Section 327IAC5-18-2. Pretreatment standards for prohibited discharges

   (a) A user of a POTW, whether or not the user is subject to national categorical standards or state, local, or any other national pretreatment standard or requirement, shall not allow the introduction of the following into the POTW:

(1) A pollutant from any source of nondomestic wastewaters that could pass through or cause interference with the operation or performance of the POTW.

(2) A pollutant that could create a fire or explosion hazard in the POTW, including waste streams with a closed cup flashpoint of less than one hundred forty (140) degrees Fahrenheit (sixty (60) degrees Celsius) using the test methods in 40 CFR 261.21.

(3) A pollutant that could cause corrosive structural damage to the POTW, including a discharge with pH lower than 5.0, unless the POTW is specifically designed to accommodate such a discharge.

(4) A solid or viscous pollutant in an amount that could cause obstruction to the flow in a sewer or other interference with the operation of the POTW.

(5) A pollutant, including an oxygen demanding pollutant (such as biochemical oxygen demand) released in a discharge at a flow rate or pollutant concentration that could cause interference in the POTW.

(6) Heat in an amount that could:

(A) inhibit biological activity in the POTW and result in interference or damage to the POTW; or

(B) exceed forty (40) degrees Celsius or one hundred four (104) degrees Fahrenheit at the POTW treatment plant unless the commissioner, upon request of the POTW, approves alternate temperature limits.

(7) Petroleum, oil, nonbiodegradable cutting oil, or products of mineral oil origin in an amount that could cause interference or pass through.

(8) A pollutant that could result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems.

(9) A trucked or hauled pollutant, except:

(A) with the permission of the POTW; and

(B) when introduced to the POTW at a discharge point designated by the POTW.

  (b) Specific limits on the prohibited substances listed in subsection (a) must:

(1) be developed and effectively enforced by a POTW required to develop a POTW pretreatment program under 40 CFR 403.8 and 327 IAC 5-19;

(2) continue to be developed, as necessary, and effectively enforced by a POTW with an approved POTW pretreatment program; or

(3) be developed and enforced by a POTW, not included in subdivision (1) or (2), so as to limit:

(A) a pollutant contributed by an industrial user that has caused or is likely to cause interference or pass through at the receiving POTW; and

(B) the recurrence of the contributed pollutant's affect on the POTW.

A POTW affected by this subdivision shall make appropriate changes in the POTW treatment facilities or operation, as necessary, to prevent occurrences of interference or pass through.

Individual notice shall be made in writing to persons or groups who have requested to be notified and given an opportunity to comment about the development and enforcement of specific effluent limits as required by this subsection.

  (c) POTWs may develop BMPs to implement subsection (b)(1) and (b)(2). Such BMPs shall be considered local limits and pretreatment standards for the purposes of Section 307(d) of the Clean Water Act (33 U.S.C. 1317(d)).

  (d) When specific prohibitions or limits on pollutants or pollutant parameters are developed by a POTW in accordance with subsection (b) or (c), the prohibitions or limits are pretreatment standards for the purposes of the pretreatment rules and Section 307(d) of the Clean Water Act (33 U.S.C. 1317(d)). (Water Pollution Control Division; 327 IAC 5-18-2; filed Oct 10, 2000, 3:02 p.m.: 24 IR 297; filed Apr 3, 2009, 1:55 p.m.: 20090429-IR-327060156FRA)