Prima_-_LFGCCS_Zone_4_Phase_A_-_100%_Technical_Specifications_-_06-19-26.pdf

SPECIAL PROVISIONS

LFGCCS ZONE 4 PHASE A

PRIMA DESHECHA LANDFILL

Prima - LFGCCS Zone 4 Phase A Table of Contents

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Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx

TABLE OF CONTENTS

SECTION 01 00 00 PROJECT SUMMARY & MOBILIZATION

SECTION 01 20 00 MEASUREMENT AND PAYMENT

SECTION 01 21 00 ALLOWANCES

SECTION 01 32 16 PROGRESS SCHEDULES

SECTION 01 50 00 CONSTRUCTION SUPPORT

SECTION 01 55 26 TRAFFIC CONTROL

SECTION 01 57 23 CONSTRUCTION GENERAL PERMIT (CGP) COMPLIANCE

AND BIOLOGICAL MONITORING

SECTION 31 00 00 EARTHWORK

SECTION 31 10 00 CLEARING, GRUBBING, AND INFRASTRUCTURE

RELOCATION

SECTION 31 23 33 TRENCHING AND BACKFILLING

SECTION 31 25 00 SWPPP REQUIREMENTS AND EROSION CONTROL

IMPROVEMENTS

SECTION 32 00 00 MISCELLANEOUS CIVIL IMPROVEMENTS

SECTION 40 95 13 LANDFILL GAS IMPROVEMENTS

REFERENCES

Standard Specifications for Public Works Construction (SSPWC), 2024 Edition

Standard Plans for Public Works Construction (SPPWC), 2021 Edition

Caltrans Standard Specifications, 2024 Edition

Orange County Public Works (OCPW) Standard Plans, 2018 Edition (with 2021 Addenda)

Prima - LFGCCS Zone 4 Phase A Section 01 00 00 – Summary & Mob

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SECTION 01 00 00

PROJECT SUMMARY & MOBILIZATION

PART 1 - GENERAL

Summary

This section summarizes the project scope and mobilization/demobilization requirements. Detailed requirements are included in the applicable Specification sections and on the Construction Drawings.

Mobilization/Demobilization

Mobilization shall consist of expenditures for all preparatory work and operations, including but not limited to, bond and insurance costs; those costs deemed necessary for the movement of personnel, equipment, supplies, and incidentals to the project sites;

and for all other work and operations which must be performed or costs incurred prior to beginning work on the various contract items on the project site as well as the related demobilization costs anticipated at the completion of the project.

Temporary Facilities: The CONTRACTOR shall furnish, install, maintain, and remove all temporary facilities required to support the Work. Temporary facilities shall include office trailers, storage units, sanitary facilities, parking, utilities, and other facilities needed for construction activities.

(i) Office Trailers: The CONTRACTOR shall provide office trailers of adequate size, configuration, and condition for use by the CONTRACTOR’s staff and for the Owner’s Construction Manager, Inspector, and Construction Quality

Assurance (CQA) Monitor, as applicable.

(ii) Workspace Requirements: The CONTRACTOR shall provide a dedicated workspace for the Inspector or CQA Monitor with a desk, chair, lighting, electrical power, heating and cooling, and suitable accommodations for electronic documentation.

(iii) Services: Office trailers shall be fully operational with electrical service. If required by the OWNER or Construction Manager, the CONTRACTOR shall provide internet connectivity and any related equipment.

(iv) Installation and Maintenance: The CONTRACTOR shall be responsible for delivery, setup, leveling, anchoring, access steps or ramps, and utility connections. Temporary facilities shall be kept clean, safe, and in good working order throughout the Project.

(v) Removal: At demobilization, the CONTRACTOR shall remove all temporary facilities and restore areas affected by such facilities to pre-construction condition or as otherwise directed by the Construction Manager.

Procurement and Delivery of Materials: The CONTRACTOR shall be responsible for the timely procurement of all materials required for the Work and for arranging prompt delivery to the Site. Any delays resulting from material availability, supply chain

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Laydown Area Security: The CONTRACTOR shall be solely responsible for securing all laydown, staging, and storage areas. The CONTRACTOR shall provide fencing, locks, lighting, and other security measures as needed to protect materials, equipment, and Work in progress. Loss, theft, or damage to materials in the laydown area shall be the CONTRACTOR’s responsibility.

Salvage and Laydown Areas. The salvage area is as indicated on the Site Plan.

Laydown and storage areas will be designated by the OWNER during the initial project walkthrough. The CONTRACTOR shall use only those areas identified by the

OWNER and shall not occupy or store materials outside designated areas without prior written approval. The CONTRACTOR shall be solely responsible for maintaining, securing, and restoring these areas for the duration of the Project.

Definitions

Construction Manager (CM): The firm under contract with Orange County Waste

& Recycling (OCWR) to perform construction management for the project. CM shall either be professional ENGINEER registered in state of California or a certified

Engineering geologist responsible for certifying that construction was performed in accordance with the intent of the contract documents and design.

Inspector: The OCWR representative performing the observation and inspection, to ensure the work is performed in accordance with applicable codes, regulations, specification requirements, and applicable industry standards.

Construction Quality Assurance (CQA) Monitor: The Owner’s designated representative responsible for observing, documenting, and verifying that the Work complies with the Construction Quality Assurance requirements of the Contract

Documents. The CQA Monitor performs field observations, reviews testing and documentation, and communicates nonconforming work to the Owner, Construction

Manager, and CONTRACTOR. The CQA Monitor does not direct the

CONTRACTOR’s means and methods and does not replace the CONTRACTOR’s responsibility for Quality Control.

CONTRACTOR: The entity that has entered into a contract with the OCWR to perform the work as required by these Plans and Specifications, as described in

OCWR Contract Documents.

SUBCONTRACTOR: The entity that has entered into a contract with

CONTRACTOR to perform a portion of the work as required by these Plans and

Specifications, as described in OCWR Contract Documents.

ENGINEER: The firm that prepared the design drawings and specifications for this project is:

Tetra Tech BAS, Inc.

21700 Copley Drive, Suite 200

Diamond Bar, CA 91765

Contact: Sami H Ayass, P.E.

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Voice: (951) 836-0025

Fax: (909) 860-8017

E-mail: sami.ayass@tetratech.com

Quality Control: Those actions which provide a means to measure and regulate the characteristics of an item or service to comply with the requirements of the contract documents. The CONTRACTOR is responsible for Quality Control (QC) of all operations in accordance with applicable codes, regulations, specification requirements, and applicable industry standards.

Interpretation of Contract Documents

Specifications and Construction Drawings included in these Contract Documents describe the performance, quality requirements, location and general arrangement of materials and equipment, and establish the minimum standards for quality of workmanship and appearance.

A part of the Work that is necessary or required to make each installation satisfactory and operable for its intended purpose, even though it is not specifically included in the

Specifications or on the Drawings, shall be performed as incidental Work as if it were described in the Specifications and shown on the Construction Drawings (See OCWR

Contract Documents).

Project Description

The Project consists of the design, permitting, and construction of the Zone 4 Phase A

Landfill Gas (LFG) Collection and Control System (LFGCCS) header installation.

Work includes trenching, installation of new HDPE header piping, associated valves and appurtenances, tie‑ins to existing LFG infrastructure, backfilling, testing, and restoration of disturbed areas. The CONTRACTOR shall maintain compliance with all site and project specific regulatory permits throughout the Work and shall perform construction in a manner that does not interrupt ongoing landfill operations. The

CONTRACTOR shall account for site constraints including traffic control, construction sequencing, coordination with landfill operations, SUBCONTRACTOR scheduling, and material procurement.

Work of This Contract

(i) Except as otherwise specifically stated in applicable parts of these Contract

Documents, the CONTRACTOR shall provide and pay for labor, materials, equipment, tools, construction equipment, facilities, and services necessary for proper execution, testing, and satisfactory completion of the Work.

(ii) The completed Work will provide the OWNER with improvements to the

LFGCCS, including the fully installed Zone 4 Phase A header and associated connections to the existing LFG infrastructure, with the requirement that the

CONTRACTOR shall avoid damage to any existing infrastructure not designated for demolition or removal. Requirements for protection of utilities and existing facilities are further described in Section 01 50 00.

mailto:sami.ayass@tetratech.com

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The above description of the Work is for general information only, and in no way, limits the responsibility of the CONTRACTOR for accomplishing the Work in strict accordance with the Contract Documents.

Meetings and Coordination

Preconstruction meeting will be conducted between the Owner, Design ENGINEER, CM, CQA Monitor, and CONTRACTOR. Specification requirements for sequencing of construction will be reviewed and discussed. The CONTRACTOR shall present a construction plan for each construction sequence, as applicable, outlining the equipment, personnel, schedule, and materials required.

The CONTRACTOR will be required to attend and participate in weekly construction meetings to review the schedule, specification requirements, quality control requirements, and other concerns involved. The CONTRACTOR shall provide a two‑week Lookahead Schedule at every weekly meeting, updated to reflect current field conditions and constraints.

The CONTRACTOR shall use Trimble Unity Construct (formerly e‑Builder

Enterprise), a project management software, for all Project related documents and correspondence, including, but not limited to, submittals, Requests for Information, Change Order Requests, and payment applications. The CONTRACTOR is not required to purchase a user license for Trimble Unity Construct. Within three (3) days of Contract award, OCWR shall provide the CONTRACTOR and pertinent support personnel user access login information. OCWR will provide training and user support as determined necessary. If authorized in writing by OCWR, the CONTRACTOR may alternatively use VPO for specified workflows administered through OCWR

Engineering Support; in such case, references to Trimble Unity Construct in these

Specifications shall be understood to mean VPO for those designated workflows only.

The CONTRACTOR shall notify the designated OCWR system administrator within one (1) business day of any personnel changes requiring modification or deactivation of system access.

The CONTRACTOR may develop the Project Schedule using commercially available scheduling software of its choice; however, the format shall be compatible with PDF export and shall clearly display critical path, activity durations, logic ties, and float.

The OWNER does not warrant or guarantee the accuracy, performance, or output of any scheduling software used by the CONTRACTOR. Any errors, omissions, or misrepresentations caused by scheduling software shall be the CONTRACTOR’s sole responsibility and shall not relieve the CONTRACTOR from timely performance of the Work.

Within fourteen (14) calendar days of Notice of Award, the CONTRACTOR shall submit an initial Project Schedule for review and acceptance by the Owner. The Notice to Proceed (NTP) will not be issued until the OWNER has reviewed and accepted the initial Project Schedule. Upon issuance of NTP, the CONTRACTOR shall update the

Project Schedule to reflect the actual NTP date and any related adjustments to sequencing or logic. No construction activities shall begin prior to issuance of NTP.

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Manufacturers' Specifications and Instructions

Unless otherwise indicated or specified, all manufactured materials, products, processes, equipment, or the like shall be installed or applied in accordance with the manufacturers' instructions, directions, or Specifications. Said installation or application shall be in accordance with printed instructions furnished by the manufacturer of the material or equipment concerned for use under conditions similar to those at the jobsite. Submission of manufacturers’ product data and installation instructions is a required Submittal prior to start of related Work. Copies of such instructions shall be furnished to the Design ENGINEER and his acceptance thereof obtained before Work is begun.

Any deviation from the manufacturers' 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 manufacturers' recommendations. If any item of material or equipment is found to be installed not in accordance with the manufacturer's recommendations, the CONTRACTOR shall make all changes necessary to achieve such compliance.

Work Quality

All Work under this Contract shall be performed by qualified and experienced personnel in accordance with the best practices of the various trades involved and in accordance with the Construction Drawings, and reviewed shop drawings.

All Work shall be erected and installed plumb, level, and square, 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.

The CM, CQA Monitor, and Inspector, reserve the right to reject any materials and work quality that are 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 Owner.

Field Measurement

The 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 verify all dimensions in the field.

Permitting and Inspection

The Project has been approved by the Orange County Fire Authority (OCFA), 1 Fire

Authority Road, Irvine and Service Request No. SR538415 has been assigned for the

Fire Protection Plan.

The CONTRACTOR shall pay all inspection and permit fees required by OCFA including Permit pulling fees. The CONTRACTOR will be reimbursed for the direct costs of the permit and inspection fees as provided for in Bid Allowances, up to the actual costs verified by submitted receipts with the progress payment. It shall also be

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Cost for “re-inspections” that result from incomplete or in accurately installed work shall be borne by the CONTRACTOR at his non-reimbursable expense.

PART 2 - PRODUCTS

NOT USED

PART 3 - EXECUTION

NOT USED

PART 4 - MEASUREMENT AND PAYMENT

See Section 01 20 00.

****END OF SECTION****

Prima - LFGCCS Zone 4 Phase A Section 01 20 00 – Measurement & Payment

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SECTION 01 20 00

MEASUREMENT AND PAYMENT

PART 1 - GENERAL

Measurement and Payment

(a) Improvements placed beyond the limits indicated on the drawings will not be compensated unless authorized by the ENGINEER prior to installation.

(b) To facilitate progress payments, the Bid Schedule reflects the main elements of the various civil and miscellaneous improvements. Interim compensation will be based on the ENGINEER’S review and approval of the various components of the work completed during the pay period.

(c) Ten percent of the Contract Price will be withheld until final completion of the Work.

Nonpayment for Rejected or Unused Products

(a) Payment will not be made for the following:

(i) Loading, hauling, disposing or replacement of rejected, contaminated, or damaged material or material which does not meet product Specifications listed in the

Contract Documents.

(ii) Quantities of material wasted or disposed of in manner not called for under

Contract Documents.

(iii) Rejected loads of material, including material rejected after it has been placed by reason of failure of CONTRACTOR to conform to provisions of Contract

Documents.

(iv) Material not unloaded from transporting vehicle.

(v) Defective work not accepted by the ENGINEER/CQA Consultant.

(vi) Material remaining on hand after completion of Work.

PART 2 - PRODUCTS

NOT USED

PART 3 - EXECUTION

NOT USED

PART 4 - MEASUREMENT AND PAYMENT

General Conditions

(a) Bonds and Insurance (Pay Item 1.1)

(i) Submit required bonds for performance and labor and materials as required in the Agreement.

(ii) Full compensation for all labor, material, and equipment required for bonds and insurance, as represented by the Contract Documents, shall be included in the

CONTRACTOR’s lump sum price for bonds and insurance.

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(b) Mobilization/Demobilization (Pay Item 1.2)

(i) Full compensation for all labor, material, and equipment required for mobilization, as requested by the Contract Documents, shall be included in the

CONTRACTOR’s lump sum price for mobilization.

(ii) The dollar amount for mobilization, as reflected in the Proposal, shall not exceed

Seven percent of the total bid for the Project.

(iii) Fifty percent of the mobilization bid price, less retention, will be paid on the initial billing provided all equipment and temporary facilities are in place and bond fees paid. Forty percent of the bid price will be paid uniformly, on a monthly basis during the projected life of the Contract. Ten percent of the mobilization bid price will be paid on satisfactory removal of all facilities and equipment upon completion of the project.

(c) Construction Support Tasks (Pay Item 1.3)

(i) Full compensation for all labor, material, and equipment to perform all necessary task in Section 01 50 00 Construction Support, Section 01 32 16

Progress Schedules, and Section 01 55 26 Traffic Control shall be included in the CONTRACTOR’s lump sum price for Construction Support.

(ii) To facilitate progress payments, the CONTRACTOR may submit, for the review of the ENGINEER, a Schedule of Values, for costs associated with the applicable items (i.e., the items in Section 01 50 00 that are not identified with a separate bid item). Approval of the Schedule of Values will be at the sole discretion of the ENGINEER. The lump sum bid price will be paid uniformly, on a monthly basis during the projected life of the Contract. Items include, but are not limited to, preparing and submitting the Construction Activities

Stormwater Management Plan and complying with the approved Site Industrial

SWPPP and Construction General Permit (CGP), including full implementation, installation, and maintenance of all required Best Management

Practices (BMP) for interim erosion and sediment control.

Clearing and Grubbing

(a) Clearing, Grubbing and Removals (Pay Item 2.1)

(i) Full compensation for all labor, material, and equipment required for clearing, grubbing, and salvage and relocation of infrastructure (as indicated on the

Contract Drawings), as represented by the Contract Documents, shall be included in the CONTRACTOR’s lump sum (LS) price.

(ii) All clearing and grubbing, saw cutting, and removal of AC pavement, and all operations incidental to completing clearing, grubbing, or removal, shall be included in the CONTRACTOR’s price as required by the Specifications. This item includes the removal of all existing vegetation and trees within the project disturbance limits. Where Fuel Modification or Thinning Zones are required by the OWNER or the applicable fire authority, the CONTRACTOR shall perform thinning and invasive species removal within those designated zones as directed by the ENGINEER. In the absence of landscaping plans, vegetation removal

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(iii) To facilitate progress payments, the CONTRACTOR may submit for the approval of the ENGINEER, a Schedule of Values, which reflects a breakdown and distribution of costs between the various components of Clearing, Grubbing, and Relocation.

(iv) The final pay quantities will be determined by field verification that the work has been completed in accordance with the drawings and these Specifications.

Interim progress payments will be based on the CM evaluation of the estimated percentage of work completed during the subject period.

(v) Clearing and grubbing completed beyond the limits indicated on the drawings will not be compensated unless previously authorized by the ENGINEER.

(vi) All stream bed clearing and grubbing activities must be completed prior to

January 15th due to nesting season, all other clear and grub activities must be completed prior to February 15th.

Demolition (Reserved)

Earthwork

(a) Excavation Of Zone 4 Breccia Stockpile To Zone 1 Stockpile C

(i) Measurement:

(A) Measurement for payment for the following items shall be by cubic yard

(CY). Excavation and fill beyond the volume indicated on bid schedule will be compensated only if the additional excavation has been requested by the project geologist and/or approved and authorized by the ENGINEER.

(1) Excavation of Zone 4 Breccia Stockpile to Zone 1 Stockpile C (Pay

Item 4.1) - Final pay quantities will be determined by comparing the volumetric differences between the pre-construction topographic survey and the post-construction topographic indicated Payment.

(ii) Payment:

(A) Payment for the items listed in Article 4.4 (a) above shall be by their unit price(s) quoted in the Bid Form. The price(s) quoted shall include full compensation for furnishing all labor, tools, equipment and incidentals required for completing the work.

(B) Separate payment shall not be made for the following items. All costs for such Work shall be considered incidental and included in the prices quoted for the applicable related items of Work.

(1) Dust control

(2) Protection of exposed surfaces

(3) Stockpiling of excavated materials

(4) Required re-handling of materials

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(5) Shoring

(6) Delineation of work areas

(7) Dewatering

(8) Removal of saturated soils after rain events

(9) Moisture control

(10) Disposal of excess excavation

(11) Compaction

(12) Vehicle Maintenance

(13) Scales and/or weighing fees

(14) Grading and preparing stockpile, and borrow source

(15) Over building due to survey and equipment accuracy and tolerances

(16) Protection of imported soil stockpiles

(17) Control testing

(18) Traffic control required to support earthwork activities, complying with Section 01 55 26

(19) Grading for site cleanup

Final Cover (Reserved)

Liner Installation (Reserved)

Leachate Collection System (Reserved)

Landfill Gas Improvements

(a) 6" HDPE SDR-17 Pipe for LCRS Tie-in from Header to Existing 6" HDPE SDR-11

LCRS Risers, per Detail 4 - Sheet 18 (Pay Item 8.1)

Measurement: Measurement for the following item shall be by the linear foot (LF), determined by computing the actual linear footage of 6” HDPE SDR-17 header pipe material procured and installed to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the

ENGINEER or OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install as indicated, the materials including but not limited to 3" wide detectable gas line marker tape, 30” x 6” HDPE SDR 11 Molded Tees, 6" SDR 11

HDPE Molded Tees to tie-in to 6" HDPE SDR 11 LCRS Risers, Wellheads (QED

Precision Accu-flow or approved equal), 2” flex hose (Kana Flex or QED Solarguard), 6” HDPE SDR 11 elbows, 2” clamps for flex hose (Powerlock Clamp or QED

Clamping Kit), 6”x2” Fernco Coupling, 6” HDPE SDR-17 header pipe required to complete the work in place per Detail 4 – Sheet 18 within the limits indicated on the drawings. No separate payment will be made for tie‑ins, fittings, wellheads, risers, Special Provisions 5 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade, as all such work shall be considered incidental to this item.

All work shall be included as shown on the plans, as specified in the Standard

Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 6" HDPE SDR-17 Pipe installed in accordance with the limits indicated on the

Construction Drawings.

(b) 20" HDPE SDR-17 Pipe for Gas Conveyance (Below Grade), Through Native Soil, per

Detail 2 - Sheet 17 (Pay Item 8.2)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 20” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 20” HDPE SDR-17 header pipe required to complete the work in place per Detail 2 – Sheet 17 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special

Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 20" HDPE SDR-17 Pipe installed in accordance with the limits indicated on the Construction Drawings.

(c) 24" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil with

2" HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained

Forcemain Pipes, per Detail 2 - Sheet 17 (Pay Item 8.3)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 24” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 24” HDPE SDR-17 header pipe, 2" DR11 X 4" DR17 dual contained condensate forcemain pipe and 2" HDPE SDR-9 air supply pipe required to complete the work in place per Detail 2 – Sheet 17 within the limits indicated on the drawings.

No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and

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Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 24" HDPE SDR-

17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-17 x 2" HDPE

SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings.

(d) 30" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil with

2" HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained

Forcemain Pipes, per Detail 2 – Sheet 17 and Detail 3 - Sheet 21 (Pay Item 8.4)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 30” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 30” HDPE SDR-17 header pipe, 2" DR11 X 4" DR17 dual contained condensate forcemain pipe and 2" HDPE SDR-9 air supply pipe required to complete the work in place per Detail 2 – Sheet 17 and Detail 3 – Sheet 21 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard

Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 30" HDPE SDR-17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-

17 x 2" HDPE SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings.

(e) 30" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Asphalt with 2"

HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained

Forcemain Pipes, per Details 2 and 4 - Sheet 21 (Pay Item 8.5)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 30” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through existing asphalt road, backfilling of native soil, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to

3" wide detectable gas line marker tape, 30” HDPE SDR-17 header pipe, 2" HDPE

SDR-9 air supply pipe, and 2" DR11 X 4" DR17 dual contained condensate forcemain pipe required to complete the work in place per Details 2 and 4 – Sheet 21 within the limits indicated on the drawings. No additional payment will be made for cutting, Special Provisions 7 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the

ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 30" HDPE SDR-17 Pipe Gas Conveyance, 2" HDPE SDR-9

Air, and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained Forcemain Pipes installed completed in accordance with the limits indicated on the Construction

Drawings. Final surface restoration, including aggregate base, geotextile, asphalt concrete, finish grading, grade matching, and reconstruction of the pavement section beyond trench backfill, shall be performed and paid for under the applicable paving items specified in Section 01 20 00, Paragraph 4.11 (Paving), and shall not be measured or paid for under this item.

(f) 30" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Gravel Operations

Road with 2" HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual

Contained Forcemain Pipes, per Detail 1 - Sheet 21 and 1 - Sheet 17 (Pay Item 8.6)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 30” HDPE SDR-17 header pipe procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through existing gravel road, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to Class 2

Aggregate Base, 12 oz/sy Non-Woven Geotextile, 3" wide detectable gas line marker tape, 30” HDPE SDR-17 header pipe, 2" HDPE SDR-9 air supply pipe, and 2" DR11

X 4" DR17 dual contained condensate forcemain pipe required to complete the work in place per Detail 1 – Sheet 21 within the limits indicated on the drawings.

CONTRACTOR to exercise caution while trenching alongside existing liner. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 30" HDPE SDR-

17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-17 x 2" HDPE

SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings. Final surface restoration, including crushed aggregate base, geotextile, finish grading, grade matching, and restoration of the gravel road section beyond trench backfill, shall be performed and paid for under the applicable paving items specified in Section 01 20 00, Paragraph 4.11 (Paving), and shall not be measured or paid for under this item.

(g) 36" HDPE SDR-17 Pipe Gas Conveyance, (Above Grade) In and Common with 2”

HDPE SDR-9 Air Line, per Detail 4 - Sheet 16 (Pay Item 8.7)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 36” HDPE SDR-17 header pipe

Special Provisions 8 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 36” HDPE SDR-17 header pipe, 2" HDPE SDR-9 air supply pipe, and

5’-8” x 8’-0” x 6’-0” Class B concrete anchors, required to complete the work in place per Detail 4 – Sheet 16 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special

Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 36" HDPE SDR-17 Pipe Gas

Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual

Contained Forcemain Pipes installed in accordance with the limits indicated on the

Construction Drawings.

(h) 36" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil with

2" HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained

Forcemain Pipes, per Detail 2 - Sheet 17 (Pay Item 8.8)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 36” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 36” HDPE SDR-17 header pipe, 2" DR11 X 4" DR17 dual contained condensate forcemain pipe and 2" HDPE SDR-9 air supply pipe required to complete the work in place per Detail 2 – Sheet 17 within the limits indicated on the drawings.

No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 36" HDPE SDR-

17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-17 x 2" HDPE

SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings.

(i) 36" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil with

2" HDPE SDR-9 Air Pipe, per Detail 2 - Sheet 17 (Pay Item 8.9)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 36” HDPE SDR-17 header pipe, Special Provisions 9 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx

2" HDPE SDR-9 air supply pipe, material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 36” HDPE SDR-17 header pipe, and 2" HDPE SDR-9 air supply pipe required to complete the work in place per Detail 2 – Sheet 17 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard

Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 36" HDPE SDR-17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-

17 x 2" HDPE SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings.

(j) 36" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Gravel Operations

Road with 2" HDPE SDR-9 Air and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual

Contained Forcemain Pipes, per Detail 1 - Sheet 17 (Pay Item 8.10)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 36” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through existing gravel road, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to Class 2

Aggregate Base, 12 oz/sy Non-Woven Geotextile, 3" wide detectable gas line marker tape, 36” HDPE SDR-17 header pipe, 2" HDPE SDR-9 air supply pipe, and 2" DR11

X 4" DR17 dual contained condensate forcemain pipe required to complete the work in place per Detail 1 – Sheet 17 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual square footage of 36" HDPE SDR-

17 Pipe Gas Conveyance, 2" HDPE SDR-9 Air, and 4" HDPE SDR-17 x 2" HDPE

SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings. Final surface restoration, including aggregate base, geotextile, finish grading, grade matching, and restoration of gravel road section beyond trench backfill, shall be performed and paid for under the applicable paving

Special Provisions 10 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx items specified in Section 01 20 00, Paragraph 4.11 (Paving), and shall not be measured or paid for under this item.

(k) Dual 24" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Gravel

Operations Tunnel with Air Or Forcemain, per Details 1, 5 and 6 - Sheet 18 (Pay Item

8.11)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 24” HDPE SDR-17 header pipe material procured to the limits indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through existing gravel road, backfilling, bedding, equipment, miscellaneous fittings for air and forcemain pipe, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, set of parallel 24” HDPE SDR-

17 header pipes with 2" HDPE SDR-9 air supply pipe or 2" DR11 X 4" DR17 dual contained condensate forcemain pipe respectively, required to complete the work in place per Detail 1 – Sheet 18 within the limits indicated on the drawings. Large fabricated fittings, reducers, elbows, wyes, and special tunnel assemblies for the header pipe are not included in this item. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the

ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 24" HDPE SDR-17 Pipe Gas Conveyance, 2" HDPE SDR-9

Air, and 4" HDPE SDR-17 x 2" HDPE SDR-11 Dual Contained Forcemain Pipes installed in accordance with the limits indicated on the Construction Drawings. Final surface restoration, including aggregate base, slurry embedment, geotextile, finish grading, grade matching, and restoration of gravel road section beyond trench backfill, shall be performed and paid for under the applicable paving items specified in Section

01 20 00, Paragraph 4.11 (Paving), and shall not be measured or paid for under this item.

(l) Trench and Realign 22" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through

Native Soil, per Detail 2 - Sheet 17 (Pay Item 8.12)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of existing 22” HDPE SDR-17 header pipe to be realigned as indicated on the drawings. Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or

OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through native soil, realignment of existing pipe, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to

3" wide detectable gas line marker tape required to complete the work in place per

Special Provisions 11 Tetra Tech X:\PROJECTS\ORANGE COUNTY CA\197-2024-0180 - PRIMA LFGCCS ZONE 4 HEADER DESIGN\Project Design\Technical Specifications\Prima - LFGCCS

Zone 4 Phase A - 100% Technical Specifications - 06-19-26.docx

Detail 2 – Sheet 17 within the limits indicated on the drawings. No additional payment will be made for cutting, trimming, damage to existing infrastructure, or adjustments required to achieve proper alignment or grade. All work shall be included as shown on the plans, as specified in the Standard Specifications and these Special Provisions, and as directed by the ENGINEER. Final pay quantities shall be determined from survey verification of the actual linear footage of 22" HDPE SDR-17 Pipe Gas Conveyance

Pipes realigned in accordance with the limits indicated on the Construction Drawings.

(m) 36" CMP Road Crossing Through Asphalt, per Detail 5 - Sheet 16 Type II (Pay Item

8.13)

Measurement: Measurement for the following items shall be by the linear foot (LF), determined by computing the actual linear footage of 36” 16 gauge Corrugated Steel

Pipe (CSP/CMP) material procured to the limits indicated on the drawings.

Improvements beyond those limits will not be compensated unless previously authorized by the ENGINEER or OWNER.

Payment: Payment will be made at the contract unit price per linear foot (LF). The price paid includes full compensation for excavation through existing asphalt road, backfilling, bedding, equipment, miscellaneous fittings, connections, labor, and any incidentals necessary to install the materials including but not limited to 3" wide detectable gas line marker tape, 24” HDPE SDR-17 header pipes, 2" HDPE SDR-9 air supply pipe, 2" DR11 X 4" DR17 dual contained condensate forcemain pipe, 36” 16 gauge CSP, hydrated bentonite, required to complete the work in place per Detail 5 –

Sheet 16 Type II within the limits indicated on the drawings.