PERMIT RATIONALE FOR REISSUANCE
MDOT, Interstate 10, Welcome Center, Hancock
Hancock County
Pearlington, Mississippi
Water NPDES No. MS0028142
November 2023

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater from the MDOT Interstate 10 Welcome Center is collected and treated by an activated sludge plant, followed by chlorination. Effluent is then spray irrigated to an overland flow to the discharge point.

IV.	RECEIVING WATERS – Unnamed Creek thence into Bogue Homo Creek.  Bogue Homo Creek does not appear on the updated 303(d) list of impaired waterbodies. A TMDL has been completed for Fecal Coliform. The facility disinfects and complies with the TMDL. This waterbody is in the Pearl River drainage basin. Bogue Homo Creek and classified as Fish and Wildlife.  
V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6, Commercial Facility Guidelines (Technology), State of Mississippi Water Quality Criteria (MSWQS)

VI.	SUMMARY OF DISCHARGE LIMITATIONS 
Parameter		Value				Basis
Flow			0.05 MGD		Design
BOD			30 mg/l 			Technology
TSS 			30 mg/l 			Technology
E. coli			126 Col./100mL 	MSWQS
pH			6.0 to 9.0 S.U.	MSWQS
Chlorine		0.1 to 1.0 mg/l	Technology

VII.	CHANGES FROM PERVIOUS PERMIT-

No Change