Ukiah City Council
May 15, 2024

Riverside Park Regeneration Project Section 312514.14
April 2024 Earthwork
02300-1
SECTION 02300

EARTHWORK
PART 1 GENERAL

1.01 SCOPE OF WORK
A. Furnish all labor, material, equipment, and services necessary to provide all work, complete in place, as indicated on Drawings and specified herein.

Work specified in this Section includes, but is not limited to the following:

1. Rough Grading of site, Excavating, backfilling and grading, as required to obtain contours and elevations indicated on the Drawings.

2. Subgrade preparation.

3. Compaction and Testing.

4. Protection.

5. Disposal.

B. Related Work Specified in Other Sections

1. SECTION 02230 – SITE CLEARING

2. SECTION 02324 – TRENCHING
C. Related Documents

1. AASHTO T 180 - Standard Specification for Moisture-DensityRelations of Soils Using a 4.54 kg (10-lb) Rammer and a 457 mm (18 in.) Drop; American Association of State Highway and Transportation Officials; 1997.

2. ASTM D 698 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)); 2000a.

3. ASTM D 1556 - Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method; 2000.

4. ASTM D 1557 - Standard Test Methods for Laboratory Compaction

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Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN m/m3)); 2000.

5. ASTM D 2167 - Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method; 1994.

6. ASTM D 2419 - Standard Test Method for Sand Equivalent Value of Soils and Fine Aggregates; 1995.

7. ASTM D 2922 - Standard Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth); 1996.

8. ASTM D 3017 - Standard Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth); 1996.

9. Geotechnical Investigation for site is available in accordance with Information Available to Bidders.

D. Definitions

1. Borrow: Approved soil material imported from off-site for use as Structural Fill or Backfill.

2. Excavation: Removal of material encountered above subgrade elevations. a. Authorized Over-Excavation: Excavation below subgrade elevations or beyond indicated horizontal dimensions as shown on plans or authorized by the Owner’s Representative.
b. Unauthorized Over-Excavation: Excavation below subgrade elevations or beyond indicated horizontal dimensions without authorization by the Owner’s Representative. Unauthorized excavation shall be without additional compensation.

4. Structural Backfill: Soil materials approved by the Owner’s Representative and used to fill excavations resulting from removal of existing below grade facilities, including trees. See Section 02324 – Trenching for trench backfill.

5. Structural Fill: Soil materials approved by the Owner’s Representative and used to raise existing grades.

6. Rock: Rock material in beds, ledges, unstratified masses, and conglomerate deposits and boulders of rock material ¾-cubic yards or more in volume that when tested by an independent geotechnical testing agency, according to ASTM D 1586, exceeds a standard penetration resistance of 100 blows/2-inches.

7. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs,

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mechanical and electrical appurtenances, or other man made stationary features constructed above or below grade.

8. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, base or topsoil materials.

9. Unsuitable Material: Any soil material that is not suitable for a specific use on the Project. The Owner’s Representative will determine if a soil material is unsuitable.

10. Utilities: underground pipes, conduits, ducts and cables.

1.02 SUBMITTALS
A. Follow submittal procedures outlined in Section 01330 – SUBMITTAL PROCEDURES.

B. Submit material certificates signed by the material producer and the Contractor, certifying that each material item complies with, or exceedsthe specified requirements.

C. Project Record Documents: Record actual locations of pipe mains, valves, connections, and invert elevations. Identify and describe unexpected variations to subsoil conditions or discovery of uncharted utilities.

1.03 QUALITY ASSURANCE
A. Testing and Inspection Service (Owner’s Representative) shall provide soil testing and inspection services for quality assurance testing during earthwork operations.

B. Percentage of compaction specified shall be the minimum acceptable. The percentage represents the ratio of the dry density of the compacted material to the maximum dry density of the material as determined by the procedure set forth in ASTM D 1557.

C. Perform excavation, filling, compaction and related earthwork under the observation of the Owner’s Representative. Materials placed without approval of the Owner’s Representative will be presumed to be defective and, at the discretion of the Owner’s Representative, shall be removed and replaced at no cost to the Owner. Notify the Owner’s Representative at least 24-hours prior to commencement of earthwork and at least 48 hours prior to testing.

D. The Owner’s Representative will perform observations and testsrequired to enable him to form an opinion of the acceptability of the Project earthwork. Correct earthwork that, in the opinion of the Owner’s Representative, does not meet the requirements of these Technical Specifications.

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E. Upon completion of the construction work, certify that all compacted fills and foundations are in place at the correct locations, and have been constructed in accordance with sound construction practice. In addition, certify that the materials used are of the types, quality and quantity required by these Technical Specifications. The Contractor shall be responsible for the stability of all fills and backfills constructed by his forces and shall replace portions that in the opinion of the Owner’s Representative have been displaced or are otherwise unsatisfactory due to the Contractor’s operations.

F. Finish soil grade tolerance at completion of grading:

1. Top surface of finish grade (unpaved areas): ±0.05 feet

1.04 PROJECT CONDITIONS
A. The Contractor shall assess and evaluate all site conditions and layout the work before any earthwork shall begin.

B. Protect open excavations, trenches, and the like with fences, covers and railings to maintain safe pedestrian and vehicular traffic passage.

C. Protect wetland (including setback area) as shown on the plans and as directed by the Environmental Consultant.

D. Prevent erosion of freshly graded areas during construction and until such time as permanent drainage and erosion control measures have been installed.

E. Temporarily stockpile fill material in an orderly and safe manner and in a location approved by the Owner.

F. Provide dust and noise control in conformance with Division 1 General Requirements.

G. Environmental Requirements: When unfavorable weather conditions necessitate interrupting earthwork operation, areas shall be prepared by compaction of surface and grading to avoid collection of water. Provide adequate temporary drainage to prevent erosion. After interruption, compaction specified in last layer shall be re-established before resuming work.

PART 2 PRODUCTS

2.01 SOIL MATERIALS
A. General: Provide borrow soil materials when sufficientsatisfactory soil materials are not available from on-site excavations.

B. Obtain approval of on-site soil materials and borrow materials to be used for structural fill or structural backfill from the Owner’s Representative.

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C. On-Site Structural Fill and Structural Backfill: per the County of Sacramento Construction Specifications and Geotechnical Investigation.

D. Imported Structural Fill and Structural Backfill: per the County of Sacramento Construction Specifications and Geotechnical Investigation.

PART 3 EXECUTION

3.01 GENERAL
A. Conform to Specifications as modified by the Contract Documents and the Geotechnical Investigation.

B. Surfaces to receive fill and soils to be compacted shall be free of standing water, and shall not be saturated with water.

C. Do not use explosives.

D. In asphalt concrete paved areas, neatly saw cut pavement a minimum of 24 inches beyond the limits of excavations. If edge of pavement is located within 30 inches of limit of excavation, remove pavement to existing edge.

E. Complete clearing and stripping as indicated on Drawings and in accordance with Section 02230 Site Clearing.

F. Remove existing utility lines that traverse the site as indicated on Drawings and in accordance with Section 02230 Site Clearing.

G. Scarify the upper 6 inches of the exposed subgrade-to-receive fill. The loosened soils should be uniformly moisture conditioned to one to three percent over optimum and compacted to 90 ± 2 percent relative compaction per ASTM D 1557. Compact to 95 percent in uppermost six inches of soil subgrade in pavement areas.

3.02 CONTROL OF WATER AND DEWATERING
A. Prevent surface water and ground water from entering excavations, from ponding on prepared subgrades, and from flooding the site and surrounding area. Provide dewatering equipment necessary to drain and keep excavations and site free from water.

B. Dewater during backfilling operation so that groundwater is maintained a least one foot below level of compaction effort.

C. Obtain the Owner’s Representative’s approval for proposed control of water and dewatering methods.

D. Protect subgrades from softening, undermining, washout and damage by rain or water accumulation.

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E. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations.

F. Maintain dewatering system in place until dewatering is no longer required.

3.03 WET WEATHER CONDITIONS
A. Do not prepare subgrade, place or compact soil materials if above moisture content indicated on the Geotechnical Investigation.

B. If the Owner’s Representative allows work to continue during wet weather conditions, conform to supplemental recommendations provided by the Owner’s Representative.

3.04 BRACING AND SHORING
A. Conform to California and Federal OSHA requirements.

B. Place and maintain such bracing and shoring as may be required to support the sides of the excavations for the proper protection of workmen; to facilitate the work; to prevent damage to the facility being constructed; and to prevent damage to adjacent structures or facilities. Remove all bracing and shoring upon completion of the work.

C. Be solely responsible for all bracing and shoring and, if requested by the Owner, submit details and calculations to the Owner. The Owner may forward the submittal to the Owner’s Representative, the Consulting Engineer and/or the California Division of Industrial Safety for their review. The Contractor's submittal shall include the basic design, assumed soils conditions and estimation of forces to be resisted, together with plans and specifications of the materials and methods to be used, and shall be prepared by a civil engineer or structural engineer registered in California. No excavations related to the proposed facility shall precede a response to the submittal by the Owner.

D. Be solely responsible for installing and extracting the sheathing in a manner which will not disturb the position or operation of the facility being constructed or adjacent utilities and facilities.

3.05 EXCAVATION
A. Excavate earth and rock to lines and grades shown on drawings and to the neat dimensions indicated on the Plans, required herein or as required to satisfactorily compact backfill.

B. Remove and dispose of large rocks, pieces of concrete and other obstructions encountered during excavation.

C. Where forming is required, excavate only as much material as necessary to permit placing and removing forms.

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D. Provide supports, shoring and sheet piles required to support the sides of excavations or for protection of adjacent existing improvements.

E. Excavate by hand or vacuum within drip-line of trees to remain. Do not damage trees or roots. Prevent dehydration of exposed roots. Refer to Section 02230 Site Clearing for additional tree protection requirements.

F. Replace the excavated material or any approved supplementary import material in lifts not to exceed 8 inchesin loose thickness and compact perthe Geotechnical Investigation.

3.06 REMOVAL OF EXISTING FILLS AND UNSUITABLE MATERIAL
A. Over-excavate areas of existing fills and other unsuitable material encountered during mass grading as directed by the Owner’s Representative.

B. Compensation for increased removal widths and depths that are not required by the Owner’s Representative will not be considered, except when such increase is necessary for protection of life and property as determined by and approved by the Owner.

C. The Owner’s Representative will provide written approval for each excavation prior to placement of fill. Allow adequate time after excavation and before filling for the Owner’s Representative’s review and written approval and, if necessary, time for the Owner to conduct as built survey prior to placing fill. Basis for calculating the quantity of material excavated or placed may be the difference between the grading shown on the Plan and an as built survey of the grading.

3.07 GRADING
A. Provide smooth finished surfaces within specified tolerances, compact with uniform levels or slopes between points where elevations are indicated on Drawings, or between such points and existing grades.

B. Finish ditches, gutters and swales to the sections, lines and grades indicated and to permit proper surface drainage.

C. Round tops and bottoms of slopes as indicated or to blend with existing contours.

3.08 SUBGRADE PREPARATION
A. Install underground utilities and service connections prior to final preparation of subgrade and placement of base materials for final surface facilities. Extend services so that final surface facilities are not disturbed when service connections are made.

B. Prepare subgrades under paved areas, curbs, gutters, walks, structures, other surface facilities and areas to receive structural fill.

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C. Prepare subgrades for paved areas, curbs and gutters by plowing or scarifying surface at least 6 inches below final subgrade elevations and 5-feet beyond edge of pavement unless specified otherwise by the Owner’s Representative. Uniformly moisture condition to one to three percent over optimum moisture contents. Break clods and condition surface by harrowing or dry rolling. Remove boulders, hard ribs and solid rock. Prepare earth uniform for full depth and width of subgrade.

D. Protect utilities from damage during compaction of subgrades and until placement of final pavements or other surface facilities.

E. Obtain the Owner’s Representative’s approval of subgrades prior to placing pavement.

3.09 PLACEMENT OF STRUCTURAL FILL
A. Obtain the Owner’s Representative’s approval of surface to receive structural fill prior to placement of structural fill material.

B. Place structural fill on prepared subgrade.

C. Spread structural fill material in uniform lifts not more than 8-inches in un-compacted thickness and compact.

D. Place structural fill material to suitable elevations above grade to provide for anticipated settlement and shrinkage.

E. Overbuild fill slopes, as required by the Owner’s Representative, to obtain required compaction. Remove excess material to lines and grades indicated.

F. Do not drop fill on structures. Do not backfill around, against or upon concrete or masonry structures until structure has attained sufficient strength to withstand loads imposed and the horizontal structural system had been installed.

3.10 COMPACTION AND TESTING
A. General: Control soil compaction during construction providing minimum percentage of density specified for each area classification as indicated below.

B. Percentage of Maximum Density Requirements: Compact soil to no less than the following percentages of maximum density in accordance with ASTM D 1557.

2. Lawn or Planter Areas: Compact top 6 inches of subgrade and each layer of backfill or fill material at 85 ± 2 percent relative compaction.

3. Vehicular pavements: Compact top 12 inches of subgrade and each layer of backfill or fill material at 90 ± 2 percent relative compaction. The upper 6 inches of pavement subgrade soils shall be compacted to at least 95 percent relative compaction.

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C. Moisture Control: Where subgrade or layer of soil material must be moisture conditioned before compaction, uniformly apply water to surface of subgrade, or layer of soil material, to prevent free water appearing on surface during or subsequent to compaction operations.

1. Remove and replace or scarify and air dry soil material that is too wet to permit compaction to specified density.

2. Soil material that has been removed because it is too wet to permit compaction may be stockpiled or spread and allowed to dry. Assist drying by discing, harrowing or pulverizing until moisture content is reduced to a satisfactory value.

D. Compact soils at water content specified in the Geotechnical Investigation. Aerate material if it is too wet. Add water to material if it is too dry. Thoroughly mix lifts before compaction to ensure uniform moisture distribution.

E. Perform compaction using rollers, pneumatic or vibratory compactors or other equipment and mechanical methods approved by the Owner’s Representative.

3.11 PROTECTION
A. Protection of Graded Areas: Protect newly graded areas from traffic and erosion. Keep free of trash and debris.

B. Cold Weather Protection: Protect excavation bottoms against freezing when atmospheric temperature is less than 35 degrees F.

C. Repair and re-establish gradesin settled, eroded, and rutted areasto specified tolerances.

D. Where completed compacted areas are disturbed by subsequent construction operations or adverse weather, scarify surface, re-shape, and compact to required density prior to further construction.

3.12 DISPOSAL
A. Stockpile suitable excess soil material per the Drawings and as directed by the Owner.

B. Lawfully dispose of all unsuitable excess or surplus material off-site at no cost to the Owner.

END OF SECTION

Riverside Park Regeneration Project
April 2024
Section 02315
Wetland Grading
SECTION 02315 - 1
SECTION 02315

WETLAND GRADING
PART 1 - GENERAL

1.01 SUMMARY
A. This work includes but is not limited to the following:

1. Topsoil salvage.

2. Cobble salvage.

3. Excavation to create a lowered wetland.

4. Excavation of channels.

5. Excavation and limited fill placement to create micro-depressions.

6. Placement of Bentonite layer per limits on plans.

1.02 RELATED WORK
A. SECTION 02100: Demolition
B. SECTION 02260: Landscape Grading
C. Related Attachment: Soil Sampling Report June 2022
PART 2 - PRODUCTS
A. Native Topsoil: Native topsoil generated from onsite grading activities, segregated, and stockpiled onsite, as approved by Owner’s Representative.

B. Granulated Mojave Bentonite: 3/8” minus size as provided by Protech Minerals; 17092 D St, Victorville, CA 92395, (760) 245-3441, or approved equal.

PART 3 - EXECUTION

3.01 TOPSOIL SALVAGE
A. Acceptable topsoil shall be salvaged from all disturbed areas to be cut or filled, unless directed otherwise by the Owner’s Representative.

B. Topsoil stockpiles shall be located within the limits of work and clear of any proposed construction. Stockpile sides slopes shall not exceed 2:1 and shall be a maximum vertical height of 4-8 feet unless otherwise approved by the Owner’s Representative. Stockpiles should be located a minimum distance of 15 feet from the top of excavations, or at greater distances as needed to prevent surcharging exposed slopes.

Riverside Park Regeneration Project
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Section 02315
Wetland Grading
SECTION 02315 - 2
C. Contractor shall take appropriate measures to remove any debris encountered during topsoil salvage. Depending on the amount of debris encountered, Contractor, at the direction of Owner’s Representative, shall store salvaged topsoil in discrete stockpiles based on the amount of debris encountered during excavation. This separation of stockpiles shall facilitate the subsequent placement of topsoil with a lower relativepercentage of debris as the final soil lift in areas of fill requiring a standard topsoil fill that will support plantings.

3.02 COBBLE SALVAGE
A. Native cobbles shall be salvaged from excavation of the two existing cobble piles located within the limits of the floodplain grading.

3.03 CONSTRUCTION LAYOUT AND STAKING
A. The Contractor is responsible for providing all staking and surveying needed to achieve all lines, grades and dimensions shown on Drawings for floodplain grading.

Stakes and markers shall be provided as necessary to control the work and assure construction is in conformance with the Contract Documents and as otherwise directed by the Owner’s Representative.

B. Construction Staking: Prior to commencing any earthwork for floodplain grading, the Contractor shall stake the limits of wetland grading for review by the Restoration Engineer. At a minimum, the Contractor shall stake the centerline of the channels, extents of the micro-depressions, and top of bank and toe of slope for floodplain grading.

C. The Contractor shall allow up to two (2) working days for the Restoration Engineer to review staking and note any adjustments as needed to conform to the design intent.

The Contractor shall adjust the staking as directed by the Owner’s Representative.

The Contractor shall not proceed with earthwork at a given site until staking has been adjusted and favorably reviewed by Owner’s Representative.

3.04 WETLAND GRADING
A. The contractor shall protect Russian River and existing wetlands from construction impacts and comply with all permit restrictions.

B. Prior to beginning earthwork, the Contractor shall stake the proposed wetlands and adjust as directed by the Owner’s Representative.

C. Contractor shall install and maintain silt fencing and fiber rolls during construction

Riverside Park Regeneration Project
April 2024
Section 02315
Wetland Grading
SECTION 02315 - 3
D. Excavate the wetland to lines, grades, and slopes as shown on the Drawings to accommodate the finished contours or grades. Imprint slopes as shown on plans.

E. The Contractor shall not use the constructed wetlands as an access route for excavation and grading activities. Operation of any equipment within the constructed wetlands shall be prevented except as required to match grades at the wetland grading limit or to construct micro-depressions.

F. The material to be removed is believed to consist of clays, silts, sands, concrete, debris, cobble, and unknown fill material. The Owner has no knowledge of the existence of artificial obstructions of a size or character that would necessitate the use of special equipment for their removal.

G. Excavation Support: Excavation shall be adequately shored, braced, sloped or otherwise supported in accordance with applicable laws, and as the Contractor deems necessary for safe and controlled performance of the earthwork activities. Shoring shall conform to the requirements of the Construction Safety orders issued by the State of California, Department of Industrial Relations, Division of Industrial Safety.

The Contractor shall obtain all necessary excavation permits from the Division of Industrial Safety. The Contractor shall retain the responsibility for determination, design and installation of the sloping, shoring, bracing and other measures required for safe excavations, whether these excavations are greater or less than five feet in depth. The Contractor shall be solely responsible for damages that may result from failure to provide adequate shoring and bracing.

3.05 PLACEMENT OF BENTONITE
A. Add bentonite to graded wetlands at locations shown on plans, apply at a rate of 552 CY/Acre (1.27 CY/100SF). Apply 4” layer of dry material over native soil.

B. Refer to plans for additional placement details and final grades

3.06 CONTROL OF WATER
A. The Contractor shall be aware that surface water and/or groundwater may enter the areas of excavation. The work may include excavation of material from below the groundwater surface.

B. The Contractor shall provide and operate equipment to control water as needed to keep excavations free of standing water as the Contractor deems necessary for safe and efficient execution of the Work. The Contractor shall provide equipment to remove, contain, treat and dispose of groundwater entering the excavation, as needed.

Riverside Park Regeneration Project
April 2024
Section 02315
Wetland Grading
SECTION 02315 - 4
The Contractor shall treat and contain removed water as needed to adequately remove suspended sediment prior to disposal. Dispose of water in an environmentally acceptable manner, in accordance with project permits, applicable law, and such that property is not damaged. The Contractor shall avoid settlement or damage to adjacent property from dewatering operations.

C. All fill shall be compacted to between 85 and 90 percent relative compaction at a moisture content at least 3 percent over the optimum moisture content. During all compacting operations, the Contractor shall maintain optimum moisture content so that the specified relative compaction is obtained in each lift as the lift is compacted.

Maintain moisture content uniform throughout the lift. Fill compaction by ponding and jetting will not be permitted.

3.07 TOLERANCE AND ACCEPTANCE
A. The Contractor shall endeavor to excavate and place fill to the finish grade neat lines indicated in the Drawings for wetland grading.

B. A tolerance of plus or minus one-half foot (+/- 0.1 foot) vertical deviation of final grade from these neat lines will be allowed for constructed wetlands grading. In addition, areas of contour grading shall conform to the shapes and slopes indicated in the Drawings. Grading shall be checked through ground survey, or other means acceptable to the Owner’s Representative
C. The project may not be accepted as complete if finished grade is outside the limits of these tolerances for floodplain grading. The Owner’s Representative may require the Contractor to conduct additional work at his expense to complete excavation and fill to the lines and grades indicated, within these tolerances, and conduct surveying to demonstrate conformance with the desired finished grades.

D. Excavation that is continuously over or under the finished grade is not allowed.

E. The Contractor shall be responsible for repair of slope failures within the project limits.
*** END OF SECTION ***

Riverside Park Regeneration Project Section 02721
June 2008 Aggregate Base Course
02721-1
SECTION 02721

AGGREGATE BASE COURSE
PART 1 - GENERAL

1.01 SECTION INCLUDES
A. Aggregate base course.

B. Paving aggregates.

1.02 RELATED SECTIONS
A. Section 02260 – Landscape Grading.

1.03 REFERENCES
A. ASTM C 136 - Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates; 1996a.

B. ASTM D 1557 Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN m/m3)); 1991 (Reapproved 1998).

C. ASTM D 2487 - Standard Classification of Soils for Engineering Purposes (Unified Soil Classification System); 1998.

D. ASTM D 2922 - Standard Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth); 1996.

E. ASTM D 3017 - Standard Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth); 1996.

1.04 SUBMITTALS
A. Materials Sources: Submit name of imported materials source.

B. Aggregate Composition Test Reports: Results of laboratory tests on proposed and actual materials used.

C. Compaction Density Test Reports.

1.05 PROJECT CONDITIONS

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02721-2
A. Provide sufficient quantities of aggregate to meet project schedule and requirements.

When necessary, store materials on site in advance of need.

B. Verify that survey benchmarks and intended elevations for the Work are as indicated.

PART 2 PRODUCTS

2.01 MATERIALS
A. Aggregate Base: Coarse aggregate, conforming to Section 26 of the State of California Highway Department Standards for 3/8-inch maximum Class 2 Aggregate Base.

2.02 SOURCE QUALITY CONTROL
A. If tests indicate materials do not meet specified requirements, change material and retest.

B. Provide materials of each type from same source throughout the Work.

PART 3 EXECUTION

3.01 EXAMINATION
A. Verify subgrade has been inspected, gradients and elevations are correct, and is moist but not pumping.

3.02 PREPARATION
A. Correct irregularities in subgrade gradient and elevation by scarifying, reshaping, and re-compacting.

B. Do not place aggregate on soft, muddy, or frozen surfaces.

3.03 INSTALLATION
A. Under Concrete Paving and Footings:

1. Place aggregate base to a total compacted thickness as indicated on the Project Drawings.

2. Compact to 95 percent of maximum dry density.

3.04 TOLERANCES
A. Variation From Design Elevation: Within 0.05 feet.

3.05 FIELD QUALITY CONTROL

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02721-3
A. Compaction density testing will be performed on compacted aggregate base course in accordance with ASTM D2922 and ASTM D3017.

B. If tests indicate work does not meet specified requirements, remove work, replace and retest.

C. Proof roll compacted aggregate at surfaces that will be under paving.

3.06 CLEAN-UP
A. Remove unused stockpiled materials, leave area in a clean and neat condition in accordance with Standard Provisions.

END OF SECTION

Riverside Park Regeneration Project SECTION 02811
June 2023 Irrigation
02811 - 1
SECTION 02811

IRRIGATION
PART 1 - GENERAL

1.01 SCOPE OF WORK
A. Furnish all labor, associated materials (weather specified or not), equipment and supervision required to construct the irrigation system as indicated on the Drawings and specified herein.

B. Work specified in this Section, but is not limited to the following

1. Furnish all labor, materials, and equipment necessary to install irrigation system as indicated on the Drawings and specified herein.

2. Provide protection for all existing objects or conditions designated on the Drawings to remain on the site.

3. Provide protection to prevent injury or damage to persons or adjacent properties.

C. All incidental parts, which are not shown on the plans or specified herein and are necessary to complete or modify the irrigation system shall be furnished and installed as though such parts were shown on plans or specifications. All systems shall be in satisfactory operation at the time of completion.

1. Related work specified in other sections:
a. Section 02260 - LANDSCAPE GRADING
b. Section 02315 - WETLAND GRADING
c. Section 02905 - LANDSCAPE INSTALLATION
d. Section 02970 - LANDSCAPE MAINTENANCE

1.02 QUALITY ASSURANCE
A. Contractor Qualification

1. The contractor shall demonstrate that his firm and individuals are experienced with similar projects of scope and complexity.

2. Burden of proof as to qualifications of the Contractor shall be on the Contractor; the Owner’s decision is final.

B. Conduct of Work

1. The Contractor shall maintain a skilled foreman on the site during the installation of his work. The foreman shall have the authority to act for all matters pertaining to the work.

2. The Contractor shall be responsible for coordination of his work with the other trades.

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June 2023 Irrigation
02811 - 2

3. The Contractor shall confine his operations to the areas to be improved and to the areas allotted him for materials and storage.

C. Manufacturer's Directions

1. Manufacturer's directions and detailed Drawings shall be followed in all cases where the manufacturers of articles used in this Contract furnish directions covering points not shown in the Drawings and Specifications

1.03 CODES, INSPECTIONS, LICENSES AND PERMITS
A. Identify, procure and pay for all necessary permits or certificates required to complete the Work specified. Make any and all required notifications and comply with all applicable Federal, State, and Local ordinances concerning his operations.

B. The entire installation shall fully comply with all local and state laws and ordinances and with all the established codes applicable thereto including Owner.

C. As a prerequisite of qualification to bid, the irrigation construction company shall provide verifiable documentation that such person or company is licensed by the State of California and that such licenses are considered “in good standing” by the California Contractors State License Board. “Verifiable Documentation” shall include but not be limited to submission of copies of California Contractor’s license and proof of insurance.

D. All local, municipal and state laws, rules and regulations governing or relating to any portion of this work are hereby incorporated into and made a part of these Specifications and their provisions shall be carried out by the Contractor. Nothing contained in these Specifications shall be construed to conflict with any of the above rules and regulations or requirements of the same. However, when these Specifications and Drawings call for or describe materials, workmanship, or construction of a better quality, higher standard, or larger size than is required by the above rules and regulations, the provisions of the Specifications and Drawings shall take precedence.

1.04 PROTECTION
A. Execute all Work in an orderly and careful manner with due consideration for any existing condition designated to remain. Provide protection to preserve existing items indicated to remain and to prevent injury or damage to persons or adjacent properties.

B. Use all means necessary to protect existing conditions designated to remain and adjacent properties. Avoid any encroachment on adjacent properties. In the event of damage or loss to any existing condition designated to remain or adjacent properties, immediately make all repairs and replacements necessary to the approval of the City at no additional cost to City.

C. Do not interfere with the normal traffic on roads, streets, walks, or use of adjacent properties. Provide alternate routes around closed or obstructed traffic ways as required by governing regulations.

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D. Protect existing trees per plans and specifications

1.05 EXPLANATION OF DRAWINGS
A. Visit the site and examine the existing conditions and observe the conditions under which the Work is to be performed. Notify the Landscape Architect of unsatisfactory conditions and do not proceed with the Work until unsatisfactory conditions have been corrected in a manner acceptable to the Landscape Architect. Note all conditions as to character and extent of Work involved.

B. Not all offsets, fittings, sleeves, main line, lateral, etc., which may be required are shown on plans. Carefully investigate the finish conditions affecting all of the work and plan the work accordingly furnishing such fittings; etc., as may be required to meet such conditions.

C. Drawings are diagrammatic and indicative of the work to be installed. Due to the scale of the Drawings, it is not possible to indicate all offsets, fittings, sleeves, etc., which may be required to complete the irrigation system.

D. Before proceeding with any work, the Contractor shall check and verify all dimensions, quantities, pressures and flows and shall immediately inform the Owner of any discrepancy between the drawing and/or the Specifications and actual conditions. No work shall be done in any area where there is such a discrepancy until the Owner has given written approval for the same. The Contractor shall assume full responsibility for work installed without approval.

E. Protection of Persons and Property:

1. Protect structures, utilities, sidewalks, pavements, curbs and other facilities from damage caused by settlement, lateral movement, undermining, wash out and other hazards created by this work.

2. Underground structures, including boulders that are encountered during excavation in the alignment and depth shown on the plan shall be adjusted if possible to avoid its excavation. If alignment and depth adjustment cannot be made and it becomes necessary to remove the same, the Contractor shall be paid for additional cost incurred in the handling of it.
a. The Contractor must show to the Owner the problem encountered and receive written approval before any add-on monies will be allowed.

F. Contractor shall verify prior to and during construction, that his contract documents reflect the latest revisions and change orders. Contractor shall be able to produce such documents at the request of the Owner.

G. Pipe sizes indicated on the Drawings are minimum allowable.

1.06 EXISTING CONDITIONS

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A. The Contractor shall notify members of U.S.A. two (2) working days in advance of performing any excavation work by calling the toll-free number 800-542-2444. The contractor shall verify the locations of existing utilities identified by U.S.A. with the as-built plans for the project area. The Contractor shall inform the Owner of any discrepancies before construction begins.

B. Information on the Drawings, relative to existing conditions, is approximate only.

Deviations found necessary during construction to conform to actual conditions, as approved by the Owner, shall be made without additional cost.

C. Where it is necessary to excavate in areas of existing utilities, the contractor shall pothole to confirm exact locations of existing utilities. Exercise extreme care in excavating and working near existing utilities. The Contractor shall be responsible for all damages to existing utilities that are caused by his operation or neglect. In case of interruption of utilities caused by the contractors operations or neglect, the contractor shall be responsible to have the utilities in service as soon as possible and in no case shall the interruption be longer than a twenty-four (24) hour period. In such case that the contractor needs more than a twenty-four (24) hour period, prior approval shall be acquired from the Owner in writing.

D. Excavation in proximity to existing trees shall conform to the Owner’s Tree Protection Measures and to contract documents. At no time shall excavation in proximity to existing trees begin without prior approval of the Urban Forester.

E. Before proceeding with any work, the Contractor shall check and verify all site conditions and shall immediately inform the Owner of any discrepancy between the Contract Documents and actual conditions. No work shall be done in any area where there is such a discrepancy until the Owner has given written approval for the same.

The Contractor shall assume full responsibility for work installed without approval. .

1.07 SUBMITTALS
A. Material List
The irrigation system shall be installed with components as specified in contract documents or approved equal. Another (single line) manufacturer may be substituted provided they have received an “approved equal” status prior to bidding based on the substitution process established herein and in the General Conditions.

1. Cut sheets shall be submitted for all specified products, including substitution requests.

2. Substitutions shall be submitted a minimum of five (5) days prior to bid date and shall include supporting documentation that specifies the equality of the product to that specified.

3. The contractor shall submit six (6) copies of the irrigation submittal package to the Landscape Architect a minimum of two (2) weeks prior to start of work. Each submittal package shall include:

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a. A title sheet on the Contractors letterhead identifying the project name, date of submittal, Contractor name, address, phone number, cell phone number and email address and a listing of products with manufacturer’s name and model number included in the submittal package.
b. The Contractor shall submit Manufacturer’s cut-sheets for each product being used on the project, clearly identifying with highlighter pen or other marking device the manufacturer and model number of products to be used including, but not limited to the following:

1.) Nibco Isolation Valve

2.) Hunter Battery Operated Controller

3.) Watermark Battery Operated Soil Moisture Kit

4.) Hunter Battery Operated Remote Control Valve

5.) Rain Bird Quick Coupler Valve

6.) Carson Irrigation Valve Boxes

7.) Salco Direct Connect Emitter Manifold

8.) Salco Check Valve ¼”

9.) Salco Emitter, 1 GPH

10.) PVC Schedule 40 Main Line

11.) PVC Class 200 Main Line and Lateral Line

12.) ½”Polyethylene Drip Tubing

13.) PVC Schedule 40 Sleeves

14.) Moisture Sensor Wire

15.) Water Proof Wire Connectors

16.) Valve Identification Tags

4. The contractor shall provide additional submittals as required for specified products not listed above but which are used on site.

5. Equipment or materials installed or furnished without prior approval of the Landscape Architect shall be rejected and the Contractor shall be required to remove such materials from the site at his own expense.

6. Approval of any item, alternate or substitute indicates only that the product or products apparently meet the requirements of the Drawings and Specifications based on the information or samples submitted.

1.08 RECORD DRAWINGS
A. The Contractor shall furnish reproducible “as-built” drawings prior to the Final Completion Inspection.

1. Record Drawings shall identify the location of the items installed, dimensioned from two (2) permanent points of reference as follows:
a. Nibco Isolation Valve(s)
b. Hunter Battery Operated Controller and Valve Assembly c. Watermark Battery Operated Soil Moisture Module and Sensors d. Rain Bird Quick Coupler Valve

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e. Drip Transitions
f. Salco Direct Connect Emitter Manifold
g. Diagrammatic layout of PVC Main Line dimensioned from two (2) permanent points of reference at one hundred (100) foot intervals and at changes in direction.
h. Sleeving
i. Other related equipment as directed by the Owner and/or Landscape Architect.

B. The Contractor shall deliver to the Landscape Architect the Record Drawings on reproducible and digital media to the Owner five (5) working days prior to the Final Completion Inspection. Delivery of these shall not relieve the Contractor of the responsibility of furnishing required information that may be omitted from the Record Drawings. Reproducible plans or digital media may be obtained for said use from the Landscape Architect.

C. HYDROZONE CHARTS

1. The hydrozone chart shall be submitted to the City for review and approval five (5) working days prior to Final Completion Inspection.

2. The Contractor shall be responsible to submit to the City one (1) hydrozone chart identifying valve locations, valve numbers, moisture sensor locations and irrigation schedule.

3. The hydrozone chart shall be a full-scale drawing of the approved record drawing.

4. When completed and approved, the chart shall be hermetically sealed between two (2) pieces of plastic, each piece being a minimum ten (10) mils thick.

1.09 OPERATION AND MAINTENANCE MANUALS
A. Contractor shall furnish two (2) Operations and Maintenance Manuals in binders of equipment used on the project. Manuals shall include a complete signed copy of the irrigation submittal package, product dimensional diagrams and parts breakdown and operation manuals. Binders shall have a table of contents identifying each product section. The following equipment shall be included in the Operation and Maintenance Manual:

1. Nibco Isolation Valve

2. Hunter Battery Operated Controller

3. Watermark Battery Operated Soil Moisture Kit

4. Hunter Battery Operated Remote Control Valve

5. Rain Bird Quick Coupler Valve

6. Salco Emitter Manifold

7. Salco ¼” Check Valve

8. Signed Guarantee Statement for Irrigation System
B. Five (5) working days prior to Final Completion Inspection, the above-mentioned submittals corrected and approved record drawings, hydrozone charts, operations and

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maintenance manuals and supplemental information, if requested, shall be turned over to the City and the Contractor shall obtain signed verification that such has occurred

1.10 EQUIPMENT TO BE FURNISHED
A. Supply as a part of this Contract the following tools:

1. Two (2) sets of special tools required for removing, disassembling and adjusting each type of sprinkler, valve and valve box supplied on this project.

2. Two (2) quick coupler keys and matching hose swivels for each type of quick coupling valve installed.

3. Two (2) isolation valve opening keys

4. Two (2) keys for backflow enclosure locksets
B. Locksets shall be keyed per Owner’s specifications.

C. Five (5) working days prior to Final Completion Inspection the Contractor shall hand over equipment to the City and shall obtain signed verification that such has occurred.

1.11 PRODUCT DELIVERY, STORAGE AND HANDLING
A. Handling of PVC and Polyethylene Pipe and Fittings: The Contractor is cautioned to exercise care in handling, loading, unloading, and storing of PVC and Polyethylene pipe and fittings. All PVC and Polyethylene pipe shall be transported in a vehicle that allows the length of pipe to lie flat so as not to subject it to undue bending or concentrated external load at any point. Any section of pipe that has been dented or damaged will be discarded and if installed replaced with new.

1.12 GUARANTEE FOR IRRIGATION SYSTEM
A. The guarantee for the irrigation system shall be made in accordance with the form shown on the following page. A copy of the guarantee form shall be included in the operations and maintenance manual. The guarantee form shall be re-typed onto the Contractor's letterhead and contain the following information:

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GUARANTEE FOR IRRIGATION SYSTEM
We hereby guarantee that the irrigation system we have furnished and installed is free from defects in materials and workmanship, and the work has been completed in accordance with the Drawings and Specifications, ordinary wear and tear and unusual abuse or neglect excepted. We agree to repair or replace any defects in material or workmanship, which may develop during the period of one (1) year from date of final acceptance, and also to repair or replace with originally specified materials. Any damage resulting from the repairing or replacing of such defects shall be replaced and repaired by the contractor at no additional cost to the Owner. We shall make such repairs or replacements within a 48-hour period, after receipt of written notice. In the event of our failure to make such repairs or replacements within said period after receipt of written notice from the Owner, we authorize the Owner to proceed to have said repairs or replacements made at our expense and we will pay the costs and charges therefore upon demand.

PROJECT: ___________________________________________________________ LOCATION:___________________________________________________________ SIGNED:_____________________________________________________________ ADDRESS:___________________________________________________________ PHONE:_____________________________________________________________ DATE OF ACCEPTANCE:_______________________________________________

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PART 2 - PRODUCTS

2.01 MATERIALS
General: Use only new materials of brands and types noted on the Drawings specified herein or approved equals.

A. Backfill Material

1. Existing site material, as approved by the Owner, shall be used for backfill material. Backfill material shall be free from organic materials, large clods of earth or rocks larger than one (1) inch diameter, trash, debris, rubbish, broken cement, asphalt material or other objectionable substances.

2. Sand backfill shall be a fine, granular sand material backfill containing no foreign matter larger than one-half (1/2) inch in size.

B. Drainage Fill Material

1. Drainage fill material shall be three-quarter (3/4) inch washed, hard and durable, fragments of screened or broken stone or gravel.

C. Irrigation Pipe Sleeving

1. Irrigation Sleeve 6” and smaller shall be PVC Schedule 40 with solvent-weld joints. Pipe shall be made from NSF approved Type I, Grade I, PVC compound conforming to ASTM standard D1784 or latest revision. All pipes shall meet requirements set forth in Federal Specification PS-21-70. (Solvent-weld Pipe) D. PVC Pressure Main Line Pipe and Fittings.

1. Pressure main line piping for sizes two and one half (2-1/2) inches and larger shall be PVC Class 315 with solvent weld joints. Pipe shall be made from an NSF (National Sanitation Foundation) approved Type I, Grade I, PVC compound conforming to ASTM resin specification D1785. All pipes shall meet requirements set forth in Federal Specification PS-21-70. (Solvent-Weld Pipe).

2. Pressure main line piping for sizes two (2) inch and smaller shall be PVC Schedule 40 with solvent-weld joints. Pipe shall be made from NSF approved Type I, Grade I, PVC compound conforming to ASTM resin specification D1785.

All pipes shall meet requirements set forth in Federal Specification PS-21-70. (Solvent-Weld Pipe).

3. PVC main line fittings shall be PVC Schedule 40 solvent-weld fittings, Type I cell classification 12454 conforming to ASTM Standard D 1784 or PVC Schedule 80 solvent-weld fittings, Type I cell classification 12454 conforming to ASTM Standard D 1784

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4. All PVC main line pipe shall be marked continuously and permanently with the following information: Manufacturer's name, nominal pipe size, schedule or class of pipe, pressure rating in P.S.I. extrusion, NSF approval and date of extrusion.

5. All fittings shall bear the manufacturer's name or trademark, material designation, size, applicable I.P.S. schedule and NSF seal of approval.

E. PVC Temporary Main Line and Lateral Lines.

1. Temporary pressure main line piping and lateral piping shall be PVC Class 200 with solvent weld joints. Pipe shall be made from an NSF (National Sanitation Foundation) approved Type I, Grade I, PVC compound conforming to ASTM resin specification D1785. All pipes shall meet requirements set forth in Federal Specification PS-21-70. (Solvent-Weld Pipe

2. Temporary pressure main line and lateral line fittings shall be PVC Schedule 40 solvent-weld fittings, Type I cell classification 12454 conforming to ASTM Standard D 1784 or PVC Schedule 80 solvent-weld fittings, Type I cell classification 12454 conforming to ASTM Standard D 1784 F. Solvent Cements and Primers

1. All solvent cements shall meet ASTM D 2464 for PVC and be of the proper body (viscosity) for the size of pipe, fittings and valves being installed.

2. All primers shall meet ASTM F 656

3. Solvent Cements and Primers shall conform to the State of California Air Quality Control mandate for Low Volatile Organic Compounds.

G. Detectable Marking Tape

1. Detectable marking tape shall be two (2) inches in width and have a 20-gauge solid aluminum foil core.

2. For irrigation water the tape color and legend combination shall be in accordance with A.P.W.A. or local requirements. The color shall be Blue. The legend shall read “Caution Irrigation Line Buried Below”.

3. For potable water the tape color and legend combination shall be in accordance with A.P.W.A. or local requirements. The color shall be Blue. The legend shall read “Caution Potable Water Line Buried Below”.

H. Concrete

1. ASTM Class B concrete shall be used for fill concrete.

2. Concrete shall have a 3,500-PSI compressive strength at 28 days and shall have maximum water to cement and dispersing agent ration of 56%. Concrete shall have

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a minimum cement content of 470 lbs. (5 bags) per cubic yard concrete. Nominal maximum size of coarse aggregate shall be three-quarter (3/4) inch.

I. PVC Threaded Nipples:

1. PVC Schedule 80 nipples shall be produced from extruded stock grade PVC compounds. No molded nipples shall be used.
a. PVC Schedule 80 nipples shall be made from NSF approved PVC compound conforming to ASTM D1784, Cell Classification 12454B
J. Gate Valves

1. Gate valves shall be of the same type, manufacturer and sizes as indicated on the Drawings and as specified herein or approved equal.

2. Gate valves 2" and smaller shall be 125 lb. SWP bronze gate valve with threaded ends. Gate Valves shall be equipped with a cast bronze cross handle. No pot metal handles shall be used.

K. Quick Coupling Valves

1. Quick coupling valves shall have a brass two-piece body designed for working pressure of 150 P.S.I. with a locking rubber cover and operable with quick coupler key. Quick Coupler Valve Key and Hose Swivel shall be the size and shown on the Drawings
L. Battery Operated Soil Moisture Sensor Kit

1. Soil Moisture Sensors shall be of the same type, manufacturer and sizes as indicated on the Drawings.

2. Wiring between the soil moisture sensors and battery operated monitor shall be two (2) wires #18 AWG or larger per manufacturer’s specifications.

M. Battery Operated Control Valve Assemblies

1. Battery operated control valves shall be of the same type, manufacturer and sizes as indicated on the Drawings

2. Battery operated control valves shall be equipped with a DC Latching Solenoid.

3. Battery operated control valve assemblies shall be equipped with a Wye Filter and forty (40) PSI Pressure Regulator

4. Battery operated control valves shall be compatible with battery operated controller
N. Identification Tags

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1. Valve tags shall be manufactured from polyurethane Behr Desopan, with a reinforced attachment hole and will be 2-1/4” x 2.3/4” in size. Valve identification tags shall be yellow in color, double sided with the Valve designation stamped on both sides.

O. Battery Operated Controller

1. Battery operated controller shall be of the same type, manufacturer and sizes as indicated on the Drawings

2. Battery operated controller shall be compatible with battery operated soil moisture sensors.

3. Battery Operated Controller shall be equipped with one (1) DC latching solenoid P. Backflow Preventer

1. Backflow Preventer is of the size and type shown on the Drawings.

2. Backflow Preventer shall be enclosed in a stainless steel, vandal-resistant enclosure.

3. Backflow Preventer enclosure shall be equipped with a lockset keyed to Owner specifications.

Q. Direct Burial Emitter Manifold

1. Direct Burial Emitter Manifold shall be of the same type, manufacturer and sizes as indicated on the Drawings

2. Direct Burial Emitter Manifold shall be equipped with pressure compensating emitters and spring loaded check valve. The pressure compensating emitters shall have a working pressure of 5 PSI to 50 PSI and a flow of 1 GPH per emitter. The spring loaded check valve shall be capable of holding back nine and one quarter (9-1/4) feet of head.

R. Sub-Surface Capillary Irrigation Tubing

1. Sub-surface capillary irrigation tubing shall be of the same type, manufacturer and sizes as indicated on the Drawings

2. Sub-surface capillary irrigation tubing shall include a polyethylene dripperline, dispersion tape ad capillary fiber.

3. Flow rate for the sub-surface capillary irrigation tubing shall be 0.617 gallons per 100 feet per minute.

4. Pre-installation soil testing shall be per manufacturer’s specifications.

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S. Valve Boxes

1. Remote Control Valve Boxes shall be green rectangular valve boxes 17-3/8” x 23- 7/8” x 12”, Carson model 1220-4 with a T-cover and Bolt-Down Loc Kit or approved equal.

2. Remote Control Valve Box Extensions shall be of the same manufacturer of the valve box or approved equal.

3. Quick Coupler Valve Boxes shall be green round valve boxes 11-1/2” (I.D.) diameter by 10-1/4” high, Carson model 910-10 or approved equal. Quick Coupler Valve box covers shall be green T-cover with Bolt-Down Loc Kit or approved equal.

4. Drip Transition Valve Boxes shall be green round valve boxes 7-5/8” (I.D.) diameter by 9-1/16” high, Carson model 708-4 or approved equal.

5. Wire mesh cloth shall be ¼” galvanized or approved equal.

PART 3 - EXECUTION

3.01 INSPECTION OF SITE
A. Site Conditions

1. The irrigation system layout is diagrammatic and scaled dimensions are approximate. The Contractor shall in the field establish locations of piping, emitters, subsurface irrigation, valves, and other components at time of installation... Check and verify all site dimensions and notify the Owner if site conditions have changed from those specified in the drawings and here within.

2. The Contractor shall check and verify site water service and shall submit written documentation stating field verified static pressure to the Landscape Architect prior to the start of work.

3. The Contractor shall carefully check all grades to satisfy him that he may safely proceed before starting work on the irrigation system.

4. The contractor shall obtain permits and call for inspections as required by local codes and regulation. Installation of irrigation components shall conform to local codes, accepted construction practices and best management practices per the Irrigation Association.

B. Timing

1. The successful bidder must agree to commence work on or before a date to be specified in a written “Notice to Proceed” and to fully complete the work within the number of calendar days shown on his bid form.

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2. Coordinate time schedule with Owner’s representative and concurrent work performed by others in separate contracts.
.

3.02 IRRIGATION SCHEDULE
A. The Contractor shall be responsible to work with the City and their representative to establish the irrigation schedules for each hydrozone prior to planting.

B. The irrigation system is intended to be temporary for plant establishment. Since plants are natives, the irrigation schedules shall provide only the water needed for healthy plant growth but not so much as to make the plants dependent on a supplemental water source.

C. The irrigation system is designed to operate with soil moisture sensors in addition to traditional programming of controllers. It shall be the Contractor’s responsibility to coordinate the irrigation schedule to supply an adequate amount of water to the plant without exceeding the hydraulic parameters of the project. See the irrigation plan for more information.

3.03 PREPARATION
A. Physical Layout

1. Locations on Drawings are diagrammatic and approximate only. The Contractor shall change and adjusted locations as shown on drawings as necessary and as directed by Landscape Architect to meet existing conditions and obtain complete water coverage.

2. Prior to installation, the Contractor shall stake out locations of water meter, backflow preventer, control valves and drip transitions for review and approval by the Landscape Architect.

3. The Contractor shall stake out locations of plant material prior to installation for review and approval by the owner. Irrigation emission devices shall be installed after approval of plant layout. If equipment is incorrectly located without said approval, it shall be the Contractor's responsibility to relocate emission devices to approved locations without additional cost to the Owner.

4. The Contractor shall install and extend the system as shown on the Drawings, and as necessary to carry out the intent of the Drawings and Specifications.

3.02 WATER SERVICE
A. Water Supply

1. Coordinate with the Owner the water supply point of connection as indicated on the Drawings. Field verify connection location and size. Notify the Owner of any discrepancies prior to beginning construction.

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3.03 INSTALLATION
A. Trenching

1. Irrigation Permanent Main
a. Trench irrigation water main line to a sufficient depth and width to permit proper handling and installation of pipe and fittings and to provide a minimum of eighteen (18) inches of cover.
b. Trench to depth required to provide four (4) inches of sand bedding below piping and above piping.

2. Irrigation Temporary Main and Lateral Line
a. Trench PVC pipe to a sufficient depth and width to permit proper handling and installation of pipe and fittings and to provide a minimum of four (4) to six (6) inches of cover.

3. PE Drip Tubing
a. Trench PE drip tubing to a sufficient depth and width to permit proper handling and installation of pipe and fittings and to provide a minimum of two (2) inches of cover.

4. Fill to match adjacent grade elevations and relative soil density with approved fill material. Place and compact fill in layers not greater than six (6) inch depth.

5. Overfill the trenches with approved fill materials. Level, compact and water settle.

Should settlement occur, refill and compact as needed.

6. Dig trenches straight and support pipe continuously on bottom of trench. Lay pipe to an even grade.

7. Excavate trenches, install piping, and fill during the same working day. Do not leave open trenches or partially filled trenches open overnight.

8. Trench width shall be as needed to provide a minimum four (4) inch horizontal clearance between pipes and between pipes and edges of trench.

9. No pipe shall be laid directly over another pipe.

B. Backfilling

1. The trenches shall not be backfilled, except for center loading, until all required tests are performed. All debris shall be removed prior to placement of backfill.

Trenches shall be carefully backfilled with the materials approved for backfilling

2. Backfill potable water main line and permanent irrigation main line with a minimum of 4” of sand below piping and 4” of sand above the piping.

3. Backfill shall be mechanically compacted to a dry density equal to adjacent undisturbed soil in landscaped areas. Backfill shall conform to adjacent grades without dips, sunken areas, humps or other surface irregularities.

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4. Overfill with approved excavated or imported fill materials free of lumps or rocks larger than one (1) inch in any dimension. Level, compact and water settle.

Should settlement occur, refill and compact as required.

5. Trenches shall be inspected and approved by the Landscape Architect prior to backfilling.

C. Sleeving

1. Sleeving shall be installed for irrigation pressure main line pipe when crossing bridge.

2. Sleeving shall be installed for main line, lateral line and drip tubing when crossing beneath crushed rock paths.

3. Irrigation pipe sleeves shall be sized to easily accommodate as called for in the drawings leaving a minimum of 25% void space inside sleeve.

4. The contractor shall be responsible to verify sleeving based on field verification of the number and size of pipes crossings.

5. Sleeves shall have both ends capped during installation to prevent dirt and debris from entering the sleeve.

6. Identify location of sleeve ends from two permanent points of reference and show on record drawings.

D. PVC Pipe

1. Routing of irrigation pipe as indicated on the Drawings is diagrammatic. Install lines and various assemblies to conform to the details shown on the drawings.

2. Install irrigation main line approximately two (2) feet from crushed rock path.

3. Install all assemblies specified herein in accordance with respective detail. In absence of detail Drawings or specifications pertaining to specific items required to complete work, perform such work in accordance with best standard practice with prior approval of the Landscape Architect.

4. PVC pipe and fittings shall be thoroughly cleaned of dirt, dust and moisture before installation. Installation shall be as recommended by the pipe and fitting manufacturer.

5. PVC pipe shall be installed so that there will be a small amount of excess length in the pipe to compensate for contraction and expansion of the pipe. This shall be accomplished by "snaking" the pipe in the trench during installation.

6. Center load pipe with small amounts of backfill to prevent arching and slopping under pressure. Leave joints exposed for inspection during testing.

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7. No water shall be permitted in the pipe until trench inspections have been completed and a period of at least 24 hours has elapsed for solvent weld setting and curing.

8. Plastic to metal connections shall be made with plastic male adapters and female metal adapter, hand tightened, plus one turn with a strap wrench. Teflon tape or approved equal shall be used on all threaded PVC to metal joints.

9. Solvent Weld Joint: Solvent weld pipe ends using solvent recommended by pipe manufacturer only.

10. Threaded joints shall be wrapped with Teflon tape as per manufacturer’s instructions.

11. Flush all debris out of pipe prior to installing valves and heads.

12. In changing main line and lateral pipe depth, 45° elbows shall be used.

13. Install three (3) inch detectable tape 6”-28” below finish grade along the entire length of the main line run, including main line branches.

E. Line Clearance

1. Irrigation lines shall have a minimum horizontal and vertical clearance of four (4) inches from each other. Parallel lines shall not be installed directly over one another.

2. Horizontal and vertical clearance of irrigation lines from lines from other trades shall be as per local codes and regulations.

F. Gate Valves

1. Install gate valves as per details and manufacturer's specifications.

2. All gate valves shall be installed plumb and vertical with the valve accessible with proper tools.

3. Install where shown on Drawings. Locate, in valve boxes for easy access unless otherwise noted on drawings.

4. Install one gate valve per valve box. Provide extension units as required as per details. Install valve boxes in shrub planting areas whenever possible.

G. Quick Coupling Valves

1. Install as per details and manufacturer's specifications.

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2. All quick coupling valves shall be installed plumb and vertical with the valve accessible and removable with proper tools. Valves shall be located adjacent to foot path.

3. Install where shown on Drawings. Locate, in valve boxes for easy access.

4. Install one quick coupling valve per valve box. Provide extension units as required. Install valve boxes in shrub planting areas whenever possible.

5. Wherever possible, install quick coupler valves, gate valves and remote control valves in groupings not to exceed a maximum of three (3) valves per group for ease of long term maintenance.

H. Battery Operated Remote Control Valves

1. Install as per details and manufacturer's specifications.

2. Remote control valves shall be installed plumb and vertical with the valve accessible and removable with proper tools. Valves shall be located adjacent to foot path.

3. Install where shown on Drawings. Locate, in valve boxes for easy access.

4. Install one quick coupling valve per valve box. Provide extension units as required. Install valve boxes in shrub planting areas whenever possible.

5. Wherever possible, install quick coupler valves, gate valves and remote control valves in groupings not to exceed a maximum of three (3) valves per group for ease of long term maintenance.

I. Battery Operated Controller

1. Install as per details and manufacturer's specifications.

2. Install battery operated controller in same remote control valve box as it controls.

J. Valve Boxes

1. Install valve boxes as per details unless otherwise noted on plans.

K. Direct Burial Emitter Manifold

1. Install emitter manifold directly to ½” PE drip tubing using ¼” barb check valve.

2. Stake emitter manifold at connection to PE drip tubing.

3. Flush debris from ½” PE tubing prior to installing emitter manifold

4. Install one emitter manifold per plant.

L. Sub-Surface Capillary Irrigation Tubing

Riverside Park Regeneration Project SECTION 02811
June 2023 Irrigation
02811 - 19

1. Submit soil test to manufacturer a minimum of four (4) weeks prior to ordering and installation.

2. Install sub-surface capillary irrigation tubing on 1-1/4” PE supply line using grommets available through manufacturer of product. Drill bit for grommets per manufacturer’s specifications.

3. Install flush valve and air vent per manufacturer’s specifications.

3.04 INSPECTION AND OBSERVATION SCHEDULE
A. Trench Inspection and Main Line Pressure Test

1. The Contractor shall not backfill PVC Schedule 40 and PE pressure main line trench, except center loading until an open trench inspection has been conducted and approved.

2. Test all pressure lines and connections to quick coupler valves and valves under hydrostatic pressure of 120 pounds per square inch.

3. Sustain pressure in pressure lines for not less than twenty-four (24) hours. If leaks develop, replace joints and repeat test until entire system is proven watertight.

4. All hydrostatic tests shall be made only in the presence of the Owner. No pipe shall be backfilled, except for center loading, until it has been observed, tested and approved in writing by the Owner. Should any work be covered up before such observation and tests are completed, the Contractor shall, at his own expense, uncover the work; and after it has been observed, tested and approved, he then shall make all repairs with such materials as required to restore all work disturbed to original and proper condition.

5. Furnish necessary force pump and all other test equipment.

B. Direct Burial Dripline

1. Finish grade shall be approved prior to dripline.

2. Plant locations shall be identified for approval by owner and Landscape Architect. prior to emitter installation

3. Furnish all materials and perform all work required to correct any inadequacies of coverage due to deviations from the Drawings or where the system has been willfully installed as indicated on the Drawings, when it is obviously inadequate without bringing this to the attention of the Owner.

C. Capillary Subsurface Irrigation Tubing

Riverside Park Regeneration Project SECTION 02811
June 2023 Irrigation
02811 - 20

1. Install capillary subsurface irrigation tubing on willow layers as directed by project engineer.

2. Manually flush tubing lines as per manufacturer’s specifications.

3. Test system prior to backfill for full coverage of planted area D. Soil Moisture Sensors

1. Install per manufacturer’s specifications

2. Adjust to maintain appropriate soil moisture for the plant material being irrigated.

3. Check daily for first two (2) week that soil moisture levels are optimum for healthy plant growth.

E. Substantial Completion Inspection

1. The Contractor shall operate each system in its entirety for the Owner at time of substantial completion. Any items deemed not acceptable shall be reworked to the complete satisfaction of the Owner.

2. The contractor shall provide a field workshop for owner, Landscape Architect and project engineer to review irrigation equipment operations and maintenance.

3. When the Contractor is of the opinion that the work is substantially complete, submit a written request for review of substantial completion. a. Prior to final field observation, all previous punch list items shall be completed and verified by field observation.
b. The Landscape Architect of record shall conduct a Substantial Completion Inspection and shall provide a Certificate of Substantial Completion to the Owner.
c. The certificate shall specifically indicate that the irrigation was installed per contract documents along with a list of any observed deficiencies. d. If the project was not determined substantially complete at the first review as described above then the contractor shall correct deficiencies within ten (10) days and upon completion of deficiencies shall request the second compliance review.

F. Final Completion Inspection

1. Definition: Final completion shall not occur until installation required by the contract documents is one hundred percent (100%) complete as determined by the Owner.

2. When the Contractor is of the opinion that the work is finally complete and the list of deficiencies generated during the substantial completion review is corrected, submit a written request for review of final completion. a. The Contractor shall provide the Certificate of Substantial Completion with the written request for review of final completion.

Riverside Park Regeneration Project SECTION 02811
June 2023 Irrigation
02811 - 21

3.05 TEMPORARY REPAIRS
A. Owner reserves the right to make temporary repairs as necessary to keep the irrigation system in operating condition. The exercise of this right shall not relieve the Contractor of his responsibilities under the terms of the guarantee as herein specified.

3.06 CLEAN-UP
A. Clean up shall be made as each portion of work progresses. Refuse and excess dirt shall be removed from site. All walks and paving shall be broomed or washed down, and any damage sustained to the work of others shall be repaired to original conditions acceptable to the Owner.

B. No site visits shall commence without all items noted in previous Observation Reports, either completed or remedied, unless such compliance has been waived.

Failure to accomplish punch list tasks or prepare adequately for desired observations shall make the Contractor responsible for reimbursing the Engineer at his current billing rates per hour, plus transportation costs.

C. No Final Completion Inspection shall commence without Record Drawings. In the event the Contractor calls for an observation without Record Drawings, without completing previously noted corrections or without preparing the system for observations, he shall be responsible for reimbursing the Owner at the hourly rate in effect at the time of the observation (plus transportation costs) for the inconvenience.

No further observations will be scheduled until this charge has been paid.

END OF SECTION

Riverside Park Regeneration Project Section 02905
August 2023 Landscape Installation
02905-1
SECTION 02905

LANDSCAPE INSTALLATION

PART I - GENERAL

1.01 SCOPE OF WORK
A. Furnish all labor, material, equipment and services necessary to provide all landscape work, complete in place, as indicated on Drawings and specified herein.

Work specified in this Section, but is not limited to the following:

1. Hydroseed application

2. Tree seedling and shrub planting

3. Brush layer plantings
B. Related Work Specified in Other Sections

1. SECTION 02811 – IRRIGATION

2. SECTION 02970 - LANDSCAPE MAINTENANCE

1.02 QUALITY ASSURANCE
A. Source Quality Control

1. Submit documentation to the City at least sixty - (60) days prior to start of planting that all plant material has been ordered. Arrange procedure for observation of plant material with the City at time of submission.

2. Plants shall be subject to observation and approval of the City upon delivery for conformity to specifications. Such approval shall not impair the right of observation and rejection during progress of the work.

1.03 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Delivery

1. The Contractor, upon request by the City, shall provide receipts, delivery tickets, load tickets, etc. of all items delivered to the job site to verify products and total quantities.

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2. Deliver plants with legible identification labels.

a. Label tree seedlings.
b. State correct plant name and size indicated on plant list. c. Use durable waterproof labels with water-resistant ink, which will remain legible for at least sixty (60) days.

3. Protect plant material during delivery to prevent damage to root ball or desiccation of leaves.

4. The Contractor shall notify the City forty-eight (48) hours in advance of delivery of all plant materials for observation either at the site or at the local nursery.

B. Storage

1. Store plant material in shade and protect from weather.

2. Maintain and protect plant material. Contractor shall be responsible for replacement of material due to theft or vandalism.

1.04 JOB CONDITIONS
A. Planting: Perform actual planting only when weather and soil conditions are suitable in accordance with locally accepted practice.

B. Scheduling: Install tree seedlings before hydroseed application.

C. Protect work and materials from damage due to construction operations by other contractors and trades and by vandalism. Maintain protection during installation and maintenance period.

1.05 SAMPLES AND TESTS
The City reserves the right to take and analyze samples of materials for conformity to specifications at any time. The Contractor shall furnish samples upon request by City.

Rejected materials shall be immediately removed from the site at Contractor's expense.

Cost of testing of materials not meeting specifications shall be paid by the Contractor.

1.06 GUARANTEE AND REPLACEMENT
A. Guarantee: All plant material and other materials installed under the Contract shall be guaranteed against any and all poor, inadequate or inferior materials and/or workmanship for a period of one (1) year. Any plant found to be dead or not in a satisfactory or healthy condition due to faulty materials, workmanship, or improper maintenance (during contracted maintenance period) as determined by the City, shall be replaced by the Contractor at his expense.

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B. Replacement: Any materials found to be dead, missing or not in a satisfactory or healthy condition during the maintenance period shall be replaced immediately. The City shall be the sole judge as to the condition of material. Material to be replaced within the guarantee period shall be replaced by the Contractor within fifteen (15) days of written notification by the City. All replacement materials and installation shall comply with the Drawings and Specifications.

PART 2 - PRODUCTS

2.01 GENERAL
All materials shall be of standard, approved and first-grade quality and shall be in prime condition when installed and accepted. Any commercially processed or packaged material shall be delivered to the site in the original unopened container bearing the manufacturer's guaranteed analysis. The Contractor shall supply the City with a sample of all supplied materials accompanied by analytical data from an approved laboratory source illustrating compliance of bearing the manufacturer's guaranteed analysis.

2.02 PRODUCTS
A. Seed Mix

1. California custom native grass mixes for wetland, upland, transitional, and erosion control seeds, and forbs available from Hedgerow Farms 530-662-6847 or approved equal. Required pure live seed and germination rates shown on plans.

2. Seed shall be weed free, fresh, re-cleaned, Grade A, new crop consisting of the percentages of mix as specified. Seed shall be labeled in accordance with the U.S. Department of Agriculture Rules and Regulations under the Federal Seed Act presently in effect.

3. Seed shall be provided from and mixed by a certified dealer. Seed mixture shall be labeled with manufacturer's guaranteed analysis, germination rate and purity rate.

B. Wood Cellulose Fiber Mulch (Hydromulching)

1. Mulch shall be especially prepared wood cellulose fibers with no growth or germination inhibiting factors, and dyed green to facilitate visual metering during application. Mulch shall be equal to Profile Flexterra HP-FGM (High Performance Flexible Growth Medium). Wood cellulose fiber shall have additional characteristics of dispersing rapidly in water to form homogeneous slurry and remain in such state when agitated in the hydraulic mulching unit.

2. When applied, the fiber matrix must form an absorptive mat but not a plant inhibiting membrane, which will allow moisture to percolate into the underlying soil. The fiber matrix shall be supplied compressed in packages containing fifty

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August 2023 Landscape Installation
02905-4
(50) pounds of material having an equilibrium air dry moisture content at time of manufacture of 12% plus or minus 2.

D. Plant Material

1. The plant material indicated on the Drawings by the listed names shall conform to "Standard Plant Names", second edition, except for names not covered there in, the established customs of the nursery trade is followed. All plants shall be true to name, above one of each bundle or lot shall be tagged with the name and size of the plant, in accordance with the standards of practice recommended by the American Association of Nurserymen. All plant materials shall meet the specifications of Federal, State and County laws, requiring observation for plant diseases and insect infestations. Plants shall be symmetrical, typical for variety and species, sound, healthy, vigorous, free from plant diseases, insect pests or other eggs, and shall have healthy, normal root systems, while filling their containers, but not to the point of being root bound. Use only plant materials that are first class representative of the species and cultivars specifies and that conform to all State and local laws governing the sale, transportation and observation of plant materials. Plants shall have straight, single trunks, unless otherwise specified on the plans. Those specified to be multi-trunk shall have at least three (3) main leaders from the base. Any and all plants that have any encircling roots (not root bound) shall have root balls lightly slashed on a minimum of three (3) sides to stop encircling root growth. The height and spread of all plant materials shall be measured with branches in their normal position.

Sizes of plants shall be as stated on the plant list and shall not have been overgrown in the containers so as to have become root bound.

2. The size of the plants will correspond with that normally expected for species and variety of commercially available nursery stock or as specified in the Special Conditions or Drawings. The minimum acceptable size of all plants, measured before pruning with the branches in normal position, shall conform with the measurements, if any, specified on the Drawings in the list of plants to be furnished. Plants larger in size than specified may be used with the approval of the City, but if the use of larger plants is approved, the ball of earth or spread of roots for each plant will be increased proportionally.

3. All plants not conforming to the requirements herein specified, shall be considered defective and such plants, whether in place or not, shall be marked as rejected and immediately removed from the site of the work and replaced with new plants at the Contractor's expense. The plants shall be of the species, variety, size and condition specified herein or as shown on the Drawings. Under no conditions will there be any substitution of plants or sizes listed on the plans, except with the expressed written approval of the City.

4. At no time shall trees or plant materials be pruned, trimmed or topped prior to delivery and any alteration of their shape shall be conducted only with the

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August 2023 Landscape Installation
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approval and when in the presence of the City and/or as noted on the Planting Specifications.

5. Nursery Grown and Collected Stock
a. Plant materials shall conform with the best edition of ANSI Z60.1-1990 American Standard for Nursery Stock.
b. Grown under climatic conditions similar to those in locality of project. c. Container-grown stock in vigorous, healthy condition, not root bound or with root system hardened off.
d. Use only linear stock plant material, which is well established in removable containers or formed homogeneous soil sections.

E. Tree Protection Material

1. Use plant protection device on all seedlings – 36” protective tree tube. Available from Tree Pro (800) 875-8071 or approved equal.

F. Biodegradable Filter Fabric

1. Poly Mulch Mat and Stakes – Available from Tree Pro (800) 875-8071 or approved equal.

PART 3 - EXECUTION

3.01 OBSERVATION
City Inspector to observe plant material for injury, insect infestation and improper pruning. Do not begin planting of seedlings until deficiencies are corrected or plants replaced.

3.02 PREPARATION
A. Soils Analysis – After fill soil is set in place Contractor to have planting area soil samples analyzed for amendment recommendations. Samples to be taken from four locations;

1. Mounded fill areas

2. Excavated wetland area

3. Native grade area (areas where no fill or excavation is to take place) Soil amendments recommended in soils analysis to be mixed into soil profile or hydroseed mix per these specifications.

B. Preparation of Planting Areas:

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1. Flag or mark with lime locations for plants and outline of planting beds on ground. Do not begin excavation until plant locations and plant beds are acceptable to the City.

2. Compacted areas shown on plan and described in section 02260 LANDSCAPE GRADING shall be scarified to a 12” depth before hydroseed application.

3. Amend soil per soils analysis.

4. Each tree seedling planting location shall be cleared of all competing vegetation in a 3' by 3' area.

C. Finish Grade

1. Remove all construction debris and any soil contaminated by construction debris.

2. Establish finish grades in a continuous uniform line resulting in a uniform surface with no ridges or water pockets.

3.03 INSTALLATION
A. General

1. Actual planting shall be performed during those periods when weather and soil conditions are suitable and in accordance with locally accepted practice, as approved by the City.

3. Only as many plants as can be planted and watered on that same day shall be distributed in a planting area.

4. Water and hydroseed vehicles to remain on designated access and driveway roads only.

3. Container shall be opened and plants shall be removed in such a manner that the ball of earth surrounding the roots is not broken and they shall be planted and watered as herein specified immediately after removal from the containers.

Containers shall not be opened prior to placing the plants in the planting area.

B. Layout of Major Plantings

1. Locations for plants and outlines of areas to be planted shall be marked on the ground by the Contractor before any plant pits are dug. All such locations shall be approved by the City. If an underground construction or utility line is discovered prior to work, other locations for planting may be selected by the City.

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August 2023 Landscape Installation
02905-7
C. Planting of Tree Seedlings

1. Excavation for planting shall include the stripping and stocking of all acceptable topsoil encountered within the areas to be excavated for trenches, tree holes, plant pits and planting beds.

2. Excess soil generated from the planting holes and not used as backfill or in establishing the final grades shall be spread evenly on site.

1. Excavating for Planting:
a. Planting holes to be twice the width of the root ball shall be excavated using an auger, a shovel, or similar technique approved by the City Inspector. The planting hole shall be broken up 6” beyond root ball.
b. Container Removal - Carefully remove plants without injury or damage to rootball. After removing plant, manually scarify root ball to loosen perimeter roots.

5. Seedling Placement
a. Center plant in pit.
b. Face plants with fullest growth into prevailing wind. c. Set plant plumb and hold rigidly in position until soil has been tamped firmly around root ball.
d. Remainder of planting pit shall be backfilled with pulverized native soil e. All plants which settle shall be raised to the correct level. After the plant has been placed, additional backfill shall be added to the hole to cover approximately one-half (1/2) of the height of the root ball. Water shall be added to the top of the partly filled hole to thoroughly saturate the root ball and adjacent soil.
f. The remainder of the hole shall be backfilled.
g. After backfilling an earthen basin shall be constructed around each plant.

Each basin shall be (3) inches deep. Basin shall be of a size suitable for the individual plant. The basins shall be constructed of native soil.

D. Poly Mulch Mat

1. 3' square poly mulch fabric to be placed at base of each tree. Corners are to be staked.

E. Bark Mulch Cover

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August 2023 Landscape Installation
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1. All tree seedling earthen basins to be top-dressed with two and one-half (2-1/2) inch layer of mulch (after settling).

F. Hydromulch

1. Hydromulching: Profile Flexterra HP-FGM shall be applied per manufacturers specifications in two-step process. All vehicles and heavy equipment used in the process remain on designated access and driveway roads only. Hydromulch application shall contain the proper proportions of water to form slurry mixture, and the following components at these specified rates per acre:
a. Wetland Mix: as shown on plans
b. Transitional Mix: as shown on plans
c. Upland Mix: as shown on plans
d. Erosion Control Mix: as shown on plans
c. 436 pounds/acre 16-20-0 ammonium phosphate, 2,178 pounds mulch fiber, add quantity of water as recommend by manufacturer.

2. Clean hydroseed immediately off any area other than those specified on plans.

3. The Contractor shall avoid any additional soil compaction, and shall not permit vehicular or equipment traffic over such areas. In the event of such compaction, the Contractor shall be required to re-cultivate any areas thus compacted.

4. All hydromulch to be fully established prior to starting of the maintenance period.

All areas un-established during maintenance period to be re-hydromulched at the expense of the contractor.

G. Weed Control
All weed control shall be achieved by mechanical measures, herbicides are not allowed per city regulations.

3.04 CLEAN UP
After all planting operations have been completed; remove all trash, excess soil, empty plant containers or rubbish from the property. All scars, ruts or other marks in the ground caused by this work shall be repaired and the ground left in a neat and orderly condition throughout the site. The Contractor shall pick-up all trash resulting from this work no less frequently than each Friday before leaving the site, once a week, and/or the last working day of each week. All trash shall be removed completely from the site. The Contractor shall leave the site area broom-clean and shall wash down all paved areas within the Contract area, leaving the premises in a clean condition acceptable to the City.

3.05 OBSERVATION SCHEDULE

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August 2023 Landscape Installation
02905-9
A. The Contractor shall be responsible for notifying the City in advance for the following observations according to the time indicated:

1. Pre-construction conference - 7 days.

2. Finish grade review - 48 hours.

3. Review of proposed branch cutting locations – 48 hours.

4. Plant material review - 48 hours.

5. Soil preparation, plant layout, and planting operations. One (1) tree with each type of specified shall be approved prior to planting of trees - 48 hours.

6. End of landscape installation - 48 hours.

7. End of landscape maintenance/Final Acceptance - 48 hours B. No site visits shall commence without all items noted in previous Observation Reports either completed or remedied, unless such compliance has been waived.

Failure to accomplish punch list tasks or prepare adequately for desired observations shall make the Contractor responsible for reimbursing the City at his current billing rates per hour, plus transportation costs.

3.06 LANDSCAPE MAINTENANCE
Provide Landscape Maintenance as per SECTION 02970 - LANDSCAPE MAINTENANCE.

END OF SECTION

Riverside Park Regeneration Project Section 02905.10
August 2023 Hydroseed
312514.14-1
SECTION 31 25 14.13

HYDROSEED

GENERAL

1.01 SUMMARY
A. This section specifies the hydraulically-applied erosion control product category of High Performance-Flexible Growth Medium (HP-FGM). The HP-FGM shall be is a biodegradable, High Performance-Flexible Growth Medium (HP-FGM) composed of 100% recycled, thermally refined virgin wood fibers, crimped biodegradable interlocking fibers derived from regenerated cellulose sourced from sustainably harvested wood, micro-pore granules, naturally derived cross-linked biopolymers and water absorbents. The HP-FGM is patented, made in the US, plastic-free, and phytosanitized to eliminate potential weed seeds and pathogens. The product requires no curing period and upon application forms an intimate bond with the soil surface to create a continuous, porous, absorbent and flexible erosion resistant blanket that allows for rapid germination and accelerated plant growth.

B. Related Sections: Other Specification Sections, which directly relate to the work of this Section include, but are not limited to the following:

1. Section 02905 – Landscape Installation

2. Section 02300 – Earthworks

1.02 SUBMITTALS
A. Product Data: Submit manufacturer’s product data and installation instructions. Include required substrate preparation, list of materials and application rate.

B. Certifications: Manufacturer shall submit a letter of certification that the product meets or exceeds all technical and packaging requirements and is made in the U.S.A.

1.03 DELIVERY, STORAGE AND HANDLING
A. Deliver materials and products in UV and weather-resistant factory labeled packages. Store and handle in strict compliance with manufacturer’s instructions and recommendations. Protect from damage, weather, excessive temperatures and construction operations.

PRODUCTS

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2.01 MATERIALS
A. The HP-FGM shall conform to the following typical property values when uniformly applied at a rate of 3,500 pounds per acre (3,900 kilograms/hectare) under laboratory conditions.

Property Test Method Tested Value (English) Tested Value (SI) Physical
Mass/Unit Area ASTM D6566 ≥11.6 oz/yd2 ≥390 g/m2
Thickness ASTM D65251 ≥ 0.22 inch ≥ 5.6 mm
Ground Cover ASTM D65671 ≥ 99% ≥ 99%
Water Holding ASTM D7367 ≥ 1,700% ≥ 1,700%
Material Color Observed Green Green
Performance
Cover Factor2 ASTM D8298- ≤ 0.01 ≤ 0.01
% Effectiveness3 ASTM D8298- ≥ 99% ≥ 99%
Vegetation ASTM D73221 ≥ 800% ≥ 800%
Functional Longevity4 ASTM D5338 ≤ 18 months ≤ 18 months Cure Time Observed 0 - 2 hours 0 - 2 hours
Environmental
Ecotoxicity5 EPA 2021.0 Non-Toxic Non-Toxic
Biodegradability ASTM D5338 Yes Yes
Certified BioPreferred®
Biobased Content ASTM D6866 100% 100%
Elemental Impurity ASTM D8082 Pass Pass
Carbon Footprint6 Life Cycle
Assessment
≤0.4 Unit CO2e/
Unit of product7
≤0.4 Unit CO2e/
Unit of product7

1. ASTM test methods developed for Rolled Erosion Control Products and have been modified to accommodate Hydraulically-Applied Erosion Control Products.

2. Cover Factor is calculated as soil loss ratio of treated surface versus an untreated control surface.

3. % Effectiveness = One minus Cover Factor multiplied by 100%.

4. Large scale testing conducted at Utah Water Research Laboratory. For specific testing information please contact a Manufacturer representative.

5. Functional Longevity is estimated time period, based upon ASTM D5338 testing and field observations, that a material can be anticipated to provide erosion control and agronomic benefits as influenced by composition, as well as site-specific conditions, including; but not limited to – temperature, moisture, light conditions, soils, biological activity, vegetative establishment and other environmental factors.

6. Cradle to factory gate (Conover, NC) life cycle assessment.

7. “Carbon dioxide equivalent” or CO2e is a term for describing different greenhouse gases in a common unit. For any quantity and type of greenhouse gas, CO2e signifies the amount of CO2 which would have the equivalent global warming impact. The unit of CO2e per unit of product is a consistent ratio based on mass, regardless of what unit of mass is chosen. For instance, there is 0.4 kg of CO2e per kg of product or 0.4 oz CO2e per oz of product.

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2.02 COMPOSITION
A. All components of the HP-FGM shall be pre-packaged by the Manufacturer to assure both material performance and compliance with the following values. Under no circumstances shall field mixing of components be permitted. No chemical additives with the exception of fertilizer, soil neutralizers and biostimulant materials should be added to this product.

1. Thermally Processed* (within a pressurized vessel) Virgin Wood Fibers – 80% *Heated to a temperature greater than 380 degrees Fahrenheit (193 degrees Celsius) for 5 minutes at a pressure greater than 50 psi (345 kPa)

2. Wetting agents (including high-viscosity colloidal polysaccharides, cross-linked biopolymers, and water absorbents) – 10%

3. Crimped Biodegradable Interlocking Fibers derived from regenerated plant sources – 5%

4. Micro-Pore Granules – 5%

2.03 PACKAGING
A. Bags: Net Weight – 50 lb (22.7 kg), UV and weather-resistant plastic film Pallets: Weather-proof, stretch-wrapped with UV resistant pallet cover Pallet Quantity: 40 bags/pallet or 1 ton (909 kg)/pallet

EXECUTION

3.01 SOIL TESTING
A. Soil Samples shall be taken and sent to a third-party, independent lab for analysis and in compliance with Section 02 24 23 – Chemical Sampling and Analysis of Soils, if applicable.

B. The tests shall include analysis and interpretation of results.

C. The soil testing methods used shall be compliant with recognized agronomic testing standards, as outlined in Section 02 24 23, for revegetation of disturbed sites.

D. Soil Analysis shall include results for:

1. Soil pH

2. Soluble Salts

3. Excess Carbonate

4. Organic Matter

5. Nutrient readings for:
i. Nitrogen, Phosphorus, Potassium
ii. Magnesium, Calcium, Sodium, Manganese, Sulfur, Zinc, Copper, Iron, Boron

6. Cation Exchange Capacity

7. Percent Base Saturation Sodium

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E. Any soil amendments or soil neutralizers shall be specified according to Section 32 01 90.16 – Amending Soils and applied with the hydroseeding slurry at Manufacturer recommended rates based on soil test results.

3.03 SUBSTRATE AND SEEDBED PREPARATION
A. Examine substrates and conditions where materials will be applied. Apply products to geotechnically stable slopes that have been designed and constructed to divert runoff away from the face of the slope.

Do not proceed with installation until satisfactory conditions are established.

B. Depending upon project sequencing and intended application, prepare seedbed in compliance with other specifications under Section 1.01 B

3.04 INSTALLATION
A. Strictly comply with equipment manufacturer's installation instructions and recommendations. Use approved hydroseeding machines with fan-type nozzle (50-degree tip). To achieve optimum soil surface coverage, apply HP-FGM from opposing directions to soil surface. Rough surfaces (rocky terrain, cat tracked and ripped soils) may require higher application rates to achieve 100% cover. Slope interruption devices or water diversion techniques are recommended when slope lengths (3H:1V) exceed 100 feet (30 m). Slope interruption intervals may need to be decreased based on steeper slopes or other site conditions. HP-FGM is not recommended for channels or areas with concentrated water flow unless used in conjunction with a rolled erosion control product designed to accommodate the anticipated hydraulic conditions. Unless approved by the Manufacturer, no chemical additives with the exception of fertilizer, soil neutralizers and biostimulant materials should be added to this product.

B. For Erosion Control and Revegetation: To ensure proper application rates, measure and stake area. For maximum performance, apply HP-FGM in a two-step process*:

1. Step One: Apply fertilizer with specified prescriptive agronomic formulations and typically 50% of specified seed mix with a small amount of HP-FGM for visual metering. Do not leave seeded surfaces unprotected, especially if precipitation is imminent.

2. Step Two: Mix balance of seed and apply HP-FGM at a rate of 50 lb per 125 gallons (22.7 kg/475 liters) of water over freshly seeded surfaces. Confirm loading rates with equipment manufacturer.
*Depending upon site conditions HP-FGM may be applied in a one-step process where all components may be mixed together in single tank loads. Consult with Manufacturer for further details.

Best results and more rapid curing are achieved at temperatures exceeding 60°F (15°C). Curing times may be accelerated in high temperature, low humidity conditions with product applied on dry soils.

C. Mixing: A mechanically agitated hydroseeding machine is strongly recommended:

1. Fill 1/3 of mechanically agitated hydroseeder with water. Turn pump on for 15 seconds and purge and pre-wet lines. Turn pump off.

2. Turn agitator on and load low density materials first (i.e. seed).

3. Continue slowly filling tank with water while loading fiber matrix into tank.

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4. Consult application and loading charts to determine number of bags to be added for desired area and application rate. Mix at a rate of 50 lb of HP-FGM per 125 gallons (22.7 kg/475 liters).

5. All HP-FGM should be completely loaded before water level reaches 75% of the top of tank.

6. Top off with water and mix until all fiber is fully broken apart and hydrated (minimum of 10 minutes — increase mixing time when applying in cold conditions). This is very important to fully activate the bonding additives and to obtain proper viscosity.

7. Add fertilizer and any other remaining amendments.

8. Shut off recirculation valve to minimize potential for air entrainment within the slurry.

9. Slow down agitator and start applying with a 50-degree fan tip nozzle.

10. Spray in opposing directions for maximum soil coverage.

D. Application Rates: These application rates are for standard conditions. Application rates may need to be increased to accommodate rough surfaces.

Slope Gradient / Condition English SI
< 4H to 1V 2,500 lb/ac 2,800 kg/ha
> 4H to 1V and < 3H to 1V 3,000 lb/ac 3,400 kg/ha
> 3H to 1V and < 2H to 1V 3,500 lb/ac 3,900 kg/h
> 2H to 1V and < 1H to 1V 4,000 lb/ac 4,500 kg/ha
> 1H to 1V 4,500 lb/ac 5,100 kg/ha
Below ECB or TRM 1,500 lb/ac 1,700 kg/ha
As infill for TRM* 3,500 lb/ac 3,900 kg/ha
*Use only approved and tested Turf Reinforcement Mats (TRMs) to infill with the HP-FGM For additional details including mixing ratios/loading rates for specific machine sizes and visual keys for proper application, please consult the Manufacturer’s Application Guide for High Performance – Flexible Growth Medium.

3.05 CLEANING AND PROTECTION
A. Always flush residual slurry from hydraulic seeding/mulching equipment immediately following each application, at the end of each work period or when equipment will be left unattended. Compounds containing residual Urea, Nitrogen, Phosphorus, Potassium and other substances may form and can be hazardous to human health and equipment.

B. Clean spills promptly. Advise owner of methods for protection of treated areas. Do not allow treated areas to be trafficked or subjected to grazing.

3.06 INSPECTION AND MAINTENANCE
A. All inspections and maintenance recommendations shall be conducted by qualified professionals consistent with the owner, engineer/specifier and regulatory entity(s) expectations.

Riverside Park Regeneration Project Section 02905.10
August 2023 Hydroseed
312514.14-6
B. Initial inspections shall insure installations are in accordance with the project plans and specifications with material quantities and activities fully documented. Refer to Section 32 92 00 – Turf and Grasses for any additional details.

C. Subsequent inspections shall be conducted at pre-determined time intervals and corrective maintenance activities directed after each significant precipitation or other potentially damaging weather or site event.

END OF SECTION

Riverside Park Regeneration Project Section 02970
August 2023 Landscape Maintenance
02970 - 1
SECTION 02970

LANDSCAPE MAINTENANCE
PART 1 - GENERAL

1.01 CONDITIONS
A. The general provisions of the Contract, including General and Supplementary Conditions and General Requirements (if any) apply to the work specified in this Section.

1.02 SCOPE OF WORK
A. Furnish all labor, material, equipment and services required to maintain landscape in a healthy growing condition and in a neat and attractive appearance throughout the maintenance period.

B. Related Work Specified in Other Sections:

1. SECTION 02905 - LANDSCAPE INSTALLATION

2. SECTION 02811 – IRRIGATION

1.03 QUALITY ASSURANCE
The Maintenance Contractor shall be experienced in horticulture and landscape maintenance, practices and techniques, and shall provide sufficient number of workers with adequate equipment to perform the work during the maintenance period.

1.04 MAINTENANCE PERIOD

A. Continuously maintain the entire project area during the progress of the work and during the ninety (90) calendar - day, maintenance period or until final acceptance of the project by the City of Ukiah.

B. Maintenance period shall not start until all elements of construction and planting for the entire project are in accordance with Plans and Specifications and the Contractor has delivered the corrected and completed as-built plans on reproducible and digital media to the City of Ukiah. A prime requirement is that all seeded areas shall be planted and that all seeded areas shall show a healthy stand of seedlings as determined by the Owner’s Representative. If such criterion is met to the satisfaction of the City of Ukiah, a written notification shall be issued to establish the effective beginning date of the maintenance period.

C. Any day of improper maintenance, as determined by the City of Ukiah, shall not be credited as an acceptable maintenance period day. The maintenance period shall be extended on a daily basis if the maintenance work is not in accordance to the Plans

Verbena Fields Section 02970
March 24, 2008 Landscape Maintenance
SECTION 02970 - 2
and Specifications. Project shall not be segmented into maintenance areas or phases, unless authorization of the City of Ukiah is obtained in writing.

D. Maintenance shall continue beyond the ninety (90) day maintenance period, as required, until final acceptance is given by the City of Ukiah.

1.05 GUARANTEE AND REPLACEMENT
A. Guarantee: All plant material and other materials installed under the Contract shall be guaranteed for one (1) year from time of final acceptance against any and all poor, inadequate or inferior materials and/or workmanship, installation or improper maintenance (during contracted maintenance period), as determined by the City of Ukiah, shall be replaced by the Contractor at his expense.

B. Replacement: Any plant materials found to be dead, missing, or not in a satisfactory or healthy condition during the maintenance period shall be replaced immediately.

The City of Ukiah shall be sole judge as to the condition of material. Material to be replaced within the guarantee period shall be replaced by the Contractor within five (5) days of written notification by the City of Ukiah. All replacement materials and installations shall comply with the Plans and Specifications. Any plant missing due to suspected theft shall be replaced by the Contractor. If the Contractor suspects that theft may be a problem, the Contractor shall provide written documentation to the City of Ukiah that security on this site needs to be intensified. The Contractor may relieve himself of theft responsibility if after the security notice, with no result, a written notice to the City of Ukiah shall be given that plant material will not be replaced for theft or vandalism due to lack of site security being maintained. This procedure may take place only during the Landscape Maintenance Period.

1.06 INSPECTION SCHEDULE

A. The contractor will meet with the City of Ukiah at intervals not to exceed of 30, 60, and 90 days to determine acceptability of the work. It will be the contractor's responsibility to initiate the date and time of such meetings.

B. The contractor shall be responsible for setting up all site visits and securing approvals from the various city departments that will be involved in this project including but not limited to: Parks Department, Public Works Department, Planning Department and the Building Department.

1.07 FINAL ACCEPTANCE OF THE PROJECT
A. During the progress of the maintenance period, the contractor and the City of Ukiah shall conduct inspection at not less then 30-day intervals to determine that the contractor has conducted ongoing maintenance activities. If in the opinion of the City of Ukiah, the contractor has not conducted ongoing maintenance in satisfactory manner, the work shall be rectified and/or completed by the contractor and the maintenance period shall begin over again.

Verbena Fields Section 02970
March 24, 2008 Landscape Maintenance
SECTION 02970 - 3
B. Upon completion of all project work, including maintenance period, the City of Ukiah will, upon proper request, make an observation to determine final project acceptability.

C. Where observed work does not comply with the Plans and Specifications, replace rejected work and continue specified maintenance period until reinspected by the City of Ukiah and determined to be acceptable. All replacement materials and installations shall be in accordance with the Plans and Specifications. Remove rejected work and materials immediately from project. Prior to the date of final observation, Contractor shall provide the City of Ukiah with all Record Drawings and written Guarantee Statement in accordance with the Plans and Specifications.

PART 2 - PRODUCTS

2.01 MATERIALS

All materials used shall either conform to Specifications in other sections or shall otherwise be acceptable to the City of Ukiah. The City of Ukiah shall be given a monthly record of all herbicides, insecticides and disease control chemicals used.

PART 3 - EXECUTION

3.01 GENERAL
A. Proper maintenance, including watering, weeding, fertilization, repairing and protection shall be required until entire project is finally accepted, but in any event for a period of not less than the specified maintenance period after planting.

B. Watering: Thoroughly water to insure vigorous and healthy growth until work is accepted. Water in a manner to prevent erosion due to application of excessive quantities of water. When hand watering use a water wand to break the water force.

C. Weeding: Keep plant basins and areas between plants free of weeds. Control weeds by spade removal when necessary. Avoid frequent soil cultivation that destroys shallow roots. Weeding also shall be included in all paved areas including public or private sidewalks. Do not apply herbicides besides the two applications specified prior to planting.

D. Tree Protective Material, Stakes and Mats shall be inspected and adjusted to prevent rubbing that causes bark wounds and remain installed per plan.

E. Insect, Animal, Rodent and Disease Control: Maintain proper control with legally approved materials as required as part of the Contract.

Verbena Fields Section 02970
March 24, 2008 Landscape Maintenance
SECTION 02970 - 4
F. Protection: The Contractor shall maintain protection of the planted areas.

Damaged areas shall be repaired or replaced at the Contractor's expense.

G. Trash: Remove trash weekly within project limit of work.

H. Replacement: As per Guarantee and Replacement Specifications of this Section.

3.02 HYDROSEED MAINTENANCE
A. Watering: Maintenance for irrigation of seeded areas shall not begin until the specified seed has germinated at an acceptable rate as determined by the City of Ukiah. Provide all necessary irrigation maintenance so as to supply a flow of water to the seeded areas without interruption, at such frequency as weather conditions require to replenish soil moisture below root zone and to establish healthy strands of grass.

B. Weed Control: If needed, control broad leaf weeds with spade removal (no herbicides).

C. Replacement: At conclusion of maintenance period a final observation of seeded areas shall be made. Remove diseased areas and unhealthy strands of grass from the site; do not bury into the soil. Replant areas with materials and in a manner as specified on the Plans and Specifications at no additional cost to the City of Ukiah.

3.03 IRRIGATION SYSTEM
A. System Observation: The Contractor shall check all systems for proper operation.

Lateral lines shall be flushed out after removing the last drip transition. Drip tubing to zones to be flushed out after assembly, prior to burial. All emitter locations are to be adjusted as necessary for unimpeded coverage.

B. Controllers: Set and program automatic controllers for seasonal water requirements. Give the Owner's representative instructions on how to turn off system in case of emergency.

C. Repairs: Repair all damages to irrigation system at the Contractor's expense.

Repairs shall be made within twenty-four (24) hours.

END OF SECTION

CITY OF UKIAH

TREE MANAGEMENT

GUIDELINES

TREE MANAGEMENTPOLICIES FOR THE PROTECTION,

OPERATION AND MAINTENANCE OF CITY PROPERTY
Adopted12-01-10 & Revised 11-19-14
Attachment 4

2 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

FOR THE OPERATION AND MAINTENANCE OF CITY

PROPERTY

1.0 PURPOSESTATEMENT
The purpose of this document is to provide policy guidelinesfor the preservation, maintenance and enhancement of the urban forest in parks and other areas maintained by the staff and contractors of the City of Ukiah. These guidelines are based on policy from the City of Ukiah GeneralPlanGrowth ManagementProgramadoptedby theCityCouncilDecember6,1995and amendedJune16,2004and the City of UkiahCommunityForestManagementPlan, adopted by the City Council on November 3, 1993. “ Treesare a precious legacywhichimprove our quality of lifeand enhance ourcommunity imageand pride. Treesenrichairandwaterquality, provide wildlifehabitat,increaseaesthetic value,reducesoil erosion, andhelp us tomaintain a sense of rural community.” Community Forest Management Plan Vision Statement

2.0 DEPARTMENTSAFFECTED

2.1 Community Services Department

2.2 Public Works Department

2.3 Electric Utility Department

2.4 Planning and Community DevelopmentDepartment

2.5 Ukiah Municipal Airport

3.1 RESPONSIBILITY
The department directorsshall be responsible for the implementation of these polices and guidelines and all staff shall be trained and shall abide by these guidelines and policies as outlined in this document. City Councilshall approve any significant amendmentsor changesto theTreeManagement Guidelines andPoliciesproposedby staff and community partners before they are adopted.

3.2 The Directors of the departments are responsible for the preservation, care and maintenance of trees as follows:

3.2.1 Community Services Department is responsible for all treesin public parks including the CommemorativeProgram trees.

3.2.2 Public Works Department is responsible for all trees in the public right of way and creeks.

3.2.3 Electric Utility Department is responsible for trimming of trees to maintain clearance from primary electric lines and facilities

3.2.4 Planning and Community Development Department is responsible for oversight of all landscaping plansfiled by the applicant.

3.3 Partnerships: Volunteers and/or community groups shall be important partnersto achieve objectivesfor urban forestry.

3 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

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4.0 TRAINING
City staff shall receive training on all procedures listed in this document, including on-site classes and/or training provided by Mendocino College and assorted qualified arboricultural professionals on a regular schedule to ensure that proper methods are utilized.

All City of Ukiah staff performing tree care duties within the City’s urban forest shall attend a minimum of two training workshops annually.

A workshop for dormant care of trees will be held in the Fall/Winter months. A second workshop will occur in the Spring/Summerto train for the growing season. Workshops will include, but not limited to:
properseasonal maintenance; best practicesfor soil conditioning; proper pruning techniques; and plant identification. Workshops will generally be held in the field and last about two hours and will be run by a qualified arboricultural professional with expertise in best practices for urban forest care.

5.0 POLICYGOALS
The Tree Management Guidelinesfocus on long-term protection of the City’strees and have been developed for the preservation, planting, care, removal or disposition of trees, replacement planting in parks, along streets and in other public areas.

The City of Ukiah intends that these guidelines and policiesshall remain in effect, however, they will be subject to change based upon arboriculturalstandards, community input and staff recommendations.

Suggestionsfor changesto the Guidelines must be submitted in writing to a department director. They will then be discussed with community partners and staff and then submitted to the City Council for approval.

6.1 GUIDELINESFOR TREE CARE AND MAINTENANCE
Staff and contracted professionals shall utilize International Society of Arboriculture’s Best Management Practices (ISA BMP) and/or American National Standards Institute (ANSI). A Glossary of terms is included in Section 9.0.

Specific criteria as detailed in the ISA BMP shall be established and applied to for the removal and/or pruning of trees located in or on City property. The same criteria shall be used to evaluate the overall public benefit of the proposed work. In all cases, safety concernsshall receive priority. In addition, priority will be given to limiting removal, increasing forest canopy, and preserving appropriate vegetation on park property.

6.2 Tree Preservation: The health and physicalstate of treesshall be maintained and protected whenever possible. Instances not specifically covered elsewhere in this policy include:

4 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

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6.2.1 Conservation of Landmark Trees: These are individual trees that are considered unique because of size, species, historical significance, and shall be given extra protections and consideration for retention. Refer to the Glossary of Terms.

6.2.2 Conservation of Commemorative Program Trees: These are individual trees or groves purchased by someone from the City of Ukiah to memorialize an individual or group.

Refer to the Glossary of Terms.

6.2.3 Existing Trees: Staff shall change use patternsin root zones whenever practical. For example: Vehicles parked or materialsstored in the root zone shall be subject to an education and/or enforcement campaign to reverse the damage to the tree roots; pathways causing excessive compaction around tree roots shall be relocated if other options are deemed insufficient. Fencing, boulders, logs and landscaping are reasonable deterrentsto reduce further damage and shall be used whenever practical.Refer to ISA BMP Integrated Vegetation Management.

6.2.4 Special consideration shall be given for unique situations. Every effort shall be made to protect trees growing near underground streams.

6.1.5 Storm water flooding and sedimentation of drainage areasshall be properly considered before tree removal.

6.1.6 The relationship of vegetation to slope stability will be a primary consideration in all proposed vegetation management on slopes.

6.1.7 Diseased or Infested Plants That Pose Risk to Trees: Action shall be taken to effectively decrease risk to other trees from pests and diseases. This may include removal and destruction of affected materials, pesticide treatments and/or alternative cultural practices. Other qualified expertsshall be consulted as needed. Referto ISA BMP Integrated PestManagement;City of Ukiah Integrated Pest Management Plan.

6.1.8 Damage, Vandalism and Illegal Cutting: Action shall be taken whenever possible to investigate and prosecute vandalism and illegal cutting of city-owned trees.

Compensation for damagesshall be sought based on the appraised value in accordance with The Guide for Plant Appraisal as authored by the Council of Tree and Landscape Appraisers.

6.2 Planting: Planning before planting can ensure that the right tree is planted in the right location.

Proper tree selection and placement preventstree damage and costly maintenance like trimming.

Consideration of water requirements and climate and surrounding infrastructure such as sidewalks, sewer lines and overhead/underground power lines shall improve the chancesfor optimum growth potential. Refer to the City of Ukiah’s MasterTreeList;City of UkiahTreePlantingand MaintenanceRecommendations; ISABMPTreePlanting; and ISABMPTree SupportSystems.

6.3 Root Environment and Tree Root Zones: Refer to the Glossary of Terms. Whenever feasible, a pro-active program of cultural practicesshall be implemented to maintain the health and vitality of City trees. Refer to ISA BMP Tree and Shrub Fertilization.

6.3.1 Treesin parks, fields and all other areas both developed and undeveloped:

5 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

FOR THE OPERATION AND MAINTENANCE OF CITY

PROPERTY

6.3.1.1 Soil Compaction: Every effortshall be made to avoid the compaction of soil in root zones and to encourage penetration of rainfall deep into the soil.

6.3.1.2 Mulch: Organic materialsuch as mulch and leavesshall not be removed
under the tree canopy.

6.3.1.3 Crewsshall, when feasible and practical, establish and maintain the areas under tree canopiesfree of turf and invasive plant species. The use of native grasses and plants are encouraged, as are plants associated with the trees above them. Special consideration shall be given to oak trees and the use of drought tolerant plants near them.

6.3.1.4 Parking: Vehicles and equipmentshould be parked on paved areas, streets and parking lots.

6.3.1.5 Pavement: The use of pavement within park and garden areas shall be limited as much as possible, especially under tree canopies. Whenever pavement is necessary the use of permeable materialsis preferred.

Remove the affected curb and damaged or cracked pavement due to root uplift when feasible. Level the section with mulch, chips, sand, or gravel rather than replacing the area with impervious materials.

6.3.1.6 Leaf Blowers: The use of leaf blowersis discouraged. Leaf blowersshould not be used to blow debris with native soil.

6.3.1.7 Pesticides: The use of pesticidesis discouraged. Please refer to the City
Integrated Pest Management policy.

6.3.1.8 Stakes: In the unusualsituation when stakes are needed they should be driven in outside the root ball. ISA BMP Tree Support Systemsshall be followed.

6.4 Construction around Trees: Protection devicesshall be installed to protect the tree and root zones when near or within construction zones. The root system extends at least to the edge of the canopy or drip line of the tree with most of the fine feeder roots active in the top few inches of the soil. These roots need air to stay healthy in order to provide the tree with nutrients and water.

This root zone shall be protected from compaction, changesin soil grade, digging, or other disturbances.

Protective fencing and warning signage will be required around the root zone. All tree protection devicesshall be visible, well-anchored, and approved in the field by the Supervisor or designee prior to clearing, grading, or beginning of construction and shall remain in place and maintained until the project is completed. Refer to ISABMP Managing Trees During Construction and ANSI Construction Management andStandard.

6 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

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PROPERTY

6.5 Consultationwith a Qualified Arboricultural Professional: When planning and designing a public improvement project the City shall seek the appropriate qualified expert when the project involves or is near a tree or trees.

6.6 Pruning Standards: The latest pruning standards established by the International Society of Arboriculture shall be used in the maintenance of trees and are detailed in the ISA Best Maintenance Practice booklets. Refer to ISA BMP Tree Pruning; ISA BMP Utility Pruning of Trees. Such maintenance will include:

6.6.1 General pruning for clearance to prevent injuries and to facilitate maintenance and vehicle clearance.

6.6.2 Pruning dead, dying, and diseased sectionsto improve the health and appearance of the tree and to prevent accidents.

6.6.3 Pruning for clearance around lighting and overhead lines.

6.6.4 Pruning back for authorized passage on service roads, walkways and paths.

6.6.5 Pruning requested by a private property owner. Such requests do not obligate the Department to prune trees, shrubs, and/or vegetation. It is the responsibility of the business owner to plan their signage so that visibility is not affected by growing trees.

6.6.6 Pruning in park areasidentified as places of illegal or inappropriate activity in order to improve general visibility and increased police surveillance.

6.7 Birds and Nesting: Except in emergencies nesting birds or nests shall not be disturbed or harassed by pruning or removal activities. To avoid nesting season such activitiesshall occur between September 1st and March 31st. Fish and Game Code 3503: "It is unlawful to take, possess, or needlessly destroy the nest or eggs of any bird..." The Migratory Birds Treaty Act of 1918 also applies.

6.8 Unnecessary Wounding: Because “topping” of trees can cause permanent damage by promoting decay, as well as unnatural, dense and weak branching structure, topping shall not be practiced or permitted except under special circumstances. Not only can a tree sustain woundsto the branches or top, it can also sustain woundsto the trunk. Therefore, these policiesshall reinforce the protection of the trunk area from wounds associated with a lawn mower or other equipment.

6.9 Hazardous Tree Management: Public health, safety and general welfare will be maintained through the use of generally accepted professional practices of evaluation and treatment to reduce risks to people and property from hazardous trees. Attention to proper selection, planting and maintenance of new trees shall also be pursued to achieve long- term risk reduction.

6.9.1 The City of Ukiah shall assess and manage the risk of tree failure within the limits of available fiscal and human resources. Priority shall be given to locations and situations with high probability of failure and high potential damage or injury that may result.

7 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

FOR THE OPERATION AND MAINTENANCE OF CITY

PROPERTY

6.9.2 Notwithstanding an immediate hazard to safety and/or property, the City shall utilize a written tree risk assessment methodology established by the ISA (ISA Basic Tree Risk Assessment Form or equivalent) to evaluate the likelihood that part or all of a tree will fail and cause damage and/or injury by a qualified arboricultural professional. The components of the assessmentshall include tree health,species profile,site factors, history of failures, tree defects/conditions, target assessment,risk categorization, mitigation options and recommend inspection intervals when warranted.

6.9.3 Corrective action for high hazard rated treesshall be reasonable and prudent and may include:
• Moving any at-risk structures, equipment, fixtures or recreationalsites; • Correction of the defect by pruning, cabling and bracing, or tree removal; • Closure of the area

7.1 Tree Removal: The City shall provide 72 hours of advance notice of the intended tree or trees that shall be removed by posting a sign at the work site when feasible. The sign shall contain the reason for the removal of the tree and the appropriate city department’s telephone number that the public may contact for further information. Tree removal will include:

7.1.1 Treesthat pose substantial risk or hazard to the public, adjacent properties or to public facilities.

7.1.2 Dead, dying or diseased trees.

7.1.3 Removal from properties being improved or developed under an approved design, however, prior consideration to retention shall be given whenever possible.

Preference is to retain existing healthy trees when designing any developmentrather than attemptingmitigation.

7.1.4 Treesthat block trails, drains or otherwise obstruct the use and function of infrastructureelements.

7.1.5 Trees on sitesthat were over planted by design or are crowded from natural competition. As the landscape grows, the Supervisor with consultation with a qualified expertshallselectively remove trees on a site to maintain spacing for optimal tree growth and function.

7.1.6 Removal requested by a private property owner. However,such requests do not obligate the City of Ukiah to remove or allow removal of any trees, shrubs, and/or vegetation.

7.1.7 Consideration shall be given for providing trunk and limbs for service projects such as constructing benches and picnic tables. The use of wood chips for mulching material around trees and vegetation in the parksis encouraged.

7.1.8 Any person aggrieved or impacted by a decision to remove a tree may appeal the decision during the noticing period. A letter stating the reason(s) for the

8 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

FOR THE OPERATION AND MAINTENANCE OF CITY

PROPERTY
appeal must be submitted to the City Clerk’s Office. An appeal automatically stops any action or non-action on the tree until the responsible Department Director has an opportunity to review and consider the appeal. When feasible, the Director will consult with the City’s Tree Advisory Committee for additional input. The Director’s decision on an appeal is the final administrative determination.

The Director’sfinal determination may be appealed to the City Council. The appeal must be filed with the City Clerk’s Office within 10 days of the Director’s determination and must be accompanied by supporting documentation from a qualified arboricultural professional using the same tree risk assessment methodology established by the ISA as detailed in Section 6.9.2.

7.2 Tree Replacement: At least one tree shall be planted for every tree that is removed from City property. Replacement tree speciesshall be selected so that overall mature canopy volume will be maintained or increased. It is preferable to plant the replacement tree in close proximity to the original tree’s location. The replacement tree may be located elsewhere, if local conditions contributed to the previoustree’sfailure (See Section 6.2). New locationsshould be found on the same site or in the same neighborhood at a location of similar or greater value. Preference shall be given for planting native trees wheneverfeasible.

7.3 ReplacementPlantings: The City shall undertake the task of replacement plantingsto mitigate the effects of vegetation removal and to reestablish the landscape and increase overall mature forest canopy. The City shall determine the species of tree to be planted on City property and the planting location. Every effortshall be made to select a species compatible with the existing tree plantings on the street, the neighborhood identity, the maturity of the trees, space available for growth, the presence of underground and overhead utility lines, utility poles, streetlights, driveway approaches and fire hydrants.

7.4 Phasing: The City of Ukiah when appropriate shall consider a phased approach to vegetation management to reduce potentialshort-term negative aesthetic and/or wildlife habitat impacts (associated with such actions).

7.5 Wildlife and Habitat: Trees and forested areas are recognized as important habitat for native wildlife and providing vital wildlife corridors. Trees, undeveloped landscapes and creeks will be managed to optimize them for wildlife habitat. Refer to the City of Ukiah Creeks Maintenance Policies and Procedures.

8.0 SUMMARY
These guidelines are set in place to enhance the urban forest within the City of Ukiah. As industry standards change in regard to tree care, this documentshall remain flexible to incorporate needed changes.

9.1 GLOSSARY OF TERMS
For additional definitions, refer to the International Society of Arboriculture Best Management Practices

9 City of Ukiah Tree Management Guidelines

TREE MANAGEMENTGUIDELINES AND POLICIES

FOR THE OPERATION AND MAINTENANCE OF CITY

PROPERTY

9.2 CommemorativeProgram Tree Program provides an opportunity for the public in celebrating an event or memorializing a loved one by the planting of a young tree or trees while improving the appearance and canopy of City parks. A tree or grove is purchased from the City of Ukiah to honor or memorialize an individual or group. Such tree(s) are identified and recorded by the City of Ukiah with the name of the tree species, dedicated individual or group and the name of the donor.

9.3 Developed landscape is property that has been graded and/or planted, and contains plantingsthat are distinct from typical native forest. These active and/or passive recreational landscape areas are routinely maintained by park staff for public use.

Developed landscapesshall include, but are not limited to: lawns, athletic fields, boulevards, golf coursesincluding pitch and putt, lawn bowling greens, play areas, squares, places, triangles, and swimming beaches.

9.4 Hazardous Tree is a tree that can be predicted to fail and has a high probability of striking people or property causing injury or damage.

9.5 Invasive exotic vegetation consists of species of plantsthat are not native to our region and exhibit aggressive growth to the exclusion of native or planted landscapes and wildlife.

9.6 Landmark Trees are individual trees that have been designated as unique because of size, historical/commemorativeassociation, and distinct form, as an outstanding specimen or are important for wildlife habit. Such trees will be given extra protection and consideration for retention. Rules and regulationsfor landmark trees are defined in the City’s Landmark Tree Program and/or DowntownZoningCode.

9.7 Topping is the removal of the terminalshoot of a tree to a stub or lateral branch that is not sufficiently large enough to assume a terminal role or cannot be expected to achieve wound closure to inhibit decay.

9.8 Tree Failure is the breaking and falling of a tree or any substantial part of a tree.

This does not include falling leaves or fruit.

9.9 Tree Root Zone is the area from the trunk to the drip line or the edge of the unpruned canopy around a mature, uninjured tree or the anticipated root zone of a young tree.

9.10 Qualified Arboricultural Professional is a tree care professional with a minimum of two years of experience in the evaluation and care of trees in combination with a professional license or certification that measures minimum competency in relevant subjects, including protection of public health,safety and welfare. Acceptable titles include Certified Arborist, Registered Consulting Arborist,Registered Professional Forester, and Landscape Architect.

9.9.1 UndevelopedLandscape is property that contains native or volunteer (selfpropagated) plants and is not intended for recreational use except along designated trails. Undeveloped landscapes are (usually) not as intensively maintained as developed landscapes.

10 City of Ukiah Tree Management Guidelines

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10.0 ADDITIONALRESOURCES
Additional City and other tree-related documentsthat incorporate tree guidelines are available electronically through the Intranet. The Department Directorshall provide the The International Society of Arboriculture BestManagementPracticebooklets,AmericanNationalStandards Institute related documents and Mendocino County ReLeaf materialsto their employees.

These documents are:
• Municipal Code Article 2, Chapter 5, Number 5420 Street Tree Policy, Purpose and Intent (Ordinance 869, adopted 1987)
• Community Forest Management Plan
• Tree Protection and Enhancement Policy
• Tree Planting and MaintenanceRecommendations
• Master Tree List
• Integrated Pest Management Plan, Community Service Department • Creek Maintenance Policies & Procedures
• Form Based Zoning Preservation Tree List
• General Plan, Open Space and Conservation Element, adopted 12/6/1995; amended 6/16/2004
• Landscaping and Streetscape Design Guidelines
• CommercialDevelopment Design Guidelines
• International Society of Arboriculture Best Management Practices(ISA BMP): Managing Trees DuringConstruction; Tree Pruning; Integrated Pest Management; Tree Support Systems; Utility Pruning of Trees; Tree andShrub Fertilization; TreePlanting; Tree Inventories; Integrated Vegetation Management
• AmericanNationalStandardsInstitute(ANSI):Construction Management Standards • MendocinoCounty ReLeaf Tree Care Guide
• Hillside Ordinance 9135

CITY OF UKIAH

MENDOCINO COUNTY, CALIFORNIA

SPECIAL PROVISIONS
FOR

RIVERSIDE PARK REGENERATION
SPECIFICATION NO. 24-05

ADD STAMP HERE

CITY OF UKIAH

DEPARTMENT OF PUBLIC WORKS
300 Seminary Avenue
Ukiah, California 95482-5400
Bids Open: _____,_______, ____________
2:00 p.m.

Office of City Clerk
Attachment 3

CITY OF UKIAH

MENDOCINO COUNTY, CALIFORNIA
CITY COUNCIL:

JOSEFINA DUEÑAS – MAYOR
DOUGLAS CRANE– COUNCIL MEMBER
SUSAN SHER – COUNCIL MEMBER
JUAN OROZCO– COUNCIL MEMBER
MARI RODIN– COUNCIL MEMBER
SAGE SANGIACOMO – CITY MANAGER

TIM ERIKSEN - DIRECTOR OF PUBLIC WORKS / CITY ENGINEER
MARY HORGER – PROCUREMENT MANAGER
KRISTINE LAWLER – CITY CLERK
R. ALLEN CARTER - CITY TREASURER

CITY OF UKIAH

DEPARTMENT OF PUBLIC WORKS
APRIL 2024

RIVERSIDE PARK REGENERATION iii Spec No.24-05

TABLE OF CONTENTS
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NOTICE TO BIDDERS
INSTRUCTIONS TO BIDDERS...................................................................................................................... 1

GENERAL CONDITIONS
SECTION 1. PROPOSAL REQUIREMENTS AND GENERAL CONDITIONS ............................................. 3 1-01. Definitions
1-02. Examinations of Plans, Special Provisions and Site of Work 1-03. Proposal
1-04. Withdrawal of Bids
1-05. Public Opening of Bids
1-06. Bid Guaranty
1-07. Qualification of Bidders
1-08. Disqualification of Bidders
1-09. Identification of Subcontractors
1-10. General Provisions of the Standard Specifications 1-11. Addenda
SECTION 2. AWARD AND EXECUTION OF CONTRACT.......................................................................... 5 2-01. Award of Contract
2-02. Return of Proposal Guaranties
2-03. Execution of Contract
SECTION 3. SCOPE AND INTENT OF CONTRACT ................................................................................... 5 3-01. Effect of Inspection and Payments
3-02. Effect of Extension of Time
3-03. Extra Work
3-04. Assignment of Contract
3-05. Subcontractors
3-06. Interpretation of Special Provisions and Drawings 3-07. Addenda
3-08. Liability of City Officials
3-09. Dispute Resolution
SECTION 4. BONDS ..................................................................................................................................... 6 4-01. Faithful Performance Bond
4-02. Material and Labor Bond
4-03. Defective Material and Workmanship Bond
4-04. Notification of Surety Companies
SECTION 5. INSURANCE REQUIREMENTS FOR CONTRACTORS......................................................... 6 5-01. Minimum Scope of Insurance
5-02. Minimum Limits of Insurance
5-03. Deductibles and Self-Insured Retentions
5-04. Other Insurance Provisions
5-05. Acceptability of Insurers
5-06. Verification of Coverage
5-07. Subcontractors

RIVERSIDE PARK REGENERATION iv Spec No.24-05
SECTION 6. RESPONSIBILITIES AND RIGHTS OF CONTRACTOR ........................................................ 8 6-01. Legal Address of Contractor
6-02. Office of Contractor at Site
6-03. Attention to Work
6-04. Liability of Contractor
6-05. Protection of Persons and Property
6-06. Protection of City Against Patent Claims
6-07. Protection of Contractor's Work Property
6-08. Regulations and Permits
6-09. Construction Utilities
6-10. Approval of Contractor's Plans
6-11. Suggestions to the Contractor
6-12. Termination of Unsatisfactory Subcontracts
6-13. Preservation of Stakes and Marks
6-14. Assistance to Engineer
6-15. Removal of Condemned Materials and Structures
6-16. Proof of Compliance with Contract
6-17. Errors and Omissions
6-18. Cooperation
6-19. Right of Contractor to Stop Work
6-20. Hiring and Dismissal of Employees
6-21. Wage Rates
6-22. Cleaning Up
6-23. Guaranty
SECTION 7. RESPONSIBILITIES AND RIGHTS OF CITY........................................................................ 12 7-01. Authority of the Engineer
7-02. Inspection
7-03. Surveys
7-04. Rights-of-Way
7-05. Retention of Imperfect Work
7-06. Changes in the Work
7-07. Additional Drawings by City
7-08. Additional and Emergency Protection
7-09. Suspension of Work
7-10. Right of City to Terminate Contract
7-11. Use of Completed Portions
SECTION 8. WORKMANSHIP, MATERIALS AND EQUIPMENT.............................................................. 14 8-01. General Quality
8-02. Quality in Absence of Detailed Specifications
8-03. Materials and Equipment Specified by Name
8-04. Source of Materials
8-05. Storage of Materials
8-06. Drawings, Samples and Tests
SECTION 9. PROSECUTION OF WORK ................................................................................................... 15 9-01. Equipment and Methods
9-02. Time of Completion
9-03. Avoidable Delays
9-04. Unavoidable Delays
9-05. Notice of Delays
9-06. Extension of Time
9-07. Unfavorable Weather and Other Conditions
9-08. Saturday, Sunday, Holiday and Night Work

RIVERSIDE PARK REGENERATION v Spec No.24-05
9-09. Hours of Labor
SECTION 10. PAYMENT............................................................................................................................. 17 10-01. Certification by Engineer
10-02. Progress Estimates and Payment
10-03. Substitution of Securities
10-04. Acceptance
10-05. Final Estimate and Payment
10-06. Delay Payments
10-07. Extra Work and Work Omitted
10-08. Compensation for Extra Work or Work Omitted
10-09. Compensation to the City for Extension of Time
10-10. Liquidated Damages for Delay
SECTION 11. MISCELLANEOUS............................................................................................................... 19 11-01. Notice
11-02. Computation of Time
11-03 Claims Procedure Required by Public Contract Code Section 9204 11-04. Litigation and Forum Selection
11-05. Waiver

TECHNICAL SPECIFICATIONS
SECTION 12. GENERAL INFORMATION.................................................................................................. 22 12-01. Location and Scope of Work
12-02. Arrangement of Technical Specifications
12-03. Arrangement of Plans
12-04. Business Licenses
12-05. Permits
12-06. Standard Specifications and Standard Plans
12-07. Temporary Facilities
12-08. Public Convenience and Safety
12-09. Maintaining Traffic
12-10. Stream Pollution
12-11. Warranties
12-12. Utilities
12-13. Dust Control
12-14. Noise Control
12-15. Watering
12-16. Preconstruction Conference
12-17. Progress Schedule
12-18. Progress Meetings
12-19. Safety Requirements
12-20. Public Notification
SECTION 13. CONSTRUCTION DETAILS................................................................................................. 26 Standard Plan List
Organization

DIVISION I GENERAL PROVISIONS
1 General
2 Bidding
3 Contract Award and Execution

RIVERSIDE PARK REGENERATION vi Spec No.24-05
4 Scope of Work
5 Control of Work
6 Control of Materials
7 Legal Relations and Responsibility to the Public
8 Prosecution and Progress
9 Payment

DIVISION II GENERAL CONSTRUCTION
10 General
11 Welding
12 Temporary Traffic Control
13 Water Pollution Control
14 Environmental Stewardship
15 Existing Facilities
16 Temporary Facilities

DIVISION III EARTHWORK AND LANDSCAPE
17 General
18 Dust Palliative
19 Earthwork
20 Landscape
21 Erosion Control
22 Finishing Roadway

DIVISION IV SUBBASES AND BASES
23 General
24 Stabilized Soils
25 Aggregate Subbases
26 Aggregate Bases
27 Cement Treated Bases
28 Concrete Bases
29 Treated Permeable Bases
30 Reclaimed Pavement
31 Reserved
32 Reserved
33 Reserved
34 Reserved
35 Reserved

DIVISION V SURFACINGS AND PAVEMENTS
36 General
37 Bituminous Seals
38 Reserved
39 Asphalt Concrete
40 Concrete Pavement
41 Existing Concrete Pavement
42 Groove and Grind Concrete
43 Reserved
44 Reserved

DIVISION VI STRUCTURES
45 General
46 Ground Anchors and Soil Nails
47 Earth Retaining Systems

RIVERSIDE PARK REGENERATION vii Spec No.24-05
48 Temporary Structures
49 Piling
50 Prestressing Concrete
51 Concrete Structures
52 Reinforcement
53 Shotcrete
54 Waterproofing
55 Steel Structures
56 Overhead Sign Structures, Standards, and Poles
57 Wood and Plastic Lumber Structures
58 Sound Walls
59 Structural Steel Coatings
60 Existing Structures

DIVISION VII DRAINAGE
61 General
62 Reserved
63 Reserved
64 Plastic Pipe
65 Concrete Pipe
66 Corrugated Metal Pipe
67 Structural Plate Culverts
68 Subsurface Drains
69 Overside Drains
70 Miscellaneous Drainage Facilities
71 Existing Drainage Facilities

DIVISION VIII MISCELLANEOUS CONSTRUCTION
72 Slope Protection
73 Concrete Curbs and Sidewalks
74 Pumping Equipment and Controls
75 Miscellaneous Metals
76 Wells
77 Local Infrastructure
78 Incidental Construction
79 Reserved
80 Fences

DIVISION IX TRAFFIC CONTROL FACILITIES
81 Miscellaneous Traffic Control Devices
82 Signs and Markers
83 Railings and Barriers
84 Markings
85 Reserved

DIVISION X ELECTRICAL WORK
86 General
87 Electrical Systems
88 Reserved – Undergrounding

DIVISION XI MATERIALS
89 Aggregate
90 Concrete
91 Paint
92 Asphalt Binders

RIVERSIDE PARK REGENERATION viii Spec No.24-05
93 Reserved
94 Asphaltic Emulsions
95 Epoxy
96 Geosynthetics
97 Reserved
98 Reserved

DIVISION XII BUILDING CONSTRUCTION
99 Building Construction
SECTION 14. EXCLUSIONS FROM GENERAL CONDITIONS............................................................... 155 14-01. Provisions to be Excluded from General Conditions SECTION 15. AMENDMENTS TO GENERAL CONDITIONS.................................................................. 155 15-01. Provisions of General Conditions to be Amended
SECTION 16. FEDERAL REQUIREMENTS FOR FEDERAL-AID CONSTRUCTION PROJECTS........ 156

CERTIFICATES AND DOCUMENTS
BID SUBMITTAL CHECKLIST.................................................................................................................... 182 PROPOSAL .......................................................................................................................................... 183 BIDDING SCHEDULE................................................................................................................................. 184 FAIR EMPLOYMENT PRACTICES CERTIFICATION ............................................................................... 195 WORKER'S COMPENSATION CERTIFICATE.......................................................................................... 196 CERTIFICATE OF NONDISCRIMINATION IN EMPLOYMENT................................................................. 197 LIST OF PROPOSED SUBCONTRACTORS............................................................................................. 198 STATEMENT OF EXPERIENCE OF BIDDER ........................................................................................... 199 SIGNATURE OF BIDDER........................................................................................................................... 200 BIDDER'S BOND ........................................................................................................................................ 201 NON-COLLUSION AFFIDAVIT................................................................................................................... 202 EEO CERTIFICATION ………………………………………………………………………..…………………203 DEBARMENT AND SUSPENSION CERTIFICATION ………………………………………………………204 NONLOBBYING CERTIFICATION FOR FEDERAL AID CONTRACTS ………………………………….205 EXHIBIT 12-B BIDDER’S LIST OF SUBCONTRACTORS…………………………………………………..209 EXHIBIT 15-G CONSTRUCTION CONTRACT DBE COMMITMENT………………………………………211 EXHIBIT 15-H: PROPOSER/CONTRACTOR GOOD FAITH EFFORTS…………………………………..213 PUBLIC CONTRACT CODE SECTION 10285.1 STATEMENT…………………………………..…………216

RIVERSIDE PARK REGENERATION ix Spec No.24-05
PUBLIC CONTRACT CODE SECTION 10162 STATEMENT…………………………………….…………217 PUBLIC CONTRACT CODE SECTION 10232 STATEMENT……………………………………………….218 AGREEMENT 219
INDEMNIFICATION AGREEMENT……………………………………………………………………………..223 EXAMPLE BOND FORMS........................................................................................................................ 224 DIRECTIONS FOR PREPARATION OF PERFORMANCE AND MATERIAL AND LABOR BOND ........ 228 DEFECTIVE MATERIAL AND WORKMANSHIP (MAINTENANCE) BOND ............................................ 229

INSURANCE CERTIFICATES AND ENDORSEMENT FORMS
APPENDICES:

APPENDIX 1: ADDITIONAL UNDERGROUNDING SPECIFICATIONS
APPENDIX 3: SWPPP
APPENDIX 4: AQUATIC RESPOURCES DELINEATION REPORT
APPENDIX 5: HABITAT ASSESSMENT REPORT
APPENDIX 6: SOIL SAMPLING REPORT
APPENDIX 7: IS/MND & NOC
APPENDIX 8: SOIL SAMPLING REPORT

RIVERSIDE PARK REGENERATION x Spec No.24-05

CITY OF UKIAH, MENDOCINO COUNTY, CALIFORNIA

NOTICE TO BIDDERS FOR

RIVERSIDE PARK REGENERATION
SPECIFICATION NO. 24-05
NOTICE IS HEREBY GIVEN that sealed standard proposals for RIVERSIDE PARK REGENERATION will be received at the Office of the City Clerk, Ukiah Civic Center, 300 Seminary Avenue, Ukiah California until 2:00 p.m. on _______, ____, 20___, at which time, or as soon thereafter as possible, they will be publicly opened and read.

Bids shall be addressed to the City Clerk and shall be endorsed “RIVERSIDE PARK REGENERATION.” Bids are required for the entire work described herein. No fax bids will be accepted.

ENGINEER'S ESTIMATE OF QUANTITIES
Item
No.

Description Quantity Unit of
Measure
1 Mobilization, Demobilization, and Final Cleanup 1 LS
2 Storm Water Pollution Prevention Plan (SWPPP) 1 LS
3 Storm Water Sampling and Analysis 1 LS
4 Temporary Water Pollution Control Measures 1 LS
5 Progress Schedule (Critical Path Method) 1 LS
6 Construction Area Signs 1 LS
7 Construction Survey 1 LS
8 Remove Debris Material 1 LS
9 Clearing and Grubbing 1 LS
10 Remove Tree and Stump 3 EA
11 Soil Export (Contaminated Soil) 1 LS
12 Tree Protection 1 LS
13 Grading (Allowance) 25,000 CY
14 Bentonite 552 CY
15 Soil Amendment Placement 1 LS
16 Basalt Chip 28 CY
17 Planting 1 LS
18 Hydroseed 6 ACRE
19 Irrigation 1 LS
20 Plant Establishment Work 1 LS

BID ALTERNATES
Item
No.

Description Quantity Unit of
Measure
A1 Boulder Placement 9 EA

RIVERSIDE PARK REGENERATION xi Spec No.24-05

RIVERSIDE PARK REGENERATION xii Spec No.24-05
Plans and Special Provisions may be inspected and/or copies obtained from the City’s website at www.cityofukiah.com/purchasing. No bid will be considered unless it is made on the forms furnished by the City and is made in accordance with the details of the Special Provisions. Each bidder must be licensed as required by law. Further information regarding the work or these specifications can be obtained by calling Mary Horger, Procurement Manager at (707) 463-6233 or by email at [email protected].

The City Council reserves the right to reject any or all bids and to determine which proposal is, in its opinion, the lowest responsive bid by a responsible bidder and which it deems in the best interest of the City to accept. The City Council also reserves the right, but not the obligation, to waive any irregularity or failure to strictly comply with the bidding requirements, that the City determines in the reasonable exercise of its discretion does not provide the bidder with a competitive advantage over other bidders.

This project is subject to the “Buy America” provisions of the Surface Transportation Assistance Act of 1982 as amended by the Intermodal Surface Transportation Efficiency Act of 1991.

No contractor or subcontractor may be listed on a bid proposal for a public works unless registered with the Department of Industrial Relations (“DIR”) pursuant to Labor Code section 1725.5 except as allowed. under Labor Code section 1771.1. The prime contractor shall be responsible for posting job site notices as prescribed by regulation. This project is subject to compliance monitoring and enforcement by the DIR.

Pursuant to provisions of Section 1770, including amendments thereof, of the Labor Code of the State of California, the DIR Director has ascertained the general prevailing rate of wages for straight time, overtime, Saturdays, Sundays and Holidays including employer payment for health and welfare, vacation, pension and similar purposes for the City of Ukiah. Copies of his General Prevailing Wage Determination are available on the Internet at web address: http://www.dir.ca.gov/DLSR/PWD/.

The Federal minimum wage rates for this project as predetermined by the United States Secretary of Labor are set forth in the Bid Book and in copies of this book that may be examined at the offices described above where project plans, special provisions, and bid forms may be seen. Addenda to modify the Federal minimum wage rates, if necessary, will be issued to holders of Bid book. Future effective general prevailing wage rates, which have been predetermined and are on file with the California Department of Industrial Relations are referenced but not printed in the general prevailing wage rates. Attention is directed to the Federal minimum wage rate requirements in the Bid book. If there is a difference between the minimum wage rates predetermined by the Secretary of Labor and the general prevailing wage rates determined by the Director of the California Department of Industrial Relations for similar classifications of labor, the Contractor and subcontractors shall pay not less than the higher wage rate.

The Department will not accept lower State wage rates not specifically included in the Federal minimum wage determinations. This includes "helper" (or other classifications based on hours of experience) or any other classification not appearing in the Federal wage determinations. Where Federal wage determinations do not contain the State wage rate determination otherwise available for use by the Contractor and subcontractors, the Contractor and subcontractors shall pay not less than the Federal minimum wage rate, which most closely approximates the duties of the employees in question.

The prime contractor for the work herein shall possess a current, valid State of California, Class A (General Engineering) Contractor's License. Pursuant to California Public Contract Code §22300, this contract includes provisions that allow substitutions of certain types of securities in lieu of the City withholding a portion of the partial payments due the Contractor to insure performance under this contract.

By order of the City Council, City of Ukiah, County of Mendocino, State of California.

Dated:________________________ ________________________________________ Kristine Lawler, City Clerk, City of Ukiah, California
PUBLISH TWO TIMES:

RIVERSIDE PARK REGENERATION 1 Spec No.24-05

INSTRUCTIONS TO BIDDERS
RIVERSIDE PARK REGENERATION shall be performed in accordance with the Plans and Special Provisions therefor adopted, to which special reference is hereby made.

Each bidder must supply all the information required by the bid documents and Special Provisions.

Minority business enterprises will be afforded full opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color or national origin in consideration for an award of any contract entered into pursuant to this advertisement. Women will be afforded equal opportunity in all areas of employment. However, the employment of women shall not diminish the standards or requirements for the employment of minorities.

All proposals or bids shall be accompanied by a cashier's check or certified check payable to the order of the City of Ukiah amounting to 10 percent of the bid, or by a bond in said amount and signed by the bidder and a corporate surety, payable to said City. Said check shall be forfeited, or said bond shall become payable to said City in case the bidder depositing the same does not, within fifteen (15) days after written notice that the contract has been awarded to him: (a) enter into a contract with the City and (b) furnish certificates of insurance and endorsements, a bond of faithful performance and a payment bond as described in the Special Provisions.

No bidder shall withdraw his or her bid for a period of thirty (30) calendar days after the date set by the City for the opening thereof.

The Contractor and any subcontractors shall each possess a valid City of Ukiah Business License prior to the start of any work.

The Contractor shall furnish a project schedule to the Engineer prior to the start of any work and start work as scheduled.

The work is to be completed within 180 working days. The Contractor will pay to the City the sum of five thousand ($5000.00) dollars per day for each and every calendar day delay beyond the time prescribed.

The staff shall notify a bidder by telephone, email or fax, if it intends to recommend the rejection of the bidder’s bid. Any bid protest must be filed with the City Clerk not more than five calendar days following the bid opening, or 2 calendar days following notice that staff is recommending the rejection of a bid. If any such timely written protest is filed, all bidders shall be provided a copy of the protest within 2 calendar days of its receipt, which may be delivered to the bidders as an email attachment or by fax. All such bidders may file with the City Manager a written objection or other response to the protest.

All objections or responses filed not more than 5 days after receipt of the written protest will be presented to the City Council at its next regular meeting occurring not less than 12 calendar days following the bid opening. The City Council will resolve the bid protest at that meeting based on the written protest, any staff recommendation and all timely written objections and responses. In accordance with the Brown Act, any person may address the City Council on this item during the meeting.

The City Council action on the protest shall represent a final decision by the City on the protest.

The BIDDER is advised that this is a federal and state funded project, and as such subject to substantial special provisions and requirements. The BIDDER must ensure that all state and federal provisions are read, understood and complied with during the duration of the project, particularly regarding DBE (see definition, below) issues and related Good Faith effort. In the case of discrepancies between City of Ukiah and federal requirements, federal shall prevail.

Examination of Site, Drawings, Etc.

Each bidder shall visit the site of the proposed work and fully acquaint himself with local conditions, construction and labor required so that he or she may fully understand the facilities, difficulties and restrictions attending the execution of the work under the Contract. Bidders shall thoroughly examine and be familiar with the Plans and Special Provisions. The failure of any bidder to receive or examine any form, instrument, addendum, or other document, or to visit the site and acquaint himself with conditions there existing, shall in no way relieve the bidder from any obligation with respect to his or her proposal or to the contract. The drawings for the work show conditions as they are supposed or believed by the Engineer to exist; but, it is neither intended nor shall it be inferred that the conditions as shown thereon constitute a representation by the Engineer, the City or its officers that such conditions are actually existent, nor shall the City, the Engineer or any of their

RIVERSIDE PARK REGENERATION 2 Spec No.24-05
officers or representatives be liable for any loss sustained by the Contractor as a result of a variance between the conditions shown on the drawings and the conditions actually revealed during the progress of the work or otherwise.

The bidder's attention is directed to the possible existence of obstructions and public improvements within the limits of the work or adjacent thereto, which may or may not be shown on the Drawings. Any bid shall take into consideration that conditions may exist underground or otherwise that are not known to the City or easily detected during a site inspection that could impact the time or cost of completing the project. The City expects the bids to anticipate such conditions so that it can know for budgeting and other purposes the total cost to complete the project before accepting a bid and undertaking the legal obligation to construct the project. In awarding the contract the City relies on the contractor’s representation that its bid anticipates differing site conditions and the additional time or cost that such conditions may necessitate.

The bidder shall investigate to his or her satisfaction the conditions to be encountered, the character, quality and quantities of work to be performed and materials to be furnished and the requirements of the Plans, Special Provisions, Standard Specifications, Standard Plans, and Contract Documents. The submission of a proposal shall be considered conclusive evidence that the bidder has made such examination and has accepted the project workplace as a safe workplace to perform the work of the Contract.

Bidder Inquiries and Questions
Inquiries and questions must be submitted in writing via fax or email to the following designated contact person:

Mary Horger, Procurement Manager
Fax: (707) 313-3621
Email: [email protected]
The City reserves the right to not respond to inquiries or questions submitted within 3 business days of the bid opening.

Location of the Work
All of the work to be performed is within the City of Ukiah at Riverside Park, 1281 E. Gobbi Street.

RIVERSIDE PARK REGENERATION 3 Spec No.24-05

GENERAL CONDITIONS
SECTION 1. PROPOSAL REQUIREMENTS AND GENERAL CONDITIONS 1-01. Definitions. Whenever any word or expression defined in this section, or pronoun used in its stead, occurs in these contract documents, it shall have and is mutually understood to have the meaning given:
a. "City of Ukiah" or "City" shall mean the City of Ukiah, Mendocino County, California, acting through its City Council or any other board, body, official or officials to which or to whom the power belonging to the Council shall by virtue of any act or acts, hereafter pass or be held to appertain. b. "Engineer" shall mean the Engineer duly and officially appointed by the City to supervise and direct the work of construction under this contract, acting personally or through agents or assistants duly authorized by him, such agents or assistants acting within the scope of the particular duties entrusted to them. c. "Inspector" shall mean the engineering or technical inspector or inspectors duly authorized or appointed by the Engineer, limited to the particular duties entrusted to him or her or them. d. "Contractor" shall mean the party entering into contract with the City of Ukiah for the performance of work covered by this contract and his or her authorized agents or legal representatives. e. "Date of signing of contract" or words equivalent thereto, shall mean the date upon which this contract, with the signature of the Contractor affixed, together with the prescribed bonds, shall be or shall have been delivered to the City or its duly authorized representatives. f. "Day" or "days", unless herein otherwise expressly defined, shall mean a calendar day or days of twentyfour hours each. g. "The work" shall mean and include all the work specified, indicated, shown or contemplated in the contract to construct the improvement, including all alterations, amendments or extensions thereto made by contract change order or other written orders of the Engineer.
h. "Contract drawings", "drawings", "plans" shall mean and include 1) all drawings or plans which may have been prepared by or on behalf of the City, as a basis for proposals, when duly signed and made a part of this contract by incorporation or reference, 2) all drawings submitted in pursuance of the terms of this contract by the successful bidder with his or her proposal and by the Contractor to the City if and when approved by the Engineer and 3) all drawings submitted by the Engineer to the Contractor during the progress of the work as provided for herein.
i. Where "as shown", "as indicated", "as detailed" or words of similar import are used, it shall be understood that reference to the drawings accompanying these Special Provisions is made unless stated otherwise.

Where "as directed", "as permitted", "approved" or words of similar import are used, it shall be understood that the direction, requirements, permission, approval or acceptance of the Engineer is intended unless stated otherwise.

As used herein, "provide" or "install" shall be understood to mean "provide or install complete in place", that is, "furnish and install". "Shall" is mandatory; "may" is permissive. 1-02. Examination of Plans, Special Provisions and Site of Work. The bidder shall examine carefully the Proposal, Plans, Special Provisions, Contract forms and the site of the work contemplated therefor. It will be assumed that the bidder has investigated to his or her satisfaction the conditions to be encountered and the character, quality and requirements of all Plans, Special Provisions, Standard Specifications, and Standard Plans involved. 1-03. Proposal. Bids shall be made on the blank forms prepared by the City. All bids shall give the prices bid, both in writing and in figures and shall be signed by the bidder or his or her authorized representative, with his or her address. If the bid is made by an individual or partner, his or her name and the post office address of his or her business or partnership, along with his or her signature or the signature of one or more partners must be shown; if made by a corporation, the bid shall show the name of the state under the laws of which the corporation is chartered, the name of the corporation and the title of the person who signs on behalf of the corporation.

RIVERSIDE PARK REGENERATION 4 Spec No.24-05
Each proposal shall be enclosed in a sealed envelope, endorsed as specified in the notice to bidders. Bidders are warned against making erasures or alterations of any kind and proposals which contain omissions, erasures, conditions, alterations, additions not called for, additional proposals or irregularities of any kind may be rejected. 1-04. Withdrawal of Bids. Any bid may be withdrawn at any time prior to the hour fixed in the notice to bidders for the openings of bids, provided that a request in writing, executed by the bidder or his or her duly authorized representative, for the withdrawal of such bid is filed with the City. The withdrawal of a bid will not prejudice the right of a bidder to file a new bid.
1-05. Public Opening of Bids. Bids will be opened and read publicly at the time and place indicated in the notice to bidders. Bidders or their agents are invited to be present. 1-06. Bid Guaranty. Each bid must be accompanied by a certified check, cashier's check or bidder's bond executed by an admitted surety insurer, payable to the order of the City of Ukiah in an amount not less than 10 percent of the bid as a guarantee that the bidder will enter into a contract, if awarded the work. 1-07. Qualification of Bidders. No contractor or subcontractor may be listed on a bid proposal for a public works project (submitted on or after March 1, 2015) unless registered with the Department of Industrial Relations pursuant to Labor Code section 1725.5 [with limited exceptions from this requirement for bid purposes only under Labor Code section 1771.1(a)].

No contractor or subcontractor may be awarded a contract for public work on a public works project (awarded on or after April 1, 2015) unless registered with the Department of Industrial Relations pursuant to Labor Code section 1725.5. The prime contractor shall be responsible for posting job site notices as prescribed by regulation. This project is subject to compliance monitoring and enforcement by the Department of Industrial Relations.

Each bidder shall be licensed under the provisions of Chapter 9, Division 3 of the Business and Professions Code and shall be skilled and regularly engaged in the general class or type of work called for under this contract. A statement setting forth this experience and business standing shall be submitted by each bidder on the form provided herewith. It is the intention of the City to award a contract only to a bidder who furnishes satisfactory evidence that he or she has the requisite experience and ability and that he or she has sufficient capital, facilities and equipment to enable him or her to prosecute the work successfully and promptly within the time and in the manner agreed.

In determining the degree of responsibility to be credited to a bidder, the City may weigh evidence that the bidder or his or her personnel charged with the responsibility in the work, has performed satisfactorily other contracts of like nature and magnitude or comparable difficulty at similar rates of progress. 1-08. Disqualification of Bidders. More than one bid from an individual business, partnership, corporation or association, under the same or different names, will not be considered. Reasonable grounds for believing that any bidder is financially interested in more than one bid for the work will cause the rejection of all bids in which he or she is so interested. If there is reason to believe that collusion exists among the bidders, none of the participants in such collusion will be considered. Bids in which the prices obviously are unbalanced may be rejected. 1-09. Identification of Subcontractors. All bids shall comply with the Subletting and Subcontracting Fair Practices Act (Public Contract Code Section 4100 and following) and shall set forth:
(a) The name and the location of the place of business of each subcontractor who will perform work or labor, or render service to the prime contractor in or about the construction of the work, or to a subcontractor licensed by the State of California who, under subcontract to the prime contractor, specially fabricates and installs a portion of the work according to detailed drawings contained in the plans and Special Provisions, in an amount in excess of onehalf of 1 percent of the prime contractor's total bid. (b) The portion of the work which will be done by each such subcontractor. The prime contractor shall list only one subcontractor for each such portion defined by the prime contractor in his or her bid. 1-10. General Provisions of the Standard Specifications. All provisions of the General Provisions, Sections 1 through 11, of the Standard Specifications, shall be applicable to the contract except as modified by these Special Provisions. The Standard Specifications are set forth in Section 12-06 of these Special Provisions. 1-11. Addenda. If it becomes necessary to revise any part of these plans and specifications after they have been released, the City will issue an addendum containing the revision. All addenda will be posted on the City’s website at

RIVERSIDE PARK REGENERATION 5 Spec No.24-05
www.cityofukiah.com/purchasing with the rest of the bid documents. Anyone who intends to submit a bid in response to this Request for Bid must check the website frequently for any posted addenda. Anyone submitting a bid will be deemed to have seen and agreed to be bound by the posted addenda.

SECTION 2. AWARD AND EXECUTION OF CONTRACT
2-01. Award of Contract. Award of the contract, if awarded, will be to the lowest responsible base bid which complies with all the specified requirements. The award, if made, will be made within thirty (30) days after opening of the bids. The City reserves the right to reject any and all bids and to waive any irregularity in the proposal not pertaining to cost. 2-02. Return of Proposal Guaranties. All bid guaranties will be held until the contract has been fully executed, after which they will be returned upon request to the respective bidders whose bids they accompany. 2-03. Execution of Contract. The contract agreement shall be executed in duplicate by the successful bidder and returned, together with the contract bonds, insurance certificates and endorsements, within fifteen (15) days after written notice of the award of the contract. After execution by the City; one copy shall be filed with the City and one copy shall be returned to the Contractor. If the bidder fails or refuses to enter into the contract agreement within the required time, then the bid guaranty accompanying the bid shall be forfeited to the City.

SECTION 3. SCOPE AND INTENT OF CONTRACT
3-01. Effect of Inspection and Payments. Neither the inspection by the Engineer or an inspector, nor any order, measurement or approved modification, nor certificate or payment of money, nor acceptance of any part or whole of the work, nor any extension of time, nor any possession by the City or its agents, shall operate as a waiver of any provision of this contract or of any power reserved therein to the City, or of any right to damages thereunder; nor shall any breach of this contract be held to be a waiver of any subsequent breach. All remedies shall be construed as cumulative. 3-02. Effect of Extension of Time. The granting of any extension of time on account of delays which, in the judgement of the City, are avoidable delays shall in no way operate as a waiver on the part of the City of its rights under this contract. 3-03. Extra Work. If extra work orders are given in accordance with provisions of this contract, such work shall be considered a part hereof and shall be subject to each and all of its terms and requirements. 3-04. Assignment of Contract. The contract may be assigned or sublet in whole or in part only upon the written consent of the City acting through its authorized agents. Consent will not be given to any proposed assignment which would relieve the original contractor or its surety of their responsibilities under the contract nor will the Engineer consent to any assignment of a part of the work under the contract.
3-05. Subcontractors. The Contractor shall be as fully responsible for the acts and omissions of his or her subcontractors and of persons either directly or indirectly employed by them, as he or she is for the acts and omissions of persons directly employed by him.

The Contractor shall cause appropriate provisions to be inserted in all subcontracts relative to the work to bind subcontractors to the terms of this Contract which are applicable to the work of subcontractors.

Nothing contained in this contract shall be construed to create or shall be relied upon to create any contractual relationship between any subcontractor and the City and no action may be brought by any subcontractor against the City based on this contract.
3-06. Interpretation of Special Provisions and Drawings. The Special Provisions and the Contract Drawings are intended to be explanatory of each other. Any work indicated in the Contract Drawings and not in the Special Provisions, or vice versa, is to be executed as if indicated in both. In case of a discrepancy or conflict between the Technical Specifications and Contract Plans, the Technical Specifications shall govern. All work shown on the Contract Drawings, the dimensions of which are not figured, shall be accurately followed to the scale to which the drawings are made, but figured dimensions are in all cases to be followed, where given, though they differ from scaled measurements. Large scale drawings shall be followed in preference to small scale drawings. Should it appear that the work to be done, or any of the matters relative thereto, are not sufficiently detailed or explained in these contract documents, including the contract drawings, the Contractor shall apply to the Engineer for such further explanations as may be necessary and shall conform thereto as part of this contract, so far as may be consistent with the terms of this contract. In the event of any doubt or questions arising

RIVERSIDE PARK REGENERATION 6 Spec No.24-05
respecting the true meaning of the Special Provisions, reference shall be made to the Engineer and his or her decision thereon shall be final. If the Contractor believes that a clarification or interpretation justifies an increase in the contract price or contract time, the Contractor must comply with the written notice provisions of Sections 9-05 and 10-07 of these Special Provisions. Contractor’s attention is directed to Section 12-06 of the Technical Specifications regarding the Standard Specifications and Standard Plans.
3-07. Addenda. If it becomes necessary to revise any part of these plans and specifications after they have been released, the City will issue an addendum containing the revision. All addenda will be posted on the City’s website at www.cityofukiah.com/purchasing with the rest of the bid documents. Anyone who intends to submit a bid in response to this Request for Bid much check the website frequently for any posted addenda. Anyone submitting a bid will be deemed to have seen and agreed to be bound by the posted addenda. 3-08. Liability of City Officials. No city official, nor the Engineer, nor any authorized assistant of any of them, shall be personally responsible for any liability arising under this contract. 3-09. Dispute Resolution. Claims of $375,000 or less by the Contractor that arise under this Contract are subject to the mandatory dispute resolutions provisions in Public Contract Code Sections 20104-20104.6.

SECTION 4. BONDS
4-01. Faithful Performance Bond. As a part of the execution of this contract, the Contractor shall furnish a bond of a surety company or other securities providing equivalent protection such as cash, letter of credit, or certificates of deposit, acceptable to the City, conditioned upon the faithful performance of all covenants and stipulations under this contract. The amount of the bond shall be 100 percent of the total contract price, as this sum is set forth in the agreement. 4-02. Material and Labor Bond. As a part of the execution of this contract, the Contractor shall furnish a bond of a surety company or other securities providing equivalent protection such as cash, letter of credit or certificates of deposit acceptable to the City in a sum not less than 50 percent of the total contract price, as this sum is set forth in the agreement for the payment in full of all persons, companies or corporations who perform labor upon or furnish materials to be used in the work under this contract, in accordance with the provisions of Sections 3247 through 3252 inclusive of the Civil Code of the State of California and any acts amendatory thereof.
4-03. Defective Material and Workmanship Bond. As a condition precedent to the completion of this contract, the Contractor shall furnish a bond of a surety company acceptable to the City in an amount not less than 5 percent (5%) of the final contract price, to hold good for a period of one (1) year after the completion and acceptance of the work, to protect the City against the results of defective materials, workmanship and equipment during that time. This bond shall be delivered to the City before the final payment under this contract will be made. 4-04. Notification of Surety Companies. The surety companies shall familiarize themselves with all of the conditions and provisions of this contract and they waive the right of special notification of any change or modification of this contract or of extension of time, or decreased or increased work, or of the cancellation of the contract, or of any other act or acts by the City or its authorized agents, under the terms of this contract; and failure to so notify the aforesaid surety companies of changes shall in no way relieve the surety companies of their obligation under this contract.

SECTION 5. INSURANCE REQUIREMENTS FOR CONTRACTORS
(WITH CONSTRUCTION RISKS)
Contractor shall procure and maintain for the duration of the contract insurance against claims for injuries to persons or damages to property which may arise from or in connection with the performance of the work hereunder by the Contractor, his or her agents, representatives, employees or subcontractors. 5-01. Minimum Scope of Insurance
Coverage shall be at least as broad as:

1. Insurance Services Office Commercial Liability Coverage (occurrence form CG 0001).

2. Insurance Services Office form number CA 0001 (Ed. 1/87) covering Automobile Liability, code 1 (any auto).

3. Worker's Compensation insurance as required by the State of California and Employer's Liability Insurance.

RIVERSIDE PARK REGENERATION 7 Spec No.24-05

4. Course of Construction insurance covering for “all risks” of loss. 5-02. Minimum Limits of Insurance
Contractor shall maintain limits no less than:

1. General Liability: $1,000,000 per occurrence for bodily injury, personal injury and property damage including operations, products and completed operations. If Commercial General Liability Insurance or other form with a general aggregate limit is used, either the general aggregate limit shall apply separately to this project/location or the general aggregate limit shall be twice the required occurrence limit.

2. Automobile Liability: $1,000,000 per accident for bodily injury and property damage.

3. Employer's Liability: $1,000,000 per accident for bodily injury and property damage.

4. Course of Construction: Completed value of the project with no co-insurance penalty provisions. 5-03. Deductibles and Self-insured Retentions. Any deductibles or self-insured retentions must be declared to and approved by the City. At the option of the City, either: the insurer shall reduce or eliminate such deductibles or self-insured retentions as respects the City, its officers, officials, employees and volunteers; or the Contractor shall provide a financial guarantee satisfactory to the City guaranteeing payment of losses and related investigations, claim administration and defense expenses.
5-04. Other Insurance Provisions
The general liability and automobile liability policies are to contain, or be endorsed to contain, the following provisions:

1. The City, its officers, officials, employees and volunteers are to be covered as Additional Insured with respect to liability arising out of automobiles owned, leased, hired or borrowed by or on behalf of the contractor; and with respect to liability arising out of work or operations performed by or on behalf of the Contractor including materials, parts or equipment furnished in connection with such work or operations. General liability coverage can be provided in the form of an endorsement to the Contractor's insurance, or as a separate owner's policy.

2. The workers’ compensation policy is to be endorsed with a waiver of subrogation. The insurance company, in its endorsement, agrees to waive all rights of subrogation against the City, its officers, officials, employees and volunteers for losses paid under the terms of this policy which arises from the work performed by the named insured for the City.

3. For any claims related to this project, the Contractor's insurance coverage shall be primary insurance as respects the City, its officers, officials, employees or volunteers. Any insurance or self-insurance maintained by the City, its officers, officials, employees or volunteers shall be excess of the Contractor's insurance and shall not contribute with it.

4. Each insurance policy required by this clause shall be endorsed to state that coverage shall not be canceled by either party, except after thirty (30) days' prior written notice by certified mail, return receipt requested, has been given to the City.

5. Coverage shall not extend to any indemnity coverage for the active negligence of the additional insured in any case where an agreement to indemnify the additional insured would be invalid under Subdivision (b) of Section 2782 of Civil Code.

6. Course of Construction policies shall contain the following provisions:
a.) The City shall be named as loss payee.
b.) The insurer shall waive all rights of subrogation against the City. 5-05. Acceptability of Insurers
Insurance is to be placed with insurers with a current A.M. Best's rating of no less than the following:

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A++ VII A- VIII
A+ VII B++ X
A VII B+ X
5-06. Verification of Coverage. Contractor shall furnish the City with original certificates and amendatory endorsements effecting coverage required by this clause. The endorsements shall be on forms provided by the City or on other than the City's forms, provided those endorsements or policies conform to the requirements. All certificates and endorsements are to be received within 15 days from written notice of contract award, and the work shall not commence until the certificates and endorsements have been approved by the City. The City reserves the right to require complete certified copies of all required insurance policies, including endorsements affecting the coverage required by these Special Provisions at any time.
5-07. Subcontractors. Contractor shall include all subcontractors as insureds under its policies or shall furnish separate certificates and endorsements for each subcontractor. All coverages for subcontractors shall be subject to all of the requirements stated herein.

SECTION 6. RESPONSIBILITIES AND RIGHTS OF CONTRACTOR
6-01. Legal Address of Contractor. Both the address given in the proposal and the Contractor's office in the vicinity of the work are hereby designated as places to either of which drawings, samples, notices, letters or other articles or communications to the Contractor may be mailed or delivered. The delivery at either of these places of any such thing from the City or its agents to the Contractor shall be deemed sufficient service thereof upon the Contractor and the date of such service shall be the date of such delivery. The address named in the proposal may be changed at any time by notice in writing from the Contractor to the City. Nothing herein contained shall be deemed to preclude or render inoperative the service of any drawing, sample, notice, letter or other article or communication to or upon the Contractor personally. 6-02. Office of Contractor at Site. During the performance of this contract, the Contractor shall maintain a suitable office at the site of the work which shall be the headquarters of a representative authorized to receive drawings and any such thing given to the said representatives or delivered at the Contractor's office at the site of work in his or her absence shall be deemed to have been given to the Contractor.
6-03. Attention to Work. The Contractor shall give his or her personal attention to and shall supervise the work to the end that it shall be prosecuted faithfully and when he or she is not personally present on the work, he or she shall at all reasonable times be represented by a competent superintendent or foreman who shall receive and obey all instructions or orders given under this contract and who shall have full authority to execute the same and to supply materials, tools and labor without delay and who shall be the legal representative of the Contractor. The Contractor shall be liable for the faithful observance of any instructions delivered to him or her or to his or her authorized representative. 6-04. Liability of Contractor. The Contractor shall do all of the work and furnish all labor, materials, tools and appliances, except as otherwise herein expressly stipulated, necessary or proper for performing and completing the work herein required in the manner and within the time herein specified. The mention of any specific duty or liability imposed upon the Contractor shall not be construed as a limitation or restriction of any general liability or duty imposed upon the Contractor by this contract, said reference to any specific duty or liability being made herein merely for the purpose of explanation.

The right of general supervision by the City shall not make the Contractor an agent of the City and the liability of the Contractor for all damages to persons or to public or private property, arising from the Contractor's execution of the work, shall not be lessened because of such general supervision.

Until the completion and final acceptance by the City of all the work under and implied by this contract, the work shall be under the Contractor's responsible care and charge. The Contractor shall rebuild, repair, restore and make good all injuries, damages, re-erections and repairs, occasioned or rendered necessary by causes of any nature whatsoever, excepting only acts of God and none other, to all or any portions of the work, except as otherwise stipulated.

To the fullest extent permitted by law, Contractor shall indemnify and hold harmless the City and its officers, directors, agents and employees from and against all claims, damages, losses and expenses including but not limited to attorneys' fees, costs of suit, expert witness fees and expenses and fees and costs of any necessary private investigators arising out of or resulting from the performance of the work, provided that any such claim, damage, loss or expense (1) is attributable to bodily injury, sickness, disease or death, or to injury to or destruction of tangible property, other than the work itself, including the loss of use resulting therefrom and (2) is caused in whole or in part by any act or omission of the Contractor, any subcontractor, or anyone directly or indirectly employed by any of them, or anyone for whose acts any of them may be

RIVERSIDE PARK REGENERATION 9 Spec No.24-05
liable, regardless of whether or not it is caused in part by a party indemnified hereunder, or by the negligence or omission of a party indemnified herein.

In any and all claims against the City or any of its agents or employees by any employee of the Contractor, any subcontractor, anyone directly or indirectly employed by any of them, or anyone for whose acts any of them may be liable, the indemnification obligation shall not be limited in any way by any limitation on the amount or type of damages, compensation or benefits payable by or for the Contractor or any subcontractor under workers' or workmen's compensation acts, disability benefit acts, or other employee benefit acts. The obligation to indemnify shall extend to and include acts of the indemnified party which may be negligent or omissions which may cause negligence.

The City shall have the right to estimate the amount of such damage and to cause the City to pay the same and the amount so paid for such damage shall be deducted from the money due the Contractor under this contract; or the whole or so much of the money due or to become due the Contractor under this contract as may be considered necessary by the City, shall be retained by the City until such suits or claims for damages shall have been settled or otherwise disposed of and satisfactory evidence to that effect furnished to the City.
6-05. Protection of Persons and Property. The Contractor shall furnish such watchman, guards, fences, warning signs, walks and lights as shall be necessary and shall take all other necessary precautions to prevent damage or injury to persons or property.

All property line fences and improvements in the vicinity of the work shall be protected by the Contractor and, if they are injured or destroyed, they and any other property injured by the Contractor, his or her employees or agents, shall be restored to a condition as good as when he or she entered upon the work. 6-06. Protection of City Against Patent Claims. All fees, royalties or claims for any patented invention, article or method that may be used upon or in any manner connected with the work under this contract shall be included in the price bid for the work and the Contractor and his or her sureties shall protect and hold the City, together with all of its officers, agents, servants and employees, harmless against any and all demands made for such fees or claims brought or made on account of this contract. The Contractor shall, if requested by the Engineer, furnish acceptable proof of a proper release from all such fees or classes.

Should the Contractor, his or her agents, servants or employees, or any of them be enjoined from furnishing or using any invention, article, material or appliance supplied or required to be supplied or used under this contract, the Contractor shall promptly substitute other articles, materials or appliance, in lieu thereof, of equal efficiency, quality, finish, suitability and market value and satisfactory in all respects to the Engineer. Or, in the event that the Engineer elects, in lieu of such substitution, to have supplied and to retain and use, any such invention, article, material or appliance, as may by this contract be required to be supplied, in that event the Contractor shall pay such royalties and secure such valid licenses as may be requisite and necessary for the City, its officers, agents, servants and employees, or any of them, to use such invention, article, material or appliance without being disturbed or in any way interfered with by any proceeding in law or equity on account thereof. Should the Contractor neglect or refuse to make the substitution promptly, or to pay such royalties and secure such licenses as may be necessary, then in that event the Engineer shall have the right to make such substitution, or the City may pay such royalties and secure such licenses and charge the cost thereof against any money due to the Contractor from the City or recover the amount thereof from him or her and his or her sureties notwithstanding final payment under this contract may have been made.
6-07. Protection of Contractor's Work Property. The Contractor shall protect his or her work, supplies and materials from damage due to the nature of the work, the action of the elements, trespassers, or any cause whatsoever under his or her control, until the completion and acceptance of the work. Neither the City nor any of its agents assumes any responsibility for collecting indemnity from any person or persons causing damage to the work of the Contractor. 6-08. Regulations and Permits. The Contractor shall secure and pay for all permits, give all notices and comply with all laws, ordinances, rules and regulations bearing on the conduct of the work as drawn and specified. If the Contractor observes that the Plans and Special Provisions are at variance therewith, he or she shall promptly notify the Engineer in writing and any necessary changes shall be adjusted as provided in the contract for changes in the work. The contractor and any subcontractors shall each secure and maintain a valid City of Ukiah Business License. The City of Ukiah will issue a no fee encroachment permit to the Contractor allowing him or her to perform work within City right of way or within City property after the Contract Documents have been executed and insurance certificates and endorsements have been approved by the City.

RIVERSIDE PARK REGENERATION 10 Spec No.24-05
6-09. Construction Utilities. The Contractor shall be responsible for providing for and in behalf of his or her work under this contract, all necessary utilities, such as special connection to water supply, telephones, power lines, fences, roads, watchmen, suitable storage places, etc.
6-10. Approval of Contractor's Plans. The approval by the Engineer of any drawing or any method of work proposed by the Contractor in accordance with paragraph 8-06 shall not relieve the Contractor of any of his or her responsibility for his or her errors therein and shall not be regarded as any assumption of risk or liability by the City or any officer or employee thereof and the Contractor shall have no claim under this contract on account of the failure or partial failure or inefficiency of any plan or method so approved. Such approval shall be considered to mean merely that the Engineer has no objection to the Contractor's using, upon his or her own full responsibility the plan or method approved. 6-11. Suggestions to the Contractor. Any plan or method of work suggested by the Engineer to the Contractor, but not specified or required, if adopted or followed by the Contractor in whole or in part, shall be used at the risk and responsibility of the Contractor; and the Engineer and the City shall assume no responsibility thereof. 6-12. Termination of Unsatisfactory Subcontracts. Should any subcontractor fail to perform in a satisfactory manner the work undertaken by him, such subcontract shall be terminated immediately by the Contractor upon notice from the Engineer.
6-13. Preservation of Stakes and Marks. The Contractor shall preserve carefully bench marks, reference points and stakes and in case of destruction he or she shall replace his or her stakes, reference points and bench marks and shall be responsible for any mistakes that may be caused by their unnecessary loss or disturbance. Contractor’s attention is directed to Section 7-03 of these Special Provisions.
6-14. Assistance to Engineer. At the request of the Engineer the Contractor shall provide men from his or her force and tools, stakes and other materials to assist the Engineer temporarily in making measurements and surveys and in establishing temporary or permanent reference marks. Payment for such materials and assistance will be made as provided for under the caption "Extra Work," provided, however, that the cost of setting stakes and marks carelessly lost or destroyed by the Contractor's employees will be assessed to the Contractor. 6-15. Removal of Condemned Materials and Structures. The Contractor shall remove from the site of the work, without delay, all rejected and condemned materials or structures of any kind brought to or incorporated in the work and upon his or her failure to do so, or to make satisfactory progress in so doing, within forty-eight (48) hours after the service of a written notice from the Engineer, the condemned material or work may be removed by the City and the cost of such removal shall be taken out of the money that may be due or may become due the Contractor on account of or by virtue of this contract. No such rejected or condemned material shall again be offered for use by the Contractor under this Contract. 6-16. Proof of Compliance with Contract. In order that the Engineer may determine whether the Contractor has complied with the requirements of this contract, not readily enforceable through inspection and tests of the work and materials, the Contractor shall, at any time when requested, submit to the Engineer properly authenticated documents or other satisfactory proofs as to his or her compliance with such requirements. 6-17. Errors and Omissions. If the Contractor, in the course of the work, finds any errors or omissions in plans or in the layout as given by survey points and instruction, or if he or she finds any discrepancy between the plans and the physical conditions of the locality, he or she shall immediately inform the Engineer, in writing and the Engineer shall promptly verify the same. Any work done after such discovery, until authorized, will be done at the Contractor's risk. 6-18. Cooperation. The Contractor shall cooperate with all other contractors who may be performing work in behalf of the City and workmen who may be employed by the City on any work in the vicinity of the work to be done under this contract with the work of such contractors or workmen. he or she shall make good promptly, at his or her own expense, any injury or damage that may be sustained by other contractors or employees of the City at his or her hands.

Any difference or conflict which may arise between the Contractor and other contractors, or between the contractor and workmen of the City in regard to their work shall be adjusted and determined by the Engineer. If the work of the Contractor is delayed because of any acts or omissions of any other contractor or of the City, the Contractor shall on that account have no claim against the City other than for an extension of time. 6-19. Right of Contractor to Stop Work. Under the following conditions the Contractor shall have the right, if he or she so desires, to stop the work and terminate the contract upon ten (10) days written notice to the Engineer and recover from the

RIVERSIDE PARK REGENERATION 11 Spec No.24-05
City payment for all work actually performed and for all satisfactory materials actually delivered to the site of the work for permanent incorporation therein, all as may be shown by the estimate of the Engineer. (1) If the work is stopped under an order of any court or other competent public authority for a period of time of three (3) months through no act or fault of the Contractor or of anyone employed by him. (2) If the Engineer fails to issue the monthly certificate for payment in accordance with the terms of this contract.
(3) If the City fails to pay the Contractor within sixty (60) days after it shall have become due, as provided by the terms of this contract, any sum certified by the Engineer or awarded by the City.

All provided that if such action to terminate the contract be not instituted by the Contractor within ten (10) days after the alleged existence of such condition and if written notice of such action be not at that time delivered to the City and the Engineer, then such right shall lapse until another occasion arises according to this section. 6-20. Hiring and Dismissal of Employees. The Contractor shall employ only such foremen, mechanics and laborers as are competent and skilled in their respective lines of work and whenever the Engineer shall notify the Contractor that any person on the work is, in his or her opinion, incompetent, unfaithful, intemperate or disorderly, or refuses to carry out the provisions of this contract, or uses threatening or abusive language to any person on the work representing the City, or is otherwise unsatisfactory, such person shall be discharged immediately. mediately from the work and shall not be re-employed upon it except with the consent of the Engineer. 6-21. Wage Rates.

1. Contractor shall pay all mechanics and laborers employed or working upon the site of the work unconditionally and without subsequent deductions or rebate on any account the full amounts due at the time of payment at wage rates not less than those contained in the applicable prevailing wage determination, regardless of any contractual relationship which may be alleged to exist between the Contractor and subcontractors and such laborers and mechanics.

2. Contractor shall comply with the California Labor Code Section 1775. In accordance with said Section 1775, Contractor shall forfeit as a penalty to the Owner, $50.00 (or the higher minimum penalty as provided in Section 1775(B)(ii) – (iii)) for each calendar day or portion thereof, for each workman paid less than the stipulated prevailing rates for such work or craft in which such workman is employed for any work done under the Contract by him or her or by any subcontractor under him or her in violation of the provisions of the Labor Code and in particular, Labor Code Sections 1770 to 1780, inclusive. In addition to said penalty and pursuant to Section 1775, the difference between such stipulated prevailing wage rates and the amount paid to each workman for each calendar day or portion thereof for which each workman was paid less than the stipulated prevailing wage rate shall be paid to each workman by the Contractor.

3. Pursuant to the provision of Section 1770 of the Labor Code of the State of California, Owner has ascertained the general prevailing rate of wages (which rate includes employer payments for health and welfare, vacation, pension and similar purposes) applicable to the work to be done, for straight time work. The holiday wage rate listed shall be applicable to all holidays recognized in the collective bargaining agreement of the particular craft, classification or type of workmen concerned. Copies of the General Prevailing Wage Determination are available on the Internet at web address: http://www.dir.ca.gov/DLSR/PWD The Contractor shall post the wage determination at the site of work in a prominent place where it can easily be seen by the workers.

4. City will not recognize any claim for additional compensation because the Contractor has paid any rate in excess of the prevailing wage rate obtained by the Contractor. The possibility of wage increases is one of the elements to be considered by the Contractor in determining his or her bid and will not in any circumstances be considered as the basis for a claim against the City.

5. The Labor Commissioner through the Division of Labor Standards Enforcement (DLSE) may at any time require contractors and subcontractors to furnish electronic certified payroll records directly to DLSE. Commencing with contracts awarded or after April 1, 2015, all contractors and subcontractors must furnish electronic certified payroll records directly to the DLSE.

6. Travel and Subsistence Payments.

RIVERSIDE PARK REGENERATION 12 Spec No.24-05
Contractor shall make travel and subsistence payments to each workman needed to execute the work in accordance with the requirements in Section 1773.8 of the Labor Code (Chapter 880, Statutes of 1968).

7. Apprentices.

Attention is directed to the provisions in Sections 1777.5 (Chapter 1411, Statutes of 1968) and 1777.6 of the California Labor Code concerning the employment of apprentices by the Contractor or any subcontractor under him. Contractor and any subcontractor under him or her shall comply with the requirements of said sections in the employment of apprentices.

Information relative to apprenticeship standards, wage schedules and other requirements may be obtained from the Director of Industrial Relations, ex officio the Administrator of Apprenticeship, San Francisco, California, or from the Division of Apprenticeship Standards and its branch offices. 6-22. Cleaning Up. The Contractor shall not allow the site of the work to become littered with trash and waste material, but shall maintain the same in a neat and orderly condition throughout the construction period. The Engineer shall have the right to determine what is or is not waste material or rubbish and the place and manner of disposal.

On or before the completion of the work, the Contractor shall without charge therefore carefully clean out all pits, pipes, chambers or conduits and shall tear down and remove all temporary structures built by him or her and shall remove rubbish of all kind from any of the grounds which he or she has occupied and leave them in first class condition. 6-23. Guaranty. All work shall be guarantied for a period of one year from the date of acceptance by the City. The Contractor shall promptly make all needed repairs arising out of defective materials, workmanship and equipment.

The City is hereby authorized to make such repairs if within ten days after the mailing of a notice in writing to the Contractor or his or her agent, the Contractor shall neglect to make or undertake with due diligence the aforesaid repairs, provided, however, that in case of an emergency where, in the opinion of the City delay would cause serious loss or damage, repairs may be made without notice being sent to the Contractor and the Contractor shall pay the costs thereof.

Pursuant to the provisions of Section 4-03 of these Special Provisions, the Contractor shall furnish a Defective Material and Workmanship Bond in an amount not less than 5 percent of the final contract price, which shall be effective for a period of one (1) year after the completion and acceptance of the work.

SECTION 7. RESPONSIBILITIES AND RIGHTS OF CITY
7-01. Authority of the Engineer. All work done under this contract shall be done in a workmanlike manner and shall be performed to the reasonable satisfaction of the Engineer, who shall have general supervision of all work included hereunder.

To prevent disputes and litigation, the Engineer (1) shall in all cases determine the amount, quality, acceptability and fitness of the several kinds of work and materials which are to be paid for under this contract, (2) shall decide all questions relative to the true construction, meaning and intent of the Special Provisions and Drawings, (3) shall decide all questions which may arise relative to the classifications and measurements of quantities and materials and the fulfillment of this contract and (4) shall have the power to reject or condemn all work or material which does not conform to the terms of this contract. his or her estimate and decision in all matters shall be a condition precedent to an appeal for arbitration, or the right of the Contractor to receive, demand, or claim any money or other compensation under this agreement and a condition precedent to any liability on the part of the City to the Contractor on account of this contract. Whenever the Engineer shall be unable to act, in consequence of absence or other cause, then such engineer as the Engineer or the City shall designate, shall perform any and all of the duties and be vested with any or all of the powers herein given to the Engineer. 7-02. Inspection. The City will provide engineering personnel for the inspection of the work.

The Engineer and his or her representatives shall at all times have access to the work whenever it is in preparation or progress and the Contractor shall provide proper facilities for such access and inspection.

If the Special Provisions, the Engineer's instruction, laws, ordinances, or any public authority require any work to be specially tested or approved, the Contractor shall give the Engineer timely notice of its readiness for inspection and, if the inspection is by an authority other than the Engineer, of the date fixed for such inspection. Inspections by the Engineer shall be promptly made at the source of supply where practicable. If any work shall be covered up without approval or consent of

RIVERSIDE PARK REGENERATION 13 Spec No.24-05
the Engineer, it must, if required by the Engineer, be uncovered for examination and properly restored at the Contractor's expense.

Re-examination of any work may be ordered by the Engineer and, if so ordered, the work must be uncovered by the Contractor. If such work is found to be in accordance with the contract documents, the City shall pay the cost of reexamination and replacement. If such work is not in accordance with the contract documents, the Contractor shall pay such cost.

Properly authorized and accredited inspectors shall be considered to be the representatives of the City limited to the duties and powers entrusted to them. It will be their duty to inspect materials and workmanship of those portions of the work to which they are assigned, either individually or collectively, under instructions of the Engineer and to report any and all deviations from the Drawings, Special Provisions and other contract provisions which may come to their notice. Any inspector may be considered to have the right to order the work entrusted to his or her supervision stopped, if in his or her opinion such action becomes necessary, until the Engineer is notified and has determined and ordered that the work may proceed in due fulfillment of all contract requirements. 7-03. Surveys. Contractor shall furnish all land surveys, establish all base lines and benchmarks and make sufficient detailed surveys needed for working points, lines and elevations. The Contractor shall develop all slope stakes and batter boards. Contractor shall also develop all additional working points, lines and elevations as he or she may desire to facilitate his or her methods and sequence of construction.
7-04. Rights-of-Way. The City will provide all necessary rights-of-way and easements in or beneath which work will be performed by the Contractor under this contract.
7-05. Retention of Imperfect Work. If any portion of the work done or material furnished under this contract shall prove defective and not in accordance with the Plans and Special Provisions, and if the imperfection in the same shall not be of sufficient magnitude or importance to make the work dangerous or undesirable, the Engineer shall have the right and authority to retain such work instead of requiring the imperfect work to be removed and reconstructed, but he or she shall make such deductions therefor in the payments due or to become due the Contractor as may be just and reasonable. 7-06. Changes in the Work. The Engineer shall have the right, in writing, to order additions to, omissions from, or corrections, alterations and modifications in the line, grade, form, dimensions, plan, or kind or amount of work or materials herein contemplated, or any part thereof, either before or after the beginning of construction. However, the arithmetical sum of the cost to the City of additions and subtractions from the work under this contract shall not exceed 10 percent of original contract amount or $5,000, whichever is the greater, unless based upon a supplementary agreement to be made therefore.

The order of such additions, omissions, corrections, alterations and modifications shall be in writing and signed by the Engineer and, in order, shall then be binding upon the Contractor. The Contractor shall proceed with the work as changed and the value of such change shall be determined as provided for in section 10-07 of these Special Provisions.

Such alterations shall in no way affect, vitiate, or make void this contract or any part thereof, except that which is necessarily affected by such alterations and is clearly the evident intention of the parties to this contract. 7-07. Additional Drawings by City. The drawings made a part of this contract at the time of its execution are intended to be fairly comprehensive and to indicate in more or less detail the scope of the work. In addition to these drawings, however, the Engineer shall furnish such additional drawings from time to time during the progress of the work as are necessary to make clear or to define in greater detail the intent of the Special Provisions and the contract drawings and the Contractor shall make his or her work conform to all such drawings. 7-08. Additional and Emergency Protection. Whenever, in the opinion of the Engineer, the Contractor has not taken sufficient precautions for the safety of the public or the protection of the works to be constructed under this contract, or of adjacent structures or property which may be injured by the processes of construction on account of such neglect and whenever, in the opinion of the Engineer, an emergency shall arise and immediate action shall be considered necessary in order to protect public or private, personal or property interest, then and in that event, the Engineer, with or without notice to the Contractor may provide suitable protection to the said interests by causing such work to be done and such material to be furnished as shall provide such protection as the Engineer may consider necessary and adequate.

The cost and expense of such work and material so furnished shall be borne by the Contractor and, if the same shall not be paid on presentation of the bills therefor, then such costs shall be deducted from any amounts due or to become due the Contractor.

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The performance of such emergency work under the direction of the Engineer shall in no way relieve the Contractor from any damages which may occur during or after such precaution has been taken by the Engineer. 7-09. Suspension of Work. The City may at any time suspend the work or any part thereof by giving five (5) days written notice to the Contractor. The work shall be resumed by the Contractor within ten (10) days after the date fixed in the written notice from the City to the Contractor so to do. The City shall reimburse the Contractor for expense incurred by the Contractor in connection with the work under this contract as a result of such suspension.

If the work, or any part thereof, shall be stopped by the notice in writing aforesaid and if the City does not give notice in writing to the Contractor to resume work at a date within ten (10) days of the date fixed in the written notice to suspend, then the Contractor may abandon that portion of the work so suspended and he or she will be entitled to the estimates and payments for all work done on the portions so abandoned, if any, plus 5 percent of the value of the work so abandoned, to compensate for loss of overhead, plant expense and anticipated profit. 7-10. Right of City to Terminate Contract. If the Contractor should be adjudged a bankrupt, or if he or she should make a general assignment for the benefit of his or her creditors, or if a receiver should be appointed on account of his or her insolvency, or if he or she should persistently or repeatedly refuse or should fail, except in cases for which extension of time is provided, to supply sufficient properly skilled workmen or proper materials, or if he or she should fail to make prompt payments to subcontractors or for material or labor, or persistently disregard laws, ordinances or the instructions of the Engineer, or otherwise be guilty of a substantial violation of any provision of the contract, then the City, upon the certificate of the Engineer that sufficient cause exists to justify such action, may, without prejudice to any other right or remedy and after giving the Contractor seven days written notice, terminate the employment of the Contractor and take possession of the premises and of all materials, tools and appliances and finish the work by whatever method the City may deem expedient. In such case, the Contractor shall not be entitled to receive any further payment until the work is finished. If the unpaid balance of the contract price shall exceed the expense of finishing the work, including compensation for additional managerial and administrative services, such excess shall be paid to the Contractor. If such expense shall exceed such unpaid balance, the Contractor shall pay the difference to the City. The expense incurred by the City as herein provided and the damage incurred through the Contractor's default, shall be certified by the Engineer. 7-11. Use of Completed Portions. The City shall have the right to take possession of and use any completed or partially completed portions of the work, notwithstanding the time for completing the entire work or such portions which may not have expired; but such taking possession and using shall not be deemed an acceptance of any work not completed in accordance with the contract documents. If such prior use increases the cost of or delays the work, the Contractor shall be entitled to such extra compensation, or extension of time or both, as the Engineer may determine.

SECTION 8. WORKMANSHIP, MATERIALS AND EQUIPMENT
8-01. General Quality. Materials and equipment shall be new and of a quality equal to that specified or approved. Work shall be done and completed in a thorough and workmanlike manner. 8-02. Quality in Absence of Detailed Specifications. Whenever under this contract it is provided that the Contractor shall furnish materials or manufactured articles or shall do work for which no detailed specifications are set forth, the materials or manufactured articles shall be of the best grade in quality and workmanship obtainable in the market from firms of established good reputation, or, if not ordinarily carried in stock, shall conform to the usual standards for first-class materials or articles of the kind required, with due consideration of the use to which they are to be put. In general, the work performed shall be in full conformity and harmony with the intent to secure the best standard of construction and equipment of the work as a whole or in part.
8-03. Materials and Equipment Specified by Name. Whenever any material or equipment is indicated or specified by patent or proprietary name or by the name of the manufacturer, such specification shall be considered as used for the purpose of describing the material or equipment desired and shall be considered as followed by the words "or approved equal". The Contractor may offer any material or equipment which shall be equal in every respect to that specified, provided that written approval first is obtained from the Engineer. 8-04. Source of Materials. Price, fitness and quality being equal, preference shall be given by the Contractor for supplies grown, manufactured or produced in the State of California and, next, for such products partially produced in this State in accordance with Government Code Section 4332.

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8-05. Storage of Materials. Materials shall be so stored to ensure the preservation of their quality and fitness for the work.

They shall be so located and disposed that prompt and proper inspection thereof may be made. 8-06. Drawings, Samples and Tests. As soon as possible after execution of the contract, the Contractor shall submit to the Engineer, in quintuplicate, sufficient information including, if necessary, assembly and detail drawings to demonstrate fully that the equipment and materials to be furnished comply with the provisions and intent of these Special Provisions and Drawings. If the information thus submitted indicates the equipment or materials is acceptable, the Engineer will return one copy stamped with his or her approval; otherwise, one copy will be returned with an explanation of why the equipment or material is unsatisfactory. The Contractor shall have no claims for damages or for extension of time on account of any delay due to the revision of drawings or rejection of material. Fabrication or other work performed in advance of approval shall be done entirely at the Contractor's risk. After approval of equipment or material, the Contractor shall not deviate in any way from the design and specifications given without the written consent of the Engineer.

When requested by the Engineer, a sample or test specimens of the materials to be used or offered for use in connection with the work shall be prepared at the expense of the Contractor and furnished by him or her in such quantities and sizes as may be required for proper examination and tests, with all freight charges prepaid and with information as to their sources.

All samples shall be submitted before shipment and in ample time to permit the making of proper tests, analyses, or examination before the time at which it is desired to incorporate the material into the work. All tests of materials furnished by the Contractor shall be made by the Engineer. Samples shall be secured and tested whenever necessary to determine the quality of the material.

SECTION 9. PROSECUTION OF WORK
9-01. Equipment and Methods. The work under this contract shall be prosecuted with all materials, tools, machinery, apparatus and labor and by such methods as are necessary to the complete execution of everything described, shown, or reasonably implied. If at any time before the beginning or during the progress of the work, any part of the Contractor's plant or equipment, or any of his or her methods of execution of the work, appear to the Engineer to be unsafe, inefficient, or inadequate to insure the required quality or the rate of progress of the work, he or she may order the Contractor to increase or improve his or her facilities or methods and the Contractor shall comply promptly with such orders; but, neither compliance with such orders nor failure of the Engineer to issue such orders shall relieve the Contractor from his or her obligation to secure the degree of safety, the quality of the work and the rate of progress required of the Contractor. The Contractor alone shall be responsible for the safety, adequacy and efficiency of his or her plant, equipment and methods. 9-02. Time of Completion. The Contractor shall promptly begin the work under this contract and shall complete and make ready for full use all portions of the project made the subject of this contract within the time set forth in the agreement bound herewith.
9-03. Avoidable Delays. Avoidable delays in the prosecution or completion of the work shall include all delays which might have been avoided by the exercise of care, prudence, foresight and diligence on the part of the Contractor. The City will consider as avoidable delays within the meaning of this contract (1) delays in the prosecution of parts of the work, which may in themselves be unavoidable, but do not necessarily prevent or delay the prosecution of other parts of the work nor the completion of the whole work within the time herein specified, (2) reasonable loss of time resulting from the necessity of submitting plans to the Engineer for approval and from the making of surveys, measurements, inspections, and testing and (3) such interruptions as may occur in the prosecution of the work on account of the reasonable interference of other contractors employed by the City which do not necessarily prevent the completion of the whole work within the time herein specified.
9-04. Unavoidable Delays. Unavoidable delays in the prosecution or completion of the work under this contract shall include all delays which may result, through cause beyond the control of the Contractor and which he or she could not have provided against by the exercise of care, prudence, foresight and diligence. Orders issued by the City changing the amount of work to be done, the quantity of material to be furnished or the manner in which the work is to be prosecuted and unforeseen delays in the completion of the work of other contractors under contract with the City will be considered unavoidable delays, so far as they necessarily interfere with the Contractor's completion of the whole of the work. Delays due to normally adverse weather conditions will not be regarded as unavoidable delays. However, truly abnormal amounts of rainfall, temperatures or other weather conditions for the location of the work and time of year may be considered as unavoidable delays if those conditions necessarily cause a delay in the completion of the work. 9-05. Notice of Delays. Whenever the Contractor foresees any delay in the prosecution of the work and, in any event, immediately upon the occurrence of any delay which the contractor regards as an unavoidable delay, he or she shall notify

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the Engineer in writing of the probability of the occurrence of such delay and its cause, in order that the Engineer may take immediate steps to prevent, if possible, the occurrence or continuance of the delay, or, if this cannot be done, may determine whether the delay is to be considered avoidable or unavoidable, how long it continues and to what extent the prosecution and completion of the work are to be delayed thereby. 9-06. Extension of Time. Should any delays occur which the Engineer may consider unavoidable, as herein defined, the Contractor shall, pursuant to his or her application, be allowed an extension of time proportional to said delay or delays, beyond the time herein set forth, in which to complete this contract; and liquidated damages for delay shall not be charged against the Contractor by the City during an extension of time granted because of unavoidable delay or delays.

Any claim by Contractor for a time extension based on unavoidable delays shall be based on written notice delivered to the Engineer within 15 days of the occurrence of the event giving rise to the claim. Failure to file said written notice within the time specified shall constitute a waiver of said claim. Notice of the full extent of the claim and all supporting data must be delivered to the Engineer within 45 days of the occurrence unless the Engineer specifies in writing a longer period. All claims for a time extension must be approved by the Engineer and incorporated into a written change order. 9-07. Unfavorable Weather and Other Conditions. During unfavorable weather and other conditions, the Contractor shall pursue only such portions of the work as shall not be damaged thereby. No portions of the work whose satisfactory quality or efficiency will be affected by any unfavorable conditions shall be constructed while these conditions remain, unless, by special means or precautions approved by the Engineer, the Contractor shall be able to overcome them.

The Contractor shall be granted a time extension of one day for each unfavorable weather day which prevents him or her from placing concrete forms or placing and finishing concrete or asphalt concrete. Such unfavorable weather day is defined as a rain day where precipitation prevents the contractor from performing the work more than four (4) continuous hours within the authorized work period or a temperature day where the ambient temperature is below that specified for the placement of materials associated with the controlling work item for more than four (4) continuous work hours of the authorized work period.
9-08. Saturday, Sunday, Holiday and Night Work. No work shall be done between the hours of 6 p.m. and 7 a.m., nor on Saturdays, Sundays or legal holidays except such work as is necessary for the proper care and protection of work already performed, or except in cases of absolute necessity and in any case only with the permission of the Engineer.

It is understood, however, that night work may be established as a regular procedure by the Contractor if he or she first obtains the written permission of the Engineer and that such permission may be revoked at any time by the Engineer if the Contractor fails to maintain at night adequate force and equipment for reasonable prosecution and to justify inspection of the work.
9-09. Hours of Labor. Eight (8) hours of labor shall constitute a legal day's work and the Contractor or any subcontractor shall not require or permit more than eight hours of labor in a day from any person employed by him or her in the performance of the work under this contract, unless paying compensation for all hours worked in excess of eight (8) hours per day at not less than 1½ times the basic rate of pay. The Contractor shall forfeit to the City, as a penalty, the sum of twenty-five dollars ($25.00) for each workman employed in the execution of the contract by him or her or by any subcontractor, for each calendar day during which such laborer, workman, or mechanic is required or permitted to labor more than eight hours in violation of the provisions of Section 1810 to 1816, inclusive, (Article 3, Chapter 1, Part 7, Division 2) of the Labor Code of the State of California and any acts amendatory thereof.

SECTION 10. PAYMENT
10-01. Certification by Engineer. All payments under this contract shall be made upon the presentation of certificates in writing from the Engineer and shall show that the work covered by the payments has been done and the payments thereof are due in accordance with this contract.
10-02. Progress Estimates and Payment. The Engineer shall, within the first seven (7) days of each month, make an estimate of the value of the work performed in accordance with this contract during the previous calendar month.

The first estimate shall be of the value of the work satisfactorily completed in place and meeting the requirements of the contract. And every subsequent estimate, except the final estimate, shall be of the value of the work satisfactorily completed in place since the last preceding estimate was made; provided, however, that should the Contractor fail to adhere to the program of completion fixed in this contract, the Engineer shall deduct from the next and all subsequent estimates the full

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calculated accruing amount of the liquidated damages to the date of said estimate, until such time as the compliance with the program has been restored.

The estimate shall be signed by the Engineer and, after approval, the City shall pay or cause to be paid to the Contractor in the manner provided by law, an amount equal to 95 percent of the estimated value of the work satisfactorily performed and complete in place.
10-03. Substitution of Securities.

1. At such times that Pubic Contract Code Section 22300 is in effect Contractor may propose the substitution of securities of at least equal market value for any moneys to be withheld to ensure performance under the Contract. Market value shall be determined as of the day prior to the date such substitution is to take place. Such substitution shall be made at the request and expense of the Contractor. The securities shall be one or more of the following types:
(a) Bonds or interest-bearing notes or obligations of the United States, or those for which the faith and credit of the United States are pledged for the payment of principal and interest. (b) Bonds or interest-bearing notes on obligations that are guaranteed as to principal and interest by a federal agency of the United States.
(c) Bonds of the State of California, or those for which the faith and credit of the State of California are pledged for the payment of principal and interest.
(d) Bonds or warrants, including, but not limited to, revenue warrants, of any county, city, metropolitan water district, California water district, California water storage district, irrigation district in the State of California, municipal utility district, or school district of the State of California, which are rated by Moody's or Standard and Poor as A or better.
(e) Bonds, consolidated bonds, collateral trust debentures, consolidated debentures, or other obligations issued by federal land banks or federal intermediate credit banks established under the Federal Farm Loan Act, as amended; debentures and consolidated debentures issued by the Central Bank for Cooperatives and banks for cooperatives established under the Farm Credit Act of 1933, as amended; bonds, or debentures of the Federal Home Loan Bank Board established under the Federal Home Loan Bank Act; and stock, bonds, debentures and other obligations of the Federal National Mortgage Association established under the National Housing Act as amended and bonds of any Federal Home Loan Mortgage Corporation.
(f) Commercial paper of "prime" quality as defined by a nationally recognized organization which rates such securities. Eligible paper is further limited to issuing corporations: (1) organized and operating within the United States; (2) having total assets in excess of five hundred million dollars ($500,000,000); and (3) approved by the Pooled Money Investment Board of the State of California. Purchases of eligible commercial paper may not exceed 180 days' maturity, nor represent more than 10 percent of the outstanding paper of an issuing corporation. (g) Bills of exchange or time drafts on and accepted by a commercial bank, otherwise known as bankers acceptances, which are eligible for purchase by the Federal Reserve System. (h) Certificates of deposits issued by a nationally or state-chartered bank or savings and loan association. (i) The portion of bank loans and obligations guaranteed by the United States Small Business Administration or the United States Farmers Home Administration.
(j) Student loan notes insured under the Guaranteed Student Loan Program established pursuant to the Higher Education Act of 1965, as amended (20 U.S.C. 1001, et seq.) and eligible for resale to the Student Loan Marketing Association established pursuant to Section 133 of the Education Amendments of 1972, as amended (20 U.S.C. 1087-2).
(k) Obligations issued, assumed or guaranteed by International Bank for Reconstruction and Development, the Inter-American Development Bank, the Asian Development Bank, or the Government Development Bank of Puerto Rico.

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(l) Bonds, debentures and notes issued by corporations organized and operating within the United States. Such securities eligible for substitution shall be within the top three ratings of a nationally recognized rating service.

2. The securities shall be deposited with City or with any commercial bank as escrow agent, who shall arrange for transfer of such securities to the Contractor upon satisfactory completion of the contract. Any interest accrued or paid on such securities shall belong to the Contractor and shall be paid upon satisfactory completion of the contract.

The market value of the securities deposited shall at all times be maintained in an amount at least equal, in the sole judgment of City, to the moneys to be withheld pursuant to the Contract Documents to ensure performance of the Contract.

In order to comply with this condition, Contractor shall deposit additional securities as necessary upon request by City or the escrow agent.

3. Upon acceptance of any Proposal that includes substituting securities for amounts withheld to ensure performance, a separate escrow agreement satisfactory in form and substance to City shall be prepared and executed by City, the Contractor and the escrow agent, which may be City. The escrow agreement shall specify, among other matters, value of securities to be deposited; procedures for valuing the securities and for adding or withdrawing securities to maintain the market value of the deposited securities at least equal to the amount of moneys which would otherwise be withheld; the terms and conditions of conversion to cash in case of the default by the Contractor; and terms, conditions and procedure for termination of the escrow. City shall have no obligation to enter any such Agreement that does not provide the City with the unilateral right to convert securities to cash and to gain immediate possession of the cash. 10-04. Acceptance. The work must be accepted by vote of the City Council of the City of Ukiah when the whole shall have been completed satisfactorily. The Contractor shall notify the Engineer, in writing, of the completion of the work, whereupon the Engineer shall promptly, by personal inspection, satisfy himself as to the actual completion of the work in accordance with the terms of the contract and shall thereupon recommend acceptance by the City Council. 10-05. Final Estimate and Payment. The Engineer shall, as soon as practicable after the final acceptance of the work done under this contract, make a final estimate of the amount of work done thereunder and the value thereof.

Such final estimate shall be signed by the Engineer, and after approval, the City shall pay or cause to be paid to the Contractor, in the manner provided by law, the entire sum so found to be due hereunder, after deducting therefrom all previous payments and such other lawful amounts as the terms of this contract prescribe.

In no case will final payment be made in less than thirty-five (35) days after the filing of the notice of completion with the County Recorder.
10-06. Delay Payments. Should any payment due the Contractor or any estimate be delayed, through fault of the City beyond the time stipulated, such delay shall not constitute a breach of contract or be the basis for a claim for damages, but the City shall pay the Contractor interest on the amount of the payment at the rate of 6 percent per annum for the period of such delay. The terms for which interest will be paid shall be reckoned, in the case of any monthly or progress payment, from the twentieth day of the month next succeeding the month in which the work was performed to the date of payment of the estimate; and in the case of the final estimate, from the forty-fifth day after acceptance to the date of payment of the final estimate.

The date of payment of any estimate shall be considered the day on which the payment is offered or mailed as evidenced by the records of the Treasurer of the City. If interest shall become due on any delayed payment, the amount thereof, as determined by the City, shall be added to a succeeding payment. If the interest shall become due on the final payment, it shall be paid on a supplementary voucher to interest or any sum or sums which, by the terms of this contract, the City is authorized to reserve or retain.
10-07. Extra Work and Work Omitted. Whenever corrections, alterations, or modifications of the work under this contract ordered by the Engineer and approved by the City increase the amount of work to be done, such added work shall be known as "extra work"; and when such corrections, alterations, or modifications decrease the amount of work to be done, such subtracted work shall be known as "work omitted".

When the Contractor considers that any changes ordered involve extra work, he or she shall immediately notify the Engineer in writing and subsequently keep him or her informed as to when and where extra work is to be performed and shall make claim for compensation therefor each month not later than the first day of the month following that in which the work claimed to be extra work was performed and he or she shall submit a daily complete statement of materials and labor used and expenses incurred on account of extra work performed, showing allocation of all materials, labor and expenses.

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All such claims shall state the date of the Engineer's written order and the date of approval by the City authorizing the work on account of which claim is made. Unless such notification is made in writing within the time specified and unless complete statements of materials used and expenses incurred on account of such extra work are furnished as above required, the Contractor shall not be entitled to payment on account of extra work and Contractor shall be deemed to have waived the right to make any future claims for compensation for such extra work.

When changes decrease the amount of work to be done, they shall not constitute a claim for damages on account of anticipated profits on the work that may be omitted.
10-08. Compensation for Extra Work or Work Omitted. Whenever corrections, additions, or modifications in the work under this contract change the amount of work to be done or the amount of compensation due the Contractor, excepting increases or decreases in contract items having unit contract prices for each measurable quantity installed in place, and such changes have been ordered in writing by the Engineer and approved by the City prior to the Contractor performing the extra work, then a price may be agreed upon. Failing such an agreement in price, the Contractor shall be compensated for performing extra work pursuant to the provisions of Section 4-1.05 "Changes and Extra Work", and Section 9-1.04,"Force Account" of the Standard Specifications.

This method of determining the price of work shall not apply to the performance of any work which is required or reasonably implied to be performed or furnished under this contract. 10-09. Compensation to the City for Extension of Time. In case the work called for under this contract is not completed within the time limit stipulated herein, the City shall have the right as provided hereinabove, to extend the time of completion thereof. If the time limit be so extended, the City shall have the right to charge to the Contractor and to deduct from the final payment for the work the actual cost to the City of engineering, inspection, superintendence and other overhead expenses which are directly chargeable to the contract and which accrue during the period of such extension, except that the cost of final unavoidable delays shall not be included in such charges. 10-10. Liquidated Damages for Delay. It is agreed by the parties to the contract that time is of the essence and that, in case all the work is not completed before or upon the expiration of the time limit as set forth, damage, other than those cost items identified in section 10-09, will be sustained by the City and that it is and will be impracticable to determine the actual amount of damage by reason of such delay; and it is therefore agreed that the Contractor will pay to the City the sum of five thousand dollars ($5000.00) per day for each and every calendar day's delay beyond the time prescribed.

SECTION 11. MISCELLANEOUS
11-01. Notice. Whenever any provision of the contract documents requires the giving of written notice, it shall be deemed to have been validly given if delivered in person to the individual or to a member of the firm or to an officer of the corporation for whom it is intended, or if delivered at or sent by registered or certified mail, postage prepaid, to the last business address known to the giver of the notice. If mailed, the notice shall be deemed received on the date of delivery stated in the return receipt.
11-02. Computation of Time. When any period of time is referred to in the Contract Documents by days, it shall be computed to exclude the first and include the last day of such period. If the last day of any such period falls on a Saturday or Sunday or on a day made a legal holiday by the law of the applicable jurisdiction, such day shall be omitted from the computation.
11-03. Claims Procedure Required by Public Contract Code Section 9204. This section shall apply to any claim by the Contractor arising in connection with this project in accordance with Public Contract Code Section 9204. a. For purposes of this section "Claim" means a separate demand by the Contractor sent by registered mail or certified mail with return receipt requested, for one or more of the following:
(A) A time extension, including, without limitation, for relief from damages or penalties for delay assessed by the City under this contract.
(B) Payment by the City of money or damages arising from work done by, or on behalf of, the Contractor pursuant to this contract and payment for which is not otherwise expressly provided or to which the Contractor is not otherwise entitled.

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(C) Payment of an amount that is disputed by the City.
b.
(1)
(A) Upon receipt of a claim pursuant to this section, the City shall conduct a reasonable review of the claim and, within a period not to exceed 45 days, shall provide the Contractor a written statement identifying what portion of the claim is disputed and what portion is undisputed. Upon receipt of a claim, a public entity and the contractor may, by mutual agreement, extend the time period provided in this subdivision. (B) The Contractor shall furnish reasonable documentation to support the claim. (C) If the City needs approval from its governing body to provide the Contractor a written statement identifying the disputed portion and the undisputed portion of the claim, and the governing body does not meet within the 45 days or within the mutually agreed to extension of time following receipt of a claim sent by registered mail or certified mail, return receipt requested, the City shall have up to three days following the next duly publicly noticed meeting of the governing body after the 45-day period, or extension, expires to provide the claimant a written statement identifying the disputed portion and the undisputed portion.
(D) Any payment due on an undisputed portion of the claim shall be processed and made within 60 days after the City issues its written statement. If the City fails to issue a written statement, paragraph (3) shall apply. (2)
(A) If the Contractor disputes the City's written response, or if the City fails to respond to a claim issued pursuant to this section within the time prescribed, the Contractor may demand in writing an informal conference to meet and confer for settlement of the issues in dispute. Upon receipt of a demand in writing sent by registered mail or certified mail, return receipt requested, the City shall schedule a meet and confer conference within 30 days for settlement of the dispute.
(B) Within 10 business days following the conclusion of the meet and confer conference, if the claim or any portion of the claim remains in dispute, the City shall provide the claimant a written statement identifying the portion of the claim that remains in dispute and the portion that is undisputed. Any payment due on an undisputed portion of the claim shall be processed and made within 60 days after the public entity issues its written statement. Any disputed portion of the claim, as identified by the contractor in writing, shall be submitted to nonbinding mediation, with the City and the Contractor sharing the associated costs equally. The City and Contractor shall mutually agree to a mediator within 10 business days after the disputed portion of the claim has been identified in writing. If the parties cannot agree upon a mediator, each party shall select a mediator and those mediators shall select a qualified neutral third party to mediate with regard to the disputed portion of the claim. Each party shall bear the fees and costs charged by its respective mediator in connection with the selection of the neutral mediator. If mediation is unsuccessful, the parts of the claim remaining in dispute shall be subject to applicable procedures outside this section.
(C) For purposes of this section, mediation includes any nonbinding process, including, but not limited to, neutral evaluation or a dispute review board, in which an independent third party or board assists the parties in dispute resolution through negotiation or by issuance of an evaluation. Any mediation utilized shall conform to the timeframes in this section.
(D) Unless otherwise agreed to in writing by the City and the Contractor, the mediation conducted pursuant to this section shall excuse any further obligation under Public Contract Code Section 20104.4 to mediate after litigation has been commenced.
(3) Failure by the City to respond to a claim from the Contractor within the time periods described in this subdivision or to otherwise meet the time requirements of this section shall result in the claim being deemed rejected in its entirety. A claim that is denied by reason of the public entity's failure to have responded to a claim, or its failure to otherwise meet the time requirements of this section, shall not constitute an adverse finding with regard to the merits of the claim or the responsibility or qualifications of the Contractor.
(4) Amounts not paid in a timely manner as required by this section shall bear interest at 7 percent per annum.

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(5) If a subcontractor or a lower tier subcontractor lacks legal standing to assert a claim against a public entity because privity of contract does not exist, the Contractor may present to the public entity a claim on behalf of a subcontractor or lower tier subcontractor. A subcontractor may request in writing, either on his or her own behalf or on behalf of a lower tier subcontractor, that the Contractor present a claim for work which was performed by the subcontractor or by a lower tier subcontractor on behalf of the subcontractor. The subcontractor requesting that the claim be presented to the public entity shall furnish reasonable documentation to support the claim. Within 45 days of receipt of this written request, the Contractor shall notify the subcontractor in writing as to whether the Contractor presented the claim to the public entity and, if the original contractor did not present the claim, provide the subcontractor with a statement of the reasons for not having done so.
c. A waiver of the rights granted by this section is void and contrary to public policy, provided, however, that (1) upon receipt of a claim, the parties may mutually agree to waive, in writing, mediation and proceed directly to the commencement of a civil action or binding arbitration, as applicable; and (2) the City may prescribe reasonable change order, claim, and dispute resolution procedures and requirements in addition to the provisions of this section, so long as the contractual provisions do not conflict with or otherwise impair the timeframes and procedures set forth in this section. 11-04. Litigation and Forum Selection. Contractor and City stipulate and agree that any litigation relating to the enforcement or interpretation of this contract, arising out of Contractor's performance or relating in any way to the work shall be brought in Mendocino County and that venue will lie in Mendocino County.

Except as otherwise expressly provided by law, the parties waive any objections they might otherwise have to the propriety of jurisdiction or venue in the state courts in Mendocino County and agree that California law shall govern any such litigation.

The duties and obligations imposed by these General Conditions and the rights and remedies available hereunder to the parties hereto and, in particular but without limitation, the warranties, guaranties and obligations imposed upon the Contractor and all of the rights and remedies available to the City thereunder, shall be in addition to and shall not be construed in any way as a limitation of, any rights and remedies available to any or all of them which are otherwise imposed or available by law or contract, by special warranty or guaranty, or by other provisions of the contract documents and the provisions of this paragraph shall be as effective as if repeated specifically in the contract documents in connection with each particular duty, obligation, right and remedy to which they apply. All warranties and guaranties made in the contract document shall survive final payment and termination or completion of this contract. The City disclaims an express or implied warranty that the plans and specifications identify all site conditions that could affect the time or cost to complete the Work.
11-05. Waiver. The Contractor shall strictly comply with all notices and other contract requirements. Waiver by the City of any failure of the Contractor to comply with any term of the contract, including the notice provisions, shall not be deemed a waiver of a subsequent breach.

RIVERSIDE PARK REGENERATION 22 Spec No.24-05

TECHNICAL SPECIFICATIONS
SECTION 12. GENERAL INFORMATION
12-01. Location and Scope of Work. The work involves construction of seasonal wetlands at 1281 East Gobbi Street in Ukiah, California within Riverside Park. The tasks include but are not limited to clearing and grubbing, maintenance of SWPPP, installation of stormwater BMP’s, monitoring and maintenance of erosion control measures, removal and off haul of existing concrete/asphalt debris, grading and contouring to create wetlands, confirmation of final grades, new gravel paths, planting and irrigation, maintenance of planting and irrigation.

The Contractor should familiarize himself with the local conditions of the project sites. Failure to do so will in no way relieve him of the responsibility for performing any of the work or operations required as a part of this contract. Further information regarding the work or these specifications can be obtained from Mary Horger at (707) 463-6233. 12-02. Arrangement of Technical Specifications. The Technical Specifications are arranged in sections covering the various phases of work as follows:

Section No. Title
12 General Information
13 Construction Details (Special Provisions)
14 Exclusions from General Conditions
15 Amendments to General Conditions
12-03. Arrangement of Plans. General locations and linear quantities of the work are shown in on the Plans. The Plans consist of one hundred and seven (107) sheets numbered 1 through 107 and they are hereby made a part of the Contract Documents.
12-04. Business Licenses. The Contractor and any subcontractors shall each secure and maintain a valid City of Ukiah Business License prior to the start of any portion of the work. 12-05. Permits. The Contractor shall provide, procure, and pay for all permits required to complete this work. The Contractor shall obtain an encroachment permit from the City of Ukiah Public Works Department at no cost prior to the start of the Work. The encroachment permit will not be issued until the Contract Agreement and bonds have been executed, submitted, and accepted by the City and all insurance endorsements have been submitted to and accepted by the City’s Risk Manager.
12-06. Standard Specifications and Standard Plans. The Standard Specifications and Standard Plans of the California State Department of Transportation 2018, are hereby made a part of these special provisions, and are hereinafter referred to as "Standard Specifications" and "Standard Plans." These special provisions specify the qualitative technical requirements of the project.

Whenever in the Standard Specifications and the Standard Plans the following terms are used, they shall be understood to mean and refer to the following:

Department of Transportation - Caltrans
Director of Public Works - The City of Ukiah Director of Public Works/City Engineer.

Engineer - The Engineer, designated by the City Council, acting either directly or through properly authorized agents, such agents acting within the scope of the particular duties entrusted to them.

Laboratory - The designated laboratory authorized by the City of Ukiah and approved by Caltrans to test materials and work involved in the contract.

RIVERSIDE PARK REGENERATION 23 Spec No.24-05
State or Owner - The City of Ukiah
Other terms appearing in the Standard Specifications and the Standard Plans shall have the intent and meaning specified in Section I, Definition of Terms of the Standard Specifications.

In case of discrepancy between the contract documents, the order of precedence from the highest to lowest is as follows:

1. (City) Special Provisions

2. (City) Project Plans

5. Technical Specifications
12-07. Temporary Facilities. All temporary facilities are the responsibility of the Contractor. The removal of said facilities shall be the responsibility of the Contractor. The Contractor shall be responsible for any and all damages to existing facilities which are a result of the work.
12-08. Public Convenience and Safety. Attention is directed to Section 7-1.03, "Public Convenience," 7-1.04, "Public Safety" of the Standard Specifications. The Contractor shall conduct operations so as to cause the least possible obstruction and inconvenience to public traffic. The Contractor shall, at his or her expense, furnish such flag persons and furnish, erect, construct and maintain such fences, barriers, lights, signs, detours, pedestrian walkways, driveway ramps and bridging as may be necessary to give adequate warning to the public that work is in progress and that dangerous conditions exist, to provide access to abutting properties and to permit the flow of pedestrian and vehicular traffic to safely and expeditiously pass the work.
12-09. Maintaining Traffic. Attention is directed to Section 7-1.03, "Public Convenience," 7-1.04, "Public Safety," 12-1.01, “General,” and 12-3," Temporary Traffic Control Devices," of the Standard Specifications.

Streets shall be open to through vehicular traffic during non-working hours. The Contractor shall provide temporary pavement, trench plates and any other methods shall be utilized to allow for a normal driver experience. The Contractor shall provide all applicable signage through the work zone to inform the public of the condition of the roadway through the site. During work hours public traffic shall be permitted to pass through the work with as little inconvenience and delay as possible. Access to abutting property, driveways and building entrances shall be maintained during the performance of the work. The Contractor is advised that commercial and residential businesses immediately abut the Project Area. The Contractor shall provide advance written notification of the work and of temporary closures of driveways to the abutting property owners or managers of the businesses at least 5 business days prior to the start of the Work or the temporary closure of the driveway to the respective business property. The format and content of the Notice by the Contractor shall be approved by the Engineer prior to its issuance to the public. The Contractor shall provide trench plates at driveways and left turn pockets after the trench and roadway excavation has been made at those particular locations. The Contractor shall maintain safe and accessible (ADA compliant) walkways to all business entrances within the Project Area for the duration of the project. Under no circumstances shall access to any business be blocked or closed without the written approval of the City and written consent of the business owner.

12.10. Stream Pollution. The Contractor shall exercise every reasonable precaution to prevent muddying or silting of live streams, and the Contractor's attention is called to the fact that the terms of this contract do not relieve him or her of responsibility for compliance with Sections 5650 and 12015 of the Fish and Game Code or other applicable statutes relating to pollution prevention or abatement.

The Contractor’s attention is also directed to Section 13, “Water Pollution Control,” of the Standard Specifications and to Section 13-3, “Storm Water Pollution Prevention Plan”, of the Standard Specifications concerning the requirement for submittal to the Engineer for approval of a Storm Water Pollution Prevention Plan (SWPPP) for the control of pollution to adjacent drainage courses during the construction of the project. Said SWPPP shall include the erosion control provisions required by Section 13, “Water Pollution Control”, of the Construction Details. 12-11. Warranties. Unless otherwise indicated, the Contractor shall warrant all materials provided and work performed under this contract for a period of one (1) year from the date of final acceptance, except where longer warranties are specified herein. He shall replace promptly and at his own expense any materials and/or workmanship which fail during this warranty period.

RIVERSIDE PARK REGENERATION 24 Spec No.24-05
12-12. Utilities. No water, sewer or electrical services will be provided by the owner. It is the Contractor's sole responsibility to arrange such services as necessary.
12-13. Dust Control. Dust control shall conform to the provisions of Section 18 “Dust Palliatives” of the Standard Specifications.

Dust shall be managed all active construction areas by water at least twice daily and more often during hot or windy periods or use of a dust palliative. The active construction areas adjacent to businesses and residential areas shall be kept damp at all times. Hauling trucks shall be covered and at least a two-foot freeboard shall be maintained.

Unpaved access roads, parking areas for construction equipment and construction employee vehicles, staging areas, and storage areas shall be paved with hot mix asphalt or have a stabilized access in accordance with the details of TC-1, “Stabilized Construction Entrance/Exit,” of the Caltrans Construction Site Best Management Practices Manual or Standard Plan T58. Unpaved construction staging areas shall receive the application of either water twice daily or a dust palliative. All paved roads, parking areas, staging areas, storage areas, and public roads impacted by the work of the project shall be swept daily with street sweepers equipped with water spray to remove soil materials that have been deposited on these surfaces by reason of the work.

The Contractor shall enclose, cover, or water twice daily or apply non-toxic soil stabilizers or install erosion control blankets to or on exposed stockpiles, embankment slopes, and cut slopes.

Traffic speeds on unpaved surfaces shall be limited to a maximum speed of 15 mph 12-14. Noise Control. The Contractor’s attention is directed to the provisions of Section 14-8.02, “Noise Control", of the Standard Specifications and Section 9.08, Saturday, Sunday, Holiday, and Night Work, of these General Conditions concerning the control of noise emissions and authorized work hours and days. Between 7:00 a.m. and 7:00 p.m., noise from Contractor’s operations shall not exceed limits established by applicable laws or regulations and in no event shall exceed 86 dB at a distance of 50 feet from the noise source.

The Contractor shall notify all residents, businesses and property owners within a 500-foot radius of the construction site about the proposed construction schedule. The notification shall be in writing and it shall be developed by the Contractor and submitted to the City for approval a minimum of 5 working days prior to the proposed public notification.

The City shall provide a Noise Disturbance Coordinator who shall be responsible for acting on any local complaints concerning the construction noise being generated by reason of the work of the project. The Contractor shall conspicuously post a telephone number for the Noise Disturbance Coordinator at the construction site and he shall include it in the construction schedule notice to be provided to the residents. The Noise Disturbance Coordinator shall investigate the noise complaint allegations and shall require the Contractor to implement reasonable measures to mitigate the noise level in accordance with the requirements of these General Conditions and of the Standard Specifications.

The Contractor shall locate all stationary noise generating construction equipment such as air compressors and generators as far as practical from the nearby residences and other noise sensitive land uses. The noise source shall be acoustically shielded when practical. The Contractor shall prohibit unnecessary idling of internal combustion engines. 12-15. Watering. The application of water shall be performed in accordance with the provisions of Section 18, “Dust Palliatives,” of the Standard Specifications except as modified by these Special Provisions. The Contractor is advised that water may be obtained from fire hydrants within the Project Area under permit with the City’s Public Utilities Department and upon the payment of a meter deposit. Permit application and inquiry as to the water usage fees are to be made at Public Utilities Department-Water Division Building within the City’s Corporation Yard located at 1320 Airport Road, (707) 463- 6200.
12-16. Preconstruction Conference. A preconstruction conference shall be held before any work will be allowed to commence. This meeting will cover inspection, schedule for work and among other items, the responsibilities and procedures of each of the interested parties to assure that the project will be completed in accordance with the contract documents.
12-17. Progress Schedule. Progress schedules will be required for this contract and shall conform to the provisions in Section 8-1.02D, "Level 3 Critical Path Method Schedule," of the Standard Specifications. Critical Path Method (CPM) schedules shall be prepared using Microsoft Project software, or an equivalent software application approved by the

RIVERSIDE PARK REGENERATION 25 Spec No.24-05
Engineer. After baseline schedule is accepted by the Engineer, Contractor shall update and submit the CPM schedule to Engineer for review every 2 calendar weeks.
12-18. Progress Meetings. The Engineer shall schedule, arrange and conduct progress meetings. These meetings shall be conducted once per week, or as mutually agreed by Contractor and City, and shall be attended by the Contractor’s superintendent and representatives of all subcontractors, utilities, and others, who are active in the execution of the Work.

The purpose of these meetings shall be to review the Contractor’s CPM schedule, resolve conflicts, and in general, coordinate and expedite the execution of the Work. Engineer will make arrangements for meetings, prepare agenda with copies for participants, preside at meetings and record the meeting minutes. 12-19. Safety Requirements. The Contractor shall comply with all pertinent provisions of the Department of Labor "Safety and Health Regulations for Construction (29 FCS Part 1518, 36 CFR 7340)", with additions or modifications thereto, in effect during construction of this project.
12-20. Public Notification. The Contractor shall be responsible for all public notification regarding construction work, including detours, lane and street closures, hours of operations, and notification of effected commercial businesses and residences within 1000 feet of the construction. For any business impacted by construction, the Contractor shall provide adequate sized on-site signage indicating that businesses are open during construction. The Contractor shall prepare public noticing via the newspaper, radio announcements, notification of the emergency vehicle agencies, public transit, Ukiah Unified School District, Ukiah Municipal Airport. At a minimum, Main Street, State Street, School Street, Perkins Street, and Gobbi Street will be affected by potential detours and street closures, with recommended alternate routes of travel. Access will be restricted to businesses and residents only during construction closures. Location of street closures signage shall be positioned to give motorists the ability to use alternate routes prior to coming to a dead end road closed for construction. All proposed detours, closures and traffic control methods shall be submitted to the Engineer for approval prior noticing to the public. All public noticing shall be performed a minimum of one (1) calendar week prior to instituting traffic control, and lane or street closures. The tentative construction schedule shall be included in the public noticing, and the use of temporary traffic signalization of intersections shall be noted. The Contractor shall submit all public notice language to the City Engineer for approval prior to publication of notices. All road closures, detour routes, and traffic control including temporary lane closure plans shall be submitted by the Contractor to the City Engineer for approval prior to public noticing and use.

RIVERSIDE PARK REGENERATION 26 Spec No.24-05
SECTION 13 - CONSTRUCTION DETAILS

STANDARD PLAN LIST
The following Standard Plans are incorporated by reference:

NOT USED

ORGANIZATION
Special provisions are under headings that correspond with the main-section headings of the Standard Specifications.

A main-section heading is a heading shown in the table of contents of the Standard Specifications.

Each special provision begins with a revision clause that describes or introduces a revision to the Standard Specifications as revised by any revised standard specification.

Any paragraph added or deleted by a revision clause does not change the paragraph numbering of the Standard Specifications for any other reference to a paragraph of the Standard Specifications. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

DIVISION I GENERAL PROVISIONS
1 GENERAL
No Changes
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2 BIDDING
Add to section 2-1.06B:

The City makes the following supplemental project information available:

Supplemental Project Information
Means Description
Included in the Information Handout
Available as specified in the Standard
Specifications
Included with the project plans
Available for inspection at the Transportation
Laboratory
Available for inspection at the District Office
Telephone no.: _____
Available for inspection at:

City of Ukiah Public Works Dept.

Telephone no.: (707) 463-6755

RIVERSIDE PARK REGENERATION 27 Spec No.24-05
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3 CONTRACT AWARD AND EXECUTION
Add to section 3-1.06:

The Contractor and any subcontractors shall each secure and maintain a valid City of Ukiah Business License prior to the start of any portion of the work.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
4 SCOPE OF WORK
Replace section 4-1.03 with:

The work involves construction of seasonal wetlands at 1281 East Gobbi Street in Ukiah, California within Riverside Park. The tasks include but are not limited to clearing and grubbing, maintenance of SWPPP, installation of stormwater BMP’s, monitoring and maintenance of erosion control measures, removal and off haul of existing concrete/asphalt debris, grading and contouring to create wetlands, confirmation of final grades, new gravel paths, planting and irrigation, maintenance of planting and irrigation.
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5 CONTROL OF WORK
Add to section 5-1.20A:

During the progress of the work under this Contract, work under the following contracts may be in progress at or near the job site of this Contract:

Coincident or Adjacent Contracts
City Contract no. City–Route–Post Mile Location Type of work Replace section 5-1.26 with:

Construction surveying including horizontal and vertical control and construction staking shall be the responsibility of the Contractor. Vertical and horizontal control is to be established from the existing Control Points established by the City and shown on the Plans. Vertical Control Points are shown on the Plans.

Prior to the start of excavation work, the Contractor will be required to pothole existing utilities and other underground piping for the purpose of verifying location and depth a minimum of five (5) working days in advance of excavation. The limited utility information indicated on the Plans reflects a baseline sampling of potential utility conflicts identified during the design of the project. The Contractor is responsible for potholing at these locations at a minimum. Additional utility location efforts may be required by the Contractor to positively locate all utilities impacted by the project. As a part of the Work, the Contractor will be responsible for performing all survey and construction layout work and performing testing and quality control work.

Add to section 5-1.36A:

All temporary facilities are the responsibility of the Contractor and the removal of said facilities shall be the responsibility of the Contractor. The Contractor shall be responsible for any and all damages to existing facilities which are a result of the installation and removal of the Contractor’s temporary facilities.

The City will not arrange temporary water, sewer or electrical services for construction. It is the Contractor's sole responsibility to arrange such services as necessary with the applicable utility provider(s). ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
6 CONTROL OF MATERIALS
Add to section 6-2.01A:

The Contractor shall be responsible for controlling the quality of the materials incorporated into the work and of the work performed. The City shall perform material sampling and testing to verify the work meets the specified quality

RIVERSIDE PARK REGENERATION 28 Spec No.24-05
requirements (Quality Assurance). The City will perform soil and aggregate sampling and testing using an independent testing laboratory firm licensed to perform such tests. Other required sampling and testing may be performed by the City’s independent laboratory certified to perform the type of sampling and testing assigned to or requested of them.

Should any City performed test result indicate a non-compliance with the requirements of the Contract Documents, the Contractor shall remove and reconstruct or rework the non-complying portion of work at no additional cost to the City.

All reconstructed and reworked items of work shall be tested at the Contractor’s expense in the same manner as required for the initial work at no additional cost to the City. Prior to any removal, reconstruction or rework of any work item already incorporated into the project, the Contractor shall first obtain the approval of the Engineer as to the Contractor’s proposed methods for removal, reconstruction or rework.

Examples of Quality Control material tests required by the Contractor on this project include, but are not limited to, compaction and gradation of aggregate base, Portland cement concrete and hot mix asphalt, compaction on roadway subgrade, and gradation & durability on aggregate materials.

The City reserves the right to test, at its own cost, any item of work that has been tested by the Contractor and any independent testing performedby the City shall not relieve the Contractor of his responsibility for sampling, testing, reporting and overall quality controlrequired by the ContractDocuments. Should any independent tests performed by the City indicate non-compliance with the Contract Documents, upon notice of the Engineer, the Contractor shall retest that portion of the work not in compliance to the independent test. The City will closely monitor the Contractor’s retest. Should the Contractor’s retest indicate compliance with the Contract Documents, the direct costs related to the retest shall be paid as extra work pursuant to the provisions provided in Section 9 of the Standard Specifications. Should the Contractor’s retest indicate non-compliance, the Contractor shall remove, reconstruct, or rework the non-complyingportion of work and the cost of the replacement work and retest shall be borne by the Contractor.

The Contractor shall be responsible for all material and functional testing required for all electrical, lighting and traffic signal equipment as required by the Standard Specifications.

Full compensation for performing all sampling, testing, reporting, retesting, if required, and overall quality control shall be considered as included in the prices paid for the various contract items of work and no additional compensation will be allowed therefor.
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7 LEGAL RELATIONS AND RESPONSIBILITY TO THE PUBLIC
Add to section 7-1.03:

The Contractor shall conduct operations so as to cause the least possible obstruction and inconvenience to public traffic and businesses. The Contractor shall, at his or her expense, furnish such flag persons and furnish, erect, construct and maintain such fences, barriers, lights, signs, detours, pedestrian walkways, driveway ramps and bridging as may be necessary to give adequate warning to the public that work is in progress and that dangerous conditions exist, to provide access to abutting properties and to permit the flow of pedestrian and vehicular traffic to safely and expeditiously pass through the work.

Add to section 7-1.04:

The Contractor shall comply with all pertinent provisions of the Department of Labor "Safety and Health Regulations for Construction (29 FCS Part 1518, 36 CFR 7340)", with additions or modifications thereto, in effect during construction of this project.
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8 PROSECUTION AND PROGRESS
Add to section 8-1.02D(1):

Level 3 Critical Path Method (CPM) Progress schedule will be required for this contract and shall conform to the provisions in Section 8-1.02D, "Level 3 Critical Path Method Schedule," of the Standard Specifications. After baseline schedule is accepted by the Engineer, Contractor shall update and submit CPM schedule to Engineer for review every 2 calendar weeks. Progress schedule will be paid for as described in Section 8-1.02D(10).

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Replace section 8-1.02E with:

The Engineer shall schedule, arrange and conduct progress meetings. These meetings shall be conducted once per week, or as mutually agreed by Contractor and City, and shall be attended by the Contractor’s superintendent and representatives of all subcontractors, utilities, and others, who are active in the execution of the Work. The purpose of these meetings shall be to review the Contractor’s CPM schedule, resolve conflicts, and in general, coordinate and expedite the execution of the Work. Engineer will make arrangements for meetings, prepare agenda with copies for participants, preside at meetings and record the meeting minutes.

Replace section 8-1.03 with:

A preconstruction conference will be held before any work will be allowed to commence. This meeting will cover inspection, work schedule, and among other items, the responsibilities and procedures of each of the interested parties to assure that the project will be completed in accordance with the contract documents. Engineer will prepare and distribute an agenda for the preconstruction conference.

Add to section 8-1.04B:

The Contractor shall obtain and pay for all permits required to complete this work except the required City of Ukiah encroachment permit for work within the City right-of-way. The Contractor shall obtain an encroachment permit from the City of Ukiah Public Works Department at no cost prior to the start of the Work. The encroachment permit will not be issued until the Contract Agreement and bonds have been executed, submitted, and accepted by the City and all insurance endorsements have been submitted to and accepted by the City’s Risk Manager.

Replace "Reserved" in section 8-1.04C with:

Physical work on the site shall not commence until a “No Fee” encroachment permit is issued by the City of Ukiah to the Contractor.

Do not start job site activities until the City authorizes or accepts your submittal for:

1. SWPPP

2. Traffic Control Plan

3. Dust Treatment Plan (Water base per section 18 Dust Palliative of the Standard Specifications.

Submit these items, submittals for other long lead-time items, within five (5) days after Notice to Proceed has been issued.

Do not start other job site activities until all the submittals from the above list are authorized or accepted and the following information is received by the Engineer:

1. Notice of Materials To Be Used form.

2. Written statement from the vendor that the order for the sign panels has been received and accepted by the vendor. The statement must show the dates that the materials will be shipped.

3. Written statement from the vendor that the order for electrical material has been received and accepted by the vendor. The statement must show the dates that the materials will be shipped. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
9 PAYMENT
Add section 9-1.18:
9-1.18A Payment Item Descriptions

1. Payment for Mobilization, Demobilization and Final Cleanup will be made in two (2) equal payments at the lump sum allowance in the Bid Schedule, which price shall constitute full compensation for all such work. The scope of work for mobilization shall include, but not limited to, obtaining all bonds, insurance and permits, moving onto the site of all plant and equipment, submittal and approval of a schedule of values for lump sum items, and obtaining approval for all shop drawings and materials for signal equipment. Payment for demobilization and final cleanup shall occur when all required items per