Laserfiche WebLink
Fourth Quarter 1995 Monrtonng and Samphng Report 2 <br /> The Southland Corporation,455 Grant Line Rd Tracy,CA January 22 1996 <br /> Monitoring Well Sampling and Analytical Results <br /> Groundwater samples were collected from wells MWA through MW-6, MW-8, MW-9,MWA 0, MW-11 <br /> and MW-15 Before sampling, at least three 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 analysis-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 A water sample from the <br /> groundwater extraction well GWE-1 was collected at the influent sample point located in the <br /> remediation compound and labeled INF The samples were stored on ice in an insulated container and <br /> transported under chain-of-custody manifest to GTEL Environmental Laboratories, Inc in Wichita, <br /> Kansas The groundwater samples were analyzed for BTEX and TPH-G using Environmental <br /> Protection Agency (EPA) methods 8020/modified 8015 <br /> Dissolved hydrocarbons were detected in groundwater samples from wells MWA, MW-5, MW-8, <br /> MW-9, and MWA0 (Table 1, Attachment 2) Benzene and TPH-G concentrations were greatest in <br /> groundwater from MWA 0 at 7,400 parts per billion (ppb) and 36,000 ppb, respectively (Figure 3, <br /> Attachment 1) The laboratory analytical reports and the chain-of-custody records for the <br /> December 13, 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, Inc <br /> Submitted by Approved By <br /> s <br /> Bruce D Beale Jaff S Auchterlonie <br /> Associate Geologist Lead Geologist <br /> Project Manager <br /> Ed K Stmonis, R G <br /> Senior Geologist <br /> Attachments �� ❑,�� <br /> 1 Figures - sY <br /> 2 Table 1 <br /> 3 Field Data Sheets r C' <br /> 4 Laboratory Analysis Report `I <br /> No 4422 <br /> -7j�JF C t l� ih ---� <br /> 01050495 RPT(STHL 5) D ,i GROUNIAVATIJl <br /> ❑❑❑ TECHNOLOGI <br />