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r <br /> - ,APR .. 1.gal <br /> J <br /> i <br /> San Joaquin County <br /> O Pq u i N DIRECTOR <br /> Donna <br /> DI <br /> Environmental Health DepartmenttDonna Heran,REHS <br /> z' y 1868 East Hazelton Avenue <br /> a: j`.. i• a PROGRAM COORDINATORS <br /> < Stockton, California 95205-6232 <br /> o• ' ' :. Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> ! Kasey Foley,REHS <br /> c9tlFo•R�:P Website: www.sjgov.org/ehd Linda Turkatte,REHS <br /> Phone: (209)468-3420 <br /> Fax: (209)464-0138 <br /> April 12, 2013 <br /> Mrs. Margaret A. Marci opy <br /> 20 Mobile Lane <br /> Crescent City, California 95531-8409 <br /> Subject: Marci Property <br /> 2969 Loomis Roar! <br /> Stockton, California 95205 <br /> Dear Mrs. Marci: <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> Work Plan: Well Destruction (work plan), dated 01 April 2013, prepared and submitted by your <br /> consulting firm, Ground Zero Analysis, Inc. (GZA), on your behalf for the above-referenced <br /> site. The EHD had directed the submittal of a well destruction work plan by letter dated 06 <br /> March 2013. <br /> In the work plan, GZA proposes to destroy MW-1, MW-4 through MW-7, IW-1, IW-101, EW-1 <br /> } <br /> through EW-3, EW-101 through EW-103, AS-1, EW-4 and EW-5 by: <br /> e Drilling out and removing all the contents of the well; then <br /> i Sealing the cleared borehole with neat cement by grouting from the bottom upward to <br /> a depth of three to five feet below surface grade (bsg). <br /> GZA proposes to destroy the remaining wells MW-2, MW-3, MW-8, MWA 04 through MW-106 <br /> and EW76 by: <br /> o Grouting the wells in place using a tremie pipe to pump neat cement grout (containing <br /> less than four percent bentonite) to the bottom of the wells under pressure of 25 <br /> pounds per square inch (psi); then <br /> ® Drilling out the top three feet of the well using an auger that is at least one foot larger <br /> in diameter than the auger originally used to install the well; then <br /> Removing soil around the cut-off casing to a depth of an additional six inches below <br /> the top of the cut-off casing; then <br /> Filling the top of the cut-off casing with grout before allowing the grout to spill out of the <br /> top of the well casing to form a mushroom cap with at least six inches of grout below <br /> and above the cut-off casing. <br /> i <br /> i <br />