Table of Contents I. Introduction .................................................................................................................... I-5 II. Executive Summary ..................................................................................................... II-7 A. Nine Minimum Controls (NMC) ................................................................................................................................ II-7 B. LTCP Documentation ............................................................................................................................................. II-10 C. Compliance Schedule ............................................................................................................................................ II-13 D. CSO Outfall Monitoring .......................................................................................................................................... II-14 E. In-stream Monitoring .............................................................................................................................................. II-14 F. Performance Report ............................................................................................................................................... II-14 G. Other Information ................................................................................................................................................... II-15 III. Nine Minimum Controls .......................................................................................... III-17 A. Proper Operation and Maintenance (O&M) ......................................................................................................... III-18 B. Maximize use of the Collection System for Storage .......................................................................................... III-19 C. Review and Modification of Pretreatment Programs ......................................................................................... III-20 D. Maximization of Flow to the POTWs for Treatment ............................................................................................ III-21 E. Prohibition of CSOs during Dry Weather ............................................................................................................ III-22 F. Control of Solid and Floatable Materials in CSOs .............................................................................................. III-24 G. Pollution Prevention .............................................................................................................................................. III-25 H. Public Notification ................................................................................................................................................. III-26 I. Monitoring to Characterize CSO Impacts and the Efficacy of CSO Controls .................................................. III-27 IV. LTCP Documentation ............................................................................................... IV-29 A. Characterization and Modeling of the CSO System ........................................................................................... IV-29 B. Public Participation Plan ...................................................................................................................................... IV-34 C. Consideration of Sensitive Areas ........................................................................................................................ IV-35 D. Evaluation of Alternatives .................................................................................................................................... IV-36 E. Cost/Performance Considerations ...................................................................................................................... IV-37 F. Operational Plan .................................................................................................................................................... IV-38 G. Maximizing Treatment at the Existing POTW Treatment Facilities ................................................................... IV-39 H. Implementation Schedule ..................................................................................................................................... IV-40 I. Post-Construction Compliance Monitoring Program......................................................................................... IV-40 V. Compliance Schedule ................................................................................................ V-41 J. Implementation Requirements .............................................................................................................................. V-41 A. Major CSO Control Projects .................................................................................................................................. V-43 B. Sewer Separation Projects .................................................................................................................................... V-46 I-1 C. LTCP Overall ...........................................................................................................................................................V- 50 VI. CSO Outfall 102 and 205 Monitoring Data............................................................ VI-55 A. Missouri River Wastewater Treatment Plant (MRWWTP) – Outfall 102 ............................................................ VI-55 B. 64th and Dupont Retention Treatment Basin - Outfall 205 ................................................................................. VI-55 VII. In-Stream Monitoring Data ................................................................................... VII-57 A. City In-Stream Monitoring .................................................................................................................................... VII-57 B. USGS Sampling and Analysis ............................................................................................................................. VII-59 VIII. Performance Report ................................................................................................ VII-63 A. CSO Occurrence Inspections ............................................................................................................................. VIII-63 B. Evaluation of Completed Controls ..................................................................................................................... VIII-65 C. Wet Weather CSO Occurrences ......................................................................................................................... VIII-66 D. Percent by Volume Captured ............................................................................................................................. VIII-67 IX. Other Information ..................................................................................................... IX-69 A. MRWWTP Bank Stabilization Project .................................................................................................................. IX-69 B. EPA Coordination Efforts ..................................................................................................................................... IX-69 C. Reduction in the Number of Overflow Events .................................................................................................... IX-70 D. Reduction in the Number of CSO Outfalls .......................................................................................................... IX-70 E. Receiving Water Quality ....................................................................................................................................... IX-70 F. City of Omaha RNC Program ................................................................................................................................ IX-71 G. Rate Information .................................................................................................................................................... IX-72 H. Material Management ............................................................................................................................................ IX-72 Attachment 1 – O & M Procedure Updates and Revisions Summary........................................ 1 Attachment 2 – Dry Weather Overflow Media Release ............................................................... 1 Attachment 3 – Public Participation Report ................................................................................... 1 Attachment 4 – LTCP Annual Project Progress Reports (APPR) ................................................ 1 Attachment 5 –CSO Program: Change Notification and Request (CNR) .................................. 1 Attachment 6 – Wet Weather CSO Occurrences Report............................................................... 1 Attachment 7 – USGS Missouri River Monitoring Provisional Data ......................................... 1 I-2 Tables and Figures FIGURE 1- 1: CSO OUTFALL LOCATIONS .............................................................................................................................. I-6 FIGURE ES 2- 1: MRWWTP OPERATIONAL PLAN .............................................................................................................. II-12 FIGURE ES 2- 2: COMPLIANCE STATUS