Sebastopol City Council
February 21, 2023

PART 3 - 98

SPECIFICATIONS
A. Measurement for payment for this bid item will be based upon, but not limited to, all labor, materials, tools and equipment including a sawcut at a joint with a clean edge, the removal of sidewalk and dowel rebar, including proper disposal, salvage, or recycling of the associated materials, and site restoration, as required per the Contract Documents. The removal will be to the nearest score mark or construction joint.

B. Payment for remove sidewalk will be made at the unit bid price per square foot (SF), which price shall constitute full compensation of all such work as required per the Contract Documents, as specified in the Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.9 6-INCH WATER MAIN (Bid Item No. 9)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment required to install 6-inch water main and appurtenances as shown on the Drawings, as based upon installing the pipeline per paragraph 1.3.C of this section, and as required per the Contract Documents.

B. Payment for 6” Water Main will be made at the unit bid price per linear foot (LF), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these specifications, and no additional allowances will be made

2.10 6-INCH GATE VALVE (Bid Item No. 10)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment required to install 6-inch gate valves and appurtenances as shown on the Drawings, as based upon installing the pipeline per paragraph 1.3 C of this section, and as required per the Contract Documents.

B. Payment for 6” Gate Valve will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these specifications, and no additional allowances will be made

2.11 ABANDON WATER MAIN (Bid Item No. 11)
A. Measurement for payment for this bid item will be based upon, but not limited to, all labor, materials, tools and equipment for the abandonment of existing water pipelines (mains and services), and appurtenances required in performing the work required per the Contract Documents. The work shall include submittal to the City of an abandonment plan, obtain approval from the City, cutting, capping and filling the mains and pipelines, and appurtenances, removal of all abandoned gate valves, and handling, hauling, and disposal of excess and/or removed concrete materials as required, and as based upon installing the pipeline per paragraph 1.3 C of this section.

B. Payment for Abandon Water Main will be made at the unit bid price per lump sum (LS), which price shall constitute full compensation of all such work as required per the Contract Documents, as specified in the Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.12 3/4-INCH SINGLE WATER SERVICE (Bid Item No. 12)
A. Measurement for payment for this bid item will be based upon, but not limited to, completion of all necessary work including furnishing, installing and maintaining all necessary equipment, labor, materials, and tools required for replacing the existing 3/4” water services with new services between the new water mains and connecting to the existing water meters per City Standards, returning to match grade and existing conditions to nearest sidewalk score mark, Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 99

SPECIFICATIONS
and all other related work per the Contract Documents, applicable City Standards, as based upon installing the pipeline per paragraph 1.3 C of this section, and as shown in the Plans.

Existing services locations shown on the plans are approximate. It is the Contractor’s responsibility to field locate and confirm service locations. It is the Contractor’s responsibility to locate and confirm service locations and elevations of tie-ins.

B. Payment for 3/4" Water Service will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.13 3/4-INCH DUAL WATER SERVICE (Bid Item No. 13)
A. Measurement for payment for this bid item will be based upon, but not limited to, completion of all necessary work including furnishing, installing and maintaining all necessary equipment, labor, materials, and tools required for replacing the existing 3/4” water services with new dual water service between the new water mains and connecting to the existing water meters per City Standards, returning to match grade and existing conditions to nearest sidewalk score mark, and all other related work per the Contract Documents, applicable City Standards, as based upon installing the pipeline per paragraph 1.3 C of this section, and as shown in the Plans. Existing services locations shown on the plans are approximate. It is the Contractor’s responsibility to field locate and confirm service locations. It is the Contractor’s responsibility to locate and confirm service locations and elevations of tie-ins.

B. Payment for Dual Water Service will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.14 FIRE HYDRANT AND LATERAL ASSEMBLY (Bid Item No. 14) A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment required to install fire hydrant, lateral assembly and appurtenances as shown on the Drawings, including but not limited to:
excavation and disposal of excavated materials; removal of rock as required; dewatering and disposal of trench groundwater; contamination awareness; tapping saddle or tee; valve; installing salvaged fire hydrant or new fire hydrant, lateral assembly; fittings as required; restrained joints, thrust blocking and harnesses as required; hot tap preparation if needed, connection to saddle or tee; valve box to grade; concrete pad; placing and compacting all required bedding and backfill including control density fill if required; trench plates as needed; testing and chlorination; temporary trench paving; blue reflective pavement marker; requirements as based upon installing the pipeline per paragraph 1.3 C of this section, and as required per the Contract Documents.

B. Payment for Fire Hydrant and Lateral Assembly will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these specifications, and no additional allowances will be made.

2.15 8-INCH SANITARY SEWER PIPE (Bid Item No. 15)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment required to construct sanitary sewer pipe 8-inch and appurtenances as shown on the Drawings, as based upon installing the pipeline per paragraph 1.3 C of this section, and as required per the Contract Documents.

Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 100

SPECIFICATIONS
B. Payment for sanitary sewer pipe 8-inch will be made at the unit bid price per linear foot (LF), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor. Work includes removal of existing abandoned utilities to facilitate completion.

2.16 6-INCH SANITARY SEWER PIPE (Bid Item No. 16)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment required to construct sanitary sewer pipe 6-inch and appurtenances as shown on the Drawings, as based upon installing the pipeline per paragraph 1.3 C of this section, and as required per the Contract Documents.

B. Payment for sanitary sewer pipe 6-inch will be made at the unit bid price per linear foot (LF), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor. Work includes removal of existing abandoned utilities to facilitate completion.

2.17 48-INCH SANITARY SEWER MANHOLE (Bid Item No. 17)
A. Measurement for payment for this bid item will be based upon but not limited to, installing complete a new manhole including, but not limited to, earthwork, demolition and disposal, complete concrete manhole base, sections, top slab, HDPE adjustment rings, couplings, boots, grout, bench, cast iron frame and cover, plugging and abandoning existing lines as indicated, pipe stub-outs, backfill, temporary and final pavement, and all labor, materials, tools and equipment in performing the work required per the Contract Documents. Adjustment of the new manholes to final grade is also included in this pay item.

B. The Contractor shall provide shop drawings, engineering calculations, and other supporting documentation as necessary for each manhole for review and approval by the Engineer prior to acceptance of the manhole structure. Submittal information shall provide verification that the horizontal and vertical alignment for each manhole and associated pipe stub-outs are consistent with the line and grade of the new trunk sewer provided on the plans and confirmed in the field by the Contractor during construction.

C. Payment for a precast sewer manhole– 48-inch will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.18 6-INCH SANITARY SEWER LATERAL AND CLEANOUT (Bid Item No. 18) A. Measurement for payment for this bid item will be based upon, but not limited to, completion of all necessary work including furnishing, installing and maintaining all necessary equipment, labor, materials, and tools required for replacing the existing 4” sewer laterals with new 6” PVC lateral between new SS mains and 18” beyond the edge of sidewalk, installing a new sewer cleanout in the sidewalk per City Standards, returning to match grade and existing conditions to nearest sidewalk score mark, and all other related work per the Contract Documents, applicable City Standards, and as shown in the Plans and as based upon installing the pipeline per paragraph 1.3 C of this section. Existing lateral locations shown on the plans are approximate. It is the Contractor’s responsibility to field locate and confirm lateral locations. It is the Contractor’s responsibility to locate and confirm lateral locations and elevations of tie-ins on the property side of the cleanouts.

Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 101

SPECIFICATIONS
B. Payment for lateral service line replacement and cleanout will be made at the unit bid price per each (EA), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.19 SLURRY SEAL SURFACE RESTORATION (Bid Item No. 19)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing all necessary equipment, labor, materials, tools, equipment and other incidentals necessary for the complete work to slurry seal Parquet Street and portion of Calder Ave., and all labor, materials, tools and equipment in performing the work required per the Contract Documents and Plans. Quantity for sealing will be measured from submitted plant delivery tags.

B. Payment for slurry seal surface restoration will be made at the unit bid price per square foot (SF), which price shall constitute full compensation of all such work as required per the Contract Documents.

C. Payment for slurry seal surface restoration shall be paid for at the contract unit price per square foot (SF), which price shall include full compensation for furnishing all plant, labor, materials, tools, equipment, water pollution prevention program, striping removal, pavement marking removal and pavement markers removal, with exception to yellow thermoplastic or paint, crack sealing, surface cleaning, protection of existing utility facilities, placing of slurry seal, protecting the slurry seal, and other incidentals for completing the work required for the installation of the slurry seal and all other related work per the Contract Documents, complete in place to the limits as shown on the Figures and as contained herein.

2.20 PERMANENT TRENCH RESTORATION (Bid Item No. 20)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing all necessary equipment, labor, materials, tools, equipment and other incidentals necessary for the complete work to pave the trenched areas including temporary paving, aggregate base material, all asphalt concrete (AC) and all subsequent and final lifts, asphalt concrete grinding, and all labor, materials, tools and equipment in performing the work required per the Contract Documents. Quantity for paving will be measured from submitted hot mix asphalt batch plant delivery tags.

B. The quantity to be paid will be the actual tonnage of asphalt placed in the final surface.

C. Payment for permanent trench restoration will be made at the unit bid price per ton (TN), which price shall constitute full compensation of all such work as required per the Contract Documents.

2.21 CURB AND GUTTER (Bid Item No. 21)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment, and doing all the work involved in constructing curb and gutter, including curing materials, forming and constructing curb openings for driveways, removing discoloring, placing expansion joint filler, rebar, constructing weakened plane joints, excavating, backfilling with Class 2 AB, and compaction, as specified in the City Standards, the Standard Specifications, as shown on the Drawings, and as required per the Contract Documents.

B. Payment for curb and gutter will be made at the unit bid price per linear foot (LF), which price shall constitute full compensation for the completion of all such work as required per the Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 102

SPECIFICATIONS
Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.22 SIDEWALK (Bid Item No. 22)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment, and doing all the work involved in constructing concrete sidewalk, including curing materials, forming, removing discoloring, placing expansion joint filler, rebar, constructing weakened plane joints, excavating, backfilling with Class 2 AB, and compaction, as specified in the City Standards, the Standard Specifications, as shown on the Drawings, and as required per the Contract Documents.

B. Payment for sidewalk will be made at the unit bid price per square foot (SF), which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the State Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.23 LANDSCAPING RESTORATION (Bid Item No. 23)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing and installing all labor, materials, tools, and equipment, and doing all the work involved in returning all disturbed landscaped areas to their original condition, including replacing landscape cobbles, concrete, shrubs, trees, fencing, sod, and related items as necessary, removing discoloring and all USA markings created within the project limits, and in relation to the project, excavating, backfilling with topsoil, and compaction, as specified in the City Standards, the State Standard Specifications, as shown on the Drawings, and as required per the Contract Documents. Contractor will be responsible for protecting existing tree(s) in place or replacement in kind (species and size) upon completion of all trenching and related works.

B. Payment for landscape restoration will be made at the lump sum (LS) price, which price shall constitute full compensation for the completion of all such work as required per the Contract Documents, as specified in the Standard Specifications and these special provisions, and no additional allowances will be made therefor.

2.24 CITY MONUMENT (Bid Item No. 24)
A. Measurement for payment for this bid item will be based upon, but not limited to, furnishing all necessary equipment, labor, materials, tools, equipment, excavation, backfill, concrete, monument casing, surveyor marker disk, monument box, asphalt or concrete pavement and mortar, hauling and disposal of materials, surveying, and filing of records for the completion of resetting survey monuments, and all other incidentals necessary for the complete work to remove and replace City Monuments, per the Contract Documents and Plans.

B. Payment for City Monuments will be made at the unit bid price per each (EA), which price shall constitute full compensation of all such work as required per the Contract Documents.

PART 3 - EXECUTION
Not Used.

END OF SECTION
Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 103

SPECIFICATIONS
SECTION 01 30 00

ADMINISTRATIVE REQUIREMENTS
PART 2 GENERAL

1.1 SUBMITTALS
A. Statement of Qualification (SOQ) for land surveyor or professional engineers employed by the Contractor in the work.

B. Photographs and other records of examination, as required herein.

1.2 OTHER WORK
A. Coordination of Contractor’s Work with Others: Refer to Section 01 10 00, “Summary of Work,” for coordination of Contractor's Work with City, the Engineer, other Contractors, or other parties.

1.3 UTILITIES
Notify applicable utility providers:

A. Prior to commencing Work,
B. If damage occurs, or
C. If conflicts or emergencies arise during Work.

D. Prior to connecting to any existing structure or pipeline carrying wastewater, water, gas, storm water, or other material, the Contractor shall prepare and have approved by the Engineer his detailed plan on how the connection may be made without causing an uncontrolled discharge resulting in contamination of the soil or groundwater. By reviewing and approving the plan, the City does not accept responsibility for the adequacy thereof nor for any damages to public or private property caused by the Contractor.

1.4 PROJECT MEETINGS
A. General:

1. Schedule meetings throughout the progress of the Work. City or its representative will prepare meeting agenda and distribute with written notice of each meeting, record minutes to include significant proceedings and decisions, and reproduce and distribute copies of minutes within one day after each meeting to participants and parties affected by meeting decisions.

2. Representatives of City, Contractor, and Subcontractors shall attend meetings, as needed.

B. Preconstruction Conference:

1. A preconstruction conference attended by the Contractor, the Engineer, City staff and others as appropriate will be held to discuss the WORK in accordance with the applicable procedures specified in Section 01 10 00, “Summary of Work.” All subcontractors are required to be in attendance when safety issues and safety training requirements are presented.

2. Attendees may include but not be limited to:
a. Engineer and other City representatives.
b. Contractor's resident superintendent.
c. Contractor's quality control representative.

Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

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SPECIFICATIONS
d. Contractor’s safety program representative.
e. Subcontractors' representatives whom Contractor may desire or Engineer may request to attend.
f. Engineer's representatives.
g. Utility agencies’ representatives.
h. Others as appropriate.

C. Progress Meetings:

1. Schedule weekly progress meetings at the site. Conduct weekly meeting to review Work progress, progress schedule, submittal submissions schedule, Application for Payment, contract modifications, and other matters needing discussion and resolution.

2. Attendees will include:
a. Engineer and other City representatives.
b. Contractor, and appropriate Subcontractors and Suppliers. c. Engineer's representative(s).
d. Others as appropriate.

D. Quality Control and Coordination Meeting(s):

1. Schedule on a regular basis and as necessary to review test and inspection reports, and other matters relating to quality control of Work and work of other contractors.

2. Attendees will include Engineer and other City Representatives, Contractor, Contractor's designated quality control representative, selected Subcontractors and Suppliers, and Engineer's representatives.

E. Pre-installation Meetings:

1. When required in individual specification sections, convene at site prior to commencing Work of that section.

2. Require attendance of entities directly affecting, or affected by, Work of that section.

3. Notify the Engineer 5 days in advance of meeting date.

4. Provide suggested agenda to the Engineer to include reviewing conditions of installation, preparation and installation or application procedures, and coordination with related Work and work of others.

F. Other Meetings: In accordance with Contract Documents and as may be required by City and Engineer.

1.5 SEQUENCE OF WORK
A. Include the Milestones and sequences of Work specified herein as a part of the progress schedule required under Section 01 32 16, “Construction Progress Schedules.” B. Construct Work in stages to allow for City continuous occupancy during construction.

Coordinate construction schedule and operation with the City.

C. Be responsible for temporary connections and structures required to maintain City operations.

Sequences other than those specified will be considered by Engineer, provided they afford equivalent continuity of operations.

D. Perform Work continuously during critical connections and changeovers, and as required to prevent interruption of City operations.

E. Coordinate proposed Work with the Engineer and facility operations personnel before effecting unit shutdowns. Under no circumstances cease Work at the end of a normal working day if such actions may inadvertently cause a cessation of any facility operating process, in which case, remain onsite until necessary repairs are complete.

F. Do not close lines, open switches, or take other action which would affect the operation of existing systems, except as specifically required by the Contract Documents and after approval Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 105

SPECIFICATIONS
of the Engineer. Such actions will be considered by City and Engineer upon one week written notice to the Engineer. Contractor shall not operate any City water valves.

1.6 ADJACENT FACILITIES AND PROPERTIES
A. Examination:

1. After Effective Date of the Agreement and before Work at site is started, Contractor, Engineer, and affected property owners and utility owners shall make thorough examination of pre-existing conditions including existing buildings, structures, pipelines, and other improvements in vicinity of Work, as applicable, which might be damaged by construction operations.

2. Contractor shall take two sets of photographs and videotape pre-existing conditions prior to the start of the work and submit to the Engineer. One set of photographs and videotape shall be given to the Engineer. Periodic reexamination shall be jointly performed to include, but shall not be limited to, cracks in structures, settlement, leakage, and similar conditions. Include public roads and improvements to adjacent private property as part of preexisting condition documentation.

3. B. Documentation:

1. Submit two copies of photographs, videotapes and other records documenting examination for Engineer’s approval.

2. These observations and photographs and videotapes are intended for use as indisputable evidence in ascertaining whether and to what extent damage occurred as a result of Contractor's operations, and are for protection of adjacent property owners, utility owners, Contractor, and City.

1.7 OWNER'S (City) OCCUPANCY
City will occupy the premises during the entire period of construction for the conduct of its normal operations. Cooperate with City in all construction operations to minimize conflict and to facilitate City usage.

1.8 SITE SECURITY
Contractor shall coordinate with the Engineer so site security is maintained at all times.

Contractor shall take whatever measures are necessary to maintain site security, including the use of temporary fencing and gates if required. Contractor shall be completely responsible for the construction site security and for any vandalism or theft occurring thereto.

1.9 OWNER (City) FACILITIES
A. Operation and Shutdown of Existing Facilities:

1. Continuous occupancy of City facilities is of critical importance. Schedule and conduct activities to enable City access to existing facilities continuously, unless otherwise specified.

2. Conduct Work outside regular working hours on prior written consent of Engineer in accordance with Section 01 32 16, “Construction Progress Schedules,” to meet Project schedule and avoid undesirable conditions.

3. Do not proceed with Work affecting a facility's operation without obtaining Engineer’s advance approval of the need for and duration of such Work.

4. Contractor shall not operate any City water valves.

B. Damage to Existing Facilities
Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 106

SPECIFICATIONS

1. The Contractor shall be responsible for restoring, repairing, or replacing City facilities damaged by the Contractor, to the satisfaction of the City.

1.10 PHYSICAL CONDITIONS
A. Exercise reasonable care to verify the location of existing subsurface structures and underground facilities, proceeding in accordance with Section 01 10 00, “Summary of Work” and of other applicable sections of the Specifications.

B. Thoroughly check adjacent areas subject to excavation by visual examination (and by electronic metal and pipe detection equipment, as necessary) for indications of subsurface structures and underground facilities.

C. Make exploratory excavations where existing underground facilities or structures may potentially conflict with proposed underground facilities or structures. Conduct exploratory excavations sufficiently ahead of construction to avoid possible delays to Contractor's Work.

1.11 REFERENCE POINTS AND SURVEYS
A. Location and elevation of benchmarks are shown on the Survey Control Diagram contained in the Drawings.

B. Dimensions for lines and elevations for grades of structures, appurtenances, and utilities are indicated on the Plans, together with other pertinent information required for laying out Work. If conditions vary from those indicated, Contractor shall notify the Engineer immediately.

C. City and/or Engineer may perform checks to verify accuracy of Contractor's layout Work and that completed Work complies with the Contract Documents.

D. Any existing survey points or other control markers not identified for replacement that are destroyed shall be replaced by a Land Surveyor licensed in the State of California and approved by City. Replacement shall be at the Contractor's expense.

E. Contractor's Responsibilities:

1. Provide additional survey and layout required, and construction staking as required.

2. Locate and protect reference points prior to starting Work at site.

3. Check and establish exact location of existing facilities prior to construction of new facilities and any connections thereto.

4. In event of discrepancy in data provided by Engineer, request clarification before proceeding with Work.

5. Preserve and leave undisturbed control staking.

6. Re-establish reference points resulting from destruction by Contractor's operations.

7. Retain professional land surveyor or civil engineer registered in California who shall perform or supervise engineering surveying necessary for additional construction staking and layout.

8. Maintain complete accurate log of survey Work onsite as it progresses as a Record Document. Include in project as-builts. See Section 01 72 00, “Record Documents.”

9. Submit documentation, as requested.

10. Provide competent employee(s), tools, stakes, and other equipment and materials as the Engineer may require to:
a. Check layout, survey, and measurement of Work.
b. Measure quantities for payment purposes.

11. Cooperate with the Engineer so that checking and measuring may be accomplished with least interference to Contractor's operations.

1.12 PERMIT REQUIREMENTS
A. Notification
Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 107

SPECIFICATIONS

1. The Contractor shall provide a contact name and mailing address for the purpose of notification in conformance with the approval or permit conditions. The Contractor shall provide the name(s), email addresses, and telephone numbers of representatives who can be reached at all times and who have the authority and responsibility to respond immediately to an emergency situation at the construction jobsite. Mailing addresses, email addresses, name and telephone numbers required for notification and emergency response shall be provided to the City Engineer.

B. The Contractor shall submit copies of all other permits and approvals from other government agencies with respect to the work. If a permit is not required from these agencies, the Contractor should provide copies of correspondence that indicates that a permit is not required.

C. The above requirements shall be distributed to all Subcontractors working on the project site.

PART 3 PRODUCTS - Not Used
PART 4 EXECUTION - Not Used

END OF SECTION
Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 108

SPECIFICATIONS
SECTION 01 32 16

CONSTRUCTION PROGRESS SCHEDULE
PART 5 GENERAL

1.13 DESCRIPTION
A. Summary: The work of this section consists of project schedule requirements including preparation of a project schedule, schedule updates, schedule revisions and time impact analysis. The project schedule shall be based upon the Critical Path Method (CPM) for planning, scheduling and reporting progress of the Work.

B. Purpose: The purpose of the project schedule is to ensure adequate planning, coordination, scheduling, and reporting during execution of the work by the Contractor. The project schedule will assist the Contractor and the Engineer in monitoring the progress of the work, evaluating proposed changes, and processing the Contractor's monthly progress payment.

C. Software: The software shall be the latest version of Primavera Project Planner (P3), SureTrak Project Scheduler, Microsoft Project, or approved equal.

D. No work shall be done outside of the hours stated in the Contract Documents without written permission of the Engineer.

1.14 SUBMITTALS
A. Project Schedule: After contract award and before the Pre-Construction conference, submit one electronic copy and 2 paper copies of the proposed project schedule, and accompanying CPM Schedule Reports.

B. Project Schedule Updates: On or before the 7th day preceding the progress payment request date, submit estimates of the percent completion of each schedule activity and necessary supporting data. Provide two paper copies and one electronic copy.

C. Project Schedule Revisions and Time Impact Analysis: Submit one electronic copy and two paper copies of a Time Impact Analysis. Each Time Impact Analysis shall include a Fragmentary Network (Fragnet) demonstrating how the Contractor proposes to incorporate a modification, change, delay, or Contractor request into the project schedule.

1.15 PROJECT SCHEDULE
A. Schedule Development:

1. The late finish date shown on the schedule shall be the same date as the last day of the contract period.

2. The Contractor shall use the Precedence Diagram Method (PDM) with limited use of lead or lag durations between schedule activities. The Contractor's project schedule shall consist of procurement activities (including mobilization, submittal, and the fabrication and delivery of key and long-lead procurement items) and construction activities.

3. The Contractor's project schedule shall consist of, but not be limited to, the following for each activity:
a. Identify each and every activity number with numerical designations (maximum 5-digit). Numbering of activities shall be in increments of 10 digits. b. Concise description of the work represented by the activity (maximum 48 characters). Avoid the use of non-standard abbreviations. The work related to each activity shall be limited to one work trade.

Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

PART 3 - 109

SPECIFICATIONS
c. Activity duration in whole working days with a maximum duration of 5 work days each, unless otherwise approved by the Engineer, except for non-construction activities including mobilization, shop drawing and sample submittals, fabrication of materials, delivery of materials and equipment, and concrete curing.

4. In developing the project schedule, ensure that subcontractor work at all tiers, as well as the prime contractor’s work, is included and coordinated in the project schedule.

5. The project schedule as developed shall show the sequence and interdependence of activities required for complete performance of the work. Ensure all work sequences are logical and the project schedule shows a coordinated plan of the work.

6. Proposed duration assigned to each activity shall be the Contractor's best estimate of time required to complete the activity considering the scope and resources planned for the activity.

7. Consider seasonal weather conditions in planning and scheduling all work influenced by high or low ambient temperatures, wind and/or precipitation to ensure completion of all work within the contract time. Show anticipated weather conditions on project calendar.

B. Joint Review, Revision, and Acceptance:

1. Within seven calendar days of receipt of the Contractor's proposed project schedule, the Engineer and Contractor shall meet for joint review, correction, or adjustment of the proposed project schedule. Any areas which, in the opinion of the Engineer, conflict with timely completion of the project shall be subject to revision by the Contractor.

2. In the event the Contractor fails to define any element of work, activity, or logic, and the Engineer review does not detect this omission or error, such omission or error, when discovered by the Contractor or Engineer, shall be corrected by the Contractor at the next monthly project schedule update and shall not affect the contract time.

3. Within seven (7) calendar days after the joint review between the Contractor and Engineer, the Contractor shall revise and resubmit the project schedule in accordance with agreements reached during the joint review.

4. Upon acceptance of the project schedule by the Engineer, the project schedule will be used to evaluate the Contractor's monthly applications for payment based upon information developed at the monthly project schedule update meeting.

1.16 PROJECT SCHEDULE UPDATES
A. General: Update the project schedule on a bi-weekly basis throughout the entire contract time and until project substantial completion. The status date of each schedule update shall be the 7th day preceding the progress payment request date.

B. Procedure: The Contractor shall meet with the Engineer each month at a project schedule update meeting to review actual progress made through the status date of the project schedule update, including dates activities were started and/or completed and the percentage of work completed on each activity started and/or completed.

C. Progress Payments: The monthly updating of the project schedule shall be an integral part of the process upon which progress payments will be made under this contract. If the Contractor fails to provide schedule updates or revisions, then a portion of his monthly payment may be retained until such corrections have been made.

1.17 PROJECT SCHEDULE REVISIONS
A. Required Revisions: If, as a result of the monthly schedule update, it appears the project schedule no longer represents the actual prosecution and progress of the work, Agenda Item Number 6
Agenda Item Number 6
City Council Meeting Packet for February 21, 2023

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SPECIFICATIONS
the Engineer will request, and the Contractor shall submit, a revision to the project schedule. The Contractor may also request reasonable revisions to the project schedule in the event the Contractor's planning for the work is revised. If the Contractor desires to make changes in the project schedule, the Contractor shall notify the Engineer in writing, stating the reason for the proposed revision. Accepted revisions will be incorporated into the project schedule at the next monthly schedule update.

B. Procedure: If revision to the project schedule is contemplated, the Contractor or Engineer shall so advise the other in writing at least seven (7) calendar days prior to the next schedule update meeting, describing the revision and setting forth the reasons therefore. City-requested revisions to the project schedule will be presented in writing to the Contractor, who shall respond in writing within seven (7) calendar days.

1.18 TIME IMPACT ANALYSIS FOR CONTRACT MODIFICATIONS, CHANGES, DELAYS, AND

CONTRACTOR REQUESTS
A. Requirements: When contract modifications or changes are initiated, delays are experienced, or the Contractor desires to revise the project schedule, the Contractor shall submit to the Engineer a written time impact analysis illustrating the influence of each modification, change, delay, or Contractor request on the contract time.

B. Time Extensions: Activity delays shall not automatically mean that an extension of the contract time is warranted or due the Contractor. It is possible that a modification, change, or delay will not affect existing critical path activities or cause non-critical activities to become critical. A modification, change, or delay may result in only absorbing a part of the available total float that may exist within an activity chain of the project schedule, thereby not causing any effect on the contract time. Time extensions will be granted in accordance with the terms of the contract.

C. Float: Float is not for the exclusive use or benefit of either the Owner or the Contractor.

Extension of the contract time will be granted only to the extent the equitable time adjustments to the activity or activities affected by the modification, change, or delay exceeds the total (positive or zero) float available on a particular activity.

D. Procedure: Each time impact analysis shall be submitted within the time period stated in a request for proposal, or the time period designated under the clauses entitled Changes or Default. In cases where the Contractor does not submit a written request for extension of time and a time impact analysis within the designated time, it is mutually agreed that the particular modification, change, delay, or Contractor request does not require an extension of the contract time. Upon acceptance, the time impact analysis shall be incorporated into the project schedule at the next monthly schedule update.

PART 6 PRODUCTS - Not Used
PART 7 EXECUTION - Not Used

END OF SECTION
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SECTION 01 33 00

SUBMITTALS
PART 8 GENERAL

1.19 DESCRIPTION
A. This Section specifies the general methods and requirements of submissions applicable to the following work-related submittals: Shop Drawings, Product Data, Samples, and Construction or Submittal Schedules. Detailed submittal requirements will be specified in the technical specification section.

1.20 SHOP DRAWINGS, PRODUCT DATA, SAMPLES
A. Shop Drawings.

1. Shop drawings, as specified in individual work Sections include, but are not necessarily limited to: custom-prepared data such as fabrication and erection/installation (working) drawings of concrete reinforcement, piping layout, scheduled information, special wiring diagrams, coordination drawings, individual system or equipment inspection and test reports including performance curves and certifications as applicable to the work.

2. All shop and working drawings shall be prepared on standard size, 22-inch by 34-inch sheets, except those which are made by changing existing standard shop or working drawings.

3. All shop drawings submitted by subcontractors for approval shall be sent directly to the Contractor for checking. The Contractor shall be responsible for their submission at the proper time so as to prevent delays in delivery of materials.

4. The Contractor shall check all subcontractors’ shop drawings regarding measurements, size of members, materials, and details to satisfy himself/herself that they conform to the intent of the Drawings and Specifications. Shop drawings found to be inaccurate or otherwise in error shall be returned to the subcontractors for correction before submission thereof.

5. All details on shop drawings submitted for approval shall clearly show the relation of the various parts of main members and lines of the structure, and where correct fabrication of the work depends upon field measurements, such measurements shall be made and noted on the Drawings before being submitted for approval.

B. Product Data: Product data as specified in individual Sections, includes, but is not necessarily limited to, standard prepared data for manufactured products (sometimes referred to as catalog data), such as the manufacturer’s product specifications and installation instructions, availability, roughing-in diagrams and templates, catalog cuts, product photographs, standard wiring diagrams, printed performance curves and operational-range diagrams, production or quality control inspection and test reports and certifications and recommended spare-parts listing, and product warranties, as applicable to the Work. Product data shall be submitted electronically to the maximum extent possible.

C. Samples: Samples specified in individual Sections, includes, but is not necessarily limited to, physical examples of the work such as sections of manufactured or fabricated work, and units of work to be used by the Engineer for independent inspection and testing, as applicable to the Work.

1.21 EQUIPMENT, MATERIALS AND COMPONENTS
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A. All equipment, materials and components furnished by the Contractor shall be stock models for which parts are readily available and shall be products which shall have performed satisfactorily in an installation independent of the manufacturer's facilities for a consecutive period of not less than two (2) years as of the date of the bid opening.

B. Any item which the Contractor proposes to furnish as equal to any item specified shall be submitted for approval following the instructions below.

1.22 REQUIRED SUBMITTALS
A. Construction Schedule. The Contractor shall furnish the Engineer with the proposed work schedule as outlined in Section 3-1.08 of the General Conditions and prior to the preconstruction meeting. The Contractor shall also advise the Engineer of revisions of the schedule as modifications may become necessary, or as may be required after commencement of work. Such outlines and revisions shall be in sufficient detail to enable the Engineer to judge as to the adequacy of the Contractor's operations and to anticipate such conditions as may tend to impair or retard the progress and completion of the work.

B. Payment Schedule. See Section 9-1.02 of the General Conditions.

C. Submittals are required on the items as listed individually in each section of the Technical Specifications (Divisions 2 through 49). The description of submittal data required is contained in the individual section.

D. As-built drawings: One (1) complete set of (22” x 34”) blueline prints of the Contract Drawings will be furnished to the Contractor for use in preparing as-built drawings. The Contractor shall keep this set of prints on the job site and accurately record (redline) all changes to contract drawings including Contract Modifications, as indicated in Section 01 72 00 Record Documents. Submit as-built redline prints to the Engineer at the completion of the job.

E. The Contractor shall furnish to the Engineer three (3) complete bound sets of operation and maintenance instructions for those items as listed individually in each section of the Technical Specifications (Divisions 2 through 33). Each set shall contain manufacturer's specifications, operation and performance and dimensional data. Sets shall be neatly segregated, indexed and labeled.

1.23 CONTRACTOR’S RESPONSIBILITIES
A. The Contractor shall review shop drawings, product data and samples, including those by Subcontractors, prior to submission to determine and verify the following:

1. Field measurements.

2. Field construction criteria.

3. Catalog numbers and similar data.

4. Conformance with the Specifications.

B. If a shop drawing shows any deviation from the requirements of the Contract Documents, the Contractor shall provide a description of the deviations with the reason and justification in a letter attached to the submittal.

C. The review and approval of shop drawings, samples or product data by the Engineer shall not relieve the Contractor from his responsibility with regard to the fulfillment of the Contract.

D. No portion of the work requiring a shop drawing, sample, or product data shall be started nor shall any materials be fabricated or installed prior to the approval or qualified approval of such item. Fabrication performed, materials purchased or on-site construction accomplished which does not conform to approved shop drawings and data shall be at the Contractor’s risk. The City will not be liable for any expense or delay due to corrections or remedies required to accomplish conformity.

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E. Project work, material, fabrication, and installation shall conform with approved shop drawings, applicable samples, and product data.

1.24 SUBMISSION REQUIREMENTS
A. Make submittals promptly in accordance with approved schedule.

B. Deliver submittals electronically in PDF format.

C. Submit related products and materials under a single submittal cover for review.

D. All submittals and Requests for Information (RFI) shall be made sufficiently in advance of construction to provide 14 calendar days for review by the Engineer.

E. A single submittal for each item shall be provided by the Contractor for all items contained within a single specification. Submit all product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in each specification section under a single submittal cover for review.

Incomplete submittals will not be reviewed.

F. Number of submittals required. It is the intent of the City to maximize the use of electronic submittals. Submit one electronic copy to the Engineer. If an electronic submittal is not practical submit per the following:

1. Shop Drawings: Unless otherwise stated in the respective Specifications Sections, submit five hard copies.

2. Product Data: Unless otherwise stated in the respective Specifications Sections, submit five hard copies.

3. Samples: Submit five samples unless stated otherwise in the respective Specification Sections.

G. Submittals shall contain:

1. Cover sheet that includes:
a. The date of submission and the dates of any previous submissions. b. The Project title and number.
c. Contractor identification.
d. The names of:
1) Contractor.
2) Supplier.
3) Manufacturer.
e. Identification of the product, with the specification section number, page, and paragraph(s).

2. Field dimensions, clearly identified as such.

3. Relation to adjacent or critical features of the Work or materials.

4. Applicable standards, such as ASTM numbers.

5. Identification of deviations from Contract Documents.

6. Identification of revisions on resubmittals.

1.25 REVIEW OF SHOP DRAWINGS, PRODUCT DATA, WORKING DRAWINGS AND SAMPLES A. The Engineer’s review is for general conformance with the design intent presented in the Contract Documents. Markings or comments shall not be construed as relieving the Contractor from compliance with the Contract Drawings and Specifications or from departures there from. The Contractor remains responsible for details and accuracy, for coordinating the work with all other associated work and trades, for selecting fabrication processes, for techniques of assembly, and for performing work in a safe manner.

B. The review of shop drawings, data, and samples will be general. They shall not be construed:

1. As permitting any departure form the Contract requirements:

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2. As relieving the Contractor of responsibility for any errors, including details, dimensions, and materials:

3. As approving departures from details furnished by the Engineer, except as otherwise provided herein.

C. If the shop drawings, data or samples submitted describe variations and show a departure from the Contract requirements which the Engineer finds to be in the interest of the City and to be so minor as not to involve a change in Contract Price or time for performance, the Engineer may return the reviewed drawings without noting an exception.

D. One electronic copy of shop drawings or product data will be returned to the Contractor.

Samples will not be returned. If the Contractor wishes extra copies to be returned, he shall submit additional copies.

E. Submittals will be returned to the Contractor under one of the action codes indicated and defined on the transmittal form furnished by the Engineer.

F. Re-submittals will be handled in the same manner as first submittals. On re-submittals the Contractor shall direct specific attention, in writing, on the letter of transmittal and on resubmitted shop drawings by use of revision triangles or other similar methods, to revisions other than the corrections requested by the Engineer on previous submissions. Any such revisions which are not clearly identified shall be made at the risk of the Contractor. The Contractor shall make corrections to any work done because of a revision that is not in accordance with the Contract Documents.

G. Partial submittals may not be reviewed. The Engineer will be the only judge as to the completeness of a submittal. Submittals not complete will be returned to the Contractor, and will be considered “Rejected” until re-submitted. The Engineer may at his option provide a list or mark the submittal directing the Contractor to the areas that are incomplete.

H. If the Contractor considers any correction indicated on the shop drawings to constitute a change to the Contract Documents, the Contractor shall give written notice thereof to the Engineer at least five (5) working days prior to release for manufacture.

I. When the shop drawings have been completed to the satisfaction of the Engineer, the Contractor shall carry out the construction in accordance therewith and shall make no further changes therein except upon written instructions from the Engineer.

1.26 DISTRIBUTION
A. Distribute reproductions of approved shop drawings and copies of approved product data and samples, where required, to the job site file and elsewhere as directed by the Engineer.

1.27 GENERAL PROCEDURES FOR SUBMITTALS
A. Coordination of Submittal Times: Prepare and transmit each submittal sufficiently in advance of performing the related work or other applicable activities, or within the time specified in the individual work sections of the Specifications, so that the installation will not be delayed by processing times including re-submittal (if required), coordination with other submittals, testing, purchasing, fabrication, delivery and similar sequenced activities. No extension of time will be authorized because of poorly sequenced activities. No extension of time will be authorized because of the Contractor’s failure to transmit submittals sufficiently in advance of the Work.

B. All submittals shall be made utilizing the City supplied online construction management software. Written approval must be obtained from the City before items requiring submittal are installed. Submittals not in accordance with the plans and specifications shall be accompanied by a written statement indicating in detail all parts which deviate from the plans and specifications.

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C. All submittals shall be made to the Engineer by the Contractor only. Submittals received by the Engineer without the Contractor's signature shall be returned to the Contractor without action.

D. Literature, shop drawings, etc., fully describing the items which the Contractor proposes to install shall be submitted in the form of one electronic copy. Items submitted shall be plainly marked to indicate which options, models etc. are proposed.

PART 9 PRODUCTS - Not Used
PART 10 EXECUTION - Not Used

END OF SECTION
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SECTION 01 40 00

QUALITY CONTROL
PART 11 GENERAL

1.1 PERFORMANCE OF WORK BY CONTRACTOR
A. The Contractor's procedure and methods of construction may, in general, be of their own choosing, provided they follow best general practice and are calculated to secure results which will satisfy the requirements of these specifications.

B. The Contractor shall furnish the Engineer all reasonable facilities for obtaining such information as they may desire respecting the character of the materials and the progress of the work.

The Contractor shall furnish information to include the number of persons employed, their pay, the time they worked, and other elements of cost at the request of the Engineer or the Engineer.

1.2 AUTHORITY OF THE ENGINEER
A. The authority of the Engineer for technical contract administration and inspection of the work is limited to the following functions:

1. Inspect and accept or reject work and materials including exceptions to material submittals and shop drawings.

2. Assure compliance with all technical contract terms and conditions.

3. Clarify specifications and drawings where clarification does not involve contract cost or time. Any disagreements with the Contractor over clarification of specifications and drawings are to be immediately referred to the City.

4. Verify, prepare, and recommend payment estimates on progress payments; forward to the City for approval.

5. Conduct "Labor Standards Interviews" in accordance with instructions from the City. All known or suspected violations of the Labor Standards Provisions shall be reported immediately to the City.

6. Enforce safety requirements in accordance with the Federal and State Regulations and the Technical Specifications.

B. The Engineer is not authorized to take the following actions, all of which remain the sole responsibility of the Engineer.

1. Make changes to the contract provisions, period of performance, or change any contract terms or conditions.

2. Make decisions concerning any claims and disputes under this contract.

C. Close liaison will be maintained by the Engineer, the City and the Contractor. The Engineer shall notify the City immediately of any problems encountered, including but not restricted to maintaining completion schedules.

1.3 AUTHORITY OF THE INSPECTOR
A. An Inspector employed by the City will assist the Engineer in making inspections and measurements and will enforce strict compliance with the terms of the contract.

B. The Inspector shall have free access to the job site at all times while construction is in progress, and the Contractor shall furnish such information and assistance as may be necessary.

C. The Inspector shall, on a daily basis, record the work being accomplished, the trades working, materials delivered and/or installed, reasons for delays, and other pertinent information.

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D. The Inspector may reject unsuitable materials or work not performed in accordance with the terms of the contract until the situation has been referred to and resolved by the Engineer and/or City.

E. The Inspector shall observe that all construction is performed in conformance with the contract health and safety requirements.

F. The Inspector shall conduct wage rate interviews and report suspected labor standard violations to the City.

G. The Inspector shall check and verify the Contractor's progress payment requests, if progress payments have been included in the contract.

H. No decisions or instructions of an Inspector will at any time relieve the Contractor from the responsibility of complying fully with all the requirements of the contract. In cases of difference arising between an Inspector and the Contractor or his agent, appeal shall be taken to the Engineer.

I. Inspectors are not authorized to waive or alter in any respect any of the terms or requirements of the contract, to make additional requirements, to grant extensions of time or delays, or to waive forfeitures. The Contractor shall not be entitled to payment for any work improperly performed with or without an Inspector's approval.

1.4 INSPECTION AND TESTING
A. Contract Description.

1. Where the Contract Documents require work to be field tested or approved, it shall be tested in the presence of the Engineer or its authorized representative. The Engineer shall have the right to witness all on-site tests performed by the Contractor and any shop tests.

The results of any tests performed by the Contractor shall be made available for the information of the Engineer. Inspections, tests or favorable reviews by the Engineer or others shall not relieve the Contractor from its obligation to perform the work in accordance with the requirements of the Contract Documents or for its sole responsibility for the quality of workmanship and materials.

2. Except as specifically required under the technical specifications for testing and inspection, all tests for materials furnished by the Contractor will be done in accordance with commonly recognized standards of national organizations. Where tests are to be performed by an independent laboratory or agency, the Contractor shall furnish such samples of all materials as required by the Engineer without charge. The sample or samples of materials to be tested shall be selected by such laboratory or agency, or the Engineer, and not by the Contractor. No material for which the Contract Documents require the submittal and approval of tests, certificates of compliance or other documentation shall be incorporated in the Work until such submittal has been made and approved.

3. The Contractor shall provide safe access for the Engineer and inspectors to adequately inspect the quality of work and the conformance with the Contract Documents. The Contractor shall furnish the Engineer the necessary labor and facilities for such things as excavation in the compacted fill to the depths required to take samples. The Contractor shall provide adequate lighting, ventilation, ladders and other protective facilities as may be necessary for the safe performance of inspections.

4. Upon completion of the Work the Engineer will conduct a final inspection as provided for in Section 01 70 00, “Project Closeout.” Records shall be available at all reasonable hours for inspection by other local or State agencies to ascertain compliance with laws and regulations.

B. Notice

1. The Contractor shall notify the Engineer in writing at least 72 hours before any field testing or special inspections, including concrete and compaction testing, are required to Agenda Item Number 6
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be performed by the independent laboratory. Any offsite test will require more intense planning and scheduling.

2. Whenever the Contractor varies the period during which work is carried on each day, the Contractor shall give due notice to the Engineer so that proper inspection may be provided. Any work done in the absence of the Engineer shall be considered to be rejected. It will be the responsibility of the Contractor to demonstrate to the satisfaction of the Engineer that the work meets all conditions of the specification and if such conditions are not met to remove the work.

3. The Contractor shall give the Engineer written notification at least 30 days prior to the shipment of materials and equipment to be tested and/or inspected at the point of origin.

Satisfactory tests and inspections at the point of origin shall not be construed as a final acceptance of the materials and equipment nor shall such tests and inspections preclude retesting or re-inspection at the site of the Work.

C. Testing

1. The Contractor shall be responsible for, and shall pay for, all source quality control testing, off-site tests of materials required including all source and mix design tests for the approval of soil and concrete materials, testing for material disposal, and all quality control testing.

2. The City will perform the soils and concrete quality assurance testing in the Technical Specifications during the performance of the Work. The City may retain the services of an independent qualified testing agency to perform soil and asphalt quality assurance compaction testing and work identified as requiring special inspections and testing as defined by the CBC 2018.

3. The City will perform bacteriological and chlorine residual testing on the new water main.

4. The Contractor shall be responsible for water main pressure testing. The pressure test shall be witnessed by the City for the duration of the test.

5. The Contractor shall be responsible for the costs associated with the re-test of any failed test. The cost of the re-test of any failed test will be deducted from the bid price.

6. The Engineer shall have the authority to require additional tests or inspections due to the manner in which the Contractor executes its work. Examples of such additional tests and inspections include; tests of materials substituted for previously accepted materials, or substituted for specified materials, or retests made necessary by failure of material to comply with the requirements of the Specifications. The Contractor shall be responsible for the costs of any additional tests or inspections.

7. The Contractor shall submit information and certifications for any independent testing laboratory or agency to the Engineer for review and approval of the labs or agency.

D. Work Covered Prior to Inspection and/or Testing

1. Work requiring inspection and/or testing shall not be concealed or buried prior to the acceptance of such inspection or testing. Work covered without the favorable review or consent of the Engineer shall, if required by the Engineer, be uncovered for inspection and/or testing at the Contractor's expense.

E. Work Covered With Prior Inspection and/or Testing

1. If the Engineer considers it necessary or advisable that covered work which was favorably inspected and tested be uncovered for re-inspection and/or retesting, the Contractor, at the Engineer's request, will uncover, expose or otherwise make available for observation, inspection or testing as the Engineer may require, that portion of the work in question, furnishing all necessary labor, materials, tools, and equipment. If it is found that such work is defective, the Contractor will bear all expenses of such uncovering, exposure, observation, inspection and testing and of satisfactory reconstruction. If, however, such work is not found to be defective the Contractor will be allowed an increase in the Contract price or an extension of the Contract time, or both, directly attributable to such uncovering, exposure, observation, testing and reconstruction, and a Change Order shall be issued for such additional work.

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1. The Contractor is completely responsible for scheduling all State, County, and any other agency inspections such as Pacific Gas and Electric Company in accordance with the State, County, and agency requirements. The Contractor shall notify the Engineer of all work component inspection notices and schedules. Failure of the Contractor to properly coordinate and schedule these inspections shall not be cause for time extensions.

PART 2 PRODUCTS

2.1 TEST WATER
A. The City will provide water for testing. The Contractor shall properly dispose of the water which is required for testing of piping and structures, including dechlorination. The Contractor shall coordinate with the City for the use of water available at the project site and shall pay all costs associated with the use of the water. The Contractor shall dispose of all testing water in the sanitary sewer without damage to property, and in accordance with applicable regulations.

END OF SECTION
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SECTION 01 50 00

CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS
PART 12 GENERAL

1.1 SUBMITTALS SECTION INCLUDES
A. Meet requirements of Section 01 33 00, “Submittals,” as applicable. Make submittals required below before starting Work at the site or in accordance with accepted schedule of submittals submissions.

B. Administrative Submittals: Copies of permits and approvals for construction as required by Laws and Regulations and governing agencies.

C. Traffic Control Plan: Submit vehicular and pedestrian traffic control plan as described in this section.

1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS
A. City of Sebastopol Standard Specifications and Details.

B. City of Santa Rosa Water Distribution System Construction Standard Specifications (Section 132).

C. City of Santa Rosa Sanitary Sewer System Construction Standard Specifications (Section 130).

D. State of California, Department of Transportation (Caltrans) Specifications and Standards:

1. Standard Specifications:
a. Section 7 Legal Relations and Responsibility
b. Section 12 Construction Area Traffic Control Devices

2. Standard Plans:
a. Temporary Traffic Control Systems

3. California Manual on Uniform Traffic Control Devices, Current Edition (California MUTCD) E. Commercial Standards:

1. State of California, Division of Industrial Safety, Department of Industrial Relations:

2. Safety Orders of the Division of Industrial Safety, Department of Industrial Relations of the State of California, current edition
F. The Contractor must so conduct their operations so as to cause the least possible obstruction and inconvenience to public traffic. Unless otherwise approved by the Engineer, all traffic must be permitted to pass through the Work.

G. Due to the need to accommodate and minimize inconvenience to the public, unless expressly specified or approved in writing by the Engineer, no road closures will be permitted. Public vehicular and pedestrian traffic must be allowed to travel through the Work area with an absolute minimum of interruption or impedance unless otherwise provided for in the Technical Specifications or approved in writing by the Engineer. The Contractor must make provisions for the safe passage of pedestrians around the area of Work at all times.

H. Residents affected by construction must be provided passage and access through the Work area to the maximum extent possible.

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I. The Contractor must provide multiple, advance written notices of closures to all affected property owners in a form approved by the Engineer.

J. Except as otherwise approved by the Engineer or City, the stockpiling or storing of material in City streets or right of way shall be prohibited. Where this is unavoidable, all such materials must be piled or stored in a manner that will not obstruct sidewalks, driveways, or pedestrian crossings. Gutters and drainage channels must be kept clear and unobstructed at all times. All such materials shall be stored and handled in a manner that protects City streets, sidewalks, or other facilities from damage.

K. Where approved in advance by the Engineer, the Contractor must construct and maintain detours for the use of public traffic at his or her own expense. Failure or refusal of the Contractor to construct and maintain detours so approved at the proper time will be a material breach of the Contract subject to any and all remedies available pursuant to the Contract Documents and at law and equity. Such remedies include, but are not limited to, termination pursuant to the Contract General Conditions.

L. Throughout performance of the Work the Contractor must construct and adequately maintain suitable and safe crossings over trenches and such detours as are necessary to care for the public and private traffic at all times including Saturdays, Sundays and holidays.

M. The Contractor will be responsible for keeping all emergency services, including the Healdsburg police and fire departments informed of obstructions to, or detours around any public or private roads caused by reasons of his or her operations.

N. The Contractor must comply with the California Manual on Uniform Traffic Control Devices (MUTCD) at all times.

O. The fact that rain or other causes, either within or beyond the control of the Contractor, may force suspension or delay of the Work, shall in no way relieve the Contractor of his or her responsibility of maintaining traffic through the Project and providing local access as specified in this section. The Contractor must, at all times, keep on the job such materials, force and equipment as may be necessary to keep roads, streets and driveways within the Project open to traffic and in good repair and shall expedite the passage of such traffic, using such force and equipment as may be necessary.

1.3 MOBILIZATION
A. Mobilization shall include, but not be limited to, these principal items:

1. Moving Contractor's field office and equipment required for first month operations onto site.

2. Installing temporary construction power, wiring, and lighting facilities.

3. Providing on-site communication facilities, including telephones.

4. Providing onsite sanitary facilities and potable water facilities as specified and as required by Laws and Regulations, and governing agencies.

5. Insurance and bonds.

6. Posting OSHA required notices and establishing safety programs and procedures.

7. Having Contractor's superintendent at the site full time.

8. Submitting of initially acceptable schedules as required.

B. Obtaining required permits.

1.4 ACCESS TO SITE
A. Access to the work from existing roads. The City assumes no responsibility for the condition or maintenance of any road or structure thereon that may be used by the Contractor in performing the work under these specifications or in traveling to and from the site of the work.

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No payment will be made to the Contractor by the City for any work done in improving, repairing, or maintaining any road or structure thereon for use in the performance of the work under these specifications. Roads subject to interference by the Work shall be kept open.

1.5 PROTECTION OF PROPERTY
A. The Contractor shall not enter upon private property for any purpose without first obtaining written permission from the owner or his duly authorized representative, shall be responsible for the preservation of all public and private property along and adjacent to work contemplated under the contract, and shall use every precaution necessary to prevent damage or injury thereto. He/she shall exercise due care in preventing and shall be responsible for damages to structures of all kinds, whether owned by the City or privately, and shall protect from disturbance or damage all land monuments.

1.6 PROTECTION OF ENVIRONMENT
A. All contract operations shall be conducted in compliance with all federal, state and local environmental laws and regulations. This condition applies to, but is not limited to, laws and regulations governing noise levels, air and water quality standards, and cultural resources.

B. If the Contractor fails or refuses to promptly comply with the requirements of subparagraph A. above, the Engineer or his/her authorized representative, shall notify the Contractor of any noncompliance and indicate to the Contractor the action to be taken. The Contractor shall, after receipt of such notice, immediately correct the conditions to which attention has been directed. Such notice, either oral or written, when served on the Contractor or his representative(s) at the site of the work, shall be deemed sufficient.

C. In the event the Contractor fails or refuses to promptly comply with the compliance directive issued under subparagraph above, the Engineer with the concurrence of the Contracting Officer may issue an order to suspend all or any part of the work.

D. When satisfactory corrective action is taken, an order to resume work will be issued. The Contractor shall not be entitled to any extension of time, nor to any claim for damage or to excess costs by reason of either the directive or the suspension order.

1.7 ADDITIONAL SAFETY REQUIREMENT
A. In addition to the Safety Standards and Accident Prevention requirements of Section 23 of the Information for Bidders, and Section 16 of the Part III Special Provisions, roll-over protection and seat belts required by 29 CFR 1926 shall be extended to include equipment regardless of year of manufacture.

1.7 CONTRACTOR'S USE OF PREMISES
A. Availability of lands:

1. All work is to be performed on City lands or such other lands which are designated for the use of the Contractor. Easements for permanent structures or permanent changes in existing facilities will be obtained and paid for by the City, unless otherwise provided in the Contract Documents. Nothing contained in the Contract Documents shall be interpreted as giving the Contractor exclusive occupancy of the lands or rights of way provided.

B. Use of premises: The Contractor shall confine construction equipment, the storage of materials and equipment, and the operations of workers to the project site and approved staging areas.

The Contractor shall assume full responsibility for any damage to any such land or area.

C. Lands furnished by the City upon which Contractor shall perform the Work are as shown on the Drawings.

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D. Coordinate with the City on location(s) for Contractor’s temporary facilities and laydown of materials and equipment. In the absence of available laydown area for materials and equipment on City-owned lands or within the City right-of-way, Contractor shall make his/her own arrangements for temporary facilities and laydown of materials and equipment.

E. Contractor's employees shall park their vehicles in City approved parking areas only.

F. Contractor's employees shall not use existing City buildings or landscaped areas for break or lunch times. Contractor's employees shall be responsible for cleaning up any litter from break or lunch time.

1.8 TEMPORARY TRAFFIC CONTROL PLAN
A. The Contractor shall provide all materials, equipment, and labor necessary to furnish, place, and maintain all temporary traffic control systems, including construction and maintenance area traffic control devices and flaggers as required to access the project site and perform the Work in accordance with this Section, and all other appurtenant work, complete in place, as shown on the Drawings and as specified herein.

B. The Contractor shall submit for review by the Engineer, a Work Zone Traffic Control Plan on 11" x 17" format which contains only information related to the site-specific work zone traffic control. The plan will show which California MUTCD typical applications, if any, are to be used for each work operation in addition to site specific traffic control. If the Contractor proposed to use the current edition of California MUTCD in specific work operations, they shall submit in writing for consideration which Typical Application Diagram will be used for each work operation. The Work Zone Traffic Control Plan shall be specific to the proposed method(s) construction and shall include:

1. Specific details for construction staging, including the location and limits of the work zone.

2. Locations of all excavations.

3. Plans for protection of the public from construction-related hazards.

4. Lane closures and traffic routing including consideration of construction-related trucking routes.

5. A trucking route for approval by the Engineer. The route must minimize traffic on residential streets that are not part of the project.

6. A pedestrian routing plan for approval by the Engineer prepared in accordance with the California MUTCD. The routing plan must demonstrate how pedestrians will be safely routed around the project site during construction.

7. Lane closure markings, barricade locations, and sign locations showing the necessary signing, methods of delineation and channelization and reference to the appropriate Caltrans standards and California MUTCD details for all affected roads.

8. Dimensions of lanes affected by traffic control that will be open to traffic.

9. Dimensions and locations of signs and cone tapers.

10. Identification of side streets and driveways affected by construction and

11. Time periods of lane closures and detours.

C. The Work Zone Traffic Control Plan shall contain a title block which contains the Contractor's name, address, phone number, project superintendent's name, contract name, dates and hours traffic control will be in effect, and a space for review acknowledgment.

D. The Work Zone Traffic Control Plan shall be submitted to the Engineer and other affected agencies for review at least two weeks prior to implementation in order to determine the Contractor’s compliance with the requirements of this section.

E. No work except for installation of project identification signs will be allowed to commence prior to approval of the Work Zone Traffic Control Plan.

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F. A "Letter of Responsibility," on company letterhead, indicating the names and telephone numbers of at least three different persons who shall be available to be contacted in case of emergency at any time during the life of the contract. Said persons must have decisionmaking authority within the company.

1.9 PROTECTION OF WORK AND PROPERTY
A. Reference General Conditions and this Section.

B. Comply with all OSHA and other applicable safety rules.

C. Keep Owner informed of all accidents or near accidents on the site and related claims.

D. Use of Explosives: No blasting or use of explosives will be allowed on the site.

E. During the performance of the Work, Contractor is responsible for adapting its means, methods, techniques, sequences, and procedures of construction to allow the City to maintain operation as described in Section 01 10 00, “Summary Of Work,” at the existing level of facility production and consistent with applicable permit requirements, and Laws and Regulations. In performing such Work and in cooperating with the City to maintain operations, it may be necessary for Contractor to plan, design, and provide various temporary services, utilities, connections, temporary piping and heating, access, and similar items that will be included within the Contract Price.

PART 13 PRODUCTS (NOT USED)
PART 14 EXECUTION

1.1 TEMPORARY UTILITIES
A. Power:

1. Electric power is not available at the site for the Contractor’s use. Contractor shall make arrangements to obtain and pay for electrical power used in performing the Work until final payment and acceptance by the City.

2. Electrical appurtenances required for providing temporary electric power services for the Contractor shall be provided by the Contractor and approved by Pacific Gas and Electric Company.

3. Cost of electric power used in performance and acceptance testing will be borne by Contractor.

4. The Contractor shall provide its own diesel or gasoline engine driven air compressor system and power generator when required for its pneumatic tools or equipment, if any.

B. Lighting: Provide temporary lighting at least to meet all applicable safety requirements to allow erection, application or installation of materials and equipment, and observation or inspection of the Work. Cost of temporary lighting required for performing the Work will be borne by the Contractor.

C. Heating, Cooling, and Ventilating:

1. Provide as required to maintain adequate environmental conditions to facilitate progress of the Work, to meet specified minimum conditions for the installation of materials, and to protect materials, equipment, and finishes from damage due to temperature or humidity.

2. Provide adequate forced air ventilation of enclosed areas to cure installed materials, to dispense humidity, and to prevent hazardous accumulations of dust, fumes, vapors, or gases.

3. Pay all costs of installation, maintenance, operation, removal, and fuel consumed.

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4. Provide portable unit heaters, complete with controls, oil or gas-fired, and suitably vented to outside as required for protection of health and property.

5. Natural gas is not available at the site.

D. Water:

1. Contractor to pay for all water use related to the Work. The Contractor shall provide temporary connections, piping and valving. The Contractor shall not make connection to any water system without first obtaining permission from the City.

2. Contractor will provide temporary facilities and piping required to bring water to the point of use and remove them when no longer needed. The City will install a metering device.

The Contractor will pay for water used based on meter readings.

3. Contractor will provide and bear costs of necessary water required for testing equipment, tanks or vaults, and piping prior to Substantial Completion.

E. Minimum Safety Equipment:

1. Contractor to provide and maintain onsite adequate safety equipment for activities involved, including but not limited to, air monitors, confined space entry equipment when required, adequate first aid supplies, etc. Contractor to submit list for City review.

F. Sanitary and Personnel Facilities:

1. Provide and maintain facilities for Contractor's employees, Subcontractors, and all other onsite employees. Service, clean, and maintain facilities and enclosures.

2. Use of the City’s existing sanitary facilities by construction personnel will not be allowed.

3. Locate sanitary facilities where they will not create a public nuisance or interfere with the work and at the direction of the Engineer or Engineer, relocate sanitary facilities.

4. Make Contractor’s facilities available to the City Construction Inspector.

G. Communication:

1. The Contractor shall make arrangements to obtain and pay for its own communication equipment such as telephone, cellular phone, and facsimile equipment.

2. Contractor to pay all costs of installation and monthly bills.

3. No incoming telephone calls allowed to City telephone system.

H. Fire Protection: Furnish and maintain on the site adequate firefighting equipment capable of extinguishing incipient fires. Comply with applicable parts of the National Fire Prevention Standard for Safeguarding Building Construction Operations (NFPA No. 241).

1.2 PROTECTION OF WORK AND PROPERTY
A. General:

1. Contractor shall at no time interfere with or limit the public’s access to and parking for the recreational path and trails at the site except as approved by the Engineer.

2. Perform Work within rights-of-way and easements in a systematic manner that minimizes inconvenience to property owners and the public.

3. No residence or business shall be cut off from vehicular traffic unless special arrangements have been made.

4. Maintain in continuous service all existing oil and gas pipelines, underground power, telephone or communication cable, water mains, irrigation lines, sewers, poles and overhead power, and all other utilities encountered along the line of Work, unless other arrangements satisfactory to owners of said utilities have been made.

5. Where completion of Work requires temporary or permanent removal and/or relocation of an existing utility, coordinate all activities with owner of said utility and perform all work to their satisfaction.

6. Protect, shore, brace, support, and maintain underground pipes, conduits, drains, and other underground utility construction uncovered or otherwise affected by construction operations.

7. Keep fire hydrants and water or sewer control valves free from obstruction and available for use at all times.

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8. In areas where Contractor's operations are adjacent to or near a utility such as gas, telephone, television, electric power, water, sewer, or irrigation system and such operations may cause damage or inconvenience, suspend operations until arrangements necessary for protection thereof have been made by Contractor.

9. Notify property owners and utility companies which may be affected by the construction operation at least 7 calendar days in advance. Before exposing a utility, obtain utility owner's permission. Should service of utility be interrupted due to Contractor's operation, notify proper authority immediately. Cooperate with said authority in restoring service as promptly as possible and bear all costs incurred.

10. Do not impair operation of existing sewer or storm drain systems. Prevent construction material, pavement, concrete, earth, volatile and corrosive wastes, and other debris from entering sewers, pump stations, storm drains, or other sewer structures. Maintain original site drainage wherever possible.

B. Site Security: Provide and maintain additional temporary security fences as necessary to protect the Work and Contractor's equipment and stored material. Contractor shall be solely responsible for any vandalism, theft, or damage to the work and Contractor’s equipment and stored material.

C. Barricades and Lights:

1. Provide barricades, as necessary, to prevent unauthorized entry to construction areas inside and outside of fenced area, and as required to ensure public safety and the safety of Contractor's employees, other employer's employees, and any others who may be affected by the Work.

2. Provide to protect existing facilities and adjacent properties from potential damage.

3. Locate to enable access by facility operators and property owners.

4. Protect streets, roads, highways, and other public thoroughfares that are closed to traffic by effective barricades with acceptable warning signs that comply with the requirements of the manual on Uniform Traffic Control Devices, current edition.

D. Signs and Equipment:

1. Conform to requirements of the Contract Documents.

2. Barricades: Provide in sufficient quantity to safeguard public and Work.

3. Traffic Cones: Provide to delineate traffic lanes to guide and separate traffic movements.

4. Provide barricades and lighting at obstructions, such as material piles and equipment.

5. Illuminate barricades and obstructions with warning lights from sunset to sunrise.

6. Alert the general public of construction hazards, which would include surface irregularities, unramped walkways, grade changes, and trenches or excavations in roadways and in other public access areas.

E. Trees and Plantings:

1. Protect from damage and preserve trees, shrubs, and other plants outside the limits of the Work and within the limits of the Work unless designated on the Drawings to be removed. a. Where practical, tunnel beneath trees when on or near the line of trench. b. Employ hand excavation as necessary to prevent tree injury. c. Do not stockpile materials or permit traffic within drip lines of trees. d. Provide and maintain temporary barricades around trees. e. Water vegetation as necessary to maintain health.
f. Cover temporarily exposed roots with wet burlap, and keep the burlap moist until soil is replaced around the roots.
g. No trees, except those specifically shown on Drawings to be removed, shall be removed without written approval of the Engineer.
h. Dispose of removed trees in a legal manner off the site.

2. The balling and burlapping of trees indicated for replacement shall conform to the recommended specifications set forth in the American Standards for Nursery Stock. All balls shall be firm and intact and made-balls will not be accepted. Handle ball and burlap trees by the ball and not by the top.

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3. In the event of damage to bark, trunks, limbs, or roots of plants that are not designated for removal, treat damage by corrective pruning, bark tracing, application of a heavy coating of tree paint, and other accepted horticultural and tree surgery practices.

4. Replace each plant that dies as a result of construction activities.

F. Existing Structures: Where Contractor contemplates removal of small structures such as mailboxes, signposts, and culverts that interfere with Contractor's operations, obtain approval of the Engineer. Replace those removed in a condition equal to or better than original.

G. Finished Construction: Protect finished floors and concrete floors exposed as well as those covered with composition tile or other applied surfacing.

H. Waterways: Keep ditches, culverts, and natural drainages continuously free of construction materials and debris.

I. Dewatering: Construct, maintain, and operate cofferdams, channels, flume drains, sumps, pumps, or other temporary diversion and protection works. Furnish materials required, install, maintain, and operate necessary pumping and other equipment for the environmentally safe removal and disposal of water from the various parts of the Work. Maintain the foundations and parts of the Work free from water.

1.3 TEMPORARY CONTROLS
A. Air Pollution Control: Comply with requirements of the Federal Clean Air Act, Bay Area Air Quality Management District, and any and all governing local requirements.

B. Noise Control: Provide acoustical barriers so noise emanating from tools or equipment will not exceed legal noise levels.

C. Water Pollution Control: Comply with the NPDES General Permit and all requirements of the State of California, the County of Sonoma, and the Contract Documents.

D. Erosion, Sediment, Runoff, and Flood Control

1. Provide, maintain, and operate temporary facilities to control erosion and sediment releases, prevent runoff of contaminated or sediment laden water, and to protect Work and existing facilities from flooding during construction period.

2. Comply with the NPDES General Permit for Storm Water Discharges associated with Construction Activity.

1.4 STORAGE YARDS AND BUILDINGS
A. Temporary Storage Yards: Due to site constraints only minimal onsite storage of materials will be permitted. Contractor shall utilize only the allotted area for his/her activities and area designated on drawings as “contractor laydown area.”
B. Temporary Storage Buildings:

1. No storage buildings will be allowed.

2. No storage of combustible materials shall be permitted onsite other than what is being used or consumed that day.

1.5 ACCESS ROADS AND DETOURS
A. No road detours are anticipated for the Work.

B. Maintain drainage ways. Install and maintain culverts to allow water to flow beneath access roads. Provide corrosion-resistant culvert pipe of adequate strength to resist construction loads.

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C. Provide gravel, crushed rock, or other stabilization material to permit access by all motor vehicles at all times.

D. Maintain road grade and crown to eliminate potholes, rutting, and other irregularities that restrict access.

E. Coordinate with Engineer lane closures and other operations affecting traffic and access.

Provide at least 72 hours’ notice to the Engineer of operations that will alter access to the site.

F. Upon completion of construction, leave roads and fences in same or better as preconstruction, and suitable for future use by the City.

1.6 PARKING AREAS
A. Due to site constraints, Contractor shall provide parking facilities for personnel working on the Project in Contractor's parking area or other approved area. No employee or equipment parking will be permitted on the City’s existing paved areas without prior approval. Any additional parking spaces required shall be the responsibility of the Contractor.

1.7 VEHICULAR TRAFFIC
A. Comply with Section 12-1.05 of the Contract General Provisions.

B. Comply with Laws and Regulations regarding closing or restricting the use of public streets or highways. No public or private road shall be closed, except by written permission of the Engineer. Assure the least possible obstruction to traffic and normal commercial pursuits.

C. Prior to any anticipated road closure or detour, a traffic control plan and pedestrian traffic control plan prepared by a California licensed Civil or Traffic Engineer shall be submitted to the Engineer.

D. No work shall commence until traffic control signing has been approved by the Engineer.

E. The Contractor shall provide all materials, equipment, and labor necessary to furnish, place, and maintain all temporary traffic control systems and pedestrian control systems, including construction and maintenance area traffic control devices and flaggers as required to perform the Work.

F. Conduct Work to interfere as little as possible with public travel, whether vehicular or pedestrian.

1. Whenever it is necessary to cross, close, or obstruct roads, driveways, and walks, whether public or private, provide and maintain suitable and safe bridges, detours, or other temporary expedients for accommodation of public and private travel.

2. Road Closures: Maintain satisfactory means of exit for persons residing or having occasion to transact business along the route of the Work. If it is necessary to close off roadway or alley providing sole vehicular access to property for periods greater than 2 hours, provide written notice to the Engineer so affected 3 days prior to such closure. In such cases, closings of up to 4 hours may be allowed. Closures of up to 10 hours may be allowed if a week's written notice is given and undue hardship does not result.

Notification signs to the public including ”No Parking” signs shall be posted at least 48 hours prior to Work in affected area.

3. In making street crossings, do not block more than one-half the street at a time.

Whenever possible, widen the shoulder on the opposite side to facilitate traffic flow.

Provide temporary surfacing on shoulders as necessary.

G. Whenever the Contractor’s operations create a condition hazardous to the public, furnish, erect, and maintain such fences, barricades, lights, signs and other devices as are necessary to prevent accidents or damage or injury to the public.

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H. Maintain top of backfilled trenches before they are paved, to allow normal vehicular traffic to pass over. Provide temporary access for driveways where required. Cleanup operations shall follow immediately behind backfilling.

I. When flaggers and guards are required by regulation or when deemed necessary for safety, furnish them with approved orange wearing apparel and other regulation traffic control devices complying with the provisions of the California MUTCD and State of California Department of Transportation Standard Specifications and Standard Plans.

J. Coordination: Coordinate traffic routing with that of others working in the same or adjacent areas.

K. Under no circumstances shall access to businesses or residences be held up more than 30 minutes at any one time. The Contractor may coordinate with property and business owners to schedule work so that longer delays do not adversely affect residents or business owners to their satisfaction. In addition, Contractor shall give personal notice to all affected property owners as specified in paragraph M, hereinbefore. Before closing any street to through traffic, Contractor shall obtain prior approval from the Engineer seven (7) days in advance of closure.

Contractor shall at all times provide access to public facilities such as schools, etc. and make provisions for passage of emergency vehicles.

L. Should the Contractor appear to be neglectful or negligent in furnishing warning and productive measures as above specified, the Engineer may direct attention to the existence of hazard, and the necessary warning and protective measures shall be furnished and installed by the Contractor at his expense, without cost to the City. Should the Engineer point out any inadequacy of warning and protective measures, such action on the part of the Engineer shall not relieve the Contractor from responsibility for public safety nor abrogate his obligation to furnish and pay for these devices
M. The Contractor shall keep the City of Sebastopol Fire Department and Police Department informed regarding the closure or restriction of any traveled way. At a minimum, the Contractor shall call the Fire Department at (707) 823-8061, daily to report any traveled way closure. This requirement applies immediately upon closure for that day and again immediately after removal of the closure. For closures over multiple days, the daily notification still applies. This requirement does not apply for single lane closures on multiple lane local streets.

1.8 CLEANING DURING CONSTRUCTION
A. General:

1. Rubbish shall not be allowed to accumulate on the site and the Contractor shall collect and remove, from time to time, such rubbish and debris incident to the execution of the contract as, in the opinion of the Engineer, may be undesirable or disfiguring on the premises. The Contractor may not burn any material on the site. Wet down exterior surfaces prior to sweeping to prevent blowing of dust and debris.

2. Provide approved containers for collection and disposal of waste materials, debris, and rubbish. At least at weekly intervals, dispose of such waste materials, debris, and rubbish offsite.

3. At least weekly, brush sweep the entry drive and roadways, and all other streets and walkways affected by Work and where adjacent to Work. There will be times when sweeping will be required daily. Remove all mud and debris tracked onto roadway as soon as possible.

4. Do not allow material to fall out of trucks onto any roadway when hauling away cleared and grubbed vegetation, particularly the branches and thorns of Kiave trees to be removed.

1.9 REMOVAL OF TEMPORARY FACILITIES AND UTILITIES
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A. At such time or times any temporary construction facilities and utilities are no longer required for the Work, Contractor shall notify the Engineer of his intent and schedule for removal of the temporary facilities and utilities, and obtain the Engineer’s approval before removing the same.

As approved, Contractor shall remove the temporary facilities and utilities from the site as his property and leave the site in such condition as specified, as directed by the Engineer, and/or as shown on the Plans.

B. After completion of the project, all temporary utility services shall be disconnected or removed and all affected improvements shall be restored to their original condition by the Contractor at no cost to the City.

C. The condition of the site shall be left in a condition that will restore original drainage, evenly graded, seeded or planted as necessary, and left with an appearance equal to, or better than original.

END OF SECTION
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SECTION 01 60 00

PRODUCT REQUIREMENTS
PART 15 GENERAL

1.1 SECTION INCLUDES
A. Products.

B. Product delivery requirements.

C. Product storage and handling requirements.

D. Product options.

E. Product substitution procedures.

1.2 PRODUCTS
A. All products shall be new unless specified otherwise.

B. Furnish products of qualified manufacturers suitable for intended use. Furnish products of each type by single manufacturer unless specified otherwise.

C. Do not use materials and equipment removed from existing premises, except as specifically permitted by Contract Documents.

D. Furnish interchangeable components from same manufacturer for components being replaced.

1.3 PRODUCT DELIVERY REQUIREMENTS
A. Schedule delivery of products or equipment as required to allow timely installation and to avoid prolonged storage.

B. Transport and handle products in accordance with manufacturer's instructions.

C. Deliver products or equipment in manufacture’s original unbroken cartons or other containers designed and constructed to protect the contents from physical or environmental damage.

D. Promptly inspect shipments to ensure products comply with requirements, quantities are correct, and products are undamaged.

E. Provide equipment and personnel to handle products by methods to prevent soiling, disfigurement, or damage.

F. Clearly and fully mark and identify as to manufacturer, item and installation location.

1.4 PRODUCT STORAGE AND HANDLING REQUIREMENTS
A. Store and protect products in accordance with manufacturers' instructions. Provide manufacturer’s instructions for storage and handling.

B. Store with seals and labels intact and legible.

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C. Store sensitive products in weather tight, climate controlled, enclosures in an environment favorable to product.

D. Store pumps, motors, electrical equipment, and other equipment having antifriction or sleeve bearings in weather tight warehouses.

E. For exterior storage of fabricated products, place on sloped supports above ground.

F. Provide bonded off-site storage and protection when site does not permit on-site storage or protection.

G. Cover products subject to deterioration with impervious sheet covering. Provide ventilation to prevent condensation and degradation of products.

H. Store loose granular materials on solid flat surfaces in well-drained area. Prevent mixing with foreign matter.

I. Provide equipment and personnel to store products by methods to prevent soiling, disfigurement, or damage.

J. Arrange storage of products to permit access for inspection. Periodically inspect to verify products are undamaged and are maintained in acceptable condition.

1.5 STORAGE FACILITIES
A. Temporary Storage Building:

1. Provide a weatherproof temporary storage building or other secure facility specifically for the purpose of providing for protection of products and equipment.

2. Equip building with lockable doors and lighting and provide electrical service for equipment space heaters and heating or ventilation as necessary to provide storage environments acceptable to specified manufacturers.

3. Provide method of storage of products and equipment off the ground.

1.6 PRODUCT OPTIONS
A. Products Specified by Reference Standards or by Description Only: Any product meeting those standards or description.

B. Products Specified by Naming One or More Manufacturers: Products of one of manufacturers named and meeting specifications, no options or substitutions allowed.

C. Products Specified by Naming One or More Manufacturers with Provision for Substitutions:

Submit request for substitution for any manufacturer not named in accordance with the following article.

1.7 PRODUCT SUBSTITUTION PROCEDURES
A. Engineer will consider requests for Substitutions only within 30 days after date of OwnerContractor Agreement.

B. Substitutions may be considered when a product becomes unavailable through no fault of Contractor.

C. Document each request with complete data substantiating compliance of proposed Substitution with Contract Documents.

D. A request constitutes a representation that Contractor:

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1. Has investigated proposed product and determined that it meets or exceeds quality level of specified product.

2. Will provide same warranty for Substitution as for specified product.

3. Will coordinate installation and make changes to other Work which may be required for the Work to be complete with no additional cost to Owner.

4. Waives claims for additional costs or time extension which may subsequently become apparent.

5. Will reimburse Owner for review or redesign services associated with re-approval by authorities having jurisdiction.

E. Substitutions will not be considered when they are indicated or implied on Shop Drawing or Product Data submittals, without separate written request, or when acceptance will require revision to Contract Documents.

F. Substitution Submittal Procedure:

1. Submit three copies of request for Substitution for consideration. Limit each request to one proposed Substitution.

2. Submit Shop Drawings, Product Data, and certified test results attesting to proposed product equivalence. Burden of proof is on proposer.

3. Engineer will notify Contractor in writing of decision to accept or reject request.

PART 16 PRODUCTS - Not Used
PART 17 EXECUTION - Not Used

END OF SECTION
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SECTION 01 70 00

PROJECT CLOSEOUT
PART 18 GENERAL

1.1 FINAL CLEANUP
A. The Contractor shall promptly remove all rubbish, debris, unused materials, concrete forms, construction equipment, and temporary structures and facilities used during construction. The Contractor may not burn any material on the site. Final acceptance of the Work by the City will be withheld until the Contractor has satisfactorily complied with the foregoing requirements for final cleanup of the project site.

1.2 CLOSEOUT TIMETABLE
A. The Contractor shall establish dates for equipment testing, acceptance periods, (as required under the Contract). Such dates shall be established not less than two weeks prior to beginning any of the foregoing items, to allow the City, the Engineer, and their authorized representatives and consultants sufficient time to schedule attendance at such activities.

B. All temporary buildings, including field offices, storage buildings, and sheds shall be removed from the project site 7 days after completion of the Work. All temporary services such as water, power, utilities, service contracts, pager contracts, telephones, and other temporary services shall remain in service for 7 days following approval of substantial completion of the Work by the City, and shall be discontinued within 7 days after.

1.3 FINAL INSPECTION
A. The Contractor shall notify the Engineer at least ten (10) working days prior to the anticipated date of completion of all work specified in the contract. Upon completion of the work, the Engineer shall proceed with final inspection and shall complete such inspection as promptly as practicable. The time required for such inspection and the making of any corrections as a result thereof shall be included in the contract performance time.

1.4 FINAL SUBMITTALS
A. The Contractor, prior to requesting its final progress payment, shall submit the following items to the Engineer:

1. Written guarantees or warranties.

2. Certificates of compliance.

3. Completed final Record Drawings.

4. Certificates of inspection and acceptance by local governing agencies having jurisdiction.

1.5 COMPLETION OF THE WORK
A. The date of substantial completion of the Project shall be the date when the construction is sufficiently completed, in accordance with the Contract Documents, as modified by any change orders agreed to by the parties, so that the City can occupy or utilize the project for the use for which it was intended, and the City has accepted the Project.

1.6 REMAINING PUNCH LIST ITEMS
A. Upon attaining substantial completion and upon acceptance of the Work by the City, by agreement between the parties some small remaining punch list items may remain to be completed by the Contractor.

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B. Failure of the Contractor to complete or correct all such outstanding punch list work to the satisfaction of the Engineer shall constitute a waiver by the Contractor of all rights to any and all claims it may have to all monies withheld by the City under the Contract to cover the value of such uncompleted or uncorrected items.

1.7 MAINTENANCE, CORRECTION AND REPAIR PERIOD
A. The Contractor shall comply with the correction and repair requirements contained in the General Conditions.

B. Replacement of earth fill or backfill, where it has settled below the required finish elevations, shall be considered as a part of such required repair work, and any repair or resurfacing constructed by the Contractor which becomes necessary by reason of such settlement shall likewise be considered as a part of such required repair work unless the Contractor shall have obtained a statement in writing from the affected private owner or public agency releasing the City from further responsibility and liability in connection with such repair or resurfacing.

C. The Contractor shall make all repairs and replacements promptly upon receipt of written order from the City. If the Contractor fails to make such repairs or replacements promptly, the City reserves the right to do the work or to have the work done by others and the Contractor and its Surety shall be liable to the City for the cost thereof.

1.8 ACCEPTANCE AND FINAL PAYMENT
A. Final acceptance of the project is in accordance with Section 10-1.03 of the General Conditions. The Engineer shall certify to the City that the contract is complete and include with the certification the amount of the final payment due the Contractor. All progress or partial payments made prior to the final payment are subject to correction in the final estimate and payment.

1.9 RELEASE OF CLAIMS
A. After completion of work, and prior to final payment, the Contractor shall furnish to the conditional or unconditional waiver upon final payment, properly executed by the Contractor, releasing claims against the City of Sebastopol arising out of the contract, other than claims specifically excepted from the operation of the release.

PART 19 PRODUCTS - Not Used
PART 20 EXECUTION - Not Used

END OF SECTION
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SPECIFICATIONS
SECTION 01 72 00

RECORD DOCUMENTS
PART 21 GENERAL

1.1 SUBMITTALS
A. Quality Control Submittals: Written procedures for maintaining and markup of record documents. Contract description.

B. Contract Closeout Submittal: Record Documents in accordance with the requirements of this section. Submit prior to application for final payment.

1.2 QUALITY ASSURANCE
A. Furnish a qualified and experienced person, whose duty and responsibility shall be to maintain record documents.

B. Accuracy of Records:

1. Coordinate changes within record documents, making neat, legible and accurate entries on each page of Specifications and each sheet of Drawings and other documents where such entry is required to show change.

2. Purpose of project record documents is to provide factual information regarding aspects of Work, both concealed and visible, to enable future modification of Work to proceed without lengthy and expensive site measurement, investigation, and examination.

C. Make entries within 24 hours after receipt of information that a change in Work has occurred.

D. Prior to submitting each request for progress payment, request Engineer's review and approval of current status of record documents. Failure to properly maintain, update, and submit record documents may result in return of Contractor's Application for Progress Payment by Engineer.

1.3 DELIVERY, STORAGE, AND HANDLING
A. Maintain record documents completely protected from deterioration, loss, and damage until completion of Work.

B. In event of loss of recorded data, use means necessary to again secure data to Engineer’s acceptance. Such means shall include, if necessary in Engineer's opinion, removal and reconstruction of covering materials, at no additional cost to the City.

PART 22 PRODUCTS

1.1 RECORD DOCUMENTS
A. Promptly following the Notice to Proceed, Engineer will provide 1 complete hardcopy set of full size drawings to the Contractor for use in preparing Record Drawings.

PART 23 EXECUTION

1.1 MAINTENANCE OF RECORD DOCUMENTS
A. General:

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1. Label or stamp each record document with title, "Record Documents," in neat large printed letters.

2. Record information concurrently with construction progress and within 24 hours after receipt of information that change has occurred. Do not cover or conceal Work until required information is recorded.

B. Preservation

1. Maintain documents in a clean, dry, legible condition and in good order. Do not use record documents for construction purposes.

2. Make documents and Samples available at all times for observation by Engineer.

C. Making Entries on Drawings

1. Using an erasable colored pencil (not ink or indelible pencil), clearly describe change by graphic line and note as required.

Color Coding:
a. Green when showing information deleted from Drawings. b. Red when showing information added to Drawings.
c. Blue and circled in blue to show notes.

2. Date entries.

3. Call attention to entry by "cloud" drawn around area or areas affected.

4. Legibly mark to record actual changes made during construction, including, but not limited to:
a. Depths of various elements of foundation in relation to finished first floor data if not shown or where depth differs from that shown.
b. Horizontal and vertical locations of existing and new underground facilities and appurtenances, and other underground structures, equipment, or Work. Reference to at least two measurements of permanent surface improvements. c. Location of internal utilities and appurtenances concealed in the construction referenced to visible and accessible features of the structure. d. Locate existing facilities, piping, equipment, and items critical to the interface between existing physical conditions or construction and new construction. e. Changes made by Addenda and Field Orders, Work Change Directive, Change Order, Written Amendment, and Engineer's written interpretation and clarification using consistent symbols for each and showing appropriate document tracking number.

5. Dimensions on Schematic Layouts: Show on record drawings, by dimension, the centerline of each run of items such as are described in previous subparagraph above. a. Clearly identify the item.
b. Show, by symbol or note, vertical location of item ("under slab," "in ceiling plenum, " "exposed," and the like).
c. Make identification so descriptive that it may be related reliably to Specifications.

D. Make entries in other pertinent documents as accepted by Engineer.

END OF SECTION
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SPECIFICATIONS
SECTION 01 74 19

CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL
4 GENERAL
1 SUMMARY
a Section includes administrative and procedural requirements for the following:
i Recycling nonhazardous construction waste.
ii Disposing of nonhazardous demolition and construction waste. b Related Sections:
i Section 02 41 10 – Demolition, Salvage and Abandonment: for disposition of waste resulting from site demolition activities.
2 DEFINITIONS
a Construction Waste: Building and site improvement materials and other solid waste resulting from construction, remodeling, renovation, or repair operations. Construction waste includes packaging.
b Demolition Waste: Building and site improvement materials resulting from demolition or selective demolition operations.
c Disposal: Removal off-site of demolition and construction waste and subsequent sale, recycling, reuse, or deposit in landfill or incinerator acceptable to authorities having jurisdiction. d Recycle: Recovery of demolition or construction waste for subsequent processing in preparation for reuse.
e Salvage: Recovery of demolition or construction waste and subsequent sale or reuse in another facility.
f Salvage and Reuse: Recovery of demolition or construction waste and subsequent incorporation into the Work.
3 PERFORMANCE REQUIREMENTS
a Construction Waste:
i Site-clearing and demolition waste.
ii Soils.
iii Concrete and asphalt.
iv Lumber.
v Wood sheet materials.
vi Metals.
vii Piping and fittings.
viii Electrical conduit.
ix Packaging: Regardless of salvage/recycle goal indicated in paragraph above, salvage or recycle 100 percent of the following uncontaminated packaging materials:
1 Paper.
2 Cardboard.
3 Boxes.

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4 Plastic sheet and film.
5 Polystyrene packaging.
6 Wood crates.
7 Plastic pails.
8 HI-5 beverage containers.
4 ACTION SUBMITTALS
a Waste Management Plan: Submit plan within 7 days of date established for the Notice to Proceed.
5 INFORMATIONAL SUBMITTALS
a Waste Reduction Report: Concurrent with final Application for Payment, submit report.

Include the following information:
i Material category.
ii Generation point of waste.
iii Total quantity of waste in tons.
iv Quantity of waste salvaged, both estimated and actual in tons. v Quantity of waste recycled, both estimated and actual in tons. vi Total quantity of waste recovered (salvaged plus recycled) in tons. vii Total quantity of waste recovered (salvaged plus recycled) as a percentage of total waste.
b Waste Reduction Calculations: Before request for Substantial Completion, submit calculated end-of-Project rates for salvage, recycling, and disposal as a percentage of total waste generated by the Work.
c Recycling and Processing Facility Records: Indicate receipt and acceptance of recyclable waste by recycling and processing facilities licensed to accept them. Include manifests, weight tickets, receipts, and invoices.
d Landfill and Incinerator Disposal Records: Indicate receipt and acceptance of waste by landfills and incinerator facilities licensed to accept them. Include manifests, weight tickets, receipts, and invoices.
6 QUALITY ASSURANCE
a Regulatory Requirements: Comply with hauling and disposal regulations of authorities having jurisdiction.
7 WASTE MANAGEMENT PLAN
a General: Develop a waste management plan according to ASTM E 1609 and requirements of this Section. Indicate quantities by weight or volume, but use same units of measure throughout waste management plan.

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SPECIFICATIONS
5 PRODUCTS (NOT USED)
6 EXECUTION
1 PLAN IMPLEMENTATION
a General: Implement approved waste management plan. Provide handling, containers, storage, signage, transportation, and other items as required to implement waste management plan during the entire duration of the Contract.
i Comply with Division 01 Section "Temporary Facilities and Controls" for operation, termination, and removal requirements.
b Training: Train workers, subcontractors, and suppliers on proper waste management procedures, as appropriate for the Work occurring at Project site. i Distribute waste management plan to everyone concerned within three days of submittal return.
ii Distribute waste management plan to entities when they first begin work on-site.

Review plan procedures and locations established for salvage, recycling, and disposal.
c Site Access and Temporary Controls: Conduct waste management operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.
i Designate and label specific areas on Project site necessary for separating materials that are to be salvaged, recycled, reused, donated, and sold. ii Comply with Division 01 Section "Temporary Facilities and Controls" for controlling dust and dirt, environmental protection, and noise control. 2 RECYCLING CONSTRUCTION WASTE, GENERAL
a General: Recycle paper and beverage containers used by on-site workers. b Recycling Incentives: Revenues, savings, rebates, tax credits, and other incentives received for recycling waste materials shall accrue to Contractor. c Preparation of Waste: Prepare and maintain recyclable waste materials according to recycling or reuse facility requirements. Maintain materials free of dirt, adhesives, solvents, petroleum contamination, and other substances deleterious to the recycling process. d Procedures: Separate recyclable waste from other waste materials, trash, and debris.

Separate recyclable waste by type at Project site to the maximum extent practical according to approved construction waste management plan.
i Provide appropriately marked containers or bins for controlling recyclable waste until they are removed from Project site. Include list of acceptable and unacceptable materials at each container and bin.
1 Inspect containers and bins for contamination and remove contaminated materials if found.

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ii Stockpile processed materials on-site without intermixing with other materials.

Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.
iii Stockpile materials away from construction area. Do not store within drip line of remaining trees.
iv Store components off the ground and protect from the weather. v Remove recyclable waste off Owner's property and transport to recycling receiver or processor.
3 RECYCLING CONSTRUCTION WASTE
a Packaging:
i Cardboard and Boxes: Break down packaging into flat sheets. Bundle and store in a dry location.
ii Polystyrene Packaging: Separate and bag materials.
iii Pallets: As much as possible, require deliveries using pallets to remove pallets from Project site. For pallets that remain on-site, break down pallets into component wood pieces and comply with requirements for recycling wood. iv Crates: Break down crates into component wood pieces and comply with requirements for recycling wood.
b Site-Clearing Wastes:
i No burning of brush or any other materials will be allowed on the site. ii Any and all organic material that has been cleared and grubbed must be stockpiled and composted such that seeds of invasive species by the heat of composting over a period of six to nine months. Composted material shall be used as organic mulch in accordance with Division 32 Section “Plants”.
c Wood Materials:
i Clean Cut-Offs of Lumber: Grind or chip into small pieces. ii Clean Sawdust: Bag sawdust that does not contain painted or treated wood. 4 DISPOSAL OF WASTE
a General: Except for items or materials to be salvaged, recycled, or otherwise reused, remove waste materials from Project site and legally dispose of them in a landfill or incinerator acceptable to authorities having jurisdiction.
i Except as otherwise specified, do not allow waste materials that are to be disposed of accumulate on-site.
ii Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.
b Burning: Do not burn waste materials.
c Disposal: Transport waste materials off Owner's property and legally dispose of them. d Washing out of concrete trucks will not be allowed at the site.

END OF SECTION
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SPECIFICATIONS
SECTION 02 01 00

SITE CONDITIONS
PART 24 GENERAL

1.1 DESCRIPTION
A. General: All information obtained by the Engineer regarding site conditions and existing underground utilities and similar data are shown on the Drawings. No Geotechnical Investigation Report has been prepared for this project.

B. Information derived from inspection of topographic maps, or from plans showing locations of utilities and structures will not in any way relieve the Contractor from any risk, or from properly examining the site and making such additional investigations as he may elect, or from properly fulfilling all the terms of the Contract Documents.

C. Related Work described elsewhere:

1. Section 02 01 10 - Existing Utilities and Underground Structures

2. Section 31 00 00 - Earthwork

1.2 CONTRACTOR'S RESPONSIBILITIES
A. The Contractor shall satisfy himself as to the nature and location of the Work, the general and local conditions, particularly those bearing upon availability of transportation, disposal, handling and storage of materials, availability of labor, water, sanitary sewer, electric power, communications, roads, and uncertainties of weather, river stages, or similar physical conditions at the site, the conformation and conditions of the ground, the character of equipment facilities needed preliminary to and during the prosecution of the Work and all other matters which can in any way affect the Work or the cost thereof under this Contract.

B. The Contractor shall further satisfy himself as to the character, quality, and quantity of surface and subsurface materials to be encountered by inspecting the, and information presented by the plans and specifications made as part of this Contract. Any failure by the Contractor to acquaint himself with all available information will not relieve him from responsibility for properly estimating the difficulty or cost of successfully performing the Work.

C. The Contractor shall anticipate underground obstructions such as utility lines, foundations, groundwater, stumps, varying soil conditions, and debris. No extra payment will be allowed for the removal, replacement, repair, or possible increased cost caused by underground obstructions indicated in the Contract Documents. Any such lines or obstructions indicated on the Drawings show only the approximate location and must be verified in the field by the Contractor.

D. The Contractor shall note that portions of the existing road surfaces are not in structural sections and that heavy truck and equipment operations may cause road surface damage in excess of normal usage. If damage does occur due to construction activity, the Engineer shall be notified immediately before proceeding with the Work, or causing more damage to occur.

Damage caused to the existing asphalt road surface by Contractor's operations shall be repaired per Section 32 12 16 “Hot Mix Asphalt Paving.”

1.3 ADDITIONAL INFORMATION
A. Prior to bidding, bidders may make their own subsurface investigations subject to time schedules and arrangements approved in advance by the City. Before any subsurface test holes are excavated, obtain clearance from City.

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SPECIFICATIONS
PART 25 PRODUCTS (NOT USED)
PART 26 EXECUTION (NOT USED)

END OF SECTION
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SPECIFICATIONS
SECTION 02 01 10

EXISTING UTILITIES AND UNDERGROUND STRUCTURES
PART 27 GENERAL

1.1 SUMMARY
A. Section includes: Contractor is responsible for locating and protecting existing utilities, facilities and underground structures. Responsibilities shall include but are not limited to those defined in this section.

B. Refer to Drawings for the approximate locations of utilities and underground structures.

1.2 GENERAL
A. The Contractor shall protect all existing utilities and improvements not designated for removal, and shall restore damaged or temporarily relocated utilities and improvements to a condition equal to or better than they were prior to such damage or temporary relocation, all in accordance with requirements of the Contract Documents.

B. The approximate locations of known existing utilities are shown in the Drawings. The Contractor shall verify the location of existing utilities at least 2 working days but no more than 14 calendar days prior to the beginning excavation by notifying Underground Services Alert (USA) North at 811. The Contractor shall notify the Engineer of any utilities not shown in the Drawings or substantially different from the Drawings. The Contractor shall make exploratory excavations of all utilities including those not shown in the Drawings that may interfere with the Work. All such exploratory excavations shall be performed as soon as practicable after award of the Contract and, in any event, a sufficient time in advance of construction to avoid possible delays to the Contractor’s Work.

C. The number of exploratory excavations required shall be that number which is sufficient to determine the alignment and grade of the utilities.

1.3 CALIFORNIA ADMINISTRATIVE CODE
A. Section 1540(a)1 of Construction Safety Orders (Title 8) California Administrative Code, Section 1540 states:

B. (1) “Prior to opening and excavation, effort shall be made to determine whether underground installations; i.e., sewer, water, fuel, electric lines, etc., will be encountered and, if so, where such underground installations are located. When the excavation approaches the approximate location of such an installation, the exact location shall be determined by careful probing or hand digging; and, when it is uncovered, adequate protection shall be provided for the existing installation. All known owners of underground facilities in the area concerned shall be advised of proposed Work at least 48 hours prior to the start of actual excavation.” C. The City and Engineer have determined the location of public utilities and underground structures as well as existing mapping permits. However, in accordance with California’s Administrative Code, Section 1540, the Contractor shall make the effort to determine the exact location of underground installations.

1.4 PUBLIC UTILITIES AND AGENCIES AFFECTED
A. Electrical, Pacific Gas & Electric Company has jurisdiction over electrical power - Call: (707) 579-6356 a minimum of 48 hours prior to any excavation within 10 feet of existing electrical lines. It should be noted that where a structure is known to receive service and does not have Agenda Item Number 6
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overhead service, then underground service shall be assumed to exist. For underground utility location call Underground Service Alert (USA) at (800) 227-2600.

B. Gas, Pacific Gas & Electric Company has jurisdiction over gas. Call: (707) 468-3954 a minimum of 48 hours prior to any excavation within 10 feet of existing gas.

C. Telephone Service, AT&T - Call: (707) 575-2077. It should be noted that where service to a structure is known to receive service and does not have overhead service, then underground service shall be assumed to exist. For assistance with location of underground telephone facilities, call U.S.A. at (800) 227-2600.

D. Communications/Internet, Comcast - Call: (323) 342-5552. For assistance with location of underground telephone facilities, call U.S.A. at (800) 227-2600.

E. Water Service, City of Sebastopol has jurisdiction over water utilities. Call: (707) 823-5331.

F. Drainage, City of Sebastopol has jurisdiction over drainage facilities in the area. Call: (707) 823-5331.

G. Sewer Service, City of Sebastopol has jurisdiction over sanitary sewer facilities in the area.

Call: (707) 823-5331.

1.5 PROTECTION OF STREET OR ROADWAY MARKERS
A. The Contractor shall not destroy, remove, or otherwise disturb any existing survey markers, street monuments, or other existing street or roadway markers without proper authorization.

No pavement breaking or excavation shall be started until all survey or the permanent markers points that will be disturbed by the construction operations have been properly referenced. All survey markers or points disturbed by the Contractor shall be accurately replaced after all street or roadway resurfacing has been completed.

1.6 REPLACEMENT OF MONUMENTS
A. The Contractor shall be responsible for the preservation of all existing survey monuments or permanent benchmarks. Any monuments or benchmarks disturbed or destroyed by the Contractor shall be referenced and replaced by a California licensed land surveyor. A corner record or record of survey, as appropriate, shall be filed by the licensed land surveyor as required by the most current California Professional Land Surveyors’ Act with the appropriate local government agencies.

B. Standard brass marker shall be provided by the Contractor. Brass marker shall be placed in survey monument before the concrete block has acquired its initial set and shall be firmly bedded in the concrete. The concrete block shall be so located that when the marker is installed, the reference point will fall within a one-inch circle in the center of the marker.

1.7 RESTORATION OF PAVEMENT
A. General. All paved areas, including asphalt concrete berms cut or damaged during construction, shall be replaced with similar materials and of a thickness equal to the existing plus 1 inch or 6 inches, whichever is greater, except where specific resurfacing requirements have been called for in the Contract Documents. Restoration of paved areas shall be in accordance with the requirements of Section 32 12 16, “Hot Mix Asphalt Paving.” All pavements that are subject to partial removal shall be neatly sawcut in straight lines.

B. Temporary Resurfacing. The Contractor shall place temporary surfacing promptly after backfilling and shall maintain such surfacing until final restoration of improvements.

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C. Permanent Resurfacing. Damaged edges of pavement along excavations and elsewhere shall be trimmed back by saw cutting in straight line to provide a clean, sound, vertical joint before permanent replacement of an excavated or damaged portion of pavement. All pavement restoration and other facilities restoration shall be constructed to finish grades compatible with adjacent undisturbed pavement and other facilities (i.e., valve lids, manhole covers, etc.). The Contractor shall replace damaged pavement striping in kind.

D. Restoration of Sidewalks. Wherever sidewalks have been removed for purposes of construction, the Contractor shall place suitable temporary sidewalks promptly after backfilling and shall maintain them in satisfactory condition until the final restoration there has been made.

1.8 EXISTING UTILITIES AND IMPROVEMENTS
A. General. The Contractor shall protect all existing underground utilities and other improvements that may be impaired during construction operations. It shall be the Contractor’s responsibility to ascertain the actual location of all existing utilities and other improvements that will be encountered in its construction operations, and to see that such utilities or other improvements are adequately protected from damage due to such operations. The Contractor shall take all possible precautions for the protection of unforeseen utility lines to provide for uninterrupted service and to provide such special protection as may be necessary.

B. Utilities to be moved. In case it shall be necessary to move the property of any public utility or franchise holder, such utility company or franchise holder will, upon request of the Contractor, be notified by the City to move such property. Time of relocation of the utility by the utility company is not a responsibility of the City. When utility lines that are to be removed are encountered within the area of operations, the Contractor shall notify the Engineer a sufficient time in advance for the necessary measures to be taken to prevent interruption of service.

C. Where the proper completion of the Work requires the temporary or permanent removal and/or relocation of an existing utility or other improvement that is indicated, the Contractor shall remove and, without unnecessary delay, temporarily replace or relocate such utility or improvement in a manner satisfactory to the Engineer and the City of the facility. In all cases of such temporary removal or relocation, restoration to former location shall be accomplished by the Contractor in a manner that will restore or replace the utility or improvement as nearly as possible to its former location and to equal or better condition as found prior to removal.

D. City’s Right of Access. The right is reserved to the City and to the owners of public utilities and franchises to enter at any time upon any public street, alley, right-of-way, or easement for the purpose of making changes in their property made necessary by the Work of this Contract.

E. Underground Utilities Indicated. Existing utility lines that are indicated or the locations of which are made known to the Contractor prior to excavation and that are to be retained, and all utility lines that are constructed during excavation operations shall be protected from damage during excavation and backfilling, and if damaged, shall be immediately repaired or replaced by the Contractor to the satisfaction of the Engineer.

F. Underground Utilities not Indicated. In the event that the Contractor damages any existing utility lines that are not indicated or the locations of which are not made known to the Contractor prior to excavation, a written report there-of shall be made by the Contractor to the City.

G. All costs of locating, repairing damage not due to failure of the Contractor to exercise reasonable care, and removing or relocating such utility facilities not shown in the Contract documents with reasonable accuracy, and for equipment on the project which was actually working on that portion of the Work which was interrupted or idled during such Work will be paid for as extra Work.

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H. Approval of Repairs. All repairs to a damaged utility or improvement are subject to inspection and approval by an authorized representative of the utility or improvement City before being concealed by backfill or other Work. Contractor to schedule with City for all inspections.

I. Maintain In Service. All power and telephone or the communication cable ducts, gas and water mains, irrigation lines, sanitary sewer lines, storm drain lines, poles, and overhead power and communication wires and cables encountered along the line of Work shall remain continuously in service during all the operations under the Contract, unless other arrangements satisfactory to the Engineer are made with the City of said pipelines, duct, main, irrigation lines, sanitary sewer, storm drain, pole, or wire or cable. The Contractor shall be responsible for and shall repair all damage due to its operations, and the provisions of this section shall not be abated even in the event such damage occurs after backfilling or is not discovered until after completion of the backfilling.

1.9 TREES WITHIN STREET RIGHTS-OF-WAYS AND PROJECT LIMITS A. General. The Contractor shall exercise all necessary precautions so as not to damage or destroy any trees or shrubs, including those lying within street rights-of-way and project limits, and shall not trim or remove any trees unless such trees have been approved for trimming or removal by the City. All existing trees and shrubs that are damaged during construction shall be trimmed or replaced by the Contractor or a certified tree company under permit from the City. Tree trimming and replacement shall be accomplished in accordance with the following paragraphs.

B. Trimming. Symmetry of the tree shall be preserved; no stubs or splits or torn branches left; clean cuts shall be made close to the trunk or large branch. Spikes shall not be used for climbing live trees. All limbs over 1-1/2 inches in diameter shall be coated with an asphaltic emulsion material.

C. Replacement. The Contractor shall immediately notify the City if any tree is damaged by the Contractor’s operations. If, in the opinion of the City, the damage is such that replacement is necessary, the Contractor shall replace the tree at its own expense. The tree shall be of a like size and variety as the tree damaged, or, if of a smaller size, the Contractor shall pay to the City of said tree a compensatory payment acceptable to the tree City, subject to the approval of the jurisdictional agency or City. The size of the trees shall be not less than 1-inch diameter nor less than 6 feet in height.

1.10 NOTIFICATION BY THE CONTRACTOR
A. Prior to any excavation in the vicinity of any existing underground facilities, including all water, sanitary sewer, storm drain, gas, or other pipelines; all buried electric power, communications, or television cables; all traffic signal and street lighting facilities; and all roadway; the Contractor shall notify the respective authorities representing the owners or agencies responsible for such facilities not less than three (3) days nor more than seven (7) days prior to excavation so that a representative of said owners of agencies can be present during such Work if they so desire. The Contractor shall also notify USA at (800) 227-2600 at least 2 working days, but no more than 14 calendar days, prior to such excavation.

PART 28 PRODUCTS (NOT USED)
PART 29 EXECUTION

1.1 CONTRACTOR RESPONSIBILITY
A. The Contractor shall anticipate water, sanitary sewer, electrical, gas, communication, drainage and telephone services. It may be expected that there will be variation in location from that as Agenda Item Number 6
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shown on the Drawings to the actual location. Contractor responsible for verifying actual location in the field after pre-marking by the various utilities affected.

B. No extra payment will be allowed for the removal, replacement, repair, or possible increased cost caused by inadvertent or planned interception and breaking of underground obstructions which may exist.

C. It should be understood that the various utilities are indicated on the Drawings to show only the approximate location and must be verified in the field by the Contractor. The various utility agencies will cooperate with the Contractor to endeavor to familiarize him with all known underground utilities obstructions, but this will not relieve the Contractor from full responsibility in anticipating and locating their actual location.

D. The Contractor, in conjunction with the affected utility company(s), shall pothole and establish the horizontal and vertical location of all utilities shown on the Drawings and marked in the field. This may be done on an area-by-area basis, but shall be accomplished at least five working days in advance of the date of construction within such area. Any discrepancies (horizontal and/or vertical) between the location of a utility found by the potholing operation than that shown on the Drawings shall be brought to the Engineer’s attention immediately.

Potholing shall be required at the connection to existing facilities prior to the shop drawing submittals.

1.2 PRIOR INVESTIGATION
A. Prior to bidding, each bidder shall make his own subsurface investigations, talk to the various utilities affected to secure, for his own information, the knowledge of each utility with the precise location of their facilities so that he may take into account in his bid the difference in location from that believed to exist to that which may actually prove to be the precise location.

END OF SECTION

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SPECIFICATIONS
SECTION 02 41 10

DEMOLITION, SALVAGE AND ABANDONMENT
PART 30 GENERAL

1.1 DESCRIPTION
A. The Contractor shall furnish all tools, equipment, materials, and supplies and shall perform all labor as required for the demolition, abandonment, or removal of pavements and structures and utility removals and abandonments, as indicated on the Drawings and as specified herein.

B. The Work of this Section shall include, but shall not be limited to the following items:

1. Demolition of asphalt pavement, concrete structures, concrete pavement, curb, gutter, sidewalk, underground piping, and other features as required to install utilities, structures, concrete pavement and asphalt pavement.

2. Salvage of existing materials and equipment for reuse, including fire hydrants, water service boxes, water meters.

3. Abandonment or removal of existing pipe and other utilities as indicated on the Drawings and specified herein.

1.2 RELATED WORK SPECIFIED ELSEWHERE
A. Section 02 01 00 - Site Conditions
B. Section 02 01 10 - Existing Utilities and Underground Structures C. Section 31 00 00 - Earthwork

1.3 DEMOLITION/ABANDONMENT COORDINATION
A. The Contractor shall anticipate and coordinate construction demolition and improvement as shown on the Drawings and described in the Construction Documents.

B. The Contractor shall carefully coordinate the extent of the Work in areas where existing utilities shall be reconnected to new facilities and where existing facilities shall remain operational.

C. While Work is being performed, the Contractor shall provide adequate access for normal operations, including access, routine operation and maintenance. The Contractor shall erect and maintain fences, warning signs, barricades, and other devices as required for the protection of the Contractor's and City’s employees and the public around pipelines, structures and excavations. The Contractor shall remove all such protection when the demolition/abandonment operations are completed, or as Work progresses, or when directed by the Engineer or City.

D. The Contractor shall coordinate all Work with the Engineer or City.

E. The Contractor shall be responsible for scheduling and coordinating any required shut down and/or relocations as necessary for performance of the work.

1.4 SUBMITTALS
A. Demolition and Abandonment Plan: The Contractor shall prepare and submit a Utility Demolition and Abandonment Plan to the Engineer for review at least 14 days prior to start of demolition. The procedures shall provide for safe conduct of the Work, careful deactivation, removal and disposition of materials and equipment, protection of property which are to remain Agenda Item Number 6
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SPECIFICATIONS
undisturbed, coordination with existing facilities to remain in service, and timely disconnection of utility services. The procedures shall include a detailed description of the methods and equipment to be used for each operation, and the sequence of operation.

1.5 REPAIR OF DAMAGE
A. Any damage to existing street improvements, utility poles, building elements to remain, other existing utilities and facilities to remain, and private property, as caused by the Contractor's operations shall be repaired at the Contractor's expense to the satisfaction of the Engineer.

B. Damaged items shall be repaired or replaced with new materials as required to restore damaged items or surfaces to a condition equal to and matching that existing prior to damage or start of Work of this Contract.

1.6 PROTECTION OF EXISTING FACILITIES
A. Before beginning any cutting, trenching, demolition or abandonment Work, the Contractor shall carefully inspect the existing facilities to determine the extent of the Work. The Contractor shall take all necessary precautions to prevent damage to existing facilities which are to remain in place and in operation. The Contractor shall be responsible for any damages to existing facilities, which are caused by the operations of the Contractor. Damages to such facilities shall be repaired or replaced to existing condition at no additional cost to the City and to the satisfaction of the Engineer. The Contractor shall carefully coordinate the Work of this Section with all other Work and shall provide shoring, bracing, and supports, as required. The Contractor shall ensure that structural elements are not overloaded and shall be responsible for increasing structural supports or adding new supports as may be required as a result of any cutting, removal, or demolition Work performed under any part of this Contract. The Contractor shall remove all temporary protection when the Work is complete or when so authorized by the Engineer.

B. The Contractor shall carefully consider all bearing loads and capacities for placement of equipment and material.

PART 31 PRODUCTS (NOT USED)
PART 32 EXECUTION

1.1 DEMOLITION AND ABANDONMENT OF FACILITIES
A. Demolition shall be accomplished in accordance with applicable codes and regulations.

Blasting shall not be permitted.

B. Disposal of all materials shall be performed in compliance with all applicable local, state and federal codes, regulations, and requirements. Structures to be abandoned shall be cleaned prior to abandonment.

C. The Drawings used in this Contract to indicate demolition, abandonment and salvage are based on Record Drawings and the best available information on the existing facilities. The structures and utilities may differ slightly. Prior to the submittal of bids, the Contractor shall conduct a comprehensive survey of the facilities to verify the scope of Work, the extent of utilities, and the physical sequencing constraints.

D. The Contract Drawings define the minimum portion of the structures to be removed. Unless otherwise shown on the Drawings, the Contractor may make rough cuts or breaks that exceed the limits of demolition shown.

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E. All debris, materials, piping, and miscellaneous waste products from the demolition process shall be removed safely from the project site as soon as possible. They shall be disposed of in accordance with applicable federal, state, and local regulations. The Contractor is responsible for determining and complying with these regulations and shall bear all costs associated with disposal of these items.

F. All equipment, materials, and piping within the limits of the demolition shall become the property of the Contractor, unless noted otherwise on the Drawings, and shall be removed from the site.

G. No toxic or hazardous materials are anticipated for demolition or removal. If these or questionable substances are found during the demolition process, report the condition immediately to the Engineer in writing.

1.2 UTILITIES
A. The utilities on site are potable water, gas, sanitary sewer, communications, electricity and storm drains.

B. The Contractor shall be responsible for coordinating all utility service shut-downs with the City or City’s Representative before demolition is started.

C. Where utility lines that are abandoned or are designated for abandonment are exposed by demolition excavation or in conflict with new improvements, they shall be removed.

D. Piping to be slurry filled, plugged and abandoned shall be done so in accordance with City of Sebastopol Standards and these Contract Documents.

E. All utilities designated to remain in service shall remain in service for the duration of the work.

F. Salvage utility facilities for reuse where designated on the Drawings. Store in a safe and protected location until reinstalled. The Contractor shall be responsible for any damages to these facilities. Damages to such facilities shall be repaired or replaced with new at no additional cost to the City and to the satisfaction of the Engineer.

1.3 PAVING DEMOLITION
A. Asphalt concrete and armor coats shall be saw cut with a suitable tool before excavation. For all roads and paved areas, saw cutting shall be required. Breaking of asphalt, concrete, or armor coats with jack hammers or excavation equipment will not be permitted.

B. All edges of asphalt concrete or armor coats shall be cut four (4) inches vertically, with a neat, square edge.

C. In all cases, existing asphalt paving or armor coating shall be saw cut out after construction and just prior to final paving to a point twelve (12) inches or more wider than each side of the trench line. Saw cuts shall be parallel or perpendicular to centerline of the trench. Any strip of existing pavement with a width of four (4) feet or less shall be removed and replaced with new pavement.

D. The Contractor shall dispose of all Portland cement concrete and asphalt concrete generated from removal or demolition activities on the project at a recycler for these materials. The Contractor shall provide receipts verifying delivery and approximate quantity (TONS) of the material delivered to the material recycler.

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1.4 PROTECTED AREAS
A. The existing structures not designated for removal, along with its associated utilities and landscaping, shall remain in place, in service and accessible to employees. The Contractor shall exercise caution when working near these structures. Any damage to this building, surrounding landscaping, or paved areas shall be repaired or replaced to original pre-contract conditions at the Contractor’s sole expense. The Contractor is responsible for providing any temporary access as required for this facility.

B. All other areas of the site not within the limits of demolition and grading shown on the Drawings shall be left undisturbed. Any damage to these areas during the demolition or construction process shall be repaired or replaced to original pre-contract conditions at the Contractor’s sole expense. Disturbed areas, not within the demolition and grading limits shown on the Drawings, shall be reseeded.

1.5 BACKFILLING
A. The Contractor shall backfill all demolition areas to final grade with appropriate fill material as shown on the Drawings and described in these Specifications.

B. Backfill material shall meet the applicable requirements of Section 31 00 00, “Earthwork.” In all areas not immediately backfilled to ground level, the Contractor shall erect safety barriers around the excavation.

END OF SECTION
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SPECIFICATIONS
SECTION 03 30 00

CAST-IN-PLACE CONCRETE
PART 33 GENERAL

1.1 SUMMARY
A. Section Includes:

1. Cast-in-place concrete.

1.2 SYSTEM DESCRIPTION
A. This section includes requirements for cast-in-place concrete for valve boxes, monument boxes, and cast-in-place concrete for thrust blocks, curbs, gutters, and sidewalks.

1.3 SUBMITTALS
A. Submit all product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review.

B. Product Data: Indicate admixtures
C. Design Data: Submit mix designs

1.4 QUALITY ASSURANCE
A. Perform cast-in-place concrete work in accordance with ACI 301.

B. Sustainable Design Requirements:

1. Regional Materials: Furnish materials extracted, processed, and manufactured within 500 miles of Project site.

C. Perform Work in accordance with State of California standards.

D. Maintain one copy of each document on site.

PART 34 PRODUCTS

1.1 CONCRETE MATERIALS
A. Cement: ASTM C150, Type II Portland type.

B. Fine and Coarse Aggregates: ASTM C33.

C. Water: Clean and not detrimental to concrete.

D. Air Entrainment Admixture: ASTM C260.

E. Bonding Agent: Epoxy Type.

F. Non-shrink Grout: Premixed compound consisting of non-metallic aggregate, cement, water reducing and plasticizing agents.

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SPECIFICATIONS

1.2 COMPOUNDS, HARDENERS AND SEALERS
A. Curing Compound: ASTM C309, Type 1 Class B.

1.3 CONCRETE MIX
A. Mix and deliver concrete in accordance with ASTM C94/C94M, Option A.

B. Furnish concrete of the following strength:

1. Compressive strength 4,000 psi (28 day).

2. Slump 1 to 4 inches.

3. Maximum water-cement ratio: 0.48.

C. Select admixture proportions for normal weight concrete in accordance with ACI 301.

D. Add air entraining agent to concrete mix for concrete work exposed to exterior.

E. Concrete for curb, gutter and sidewalk to contain 1 pound lampblack per cubic yard.

PART 35 EXECUTION

1.1 PLACING CONCRETE
A. Prepare previously placed concrete by cleaning with steel brush and applying bonding agent.

B. Separate slabs-on-grade from vertical surfaces with ¼ inch thick joint filler, extended from bottom of slab to within ¼ inch of finished slab surface.

C. Place concrete continuously between predetermined expansion, control and construction joints.

1.2 FORM REMOVAL
A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads.

B. Remove formwork progressively and in accordance with code requirements.

1.3 CURING AND PROTECTION
A. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.

B. Immediately after placement, protect concrete from premature drying.

C. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete for not less than 7 days.

1.4 FIELD QUALITY CONTROL
A. Perform field inspection and testing in accordance with ACI 301.

B. Strength Test Samples:

1. Sample concrete and make one set of three cylinders for every 150 cu yds or less of each class of concrete placed each day and for every 5,000 sf of surface area for slabs and walls.

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C. Field Testing:

1. Measure slump and temperature for each compressive strength concrete sample.

2. Measure air content in air entrained concrete for each compressive strength concrete sample.

D. Cylinder Compressive Strength Testing:

1. Test Method: ASTM C39/C39M.

2. Test Acceptance: In accordance with ACI 301.

3. Test two cylinders at 28 days.

4. Retain one cylinder for testing when requested by Architect/Engineer.

5. Dispose remaining cylinders when testing is not required.

1.5 DEFECTIVE CONCRETE
A. Modify or replace concrete not conforming to required lines, details and elevations, as directed by Architect/Engineer.

END OF SECTION
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SPECIFICATIONS
SECTION 31 00 00

EARTHWORK
PART 36 GENERAL

1.1 DESCRIPTION
A. Earthwork shall consist of performing all operations necessary for excavation, subgrade preparation and grading where applicable.

B. Excavation and grading within the City of Sebastopol shall conform to this specification and the applicable provisions of City of Sebastopol Grading Ordinance.

C. All work shall conform to the lines, grades and cross-sections or elevations shown on the Drawings.

D. Prior to bid, Contractor shall verify existing topography and notify Engineer of any discrepancy between existing topographic information indicated on the plans and actual field topographic data. Failure to notify Engineer of any discrepancy prior to bid indicates Contractor acceptance of existing conditions in conformance with those shown on the Plans.

E. Groundwater may be present at varying depths. Seasonal fluctuations in the local groundwater table at the project site and vicinity are generally highest at the end of the winter rainy season and lowest at the end of the summer dry season. The Contractor should expect groundwater and soil moisture conditions within the project area to vary depending on seasonal rainfall and runoff conditions. Groundwater may be present close to the ground surface during prolonged wet winter weather. Groundwater will drop during dry summer and fall weather.

F. Existing power and telephone lines, trees, fences, pipelines or other conduits, embankments, and structures in the vicinity of the work that are to remain shall be supported and protected from injury by the Contractor during the construction and until the completion of the Work. The Contractor shall be liable for all damages to such structures, as herein provided, and shall save and keep the City and Engineer harmless from any liability or expense for injuries, damages, or repairs to same.

G. Excess material from the excavation shall become the property of the Contractor and shall be disposed of by him at his expense.

H. Related items described elsewhere:

1. Section 02 01 00 - Site Conditions

2. Section 02 01 10 - Existing Utilities and Underground Structures

3. Section 31 23 19 - Dewatering

4. Section 31 01 40 - Shoring and Trench Safety

5. Section 31 23 00 - Trench Excavation and Backfill

6. Section 32 12 16 – Hot Mix Asphalt Paving

1.2 QUALITY ASSURANCE
A. Qualifications of workmen: Provide sufficient skilled workmen and supervisors who shall be present at all times during execution of this portion of the work and who shall be thoroughly familiar with the type of construction involved and the materials and techniques specified.

B. Codes and Standards:

1. Wherever a test method is referenced in this Section it shall be made in accordance with the most current test methods in use by the California Department of Transportation Agenda Item Number 6
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(Caltrans) as listed in the State Standard Specifications, latest edition, or ASTM method as listed below at the City’s option:

TEST TEST METHOD
Particle-Size Analysis of Soils ASTM D422
Density of Soil in Place by Sand Cone Method ASTM D1556 Moisture-Density Relations of Soil & Soil Aggregates ASTM D1557 Unconfined Compressive Strength of Cohesive Soil ASTM D2166 Laboratory Determination of Water Content of Soil & Rock ASTM D2216 Classification of Soils for Engineering Purposes ASTM D2487 Resistance R-Value and Expansion Pressure of Compacted Soils ASTM D2844 Density of Soil and Soil-Aggregate in Place by Nuclear Methods ASTM D2922 Density of Soil in Place by the Drive-Cylinder Method ASTM D2937 Direct Shear Test of Soils Under Consolidated Drained Conditions ASTM D3080 Liquid Limit, Plastic Limit, & Plasticity Index of Soils ASTM D4318 Expansion Index of Soils ASTM D4829

2. Where reference is made to the State Standard Specifications, reference shall mean the State of California, Department of Transportation (Caltrans), Standard Specifications, 2018, excluding measurement and payment Sections.

1.3 TESTING
A. Relative compaction, moisture, and permeability tests will be made at locations determined by the Engineer. When tests indicate that the specified compaction has net been achieved, that portion of the Work shall be reworked until the required density, moisture, and permeability has been attained.

B. The Contractor shall be responsible for the sampling and testing costs associated with any failed test.

C. The Contractor shall be responsible for the sampling and testing costs associated with soil disposal requirements for soils that are not determined to be contaminated.

D. A minimum of 72 hours’ notice shall be given to the Engineer by the Contractor prior to commencing or recommencing any grading operation.

1.4 SUBMITTALS
A. Submit all product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review.

Incomplete submittals will not be reviewed.

B. Samples: In accordance with the provisions of Section 01 33 00, “Submittal Procedures,” of the specifications, submit samples of all materials 15 days prior to construction. Periodic testing of the material will also be made during construction.

C. Product Data: submit data for geotextile fabric indicating fabric properties, test methods, and manufacturer’s installation instructions.

D. Material Source: Submit name of imported fill materials supplied.

E. Manufacturer’s Certificate: Submit Certifications that products meet or exceed specified requirements.

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SPECIFICATIONS
PART 37 PRODUCTS

1.1 TOPSOIL AND UNDOCUMENTED FILL
A. Topsoil is classified as the top three inches of excavated material including buried organics, shallow vegetation roots and other deleterious materials and excluding cleared and grubbed materials.

B. Undocumented fill pertains to soils previously imported and placed at the project site.

1.2 GENERAL FILL MATERIAL
A. Shall be non-expansive and free of organic material, with a Liquid Limit less than 40 and a plasticity index less than or equal to 15 percent as determined by ASTM D4318, shall not contain clumps/rock larger than 3 inches, and should consist predominantly of materials less than 1/2 inch in greatest dimension.

B. Existing material excavated on site may be used as fill provided it meets the requirements of subparagraph 2.3.A, after vegetative matter, rocks larger than 3 inches, and other debris is removed and after approval by the Engineer.

C. All on-site and off-site sources of fill shall be approved by the Engineer a minimum of 2 working days prior to placement or importation to the site.

1.3 ENGINEERED FILL
A. Material specified in paragraph 2.2, except that potentially expansive soils shall not be used as engineered fill within the top 60 inches of subgrade beneath lightly loaded structures, concrete slabs and paving.

B. Standard Specifications, Section 26, Class 2, 3/4-inch maximum.

1.4 STRUCTURAL AGGREGATE
A. Structural aggregate material shall consist of washed angular aggregate with the following ASTM D422 test particle side distribution:

Sieve Size Percent Passing
3/4 Inch 100%
No. 4 0-5%
No. 200 0-3%

1.5 PIPE BEDDING MATERIAL
A. Pipe bedding material shall be as specified on City Standard Drawing No. R-1.4.

1.6 TRENCH BACKFILL MATERIAL
A. The following materials may be used as Trench Backfill Material:

1. Engineered Fill Material.

2. Standard Specifications, Section 26, Class 2, 3/4-inch maximum.

B. The following materials shall be used as Trench Backfill Material in roadway areas:

1. Standard Specifications, Section 26, Class 2, 3/4-inch maximum.

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SPECIFICATIONS

1.7 PERMEABLE MATERIAL
A. State Standard Specification Section 68.2.02F(3), Class 2.

1.8 AGGREGATE SUBBASE
A. Standard Specifications, Section 25, Class 2.

1.9 AGGREGATE BASE
A. Standard Specifications, Section 26, Class 2, 3/4-inch maximum.

1.10 SAND
A. Standard Specifications, Section 19-3.02E(2), Salt Free.

1.11 SLURRY CEMENT BACKFILL
A. Standard Specifications, Section 19-3.02D.

B. Materials for controlled low strength material shall be thoroughly machine-mixed in a pug mill, rotary drum, or other approved mixer. Mixing shall continue until the cementitious material and water are thoroughly dispersed throughout the material.

C. Slurry Cement Backfill shall be used as backfill only where shown on the Drawings or as directed by the Engineer.

D. When used as bedding around new electrical conduits the mix shall contain 1 sack of red dye per cubic yard.

1.12 SUBGRADE STABILIZATION FABRIC
A. Standard Specifications, Section 88-1.02O, Class B1.

1.13 FILTER FABRIC
A. Standard Specifications, Section 88-1.02B, Polypropylene, Class B.

PART 38 EXECUTION

1.1 GENERAL
A. Verify exact location (horizontal and vertical) of all utilities by potholing prior to the start of excavation.

B. All active portions of the construction site and material excavations shall be sufficiently watered to prevent excessive amounts of dust. Watering shall occur at least twice a day with complete coverage, preferably in the late morning and after work for the day.

C. All grading, earthmoving and excavation shall cease during periods of winds greater than 20 miles per hour average over a one hour period.

D. All material transported offsite shall be either sufficiently watered or securely covered to prevent excessive amounts of dust.

E. Areas disturbed by earthmoving or excavation activities shall be minimized at all times.

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SPECIFICATIONS

1.2 CLEARING AND GRUBBING
A. Clearing and grubbing shall conform to Section 31 11 00, “Site Clearing and Grubbing.”

1.3 TOPSOIL EXCAVATION
A. Remove all topsoil and organics.

B. Material specified in Paragraph 2.1 shall be removed before commencement of any excavation. Do not use this material for fill or backfill, except as approved by the Geotechnical Engineer. Topsoil shall be removed from the site at the Contractor’s expense or amended and reused as fill in landscaped areas.

1.4 DISPOSAL OF WASTE MATERIAL
A. Burning is prohibited. Remove unsuitable material from the site in accordance with all local laws, codes and ordinances.

B. Existing clean suitable fill material may be stockpiled at a designated location on site after approval by the Engineer.

1.5 COMPACTION EQUIPMENT
A. Compaction Equipment: All compaction shall be by mechanical means. Compaction equipment shall be of suitable type and adequate to obtain the densities specified and approved.

1.6 SITE EXCAVATION
A. Perform all excavation of every description, regardless of the type, nature, or condition of material encountered, as specified, shown, or required to accomplish the Work.

B. The Contractor shall control excavations and stockpiling in a manner to prevent water from entering the excavations. Material for fill, backfill, or for protection of excavations from surface drainage shall be neatly placed and kept shaped and covered so as to cause no dust or interference with other work.

C. The Geotechnical Engineer shall observe all excavated bottoms, including foundations and utility structures and trenches, following removal of material. Unsuitable materials observed by the Geotechnical Engineer in the excavated bottom shall be removed by the Contractor and stabilized using Engineered Fill material, as specified in Paragraph 2.3.

1.7 STRUCTURAL EXCAVATION
A. Excavation is unclassified. Excavate for structures to the lines and grades shown or as required to accomplish the Work. Perform all excavation regardless of the type, nature, or condition of the material encountered. Shore and brace (e.g., driven sheet piles, trench bracing) excavations as required. Protect adjacent utility facilities to remain. Remove all debris and sort material to be reused as Engineered Fill. The method of excavation used is optional; however, no heavy equipment shall be operated within 4 feet of existing structures or newly completed construction, except as approved. Excavation that cannot be accomplished without endangering existing or new structures shall be performed with hand tools. All benching, shoring and sloping of excavations shall be at the Contractor’s expense.

1.8 REMOVAL OF WATER
A. See Section 31 23 19 – Dewatering.

B. Water disposal shall meet Federal, State, and local requirements and as specified.

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SPECIFICATIONS

1.9 SUBGRADE STABILIZATION
A. Any base or soft areas shall be brought to the attention of the Geotechnical Engineer for evaluation of over-excavated depth and stabilized. If unsuitable materials are observed within the excavation bottom by the Geotechnical Engineer over-excavation will be required.

B. Areas receiving fill shall be prepared according to the following, unless noted otherwise on the Drawings:

1. Scarified to a depth of at least 6-inches.

2. Moisture conditioned to within 2 percent of optimum moisture content.

3. Compacted to at least 90 percent relative compaction.

1.10 OVER EXCAVATION
A. If groundwater or excessive soil moisture prevents operations described in 3.9.B, the bottom of the excavation may require overexcavation and a layer of aggregate base placed on the excavation bottom to provide a firm base on which to place and compact subsequent fill. The thickness of the aggregate base layer and/or need for subgrade stabilization fabric shall be evaluated by the Geotechnical Engineer at the time of excavation.

B. If the bottom of an excavation is found to consist of soft or unstable material that is incapable of properly supporting the pipe or structure, the Engineer shall be advised immediately in writing.

C. The Contractor shall obtain the Engineer’s approval prior to performing any overexcavation.

Any overexcavating and resultant backfill and compaction without such approval shall be at the Contractor’s expense. The quantity of approved unsuitable material excavated and its replacement shall be paid for as extra work only with the authorization of the Engineer and in accordance with the Contract Documents.

1.11 ROCK EXCAVATION
A. Rock excavation shall include removal and disposal of the following: (1) all boulders measuring 1/3 of a cubic yard or more in volume; (2) all rock material in ledges, bedding deposits, and unstratified masses; (3) concrete or masonry structures which have been abandoned; and (4) conglomerate deposits which are so firmly cemented that they possess the characteristics of solid rock.

B. Rock excavation is not anticipated for this project.

C. Explosives and Blasting: Use of Explosives and Blasting will not be permitted.

1.12 MOISTURE CONDITIONING
A. The term “moisture conditioning” as used in these Specifications, is defined to refer to any approved method of obtaining a required moisture content for materials to be compacted.

Included under moisture conditioning requirements shall be the furnishing of all required water and the furnishing of all other necessary labor, materials and equipment required to provide the approved or required percent of moisture content. Moisture conditioning, as required, shall be performed for all materials specified to be compacted regardless of whether or not such requirement is specifically stated. No separate payment will be made for any or all operations of the Contractor pertaining to moisture conditioning or from delays occasioned thereby.

B. Prior to and during compaction, all earthwork materials specified to be compacted, including but not limited to backfill, refill and foundation subgrade, shall have an approved moisture content which shall be uniform in each layer of material compacted. If the moisture content is less than the approved requirement, compaction operations shall not proceed until the Contractor has added the necessary amount of water. If the moisture content is greater than Agenda Item Number 6
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SPECIFICATIONS
the approved requirement, compaction operations shall not proceed until such time as the materials have dried sufficiently or have been otherwise mechanically dewatered or replaced with materials having the approved moisture content. The soil should be mixed after water is added to distribute the water evenly throughout the lift. Sufficient time should be allowed between water application and compaction to allow the water to penetrate the soil clods and reach a uniform value in the lift. If the soil is too moist, aeration will be required to lower moisture content to the desired level.

C. Contractor shall be responsible to demonstrate throughout the duration of all earthwork operations, that required moisture conditioning limits are being obtained. Care must be exercised to ensure that the moisture content is not above moisture requirements. This is to ensure that the structural stability of the material is not affected.

D. For general engineered fill construction, the following compaction requirements apply:

1. Maximum 8-inch lifts of uncompacted thickness.

2. Compact to a minimum 90% relative compaction at, or within, 2 percent of the ASTM D1557 optimum moisture content.

3. Within the upper 12 inches of subgrade, compact to a minimum 95% relative compaction at, or within, 2 percent of the ASTM D1557 optimum moisture content.

1.13 SITE GRADING
A. Perform all earthwork to the lines and grades as shown and/or established by the Engineer.

Shape, trim, and finish slopes to conform to the lines, grades, and cross sections as shown or approved. Make slopes free of all exposed roots and stones exceeding 3 inches in diameter which are loose and liable to fall. Round tops of banks to circular curves, in general, not less than a 6-foot radius. Rounded surfaces shall be neatly and smoothly trimmed.

B. Work that has been suspended by weather, scheduling or for any other reason, shall be protected against the effects of such weather or other conditions. Grading which has been considered acceptable, but which has been subsequently damaged shall be re-worked to meet the requirements of the Specifications.

C. Slopes shall be re-dressed as required to mitigate any erosion that may occur prior to establishment of the erosion control mitigation measures.

D. All grades shown on the Plans are expressed as finished elevations.

1.14 CUT SLOPES AND FILL SLOPES
A. Permanent cut and fill slopes shall be constructed no steeper than 3H:1V. Fill slopes shall be constructed beyond planned grades and trimmed back to expose form compacted soil.

B. Where fills are placed on existing slopes that exceed 5H:1V, the fills shall be keyed and beveled into the existing slope.

1.15 CONCRETE SLABS ON GRADE
A. Excavate to subgrade, scarify 6-inches and compact to at least 90% of the ASTM D1557 maximum dry density with a moisture content within 2 percent of the ASTM D1557 optimum moisture content.

B. Install structural aggregate layer to the thicknesses shown on the Drawings and compact to a minimum of 90 percent of the ASTM D1557 maximum dry density with a moisture content within 2 percent of the ASTM D1557 optimum moisture content.

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SPECIFICATIONS

1.16 HOT MIX ASPHALT PAVEMENT
A. Excavate to subgrade, scarify 12-inches and compact to at least 95% of the ASTM D1557 maximum dry density with a moisture content within 2 percent of the ASTM D1557 optimum moisture content.

B. Evaluate the stability of the compacted subgrade soil by wheel rolling prior to placing the overlaying aggregate base rock layer. Wheel rolling should be performed with a fully loaded water truck with tire pressures between 60 and 95 psi. The subgrade soil should exhibit only minor deflections as the wheel load passes by. Any unstable areas should be reworked and then retested for relative compaction and moisture content and then proof rolled again.

C. Place aggregate base in 6-inch loose lifts and compact each lift to at least 95% of the ASTM D1557 maximum dry density with a moisture content within 2 percent of the ASTM D1557 optimum moisture content.

1.17 CONTAMINATED SOILS HANDLING
A. Contaminated soils are not anticipated to be encountered during construction.

B. If contaminated soil is discovered during construction activities, notify the Engineer, City, and upon approval from the City, notify the Sebastopol Fire Department.

C. Contractor to maintain separate stockpiles for potentially contaminated soil such that potentially contaminated soil is not commingled with non-contaminated soil.

D. Contractor to prepare a 10-mil, polyethylene plastic sheeting lined containment area for stockpiling and covering of potentially contaminated soils. Overlap the plastic sheeting a minimum of two feet to prevent run off underneath the plastic sheeting.

E. Collect soil samples to fully characterize excavated soil for disposal and manage accordingly.

Sample, according to protocols set forth in ASTM E1903-97, Standard Guide for Environmental Site Assessments: Phase II Environmental Site Assessment Process, any soils generated as a result of excavations in these areas, as well as the bottoms and side walls of any such excavations.

F. Contractor to hire a California-certified laboratory to sample and test the potentially contaminated soil in accordance with sampling requirements of the nearest Class II or III landfill that accepts contaminated soils, or other type of disposal means preapproved by the City, as laboratory results indicate. In general, for gasoline and diesel contaminated soils, this includes the collection of one 4-point composite for every 100 cubic yards of excavated contaminated soil, and analysis for TPH-gas and TPH-diesel by EPA 8015, and for volatile organic compounds by EPA 8260.

G. Should the laboratory testing confirm the presence of contaminated soil, submit test results and any additional reporting requirements to the Class II or III landfill at least three working days prior to the planned disposal date.

H. Upon review of the test results, the Class II or III landfill will determine if the contaminated soil may be disposed of at the facility.

I. If the test results exceed the acceptance limits of the Class III landfill, Contractor shall submit test results and any additional reporting requirements to the nearest Class II landfill.

J. Upon review of the test results, the Class II landfill will determine if the contaminated soil may be disposed at the facility or if additional testing is required.

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K. If additional testing is necessary, Contractor shall hire a California-certified laboratory to sample and test the contaminated soil in accordance with the additional sampling requirements.

L. If characterization determines that wastes are hazardous under RCRA or CalEPA Hazardous Waste guidelines, treat and/or dispose of all contaminated soils at properly permitted facilities approved by the City and all other controlling regulatory agencies for such purposes.

M. Complete disposal facility applications as necessary to obtain preapproval for disposal of all contaminated soil.

1.18 ADDITIONAL EXCAVATION IF CONTAMINATION IS DISCOVERED A. If contaminated soil is discovered during construction activities, notify the Engineer or City, and upon approval from the City, notify the Sebastopol Fire Department.

B. Call upon an OSHA-certified, trained personnel, experienced in identifying unknown contaminants (such as a Professional Geologist or Registered Civil Engineer) to collect confirmation samples. Identify possible contaminated areas, and notify the Engineer or City. If warranted or directed by the Sebastopol Fire Department, Engineer, or City, perform additional remedial excavation of soil and collect confirmation soil samples.

C. In areas where additional remedial excavation is required, complete excavation and backfilling as requested by the Engineer, City, or trained personnel prior to continuing with project.

D. If additional soils are excavated, follow the same protocol for stockpiling, characterizing, reloading, and disposal as described in other sections of this specification.

E. This work will be completed as an extra scope, once total contaminated soil exceeds estimations for the project.

1.19 DISCOVERED CONTAMINATION NOT PREVIOUSLY KNOWN TO EXIST A. If contaminated soil is discovered where not expected and contaminants cannot be identified, call upon an OSHA-certified, trained personnel experienced in identifying unknown contaminants (such as a Professional Geologist/Engineer to collect samples and field identify possible contaminated areas.

1.20 WASTE MINIMIZATION
A. Minimize the generation of contaminated waste. Take all necessary precautions to avoid mixing clean and contaminated wastes.

1.21 CONTAMINATED MATERIAL STORAGE AREA MAINTENANCE
A. When contaminated materials are present and require stockpiling, complete the following tasks:

1. Stockpile Site Locations

2. Liner Maintenance: Maintain a stockpile area bottom to prevent tears or holes in the plastic. Any tears shall be patched or the area relined with 10-mil plastic within 24 hours.

Sweep clean roadways leading to stockpile areas and repair all surface damage caused by the stockpile traffic.

3. Dust Control: Control all dust that may arise during stockpiling activities by keeping roads swept or wet, as necessary.

4. Conduct: All activities will be conducted in a manner that minimizes litter, nuisances, dust, noise impacts, and mud.

5. Access: Unauthorized access will be prevented within potentially contaminated soil areas.

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6. Traffic Control: Traffic will be controlled in a safe manner.

7. Emergency Communications: The Contractor using the stockpile area shall provide telephone or radio communication capacity for emergency purposes.

8. Record Keeping: Maintain a log book in which storage dates, quantity of material accepted and leaving, and concentrations of constituents are tracked and any special occurrences such as written public complaints will be recorded.

9. Length of Use/Site Closure: When Contractor completes the use of the stockpile area, he shall ensure the area is clean of any potentially contaminated soils and have approval from City prior to leaving the site.

1.22 TRANSPORTATION OF CONTAMINATED SOIL
A. With preapproval from the City and the disposal facility, reload, transport, and dispose of contaminated materials in accordance with all local, state, and federal laws, rules, and regulations for transporting contaminated soil.

B. Contractor shall arrange the hauling and disposal of the contaminated soil at the accepted landfill licensed to accept such soil.

C. Transport all contaminated soil off site only to appropriate permitted Treatment and/or Disposal Facilities, approved by the City. The Contractor performing the work of this Section shall be licensed for the transportation and hauling of hazardous wastes. The firm shall provide a route plan, which clearly identifies the routes he proposes to follow while transporting soil to the offsite disposal facility.

D. Compliance with Federal Motor Carrier Safety Regulations: A motor carrier driver or other person must comply with the rules when he/she is transporting hazardous materials by a motor vehicle, which must be marked or placarded in accordance with DOT 177.823.

E. Transport drivers will offload soil only at the approved disposal facilities.

F. Ensure contaminated soil is free of debris, concrete, or asphalt rubble. Ensure no free water is ponding or leaking from trucks.

1.23 REPORT, MANIFESTS, AND RECORDS
A. Provide the Engineer or City with a compliance certificate verifying that all waste soils were received by the approved landfill has been properly disposed.

B. Provide copies of all manifests, permits, or other documents currently in effect relating to the specific wastes to be transported, treated, and disposed hereunder except as otherwise stated in this Section.

C. As the waste generator, the City shall furnish completed State of California Hazardous Waste Manifests (or the Uniform Manifest - 40 CFR Parts 260, 262, 271 - if effective at time of preparation) for all contaminated soils to be removed from the project area for transportation to an appropriate disposal facility. These manifests shall accompany the waste loads to disposal and be properly completed by the hauler and disposal agent as required by federal and state hazardous waste management law. The final manifest shall then be returned by registered mail to the City within the designated time period specified by federal law.

D. The contract work will not be considered complete nor will the City make final payment until the Engineer or City receives certifications of treatment and/or disposal.

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1.24 NON-CONTAMINATED SOIL REUSE
A. Soil containing very low levels of contamination may be considered for reuse as backfill, but must be cleared with the Sebastopol Fire Department and Engineer or City for reuse, prior to reuse.

B. Non-contaminated soil may be reused for backfill, if preapproved by the Engineer or City, and is permitted in other sections of the specifications.

1.25 DISPOSAL OF UNSUITABLE AND EXCESS EXCAVATED MATERIAL A. Disposal: Remove surplus satisfactory soil and waste material, including unsatisfactory soil, trash, and debris, and legally dispose of it off project site.

B. Location of disposal site and length of haul are the Contractor's responsibility.

C. Soil characterization testing required for hauling and off-site disposal or reuse of excess excavated material are the Contractor’s responsibility.

D. Place excess excavated materials suitable for fill and/or backfill on site where directed by Engineer.

E. Remove from site and dispose of any excess excavated materials after all fill and backfill operations have been completed.

F. Segregate all excavated contaminated soil designated by the Engineer from all other excavated soils, and stockpile on site on two 6 mil polyethylene sheets with a polyethylene cover. A designated area shall be selected for this purpose. Provide and maintain temporary erosion controls on and around soil stockpiles until they are removed from site. Dispose of excavated contaminated material in accordance with State and Local requirements.

1.26 CLEAN UP
A. Upon completion of earthwork operations, clean areas within contract limits, remove tools, and equipment. Provide site clear, clean, free of debris, and suitable for subsequent construction operations. Remove debris, rubbish, and excess material from the site.

END OF SECTION
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SECTION 31 01 40

SHORING AND TRENCH SAFETY
PART 39 GENERAL

1.1 SECTION INCLUDES
A. Shoring required for general safety, worker protection, and protection of adjacent property from the hazards of caving ground.

B. Shoring for trench excavations.

C. Shoring for structural excavations.

D. Contractor’s responsibilities.

E. Contractor’s trench safety plan.

F. Contractor’s supervisor.

G. Related requirements and Work described elsewhere includes:

1. Division 01 – Requirements for temporary facilities, controls, public safety, and convenience.

2. Division 02 – Existing Conditions.

3. Division 31 – Earthwork.

4. Division 33 – Utilities.

1.2 CONTRACTOR'S RESPONSIBILITIES FOR SAFETY
A. The Contractor shall be solely and completely responsible for conditions of the job site, including safety of all persons (including employees) and property during performance of the work. This requirement shall apply continuously and not be limited to normal working hours.

B. Safety provisions shall conform to U.S. Department of Labor (OSHA), the California Occupational Safety and Health Act, and all other applicable Federal, State, county, and local laws, ordinances, codes, the requirements set forth below, and any regulations that may be detailed in other parts of these Specifications.

C. Contractor is advised that Part 1926 of 29 CFR, subpart P, has been revised. This regulation governs excavations, trenching and protective systems, sloping, benching, wood, and aluminum shoring for various types of soils, and depths of excavations. The Contractor shall follow these regulations (including the latest revisions) for this project.

D. Where any of these are in conflict, the more stringent requirement shall be followed.

1.3 PERMIT
A. For trenches or excavations of depth five (5) feet or deeper, the Contractor shall obtain from the State Division of Industrial Safety a permit for such excavation; submit a copy of the permit to the Engineer, prior to initiating any work requiring said permit.

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1.4 CONTRACTOR SUBMITTALS
A. Submit all plans, product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review. Incomplete submittals will not be reviewed.

B. The Contractor’s attention is directed to the provisions for "Shoring and Bracing Drawings" in Section 6705 of the California Labor Code. The Contractor, prior to beginning any trench or structure excavation five (5) feet deep or greater, shall submit to the Engineer for review for compliance with Section 6705 the Contractor’s detailed 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. If such plan varies from the shoring system standards established in the Construction Safety Orders of the State of California, such alternative system plans shall be prepared, stamped and signed by a civil or structural engineer licensed in the State of California at the Contractor’s expense.

C. Certificates of Compliance: Certificates of Compliance shall be provided for all products and materials proposed to be used under this Section.

D. For all materials that are not pre-approved by the City the Contractor shall designate the source and/or submit samples of all materials in advance of their use for required testing and Engineer’s approval. All testing costs shall be at the Contractor’s expense.

1.5 SAFETY ORDERS
A. The Contractor shall have at the work site, copies or suitable extracts of the Construction Safety Orders of Cal-OSHA, and Part 1926 of 29 CFR, subpart P.

B. All work shall comply with the provisions of these and all other applicable laws, ordinances and regulations.

1.6 TRENCH SAFETY PLAN
A. For trenches and excavations five feet or more in depth, the Contractor shall submit to the Engineer a detailed plan, design of shoring, bracing, sloping, or other provisions to be made for worker protection from the hazards of caving ground.

B. If such plan varies from the shoring system standards established by the Construction Safety Orders, or Part 1926 of 29 CFR, Subpart P, the plan shall be prepared, sealed and signed by a civil or structural engineer registered in California. Signed and sealed copies of calculations necessary to quality the system shall also be submitted.

C. Nothing herein shall be deemed to allow the use of shoring, sloping, or protective system less effective than that required by the Construction Safety Orders of the Division of Industrial Safety, or Part 1926 of 29 CFR, subpart P.

D. If Contractor proposes to use trench jacks or speed shores, submittals shall show length and type of shoring vertical and horizontal spacing, vertical or horizontal wales and planks. Shields, when proposed or used, shall show depth allowed in the soils expected to be encountered.

1.7 ENGINEER'S REVIEW
A. The duty of the Engineer to conduct construction review of the Contractor's performance is not intended to include a review or approval of the adequacy of the Contractor's safety supervisor, the safety program, or any safety measures taken in, on, or near the construction site.

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B. The Engineer will review the submittal of the Contractor's proposed shoring system to verify the general scope of the Work, to determine that qualified professional engineering services are used and to determine that appropriate construction techniques are proposed for use. This review shall not in any way be construed to relieve the Contractor from sole responsibility for the design and safety of such shoring.

1.8 CONTRACTOR'S SUPERVISOR
A. The Contractor shall appoint a qualified supervisory employee who shall be responsible to determine the sloping or shoring system which shall be used depending on local soil type, water table, stratification, depth, etc.

PART 40 PRODUCTS (NOT USED)
PART 41 EXECUTION (NOT USED)

END OF SECTION

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SECTION 31 23 00

TRENCH EXCAVATION AND BACKFILL
PART 42 GENERAL

1.1 SUMMARY
A. Section includes: The Work covered in this section consists of performing all operations necessary to excavate all earth, regardless of character and subsurface conditions, from the trench or adjacent thereto and to place stabilization, bedding, cover, water removal, backfill, base, and compaction as shown on the Drawings and as specified, or as may be ordered by the Engineer.

B. Such earthwork shall include, but may not necessarily 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 necessarily be limited to, the furnishing, placing, and removing of sheeting, shoring and bracing necessary to safely support the sides of all excavations; all pumping, ditching, draining and other required measures for the removal or exclusion of water from the excavation; the supporting of structures above and below the ground; all backfilling around structures and all backfilling of trenches and pits; the disposal of excess excavated materials; borrow of materials to make up deficiencies for fills; and all other incidental earthwork.

C. General intent:

1. It is the general intent of these specifications to specify conduct of the Work in such manner as to cause no exposure to unsafe conditions during construction and to provide a trench that will properly support and protect the pipe and only minor settlement in areas where such settlement will not be noticed, or compensation made for any expected settlement. The degree of compaction and type of material will vary in accordance with type of pipe, and soil and surface conditions.

2. The Contractor shall obtain compaction and install base and temporary paving. He shall keep access roads clean and free of dust, mud or debris by providing cleanup as necessary.

3. If the Contractor does not properly clean up, (to preconstruction conditions) the City shall have the option of using outside equipment and labor to perform the Work and such costs will be deducted from the contract.

4. Stabilization material will be required only where soil conditions warrant and as directed by the Engineer.

5. No backfilling shall be done until the installation to be covered has been inspected and approved for covering. Compaction of backfill shall proceed immediately after backfilling, in appropriate layers.

6. During construction, heavy rains may be encountered causing wet backfill and other unsuitable working conditions. During these periods the City will have authority to shut down the Work to avoid poor working conditions, wet unsuitable backfill, damage to base and paving, unsafe conditions, etc.

D. Contaminated soil and groundwater shall be handled in accordance with Section 31 00 00, “Earthwork,” and all regulatory agency requirements.

E. Related Work:

1. Section 02 01 10 - Existing Utilities and Underground Structures

2. Section 31 00 00 - Earthwork

3. Section 31 01 40 - Shoring and Trench Safety

4. Section 33 11 00 - Water Utilities
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1.2 QUALITY ASSURANCE
A. Qualifications of workmen: Provide sufficient skilled workmen and supervisors who shall be present at all times during execution of this portion of the Work and who shall be thoroughly familiar with the type of construction involved and the materials and techniques specified.

B. Codes and standards:

C. Wherever a test method is referenced in this section it shall be made in accordance with the most current test methods in use by the California Department of Transportation (Caltrans).

D. Where reference is made to the State Standard Specifications, reference shall mean: State of California, Business and Transportation Agency, Department of Transportation (Caltrans), Standard Specifications, 2018, excluding measurement and payment Sections.

1.3 GUARANTEES
A. The Contractor shall guarantee his Work against settlement for a period of one year after the Notice of Completion has been filed and shall repair all damage caused by settlement within that time. For the purpose of this specification, settlement will be deemed to have occurred if the following conditions exist:

1. Along unpaved portions, a depression of 1 inch below the average of the sides of the uncut portion shall be deemed a settlement.

2. In paved areas, the depression of 1/4 inch below the average of the sides of the uncut portion will be deemed a settlement.

1.4 CONTRACTOR SUBMITTALS
A. Submit all product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review.

Incomplete submittals will not be reviewed.

B. The Contractor’s attention is directed to the provisions for "Shoring and Bracing Drawings" in Section 6705 of the California Labor Code. The Contractor, prior to beginning any trench or structure excavation five (5) feet deep or over, shall submit to the Engineer for review for compliance with Section 6705 the Contractor’s detailed 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. If such plan varies from the shoring system standards established in the Construction Safety Orders of the State of California, such alternative system plans shall be prepared, stamped and signed by a civil or structural engineer licensed in the State of California at the Contractor’s expense.

C. Certificates of Compliance: Certificates of Compliance shall be provided for all products and materials proposed to be used under this Section.

D. For all materials, the Contractor shall designate the source and/or submit samples of all materials in advance of their use for required testing and Engineer’s approval, if requested. All testing costs shall be at the City’s expense.

1.5 QUALITY ASSURANCE
A. General: All soils testing will be performed by the City.

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 the standards outlined ASTM D1557. Field density in-place tests will be performed by the City.

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C. The Contractor shall notify the Engineer at least 2 working days prior to performing any utility excavation.

PART 43 PRODUCTS

1.1 EXCAVATION
A. The Contractor shall complete all excavation regardless of type, nature, or condition of the material encountered. The Contractor shall make his own estimate of the kind and extent of the various materials to be excavated in order to accomplish the Work. The Contractor should refer to the available Geotechnical Engineering Investigation report (soils report) for anticipated excavation conditions. Native backfill shall not be used for any utility trench backfill, unless noted otherwise on the Drawings.

1.2 BEDDING AND COVER MATERIAL
A. Pipe Bedding Material: Section 31 00 00, “Earthwork.”

1.3 TRENCH BACKFILL
A. Trench Backfill Material: Section 31 00 00, “Earthwork.”

1.4 PERMEABLE MATERIAL
A. Permeable Material: Section 31 00 00, "Earthwork."
B. Permeable material shall be used in over-excavated areas of trenches, including where the bottom of excavations is unstable, disturbed or wet.

1.5 GEOTEXTILE FABRICS
A. Filter Fabric: Section 31 00 00, "Earthwork."
B. Subgrade Stabilization Fabric: Section 31 00 00, "Earthwork."

1.6 SLURRY CEMENT BACKFILL
A. Slurry Cement Backfill: Section 31 00 00, "Earthwork."

1.7 STEEL PLATE
A. When steel plate bridging is provided in lieu of backfill and temporary asphalt, it shall be skid resistant and conform to Section 602.1 of the Caltrans Encroachment Permit Manual, with the following minimum thicknesses:

Trench Width Minimum Plate Thickness
(10”) 0.25 m (1/2”) 13 mm
(1’ – 11”) 0.58 m (3/4”) 19 mm
(2’ – 7”) 0.80 m (7/8”) 22 mm
(3’ – 5”) 1.04 m (1”) 25 mm
(5’ – 3”) 1.60 m (1 ¼”) 32 mm
B. For spans greater than 5 feet-3 inches, a structural design shall be prepared by a California registered civil engineer. Plates to be coated with a “no slip” surface.

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PART 44 EXECUTION

1.1 GENERAL
A. The Contractor shall perform all excavation of whatever substance is encountered to the lines and grades shown on the plans. All excavated materials shall become the property of the Contractor and disposed of in accordance with local and state requirements.

B. Not more than 150 feet of excavation trench will remain un-backfilled at the end of each day’s work. The maximum amount of open trench permitted in any one location shall be the length necessary to accommodate the amount of pipe installed and backfilled in a single day. 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. The above requirements for backfilling or use of steel plate may be waived in cases where the trench is located further than 100 feet from any traveled roadway or occupied structure. In such cases, however, barricades and warning lights meeting safety requirements shall be provided and maintained. All operations shall be carried out in an orderly fashion. Backfilling, compacting, base, and cleanup will be accomplished as sections of the pipe are installed.

C. Where abandoned underground structures are encountered, remove to sufficient depth to allow underground lines to cross, backfill and compact during rough grading. The Engineer may require further work to be done if visual inspection indicates during construction.

1.2 WIDTH OF TRENCH
A. Except where otherwise specifically noted or directed, excavation for pipelines and utilities shall be open-cut trenches, sides of trenches shall be vertical, shored as required, and shall be uniform width from top to bottom. Trenches shall be of a width as shown on the Drawings.

B. If trench widths exceed those shown on the Drawings, install all additional stabilization material, special bedding and cover, backfill, base and paving or higher strength pipe in conformance with these specifications and as directed by the Engineer at no additional cost to the City.

C. Subgrade: The surface of the subgrade after compaction shall be hard, uniform, smooth, self draining, and true to grade and cross section.

D. Trench Bottom: The pipe bedding shall be given a final trim establishing grade such that each pipe section when first laid will be continually in contact with the bedding along the extreme bottom of the pipe. Rounding out the trench bottom or bedding to form a cradle for the pipe will not be allowed. The Contractor shall hand excavate for bell holes and fittings.

1.3 PAVING REMOVAL
A. Pavement removed for trenching shall be recycled at an approved facility.

1.4 REMOVAL OF WATER
A. Dewatering: Section 31 23 19 - Dewatering
B. Water disposal shall meet federal, state, and local requirements and as specified.

1.5 SHORING, SHEETING AND BRACING
A. See Section 31 01 40 - Shoring and Trench Safety. The Contractor shall furnish and install all shoring, sheeting and bracing required to support adjacent earth banks and structures for the protection and safety of all personnel working in the trench. All shoring, sheeting and bracing Agenda Item Number 6
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shall conform to the requirements of the State or local agents having jurisdiction over such matters. Remove shoring, sheeting and bracing in a manner that will protect the workman and prevent caving of banks and damage to the pipe, grade, sidewall support, bedding compaction, excavation, backfill or adjacent property.

1.6 OVEREXCAVATION
A. If the bottom of an excavation is found to consist of soft or unstable material that is incapable of properly supporting the pipe or structure, the Engineer shall be advised immediately.

B. The Contractor shall obtain the Engineer’s approval prior to performing any overexcavation.

Any over excavating and resultant backfill and compaction without such approval shall be at the Contractor’s expense. The quantity of approved unsuitable material excavated and its replacement shall be paid for as extra work only with the authorization of the Engineer and in accordance with the Contract Documents.

1.7 ROCK EXCAVATION
A. Rock excavation shall include removal and disposal of the following: (1) all boulders measuring 1/3 of a cubic yard or more in volume; (2) all rock material in ledges, bedding deposits, and unstratified masses; (3) concrete or masonry structures which have been abandoned; and (4) conglomerate deposits which are so firmly cemented that they possess the characteristics of solid rock.

B. The Contractor shall obtain the Engineer’s approval prior to performing any rock excavation.

Any rock excavation and resultant backfill and compaction without such approval shall be at the Contractor’s expense. The quantity of approved rock excavated and its replacement with suitable fill material shall be paid for as extra work only with the authorization of the Engineer and in accordance with the Contract Documents.

C. Rock excavation is not anticipated for this project. If the Contractor encounters rocks during earthwork activities, the Engineer shall be advised immediately.

D. Explosives and Blasting: Use of Explosives and Blasting will not be permitted.

1.8 TRENCH BACKFILL IN THE PIPE ZONE
A. The Contractor shall backfill the pipe zone with the bedding and cover materials specified to the dimensions shown on the Drawings. The trench shall be final-graded by hand to provide a secure bedding full length with hand excavation made for bells or collars.

B. Trench backfill in the pipe zone shall be moisture conditioned to within 2 percent of the ASTM D1557 optimum moisture content and compacted to achieve a minimum relative compaction of 90 percent of the ASTM D1557 maximum dry density, unless noted otherwise on the Drawings.

C. Additional backfill shall then be installed and the sides of the pipes moisture conditioned to within 2 percent of the ASTM D1557 optimum moisture content. Backfill on the sides of the pipe shall be shovel sliced to remove voids and tamped to not less than 90 percent compaction to secure full-length bedding and proper pipe wall support. After this, cover material shall be added and mechanically compacted to a relative compaction not less than 90 percent.

1.9 TRENCH BACKFILL IN THE TRENCH ZONE
A. The Contractor shall backfill the trench zone with the trench cover materials specified to the dimensions shown on the Drawings. The trench shall be final-graded by hand to provide a secure bedding full length with hand excavation made for bells or collars.

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B. Trench backfill in the trench zone shall be moisture conditioned to within 2 percent of the ASTM D1557 optimum moisture content, placed in maximum 8 inch thick loose lifts prior to compacting, and compacted to achieve a minimum relative compaction of 90 percent of the ASTM D1557 maximum dry density.

C. Trench backfill within 12 inches of subgrade in non-vehicular areas shall be moisture conditioned to within 2 percent of the ASTM D1557 optimum moisture content, placed in maximum 6 inch thick loose lifts prior to compacting, and compacted to achieve a minimum relative compaction of 95 percent of the ASTM D1557 maximum dry density.

D. Trench backfill within 12 inches of subgrade in vehicular areas shall be moisture conditioned to within 2 percent of the ASTM D1557 optimum moisture content, placed in maximum 6 inch thick loose lifts prior to compacting, and compacted to achieve a minimum relative compaction of 95 percent of the ASTM D1557 maximum dry density.

1.10 PLACING AND SPREADING OF BACKFILL MATERIALS
A. Backfill shall not be dropped directly upon any structure or pipe. Backfill shall not be placed around nor upon any structure for a minimum of 72 hours or until the concrete has attained sufficient design strength to withstand the loads imposed, whichever is greater.

B. Backfill materials shall be placed and spread evenly in horizontal layers.

C. During spreading each layer shall be thoroughly mixed as necessary to promote uniformity of material in each layer and uniformity of moisture throughout backfill materials. Pipe Zone backfill materials shall be manually spread around the pipe so that when compacted, the Pipe Zone backfill will provide uniform bearing and side support.

D. Where the backfill material moisture content is below the optimum moisture content water shall be added before or during spreading until the proper moisture content is achieved.

E. Where the backfill material moisture content is too high to permit the specified degree of compaction, the material shall be dried or replaced until the moisture content is satisfactory.

F. Backfill shall be mechanically compacted by means of tamping rollers, sheepsfoot rollers, pneumatic tire roller, vibrating rollers, or other mechanical tampers. All such equipment shall be of a size and type subject to review by the Engineer. Impact-type pavement breakers (stompers) will not be permitted. Permission to use specific compaction equipment shall not be construed as guaranteeing or implying that the use of such equipment will not result in damage to adjacent ground, existing improvements, or new improvements. The Contractor shall make its own determination in this regard.

G. Material for mechanically compacted backfill shall be placed in lifts which, prior to compaction, shall not exceed the thickness specified below for various types of equipment:

1. Vibratory equipment, including vibratory plates, vibratory smooth-wheel rollers, and vibratory pneumatic-tired rollers - maximum lift thickness of 1 foot.

2. Rolling equipment, including sheepsfoot (both vibratory and non-vibratory), grid, smooth-wheel (non-vibratory), pneumatic-tired (non-vibratory), and segmented wheels - maximum lift thickness of 1 foot.

3. Hand-directed mechanical tampers-maximum lift thickness of 4 inches.

H. Mechanically compacted landfill shall be placed in horizontal layers of thickness not exceeding those specified above, compatible to the material being placed and the type of equipment being used. Each layer shall be evenly spread, moistened or dried, if necessary, and then tamped or rolled until the specified relative compaction has been attained.

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1.11 COMPACTION OF BACKFILL MATERIALS
A. Specification Section 31 00 00 - Earthwork. Each layer of backfill material as defined herein, shall be mechanically compacted to the specified percentage of maximum density. Equipment that is consistently capable of achieving the required degree of compaction shall be used and each layer shall be compacted over its entire area while the material is at the required moisture content range.

B. Flooding, ponding, or jetting shall not be used.

C. Equipment weighing more than 10,000 pounds shall not be used closer to structure walls than a horizontal distance equal to the depth of the fill against the structure wall at that time or 5- feet, whichever is greater. Hand operated power compaction equipment shall be used where use of heavier equipment is impractical or restricted due to weight limitations.

D. Trench Backfill Requirements: The pipe class has been structurally designed based upon the trench configuration specified herein.

1. The Contractor shall maintain the specified trench width up to a horizontal plane lying 12 inches above the top of the pipe.

2. If, at any location under said horizontal plane, the Contractor slopes the trench walls or exceeds the maximum trench widths indicated the Pipe Zone backfill shall be "improved" or the pipe class improved at no additional cost to the City. "Improved" backfill shall mean Slurry Cement Backfill or other equivalent materials acceptable to the Engineer.

3. All trenches shall have a minimum of 2 inches of temporary asphalt placed daily and maintained unless final paving can be completed in the same day. Temporary asphalt shall be placed flush with adjacent pavement grade.

4. Steel plates may be used to cover open trenches in-lieu of backfill and temporary asphalt pavement.

1.12 COMMUNICATIONS/ELECTRICAL
A. Bed and backfill in accordance with the Drawings.

1.13 STEEL PLATE
A. General: When backfilling operations of an excavation in the traveled way, whether transverse or longitudinal, cannot be properly completed within a work day, steel plate bridging with a non-skid surface and shoring may be required to preserve unobstructed traffic flow.

B. Steel plate bridging and shoring shall be installed using either Method (1) or (2):

1. Method 1 for speeds more than 45 mph:

2. The pavement shall be cold planed to a depth equal of the thickness of the plate and to a width and length equal to the dimensions of the plate.

3. Method 2 for speeds 45 mph or less:
a. Approaching plate(s) and ending plate (if longitudinal placement) shall be attached to the roadway by a minimum of 2 dowels pre-drilled into the corners of the plate and drilled 2 inches into the pavement. Subsequent plates are butted to each other. Fine graded asphalt concrete shall be compacted to form ramps, maximum slope 8.5 percent with a minimum 12 inch taper to cover all edges of the steel plates. When steel plates are removed, the dowel holes in the pavement shall be backfilled with either graded fines of asphalt concrete mix, concrete slurry or an equivalent slurry.

C. When steel plate bridging is required, the following conditions shall apply:

1. Steel plates used for bridging must extend a minimum of 12 inches beyond the edges of the trench.

2. Steel plate bridging shall be installed to operate with minimum noise.

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3. The trench shall be adequately shored to support the bridging and traffic loads.

4. Temporary paving with cold asphalt concrete shall be used to feather the edges of the plates, if plate installation by Method (2) is used.

5. Bridging shall be secured against displacement by using adjustable cleats, shims or other devices.

D. Steel plate bridging and shoring shall be installed using either Method (1) or (2):

1. Method 1 for speeds more than 45 mph:
a. The pavement shall be cold planed to a depth equal of the thickness of the plate and to a width and length equal to the dimensions of the plate.

2. Method 2 for speeds 45 mph or less:
a. Approaching plate(s) and ending plate (if longitudinal placement) shall be attached to the roadway by a minimum of 2 dowels pre-drilled into the corners of the plate and drilled 2 inches into the pavement. Subsequent plates are butted to each other. Fine graded asphalt concrete shall be compacted to form ramps, maximum slope 8.5 percent with a minimum 12 inch taper to cover all edges of the steel plates. When steel plates are removed, the dowel holes in the pavement shall be backfilled with either graded fines of asphalt concrete mix, concrete slurry or an equivalent slurry.

E. Steel plate bridging should not exceed 4 consecutive working days in any given week.

1.14 TESTING
A. Relative compaction shall be to the densities specified and referenced herein. All testing will be performed by the City.

END OF SECTION
Agenda Item Number 6
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SECTION 31 23 19

DEWATERING
7 GENERAL
1 DESCRIPTION
a Groundwater is anticipated in this project. The Contractor is advised that groundwater may be present in some of the proposed excavations, depending on site location, depth of excavation, soil conditions and time of year. As necessary, the Contractor shall keep excavations free from water during construction.
b The Contractor shall provide all labor, materials, and equipment necessary to dewater trench and structure excavations, in accordance with the requirements of the Contract Documents, to enable the pipes and structures to be installed in excavations that are free from standing or flowing water that may be due to groundwater, surface water, stormwater or precipitation. c The preferred disposal method for water removed from trenches and other excavations is through discharge to the sanitary sewer.
d If required, the Contractor shall obtain a waste discharge permit from the City of Sebastopol for the discharge of dewatered groundwater to the sanitary sewer system. e The Contractor shall be responsible for all permits and fees associated with such discharges. f The preferred discharge location for dewatered groundwater is the City of Sebastopol’s wastewater collection system, as described in paragraph 1.4 of this Section. g The Contractor shall develop an excavation dewatering plan in accordance with paragraph 1.5.A of this Section.
h The Contractor shall qualitatively monitor for odor or visual discrepancies indicative of hydrocarbon contamination in groundwater during dewatering operations. The Contractor shall notify the Owner immediately if potential contamination is encountered.
i The Contractor’s dewatering operations shall not interfere with vehicle or pedestrian traffic. Under no circumstances shall dewatering water be allowed to flood streets and cause hazardous conditions for vehicular 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 Owner.
j The Contractor shall obtain any and all permits required in conjunction with dewatering operations, including permits for construction of dewatering wells. 2 RELATED WORK SPECIFIED ELSEWHERE
a Section 02 01 00 – Site Conditions
b Section 31 01 40 – Shoring and Trench Safety
c Section 31 23 00 – Trench Excavation and Backfill
3 DEFINITIONS
a Dewatering: Practices that manage the discharge of groundwater and accumulated precipitation from a work location so that construction work may be accomplished.

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4 DISCHARGE TO COLLECTION SYSTEM
a No water shall be discharged into sanitary sewers without the prior written consent of the Engineer and 24 hours advance notice to the City of Sebastopol.
b Groundwater turbidity may not exceed 10 NTU for discharging into the City’s wastewater collection system.
c If the turbidity requirements above are not met by tank settling alone, a filter must be employed to remove soil particles from the groundwater prior to discharge. d Testing of water samples for turbidity shall be performed and documented daily for the first week, then at weekly intervals during the remaining period of discharge. Water shall only be discharged if the sample test results meet the specified turbidity requirements. A log of the monitoring and sampling results shall be maintained.
e The Contractor shall coordinate groundwater discharge into the collection system with the Owner, including verifying water quality requirements, discharge flow limitations into the collection system, and location of discharges into the collection system. Discharged flows into the collection system shall be limited to 100 gpm.
f In no case shall the Contractor’s groundwater disposal operation surcharge the collection system (i.e., full pipe flow).
g The costs associated with any damage caused as a result of Contractor’s groundwater disposal operation surcharging the collection system shall be the Contractor’s sole responsibility. 5 SUBMITTALS
a Submit all plans, product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review. Incomplete submittals will not be reviewed. b Dewatering Plan
i Dewatering systems shall be designed and maintained by the Contractor and shall be coordinated with the design of shoring specified in Section 31 01 40, “Shoring and Trench Safety.” The plans should contain at a minimum the sizes of pumps, tanks, filtration devices, and the points of disposal. The plan should also include alternate (contingent) systems, and the Contractor should be prepared to alter the initial dewatering or shoring systems to meet the specified requirements.
ii The plan shall also include the water quality requirements specified herein. c Section 01 33 00 – Submittal Procedures
d Product Data: Submit data for each of the following:
i Dewatering Pumps: Indicate sizes, capacities, priming methods, and engine or motor characteristics.
ii Pumping equipment for control of discharge.
iii Size of tank(s) used for storage.
iv Specifications and size and type of filters and any other materials used for filtration. 6 CLOSEOUT SUBMITTALS
a Section 01 33 00 – Submittals
b Once the storage tank(s) are no longer needed, clean and remove from the site and return the area to original condition.

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7 PRE-INSTALLATION MEETINGS
a Section 01 30 00 – Administrative Requirements: Pre-installation meeting. b Convene minimum one week prior to commencing work of this Section. 8 SEQUENCING
a Section 01 10 00 – Summary: Requirements for sequencing. 9 COORDINATION
a Coordinate work to permit the following construction operations to be completed on stable substrate.
i Excavation for structures and pipelines as specified in Section 31 23 00 “Trench Excavation and Backfill.”
b Coordinate with the Engineer prior to the commencement of any soil excavation and groundwater discharge.
c All dewatering operations shall be adequate to assure the integrity of the finished project. 8 PRODUCTS
1 DEWATERING EQUIPMENT
a Select dewatering equipment to meet specified performance requirements. 9 EXECUTION
1 DEWATERING OPERATIONS
a Install dewatering system in accordance with the approved Dewatering Plan. i Secure City approved areas for siting of groundwater storage tanks and treatment systems.

Located system components to allow continuous dewatering operations without interfering with the excavation work.
ii Install the dewatering system in accordance with State, local and Unified Building Code standards.
b Remove water from the excavation in accordance with the approved Dewatering Plan. i Keep excavations free from water during construction. ii Treat all water from the dewatering operations as required for removal of sediment prior to discharge. Water discharged to the City’s collection system shall be within acceptable limits. iii Draw down the static water level a minimum of 2 feet below the bottom of excavations to maintain the undisturbed state of natural soils and allow the placement of any fill to the specified density.
iv Operate dewatering systems continuously until backfill has been completed to 1-foot above the normal static groundwater level.
v Control the release of groundwater to its static level to prevent disturbance of the natural foundation soils or compacted fill and to prevent floatation or movement of structures and pipelines.
vi Control groundwater to prevent softening of the bottom of excavations, or formation of “quick” conditions. Dewatering systems shall not remove natural soils. vii At all times, site grading shall promote drainage away from excavations. Surface runoff shall be diverted from excavations.
viii Dewatering in such a manner as to preserve the undisturbed bearing capacity of the subgrade soils at proposed bottom of excavation.
ix Control surface runoff to prevent entry or collection of water in excavations.

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c Notify the Engineer and stop excavation work should the dewatering system not adequately control water within the excavation.
i Supplement or modify dewatering system and provide other remedial measures to control water within excavation.
ii Demonstrate dewatering system operation complies with performance requirements before resuming excavation operations.
d Notify the Engineer and stop excavation work if potentially contaminated groundwater is encountered.
i Upon notification from the Contractor regarding potential groundwater contamination, the City will sample and analyze to verify the existence and extent of contamination. e Notify the Engineer and stop excavation work if settlement or ground movement is detected. i Contractor shall control the rate and effect of the dewatering in such a manner as to avoid all settlement and subsidence.
ii Where critical structures or facilities exist immediately adjacent to areas of proposed dewatering, reference points shall be established and observed at daily intervals to detect any settlement or ground movement that may develop. The Contractor shall conduct the dewatering operation in a manner that protects adjacent structures and facilities. The cost of repairing any damage to adjacent structures and restoration of facilities shall be the responsibility of the Contractor.
f Maintain all equipment in an operable state.
i Inspect equipment daily and repair or replace as needed. ii Clean accumulated sediment from tanks as needed.
g Remove dewatering systems after dewatering operations are discontinued. i The Contractor shall be responsible for sampling and disposal of sediments collected in storage tanks, as well as other waste materials related to groundwater discharge. ii Repair damage caused by dewatering systems or resulting from failure of systems to protect property.

END OF SECTION
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SPECIFICATIONS
SECTION 31 25 00

EROSION CONTROL
10 GENERAL
1 REFERENCES
a The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only. i AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
1 ASTM D 4439-14 Standard Terminology for Geosynthetics 2 ASTM D 4491-14 Water Permeability of Geotextiles by Permittivity 3 ASTM D 4533-11 Trapezoid Tearing Strength of Geotextiles 4 ASTM D 4632-13 Grab Breaking Load and Elongation of Geotextiles 5 ASTM D 4751-12 Determining Apparent Opening Size of a Geotextile 6 ASTM D 4873-09 Identification, Storage, and Handling of Geosynthetic Rolls b California Department of Transportation, Standard Specifications, Section 13 Water Pollution Control.
c Field Guide for Construction Site Dewatering.
d Storm Water Pollution Prevention Plan (SWPPP) and Water Pollution Control Program (WPCP) Preparation Manual (October 2016).
e Construction Site Best Management Practices (BMP) Manual. f Construction Site Monitoring Program (CSMP) Guidance Manual. g Manuals and templates are available at Caltrans Division of Construction website:
http://www.dot.ca.gov/hq/construc/stormwater/.
2 GENERAL
a A Storm Water Pollution Prevention Plan (SWPPP) document is not required for this project. b The Contractor shall prepare a Water Pollution Control Plan (WPCP) for review and approval by the Engineer, and implement water pollution prevention measures outlined in the approved WPCP, specified in this specification section, in Standard Specification Section 13, and the requirements of the National Pollution Discharge Elimination System (NPDES). c The Contractor shall become fully informed of, and comply with the applicable Federal, State and local regulations that govern the Contractor's operations and storm water discharges from both the project site and areas of disturbance outside the project limits during construction. d Unless arrangements for disturbance of areas outside the project limits are made by the District and made part of the contract, it is expressly agreed that the District assumes no responsibility to the Contractor or property owner whatsoever with respect to any arrangements made between the Contractor and property owner to allow disturbance of areas outside the project limits.
e The Contractor shall be responsible for the costs and for any liability imposed by law as a result of the Contractor’s failure to comply with the requirements set forth in this section including, but not limited to, compliance with the applicable provisions of Federal, State and local regulations.

For the purposes of this paragraph, costs and liabilities include but are not limited to fines, Agenda Item Number 6
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penalties and damages whether assessed against the State or the Contractor, including those levied under the Federal Clean Water Act and the State Porter Cologne Water Quality Act. f Conformance with the requirements of this section "Erosion Control," shall not relieve the Contractor from the Contractor's responsibilities, as provided in Section 5-1.36, "Property and Facility Preservation," Section 7-1.05, "Indemnification," and Section 7-1.06, “Insurance,” of the Standard Specifications.
g Earthwork construction activities shall be limited to summer months from May 15 through October

15. h Heavy equipment shall be placed outside of drainage channels except when necessary to perform the Work.
i Upon completion of construction activities, drainage channels shall be restored and re-contoured as nearly as practicable to pre-project conditions, and shall match adjacent natural channel contours.
j All demolished materials shall be removed from the project sites and disposed of by the Contractor.

Refer to Specification Section 02 41 10 “Demolition, Salvage and Abandonment” for additional details and requirements.
3 EROSION AND SEDIMENT CONTROLS
a The controls and measures required by the Contractor include but are not limited to the items below.
i Structural Practices: Structural practices shall be implemented to divert flows from exposed soils, temporarily store flows, or otherwise limit runoff and the discharge of pollutants from exposed areas of the site. Structural practices shall be implemented in a timely manner during the construction process to minimize erosion and sediment runoff. Structural practices shall include the following devices.
1 Fiber Rolls (sediment logs or wattles): Contractor shall provide fiber rolls as temporary structural practice to minimize erosion and sediment runoff. Fiber rolls shall be properly placed and installed to effectively retain sediment immediately after completing each phase of work (e.g., clearing and grubbing, excavation, embankment, and grading) in each independent runoff area (e.g., after clearing and grubbing in an area between a ridge and drain, fiber rolls shall be placed as work progresses; fiber rolls shall be removed/replaced/relocated as needed for work to progress in the drainage area). Areas where fiber rolls are to be used are shown on the drawings. Final removal of fiber roll barriers shall be upon approval by the Owner. Fiber Rolls shall be provided as follows:
a Along the downhill perimeter edge of all areas disturbed. b Along the top of the slope or top bank of drainage ditches, channels, swales, etc. that traverse disturbed areas.
c Along the toe of all cut slopes and fill slopes of the construction areas. d Perpendicular to the flow in the bottom of existing drainage ditches, channels, swales, etc. that traverse disturbed areas or carry runoff from disturbed areas. Rows shall be spaced a maximum of 100 feet apart.
e Perpendicular to the flow in the bottom of new drainage ditches, channels, and swales.

Rows shall be spaced a maximum of 100 feet apart.
f At the entrance to culverts that receive runoff from disturbed areas. 2 Diversion Dikes. Diversion dikes shall have a maximum channel slope of 2 percent and shall be adequately compacted to prevent failure. The minimum height measured from the top of the dike to the bottom of the channel shall be 18 inches. The minimum base width shall be 6 feet and the minimum top width shall be 2 feet. The Contractor shall ensure that the diversion dikes are not damaged by construction operations or traffic. Diversion dikes shall be located as shown on the drawings.
3 A stabilized vehicular entrance/exit at the Well #9 site shall be provided in accordance with Stabilized Construction Entrance/Exit Detail TC-1 of the Caltrans Construction Site Best Agenda Item Number 6
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Management Practices Manual. (Caltrans Storm Water Quality Handbooks, Construction Site Best Management Practices Manual, March 1, 2003).
4 SUBMITTALS
a Prepare and submit a Water Pollution Control Plan, including a minimum of one (1) 11”x17” figure showing the details of the water pollution control measures and Best Management Practices (BMPs) that will be implemented.
i As part of the water pollution control work, a Water Pollution Control Program, hereafter referred to as the "WPCP," is required for this contract. The WPCP shall conform to the requirements in Section 13-2, "Water Pollution Control Program," of the Standard Specifications, the requirements in the Caltrans manuals, and these Construction Details. ii No work having potential to cause water pollution, as determined by the Engineer, shall be performed until the WPCP has been approved by the Engineer. iii Within 30 calendar days after the approval of the contract, the Contractor shall submit 3 copies of the WPCP to the Engineer. The Contractor shall allow 10 days for the Engineer to review the WPCP. If revisions are required, as determined by the Engineer, the Contractor shall revise and resubmit the WPCP within 7 days of receipt of the Engineer's comments and shall allow 7 days for the Engineer to review the revisions. Upon the Engineer's approval of the WPCP, 3 additional copies of the WPCP incorporating the required changes shall be submitted to the Engineer. Minor changes or clarifications to the initial submittal may be made and attached as amendments to the WPCP. In order to allow construction activities to proceed, the Engineer may conditionally approve the WPCP while minor revisions or amendments are being completed. The objectives of the WPCP shall be to identify pollution sources that may adversely affect the quality of storm water discharges associated with the project and to identify, construct, implement and maintain water pollution control measures, hereafter referred to as control measures, to reduce to the extent feasible pollutants in storm water discharges from the construction site during construction under this contract. iv The WPCP shall incorporate control measures and minimum requirements in the following categories:
1 Soil stabilization practices;
2 Sediment control practices;
3 Wind Erosion Control practices;
4 Tracking control practices;
5 Non-storm water management and waste management and materials disposal control practices.
v Specific objectives and minimum requirements for each category of control measures are contained in the Storm Water Pollution Prevention Plan (SWPPP) and Water Pollution Control Program (WPCP) Preparation Manual.
vi The Contractor shall consider the objectives and minimum requirements presented in the SWPPP-WPCP Preparation Manual for each of the above categories. When minimum requirements are listed for any category, the Contractor shall incorporate into the WPCP and implement on the project, one or more of the listed minimum controls required in order to meet the pollution control objectives for the category. In addition, the Contractor shall consider other control measures presented in the SWPPP-WPCP Preparation Manual and shall incorporate into the WPCP and implement on the project the control measures necessary to meet the objectives of the WPCP. The Contractor shall document the selection process in accordance with the procedure specified in the SWPPP-WPCP Preparation Manual. vii The following contract items of work, as shown on the project Plans, shall be incorporated into the WPCP as critical temporary control measures:
1 During construction and as part of the erosion control measures:
a Place fiber rolls around all soil stock piles and at the grading limits. b Place straw bales or rock bags around all storm drain inlets. c The Contractor shall consider other control measures to supplement these critical temporary control measures when necessary to meet the pollution control objectives of the WPCP.

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viii The Contractor shall maintain and protect the temporary control measures throughout the duration of the project and shall restore these controls to the lines and grades shown on the Plans prior to acceptance of the project.
ix The WPCP shall include, but not be limited to, the following items as described in the Handbook:
1 Project description and Contractor's certification;
2 Project information;
3 Pollution sources, control measures, and water pollution control drawings; and 4 Amendments, if any.
x The Contractor shall amend the WPCP, graphically and in narrative form, whenever there is a change in construction activities or operations which may affect the discharge of significant quantities of pollutants to surface waters, ground waters, municipal storm drain systems, or when deemed necessary by the Engineer. The WPCP shall also be amended if the WPCP has not achieved the objective of reducing pollutants in storm water discharges. Amendments shall show additional control measures or revised operations, including those in areas not shown in the initially approved WPCP, which are required on the project to control water pollution effectively. Amendments to the WPCP shall be submitted for review and approval by the Engineer in the same manner specified for the initially approved WPCP. Amendments shall be dated and attached to the on-site WPCP document.
xi The Contractor shall keep a copy of the WPCP, together with updates, revisions and amendments at the project site.
b Submit all product data, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review. Incomplete submittals will not be reviewed.
c Product Data:
i Submit data for erosion control materials listed in this section indicating properties, test methods, and manufacturer's installation instructions.
d Material Source: Submit name of imported fill materials supplied. e Manufacturer's Certificate: Submit Certifications that products meet or exceed specified requirements.
11 PRODUCTS
1 TEMPORARY FIBER ROLLS (sediment logs or wattles)
a Standard Specifications, Section 21-1.02P Fiber Rolls. i Type A or Type B
ii 8 – 10 inches in diameter, 10 – 20 feet long.
b Standard Specifications, Section 13-6.03E Temporary Fiber Rolls. c The Contractor shall use wooden stakes for fiber roll installation. Wooden stakes utilized for fiber roll installation, shall have a minimum cross section of 1 inch by 2 inches, or as suggested by the fiber roll manufacturer.
2 EROSION CONTROL BLANKETS
a Standard Specifications, Section 21-1.02O Jute Mesh or Netting. 3 TEMPORARY COVERS
a Standard Specifications, Section 13-5.02F Temporary Covers. b Standard Specifications, Section 88-1.02H Temporary Covers.

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4 GRAVEL-FILLED BAGS
a Standard Specifications, Section 13-5.02G Gravel-Filled Bags. b Standard Specifications, Section 88-1.02F Gravel-Filled Bags. 5 SEDIMENT FILTER BAGS
a Standard Specifications, Section 88-1.02G Sediment Filter Bag. 6 TEMPORARY HYDRAULIC MULCH
a Standard Specifications, Section 13-5.03E Temporary Hydraulic Mulch (Bonded Fiber Matrix). b Standard Specifications, Section 13-5.03F Temporary Hydraulic Mulch (Polymer-Stabilized Fiber Matrix).
7 TEMPORARY TACKED STRAW
a Standard Specifications, Section 13-5.03H Temporary Tacked Straw. 8 TEMPORARY HYDROSEED
a Standard Specifications, Section 13-5.03I Temporary Hydroseed. 12 EXECUTION
1 GENERAL
a Upon approval of the WPCP, the Contractor shall be responsible throughout the duration of the project for installing, constructing, inspecting and maintaining the control measures included in the WPCP and any amendments thereto and for removing and disposing of temporary control measures. Unless otherwise directed by the Engineer or specified in these construction details, the Contractor's responsibility for WPCP implementation shall continue throughout any temporary suspension of work ordered in accordance with Section 8 1.06, "Suspensions," of the Standard Specifications. Requirements for installation, construction, inspection, maintenance, removal and disposal of control measures are specified in the Handbook and these construction details.
b Soil stabilization practices and sediment control measures, including minimum requirements, shall be provided throughout the duration of the project.
c Implementation of soil stabilization practices and sediment control measures for soil-disturbed areas of the project site shall be completed prior to the start of any other construction activities. d Throughout the winter season, the active, soil-disturbed area of the project site shall be no more than 0.04 acres. The Engineer may approve, on a case-by-case basis, expansions of the active, soil-disturbed area limit. The Contractor shall demonstrate the ability and preparedness to fully deploy soil stabilization practices and sediment control measures to protect soildisturbed areas of the project site before the onset of precipitation. The Contractor shall maintain a quantity of soil stabilization and sediment control materials on site equal to 30 percent of that sufficient to protect unprotected, soil-disturbed areas on the project site and shall maintain a detailed plan for the mobilization of sufficient labor and equipment to fully deploy control measures required to protect unprotected, soil-disturbed areas on the project site prior to the onset of precipitation. The Contractor shall include a current inventory of control measure materials and the detailed mobilization plan as part of the WPCP.

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e Soil-disturbed areas of the project site shall be considered to be non-active whenever soil disturbing activities are expected to be discontinued for a period of 10 or more days and the areas are fully protected. Areas that will become non-active shall be fully protected with soil stabilization practices and sediment control measures within 5 days of the discontinuance of soil disturbing activities or prior to the onset of precipitation, whichever is first to occur. f Active soil-disturbed areas of the project site shall be fully protected at the end of each day with soil stabilization practices and sediment control measures unless fair weather is predicted through the following work day. The weather forecast shall be monitored by the Contractor on a daily basis.
g The National Weather Service (http://www.weather.gov/) forecast shall be used. If precipitation is predicted prior to the end of the following work day, construction scheduling shall be modified, as required, and the Contractor shall deploy functioning control measures prior to the onset of the precipitation.
h The Contractor shall implement, year-round and throughout the duration of the project, control measures included in the WPCP for sediment tracking, wind erosion, non-stormwater management and waste management and disposal.
i The Engineer may order the suspension of construction operations which create water pollution if the Contractor fails to conform to the requirements of this section "Erosion Control" as determined by the Engineer.
2 INSTALLATION OF FIBER ROLLS (sediment logs or wattles) a Fine grade the subgrade by hand dressing where necessary to remove local deviations and to remove larger stones or debris that will inhibit intimate contact of the fiber roll with the subgrade.

Prior to roll installation, contour a concave key trench 2 to 4 inches deep along the proposed installation route. Soil excavated in trenching should be placed on the uphill or flow side of the roll to prevent water from undercutting the roll.
b Place fiber rolls into the key trench and stake on both sides of the roll within 6 feet of each end.

Spacing for stakes shall be 3 to 5 feet. Stakes are typically driven in on alternating sides of the roll. Stakes shall be buried 12 inches minimum.
c When more than one fiber roll is placed in a row, the rows should be abutted securely to one another to provide a tight joint, not overlapped. Fiber rolls shall be placed in a single row, lengthwise on the contour, with ends of adjacent rolls tightly abutting one another. 3 INSTALLATION OF OTHER SEDIMENT AND EROSION CONTROLS
a Install other sediment and erosion controls in accordance with project SWPPP and Standard Specification Section 13.
4 MAINTENANCE
a The Contractor shall maintain the temporary and permanent vegetation, erosion and sediment control measures, and other protective measures in good and effective operating condition by performing routine inspections to determine condition and effectiveness, by restoration of destroyed vegetative cover, and by repair of erosion and sediment control measures and other protective measures. The following procedures shall be followed to maintain the protective measures.
i Fiber Roll Maintenance. Fiber roll barriers shall be inspected in accordance with paragraph INSPECTIONS. Close attention shall be paid to the repair of damaged rolls, end runs and undercutting beneath rolls. Necessary repairs to barriers or replacement of rolls shall be accomplished promptly. Sediment deposits shall be removed when deposits reach one-half of the height of the barrier. Roll rows used to retain sediment shall be turned uphill at each end of Agenda Item Number 6
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SPECIFICATIONS
each row. When a fiber roll barrier is no longer required, it shall be removed. The immediate area occupied by the roll and any sediment deposits shall be shaped to an acceptable grade.

The areas disturbed by this shaping shall be re-vegetated. 5 INSPECTIONS
a General. The Contractor shall inspect disturbed areas of the construction site, areas used for storage of materials that are exposed to precipitation that have not been finally stabilized, stabilization practices, structural practices, other controls, and area where vehicles exit the site at least once every seven (7) calendar days, within two (2) calendar days of forecasted rains, and within 24 hours of the end of any storm that produces 0.5 inches or more rainfall at the site.

Where sites have been finally stabilized, such inspection shall be conducted at least once every month.
b Inspections Details. Disturbed areas and areas used for material storage that are exposed to precipitation shall be inspected for evidence of, or the potential for, pollutants entering the drainage system. Erosion and sediment control measures identified in the Storm Water Pollution Prevention Plan shall be observed to ensure that they are operating correctly.

Discharge locations or points shall be inspected to ascertain whether erosion control measures are effective in preventing significant impacts to receiving waters. Locations where vehicles exit the site shall be inspected for evidence of offsite sediment tracking. c Inspection Reports. For each inspection conducted, the Contractor shall prepare a report summarizing the scope of the inspection, name(s) and qualifications of personnel making the inspection, the date(s) of the inspection, major observations relating to the implementation of the Storm Water Pollution Prevention Plan, maintenance performed, and actions taken. The report shall be furnished to the Engineer within 24 hours of the inspection as a part of the Contractor's work. A copy of the inspection report shall be maintained on the job site.

END OF SECTION
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SECTION 32 12 16

HOT MIX ASPHALT PAVING
PART 45 GENERAL

1.1 DESCRIPTION
A. Work included: Work covered in this section consists of performing all operations necessary for producing and placing hot mix asphalt (HMA) by mixing aggregate and asphalt binder at a mixing plant and spreading and compacting the HMA mixture.

B. General intent: All roadway surfaces shall be replaced in a manner which will result in a surface equal to or better than that existing prior to the trenching operations. HMA shall be replaced with a minimum thickness equal to the existing plus 1 inch, or 4 inches total, whichever is greater.

C. Section Includes:

1. Quality Control Plan.

2. Quality Control Testing.

3. Acceptance Testing.

4. Asphalt Binder and Tack Coat.

5. Aggregate Materials.

6. Hot Mix Asphalt.

7. Thermoplastic Materials

8. Traffic Paint

9. Temporary Traffic Striping and Markings
D. HMA shall be provided in accordance with the Type A HMA construction process and conform to the latest Caltrans Section 39-2 of the Standard Specifications and as detailed in this specification.

E. Related Work described elsewhere:

1. Section 31 00 00 - Earthwork

2. Section 31 23 00 - Trench Excavation and Backfill
F. References

1. AMERICAL ASSOCIATION OF STATE HIGHWAY TRANSPORTATION

OFFICIALS (AASHTO)
a. M 17 2011 (2015) Standard Specification for Mineral Filler for Bituminous Paving Mixtures
b. M 323 2013 Standard Specification for Superpave Volumetric Mix Design c. R 30 2002 (2015) Standard Practice for Laboratory Conditioning of Asphalt Mixtures
d. R 59 2011 (2015) Standard Practice for Recovery of Asphalt Binder from Solution by Abson Method
e. T 27 2014 Standard Method for Test for Sieve Analysis of Fine and Coarse Aggregates
f. T 49 2014 Standard Method of Test for Penetration of Bituminous Materials g. T 59 2013 Standard Method of Test for Emulsified Asphalts h. T 96 2002 (2010) Standard Method of Test for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine i. T 164 2014 Standard Method of Test for Quantitative Extraction of Asphalt Binder from Asphalt Mixtures
j. T 176 2008 Standard Method of Test for Plastic Fines in Graded Aggregates and Soils by Use of the Sand Equivalent Test
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k. T 209 2012 Standard Method of Test for Theoretical Maximum Specific Gravity (Gmm) and Density of Asphalt Mixtures
l. T 269 2014 Standard Method of Test for Percent Air Voids in Compacted Dense and Open Asphalt Mixtures
m. T 275 2007 (2012) Standard Method of Test for Bulk Specific Gravity (Gmb) of Compacted Asphalt Mixtures Using Paraffin-Coated Specimens n. T 283 2014 Standard Method of Test for Resistance of Compacted Asphalt Mixtures to Moisture-Induced Damage
o. T 304 2011 Standard Method of Test for Uncompacted Void Content of Fine Aggregate
p. T 305 2011 Standard Method of Test for Determination of Draindown Characteristics in Uncompacted Asphalt Mixtures
q. T308 2010 Standard Method of Test for Determining the Asphalt Binder Content of Asphalt Mixtures by the Ignition Method
r. T 312 2014 Standard Method of Test for Preparing and Determining the Density of Asphalt Mixture Specimens by Means of the Superpave Gyratory Compactor s. T 313 2012 (2016) Standard Method of Test for Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR) t. T 315 2012 (2016) Standard Method of Test for Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR) u. T 324 2014 Standard Method of Test for Hamburg Wheel-Track Testing of Compacted Asphalt Mixtures
v. T 329 2013 Standard Method of Test for Moisture Content of Asphalt Mixtures by Oven Method
w. T 335 2009 Standard Method of Test for Determining the Percentage of Fracture in Coarse Aggregate

2. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
a. D36/D36M 2014 Standard Test Method for Softening Point of Bitumen (Ringand-Ball Apparatus) b. D92 2012b Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester
c. D217 2017 Standard Test Methods for Cone Penetration of Lubricating Grease
d. D297 2015 Standard Test Methods for Rubber Products—Chemical Analysis
e. D445 2014 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity) f. D1856 2009 (Reapproved 2015) Standard Test Method for Recovery of Asphalt from Solution by Abson Method
g. D2007 2011 Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method
h. D2074 2007 (Reapproved 2013) Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method
i. D2995 1999 (Reapproved 2009) Standard Practice for Estimating Application Rate and Residual Application Rate of Bituminous Distributors j. D4791 2010 Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate k. D5329 2009 Standard Test Methods for Sealants and Fillers, HotApplied, for Joints and Cracks in Asphalt Pavements and Portland Cement Concrete Pavements
l. D7741/D774M 2011 Standard Test Method for Measurement of Apparent Viscosity of Asphalt-Rubber or Other Asphalt Binders by Using a Rotational Handheld Viscometer
m. Asphalt Institute MS-2 7th Edition (2015)
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SPECIFICATIONS

3. State of California, Business and Transportation Agency, Department of Transportation (Caltrans), Standard Specifications, 2018 edition excluding measurement and payment items.

1.2 QUALITY CONTROL PLAN
A. Establish, implement and maintain a Quality Control Plan (QCP) to ensure materials and work comply with the specifications and the corrective actions required to control the quality of work.

The QCP shall comply with these specifications and Section 39-2 of the Caltrans Standard Specifications.

B. Attend a pre-paving conference with the Engineer to discuss methods of performing the production and paving work and how quality control will be performed throughout.

C. The Contractor must identify the HMA sampling locations in their QCP. During production, take samples under California Test Method (CT) 125 except if requested in writing with Engineer approval, you may sample HMA from:

1. The plant

2. The truck

3. The paver hopper

4. The mat behind the paver
D. In place density tests per CT 375 Nuclear Gage field test shall be performed by the Contractor during HMA operations to meet compaction requirements per Standard Specifications. The frequency of testing shall be in accordance with CT 375 and Section 39-2.02A of the Standard Specifications.

E. Qualifications of workers: Provide sufficient skilled workers and supervisors who shall be present at all times during execution of this portion of the Work and who shall be thoroughly familiar with the type of construction involved and the materials and techniques specified.

F. Codes and standards:

1. Wherever a test method is referenced in this section, it shall be made in accordance with the most current test method in use by the California Department of Transportation (Caltrans) in the State Standard Specifications, latest edition.

2. For references made to the Standard Specifications, reference shall mean State of California, Business and Transportation Agency, Department of Transportation (Caltrans), Standard Specifications, latest edition, excluding measurement and payment items.

1.3 SUBMITTALS
A. Submit all product data, shop drawings, laboratory test results, material source information, and certificates of compliance listed in this Section under a single submittal cover for review.

Incomplete submittals will not be reviewed.

B. The Contractor shall provide the Engineer with the following information a minimum of 10 days prior to commencing the Work:

1. Hot mix asphalt job mix formula (JMF) in accordance with Caltrans Standard Specifications.
a. Proposed JMF on Form CEM-3511.
1) Include percentage of reclaimed asphalt pavement (RAP) b. Mix design documentation, data and aggregate quality on Form CEM-3512 dated within 12 months of submittal.
c. JMF verification on Form CEM-3513, if applicable
d. JMF renewal on Form CEM-3514, if applicable
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e. Materials Safety Data Sheets (MSDS) for:
1) Asphalt binder
2) Supplemental fine aggregate except fines from dust collectors 3) Antistrip additives

2. Written confirmation from the supplier that the JMF to be supplied meets all specified requirements.

C. Tack Coat

1. Submit asphalt binder tack coat and asphaltic emulsion tack coat.

D. The Contractor shall develop and submit a Quality Control Plan for the project. This shall, at a minimum, cover the areas or subjects contained in Section 39-2 of the Standard Specifications. The Contractor shall not begin hot mix asphalt production or placement without written approval from the Engineer of the QCP and an approved JMF. Approval of the QCP and JMF by the Engineer does not relieve the contractor of responsibility for quality control or work methods.

1. Test Reports:
a. Submit reports of tentative paving material design and testing. b. Submit reports of testing and inspection during the course of the Project. 1) Submit all laboratory test reports for daily Rice Specific Gravity and Nuclear Gage field tests immediately upon receipt from the testing laboratory. 2) Submit daily field summary reports for all testing activities. 3) Submit current certificates from all laboratories immediately upon receipt from the testing laboratory. Certificates shall not be expired or more than 1 year old. 4) Submit current certificates for mixes, materials and products immediately upon receipt from the testing laboratory or product supplier. Certificates shall not be expired for more than 1 year, and must reflect materials actually used on the project. JMF shall have no changes in aggregate, asphalt, or other materials from what was provided in current certificates.

2. Quality control sampling and acceptance testing shall be performed by the Contractor in accordance with Section 39-2.02.

1.4 ENGINEER’S ACCEPTANCE
A. In addition to the Quality Control Plan, the Engineer may provide an independent quality assurance to perform independent sampling and acceptance testing in accordance with Section 39-2 of the Standard Specifications.

B. Acceptance testing may be performed by the Engineer in accordance with Section 39-2.

C. In place density tests per CT 375 Nuclear Gage field test may be performed during HMA operations by the Engineer to confirm compaction requirements are per Standard Specifications.

1.5 PRODUCT HANDLING
A. All products described herein shall be handled in conformance to the applicable provisions of the Standard Specifications.

1.6 PROJECT CONDITIONS
A. Weather Limitations:

1. No HMA shall be placed when weather conditions prevent the proper handling, finishing, or compaction of the mixtures.

2. Do not apply when underlying surface is muddy, frozen or wet.

3. Do not place tack coat when temperature is below 45º F.

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4. Do not place hot mix asphalt when air temperature is below 45º F and surface temperature is below 50º F.

B. Traffic Striping and Pavement Markers

1. Do not apply pavement marking paint within 8 hours of fog or rain or when below 40 Degrees F.

2. Contractor shall guarantee that all traffic lane pavement markers be in place and adhered to the pavement for a period of not less than 90 days from the date of acceptance of the work by the City.

3. All new traffic striping and pavement markings shall be thermoplastic, unless otherwise shown on the Drawings.

4. No pavement markings shall be applied to any roadway surface until new hot mix asphalt surface has cured for a minimum of seven (7) days when hot melt bituminous adhesive is used, and not less than 14 days when epoxy adhesive us used.

PART 46 PRODUCTS

1.1 TACK COAT
A. Tack Coat, Grade PG 64-16, conforming to the provisions of Sections 39 and 92 of the Standard Specifications shall be used between layers of each lift of HMA, and on curbs, gutters and construction joints.

1.2 ASPHALT BINDER
A. Asphalt binder, Grade PG 64-16, conforming to the provisions of Sections 39 and 92 of the Standard Specifications.

1.3 AGGREGATE
A. Aggregate shall be clean and free from deleterious substances and shall meet the gradation and quality for 1/2-inch HMA Type A in the Caltrans Standard Specifications.

1.4 HOT MIX ASPHALT
A. Hot Mix Asphalt shall be 1/2-inch HMA Type A and conform to the latest provisions of Section 39-2 of the Standard Specifications.

B. HMA batch plant shall be Caltrans-qualified under the Caltrans Materials Plant Quality Program of the Standard Specifications.

C. Reclaimed asphalt pavement shall be acceptable in accordance with the Standard Specifications not exceeding 15.0 percent of the aggregate blend.

1.5 THERMOPLASTIC AND TRAFFIC PAINT
A. Provide thermoplastic in accordance with the Section 84-2.02B of the Standard Specifications.

B. Provide traffic paint where shown on the Plans in accordance with Section 84-2.02C of the Standard Specifications.

C. Provide glass beads in thermoplastic in accordance with Section 84-2.02D of the Standard Specifications.

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1.6 TEMPORARY TRAFFIC STRIPING, PAVEMENT MARKINGS AND PAVEMENT MARKERS A. Provide temporary traffic striping, pavement markings and pavement markers in accordance with Section 12-6.03D of the Standard Specifications.

PART 47 EXECUTION

1.1 PROTECTION OF EXISTING STREET SURFACE
A. During the entire construction period, the Contractor shall take care to protect existing pavement or sealed surfaces. Backhoes and trenchers must have street pads. Grossers or metal tipped pads will not be allowed. Surfaces scarred by cleanup or excavation equipment shall be repaired in a manner satisfactory to the Engineer. Any and all damage caused by the Contractor’s operations to existing roads and streets shall be repaired by the Contractor to at least the original condition and to the satisfaction of the Engineer, at no additional cost to the City.

B. If pavement is damaged (excessive loading, grouser marking, scarring/scraping of pavement, etc.) in adjacent lanes, a full lane width grinding and overlay will be required as directed by the City. If pavement is damaged due to excessive loading near the trench wall causing openings in the pavement, full depth structural section replacement will be required as directed by the City. If pavement restoration comes to within 4 feet from the edge of the pavement or lip of gutter/curb, pavement shall be replaced to the edge of pavement or lip of gutter/curb.

1.2 PAVING REMOVAL
A. Sawcutting shall be required for all roads. See Section 31 23 00 “Trench Excavation and Backfill” for paving removal requirements.

B. The upper 12 inches of subgrade and aggregate base shall be compacted to 95% relative compaction in accordance with ASTM D1557 prior to placement of HMA.

C. Clean and dry subgrade area prior to commencing with placement of HMA

1.3 AGGREGATE BASE
A. Aggregate base shall be spread and compacted according to Section 26 of the Standard Specifications. Compact to a minimum 95 percent relative compaction in accordance with ASTM D1557.

1.4 TACK COAT
A. Ensure the area is clean and dry. All material accumulations which would interfere with the adhesion of the tack coat or with the placing and performance of the HMA shall be removed, including dust, loose aggregate, soil, leaves, and pieces or lumps of other foreign material deposited on the surface.

B. A tack coat shall be applied to existing pavement including planed surfaces, between HMA layers, and to vertical surfaces of curbs, gutters and construction joints at the minimum residual rates specified in Section 39-2 of the Standard Specifications.

C. Before placing HMA, a tack coat shall be furnished and applied uniformly to contact surfaces of all cold pavement joints, curbs, gutters, and all existing pavement to be surfaced in conformance with Section 39-2 of the Standard Specifications.

D. Tack coat shall be applied to any course in advance of spreading the next course unless the surface temperature is at least 140 °F.

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E. Hot mix asphalt shall not be placed until tack coat has cured.

F. Immediately in advance of placing HMA, apply additional tack coat to damaged areas or where loose or extraneous material is removed.

G. Close areas receiving tack coat to traffic. Do not track tack coat onto pavement surfaces beyond the job site.

H. The cost of applying tack coat will be considered included in the Contract Price and no additional compensation will be allowed therefore.

1.5 TRANSPORTING HOT MIX ASPHALT
A. From mixing site in trucks having tight, clean compartments.

B. Coat hauling compartments with lime-water mixture to prevent sticking.

C. Elevate and drain compartment of excess solution before loading mix.

D. Provide covers over asphalt concrete mixture to protect from weather and to prevent loss of heat.

E. During periods of cold weather or for long distance deliveries, pre-insulation around entire truck bed surfaces.

F. Do not use petroleum products such as kerosene or diesel fuel to release HMA from trucks, spreaders, or compactors.

1.6 HOT MIX ASPHALT
A. HMA surfacing shall conform to the provisions of Section 39 of the Standard Specifications.

Placing HMA shall be done under suitable weather conditions for such operations. Rain, snow or other inclement weather will be cause for discontinuing paving Work. The Engineer shall have the authority for determining whether weather conditions are sufficient cause to postpone work.

1.7 SPREADING AND COMPACTING
A. Spreading and compacting shall be performed in accordance with Section 39-2 of the Standard Specifications.

B. Longitudinal joints in the top layer must match specified lane edges shown on the striping plans. Longitudinal joints in lower HMA layers shall be offset at least 0.5 feet from each side of the specified lane edges.

C. Finish rolling shall be completed before pavement surface temperature is below 150 degrees F.

D. Traffic shall not be allowed on HMA until mid-depth temperature is below 160 degrees F and the pavement surface temperature is below 140 degrees F.

1.8 SMOOTHNESS AND DRAINAGE
A. Verify smoothness and drainage using a water truck. Spray sufficient quantity of water to cause surface runoff from the entire newly paved surface. Any puddles and birdbaths deeper than 1/4 inch shall be corrected by sawcutting, removing and replacing HMA a sufficient distance from puddles and birdbaths to correct them, or by grinding. All smoothness and Agenda Item Number 6
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drainage corrections to HMA shall be at the Contractor’s expense and to the satisfaction of the Engineer.

1.9 TRENCH PATCHING
A. All trench patches shall be limited to the width of the trench plus 1 foot on either side of the trench.

1.10 THERMOPLASTIC TRAFFIC STRIPES AND PAVEMENT MARKINGS A. Provide and maintain temporary traffic striping, pavement markings and pavement markers during the course of construction in accordance with Section 12 of the Standard Specifications.

B. All new surfaces shall have the thermoplastic traffic stripes and markings applied in two applications in accordance with Section 84-2 of the Caltrans Standard Specifications.

C. All striping and markings and pavement markers shall be laid out by the Contractor and field reviewed by the Engineer prior to final placement of the striping and marker materials. Failure to obtain this field review shall be basis for rejection of the work by the Engineer. Any work rejected shall be completely removed, the surface of the pavement restored to the satisfaction of the City, and new striping and marking placed at the Contractor’s expense.

D. Restriping except where indicated on the drawings, shall coincide with the original painting and shall be applied in one application in accordance with Section 84-2 of the Caltrans Standard Specifications.

E. Where striping and markers joins existing striping and markers, as shown on the Drawings, the Contractor shall begin and end the transition from the existing striping pattern or from the new striping pattern a sufficient distance to ensure continuity of the striping pattern.

F. All surfaces to be painted shall be clean and dry prior to painting. Ample time shall be allowed between placement of the asphalt pavement and the initial painting application. There shall be a minimum drying time between thermoplastic applications of approximately 20 minutes.

G. Striping shall not be applied at temperatures below 50° F or if pavement surfaces are wet.

Striping shall not be installed until seven (7) days after placement of hot mix asphalt.

1.11 CURB PAINTING
A. The Contractor shall paint curbs with two coats of paint as shown on the Drawings in conformance with Section 84-2 of the Standard Specifications.

1.12 STREET MAINTENANCE
A. Until the permanent pavement is placed, the base rock or temporary asphaltic plant mix at the surface of the trench shall be maintained at all times at a grade level with the adjacent street.

Continuous inspection and maintenance of the trench area will be required. Lights and barriers shall be maintained on all Work that is not safe for travel until such time as is made safe.

1.13 CONTRACTOR’S RESPONSIBILITY
A. Settlement of replaced pavement over trenches within the warranty period shall be considered the result of improper or inadequate compaction of the subbase or base materials. The Contractor shall promptly repair all pavement deficiencies noted during the warranty period.

END OF SECTION
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SPECIFICATIONS
SECTION 32 12 17

SLURRY SEAL
PART 48 GENERAL

1.1 DESCRIPTION
A. Work included: Work covered in this section consists of performing all operations necessary for producing and placing slurry seal.

General intent: This section shall consist of furnishing and placing a Type II slurry seal onto existing asphalt cement (AC) pavement at locations and to the limits shown on the Plans in conformance with the requirements of Section 37-3 “Slurry Seals and Micro-Surfacing,” of the Revised Standard Specifications and the International Slurry Seal Association Publication A105, dated February 2010 (copies available from www.slurry.org), except where specified otherwise in these Special Provisions.

The completed slurry seal shall leave a homogeneous mat, adhere firmly to the prepared surface, and have a friction resistant surface texture throughout its service life.

Cracks from ¼-inch and less than 1-inch in width shall be sealed per Section 37-6, “Crack Treatments” of these Special Provisions.

B. Section Includes:

1. Aggregate

2. Slurry Seal
C. Related Work described elsewhere:

1. Section 31 00 00 – Earthwork

2. Section 32 12 16 – Hot Mix Asphalt Paving
D. References

1. AMERICAL ASSOCIATION OF STATE HIGHWAY TRANSPORTATION

OFFICIALS (AASHTO)
a. T 44 2014 Standard Method of Test for Solubility of Bituminous Materials b. T 49 2015 Standard Method of Test for Penetration of Bituminous Materials c. T 51 2009 Standard Method of Test for Ductility of Asphalt Materials d. T 53 2009 Standard Method of Test for Softening Point of Bitumen (Ring-andBall Apparatus) e. T 59 2016 Standard Method of Test for Emulsified Asphalts f. T 225 2016 Standard Method of Test for Diamond Core Drilling for Site Investigation
g. T 335 2009 Standard Method of Test for Determining the Percentage of Fracture in Coarse Aggregate

2. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
a. C29M 2017 Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate
b. D36 2014 Standard Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
c. D70 2018 Standard Test Method for Density of Semi-Solid Asphalt Binder (Pycnometer Method)
d. D92 2016 Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester
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