SOW - STA Washington HVAC.pdf

SCOPE OF WORK

1. GENERAL REQUIREMENTS: The work consists of providing all labor, materials and equipment as required to remove and replace the HVAC system on the second deck of building 91 at U.S. Coast Guard Station Washington located on JBAB, 3870 Giovannoli St SW, Washington DC, 20032.

2. COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK: Upon acceptance the contractor shall commence work NLT seven (7) days after notice to proceed and work diligently to complete the entire work ready for use by twenty-one (21) working days after contract award.

3. SCOPE OF WORK: Contractor shall provide all labor, materials, equipment, and supervision to:

a. Determine heat load calculations for the HVAC system using installed ducting system.

Use heat load calculations to determine an appropriate size/capacity for indoor and outdoor units utilizing installed ducting. Provide owner with a written copy of load calculations. If it is determined that any duct work needs to be modified, changed or resized in any way due to the heat load calculations, contractor shall provide and install.

New unit shall be EPA approved A2L based refrigerant either R-454B or R-32, preferably R- 454B. Contractor shall pull and entire new line-set to include new suction lines and liquid lines that run from heat pump to air handler. Contractor shall install a new liquid line drier for each circuit and locate the new liquid line drier indoors near the air handler to prevent unnecessary corrosion from outside elements.

b. Remove and dispose of the current outdoor and indoor units. Unit will not have refrigerant in it.

c. Replace wiring and conduit from existing service disconnects to new pieces of equipment. Replace any corroded or damaged conduit or wiring found during the demo of existing equipment. If disconnects are not fused, then contractor shall replace any and all associated disconnects with new fused ones.

d. Replace all thermostat control wiring inside and outside with new UV rated wire. Provide and replace existing thermostat to match the system function.

e. Install new appropriately sized Heat pump and indoor Air handler with appropriately sized electric heater pack for AUX/Emergency heat. If any wiring needs to be upgraded or modified for the heater pack service contractor shall provide. Air handler and heater package line voltage shall have a fused disconnect for each. Equipment shall be commercial grade and produced by a reliable manufacturer utilizing parts and systems that are easily serviceable using commonly available parts/practices.

f. Contractor shall provide and install new complete liquid line solenoid valves for each circuit if needed for proper operation of system existing solenoid valves shall not be re-used.

g. Contractor shall make all necessary refrigerant piping connections and if new system requires that the line-set piping size be changed contractor shall pull a full new line-set to include the correct suction and liquid line as per the manufactures spec.

h. Contractor shall purge nitrogen while brazing any refrigerant piping. A minimum 15% brazing rod shall be used for all welds.

I. Contractor shall conduct a line-set pressure test to ensure there are no leaks in refrigerant piping. The test must include a pressure test with Nitrogen to 400psi this pressure must be held for a minimum of 24hrs and have no less than 20% drop after the 24hr period. This must be verified by Coast guard onsite personnel.

j. Contractor shall pull a Vacuum on the system to a minimum of 300 Microns and conduct a decay test for a minimum of 1 hour with a rise to no more than 500 Microns. If this test fails, the Contractor shall start over again with a new pressure test and then another Vacuum and decay test until passed for all refrigerant piping. If any leaks are found the Contractor shall immediately notify onsite personnel for inspection.,

k. Contractor shall charge the system to the manufactures specs per the provided Charging chart with unit. Contractor shall check all functions and modes of system to verify proper operation. If there are any issues contractor shall immediately notify onsite personnel.

l. Contractor shall Perform a Test and Balance (TAB) and make all adjustments to achieve the correct CFM air flows in all a ected spaces for system proper operation.

m. Provide the Coast Guard Stations engineers with pertinent literature and an overview of the system so they can perform normal preventative maintenance.

4. SITE VISIT: All bidders are strongly encouraged to visit the site to field verify any/all quantities before submitting bids. Interested parties shall plan for a site visit MKC James Tooker @ 202-591-5944.

5. DESIGNATED CONTRACTING OFFICER’S QA EVALUATOR (QAE) REPRESENTATIVE:

The designated contracting o icer’s QAE representative and Point of Contact for this project is MKC James Tooker @ 202-591-5944. Inquiries concerning any phase of the specification before or after award shall be made to MKC James Tooker.

6. CONDITIONS AFFECTING THE WORK: The O eror should visit the site and take such other steps as may be reasonably necessary to ascertain the nature and location of the work, the general and local conditions which can a ect the cost of the work thereof. Failure to do so will not relieve bidders from responsibility for estimating properly the di iculty or cost of successfully performing the work. The government will assume no responsibility for any understanding or misrepresentations concerning conditions made by any of its o icers or agents prior to the execution of the contract, unless included in the request for quotes, the specification or related documents.

7. AFTER AWARD OF THE CONTRACT: The contractor must immediately notify the contracting o icer’s QAE representative of his intended start date. The work shall be done in accordance with the specification.

8. ORAL MODIFICATION: No oral statement of any person other than the contracting o icer shall in any manner or degree, modify or otherwise a ect the terms of this contract.

9. WORKMANSHIP: All work shall be accomplished with the best standard practices, and by workmen thoroughly experienced in the required trades. The work shall be supervised by experienced personnel and shall be satisfactory to the Contracting O icer.

10. PERMITS: The contractor shall without additional expense to the government, obtain all appointments, licenses, and permits required for the prosecution of the work. The contractor shall comply with all applicable federal, state, and local laws.

11. CLEAN UP: All trash and debris shall be removed from the site daily. The job site shall be left in a clean and neat manner.

12. WORK OUTSIDE REGULAR HOURS: If the contractor desires to carry on work on Saturday, Sunday, holidays or outside the station’s regular hours, they may submit their request in writing to the Contracting O icer’s QAE Representative for approval consideration. The contractor shall allow ample time to enable satisfactory arrangements to be made by the government for inspecting the work in progress.

13. UPON COMPLETION OF WORK: Contact the Contracting O icer QAE Representative to arrange for inspection/acceptance of work.

14. IDENTIFICATION OF CONTRACTOR PERSONNEL AND VEHICLES: The contractor shall provide a detailed list of all employees to the QAE Representative five (5) days prior to commencing work. The employee list shall contain the employee’s full name, date and place of birth, current address and last four (4) of SSN. The Station Washington Security O icer will be given a copy of the employee list and a pass will be issued for entry. Each contractor provided vehicle or towed trailer shall show the contractor’s name so that it is clearly visible on the vehicle. A valid state license plate and safety inspection sticker is required. All vehicles operated on government property shall be maintained in a good state of repair.

15. SAFETY REQUIREMENTS:

1. Responsibilities:

a. All contractors working on Station Washington shall abide by all federal safety regulations as published by the Occupational Health and Safety Administration, 29 CFR 1910 (series) and 29 CFR 1926 (series). Contractor written safety programs shall be reviewed by the Base Safety O icer prior to starting work.

b. Written notification must be provided to the Station Safety O icer, James Tooker 202- 591-5944 in their capacity as Station Fire Marshal of any activity that could potentially cause fire or explosion or that changes or reduces the capability of fighting a fire or explosion. Some examples of qualifying activities are: a fire hydrant or fire suppression system that must be taken out of service for any reason, electrical work that a ects fire alarm systems, introduction of hazardous or flammable material onto the Station, and blocking of any egress routes or emergency vehicle routes. Inclusion of this information in the contract constitutes written notification as long as the outsource review sheet is signed by Station Safety O icer.

c. Copies of the following must be provided to the Station Safety O icer prior to starting work in a ected areas: Confined Space Entry Permits, Hot Work Chits, and Dig Chits.

Confined space clearance must be conducted by a certified marine chemist and permit required spaces will have a copy of the permit posted on site during work. Hot work will only be conducted with permission and a fire watch must be posted during work.

d. Lock Out/Tag Out requires notification and coordination with facilities and will not be conducted by a contractor on JBAB. A station authorized representative is required for all contractor Lock Out/Tag Out needs.

2. Rights: a. Every employee working on Station Washington has the right to a safe and healthy work place. The contractor has the responsibility and right to stop unsafe work.

QAE’s and the Safety O icer may also institute a work stoppage relating to unsafe practices or immediate danger to life and health situations.

16. ENVIRONMENTAL PROTECTION REQUIREMENTS:

a. All contractors working on Station Washington shall abide by all federal environmental regulations as published by the Environmental Protection Agency, 40 CFR (series).

Contractor written environmental management and pollution prevention programs shall be reviewed by the Environmental Protection Specialist, Chris Ollice (757.483.8593 or C 757.373.2558) prior to starting work and must be in accordance with ICSPORTSVA INSTM5090.2, the Unit Environmental Guide.

b. Written notification must be provided to the Environmental Protection Specialist of any activity that could potentially cause a permit violation on Station Annapolis. Some examples of qualifying activities are: any activity that could result in a spill or discharge into a waterway or introducing a hazardous material into the environment

c. Copies of the following must be provided to the Environmental Protection Specialist prior to starting work in a ected areas: Safety Data Sheets, permits, and notices of intent.

d. Hazardous materials used by a contractor are required to be disposed of by that contractor. Disposal must be in accordance with federal, state, and local guidelines.