PERMIT RATIONALE FOR REISSUANCE
TLC Resorts LLC, Wolf River Resort
Harrison County
Pass Christian, Mississippi
Water NPDES No. MS0035131
September 2019

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by means of an aerated lagoon, which discharges through Outfall 001 with a design capacity of 0.008 MGD. Domestic wastewater is also collected and treated biologically by means of an activated sludge system, which discharges through Outfall 002 with a design capacity of 0.008 MGD. The overall capacity of wastewater treatment facilities is 0.016 MGD, with no increase in flow proposed within the application. 

IV.	RECEIVING WATERS – Unnamed Tributary of the Wolf River. The receiving waters are located within the Coastal Streams drainage basin and are classified as Recreational.  At the point of discharge, the receiving stream does not appear on the 2018 State of Mississippi 303(d) List of Impaired Waterbodies. The facility is listed in a Total Maximum Daily Load (TMDL) for Nutrients and Organic Enrichment in St. Louis Bay Tributaries (June 2007), however the TMDL does not recommend any reduction in permitted limits or the addition of Total Nitrogen and Total Phosphorus limits to the permit. The facility is also listed in a Fecal Coliform TMDL for St. Louis Bay (July 2001). The facility disinfects, which satisfies the requirements of the TMDL. 

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6, State of Mississippi Water Quality Criteria (MSWQS), Commercial Facility Guidelines (Technology)

VI.	CHANGES FROM PREVIOUS PERMIT – 

The proposed draft permit contains enterococci limits in accordance with the state bacteria standards for marine and estuarine waters. 

VII.	SUMMARY OF DISCHARGE LIMITATIONS – 
Outfall 001

Parameter			Value		Basis
Flow				0.008 MGD		Design
BOD5				30 mg/l 		Technology
TSS				60 mg/l 		Technology
Enterococci			35 Col./100ml		MSWQS
Chlorine, Total Residual	0.1 – 1.0 mg/l		Technology
pH				6.0 – 9.0 SU		MSWQS

Outfall 002

Parameter			Value		Basis
Flow				0.008 MGD		Design
BOD5				30 mg/l		Technology
TSS				30 mg/l 		Technology
Enterococci			35 Col./100ml		MSWQS
Chlorine, Total Residual	0.1 – 1.0 mg/l		Technology
pH				6.0 – 9.0 SU		MSWQS

The minimum and maximum values for influent pH, dissolved oxygen in the aeration basin, and 30-minute sludge settleability in the aeration basin must be reported.