Laserfiche WebLink
Quarterly Report - December 1998 <br /> Shockey and Sons Trucking <br /> 850 Milgeo Avenue <br /> 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 monitoring three ground water monitoring wells and sampling two ground water <br /> monitoring wells for laboratory analysis. The location of the site and its surroundings are depicted <br /> in Figure 1. Monitoring wells, probe boring locations and a structure on the site are shown in Figure <br /> 2. <br /> Site history and findings from previous investigations and previous monitoring events at the site are <br />' detailed in the Preliminary Investigation and Evaluation Report-December 1996(PIER) prepared <br /> by AGE. <br />' 2.0. PROCEDURES <br /> Monitoring and sampling procedures were performed in accordance with guidelines established by <br /> the San'.Ioaquin County Public Health Services - Environmental Health Division (PHS-EHD) and <br /> by the Central Valley Regional Water Quality Control Board (CVRWQCB) for the subsurface <br />' investigation of underground storage tank (UST) sites. <br /> 1 2.1. MONITORING WELL PURGE PROCEDURES <br />' On 01 December 1998,the water level in monitoring wells MW-2, MW3 and MW-4 were measured <br /> relative to the tops of the well casings using a Solinst water level meter. Well MW-1 could not be <br /> Iocated on the east edge of Milgeo Road due to construction. The depths to ground water and relative <br />' ground water elevations are given in Table 1. <br /> After depth to water measurements, a two-stage submersible pump was used to purge two <br /> monitoring wells suitable for sampling ground water. Eight to ten gallons of water was removed <br /> from MW-2 and MW-3 (minimum of three well volumes per well). Ground water in well MW-4 was <br /> observed to be covered by approximately 1.25 inches of petroleum product as measured with a <br /> -disposable bailer fitted;°therefore well-MW= was l grid bailed`approximately'fCN gallons of water. <br /> The physic characteristics of the ground water including temperature, pH and conductivity, were <br />' measured at 2-gallon intervals using an ICM water analyzer. Purged water was stored on-site in 55- <br /> gallon DOT-approved drums. <br /> Advanced GeoEnvironmental,Inc. <br /> 1 <br />