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07 June 2004 AGE-NC Project No. 02-0926 F Page 6 .0f 11 Two selected soil sample from the site were submitted for,geotechnical-analysis. The samples were transported to Copper Testing Laboratory(CTL) of Mountain View, California and were analyzed. for porosity,and permeability in accordance with ASTM Method D5084. 3.2.5.. Monitoring Well Development On 12 February 2004,monitoring wells MW-1 through MW-3 were developed utilizinga steel bailer and Waterra inertial pump. Ground water was purged from each monitoring well until ground water was visually sediment free. Approximately 20 gallons-,of water were removed from each well. All of the wells drew down moderately while purging. Ground water temperature,pH and conductivity were measured at regular intervals during purging using an Oakton' water analyzer.Field sheets and data are included iri.Appendix B. Purged water was stored on-site in properly labeled, 55-gallon-. DOT-approved drums: 3.2.6. Well Head Survey On-01 and 03 March 2004, a California state-licensed survey engineer from Morrow Surveying surveyed the elevation at the top of the well casing of monitoring wells MW-I through MW73 to the nearest 0.01-foot relative to mean sea level (MSL) using vertical datum NAVD 88 from global positioning satellite (GPS).observations. Coordinate locations (x and y) of well locations were C' calculated to the nearest 0.1-foot using coordinate datum NAD 83.The results of the monitoring well- survey are contained :in Table,2`. The surveying report (Morrow, Surveying) is presented in Appendix-C. 3.3. QUARTERLY WELL MONITORING PROCEDURES The • quarterly�'ound water monitoring eve_nt was performed on 17 February2004; ground water monitoring was performed on monitoring wells MW-1 through MW-3. . 3.3:1. Well.Monitoring and Evacuation. On 17 February-2004., the de th=to ground water in all three monitoring wells was measured from p l� g the top of,each well casing to the nearest 0.01466t utilizing.a Solinst-water level meter. Ground M water elevation in each well was calculated by subtracting the measured depth to groundwater from : - the surveyed casing elevation(Table 2). Advanced GeoEnvironmenfal,Inc.