PERMIT RATIONALE FOR REISSUANCE
Lamar County School District, Baxterville Attendance Center
Lamar County
Baxterville, Mississippi
Water NPDES No. MS0038423
December 29, 2025

I.	CLASSIFICATION – Commercial NPDES 

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

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

IV.	RECEIVING WATERS – Unnamed creek thence into Cowpen Reed Brake thence into Dry Creek.  The receiving waters are located within the Pearl River Basin and are classified as Fish and Wildlife.  At the point of discharge, the receiving stream does not appear on the most recent State of Mississippi 303(d) list of evaluated or impaired waterbodies.  The discharge does appear on a completed Total Maximum Daily Load (TMDL) for fecal coliform (January 2012). The facility utilizes chlorine disinfection, which complies with the conditions of the TMDL.  Only one discharge to surface waters is described within the application with no increase in treated effluent flow proposed.  

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6 

VI.	SUMMARY OF LIMITATIONS –
	Parameter			Value		   	Basis
	Flow				0.01 MGD		      	Design
	BOD5				30 mg/l (Max Monthly Avg.)	Admin Code
	TSS				60 mg/l (Max Monthly Avg.)	Admin Code
	E. coli				126 Col./100 ml		      	Admin Code
	Chlorine, Total Residual	0.1 – 1.0 mg/l	 	      	Admin Code
	pH				6.0 – 9.0 SU		      	Admin Code