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k4 <br /> Lichtenberger, Deborah <br /> From: Vicki McCartney [EH] [mailto:vmccartney(�)sjcehd.com] <br /> Sent: Friday, May 09, 2014 3:11 PM <br /> To: Magee, Amanda <br /> Cc: Adrienne Ellsaesser [EH]; Nuel Henderson [EH]; John Yoakum [EH]; Lichtenberger, Deborah; Manning, Danielle <br /> Subject: Variances for 7-Eleven Store No. 17334 <br /> Good afternoon Amanda: <br /> Yesterday, you sent an email to Johnny Yoakum stating that Stantec requests a variance to destroy monitoring wells MW- <br /> 2, MW-3 and MW-4 at 7-Eleven Store No. 17334 at 4501 North Pershing Avenue in Stockton. Instead of over-drilling the <br /> wells, as approved by letter dated 27 February 2014 from San Joaquin County Environmental Health Department(EHD), <br /> Stantec requests "pressure grouting the wells to the surface and remove the well boxes with hand tools.' <br /> The EHD approves the destruction of MW-2, MW-3 and MW-4 by pressure grouting with the following conditions: <br /> • Apply twenty-five pounds per square inch (psi)of liquid-grout pressure fora minimum of minutes at each well; <br /> • After applying the pressure, remove the well box and hand dig down to three feet below surface grade(bsg); cut <br /> off the casing at two-and-a-half feet bsg and grout the hole to near surface with neat cement grout. The hole <br /> need not be a foot larger in diameter than the originally drilled hole; the hole just needs to be large enough to be <br /> able to reach down and cut off the casing a half-foot above the bottom of the hole and allow grout to surround the <br /> casing at total depth. <br /> Please contact me if you have any questions. <br /> Thank you, Amanda. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, California 95205 <br /> Phone: (209)468-9852 <br /> Email: vmccartney(aD-sicehd.com <br /> `• I <br /> i <br /> I <br /> I <br /> 1 <br />