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On October 10 and 11, 1994, RESNA Industries, Inc (RESNA) personnel supervised the <br /> advancement of five soil borings at the site to depths ranging from approximately 15 to 30 feet <br /> bgs and the installation of monitoring wells within three of the soil borings Soil samples were <br /> collected from borings and analyzed for TPHd, TPHg and BTEX All work was completed in <br /> accordance with the Assessment of Contaminated Soil and Groundwater Workplan submitted to <br /> SJCPHS in October 1994 Soil boring and monitoring well locations are shown on Figure 2 <br /> GROUNDWATER MONITORING <br /> On October 2, 1995, a Smith Environmental technician measured the water levels in MW1, MW2 <br /> and MW3 The depth to water and the well casing elevations were used to evaluate the <br /> groundwater gradient Groundwater flow direction was generally to the northwest at 0 0024 ft/ft <br /> as shown on Figure 3 No floating product was noted in the wells Groundwater monitoring data <br /> are summarized in Table 1 <br /> On October 2, 1995, groundwater samples were collected from MW1, MW2 and MW3 for <br /> laboratory analyses Prior to sampling, at least three well volumes of water was purged from each <br /> well and parameters pH, temperature and electrical conductivity were monitored and allowed to <br /> stabilize Field purge logs are included in Attachment 1 <br /> k <br /> LABORATORY ANALYSIS <br /> • Samples were placed on ice and transported under chain-of-custody documentation to a state <br /> certified analytical laboratory Groundwater samples were analyzed by Argon Laboratories in <br /> Ceres, California Samples were analyzed for TPHg, TPHd, and BTEX <br /> The samples from MW1, MW2 and MM3 contained no detectable concentrations of petroleum <br /> hydrocarbons Analytical results are summarized in Table 2 Copies of laboratory results and <br /> chain-of-custody documentation are included in Attachment 2 <br /> • <br /> w 19433714gtr95 2 <br /> • <br /> SKTH <br />