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EGG <br /> GREGG DRfWNG 6 TESTING. INC <br /> 2047 ARNOLO INDUSTRIAL WAY. SUITE A <br /> CONCORD. CA 94520 ❑ (415) 68G-4442 ❑ FAX (415) 680-4559 <br /> I RF N-411" <br /> ' ice, <br /> M A Y + ^ <br /> May 10, 1990 ENV1,-V,i,s-.,t � -%L ri&k1LTH <br /> ' <br /> RE'RMI i /SER,flCES <br /> Eleanor Ratliff, REHS <br /> Public Health Services <br /> Environmental Health Division <br /> 1601 E Hazelton Ave <br /> Stockton, CA 95201 <br /> SUBJECT ADMINISTRATIVE HEARING ON MAY 7, 1990 <br /> Dear Ms Ratliff <br /> Please find enclosed, a completed permit application, two GDT <br /> dispatches and a copy of my well construction notes <br /> Also regarding the construction of the wells, the grout backfill (from <br /> Bentonite seal to the surface completion) consisted of type II <br /> Portland and 51 powdered Bentonite mixed with five gallons of <br /> 1 water This grout was tremied using our chemgrout mixer <br /> If there is any other information you need please don't hesitate to <br /> ' call me <br /> Sincerely, <br /> GREGG DRILLING AND TESTING, INC <br /> Chris Christensen <br /> Manager <br /> Encl <br /> ' SPECIAUZING IN CONTAMINANT SAMPLING AND MONITORING WELL INSTALLATIONS <br />