Att_15_Questions___Answers_140P8626R0002_REVISED_6_July_2026_0004.pdf
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- Attached to
- REPLACE ROOFS AND VENTS FORT CRONKHITE, GOGA
- Solicitation number
- 140P8626R0002
About this file
This is a Questions and Answers document for federal roofing contract RFP 140P8626R0002, "Replace Roofs and Vents Fort Cronkhite, GOGA," issued by the National Park Service Contracting Operations - West for the Golden Gate National Recreation Area.
The Q&A clarifies scope requirements for roof and vent replacement work at Fort Cronkhite. Key determinations include: drone activities are prohibited (GGNRA is a No Drone Zone); large vents lack available drawings and contractors must estimate based on existing conditions; gutters are not included in the base contract except for approximately 10 feet of missing gutters on Building 937, which will be replaced; vents have no motors; flashing must be copper; and deteriorated boards will not be covered unless discovered during tear-off, requiring a contract modification via the Contracting Officer. Building 941 has copper gutters while Building 937 has unverified metal gutters; contractors may bid non-copper gutter guards for Building 937 with field verification before procurement. No gutter replacement is required for Building 106. Hazardous materials testing and removal are not included in the base bid, but any suspect materials (lead or asbestos) discovered require contract modification. Contractor should not disturb paint during roof replacements. Star links may be present on buildings and can be removed by NPS. Three-tab asphalt shingles must be Owens Corning brand; approved equivalents are not acceptable. All available NPS drawings have been included in the solicitation.
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Text version
United States Department of the Interior
NATIONAL PARK SERVICE
CONTRACTING OPERATIONS - WEST
1849 C Street
NW Washington, DC 20240
140P8626R0002
Replace Roofs and Vents Fort Cronkhite, GOGA
Attachment 15 Question & Answers
Question 1:
Will drone activities be acceptable on the property? We use them for roof inspections.
Answer 1:
No. GGNRA is a No Drone Zone - Golden Gate National Recreation Area (U.S. National Park
Service)
Question 2:
Do you have drawings for the large vents?
Answer 2:
No, please estimate based on the existing, the awarded contractor will be able to take one of the existing vents after award if needed for design.
Question 3:
Are gutters included in the base contract (not the option)?
Answer 3:
No, if there are gutters, please remove and reinstall existing.
Question 4:
Do the vents have motors?
Answer 4:
No.
Question 5:
Does the flashing need to be copper?
Answer 5:
Yes.
Question 6:
Are deteriorated boards on or around the roof included in the scope?
Answer 6:
No, there is no way to know if any damage exists until tear off. In the case of additional work needed the CO will evaluate.
Question 7:
Is the replacement of the missing ~10ft of gutters on 937 included in the scope?
Answer 7:
Yes, the specs will be updated to reflect this.
https://www.nps.gov/goga/learn/news/no-drone-zone.htm https://www.nps.gov/goga/learn/news/no-drone-zone.htm
RFP 140P8626R00003 Conlon Creek Culvert Removal & Restoration
Attachment 15 Questions & Answers REVISED 6 July 2026 Golden Gate National Recreation Area
Question 8:
What material are the gutter guards made of?
Answer 8: S
See specification SECTION 07 71 23 – MANUFACTURED GUTTERS
Question 9:
Are there any machinist plans for the larger vent style? And can they be published?
Answer 9:
See question 2 above.
Question 10:
Section 07 71 23 requires the gutter guard material and fasteners to match the existing gutter metal but does not identify the existing gutter material. Please confirm the existing gutter material for Buildings 937 and 941 and the required material for the new surface tension gutter guard system.
Answer 10:
Building 941 has copper gutters, and Building 937 has metal gutters different than copper but the metal is not verified. The contractor can bid for non-copper gutter guards for that building and field verify before procurement.
Question 11:
Please provide any available architectural, structural, roof, or as-built drawings for all buildings included in this project to assist bidders in verifying existing conditions and accurately pricing the work.
Answer 11:
All the drawings NPS has have been included in the solicitation.
Question 12:
Please confirm whether all existing electrical wiring, conduit, and roof-mounted electrical components will be de-energized and disconnected by the Government prior to construction, or if this work is to be included in the Contractor's scope.
Answer 12:
There may be star links on the budlings. NPS can take it down, but there shouldn't be any roof mounted electrical that needs to be de-energized.
Question 13:
Please confirm that hazardous materials testing, hazardous materials abatement, and associated disposal (including asbestos-containing roofing materials) are not included in the base bid. If hazardous materials are encountered, please confirm they will be addressed by the Government or by contract modification.
Answer 13:
Hazmat testing and removal is not included. NPS parkwide asbestos survey did not indicate asbestos in the roofing materials. If suspect material is found by the contractor (lead or asbestos), that would mean a contract modification. Contractor should not be disturbing paint during roof replacements.
Question 14:
Please confirm that no gutter replacement required for Building 106.
RFP 140P8626R00003 Conlon Creek Culvert Removal & Restoration
Attachment 15 Questions & Answers REVISED 6 July 2026 Golden Gate National Recreation Area
Answer 14:
Confirmed.
Question 15:
Three-tab asphalt shingles have become increasingly difficult to obtain. Owens Corning no longer manufactures three-tab shingles. Will the Government accept an approved equivalent asphalt shingle as a substitute for bidding purposes?
Answer 15:
No, Owens Corning is required and is able to be sourced.
File details come from the government source that posted it. Updated .