PERMIT RATIONALE FOR REISSUANCE
Twin Lakes Farm LLC
Oktibbeha County
Starkville, Mississippi
Water NPDES No. MS0052345
April 2017

I.	CLASSIFICATION – Domestic NPDES Minor

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically by means of an aerobic treatment unit followed by disinfection.  The treatment capacity is 0.002 MGD with no increase in flow proposed.  

IV.	RECEIVING WATERS – An unnamed tributary thence into Sand Creek.  The receiving waters are located within the Tombigbee River Basin and are classified as Fish and Wildlife.  At the point of discharge, the receiving waters do not appear on State of Mississippi 303(d) list of evaluated or impaired waterbodies.  Only one discharge to surface waters is described within the application with no increase in flow proposed.  

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

VI.	SUMMARY OF LIMITATIONS – 
	
	Parameter						Value			Basis
	Flow						0.002 MGD			Design
	BOD5						30 mg/l 			Admin. Code
	TSS						30 mg/l 			Technology
	E. Coli						126 # of Col./100 ml		Admin. Code
	Chlorine, Total Residual			0.1 – 1.0 mg/l			Admin. Code
	pH						6.0 – 9.0 SU			Admin. Code

VII.	CHANGES FROM PREVIOUS PERMIT-

	Fecal Coliform Limits are replaced by E. Coli Limits.