Notice of Request for Approval of Pretreatment Program Modification PO# Industrial Pretreatment-445001

PUBLIC NOTICE Notice of Request for Approval of Pretreatment Program Modification Issued by: City of Wilsonville Notice Published: Wilsonville Spokesman August 11, 2022 Written comments due by: September 15, 2022 WHAT IS PROPOSED: City of Wilsonville proposes to modify local limits used to regulate non-domestic wastewater discharges to the City’s municipal sewer system. NEED FOR THE MODIFICATION: In accordance with federal regulations, the City is required to administer an industrial pretreatment program, one element of which is a requirement that the City periodically evaluate and revise local limits, if needed. DESCRIPTION OF PROPOSED MODIFICATIONS: The local limits evaluation completed in 2022 recommends increase discharge limits for the control of conventional, non-conventional and toxic pollutants discharges from industrial users to the City’s sanitary sewer system. The changes will require modification and/or reissuance of existing wastewater discharge permits issued to industrial users by the City. WHERE TO FIND THE DOCUMENTS: The documents are available for examination at the City of Wilsonville Public Works Department at 30000 SW Town Center Loop E, Wilsonville, OR 97070. Telephone: (503) 682-4092. Office hours are 7:30 am to 4:30 pm Monday through Friday. The Local Limits Technical Memorandum along with other resources are also available on the City’s Pretreatment website page at https:// www.ci.wilsonville.or.us/publicworks/page/industrial- pretreatment. PUBLIC NOTICE PROCESS: This notice is intended to serve as the notice of request for approval of pretreatment program modification required by 40 CFR 403.18 (b)(1)(ii) and 403.11 (b)(1)(i). Anyone may submit comments to City of Wilsonville within 35 calendar days. If there is significant public interest in this proposal (i.e. 10 or more persons request a hearing), a public hearing will be conducted by the City, pursuant to 40 CFR403.11. The request for public hearing shall be filed within the comment period and shall indicate the interest of the person filing the request and the reasons why a hearing is warranted. Written comments on the proposed modification must be received by 5:00 pm on September 7, 2022 at the City of Wilsonville City Hall in order to be considered. The mailing address is: City of Wilsonvillle, 29799 SW Town Center Loop E, Wilsonville, OR 97070. After the public notice process, the City will transmit the proposed modification and corresponding report to Oregon Department of Environmental Quality (DEQ) for final approval. After review DEQ will forward the proposed modification to the Environmental Protection Agency (EPA) and, barring either public or EPA comments which warrant reconsideration, DEQ will issue a final approval and incorporate the modification into the City’s NPDES permit. Publish August 10, 2022 WS252427

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