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Montana Department of Environmental Quality MinorPOTW Permit No.: MT0020141 MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY AUTHORIZATION TO DISCHARGE UNDER THE MONTANA POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with Montana Water Quality Act, Title 75, Chapter 5, Montana Code Annotated (MCA) and the Federal Water Pollution Control Act (the "Clean Water Act"), 33 U.S.C. § 1251 et seq., City of Cut Bank is authorized to discharge from its domestic wastewater treatment plant located at 64 Nyhagen Road, Cut Bank, MT 59427 to receiving waters named Old Maids Coulee, in accordance with discharge point(s), effluent limitations, monitoring requirements and other conditions set forth herein. Authorization for discharge is limited to those outfalls specifically listed in the pe1mit. This permit shall become effective March 1, 2012. This pe1mit and the authorization to discharge shall expire at midnight February 28, 2017. FOR THE MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY Paul Skubinna, Chief Water Protection Bureau Permitting & Compliance Division Modification Date: February 8, 2013 Page 2 of27 Permit No.: MT0020141 TABLE OF CONTENTS Cover Sheet--Issuance and Expiration Dates I. EFFLUENT LIMITATIONS, MONITORING REQUIREMENTS & OTHER CONDITIONS .3 A. DESCRIPTION OF DISCHARGE POINTS AND MIXING ZONE ........................................................................ 3 B. EFFLUENTLIMITATIONS ........................................................................................................................... 4 C. MONITORING REQUIREMENTS·················································································································· 6 D. SPECIAL CONDITIONS ............................................................................................................................... 8 E. PRETREATMENT REQUIREMENTS·············································································································· 8 F. COMPLIANCE SCHEDULE ........................................................................................................................ 10 II. MONITORING, RECORDING AND REPORTING REQUIREMENTS .................................... 11 A. REPRESENTATIVE SAMPLING .................................................................................................................. 11 B. MONITORING PROCEDURES .................................................................................................................... 11 C. PENALTIES FOR TAMPERING ................................................................................................................... 11 D. REPORTING OF MONITORING RESULTS ................................................................................................... 11 E. COMPLIANCE SCHEDULES ...................................................................................................................... 12 F. ADDITIONAL MONITORING BY THE PERMITTEE ...................................................................................... 12 G. RECORDS CONTENTS .............................................................................................................................. 12 H. RETENTION OF RECORDS ........................................................................................................................ 12 I. TWENTY-FOUR HOUR NOTICE OF NONCOMPLIANCE REPORTING ........................................................... 12 J. OTHER NONCOMPLIANCE REPORTING .................................................................................................... 13 K. INSPECTION AND ENTRY ......................................................................................................................... 13 III. COMPLIANCE RESPONSIBILITIES ............................................................................................ 15 A. DUTY TO COMPLY .................................................................................................................................. 15 B. PENALTIES FOR VIOLATIONS OF PERMIT CONDITIONS ............................................................................ 15 C. NEED TO HALT OR REDUCE ACTIVITY NOT A DEFENSE .......................................................................... 15 D. DUTY TO MITIGATE ................................................................................................................................ 15 E. PROPER OPERATION AND MAINTENANCE ............................................................................................... 15 F. REMOVED SUBSTANCES ......................................................................................................................... 16 G. BYPASSOFTREATMENTFACILITIES ....................................................................................................... 16 H. UPSET CONDITIONS ................................................................................................................................ 17 IV. GENERAL REQUIREMENTS ........................................................................................................ 19 A. PLANNED CHANGES ................................................................................................................................ 19 B. ANTICIPATEDNONCOMPLIANCE ............................................................................................................. 19 C. PERMIT ACTIONS .................................................................................................................................... 19 D. DUTY TO REAPPLY ............................................................................ : .................................................... 19 E. DUTY TO PROVIDE lNFORMA TION .......................................................................................................... 19 F. OTHER INFORMATION ............................................................................................................................. 19 'G. SIGNATORYREQUIREMENTS ................................................................................................................... 20 H. PENALTIES FOR FALSIFICATION OF REPORTS .......................................................................................... 21 l. AVAILABILITY OF REPORTS .................................................................................................................... 21 J. OIL AND HAZARDOUS SUBSTANCE LIABILITY ........................................................................................ 21 K. PROPERTY OR WATERRIGHTS ................................................................................................................ 21 L. SEVERABILITY ........................................................................................................................................ 21 M. TRANSFERS ............................................................................................................................................. 21 N. FEES ....................................................................................................................................................... 22 0. REOPENER PROVISIONS .......................................................................................................................... 22 V. DEFINITIONS ................................................................................................................................... 24 Part I Page 3 of27 Permit No.: MT0020141 I. EFFLUENT LIMITATIONS, MONITORING REQUIREMENTS & OTHER CONDITIONS A. Description of Discharge Points and Mixing Zone The authorization to discharge provided under this permit is limited to those outfalls specially designated below as discharge locations. Discharges at any location not authorized under an MPDES permit is a violation of the Montana Water Quality Act and could subject the person(s) responsible for such discharge to penalties under the Act. Knowingly discharging from an unauthorized location or failing to report an unauthorized discharge within a reasonable time from first learning of an unauthorized discharge could subject such person to criminal penalties as provided under Section 75-5-632 of the Montana Water Quality Act. Outfall Description 001 Location: At the confluence of the drainage structure leading from Lagoon No. 2 and Old Maids Coulee at 48° 38.86' latitude, -112° 18.35' longitude. Mixing Zone: None Treatment Works: Two facultative lagoons, aerators/mixers. Patt I Page 4 of27 Permit No.: MT0020141 B. Effluent Limitations Effective immediately and lasting through the term of the permit, the quality of effluent discharged through Outfall 001 shall, as a minimum, meet the limitations as set forth below: 1. Interim Effluent Limits t Limits - Outfall 001 Average Average Maximum Parameter Units Monthly Weekly Daily Limit1 Limit1 Limit 1 mg/L 30 45 NA Biochemical Oxygen Demand (BOD5) lbs/day 161 241 NA BOD5 Removal % 85 NA NA mg/L 100 135 NA Total Suspended Solids (TSS) lbs/day 536 724 NA TSS Removal % 85 NA NA cfu/100 mL 1262 2522 NA E.coli cfu/100 mL 6303 12603 NA Total Residual Chlorine (TRC) mg/L NA NA 0.011 mg/L 19.0 32.6 NA Total Nitrogen as N lbs/day 101.9 174.8 NA mg/L 5.9 9.0 NA Total Phosphorus as P lbs/day 31.6 48.3 NA Oil and grease mg/L NA NA 10 Footnotes: NA - Not applicable 1. See Definition section for explanation of terms. 2. Geometric mean; applies during the period April 1 through October 31. 3. Geometric mean; applies during the period of November 1 through March 31. pH: Effluent pH from Outfall
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