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Backus, Garrett [EHD] <br />From: <br />Scott Renfrew <srenfrew@iesengineering.net> <br />Sent: <br />Tuesday, October 12, 2021 5:51 PM <br />To: <br />Florido, Elianna [EHD]; Tony Grizelj <br />Cc: <br />Rob Ashe; Chad Yelm; Ericson Mercado; Backus, Garrett [EHD]; Henry, Michelle D [EHD]; <br />Manzo, Elena K. [EHD]; Baker, Lydia [EHD] <br />Subject: <br />RE: Metal Finishing Solutions RTC Follow Up <br />Attachments: <br />Response to email_20210930.pdf, MFS Stockton Waste Plan_w Lab_20211006.pdf; <br />20238 MFS Stockton Tank Certification -Interior Tank Observation Commentary <br />2021-10-11 - esigned.pdf <br />CAUTION: This email is originated from outside of the organization. Do not click links or open attachments unless you recognize the <br />sender and know the content is safe. <br />Elianna, <br />I have addressed information requested in your September 30, 2021 email (below) and have included the required <br />information — attached. <br />Please note that two of the items included in the information request are addressed separately for the Response to <br />email 20210930 file. <br />Permit By Rule Treatment Inspection: <br />1. Violations 101, 203- <br />a. Provide a timeline as to when the PE will complete an internal inspection of the tanks. Have the PE re- <br />certify the tank assessment once the PE completes the internal inspection. <br />i. Response: Juliette Freestone PE & Project Manager for Morris Shaffer Engineering, LLP will <br />reach out to Elianna Florido - San Joaquin County Environmental Health Department to discuss <br />internal inspection details and resolution of these violation —attached. <br />2. Violation 112 — Submit a complete treatment system waste analysis plan, which includes a separate chemical <br />analysis at the point of waste generation for rinse tanks 3,4,6,7,9,10, and 11, and clean out of the secondary <br />containment under the processing line, before the wastes enter the treatment system. The data must <br />demonstrate that the fluoride or metal content of the waste streams do not exceed hazardous waste regulatory <br />levels. <br />i. Response: The Treatment System Waste analysis plan for rinse tanks 3,4,6,7,9,10, and 11 will be <br />submitted separately to Elianna Florido - San Joaquin County Environmental Health Department, <br />pending sampling laboratory analysis report review and incorporation into the Waste Analysis <br />Plan. <br />ii. Response: Waste Analysis Plan with sample laboratory analysis — attached. <br />1. Note — on the date of sampling, Friday September 10, 2021, the secondary containment <br />under the process line was dry. No sample was taken of the secondary containment. <br />Please do not hesitate to contact me with any questions or comments. <br />Thank you, <br />Scott Renfrew, Senior Project Manager <br />