PERMIT RATIONALE FOR REISSUANCE
Crossing LLC, The, North Ridge Crossing Subdivision
Lee County
Saltillo, Mississippi
Water NPDES No. MS0054364
June 2022

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by means of a conventional lagoon followed by disinfection prior to discharge.  Only one discharge to surface waters is described in the application with no increase in treated effluent flow proposed.   

IV.	RECEIVING WATERS –  Unnamed tributary thence Yonaba Creek thence Town Creek. The receiving waters are located within the Tombigbee River basin and are classified as Fish and Wildlife. The receiving stream appears on the current 303(d) List of Impaired Waterbodies.  Specifically, Yonoba Creek (Waterbody ID 804511) is listed for biological impairment from the confluence of Bridge Creek to confluence with Town Creek. The facility appears on a completed Total Maximum Daily Load (TMDL) for Pathogens in Town Creek (May 2002).  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)

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value						Basis
Flow			0.076 MGD					Design
BOD			30 mg/l 					Technology
TSS			90 mg/l 					Technology
E. coli			126 Col./100mL 				Admin Code
Effluent pH		6.0 to 9.0 S.U.					Admin Code
Chlorine		0.1 to 1.0 mg/l					Admin Code