PERMIT RATIONALE FOR REISSUANCE
Southwest Mississippi Mental Health Foundation, New Haven Recovery Center
Lincoln County
Brookhaven, Mississippi
Water NPDES No. MS0058505
December 2017

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an aerated lagoon, followed by disinfection.  

IV.	RECEIVING WATERS – Unnamed Tributary of Fair River. The receiving stream is located within the Pearl River drainage 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 of Impaired Waterbodies, but does appear on a completed TMDL for fecal Coliform. The facility utilizes disinfection, and complies with the TMDL. 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 Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.01 MGD				Design
BOD			30 mg/l 				Admin. Code
TSS			60 mg/l 				Admin. Code
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

All previously permitted parameters have remained the same in the reissuance and continue to reflect the current water quality criteria.

VII.	CHANGES FROM PREVIOUS PERMIT –

             Fecal Coliform was replaced by E. Coli limits.