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Soil Vapor Monitoring <br /> Soil vapor monitoring will be conducted on a quarterly basis. Five soil <br /> gas probes will be installed for the monitoring program. The location of <br /> these probes are shown on Drawing G-1. Each of these probes will be <br /> sampled on a quarterly basis. Additionally, a vapor sample will be <br /> collected at each dual phase extraction well on a quarterly basis. Vapor <br /> samples will be collected in Summa® Canisters and submitted to an <br /> analytical laboratory for TO-14 analysis. <br /> In addition to quarterly soil vapor monitoring, an organic vapor monitor <br /> will be utilized for the field measurement of VOC vapor concentrations at <br /> soil vapor monitoring probes and dual phase extraction wells. This field <br /> monitoring will be conducted on a monthly basis. <br /> Reporting <br /> Quarterly monitoring reports will be prepared and submitted to RWQCB. <br /> These reports will include: <br /> • The results of soil vapor monitoring and ground water monitoring; <br /> and, <br /> • Treatment System operating parameters, including vapor and <br /> ground water extraction rates, mass of VOCs removed during the <br /> reporting period, quantity of floating product removed, and an <br /> evaluation of the system effectiveness during the reporting period. <br /> 6-4 <br />