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1 Quarterly Report - Second Quarter 200. 5 • RIPON FARM SERVICE X72 South Highway 99,Ripon, California �3v a< 1.0. INTRODUCTION ��b�-Z At the request of Mr. Allan Fetters, Advanced Ge vironmental, Inc. (AGE) has prepared this report of environmental activities conducted at 2�South Highway 99, Ripon, California (the site).The location of the site and surroundingarea are illustrated on Figure 1.Structures,monitoring g wells and remediation well locations associated with the site are depicted on Figure 2. The report . documents the installation of two ground water monitoring wells,well development and analytical results from soil samples collected off the site.This report also documents the procedures and results of the quarterly ground water monitoring event performed on 04 May 2005; a total of ten ground water monitoring wells were monitored and sampled.Background information,including details of previous site assessment work, is presented in Appendix A. 2.0. PROCEDURES The monitoring well installation was performed in accordance with Central Valley Regional Water Quality Control Board(CVRWQCB) guidelines for the investigation of underground storage tank Ile (UST) sites and in accordance with procedures outlined in the AGE prepared work plan Additional Site Assessment Work Plan dated 01 November 2004 and approved by the San Joaquin County Environmental Health Department(EHD)be letter dated 13 January 2005.Ground water monitoring ' and sampling were performed in accordance with EHD guidelines for the sampling of ground water monitoring wells. Quarterly ground water monitoring activities were conducted on 04 May 2005; monitoring wells MW-1 through MW-10 were monitored and sampled. 2.1. MONITORING WELL INSTALLATION AND DEVELOPMENT Two off-site round water monitoring wells MW-9 and MW-10 were installed on 15 April 2005 g g ( ) p ' developed and sampled on 04 May 2005. ' 2.1.1. Drilling and Sampling The two soil,pilot borings for monitoring wells MW-9 and MW-10 were advanced using a CME75HT drill rig,equipped with 8.25-inch diameter hollow-stem augers. The drill rig and three- man crew were supplied by Cascade Drilling Inc. Auger returns generated by drilling were containerized in plastic sheeting on the site, pending laboratory analysis of the soil samples. ' 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 Advanced GeoEnvironmental,Inc.