PERMIT RATIONALE FOR REISSUANCE
Pat Harrison Waterway District, Maynor Creek Water Park
Wayne County
Waynesboro, Mississippi
Water NPDES No. MS0027162
June 2022

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically via an activated sludge system followed by chlorine disinfection prior to discharge.  Only one discharge to surface waters is described within the application with no increase in treated effluent flow proposed.

IV.	RECEIVING WATERS – Maynor Creek.  The receiving waters are located in the Pascagoula River basin and are classified as Fish and Wildlife.  Maynor Creek does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies nor does the discharge appear on any completed Total Maximum Daily Loads (TMDLs). 

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6, Commercial Facility Guidelines (Technology), State of Mississippi Water Quality Standards (MSWQS)

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter			Value				Basis
Flow				0.02 MGD			Design
BOD				30 mg/l 			Technology
TSS				30 mg/l 			Technology
E. coli				126 Col./100mL 		MSWQS
pH, effluent			6.0 to 9.0 SU			MSWQS
Chlorine			0.1 to 1.0 mg/l			MSWQS
pH, influent			Report SU			Technology
Aeration Basin DO		Report mg/l			Technology
30-min Sludge Settleability	Report ml/L			Technology