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E C 0 R <br /> • it <br /> Mr Michael Infurna <br /> July 23, 2003 <br /> Page 4 <br /> I ! <br /> by purging approximately 10 casing volumes of water Water Quality measurements including <br /> conductivity, turbidity, temperature and pH will be collected during well development activities After j <br /> well development, ground water samples will be collected from the wells, delivered under standard <br /> chain-of-custody manifest to a California state-certified laboratory and analyzed for the presence of <br /> petroleum hydrocarbons described above I <br /> Surveying <br /> Upon completion of well construction a licensed surveyor will locate the wells within the California <br /> state plane coordinate system, within 111000 vertical control, and latitude-longitude (degree, minutes, ' <br /> seconds) to meet the State of California Water Resources Control Board location requirements <br /> Report �I <br /> A Site Investigation Report will be prepared and submitted to the SJC-EHD within 4 to 6 weeks <br /> following completion of field activities and receipt of analytical results The report will include soil <br /> boring logs, well construction details, soil and groundwater analytical results, chain-of-custody n <br /> records, conclusions and provide further recommendations, if needed I <br /> Preliminary results of the investigation will be discussed with the SJC-EHD prior to the submittal of <br /> • the Site Investigation Report <br /> Schedule <br /> SECOR anticipates completing the assessment activities and preparing and submitting an <br /> assessment summary report to the SJC-EHD within 4 to 6 weeks following completion of field <br /> activities and receipt of analytical results <br /> E <br /> Should you have any questions or concerns regarding these activities, please feel free to contact <br /> Greg McIver of SECOR at (916) 861-0400 extension 279 or Robert J Cochran of Chevron at (925) <br /> 842-9655 <br /> Sincerely, <br /> SECOR International IncffffAA//orrrporated s <br /> I � <br /> Greg Mclve S able �0 <br /> Project Manager ncipal Ge + SCOTT �0 <br /> Enclosures GABLE Ni <br /> No <br /> Figure 1 Site Location Map N;A Exp tea' <br /> Figure 2 Site Plan with Proposed Monitoring Well Locations <br /> Figure 3 Temporary Well Diagram CAL��O� <br /> • Figure 4 Monitoring Well Construction Diagram <br /> 1IChevron110016211REPORTS1200312003 Site Assessment tW PRevO doc SECOR International Incorporated <br />