PERMIT RATIONALE FOR REISSUANCE
Utility Services LLC, Oak Park Subdivision
Warren County
Vicksburg, Mississippi
Water NPDES No. MS0032972
October 2025

I.	CLASSIFICATION – Commercial NPDES

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically by means of an oxidation ditch followed by disinfection by chlorination prior to discharge. No increase in treatment capacity is proposed within the application. 

IV.	RECEIVING WATERS – An Unnamed Creek thence into Hatcher Bayou. At the point of discharge the receiving stream does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies. The facility is not mentioned in a completed TMDL. Only one discharge to receiving waters is described within the application with no increase in treated effluent flow. This receiving stream is classified as Fish & Wildlife, and is located in the Yazoo and Upper Mississippi River drainage basin. 

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code Pt. 6 Ch. 1, Commercial Facility Guidelines (Technology), State of Mississippi Water Quality Criteria (MSWQS)

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 
Parameter			Value			Basis
Flow				0.180 MGD			Design
BOD5				10 mg/l (Monthly Average)		WLA
TSS				30 mg/l (Monthly Average)		Technology
Ammonia Nitrogen		2 mg/l (Monthly Average)		WLA
Dissolved Oxygen		6.0 mg/l 			WLA
E. Coli				126 Col./100ml			MSWQS
Chlorine, T.R.			0.011 mg/l			MSWQS
pH				6.0 – 9.0 S.U.			MSWQS