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HT1 A <br /> Mr Michael Inturna <br /> Page 2 <br /> level recovery Purge water was contained in apps opnately labeled DOT-approved 55-gallon drums <br /> and is currently being stored onsite Purge logs are included in Attachment A <br /> Groundwater samples were delivered under chain of custody protocol to Argon Laboratories (FLAP <br /> 92359) Analysis consisted of BTEX and MTBE using EPA method 8020, and TPHg and TPHd using <br /> modified EPA method 8015 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> No petroleum hydrocarbons were detected in the samples from wells MW 1 and MW2 In the sample <br /> collected from MW3 low levels of benzene, ethylbenzene and xylenes were detected TPHd was <br /> detected at a concentration of 21,000 parts pei billion (ppb) and MTBE was present at a level of 450 <br /> ppb The laboratory quantified "TPH(Y" at 420 ppb but noted that the chromatogram was not typical <br /> of gasoline and was dominated by heavier (diesel?) hydrocarbons Analytical results are summarized in <br /> Table 2 Attachment B contains laboratory i eports and chain of custody documentation <br /> The next quarterly groundwater sampling event 1s scheduled for May 2000 You will be notified prior <br /> to conducting the field work If you have any questions or comments please contact Ground Zero at <br /> your convenience <br />• Respectfully, <br /> Grou ero Analyse/s, enc <br /> 0 -1 aED GEO <br /> 7:vr2 Sean Garvey, ,� zO <br /> 70t <br /> st ' <br /> GREGORY P. <br /> /J-�_ <br /> Noo.. 50 5023 <br /> Gregory P Stahl, RG 5023 <br /> CA Certified Hydrogeologlst 264 `fl ♦P <br /> 9TF OF GAI.IF <br /> Attachments <br /> cc Mr Norm Crum, Woolsey Oil, Inc _ <br /> Ms Karen Collins, Envn onmental Closul es, Inc <br /> Mr Mark List, RWQCB <br /> Mr Richard McPherson, Property Owner <br />• <br /> .)hey chtlgjnr11gm2000 dog <br />