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Chevron Products Company 3 <br /> Former Chevron Service Station 99-8632 Tracy CA November 3, 1998 <br /> ethylbenzene, and xylenes (BTEX) and methyl tertiary-butyl ether <br /> (MtBE) using EPA Method 8020. The highest reported detection (if <br /> any) of MtBE will be confirmed by EPA Method 8260 . <br /> • Monitoring Well Development, Sampling, and Analysis. The well <br /> will be developed by surging and pumping techniques. A groundwater <br /> sample will be collected from the monitoring well upon completion of <br /> well development. The groundwater samples will be sent under chain- <br /> of-custody procedures to a California State-certified laboratory, and <br /> analyzed for TPH-g and TPH-d using modified EPA Method 8015, and <br /> BTEX and MtBE using EPA Method 8020. The highest reported <br /> detection (if any) of MtBE will be confirmed by EPA Method 8260. <br /> • Well Surveying. The elevation and northings and eastings of the <br /> groundwater monitoring well will be surveyed by a licensed surveyor to <br /> a known benchmark relative to mean sea level and existing wells. <br /> • Report. A report will be prepared after completion of necessary field <br /> work. The report will include soil boring logs, well construction <br /> details, soil and groundwater analytical results, chain-of-custody <br /> documentation, and conclusions. <br /> Field and laboratory procedures are presented as Attachment A. <br /> SCHEDULE <br /> SECOR is prepared to initiate field work immediately following approval of this work <br /> plan by the SJCPHS and issuance of permits by the City of Tracy and the SJCPHS. A <br /> repodocumenting' hee ridings ofthe assessment is anticipated-tobe subtted <br /> approximately 8 to 10 weeks after the completion of the field work and upon receipt of <br /> all laboratory data. <br /> If there are any questions regarding the contents of this work plan, please call us at <br /> (916) 364- 1880. <br /> Sincerely, <br /> SECOR International Incorporated <br /> R r Rmf <br /> Project Geologi ED GEp�O <br /> JAMES W. <br /> GRASTV a <br /> reg Barclay <br /> Senior Geologist <br /> R. G. 6260 NO. 6102 ` <br /> 9�oF CA�!(A <br /> 7CA074)44-01/WPLAN.DOC <br />