Conlon Creek Culvert Removal & Restoration, GOGA
Overview
Buyer
Place of Performance
NAICS
PSC
Set Aside
Original Source
Timeline
Qualification Details
Fit reasons
- NAICS alignment with historical contract wins in similar service areas.
- Scope strongly matches core technical capabilities and delivery model.
Risks
- Past performance thresholds may require one additional teaming partner.
- Potential clarification needed on staffing minimums before bid/no-bid.
Next steps
Validate eligibility requirements, assign capture owner, and schedule partner outreach to confirm teaming strategy before submission planning.
Quick Summary
The National Park Service (NPS), Department of the Interior, is soliciting proposals for the Conlon Creek Culvert Removal & Restoration project at the Golden Gate National Recreation Area (GOGA) in Marin County, California. This Total Small Business Set-Aside opportunity seeks a firm-fixed-price contract to stabilize the Conlon Creek channel and its tributary, repairing damage from a 2015 culvert blowout. The estimated value is between $500,000 and $700,000. Proposals are due June 22, 2026.
Scope of Work
The project involves comprehensive stream stabilization efforts within Muir Woods National Monument. Key tasks include:
- Removal of an 80-foot buried and rusted corrugated metal culvert.
- Stabilization of the culvert failure footprint with an engineered rock ramp.
- Construction of three rock step pools to enhance aquatic habitat.
- Stabilization and filling of an adjacent 75-foot gully to reduce sediment contribution.
- Utilization of existing bank and bed materials, supplemented by purchased rock slope protection.
- Installation of water diversion and dewatering systems, site preparation, channel grading, and permanent erosion control measures.
- All in-channel work must be completed between June 15 and October 15, 2026. Environmental protection is critical due to the project's location in a protected old-growth redwood forest. Davis-Bacon Wage Rates apply.
Contract Details
- Contract Type: Firm-Fixed-Price.
- Period of Performance: 365 calendar days after Notice to Proceed.
- Estimated Value: $500,000 - $700,000.
- Set-Aside: Total Small Business Set-Aside.
- NAICS Code: 237990 (Other Heavy and Civil Engineering Construction), with a $45 million size standard.
Submission & Evaluation
Proposals must be submitted via email by June 22, 2026, local time. Questions are due seven calendar days prior to the proposal deadline. A site visit is scheduled for Monday, June 15, 2026, from 1:00 PM – 3:00 PM PDT at the Muir Woods Sewer Lift Station Dirt Lot; RSVP is required.
Evaluation will follow a Best Value Continuum Tradeoff Process, considering both technical factors and price. Key evaluation criteria include Technical Approach, Schedule, Project Experience, Key Personnel Experience, California Contractor State License, and Past Performance. Offerors must complete and submit various forms, including Project Experience, Key Personnel Experience, Past Performance Questionnaire (due June 17, 2026), General References, and a Bid Bond (SF 24). Compliance with SAM registration, FAR 52.209-13, and FAR 52.222-38 is mandatory.
Contact Information
For questions, contact Contract Specialist Quinn Rankin at Quinn_Rankin@ios.doi.gov.