PERMIT RATIONALE FOR REISSUANCE
Claiborne County Public Schools
Claiborne County High School and Vo Tech Center
Claiborne County
Port Gibson, Mississippi
Water NPDES No. MS0046981
June 2024

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically by means of an aerated lagoon followed by chlorination.  No increase in flow is proposed within the application.   

IV.	RECEIVING WATERS –  Unnamed tributary of Bayou Pierre.  Bayou Pierre does appear on the updated 303(d) List of Impaired Waterbodies with Monitoring Data for pH.  The facility is included in a completed TMDL for Pathogens.  The facility disinfects, which complies with the TMDL.  The receiving waters are located within the Southern Independent Stream Basin and are classified as Fish and Wildlife.  One discharge to surface waters is described within the application with no increase in flow proposed. The discharge from this facility should not further impair water quality.

V.	APPLICABLE GUIDELINES – 11 MS Admin Code pt. 6, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.0165 MGD				Design
BOD			30 mg/l				Domestic Guidelines
TSS			60 mg/l				Domestic Guidelines
E. Coli			126 Col./100mL			Domestic Guidelines
Effluent pH		6.0 to 9.0 S.U.				11 MS Admin Code
Chlorine		0.1 to 1.0 mg/l				11 MS Admin Code