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PART II Page No. 22 Permit No.: CO-0044776• iii) The standards or regulations "on which the permit was based have been changed by promulgation of amended standazds or regulations or by judicial decision after the pernu[ was issued. Permits maybe modified during their terms for this cause only as follows: (A) The permit condition requested to be modified was based on a promulgated effluent limitation guideline, EPA approved water quality standard, or an effluent limitation set forth in 5 CCR 1002-62, § 62 et seq.; and (B) EPA has revised, withdrawn, or modified that portion of the regulation or effluent limitation guideline on which the pemut condition was based, or has approved a Commission action with respect to the water quality standazd or effluent limitation on which the permit condition was based; and (C) The permittee requests modification after the notice of final action by which the EPA effluent limitation guideline, water quality standazd, or effluent limitation is revised, withdrawn, or modified; or (D) For judicial decisions, a court of competent jurisdiction has remanded and stayed EPA promulgated regulations or effluent limitation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 that portion of the regulations or guidelines on which the permit condition was based and a request is filed by the perntittee in accordance with this Regulation, within ninety (90) days of judicial remand. iv) The Division determines that good cause exists to modify a pemrit condition because of events over which the perntittee has no control and for which there is no reasonable available remedy. v) The pemuttee has received a variance. vi) When required to incorporate applicable toxic effluent limitation or standazds adopted pursuant to § 307(a) of the Federal act. vii) When required by the reopener conditions in the permit. viii)As necessary under 40 C.F.R. 403.8(e), to include a compliance schedule for the development of a pretreatment • program. ie) 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 Pemtit System Regulations. x) To establish a pollutant notification level required in Section 61.8(5) of the Colorado Dischazge Permit System Regulations. xi) To correct technical mistakes, such as errors in calculation, or mistaken interpretations of law made in detetmining permit conditions, to the extent allowed in Section 61.10 of the Colorado State Discharge Pemtit 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 Dischazge Pemrit System Regulations. C. At the request of a permittee, the Division may modify or terminate a permit and issue a new permit if the following conditions are met: i) The Regional Admutistrator has been notified of the proposed modification or termination and does not object in writing within thirty (30) days of receipt of notification, ii) The Division fmds that the pernrittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modifications or termination; iii) Requirements of Section 61.15 of the Colorado Discharge Pemut System Regulations have been met, and iv) Requirements of public notice have been met. d. Permit modification (except for minor modifications), termination or revocation and reissuance actions shall be subject to • the requirements of Sections 61.5(2), 61.5(3), 61.6, 61.7 and 61.15 of the Colorado Discharge Pemut System Regulations. The Division shall act on a permit modification request, other than minor modification requests, within 180 days of receipt thereof. Except for minor modifications, the terms of the existing pemvt govern and are enforceable until the newly issued permit is formally modified or revoked and reissued following public notice.