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January 10, 2025 <br />Board of Public Works <br />City of South Bend <br />1316 County City Building <br />227 West Jefferson Boulevard <br />South Bend IN 46601 <br />RE: Update to Industrial Wastewater Discharge Permit <br />Dear Board Members: <br />The Division of Environmental Service has received an updated discharge flow volume from <br />Amazon Data Services, Inc (ADS). The increased flow volume is due to delays in the installation <br />of an attenuation tank which would slow down and hold discharge flow. The newly estimated <br />maximum flow is 1.58 MGD which would likely occur in the months of June, July, and August. <br />The increase in flow has changed ADS classification under the City’s Industrial Pretreatment <br />Program to a class A industry. The permit briefing memo has been updated to reflect best <br />estimates of flow and classification. <br />The Division of Environmental Services recommends approving the new Industrial Discharge <br />Permit for Amazon Data Services, Inc at the January 14, 2025, Board of Public Works Meeting. <br />This facility does have the potential to impact the POTW due to their discharge of concentrated <br />non-contact cooling water. The Industrial Pretreatment Program has crafted a 16-month term <br />permit to obtain long-term data. The Significant industrial user permit number will be added <br />once sewer account has been established. <br />If you should have any questions, please do not hesitate to contact me (574) 235-5798 or at <br />sshane@southbendin.gov. <br />Sincerely, <br />Serena Lozano-Shane <br />Pretreatment Manager <br />City of South Bend <br />Division of Environmental Services, Department of Utilities <br />(574) 235-5798 <br />sshane@southbendin.gov <br />Enclosure(s) <br />-Permit Briefing Memo <br />CITY OF SOUTH BEND JAMES MUELLER, MAYOR <br />DEPARTMENT OF PUBLIC WORKS <br />ERIC HORVATH, DIRECTOR