Attachment 1 to Addendum 2_specs.pdf

Prior Approval Substitution Review Comments

The following products have been reviewed as Prior Approval Substitutions:

Phenolic Locker Manufacturers:

Proposed manufacturer: Summit Lockers

• No exceptions taken

Air and Weather Barrier:

Proposed system: TK-AirMax 2102 Non-Permeable Fluid-Applied Air and Weather Barrier

• There is no basis of design specified for this product. The product should be submitted after award through the standard submittal review procedures. If the product is different from the specified product – either in performance or is a wholly different product – then it will need to be submitted for substitution consideration after award using the standard substitution procedures.

Checking is only for general conformance with the design concept of the project and general compliance with the information given in the contract documents. Any action shown is subject to the requirements of the plans and specifications. Contractor is responsible for dimensions which shall be confirmed and correlated at the job site; fabrication processes and techniques of construction; coordination of his work with that of all other trades and the satisfactory performance of this work.

END OF REVIEW COMMENTS

Project: USDA APHIS MAB Building 6403 Renovation

Date: 08/19/2026

8/12/2026 REV 1

APHIS MAB Building 6403 Renovation

TABLE OF CONTENTS

000001 - 1

TABLE OF CONTENTS

011000 – Summary

012300 – Alternates

012500 – Substitution Procedures

013100 – Project Management and Coordination

013300 – Submittal Procedures

013526 – Governmental Safety Requirements

014000 – Quality Requirements

014200 – References

015000 – Temporary Facilities and Controls

016000 – Product Requirements

017300 – Execution

017419 – Construction Waste Management and Disposal

017700 – Closeout Procedures

017823 – Operation and Maintenance Data

017839 – Project Record Documents

017900 – Demonstration and Training

019113 – General Commissioning Requirements

024119 – Selective Demolition

030130 – Maintenance of Cast-In-Place Concrete

031000 - Concrete Forming and Accessories

032000 – Concrete Reinforcing

033000 – Cast-in-Place Concrete

040110 – Masonry Cleaning

040120.63 – Brick Masonry Repair

042000 – Unit Masonry

042200 – Concrete Unit Masonry

055213 – Pipe and Tub Railings

061000 – Rough Carpentry

061600 - Sheathing

070150.19 – Preparation for Reroofing

072100 – Thermal Insulation

072119 – Foamed-In-Place Insulation

072600 – Vapor Retarders

072713 – Modified Bituminous Sheet Air Barriers

072726 – Fluid-Applied Membrane Air Barriers

075423 – Thermoplastic-Polyolefin (TPO) Roofing

076200 – Sheet Metal Flashing and Trim

077100 – Roof Specialties

077200 – Roof Accessories

078413 – Penetration Firestopping

078443 – Joint Firestopping

079200 – Joint Sealants

8/19/2026 REV 2

TABLE OF CONTENTS

000001 - 2

081113 – Hollow Metal Doors and Frames

081116.13 – Interior Aluminum Doors and Frames

081416 – Flush Wood Doors

087100 – Door Hardware

088000 – Glazing

092216 – Non-structural Metal Framing

092900 – Gypsum Bd

093013 – Ceramic Tiling

095123 – Acoustical Tile Ceilings

096513 – Resilient Base and Accessories

096516 – Resilient Sheet Flooring

096519 – Resilient Tile Flooring

099113 – Exterior Painting

099123 – Interior Painting

096714 – Resinous Floor

102113.17 – Phenolic-Core Toilet Compartments

102600 – Wall and Door Protection

102800 – Toilet and Shower Accessories

105129 – Phenolic Lockers

115313 – Laboratory Fume Hoods – OPCI

123553.13 - Metal Laboratory Casework

123661.16 - Solid Surfacing Countertops

220500 - Common Work for Plumbing

220800 – Commissioning of Plumbing Systems Support

220700 - Plumbing Insulation Systems

221100 - Water Distribution Systems

221300 - Sanitary Sewerage Systems

223000 - Plumbing Equipment

224000 - Plumbing Fixtures

230500 - Common Work Results for HVAC

230540 - Vibration and Seismic Controls for HVAC

230550 - Identification for Piping and Equipment

230590 - Testing Adjusting and Balancing

230700 - HVAC Insulation Systems

230800 - Commissioning

230900 - Instrumentation and Control Systems

230915 - Variable Frequency Drives

231123 - Natural Gas Piping

232100 - Hydronic Piping

232123 - Hydronic Pumps

232213 - Steam and Condensate Heating Piping

233100 - Metal Ducts and Casings

233300 - Air Duct Accessories

233400 - HVAC Fans

TABLE OF CONTENTS

000001 - 3

233600 - Air Terminal Units

233700 - Air Inlets & Outlets

234100 - Particulate Air Filtration

235100 - Breechings, Chimneys, and Stacks

235200 - Heating Boilers

237500 - Packaged Outdoor HVAC Equipment

238200 - Heating and Cooling Units

260010 – General Provisions

260500 – Common Work Results for Electrical

260519 – Power Conductors and Cables

260526 – Grounding and Bonding

260529 – Hangers and Supports

260540 – Outlet, Junction and Pull Boxes

260553 – Identification

260816 – Commissioning of Electrical Systems Support

260923 – Lighting Control Devices

260943 – Network Lighting Controls

262726 – Wiring Devices

262813 - Fuses

262816 – Enclosed Switches and Circuit Breakers

265100 – Lighting

270816 – Commissioning of Communication Systems Support

280816 – Commissioning of Electronic Safety & Security Systems Support

236400 - Water Chillers

237500 - Packaged Outdoor HVAC Equipment

238200 - Heating and Cooling Units

260010 – General Provisions

260500 – Common Work Results for Electrical

260519 – Power Conductors and Cables

260526 – Grounding and Bonding

260529 – Hangers and Supports

260540 – Outlet, Junction and Pull Boxes

260553 – Identification

260816 – Commissioning of Electrical Systems Support

260923 – Lighting Control Devices

260943 – Network Lighting Controls

262726 – Wiring Devices

262813 - Fuses

262816 – Enclosed Switches and Circuit Breakers

265100 – Lighting

270816 – Commissioning of Communication Systems Support

280816 – Commissioning of Electronic Safety & Security Systems Support

235716 - Environmental Growth Chambers

METAL LABORATORY CASEWORK

123553.13 - 1

SECTION 123553.13 - METAL LABORATORY CASEWORK

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Metal laboratory casework.

2. Countertops.

3. Laboratory accessories.

4. Water and laboratory service fittings.

1.2 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings: For laboratory casework. Include plans, elevations, sections, and attachments to other work including blocking and reinforcements required for installation.

C. Samples: For casework finishes and materials requiring color selection.

D. Delegated Design Submittals: For laboratory casework indicated to comply with seismic performance requirements, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

1.4 INFORMATIONAL SUBMITTALS

A. Product test reports.

PART 2 - PRODUCTS

2.1 METAL LABORATORY CASEWORK

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. BMC, Inc.

2. Hamilton Laboratory Solutions, LLC.

3. ICIscientific.

METAL LABORATORY CASEWORK

123553.13 - 2

4. Kewaunee Scientific Corporation.

5. Lab Crafters, Inc.

6. Mott Manufacturing Ltd.

7. Multi-Lab, Inc.

B. Product Designations: Drawings indicate sizes and configurations of laboratory casework by referencing designated manufacturer's catalog numbers. Other manufacturers' laboratory casework of similar sizes and similar door and drawer configurations and complying with

Specifications may be considered. See Section 016000 "Product Requirements."

2.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Engage a qualified professional engineer, as defined in Section 014000

"Quality Requirements," to design laboratory casework installation.

2.3 CASEWORK, GENERAL

A. Casework Product Standard: Comply with SEFA 8 M, "Laboratory Grade Metal Casework."

B. Flammable Liquid Storage: Where cabinets are indicated for solvent or flammable liquid storage, provide units that are listed and labeled as complying with requirements in NFPA 30 by a testing and inspecting agency acceptable to authorities having jurisdiction.

C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2.4 METAL CASEWORK MATERIALS

A. Stainless Steel Sheet: ASTM A240, Type 304

1. Finish: AISI No. 4 Brushed Finish

2.5 CABINET HARDWARE

A. General: Provide laboratory casework manufacturer's standard, commercial-quality, heavy-duty hardware complying with requirements indicated for each type.

B. Drawer Pulls: Stainless steel , back-mounted pulls.

C. Drawer Slides: Manufacturer's standard; complying with ANSI/BHMA A156.9.

2.6 COUNTERTOPS

A. General: Provide laboratory tabletops and countertops with integral sink as indicated on

Drawings.

B. Stainless Steel Sheet: ASTM A240/A240M, Type 304

METAL LABORATORY CASEWORK

123553.13 - 3

1. Chemical Resistance: Minimum acceptable chemical-resistance performance is to result in no more than four Level 3 conditions when tested with indicated reagents in accordance with SEFA 3.

2. Color: Stainless Steel

2.7 METAL CABINET FABRICATION

A. Fabrication: Assemble and finish units at point of manufacture. Use precision dies for interchangeability of like-size drawers, doors, and similar parts. Perform assembly on precision jigs to provide units that are square. Reinforce units with angles, gussets, and channels. Except where otherwise specified, integrally frame and weld cabinet bodies to form dirt- and vermin-resistant enclosures. Where applicable, reinforce base cabinets for sink support. Maintain uniform clearance around door and drawer fronts of 1/16 to 3/32 inch (1.5 to 2.4 mm).

B. Drawers: Fronts made from outer and inner pans that nest into box formation, without raw metal edges at top. Sides, back, and bottom fabricated in one piece with rolled or formed top of sides for stiffening and comfortable grasp for drawer removal. Provide drawers with rubber bumpers, polymer roller slides, and positive stops to prevent metal-to-metal contact or accidental removal.

C. Adjustable Shelves: Front, back, and ends formed down, with edges returned horizontally at front and back to form reinforcing channels.

D. Toe Space: Fully enclosed, 4 inches (100 mm) high by 3 inches (75 mm) deep, with no open gaps or pockets.

E. Tables: Welded tubing legs, not less than 2 inches (50 mm) square with channel stretchers as needed to comply with product standard. Weld or bolt stretchers to legs and cross-stretchers, and bolt legs to table aprons. Provide leveling device welded to bottom of each leg.

1. Leg Shoes: Stainless steel, open-bottom, slip-on type.

F. Utilities: Provide space, cutouts, and holes for pipes, conduits, and fittings in cabinet bodies to accommodate utility services and their support-strut assemblies.

1. Provide base cabinets with removable backs for access to utility space.

G. Utility-Space Framing: Steel framing units consisting of two steel slotted channels complying with MFMA-4, not less than 1-5/8 inches (41 mm) square by 0.105-inch (2.66-mm) nominal thickness, that are connected at top and bottom by U-shaped brackets made from 1-1/4-by-1/4-inch (32-by-6-mm) steel flat bars. Framing units may be made by welding channel material into rectangular frames instead of using U-shaped brackets.

H. Filler and Closure Panels: Provide where indicated and as needed to close spaces between casework and walls, ceilings, and equipment. Fabricate from same material and with same finish as casework and with hemmed or flanged edges unless otherwise indicated.

METAL LABORATORY CASEWORK

123553.13 - 4

2.8 METAL CABINET FINISH

A. Chemical-Resistant Finish: Finish complies with acceptance levels of cabinet surface finish tests in SEFA 8 M. Acceptance level for chemical spot test to be no more than for Level 3 conditions.

2.9 COUNTERTOP FABRICATION

A. Countertops, General: Provide units with smooth surfaces in uniform plane, free of defects.

Make exposed edges and corners straight and uniformly beveled. Provide front and end overhang of 1 inch (25 mm).

B. Sinks, General: Provide sizes indicated or laboratory casework manufacturer's closest standard size of equal or greater volume, as approved by Architect.

1. Outlets: Provide with strainers and tailpieces, NPS 1-1/2 (DN 40), unless otherwise indicated.

2. Overflows: Where indicated, provide overflow of standard beehive or open-top design with separate strainer. Height 2 inches (50 mm) less than sink depth. Provide in same material as strainer.

C. Stainless Steel Shelves: Made from stainless steel sheet, not less than 0.050-inch (1.27-mm) nominal thickness, with No. 4 satin finish. Weld shop-made joints. Fold down front edge 3/4 inch (19 mm); fold up back edge 3 inches (75 mm).

1. Provide integral stiffening brackets, formed by folding up ends 3/4 inch (19 mm) and welding to upturned front and back edges.

2. After fabricating, grind welds smooth and polish to produce uniform, directionally textured finish with no cross scratches or evidence of welds. Passivate and rinse surfaces;

remove embedded foreign matter and leave surfaces clean.

D. Stainless Steel Sinks: Made from stainless steel sheet, not less than 0.050-inch (1.27-mm) nominal thickness. Fabricate with corners rounded and coved to at least 5/8-inch (16-mm) radius. Slope sink bottoms to outlet. Provide continuous butt-welded joints.

1. Provide double-wall construction for sink partitions with top edge rounded to at least 1/2-inch (13-mm) diameter.

2. After fabricating and welding, grind surfaces smooth and polish to produce uniform finish with no cross scratches or evidence of welds. Passivate and rinse surfaces; remove embedded foreign matter and leave surfaces clean.

3. Factory punch holes for fittings.

4. Provide with stainless steel strainers and tailpieces.

5. Provide with integral rims except where located in stainless steel countertops.

6. Apply 1/8-inch- (3-mm-) thick coating of heat-resistant, sound-deadening mastic to undersink surfaces.

METAL LABORATORY CASEWORK

123553.13 - 5

2.10 LABORATORY ACCESSORIES

A. Reagent Shelves: Provide as indicated, fabricated from same material as adjacent countertop unless otherwise indicated.

B. Upright Rod Assembly and Metal Crossbar: Aluminum or stainless steel. Two vertical rods and one horizontal crossbar, 3/4 inch (19 mm) in diameter and 36 inches (900 mm) long unless otherwise indicated; two flush socket receptacles and two crossbar clamps. Ends of vertical rods are tapered to fit receptacles; other rod ends are rounded.

C. Stainless Steel Pegboards: Stainless steel pegboards with removable polypropylene pegs and stainless steel drip troughs with drain outlet.

2.11 SERVICE FITTINGS

A. Service Fittings, General: Provide units complete with metal housings, receptacles, switches, pilot lights, data communication outlets, cover plates, accessories, and gaskets required for mounting on laboratory casework.

B. Electrical Wiring Devices: Comply with requirements in Section 262726 "Wiring Devices" for receptacles, switches, pilot lights, cover plates, and accessories.

C. Twisted-Pair Copper Data Outlets: Comply with requirements in Section 271513

"Communications Copper Horizontal Cabling."

D. Optical-Fiber Data Outlets: Comply with requirements Section 271523 "Communications

Optical Fiber Horizontal Cabling."

E. Electrical Receptacles: Hospital grade. 125 V, 20 A; NEMA WD 6, Configuration 5-20R unless otherwise indicated.

1. GFCI Receptacles: Feed-through type with integral LED indicator light.

2. SPD Receptacles: With LED indicator light and integral SPD in line to ground, line to neutral, and neutral to ground.

3. Color of Receptacles: As selected by Architect unless otherwise indicated or required by

NFPA 70.

F. USB Charger Receptacles: Quad, Type A, color matching electrical receptacles.

1. Type: Hospital grade.

G. Switches: Comply with NEMA WD 1, UL 20, and FS W-S-896.

1. Color of Switches: As selected by Architect unless otherwise indicated or required by

NFPA 70.

H. Data Communication Outlets: Two RJ-45 jacks for terminating 100-ohm, balanced, four-pair twisted-pair cabling complying with TIA-568-C.1; complying with Category 6. Comply with

UL 1863.

METAL LABORATORY CASEWORK

123553.13 - 6

I. Cover Plates: Provide satin-finish, Type 304, stainless steel cover plates with formed, beveled edges.

J. Cover-Plate Identification: Use 1/4-inch- (6-mm-) high letters unless otherwise indicated. For stainless steel or chrome-plated metal, stamp or etch plate and fill in letters with black enamel.

1. Provide at every cover plate.

a. Receptacles other than standard 125-V duplex, grounding type.

b. Switches and thermal-overload switches.

c. Pilot lights when located remotely from associated equipment or switch, where function is not obvious.

d. Receptacles, switches, and other locations indicated.

2. Provide the following information:

a. Voltage and phase for receptacles other than standard 125-V duplex, grounding type.

b. Indicate equipment being controlled by switches and thermal-overload switches.

c. Indicate equipment being controlled for pilot lights when located remotely from associated equipment or switch, where function is not obvious.

d. Number of the breaker in panelboard that controls device.

K. Pedestal-Type Fittings: Cast-aluminum housings with sloped single face or two faces, as indicated, with neoprene gasket under base and with concealed mounting holes in base for attaching to laboratory casework. Provide holes tapped for conduits.

L. Line-Type Fittings: Provide with cast-metal boxes with threaded holes for mounting on rigid steel conduit. Provide cover plates same size as boxes.

M. Recessed-Type Fittings: Provide with galvanized-steel boxes.

N. Finishes for Service-Fitting Components: Provide housings or boxes for pedestal- and line-type fittings with manufacturer's standard baked-on, chemical-resistant enamel in color as selected by Architect from manufacturer's full range.

PART 3 - EXECUTION

3.1 INSTALLATION OF CABINETS

A. Comply with installation requirements in SEFA 2. Install level, plumb, and true in line; shim as required using concealed shims. Where laboratory casework abuts other finished work, apply filler strips and scribe for accurate fit, with fasteners concealed where practical.

B. Utility-Space Framing: Secure to floor with two fasteners at each frame. Fasten to partition framing, wood blocking, or metal reinforcements in partitions and to base cabinets.

C. Base Cabinets: Fasten cabinets to utility-space framing, partition framing, wood blocking, or reinforcements in partitions, with fasteners spaced not more than 16 inches (400 mm) o.c. Bolt adjacent cabinets together with joints flush, tight, and uniform.

METAL LABORATORY CASEWORK

123553.13 - 7

1. Where base cabinets are installed away from walls, fasten to floor at toe space at not more than 24 inches (600 mm) o.c. and at sides of cabinets with not less than two fasteners per side.

D. Wall Cabinets: Fasten to hanging strips, masonry, partition framing, blocking, or reinforcements in partitions. Fasten each cabinet through back, near top, at not less than 16 inches (400 mm) o.c.

E. Install hardware uniformly and precisely.

F. Adjust operating hardware so drawers align and operate smoothly without warp or bind and contact points meet accurately. Lubricate operating hardware as recommended by manufacturer.

3.2 INSTALLATION OF COUNTERTOPS

A. Comply with installation requirements in SEFA 2. Abut top and edge surfaces true in plane with flush hairline joints and with internal supports placed to prevent deflection. Locate joints where indicated on Shop Drawings.

B. Field Jointing: Where possible, make in same manner as shop-made joints, using dowels, splines, fasteners, adhesives, and sealants recommended by manufacturer. Shop prepare edges for field-made joints.

C. Fastening:

1. Secure epoxy countertops to cabinets with epoxy cement, applied at each corner and along perimeter edges at not more than 48 inches (1200 mm) o.c.

2. Where necessary to penetrate countertops with fasteners, countersink heads approximately 1/8 inch (3 mm) and plug hole flush with material equal to countertop in chemical resistance, hardness, and appearance.

D. Provide holes and cutouts required for service fittings.

E. Provide scribe moldings for closures at junctures of countertop, curb, and splash with walls as recommended by manufacturer for materials involved. Match materials and finish to adjacent laboratory casework. Use chemical-resistant, permanently elastic sealing compound where recommended by manufacturer.

F. Dress joints smooth, remove surface scratches, and clean entire surface.

3.3 INSTALLATION OF SINKS

A. Underside Installation of Stainless Steel Sinks: Use laboratory casework manufacturer's recommended adjustable support system for table- and cabinet-type installations. Set top edge of sink unit in sink and countertop manufacturers' recommended chemical-resistant sealing compound or adhesive, and firmly secure to produce a tight and fully leakproof joint. Adjust sink and securely support to prevent movement. Remove excess sealant or adhesive while still wet and finish joint for neat appearance.

METAL LABORATORY CASEWORK

123553.13 - 8

3.4 INSTALLATION OF LABORATORY ACCESSORIES

A. Install accessories according to Shop Drawings, installation requirements in SEFA 2, and manufacturer's written instructions.

B. Securely fasten adjustable shelving supports, stainless steel shelves, and pegboards to partition framing, wood blocking, or reinforcements in partitions.

C. Install shelf standards plumb and at heights to align shelf brackets for level shelves. Install shelving level and straight, closely fitted to other work where indicated.

D. Securely fasten pegboards to partition framing, wood blocking, or reinforcements in partitions.

3.5 INSTALLATION OF SERVICE FITTINGS

A. Comply with requirements in other Sections for installing water and laboratory gas service fittings and electrical devices.

B. Install fittings according to Shop Drawings, installation requirements in SEFA 2, and manufacturer's written instructions. Set bases and flanges of sink- and countertop-mounted fittings in sealant recommended by manufacturer of sink or countertop material. Securely anchor fittings to laboratory casework unless otherwise indicated.

3.6 CLEANING AND PROTECTING

A. Clean finished surfaces, touch up as required, and remove or refinish damaged or soiled areas to match original factory finish, as approved by Architect.

B. Protect countertop surfaces during construction with 6-mil (0.15-mm) plastic or other suitable water-resistant covering. Tape to underside of countertop at a minimum of 48 inches (1200 mm) o.c.

3.7 SERVICE-FITTING SCHEDULE

A. Water Service Fitting, Type WF-[1].

1. Fitting Type: Rigid, gooseneck mixing faucet.

2. Mounting: Line mounted.

B. Electrical Service Fitting, Type EF-[#].

1. Fitting Type: [Pedestal, single faced] [Pedestal, double faced] [Recessed] [Line mounted].

2. Device: [One duplex receptacle] [Two duplex receptacles] [Four duplex receptacles]

[One switched receptacle] [One duplex receptacle, switch, and pilot light].

3. Additional Requirements: [GFCI] [SPD] receptacles.

C. Communication Service Fitting, Type CF-[#].

METAL LABORATORY CASEWORK

123553.13 - 9

1. Fitting Type: [Pedestal, single faced] [Pedestal, double faced] [Recessed] [Line mounted].

2. Device: [One duplex communication receptacle] [Two duplex receptacles].

D. Electrical and Communication Service Fitting, Type ECF-[#].

1. Fitting Type: [Pedestal, single faced] [Pedestal, double faced] [Recessed] [Line mounted].

2. Device: [One duplex receptacle and one duplex communication receptacle] [Two duplex receptacles and two duplex communication receptacles] [One switched receptacle and one duplex communication receptacle].

3. Additional Requirements: [GFCI] [SPD] receptacles.

END OF SECTION 123553.13

8/19/2026 REV 2 INSTRUMENTATION AND CONTROL SYSTEMS

APHIS MAB Building 6403 Renovation 230900 - 2

Controls are design build by the controls contractor. Detailed sequence of operation based on the description of operation on the plans shall be developed and submitted along with controls system plan drawings, control system diagrams, and control system component cut sheets to the engineer of record for review and approval. No change orders will be approved for graphics modifications requested by the Owner or Engineer of Record. Once approved, the Controls Contractor shall submit copies of graphics screen shots at least four (4) weeks before the beginning of functional performance testing for approval by the engineer of record. Controls Contractor must have all systems operational, all programming completed, and all point to point checkouts completed and submitted prior to the scheduled start of functional performance testing.

The description of operation on the plans provides general operational principles for the systems in this building and is intended to communicate the general intent for the performance of the different building mechanical systems. It does not include or address all detailed timing delays, relays, systems interlocks, equipment control diagrams, system interactions, etc. which must be developed by the Controls Contractor during detailed controls system design and programming.

Controls Contractor shall create the detailed sequence of operation and include this written sequence on the controls drawings. All points in the DDC system must be alarmable on the graphics. All setpoints must be user adjustable from the graphics without requiring programming changes.

Alarm programming is to be included as part of the DDC services for controls as is functional performance testing of all control systems.

Controls contractor shall include as part of the base bid an allowance that will permit changes to the written interface codes and graphics of the control programming as dictated by the Engineer or Record, Owner or Commissioning Authority. This allowance shall be eight (8) hours to cover for changes to the code and programming of the Controls system interface due to modifications to the Description of operation or parts of it by the Engineer of Record. These modifications can occur during the commissioning phase of the project or while executing functional performance testing. The Engineer of Record reserves the right to deviate from the original description of operation and to rewrite the description of operation or parts of it as to capture the complete requirements of the Owner and to provide a fully functional system. It is the Controls Contractor responsibility to provide the Owner, Commissioning Authority, and Engineer of Record a complete set of Controls Drawings, Sequence of Operation, Programming and Codes of all systems, at the end of the Commissioning Phase.

1.4 APPROVED MANUFACTURERS

Manufacturer:

1. Alerton by Honeywell

2. Delta Controls

3. Johnson Controls

4. Tridium by Honeywell

4.5. Automated Logic

Provide an HVAC control system with distributed processing units, input/output units, firmware, and standard operating software.

8/19/26 REV 2 ENVIRONMENTAL GROWTH CHAMBERS

APHIS MAB Building 6403 Renovation 235716 - 1

SECTION 235716 – ENVIRONMENTAL GROWTH CHAMBERS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and

Division 01 specification sections, apply to this section.

1.2 SUMMARY

A. This Section includes the complete turn-key refurbishment of six Environmental Growth Chambers, EGC – 4, 5, 6, 10, 11, and 12 as a delegated design as part of Alternate 03.

B. The refurbishment includes this general scope of major parts and equipment, which is not intended to be inclusive of every ancillary item, connection hardware appurtenance, and provision required for a complete turn-key package:

1. Removal of existing chilled water pump stands.

2. Removal of existing conditioning modules.

3. Removal of duct heater coil in two of the chambers.

4. Removal of existing steam stands.

5. Removal of existing control consoles.

6. Installation of new chilled water pump stands.

7. Installation of new conditioning modules.

8. Installation of new duct heater coil in two of the chambers.

9. Installation of new steam stands.

10. Installation of new control consoles.

11. New temperature and humidity sensors.

12. Start up, functional testing, user demonstration, and user training.

C. After the completion of the refurbishment, the environmental growth chambers shall be capable of maintaining a temperature setpoint as low as 65°F and as high as 90°F. The chambers shall also be capable of maintaining a humidity setpoint as low as 50% RH and as high as 85% RH.

1.3 SUBMITTALS

A. Product Data: The lists of materials and equipment shall be supported by sufficient descriptive material, such as drawings indicating components, assembly, dimensions, weights, and loadings, required clearances, and location and size of field connections. Indicate equipment, piping and connections, valves, and other appurtenances required for complete system. Provide performance data published by the manufacturer to demonstrate conformance to the specification requirements shall be provided. Catalog numbers alone will not be acceptable. Listings of items that function as parts of an integrated system shall be furnished at one time.

B. Shop Drawings: Submit a complete set of manufacturer's certified prints of assemblies, control panels, sections, and elevations. Include the following

1. Assembled unit dimensions.

2. Size and location of piping and wiring connections, valves, supports, and sensors.

3. Wiring Diagrams: Power, signal, and controls.

APHIS MAB Building 6403 Renovation 235716 - 2

C. Coordination Drawings: Floor plans drawn to scale and coordinated with the following:

1. Structural supports.

2. Piping roughing-in requirements.

3. Wiring roughing-in requirements, including spaces reserved for electrical equipment.

4. Access requirements, including working clearances for mechanical controls and electrical equipment, and service clearances.

D. Startup service reports.

E. Operation and Maintenance Data: Provide for each Environmental Growth Chamber to include in operation and maintenance manual. Include copies of full documentation package for on-site start up by the EGC manufacturer.

1.4 QUALITY ASSURANCE

A. Nameplates: Each major item of equipment shall have the manufacturer's name, serial and model numbers on a plate securely attached to the item.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Provide for secure indoor storage of all new parts and protect from moisture and physical damage.

1.6 COORDINATION

A. Coordinate the timing and schedule of the refurbishment work with other trades.

B. Coordinate connections with other trades.

C. EGC manufacturer shall become familiar with related documents noted in Section 1.1 as they relate to this scope of work.

1.7 WARRANTY

A. The EGC manufacturer shall warrant the equipment to be free from mechanical defects in material and workmanship under normal use and maintenance for one year from the date of satisfactory factory start up. If any unit part fails because of defects in workmanship or material within one year from start up, the manufacturer will remove the failed part and furnish and install a new part.

PART 2 - PRODUCTS

2.1 ENVIRONMENTAL GROWTH CHAMBERS

A. Manufacturer

1. Environmental Growth Chambers

a. 510 East Washington Street

Chagrin Falls, Ohio 44022-0390

APHIS MAB Building 6403 Renovation 235716 - 3

b. 800-321-6854

B. Provide refurbishment of existing EGCs 4, 5, 6, 10, 11, and 12 to include the following major parts and equipment for a complete and functioning chamber.

1. Remove existing chilled water pump stands and install new stands.

2. Remove existing conditioning modules and install new modules.

3. Remove duct heater coil in two of the chambers and install new heaters.

4. Remove existing steam stands and install new stands.

5. Remove existing control consoles and install new consoles.

6. Install new temperature and humidity sensors and reconnect to existing MAB Niagra control system for monitoring and to new DDC BAS system.

7. Start up, functional testing, user demonstration, and user training.

8. Include connections/anchorage to structure, supports, and pipe hangars.

2.2 SOURCE QUALITY CONTROL

A. Provide a full documentation package including approved submittal package, quality assurance plan followed during refurbishment and testing of the environmental growth chambers, Installation and

Operations/Maintenance manual, factory acceptance test report, and turn-over package with quality declaration, wiring diagram, and control module manuals.

PART 3 - EXECUTION

3.1 ENVIRONMENTAL GROWTH CHAMBER REFURBISHMENT INSTALLATION

A. Before installation, examine roughing-in for supports, piping, and electrical to verify actual locations, sizes, and other conditions affecting performance, maintenance, and operations.

B. Environmental Growth Chambers shall be installed in accordance with the manufacturer's recommendations.

Ensure unit is leveled. Install all components and accessories furnished as loose items to be field installed.

Installation shall be complete for a fully operable system.

C. Maintain manufacturer's recommended clearances for service and maintenance.

3.2 PIPING CONNECTIONS

A. Chilled water and steam: Connections shall be made by the manufacturer on-site as part of the installation.

B. Drain Piping: Low pressure condensate system is to be reused .

3.3 STARTUP SERVICE

A. Engage a factory-authorized service representative for up to 2 days to perform on-site startup service, including parts delivery inspection, installation support, commissioning, and training.

B. Inspect field-assembled components, equipment installation, and piping and electrical connections for proper assemblies, installations, and connections.

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C. Start-up procedure shall include a visual inspection as well as various technical, mechanical, and electrical tests as deemed necessary by the factory technician. The factory representative shall coordinate the start-up time with the Contractor and Owner's Representative.

D. Complete installation and startup checks according to manufacturer's written instructions and coordinate with the Owner and Owner’s commissioning agent to witness all required functional tests and the user demonstration.

E. Prepare a written startup report that records results of tests and inspections and include a copy in the operations and maintenance manual. The factory technician shall ascertain that all units are fully operational and arrange repairs if any start-up problems concerning the equipment are evident.

3.4 DEMONSTRATION & TRAINING

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain the Environmental Growth Chambers.

B. Provide up to 2 hours of training only after successful completion of all functional testing and Owner buy-off on the user demonstration. The training shall not be scheduled prior to the successful completion of all functional testing and Owner buy-off on the user demonstration so as not to waste the Owner’s time if the initial testing and demonstration are not successful.

C. Manufacturer shall supply the following literature: Startup, Operation, and Maintenance instructions, Installation instructions, Field wiring diagrams, and a Trouble-shooting guide.

END OF SECTION 235716

8/19/2026 REV 2 WATER CHILLERS

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SECTION 236400 – WATER CHILLERS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 specification sections, apply to this section.

1.2 SUMMARY

This Section includes packaged, water or air-cooled, electric-motor-driven, rotary-screw water chillers with the following features:

1. Variable-frequency controller (or motor controller).

2. Microprocessor-based controls complying with ASHRAE 135.

Related Sections include the following:

1. Division 28, Section 283500, "Refrigerant Detection and Alarm" for refrigerant monitors, alarms, and ventilation equipment interlocks.

1.3 DEFINITIONS

EER: Energy-efficiency ratio.

IPLV: Integrated part-load value.

1.4 SUBMITTALS

Product Data: The lists of materials and equipment shall be supported by sufficient descriptive material, such as drawings indicating components, assembly, dimensions, weights and loadings, sound data, required clearances, and location and size of field connections. Indicate equipment, piping and connections, valves, strainers, and thermostatic valves required for complete system.

Catalog data published by the manufacturer to demonstrate conformance to the specification requirements shall be provided. Catalog numbers alone will not be acceptable. Listings of items that function as parts of an integrated system shall be furnished at one time.

Shop Drawings: Submit a complete set of manufacturer's certified prints of water chiller assemblies, control panels, sections, and elevations, and unit isolation. If the Contractor deems deviations from the contract drawings necessary, details of such deviations, including changes in related portions of the project and the reasons, therefore, shall be submitted with the drawings. Where such deviations require piping or equipment to be supported otherwise than as shown or specified, the details submitted shall include loadings and type and kind of frames, brackets, stanchions, or other supports necessary. Approved deviations shall be made at no additional cost to the Owner. Include the following

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1. Assembled unit dimensions.

2. Operating weight and load distribution.

3. Required clearances for maintenance and operation.

4. Size and location of piping and wiring connections.

5. Vibration Isolation Calculations and Details: Signed and sealed by a qualified professional engineer.

a. Design Calculations: Calculate requirements for selecting vibration isolators and seismic restraints and for designing vibration isolation bases.

b. Vibration Isolation Base Details: Detail fabrication, including anchorages and attachments to structure and to supported equipment. Include auxiliary motor slides and rails and equipment mounting frames.

6. Wiring Diagrams: Power, signal, and control wiring.

7. Schedule of chiller performance, including water temperatures, air temperatures, capacity in Tons, Input KW, Efficiency in KW/Ton, flow rates, and pressure drops at the conditions noted below. See also equipment schedule on drawings.

a. Part load data with unloading per OEM standard condition set. Provide at 25%, 50%, 75%, and 100% capacity.

b. Data at maximum design conditions. Provide at 25%, 50%, 75%, and 100% capacity.

6.

Coordination Drawings: Floor plans drawn to scale and coordinated with the following:

1. Structural supports.

2. Piping roughing-in requirements.

3. Wiring roughing-in requirements, including spaces reserved for electrical equipment.

4. Access requirements, including working clearances for mechanical controls and electrical equipment, and tube pull and service clearances.

Manufacturer Seismic Qualification Certification: Submit certification that water chillers, accessories, and components will withstand seismic forces defined in Division 23, 230529, Section "Vibration and Seismic Controls for HVAC Piping and Equipment." Include the following:

1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

The term "withstand" means" the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational after the seismic event.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

Source quality-control test reports.

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1. Eddy Current Testing: Manufacturer shall be responsible to have all evaporator (and condenser) tubes base line documented prior to chiller start-up via eddy current testing.

2. Vibration Testing: The chiller shall be factory tested both before and after final chiller assembly.

Startup service reports.

Operation and Maintenance Data: For each water chiller to include in emergency, operation, and maintenance manual.

1.5 QUALITY ASSURANCE

ARI Certification: Signed by manufacturer certifying compliance with requirements in

ARI 550/590, "Water Chilling Packages Using the Vapor Compression Cycle."

ASHRAE Certification: Signed by manufacturer certifying compliance with ASHRAE 15 for safety code for mechanical refrigeration. Comply with ASHRAE Guideline 3 for refrigerant leaks, recovery, and handling and storage requirements.

Conform to State or local Energy Code Minimum Efficiency Requirements for water chilling packages (Table 14-1C, 14-1L, 14-1K, 14-1M).

ASME Compliance: Fabricate and label water chiller heat exchangers to comply with ASME

Boiler and Pressure Vessel Code: Section VIII, Division 1.

Comply with NFPA 70.

Comply with UL 1995.

Nameplates: Each major item of equipment shall have the manufacturer's name, serial and model numbers on a plate securely attached to the item.

Chillers shall be pressure-tested, evacuated, and fully charged with refrigerant and oil, and shall be factory rational run tested with water flowing through the vessel.

1.6 DELIVERY, STORAGE, AND HANDLING

Ship water chillers from the factory fully charged with refrigerant or nitrogen.

Provide protective covering over vulnerable components for unit protection during shipment. Fit nozzles and open ends with plastic enclosures.

Units shall be stored and handled per Manufacturer’s instructions.

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1.7 COORDINATION

Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division 03.

Coordinate installation of roof curbs and roof penetrations. These items are specified in

Division 07, Section "Roof Accessories."

1.8 WARRANTY

The manufacturer shall warrant the chillers to be free from mechanical defects in material and workmanship under normal use and maintenance for the time period as stated below. Warranty shall be submitted at time of purchase. Manufacturer shall provide two-year parts and labor warranty ending thirty, (30) months from shipment or twenty-four (24) months from start up, whichever occurs first. If any unit part fails because of defects in workmanship or material within two years from start up, the manufacturer will remove the failed part and furnish and install a new part. Compressor for the chiller shall be warranted for five (5) years. Warranty shall include supplying refrigerant charge.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

Basis-of-design: YORK YLAA Series

Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Carrier

2. YORK

3. Trane

4. Daikin

2.2 MATERIALS AND COMPONENTS:

Install and commission, as shown on the schedules and plans, factory as-sembled, charged, and tested air cooled scroll compressor chillers as specified herein. Chiller shall be designed, selected, and constructed using a refrigerant with Flam-mabilityrating of 1, as defined by

ANSI/ASHRAE STANDARD 34 Number Designa-tionand Safety Classification of

Refrigerants. Chiller shall include not less than two refrigerant circuits above 50 tons (200 kW), scroll compressors, direct-expansion type evaporator, air-cooled condenser, refrigerant, lubrication system, interconnecting wir-ing, safety and operating controls including capacity controller, control center, motor starting components, and special features as specified herein or required for safe, automatic operation.

Cabinet:

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1. External structural members shall be constructed of heavy gauge, galvanized steel coated with baked on powder paint which, when subject to ASTM B117, 1000 hour, 5% salt spray test, yields minimum ASTM 1654 rating of 6.

Operating Characteristics:

1. Provide low and high ambient temperature control options as required to ensure unit is capable of operation from 30°F to 115°F (-1°C to 46°C) ambient temperature.

Service Isolation valves:

1. Discharge (ball type) isolation valves factory installed per refrigerant circuit.

Includes a system high-pressure relief valve in compliance with ASHRAE 15.

Pressure Transducers and Readout Capability

1. Discharge Pressure Transducers: Permits unit to sense and display discharge pressure.

2. Suction Pressure Transducers: Permits unit to sense and display suction pressure.

3. High Ambient Control: Allows units to operate when the ambient temperature is above

115°F (46°C). Includes discharge pressure transducers.

2.3 COMPRESSORS

Compressors: Shall be hermetic, scroll-type, including:

1. Compliant design for axial and radial sealing.

2. Refrigerant flow through the compressor with 100% suction cooled motor.

3. Large suction side free volume and oil sump to provide liquid handling capability.

4. Compressor crankcase heaters to provide extra liquid migration protection.

5. Annular discharge check valve and reverse vent assembly to provide low-pressure drop, silent shutdown and reverse rotation protection.

6. Initial oil charge.

7. Oil level sight glass.

8. Vibration isolator mounts for compressors.

9. Brazed-type connections for fully hermetic refrigerant circuits.

10. Compressor motor overloads capable of monitoring compressor motor temperature.

Provides extra protection against compressor reverse rotation, phase-loss and phase-imbalance.

2.4 REFRIGERANT CIRCUIT COMPONENTS

Each refrigerant circuit shall include: a discharge service ball type isolation valve, high side pressure relief, liquid line shutoff valve with charging port, low side pressure relief device, filter-drier, solenoid valve, sight glass with moisture indicator, thermostatic expansion valves.

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2.5 HEAT EXCHANGERS

Evaporator:

1. Evaporator shall be brazed-plate stainless steel construction capable of refrigerant working pressure of 450 psig (3,103 kPa) and liquid side pressure of 150 psig (1,034 kPa).

2. Brazed plate heat exchangers shall be UL listed.

3. Exterior surfaces shall be covered with 3/4 in. (19 mm), flexible, closed cell insulation, thermal conductivity of 0.26k BTU/ hr-ft2 -°F/in.) maximum.

4. Water nozzles shall be provided with grooves for field provided ANSI/AWWA C-606 mechanical couplings.

5. Evaporator shall include vent and drain fittings and thermostatically controlled heaters to protect to -20°F (-29°C) ambient in off-cycle.

6. A 40 mesh, serviceable wye-strainer and mechanical couplings shall be provided for field installation on evaporator inlet prior to startup.

Air-Cooled Condenser:

1. Coils:

a. Condenser coils shall be constructed of a single material to avoid galvanic corrosion due to dissimilar metals. Coils and headers are brazed as one piece.

Integral sub cooling is included. Coils shall be designed for a design working pressure of 650 psig (45 bar). Condenser coil shall be washable with potable water under 100 psi (7 bar) pressure.

b. Internally enhanced, seamless copper tubes, mechanically expanded into aluminum alloy fins with full height collars. Subcooling coil an integral part of the condenser.

Design working pressure is 650 psig (45 bar).

2. Low Sound Fans: Shall be dynamically and statically balanced, direct drive, corrosion resistant glass fiber reinforced composite blades molded into a low noise, full-airfoil cross section, providing vertical air discharge and low sound. Each fan shall be provided in an individual compartment to prevent crossflow during fan cycling. Guards of heavy gauge, PVC (polyvinyl chloride) coated or galvanized steel shall be factory installed.

3. Fan Motors: High efficiency, direct drive, 6 pole, 3-phase, insulation class F, current protected, Totally Enclosed Air-Over (TEAO), rigid mounted, with double sealed, permanently lubricated, ball bearings.

2.6 CONTROLS

General: Automatic start, stop, operating, and protection sequences across the range of scheduled conditions and transients.

Power/Control Enclosure: Rain and dust tight NEMA 3R powder painted steel cabinet with hinged, latched, and gasket sealed door.

Microprocessor Control Center:

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1. Automatic control of compressor start/stop, anti-coincidence and anti-recycle timers, automatic pump down at system shutdown, condenser fans, evaporator pump, evaporator heater, unit alarm contacts, and chiller operation from 0°F to 125°F (-18°C to 52°C) ambient. Automatic reset to normal chiller operation after power failure.

2. Remote water temperature reset via 0 VDC to 10 VDC or 4 mA to 20 mA input signal or up to two steps of demand (load) limiting.

3. Software stored in non-volatile memory, with programmed setpoints retained in lithium-battery-backed real-time-clock (RTC) memory for minimum 5 years.

4. Forty character liquid crystal display, descriptions in English (or Spanish, French, Italian, or German), numeric data in English (or Metric) units. Sealed keypad with sections for

Setpoints, Display/Print, Entry, Unit Options and clock, and On/Off Switch.

5. Programmable Setpoints (within Manufacturer limits): display language; chilled liquid temperature setpoint and range, remote reset temperature range, daily schedule/holiday for start/stop, manual override for servicing, low and high ambient cut-outs, low liquid temperature cut-out, low suction pressure cut-out, high discharge pressure cut-out, anti-recycle timer (compressor start cycle time), and anti-coincident timer (delay compressor starts).

6. Display Data: Return and leaving liquid temperatures, low leaving liquid temperature cut-out setting, low ambient temperature cut-out setting, outdoor air temperature, English or metric data, suction pressure cut-out setting, each system suction pressure, discharge pressure (optional), liquid temperature reset through a 4 mA to 20 mA or 0 VDC to 10

VDC input, anti-recycle timer status for each compressor, anti-coincident system start timer…