PERMIT RATIONALE FOR REISSUANCE
Oxford, City of, Royal Oaks Wastewater Treatment Lagoon
Lafayette County
Oxford, Mississippi
Water NPDES No. MS0052957
November 2023

I.	FACILITY INFORMATION

Facility Name:  Oxford, City of, Royal Oaks Wastewater Treatment Lagoon
Facility Address:  751 Shady Oaks Circle 
Oxford, MS  38655    
Oxford, 
Permit No.:  MS0052957
SIC:  6552
Permit Writer:  Christiana Boren
EPD Branch:  Municipal and Private Facilities
II.	CLASSIFICATION – NPDES Commercial

III.	DESCRIPTION OF WASTEWATER – Domestic

IV.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an aerated lagoon followed by chlorine disinfection prior to discharge. Only one discharge to surface waters is described within the application with no increase in treated effluent flow proposed. 

V.	RECEIVING WATERS – Unnamed ditch thence into East Goose Valley Creek thence into Toby Tubby Creek. The receiving waters are located in the Yazoo River drainage basin and are classified as Fish and Wildlife. At the point of discharge, the receiving stream does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies, nor does the discharge appear on a completed Total Maximum Daily Load (TMDL).

VI.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6, Commercial Facility Guidelines (Technology)

VII.	SUMMARY OF DISCHARGE LIMITATIONS – 

	Parameter				Value				Basis
	Flow					0.03 MGD				Design
	BOD					30 mg/l 				Technology
	TSS 					60 mg/l 				Technology
	E. coli					126 Col./100mL 			Admin Code
pH					6.0 to 9.0 S.U.			Admin Code
	Chlorine					0.1 to 1.0 mg/l			Admin Code
Ammonia Nitrogen Phase I		Report (Monthly Average)		Modeled
Ammonia Nitrogen Phase II		1.37 mg/l (Monthly Average)	Modeled

VIII.	CHANGES FROM PREVIOUS PERMIT – Establish new Total Ammonia Nitrogen Limit of 1.37 mg/L, establish Nutrient Reporting