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Blackwell, Kimberly [EHD] From: Blackwell, Kimberly [EHD] Sent: Friday, April 21, 2023 4:12 PM To: Allan Dudding; Woldearegay, Shewit-Tassew [EHD]; EH-UST Cc: Presto, Carol [EHD]; Brad Jackson; Regina Bussard; Williamson, Griffin Subject: RE: 3425 Tracy Blvd, Tracy Soil Sampling Hi Allan, Thank you for the email. I will give it to the area inspector. Re: 3425 Tracy, Tracy Kimberly Blackwell,Senior Office Assistant San Joaquin County Environmental Health Department 1868 E. Hazelton Ave., Stockton, CA 95205 Phone: (209)468-34271 Fax: (209) 468-3433 EHD Website: htti)s://www.smd-ov.orF-F/department/envhealth/ Training Website: https://ehd-training.sigov.org/app/ —COUNTY— GIrlQ#nlSS gfa-s here. From:Allan Dudding<AIIan.Dudding@AnteaGroup.US> Sent: Friday, April 21, 2023 4:01 PM To: Woldearegay, Shewit-Tassew [EHD] <stwoldearegay@sjgov.org>; EH-UST<ust@sjgov.org> Cc: Presto, Carol [EHD] <cpresto@sjgov.org>; Brad Jackson<Brad.Jackson@anteagroup.us>; Regina Bussard <Regina.Bussard@anteagroup.us>; Williamson, Griffin <griffin.williamson@bp.com> Subject: RE: 3425 Tracy Blvd,Tracy Soil Sampling Thank you for the reply. Here are the laboratory results for the soil samples collected on 4/12 and the soil waste composite samples collected on 4/17. We did detect low concentrations of hydrocarbons in the samples.The environmental case at this station was closed in 2006 by your office, and at the time there were no post-remediation soil analytical data.The only soil data available for this part of the property was from the 1993 fuel system excavation. I've prepared a summary of the current soil results and compared them to the 1993 sample results. Name Date TPHG Benzene Naphthalene L1 7/21/1993 3.2 0.05 -- L3 7/21/1993 1,600 12 -- UDC-1 4/12/2023 0.238 0.00692 <0.00587 PL-1 4/12/2023 <0.122 0.000482 J <0.00612 L5 7/21/1993 14 0.16 -- UDC-2 4/12/2023 <0.119 0.000520 J <0.00596 PL-2 4/12/2023 <0.117 0.00110 J <0.00585