B3_W9126G19B0006_Amendment_0003.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04 EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The Solicitation for Building 23640 HVAC Renovation White Sands Missile Range, New Mexico is amended as follows.

See SF30 Continuation Sheet(s)

NOTE: Bid Receipt date is 13 August 2019; at 10:00 am.,CDT.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA 15C. DATE SIGNED 15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer) (Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X 9A. AMENDMENT OF SOLICITATION NO.

W9126G19B0006

X 9B. DATED (SEE ITEM 11)

10 July 2019

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

31-July-2019

CODE

US ARMY ENGINEER DISTRICT, FORT WORTH

ATTN: CESWF-CT

819 TAYLOR ST, ROOM 2A19

P.O. BOX 17300

FORT WORTH TX 76102-0300

W9126G 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODE CODE

EMAIL: TEL:

W9126G19B0006

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

CHANGES TO SOLICITATION W9126G19B0006

1. New Sections - Add the following accompanying new sections, each bearing the notation W9126G19B0006

Appendix B - Code Analysis Memo

2. Replacement Sections: Replace the following section with the accompanying new section of the same number and title bearing the notation W9126G19B0006 0003

01 35 20.00 44 - SPECIAL PROJECT PROCEDURES FOR WHITE SANDS MISSILE RANGE

End of Summary of Changes

B23640 HVAC Renovation WSMR19B23640

SECTION 01 35 20.00 44

SPECIAL PROJECT PROCEDURES FOR WHITE SANDS MISSILE RANGE

PART 1 GENERAL

1.1 NOTICE OF RESTRICTED ACCESS TO WHITE SANDS MISSILE RANGE

White Sands Missile Range is a restricted area in its entirety. Access to the Range by foreign nationals is not authorized unless approved on a case-by-case basis by the commander. The Contractors shall present to the Contracting Officer or his representative acceptable evidence of United States citizenship or bona fide immigrant alien status for each Contractor or sub-contractor employee who will perform work at this installation.

Requests for foreign national access shall be presented to the Contracting Officer at least 14 days prior to the desired access date. The following information must be included in each visit request: Name in full, security clearance, official title or position, nationality, visa, passport, order number, or serial number, date(s) desired and purpose of visit.

1.2 CONTRACTOR ACCESS PROGRAM

White Sands Missile Range utilizes the contractor Access program known as RAPIDGate, by EID Passport. All Contractors and their employees needing daily access for prolonged periods will be required to obtain a RAPIDGate Badge. Each Contractor will be required to complete the required enrollment documentation and pay the RAPIDGate enrollment fee. The current RAPIDGate fee is $199.00 per contractor pin number, and $159.00 per each employee. All employees requiring daily access will be required to obtain a RAPIDGate Pass. Also, the Pass will be required to be renewed yearly. Employees may register at the RAPIDGate registration station located at White Sands Missile Range (WSMR). This requirement will reduce WSMR Visitor Center volume and will also reduce the time it takes for Contractor personnel to access WSMR.

EID Passport will screen each employee registered in the RAPIDGate program.

As a part of the registration process, each applicant must pass a confidential RAPIDGate background screening. Each applicant who passes the background screening and who meets all the RAPIDGate program eligibility requirements will be issued a RAPIDGate badge to wear for entrance onto White Sands Missile Range.

The Company’s RAPIDGate enrollment, and its authorized RAPIDGate badge holder’s access privileges, is valid for a set period of one year, provided that your company and its authorized RAPIDGate badge holders continue to meet the RAPIDGate program eligibility requirements at all times. EID Passport may conduct periodic background screenings of your company’s authorized badge holders on a regular basis, to verify their continued eligibility. Renewals in the RAPIDGate program are subject to your company’s, and its authorized badge holders, continued eligibility.

SECTION 01 35 20.00 44 Page 1

W9126G19B0006 0003

1.2.1 Background Checks

The Contractor may be requested to furnish information to conduct background checks for each employee to the Security Directorate and/or Pass & Badge Office prior to access to the installation.

1.2.2 Identification of Employees

The Contractor shall be responsible for furnishing to each employee, and for requiring each employee engaged on the work to display, identification as approved and directed by the Contracting Officer. Prescribed identification shall immediately be delivered to the Contracting Officer for cancellation upon release of any employee. When required, the Contractor shall obtain and provide fingerprints of persons employed on the project. Contractor and subcontractor personnel shall wear identifying markings on hard hats clearly identifying the company for whom the employee works. Contractor personnel shall wear visible Contractor-furnished employee identification badges while physically on the Installation. Each badge shall include, as a minimum, the company name, employee name, photograph, Contract Title, Contract Number, and the expiration date of the badge.

1.2.3 Utility Outages

Although no outages are anticipated, the following guidelines are provided: Utility outage permits are required. The contractor is responsible for the coordination and submitting all forms and sketches required for any outage. Utility, road and railroad closures require a minimum ten(10) working days advance written notice and will be subject to WSRO approval. In the case of a road closure a sketch shall be in accordance with the Manual on Uniform Traffic Control Devices, and shall be provided at no additional cost to the government.

1.2.4 General Requirements

The Contractor is responsible for daily clean-up and completes restoration of the area once the contract is complete. Work shall be accomplished in accordance with all applicable contract documents.

1.2.5 Environmental Concerns

The Contractor is responsible for getting all Environmental approvals (SWPPP's, etc…..). The Contractor shall prepare a SWPPP for review by the Government and shall be a co-permittee on the NPDES permit. Once the Government has reviewed and accepted the Contractor's submitted SWPPP, the Contractor shall submit a Notice Of Intent (NOI) and provide a copy to the Government no later than 5 days prior to earth disturbance. See Section 01 57 20.20 44 ENVIRONMENTAL PROTECTION FOR WHITE SANDS MISSILE RANGE for more detail.

SWPPP: All work shall be in accordance with the National Pollutant Discharge Elimination System Manual (NPDSM) December 2003. The Contractor is responsible for installing and maintaining all erosion and sediment control devices until permanent stabilization of the disturbed site has occurred. All erosion and sediment control devices shall be inspected weekly and after every storm and repairs made if necessary. At the completion of construction and after the vegetation has been established, the Contractor shall remove all temporary erosion and sediment control devices. The Contractor shall construct or install temporary and

SECTION 01 35 20.00 44 Page 2 permanent erosion and sediment control best management practices (BMPs) in accordance with UFSWF Guide Specification Section 01 57 23 STORM WATER

POLLUTION PREVENTION MEASURES.

Unexploded Ordinance (UXO): The project does not have any historical documentation of any incidences of Unexploded Ordinance (UXO's). However, WSMR is an active range and all Contractor employees must have WSMR provided UXO training. No one is allowed on WSMR range areas without the training. No one shall disturb any suspicious object or item that could be a UXO and it should be immediately reported to 678-7588 or 678-3411.

Information on projected roadblocks, lockouts, and lock-ins can be obtained by calling (575) 678-1178 (recording) and/or (575) 678-2222 (office).

1.3 Demolition Waste

All non-hazardous solid waste resulting from demolition operations (construction and demolition, C&D, debris) on WSMR shall be recycled and/or disposed of at an approved off-site solid waste or recycling facility. The contractor shall segregate and recycle, at a minimum, all scrap metal including, but not limited to, steel, aluminum, copper, copper wire, brass, and pipes. The contractor shall report to the WSMR Garrison Environmental Division Solid Waste Program Manager, the tons and type of material recycled and disposed, identify the recycling and disposal facility and provide the information to the government. The contractor shall be responsible for proper collection and disposal of all other non-hazardous solid waste (trash) generated at the job site. Cardboard, paper, aluminum cans, soda and water bottles should be recycled in any available blue recycling trailer conveniently located on main post.

As an alternative to off-site disposal and recycling of C&D debris, the contractor is authorized to recycle scrap metal, asphalt, concrete and clean fill on-site. The contractor must coordinate with the WSMR Garrison Environmental Division Solid Waste Manager (678-2415) and complete and submit the WSMR Diverted/Stockpiled Materials Monthly Report Form. The contractor is authorized to dispose of other acceptable C&D debris at the on-site C&D landfill. The attached WSMR C&D Waste Turn-In Inspection Sheet identifies C&D debris accepted at the on-site C&D landfill. The contractor shall report the tons and type of material recycled and disposed to the government. The contractor is authorized to recycle all scrap metal including, but not limited to, steel, aluminum, copper, copper wire, brass, and pipes at the on-site scrap metal yard, Monday through Thursday, 7:30am to 11:30am and 12:30pm to 2:30pm.

Concrete shall be crushed in accordance with WSMR and New Mexico Air Quality regulations and government specifications. The contractor shall apply for a General Construction Permit (GCP) through New Mexico Environment Department. The contractor shall comply with the provisions (one of them is the use of water spray). Out of state contractors will need to provide a relocation notice from wherever they came from to New Mexico Environment Department as part of the GCP application. The contractor will coordinate with WSMR Garrison Environmental Division Air Quality Program Manager (678-2225) at the planning stage before crushing operation begins.

"A satellite accumulation point (SAP) must be established by the contractor for accumulation of lead-based paint and asbestos waste

SECTION 01 35 20.00 44 Page 3 generated during removal and abatement on WSMR. Contact the Hazardous Waste Management Center (HWMC), 678-4641, for further guidance. A SAP may also be required for proper management and disposal of paint related waste when other than latex or acrylic paint is used. An inventory of products to be used on WSMR, along with the manufacturer's SDS/MSDS, shall be provided to the HWMC prior to start of work.

1.4 Pre-Work and Post Work Surveys

The Contractor shall conduct a pre-work survey prior to start of on-site work and a post-work survey following physical completion of the work and prior to demobilizing from the work site. The surveys shall be conducted in the presence of the Contracting Officer's Representative or other designated Government representative. The results of the surveys shall be documented by digital photographs and descriptive narrative reports. A color copy of the survey photographs and narrative reports shall be submitted within 5 days after survey has been completed. <am#0003> Appendix B, Code Analysis Memo is provided as an informational reference only. The fire alarm systems are not part of the statement of work and should be removed, stored and re-installed per the General Demolition Notes on Construction Sheets A1-0-01 and A1-0-02. Repair and commissioning of the fire alarm systems shall be by other. </am#0003>

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION (NOT APPLICABLE)

-- End of Section --

SECTION 01 35 20.00 44 Page 4

Battery Control Building B23640 Repairs, WSMR, NM Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 1/3

To:

US Army Corps of Engineers – Fort Worth District CESWF-EC-AM 819 Taylor Street, Room 4A17 Fort Worth, TX 76102

AECOM

6200 South Quebec Street Greenwood Village, CO 80111

T: +1 (303) 694 2770 F: +1 (303) 694 3946 aecom.com

Project name:

Battery Control Building – B23640 Range Road 2 and Range Road 238 White Sands Missile Range, NM 88002

Project ref:

US Army Corps of Engineers – Fort Worth District Task Order No. W9126G18F0385 Contract No. W9126G-18-D-0001

Date:

November 16, 2018

Code Analysis Memo

This is a technical memo that assesses the code compliance of the existing Mechanical, Electrical and Fire Alarm Systems at the Battery Control Building B23640, White Sands Missile Range, New Mexico. As a result of the proposed renovation work to the mechanical systems, this Memo addresses compliance in relation to current Code of Record, some of which are listed below.

1. International Building Code (IBC), 2015

2. International Mechanical Code (IMC), 2015

3. Unified Facilities Criteria (Various)

4. NFPA 70 – National Electric Code, 2017

5. NFPA 72 – National Fire Alarm and Signaling Code, 2016

Refer to the Design Analysis for additional project Code of Record documents.

Many items will be corrected through the mechanical systems renovation process, while others may be identified and documented for future consideration. Items that fall outside of life safety and are deemed too cost prohibitive to the current scope of work, may be exempted from corrective action by the Authority Having Jurisdiction (AHJ).

The site investigation of the existing facility was conducted on October 11 th and 12th, 2018.

Fire Alarm System

Deficiency:

1. During the site observation the fire alarm (FA) system was not operational, having been disabled or failed for some time.

The system is presumed to be the original FA system installed during the initial construction of the building. The existing components are no longer supported, cannot be upgraded and are not capable of being put back into service to support the mechanical upgrades as a code-complaint system. Additionally, the fire alarm control panel (FACP) has a single source of power. This power source is a tap ahead of the main on a 120V panelboard.

Corrective Action:

To conform to current code, a new, functional fire alarm system will be required. This is a life safety requirement and cannot be exempted. The new fire alarm control panel will require two sources of power. If one source of power is a 120V panelboard then the branch circuit will require an overcurrent protection device that allows the breaker to be locked in the

<am#0003> W9126G19B0006 0003 m2pmjjf9 Cross-Out m2pmjjf9 Cross-Out

Code Analysis Memo Battery Control Building – B23640

Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 2/3

“ON” position. The second source of power is required to automatically service the FACP in a loss of power event to the first source. Typically, this second source of power is unit batteries. Under the UFC requirements, if a fire alarm system is added or replaced in a building without a mass notification system (MNS), a MNS shall be added.

The existing building is not sprinklered, but area detection devices, in addition to the mechanical duct detection devices will be tied into the new FA system.

Electrical Equipment

Deficiencies:

2. The service entrance main distribution panel (MDP) is a motor control center (MCC) serviced by a 500kVA, 480V, 3PH dry type transformer. One of the MCC cubicles has a user procedure label indicating the breaker has to be operated from inside the cubicle. Our site visit does not include invasive, or destructive observations, therefore we anticipate the operating handle is not operational in this cubicle. This operating procedure exposes the operator to live parts. The

MCC is not arc-flash labeled to instruct the operator in the proper personal protective equipment (PPE) requirements.

3. The branch circuit panel’s circuit directories are missing or contain invalid entries. The panel cover in the System B room (an annex on the south side of the building) was not installed on the panel board enclosure. This exposes occupants to live parts. The distribution panel boards are not arc-flash labeled for PPE requirements.

4. The equipment clearances in the Mechanical Room require analysis. To comply with NEC Art 110 working clearances are required to be maintained with respect to the egress paths. The door entering the Mechanical Room swings into the room. To comply with NEC Art 110, the door should swing outwards with egress hardware.

5. There are various items stored in the Mechanical Room. These items should be properly stored and not populate the

Mechanical Room.

6. Emergency egress lighting is unit battery fixtures. These fixtures are connected to receptacle circuits. Code requires the emergency egress lighting to be connected to the branch circuit servicing the lighting in the area of coverage.

Mechanical Equipment

1. Air Handling Unit, AHU-1:

• During the site investigation, AHU-1 was operational. This unit is oversized for the current facility occupancy and loading (heating/cooling requirements). This over-sizing is no longer allowed by UFC or the International Energy

Conservation Code (IECC). No variable frequency drive was equipped on the fan, eliminating the ability to throttle the AHU down to meet load capacity.

• The equipment access doors were not sealing sufficiently, allowing excessive inward and outward leakage into the unit from the mechanical room. This affects the code-required ventilation air balance.

• The AHU is of sufficient size that duct smoke detection is required. Duct detection was not operational at the time of the site visit as the FA system was non-operational.

• The return air path to AHU-1 is through an office space that can (by way of doors) become fully enclosed. This is no longer permissible by code as return air requires a clear return path back to the unit. That can be achieved various ways either with return grilles open to a common return air plenum or by a fully ducted return system.

2. Air Handling Unit, AHU-2:

• During the site investigation, AHU-2 was not in operation. This unit is appropriately sized for the area it serves and the anticipated heating/cooling demand, but appears to be somewhat disabled; heating coils were not connected.

It was unclear if the unit is properly balanced to provide sufficient outdoor air ventilation or airflow to occupied spaces.

W9126G19B0006 0003

Battery Control Building B23640 Repairs, WSMR, NM Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 3/3

• The equipment access doors were not sealing sufficiently, allowing excessive inward and outward leakage into the unit from the mechanical room. This affects the code-required ventilation air balance.

• The AHU is of sufficient size that duct smoke detection is required. Duct detection was not operational at the time of the site visit as the FA system was non-operational.

3. Air-Cooled Chillers, ACC-1 and ACC-2:

• Both of the existing units are utilizing R-22 refrigerant that are no longer allowable for new equipment and have been phased out of production. One of the units is abandoned; and verification of refrigerant removal was not possible at the time of visit. Any new equipment will utilize allowable refrigerant (HFCs such as R-410A or R-134a).

4. Exhaust Fan (Men’s Restroom):

• The exhaust serving the men’s restroom and the lower storage vault was not operational at the time of visit. The belt was detached from the pulley and the unit was not energized. This unit should be energized during occupied hours to provide code-compliant exhaust to the two spaces.

5. General Mechanical Findings

• Multiple ductwork branches were disconnected throughout the occupied spaces. This affects test and balance and code-required ventilation rates to occupied spaces, as well as the ability to maintain thermal comfort and the ability for controls (thermostats) to witness accurate space conditions and respond accordingly with heating and cooling.

• The existing heating coils are steam-sourced, which is significantly less efficient than utilizing heating water coils and won’t life cycle as required by the UFC. While still technically allowed by the UFC, steam is no longer allowed by other government agencies such as the GSA (other than direct conversion to heating water), and is quickly being phased out by many jurisdictions. The scope of work has indicated heating water will be required from the new boiler system and steam systems will be removed in their entirety.

• Densely occupied rooms (greater than 50 people per 1000 SF) were not equipped with CO2 detection as required by current code.

• Thermostat controls and timeclocks could not be verified for operation at the time of survey, but qualitative evidence would suggest the vintage controls are not providing sufficient feedback to the AHUs and reheat coils to effectively control space temperatures and unit airflow operation.

• Lead-based paint is presumed to cover most of the mechanical equipment. Asbestos insulation is presumed to cover most of the ductwork and piping. This will be further investigated by the HAZMAT team and detailed in a report under this scope of work.

• The boiler room did not have an emergency protection override (safety shutdown switch) located adjacent to the egress doors. This will be required by code to be installed with the new boiler.

• The AHU’s, which provide outside air to the facility (AHU-1, AHU-2 and AHU-3) as well as the exhaust fans which have exterior openings were not equipped with Emergency Air Distribution shutoff in compliance with UFC 4-010-

01.

Corrective Actions:

Since the entire mechanical system is being removed. These deficiencies will all be resolved under the new work.

END of Memo

</am#0003>

W9126G19B0006 0003 m2pmjjf9 Cross-Out m2pmjjf9 Cross-Out m2pmjjf9 Cross-Out

Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 1/3

To:

US Army Corps of Engineers – Fort Worth District CESWF-EC-AM 819 Taylor Street, Room 4A17 Fort Worth, TX 76102

AECOM

6200 South Quebec Street Greenwood Village, CO 80111

T: +1 (303) 694 2770 F: +1 (303) 694 3946 aecom.com

Project name:

Range Road 2 and Range Road 238 White Sands Missile Range, NM 88002

Project ref:

US Army Corps of Engineers – Fort Worth District Task Order No. W9126G18F0385 Contract No. W9126G-18-D-0001

Date:

November 16, 2018

This is a technical memo that assesses the code compliance of the existing Mechanical, Electrical and Fire Alarm Systems at the Battery Control Building B23640, White Sands Missile Range, New Mexico. As a result of the proposed renovation work to the mechanical systems, this Memo addresses compliance in relation to current Code of Record, some of which are listed below.

1. International Building Code (IBC), 2015

2. International Mechanical Code (IMC), 2015

3. Unified Facilities Criteria (Various)

4. NFPA 70 – National Electric Code, 2017

5. NFPA 72 – National Fire Alarm and Signaling Code, 2016

Refer to the Design Analysis for additional project Code of Record documents.

Many items will be corrected through the mechanical systems renovation process, while others may be identified and documented for future consideration. Items that fall outside of life safety and are deemed too cost prohibitive to the current scope of work, may be exempted from corrective action by the Authority Having Jurisdiction (AHJ).

The site investigation of the existing facility was conducted on October 11 th and 12th, 2018.

Fire Alarm System

Deficiency:

1. During the site observation the fire alarm (FA) system was not operational, having been disabled or failed for some time.

The system is presumed to be the original FA system installed during the initial construction of the building. The existing components are no longer supported, cannot be upgraded and are not capable of being put back into service to support the mechanical upgrades as a code-complaint system. Additionally, the fire alarm control panel (FACP) has a single source of power. This power source is a tap ahead of the main on a 120V panelboard.

Corrective Action:

To conform to current code, a new, functional fire alarm system will be required. This is a life safety requirement and cannot be exempted. The new fire alarm control panel will require two sources of power. If one source of power is a 120V panelboard then the branch circuit will require an overcurrent protection device that allows the breaker to be locked in the

Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 2/3

“ON” position. The second source of power is required to automatically service the FACP in a loss of power event to the first source. Typically, this second source of power is unit batteries. Under the UFC requirements, if a fire alarm system is added or replaced in a building without a mass notification system (MNS), a MNS shall be added.

The existing building is not sprinklered, but area detection devices, in addition to the mechanical duct detection devices will be tied into the new FA system.

Electrical Equipment

2. The service entrance main distribution panel (MDP) is a motor control center (MCC) serviced by a 500kVA, 480V, 3PH dry type transformer. One of the MCC cubicles has a user procedure label indicating the breaker has to be operated from inside the cubicle. Our site visit does not include invasive, or destructive observations, therefore we anticipate the operating handle is not operational in this cubicle. This operating procedure exposes the operator to live parts. The

MCC is not arc-flash labeled to instruct the operator in the proper personal protective equipment (PPE) requirements.

3. The branch circuit panel’s circuit directories are missing or contain invalid entries. The panel cover in the System B room (an annex on the south side of the building) was not installed on the panel board enclosure. This exposes occupants to live parts. The distribution panel boards are not arc-flash labeled for PPE requirements.

4. The equipment clearances in the Mechanical Room require analysis. To comply with NEC Art 110 working clearances are required to be maintained with respect to the egress paths. The door entering the Mechanical Room swings into the room. To comply with NEC Art 110, the door should swing outwards with egress hardware.

5. There are various items stored in the Mechanical Room. These items should be properly stored and not populate the

Mechanical Room.

6. Emergency egress lighting is unit battery fixtures. These fixtures are connected to receptacle circuits. Code requires the emergency egress lighting to be connected to the branch circuit servicing the lighting in the area of coverage.

Mechanical Equipment

1. Air Handling Unit, AHU-1:

• During the site investigation, AHU-1 was operational. This unit is oversized for the current facility occupancy and loading (heating/cooling requirements). This over-sizing is no longer allowed by UFC or the International Energy

Conservation Code (IECC). No variable frequency drive was equipped on the fan, eliminating the ability to throttle the AHU down to meet load capacity.

• The equipment access doors were not sealing sufficiently, allowing excessive inward and outward leakage into the unit from the mechanical room. This affects the code-required ventilation air balance.

• The AHU is of sufficient size that duct smoke detection is required. Duct detection was not operational at the time of the site visit as the FA system was non-operational.

• The return air path to AHU-1 is through an office space that can (by way of doors) become fully enclosed. This is no longer permissible by code as return air requires a clear return path back to the unit. That can be achieved various ways either with return grilles open to a common return air plenum or by a fully ducted return system.

2. Air Handling Unit, AHU-2:

• During the site investigation, AHU-2 was not in operation. This unit is appropriately sized for the area it serves and the anticipated heating/cooling demand, but appears to be somewhat disabled; heating coils were not connected.

It was unclear if the unit is properly balanced to provide sufficient outdoor air ventilation or airflow to occupied spaces.

Contract No. W9126G-18-D-0001, Task Order W9126G18F0385 3/3

• The equipment access doors were not sealing sufficiently, allowing excessive inward and outward leakage into the unit from the mechanical room. This affects the code-required ventilation air balance.

• The AHU is of sufficient size that duct smoke detection is required. Duct detection was not operational at the time of the site visit as the FA system was non-operational.

3. Air-Cooled Chillers, ACC-1 and ACC-2:

• Both of the existing units are utilizing R-22 refrigerant that are no longer allowable for new equipment and have been phased out of production. One of the units is abandoned; and verification of refrigerant removal was not possible at the time of visit. Any new equipment will utilize allowable refrigerant (HFCs such as R-410A or R-134a).

4. Exhaust Fan (Men’s Restroom):

• The exhaust serving the men’s restroom and the lower storage vault was not operational at the time of visit. The belt was detached from the pulley and the unit was not energized. This unit should be energized during occupied hours to provide code-compliant exhaust to the two spaces.

5. General Mechanical Findings

• Multiple ductwork branches were disconnected throughout the occupied spaces. This affects test and balance and code-required ventilation rates to occupied spaces, as well as the ability to maintain thermal comfort and the ability for controls (thermostats) to witness accurate space conditions and respond accordingly with heating and cooling.

• The existing heating coils are steam-sourced, which is significantly less efficient than utilizing heating water coils and won’t life cycle as required by the UFC. While still technically allowed by the UFC, steam is no longer allowed by other government agencies such as the GSA (other than direct conversion to heating water), and is quickly being phased out by many jurisdictions. The scope of work has indicated heating water will be required from the new boiler system and steam systems will be removed in their entirety.

• Densely occupied rooms (greater than 50 people per 1000 SF) were not equipped with CO2 detection as required by current code.

• Thermostat controls and timeclocks could not be verified for operation at the time of survey, but qualitative evidence would suggest the vintage controls are not providing sufficient feedback to the AHUs and reheat coils to effectively control space temperatures and unit airflow operation.

• Lead-based paint is presumed to cover most of the mechanical equipment. Asbestos insulation is presumed to cover most of the ductwork and piping. This will be further investigated by the HAZMAT team and detailed in a report under this scope of work.

• The boiler room did not have an emergency protection override (safety shutdown switch) located adjacent to the egress doors. This will be required by code to be installed with the new boiler.

• The AHU’s, which provide outside air to the facility (AHU-1, AHU-2 and AHU-3) as well as the exhaust fans which have exterior openings were not equipped with Emergency Air Distribution shutoff in compliance with UFC 4-010-

01.

Corrective Actions:

Since the entire mechanical system is being removed. These deficiencies will all be resolved under the new work.

END of Memo