Attachment 3 - SEED Statement of Work.pdf

STATEMENT OF WORK

December 17, 2021

CONSTRUCTION

RFP Final

Date: January 24, 2023

1. GENERAL DISCUSSION:

1.1. Project Identification

1.1.1. Project Title: Repair Domestic and Heating Water 3685

1.1.2. IJO Number(s): DEJ215201J

1.1.3. Project Package Number(s): PS 2222

1.2. Description of Work

1.2.1. The Contractor shall supply all supervision, labor, equipment, and materials to perform all work in strict accordance with the contract, this statement of work, and identified drawings to repair domestic and heating water in building 3685.

1.3. Area Description

1.3.1. Location

1.3.1.1. Bldg. 3685 is a barracks located at Stryker Ave. and LT Woodfill Rd., Lewis Main, JBLM, WA.

1.3.2. Known Existing Site Condition

1.3.2.1. Bldg. 3685 has a failing domestic hot water heater (DHWH) with failed and failing ancillary water heater system components. This DHWH also provides heating water to the barracks via heat exchangers.

1.4. Principal Items To Be Accomplished

1.4.1. The following applies to all CLINs:

1.4.1.1. All isolation valves 3” and smaller shall be full port ball valves. Isolation valves larger than 3” may be full port ball valves or butterfly valves. Valves used on domestic water piping shall have stainless steel trim and be rated for use with domestic water. All valves shall be rated for the associated system temperatures and pressures.

1.4.1.2. All new electrical conduit shall be ¾” minimum and be installed using compression fittings (watertight where exposed to elements) and be properly installed and secured per National Electric Code (NEC).

1.4.1.3. Any flexible conduit runs used shall be limited to 3’ maximum in length per component and shall be properly supported.

1.4.1.4. Cable ties/zip ties are not permitted for conduit support.

1.4.1.5. Contractor shall sequence the replacement of the domestic water loop pumps, heating water loop pumps, domestic booster system pumps, and heat exchangers such that those redundant systems do not require a complete system outage (ex: HX-1 / CP-1 and CP-3 may remain in service while HX-2 / CP-2 and CP-4 are replaced). The replacement of the expansion tanks, air separator, and CP-5 shall not exceed 4 hours per outage. Contractor may put components in hand or adjust the DDC as required to complete the component replacements.

1.4.2. Base Item CLIN 0001: Replace DHWH, Bldg. 3685, IJO: DEJ215201J, Repair

1.4.2.1. Contractor shall clean and flush the existing heating piping (entire building) using a blend of polymeric and chelating agents that will preferentially remove iron oxides and will assist in softening light calcium deposits prior to installing new DHWH and new pumps. Existing DHWH and pumps may remain connected. Follow manufacturer’s instructions for cleaning and length of time. Flush the system until the discharge water is running clear; Contractor shall notify the Government QAR and PM at the beginning and conclusion of the system flush so that the Government may observe the clarity of the water. Attach fittings, blanks, valves, etc. as required to perform the flushing through the heating water system piping and fittings only. Cleaning agent shall not be flushed through the new DHWH, new pumps, or DHW system piping. Contractor shall perform heating water testing by a 3rd party qualified water treatment contractor and develop a water treatment plan. 3rd party testing to be used for obtaining a sewage discharge permit; take a sample of system water and provide a report showing water characterization. Report to include pH, chlorine, nitrite, iron, and conductivity at a minimum. Report to accompany sewage discharge request form(s). Discharge shall be into the sanitary sewer system unless directed otherwise by American Water (AW) or DPW personnel.

Discharge permits are typically valid for one day at a time and for a specific value or range of values for volume of discharge. Separate permits may be required depending on the number of discharges needed. Contractor shall coordinate with AW for discharge permit and provide a copy to the Government Project Manager (PM) as a submittal prior to discharge.

1.4.2.2. Contractor shall provide and install a temporary DHWH system at the project location to include all necessary items to allow the temporary unit to operate during new equipment install; tees, valves, pump(s), expansion tank(s), piping, heater, etc. Contractor may utilize existing pumps and expansion tanks with temporary heater at Contractor’s risk. Contractor may not use existing DHWH with temporary heating system. Contractor to decide best heating method. Tie-in location to the existing piping shall be decided by Contractor. Connection to the building’s natural gas (NG) and electrical is acceptable. Size of temporary unit shall not be less than 1,500 MBH output and not less than 2,000 GPH recovery at 100°F temperature rise. Cut over times and restrictions are noted in section 5 below. Temporary unit shall remain in operation as required during new equipment install to ensure that the building’s temperature set points are met and the barracks has sufficient domestic hot water.

Contractor shall install fencing around the temporary DHWH system. Contractor shall remove temporary unit and fencing once new unit is operational. The temporary connection points (tees, valves, etc.) are to remain for future temporary connections.

1.4.2.3. Contractor shall remove the existing failed Laars Rheos 2,000 MBH DHWH, expansion tanks (quantity (4)), air separator, piping, flue and combustion piping, fittings, valves, electrical, etc. as required to install new DHWH. All piping, electrical, insulation, flue, etc. not to be reused by the new water heating system shall be removed.

1.4.2.4. Contractor shall remove the existing DHWH and heating water pumps (quantity (7)) and pump seismic bases. Seismic bases may remain if the associated new pump(s) will operate correctly with the existing base. If utilizing an existing base with a new pump, the Contractor shall provide correspondence from the manufacturer stating that the new pump/base system is acceptable.

Contractor shall demo associated piping, electrical, etc. as required for the installation of new pumps.

1.4.2.5. Contractor shall remove the existing two heat exchangers for the DHW/heating water system. Demo shall include piping, valves, etc. as required to install new heat exchangers.

1.4.2.6. After the DHWH, expansion tanks, air separator, and pumps are demolished, the Contractor shall notify the Government PM so that DPW O&M personnel may remove any of those items. The Contractor shall allow a 24 hour period for DPW O&M to remove any items.

1.4.2.7. The mechanical room shall be broom cleaned following demolition of the existing DHWH and associated materials and be completed prior to new equipment install. Government QAR to verify.

1.4.2.8. Contractor shall add to the existing concrete housekeeping pad as required to install the new DHWH.

Any additions to the existing housekeeping pad shall match the height and chamfered edge of the existing pad. Pad additions shall be doweled with rebar and meet ACI 301. The Contractor shall ensure the housekeeping pad does not block any floor drains and there is a minimum of 3” around all edges of the pad once the new DHWH is installed. Equipment shall be securely anchored to the pad.

1.4.2.9. Contractor shall install a 2,000 MBH DHWH IAW this SOW and manufacturer instructions with all required additional piping, fittings, flue, electrical, etc. as required for a complete and usable DHWH. Maintain clearances around and over equipment per manufacturer recommendations and arrange all electrical conduit, piping, exhaust vent, and air intake with clearances for service of all equipment. All new piping shall match existing piping type/schedule and size unless otherwise noted; type M copper is not allowed. All additional DHW copper piping shall be new and clean.

Drain lines shall be full size copper pipe unless otherwise specified by equipment manufacturer. All fittings shall be brass, bronze, or match existing. DHW system side fittings and components shall contain no lead and be suitable for domestic water systems. Soldered joints shall be made with flux and be made on copper joints below 2” in diameter. Joints 2” in diameter and above may be soldered, grooved, or pressed. All new piping and conduit shall be properly supported and fixed.

Additional specifications for the new DHWH can be seen in Attachment #1.

1.4.2.10. Contractor shall install new ASME rated pre-charged full-acceptance bladder expansion tanks (4 total) with new isolation valves, pressure gauges, and sight glasses. DHW expansion tanks shall also have anti-legionella protection. Tanks shall be designed for use with DHW or heating water depending on tank designation per as-builts and be supplied with a heavy duty butyl replaceable bladder. Tanks shall be appropriately sized for the system. Expansion tanks shall be installed IAW manufacturer recommendations. Contractor shall adjust the expansion tank air pressure, as recommended by the tank manufacturer, to match incoming water pressure. Expansion tank locations shall be determined after appropriate tanks are selected; tank locations will be approximately the same location as the existing expansion tanks. Contractor shall modify the existing housekeeping pads as required and any modifications shall conform to the standards noted in 1.4.2.8.

1.4.2.11. Contractor shall install new DHWH and heating water pumps (7 total plus any pump(s) required for new heater). New heater pump minimum flow shall not be less than the new heater’s required minimum flow rate and shall be sized appropriately. DHWH system pumps shall be inline bronze/stainless steel flange type. All pumps shall be sized appropriately for the system temperatures, pressures, volumes, and electrical IAW as-builts and manufacturer recommendations maintaining proper flow. All pumps shall have isolation valves on both sides of pump within 2’ of pump inlet/outlet. Contractor shall install new seismic bases for those new pumps that are base-mounted (for those that were not reused in section 1.4.2.4, if any). Bases shall be sized appropriately for the new pumps (verify with manufacturer and provide submittal to the Government). Those pumps to be operated via VFD per the as-builts shall have VFD’s integral to the pump motor with motor shaft grounding. Pumps shall have external VFD controllers similar to existing pumps as required. Contractor shall install pressure gauge with valving on each pump showing differential pressure.

1.4.2.12. Contractor shall install two new heat exchangers for the DHW/heating water system. New heat exchangers shall be rated for the system capacity, temperatures, and pressures and shall operate using the same temperatures and flow rates as that shown in the as-builts.

1.4.2.13. Contractor shall install new air separator (AS). AS shall be ASME certified and be sized to match the existing AS. AS shall have isolation valves on each side of AS within 2’ of AS inlet and outlet.

1.4.2.14. Contractor shall install domestic and heating water system components IAW this SOW and the heater manufacturer recommendations. These components include but are not limited to:

a. Isolation valves, balance valves/circuit setters, strainers, temperature thermometers, temperature and pressure relief valve, check valve, drain line with condensate neutralizer, flow switch, low water cut off (electronic), and DDC temperature sensors (as required). Thermometers shall not contain mercury and shall be Type 1 Class 3 Range C (0 to 240°F) style with 7 inch scale.

Gauges shall meet ASME B40.1. Note that some components may come factory installed on the new heater; all components shall be new. Contractor shall use dielectric unions where required on all new piping and components.

b. Drain lines (neutralizer, relief valve, etc.) shall be piped to the nearest floor drain. Relief valve shall be rated for 150 psi unless specified otherwise by equipment manufacturer. Temperature thermometers shall at a minimum be installed on inlet and outlet side of water heater within 2’ of inlet/outlet.

c. Flush new system (DHW and heating water) piping with water after installation of new DHWH and system components/piping.

1.4.2.15. The new DHWH shall not have any of the new components mounted directly above the heater.

1.4.2.16. Connect existing natural gas piping to unit’s gas train inlet to include; low point drain, main gas and pilot light regulators, isolation ball valves and piping to atmosphere. Use full size black gas piping.

Label all piping with type and direction of flow; match existing NG label style and size. Gas piping shall be painted to match existing if required. Natural gas meter size for gas train inlet pressure and piping shall be verified by the Contractor. Regulator may be required based on new water heater requirements.

a. Contractor shall ensure that the natural gas piping is properly grounded and bonded to the electrical service and sized correctly IAW NEC 250.122.

1.4.2.17. Contractor shall install DHWH combustion air duct and vent. Combustion air duct and venting shall be new and IAW manufacturer recommendations and ANSI Z223.1 / NFPA 54. PVC, CPVC, and Type-B Vent are not permitted for venting. Contractor shall not exceed maximum equivalent system lengths. Horizontal vent pipe shall be sloped minimum ¼” downward toward the heat exchanger to allow condensate to drain freely unless specified otherwise by equipment manufacturer. Support at intervals no less than 4’ apart. Contractor shall modify existing wall penetrations as required for new combustion air and vent; Contractor shall consider thermal expansion as required. Contractor shall provide sleeves, collars, fire stopping, and waterproofing as required for product installation and IAW manufacturer recommendations/requirements. Room air is not permitted for combustion air;

dedicated combustion air duct is required.

a. Vent termination on the building’s exterior shall be extended as required, but no more than necessary, such that any condensate that may fall from the termination does not fall on to the natural gas piping below. Termination extension shall not violate manufacturer recommendations for vent or vent termination length, type, etc. Contractor shall install bracing and/or guying as required to support the vent. Vent termination shall direct flue gas upwards towards the building’s roof line via tee or similar unless another method is prescribed by the manufacturer.

b. Contractor shall demo the existing flue gas deflection shield on the building’s exterior.

Contractor shall fire caulk shield mounting holes after shield removal.

1.4.2.18. Contractor shall insulate new piping except for drain lines with mineral fiber insulation meeting

ASTM C547 or cellular glass insulation meeting ASTM C552. Insulation thickness shall match existing and have a factory applied protective jacket. Corners shall have PVC jacket. Seal the ends of pipe insulation with brush coat of waterproof vapor barrier coating. Sections of insulated piping where support hangers are installed shall have calcium silicate insulation meeting ASTM C533 or phenolic insulation meeting ASTM C1126 Type III under the support hangers. Calcium silicate and/or phenolic insulation sections shall have a metal guard between insulation jacket and support hanger and insulation section shall be a minimum width of four times the width of the support hanger. All piping shall be properly supported. If any insulation materials used are listed in the following website, the materials shall meet the recycled content percentage listed:

https://sftool.gov/greenprocurement/green-products/1/construction-materials/22/building-insulation/0.

1.4.2.19. Contractor shall insulate existing non drain line piping that does not currently have insulation.

Follow the requirements of 1.4.2.18.

1.4.2.20. Contractor shall install name and directional labeling on each type and size of piping (new and existing) and label all new mechanical and plumbing equipment with durable identification tags.

Name and directional labeling color shall match building’s existing labeling for that type of service.

Name and directional labeling shall be installed every 10’ or 270° in bends, whichever is less. Match naming in new DDC graphics.

1.4.2.21. Install new electrical breakers, conduit, conductors, etc. as required powering all equipment.

Interior conduit shall be EMT; exterior conduit shall be RGS. Contractor shall update panel schedules as required. All new pumps and new DHWH shall have electrical disconnect switches mounted at the equipment. The existing disconnect toggle switches and knife blade disconnects may be reused if they are serviceable and rated for the new equipment that they provide protection for. If the existing disconnecting means are not reused the replacement equipment shall be new. All switches, junction boxes, etc. shall be labeled IAW the NEC.

1.4.2.22. Contractor shall install a carbon monoxide (CO) detector in the mechanical room. Exact mounting location and height to be coordinated with the Government PM. The CO detector shall be line voltage. Contractor shall install conduit and conductors as required to provide a complete and usable https://sftool.gov/greenprocurement/green-products/1/construction-materials/22/building-insulation/0 https://sftool.gov/greenprocurement/green-products/1/construction-materials/22/building-insulation/0

CO detector. CO detector shall not be interlocked with any other components and shall be powered by its own line voltage circuit.

1.4.2.23. Contractor shall connect the new DHWH to the existing emergency disconnect switch (E-stop) conforming to ASME CSD-1 and the connection shall be hardwired. Contractor shall install conduit, conductors, etc. as required to provide a complete and useable E-stop switch for emergency water heater shutdown.

1.4.2.24. Contractor shall have heater started by a factory certified representative with DPW present for safety checks. The heater shall also be inspected by a Washington State Boiler Inspector. Heater shall have a Washington State boiler inspection certificate. The certificate shall be included in the O&Ms and be provided to the Government as a submittal prior to final inspection.

1.4.2.25. Contractor shall add chemicals to the heating water system per the treatment plan developed in section 1.4.2.1 above. Provide testing results, treatment plan, and chemicals added as a submittal to the Government and place in O&M. Clean all mechanical room strainers (domestic and heating water systems) after system startup by manufacturer representative but prior to chemical addition and final inspection. Contractor shall notify DPW QAR a minimum of 48 hours prior to cleaning strainers so that DPW QAR may observe.

1.4.2.26. Contractor shall water balance the mechanical room/heater side of the heating hydronic system once new heater, pumps, etc. have been installed. Hydronic balance shall be completed prior to requesting PVT, pre-final, or final inspection. Provide balance report as a submittal.

1.4.2.27. Contractor shall install a laminated warranty tag on all new equipment stating Contractor’s name, point of contact with phone number, date of install, warranty dates, and Government PM name and email. Attach with zip tie on equipment in noticeable location and complete before Government final inspection.

1.4.2.28. Install new equipment O&M’s in a clear plastic container near heater; properly labeled “BLDG

3685 DHWH system O&M’s.” Complete before Government final inspection. Contractor shall supply Government PM with electronic copy of O&M’s as submittal.

1.4.2.29. Mechanical room floor shall be wet cleaned with cleaning agent and no abandoned materials or trash shall be left on-site prior to Government final inspection.

1.4.3. Base Item CLIN 0002: DHWH DDC Bldg. 3685, IJO: DEJ215201J, Repair

1.4.3.1. Contractor shall reconnect existing operational EMCS sensors and install new sensors as required to meet the sequence of operations in the as-builts.

1.4.3.2. Contractor shall program the existing JACE to AX 3.8 software.

1.4.3.3. Contractor shall provide controllers/communication cards, programming, graphics, etc. as required to provide a complete and usable DDC system per JBLM Regulation 23 09 23 for Direct Digital Controls (DDC). See Attachment #2 for DDC as-builts and JBLM Regulation 23 09 23.

1.4.3.4. Contractor shall conduct a modified Performance Verification Test (PVT) on new equipment with

DPW BMS system manager. Provide a PVT checklist as a submittal before scheduling PVT.

Complete seven day trend after PVT. Contractor shall follow JBLM DDC specification 23 03 23 to include a 14 day notice when requesting PVT.

2. PERFORMANCE AND SCHEDULING:

2.1. Performance Period Requirements

2.1.1. The Contractor is required to commence work under this Contract within ten (10) calendar days after the date of issuance of the Notice to Proceed (NTP) for the Base Item(s), prosecute the work diligently, and complete all work on all Base Item(s) no later than 120 calendar days after the date of issuance of the Notice to Proceed for the Base Item(s). The time stated for completion includes final cleanup of the premises and submission of all required close-out documentation.

2.2. Award of Options

2.2.1. N/A

2.3. Perform other work necessary

2.3.1. The Contractor shall be responsible for providing a complete and useable product/system and shall be responsible for accomplishing all tasks incidental to the completion of the project requirements.

Requirements for a complete and useable product which are not explicitly called out in the SOW but are reasonably discernable via any other method than destructive testing shall be considered a requirement of the project.

3. PROJECT REQUIRED SUBMITTALS:

3.1. Pre-Construction Submittals

3.1.1. Quality Control Plan – Plan shall list Contractor POC’s with phone numbers and list any subcontractor’s used with POC’s and phone numbers.

3.1.2. Accident Prevention Plan with AHA’s

3.1.3. Environmental Protection Plan

3.1.4. Hazardous materials list with safety data sheet for each material not already on the Contractor’s authorized use list (AUL).

3.1.5. Construction/Project Schedule

3.1.6. Training and Completion Letters (AT/FP, OPSEC, iWATCH, E-Verify) if required.

3.1.7. Submittal Register (ENG Form 4288-R)

3.2. Construction Submittals

3.2.1. Manufacturer’s equipment specification sheets. All applicable items such as model numbers, sizes, and accessories shall be indicated using arrows or highlight.

3.2.2. Applicable materials meeting specifications of SOW.

3.3. Closeout Submittals

3.3.1. Operation and Maintenance (O&M) manual to include:

3.3.1.1. Contractor’s Warranty Letter (IAW FAR Clause 52.246-21). Contractor’s warranty period will begin on the date that the work or phase/piece of work is accepted by the Government (BOD, final, etc.)

3.3.1.2. Equipment operations and maintenance manuals

3.3.1.3. Startup and test reports

3.3.1.4. Checklists

3.3.2. PVT trend data report

3.3.3. The Contractor shall provide a letter of non-retention for all contract documents, plans, drawings, and specifications after the destruction of all copies that are not required by the Contractor to meet legal requirements.

3.3.4. HJB Form 229

3.3.5. 1354(s) if required

3.3.6. As-Built Drawings if required

4. DRAWINGS , SPECIFICATIONS, AND CODES:

4.1. Drawings:

4.1.1. The drawings outlined below are attached:

Drawing Number

Sheet Number

Title Rev Number

Date

Attachment #1 – Equipment Specs Attachment #2 – As-Builts and DDC

4.1.2. Dimensions and utility locations are approximate and must be verified in the field.

4.2. Specifications:

4.2.1. JBLM DDC Specification 23 09 23

4.3. Codes:

4.3.1. The Contractor shall comply with all pertinent Local, State, and Federal building life/health/safety codes as listed in the individual Task Order. Typical codes include the following with the Task Order having specific applicable codes:

4.3.1.1. Applicable Unified Facilities Criteria (UFC)

4.3.1.2. UFC 1-200-01: General Building Requirements

4.3.1.3. UFC 1-200-02: High Performance and Sustainable Building Requirements

4.3.1.4. ASA IE&E SDD policy

4.3.1.5. UFC 1-201-01 Non-Permanent DOD Facilities in Support of Military Operations

4.3.1.6. EM 385-1-1 (http://www.publications.usace.army.mil/USACEPublications/EngineerManuals.aspx)

4.3.1.7. National Electrical Code, NFPA 70

4.3.1.8. National Fire Protection Association (NFPA) Codes

4.3.1.9. Telecommunication Industry Association/Electrical Industry Association Wiring Standards (Building

Telecommunication Wiring Standards)

4.3.1.10. Army Installation Information Infrastructure Architecture Policy (I3A)

4.3.1.11. JBLM Design Standard specifications (http://www.lewis-mcchord.army.mil/designstandards/)

4.3.1.12. JBLM 420-1

4.3.1.13. JBLM Master Plan, which includes Architectural Appearance Standards

4.3.1.14. PWE-707, Standard Operating Procedure for Construction and Demolition (C&D) Waste Planning and Reporting (Available through Government Project Manager)

4.3.1.15. National Pollutant Discharge Elimination System (NPDES) small Municipal Separate Storm Sewer

Systems (MS4) Permit No. WAS-026638. Use guidance documents found at http://www.publications.usace.army.mil/USACEPublications/EngineerManuals.aspx http://www.lewis-mcchord.army.mil/designstandards/ https://home.army.mil/lewis-mcchord/index.php/my-Joint-Base-Lewis-Mcchord/all-services/public_works-environmental_division/stormwater.

4.4. Additional Requirements:

4.4.1. The Contractor shall comply with the requirements of all technical exhibits, appendices, specifications, and any other documents included as part of this contract.

5. CONSTRUCTION PHASING:

5.1. Government use of the facilities is anticipated while the work under this Task Order is being performed. The work shall be planned and accomplished so as to minimize interference and inconvenience to building occupants and agencies in the vicinity and to other craftsmen who may also be working in the affected facilities. Any blockage of building exits or driveways must be coordinated in advance.

5.1.1. In the event of a conflict between the Contractor and others in an occupied facility or where other

Contractors are performing work on the same facility under other contracts, the KO shall attempt to resolve the conflict and the KO's decision shall be final.

5.2. All work shall be scheduled and coordinated with the Government Project Management Team or their designee at all times.

5.3. The Contractor may not block traffic, roads, access routes, or exits without prior coordination with the Project Manager or other authorized Government representative.

5.4. Contractor shall coordinate all shut downs/outages with DPW. Utility outages require a 14 calendar day advanced notice.

5.5. The cut over to and from the Contractor’s temporary DHWH unit to the building shall not exceed 4 hours and shall be conducted between the hours of 0900-1500 on a weekday when the outside temperature is above 50°F.

6. LIQUIDATED DAMAGES:

6.1. If the Contractor fails to complete the work within the time period specified above, liquidated damages in the amount of $362.50 per calendar day will be assessed, in addition to any amount noted in the Task Order.

7. GOVERNMENT FURNISHED MATERIAL/EQUIPMENT:

7.1. N/A.

8. ANTI TERRORISM (AT) AND OPERATIONAL SECURITY (OPSEC):

8.1. The Contractor and any of their employees, subcontractors, etc. are required to follow the AT Level I, access and general protection/security policy and procedures, Real ID Act, iWATCH, OPSEC, OPSEC Level I training, and E-Verify requirements discussed in the umbrella statement of work. These requirements are applicable to all Task Orders.

https://home.army.mil/lewis-mcchord/index.php/my-Joint-Base-Lewis-Mcchord/all-services/public_works-environmental_division/stormwater https://home.army.mil/lewis-mcchord/index.php/my-Joint-Base-Lewis-Mcchord/all-services/public_works-environmental_division/stormwater