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4 <br /> Advanced <br /> GeoEnvironmental, Inc. <br /> VIA FACSIMILE & U.S. MAIL <br /> so :/ <br /> 19 December 2000 <br /> AGE-NC Project No. 97-0312 <br /> Mr. Mike Infurna <br /> SAN JOAQUIN COUNTY PHS-EHD <br /> 304 East. Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Schedule for Quarterly Ground Water Monitoring, Fourth Quarter 2000 <br /> Former CHEROKEE TRUCK STOP <br /> 3535 East Cherokee Road, Stockton, California <br /> Dear Mr. Infurna: <br /> At the request of Mr. Ellis Cecchini, Advanced GeoEnvironmental, Inc. (AGE) will be performing <br /> the required ground water monitoring and sampling for the fourth quarter 2000 on 20 December <br /> 2000. <br /> As discussed in our telephone conversation on 19 December 2000, AGE will be purging and <br /> sampling wells UST-1, UST-2, UST-3, UST-4, UST-5 and UST-6. As with previous monitoring <br /> events, samples will also be collected from the two on-site domestic wells. <br /> Ground water samples will be submitted to a certified laboratory and analyzed for the following: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Methods 5030 and 8015m; <br /> • Volatile aromatic hydrocarbons: benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> with methyl tertiary-butyl ether (MTBE) in accordance with EPA Method 80201602; and <br /> • Volatile organics and fuel oxygenates: 1,2-DCA, ethylene dibromide (EDB), MTBE, di- <br /> isopropyl ether (DIPE), ethyl tert-butyl ether(ETBE), tert-amyl methyl ether (TAME) and <br /> tert-butanol (TBA) in accordance with EPA Method 8260 modified. <br /> Additionally, samples from well UST-1 and UST-5 will be analyzed for the following: <br /> • Total lead in accordance with EPA Method 7420. <br /> 4005 North Wilson Way, Stockton,California 95205 <br /> Telephone(209)467-1006 FAX(209)467-1118 <br />