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• � Page 4 <br /> Brusca File No. 137-002 February 12,2018 <br /> Murphy Parkway Property Soil Gas Monitoring Wells <br /> the SJCEHD has indicated that VP-1 should be abandoned in conjunction with the new <br /> monitoring well installation work. <br /> The soil gas monitoring well VP-1 was abandoned on January 16, 2018 via over-drilling with a <br /> track-mounted drill rig. The abandonment work was performed by a licensed C-57 drilling <br /> contractor with oversight by the SJCEHD. Following complete over-drilling of the soil gas <br /> monitoring well, the resulting borehole was sealed with neat cement grout via tremmie in accord <br /> with SJCEHD requirements. <br /> SOIL GAS MONITORING <br /> The required soil gas monitoring program consists of monthly monitoring for a period of one <br /> year, and quarterly monitoring for a period of four years thereafter. The first <br /> monitoring/sampling of the new soil gas monitoring wells was conducted on January 26, 2018, <br /> following a 10-day equilibration period following well installation. The January 2018 <br /> monitoring results will be presented under separate cover in the near future. The February 2018 <br /> sampling/monitoring event is planned for later this month. <br /> CLOSING <br /> This report will be submitted to the SJCEHD, CalRecycle, and the CVRWQCB. Additionally, <br /> Well Completion Reports will be submitted to the California Department of Water Resources as <br /> required. If you have any questions or require additional information, please contact the <br /> undersigned at(916) 677-1470. <br /> Sincerely, <br /> BRUSCA ASSOCIATES, INC. <br /> BRUSCA <br /> t4o. 1948 <br /> aiTm{E4 <br /> ENG iNEERiNG <br /> Jo Brusca GEOLOGW �Q <br /> ncipal Engineering Geologist OF CAL�Fd¢? <br /> Certified Engineering Geologist No. 1948 <br /> Attachments: Plate 1, Vicinity Map <br /> Plate 2,Site Map <br /> Plate 3,Detail Map <br /> Plate 4,Log of Soil Gas Monitoring Well, SGMWI <br /> Plate 5,Log of Soil Gas Monitoring Well, SGMW2 <br /> SJCEHD Well Permit Documentation <br /> JB.jb <br />