PERMIT RATIONALE FOR REISSUANCE
Pearl River County Utility Authority, Arbor Lakes Subdivision
Pearl River County
Poplarville, Mississippi
Water NPDES No. MS0051225
September 2020
		
I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an aerated lagoon 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 – Price Creek. The receiving waters are located in the Pearl River drainage basin and are classified as Fish and Wildlife. At the point of discharge, the receiving stream does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies. The discharge does appear on a completed Total Maximum Daily Load (TMDL) for pathogens in West Hobolochitto Creek (December 2009). The facility utilizes chlorine disinfection, which complies with the conditions of the TMDL.

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

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value			Basis
Flow			0.04 MGD		Design
BOD			30 mg/l 		Technology
TSS 			60 mg/l 		Technology
E. coli			126 Col./100mL 	MSWQS
pH			6.0 to 9.0 S.U.		MSWQS
Chlorine		0.1 to 1.0 mg/l		Technology

VII.	CHANGES FROM PREVIOUS PERMIT – 

E. coli has replaced fecal coliform as the bacterial indicator for all freshwaters in Mississippi designated as Recreation, Fish and Wildlife Support, and/or Public Water supply.