Laserfiche WebLink
<�l <br /> •� Second Quarter 1995 Mondonng and Sampling Report z <br /> The Southland Corporation,455 Grant Una Rd,Tracy,CA July 19, 1995 <br /> Monitoring Well Sampling and Analytical Results <br /> Groundwater samples were collected from wells MWA through MW-6, MW-8 through MWA 1, MW-15 <br /> and GWE-1 Before sampling,at least four well-casing volumes of groundwater was removed from <br /> each of the monitoring wells, unless the wells were purged dry Field measurements of temperature, <br /> conductivity, and pH were recorded during well purging The groundwater samples were collected <br /> using disposable bailers and placed in analysis-specific sample containers with analyses-specific <br /> preservatives The samples were then sealed and labeled with the job identification number,the <br /> sample number,date, time,and type of laboratory analysis required The samples were stored on ice <br /> in an insulated container and transported under chain-of-custody manifest to GTEL Environmental <br /> Laboratories, Inc in Concord, California The groundwater samples were analyzed for BTEX and <br /> TPH-G using Environmental Protection Agency(EPA) methods 8020/modified 8015 <br /> Dissolved hydrocarbons were detected in groundwater samples from monitoring wells MWA, MW-8, <br /> MW-9, MW-10, and the extraction well GWE-1 (Table 1,Attachment 2) The highest concentrations of <br /> benzene and TPH-G were detected in MW-10 at 8,800 parts per billion (ppb) and 44,000 ppb, <br /> respectively(Figure 3,Attachment 1) The laboratory analytical reports and the chain-of-custody <br /> records for the July 16, 1995 sampling event are included in Attachment 4 <br /> Please contact Groundwater Technology's West Sacramento office if you have any questions or <br /> comments regarding this report <br /> Sincerely, <br /> Groundwater Technology,Inc Groundwater Technology, <br /> Submitted by Approved By <br /> Bruce D Beale Brian H Garber <br /> Associate Geologist Environmental Geologist <br /> Project Manager <br /> r <br /> E K Simonis, R G <br /> Senior Geologist <br /> Attachments <br /> 1 Figures <br /> 2 Table 1 <br /> 3 Field Data Sheets o <br /> 4 Laboratory Analysis Report 0 z <br /> No 4422 c,) <br /> cat,lf1111 <br /> r1 <br /> 01050M RPT(STHL 5) <br /> ��❑� GROUNDWATER <br /> DUE]TECHNOLOGY <br />