Re: WW Discharge

Wayne Pferdehirt (pferdehi@epd.engr.wisc.edu)
Wed, 21 Feb 1996 13:43:08 CST

Under the Pretreatment regulations, 40 CFR 403.5(b)(1), all
non-domestic users of a publicly owned treatment works (POTW) sewer
system are prohibited from discharging "pollutants which create a fire
or explosion hazard in the POTW, including, but not limited to
waste streams with a closed cup flashpoint of less than 140 degrees
Fahrenheit or 60 degrees Centigrade using the test methods specified
in 40 CFR 261.21" users that have the potential to violate this
national prohibition may, among other controls, be required to perform
periodic flashpoint testing to ensure compliance, or the POTW may
perform such tests. Several of the national, technology-based
industry-wide categorical standards also set limits for organic
pollutants which are set well below levels that would likely cause
flammability problems; at least for the metals-related industries, it
is expected these limits would be met through sound solvent management
practices, and not by treatment. There are some POTWs in this region
or elsewhere that have dealt with unusual waste streams, but I'd
probably need more specifics before giving recommended contacts. 

 

PNEAC

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