PERMIT RATIONALE FOR REISSUANCE
Hancock County School District, Hancock North Central Elementary School
Hancock County
Kiln, Mississippi
Water NPDES No. MS0031038
August 2016

I.	FACILITY INFORMATION

Facility Name:  Hancock County School District, Hancock North Central Elementary School
Facility Address:  6122 Cuenas Town Road 
Kiln, MS  39571    
Kiln, 
Permit No.:  MS0031038
SIC:  1542
Permit Writer:  Amber Heggie
EPD Branch:  Municipal and Private Facilities Branch

II.	CLASSIFICATION – Commercial

III.	DESCRIPTION OF WASTEWATER – Domestic

IV.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated by an activated sludge facility followed by disinfection by tablet chlorination prior to discharge. 

V.	RECEIVING WATERS – Orphan Creek thence into Bayou Bacon thence into the Jourdan River.  Orphan Creek and Bayou Bacon are not denoted on the current State of Mississippi 303(d) List of Impaired Waterbodies.  However, Jourdan River has a completed TMDL for impairment of pathogens.  The Mississippi water quality standards for fecal coliform bacteria have been incorporated into the proposed permit and, therefore, should not further impair the receiving waters for pathogens. The waterbody is in the Coastal Streams drainage basin.  Orphan Creek and Bayou Bacon and classified as Fish and Wildlife. 

VI.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations (11 Mississippi Admin Code Pt 6 Ch 1), State of Mississippi Water Quality Criteria, and Commercial Facility Guidelines

VII.	SUMMARY OF DISCHARGE LIMITATIONS –
Parameter		Value				Basis
Flow			0.040 MGD			Design
BOD			30 mg/l (Semi Average)		Commercial Guidelines
TSS			30 mg/l (Semi Average)		Commercial Guidelines
Fecal Coliform		200 Col.100ml (Semi Average)	Commercial Guidelines
pH	6.0 to 9.0 S.U.				MSWQS
Chlorine	0.1 to 1.0 mg/l				Commercial Guidelines

The minimum and maximum values for Influent pH, Dissolved Oxygen in aeration units, and 30-Minute Sludge Settleability in aeration unit must be reported.