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08 January 2020 AdvancedGeo <br /> An Em�aye"wnedCumpa" <br /> Project No. 19-4848 ,,, <br /> Page 3of3 M <br /> of the soil samples. In addition, VOCs, SVOCs and PCBs were also not detected <br /> in the samples. <br /> • Metals arsenic, barium, chromium, cobalt, copper, lead vanadium and zinc were <br /> detected in all three soil samples at low concentrations. <br /> The laboratory report and chain of custody are included as Appendix B. <br /> 4.0 WASTE DISPOSAL <br /> On 27 December 2019 a total of 200 gallons of waste water and three drums were <br /> removed from the site by Instrat Inc. of Rio Vista, California. Waste removed was <br /> transported to Instrat's facility where it was properly disposed. A copy of the waste <br /> manifest documenting the removal is included in Appendix C. <br /> 5.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Based on field observations and analytical data, there is no evidence of an unauthorized <br /> release from the UST. AGE recommends that the SJCEHD grant a closure for this UST <br /> case. <br /> Don't hesitate to contact AGI if you have any questions. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. O�� Por0 Lo P <br /> No.6708 <br /> Robert-E. Marty Robert D. Loeffler <br /> President Vice President <br /> California Professional Geologist #6709 <br /> Attachments <br />