A04_20250519_SOW_BRAC-BF.docx

STATEMENT OF WORK

Black Rock Administrative Center Double Check Valve Installation Bureau of Land Management – Nevada State Office Gerlach, Nevada April 21st, 2025

INTRODUCTION AND BACKGROUND:

The Bureau of Land Management (BLM) Winnemucca District Office requires updates to the fire sprinkler protection riser at the Black Rock Administrative Center (BRAC) by placing a backflow preventor device on the existing fire riser.

The BRAC is located at approximately 40.659410° N, -119.369610° W, 1 mile to the west of Gerlach Nevada on Transfer Station Road in Washoe County, Nevada.

Note, Gerlach Nevada is 110 Miles from Reno, the metro area with the nearest airport (RNO).

The BLM has provided site and vicinity maps and an informational schematic of the current fire riser.

The contractor must perform their own measurements and shall not rely on the government’s provided measurements.

The BLM has provided the original fire system protection design calculations and submittals for reference. The original calculations and submittals do not bear a stamp and an engineering report was not provided. A check valve is included in the submittals but was not placed on the fire riser or pipe. Documents obtained through an open records request from Washoe county for the fire sprinkler and alarm system are provided as an attachment for reference.

The Bureau of Land Management is the authority having jurisdiction. However, the NAC and NRS code requirements and certification for the system and contractor certifications with the Nevada State Fire Marshall apply to this project. Submittals to the State Fire Marshall shall instead be sent to the BLM.

SPECIAL QUALIFICATION(s) requirements:

The contractor shall be licensed for sprinkler systems by the State Fire Marshall. Per NRS 477.033 A license, issued by the State Fire Marshal, is required for maintenance, and/or installation of fire sprinkler systems. If the electrical and alarm system requires adjustment, then that shall be performed by a contractor licensed with the state fire marshal for that work. The contractor must have someone holding a certificate of registration issued by the State Fire Marshal be on the job site and directly supervise the installation of the system. Work must be performed to meet the requirements of NAC 477.483 with submittals going to the BLM.

BASE BID:

The base bid includes:

1. The Five-year NFPA 25 Inspection for the fire sprinkler system and documentation of any deficiencies and provided in writing. Includes tagging of check valves to comply with NAC, NRS requirements.

2. The installation of double check valves on the fire riser, any associated modifications required for them to fit on the fire riser, and replacement of the corroded pipe below the electronic control valve. If there is not enough room on the existing fire riser for the check valves or backflow preventer to be installed before the fire assemblies begin then the existing fire riser and assemblies will need to be adjusted to allow for the new check valves or backflow preventor to fit. This may include the but is not limited to the following assemblies: the pipe from the fire riser which runs into the building, the test drainage pipe, and the conduit and electrical wiring lengths for the fire alarm system and its controls. This work shall be considered incidental to the installation of the new assemblies. Work shall conform to requirements of NFPA 13R, the residential sprinkler system requirements.

The contractor is responsible for performing any required testing and logging of results from the testing upon installation if required for double check valves. The double check valves must allow for vertical installation. Size reducing assemblies are not allowed due to pressure requirements for the fire sprinkler.

Products:

All materials, valves, and equipment used in the installation of the fire protection system shall be U.L. listed or F.M. approved and shall be new and the standard product of a manufacturer regularly engaged in the manufacture of the product. Copper piping shall not be used.

Pipe shall be calculated for 175 psi working pressure, conforming to ASTM specifications and have the manufacturer’s name or brand, along with the applicable ASTM standard, marked on each length of pipe. Pipe shall be US manufactured. All couplings and fitting shall be of the same manufacturer. Bushings and reducing couplings shall not be allowed.

Contractor to provide fittings, valves, and accessories as needed to install the check valves or backflow preventor onto the existing standpipe and to replace the corroded portions of the existing standpipe.

The interior surfaces of all piping shall be clean and free of all dirt, loose scale, rust, and other foreign material before installation. All sprinkler piping with welded outlets or connections shall be free of welding slag and cut-outs. Welded fittings shall not protrude into the path of waterflow.

Protect all apparatus fixtures, materials, equipment and installations so as to prevent damage as a result of new work. Contractor shall replace a no cost increase to the contract sum any item which is marred, defaced, broken, or damaged in any way, prior to the date of final inspection.

Check Valve or Backflow Preventor Requirements

The check valves or backflow preventor assemblies must meet the following requirements:

· Installed on existing fire riser in compliance with Nevada Administrative Code and Nevada Revised Statute requirements.

· Approval from the Nevada State Fire Marshall’s office.

Permitting:

As the Black Rock Administrative Center’s potable water system is protected from the Gerlach Improvement District’s system by a Double Backflow Preventor on the main water service a permit is not anticipated to be required from the NDEP. NDEP clarified verbally that they do not permit the water beyond the meter though confirmation should be sought as the water system is connected to public drinking water fountains.

Upon completing the installation of an automatic sprinkler system, the licensee shall issue a letter of certification to the Authority Having Jurisdiction. The letter must certify that the system has been installed in accordance with the approved plans and all applicable national, state, and local codes. The installer shall properly identify all hydraulically designed automatic sprinkler systems with a permanently attached placard. The placard must show the location and number of sprinkler heads and the density of discharge over the designed area.

INSTALLATION:

The Contractor shall perform the work in a professional workmanlike manner, according to the best practices of the trade. Any deviations found necessary shall be immediately brought to the attention of the Contracting Officer.

The interior surfaces of all piping and equipment shall be clean and free of all dirt, loose scale, rust and other foreign material before installation. All sprinkler piping with welded outlets or connections shall free of welding slag and cut-outs. Welded fittings shall not protrude into the path of the waterflow.

SUBMISSION REQUIREMENTS

· Demonstrate that all plumbing pieces are NSF 61 certified

· Qualification Data: For Installer.

· Fittings to be of same material as previously installed or with waiver from BLM another approved non-donator metal. Submit a copy of the spare parts data for each material item specified. The data shall include a complete list of parts and the source of supply.

· Submit a copy of shop drawings on 8.5x11 or 11x17. Include wet stamp if required by Nevada State Fire Marshal requirements or the NAC/NRS.

· Certificates: Submit two copies of written certification that the wet pipe fire sprinkler system conforms to requirements of the specifications and scope of work.

The contractor will provide the below support prior to construction:

1. Processing Time: Allow enough time for submittal review, including time for resubmittals, as follows. Time for review shall commence on Contracting Officer's receipt of submittal. No extension of the Contract Time will be authorized because of failure to transmit submittals enough in advance of the work to permit processing, including resubmittals. Allow 10 calendar days for initial review of each submittal. Allow additional time if coordination with subsequent submittals is required. Contracting Officer will advise Contractor when a submittal being processed must be delayed for coordination.

DELIVERABLES

Installed backflow prevention device (Double Check Valves or Pressure Reducing Assembly) and fittings needed to correct the corrosive issue. Five-Year Inspection Report and any note of deficiencies.

Certifications for compliance with NFPA 13R.

Project Closeout

Contractor to comply with NAC 477.470 requirement for placement of tag on fire sprinkler riser.

Contractor to provide as-built drawings to the BLM prior to final payment. If a backflow device is selected under bid option 1 then the contractor is to certify the device and send updated paperwork to the Water Authority.

WARRANTY

Workmanship & materials come with a One (1) Year Warranty

PERIOD OF PERFORMANCE

The estimated performance time for this order is 122 calendar days. Extensions may be provided if government and A&E contractor reach agreement that it is necessary for the best work product in the interest of the government, if custom manufacturing of parts is required or long lead times for the replacement pump, or if permit/submittal reviews by the Fire Marshall require more than 30 days.

SPECIAL CONSIDERATIONS

Payment:

Payment will be for work described in scope of work. Labor, materials, travel & taxes are included and will not be compensated additionally.

ENCLOSURE:

PDF of Vicinity Map PDF Schematic (not design drawing) of existing Fire Riser Assembly

Photo Log of Fire Riser Assembly

Site Utility Plan

Trophy Peak Inspection Records

PDF of Washoe County fire Permit Submittals from original contractor