4-Indoor Firing Range Ventilation Study.pdf

Indoor Firing Range Ventilation Study

WASHINGTON STATE CRIMINAL JUSTICE TRAINING COMMISSION

DES Agreement No. 2026-015 S (1)

16 JANUARY 2026

CRIMINAL JUSTICE TRANING COMMISION

Agreement No. 2026-015 S (1)

TABLE OF CONTENTS

EXECUTIVE SUMMARY

PROJECT OVERVIEW

EXISTING CONDITIONS

APPROACH

ARCHITECTURAL NARRATIVE

MECHANICAL, ELECTRICAL, & PLUMBING NARRATIVE

CONCEPTUAL SCHEDULE

APPENDIX

SITE PHOTOS

HAZARDOUS MATERIALS SURVEY

AIR QUALITY / VENTILATION STUDIES

PROPOSED EQUIPMENT CUT SHEETS

Agreement No. 2026-015 S (1)

EXECUTIVE SUMMARY

Project Overview

The Washington State Criminal Justice Training Commission (WSCJTC) was established in 1974 to provide training to law enforcement, corrections officers, and other public safety professions. Its mission is to establish certification and training standards so that criminal justice professionals in Washington State have the knowledge and skills to protect the communities they serve.

WSCJTC staff have been working to mitigate health and safety issues related to the non-performing ventilation system at the indoor firing range, which does not meet current L&I/DOSH and NIOSH safety standards. The agency was granted an emergency request from DES in January 2024 and, along with the ongoing remediation efforts, will seek to replace and upgrade the existing mechanical ventilation system and other system upgrades needed to ensure that the indoor firing range is a fully functional facility meeting all health and safety standards.

This study supports development of an overall project scope, budget, and schedule for the needed improvements, and includes field investigation of existing systems and research into previous studies, testing, and documentation as provided by WSCJTC staff, preliminary calculations and equipment sizing for a compliant mechanical ventilation system and related electrical upgrades.

In addition to the concept level estimate for required ventilation upgrades, cost to incorporate additional facility improvements as developed by WSCJTC staff including roof replacement, ceiling baffle upgrade, and replacement targeting system were developed and are summarized as follows:

Existing Conditions

Located on the Washington State Criminal Justice Training Commission campus in Burien, Washington, The indoor firing range was developed as a component of the Tactical Skills Training Building constructed in 1996. In addition to the indoor firing range, the facility houses a classroom, administrative office, gun cleaning room, and training room.

The firing range consists of fifteen shooting lanes and is used as a tactical dynamic range- moving downrange and shooting rather than from fixed firing lines.

Agreement No. 2026-015 S (1)

The building is approximately 61 feet x 118 feet on the main floor, with a partial second floor housing the training room. Building structure is concrete slab on grade, tilt up precast concrete panels, and steel roof structure. The envelope enclosure includes painted precast concrete panels, metal wall panels, aluminum storefront windows, and a standing seam sloped metal roof system.

First Floor Plan- Tactical Skills Training Building, Sheet A1.1 (1996)

Building Section Looking North- Tactical Skills Training Building, Sheet A1.2 (1996)

Agreement No. 2026-015 S (1)

Participants

Participants in this study include the following individuals from DES, WSCJTC, and the design team:

Brady Knowles, Project Manager, Department of Enterprise Services

Todd Dana, Facilities & Capital Projects Manager, WSCJTC

Chris Travis, Applied Skills Division Manager, WSCJTC

Henry Gill, Firearms Program Manager, WSCJTC

Russell Littleton, Maintenance Mechanic, WSCJTC

Ed Wade, Assistant Director, Support Services, WSCJTC

Jon Havelock, Med Tox Northwest

Matt Lane, Principal in Charge, McGranahanPBK

Todd Olson, Project Manager, McGranahanPBK

Garen Lencioni, Mechanical Engineer, LEAF Engineers

David Clem, Electrical Engineer, LEAF Engineers

Bret Maddox, Structural Engineer, PCS Structural Solutions

Mark Richardson, Estimator, RC Cost Group

Agreement No. 2026-015 S (1)

APPROACH

Architectural Narrative

Interior

The proposed firing range ventilation upgrade will have minor impact on interior architectural layout and finishes.

Existing ceiling baffle system over the firing range will remain in place, along with the current upgraded lighting systems. Patching in kind will occur where existing mechanical diffusers are removed from the vertical face of the baffles. In the Firing Prep area at the west end of range, the lay-in grid ceiling system will be re-worked to allow new radial flow diffusers to be installed, existing light fixtures will be salvaged and reinstalled.

Concrete floor and wall finishes will remain in current configuration. At the east end of the range, three large openings will be saw-cut into tilt up concrete panel to allow new ductwork access to building. Strong-back columns will be added adjacent to the new openings to provide panel integrity.

Along the north and south walls of the firing-range, a four foot tall band of 2” thick high-impact acoustical panels will be direct-applied to the concrete walls to provide sound absorption.

Hazardous Materials Abatement

The duct work and equipment slated for removal and their surrounding surfaces in the interstitial space above the firing range baffle system tested extremely high for metals (lead) in settled dust. Ceiling plenum decontamination, mechanical systems demolition, and range cleaning and decontamination requirements are defined in detail in the

Hazardous Building Material Survey found in the Appendix to this document.

Site

The preposed ventilation system removes all mechanical systems out of the plenum space and locates new equipment on the ground to allow improved access for filter changes and on-going maintenance. The components are to be located at the east end of the building, in a secured, fenced Service Yard. The security fence enclosing the yard will be 8 foot tall chain link with slats and a row of barbed wire at the top. A double wide swing gate will provide vehicle access to the yard in addition to a single man gate. The major equipment components will be mounted on concrete pads, and the yard will be gravel. The electric boilers will require a weatherproof metal panel enclosure of approximately 9-0 x 22-0, to be located adjacent to the building near the south west corner.

Mechanical, Electrical, & Plumbing Narrative

LEAF Engineers, working with McGranahanPBK, was hired to evaluate the current firing range HVAC system (exhaust and air handler) and make recommendations on a replacement system. The goal of the new system is to effectively remove airborne lead particles, primer reside, and smoke from the shooter’s breathing zone. This is accomplished with the new system by providing the correct exhaust rate to maintain the recommended NIOSH velocity of 75 FPM throughout the entire range. The new system needs to allow the space to operate under negative pressure to avoid contamination to adjacent space while providing heating and cooling. Additionally, the new equipment needs to be easily accessible for servicing equipment and replacing filters. The new system will also utilize a standalone DDC control system to control the equipment and monitor the filter status and air pressure of the space relative to the remainder of the building.

Agreement No. 2026-015 S (1)

The new HVAC equipment including heat pump chillers, air handler, exhaust fan, and electrical shall be located outside of the building on the ground behind the bullet trap.

Electrical service and distribution to the new equipment were also evaluated and required work is outlined in this document.

McGranahan PBK and LEAF Engineers visited the site, revised existing reports and building documentation as part of the assessment and recommendation process. Based on this information our team has developed the outline for the new system.

ABBREVIATIONS AND DEFINITIONS

CFM Cubic Feet Per Minute FPM Feet Per Minute HP Horsepower V Voltage P Phase of Electricity BTU British Thermal Unit MERV Minimum Efficiency Reporting Value (for air filters) HEPA High Efficiency Particulate Air (for air filters) CFD Computation Fluid Dynamics BACnet Building Automation and Control Network EPA Environmental Protection Agency NIOSH National Institute for Occupational Safety and Health OSHA Occupational Safety and Health Administration

MECHANICAL SYSTEMS

Existing Conditions The existing range HVAC system consists of the two-attic mounted ducted exhaust fans with filters, a gas furnace air handler with heat recovery, and unit heaters. The performance specifications of the current system are as follows:

Main Air Handler/Space Heating TAH-1 = 26,250 CFM of Supply Air, 1650 MBH gas heating, 25 HP, 230v/3p

Main Exhaust – Pulled from above bullet trap.

TEF-1A = 22,500 CFM, 25 HP, 230v/3p

Exhaust over range area TEF-1B = 7,500 CFM, 10 HP, 230v/3p

Range Information The range consists of the following dimensions:

Height at the firing line = 7’-6”

Height to the bottom of the soffit = 8’-1”

Agreement No. 2026-015 S (1)

Height at top of tapered ceiling = 10’-1”

Range width = 62’-0”

Current total exhaust = 30,000 CFM

Current Supply = 22,500 CFM

Current Pressure Relationship = neutral

Range Design Criteria Current range ventilation design standards follow EPA, NIOSH and OSHA standards. The following are the standards that apply:

EPA – Title 40 – Protection of Environmental Chapter 1 – Environmental Protection Agency Part 50 – National Primary and Secondary Ambient Air Quality Standards

NIOSH – HEW Publication No. (NIOSH) 76-130, dated December 1975, Titled “Lead Exposure Design Considerations for Indoor Firing Ranges”.

OSHA 29 CFR 1910.1025 and 1926.62

New Range Ventilation Design Criteria Designing the ventilation to the current standards and the dimensions of the range follows the following:

Height at the firing line = 7’-6”

Range width = 62’-0”

Maintain 75 FPM air velocity down range.

62’-0”w x 7’-6”h x 75 FPM = 34,875 CFM minimum required exhaust CFM

Providing a 10% safety factor and allowance to maintain a negative pressure in the building = 38,500 CFM required exhaust.

Supply to be 35,000 CFM

Building Pressure = 10% negative

HVAC Equipment Sizing The HVAC heating and cooling load calculations were performed using Carrier Hourly Analysis Program (HAP) v5.11.

Sizing loads were run with local ASHRAE weather data and interior design temperatures of minimum of 60 degrees in heating and 76 degrees in cooling. The minimum interior temperature was lowered to 60 degrees to allow for a reduction in heating equipment sizing while still maintaining a comfortable interior temperature. Typical days when the exterior temperature is in the low 40s or above, the interior temperature will be able to maintain an interior temperature of 68 degrees.

Agreement No. 2026-015 S (1)

The HVAC load calculations show that the following cooling and heating loads in British Thermal Units (BTU) are required for 35,000 CFM of conditioned supply air.

Cooling load = 451,933 BTU Sensible and Total Loads

Heat load = 1,410,935 BTU

HVAC Equipment Description and Location The HVAC exhaust system and air handling equipment shall be located to allow ease of service and access to filters for changeouts. The current air handler (TAH-1) is located inside the building and shall be removed, and the duct from the unit to the range shall be capped exiting the mechanical room. The existing supply duct system in the range space shall be removed and capped at the wall to Storage Room 111. The new hydronic air handling system shall be ground mounted on the exterior of the building behind the bullet trap. The air handling system shall supply 100% MERV-13 filtered outside air into the building using two new wall penetrations that allow the duct to access the building attic space. Once in the attic over the range the new duct will be run in the attic via two 44” diameter supply ducts running between the attic framing and be routed to the front of the range firing line. The ducts will feed a supply plenum that runs the 62’-0” width of the range located in the front/entrance area of the range. This supply plenum will use 64 Radial Diffusers each being 2’x4’ in face size supply 600 CFM each. The Radial Diffusers will allow for the air to be supplied in an even laminar airflow just before the firing line area allowing the required 75 FPM minimum to be maintained at the firing line and range area.

The existing attic mounted exhaust system, including the two fans and ductwork, shall be removed. A single new ground mounted fan with a filter box with a filter system consisting of a row of MERV-11 filters, followed by MERV- 13, filters, with final filters being HEPA Filters. The fan system including the filter bank will be ground mounted next to the new air handler at the exterior of the range behind the bullet trap. The exhaust fan system and filter plenum will be accessible for fan service and filter service and change out from the ground level. The exhaust fan will duct into the back of the range behind the bullet trap through a new wall penetration and will exhaust from behind the bullet trap. This design will shift all of the exhaust to be at the end of the range behind the bullet trap. The current design exhausts at three points in the range. This shift to exhausting all the air at the back of the range behind the bullet trap is critical as it allows the proper velocity of a minimum of 50 FPM to be maintained throughout the length of the range with the goal of providing an average airflow velocity of 75 FPM moving from the shooter downrange towards the bullet trap.

To provide the heating and cooling for the air handler (4) electric boilers along with a modular heat-pump heating only chiller system should be designed and mounted on the ground at the back and side of the range. A hydronic coil heat exchanger for heat recovery will be utilized to provide energy transfer from the exhaust stream to the new air handler. The hydronic loop will consist of a pump system between the heat pumps and the air handler designed to manufactures recommendations and shall utilize ground mounted in-line pumps. All piping, valves, and hydronic system accessories as required for a complete functioning system shall be required. As shown in figure 1.1 below

HVAC Control System A new standalone direct digital control system utilizing an open BACnet system shall be installed to provide complete control of the system as follows:

Air Handler – monitor and control space temperature and humidity, outside air temperature and humidity monitoring, and monitoring and control of air handler leaving air temperature and humidity. The filter loading on the air handler shall also be monitored with ability to control the air handler to maintain CFM upon loading. System shall alarm upon failure.

Agreement No. 2026-015 S (1)

Exhaust System – monitor start and stop, filter loading shall be monitored, with ability to maintain the exhaust fan CFM upon loading. System shall alarm upon failure.

Heat Pump Chillers and Pumps – monitor and control all start, stop, and ramp-up and down sequences as required to provide complete control of system. System shall alarm upon failure.

A complete system shall be provided along with control and monitoring access via a web interface. Commissioning of the control system shall be required and two 4-hour staff training sessions with video recording shall be included.

Range HVAC Performance Verification The new system will be designed to provide air flow and filtration to maintain EPA, NIOSH, and OSHA standards. Once the final design is complete, verification of air flow velocity throughout the range space shall be simulated using a Computational Fluid Dynamics (CFD) simulation model that takes into account all the new airflow CFM, distribution location and type, and the location and CFM of the exhaust system intakes. This verification process shall be used to confirm the design meets the design requirements of maintaining a minimum velocity of 50 FPM or greater with a maximum velocity not exceeding 120 FPM in the occupied range space. A report summarizing and documenting the results with any noted deficiencies will be required. Any deficiencies noted shall require the design team to modify the design and then have the model simulation re-ran until a design meeting the design air flow criteria requirements is met.

Once the new system is installed it shall be balanced to meet all the design criteria. An independent testing company and shall include air velocity testing and smoke testing at three equal distances across the width of the range and five distances down the firing line of the range. Vertical readings shall be at heights from the range floor of 1’-0”, 3’-0”, and 5’-0”. All locations will require a passing reading of 50 FPM or higher and not exceeding 120 FPM. If a failure reading is measured the system will need to be adjusted and then re-tested until the range receives a 100% passing score as described above.

figure 1.1- Mechanical Equipment

Agreement No. 2026-015 S (1)

PLUMBING SYSTEMS

Plumbing shall be provided as follows. Two condensate drywells will be provided, one at the air handler for condensate connection and one as the heat-pump chiller air for connection from the heat-pump chillers. Two cold water freeze proof hose bibs will be provided; one located at the heat-pump chillers and one at the air handler for washdown and cleaning.

ELECTRICAL SYSTEMS

Utility Service New electrical power system will require coordination with utility for providing a new service and new utility transformer serving the mechanical equipment. Installation of new medium voltage cabling and utility transformer are provided by the local utility.

Design for utility connection will be as shown in figure 1.2and listed below:

(2) 2” Conduit underground from the existing power vault to new 4x4x4 utility vault. There is one existing 2” conduit from existing power vault to utility connection.

(2) 2” Conduit underground from new 4x4x4 utility vault to new transformer vault.

New 8x8x6 transformer vault with lid for utility transformer.

8” bollards shall be provided for protection of transformer from vandalism or accidental damage. Bollards to be removable where required to meet the utility requirements for working clearances.

figure 1.2- Electrical Site Work

Agreement No. 2026-015 S (1)

Mechanical Equipment Electrical Power Distribution Design for power distribution connection will be as shown in figure 1.3 and listed below:

New 800 Amp exterior service rate distribution panel with 800-amp main breaker.

SCCR shall be determined at the design based on available fault current from the utility transformer.

Panel should be equipped with (1) 225/3, (1) 125/3, (1) 60/3, (1) 50/3 & (1) 200/3 breakers for feeds to mechanical equipment.

Provide 8’x6’x6” concrete pad with 4” high concrete pad for mounting of panel.

Provide (2) 2” Conduit underground from new 4x4x4 utility vault to new transformer vault.

Provide new 8x8x6 transformer vault with lid for utility transformer.

Provide (1) 200A, (2) 400A & (2) 60A 480V 3-Phase heavy duty exterior rated fused disconnects with fuses to serve the equipment.

Circuiting shall be XHHW 75℃ and sized as follows:

(1) Run of 3”C w/ (4) #4/0 CU & (1) #4 CU gnd.

(1) Run of 2”C w/ (4) #3/0 CU & (1) #6 CU gnd.

(1) Run of 1-1/2” C w/ (4) #1 CU & (1) #6 CU gnd.

(1) Run of 1”C w/ (4) #6 CU & (1) #10 gnd.

(1) Run of 1”C w/ (4) #8 CU & (1) #10 gnd.

Provide (2) code required weatherproof GFCI receptacles for service power at mechanical equipment from existing interior 120V panel M.

figure 1.3- Power Distribution

Agreement No. 2026-015 S (1)

Interior Electrical Remove and protect existing interior light fixtures serving the shooting range in ceiling area to be revised for new radial diffusers, reinstall the salvaged 2x4 LED fixtures in new ceiling grid.

Demolish existing exhaust fan power connections and remove all conduit and wire back to source that serves existing mechanical equipment indicated to be removed in mechanical scoping.

Provide new fire alarm notification and detection as required for new exterior mechanical equipment and in demolished ceiling area of firing range.

Conceptual Schedule

The primary consideration in development of an overall schedule for the ventilation upgrade is to minimize the amount of time that the firing range will be offline during construction. The proposed schedule on the following page has a single range closure, lasting approximately 14 weeks starting in late January , 2027. All work that will require the closure of the range- including hazardous material removal, demolition of existing mechanical systems, penetration through exterior walls, installation of new supply and exhaust ductwork, and commissioning and testing of new systems- will occur slightly more than halfway through the construction phase.

Prior to access to the firing range, the contractor will focus on equipment procurement and exterior construction such as equipment placement in the service yard and extending the primary electrical service. Related firing range improvements including building reroof, ceiling baffle upgrades, and target system replacement will be coordinated with primary construction activities and be implemented during the time that the range is offline.

ID Task Name Duration Start Finish

1 Cost and scope of work review by CJTC 6.4 wks Thu 12/4/25 Fri 1/16/26

2 A/E Selection 12 wks Mon 2/2/26 Mon 4/27/26

3 RFP for design firms advertized 0 wks Mon 2/2/26 Mon 2/2/26

4 Phase I SOQ process 4 wks Tue 2/3/26 Mon 3/2/26

5 Pre-selection meeting 0 wks Mon 2/9/26 Mon 2/9/26

6 SOQ due 0 wks Mon 3/2/26 Mon 3/2/26

7 Phase I scoring process 1.4 wks Tue 3/3/26 Wed 3/11/26

8 Design firms shortlisted 0 wks Wed 3/11/26 Wed 3/11/26

9 Phase II interview prep 1.4 wks Thu 3/12/26 Fri 3/20/26

10 Design firm interviews 0 wks Fri 3/20/26 Fri 3/20/26

11 Phase II scoring 2 wks Mon 3/23/26 Fri 4/3/26

12 Design firm selection 0 wks Fri 4/3/26 Fri 4/3/26

13 Fee proposal / contracts 3.2 wks Mon 4/6/26 Mon 4/27/26

14 Design & Permitting 15 wks Mon 4/27/26 Mon 8/10/26

15 Design team NTP 0 wks Mon 4/27/26 Mon 4/27/26

16 Preliminary design 5 wks Tue 4/28/26 Mon 6/1/26

17 Permit review 10 wks Tue 6/2/26 Mon 8/10/26

18 Finalize bid set 5 wks Tue 6/2/26 Mon 7/6/26

19 CJTC / DES document review 1 wk Tue 7/7/26 Mon 7/13/26

20 Bidding 8 wks Tue 7/14/26 Mon 9/7/26

21 Advertisement for bid 0 days Tue 7/14/26 Tue 7/14/26

22 Public bid period 4 wks Tue 7/14/26 Mon 8/10/26

23 Bid opening 0 days Mon 8/10/26 Mon 8/10/26

24 Bid analysis & contract preparation 4 wks Tue 8/11/26 Mon 9/7/26

25 Construction 34 wks Mon 9/7/26 Mon 5/3/27

26 Contractor issued NTP 0 wks Mon 9/7/26 Mon 9/7/26

27 Procurement & utility work, service yard 20 wks Tue 9/8/26 Mon 1/25/27

28 Abatement & demolition 4 wks Tue 1/26/27 Mon 2/22/27

29 Interior work, set mechanical in service yard 8 wks Tue 2/23/27 Mon 4/19/27

30 Reroof 2 wks Tue 4/6/27 Mon 4/19/27

31 Ceiling baffle upgrade 2 wks Tue 3/30/27 Mon 4/12/27

32 Target system replacement 3 wks Tue 3/30/27 Mon 4/19/27

33 Testing and commissioning 2 wks Tue 4/20/27 Mon 5/3/27

34 Range closed 0 wks Tue 1/26/27 Tue 1/26/27

35 Firing Range Off Line 14 wks Tue 1/26/27 Mon 5/3/27

36 Range open 0 wks Mon 5/3/27 Mon 5/3/27

A/E Selection

2/2

2/9

3/2

3/11

3/20

4/3

Design & Permitting

4/27

Bidding

7/14

8/10

Construction

9/7

1/26

Firing Range Off Line

5/3

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Conceptual Project Schedule CJTC Indoor Firing Range Ventlation Study

McGranahanPBK todd.olson Text Box todd.olson Text Box

A/E SELECTION PROCESS

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A/E SELECTION

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DESIGN & PERMITTING

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BIDDING

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CONSTRUCTION

DATE PREPARED PRICE LEVEL SHEET 1 OF 1

Design

11/28/2025 ESTIMATOR

Number Unit Unit Cost Total Unit Cost Total Unit Cost Total incl. O&P

1 LS $4,250.00 $4,250.00 $4,000.00 $4,000.00 $8,250.00 $8,250.00

7,198 SF $0.75 $5,398.50 $5.00 $35,990.00 $5.75 $41,388.50

7,198 SF $0.75 $5,398.50 $1.50 $10,797.00 $2.25 $16,195.50

1 LS $2,500.00 $2,500.00 $20,000.00 $20,000.00 $22,500.00 $22,500.00

12 EA $100.00 $1,200.00 $3,500.00 $42,000.00 $3,600.00 $43,200.00

5 EA $250.00 $1,250.00 $1,200.00 $6,000.00 $1,450.00 $7,250.00

1 LS $500.00 $500.00 $1,200.00 $1,200.00 $1,700.00 $1,700.00

1 LS $5,000.00 $5,000.00 $7,500.00 $7,500.00 $12,500.00 $12,500.00

1 LS $7,500.00 $7,500.00 $0.00 $0.00 $7,500.00 $7,500.00

$32,997.00 $127,487.00 $160,484.00 $16,048.40

Total Abatement Including Contingency $176,532.40

Dangerous Waste Disposal

Change pre-filters/maintain system

Range cleaning/decontamination

Jon A. Havelock, CSP, CHMM

Item Description Engineering Estimate

Includes full decontamination of ceiling plenum and demolition of plenum mechanical systems. Assumes 12 weeks of negative pressure enclosure maintenance.

Total Abatement Contingency (10%)

Quantity Equipment/Material Cost Labor Cost

PROJECT OR SITE

CJTC Firing Range

Burien, Washington

LOCATION

CONTRACT NUMBER

TABLE 2. PCB/LBP/MISC. ABATEMENT COST ESTIMATE 11/28/2025

Industrial hygiene post remediation verification Contractor mobilization/demobilization

Weekly Negative Air System Management Demolition (mechanical system)

Lead Contamination Remediation Work area preparation/negative pressure

Industrial hygiene exposure monitoring

Ceiling plenum decontamination

N://acitve/alljobs/9234.2/Cost Estimate.xls

Job Site

CJTC Shooting Range - TPO Overlay 19010 1st Ave S Burien WA 98148

WA State Criminal Justice Training Center 19010 1st Ave S Burien WA 98148

240379

(206) 321-0043 Doug Arns

Work Scope:

• Safely access the roof and install all necessary safety equipment needed for the duration of the project.

• Safely load all equipment and materials needed for project completion.

• Clean existing roof of all loose debris and haul away.

• Supply and install treated wood nailers around perimeter of building.

• Supply and install 3" Polyiso rigid insulation between existing metal roof ribs. (mechanically attached)

• Supply and install 1/2" HD Polyiso rigid insulation over entire roof. (mechanically attached)

• Supply and install new TPO cladded edge metal around perimeter of metal roof.

• Supply and install Carlisle 60 MIL TPO membrane over entire roof. (Rhinobond attached)

• Detail all penetrations using Carlisle detail membrane.

• Supply and install TPO pipe boot flashings over all existing plumbing pipe penetrations.

• Supply and install T-Joint covers over all T-joints.

• Clean up and haul away all work scope related debris from job site each day.

Roof Size: Approximately 7,800 sq. ft.

Fields Roof Service 2 year guarantee on workmanship.

Manufacturer's 20 year NDL Full System Warranty.

Note: The above work scope is based on paying prevailing wage. Any necessary additional work outside of work scope above will be based on time ($162.00 per man hour) and materials.

Exclusions: Permits & traffic management, WSST, engineering & design, skylights, siding, existing roof removal & disposal, asbestos, man-lift equipment, walkways, ventilation, gutters & downspouts, insulation & R-value, HVAC & supports, roof hatch, electrical conduits, ponding water, plumbing, fascia & barge board, paint, interior attic & debris protection, roof deck replacement or other carpentry work that may not be visible.

Job Number:

Client Signature & Date

X

Submitted to

Base Contract Amount:

Proposal

Proposed Contract is valid for (15) calendar days from

Jed Hagerman

Appendix A

Please note there is a 3% fee for all credit card transactions.

Ask about our financing options.

Base Contract does not include sales tax

03/25/2024

03/25/2024 todd.olson

PART B: BUILDING ROOF REPLACEMENT

AAA

Welding Co.

22610 - 85th PL. South - Kent, WA. 98031 - 253 -854-4701 fax 253-859-8934 - Email Jeff@aaaweldingcs.com

Date 9-5-2024 Revised Bid: 10/02/2024

Company CJTC

Attn: Jerome Acosta

Project Shooting Range Baffles

The following is a proposal to furnish shop drawings for approval, fabricate, shop prime and

Deliver F.O.B. Trucks jobsite the items listed below. Addendums

INCLUSIONS

64- Plates ¼ x 48” x 4-0’ with FB Ledger Lifting Rings and All Hardware

LOT 1 5/8 Unistrut Framing To support ¼” Baffle Plates

16- Plates ¼ x 24” x 4’-0 attached to Back Wall with ½” expansion Bolts

My Plan would consist in Fabricating all Plates in Shop and ready to install

All Unistrut Framing would be Cut and Installed on site as needed

The Install would Happen throughout multiple days so timing is very Important!

This Proposal if accepted will also include a Erection Plan Drawing for your approval

Excluded from our proposal are the following: Bollards, Cast Iron, Non-ferrous metals, Gauge

Metal, Simpson hardware, Field measurements and installation, Inspection costs, Epoxy anchors, Bolts to and thru wood, Stainless steel, Metal decking, Galvanizing [ unless noted], Engineering, Downspouts, Zinc-rich primer, Signposts, Finish paint, Material escalation from time of bid to time of approved shop drawings, Anything not on inclusion list, Wash. state sales tax.

Thank You

Jeffrey Hall todd.olson

PART C: CEILING BAFFLE UPGRADE

51 Woodyatt Drive, Unit 7 Brantford, ON, Canada N3R 7K3

+1-519-670-8000

TARGET SYSTEM QUOTATION March 12, 2025 Quote No: 250312-1

Quote #: 250312-1 Date: March 12, 2025 Prepared by: Peter Jennings (email: peter@calibertargets.com)

Prepared for: WASHINGTON STATE CRIMINAL JUSTICE TRAINING COMMISSION (CJTC) Reference Project: Indoor Range Retrofit Attention: Jerome Acosta (email: jerome.acosta@cjtc.wa.gov)

Included in quoted BASE price:

CR-2TL Target Retrieval System

- Fifteen (15) CR-2TL Target Carriers (turning target, on-board target lighting)

- Fifteen (15) CR-2TL Drive Units

- Fifteen (15) Sight Light Assemblies (mounts to track in front of drive units)

- Fifteen (15) CR-2TL Local Control Screens (color touchscreen, target positioning)

- Fifteen (15) CR-2TL Track Assemblies (for up to 25 YARDS* firing distance)

*Actual firing distance will be determined by available space in range

- Track brackets for suspension of track (structure/supports by others)

- All required low voltage control cables, etc for connecting control screens, drive units

- One (1) CR-2TL Master Control Screen (color touchscreen, global lane control, programming)

- Track brackets for suspension of track (structure/supports by others)

- All required low voltage control cables, etc for connecting control screens, drive units, master

- Disassembly of existing target retrieval systems and removal from range area**

**Removal from site and final disposal of all existing equipment to be done by customer

- Complete installation*** of Caliber target retrieval systems

***All labor required for installation provided by Caliber

- On-site system commissioning and training in system operation/maintenance

- FIVE (5) YEAR limited warranty

- Shipping to BURIEN, WA

Total quoted BASE price: $213,088.00 (USD)

OPTION A ….. eRange Wireless Tablet ….. $2,472.00 (USD)

- One (1) CR-2TL Mobile Access Controller for Master Control (with wireless access point)

See attached TERMS & CONDITIONS and LIMITED WARRANTY pages for more information.

todd.olson

PART D: TARGET SYSTEM REPLACEMENT

Agreement No. 2026-015 S (1)

APPENDIX

Documents

SITE PHOTOS - EXISTING CONDITIONS

HAZARDOUS BUILDING MATERIALS SURVEY

MED-TOX NORTHWEST, DATED 11/06/25

AIR QUALITY / VENTILATION STUDIES

INDOOR FIRING RANGE VENTILATION EVALUATION, CAREYS: 11/13/23

FIRING RANGE ASSESSMENT, UW FRCG: 06/21/23

AIR SYSTEM SIZING SUMMARY, UPDATED 12/16/25

MECHANICAL EQUIPMENT CUT SHEETS

Agreement No. 2026-015 S (1)

EXISTING DUCTWORK AND EQUIPMENT IN INTERSTITIAL SPACE TO BE DEMO’D

todd.olson

APPENDIX: SITE PHOTOS - EXISTING CONDITIONS

Agreement No. 2026-015 S (1)

NORTH SOUTH

EAST

Agreement No. 2026-015 S (1)

LOOKING EAST GUTTER DETAIL

LOOKING EAST

Agreement No. 2026-015 S (1)

LIGHTING FIXTURE AT BAFFLES LOOKING WEST

25 YARD FIRING LINE

Agreement No. 2026-015 S (1)

BACK WALL OF RANGE (WEST) BACK WALL OF RANGE (WEST)

LOOKING DOWN RANGE (EAST)

Carey’s Small Arms Range Ventilation

8201 West 183rd St., Unit B, Tinley Park, IL 60487 Phone: 708-532-2449

INDOOR FIRING RANGE

VENTILATION SYSTEM EVALUATION

Washington State Criminal Justice Training Commission 19010 1st Ave S.

Burien, WA 98148

Attn: Steve Hauck

Date: 11/13/2023 todd.olson

APPENDIX: AIR QUALITY / VENTILATION STUDIES

Phone: 708-532-2449

Range Ventilation Standards

Carey's Heating & Air Conditioning, Inc. has been the leader in range ventilation since 1995. In that time

Carey’s has designed and built nearly 1000 indoor range ventilation systems worldwide.

Ventilation in an indoor firing range is crucial to the health, safety, and usability of the building and range.

There are three main purposes for properly ventilating a small arms range.

1. The primary purpose for the ventilation of an indoor firing range is to remove contaminates created during the firing of a weapon from the respiratory zone of the occupants. Exploding primers containing lead styphnate and friction from the lead slug against the gun barrel create airborne lead. There is also carbon monoxide as well as other contaminates created during the firing of a weapon.

2. The second and equally important reason for the properly designed and installed ventilation and control system is to keep the range at a negative pressure to the surrounding base building space. Contaminates created on a small arms range need to be contained in the range space. This will prevent the ingestion of contaminate as well as keeping the surfaces free of contaminates in non-range spaces of the base building.

3. The final purpose is to remove the smoke from the range to properly see the targets downrange.

The following is a summary of the EPA, NIOSH and OSHA standards as they apply to small arms range ventilation:

EPA:

TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY

PART 50--NATIONAL PRIMARY AND SECONDARYAMBIENT AIR QUALITY STANDARDS--Table of

Contents Sec. 50.12 National primary and secondary ambient air quality standards for lead and its compounds, measured as elemental lead by a reference method based on appendix G to this part, or by an equivalent method, are: 1.5 micrograms per cubic meter, maximum arithmetic mean averaged over a calendar quarter. (Secs. 109, 301(a) Clean Air Act as amended (42 U.S.C. 7409,7601(a)))

NIOSH and OSHA:

Established by NIOSH, the performance intent for firing range ventilation systems shall meet all the requirements outlined as recommendations and design considerations in HEW publication no. (NIOSH) 76-

130, dated December 1975, entitled "Lead ExposureDesign Considerations for Indoor Firing Ranges". This design standard prefers an airflow velocity of 75 feet per minute average on the empty range. This design has consistently provided for the compliance within the established federal standards for airborne inorganic lead concentration limits. When properly executed, lead concentrations are consistently maintained below the action level of 30 micrograms per cubic meter (30ug/m3) in an area where the limit shall not exceed 50 micrograms of lead per cubic meter (50ug/m3) of air over a time weighted average of eight hours as measured at the respiration zone of the shooters and the range officer when firing from the firing booths per

OSHA 29 CFR. 1910.1025 and1926.62.

Phone: 708-532-2449

Washington State Criminal Justice Training Commission

Evaluation Performed By: Mike O’Connor on 11/2/2023 Engineering Review By: Kristofer Williams & Brian Wright

General Site Review Notes:

• The range is 62’ wide

• Rubber bullet trap

• The range is used as a tactical dynamic range – moving downrange & shooting

• Height at firing line is 7’6”

• Height to bottom of soffit is 8’1”

• Distance from rear wall to firing line is 21’. Backwall to soffit is 14’

• Height to top of tapered ceiling is 121”

• The Range ventilation system is a heating only purge type system with 100% outside air, hot water heating, and exhaust energy recovery loop.

• Range supply air distribution is via grilles located in the soffit

• Range HVAC is a purge – 100% outside air system with exhaust & heat recovery coils.

• Range exhaust fans (TEF-1A & TEF-1B) are located in the attic above the range ceiling

• TEF-1A sized for 22,500 CFM, 25 HP, 230v 3ø

• TEF-1A capable of 3.08” static pressure

• TEF-1A has 16 filters: (24x24x2) (24x24x12 HEPA’s)

• TEF-1B is sized for 7,500 CFM, 10 HP, 230v 3ø

• TEF-1B capable of 2.56” static pressure

• TEF-1B has 6 filters: (24x24x2) & (24x24x12 HEPA’s)

• Heat recovery coils on each range exhaust fan

• Range supply unit (TAH-1) is located in the mechanical room – behind storage room

• TAH-1 is sized for 30,000 CFM, 30HP, 230v 3ø

• TAH-1 is capable of 3.24” static pressure

• Range HVAC start/stop is on a timer – that runs for 6 hours.

• Range has multiple doors – including a roll up door

• All ductwork in the attic space is round duct

• Supply duct at wall of boiler room in storage is 42” tall & 56” wide

• Storage room is 16’ deep

• Supply duct at wall in storage – back wall of range is 25” tall & 56” wide

• Range HVAC control system is a Alerton control system

• Controls are showing filter status, however, user does not know what it means “active/inactive”

• Controls are reading the building static pressure.

• Exhaust fans are running 100% all the time.

• Smoke test showed smoke stagnating and rolling back behind the shooters. Took several minutes to clear smoke in the center of the range.

• Miscellaneous items were stored in the range around and behind the firing line

Phone: 708-532-2449

AIRFLOW TESTING:

Airflow velocity readings were conducted at the firing line using a ShortRidge Velgrid airflow meter. Measurements were taken in the center of each lane at 5', 3' and 1' off the floor (standing, kneeling, prone). See below results: NOTE: All readings are Feet Per Minute (FPM). Readings in red font failed and do not meet the criteria.

Acceptable Readings:

▪ No single reading under 50 FPM or over 120 FPM

▪ Each lane average between 60 FPM and 90 FPM

▪ Range average between 71 FPM and 79 FPM

Lane L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15

Height

5' 86 178 238 123 284 232 125 193 113 167 77 89 201 257 181

3' -98 -34 -81 52 172 151 9 115 53 95 66 -13 74 107 86

1' -81 -125 -107 -63 12 -11 14 39 -4 2 47 -31 -19 44 -3

Lane Average

-31 6 17 37 156 124 49 116 54 88 63 15 86 136 88

Range Average 67 FPM

Criteria Airflow Velocity Smoke Test

Individual readings Fail Fail

Lane averages Fail Fail

Range Average Fail Fail

Phone: 708-532-2449

Summary:

• Per the airflow results above, the current range ventilation system does not meet NIOSH suggested design criteria of an average of 75 FPM (+/- 5%) at the firing line. This design has been proven to guarantee lead exposure levels below OSHA allowable limits.

▪ Recommendation: New system designed per NIOSH criteria

• Based on the airflow readings taken during testing, the airflow was not laminar and was highly turbulent with multiple negative readings

▪ Recommendation: Laminar airflow is crucial in an indoor firing range.

We recommend a new system designed to include radial diffusers & plenums - as they have proven to provide laminar airflow at the firing line on several hundred range ventilation systems.

• Both the supply & exhaust units are undersized (CFM) compared to the NIOSH suggested design criteria of Supply CFM 62’ wide X 7.6” height at firing line X 75 FPM = 35,340 CFM.

Exhaust should be sized for approximately 10% more than supply 38,874 CFM.

▪ Recommendation: New units sized based on NIOSH design criteria.

• The current system is not monitoring the shooting range pressure and is not showing exhaust filter pressures.

▪ Recommendation: We recommend a stand-alone Firing Range Direct Digital Controls (DDC) system. This DDC system should monitor the system operation and alarm if the range is ever operating in an unsafe mode. The DDC system should provide maintenance indicators, filter pressures, range pressure, and alarm messages for troubleshooting.

• Miscellaneous items were stored in and around the firing line area. These items can impact airflow and cause turbulence.

▪ Recommendation: If possible, remove these items to prevent airflow turbulence.

Phone: 708-532-2449

Conclusion:

In order to guarantee and be in compliance with current NIOSH, OSHA & EPA standards, we would suggest replacing the system with a system designed in accordance to these standards and is proven to guarantee system performance and health & safety of the occupants of the space going forward.

Please let us know what questions you have & thank you for the opportunity.

Respectfully, Brian Wright

Carey's Small Arms Range Ventilation

ADDRESS CONTACT

4225 Roosevelt Way, NE (206) 543-9711 Suite 100 frcg@uw.edu Seattle, WA 98105 deohs.washington.edu/frcg

June 21, 2023

Chris Williams Firearms Program Manager Criminal Justice Training Commission 19010 1st Avenue South Burien, WA 98148

RE: Firing Range Assessment Results (FRCG # 23.15)

Dear Chris

At your request, the Field Research and Consultation Group (FRCG) of the University of Washington’s Department of Environmental Health assessed firing staff airborne noise and lead exposures and surface lead levels in the CJTC firing range. The assessment results are presented in the attached report and are summarized as follows.

Airborne lead exposures were very high; the Instructor, Lead Instructor and Recruit #2 all had 8-hour time weighted average lead exposures that exceeded the DOSH Action Level of 30 µg/m3. Accordingly, the CJTC should plan to meet the requirements for exceeding the DOSH Action Level (30 µg/m3) which includes bi-annual air monitoring and bi-annual blood lead monitoring for workers whose lead exposure is likely to exceed the Action Level for 30 or more days in a year. The high lead exposures may have been a result of using ammunition that contains lead in the firing pin and that may not be adequately jacketed to prevent lead aerosolization when the bullet leaves the gun barrel.

The monitoring results presented in this report reflect conditions at the time of our evaluation. If production processes, raw materials, or production levels change, we encourage you to re-assess the exposures in your workplace. If you have questions about our findings, please feel free to call at your earliest convenience.

Sincerely, Gerry Croteau, MS, CIH Research Industrial Hygienist

Enc.

todd.olson

APPENDIX: AIR QUALITY / VENTILATION STUDIES

FRCG#: 15-23

6/16/2023

Introduction

The Washington State Criminal Justice Training Commission (CJTC) has primary responsibility for training law enforcement officers that will be working in Washington municipalities. Accordingly, CJTC provides an array of criminal justice training programs at its campus located in Burien, Washington. To this end, the Commission operates and maintains an indoor firing range (IFR), which is an integral component of the firearm training courses. In addition to the firing range, the facility also has a classroom, administrative office, gun cleaning room, training room (upstairs) and restrooms. A staff of three range officers oversee the firearm instruction and training activities, with additional training professionals provided by an outside contractor.

The indoor firing range, which has 15 shooting lanes, sees a considerable amount of use with six to eight hours of active instruction on a daily basis, five days per week. The range uses a push-pull ventilation system to sweep the aerosol generated during firearm discharge away from the shooter, down range.

Supply air is introduced behind the shooter through a plenum located near the ceiling that runs the width of the range. The sweep air is subsequently exhausted through ceiling mounted ducts running the width of the range near the target area. The ventilation system was recently renovated and the exhaust air is now filtered prior to being released to the outdoor atmosphere.

In the past, clean fire ammunition manufactured by Speer-Lawman has been used in the range. This ammunition doesn’t use lead in the primer, and the bullet, which is lead, is covered with a copper jacket designed to eliminate the aerosolization of lead during firing. Lead is however aerosolized on impact at the bullet trap. Until it was recently replaced, the bullet trap was a steel plate wedge resulting in considerable lead aerosolization upon impact of the bullets. High lead levels (120 µg/m3) found at the trap in prior monitoring (1/18/2018), suggest that much of the airborne and surface deposited lead in the facility was from this source. The steel plate wedge trap was recently replaced with a shredded rubber tire bullet trap which may reduce the amount of lead aerosolized when bullets impact the trap.

The range floor is cleaned using a self-propelled wet-vac and a smaller, manually-propelled wet-vac device for difficult to access areas. As the operator drives the device around the facility, water is applied to the floor, followed by a rotating brush; the applied water is subsequently vacuumed from the floor (by the vehicle). In the past, the range floor was cleaned daily, a 20 minute process, at the beginning of the day prior to range use. At the time of monitoring the range floor was no longer being cleaned on a daily basis, although it was cleaned the evening prior to monitoring on May 10. After each training session in the firing range, students and/or instructors push a device that picks the casings off the floor which eliminates hand contact with the potentially lead contaminated casings. In the past, “sticky mats”, which remove debris from shoes when stepped on, were placed at the range entrance to reduce the transfer of lead from the range to other building areas. Sticky mats were not in use on the day monitoring was conducted. Students are given orientation at the beginning of the firearms instruction that presents information of the dangers of lead exposure, how exposure can occur and practices for preventing exposure.

The Commission has requested that the University of Washington’s Field Research & Consultation Group (Field Group) assess airborne lead exposures and surface lead levels. The most recent assessment conducted on May 10, 2023, is a follow-up to assessments conducted in 2014 and 2016, 2017, 2018, 2019 and 2021.

6/16/2023

Methodology

Personal air monitoring was conducted for two firing range instructors and three police recruits on May 10, 2023. Personal sampling pumps were used to collect air samples at a rate of 2.0 liters per minute onto a mixed cellulose ester filter, placed within each worker’s breathing zone on their left lapel. Surface wipe samples were collected according to NIOSH Method 9100, using wipe sample media (Ghostwipes™) that meets the ASTM E1792 Guideline. A 100 square centimeter area was delineated using a cardboard template and wiped using an S-pattern. At each location, a new wipe was used. After the surface sample was obtained, the wipe was carefully folded to minimize sample loss and then placed in a labeled, plastic sample bag. Air and surface wipe samples were hand delivered to the UW’s Environmental Health Laboratory and subsequently analyzed for lead using US EPA Method 6020A.

The actual analytical testing results as received from the lab are presented in Appendix A.

Time weighted average (TWA) exposures were calculated based on two different exposure assumptions.

An actual 8-hour TWA was calculated assuming that lead exposure for the monitored individuals was limited to the time they were monitored and that there was no additional lead exposure for the remaining duration of their eight hour workday. A potential 8-hour time weighted average (TWA) exposure was also calculated assuming the monitored individual’s exposure was maintained for a seven hour period.

The potential 8-hour TWA represents a worst case, albeit potentially realistic, scenario.

Full shift personal noise exposure levels were determined on May 10 for two instructors and three police recruits involved in live fire training exercises using 3M Edge noise dosimeters. Each dosimeter was programmed to measure noise according to the Washington Division of Occupational Safety and Health (DOSH) hearing conservation (HC) regulation. The hearing conservation standard uses the following dosimeter parameters: 90 dB(A) criterion level, 5 dB exchange rate, 80 dB(A) threshold, and slow response. The noise dosimeters were calibrated pre and post monitoring. Personal noise measurements were downloaded from the dosimeters and analyzed using QuestSuite software.

The IFR ventilation system was assessed using an Alnor hot wire anemometer to measure air velocity at various locations. In addition, a microfrogger, a hand held device that generates a visible aerosol, was used to qualitatively assess the level of turbulence in air passing through the range.

Monitoring Results

Noise Monitoring Results

Individual noise exposure results, including monitoring times, work task, and 8-hr TWAs for the DOSH Hearing Loss Prevention (HLP) regulation levels are presented in Table 1. Overall, noise exposures were very high on May 10, 2023 with all five monitored workers having a time weighted average noise exposure in excess of both the 85 dB(A) DOSH Hearing Loss Prevention and 90 dB(A) Noise Control standards. Instructor 1, who was operating the target system, was located further away from the active firing drills than Instructor 2, who was actively involved in the training exercises. Accordingly, Instructor 2’s noise exposure was more than 10 dB(A) higher than that of Instructor 1. Police recruits, who were discharging their firearms in the training drills, had noise exposures that were about five dB(A) higher than that of Instructor 2.