Categorical Exclusion Determination
Office of NEPA Policy and Compliance
December 1, 2016
Estimated Read Time min
Problem Description: Oily condensate and compressor oil from the air compressors in 241-049H passes through the floor drains to a stormwater conveyance system West of 241-049H and then flows to National Pollutant Discharge Elimination System Outfall H-07. Oil and grease is not permitted at National Pollutant Discharge Elimination System Outfall H-07 by the existing National Pollutant Discharge Elimination System permit. The existing oil/water separator needs to be replaced by a more efficient unit.