PERMIT RATIONALE FOR REISSUANCE
Timberlane Utility LLC, Timberlane Subdivision
Pontotoc County
Tupelo, Mississippi
Water NPDES No. MS0056839
June 24, 2019

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via a conventional lagoon.  

IV.	RECEIVING WATERS – Dry Creek. Dry Creek does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies for Pontotoc County nor a TMDL has been conducted for this receiving stream.  This waterbody is in the Tombigbee River drainage basin, and is classified as Fish and Wildlife.

V.	APPLICABLE GUIDELINES – 11 MS admin code part 2, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.068 MGD				Design
BOD			30 mg/l 				Domestic Guidelines
TSS			90 mg/l 				Domestic Guidelines
E. Coli			126 Col./100mL 			Domestic Guidelines
pH			6.0 to 9.0 S.U.				11 MS admin code part 2
Chlorine		0.1 to 1.0 mg/l				11 MS admin code part 2

E. Coli will now be the bacterial indicator used for all freshwaters in MS designated as Recreation, Fish and Wildlife Support, and /or Public Water supply (replacing the use of fecal coliform).