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Unofficial Notice of Invitation to Bid (NIB)
San Bernardino County is seeking bids from qualified and interested contractors for the following project titled, PHASE 1B LINER CONSTRUCTION PROJECT AT THE LANDERS SANITARY LANDFILL, identified under Solicitation ID: -. Work is to be performed near 59200 Winters Rd, Landers, CA 92285, USA in San Bernardino County.
General Project Description
The project focuses on the Phase 1B Liner Construction at the Landers Sanitary Landfill in San Bernardino County, California, involving an 11-acre cell expansion. The scope includes extensive earthwork such as clearing, grubbing, demolition, excavation, stockpiling, screening, subgrade preparation, veneer fill, and waste removal, including specialized blasting. The core work involves installing a composite liner system (base liner and side slope liner) using various geosynthetics like HDPE geomembrane (40-mil and 60-mil textured), Geosynthetic Clay Liner (GCL), and geotextile. Furthermore, it encompasses the construction of leachate collection and removal systems (LCRS), lysimeter, and landfill gas (LFG) collection systems, which includes installing various HDPE pipes (slotted and solid), drainage gravel, and associated support structures. Miscellaneous civil and drainage improvements such as Portland Cement Concrete (PCC) items, asphalt concrete (AC) pavement, corrugated HDPE pipe culverts, rock slope protection, and traversable dikes are also part of the project. Finally, geomembrane leak location surveys using electrical methods will be performed to verify the integrity of the installed liner system.
General Bid Items
- Quantity: 1 Unit: LS Work Item: Mobilization
- Quantity: 1 Unit: LS Work Item: Construction Support Tasks
- Quantity: 1 Unit: LS Work Item: Storm Water Pollution Control Compliance Work
- Quantity: 1 Unit: LS Work Item: Project Survey
- Quantity: 14.3 Unit: AC Work Item: Clearing, Grubbing, Demolition, and Removals
- Quantity: 405000 Unit: CY Work Item: Unclassified Excavation / Transport Oversize to Southeast Rock Stockpile
- Quantity: 80000 Unit: CY Work Item: Rock Stockpile Excavation / Transport to Southeast Rock Stockpile
- Quantity: 50000 Unit: CY Work Item: Unclassified Excavation / Transport to Northwest Stockpile
- Quantity: 20000 Unit: CY Work Item: Unclassified Excavation to Fill (3-inch Minus)
- Quantity: 55000 Unit: CY Work Item: Unclassified Excavation / Transport to Screening Location
- Quantity: 145000 Unit: SF Work Item: Subgrade Slope Veneer Fill
- Quantity: 285000 Unit: SF Work Item: Compacted/Screened 1-Inch Minus Material on Floor
- Quantity: 2000 Unit: CY Work Item: Waste Removal/Transport to Working Face
- Quantity: 5000 Unit: CY Work Item: Alluvium/Unsuitable Material Removal (per Geotechnical Engineer)
- Quantity: 290000 Unit: SF Work Item: Subgrade Surface Preparation - Floor
- Quantity: 215000 Unit: SF Work Item: Subgrade Surface Preparation - Slope and Benches
- Quantity: 285000 Unit: SF Work Item: Geosynthetic Clay Liner (GCL) on Floor
- Quantity: 285000 Unit: SF Work Item: 40-mil Encapsulation Geomembrane (Textured Both Sides) on Floor
- Quantity: 285000 Unit: SF Work Item: 60-mil Geomembrane (Textured Both Sides) on Floor
- Quantity: 1100 Unit: LF Work Item: Slope to Base Liner / Encapsulation Liner Transition (Per Detail 3/D1)
- Quantity: 3500 Unit: SF Work Item: Geocomposite Lysimeter Drain (Per Details 1/D2, 1/D4, 2/D4, 3/D4)
NAICS Classification
237990 – Other Heavy and Civil Engineering Construction, 562212 – Solid Waste Landfill, 237110 – Water and Sewer Line and Related Structures Construction, 238990 – All Other Specialty Trade Contractors
Records and Due Date
This bid opportunity was entered into BidAmerica on December 11, 2025, and was last updated on February 4, 2026. All bids and/or proposals are due on February 5, 2026.
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Legal Disclaimer
All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by San Bernardino County. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from San Bernardino County prior to bidding.