PERMIT RATIONALE FOR REISSUANCE
Ring Road Utility Inc, Silver Leaf Development
Warren County
Vicksburg, Mississippi
Water NPDES No. MS0054755
May 2, 2013

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 –  Unknown Tributary thence Hatcher Bayou. Hatcher Bayou does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies.  These waterbodies are in the Big Black River drainage basin, and are both classified as Fish and Wildlife.  One discharge to surface waters is described within the application with no increase in flow proposed.  

V.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations (WPC-1),  State of Mississippi Water Quality Criteria, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.032 MGD				Design
BOD			30 mg/l (Monthly Avg)		Domestic Guidelines
TSS			90 mg/l (Monthly Avg)		Domestic Guidelines
Fecal Coliform	200 Col./100mL (Monthly Avg)	Domestic Guidelines
Effluent pH		6.0 to 9.0 S.U.				MS WQS
Chlorine		0.1 to 1.0 mg/l				MS WQS
	
All previously permitted parameters have remained the same in the reissuance.