation or reduction in coverage.