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Table 4 I Soil Analytical Data Chevron Service Station 9-6171 6633 Pacific Avenue Stockton,California SAMPLE DATE DEPTH TPH-G TPH-d B T E X MTBE MOIL LEAD PCE ID b sI (m (m lk (m (m /k (tri— (rte (m (m /k ) (mgag) (m WV- MW IC 119!1987 14 ND' ND' ND' ND' MW 1J 1/9/1987 49 ND' — ND' ND' ND' (Reference Gmmdwaw Technology Inc Suhmrface lnvesagawn Repom Chevtnn Servrce Sratan N9 6171 6633 Pacific Avenue Stockton Cat fomia February 27 1987) MW-2 7/24/1990 5 5 ND ND ND ND ND = 155 ND — ND ND ND ND 505 ND ND ND ND ND — MW-3 7125/1990 55 ND = ND ND ND ND — = 155 ND ND ND ND ND 505 ND ND ND ND ND MW-4 7/29/1990 5 5 ND — ND ND ND ND — — 155 ND ND ND ND ND — — — 505 ND ND ND ND ND — — MW-5 8/511990 55 ND ND ND ND ND 155 ND ND ND ND ND 555 ND — ND ND ND ND — — — I (Reference Srarra Envno la Services Suhmafa Inverrigatlon Repoli CAewon Ser a Station#9 6171 6633 Pacfw Awnw Stockron Calfomm October 8 19%) MW-1 7/31/1992 61 ND ND ND ND NO MW-6 7/3011992 16 ND — ND ND ND ND - 56 ND — ND ND ND ND — - — I (Reference Stara Euvaonmemsl Services Subsurface Invesugawn Report Chevnvn Service Statmn#9 6171 6633 Pacific Avenue Stockton California Augus125 1992) B-1 9/25/1995 5 ND ND ND ND ND 10 ND — ND ND ND ND — 15 ND -- ND ND ND ND — — — 20 ND - ND ND ND ND — — — — B-2 9/25/1995 4-5 ND ND ND ND ND 9-10 ND ND ND ND ND 14-15 ND ND ND ND ND — -- -- 19-20 ND = ND ND ND ND — _ — 13 3 9/25/1995 2 56° ND 0 042 017 16 Boring not compieted past 3 R due to drilling refusal by metallic object at 4 R bp B4 9/25/1995 5 ND — ND ND ND ND - — — 10 ND ND ND ND ND I 15 ND ND ND ND ND — 20 ND ND ND ND ND B-5 9/25/1995 5 ND ND ND ND ND 10 ND ND 0 013 ND 0 031 — — — 15 ND — ND ND ND ND — — 20 ND ND ND ND ND _ — (Reference Pactfic Envunnmenul Group Inc Sell lnvesagattan Report Chevron U S-A Ser me Statmn N9-6171 6633 Pacific Awnue Stockton Cal foram January 10 1996) WOT-1 12/1/1998 175 110' 4900' Not analyzed mdividlually Total BTEX-8 4' ND 7400' ND 15, WOT-2 12/1/1998 85 ND ND ND ND ND ND ND ND ND ND (Reference Pacific Euwonmental Group Inc R'=m Otl UST Chamckriratmn Chevron Servrce Sratton R9 6171 6633 Pacrfie Avenue Stockton Cahfomta December 2 1998) MW 8 3/20/2001 30 ND ND ND ND ND ND — — -- 385 -385 ND = ND ND ND ND 0 065 — MW 9 3/20/2001 30 ND ND ND ND ND ND 385 ND ND ND ND ND ND MW 10 3/20/2001 30 ND — ND ND ND ND ND — — 385 ND — ND ND ND ND ND MW IID 3120/2001 69 ND = ND ND ND ND ND w 76 ND ND ND ND ND ND 84 ND ND ND ND 0 018 ND MW 12 3120!2001 30 ND ND ND ND ND ND = _ 385 ND ND ND ND ND ND MW-13 3120/2001 30 ND ND ND ND ND ND — — 385 ND ND ND ND ND ND N1FileslPro)ectslChevronlRetadl#9-61711Site Conceptual ModellGroundwaterElevations As 1 of 2