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1 <br />' 20 January 2005 <br /> AGE-NC Project No 04-1045 <br />' Page 3 of 7 <br />' 1,2-Dichloroethane (1,2-DCA) and 1,2-Dibromoethane (EDB) by EPA Method 8260 <br /> Modified, and <br /> • Total lead by EPA Method 6010 <br /> 1 <br /> In addition, selected soil samples from borings MW2 and MW3 were sent to Cooper Testing <br />' Laboratory(CTL) and analyzed for geotechnical properties <br />' 2 1 5 Equipment Decontamination <br /> All augers used were cleaned prior to advancement in each boring location The sampling equipment <br />' was washed in an Alconox solution and triple rinsed with water prior to each sampling run to avoid <br /> cross-contamination <br />' 2 16 Well Head Survey <br />' On 16 December 2004, a California state-licensed surveying engineer from Morrow Surveying <br /> surveyed the location and elevation of monitoring wells MW-1 through MW-3, the location was <br />' surveyed to the nearest 0 1-foot relative to coordinate datum NAD 83 (1986), and the elevation at <br /> the top of the well casing was surveyed to the nearest 0 01-foot relative to Stockton benchmark#3 <br /> surveyed at an elevation of 10 59 feet above mean sea level (MSL) The results of the monitoring <br />' well survey are presented in Table 3 The surveying report (Morrow Surveying) is presented in <br /> Appendix D <br /> 2 2 QUARTERLY WELL MONITORING PROCEDURES <br />' The initial quarterly ground water monitoring event was performed on 24 November 2004, ground <br /> water monitoring was performed on monitoring wells MW-1 through MW-3 <br /> 2 2 1 Well Development and Monitoring <br /> On 24 November 2004, the depth to ground water in each monitoring well was measured from the <br /> top of the well casing to the nearest 0 01-foot utilizing a Solinst water level meter Ground water <br /> elevation in each well was calculated by subtracting the measured depth to ground water from the <br /> surveyed casing elevation (Table 3) <br /> IAdvanced GeoEnvironmental,Inc <br />