PERMIT RATIONALE FOR REISSUANCE
Fulton POTW, West Central
Itawamba County
Fulton, Mississippi
Water NPDES No. MS0028011
April 10, 2017

I.	CLASSIFICATION – Municipal NPDES Minor

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically by means of a two-cell conventional lagoon followed by disinfection.  No increase in flow is proposed within the application.  

IV.	RECEIVING WATERS – Tennessee – Tombigbee River.  The receiving water is located within the Tombigbee River Basin and is classified as Public Water Supply at the point discharge.  It was an existing discharge before the installation of the water intake, and the reclassification of the stream to Public Water Supply.  At the point of discharge the receiving waters do not appear on the current State of Mississippi 303(d) list for evaluated or impaired waterbodies. A TMDL has not yet been conducted for this receiving stream.  The 7Q10 for the Tennessee – Tombigbee River at the point of discharge of the POTW is 100.0 cfs.  The instream wastewater concentration at the point of discharge is determined by the following calculation: 

IWC – {(Qw)/(Qw + QR)}*100
	Where:
	Qw = Design flow of the wastewater treatment facility, 0.24 MGD or 0.37 cfs
	Qr = Receving stream 7Q10, 100.0 cfs

IWC = {(0.37 cfs)/(0.37 cfs + 100.0 cfs)} * 100 = 0.37%

V.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations, WPC – 1 

VI.	SUMMARY OF LIMITATIONS –
Parameters				Value				Basis
Flow					0.24 MGD 			Design
BOD5					30 mg/l				Modeled 
TSS					90 mg/l				MSWQS
E. Coli					126 #col/100ml			MSWQS
Dissolved Oxygen			> 6.0 mg/l			MSWQS
Total Residual Chlorine			1.0 mg/l (Maximum)		MSWQS
pH					6.0– 9.0 SU			MSWQS