PERMIT RATIONALE FOR REISSUANCE
Gulf Coast Research Laboratory
Jackson County
Ocean Springs, Mississippi
Water NPDES No. MSP090507
July 11, 2017

I.	CLASSIFICATION – State Operating Pretreatment Permit

II.	DESCRIPTION OF WASTEWATER – Bioassay testing wastewater.

III.	DESCRIPTION OF WASTEWATER TREATMENT – Bioassay testing wastewater is collected and treated through a series of carbon and 16m filters followed by UV disinfection.  

IV.	APPLICABLE GUIDELINES – 40 CFR 403-General Pretreatment Regulations. This facility falls under the Water regulatory program and the Pretreatment-Noncategorical Sub-program.

V.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.009 MGD				Design
BOD5			Report					Previous Permit
COD			Report					Previous Permit 
Total Phenol		Report					Previous Permit
pH			5.5 to 9.5 S.U.				Previous Permit