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Page 2 of 2 <br /> May 2010 - AGE submits the work plan DPE Pilot test- three wells at UST area. <br /> June 2010 - AGE submits the SCM. <br /> October 2010 - EHD letter 'Pilot test for DPE' with dis-approval of observation wells. <br /> November 2010 - AGE submits the work plan addendum DPE Pilot test- three wells at UST <br /> area (MW-18 and MW-19). <br /> November 2010 - EHD letter `Pilot test WPA for DPE' with approval of observation wells <br /> (Decembers well installed). <br /> WINTER 2010 <br /> March 2011- EHD letter direct DPE Pilot test and directs "remedial action work plan" (if <br /> additional remediation wells are needed). <br /> April 2011 — DPE Pilot Test - <br /> May 2011 - AGE submits DPE pilot test report. <br /> May 2011 - AGE submits DPE Remedial Action Work Plan - three wells at UST area. <br /> Now - June 2011 <br /> Status, new remediation wells/near UST and dissolved plume migration route NE - Active DPE <br /> remediation on-site. <br /> Vertical definition of dissolved impact at UST area (MW-19), down gradient area (MW-5) and <br /> down-gradient off-site (MW-14) - Target depth near 135 to 140 feet. — Recommending <br /> judicious use of well installation and/or Future: base more well installation recommendations <br /> on analytical results of vertical wells. <br /> This should memorialize our phone call today, Additionally USTCF cooperation is anticipated. <br /> Please call me if you have any questions. <br /> Sincerely, <br /> William R. Little <br /> California Professional Geologist 7473 <br /> Oregon Registered Geologist G2254 <br /> Washington Licensed Geologist 2778 <br /> Advanced GeoEnvironmental Inc. <br /> Stockton-Santa Rosa•Monterey•Brea•Spokane•Reno <br /> 4671006 <br /> This email/fax message is for the sole use of the intended recipient(s)and may contain confidential and privileged information.Any <br /> unauthorized review,use,disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient,please contact the <br /> sender by email/fax and destroy all paper and electronic copies of the original message. <br /> 6/10/2011 <br />