PERMIT RATIONALE FOR REISSUANCE
Southern Oil Company, Fast Trac Number 7
Stone County
Perkinston, Mississippi
Water NPDES No. MS0045098
July 2024

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by an aerated treatment unit (ATU) followed by a rock/reed filter system.  No increase in flow is proposed within the application. The facility disinfects the effluent in order to comply with State criteria for pathogens (E. coli).

IV.	RECEIVING WATERS – Unnamed Creek into Ten Mile Creek.  The receiving water is located within the Pascagoula River Basin, and is classified as Fish and Wildlife.  Neither waterbody appears on the updated current State of Mississippi 303(d) list of impaired waterbodies. The discharge is not listed on a TMDL. 

V.	APPLICABLE GUIDELINES – 11 MS Admin Code Pt 6, Commercial Facility Guidelines (Technology), MS Water Quality Standards

VI.	CHANGES FROM PREVIOUS PERMIT – No changes from last reissuance.

VII.	SUMMARY OF LIMITATIONS –
Parameter			Flow						Basis
Flow				0.0015 MGD					Design
BOD5				30 mg/l 					Technology
TSS				30 mg/l 					Technology
E. coli				126 Col./100 ml 				MS WQS
Chlorine, Total Residual	0.1 – 1.0 mg/l					Technology
pH				6.0 – 9.0 SU					MS WQS