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San Joaquin County <br /> ����y^����00����0�� ����8�� U�������xt�^��K�t DIRECTOR <br /> =�� -- �� - ~ Donna Horan.ns*a <br /> ZZ 1868 East Hazelton Avenue <br /> peumevmCoonomwrona <br /> !�tockton, ��alifornia55205-6232 nuuo,twxo/nonn.nEHG <br /> Jeff ca,muuuo.nsna.RDI <br /> kV�bai*e' w~*w/a�Jouo/Dxehd xaoovpu|e»ncno <br /> ' <br /> Phone: (209)468-3420 Linda Tumawu.nsHs <br /> Fox/ (209)464-0138 <br /> November O. 2O12 <br /> Be lTerry 8argioK8oneeoa|ch/ <br /> Chavvon Environmental Management Company Atlantic Richfield Company <br /> G1U1Bollinger Canyon Road POBox 1257 <br /> SaiRamon, CA 94583 San Ramon, CA 94583 <br /> Subject: Chevron#Q-4275and ARCO#2133 <br /> 2805 &28O8Ben Holt Drive <br /> Stockton, CA 95207 <br /> The San Joaquin County Environmental Health Department (EHD) has received a No Further <br /> An//on Required Concurrence letter from the Central Valley Regional Water Quality Control <br /> Board (CVRVV{3CB) dated September 20. 2012. for the above subject site. /t is now necessary <br /> to plan the destruction of all m^oUo installed as part of your site investigation and remedial action, <br /> as the EHD will not issue a Case Closure Letter for this site until the wells have been properly <br /> deE,troyed and all onsite waste nnateho| have been removed and properly disposed of. The <br /> vve|(e are to be destroyed m//thin SO days of the date of this letter. <br /> P|osee submit m work plan that details the conditions and construction of the xvaUa and the <br /> me-.-hods and materials to be used to destroy them. To be issued m well destruction permit the <br /> prn0000| must comply with the Gan Joaquin County Well Standards naquinannante. including: <br /> " VVeUo that have laboratory data from the |mat groundwater sampling avant that <br /> demonstrate the presence of any contaminants of concern are to be destroyed by <br /> removing all the contents of the original borehole (conductor casing, well casing, screen, <br /> filter pack, grout sealant); the cleared borehole is then to be sealed with neat cement by <br /> grouting from the bottom uptomdepth ofthree feet below grade. <br /> * All wells with unknown construction and/or located in on area of known contamination <br /> are to be destroyed by nanonv/ng all the contents of the original borehole as described <br /> above; the cleared borehole is then to be sealed with neat cement bygrouting from the <br /> bottom uptnmdepth ofthree feet below grade. <br /> * VVo|/a that have laboratory data from the last sampling event that report non-detectable <br /> concentrations of contaminants of uonmarn, with acceptable laboratory detection /innitm' <br /> may be destroyed by pressure grouting with neat cement from the bottom up while <br /> leaving the well casing in place. Following that, a hole at least one foot larger in <br /> diameter than the originally drilled borehole shall be excavated around the outside of the <br /> well casing to a depth of 3 feet below the ground surface, and the well casing shall then <br />