PERMIT REVIEW SUMMARY

Permit Writer:	Brad Luke 	Date:	July 29, 2026

Company Name:	Milwaukee Electric Tool Corporation, Milwaukee Tool-Grenada
Facility Location:	2817 American Way
Grenada, MS 38901

Source Number:	0960-00044
County: 		Grenada

FACILITY DESCRIPTION

Milwaukee Tool-Grenada is an existing industrial facility that manufactures power-driven handtools such as drills and drilling tools, circular saws, saw blades including those for power sawing machines, and other electric power tools. The facility’s SIC Code is 3546 (Power-Driven Handtools), additionally the facility falls under the NAICS codes 333991 (Power-Driven Handtool Manufacturing) and 332213 (Saw Blade and Handsaw Manufacturing). Milwaukee Tools engages in the stamping of blanks, hot and cold forming, welding of caps and seams, heat treatment, powder coating of components, curing of components after powder coating, burning off powder coat for components, pad printing of logos onto components, and packaging operations. The facility currently operates a powder coat line in addition to two (2) 1.0 million British Thermal Unit per hour (MMBTU/hour) natural gas-fired ovens for curing blades following powder coat application (Emission Point AB-001) and a 0.875 MMBTU/hour burn-off oven for powder coat removal from rack system components (Emission Point AB-002). The facility also currently operates a 158 horsepower (HP) diesel-fired emergency generator engine with a  heat input capacity of 0.137 MMBTU/hour (Emission Point AD-001). Other sources of emissions operated at the existing facility considered here are fifteen (15) natural gas-fired space heaters each with a rated capacity of 0.332 MMBTU/hour. The facility has site wide welding operations that do not consume welding electrodes and consist of tungsten inert gas welding (TIG) and resistance welding, which produce very minor emissions of particulate matter (PM). Before the proposed construction, the facility’s emissions classified it as a true minor source of emissions for both Title V and Prevention of Significant Deterioration (PSD), and as an area source of Hazardous Air Pollutants (HAPs). This construction permit will incorporate the existing units into the permit as well as the proposed equipment described below.

PROJECT/PERMIT ACTION DESCRIPTION

On March 6, 2026, an application for a permit to construct was received from Milwaukee Electric Tool Corporation located in Grenada, MS. The application proposes installing two (2) electrostatic paint lines and two (2) natural gas-fired cure ovens at the existing facility. The two (2) electrostatic paint lines (Emission Point AA-001) are SAMES Kremlin model manufactured by Systems Technology Inc. and will use liquid paint to paint hole saw blades. The paint lines will operate with a SprayStop E-Pak 950 fabric filter manufactured by Koch Filter. The two (2) natural gas-fired paint ovens manufactured by Maxon or Wayne Combustion Systems are each rated 1.0 MMBTU/hour (Emission Point AB-003) and will be used for curing blades following paint application. The following table includes the emission points to be incorporated into the permit:

Emission 
Point	Description	
AA-001	Two (2) electrostatic paint lines equipped with fabric filters	
AB-001	Two (2) Natural Gas-Fired Ovens for Curing Blades Following Powder Coat Application [Individual Heat Input Capacity: 1.0 MMBTU/Hour]	
AB-002	Natural Gas-Fired Burn-Off Oven for Powder Coat Removal from Rack System Components equipped with Integrated Afterburner [Heat Input Capacity: 0.875 MMBTU/Hour]	
AB-003	Two (2) Natural Gas-Fired Ovens for Curing Blades Following Paint Application [Individual Heat Input Capacity: 1.0 MMBTU/Hour]	
AD-001	158 HP Diesel-Fired Emergency Generator [Heat Input Capacity: 0.137 MMBTU/Hour]	

EMISSION SUMMARY

The maximum uncontrolled facility-wide emissions were calculated under a scenario in which most operations were performed over a period of 8,760 hours in a calendar year using emission factors from the paints that will be used at the facility. Based on the calculations, with the inclusion of the proposed emission points, the facility’s maximum uncontrolled emissions in tons per year (tpy) have the potential to exceed the Title V major source thresholds of 100 tpy for PM under 10 microns (PM10), PM under 2.5 microns (PM2.5) and volatile organic compounds (VOCs).  Additionally, hazardous air pollutant (HAP) major source thresholds of 10 tpy for any individual HAPs and 25 tpy for total combined HAPs, and the Prevention of Significant Deterioration (PSD) major source threshold of 250 tpy for VOCs.

Table 1: Maximum Facility-Wide Emissions (tpy)
Emission Point	PM	PM10	PM2.5	SO2	NOX	CO	VOCs	Ind HAP*	Total HAPs	
AB-001 (Existing Curing Ovens)	0.005	0.005	0.004	0.005	0.88	0.74	0.05	-	0.0158	
AB-002 (Existing Burn-off Oven)	0.352	0.352	0.352	0.002	0.38	0.44	0.02	-	0.0000	
AD-001 (Emergency Generator)	0.02	0.02	0.02	0.02	0.25	0.05	0.02	-	0.0000	
Insignificant Activities	0.02	0.02	0.02	0.01	2.18	1.83	2.07	0.0183	0.0576	
AB-003 (Proposed Ovens)	0.0046	0.00	0.00	0.01	0.88	0.74	0.05	-	0.0158	
AA-001 (Proposed Paint Lines)	221.20	221.20	221.20	-	-	-	378.62	53.80	53.6150	
Maximum Uncontrolled Emissions	
221.60	
221.60	
221.59	
0.04	
4.57	
3.80	
380.83	
53.82	
57.92	
Potential Facility Wide Limitations	-	-	-	-	-	-	245.0	-	-	
Proposed Paint Line (AA-001) Limitations	-	-	-	-	-	-	-	9.0	24.0	
* Maximum reported individual HAP at the facility is “glycol ethers”

Therefore, to become a Title V major source and avoid being classified as a PSD major source and a HAP major source, Milwaukee Electric Tools will maintain facility-wide emission limitations for VOCs of no more than 245.0 tpy based on a rolling 12-month period, and electrostatic paint line specific emission limitations for individual HAPs of 9.0 tpy based on a rolling 12-month period, and for total HAPs of 24.0 tpy based on a rolling 12-month period. By maintaining these VOC and HAP related emission limitations, Milwaukee Electric Tools will continue being considered an area source of HAPs and a moderate stationary PSD source avoiding classification as a PSD major source.
APPLICABLE/PROPOSED PERMIT LIMITATIONS

Maximum uncontrolled emissions for the facility exceed the Title V major source thresholds of  100 tpy for PM10, PM2.5 and VOCs, and exceed the HAP major source thresholds of 10 tpy for any individual HAPs and 25 tpy for total combined HAPs. The maximum uncontrolled emissions show that even with proposed emission limitations the facility will be a Title V major stationary source for PM10, PM2.5, and VOCs. However, to avoid becoming a PSD major source, Milwaukee Tools proposes to comply with facility wide emission limitations for VOCs, and to avoid becoming a major source of HAPs emissions Milwaukee Tools proposes to comply with electrostatic paint line specific emission limitations for individual HAP and total combined HAPs. For VOCs, the facility shall limit emissions to 245.0 tpy. For any individual HAP, Milwaukee Tools shall limit emissions from the electrostatic paint lines to 9.0 tpy. For total combined HAPs, the Milwaukee Tools shall limit emissions from the electrostatic paint lines to 24.0 tpy. 

Additionally, for the entire electrostatic paint lines the permittee shall compliance with the HAP limitations by monitoring, recording, and reporting for each paint or surface coating material used the following: (a) Quantity used (in gallons), (b) the percentage of VOCs by weight, (c) the percentage of each HAP by weight, and (d) the density in (lb/gal). The permittee shall use these parameters to determine VOC and HAP emissions on a monthly basis and for each consecutive 12-month period on a rolling basis.

NSPS APPLICABILITY

40 CFR Part 60, Subpart IIII — Standards of Performance for Stationary Compression Ignition (CI) Internal Combustion Engines: Milwaukee Tools operates a 158 HP diesel-fired emergency generator compression ignition (CI) engine with a rated heat capacity of 0.137 MMBTU/hour that was manufactured on May 8, 2023. The emergency generator engine was constructed after the applicable date of April 1, 2006, and therefore Milwaukee Tools are subject to the requirements of Subpart IIII for the diesel-fired emergency generator CI engine. Subpart IIII requires the engine to be certified to meet certain standards for PM, non-methane hydrocarbons + NOx, and CO as well as smoke opacity standards during different periods of operation. Also, the engine must use diesel fuel that meets given standards and may only be operated up to 100 hours per year for maintenance, readiness testing, and other non-emergency use as monitored through a non-resettable hour meter.

40 CFR Part 60, Subpart JJJJ — Standards of Performance for Stationary Spark Ignition Internal Combustion Engines: Milwaukee Tools operates a 158 HP diesel-fired emergency generator compression ignition (CI) engine with a rated heat capacity of 0.137 MMBTU/hour that was manufactured on May 8, 2023. Given that the emergency generator engine is not a spark ignition (SI) engine but instead is a CI engine, Milwaukee tools are not subject to the requirements of Subpart JJJJ for a diesel-fired emergency generator SI engine. 

MACT APPLICABILITY

40 CFR Part 63, Subpart ZZZZ — National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines: Milwaukee Tools operates a 158 HP diesel-fired emergency generator engine with a rated heat capacity of 0.137 MMBTU/hour that was manufactured on May 8, 2023. Given the engine is a new stationary reciprocating internal combustion engine (RICE) located at an area source of HAPs it is subject to the requirements Subpart ZZZZ but shall meet the requirements of the subpart by meeting the requirements 40 CFR Part 60, Subpart IIII, and Milwaukee Tools is subject to no further requirements of Subpart ZZZZ.

40 CFR Part 63, Subpart MMMM — National Emission Standards for Hazardous Air Pollutants for Surface Coating of Miscellaneous Metal Parts and Products: While Milwaukee Tools performs surface coating operations on metal components that could be classified as miscellaneous metal parts and products, the facility is classified as an area source of HAP emissions. Therefore, since Subpart MMMM applies to major sources of HAPs, Milwaukee Tools are not subject to the requirements of Subpart MMMM.

40 CFR Part 63, Subpart HHHHHH — National Emission Standards for Hazardous Air Pollutants: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources: While Milwaukee Tools performs surface coating operations and is classified as an area source of HAP emissions, presented environmental data sheets show the facility does not use coatings that contain the target HAPs of chromium, lead, manganese, nickel, and cadmium. Therefore, Milwaukee Tools are not subject to the requirements of Subpart HHHHHH.

40 CFR Part 63, Subpart XXXXXX — National Emission Standards for Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and Finishing Source Categories: While Milwaukee Tools performs surface coating operations on fabricated metal products and is classified as an area source of HAP emissions, presented environmental data sheets show the facility does not use coatings that contain the target metal fabrication or finishing metal HAP (MFHAP) of cadmium, chromium, lead, or nickel in amounts greater than or equal to 0.1 percent (%) by weight (of the metal) or manganese in amounts greater than or equal to 1.0 percent (%) by weight (of the metal). Therefore, Milwaukee Tools is not subject to the requirements of Subpart XXXXXX.

PUBLIC PARTICIPATION

The 30-day public notice period began on July 29, 2026, when the notice was posted on MDEQ’s website and ends August 31, 2026.