PERMIT RATIONALE FOR REISSUANCE
Oktibbeha County School District, East Oktibbeha Elementary School
Oktibbeha County
Starkville,, Mississippi
Water NPDES No. MS0038598
November 2018

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by means of a conventional lagoon. 

IV.	RECEIVING WATERS – An Unnamed Creek thence into Ash Creek thence into Tibbee Creek. At the point of discharge none of these waterbodies appear on the updated State of Mississippi 303(d) List of Impaired Waterbodies. Tibbee Creek is mentioned in a completed Fecal Coliform TMDL. The facility disinfects, and complies with the TMDL. The receiving waters are located in the Tombigbee River drainage basin, and are classified as Fish & 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 Mississippi Admin. Code pt. 6 (Admin. Code), Total Maximum Dailey Load (TMDL), and Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 
Parameter		Value					Basis
Flow			0.015 MGD				Design
BOD			30 mg/l 				Domestic Guidelines
TSS			90 mg/l				Domestic Guidelines
E. Coli			126 Col./100mL 			TMDL
Effluent pH		6.0 to 9.0 S.U.				Admin. Code
Chlorine		0.1 to 1.0 mg/l				Admin. Code

VII.	CHANGES FROMPREVIOUS PERMIT- E. Coli Limitations have replaced Fecal Coliform.