DRAFT PERMIT REVIEW SUMMARY

Permit Writer:	Thomas Parker	Date:	July 28, 2025

Company Name:	MacroSource LLC, Greenville North

Facility Location:	1699 Harbor Front Road

Source Number:	2800-00140

County: 		Washington 

FACILITY DESCRIPTION

MacroSource LLC, Greenville North (MacroSource), owns and operates an existing dry and liquid bulk fertilizer storage and handling facility (SIC Code: 5191). The facility receives dry fertilizer by barge and, through a series of conveyors, unloaders, and hoppers, transfers the fertilizer to the fertilizer storage warehouse. From there, the fertilizer can be loaded to trucks for transport off site. MacroSource also operates an auger tunnel to an enclosed system equipped with conditioners consisting of a shaft that moves from side to side and spins where coatings/additives are sprayed on dry urea. These additives/coatings may contain VOCs and/or HAPs. The emission points for the facility are shown in the table below.

Emission Point	Description	
AA-001	Barge to Clamshell Unloader	
AA-002	Clamshell Unloader to Hopper	
AA-003	Hopper to 70-foot Conveyor	
AA-004	70-foot Conveyor to 300-foot Conveyor	
AA-005	300-foot Conveyor to 200-foot Conveyor	
AA-006	200-foot Conveyor to One-Way House Belt; One-Way House Belt to Reversing Shuttle Conveyor; Reversing Shuttle Conveyor to Storage Bins; and Storage Bins to Hopper 1, Hopper 3, and Blend Hopper	
AA-008	Blend Hopper/Bucket Elevator to Truck	
AA-009	Fertilizer Coating in Auger Tunnel	
AA-010	North Hopper to Truck Loadout	
AA-011	South Hopper to Truck Loadout	
AA-012	Drop from Truck to Truckpit Leg	
AA-013	Truckpit Leg to 200-foot Conveyor	

PROJECT/PERMIT ACTION DESCRIPTION

MacroSource has applied for the reissuance of their Synthetic Minor Operating Permit (SMOP) without any modifications. This permitting action will not affect any of the permit conditions.

EMISSION SUMMARY

Facility-Wide Potential Emissions Summary
Pollutant	Potential Emissions
(tons/yr)	Allowable Emissions
(tons/yr)	
PM	79.65	-	
PM10	57.23	-	
PM2.5	38.59	-	
SO2	0.00	-	
NOX	0.00	-	
CO	0.00	-	
Total VOC	988.72	99.0	
Ethylene Glycol	197.92	9.0	
Total HAP	284.01	24.0	

MacroSource will maintain Synthetic Minor status as an area source staying below the Title V thresholds by limiting Volatile Organic Compound (VOC) emissions to 99.0 tons/yr, Individual Hazardous Air Pollutant (HAP) emissions to 9.0 tons/yr, and Total HAP emissions to 24.0 tons/yr. The permit also limits the amount of HAP/VOC content of coatings/additives used at the site. Maintaining records of each coating and/or additive containing VOC and/or HAP at the site, the total gallons of each used on a monthly basis, VOC and/or HAP content of the material used, and the density of the coating/additive will ensure compliance.

APPLICABLE/PROPOSED PERMIT LIMITATIONS

•	11 Miss. Admin. Code Pt. 2, R. 2.2.B(10).
o	VOC emissions limited to 99.0 tons/year
o	Total HAP emissions limited to 24.0 tons/year
o	Individual HAP emissions limited to 9.0 tons/year  

•	11 Miss. Admin. Code Pt. 2, R. 2.2.B(10).
o	Coating/Additives ≤ 20,000 gallons/year
o	Coating/Additives VOC content ≤ 65% by weight
o	Coating/Additives Individual HAP content ≤ 6% by weight
o	Coating/Additives Total HAP content ≤ 15% by weight
o	Coating/Additives Density ≤ 15 lb/gal

•	11 Miss. Admin. Code Pt. 2, R. 1.3.F(1).
o	Particulate and ash limited by the relationship E = 4.1 × p0.67, where “E” is the emission rate in pounds per hour and “p” is the process weight input rate in tons per hour

NSPS APPLICABILITY

No applicable New Source Performance Standards (NSPS) have been identified.

MACT APPLICABILITY

No applicable Maximum Achievable Control Technology (MACT) have been identified.

PUBLIC PARTICIPATION

The 30-day public notice period began on September 3, 2025, when the notice was posted on MDEQ’s website and ends on October 3, 2025.

RECOMMENDATION

The staff has preliminarily decided to recommend issuance of the permit to the Mississippi Environmental Quality Permit Board as shown in the draft permit. However, the staff recommendation to the Board will be made only after a thorough consideration of all public comments.