Laserfiche WebLink
' Quarterly Report - June 1999 <br /> iFormer Curtiss Pontiac Buick <br /> 2450 Toste Road, Tracy, California <br /> 1.0. INTRODUCTION 4� <br /> At the request of Mr Joe Toste, Advanced GeoEnvironmental, Inc (AGE) has prepared this _ <br /> Quarterly Report for 2450 Toste Road, Tracy, California (the site) The scope of work included jise <br />' sampling of five ground water monitoring wells The site setting is illustrated in Figure 1 A plain <br /> view of the site is illustrated in Figure 2 O <br />' A summary of previous investigations at the site is included in the Preliminary Investigation and <br /> Evaluation Report(PIER),prepared by AGE, dated 15 August 1997 and Quarterly Report,prepared <br />' by AGE, dated 18 September 1997 Ground water monitoring data collected from monitoring well <br /> MW-3,which is part of the underground storage tank(UST)release investigation at 2420 Grant Line <br /> Road, is included in this investigation to delineate the down gradient extent of the dissolved <br />' hydrocarbon plume and to determine ground water flow direction and gradient <br /> This report is prepared in accordance with Central Valley Regional Water Quality Control Board and <br />' San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) <br /> guidelines <br /> 1 � <br /> 2.0. PROCEDURES <br /> The ground water monitoring activities were conducted in accordance with Central Valley Regional <br /> Water Quality Control Board and San Joaquin County Public Health Services - Environmental <br /> IHealth Division (PHS-EHD) guidelines <br />' <br /> 21 GROUND WATER DEPTH MEASUREMENT AND PURGING <br /> On 21 June 1999, a Solinst water level meter was used to measure the depth to ground water in each <br /> well relative to the top of the well casing After ground water depth measurements were collected, <br /> monitoring wells MW-IA and MW-2A were purged using a two-stage submersible pump, while <br /> wells MWAB, MW-2B, MW-3, MW-5 and MW-6 were purged with pre-cleaned PVC bailers Four <br /> gallons of water(a minimum of 3 well volumes per well) were evacuated from wells MW-1B, MW- <br /> 2B, MW-3, MW-5 and MW-6, and ten gallons of water were purged from MW-IA and MW-2A <br /> ITemperature,pH and conductivity were measured at 1-gallon intervals in wells MW-I B, MVV-2B, <br /> MW-3, MW-5 and MW-6, and at 2-gallon intervals in wells MW-IA and MW-2A The field data <br /> were measured with an ICM model 52200 crater analyzer Logs of the field data are included in <br /> Appendix A Purged water was stored on-site in labeled 55-gallon drums <br /> I <br /> Advanced CeoEn%cronmentai Inc <br /> 1 <br />