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HomeMy WebLinkAboutNC0029033_IUP mod_20210527DocuSign Envelope ID: 0A47681 3-4947-441 B-8A93-DF97A984A85B ROY COOPER Governor DIONNE DELLI-GATTI Secretary S. DANIEL SMITH Director NORTH CAROLINA Environmental Quality City of Raleigh 5/27/2021 Attn: Kevin Heavner, Pretreatment Specialist PO Box 590 Raleigh, NC 27602 Transmitted via email to kevin.heavner@raleighnc.gov Subject: Pretreatment Review of Industrial User Permit Modification Program: City of Raleigh WWTP: Neuse River Resource Recovery Facility - NPDES #:NC0029033 Wake County Dear Kevin Heavner: The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit (IUP) modification submitted by the City of Raleigh for the following Significant Industrial User (SIU). IUP # STM1 SIU NAME STM, Inc. The IUP modification was received by the Division on April 30, 2021. The review indicates that the IUP is adequate and meets the minimum requirements of 15A NCAC 2H .0905 - .0916 and 40 CFR 403.8(f)(1)(iii). The IUP was modified to increase the daily maximum limit for cadmium from 0.01 mg/L to 0.07 mg/L, consistent with CFR 433. Regardless of this approval action today, within 180 days of the effective date of any reissued/modified NPDES permit, the Permittee would be required to submit to the Division a written technical evaluation of the need to revise local limits (i.e., an updated IWS, or documentation of why one is not needed). This action may include revising, updating, or adding to the list of SIUs regardless of timeframe. Federal and State pretreatment regulations require the local delegated pretreatment program to effectively control and document the wastewater discharge from SIUs to the POTW. It is the POTW's responsibility to ensure that these objectives are consistently met. Thank you for your continued support of the Pretreatment Program. If you have any questions or comments, please contact Diana Yitbarek at 919 707-9130 [diana.yitbarek@ncdenr.gov] or the Unit Supervisor, Michael Montebello, at 919 707-3624[michael.montebello@ncdenr.gov]. Sincerely, DocuSigned by: L at/ L inkath "aLl C464531431644FE... for S. Daniel Smith, Director Division of Water Resources dy/Raleigh.iup.088 Ec: Cheng Zhang, RRO Central Files (Laserfische) and Municipal Unit File NORTH CAROLINA E _ Department of Environmental Duaii� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000