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amount of purge is related to the well yield and aquifer recharge. Measurements will <br /> be recorded of aquifer parameters of pH, electrical conductivity and temperature will <br /> be made during the purge to ascertain aquifer water entry. Samples will be collected <br /> following the purge collected for minimum headspace in properly prepared bottles <br /> secured from the laboratory. All samples will be labeled, logged onto chain-of- <br /> custody and packed on ice for transport to the laboratory. Well development and <br /> sampling water will be stored on-site in sealed drums. Disposal of the water will be <br /> provided upon receipt of chemical data. Proper disposal of the development water <br /> will be coordinated by Wright Environmental. <br /> Chemical Analysis <br /> Up to 25 soil samples, and 2 water samples will be chemically analyzed. All samples <br /> will be chemically analyzed for Total Petroleum Hydrocarbons as Gasoline (TPHG) and <br /> Benzene, Toluene, Ethyl Benzene, and Xylene (BTM), at a State-certified laboratory, <br /> using EPA Methods 8015 and 8020. The samples will be analyzed on a normal (ten <br /> working days) turnaround time. <br /> Summary Presentation, Schedule and Budget <br /> A summary presentation of field data will be prepared. The presentation will be <br /> prepared within two to three weeks of the receipt of the chemical data. The <br /> presentation will include boring logs, well details, and chemical analytical data. <br /> Wright will prepare the site safety plan by the time of field activity. The school <br /> district will be required to perform a utility clearance. Monitoring well permitting <br /> will begin upon receiving authorization to proceed from the district. <br /> The total estimated price for the activities described in this proposal is S13,4§0,5% <br /> A detailed summary of the unit prices are included as Attachment A to this proposal. <br /> Wright Environmental will coordinate to have PHS-EHD invoice the district for their <br /> project oversight fees. <br /> If you have any questions concerning this project, please call our Tracy office, at <br /> 833-0758. <br /> Sincerely, <br /> nigh Environmental Services, Inc <br /> Lester Messina <br /> Project Supervisor <br />