B09_Amend_0001_1_GOGA_336173_Preproposal_Presentation_0001.pdf
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- Attached to
- GOGA 336173 - Repair Conzelman Road
- Solicitation number
- 140P2026R0106
About this file
This document is a pre-proposal conference presentation for a federal construction contract to repair Conzelman Road at Golden Gate National Recreation Area in Marin County, California.
The National Park Service (NPS) is soliciting proposals for stabilization work on a short segment of park roadway threatened by coastal bluff erosion. The solicitation number is 140P2026R0106, with the pre-proposal conference held on October 6, 2026. The general scope of work includes constructing a new retaining wall supported by cast-in-place drilled concrete piles to mitigate erosion, providing a new grade beam on top of the retaining wall to support steel bridge rail, and installing new guard rails and replacing the road to match existing conditions. Funding is expected to be available with high expectations for contract award. Work hours are restricted to 8:00 AM to 5:00 PM Monday through Friday, with weekend and holiday work permitted upon Contracting Officer approval. The road will be closed to public traffic during construction, though contractors may use the closed one-lane roadway for two-way equipment access. Work camps are prohibited in the park; however, portable generators are allowed as there is no electrical power on site. Water is available at an NPS hydrant less than one mile away. The staging area is shown on project plans with an additional staging area available as needed. Prospective offerors must submit written questions by October 13, 2026, at 2:00 PM MDT to Contracting Officer Shellie Murphy and Dane Cooper at Shellie_Murphy@ios.gov.gov. All questions and answers will be distributed to prospective offerors by solicitation amendment along with a recording of the pre-proposal conference.
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Text version
NPS ● 2025
Golden Gate National Recreation Area Repair Conzelman Road
GOGA 336173
Solicitation Number: 140P2026R0106 October 6th, 2026
THIS MEETING WILL BE RECORDED
N P S
AGENDA
• INTRODUCTIONS
• Contracting Officer: Shellie Murphy
• Project Manager: Justin DeSantis
• ATTENDEES - LIST WILL BE INCLUDED IN AN
AMENDMENT
• PURPOSE OF THE PRE-PROPOSAL
CONFERENCE/VIRTUAL SITE VISIT
• BRIEF OVERVIEW OF PROJECT
• SCOPE OF WORK
• SCHEDULE
• QUESTIONS – SUBMITTED TO CO IN WRITING
S
SUMMARY OF SCOPE
• The work of this contract is for the stabilization of a short segment of park roadway that is threatened by coastal bluff erosion at Golden Gate National Recreation Area, Marin County, California.
• Funding – high expectations that funds will be available, and contract will be awarded.
• General Scope of work includes:
• New retaining wall to mitigate erosion supported by cast-in-place drilled concrete piles.
• Provide a new grade beam on top of retaining wall to support steel bridge rail.
• Provide new guard rails and replace road to match existing.
S
PROJECT
LOCATION
S
WORK RESTRICTIONS
• Work Hours: 8:00 am to 5:00 pm, Monday – Friday.
• Weekend, holiday and early morning work may be permitted upon request and approval by the CO.
• Traffic Control: the road will be closed to the public during construction.
• Contractor may use the closed roadway, which is one-lane westbound, for two-way use by equipment and vehicles. Beware of cyclists and pedestrians that may ignore road closure signs.
• Work camps are not allowed in the park.
• There is no electrical power available at the site. Portable generators are allowed.
• There is no water at the site, but water is available at a NPS hydrant less than a mile away.
S
WORK RESTRICTIONS
• Staging area is shown on the plans. An additional staging area may be used as shown below.
S
IN PERSON SITE VISITS
• In person site visits are permitted.
• There are no park entrance fees.
• Parking: shoulder parking at the project site can accommodate 2 vehicles. Additional parking is available at a trailhead just 500’ west of the project site.
• Please wear reflective high visibility safety vests while inspecting.
S
TRANSITION TO PLAN REVIEW
Presenter Notes Presentation Notes Original guardrail still in place (moved road over). Intent to remove original guardrail entirely and remove social trail between guardrails, and decompact so that area will revegetate. Align bridge rail with existing guardrail (part of it remains). Replace damaged guardrail end section.
S
QUESTIONS AFTER PRE-PROPOSAL CONFERENCE
• Direct all questions to Shellie Murphy and Dane Cooper by email at Shellie_Murphy@ios.gov.gov
• All questions and answers will be provided to all prospective offerors by amendment to the solicitation along with the recording of the pre-proposal conference.
• Request for proposals (solicitation document) shall only be changed by formal amendment issued by the contracting office on sam.gov
• Cut off day for questions is 13 October 2026, at 2:00 PM MDT mailto:Shellie_Murphy@ios.gov.gov
NPS ● 2025
Thank you
| Golden Gate National Recreation Area Repair Conzelman Road�GOGA 336173 |
| AGENDA |
| SUMMARY OF SCOPE |
| PROJECT LOCATION |
| WORK RESTRICTIONS |
| WORK RESTRICTIONS |
| IN PERSON SITE VISITS |
| TRANSITION TO PLAN REVIEW |
| QUESTIONS AFTER PRE-PROPOSAL CONFERENCE |
| 10 |
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