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3.1.3 Well Development and Sampling Procedures Following installation, each monitoring well was developed using swab and bail techniques in accordance with RESNA's QA/QC Plan (Appendix V) The wells were ' developed until relatively sediment free All water produced during well development was contained in DOT 17H drums and remains on-site pending determination of method ' for proper disposal Well development data is contained on development/purge logs in Appendix VII ' Immediately following well development, groundwater sample was retrieved from each well Water sample collection and preservation was conducted in accordance with RESNA's QA/QC Plan, groundwater sampling protocol Samples were transferred to ' appropriate sample containers, using clean, disposable bailers with bottom emptying devices to reduce volatilization Sample containers were then labelled with sample identification, placed on ice, and shipped under chain-of-custody to RESNA Environmental Laboratories (DHS #1211) The water samples were analyzed for BTEX and TPHG by EPA methods 8020 and modified 8015, respectively The method detection limit at RESNA Environmental regarding BTEX and TPHG in water is 0 5 and ' 50 ppb, respectively Analytical results are summarized in Table 4 Laboratory data sheets are presented in Appendix VII 3.1.4 Fluid Level Measurement Fluid levels were obtained from all monitoring wells following development, after fluid levels had been allowed to stabilize Levels were taken using a water level probe capable Iof measuring the depth to water with an accuracy of 1/100th of a foot ' Wellhead elevations and locations were surveyed to allow lateral and vertical control for data reduction Surveying was performed under the direction of a California registered civil engineer Groundwater monitoring data is summarized on Table 5 ' IPAR0492 TIL 6