PERMIT RATIONALE FOR REISSUANCE
Big Oak Trailer Park
Perry County
Beaumont, Mississippi
Water NPDES No. MS0039373
December 2023

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

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

IV.	RECEIVING WATERS – Unnamed Slough thence into Leaf River. At the point of discharge, the Leaf River does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies for Biological Impairment. The discharge is listed in a completed TMDL for pathogens, which the facility complies with via disinfection. The waterbodies are located in the Pascagoula River drainage basin, and both are classified as Fish & Wildlife. 

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

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 
Parameter		Value					Basis
Flow			0.002 MGD				Design
BOD			30 mg/l (Monthly Average) 		Domestic Guidelines
TSS			90 mg/l (Monthly Average)		Domestic Guidelines
pH			6.0 to 9.0 S.U.				Admin Code
	Chlorine		0.1 to 1.0 mg/l				Domestic Guidelines
	e. Coli			126 col/100 ml			Admin Code