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110 2nd Avenue South,#D7,Pacheco CA 94553-5560 <br /> Inc.McCampbell Analytical, ITelephone 925-798-1620 Fax 925-798-1622 <br /> Z4 1 Website www mccampbell corn E mail main®mccampbell com <br /> Advanced GeoEnvironmental,Inc Client Project ID Flag City Chevron Date Sampled 07/01/05 <br /> 837 Shaw Road <br /> Date Received 07/06/05 <br /> Client Contact Tim Cuellar Date Extracted 07/06/05 <br /> Stockton, CA 95215 <br /> Client P O Date Analyzed 07/06/05 <br /> Diesel Range(C10-C23)Extractable Hydrocarbons as Diesel* <br /> Extraction method SW3510C Analytical methods SW8015C Work Order 0507050 <br /> Lab ID Client ID Matrix TPH(d) DF %SS <br /> 0507050-OOIA MW20A W ND 1 100 <br /> 0507050-002A M W20B W ND 1 101 <br /> i <br /> Reporting Limit for DF=1, W 50 µg/L <br /> ND means not detected at or <br /> above the reporting limit S NA NA <br /> "water samples are reported inµg/L,wipe samples inµg/wipe,soil/solid/sludge samples in mg/kg,productloil/non-aqueous liquid samples in mg/L,and <br /> all DISTLC I STLC/SPLP I TCLP extracts are reported in liglL <br /> #cluttered chromatogram resulting in coeluted surrogate and sample peaks,or,surrogate peak is on elevated baseline,or,surrogate has been diminished <br /> by dilution of original extract <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 diesel is significant b)diesel range compounds are significant no recognizable pattern,c)aged diese]9 is significant),d) <br /> gasoline range compounds are significant e)unknown medium boiling point pattern that does not appear to be derived from diesel,f)one to a few <br /> isolated peaks present,g)oil range compounds are significant,h)lighter than water immiscible sheen/produ t is present,i)liquid sample that contains <br /> eater than--1 vol %sediment,k kerosenelkerosene ran e/et fuel range,l bunker oil,m fuel oil,n)stodIVrd solvent/mineral spirit <br /> DHS Certification No 1644 Angela Rydelius,Lab Manager <br />