PERMIT RATIONALE FOR REISSUANCE
MSARNG, Camp McCain Training Center
Grenada County
Elliott, Mississippi
Water NPDES No. MS0029564
September 19, 2022

I.	CLASSIFICATION – Municipal NPDES Minor

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater 

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by means of a 2 – cell primary lagoon followed by a 1 – cell stabilization pond.  All three cells have curtains.  The treated wastewater is then land applied onto an overland flow system where it will then be collected into a chlorinated followed by dechlorination.  No increase in treated effluent flow is proposed within the application.  

IV.	RECEIVING WATERS – Unnamed tributary of Batupan Bogue Creek.  The receiving streams are located within the Yazoo River Basin and are classified as Fish and Wildlife.  At the point of discharge the receiving stream does not appear on the most recent State of Mississippi 303(d) list of evaluated or impaired waterbodies.  At the point of discharge the 7Q10 for the receiving stream is 0.0 cfs.  The instream wastewater concentration at the point of discharge can be determined by the following calculation:

IWC = {(Qw)/(Qw + QR)}*100
	Where:
	Qw = Design flow of the wastewater treatment facility, 0.125 MGD or 0.193 cfs.
	QR = Receiving stream 7Q10, 0.0 cfs.

IWC = {(0.193 cfs)/(0.193 cfs + 0.0 cfs)}*100 = 100.00 %

V.	APPLICABLE GUIDELINES – 11 MS admin code part 6

VI.	SUMMARY OF LIMITATIONS –
Parameter				Value				Basis
Flow					0.125 MGD			Design
BOD5					10 mg/l (Yearly Avg.)		Modeled
NH3-N	(Phase I)	    	    	 2 mg/l				MSWQS
NH3-N	(Phase II)	    	     	1.37 mg/l			WLA
TSS					30 mg/l (Yearly Avg.)		Technology
Dissolved Oxygen			> 6.0 mg/l 			MSWQS
E. Coli					126 Col./ 100 ml		MSWQS
Chlorine, Total Residual		0.011 mg/l 			MSWQS
Nitrogen (Total)			Report	mg/l 			MSWQS
Phosphorus (Total)			Report mg/l			MSWQS
pH					6.0 – 9.0 SU			MSWQS

Upon issuance of this permit, the permittee shall achieve compliance with the effluent limitations specified for the parameters noted as Phase I.  Beginning upon the completions and start-up of the improvements needed to comply with Phase II limitations, three (3) years after the permit effective date, the permittee shall achieve compliance with the effluent limitations specified for the parameter noted as Phase II.

The permittee shall submit an engineering report that describes how the facility will come into compliance with the Phase II limitations.