PERMIT RATIONALE FOR REISSUANCE
Double C Feed & Seed Store LLC
Leake County
Carthage, Mississippi
Water NPDES No. MS0061107
March 2019

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an aerated treatment unit (ATU) 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. 

IV.	RECEIVING WATERS – Unnamed tributary of Lobutcha Creek. The receiving waters are located in the Pearl 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.  The discharge does appear on a completed Total Maximum Daily Load (TMDL) for Fecal Coliform in the Pearl River (December 2011). The facility utilizes chlorine disinfection, which complies with the conditions of the TMDL.

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

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value			Basis
	Flow			0.0005 MGD		Design
	BOD			30 mg/l 			Technology
	TSS 			30 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

VII.	CHANGES FROM PREVIOUS PERMIT – 

E. coli has replaced fecal coliform as the bacterial indicator for all freshwaters in Mississippi designated as Recreation, Fish and Wildlife Support, and/or Public Water supply.