Prima_-_LFGCCS_Zone_4_Phase_A_-_100%_Bid_Schedule_Addendum_1_Rev1_10-07-26.pdf

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Attached to
DBB Prima Zone 4 Phase A Main Gas Line Project
Solicitation number
299-3104108-AR
Issued by
Orange County, San Francisco City, California

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Bid Schedule Addendum Summary

This is a Bid Schedule Addendum for the DBB Prima Zone 4 Phase A Main Gas Line Project solicited by the County of Orange, OC Waste & Recycling. The project involves the installation of a landfill gas collection and control system header at Prima Deshecha Landfill in San Juan Capistrano, California. The scope of work encompasses trenching, installation of HDPE header piping ranging from 6 to 48 inches in multiple configurations (below grade, asphalt road, and gravel road), butterfly header valves of varying sizes, condensate sumps, concrete valve vaults, HDPE fittings, tie-ins to existing landfill gas infrastructure, testing, backfilling, and surface restoration including asphalt paving. A mandatory pre-bid meeting and site visit is scheduled for September 30, 2026, at 9:00 a.m., with failure to attend resulting in bid rejection. Electronic bids are due October 12, 2026, at 2:00 p.m. through the County's OpenGov Procurement portal. Questions must be submitted by October 5, 2026, at 2:00 p.m. The contract award will be made following bid evaluation, with the successful bidder required to provide Performance and Payment Bonds each equal to 100 percent of the contract price within 14 calendar days of award. Bids remain valid for 365 days.

The estimated contract value is $9,120,900, with bidders required to submit 10 percent bid security. Bidders must hold a California Class A General Engineering Contractor's license and perform at least 51 percent of the Base Bid Amount with their own organization. Five contractors are pre-qualified: ARB, Inc.; Big Ben, Inc.; Environmental Construction, Inc.; Sukut Construction, LLC; and Toro Enterprises, Inc. The project exceeds five million dollars and requires at least 3 percent of total contract value to be subcontracted to certified Orange County Local Small Business (OCLSB) or Disabled Veteran Business Enterprise (DVBE) subcontractors. A 5 percent preference deduction (up to $100,000 maximum) applies to qualified OCLSB or DVBE bidders for evaluation purposes, though the awarded contract price remains the original bid price. The contract is subject to California prevailing wage requirements under Labor Code Section 1773 and contractor registration requirements under Section 1725.5. Work must be coordinated with the Orange County Fire Authority regarding the Fire Protection Plan and with ongoing landfill operations.

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BID SCHEDULE

<<BID NUMBER>>

PRIMA DESHECHA LANDFILL - LFGCCS ZONE 4 PHASE A

Construction Note(s)

Item No. Description of Work Qty Unit Unit Cost Total Cost

1. GENERAL CONDITIONS

1.1 Bonds and Insurance 1 LS -$

1.2 Mobilization/Demobilization 1 LS -$

1.3 Construction Support Tasks 1 LS -$

SPECIAL PROVISIONS

2. CLEARING AND GRUBBING

2.1 Clearing, Grubbing, and Removals 1 LS -$

3. DEMOLITION (RESERVED)

4. EARTHWORK

4.1 Excavation Of Zone 4 Breccia Stockpile To Zone 1 Stockpile C [DELETABLE] 200,000 CY -$

5. FINAL COVER (RESERVED)

6. LINER INSTALLATION (RESERVED)

7. LEACHATE COLLECTION SYSTEM (RESERVED)

8. LANDFILL GAS IMPROVEMENTS

45 8.1 6" HDPE SDR-17 Pipe for LCRS Tie-in from Header to Existing 6" HDPE SDR 11 LCRS Risers, per Detail 4 - Sheet 18

30 LF $ -

8, 64 8.2 20" HDPE SDR-17 Pipe for Gas Conveyance (Below Grade), Through Native Soil, per Detail 2 - Sheet 17

140 LF $ -

7, 19, 36 8.3 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

1,340 LF $ -

19, 36, 46, 68 8.4 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

1,040 LF $ -

55, 56, 62, 63 8.5 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 Detail 2 and 4 - Sheet 21

460 LF $ -

6, 53, 54, 58 8.6 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

1,480 LF $ -

4, 11, 27 8.7 36" HDPE SDR-17 Pipe Gas Conveyance, (Above Grade) In and Common with 2" HDPE SDR-9 Air Line, per Detail 4 - Sheet 16

160 LF $ -

19, 36, 47 8.8 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

720 LF $ -

19, 47 8.9 36" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil with 2" HDPE SDR-9 Air Pipe, per Detail 2 - Sheet 17

740 LF $ -

5, 53, 54 8.10 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

860 LF $ -

23, 40, 53, 54 8.11 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

640 LF $ -

33 8.12 Trench and Realign 22" HDPE SDR-17 Pipe Gas Conveyance (Below Grade), Through Native Soil, per Detail 2 - Sheet 17

60 LF $ -

22, 26 8.13 36" CMP Road Crossing Through Asphalt, per Detail 5 - Sheet 16 Type II 120 LF $ -

22, 59 8.14 36" CMP Road Crossing Through Native Road, per Detail 5 - Sheet 16 Type III 80 LF $ -

22, 59 8.15 42" CMP Road Crossing Through Native Road, per Detail 5 - Sheet 16 Type III 60 LF $ -

22, 26 8.16 42" CMP Road Crossing Through Asphalt Road, per Detail 5 - Sheet 16 Type II 140 LF $ -

22, 38 8.17 48" CMP Road Crossing Through Gravel Operations Road, per Detail 5 - Sheet 16 Type I 60 LF $ -

44 8.18 42" HDPE SDR-17 X 54" HDPE SDR 26 In-Line Condensate Sump Type II with bollard installation, per Detail 1 - Sheet 19

1 EA $ -

24 8.19 48" HDPE SDR-17 X 63" HDPE SDR 26 In-Line Condensate Sump Type I with bollard installation, per Detail 1 - Sheet 20

1 EA $ -

20, 21, 49 8.20 24” Butterfly Header Valve with 2” Ball Valve For Air Supply, 2” HDPE Ball Valve for Dual Contained Condensate Forcemain, and 2” Forcemain Cleanout Assembly, per Details 3 and 4 – Sheet 17

2 EA $ -

20, 21, 48 8.21 30” Butterfly Header Valve with 2” Ball Valve For Air Supply, 2” HDPE Ball Valve for Dual Contained Condensate Forcemain, and 2” Forcemain Cleanout Assembly, per Details 3 and 4 – Sheet 17

6 EA $ -

20, 21, 35 8.22 36” Butterfly Header Valve with 2” Ball Valve For Air Supply, 2” HDPE Ball Valve for Dual Contained Condensate Forcemain, and 2” Forcemain Cleanout Assembly, per Details 3 and 4 – Sheet 17

2 EA $ -

20, 21, 35 8.23 36” Butterfly Header Valve with 2” Ball Valve For Air Supply, 2” Forcemain Cleanout Assembly, and bollard installation, per Details 3 and 4 – Sheet 17

1 EA $ -

37 8.24 Traffic Rated Concrete Valve Vault, per Detail 4 – Sheet 17 4 EA $ -

13, 18 8.25 30" HDPE Tees with Blind Flanges (Includes Flange Adapter, Backup Ring, HDPE Blind Flange, Zinc-Plated Bolt Kit and Gasket), per Detail 1 - Sheet 16, and 5 - Sheet 17

13 EA $ -

12, 17 8.26 36" HDPE Tees with Blind Flanges (Includes Flange Adapter, Valve Extensions, Backup Ring, HDPE Blind Flange, Zinc-Plated Bolt Kit and Gasket), per Detail 1 - Sheet 16 and 5 - Sheet 17

1 EA $ -

40 8.27 36" HDPE SDR-11 Fabricated Wyes 2 EA $ -

BID SCHEDULE

<<BID NUMBER>>

PRIMA DESHECHA LANDFILL - LFGCCS ZONE 4 PHASE A

Construction Note(s)

Item No. Description of Work Qty Unit Unit Cost Total Cost

39 8.28 24" HDPE SDR-11 45° Elbows - Fabricated 2-Segment 10 EA $ -

28 8.29 36" X 30" HDPE SDR-11 Compact Concentric Reducer 4 EA $ -

28 8.30 30" X 24" HDPE SDR-11 Compact Concentric Reducer 4 EA $ -

50 8.31 1.5" HDPE SDR-9 Tee 1 EA $ -

50 8.32 2" HDPE SDR-9 X 1.5" HDPE SDR-9 Reducer 1 EA $ -

31 8.33 36" HDPE SDR-11 90° Elbows - Fabricated, 3-Segment 1 EA $ -

34 8.34 36" HDPE SDR-11 22.5° Elbows - Fabricated 2-Segment 11 EA $ -

42 8.35 36" X 30" HDPE SDR-11 Reducer 1 EA $ -

69 8.36 30" HDPE SDR-11 Fabricated Cross 1 EA $ -

14 8.37 36" X 22" HDPE SDR-11 Reducer 2 EA $ -

10 8.38 30" X 20" HDPE SDR-11 Reducing Tee, per Detail 5 - Sheet 17 1 EA $ -

29 8.39 30" HDPE SDR-11 Custom Elbows 1 EA $ -

9 8.40 30" X 6" HDPE SDR-11 Reducing Tees - Fabricated, per Detail 4 - Sheet 18 3 EA $ -

34 8.41 30" HDPE SDR-11 22.5° Elbows - Fabricated 2-Segment 10 EA $ -

15 8.42 24" HDPE SDR-11 X 18" HDPE SDR-11 Reducer, per Detail 2 - Sheet 19 1 EA $ -

15 8.43 18" HDPE SDR-11 X 16" HDPE SDR-11 Reducer, per Detail 2 - Sheet 19 1 EA $ -

34 8.44 24" HDPE SDR-11 22.5° Elbow - Fabricated 2-Segment 6 EA $ -

25 8.45 36" HDPE SDR-11 Custom Bend 2 EA $ -

2 8.46 Salvage of 22" and 20" HDPE SDR-17 Header Piping, Valving, Fittings, and Ancillary Items (Lengths of 20-ft (580 LF Total))

1 LS $ -

3 8.47 Potholing or Trenching to Locate Existing Infrastructure for Tie-Ins (3 Locations)

[DELETABLE]

1 LS $ -

51, 13 (D3Sh17) 8.48 2" SDR-11 X 4" SDR-17 HDPE Dual Containment Wye For Condensate Forcemain 25 EA $ -

- 8.49 2" HDPE SDR-9 90° Elbow 22 EA $ -

- 8.50 2" X 4" Dual Contained End Centralizer for Dual Contained Forcemain 734 EA $ -

- 8.51 36" HDPE SDR-11 Caps 2 EA $ -

- 8.52 30" HDPE SDR-11 Caps 13 EA $ -

- 8.53 24" HDPE SDR-11 Caps 2 EA $ -

- 8.54 2" SDR-11 X 4" SDR-17 Dual Containment End Termination Fitting 14 EA $ -

- 8.55 2" SDR-11 X 4" SDR-17 HDPE Dual Containment 90-Degree Elbow 22 EA $ -

- 8.56 2" HDPE SDR-9 Caps 14 EA $ -

15 (DS2Sh19) 8.57 16" Butterfly Valve and Extension, per Detail 2 - Sheet 19 1 EA $ -

9. FACILITY IMPROVEMENTS (RESERVED)

10. DRAINAGE CONTROL SYSTEM (RESERVED)

11. PAVING

5, 6, 23, 58 11.1 18" Class 2 Aggregate Base with 12 oz/sy Non-Woven Geotextile for Gravel Operations Roads, per Detail Detail 1 – Sheet 17, 1 - Sheet 18, and 1 - Sheet 21

19,280 SF $ -

26, 62, 63 11.2 8" Asphalt Concrete over 18" Class 2 Aggregate Base with 12 oz/sy Non-Woven Geotextile for Asphalt Roads, per Details 2 and 4 - Sheet 21

3,480 SF $ -

52 11.3 Slurry Embedment Between Proposed Header and Other Existing Infrastructure as Prescribed on the Site Plan and Profiles

1 LS $ -

26, 62, 63 11.4 Sawcut and Remove Existing Pavement Per Detail 5 - Sheet 16, Details 2 and 4 - Sheet 21 720 LF $ -

26,62, 63 11.5 Pavement Overlay Per Detail 5 - Sheet 16, Details 2 and 4 - Sheet 21 2,880 SF $ -

12. HABITAT MITIGATION (RESERVED)

13. IRRIGATION AND LANDSCAPING (RESERVED)

14. STORM-WATER PROTECTION/EROSION CONTROL (RESERVED)

15. CONSTRUCTION SURVEY (RESERVED)

16. CONTRACTION/QA/QC (RESERVED)

ALLOWANCES

A1 Diesel and Resin Price Adjustment [DELETABLE] 1 LS $ -

SUPPLEMENTAL WORK

S1 Supplemental Work [DELETABLE] 1 LS $ -

CLOSEOUT

Construction Note(s)

Item No. Description of Work Qty Unit Unit Cost Total Cost

Bidders are reminded that the last page of this Bid must be signed.

TOTAL PRICE -$

ADDITIVE BID ALTERNATES

Notes: Abbreviations:

(ADD) Additive Bid Item CF = Cubic Foot LS = Lump Sum (DED) Deductive Bid Item CY = Cubic Yard MO = Month (DEL) Deletable Bid Item EA = Each TON = Ton (2,000 lbs)

(NA) Non-Adjustable Bid Item GAL = Gallon SF = Square Foot

(S) Specialty Bid Item LB = Pound SY = Square Yard

LF = Linear Foot T&M = Time & Materials

SURYA.DENNISYOUNG

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