PERMIT RATIONALE FOR REISSUANCE
NES Rentals Holdings Inc, NES Rentals Gulfport
Harrison County
Gulfport, Mississippi
Water NPDES No. MS0062324
June 2016

I.	FACILITY INFORMATION

Facility Name:  NES Rentals Holdings Inc, NES Rentals Gulfport
Facility Address:  5900 County Farm Road 
Gulfport, MS  39501    
Chicago, 
Permit No.:  MS0062324
SIC:  7359
EPD Branch:  Service and Miscellaneous Industries Branch

II.	NATURE OF BUSINESS – Equipment rental and maintenance with occasional washing.

III.	EFFLUENT AND RECEIVING STREAM FLOW DATA – Unnamed Tributary of Turkey Creek.  Turkey Creek is classified as Fish and Wildlife.

IV.	303(d) ISSUES – Turkey Creek is listed on the 2016 303d list for Bacteria impairment.  This discharge should not contribute to further degradation.

V.	TYPE OF WASTEWATER TREATMENT: Sedimentation Trap / Oil Water Separator.

VI.	PROPOSED FINAL LIMITATIONS 

1.	Average Permit Limitations

Outfall	Parameter	Categorical Limitation	Water Quality Limitation	Proposed Permit Limitation	Basis	
MS0060364-001	Flow	N/A	N/A	400
Gallons / day	Current permit	
MS0060364-001	Total Suspended Solids	N/A	N/A	30 mg/L	Current permit	
MS0060364-001	Oil and Grease	N/A	N/A	10 mg/L	Current permit	
MS0060364-001	pH	N/A	N/A	6.0 < pH < 9.0 s.u.	Current permit	

2.	Maximum Permit Limitations

Outfall	Parameter	Categorical Limitation	Water Quality Limitation	Proposed Permit Limitation	Basis	
MS0060364-001	Flow	N/A	N/A	N/A	Current permit	
MS0060364-001	Total Suspended Solids	N/A	N/A	45 mg/L	Current permit	
MS0060364-001	Oil and Grease	N/A	N/A	15 mg/L	Current permit	
MS0060364-001	pH	N/A	N/A	6.0 < pH < 9.0 s.u.	Current permit	

There is currently no monitoring required for this permitted discharge.  The effluent limits for the discharge have been developed such that the waste treatment system should protect the water quality.  However, this permit is subject to modification if future evidence, monitoring results, or nuisance conditions indicate a higher degree of treatment is required to maintain water quality in the receiving stream.