REP15015 - Laserfiche WebLink

Home Browse Search

DEFINITION OF EFFLUENT LIMITATIONS (Continued) PARTI Page No. 6 Pert No.: CO-0034142 A fourth document in this series is Methods for Aouatic Toxiciri Identification Evaluations Phase III Toxicity Confirmation Procedures. EPA/600/3-88/036 Feb. 1989. As indicated by the rifle, this procedure is intended to confirm that the suspected toxicant is truly the toxicant. This investigation is optional. Within 90 days of the deterrrtirtation of the toxicant ar no later than 210 days after demonstration of toxicity, whichever is sooner, a control program is to be developed and received by the Division The program shall sat down a method and procedure for elimination of the toxicity to acceptable levels. (e) Request For Relief The•permittee may request.relief from further investigation and testing where the toxicant has not been determined and the ' Division has determined suitable treatment does not appeaz possible. ~-In requesting such relief, the pennittee shall submit material sufficient to establish the following: .. . (i) It has complied with terms and conditions of the permit compliance schedule for the PTLTIE investigation and other appropriate conditions as may have been required by the Division; (ii) During the period of the toxicity incident it has been in compliance with all other permit conditions, including, in the case of a POTW; pie-treatment requirements; (iii) During the period of the toxicity incident it has properly maintained and operated all facilities and systems of treatment and control; and (iv)Despite the circumstances descnbed in paragraphs (i) and (iii) above, the source and/or cause of toxicity could not be located or resolved. If deemed appropriate by the Division, the permit or the compliance schedule may be modified to revise the ongoing monitoring and toxicity investigation requirements to avoid an unproductive expenditure of the pemzittee's resotuces, provided that the underl}~ing obligation to eliminate any continuing exceedence of the toxicity limit shall remain. (g) Spontaneous Disanoearance ~ ~. , If toxicity spontaneously disappeazs at any time after a test failure, the permittee shall notify the Division in writing within 14 days of a demonstration of disappearance of the toxicity. The Division may require the permittee to develop and submit additional information which may include, but is not limited to, the results of additional testing. If no pattern of toxicity is identified or recurring toxicity is not identified, the toxicity incident response is considered closed and normal WET testing shall restune. (h) ToxiciriReonener This permit may be reopened and modified (following proper administrative procedures) to include new compliance dates, additional or modified numerical permit limitations, a new or different compliance schedule, a change in the whole effluent toxicity testing protocol, of any other conditions related to the control of toxicants if one or more of the following events occur: (i) Toxicity has been demonstrated in the effluent and the permit does not contain a toxicity limitation. (H) The PT]lTIE results iadicate that the toxicant (s) represent po]]utant(t) that may be controlled with specific .nttmerica limits, and the Division agrees that the numerical controls aze the most appropriate course of action (iii) The PTllTIE reveals other unique conditions or characteristics, which, in the opinion of the Division, justify th incorporation of unanticipated special conditions in the permit. (iv)The Division may reopen this permit and impose chronic toxicity limns where chronic toxicity is identified.