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Quarterly Report - Second Quarter 2003 NATIONAL FREIGHT 2850 Loomis Road, Stockton, California 1.0. INTRODUCTION At the request of Mr. Daniel Folcher of Vineland Construction Co.,Advanced GeoEnvironmental, Inc. (AGE)has prepared this report of environmental activities conducted at 2850 Loomis Road(the site), Stockton, California. The scope of work included monitoring and sampling Five ground water monitoring wells on the site and preparation of this report. The location of the site and its r, surroundings are illustrated on Figure 1. On site features, including the locations of the monitoring wells, are illustrated on Figure 2. This investigation was performed in accordance with the guidelines of the Central Valley Regional Water Quality Control Board (CVRWQCB) and the San Joaquin County Environmental Health Department(EHD)for investigations of underground storage tank(UST)sites and sampling ground water monitoring wells.Site background information can be found in the AGE-prepared Preliminary Investigation and Evaluation Report,dated 12 October 1999 and Additional Site Assessment Report, dated 09 April 2002. 2.0. PROCEDURES Ground water monitoring and sampling were conducted on 16 June 2003; the procedures were performed in accordance with the AGE-prepared and El-ID-approved Monitoring Well Installation _ Work Plan, dated 09 June 2000, 2.1. WELL MONITORING AND PURGING A Solinst water level meter was used to measure the depth to ground water from the well casing tops in wells MW-1 through MW-5 to the nearest 0.01 foot. The depths to ground water are summarized in Table 1. After water levels were gauged, a dedicated, disposable plastic bailer was used to evacuate(purge) each monitoring well of a minimum of three casing-water volumes (approximately 6 to 7 gallons) of water. Temperature, pH, and conductivity were measured at regular intervals using an Oakton water analyzer. The field data sheets are included in Appendix A. Purged water was stored on site in 55-gallon drums. Advanced GeoEnviron mental,Inc.