Industrial users that discharge to a POTW that has not been required to develop a Pretreatment Program, but may contribute pollutants that may pass through or interfere with the operation of the POTW, may be required to submit to pretreatment standards without the POTW having to develop a full Pretreatment Program. Categorical industrial users discharging to POTWs without an approved pretreatment program must meet Federal Categorical Standards. There are currently thirteen EPA approved Pretreatment Programs in Louisiana. Presently, there are no individual industrial users discharging to a POTW without a Pretreatment Program that have been given an indirect discharge permit. The Pretreatment Unit of the Municipal Permit Section will review and approve all POTW pretreatment program related functions.
All municipal applications request information on significant industrial users.
If a POTW appears to be a probable Pretreatment Program candidate, additional information will be requested to further clarify the necessity of a program. Appropriate pretreatment permit language for approved programs will be incorporated into the POTWs discharge permit by the Municipal Permit Unit upon the recommendation of the Pretreatment Unit so as to make the approved program provisions or requirements to develop a pretreatment program enforceable conditions of the permit. If the Enforcement Section identifies POTWs that appear to have pass through or interference problems, a referral will be made to the Pretreatment Unit. The Pretreatment Unit will request further information, consult industrial registers and make site visits to determine the necessity for a Pretreatment Program. If problem industries are identified but a full program is not deemed necessary, indirect discharge permits will be issued.