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2 bmillman@advancedgeo.biz http://www.advancedgeo.biz/ “Working in Partnership with People, Business and the Environment” This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please contact the sender by email/fax and destroy all paper and electronic copies of the original message. On Jul 9, 2021, at 9:00 AM, Frier, William <Frier.William@epa.gov> wrote: Barbara and Brian, I am writing to let you know that although I am available, our colleagues from the Waterboard and County Health Department will not be able to make our meeting on Tuesday of next week. I am happy to still meet at that time if you would like, otherwise we can push by one week (to Tuesday, July 20 at either the same time or another time that works for you). In looking over the CCR you sent previously, I realized that the dioxin/furan analysis you already completed can also provide PCB congener data if requested from the laboratory without any additional analysis (and presumably without additional cost?). Would you please request that information from the laboratory and provide it to us? This will help us understand all 209 PCB congeners and the potential presence of dioxin-like PCBs (e.g. PCB congener 126), which could impact our future decisions at the site. I think it just makes good sense to see this data given that the actual analysis has already been conducted. Please let me know your preference on meeting at the original time (with just me) or rescheduling. Regardless, I’m wishing you the best. Thank you, Patrick W. Patrick Frier Physical Scientist - Permits Section Land, Chemicals and Redevelopment Division U. S. Environmental Protection Agency - Region 9 75 Hawthorne Street, LND-4-2 San Francisco, CA 94105 Phone: (415) 972-3984 The RCRA Program in Region 9 accepts all formal correspondence electronically: R9LandSubmit@epa.gov Please contact Callado.Jinky@epa.gov prior to submitting Confidential Business Information.