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I 2nd Avenue South #177 Pacheco,CA 94553-5560 <br /> �McC�ampbe�IlAnalytical Inc Telephone 925-798-E620 Fax 925-798-E622 <br /> htlpJ/www mccampbel!cam Email roam®mccampbell carn <br /> . Advanced GeoEnvironmental, Inc Client Project ID Manteca City Corp Yard Date Sampled 10/18/02 <br /> 837 Shaw Road Date Received 10/22/02 <br /> Client Contact Brian Millman Date Extracted 10/22/02 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 10124102-10/27102 <br /> iGasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> xtraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0210391 <br /> ILab ID Client ID Matrix TPH(g) DF %SS <br /> 0210391-OOIA MW1/10-18-02 W ND 1 958 <br /> 0210391-002A MW2/10-18-02 W ND 1 978 <br /> 0210391-003A MW3/10-18-02 W ND 1 977 <br /> I <br /> 0210391-004A MW4/10-18-02 W ND<1000 2 107 <br /> 0210391-005A MW5/10-18-02 W ND 1 992 <br /> 0210391-006A MW6/10-18-02 W ND 1 107 <br /> 0210391-007A MW7/10-18-02 W ND 1 107 <br /> I - <br /> Reporting Limit for DF=1, W 50 µg/L <br /> ND means not detected at ar <br /> above the reporting limit S NA NA <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,productloillnon-aqueous Isquid samples to <br /> mg/L,and TCLP extracts in ug/L. <br />' #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are significant(aged gasoline?),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasohne9,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,1)liquid sample that <br />' contains greater than—2 vol %sediment,a)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be derived from <br /> gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br /> 1 , <br /> I <br />