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Pr~RT II Page No. 42 Petmit No.: CO-00027 i existing permit only to [he extent allowed under Section 61.10 of the Coll Irado Discharge Permit System Regulations. iii) The standards or regulations on which the permit was based have been changed by prornul gation of amended standards or regulations or by judicial decision after the permit was issueid_ Permits may be modified during their terms for this cause only as follows: (A) The permit condition requested to be modified was based on a pront~ilgated effluent limitation guideline, EPA approved water quality standard, or an effluent limitation set forth in ~ CCR 1002-62, § 62 et seq.; and (B) EPA has revised, withdrawn, or modified that portion of the regulation or effluent limitation guideline on which the permit condition was based, or has approved a Commission action with respect to the water quality standard or affluent limitation on which die pemtit condition was based; and (C) The pemmittee requests modification after the notice of final action by which the EPA effluent limitation guideline, water quality standard, or efthent limitation is revised, withdrawn, or modified; or (D) For judicial decisions, a court of competent jurisdiction has remanded and stayed EPA promulgated regulations or effluent limitation guidelines; if the remand and stay concern [hat portion of the regulations or guidelines on which the permit condition was based and a request is filed by the permittee in accordance with this Regulation, within ninety (90) days of judicial remand- d. iv) The Division determines that good cause exists to modify a permit condition because of events over which the pemmittee has no control and for which there is no reasonable available remedy. v) The permittee has received a variance. vi) When required to incorporate applicable toxic effluent limitation or standards adopted pursuant to § 307(a) of the Federal act. • vii) When required by the reopener conditions in the permit. viii)As necessary under 40 CFR 403.3(e), to include a compliance schedule for the development of a pretreatment program. ix) When the level of discharge of any pollutant which is not limited in the permit exceeds the level which can be achieved by the technology-based treatment requirements appropriate to the permittee under Section 61.8(2) of the Colorado Discharge Permit System Regulations. x) To establish a pollutant notification level required in Section 61.8(5) of the'Co]orado Discharge Permit System Regulations. xi) To correct technical mistakes, such as errors in calculation, or mistaken interpretations oflaw made in detemtining pemtit conditions, to the extent allowed in Section 61.10 of the Colorado State Discharee Permit System Regulations. ~~ xii) When required by a permit condition to incorporate a land application plan for beneficial reuse of sewage sludge, to revise an existing land application plan, or to add a land application plan. , xiii) For any other cause provided in Section 61.10 of the Colorado Discharge Permit System Regulations. c. A[ the request of a permittee, the Division may modify or terminate a pemtit and issue a new permit if the following conditions are met i) The Reeional Administrator has been notified of the proposed modification or termination and does not object in wri[ins within thirty (30) days of receipt of notification, ~ , ii) The Division Ends that the permittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modifications or termination; iii) Requirements of Section 61.1> of the Colorado Discharee Permit System F:egulations have been met, and • iv) Requirements of public notice have been ntet. Permit modification (except for minor modifications), termination or revocation and rcissuance actions shall be subject to Ute requirements of Sections 61.5(2), 6 LS(3 ), 61.6. 61.7 and 61. I S of the Colorado Discharge Permit System Regulations. The Division shall act on a permit modification request, other than minor modtfication requests..vithin 140 days of receipt thereof Except for minor modifications. the terns of the existing pemtit govern and are enforceable until , the newh~ issued pemtit is formally modified or revoked and reissued followingpublic notice.