PERMIT RATIONALE FOR REISSUANCE
Lily Rose Water Association Inc, Stamps Subdivision
Jefferson Davis County
Prentiss, Mississippi
Water NPDES No. MS0038989
April 10, 2017

I.	CLASSIFICATION – Commercial NPDES 

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by means of a conventional lagoon followed by disinfection.  No increase in treated effluent flow is proposed within the application.  

IV.	RECEIVING WATERS – Dry Creek.  The receiving stream is located within the Pearl River Basin and is 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 for evaluated or impaired waterbodies.  The discharge is included in the Total Maximum Daily Load (TMDL) for Mercury in the Pearl River.  The facility operates as a subdivision and should not have a reasonable potential to contribute to the mercury load.  Only one discharge to surface waters is described within the application with no increase in treated effluent flow proposed.  

V.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations, WPC – 1 

VI.	SUMMARY OF LIMITATIONS –
	Parameter 				Value		Basis
	Flow					0.051 MGD		Design
	BOD5					30 mg/l (Yearly Avg.)		Domestic Guidelines
	TSS					90 mg/l (Yearly Avg.)		Technology
	E. Coli					126 Col./100 ml		11 MS admin code part 6
	Chlorine, Total Residual	0.1 – 1.0 mg/l		Domestic Guidelines
	pH					6.0 – 9.0 SU		MSWQS