Solicitation
GOGA 336173 - Repair Conzelman Road
Department of the Interior · National Park Service · Sol. 140P2026R0106
Due in 20 days
AI summary Beta
Some details weren't available to this summary, so it may miss requirements. Check the attachments on SAM.gov.
The National Park Service (Denver Service Center) wants a contractor to stabilize a short stretch of Conzelman Road in Golden Gate National Recreation Area, Marin County, California, where a coastal bluff is eroding under the road. The work is a 51-foot concrete retaining wall on drilled piles, a steel bridge rail and guardrail, and about 80 feet of road repair, as one lump-sum job with a 180-day performance period. It is a HUBZone set-aside with an estimated price of $1 million to $5 million, and proposals are due 29 Oct 2026.
Watch out for
- Funding is not confirmed. The solicitation says the job is unfunded and will be awarded only if funds arrive, while the conference said funds are available, so you could spend bid money on a job that is never awarded.
This is currently an unfunded requirement with a high expectation that funds will be available.
- Drilling rock risk is on the contractor. The geotechnical report shows very hard weathered sandstone, shale and chert, but the price is lump sum with no rock definitions or separate pay, so the pile drilling cost is yours if conditions are bad.
All shaft drilling to the required tip elevation, whatever material is encountered, is
- Due time zone is unclear. The Q&A says 2:00 PM Pacific while SAM.gov and the SF 1442 point to Mountain time, a one hour difference that could make an offer late.
Proposals are due October 29, 2026, at 2:00 PM Pacific Time.
- Bid bond and likely performance and payment bonds. You need a bid bond with the proposal and probably full bonds after award, which can be hard for a small HUBZone firm to get on a $1 million to $5 million job.
Submit Standard Form 24, Bid Bond duly executed between the Offeror and the bonding
- Messy and conflicting bid documents. The Government admits the drawings are weak, and the Q&A had to fix conflicts on pile length, wall location, rebar coating, fly ash, drainage, bridge rail, paving and line item number, so read every amendment closely before pricing.
So not the cleanest set of drawings, but that was all we could get.
- Hard site logistics. Access is through a one-lane signal-controlled tunnel, the road is a busy cycling route, there is no power or water on site, no work camps are allowed, work hours are 8 to 5 on weekdays, and you must provide your own closure and detour signing.
Work camps are not allowed in the park.
- Set-aside shown differently in SAM.gov. SAM.gov lists no set-aside, but the solicitation and Q&A say HUBZone, so only HUBZone-certified firms should bid and subcontracting limits apply.
This acquisition is being conducted via the Small Business Administration
- Key documents not fully available. The specifications, drawings, geotechnical report, wage determination and parts of Sections B, F, H and L were not in the text provided, so price, bond, wage and submission details are unconfirmed.
- Past performance depends on your references. References must complete the questionnaire and send it back to the contracting officer, so a slow reference could hurt your score.
Reference to complete Sections C and D and transmit back to Contracting Officer listed in section E.
Read from the notice and 12 attachments. 6 not read in full.
- Sol_140P2026R0106_Amd_0001.pdf
- Sol_140P2026R0106.pdf
- B08_Attach_3_Midwest_Guardrail_Specifications.pdf
- B09_Amend_0001_1_GOGA_336173_Preproposal_Presentation_0001.pdf
- B09_Amend_0001__2_Pre-Proposal_Conference_Transcripts_0001.pdf
- B09_Amend_0001_3_PreProposal_AttendanceList_0001.pdf
- B09_Amend_0001_4_Q_and_As_0001.pdf
- B09_Amend_0001_5_Caltrans_2025_Railings_and_Barriers_StdSpecs_0001.pdf
- B08_Attach_5_20230629-UG-CaliforniaST-75BridgeRail.pdf
- B08_Attach_8_Project_Experience.docx
- B08_Attach_11_Limitation_on_Sub.pdf
- B08_Attach_9_PastPerf_Vol_I.docx
- B08_Attach_10_Gen_Refs_Vol_II.pdf: over the file limit for one brief
- B08_Attach_2_GOGA_Conzelman_Road_Wall_-_Division_2_Through_49_Specifications_-_Final_CD_Submittal.pdf: over the file limit for one brief
- B08_Attach_7_WD_CA20260007_2_Sept_26.pdf: over the file limit for one brief
- B08_Attach_1_GOGA_Conzelman_Road_Wall_-_Division_1_Specs_-_Final_CD_Submittal.pdf: over the file limit for one brief
- B08_Attach_4_Drawings_GOGA_Conzelman_Road_Wall_-_Final_CD.pdf: over the file limit for one brief
- B08_Attach_6_R1255074-Conzelman_Road_DD_Geotech_Report_-_signed.pdf: over the file limit for one brief
Full brief
What they want
- Build a new cast-in-place concrete retaining wall, 51 feet long, on six 30-inch cast-in-place drilled concrete piles (minimum 28 feet total length each), with a concrete grade beam on top
- Install a 51-foot galvanized California ST-75 steel bridge rail with bicycle railing on the grade beam (no end blocks)
- Connect the bridge rail to existing guardrail with a thrie beam transition, replace Midwest guardrail in kind, and replace a damaged guardrail end section
- Remove the old left-hand guardrail and rebuild about 80 feet of road to match existing (13 inches of aggregate base, HMA Type A with PG 64-16 binder)
- Wall details: epoxy-coated rebar, Class F fly ash, damp-proofing, drainage composite, 4-inch perforated french drain and weep holes every 8 feet with drain rock and filter fabric
- Close the road at the Hawk Hill roundabout (up to the full 180 days), and provide your own closure and detour signing and traffic control
- Do the contractor's special inspection of concrete and reinforcing; Government supplies the geotechnical and structural engineer observations
- Do minor vegetation clearing and erosion control, timed around the March 1 to July 31 bird nesting season
- Contract type
- Lump-sum construction contract, negotiated best-value RFP (no unit pricing for excavation types)
- Period of performance
- 180 calendar days performance period, with the road allowed to be closed for the full period. Start and completion terms (Section H, Special Requirement 1) were not in the text provided.
- Place of performance
- Conzelman Road, Golden Gate National Recreation Area (Marin Headlands), Marin County, California. The SAM.gov place of performance field is blank.
- Estimated value
- Between $1,000,000 and $5,000,000 (estimated price range of construction)
- How they'll choose
- Best value tradeoff. Four non-price factors (Schedule, Project Experience, Key Personnel Experience, Past Performance) are listed in descending order of importance and are together significantly more important than price. Award may go to a higher priced proposal and the Government intends to award without discussions.
- Offers due
- 29 Oct 2026, 2:00 PM Pacific Time per the Amendment 0001 Q&A (answer A16). SAM.gov shows 2026-10-29T14:00:00-06:00 (Mountain time) and the SF 1442 says 1400 local time, so confirm the time zone with the contracting officer.
- How to submit
- Electronic only (one electronic copy, no hard copies). The exact upload or email address is in Section L, which was only partly provided. Contracting Officer is Shellie Murphy, NPS Denver Service Center, Denver CO.
What they'll judge offers on
- Factor 1 - Schedule (critical path, sequencing, risk mitigation, completion within the period; shorter road closure rated more favorably)
- Factor 2 - Project Experience (similar scope and magnitude projects)
- Factor 3 - Key Personnel Experience
- Factor 4 - Past Performance (survey responses, CPARS data)
- Price (fair and reasonable, checked for unbalanced line items; less important than all non-price factors combined)
What to include when you submit
- Volume I (Technical): Schedule, Project Experience, Key Personnel Experience and Past Performance. Submit the Factor 1 schedule as a PDF, not a native Project file
- Past performance: send the questionnaire to each reference, include copies with their contact details in Volume I, and add a narrative of any less than satisfactory past performance
- Project experience: use the Project Experience questionnaire for each referenced project
- Volume II (Business and Price): SF 1442 (blocks 14 through 20C only, signed by an authorized official), acknowledgment of all amendments, Section B price schedule with a separate schedule of values for each line item
- Volume II also needs an SF 24 bid bond or other suitable bid guarantee, Section K representations and certifications, the General References form, and the Subcontracting Percentage Worksheet
- Price the single line item as CLIN 0010 (confirmed in the Q&A)
- Questions were due 13 October 2026, 2:00 PM MDT; answers come out by amendment
- Hold your price for the acceptance period stated on the SF 1442 (the exact number of days was unclear in the text provided)
You must have
- HUBZone-certified small business (set-aside confirmed in Amendment 0001 Q&A; the total small business clause was removed)
This acquisition is a HUBZone set-aside.
- Active SAM.gov registration at the time you submit the offer
Your firm must maintain current, active registration
- Bid guarantee with the offer (SF 24 bid bond or other suitable guarantee)
Submit Standard Form 24, Bid Bond duly executed between the Offeror and the bonding
- Performance and payment bonds are likely required after award (clause 52.228-15 is in the contract; the SF 1442 bond block and amounts were not readable)
52.228-15 PERFORMANCE AND PAYMENT BONDS-CONSTRUCTION (JUN 2020) (DEVIATION MAY
- Relevant experience on similar-scope projects (drilled piles, retaining walls, guardrail or bridge rail, roadway restoration count as relevant) with references
Project experience demonstrating (1) capability to successfully
- Key personnel meeting the contract's key personnel requirement, scored in Factor 3
SPECIAL REQUIREMENT 5: KEY PERSONNEL
- Limitations on subcontracting for a HUBZone prime; the attachment form sets the cap at 85% to non-similarly situated subcontractors for general construction and requires a report on invoices
General construction. 85% maximum may be subcontracted to non-similary situated Subcontractors
- Contractor must arrange and pay for special inspection of concrete and reinforcing
Special inspection of concrete and reinforcing
Not in the notice text
- Exact submission method and address (email or portal) and any page limits; the first part of Section L was not in the text provided
- The Section B price schedule and exact line item details
- Whether performance and payment bonds are required and the amounts (SF 1442 item 12a and clause details not readable)
- Start-after-notice-to-proceed terms and the liquidated damages amount (Sections F and H)
- Which key personnel positions and qualifications are required (Special Requirement 5)
- Davis-Bacon wage rates (a wage determination file was listed but not read)
- Number of past performance and project experience references and how many years back they may go
- Whether funding is actually in place before award
- How long you must hold your price (offer acceptance period on the SF 1442)
- The full specifications, drawings and geotechnical report; the Midwest guardrail specification was unreadable in the text provided
- Which time zone governs the 29 Oct 2026 deadline, and the correct contracting officer email (the documents show two different spellings)
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Key facts
- Response due
- Oct 29, 2026, 8:00 PM UTC
- Posted
- Oct 7, 2026
- Notice type
- Solicitation
- Solicitation
- 140P2026R0106
- Agency
- Department of the Interior · National Park Service
- Office
- DSC Contracting Services Division
- NAICS
- 237310
- Product/service code
- Z1LB
- Business type
- Construction & renovation
- Contracting contact
- Murphy, Shellieshellie_murphy@nps.gov7206102690
- Versions
- 3 (amended since first posted)
Full notice text from SAM.gov
GOGA 336173 - Repair Conzelman Road
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