2022-08-18_M4,_Ph_2_and_M1,_Ph_4_and_5_Contract_Specifications.pdf

COUNTY OF SACRAMENTO

Department of Waste Management and Recycling

CONTRACT SPECIFICATIONS

FOR

MODULE 4, PHASE 2 BASE LINER SYSTEM,

AND MODULE 1, PHASE 4 AND 5 CLOSURE

FINAL COVER, KIEFER LANDFILL

Project Manager: Peter Bowers, P.E.

Sacramento County Department of Waste Management and Recycling (916) 875-

1461 bowersp@saccounty.gov

Bidding Documents, Contract Requirements, and Technical Specifications

CONTRACT NO. 4561

August 2022

NOTE: The County of Sacramento Standard Construction Specifications, revised January 2016 are hereby made a part of these Specifications. The Standard Construction Specifications may be downloaded at https://saccountyspecs.saccounty.gov/Pages/default.aspx

KEITH GOODRICH, INTERIM DIRECTOR

DEPARTMENT OF WASTE MANAGEMENT AND RECYCLING

mailto:%20bowersp@saccounty.gov

Project Specifications Module 4, Phase 2 Base Liner System, and Module 1, Phase 4 and 5 Final Cover, Kiefer Landfill

Special Provisions i

CONTRACT 4561

SPECIFICATIONS FOR

MODULE 4, PHASE 2 BASE LINER SYSTEM, AND MODULE 1,

PHASE 4 AND 5 FINAL COVER, KIEFER

LANDFILL

TABLE OF CONTENTS

SECTION DESCRIPTION

01000 Special Provisions 01010 Summary of Work 01025 Measurement and Payment 01035 Modification Procedures 01050 Field Engineering 01052 Layout of Work and Surveys 01090 References 01190 Health and Safety 01200 Project Meetings 01300 Submittals 01310 Construction Schedule 01400 Quality Control 01500 Construction Facilities 01560 Temporary Controls 01600 Materials and Equipment 01630 Product Options and Substitutions 01700 Contract Closeout 02070 Selective Demolition 02110 Clearing and Stripping 02112 Waste Excavation and Disposal 02169 Protective Plywood Cover 02200 Site Earthwork 02230 Surface Water Drainage Structures 02270 Erosion and Sediment Control 02271 Seeding 02272 Erosion Control Mat 02285 Settlement Monuments 02589 Geoelectric Leak Location Survey Support 02710 High Density Polyethylene (HDPE) Pipe 02711 Corrugated High Density Polyethylene (HDPE) Pipe 02771 Geotextile 02772 Geosynthetic Ballast System 02774 Drainage Geocomposite 02778 HDPE Geomembrane 02779 Geosynthetic Clay Liner 03300 Cast In Place Concrete

PAGES

01000 – 1 to 4 01010 - 1 to 8 01025 – 1 to 23 01035 – 1 to 2 01050 – 1 to 2 01052 - 1 to 5 01090 - 1 to 5 01190 - 1 to 3 01200 – 1 to 4 01300 - 1 to 4 01310 – 1 to 2 01400 - 1 to 3 01500 - 1 to 6 01560 - 1 to 10 01600 - 1 to 2 01630 - 1 to 2 01700 – 1 to 4 02070 – 1 to 3 02110 - 1 to 2 02112 – 1 to 2 02169 – 1 to 1 02200 - 1 to 27 02230 - 1 to 4 02270 – 1 to 4 02271 – 1 to 12 02272 – 1 to 4 02285 – 1 to 2 02589 – 1 to 5 02710 – 1 to 6 02711 - 1 to 3 02771 - 1 to 8 02772 – 1 to 5 02774 – 1 to 10 02778 – 1 to 30 02779 – 1 to 11 03300 - 1 to 9

Module 4, Phase 2 Base Liner System, and Module 1, Phase 4 and 5 Final Cover, Kiefer Landfill SPECIAL PROVISIONS

Geo-Logic Associates Section 01000 August 2022 Page 1 of 4 SPECIAL PROVISIONS

SECTION 01000

SPECIAL PROVISIONS

PART 1 - GENERAL

1.01 SCOPE OF WORK

A. The work under this contract includes furnishing labor, equipment, and materials to construct the Module 4, Phase 2 base liner system and Module 1, Phase 4 and 5 final cover, and related structures, including excavating and stockpiling of soils, geosynthetics installation, and construction of the leachate collection and removal system (LCRS). The liner area is approximately 25 acres, and the final cover area is approximately 49 acres.

1.02 PROJECT LOCATION

Kiefer Landfill 12701 Kiefer Boulevard Sloughhouse, CA 95683

1.03 DRAWINGS

A. The contract drawings are entitled: Module 4, Phase 2 Base Liner System, and Module 1, Phase 4 and 5 Final Cover, Kiefer Landfill, Contract #4561

1.04 GENERAL LIABILITY INSURANCE

A. Limits of liability must not be less than $3,000,000 per occurrence and $3,000,000 general aggregate.

1.05 AUTOMOBILE LIABILITY INSURANCE

A. Limits of liability must not be less than $2,000,000 combined single limit for private passenger vehicles, light or medium rated trucks, and heavy, extra-heavy, or tractor trailers.

1.06 BUILDER'S RISK INSURANCE

A. Builder's Risk Insurance will not be required for this project.

1.07 CONTRACTOR’S POLLUTION LIABILITY INSURANCE

A. Contractor’s pollution liability insurance is required and must not be less than $3,000,000.

1.08 TIME OF COMPLETION

A. The time for completion of this contract shall be 285 working days commencing as specified in

Section 7-1, “Beginning of Work,” of the Standard Construction Specifications.

1.09 EARLY COMPLETION INCENTIVE

A. Included in the estimated construction cost is a bonus of $500,000 to the Contractor if all work is completed and field accepted, including completion of all punch list items, by March 15, 2024. No extensions to this date will be considered under any circumstances.

1.10 LIQUIDATED DAMAGES

A. Liquidated damages shall be $10,000 for each calendar day delay. Refer to Section 8.10 of the County Standard Construction Specifications.

August 2022 Page 2 of 4 SPECIAL PROVISIONS

1.11 PRE-BID CONFERENCE

A. A mandatory pre-bid conference will be held as noted in the NOTICE TO CONTRACTORS.

1.12 STANDARD CONSTRUCTION SPECIFICATIONS

A. The County of Sacramento Standard Construction Specifications, adopted by the Board of

Supervisors and effective January 2016, are hereby made part of these specifications. A copy of the Standard Construction Specifications may be obtained at the cashier's window in Room 101 of the County Administration Building, 827-7th Street, Sacramento.

1.13 EXAMINATION OF PLANS, SPECIFICATIONS, AND SITE OF WORK

A. Direct pre-bid questions to Sacramento County Department of Waste Management and

Recycling’s Project Manager, Peter Bowers, P.E. at bowersp@saccounty.gov, and Senior Civil Engineer, Rachel Davis, P.E. at davisrac@saccounty.gov.

1.14 ACCURACY OF DRAWINGS AND SPECIFICATIONS

A. The existing conditions depicted on the drawings and specifications are developed from record information. Exact locations, distances, dimensions, elevations, etc., shall be governed by actual field conditions and verified by the contractor. The engineer shall be notified of any discrepancies found prior to the start of work in that area.

1.15 STORAGE OF SUPPLIES, MATERIALS, EQUIPMENT, ETC.

A. The Contractor shall obtain the prior approval of the Engineer for any area or space required for Contractor's storage during construction operations. Materials, equipment, etc., shall not be piled or stored in any location that would interfere with the conduct of normal functions of the buildings and/or facilities, and shall not constitute a hazard to persons or property. The Contractor shall install any required safety precautions such as signs, danger signals, lanterns, barricades, etc., during construction operations.

1.16 CONSTRUCTION SURVEYS

A. The Contractor shall be responsible for and shall perform all surveys and measurements necessary for layout and control of work. Surveys shall be performed in accordance with the requirements of Section 5-9.03 of the Standard Construction Specifications.

1.17 TESTING

A. Testing of soils, asphalt, concrete and aggregate shall be performed by the County in accordance with Section 5-16 Materials Sampling and Testing of the County Standard Construction Specifications. All other tests shall be performed and paid for by the Contractor as required in these contract documents.

1.18 ADDITIONAL SETS OF CONTRACT DOCUMENTS

A. Following execution of the Contract, the County will provide electronic files in .pdf format of contract specifications, drawings, and addenda to the Contractor. Hard copy sets of construction document sets will not be furnished.

1.19 SIGNS

A. No advertising signs of any kind will be permitted except by written permission of the

Engineer.

1.20 CONTRACTOR'S FIELD OFFICE

A. A space for a Contractor field office shall be made available.

mailto:bowersp@saccounty.gov mailto:davisrac@saccounty.gov.

August 2022 Page 3 of 4 SPECIAL PROVISIONS

1.21 ENGINEER'S FIELD OFFICE

A. An engineer’s field office is not required.

1.22 TEMPORARY SERVICES

A. Water

1. Contractor may connect temporary line to existing water service lines at the site. The Contractor is to verify conditions at site.

B. Electrical Power

1. Contractor shall coordinate with Site Engineer in order to hook-up to existing service.

2. Contractor shall arrange for and install power service from SMUD service lines, as necessary.

C. Telephone

1. Contractor may arrange for and install telephone service for his own use. The Contractor shall not use County telephones.

D. Field Toilets

1. The Contractor shall furnish, install, and remove at completion of the job, all sanitary; i.e., portable toilet facilities required for the completion of the job. The type and location of the facilities shall be subject to acceptance by the Engineer.

2. All sanitary facilities shall be made available for use by all workers, subcontractors, consultants, and County personnel associated with the project.

3. The Contractor shall maintain sanitary facilities in a proper, safe, operating, and sanitary condition for the duration of the work. Facilities shall be provided in sufficient quantities to comply with CAL-OSHA regulations.

4. Existing facilities at site shall not be used by contractor's employees.

E. Fences, Barricades, Warning Signs, And Lights

1. To confirm to CAL-OSHA regulations, other State of California and local codes, rules, regulations, and ordinances for protection of workers, public and private property, provide, install and maintain barricades, warning devices and other protection required therefore.

2. Contractor to provide temporary fencing, etc., as required to protect material storage and equipment from theft, and vandalism.

F. Contractor's Access, Work and Storage Areas

1. Contractor to be limited to the area shown on the drawings.

2. The contractor shall coordinate with the Project Manager as to where the set-up staging area will be located.

1.23 EROSION, SEDIMENT, AND WATER POLLUTION CONTROL

A. The Contractor shall submit a Storm Water Pollution Prevention Plan (SWPPP) to the Site

Engineer in compliance with the National Pollutant Discharge Elimination System provisions, Construction General Permit, and site specific SWPPP, and conduct all work in accordance with those requirements. The Contractor shall notify the Site Engineer of any conditions that could lead to noncompliance with the permit requirements. The Contractor shall not be entitled to any time extensions or compensation for any costs due to any action required as a result of Contractor’s failure to comply with those provisions of

August 2022 Page 4 of 4 SPECIAL PROVISIONS the SWPPP. The Contractor is responsible to ensure that subcontractor(s) comply with this provision.

1.24 SPECIAL SECURITY REQUIREMENTS

A. The Contractor's workers and equipment shall be limited to the work areas as designated by this contract.

1.25 SCHEDULE OF WORK AND LIMITATIONS

A. Operations

1. During the progress of work, landfill facilities operation shall be maintained without interruption, except by specific arrangement with the County and then only at such times as approved in writing by the Engineer. The Contractor will be required to maintain access to the operating portion of the landfill at all normal times of business.

The Contractor will be required to provide traffic control and provide alternate routes of access if construction activities interfere with the flow of traffic along the Landfill's main access road.

B. Coordination of Contract Work with Owner's Operation

1. The Contractor shall coordinate the work of this contract through the Project Manager assigned by the County or Engineer. Progress meetings will be conducted weekly in accordance with the County of Sacramento, Standard Construction Specifications, Section 7.3 Preconstruction Conference and Progress Meeting. The contractor shall submit a construction schedule and progress schedule in accordance with the County of Sacramento Standard Construction Specifications, Section 7.5.01 Progress Schedule.

C. Site Conditions

1. The Contractor shall be responsible for having determined the site conditions to his or her satisfaction, prior to the submission of a bid, the nature and location of the work, the conformation of the ground, the character and quality of the landfill, the type and quantity of materials to be encountered, the character of equipment and facilities needed preliminary to and during the execution of the work, the general and local conditions, and all other matters which can in any way affect the work under this Contract. The prices established for the work to be done will reflect all costs pertaining to the work. Any claims for extras based on landfill conditions or groundwater table conditions will not be allowed.

1.26 ALLOWABLE WORK DAYS AND HOURS

A. Work may be performed between the hours of 5 a.m. through 8 p.m., 7 days per week, excluding Legal Holidays.

END OF SECTION 1000

and Module 1, Phase 4 and 5 Final Cover, Contract No. 4561

Prepared for County of Sacramento Department of Waste Management and Recycling 12701 Kiefer Boulevard Sloughhouse, California 95683

Prepared by

143E Spring Hill Drive Grass Valley, California 95945

(530) 272-2448 www.geo-logic.com Project #AU21.1095

August 2022

Division 1

Kiefer Landfill DIVISION 1 - GENERAL REQUIREMENTS

Geo-Logic Associates Section 01010 August 2022 Page 1 of 8 SUMMARY OF WORK

SECTION 01010

SUMMARY OF WORK

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Contract description

B. Construction water

C. Contractor’s use of site

D. Description of work

E. Contractor’s work scope

1.2 CONTRACT DESCRIPTION

A. Contract Type: Standard Form of Agreement between County and Contractor on the Basis of a Stipulated Price.

1.3 CONSTRUCTION WATER

A. Water for construction and dust control is available from an on-site source. The Contractor shall determine his construction water requirements prior to bidding and shall be responsible for supplying an adequate amount of water. The County/Engineer shall not be responsible for providing additional water nor does it guarantee the quality or quantity of water from the on-site source. Any additional water shall be provided by the Contractor at his expense.

B. The Contractor shall be responsible for transporting and/or conveying, all required construction water from on-site.

C. The Contractor shall maintain and re-establish pre-construction conditions at completion of project.

1.4 CONTRACTOR’S USE OF SITE

A. The Contractor cannot interfere with ongoing landfill operations, including the allowance of sufficient water supply for dust control and operational measures.

B. The Contractor shall limit all activities to the project area, as shown on the Construction Drawings, including excavation area, stockpiles, staging area, and haul roads as identified by the County/Engineer.

August 2022 Page 2 of 8 SUMMARY OF WORK

1.6 DESCRIPTION OF WORK

A. The work under this contract generally includes furnishing labor, equipment, and materials to construct the Module 1, Phase 4 and 5 Partial Final Closure and Module 4, Phase 2 base liner system. The Module 1, Phase 4 and 5 Partial Final Closure areas are approximately 24 and 22, acres respectively.

B. The project includes including excavating and stockpiling of soils, waste excavation, ripping and recompacting of the existing intermediate cover, geosynthetics installation, construction of the leachate collection and removal system (LCRS) gravel and piping, stormwater components, and landfill gas system management.

C. Module 1, Phase 4 and 5 Closure consists of a 6 foot thick Evapotranspirative (ET) Cover, which will include previously placed immediate cover.

D. Module 4, Phase 2 base liner is approximately 26 acres. The Module 4, Phase 2 base liner system will consist of the following elements from top to bottom:

• 2-ft thick soil operations layer

• 8 oz/sy nonwoven geotextile filter

• 1-ft thick LCRS gravel drainage layer

• 12 oz/sy nonwoven geotextile cushion

• 60-mil thick high-density polyethylene (HDPE) double-sided textured (DST) primary geomembrane

• Primary Geosynthetic Clay Liner (GCL)

• Secondary geocomposite (nonwoven geotextile on top and bottom)

• 60-mil thick HDPE DST secondary geomembrane

• Secondary GCL

• Prepared subgrade

The side slope containment system will consist of the following elements from top to bottom:

• Minimum 2-ft thick soil operations layer (k ≥ 1x10-3 cm/sec)

August 2022 Page 3 of 8 SUMMARY OF WORK

• 60-mil thick high-density polyethylene (HDPE) single-sided textured (SST) primary geomembrane, smooth side up

• Primary GCL

• Prepared subgrade

E. All work must be carried out and maintained per the Construction Drawings and Specifications subject to the approval of the Design Engineer and Construction Quality Assurance Consultant.

1.7 CONTRACTOR’S WORK SCOPE

A. Contractor shall furnish all labor, materials, tools, equipment, supervision, transportation, and installation services required for the following tasks, at a minimum, as summarized below, and outlined in the Construction Drawings and Specifications:

1. All necessary construction staking to lay-out the work and other surveying to compute quantities and prepare as-built drawings.

2. The Contractor shall prepare a site specific Health and Safety Plan and Emergency Response and Contingency Plan (subject to approval by the County), furnish health and safety equipment and decontamination materials as specified in the Health and Safety Plan, and implement provisions of the Emergency Response and Contingency Plan as necessary. Safety requirements are provided in Section 01190.

3. The Contractor shall prepare Stormwater Pollution Prevention Plan (SWPPP) (subject to approval by the County), prior to the start of work.

The SWPPP will be implemented under the Contractor’s Construction General Permit. SWPPP requirements are provided in Section 01560.

4. In Module 1, Phase 4 and 5 Partial Final Closure:

a. Excavation of waste to the lines and grades shown on the Construction Drawings, and disposal of waste at the working face.

b. Ripping and recompacting (to a lesser compactive state) of the existing intermediate cover soil.

c. Excavation, hauling and placement of ET cover to the lines and grades shown on the Construction Drawings.

August 2022 Page 4 of 8 SUMMARY OF WORK

d. Construction of stormwater control structures including drainage channels, swales, culverts, downdrains, and rock slope protection.

e. Extension of landfill gas extraction wellheads along with operation and maintenance of the landfill gas extraction system during construction in Module 1, Phase 4 and 5. Removal, salvage, and reuse of the existing landfill gas (LFG) system as necessary to construct final cover. Contractor shall assume 50% for bidding purposes of pipe will be suitable for reuse. Installation of the salvaged and new HDPE pipe to accommodate the new top deck grading plan as shown on the Construction Drawings. The Contractor shall prepare and submit a LFG Work Plan to the County/Engineer for approval. This plan shall describe, in detail, the Contractor’s plans and methods for maintaining system functionality during closure construction. Individual landfill gas collection system components must remain operational and connected to the existing landfill gas collection system to the extent possible. No more than 10 wells shall be offline at any time and these wells can only be disconnected for a period of thirty

(30) consecutive days at a time unless approved by the County/Engineer. In addition, the Contractor shall coordinate with the County/Engineer for shutoff of the gas system using valves for gas system modification.

f. Placement of aggregate base on access roads as shown on the Construction Drawings.

g. Permanent and temporary erosion control, including wattles, silt fencing, and hydroseeding, as shown on the Construction Drawings.

h. Install settlement monuments as shown on the Construction Drawings.

5. In Module 4, Phase 2 Base Liner System:

a. Excavation to the lines and grades shown on the Construction Drawings and stockpiling soils within the overall project area.

Stockpile locations shown on the Construction Drawings.

b. Placement and compaction of engineered fill material to the lines and grades shown on the Construction Drawings.

c. Preparation of the geosynthetics anchor trenches including locating, excavating, backfilling, and compaction.

August 2022 Page 5 of 8 SUMMARY OF WORK

d. Exposure and cleaning of the existing geosynthetics terminations for liner tie-in.

e. Preparation of the geosynthetic subgrade.

f. Installation of a trench drain to drain existing seepages.

g. Supply and installation of Module 4, Phase 2 geosynthetic liner system components.

h. Supply and installation of leachate collection and removal system (LCRS) components.

i. Excavation, screening, and placement of soil operation layer.

j. Supply and installation of geosynthetics ballast system.

k. Providing support for geoelectric leak location surveys.

l. Construction of stormwater control facilities.

m. Erosion control including hydroseeding.

6. Preparation of all required Record Drawings and surveys necessary to document as-built quantities/conditions.

7. Provide warranties, performance and payment bonds, and insurance as specified in the Contract Documents.

8. Generate and submit Project Schedules and Schedules of Values for County/Engineer’s review.

9. Satisfy the substantive requirements of permits required from appropriate federal, state, and local authorities such as storm water discharge, erosion, and sedimentation (per the Stormwater Pollution Prevention Plan) and heavy equipment emissions (per the Sacramento Metro Air Quality Management District).

10. Mobilization and demobilization of equipment and systems at the site.

11. Site cleanup and restoration.

1.8 EXISTING SITE CONDITIONS

A. The Contractor is advised that there are existing survey monuments, underground utilities, landfill gas collection system components, landfill liner and leachate

August 2022 Page 6 of 8 SUMMARY OF WORK collection system components, paved roads, fencing, lysimeters, and landfill gas and groundwater monitoring wells on the Project Site. The Contractor shall be responsible for the repair or replacement of any existing facilities and equipment damaged by the Contractor's personnel, equipment, subcontractors, or material suppliers.

B. The Contractor is advised that the construction of this project entails working on buried wastes and refuse. As buried organic materials decompose anaerobically, they generate landfill gas (LFG). This LFG (or biogas) normally consists of about 45% carbon dioxide (CO2) 55% methane (CH4), and minor quantities of other gases dependent on the composition of the buried materials. Occasionally hydrogen sulfide (H2S) or other toxic gases have been encountered at some landfills, even though the site was not classified as a hazardous waste disposal site.

C. The landfill is permitted by the state and operated as a Class III landfill that allows for the disposal of "nonhazardous solid waste" as defined in Title 27 of the California Code of Regulations. Notwithstanding the above, the County/Engineer cannot guarantee that toxic or hazardous materials or vapors will not be encountered by the Contractor during the performance of this project.

1.9 CONSTRUCTION DRAWINGS

A. Where "as shown," "as detailed," "as noted," or words of like meaning are used in the Contract Documents, it shall be understood that reference is being made to the Construction Drawings unless otherwise specified.

1.10 MANUFACTURER'S SPECIFICATIONS AND INSTRUCTIONS

A. Unless otherwise indicated or specified, all manufactured materials, products, processes, equipment, or the like shall be installed or applied consistent with the Manufacturer's instructions, directions, or specifications. Said installation or application shall be in accordance with printed instructions furnished by the Manufacturer for the material or equipment concerned for use under conditions similar to those at the Project Site. Two copies of such instructions shall be furnished to the County/Engineer and acceptance thereof obtained before work is begun.

B. Any deviation from the Manufacturer's printed recommendations shall be explained and acknowledged as correct for the circumstances, in writing, by the particular Manufacturer. The Contractor will be held responsible for all installations not conforming to the Manufacturer's recommendations. If any item of material or equipment is found to be installed inconsistent with the Manufacturer's recommendations, the Contractor shall make all changes necessary to achieve such compliance at no additional cost to the County/Engineer.

August 2022 Page 7 of 8 SUMMARY OF WORK

C. Contractor shall secure all field measurements required for proper and accurate fabrication and installation of the work included in this Contract. Exact measurements are the Contractor's responsibility. The Contractor shall also furnish or obtain all templates, patterns, and setting instructions required for the installation of all work. All dimensions shall be verified by the Contractor in the field.

1.11 WORK QUALITY

A. Shop and field work shall be performed by mechanics and workers skilled and experienced in the fabrication and installation of the work feature involved. All work under this Contract shall be performed consistent with the best practices of the various trades involved and consistent with the Construction Drawings, reviewed shop drawings, and these Specifications.

B. All work shall be erected and installed plumb, level, square and true, or true to indicated angle, and in proper alignment and relationship to the work of other trades. All finished work shall be free from defects and damage.

C. The County/Engineer reserves the right to reject any and all materials and work quality that is not considered to be up to the general standards of the various trades involved. Such inferior material or work quality shall be repaired or replaced, as directed, at no additional cost to the County/Engineer.

1.12 ACCESS TO WORK

A. The authorized representatives of the following agencies will also have the right of access to inspect the work covered by these Contract Documents during the performance of this Contract:

1. California Regional Water Quality Control Board, Central Valley Region

(CRWQCB).

2. Sacramento Metropolitan Air Quality Management District (SMAQM).

3. California Department of Resources Recycling and Recovery (CalRecycle).

4. Sacramento County Environmental Management Department (LEA).

5. Other local, state, and federal agencies.

B. These inspections will be performed in the presence of the County/Engineer.

Reasonable facilities for the proper handling and inspection of the materials and the work shall be furnished by the Contractor.

August 2022 Page 8 of 8 SUMMARY OF WORK

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

END OF SECTION

Geo-Logic Associates Section 01025 August 2022 Page 1 of 23 MEASUREMENT AND PAYMENT

SECTION 01025

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Measurement and payment methods for contract bid items.

1.2 MEASUREMENT OF QUANTITIES

A. Based on actual units installed or neat line dimensions of work completed.

1.3 CALCULATION OF QUANTITIES

A. Progress Payment Quantities:

1. Contractor will compute all quantities of Work performed, or of materials and equipment delivered to the site for progress payment purposes.

2. County/Engineer may at any time verify quantities calculated by Contractor.

B. Final Payment Quantities:

1. Contractor will compute all quantities of Work performed, or of materials and equipment delivered and installed for final payment purposes.

2. County/Engineer may perform an independent computation of all quantities of work performed, and of materials and equipment installed.

1.4 PAYMENT

A. In accordance with lump sum, unit prices, or force account rates shown on the Contractor’s final negotiated Bid Schedule.

B. Includes all costs for overhead and profit and for supplying materials, labor, equipment, tools and incidentals, necessary to complete the Work in accordance with the Specifications, Drawings, and Contract Documents.

August 2022 Page 2 of 23 MEASUREMENT AND PAYMENT

1.5 VALUES OF UNIT PRICES

A. The number of units and quantities contained in the Bid Schedule are approximate only, and final payment will be made for the actual number of units and quantities incorporated in the Work or made necessary to complete the project.

B. In the event that work and materials or equipment are required to be furnished to a greater or lesser extent than is indicated by the Contract Documents, such work and materials or equipment shall be furnished in greater or lesser quantities.

1.6 CHANGES AND EXTRA WORK

A. Changes and extra work will be measured and paid for in accordance with the requirements of the Contract Documents.

1.7 REJECTED MATERIALS

A. Quantities of material wasted or disposed in a manner not called for in the Specifications; rejected loads of material, including material rejected after it has been placed by reasons of the failure of Contractor to conform to the provisions of the Specifications; material not unloaded from the transporting vehicle;

material placed outside the limits indicated by the Construction Drawings or established by County; or material remaining on hand after completion of the Work, will not be paid for, and such quantities will not be included in the final total quantities. No compensation will be made for loading, hauling, and disposing of rejected material.

1.8 PAY ITEMS

1. Mobilization/Demobilization (Bid Item 1)

a. Measurement by lump sum (LS), based on mobilizing equipment and labor to perform work and demobilizing from and cleaning the site after all work and testing has been performed and accepted by the County/Engineer.

b. Payment shall be lump sum (LS). Payment shall be in accordance with Section 8-1.03.B of the Standard Specifications. Includes work described in Section 01010, 01200, 01300, 01310, 01400, 01500, 01560, 01600, 01630, and 01700, except as specifically detailed on other bid items.

August 2022 Page 3 of 23 MEASUREMENT AND PAYMENT

2. Prepare Stormwater Pollution Prevention Plan (Bid Item 2)

a. Measurement by lump sum (LS).

b. Payment includes all costs to implement permit conditions associated with the Construction General Permit during construction including filing a Notice of Intent (NOI), payment of the permit fee, and preparation and implementation of a Storm Water Pollution Prevention Plan (SWPPP). This bid item also includes the preparation of a Spill Prevention Control and Countermeasures Plan (SPCCP), if required.

3. Health & Safety (Bid Item 3)

a. Measurement by lump sum (LS).

b. Payment shall be Lump Sum (LS). Payment includes all costs to prepare and implement a Health and Safety Plan (HASP) and Injury and Illness Prevention Plan (IIPP), respond to County/Engineer comments on the plans, providing appropriate personal protective equipment and any other necessary safety equipment associated with the waste relocation and plans. Contractor shall provide a Schedule of Values for this service to support the lump sum price. Payment also includes all costs to prepare and implement a Heavy Equipment Emissions Plan.

4. Traffic Control (Bid Item 4)

a. Measurement by allowance.

b. Payment shall be allowance. Payment includes all costs to prepare a Traffic Control Plan (TCP) as well as to provide labor, equipment, and materials to implement the TCP. Contractor shall provide a Schedule of Values for this service to support the allowed budget.

5. Layout of Work and Surveys (Bid Item 5)

a. Measurement by lump sum (LS).

b. Payment shall be lump sum (LS). Payment includes all costs to perform construction control and slope staking, surveys to complete quantities, surveys to document as-built conditions of the Construction, and the preparation of Record Drawings as described in Sections 01050 and 01052.

August 2022 Page 4 of 23 MEASUREMENT AND PAYMENT

6. Clearing and Stripping (Bid Item 6)

a. Measured by the acre (AC). Measurement will be based on a perimeter survey of the staked construction and stockpile areas as shown on the Construction Drawings where clearing and stripping is required.

b. Payment includes all costs to clear, grub, and strip the Module 1, Phase 4 and 5 partial final closure areas, Module 4, Phase 2 area and stockpile areas as shown on the Construction Drawings and described in Section 02110. Also includes all costs to stockpile stripped material and place in the designated stockpile location shown in the Construction Drawings and as described in Section 02110.

7. Selective Demolition (Bid Item 7)

a. Measured by the lump sum (LS).

b. Payment shall be lump sum (LS). The cost shall include full compensation for furnishing all labor, materials, equipment, tools, and accessories to remove downdrains and store for reuse, remove LFG piping and store for reuse, remove the existing rock slope protection and reuse it in the proposed trapezoidal drainage channel, and remove and dispose of the existing non-woven geotextile as shown on the Construction Drawings.

8. Waste Excavation and Relocation for Module 1, Phase 4 and 5 Partial Final Closure (Bid Item 8)

a. Measured by the cubic yard (CY). Measurement of waste excavation will be made by volumetric measurement of each truckload of existing waste encountered and excavated from the construction area and hauled to the working face of the landfill.

b. Payment shall be by cubic yard (CY). Payment includes all costs to remove existing immediate cover soil, excavate existing waste encountered within Module 1, Phase 4 and 5, load, and haul to the working face of the landfill as described in the Specifications and as shown on the Construction Drawings. There will be no charge to the Contractor for disposal of the waste in the landfill. Payment does not include waste generated by the Contractor during construction, nor any overlying intermediate cover soil removed and set aside for reuse. Payment includes placement of daily cover over exposed waste per Section 02112.

August 2022 Page 5 of 23 MEASUREMENT AND PAYMENT

9. Recompaction of Existing Intermediate Cover (Bid Item 9)

a. Measurement by the square foot (SF). Measurement based on perimeter survey; sloped areas will be equated based on actual surface area, not plan area.

b. Payment shall be by the square foot (SF). Payment includes all costs to rip and recompact the existing intermediate cover in areas to be incorporated into the final cover, including but not limited to moisture conditioning, compaction, and grading in accordance with the Construction Drawings and Specifications. This item does not include areas of waste excavation.

10. Excavation and Placement of Evapotranspirative (ET) Cover (Bid Item 10)

a. Measured by the weighted cubic yard (CY) of the bank excavation proportional to ET Cover placement as defined by the equation below:

Excavation and Placement of ET Cover =

VExcavation - VTotal Stockpiles - VEarthwork – VMid-Slope Bench where:

VExcavation = Measurement of excavation will be made by comparing pre-construction topography of Module 4, Phase 2 with post-excavation topography. Excavation pre-construction and post-construction topographies will be established by the Contractor by field survey of grades at a maximum 25-foot grid and major grade breaks. Volume calculations will be made using prismoidal methods between surface models.

VTotal Stockpiles = Summation of volumes of Bid Item 12: Excavation and Placement of Material to Stockpile C (Unsuitable), Bid Item 13: Excavation and Placement of Material to Stockpile D (Sand), and Bid Item 15:

Excavation and Placement of Material to Stockpile G (Operations Cover)

VEarthwork = Summation of volumes of Bid Item 37: Soil Operations Layer - Base, Bid Item 38: Screen and Place Soil Operations Layer - Side Slope, Bid Item 39: Screen and Stockpile Future Soil Operations Layer - Side Slope, Bid Item 14: Excavation and Placement as Engineered Fill, and Bid Item 57:

Excavation and Placement as Engineered Fill Berm

VMid-Slope Bench = Volume of Bid Item 20: Module 1 Mid-Slope Bench

b. Payment shall be made by the cubic yard (CY). Payment includes all costs to excavate soil within the soil borrow area, load, haul, and place as ET

August 2022 Page 6 of 23 MEASUREMENT AND PAYMENT

Cover and as described in the Specifications and as shown on the Construction Drawings. Payment shall also include all costs to segregate materials as directed by the County/Engineer. Payment also includes the placement, compaction and shaping of ET Cover soil to construct the stormwater diversion berm/access road berm, safety berm, and swales in Module 1, Phase 4 and 5 as shown on the Construction Drawings. Also includes supply, installation and maintenance of settlement plates to measure settlement throughout the duration of the construction.

11. Excavation of Stockpile B and Placement of ET Cover (Bid Item 11)

a. Measured by the in-place cubic yards (CY) of soil in Stockpile B.

Measurement of the Stockpile B placement will be made by comparing the pre-construction topography of the stockpile area and post-construction topography of the stockpile. Stockpile B pre-construction and post-construction topographies will be established by the Contractor by aerial survey of grades at 2-ft contours or field survey of grades at a maximum 25-foot grid and major grade breaks. Volume calculations will be made using prismoidal methods between surface models.

b. Payment shall be made by the cubic yard (CY). Payment includes all costs to excavate soil within Stockpile B, load, haul, and place in the module construction area as described in the Specifications and as shown on the Construction Drawings. Payment shall also include all costs to segregate materials as directed by the County/Engineer. Also includes track walking stockpile slopes to control future erosion.

12. Excavation and Placement of Material to Stockpile C (Unsuitable) (Bid Item 12)

a. Measured by the placed cubic yards (CY) of soil in Stockpile C.

Measurement of the Stockpile C placement will be made by comparing the pre-construction topography of the stockpile area and post-construction topography of the stockpile. Stockpile C pre-construction and post-construction topographies will be established by the Contractor by aerial survey of grades at 2-ft contours or field survey of grades at a maximum 25-foot grid and major grade breaks. Volume calculations will be made using prismoidal methods between surface models.

b. Payment shall be made by the cubic yard (CY). Payment includes all costs to excavate soil within the soil borrow area, load, haul, and place in Stockpile C as described in the Specifications and as shown on the Construction Drawings. Payment shall also include all costs to segregate materials as directed by the County/Engineer. Also includes track walking stockpile slopes to control future erosion.

August 2022 Page 7 of 23 MEASUREMENT AND PAYMENT

13. Excavation and Placement of Material to Stockpile D (Sand) (Bid Item 13)

a. Measured by the placed cubic yards (CY) of soil in Stockpile D.

Measurement of the Stockpile D placement will be made by comparing the pre-construction topography of the stockpile area and post-construction topography of the stockpile. Stockpile D pre-construction and post-construction topographies will be established by the Contractor by aerial survey of grades at 2-ft contours or field survey of grades at a maximum 25-foot grid and major grade breaks. Volume calculations will be made using prismoidal methods between surface models.

b. Payment shall be made by the cubic yard (CY). Payment includes all costs to excavate soil within the soil borrow area, load, haul, and place in Stockpile D as described in the Specifications and as shown on the Construction Drawings. Payment shall also include all costs to segregate materials as directed by the County/Engineer. Also includes track walking stockpile slopes to control future erosion.

14. Excavation and Placement to Engineered Fill (Bid Item 14)

a. Measured by the bank cubic yard (CY). Measurement of placement of engineered fill will be made by comparing pre-construction topography of the module construction area with post-construction topography depicting the engineered fill. Pre-construction topography will be established by the Contractor by aerial and/or field survey of existing grades. Survey will establish existing grades at a maximum 25-foot grid and establish major grade breaks. Post-construction topography will be established by similar survey at a maximum 25-foot grid and also established major grade breaks. Volume calculations will be made utilizing prismoidal methods.

b. Payment shall be made by the cubic yard (CY). Payment includes full compensation for providing all labor, equipment, material, and tools, to place engineered fill as described in Section 02200 and as shown on the Construction Drawings. Payment shall include any necessary excavation and hauling from the excavation area to complete the engineered fill.

15. Excavation and Placement of Material to Stockpile G (Operations Cover) (Bid Item 15)

a. Measured by cubic yard (CY). Measurement will be based on the volumetric capacity as shown on the Construction Drawings.

b. Payment shall be made by the cubic yard (CY). Payment includes all costs to excavate soil within the module construction area, load, haul, and

August 2022 Page 8 of 23 MEASUREMENT AND PAYMENT place in Stockpile G and as described in the Specifications and as shown on the Construction Drawings. Payment shall also include all costs to segregate materials as directed by the County/Engineer. The County will utilize the material in Stockpile G as daily operations cover. After the County completely depletes Stockpile G, the Contractor shall reconstruct stockpile G as described in the Specifications and as shown on the Construction Drawings.

16. Erosion Control Mat (Bid Item 16)

a. Measurement by the square foot (SF) of area installed in Module 1, Phase 4 and 5. Measurement based on a perimeter survey of the completed swale installations. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for erosion control mat lost due to damage resulting from either the fault or the negligence of the Contractor.

b. Payment will be by the square foot (SF). Includes all costs to furnish and install the erosion control mat as shown on the Construction Drawings and described in the Specifications. The cost shall include full compensation for furnishing all labor, materials, equipment, tools, accessories, and incidentals, and for performing all work necessary including, but not limited to, source quality control, installing, repairing, and all documentation required to complete and document the work consistent the Construction Drawings and as specified in Section 02272.

17. Final Cover Seeding (Bid Item 17)

a. Measured by acre (ac). Measurement will be based on a perimeter survey of the final cover seeding area in Module 1, Phase 4 and 5 Partial Final Closure areas, and existing Module 1 and as shown on the Construction Drawings.

b. Payment shall be by the acre (ac). Payment includes full compensation for providing all labor, material, equipment, tools, and incidentals required to hydroseed the areas shown on the Construction Drawings as described in Section 02271.

18. 18ӯ CMP Downdrain (Bid Item 18)

a. Measured by lineal foot (LF). Measurement based on actual surveyed length of new downdrain installed .

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the pipe, anchor system and associating fittings as

August 2022 Page 9 of 23 MEASUREMENT AND PAYMENT shown on the Construction Drawings and specified in Section 02230.

Includes all material, labor and equipment to over-steepen and notch in the existing v-ditch to allow installation of the proposed CMP downdrain outlet as shown on Construction Drawings. Also includes all work to excavate, furnish and install drop inlet structure, trash rack, and appurtenances as shown on the Construction Drawings and as described in the Specifications. Installation of ET cover used as backfill and any other necessary components to fully install the downdrain systems as shown on the Construction Drawings and described in the Specifications shall be included.

19. 30ӯ CMP Downdrain (Bid Item 19)

a. Measured by lineal foot (LF). Measurement based on actual surveyed length installed in Module 1 area.

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the pipe, anchor system and fittings as shown on the Construction Drawings and specified in Section 02230. Includes all material, labor and equipment to construct the inlet and connect the pipe to existing piping.

20. Module 1 Mid-Slope Bench (Bid Item 20)

a. Measured by the bank cubic yard (CY). Measurement of placement of engineered fill will be made by comparing pre-construction topography of the module construction area with post-construction topography depicting the engineered fill. Pre-construction topography will be established by the Contractor by aerial and/or field survey of existing grades. Survey will establish existing grades at a maximum 25-foot grid and establish major grade breaks. Post-construction topography will be established by similar survey at a maximum 25-foot grid and also established major grade breaks. Volume calculations will be made utilizing prismoidal methods.

b. Payment will be by cubic yard (CY). This price shall include full compensation for providing all labor, material, tools, and incidentals required to excavate, haul, moisture condition, grade to the required slope and shape, compact, and finish the subgrade for the mid-slope bench as shown on the Construction Drawings and as specified herein.

21. Grouted Rock Slope Protection (Bid Item 21)

a. Measured in tons (TN). Measurement based the quantity placed in Module 1, Phase 4 and 5 areas within the limits and to the neat line dimensions

August 2022 Page 10 of 23 MEASUREMENT AND PAYMENT shown on the Construction Drawings. Contractor will be responsible for verifying the thickness of material placed. No adjustments will be made in the area for uneven contours or for overfilling beyond the neat lines as shown on the Construction Drawings. Does not include the non-grouted rock slope protection.

b. Payment shall be by tons (TN). This payment includes full compensation for providing all labor, surveying, material, tools, excavation, grading, and incidentals required to supply and install the grouted rock slope protection in Module 1, Phase 4 and 5 as shown on the Construction Drawings and described in Section 02230.

22. Extension of Existing Gas Wells (Bid Item 22)

a. Measurement by each (EA) extension of the existing gas wells in Module 1, Phase 4 and 5 as shown on the Construction Drawings.

b. Payment includes the material purchase, supply, and labor for installation of each extension of existing gas wells as shown on the Construction Drawings and as specified herein.

23. Landfill Gas System Maintenance and Modifications (Bid Item 23)

a. Measured by Lump Sum (LS).

b. Payment includes all costs for temporary shut-downs, operation and maintenance during construction, and management of the landfill gas system in order to maintain its function throughout final cover construction. Payment includes all costs to disconnect, reconnect, and extend piping as necessary, to maintain full functionality of the system before and after construction. Payment also includes the purchase, supply and installation of landfill gas piping, valves, as necessary to carry out the work as described in the Construction Drawings and Specifications.

Contractor shall assume 50% of disconnected pipe will be suitable for reuse. Payment also includes all costs to produce and implement an LFG Work Plan.

24. Settlement Monuments (Bid Item 24)

a. Measured by each (EA) installed in Module 1, Phase 4 and 5 as shown on the Construction Drawings.

b. Payment includes all costs to furnish materials and install settlement monuments and install eco blocks as shown on the Construction Drawings and Section 02285.

August 2022 Page 11 of 23 MEASUREMENT AND PAYMENT

25. Class 2 Aggregate Base (Bid Item 25)

a. Payment shall be in tons (TN). Measurement will be based on the supplied purchase order(s). Contractor will be responsible for verifying the thickness is within specified tolerances by survey methods. No adjustments will be made in the area for uneven contours or for overfilling beyond the vertical neat lines as shown in Module 1, Phase 4 and 5 and Module 4, Phase 2 on the Construction Drawings.

b. Payment for Aggregate Base shall be by the tons (TN). This payment includes full compensation for providing all labor, material, tools, and incidentals required to supply and place aggregate base, moisture condition, compact with smooth drum roller, grade finish surface, and do all work as shown on the Construction Drawings and specified in Section 02200.

26. Woven Geotextile (Bid Item 26)

a. Measurement by the square foot (SF) of area installed in Module 1, Phase 4 and 5 and Module 4, Phase 2. Measurement based on a perimeter survey of the completed access road installations. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for geotextile lost due to damage resulting from either the fault or the negligence of the Contractor.

b. Payment will be by the square foot (SF). Includes all costs to furnish and install the geotextile as shown on the Construction Drawings and described in the Specifications. The cost shall include full compensation for furnishing all labor, materials, equipment, tools, accessories, and incidentals, and for performing all work necessary including, but not limited to, source quality control, installing, seaming, quality control testing, repairing, and all documentation required to complete and document the work consistent the Construction Drawings and as specified in Section 02771.

27. Over-Excavation of Unsuitable Material – Base (Bid Item 27)

a. Measured by cubic yard (CY).