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From: Buehler, Alan@Waterboards <br />To: Morgan Hargrave; Patten. David R. <br />Subject: Chevron #9-4054, 2103 Country Club Blvd, Stockton - 6/11/18 Meeting Summary <br />Date: Monday, June 11, 2018 3:10:20 PM <br />Attachments: image001.onq <br />CVX 9-4054 WOT Soil Data (1988).odf <br />CVX 9-4054 MW-4C Soil Data (2006).odf <br />Morgan/Dave — <br />Thanks for your time this afternoon to discuss this project. <br />In the meeting, the following was agreed upon: <br />1. Wells related to the neighboring case to the west, Boulevard Auto (2151 Country Club Blvd), <br />provide sufficient data to delineate petroleum impact to GW. Proposed and approved wells <br />MW-16B and MW-17B, for delineation of petroleum impact to B-zone GW, are no longer <br />necessary. <br />2. Additional shallow soil assessment is needed in the vicinity of the former waste oil tank <br />(WOT). <br />Assessment of soil is needed between 0-5 and 5-10 ft bgs for evaluation of LTCP Direct <br />Contract and Outdoor Air Exposure criteria. Analysis should include naphthalene and <br />PAHs. <br />In order to properly assess the nature of the release, analysis of soil below 11 ft bgs is <br />needed for TPHg, TPHd, TOG, full-suite VOCs & SVOCs, PCBs, and Title 22 metals. <br />3. GHD will submit a WP for shallow soil assessment. <br />4. The resulting Assessment Report will include an LTCP Evaluation of Site conditions. <br />Please submit the discussed WP by 10 Aug 2018. Please also include a discussion of Blvd Auto GW <br />data and delineation of #9-4054 impact to GW. <br />Please also note that in a 9 Jan 2018 conference call with Jaff Auchterlonie (Stantec) and Dave <br />Patten, it was agreed that previously proposed and approved well MW-15, for delineation of <br />groundwater east of MW-6, was no longer needed due to decreasing concentrations in MW-6. <br />For your convenience, below is the related WOT soil data I have found: <br />Based on Attachment 3 of the Arcadis's 19 Feb 2013 Low-Threat Closure Request, the WOT <br />pit was excavated to 11 ft bgs. Soil sample "#6" was collected at 11 ft bgs, and analyzed only <br />for TPHd/BTEX/Pb/Cd/Cr/Zn. Soil was collected from nearby MW-4C at 5 and 10 ft bgs, <br />though analyzed only for TPHg/BTEX/MTBE. <br />I have attached a copy of the WOT soil data from Arcadis's 2013 report and Blaine Tech's <br />1988 Underground Storage Tank Removal and Sampling Log, as well as MW-4C soil data. <br />Please let me know if you have any questions or concerns. <br />AL a tA. M. -g.i.telder, P.G.