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ARCO Service Station No. W,186 Page 2 <br /> 3212 North California Street' January 4, 2012 <br /> Stockton, California 94570 <br /> limits may be destroyed by pressure grouting from the bottom upward, while leaving the <br /> well casing in place. The top three feet or more of the well shall be drilled out with an <br /> auger that is at least one foot larger than the auger originally utilized to install the well, <br /> and the soil around the cut-off casing removed to a depth of an additional six inches <br /> below the new 'top' .of the cut-off casing. The grout sealant shall spill out of the top of <br /> the well casing to form a mushroom cap seal, with at least 12 inches of neat cement <br /> grout poured 6 inches above and 6 inches below the top of the cut-off casing. <br /> • EHD records indicate the presence of `nested' wells installed using ten-inch augers. <br /> The EHD has found destruction results of nested wells are best obtained when an auger <br /> larger than the original auger is used and centered on the deepest casing (which is off- <br /> center in the original borehole). The auger needs to be sized sufficiently to reach out <br /> and remove all well casings, screens, filter packs, and grout sealant installed during <br /> construction. <br /> • All groundwater displaced to the surface during grout installation shall be pumped out of <br /> the excavation to allow for the EHD inspection and verification that the well has been <br /> properly destroyed. Contaminated groundwater pumped out of the excavation shall be <br /> containerized for proper disposal. <br /> • This site has two wells located off-site; one in the City of Stockton right-of-way on <br /> American Street, and one at Oak Park. Please submit a copy of the encroachment <br /> permit and access agreement along with the EHD Well and Boring Permit Application <br /> forms for these wells. <br /> After the EHD has approved the well destruction scope of work proposal, you may submit an <br /> EHD Well and Boring Permit Application form, Master File Record form and the appropriate <br /> fees for each parcel. The permit fee for the destruction of each well is $125, along with a $375 <br /> Inspection Activity fee per parcel. A review of the site records indicates that 14 wells currently <br /> are installed. A fee of $2,875,00,04 x $125.00) + ($375.00 x 3) will be required for the well <br /> destruction permits. (To determine the fees for nested wells, each nested well is considered as <br /> one well for permitting and fee purposes.) <br /> If you have any questions, please_contact Vicki McCartney at (209) 468-9852 or by email at <br /> vmccartney@sjcehd.com. <br /> Victoria L. McCartney, REHS Adrienne Ellsaesser, REHS <br /> Senior Registered Environmental Heal Specialist Acting Program Coordinator <br /> c: Mr. James L. L. Barton, PG, California Regional Water Quality Control Board Central <br /> Valley Region, 11020 Sun Center Drive, Suite 200, Rancho Cordova, CA 95670 <br /> Mr. Kirk Larson, PG, State Water Resources Control Board Underground Storage Tank, <br /> PO Box 944212, Sacramento, California 94244-2120 <br /> Ms. Catherine Francini, Stantec Consulting Corporation, 3017 Kilgore Road, Suite 100, <br /> Rancho Cordova, California 95670 <br />