Z--REPLACE ROOFS AND VENTS FORT CRONKHITE, GOGA 140P8626R0002

REPLACE ROOFS AND VENTS FORT CRONKHITE, GOGA This Amendment 0003 is issued to effect the following changes: 1. Disregard Attachment 3 Drawings 140P8626R0003 as this was inadvertently included in the attachments and not a part of this project (there is no replacement Attachment 3). Refer to Attachment 4 Drawings Flue for this project. 2. All other terms and conditions remain unchanged. This Amendment 0002 is issued to effect the following changes: 1. Include Attachment 15 Questions & Answers 24 June 2026. 2. Include the Site Visit Sign-In Sheet 24 June 2026 3. All other terms and conditions remain unchanged. This Amendment 0001 is issued to effect the following changes: 1. The site visit, originally scheduled for Wednesday, June 24, 2026, at 10:00 AM PDT, will now be held on the same date at 11:00 AM PDT. 2. All other terms and conditions remain unchanged. The Department of the Interior, National Park Service, Golden Gate National Recreation Area, has a requirement to replace roofs and vents at Fort Cronkite and Gutter Guards at Fort Barry. The work of this contract consists of supervision, labor, equipment, testing, and supplies required for the removal and replacement of roofs on four buildings, vents on ten roofs, options for vents on three buildings at Fort Cronkhite, and options for gutter guards on two buildings at Fort Barry.

REPLACE ROOFS AND VENTS FORT CRONKHITE, GOGA This Amendment 0004 is issued to effect the following changes: 1. Revise Attachment 15 to include updated Questions & Answers. 2. All other terms and conditions remain unchanged. This Amendment 0003 is issued to effect the following changes: 1. Disregard Attachment 3 Drawings 140P8626R0003 as this was inadvertently included in the attachments and not a part of this project (there is no replacement Attachment 3). Refer to Attachment 4 Drawings Flue for this project. 2. All other terms and conditions remain unchanged. This Amendment 0002 is issued to effect the following changes: 1. Include Attachment 15 Questions & Answers 24 June 2026. 2. Include the Site Visit Sign-In Sheet 24 June 2026 3. All other terms and conditions remain unchanged. This Amendment 0001 is issued to effect the following changes: 1. The site visit, originally scheduled for Wednesday, June 24, 2026, at 10:00 AM PDT, will now be held on the same date at 11:00 AM PDT. 2. All other terms and conditions remain unchanged. The Department of the Interior, National Park Service, Golden Gate National Recreation Area, has a requirement to replace roofs and vents at Fort Cronkite and Gutter Guards at Fort Barry. The work of this contract consists of supervision, labor, equipment, testing, and supplies required for the removal and replacement of roofs on four buildings, vents on ten roofs, options for vents on three buildings at Fort Cronkhite, and options for gutter guards on two buildings at Fort Barry.

REPLACE ROOFS AND VENTS FORT CRONKHITE, GOGA This Amendment 0005 is issued to effect the following changes: 1. Include FAR 52.223-2 - Reporting of Biobased Products Under Service and Construction Contracts (MAY 2024) (DEVIATION MAY 2026). 2. All other terms and conditions remain unchanged. This Amendment 0004 is issued to effect the following changes: 1. Revise Attachment 15 to include updated Questions & Answers. 2. All other terms and conditions remain unchanged. This Amendment 0003 is issued to effect the following changes: 1. Disregard Attachment 3 Drawings 140P8626R0003 as this was inadvertently included in the attachments and not a part of this project (there is no replacement Attachment 3). Refer to Attachment 4 Drawings Flue for this project. 2. All other terms and conditions remain unchanged. This Amendment 0002 is issued to effect the following changes: 1. Include Attachment 15 Questions & Answers 24 June 2026. 2. Include the Site Visit Sign-In Sheet 24 June 2026 3. All other terms and conditions remain unchanged. This Amendment 0001 is issued to effect the following changes: 1. The site visit, originally scheduled for Wednesday, June 24, 2026, at 10:00 AM PDT, will now be held on the same date at 11:00 AM PDT. 2. All other terms and conditions remain unchanged. The Department of the Interior, National Park Service, Golden Gate National Recreation Area, has a requirement to replace roofs and vents at Fort Cronkite and Gutter Guards at Fort Barry. The work of this contract consists of supervision, labor, equipment, testing, and supplies required for the removal and replacement of roofs on four buildings, vents on ten roofs, options for vents on three buildings at Fort Cronkhite, and options for gutter guards on two buildings at Fort Barry.