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EUREKA 0130R4TORIES, INC. Air <br /> Chemical Analysis <br /> Research 8 Testing <br /> Corporate Office Branch Office Environmental Studies <br /> oh)w 6790 FLORIN PERKINS ROAD 17403 N E 28th STREET Robotics <br /> SACRAMENTO, CA 95828 REDMOND,WA 98052 Toxicology <br /> TEL (916)381-7953 TEL (206)885-0284 <br /> FAX (916) 381-4013 FAX (206)885-0284 <br /> December 20, 1995 <br /> Mr Eric Hubbard <br /> WALLACE KUHL &ASSOCIATES, INC <br /> 3050 Industrial Blvd <br /> West Sacramento, CA 95691 <br /> Subject Sample Chromatograms for ELI Order #93-02-090, 93-02-091, & 93-02-108 <br /> Reference- Project # 2086 05, Stockton Air National Guard <br /> Dear Mr Hubbard <br /> Please find enclosed copies of the subject chromatograms for the referenced project As discussed earlier, there <br /> is a $25 fee per workorder for each chromatogram set An invoice for $75 is also enclosed. <br /> I have reviewed the data packages with the GC supervisor and can offer some additional information. Note <br /> that the analysis is a Modified EPA 8015, for petroleum hydrocarbons. It was a commonly used analysis at the time <br /> because it allows for efficient screening for a range of hydrocarbons in a single analysis A disadvantage is that the <br /> detection limits are higher than those obtainable from the CA LUFT methods, which has since become the standard. <br /> Nevertheless, the chromatograms provided will allow you make some assessment of hydrocarbon presence for <br /> the samples Overall, as you can see, the samples are very clean with no indication of hydrocarbons detected. I have <br /> included a typical method blank which was analyzed as part of this sample batch to provide a background reference <br /> Additionally, please note the following- <br /> 93-02-090 Sample #35A has hydrocarbons detected, but does not match the pattern of hydrocarbons for any of <br /> the target analytes (jP4, Gasoline, Diesel, Motor Oil) as noted in the data report. <br /> 93-02-091 Samples #5A& #6A show a hydrocarbon response, but the pattern did not match the pattern of any <br /> target analytes and the response was far below the reporting limit. <br /> 93-02-108 Sample#1A has hydrocarbons detected, but the patter dW rtt i thift&the pattern of any target analytes <br /> as noted in the data report. <br /> I hope this is of help to you on flus project, Thank you and good luck. <br /> Sincerely, <br /> EUREKA LABORATORIES, INC <br /> 0 BY <br /> Bruce G. Trotter <br /> Project Manager <br />