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Ms Laura Odenthal Project G67-05 01 <br /> August 25, 1992 <br /> Page 2 <br /> t <br /> Samples were cooled with ice packs and delivered, under chain-of-custody <br /> control, to Sequoia Analytical laboratory for analysis <br /> Quality Control samples for third quarter 1992 monitoring included a trip blank, <br /> field blank and a duplicate well sample (labeled X-DUP) The duplicate sample <br /> was collected form monitoring well MW-1 <br /> ANALYTICAL RESULTS <br /> Samples were analyzed for low to medium boiling point hydrocarbons, <br /> benzene, toluene, ethylbenzene, and total xylenes Analytical results from the <br /> third quarter 1992 monitoring event and four previous events are summarized in <br /> Table 2 Certified analytical reports and chain-of-custody records for this <br /> quarters event are included as attachments to this letter <br /> If you have any questions, please call <br /> Very truly yours, <br /> l <br /> EMCON Associates <br /> JZmes R Pittilla <br /> Environmental Sampling Coordinator <br /> Phillip R Graham/ <br /> Environmental Sampling Supervisor <br /> JRP/PRG trp <br /> Attachments Table 1 Monitoring Well Field Measurement Data <br /> Table 2 Summary of Analytical Results <br /> Site Map, Certified Analytical Reports and <br /> Chain-of-Custody Records, Water Level/ <br /> Floating Product Survey, <br /> Water Sample Field Data Sheets <br /> cc Dan Kirk, Shell Oil Company <br /> -0501 <br /> sampiingooc G67 <br />