Z--Conlon Creek Culvert Removal & Restoration, GOGA

MUIR WOODS NATIONAL MONUMENT GOLDEN GATE NATIONAL RECREATION AREA CALIFORNIA CONLON ROAD STREAM STABILIZATION PMIS NO. 253456 TECHNICAL SPECIFICATIONS NATIONAL PARK SERVICE Exp. 3/31/26 1/25/2025 January 2025 Edited by Darren Fong, GOGA Aquatic Ecologist February 8, 2026 and June 11, 2026. Additions highlighted in orange and deletions in orange strikethrough -- 1 of 163 -- -- 2 of 163 -- Conlon Road Stream Stabilization PMIS 253456 TOC - 1 TABLE OF CONTENTS TABLE OF CONTENTS Technical Specifications Muir Woods National Monument, Golden Gate Natural Recreation Area, California Conlon Road Stream Stabilization PMIS 253456 01 11 00 Summary of Work 1-6 01 27 00 Definition of Contract Line Items 1-4 01 31 00 Project Management and Coordination 1-10 01 32 16 Construction Schedule 1-10 01 33 23 Submittal Procedures 1-6 01 33 23 List of Submittals 1-6 01 35 23 Safety Requirements 1-6 01 40 00 Quality Requirements 1-10 01 45 00 Environmental Protection 1-19 01 51 00 Temporary Services 1-4 01 54 00 Traffic Controls 1-6 01 57 23 Temporary Storm Water Pollution Prevention Plan (UPPP) 1-8 01 57 23 Template for Under an Acre Pollution Prevention Plan (UPPP) 1-10 01 67 01 Imported Soils and Rock 1-6 01 71 23 Field Engineering and Layout 1-8 01 73 40 Execution 1-4 01 74 19 Construction Waste Management 1-10 01 77 00 Closeout Procedures 1-4 01 89 31 Soil Management 1-2 02 41 13 Selective Demolition 1-4 31 05 16 Rock Work 1-4 31 10 00 Site Clearing 1-2 31 20 00 Earth Moving 1-6 31 23 16 Excavation 1-4 -- 3 of 163 -- Conlon Road Stream Stabilization PMIS 253456 TOC - 2 TABLE OF CONTENTS This page intentionally blank. -- 4 of 163 -- Conlon Road Stream Stabilization PMIS 253456 01 11 00 - 1 SUMMARY OF WORK SECTION 01 11 00 - SUMMARY OF WORK PART 1 - GENERAL 1.0 SUMMARY A. This Section includes the following: 1. Work Covered by the Contract Documents. 2. Actions Integral to the Work: Access and Sequencing. 3. Permissible Work Windows . 4. Work by Others under other contracts. 5. Government Furnished Materials. 6. Contractor use of Premises and Staging Areas. 7. Public use of site. 8. Work Restrictions. 9. Special Construction Requirements. 1.1 WORK COVERED BY CONTRACT DOCUMENTS A. Project Location: Muir Woods National Monument, Marin County, within the Golden Gate National Recreation Area (GGNRA), a unit of the National Park Service (NPS). Muir Woods is a protected old-growth redwood forest. B. Most of the work is within the channel and channel banks of Conlon Creek and its tributary. C. This Project is a composite of one drawing set, Conlon Creek Stream Stabilization, February 2026, and a single set of specifications. D. Site Access: Access to the staging area for the Contractor shall be the entrance to the Conlon Parking Lot. E. The Work occurs in the creek channel and embankments as well as the adjoining tributary channel: 1. Conlon Creek: a. If surface flows present, install water diversion system and maintain dewatered work zone through construction. b. Conduct site preparations including salvaging of native plants, clearing and grubbing c. Remove and dispose of existing culvert now exposed in the creek bed. d. Remove and dispose of three existing rock and concrete headwalls and metal trash rack. e. Remove existing trees and re-use as shown on the Drawings. f. Remove existing rock slope protection (RSP) materials from failed channel crossing and place in tributary channel as directed. g. Grade channel and channel banks as shown on Drawings. Excess bank materials generated shall be placed in tributary channel while native gravels used where Drawings indicate enginereed streambed materials. h. Grade channel bed and toes of banks. i. Install rock weirs and grade control structures as shown on the drawings. j. Install salvaged native plants. k. Install permanent erosion control measures (e.g., erosion control blanket, fiber rolls, and pine duff) after finish grading. -- 5 of 163 -- Conlon Road Stream Stabilization PMIS 253456 01 11 00 - 2 SUMMARY OF WORK 2. Tributary to Conlon Creek: a. Conduct site preparations including salvaging of native plants as directed by CO and clearing and grubbing b. Bury RSP removed from Conlon Creek channel in tributary channel bottom. c. Place and compact soils generated from excavation of Conlon Creek channel in tributary channel to the lines and grades shown in the Drawings. d. Excavate and place Rock Slope Protection materials at the rock control structures shown on the drawings. e. Install permanent erosion control measures (e.g., erosion control blanket, fiber rolls, and pine duff) after finish grading. F. All the items shown in these specifications and drawings will be constructed under a single prime contract. G. Items which are integral to this contract are described below: 1. Access Management and Protections a. The Pump House staging area is accessible to Contractor vehicles and equipment. b. The only road suitable to import equipment on oversized vehicles is via State Hwy 1. Caltrans has restrictions and requirements for oversized vehicles on a segment of this road. Caltrans will likely require a permit and California Highway Patrol escorts for an oversized vehicle, both of which require substantial advance submittals and scheduling. The Contractor shall apply to Caltrans for a permit, if needed, as soon as reasonably possible after contract award to avoid delays in the Work and to enable completion of the work within the permissible work window (Section 01 54 00 Traffic Control). c. A separate temporary water diversion system is required for work within Conlon Creek. Equipment may not enter a channel Work Zone until it is dewatered by the Contractor, with fish removed by NPS (Section 01 45 00 Environmental Protection). 2. Work Window a. The work items in this Contract shall be carefully sequenced and managed by the Contractor to complete the project in the permissible construction window. b. Th…