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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7,Pacheco,CA 94553 Tele 510-798-1620 Fax;510-798-1622 Geological Audit Services Client Project ID Lockeford Beacon Date Sampled 01/26/94 1803 West March Lane,Ste A Date Received 01/26/94 Stockton, CA 95207 Client Contact Bob Marty Date Extracted 01/26-01/28/94 Client P 0 Date Analyzed 01/26-01/28/94 Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with BTEX* EPA methods 5030,modtried 8015 and 8020 or 602,California RW CS OF Ba Re on method GCFID 5030 Lab ID Client ID Matrix TPH(g)- Benzene Toluene Ethylben- Xylenes %Rec zene Surrogate 34029 MW-1/1-26-94 W ND ND ND ND ND 99 34030 MW-2/1-26-94 W 85,b,c I 24 099 ND 11 102 34031 MW-3/1-26-94 W ND ND ND ND ND 98 34032 MW-4/1-26-94 W I ND ND ND ND - ND 98 34033 MW-5/1-26-94 W ND I ND 077 ND ND 96 34034 MW-6/1-26-94 W ND,d 27 ND ND 18 89 I I I - - Detection Lumt unless other- W 50 ug/L 05 05 05 05 wise stated,ND means Not Detected S 10 mg/kg 0 005 0 005 0 005 0 005 *water samples are reported in ug/L,soil samples in mg/kg,and all TCLP eNtracts in m #cluttered chromatogram,sample peak co-elutes with surrogate peak +The following descriptions of the TPH chromatogram are cursory in nature and M p gr ry tore cCampbell Analytical is not responsible for their interpretation a)unmodified or weakly modified gasoline is siinuficant,b) heavier g�sohne I range compounds are significant(age gasohne?),c)h tergasoline range compounads(the most mobile fraction) are significant d)gasohne range compounds are se cant,no recognizable pattern e) TPH pattern that does not appear to�e errved from gasohne r�) one o a few isolated ppeaks present,g5 strongly aged gasoline or diesel range compounds are significant,h)(fighter than water immiscible phase is present DHS Certification No 1644 �� Edward Hamilton,Lab Director