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' Sequoia 680 cbes-peeke Drive Redwood Cry CA 94033 (650)364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)985-9600 FiVC(925)988 9673 <br /> Analytical 819 Su834ter Avenue Suite 8 Sacramento CA 95 916 921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North,Ste D Pet 54� 4 2 1865 FAX(707)792-0342 <br /> 1 � <br /> LAttention <br /> -qublin "mien#Prolect�b Unocal SS#2 , Stacicton Samp�et� Feb 4;i999� <br /> Court,Suite J Sample Matmc Water �0�� Received Feb 5, 1999 <br /> 94568 Analysts Method EPA 5030/8015 Mod���20 Reported Feb 10, 1999 <br /> eanna Harding First Sample# 902-0606 �w �.� <br /> TOTAL PURGEABLE PETROLEUM HYDROCM gmm�wgf xV <br /> i <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I D I D. I D I D <br /> pg/L 902-0606 902-0607 902-0606 902-0609 902-0610 902-0611 <br /> NP-1 MW-10 MW-2 MW-1 MW-3 MW-6 <br /> Purgeable <br /> ' Hydrocarbons 50 6,000 160,000 50,000 N D N D N D <br /> Benzene 0 50 210 14,000 2,200 N D 055 N D <br /> Toluene 0 50 130 46,000 23,000 N D N D N D <br /> ' Ethyl Benzene 050 280 3,400 4,100 N D N D N D <br /> Total Xylenes 050 1,700 20,000 22,000 24 N D N D <br /> Chromatogram Pattern Gasoline Gasaline Gasoline - -- - <br /> Quality Control Data <br /> ' Report Limit Multiplication Factor 20 1,000 100 10 10 10 <br /> Date Analyzed 2/6/99 2/6/99 2/6/99 2/6/99 2/6/99 2/6/99 <br /> ' Instrument identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 113 109 117 110 114 111 <br /> (QC Limits = 70-130%) <br /> ' Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> ' SEQUOIA ANALYTICAL,#1271 <br /> ' <br /> ?Ilanne'Fegley <br /> Project Manager <br /> 9020606 GET i I> <br />