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PSA - SB Dam 2024 DSSMR Compliance – Christopher B. Burke Engineering, LLC
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PSA - SB Dam 2024 DSSMR Compliance – Christopher B. Burke Engineering, LLC
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Board of Public Works
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12/12/2023
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<br /> <br /> <br /> <br /> <br /> <br />2024 South Bend Dam Technical Assistance November 21, 2023 <br />Attachment A Page 1 <br />Christopher B. Burke Engineering, LLC <br /> <br />220 West Colfax Avenue Suite 500 South Bend, IN 46601 574.282.8001 cbbel-in.com <br /> <br />ATTACHMENT A <br />The South Bend Dam (License No. 7569) is a low-head, run-of-the-river dam on the St. Joseph River near <br />downtown South Bend. The Federal Energy Regulatory Commission (FERC) requires that a Dam Safety <br />Surveillance and Monitoring Report (DSSMR) be completed annually to review instrumentation and <br />monitoring data to determine if potential failure modes are developing. It is our understanding that the City of <br />South Bend (City) would like Burke to complete the 2024 DSSMR (covering the 2024 calendar year) and other <br />tasks related to ongoing FERC compliance in 2024. <br />The scope of work will include the following tasks: <br />Task 1 – 2024 Annual Inspection: In preparation for the 2024 DSSMR and to fulfill the annual visual <br />inspection requirement, a Burke registered professional engineer will perform visual observations of safely- <br />accessible portions of the dam and appurtenant structures. Since the South Bend Dam is an in-channel <br />structure, much of the dam and its appurtenances are not readily accessible for visual observation. Burke’s <br />observations will be focused on potential dam safety concerns to determine if the dam appears safe for <br />continued operation. It is assumed that the annual inspection will occur on the same date as the gate operation <br />certification. <br />Task 2 – 2024 DSSMR Report: Burke will review pertinent information regarding the dam necessary to <br />complete the DSSMR which may include previous DSSMR reports and other information contained in either <br />the City’s or IDNR’s file for the dam as well as bathymetric survey or underwater inspection reports completed <br />by the University of Notre Dame (license exemption holder) or its consultants. It is expected that the City will <br />provide the data from the last year for the two staff gages located along the East Race. <br />Burke will prepare a brief written DSSMR in accordance with FERC guidance outlined in Chapter 14 of <br />Engineering Guidelines for the Evaluation of Hydropower Projects. The report will be completed based on Burke’s <br />observations in 2024 as well as quarterly inspection and staff gage data provided by the City. The level of detail <br />and content of the report is expected to be similar to previous DSSMRs prepared by Burke. We will submit the <br />report to the City in draft format before finalizing. It is expected that the University of Notre Dame or its <br />consultants will file the report with FERC and will also prepare the DSSMR covering the hydroelectric facility. <br />The DSSMR report prepared by Burke will not include the hydroelectric facility. <br />Task 3 – Update DSSMP: Burke will update the Dam Safety Surveillance and Monitoring Plan (DSSMP) for <br />the South Bend Dam as needed based on comments received from FERC and changes that may have occurred <br />since the last revision. We will submit the updated DSSMP to the City in draft format before finalizing. It is <br />expected that the University of Notre Dame or its consultants will file the report with FERC concurrently with <br />the 2024 DSSMR and will also update the DSSMP for the hydroelectric facility as required. The DSSMP updates <br />prepared by Burke will not include the hydroelectric facility. <br />Task 4 – Gate Operation Certification: The Spillway Gate Operation Certificate must be completed each <br />year. Burke staff will observe operation of the three East Race gates by City staff and will assist in preparation <br />of the certificate to submit to FERC. Burke will prepare a cover letter to accompany the certificate and will <br />send it to the University of Notre Dame or its consultants for submittal to FERC. <br /> <br />
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