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6-05-1997 12:23PM FROM AW 209 956 0700 <br /> . P 2 <br /> Advanced a <br /> GeoEnvironmental, Inc. - <br /> gf Northern California <br /> 05 June 1997 <br /> AGE-NC Project No. 95-0109 <br /> Ms. Elizabeth Thayer <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> 3443 Routier Road. Suite A <br /> Sacramento, CA 95827-3098 <br /> Subject: Quarterly Ground Water Monitoring <br /> Gewcke Land Development and Marketing <br /> 16 South Cherokee Lane,Lodi,California <br /> Dear Ms. Thayer: <br /> In accordance with the monitoring requirements for the referenced site, Advanced <br /> GeoEnvironmental, Inc. (AGE)has scheduled quarterly ground water monitoring procedures for 11 <br /> June 1997. A representative of AGE will be on-site at 8:00 am to begin monitoring procedures and <br /> collect ground water samples. <br /> In accordance with the Revised Monitoring and Reporting Program dated 21 March 1997, samples <br /> will be collected from MW-6, MW-7, MW-8,MW-9, MW-I1, MW-12 and MW-14. Samples will <br /> be analyzed for total petroleum hydrocarbons qualttified as gasoline(TPH-g)and volatile aromatics <br /> (benzene, toluene,ethylbenzene and xylenes;BTE&X). Dissolved oxygen concentrations will be <br /> measured during purging of the specified wells.Samples collected from MW-9 and MW-14 will also <br /> be analyzed for bioenumeration and physicochemical parameters. The depth to ground water will <br /> be measured in all monitoring wells at the site. <br /> If you have any questions or require further information,please contact our office at(209)956-0264. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. <br /> )4" -KA4 7 , <br /> Kevin McKibben <br /> Senior Staff Geologist <br /> cc: Mr. Mark Geweke, Mr. Dale Gillespie - GLDM <br /> Mr. James DeMera-MSN <br /> Mr. Harlin Knoll - PHS/EHD <br /> 1803 West March Lane,Suite A.Stockton,California 95207 <br /> Telephone(209)956-0264 FAX(209)956-0700 <br />