PERMIT RATIONALE FOR REISSUANCE

Coahoma County Utility District Number 2, Bobo POTW
Coahoma County
Clarksdale, Mississippi
Water NPDES No. MS0045179
May 2025

I.	CLASSIFICATION – Municipal Minor NPDES

II.	DESCRIPTION OF WASTEWATER – Municipal Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via a 2-cell conventional lagoon.

IV.	RECEIVING WATERS – Ditch thence Annis Brake. Annis Brake does not appear on The State of Mississippi current List of Waterbodies.  This waterbody is in the Yazoo River drainage basin. Annis Brake is classified as Fish and Wildlife and is ephemeral. Hushpuckena River TMDL for nutrients includes Bobo Utility District but does not call for the limits. 

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6 Municipal Facilities Guidelines (Technology), State of Mississippi Water Quality Criteria.(MSWQS), Waste Load Allocation (WLA)

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter			Value					Basis
Flow				0.02 MGD				Design
BOD				45 mg/l				WLA
TSS				90 mg/l 				Technology
E. Coli				126 col/100ml				WLA
pH				6.0 to 9.0 S.U.				WLA
Chlorine			0.011 mg/l 				WLA
Total Nitrogen			Report lbs/day				WLA
Total Phosphorus		Report lbs/day				WLA
Minimum DO			Report mg/l				WLA
Ammonia Nitrogen		Report, mg/l				WLA

Waste Load Allocation established reporting ammonia monitoring and limitation requirements.