PERMIT RATIONALE FOR REISSUANCE
Mississippi Department of Wildlife Fisheries and Parks, Holmes County State Park
Holmes County
Durant,, Mississippi
Water NPDES No. MS0027324
March 2023

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an activated sludge system.  

IV.	RECEIVING WATERS – Box Creek.  Box Creek does not appear on the current 303(d) List of Impaired Waterbodies. The discharge is included in a completed TMDL for Pathogens, low pH, and fecal coliform. The facility disinfects which complies with the Pathogens TMDL.  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.  This waterbody is in the Big Black River drainage basin.  Box Creek is classified as Fish and Wildlife.

V.	APPLICABLE GUIDELINES – 11 MS Admin Code pt 6. (State of Mississippi Wastewater Regulations), Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.013 MGD				Design
BOD			30 mg/l 				Previous Permit
TSS			30 mg/l				Domestic Guidelines
e. Coli			126 Col./100mL			Admin Code
Effluent pH		6.0 to 9.0 S.U.				MS WQS
Chlorine		0.1 to 1.0 mg/l				Domestic Guidelines
	
The minimum and maximum values for Influent ph, Dissolved Oxygen in aeration unit, and 30-Minute Sludge Settleability in aeration unit must be reported