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r <br /> i <br /> Earth Systems Environmental , Inc. <br /> ®r,1517P A Member of The Earth170-A Granada Drive • San Luis Obispo, CA 93401 (805) 541-5983 FAX {805} 544 0531 <br /> June 191 1991 Doc. No. 9106-E057.PRP <br /> RUCEVE ", <br /> Mr. Martin Thorpe/Jim' Thorpe Oil, Inc. <br /> c/o James V. Demera SEP 6 1991 <br /> Mullen' <br /> j Sullivan & Newton ENVIRONMENTAL HEALTH <br /> 1111 West Tokay Street PERMIT/SERVICES <br /> Lodi, California 94241 <br /> SUBJECT: PROPOSAL FOR ONE QUARTER OF GROUNDWATER MONITORING <br /> 204 EAST LODI AVENUE, <br /> - LODI, CALIFORINIA <br /> I <br /> Dear Mr. Thorpe: <br /> In response to your recent request, Earth Systems Environmental, Inc. (ESE) is <br /> pleased; to offer this cost estimate for one quarter of groundwater monitoring of the . <br /> three groundwater monitoring wells located ' at the above referenced site. The <br /> purpose of the quarterly monitoring is to assess the potential migration of petroleum <br /> hydrocarbons in groundwater beneath the site. <br /> Groundwater -monitoring was previously performed by Weiss Associates (WA) <br /> during a subsurface investigation conducted at the site on October 16, 1987. We will <br /> include the groundwater monitoring results from WA in our monitoring report. The <br /> following table outlines our recommended analytical ,program: <br /> Monitoring Well Identification TPPH and BTE&X by-EPA. Test Method 8240 <br /> MW-1 X <br /> MW-2 X u <br /> MW-3 X <br /> TPPH: '!Total purgeable .petroleum hydrocarbons. <br /> BTE&X: Benzene. toluene, ethylbenzene, and total xylenes. <br /> �Water level measurements, purging, and sampling of the monitoring wells will <br /> be performed according to the standard operating procedures presented in Appendix <br /> A. <br /> i <br />