Section_J_-_Att_No__002_SOW.pdf

GOLDEN GATE NATIONAL RECREATION

AREA SAUSALITO, CALIFORNIA

Deep Clean Barry-Baker Tunnel

Golden Gate National Recreation Area

PMIS #311768

STATEMENT OF WORK

National Park

Service Pacific West

Region

RFQ 140P8623Q0043

Section J - Att No. 002

Statement of Work page 1 of 10

STATEMENT OF WORK

1.1 WORK COVERED BY CONTRACT DOCUMENTS

A. Project Location: The project location is in Golden Gate National Recreation Area – Marin County, Marin

Headlands - Bunker Road:

1. Bunker Road, Sausalito, CA West End of Tunnel: 37.838996, -122.485810

2. Bunker Road, Sausalito, CA East End of Tunnel: 37.841959, -122.493467

B. The Work consists of the following, also See Attachment 003_Drawings_Maps_Figures for further description and clarifications:

1. Pressure wash the walls and ceiling of the Barry-Baker Tunnel (~43,000 sq. ft.) using hot water in the range between 180-200 degrees Fahrenheit, staying approximately two feet away on both sides of the lights and electrical conduit running the length of the tunnel. The lights could be damaged if directly sprayed. No cleaning agents or solvents are to be used to deep clean the tunnel walls.

a. Scraping or wire brush implements (or similar) may be necessary to remove areas of heavy mineral deposits around weep holes and seepage areas.

2. Inspect weep holes and wire mesh for clogging, clean weep holes and wire mesh as necessary by removing mineral build-up and debris to allow free seepage flow. Weep holes and wire mesh are to be cleaned and rinsed. Wire mesh if dislodged needs to be reinserted to the back of the weep hole.

Estimated number of weep holes is ~ 130. Weep holes are 3” in diameter and vary in depth.

a. Replacement of wire mesh may be necessary for up to 20% of the weep holes due to excessive mineral build-up. Wire mesh is 17-gauge galvanized wire screen with wire mesh openings no larger than ½”. Wire screen shall be shaped to fit the 3” diameter weep hole so that there are no gaps between the screen and inner diameter of the weep hole so that the screen is snuggly seated at the back of the weep hole. See Attachment 003_Drawings_Maps_Figures.

3. Gutters are to be pressure washed and cleaned free of debris.

4. Implement traffic control measures that detour vehicles from traveling through Bunker Road Barry

Baker Tunnel and direct them to Conzelman Road for travel in and out of the Marin Headlands. See

Section 1.10 – Public Traffic Management.

1.2 CONTRACTOR USE OF SITE

A. The Contractor’s use of the premises is restricted to the designated work area. Materials and equipment must be stored inside the work area. Contractor is responsible to secure all equipment and material.

B. Temporary facilities include: portable toilets rented by the contractor and cleaned on an as-needed basis by the contractor.

C. Staging Area: Confine storage of materials and equipment to the pre-approved staging area. The pre-approved staging area is the parking area immediately adjacent to the East Entrance Barry Baker Tunnel

(37.839146, -122.4854962. See Attachment 003_Drawings,_Maps_Figures.

D. Protection of Historic Features: The Golden Gate National Recreation Area contains many project locations which are highly sensitive sites and may contain historical resources. The Contractor shall closely follow

Statement of Work page 2 of 10 the plans shown and alert the Contracting Officer immediately of any major deviations. Confine all operations to work limits of the project. Prevent damage to historic features that lie within the work limits, including but not limited to historic buildings and features, archeological resources including features both above and below grade, cultural landscapes and features including plantings, utilities, walkways, etc.

Protect historic features from damage due to the work of this contract. Application of spray paint or any permanent markings to site features is prohibited. (Only chalk-based paint or crayon should be used).

E. Preservation of Natural Features:

1. Prevent damage to natural surroundings. Restore damaged areas as directed and approved by the

Contracting Officer, at no additional expense to the Government.

2. Provide temporary barriers to protect existing trees and plants and root zones.

3. Do not remove, injure, or destroy trees or other plants without prior approval. Remove agreed upon roots and branches that interfere with service work.

4. Do not fasten ropes, cables, or guys to existing trees.

5. Carefully supervise excavating, grading, filling, and other service work operations near trees to prevent damage.

6. Take measures to prevent equipment from compacting soils adjacent to or within the service work zone that will not be displaced by a constructed facility such as the parking lot.

7. All geologic and fossil materials within the park are protected. Avoid disturbing soils or rock within or outside the project are, except as specified in the contract documents.

F. Driveways and Entrances: Keep driveways and entrances serving premises clear and available to

Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

1. Schedule deliveries to minimize use of driveways and entrances.

2. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

G. Work Camp: Establishment of a camp within the park will not be permitted.

H. Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park roads may be obtained from the Office of the Park Superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment.

I. Contractor shall provide OSHA and other required postings regard safety at the site.

J. All Contractor employees and subcontractor employees shall be advised of the rules and regulations of the

National Park Service.

K. Contractor and subcontractor vehicles not required on the worksite itself shall be parked in a location to be reviewed and approved by Contracting Officer.

Statement of Work page 3 of 10

L. Utilities to support service work activities by contractor:

1. Water: Water for high pressure washing will be provided by NPS.

1.3 PUBLIC USE OF SITE

A. Contractor shall conduct tunnel cleaning operations while road is closed to the public. Bunker Road Barry

Baker Tunnel closure is permitted from the West Entry of Tunnel (~37.838996, -122.485810) to the East

Entry of Tunnel (~37.841959, -122.493467). Closure will be permitted for a maximum of 10 hours during the nighttime hours between 10pm to 6am for five (5) consecutive calendar days starting on a Sunday night at 10pm. See Section 1.10 - Public Traffic Management.

B. Emergency Vehicle Access: Contractor must always maintain access for emergency vehicles along

Conzelman Road. Contractor will stop all traffic and/or control and direct traffic flow to accommodate the immediate safe and efficient passage of emergency vehicles.

1.4 CONDUCT OF OPERATIONS

A. Contractor personnel shall comply with all Federal and State law and regulations, including the Golden

Gate National Recreation Area Superintendent’s Compendium. Any exception must be specifically justified and approved in writing by the Contracting Officer.

1. The Superintendent’s Compendium can be found at this internet address:

https://www.nps.gov/goga/learn/management/lawsandpolicies.htm

B. No signs or advertisements (except those specified herein) shall be displayed on the service work site or within the park unless approved by the Contracting Officer.

1.5 WORK RESTRICTIONS

A. On Site Workdays and Hours:

1. Workdays

a. Work inside the Barry-Baker Tunnel will be done during the weekday starting on a Sunday 10pm and ending Friday 6am. Work within the tunnel beyond these days will be permitted by prior authorization of the Contracting Officer. Submit requests 48 hours in advance of the work to the

Contracting Officer for approval.

2. Work Hours

a. Barry Baker Tunnel. Work within the Barry-Baker Tunnel will be between the hours of 10pm and

6am, no exceptions. Public traffic shall be allowed use of tunnel up until 10pm and after 6am.

Contractor may access staging areas at any time of day but must not impede traffic outside 10pm-

6am hours.

b. Conzelman Road. Traffic will be detoured to McCullough Road and Conzelman Road from the hours of 10pm to 6am. See Section 1.10 - Public Traffic Management

3. Proposed exterior lighting for night work outside of the tunnel shall be the minimum necessary for safe work environment. See Section 1.11 - Noise and Exterior Lighting Management.

Statement of Work page 4 of 10

4. No onsite work shall be performed during federal holiday periods unless otherwise directed by the

Contracting Officer.

B. Existing Utilities

1. Existing Utilities: Inside the Barry-Baker Tunnel, existing utilities are exposed and highly visible.

Contractor shall be responsible for preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government.

2. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be made in accordance with the Changes clause of the contract.

3. Water Systems. The Contractor will be authorized to use water derived from NPS property. COR will provide location of water source and instructions on use of the water valve.

C. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others.

1.6 SMOKING

A. Smoking is not permitted, except in park designated smoking areas. Designated smoking areas shall be approved by the COR.

1.7 CONTRACTOR REQUIRED SUBMITTALS

A. The following items shall be submitted a minimum of one week prior to the beginning of work:

1. Service Work Schedule.

2. Accident Prevention Plan.

3. Traffic Control Plan

Traffic Control Plan. A Traffic Control Plan must be approved by the CO prior to tunnel closure and submitted for review and approval two weeks ahead of planned start of tunnel cleaning operations. Any changes to the Traffic Control Plan will be provided to the Contracting Officer prior to implementing changes. The Traffic Control Plan will include the following parameters:

1. Flaggers.

a. A minimum of two (2) flaggers will be used to direct traffic through the Conzelman Road detour.

The flaggers will be in communication with each other in addition to the pilot car driver to safely direct traffic through the detour.

1) All workers shall be equipped with a reflective vest and hard hat per the latest

ANSI/ISEA 107 Standards. All flaggers shall also be equipped with a stop/slow paddle and shall be trained in the proper fundamentals of flagging traffic

b. One (1) flagger will be located at the entrance to roundabout at McCullough Road and

Conzelman Road.

c. One (1) flagger will be at the intersection of Conzelman Road and the entrance road to the

Dillingham parking lot.

2. Pilot Car.

a. One (1) pilot car will lead one way traffic safely to and from McCullough Road/Conzelman

Statement of Work page 5 of 10

Road traffic circle to the intersection of Conzelman Road and Alexander Avenue.

b. Pilot Car will ensure that no vehicles stop along the route, including any of the overlooks along the route.

3. Signage.

a. Detour signs will be placed at McCullough/Bunker Road and at East Bunker Road and Danes

Drive. An NPS provided CMS sign will be located at the 101 Alexander Avenue off ramp that will direct traffic directly to Conzelman Road. Remove the detour and open the tunnel to public traffic for the period 6am to 10pm.

4. Traffic Control Devices

a. Traffic control devices will meet California Manual of Uniform Traffic Control Devices (CA

MUTCD).

b. Conzelman Road Overlook Closures

1) Conzelman Road overlooks will be closed to traffic. Overlook closure is necessary to provide a visual and physical barrier to deter traffic from stopping in these locations during detour hours of operation.

2) Standard traffic cones will be placed at a minimum 10 ft. intervals along the entire length of each of the three (3) overlook parking areas between McCullough Road and Alexander Avenue.

See Attachment 1_Drawings_Maps_Figures

5. Traffic Control Summary Sheet

a. To provide support to NPS’s staff and public information, Contractor will prepare a 1-page summary of the Traffic Control Plan that includes traffic control actions to be implemented, anticipated completion date, and the name of the Contractor’s Traffic and Safety Supervisor and telephone number.

1.8 NOISE & EXTERIOR LIGHTING MANAGEMENT

A. Definitions

• Ambient noise level: The total noise associated with a given environment, being usually a composite of normal or existing sounds from all sources near and far, excluding the noise source at issue.

• Daytime: The hours from 8 a.m. to 6 p.m. on weekdays and 9 a.m. to 6 p.m. on weekends and holidays.

• Nighttime: All non-daytime hours.

• Receiving noise area: Any real property where people live or work and where noise is heard, excluding the project or source area

B. The need for exterior temporary lighting outside of the tunnel shall be minimized. Nighttime work is required by the Contracting Officer, the contractor shall provide specifications for the actual lighting to be used and obtain Contracting Officer approval before bringing the lighting onto the site.

1.9 HOUSEKEEPING AND SITE MANAGEMENT

A. Materials stored on site should be stored in conformance to federal, state, local, and manufacture’s regulations and specifications.

Statement of Work page 6 of 10

B. Contractors are prohibited from feeding resident wildlife. Contractors shall properly disposal of food waste and garbage to discourage feeding by wildlife, including corvids (scavengers, such as ravens), which may increase predation on native wildlife.

C. Solid waste should be managed in conformance to federal, state, and local regulations.

D. Hazardous waste (including contaminated soil) should be managed in conformance to federal, state, local and NPS regulations and guidelines.