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Quarterly Report - First Quarter 2005 . • SHOCKEY AND SONS TRUCKING 1 850 Milgeo Avenue,Ripon, California ' 1.0., INTRODUCTION At the.request of Mr. Lee Shockey, Advanced GeoEnvironmental, Inc. (AGE) has prepared this ' quarterly report for 850 Milgeo Avenue, Ripon, California (site). The scope of work included quarterly monitoring of three of the five accessible ground water monitoring wells and free product remediation. The location of the site and its surroundings are depicted in Figure 1. Monitoring and ozone sparge,wells,probe boring locations and structures on the site are shown in Figure 2. This report has been prepared in accordance with the Central Valley Regional Water Quality Control ' Board(CVRWQCB)guidelines for the investigation of underground storage tank(UST)sites. Site history and findings from previous investigations and previous monitoring events at the site are summarized in Appendix A.Quarterly ground water monitoring data from April 1996 to the present is summarized in Tables 1 and 2 of this report. . 2.0. PROCEDURES '• On 31 January 2005,AGE conducted quarterly ground water monitoring of monitoring well MW-1; wells MW-2 through MW-5 were covered and not readily available for monitoring. On 23 February 2005, AGE conducted quarterly groundwater monitoring of monitoring wells MW-2 through MW-4;monitoring well MW-5 was not accessible.All field work was performed in accordance with guidelines developed by the CVRWQCB for the investigation of UST sites. Ground water monitoring activities conformed to guidelines issued by the San Joaquin County Environmental 1 Health Department(EHD). ' 2.1. FREE PRODUCT REMEDIATION On 31 January 2005,free product odor and slight visual sheen was noted in monitoring well MW-1. ' On 23 February 2005,free product odor and slight visual sheen was noted in monitoring well MW-4. The product was recovered using a disposable bailer.After free product removal,the water and free product were stored on-site in 55-gallon DOT H-17 storage drums. The removal was performed in . accordance with California Underground Storage Tank Regulations, Article 5, Section 2655. r2.2. QUARTERLY GROUND WATER MONITORING ' AGE conducted quarterly ground water monitoring on 31 January 2005 and 23 February 2005. Advanced GeoEnvironmental,Inc.