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�� ur iQuarterly Report - Second Quarter 2004 GEWEKE LAND DEVELOPMENT & MARKETING 16 South Cherokee Lane, Lodi, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr Dale Gillespie of G-REM, and in accordance with Cleanup and Abatement Order No 93-701, Advanced GeoEnvironmental, Inc (AGE) has prepared this report of environmental activities performed at 16 South Cherokee Lane,Lodi, California during the Second Quarter of 2004 The scope of work included the installation of three groundwater monitoring wells, three ozone infection wells,development and sampling of the monitoring wells,the performance of a quarterly ground water monitoring event and the preparation of this report The site and its surroundings are illustrated on Figure 1 Monitoring wells, remediation wells and boring locations related to the site are shown on Figure 2 Results of previous investigations are detailed in the Problem Assessment Report (PAR), the Quarterly Report-March 1996 and the Quarterly Report-March and June 1999, a brief history of the site is included as Appendix A Analytical results for ground water samples from previous monitoring events are included in Table 3 of this report i2.0. PROCEDURES Between 12 April and 14 April 2004 three ground water monitoring wells (MW-20, MW-21 and MW-22) and three ozone infection wells(OW-1, OW-2 and OW-3)were installed on- and off-site Field work was performed as outlined in the AGE-prepared Additional Monitoring Well Installation Work, dated 28 November 2003 and Ozone Pilot Study Work Plan,dated 13 November 2003 On 19 April 2004,monitoring wells MW-20,MW-21 and MW-22 were monitored and sampled On 26 June 2004, twenty three on- and off-site ground water wells were monitored for depth to water and fourteen monitoring wells (MW-7, MW-8, MW-9, MW-11, MW-12 and MW14 through MW-22)were sampled Field work was performed in accordance with the Central Valley Regional Water Quality Control Board (CVRWQCB) Revised Monitoring and Reporting Program dated 27 June 2001 21 DRILLING AND SAMPLING On 12, 13 and 14 June 2004, six soil borings were advanced on- and off-site The soil borings were advanced using a CME-75 drill rig, equipped with 8 25-inch diameter hollow-stem augers to install monitoring wells MW-20,MW-21 and MW-22 and ozone infection wells OW-1,OW-2 and OW-3 The drill rig and three-man crew were supplied by Mitchell Drilling Environmental Auger returns . generated by drilling were containerized in properly labeled DOT-approved model 17H 55-gallon drums and was stored on the Geweke site pending disposal Advanced GeoEnvironmental,Inc