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i <br /> J <br /> ANDY EGGIMAN <br /> 1112 E. Harding Way. <br /> Page 3 of 3 <br /> A minimum of 12 hours of time shall be allowed between placement of the <br /> annular seal and well development. <br /> EHD recommends that ground water in all significantly permeable units at <br /> d b CPT data be sampled to the-— <br /> feet bs identified P <br /> depths greater than 55 g Y <br /> proposed depth of 100 feet bs , at which point the boring should be <br /> p 9 <br /> terminated, at this stage of the investigation. <br /> The CPT boring should be grouted immediately after completion. <br /> While gaining an access agreement to sample the water well 800 feet <br /> west of the site should be pursued, EHD will not require sampling the well <br /> at this timep ending a more complete delineation of impacted ground <br /> water and obtaining additional flow direction data. <br /> EHD also notes that additional monitoring wells may be required for lateral and <br /> vertical delineation and monitoring of impacted ground water if indicated by future <br /> monitoring results and/or the analytical results of this investigation. <br /> If borings or wells are to be installed on a city right-of-way or on adjacent private <br /> parcels, copies of the City of Stockton Public Works Encroachment and <br /> Revocable permits and/or private parcel access agreements for the intended <br /> activities must be submitted to EHD along with the $ 89.00 permit fee and permit <br /> application for each.affected parcel prior to initiation of any of the proposed.work. <br /> Questions or comments may be directed to the undersigned by mail (address on <br /> letter head), by e-mail at nhenderson@sjcehd.corn, or by telephone at <br /> (209) 468-3436. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> Nuel C. Hen erson, Jr., R.G. <br /> Unit IV - Site Mitigation <br /> C: Marty Hartzell — CVRWQCB <br /> John Sellman —ATC <br /> c <br />