PERMIT RATIONALE FOR REISSUANCE
T and S Tunnel Express Carwash
Warren County
Vicksburg,, Mississippi
Water NPDES No. MS0056561
June 2, 2026

I.	FACILITY INFORMATION

Facility Name:  T and S Tunnel Express Carwash
Facility Address:  Number 1 County Lane 
Vicksburg,, MS  39180    
Vicksburg, 
Permit No.:  MS0056561
SIC:  7542
Permit Writer:  Na’Javion Goudy 
EPD Branch:  Water II Branch

II.	NATURE OF BUSINESS

T and S Tunnel Express Carwash operates an unmanned commercial car wash facility. 

III.	EFFLUENT AND RECEIVING STREAM FLOW DATA

T and S Tunnel Express Carwash discharges 1,500 gallons per day of treated carwash effluent through an existing outfall into Hatcher Bayou which is located in the South Independent drainage basin.

IV.	303(d) and TOTAL MAXIMUM DAILY LOADS (TMDLs) ISSUES

Hatcher Bayou appears on Mississippi’s 2020 Section 303(d) List of Impaired Water Bodies for biological impairment. The permit complies with the following TMDLs:

•	Total Maximum Daily Loads For The Legacy Pesticides, DDT and Toxaphene, In The Pearl River, South Independent Streams, And Lower Mississippi River Basins (TMDL ID 507010401; January 2007).

V.	TYPE OF WASTEWATER TREATMENT

Sand bed filter.

VI.	EPA APPLICABLE CATEGORICAL GUIDELINES

None.

VII.	DATA FROM MISSISSIPPI SMALL DOMESTIC NPDES APPLICATION

	Application testing waiver was requested and approved.

VIII.	PROPOSED FINAL LIMITATIONS 

Outfall 001
Parameter	Current Permit Limit (CPL)	Present Permit Limit (PPL)	Basis	
	Average	Maximum	Average	Maximum		
Flow	-----	0.0015 MGD	-----	0.0015 MGD	Design	
pH	6.0 SU (min)	9.0 SU	6.0 SU (min)	9.0 SU	MSWQS	
Oil and Grease	10 mg/L	15 mg/L	10 mg/L	15 mg/L	1/	
Total Suspended Solids 	30 mg/L	45 mg/L	30 mg/L	45 mg/L	1/	
MSWQS = Mississippi Water Quality Standards

1/Proposed permit limits for Oil and Grease and Total Suspended Solids are comparable to limits placed in permits held by existing similar commercial car wash facilities in the State of Mississippi.  

Effluent Limits have been developed such that the waste treatment system should protect water quality.  However, this permit is subject to modification if future evidence, monitoring results, or nuisance conditions indicate a higher degree of treatment is required to maintain water quality in the receiving stream.