KLF_M5P1_Technical_Specs_2026-08-13.pdf

Technical Specifications Module 5 Base Liner System

Kiefer Landfill

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 2026

Special Provisions

Kiefer Landfill TECHNICAL SPECIFICATIONS

Geo-Logic Associates Technical Specifications August 2026 Page 1 of 2 Table of Contents

TABLE OF CONTENTS

DIVISION 1 – GENERAL REQUIREMENTS NO. OF PAGES

Section 01010 Summary of Work 7 Section 01025 Measurement and Payment 22 Section 01035 Modification Procedures 2 Section 01050 Field Engineering 2 Section 01052 Layout of Work and Surveys 4 Section 01090 References 5 Section 01190 Health and Safety 4 Section 01200 Project Meetings 4 Section 01300 Submittals 4 Section 01310 Construction Schedule 2 Section 01400 Quality Control 3 Section 01500 Construction Facilities 6 Section 01560 Temporary Controls 10 Section 01600 Material and Equipment 2 Section 01630 Product Options and Substitutions 2 Section 01700 Contract Closeout 4

SECTION 2 – SITEWORK NO. OF PAGES

Section 02070 Selective Demolition 2 Section 02110 Clearing and Stripping 2 Section 02169 Protective Plywood Cover 1 Section 02200 Site Earthwork 23 Section 02230 Surface Water Drainage Structures 5 Section 02270 Erosion and Sediment Control 4 Section 02271 Seeding 5 Section 02589 Electric Leak Location Survey Support 5 Section 02710 High-Density Polyethylene Pipe 7 Section 02711 Corrugated High Density Polyethylene (HDPE) Pipe 4 Section 02771 Geotextile 9 Section 02774 Drainage Geocomposite 10 Section 02778 HDPE Geomembrane 29 Section 02779 Geosynthetic Clay Liner 12 Section 02800 Pressure Testing of Pipe 2

Kiefer Landfill TECHNICAL SPECIFICATIONS

Geo-Logic Associates Technical Specifications August 2026 Page 2 of 2 Table of Contents

DIVISION 3 – CONCRETE NO. OF PAGES

Section 03300 Cast-In-Place Concrete 9

DIVISION 15 – MECHANICAL NO. OF PAGES

Section 15000 Mechanical System 8 Section 15200 Valves 6

DIVISION 16 – ELECTRICAL NO. OF PAGES

Section 16000 Electrical Work 24

Division 1

Kiefer Landfill DIVISION 1 - GENERAL REQUIREMENTS

Geo-Logic Associates Section 01010 February 2026 Page 1 of 7 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.

February 2026 Page 2 of 7 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 5 base liner system. The Module 5 Base Liner System will be constructed in two phases (Module 5, Phase 1 and Module 5, Phase

2) under two separate construction contracts. The Module 5, Phase 1 lined area is approximately 24 acres and Module 5, Phase 2 lined area is approximately 25.3 acres.

B. The project includes including excavating and stockpiling of soils, geosynthetics installation, construction of the leachate collection and removal system (LCRS) gravel and piping, and stormwater components.

C. The Module 5 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, white on black, textured white side up

• Primary Geosynthetic Clay Liner (GCL)

• Secondary geocomposite (nonwoven geotextile on top and bottom)

• 60-mil thick HDPE DST secondary geomembrane, white on black, textured white side up

• 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)

• 60-mil thick HDPE white on black, single-sided textured (SST) primary geomembrane, smooth white side up

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• Primary GCL

• 40-mil thick HDPE DST moisture barrier geomembrane, white on black, textured white side up

• Prepared subgrade

D. 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. Module 5 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 are 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.

February 2026 Page 4 of 7 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 groundwater seepages.

g. Supply and installation of Module 5 geosynthetic liner system components.

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

i. Supply and installation of electrical, power supply, pumps, control panels and leachate force main (Module 5, Phase 1 only).

j. Supply and installation of landfill gas header and condensate sumps (Module 5, Phase 1 only).

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

l. Supply and installation of geosynthetics ballast system.

m. Providing support for electric leak location survey (ELLS).

n. Construction of stormwater control facilities.

o. Erosion control including hydroseeding.

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

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

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

8. 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).

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

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10. 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 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 near 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

February 2026 Page 6 of 7 SUMMARY OF WORK 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.

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 (SMAQMD).

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

4. Sacramento County Environmental Management Department acting as the local enforcement agency (LEA).

February 2026 Page 7 of 7 SUMMARY OF WORK

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.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

END OF SECTION

Geo-Logic Associates Section 01025 August 2026 Page 1 of 22 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 2026 Page 2 of 22 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 2026 Page 3 of 22 MEASUREMENT AND PAYMENT

2. Regulatory Compliance (Bid Item 2)

a. Measurement by lump sum (LS).

b. Payment includes:

1. All costs to implement permit conditions associated with the Construction General Permit during construction including filing a Notice of Intent (NOI), Notice of Termination (NOT), preparation of annual reports, payment of the permit fee, and preparation and implementation of a Storm Water Pollution Prevention Plan

(SWPPP).

2. All costs to prepare and implement a Spill Prevention Control and Countermeasures Plan (SPCCP), if required.

3. All costs to prepare and implement a Heavy Equipment Emissions Plan.

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. Contractor shall provide a Schedule of Values for this service to support the lump sum price.

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 grade staking, surveys to estimate bid item quantities, surveys to document as-built conditions of the Construction, August 2026 Page 4 of 22 MEASUREMENT AND PAYMENT and the preparation of Record Drawings as described in Sections 01050 and 01052.

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 5 area, road alignment and stockpile areas as shown on the Construction Drawings and described in Section 02110. Also includes all costs to load, haul, and place stripped material and place in the designated stockpile location shown in the Construction Drawings and as described in Section 02110.

7. Excavation and Placement of Material to Stockpile A (Bid Item 7)

a. Measured by the placed cubic yards (CY) of soil excavated and placed in Stockpile A. Measurement of the Stockpile A placement will be made by comparing the pre-construction topography of the Stockpile A area and post-construction topography of the Stockpile A area. Stockpile A 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 from within the construction area, load, haul, and place in Stockpile A 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 and track-walking stockpile slopes to control future erosion.

8. Excavation and Placement of Material to Stockpile B (Bid Item 8)

a. Measured by the placed cubic yards (CY) of soil excavated and placed in Stockpile B. Measurement of the Stockpile B placement will be made by comparing the pre-construction topography of the Stockpile B area and post-construction topography of the Stockpile B area. 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

August 2026 Page 5 of 22 MEASUREMENT AND PAYMENT 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 from within the construction area, load, haul, and place in Stockpile B 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.

9. Excavation and Placement of Material to Stockpile C (Bid Item 9)

a. Measured by the placed cubic yards (CY) of soil excavated and placed in Stockpile C. Measurement of the Stockpile C placement will be made by comparing the pre-construction topography of the Stockpile C area and post-construction topography of the Stockpile C area. 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 from within the construction 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.

10. Excavation and Placement to Engineered Fill (Bid Item 10)

a. Measured by the bank cubic yard (CY). Measurement of placement of engineered fill will be made by comparing pre-construction topography of the 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 between surface models.

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

August 2026 Page 6 of 22 MEASUREMENT AND PAYMENT

Construction Drawings. Payment shall include any necessary excavation and hauling from the excavation area(s) to complete the engineered fill.

11. Class 2 Aggregate Base (Bid Item 11)

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 on the Construction Drawings.

b. Payment for Aggregate Base shall be by the ton (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.

12. Woven Geotextile (Bid Item 12)

a. Measurement by the square foot (SF) of area installed. 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.

13. Over-Excavation of Unsuitable Material – Base (Bid Item 13)

a. Measured by cubic yard (CY). Measurement of over-excavated unsuitable material replaced with satisfactory subgrade material over the base area of the Module 5 area shall be based on the surveyed area identified by the County/Engineer multiplied by a 1-foot depth.

b. Payment shall be made by the cubic yard (CY). Payment includes full compensation for providing all labor, equipment, material, and tools, to

August 2026 Page 7 of 22 MEASUREMENT AND PAYMENT provide a subgrade surface over the base area that will meet specification requirements for the placement of geosynthetic material. Work includes over-excavation of unsuitable material 1-foot below subgrade elevation, excavation of satisfactory material from the excavation or soil stockpile areas, hauling of unsuitable soils to the designated stockpile, hauling of satisfactory material to the base of Module 5, and compaction and grading of the satisfactory material to meet the engineered fill requirements described in Section 02200. This work is to occur only in areas where the County/Engineer has directed the Contractor to carry out this work.

14. Over-Excavation of Unsuitable Material – Side Slope (Bid Item 14)

a. Measured by cubic yard (CY). Measurement of over-excavated unsuitable material replaced with satisfactory subgrade material on the side slopes of the Module 5 area. Measurement shall be based on the surveyed area identified by the County/Engineer multiplied by a 1-foot depth.

b. Payment shall be made by the cubic yard (CY). Payment includes full compensation for providing all labor, equipment, material, and tools to provide a subgrade surface over the side slope area that will meet specification requirements for the placement of geosynthetic material.

Work includes over-excavation of unsuitable material 1-foot below subgrade elevation, excavation of satisfactory material from the excavation or soil stockpile area, hauling of unsuitable soils to the designated stockpile, hauling of satisfactory material to the side slopes of the Module 5, and compaction and grading of the satisfactory material to the meet the engineered fill requirements described in Section 02200.

Payment includes overbuilding and cutting back of slopes as necessary to achieve the requirements of Section 02200. This work is to occur only in areas where the County/Engineer has directed the Contractor to carry out this work.

15. Waste Excavation at Existing Module Liner Termination (Bid Item 15)

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 excavate existing waste encountered within the construction area, load, and haul to the working face of the landfill as described in the Specifications and as shown on the Drawings. There will be no charge to

August 2026 Page 8 of 22 MEASUREMENT AND PAYMENT the Contractor for disposal of the waste in the landfill. Payment does not include waste generated by the Contractor during construction.

16. Liner Subgrade Preparation (Bid Item 16)

a. Measurement by the square foot (SF). Measurement based on perimeter survey of the liner limit. 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 prepare the subgrade including but not limited to moisture conditioning, compaction, grading, rock removal, and smooth drum rolling in preparation for geosynthetic installation in accordance with the Construction Drawings and Specifications.

17. Geosynthetic Clay Liner (Bid Item 17)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation and GCL placed in the anchor trenches in accordance with the vertical and horizontal neat line dimensions shown on the Drawings. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage.

No measurement will be made for GCL lost due to damage resulting from either the fault or the negligence of the Contractor.

b. Payment shall be by the square foot (SF). Includes all costs to furnish and install the fabric-encased GCL 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 with the Drawings and as described in Section 02779.

18. 60-mil Double-Sided Textured HDPE Geomembrane (Bid Item 18)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation and geomembrane placed in the anchor trenches in accordance with the vertical and horizontal neat line dimensions shown on the Drawings. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for geomembrane lost due to damage resulting from either the fault or the negligence of the Contractor.

August 2026 Page 9 of 22 MEASUREMENT AND PAYMENT

b. Payment will be by the square foot (SF). Includes all costs to furnish and install double-sided textured geomembrane as shown on the 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, material for seam overlaps, quality control testing (destructive and nondestructive), repairing any defects, and all documentation required to complete the work consistent with the Construction Drawings and as described in Section 02778.

19. 60-mil Single-Sided Textured HDPE Geomembrane (Bid Item 19)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation and geomembrane placed in the anchor trenches in accordance with the vertical and horizontal neat line dimensions shown on the Drawings.

Measurement shall include the temporary geomembrane flap based on the field surveyed length multiplied by the neat line dimensions as shown on the Construction Drawings. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for geomembrane 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 single-sided textured geomembrane 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, material for seam overlaps, quality control testing (destructive and nondestructive), repairing any defects, and all documentation required to complete the work consistent with the Drawings and as described in Section 02778.

20. 40-mil Double-Sided Textured HDPE Geomembrane (Bid Item 20)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation and geomembrane placed in the anchor trenches in accordance with the vertical and horizontal neat line dimensions shown on the Drawings. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for geomembrane lost due to damage resulting from either the fault or the negligence of the Contractor.

August 2026 Page 10 of 22 MEASUREMENT AND PAYMENT

b. Payment will be by the square foot (SF). Includes all costs to furnish and install double-sided textured geomembrane as shown on the 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, material for seam overlaps, quality control testing (destructive and nondestructive), repairing any defects, and all documentation required to complete the work consistent with the Construction Drawings and as described in Section 02778.

21. Geocomposite (Bid Item 21)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation and geocomposite placed in the anchor trenches in accordance with the vertical and horizontal neat line dimensions shown on the Drawings. No adjustment will be made for uneven contours, overlap at seams, repairs, or wastage. No measurement will be made for geocomposite 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 geocomposite 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 02774.

22. 8 oz/sy Nonwoven Geotextile Filter (Bid Item 22)

a. Measurement by the square foot (SF) of surface area installed above the LCRS gravel, wrapping the sand trench, and under rock slope protection.

Measurement for material installed above the LCRS gravel and under the rock slop protection shall be based on a perimeter survey of the completed installation. Measurement for material installed in the sand trench shall be based on the neat line dimensions shown on the Construction Drawings.

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.

August 2026 Page 11 of 22 MEASUREMENT AND PAYMENT

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.

23. 12 oz/sy Nonwoven Geotextile Cushion (Bid Item 23)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation.

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.

24. Soil Operations Layer – Base (Bid Item 24)

a. Measurement by the in-place cubic yard (CY) of soil operations layer placed on the base of the Module. Measurement will be based on the surveyed area multiplied by the neat line thickness shown on the Construction Drawings. 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 line dimension as shown on the Drawings.

b. Payment will be by the cubic yard (CY) in-place. Payment includes all costs to furnish equipment and labor to excavate, load, haul, screen, and place on-site supplied material as shown on the Construction Drawings and as described in the Specifications. Payment includes all costs to excavate, shape, haul, and place material to construct the geotextile-lined sand trenches in the operations layer as shown in the Construction Drawings.

Payment also includes all costs to load, haul, and place screening overage material in Stockpile C as described in the Specifications.

August 2026 Page 12 of 22 MEASUREMENT AND PAYMENT

25. Soil Operations Layer – Side Slope (Bid Item 25)

a. Measurement by the in-place cubic yard (CY) of soil operations layer placed within the Module. Measurement will be based on the surveyed area multiplied by the neat line thickness shown on the Construction Drawings. 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 line dimension as shown on the Drawings.

b. Payment will be by the cubic yard (CY) in-place. Payment includes all costs to furnish equipment and labor to excavate, load, haul, screen, and place on-site supplied material as shown on the Construction Drawings and as described in the Specifications. Payment also includes all costs to load, haul and place screening overage material in Stockpile C as described in the Specifications.

26. Screen and Stockpile Future Soil Operations Layer – Side Slope (Bid Item 26)

a. Measurement by cubic yard (CY) of future side slope soil operations layer.

Measurement will be based comparing pre-construction topography of the screened future soil operations layer stockpile area as depicted on the Construction Drawings with post-stockpile topography.

b. Payment will be by the cubic yard (CY) in-place. Payment includes all costs to furnish equipment and labor to excavate, load, haul, screen, and stockpile material as shown on the Construction Drawings and as described in the Specifications. Payment also includes all costs to load, haul, and place screening overage material in Stockpile C as described in the Specifications.

27. Gravel Drainage Layer (Bid Item 27)

a. Measurement for drainage gravel layer shall be by cubic yard (CY).

Measurement will be based on the surveyed area of installation multiplied by the neat line thickness shown on the Construction Drawings. 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 line dimension as shown on the Drawings. Includes drainage gravel material in the leak detection trench.

b. Payment shall be by cubic yard (CY). The price includes full compensation for providing all labor, material, tools, and incidentals required to supply and install the gravel drainage layer as shown on the Construction Drawings and as specified in Section 02200. Payment shall also include all

August 2026 Page 13 of 22 MEASUREMENT AND PAYMENT costs associated with repairing any damage during placement to underlying geosynthetics.

28. Sand Bag Ballast System (Bid Item 28)

a. Measurement by the square foot (SF) of surface area installed.

Measurement based on a perimeter survey of the completed installation.

No measurement will be made for sand bag ballast system lost due to damage resulting from either the fault or the negligence of the Contractor.

The measured area includes sand bag ballast system to the neat line dimensions shown on the Construction Drawings.

b. Payment shall be by square foot (SF). The price includes full compensation for providing all labor, material, tools, and incidentals required to supply and install the sand bag ballast system as shown on the Construction Drawings. Payment shall also include repairing any damage during placement to underlying geosynthetics. Payment shall include sand bags, ties, ropes, anchoring system, and geomembrane tubes filled with slurry mix.

29. Division Berm Liner Tie-In (Bid Item 29)

a. Measurement by the lineal foot (LF) of the Module 5 to Module 4 division berm tie-in, based on the field survey.

b. Payment shall be by lineal foot (LF). Payment includes all costs to locate, excavate, prepare, shape, backfill, compact, or otherwise construct the liner base tie-in as shown on the Construction Drawings and described in the Specifications.

30. Side Slope Liner Tie-In (Bid Item 30)

a. Measurement by the lineal foot (LF) of the existing Module to new slope liner tie-in, based on the field survey.

b. Payment shall be by lineal foot (LF). Payment includes all costs to locate, excavate, prepare, shape, backfill, compact, or otherwise construct the side slope liner tie-in as shown on the Construction Drawings and described in the Specifications.

31. Perimeter Anchor Trench (Bid Item 31)

a. Measurement by the linear foot (LF) of the installed perimeter anchor trench based on field survey.

August 2026 Page 14 of 22 MEASUREMENT AND PAYMENT

b. Payment shall be by lineal foot (LF). This payment includes full compensation for providing all labor, material, equipment, tools, and incidentals required to locate, prepare, excavate, shape, backfill, and compact the perimeter anchor trench as shown on the Construction Drawings and specified in Section 02200. Payment shall also include repairing any damage to geosynthetics during backfill, and repairing damage to the existing stormwater drainage channel, existing roads, or other existing utilities.

32. Temporary Base Liner Termination (Bid Item 32)

a. Measurement by the linear foot (LF) of the temporary base liner termination based on field survey.

b. Payment shall be by lineal foot (LF). This payment includes full compensation for providing all labor, material, equipment, tools, and incidentals required to locate, prepare, excavate, shape, backfill, compact, and install plywood for the temporary base liner termination as shown on the Construction Drawings and specified in Section 02200. Payment shall also include repairing any damage to geosynthetics incurred during backfill.

33. Internal Bench Anchor Trench (Bid Item 33)

a. Measurement by the linear foot (LF) of the installed internal bench anchor trench based on field survey.

b. Payment shall be by lineal foot (LF). This payment includes full compensation for providing all labor, material, equipment, tools, and incidentals required to locate, prepare, excavate, shape, backfill and compact the internal bench anchor trench as shown on the Construction Drawings and specified in Section 02200. Payment shall also include repairing any damage to geosynthetics during backfill.

34. Temporary Side Slope Liner Termination (Bid Item 34)

a. Measurement by the linear foot (LF) of the constructed temporary side slope liner termination based on field survey.

b. Payment shall be by lineal foot (LF). This payment includes full compensation for providing all labor, material, equipment, tools, and incidentals required to locate, prepare, excavate, shape, backfill and compact for the temporary side slope liner termination as shown on the Construction Drawings and specified in Section 02200. Payment shall also include repairing any damage to geosynthetics during backfill.

August 2026 Page 15 of 22 MEASUREMENT AND PAYMENT

35. 3ӯ SDR-11 Perforated HDPE Pipe (Bid Item 35)

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

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the pipe and fittings as shown on the Construction Drawings and specified in Section 02710. All material, labor and equipment to connect to the existing piping at the liner termination are to be included in the unit price.

36. 6ӯ SDR-11 Solid HDPE Pipe (Bid Item 36)

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

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the pipes, and fittings as shown on the Construction Drawings and specified in Section 02710. All material, labor and equipment to construct cleanout riser support structures are to be included in the unit price.

37. 6ӯ SDR-11 Perforated HDPE Pipe (Bid Item 37)

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

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the leachate laterals, header pipes, and fittings as shown on the Construction Drawings and specified in Section 02710. All material, labor and equipment to connect the perforated pipe to the solid pipe and connect the header pipes to the lateral pipes are to be included in the unit price.

38. 18ӯ SDR-9 Perforated HDPE Pipe (Bid Item 38)

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

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the sump pipes and fittings as shown on the Construction Drawings and specified in Section 02711. All material, labor, and equipment to connect the perforated pipe to the solid pipe are to be included in the unit price.

August 2026 Page 16 of 22 MEASUREMENT AND PAYMENT

39. 18ӯ SDR-17 Solid HDPE Pipe (Bid Item 39)

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

b. Payment shall be by lineal foot (LF). Payment includes all costs to purchase, supply, and install the riser pipe and fittings as shown on the Construction Drawings and specified in Section 02710. All material, labor and equipment to construct concrete and CMP filled concrete support structures are to be included in the unit price.

40. 4ӯ Solid Corrugated HDPE Drain Pipe (Bid Item 40)

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

b. Payment shall be by lineal foot (LF). This price shall include full compensation for providing all labor, material, tools, and incidentals to excavate, compact, install and backfill the drain pipe as shown on the Construction Drawings and specified in Section 02711. If subsurface springs are encountered, the trench drain shall be installed to the limits identified by the Engineer based on in-situ conditions of the liner subgrade surface.

41. 4ӯ Perforated Corrugated HDPE Drain Pipe (Bid Item 41)

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

b. Payment shall be by lineal foot (LF). Payment shall be by lineal foot (LF).

This price shall include full compensation for providing all labor, material, tools, and incidentals to excavate, compact, install and backfill the geotextile-wrapped drain pipe as shown on the Construction Drawings and specified in Section 02711. If subsurface springs are encountered, the trench drain shall be installed to the limits identified by the Engineer based on in-situ conditions of the liner subgrade surface.

42. Drainage Channels (Bid Item 42)

a. Measured by lineal foot (LF) of the stormwater trapezoidal drainage channel and stormwater v-ditch. Measurement based on actual surveyed length installed.

b. Payment will be by linear foot (LF). This price shall include full compensation for providing all labor, material, tools, and incidentals

August 2026 Page 17 of 22 MEASUREMENT AND PAYMENT required to rip, excavate, moisture condition, grade to the required slope, compact, stockpile any excess soil at the stockpile area, and finish the subgrade for the drainage channel as shown on the Construction Drawings and as specified herein.

43. Rock Slope Protection (Bid Item 43)

a. Measured in tons (TN). Measurement based the quantity placed in tons and to the neat line dimensions shown on the Construction Drawings.

Measurement will be based on the supplied purchase order(s).