ARCHIVED REPORTS XR0000928 - Laserfiche WebLink

Home Browse Search

' 1 Quarterly Report —Second Quarter 2004 w STRONG'PROPERTY 5157 West Business,Loop 205, Tracy, California' ' . I.Q. INTRODUCTION. r , At the requesY:of Messrs. Robert and Mike Strong; Advanced GeoEnvironmental„mc, (AGE),has prepared•this'quarterly report for,the property located at 5157 West Business Loop 205, Tracy, California.-The sco e of work included the performance of a uarterl' ground water•monitorin , p p q Y ln' ,g event and preparation of this report: The site and the surrounding area are illustrated on Figure 1. Structures and monitoririg well locations are illustrated on Figure 2. Quarterly monitoring data from ri July 199.8 to the,present is summarized in the tables of this report. Historical site investigation ,,information is summarized in Appendix A. GeoTracker confirmation pages of the submitted'depth ' to water and:laboratory electronic deliverable format (EDF) files are included in Appendix B. 2.0. PROCEDURES ' On•2`l June 2004;twelve monitoring,wells (MW-1 through MW=12) and two domestic water wells ' (DW5157 and,DW5055) were purged and sampled.' All field work procedures and ,reporting ` requirements are in accordance with guidelines issued by the Central Valley.Regional Water Quality . Control Board(CVRWQCB)'for'subsurface investigations of underground storage tank(UST)sites and guidelines issued by San Joaquin County Environmental Health Department(EHD)for sampling, ' of ground water monitoring,wells. 2.1.` WELL MONITORING AND PURGING On 2l Ji.me-2004,monitoring wells MW-1 through MW=12 and,domestic water wells DW5157 and DW50551were purged and sampled A Solinst water level meter'was used,to measure the depth to. ! ground water to`the'nearest 0'.01-foot in the twelve'nionitoring wells relative to the'tops of the well ' casings The ground watereleyations and gradient,were determined from these data.(Table 1): ' r ; •After recording wAte r"level`measurements, new disposable plastic bailers'were used to purge each � monitoring•;well°!of standing,.water. Between.-'six and eight gallons of.water' .(a minimum= of _ -; Casing,wafer volumes per well);were removed"from each well.Ground water temperature,pH and '. conductivity were measured at regular,intervals during purging using an Oakton water.analyzen To -,'purge DW5157 and DW5055,•a.hose bib was opened on the.water storage tank. The pump was,• allowed'to cycle„on and off for, approximately`15 minutes. Field sheets and data are included in Appendix C. Purged water was stored on-site in labeled, 55-gallon Department of Transportation. . (DOT)-approved druins. , ' v Advanced GebEnvironmental,Inc.