W911SA-17-B-0018_Attachment_1_-_Updated_Scope_of_Work.pdf

SCOPE OF WORK

TX018 REPAIR BY REPLACEMENT CHILLER AND HVAC

Conroe USARC

4724 Montgomery Air Pkwy, Conroe, TX 77303-2298

1.GENERAL PRE-AWARD:

1.1 The intent of this project is to provide the Government with a complete and usable product at the completion.

1.2 The Contractor shall furnish and install all plant, labor, materials; tools, equipment, and supervision necessary to provide a complete and usable project per the Scope of Work (SOW), Plans, Specifications and manufacturers recommendations. All work shall be free from defects.

1.3 The Plans and Specifications are to prescribe the details for the construction and completion of the SOW, which the Contractor undertakes to perform in accordance with the terms of the contract.

1.4 The Contractor shall visit the work site to verify the site condition. If the Contractor discovers any errors or omissions in the SOW, Plans or Specifications, the Contractor shall immediately call it to the attention of the Contracting Officer (KO) and the Contracting Officer’s Representative (COR).

1.5 Where the Specifications and Plans describe portions of the work in general terms, but not in complete detail, it is understood that all work and materials will be of the highest standard using generally accepted industry practices.

1.6 The Contractor shall not interrupt the service function or disturb the support of any utilities without prior coordination with the COR/Area Facility Operations Specialist (AFOS). If any utilities are disturbed or damaged, the Contractor shall bear costs of repair or replacement.

1.7 The Contractor shall be responsible for and repair any damage to the grounds and structures caused by the Contractor or his/her sub-contractors during the performance of this project.

1.8 Any said work in the Plans and Specifications and not in the written SOW or in the SOW and not in the Plans or Specifications shall be as though shown or mentioned in both.

1.9 The Contractor shall verify all dimensions, site conditions, and any other items required to install a complete and ready to use product, prior to submitting a bid proposal for construction.

1.10 Prior to bidding, the Contractor shall provide to the KO and COR a written list of all exclusions, omissions, and any other work that he/she considers not in the scope of work that would prevent this from being a complete and ready-to-use product. If the Contractor does not provide a list of exclusions or omissions, it will be considered that all work is be completed to provide a complete and ready to use product.

1.11 The Contractor shall provide a project manager and alternate that is able to read, write, speak, and understand English.

1.12 The Contractor shall perform all the services of this contract during the normal operating hours of 7:30 A.M. to 4:30 P.M. (0730 to 1630) Monday-Friday. Facilities will be closed on all Federal Holidays.

1.12.1 Federal Holidays are as follows;

New Year’s Day – January 1 Martin Luther King Jr. Birthday – third Monday of January Washington’s Birthday – third Monday of February Memorial Day – final Monday of May Independence Day – July 4 Labor Day – first Monday of September Columbus Day – second Monday of October Veterans Day – November 11 Thanksgiving Day – fourth Thursday of November Christmas Day – December 25

1.12.2 Actual day observed for the following holidays is subject to change when the holiday date falls on a weekend; New Year’s Day, Independence Day, Veterans Day and Christmas Day.

1.13 The Contractor shall provide signs, barriers, and barricades to provide a safe working area.

Requirements of Occupational Safety and Health Act, latest edition and U.S. Army Corps of Engineers "Safety and Health Requirements Manual", latest edition, shall be strictly enforced and adhered to at all times at the job site.

1.14 The Contractor shall comply with Army Regulation (AR) 600-63, Army Health Promotion, for controlling smoking in Government buildings and facilities. In general NO SMOKING is allowed within building or within 50’ of any exit or door. Facility personnel can direct personnel to authorized smoking areas.

1.15 The Contractor shall, without additional expense to the Government, be responsible for obtaining any necessary licenses and permits, and for complying with any Federal, State, and municipal laws, codes, and regulations applicable to the performance of the work. This can include storm water permits, US Army Corps of Engineers permits, state water resources permits, US Fish and Wildlife permits, etc.

1.16 Antiterrorism (AT) Level I Training. All contractor employees, to include subcontractor employees, requiring access Army installations, facilities and controlled access areas shall complete AT Level I awareness training within 30 calendar days after contract start date or effective date of incorporation of this requirement into the contract, whichever is applicable. The contractor shall submit certificates of completion for each affected contractor employee and subcontractor employee, to the COR or to the contracting officer, if a COR is not assigned, within 30 calendar days of contract award or prior to submission of final invoice and within 45 calendar days after completion of training by all employees and subcontractor personnel. AT level I awareness training is available at the following website: http://jko.jten.mil.

1.17 iWATCH Training. The contractor and all associated sub-contractors shall brief all employees on the local iWATCH program (training standards provided by the requiring activity Antiterrorism Officer. This local developed training will be used to inform employees of the types of behavior to watch for and instruct employees to report suspicious activity to the COR.

This training shall be completed within 30 calendar days of contract award or prior to submission of final invoice and within 30 calendar days of new employees commencing performance with the results reported to the COR no later than 45 calendar days after contract award.

1.18 Access and general protection/security policy and procedures. Contractor and all associated sub-contractors employees shall provide all information required for background checks to meet installation access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services or Security Office. Contractor workforce must comply with all personal identity verification requirements (FAR clause 52.204-9, Personal Identity Verification of Contractor Personnel) as directed by DOD, HQDA and/or local policy.

In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes.

1.18.1 Contractors requiring Common Access Card (CAC). Before CAC issuance, the contractor employee requires, at a minimum, a favorably adjudicated National Agency Check with Inquiries (NACI) or an equivalent or higher investigation in accordance with Army Directive 2014-05. The contractor employee will be issued a CAC only if duties involve one of the following: (1) Both physical access to a Department of Defense (DoD) facility and access, via logon, to DoD networks on-site or remotely; (2) Remote access, via logon, to a DoD network using DoD-approved remote access procedures; or (3) Physical access to multiple DoD facilities or multiple non-DoD federally controlled facilities on behalf of the DoD on a recurring basis for a period of 6 months or more. At the discretion of the sponsoring activity, an initial CAC may be issued based on a favorable review of the FBI fingerprint check and a successfully scheduled NACI at the Office of Personnel Management.

1.18.2 For contractors that are not eligible for CAC, but require access to a DoD facility or installation. Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (Army Directive 2014-05/AR 190-13), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

1.19 The contractor employees must be adequately trained in the handling and disposal of hazardous waste, in particular, lead paint and asbestos. Hazardous materials must be handled and disposed of appropriately by the contractor. Disposal is at contractor’s expense. The contractor must comply with all local, state, and federal environmental laws, regulations, and http://jko.jten.mil/ policies prior to final approval of work completed. National Environmental Policy Act (NEPA) documents must be completed prior to award of the contract or notice to proceed.

2.GENERAL POST AWARD:

2.1 Where any conflict occurs between the requirements of federal, state, and local laws, codes, ordinances, rules and regulations, the most stringent shall govern.

2.2 The Contractor shall, at all times, keep the premises free from accumulation of waste material and rubbish caused by his work, or his subcontractors. At the completion of work, the Contractor shall thoroughly clean the work site. All debris, rubbish, and waste material shall be removed from the property at the Contractor’s expense and disposed of in an official disposal site.

2.3 The Contractor shall make no changes or deviate from the approved design of this project without written permission from the KO. In the case where a change is required, the Contractor will notify the COR of the requirement and shall not proceed with the change until such time as a modification to the contract is issued by the KO.

2.4 Prior to ordering any materials, the Contractor shall submit to the COR for approval submittals on all new items being installed on this project. Submittal may be shop drawings, diagrams, catalog cut-sheets, samples, and any other related material.

2.5 The Contractor shall submit a written construction schedule of work for this project to the KO and COR prior to the start of the project.

2.6 The Contractor shall be responsible for the conditions of the job site, including safety of all persons, and property during performance of the work. Safety shall conform to all applicable Federal, State, local laws, codes and regulations established by the Texas Division of Safety.

2.7 All work shall be in compliance with the current applicable federal, state and city codes.

2.8 All work shall be completed within 210 days upon receipt of Notice To Proceed (NTP).

3.SUBMITTALS:

Prior to ordering any materials, the Contractor shall submit to the COR for approval submittals for all new items being installed. Submittals may be cut sheets, samples, spec sheet, so long as it is clear and easily readable. Submittals must be e-mailed, faxed or sent directly to the office of the COR using Engineer Form 4025-R, dated March 2012, as the coversheet.

3.1 ACAA Manual “N” Commercial Load Calculation Report

3.2 Red-Lined As-builts reflecting new HVAC System.

3.3 Chillers

3.4 AHUs

3.5 Pumps

thomas.e.wiley Highlight

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3.6 Motors for AHU & Pumps

3.7 VSD controllers

3.8 DDS Control Components

3.9 Graphics package

3.10 Boiler

3.11 Condenser

3.12 PTAC units

3.13 Tank less Water Heater

4.SITE WORK:

The contractor shall conduct an ACCA Manual “N” Commercial Load Calculation to ensure proper sizing for a new HVAC system in this building. The contractor shall provide this information with the submittals. At the completion of the project, the contractor shall provide an independent commissioning of the new HVAC and DDC systems. Additionally the contractor shall red-line the existing as-built drawings to reflect the new HVAC System.

4.1 Project Overview

4.1.1 The contractor shall demo the existing chiller, boiler, AHUs, chemical tanks, control valves, fan coils, and all circulation pumps.

4.1.2 The contractor shall install a new HVAC system utilizing two air cooled chillers. Each chiller shall be multi-stage capable and have scroll compressors, none of which shall exceed 20 tons nominal rating. The two new air cooled chillers shall be set up to operate as alternating, lead-lag chillers. The contractor shall also install a new high efficiency multi-stage boiler. The contractor shall install new expansion/air separator tanks as well as chemical tanks for both the CHW and HW circuits.

4.1.3 The contractor shall install all necessary piping and valving for the operation and maintenance of multiple chillers on a single chilled water circuit.

4.1.4 The contractor shall install two new primary circulating pump units for each, the CHW and HW circuits (total of 4 pumps). The contractor shall set up the new pump units for each loop to operate as alternating, lead-lag pump systems. The new circulation pump units shall utilize VSD controllers. The contractor shall replace all secondary/circulating CHW or HW pumps located in the machine rooms or at the AHUs.

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4.1.5 The contractor shall inspect the existing CHW and HW piping circuits for leaks, biological growth, and damaged insulation. The contractor shall correct all leaks, also remove and replace any insulation and jacket material showing signs of damage or biological growth.

The contractor shall flush the existing CHW and HW piping to remove any possible debris before utilizing the piping for the new systems. The contractor shall correct any incorrect labeling of the CHW and HW circuits, both in the naming of the pipe and the direction of flow.

4.1.6 The contractor shall install all new VSP AHUs (9) with new control valves. The contractor shall pay particular attention to the CHW piping insulation at the AHUs to insure there are no condensation drips that will damage ceiling tiles or cause wet machine room floors.

4.1.7 The contractor shall alter the fresh air intake duct for all the AHUs. The contractor shall use the existing motorized dampers, or install new motorized dampers if none are present. The motorized dampers in the fresh air intake system shall remain closed at all times unless energized by C02 sensors, as part of the DDC system. The contractor shall install necessary access panels for future motorized damper maintenance if none are present.

4.1.8 Since the fresh air duct is now closed, the contractor shall install/enlarge RA duct to accommodate AHU requirements, and to best service the conditioned space. The contractor shall utilize RA FG at all ceiling RA locations.

4.2 AHU-1A; Machine Room 143A

4.2.1 The contractor shall remove and discard the existing AHU and the associated refrigerant lines and outdoor condenser. The contractor shall install a new Variable Speed Drive AHU and all necessary duct/control connections to make a fully functional system that can be monitored/controlled by the DDC system. The new AHU shall not utilize DX cooling, but shall be connected to the CHW.

4.2.1.1 The contractor shall remove all refrigerant from the DX system per IAW Section 608 of the Clean Air Act using an EPA certified refrigerant recovery system.

4.2.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use the existing motorized damper, or install a new motorized damper if none is present. The motorized damper in the fresh air intake system shall remain closed at all times unless energized by a C02 sensor, as part of the DDC system. The contractor shall install necessary access panels

4.2.3 The contractor shall determine if the RA cfm is per the AHU specifications with the outside air duct being altered. If the required RA cfm cannot be met with the existing RA duct & grill(s), the contractor shall install the necessary RA ducting and grill(s) in Corridor 143 to insure the new AHU has the required amount of RA cfm per the manufacturer’s specifications.

4.3 AHU-2A; Machine Room 143A

4.3.1 The contractor shall remove and discard the existing AHU. The contractor shall install a new Variable Speed Drive AHU and all necessary duct/control connections to make a fully functional system that can be monitored/controlled by the DDC system.

4.3.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.3.3 The contractor shall determine if the RA cfm is per the AHU specifications with the outside air duct being altered. If the required RA cfm cannot be met with the existing RA duct & grill(s), the contractor shall install the necessary RA ducting and grill(s) in Corridor 143 to insure the new AHU has the required amount of RA cfm per the manufacturer’s specifications.

4.4 AHU-3A; Above Latrine 259

4.4.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.4.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.4.3 The contractor shall add a RA duct line to service each the four classrooms served by the AHU. Each of the four classrooms served by the AHU shall have a RA FG.

4.4.4 The contractor shall remove and discard the four existing fan coils, located above each classroom. The contractor shall abandon the CHW lines for these fan coils, they will no longer be utilized.

4.4.5 The contractor shall install four VAV dampers, to operate off a control in each classroom, but also be a part of the DDC system.

4.5 AHU-4A; Machine Room 161-161A

4.5.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.5.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.5.3 The contractor shall add a RA duct to the 1st floor Maintenance Offices served by the AHU. Each of the offices served by the AHU shall have either a transfer grill to direct airflow to a centralized RA FG, or an individual duct run with a RA FG.

4.5.4 The contractor shall remove and discard the existing boiler. The contractor shall install a new chemical tank, and a boiler with a minimum efficiency rating of 95%, and multi-stage firing.

4.6 AHU-5A; Above Storage Room 183

4.6.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.6.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.6.3 The contractor shall add a RA duct and FG in the ceiling of the space served by the AHU.

4.7 AHU-6A; Above Break Room 187

4.7.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.7.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.7.3 The contractor shall add a RA duct and FG in the ceiling of the space served by the AHU.

4.8 AHU-7A; Machine Room 224

4.8.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.8.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.8.3 The contractor shall connect the AHU to the RA plenum that goes from the machine room into the ceiling space, being sure to remove any hardware cloth located in the plenum at the connection point.

4.8.4 The contractor shall render inoperable, the two gravity dampers that are located in the duct traveling up from the relief air grills, in the ceiling of Room 237, to the relief air hoods, located on the roof.

4.8.5 The contractor shall update the VAV controllers on approximately 11 VAV boxes served by the AHU. The VAV dampers shall operate off a control located in the area served by that VAV box, but shall also be a part of the DDC system.

4.9 AHU-8A; Machine Room 224

4.9.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.9.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.9.3 The contractor shall utilize the existing 36”x22” RA duct to add additional FGs in the ceiling of the space served by the AHU.

4.9.4 The contractor shall update the VAV controllers on approximately 2 VAV boxes served by the AHU. The VAV dampers shall operate off a control located in the area served by that VAV box, but shall also be a part of the DDC system.

4.10 AHU-9A; Machine Room 224

4.10.1 The contractor shall remove and discard the existing AHU. The contractor shall install a

4.10.2 The contractor shall alter the outside air intake duct for the AHU. The contractor shall use the existing motorized damper, or install a new motorized damper if none is present. The motorized damper in the fresh air intake system shall remain closed at all times unless energized

4.10.3 The contractor shall connect a new RA duct from the outside air duct to the two existing RA FGs located in the ceiling of the dining hall (directly below the outside air duct) in order to supply RA to the AHU that serves the Dining Hall.

4.11 HVAC Controls

4.11.1 The Contractor shall remove, and replace the existing Metasys EMCS system.

4.11.2 The Contractor shall provide, install, commission and test a new Bacnet/Lon compatible building level EMCS system including a new Bacnet/LonWorks® front end server, a JACE controller, HVAC DDC controllers, conduit, wiring, tubing, and programming on affected equipment. The EMCS Bacnet/LonWorks® front end server shall support all facility controllers, local graphics, and alarming, scheduling and manual functions. The contractor shall coordinate with the COR, to obtain the graphics requirement for the EMCS system, which will be provided by the Energy Management Team.

4.11.3 The JACE controller must include the fully OPEN license option that allows any Niagara-based engineering tool (such as Honeywell Tridium) to fully function with the JACE station regardless of manufacturer brand name.

4.11.4 Each of the DDC controllers must be LON compatible and connected to the building JACE via the controller I/O ports, providing the JACE with the means to interact with the building environment. Configurable controllers that require separate engineering or configuration software, and are not fully embedded within the JACE environment will not be accepted.

4.11.5 The new Bacnet/Lon compatible ARC building level EMCS system shall be configured so that properly authorized users will have the capability to monitor the system, adjust schedules, review and respond to alarms from the facility-level EMCS workstation.

4.11.6 The EMCS system shall incorporate a minimum of three (3) access levels. Each level shall require user name and password. The system shall be configured as follows:

4.11.6.1 Level 1 “Facility” will be allowed to monitor all points, but change only local/room temperatures and schedules.

4.11.6.2 Level 2 “Engineer” will be allowed level 1 privileges and be allowed to change reset schedules, outdoor lockouts and force manual overrides of inputs and outputs.

4.11.6.3 Level 3 “WebSuper” will have all the privileges of Level 1 and Level 2 plus the authority to add, delete and change Users and Engineers.

4.11.7 The EMCS Bacnet/LonWorks® front end server shall perform local building scheduling, alarm handling, local graphics and trending. The graphics shall include as a minimum the following:

4.11.7.1 Main site screen with radio buttons for major HVAC systems.

4.11.7.2 Plan view (floor plan) of building showing major HVAC systems, significant walls, doorways, entrances, etc.

4.11.7.3 Individual System sub-screens (AHU system, Heating System, Chiller System, etc.).

4.11.7.4 AHU, Heating and Chiller Screens shall include graphic depictions of mechanical equipment, associated points (filter status, supply air/water temperatures, return air/water temperatures, damper positions, run status, and cooling coil positions).

4.11.7.5 Outside air temperature shall be displayed on each screen.

4.11.7.6 The Contractor shall provide trends analysis capability for all the physical inputs and output points in the system. Trend intervals shall be user-adjustable. Trends for all energy consuming devices/systems shall be submitted as part of the Contractors Field Testing (CFT) report.

4.11.8 Graphics will consist of a minimum of four (4) screens displaying all inputs and outputs in the system at least once. The first screen will depict the floor plan with all of the space temperatures in the appropriate locations. This screen will also provide “drill down” points to additional graphics screens of AHU1, AHU2, etc. and the heating/boiler system. The User will have interface points to change room temperatures and schedules. The Engineer will have interface points to change reset schedules, outdoor lockouts and input/output overrides in addition to those provided to the user. The contractor shall coordinate with the COR, to obtain the graphics requirement for the EMCS system, which will be provided by the Energy Management Team.

4.11.9 The AHU minimum required points for control and monitoring shall be; SA temp, RA temp, Living Space Temp, C02 Sensor, C02 Damper Status, Static Pressure, VSD AHU, CHW valve, CHW temp, HW valve, and HW temp.

4.11.10 The Plant minimum required points for control and monitoring shall be; Chiller 1st stage, Chiller 2nd stage, Chiller lead, Chiller lag, Chiller SW temp, Chiller RW temp, CHW pump lead, CHW pump lag, VSD CHW pump each, HW pump lead, HW pump lag, VSP HW pump each, Outdoor temp, Boiler SW temp, and Boiler RW temp.

4.11.11 The RTU minimum required points for control and monitoring shall be; SA temp, RA temp, Living Space Temp, C02 Sensor, RTU 1st stage (heat & cool), RTU 2nd stage (heat & cool), RTU mode status, and Outdoor temp.

4.11.12 The Hydronic minimum required points for control and monitoring shall be; Space temp, and Hydronic Heater modes status.

4.11.13 The Kitchen EX fans and MUA minimum required points for control and monitoring shall be; MUA heat on/off status, SF status, EX fan status.

4.11.14 Standalone EX fans minimum required points for control and monitoring shall be; EX fan status.

4.11.15 The domestic water heating system minimum required points for control and monitoring shall be; Return water temp, supply water temp, holding tank water temp, and pump status.

4.11.16 The Radiant Tube Heaters minimum required points for control and monitoring shall be; Space temp, and Heater modes status.

4.11.17 At the completion of the project, the contractor shall provide an independent commissioning of the new HVAC and DDC systems.

4.16 North and South Hangers

4.16.1 The contractor shall install one 24’ diameter industrial HVLS type overhead fan unit in each hanger (total of 2 HVLS fans). The fan shall hang center mass. The controls shall be located on the central area wall.

4.17 OMS Building and Guard Shack

4.17.1 In the OMS, the contractor shall remove and discard the existing water heater and PTAC units. The contractor shall install two new PTAC units and a tankless water heater.

4.17.2 In the Guard Shack, the contractor shall remove and discard the existing PTAC unit.

The contractor shall install one new PTAC unit.

5.WARRANTY:

All work specified in this contract shall have a warranty of a minimum period of one full calendar year for parts and labor from the customer’s acceptance date. At the final acceptance walk-through, the Contractor shall provide to the COR a signed warranty letter.

6.QUALITY CONTROL AND INSPECTIONS:

6.1 All work shall be inspected by the contractor’s quality control person and final inspection shall be performed by the COR prior to final payment.

6.2 Contractor shall maintain a clean, clear, and safe working environment at all times.

6.3 Only qualified personnel familiar with the proper construction techniques shall be used.

6.4 All site coordination shall be accomplished through the 63rd RSC AFOS Jim Roberts.

7.POINTS OF CONTACT:

AFOS: Jim Roberts 281-233-8727 james.r.roberts215.ctr@mail.mil

COR: Floyd Reed

210-221-3945 floyd.l.reed.civ@mail.mil

Thomas Wiley Senior Engineering Technician mailto:james.r.roberts215.ctr@mail.mil mailto:floyd.l.reed.civ@mail.mil