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A <br /> Mi <br /> Y . <br /> ANATEC <br /> LABORATORIES <br /> INC <br /> 435 Tesco,ir Circle Santa Rosa, California 95401 707-526-7200 <br /> Mr . Fred Davis August 12, 1987 <br /> -- r.,�u��, ANATEC Log No: 9857 (1-3) <br /> 191 Harder Road, Ste 25 Series No: 359/019 <br /> Hayward , CA 94544 Client Ref: P.O. 9140 <br /> I <br /> Subject: ASAP Priority Analysis of Two Soil Samples Identified as <br /> "Universal Engineers (EBMUD) , 1804 W Main St Stockton" <br /> Received July 28 , 1987 . <br /> Dear Mr. Davis: <br /> Analysis of the samples referenced above has been completed. This <br /> report is written to confirm results transmitted verbally on <br /> July 30 , 1987 . <br /> . The samples were delivered to the laboratory under documented <br /> chain-of-custody. On receipt, sample custody was transferred to <br /> ANATEC sample control personnel who subsequently documented <br /> receipt and condition of the samples and immediately made them <br /> available for analysis. One liquid sample ("Diesel Water <br /> Surface") was placed on "hold" (stored, not analyzed) according to <br /> instructions received with the sample set. <br /> I <br /> On July 29, 1987, the requested analytical parameters were changed <br /> in accord with receipt of new instructions. The two soil samples <br /> were immediately prepared for extractable hydrocarbons measure- <br /> ments by thorough mixing and subsequent extraction with methylene <br /> chloride; extraction, aided by sonication, was performed three <br /> succP sive times for each sample. Extracts were then combined, <br /> dried over sodium sulfate and concentrated in Kuderna-Danish <br /> apparatus . <br /> Extracts were then analyzed by capillary column gas chromatography <br /> with flame ionization detection. Preparation and analysis of <br /> samples was accompanied by similar treatment of a method blank and <br /> a diesel-fortified sample. Response of the chromatographic system <br /> to calibration standards prepared with diesel fuel was compared <br /> with system response to samples for purposes of qualitative and <br /> quantitative interpretation. <br /> B101091C,11 StUdle; Laboratory Analysis Research <br />