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1 Quarterly Report - Second Quarter 2001 <br /> • Shockey and Sons Trucking <br /> 850 Milgeo Avenue, Ripon, California <br /> ' 1.0. INTRODUCTION <br /> ' At the request of Mr. Lee Shockey, Advanced GeoEnvironmental, Inc. (AGE) has prepared this <br /> quarterly report for the site located at 850 Milgeo Avenue, Ripon, California (the site). The scope <br /> of work included the monitoring of four ground water monitoring wells. The location of the site and <br /> its surroundings are depicted in Figure 1. Monitoring wells, probe boring locations and structures <br /> on the site are shown in Figure 2. <br /> ' Site history and findings from previous investigations and previous monitoring events at the site are <br /> summarized in Preliminary Investigation and Evaluation Report dated 15 August 1996, prepared <br /> by AGE. Quarterly monitoring data from April 1996 to the present is summarized in Tables 1 and <br /> ' 2 of this report. <br /> 2.0. PROCEDURES <br /> All work was conducted in accordance with Investigation/Remedial Feasibility Study Work Plan, <br />' dated 30 June 1999, prepared by AGE and approved by the PHS-EHD on 08 July 1999. <br /> Field work was performed in accordance with guidelines developed by Central Valley Regional <br />' Water Quality Control Board(CVRWQCB)for the investigation of underground storage tank(UST) <br /> sites. <br /> 2.1. MONITORING WELL PURGE PROCEDURES <br />' On 11 April 2001, the water level in each monitoring well was measured relative to the tops of the <br /> well casings using a Solinst water level meter.The depths to ground water and relative ground water <br /> elevations are given in Table 1. <br /> After depth to ground water gauging, a two-stage submersible pump was used to purge each well. <br />' Seven gallons of water were removed from MW-1, six gallon's were removed from MW-2 and <br /> MW-3 and thirteen gallons of water were removed from MW-4(minimum of three casing-volumes <br /> per well). The ground water parameters of temperature, pH and conductivity were measured at <br /> r ginterval <br /> nry - .using Oakton water analyzer. The gr_o_u_n_d:water•pammeter-s- stab ilized during <br /> purging (Appendix ). - <br />' Purged water was stored on-site in 55-gallon Department of Transportation(DOT)-approved drums. <br /> Advanced GeoEnvaronatent nc <br /> a!,Inc. <br /> 1 <br />