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Page 5 <br /> December 20,2023 <br /> Brusca File No. 260-004 Groundwater Monitoring Wells Workplan <br /> diesel, and motor oil-range petroleum hydrocarbons by EPA Method 8015B and volatile organic <br /> compounds (VOCs) by EPA Method 8260B, including the fuel oxygenate MTBE. Internal <br /> laboratory QA/QC data will be presented along with the laboratory report. <br /> REPORT <br /> Following the installation of the groundwater monitoring wells, initial groundwater sampling, <br /> and the analytical testing, we will prepare a summary report which will include: descriptions of <br /> our procedures and observations; scaled site plan drawings; monitoring well logs; the laboratory <br /> data; survey data; the calculated groundwater flow direction; discussion regarding the results; <br /> and, the signature and stamp of the Professional Geologist in charge of the project. The report <br /> will be submitted to the CVRWQCB and will be uploaded to the State Water Resources Control <br /> Board's GeoTracker database. <br /> As indicated earlier in this Workplan, an objective of monitoring well MW3 is to evaluate/define <br /> the westerly extent of the diesel groundwater plume as required by the CVRWQCB. In the event <br /> that groundwater data from MW3 are not sufficient to define westerly extent of the plume (e.g., <br /> if groundwater from MW3 exhibits an elevated concentration petroleum hydrocarbons), our <br /> report will include a description of a planned step out boring further to the west for additional <br /> groundwater sampling for plume definition. <br /> CLOSING <br /> This Workplan will be submitted to the CVRWQCB for review and comment prior to <br /> implementing the work. Additionally, we will upload this document to the State Water <br /> Resources Control Board's GeoTracker database system. <br /> If you have any questions or require additional information, please contact the undersigned at <br /> (916) 677-1470. <br /> Sincerely, <br /> BRUSCA ASSOCIATES, INC. <br /> arc ,1DSFPH <br /> gFiL1SCA <br /> CE3�T1rIE4 <br /> ENGiNEERI G <br /> Jo Brusca <br /> u^T GEOLOGIST �7 <br /> r* cipal Engineering Geologist "� OF CA��F�'�- <br /> ertified Engineering Geologist No. 1948 <br /> Attachments: Plate 1, Vicinity Map <br /> Plate 2, Site Map <br /> Plate 3,Farm Facility Map <br /> Plate 4,Planned Groundwater Monitoring Well Locations <br />