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SEP CIG 'B0 09:-56 HARGIED — LA JOLLA P.2 <br /> HARGIS+ASSOCIATES, INC. <br /> ConsJtonts in Hydropeulogy <br /> 2223 Ave-ido De ',c Foyc S,j.ile 300 <br /> 920,37 <br /> (/,-9" 454-0165 <br /> 4.7 4. <br /> September 2, 1988 <br /> 7, <br /> VIA FUERAL EXPRESS <br /> Ms. Laurie Cotulla <br /> SAN JOAQUIN LOCAL HEALTH DISTRICT <br /> 1601 E. Hazelton Avenue <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> RO;7Exploratory Boring Near California Water Service Well CWS20 <br /> Marla_y -Cooling Tower Company EaciJ Stockton, �gjifornja <br /> _ I ty <br /> Dear Ms. Cotullai <br /> As Gary Reents and Gary Vargas have discussed with you, Hargis + <br /> Associates, Inc. plans to drill an exploratory boring adjacent to California <br /> Water Service Well CWS20 as part of our continuing groundwater investigation <br /> at the Marley Cooling Tower Company facility. <br /> The exploratory boring will be drilled using mud rotary drilling method <br /> to a total depth of approximately 500 feet. The exploratory boring will be <br /> a maximum of 6 inches in diameter. It is anticipated that the drilling of <br /> the exploratory borehole will take three to four days, Positive hydrostatic <br /> pressure will be maintained in the borehole 24 hours a day. Upon reaching <br /> the total depth of the boring it will be geophysically logged. Immediately <br /> following the geophysical logging of the exploratory boring, it will be <br /> abandoned by pressure grouting the borehole with neat cement from the bottom <br /> to land surface using a tremae pipe. <br /> The exploratory boring will be located approximately 100 feet east of <br /> Oro Avenue in east Stockton (Figure 1) . The boring will be at least 50 feet <br /> away from California Water Service Well CWS20 and 10 feet away from the <br /> property boundaries. <br /> If you have any questions, please contact me at the Marley Cooling <br /> Tower Company facility at (209) 465-3451 from Tuesday, September 6 through <br /> Friday, September 9. <br /> Sincerely, <br /> HARGIS + ASSOCIATES, INC. <br /> Peter T. Quinlan <br /> SF-ninr Hydrogenlogist <br /> PTQ/bm �hoErix office; Ticsjr <br /> Enclosure 2222 5:::,m D-,65ol Rocid SJ N� <br /> Mesc,-Arizonc �5202 <br /> '602) 58' <br /> (602) 345-0888 <br />