ARCHIVED REPORTS XR0000933 - Laserfiche WebLink

Home Browse Search

• 1 " 1 Quarterly Report - Third Quarter 2003" STRONG PROPERTY 1 _ 1; 5157 West Business Loop 245, Tracy;'California ; 1:0.,r. INTRODUCTION At the request of Messrs:"Robert and'Mike Song,Advanced'GeoEnvironmental, Inc. (AGE) has- " ' prepared this',quarterly report for,the property located at 5157.West Business 'Loop ,205Tracy, California. The scope of work included ground water sampling of monitoring wells MW 1',through• MW9, domestic well DW5157 and preparatibii of this report. The site and the surrounding area are illustrated,in-Figure f. Structures and monitoring well locations are illustrated on Figures 1gu g gores 2 and 3. • Quarterly monitoring data from July 1998 to the present is summarized in Tables 1 and 2.of.this report. . , : 2.0. PROCEDURES 1 Nine monitoring wells and one domestic well were purged and sampled on 1 S September 2003.All fieldwork procedures and reporting requirements are in accordance with'guidelihes issued by the Central Valley Regional Water Quality Control Board(CVRWQCB).for subsurface investigations of underground storage tank (LIST) sites andguidelines' issued 'by San.'Joaquin County ' Environmental Health Department (EHD) for samplirig of ground water monitoring wells. ; ' 2.1. WELL,14oNrroRING AND PURGING On IS September 2003, monitoring 'wells MW-1 through MW-9 and DW5157 were purged and sampled. Duc'to construction activities.perfo med'at the'site, well MW10 could not be located for the third consecutive quarter and subsequently.was not monitored or sampled.'A Solinst water level rmeter was used,to measure the depth to ground water`to'the nearest 0.01=foot' the eight monitoring wells relative to the tops of-.the well casings: The ground water elevations and gradient were determined from these data(Table 1). tAfter recordingwater level measurements;new disposable plastic bailers were used to purge each , monitoring well 'of standing, water.'Between 6.00 and 8.50 gallons 'of water (a-minimum'of 3 casing-water 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 analyzer.To purge DW5157, a Bose bib was.opened on the•water•storage'tank. The pump,was allowed to cycte i on andoff for approximately 15.minutes.,Field-sheets and data are included in•Appendix'A.'Purged water was stored on-site in.labeled,.55=gallon DOT-approveddrums., i'I Advanced GeoEnvironmental,Inc.