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' Monitoring Well Installation & Quarterly Report - Third Quarter 2041 tFranklyn Cole Property 7505 West Linne Road, Tracy, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr. Franklyn Cole,Advanced GeoEnvironmental, Inc. (AGE) has prepared this report for 7505 West Linne Road,Tracy,California(the site).This report documents procedures and results for the installation of three ground water monitoring wells and quarterly ground water ' monitoring during the third quarter 2001. The location and vicinity of the site are illustrated on Figure 1. The location of on-site structures, borings, wells and the former UST and dispenser locations are depicted on Figure 2. ' This report is prepared in accordance with the Central Valley Regional Water Quality Control Board (CVRWQCB)guidelines for the investigation ofunderground storage tank(UST)sites.Background information and a summary of prior investigations at the site are included in the AGE--prepared document titled Work Plan - April 1999, dated 23 April 1999. Quarterly monitoring data from August 1999 to the present is summarized in Tables 1 and 3 of this report. 2.0. PROCEDURES Three ground water monitoring wells (MW-4, MW-5 and MW-6) were Installed and developed in ' June 2001 and sampled in July 2001. Monitoring wells MW-I through MW-6 were monitored and sampled on 03 July 2001 and well MW-4 was re-sampled on 16 July 2001 to confirm results from the 03 July 2001 sampling event. Field work were performed in accordance with the AGE-prepared ' document, WorkPlan forAdditional Well Installation-December 2000, dated 20 December 2000. The work plan was approved by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD)by letter dated 02 January 2001. 2.1. DRILLING AND SAMPLING ' On I 1 June and 12 June 2001, three soil borings were advanced at the site. The soil borings were advanced using a B-81 drill rig, equipped with $.25-inch diameter hollow-stem augers to install 1 monitoring wells MW-4, MW-5 and MW-6. The drill rig and two-marl crew were supplied by Woodward Drilling. Auger returns generated by drilling were containerized in properly labeled Department of Transportation(DOT)-approved model 17H 55-gallon drums andwere stored on-site. Soil samples were collected ahead of the drill bit using a California modified split-spoon sampler loaded with three pre-cleaned 2-inch by 6-inch brass sleeves. The samples were collected' from ' boring MW-4 at five-foot intervals,beginning at 60 feet below surface grade(bsg) and from boring Advanced GeoEnvirontnental,Inc.