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TABLE 3 GROUNDWATER EXTRACTION SYSTEM r ANALYTICAL DATA Former Chevron Service Station 9-5775 301 West Kettleman Lane Lodi, California Sample Sample TPHg Benzene Toluene Ethyl- Total MtBETBA DIPE EtBE TAME Ethanol Methanol EDB 1,2 -DCA Date Location benzene Xylenes ( L) ( /L) ( /L) ( f.) ( L) ( L) ( L) ( L) ( L) ( L) ( L) (991L) ( L) ( L) 06/04/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/11/02 EFFL <50 <0.5 0.60 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/18/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 06/25/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 <5 <50 <0.5 <0.5 07/02/02 EFFL <100 <20 <20 <20 <20 <20 <10 <20 <20 <20 <50 <100 <20 <20 07/16/02 EFFL <100 <20 <20 <20 <20 <20 <10 <20 <20 <20 <50 <100 X20 <20 07%30/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 08/13/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 08/28/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 09/12/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 '09/24/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 ,10/06/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 L10/22/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 11/05/02 EFFL <50 <0.5 <0.5 <0.5 <0.5 <2 <10 <2 <2 <2 <100 <400 <2 <2 11/20/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 +12103/02 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 12!17/02 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 01/07/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 01/21/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 02/04/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 02/19/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 0/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 I t 103 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 04,u1/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 L04/15/03 05/06/%03 EFFL <50 <0.5 <0.5 <0.5 <0.5 <0.5 <5. <0.5 <0.5 <0.5 <50 <400 <0.5 <0.5 05/24/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 06/05/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 i 06/18/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 07/14/03 EFFL <100 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 ~ 08/20/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 09/16/03 EFFL <50 <2 <2 <2 <2 <2 <10 <2 <2 <2 <100 <400 <2 <2 !Discharge Limitation ND <51 <51 <51 <51 ND ND ND NO ND ---- --- ---- - -- �LANAi1tN15: ANALYTICAL LABORATORIES yl - micrograms per Itder Efff - Effluent PHg - Tofal Petroleum Hydrocarbons as Gasoline 61PE = DI -Isopropyl ether Sequoia Analytical (ELAP #'1271, #1624 and #12380) I A -DCA a 1,2 Nchbroethane ME - Ethyl tertiary butyl ether K1R Analytical (FLAP #2236) -,BE= Methyl tertiary butyl ether TAME - Tertiary amyl methyl ether Lancaster Laboratories (ELAP # 2116) BA - tert8utyt-alcahoi NA = Not analyzed for this constituent .DB - Ethylene dibromide ND a Not Detected or below method detection limits NO7'ESe ^'urn of benzene, toluene, ehtybenzene and xylenes not to exceed 0.005 myL (5 ppb). 'sample oollected after approxlmateiy 1,400 gallons of tap water was pumped through system during cleaning procedures. ' Sample Included 2•butanaone and tetrahydrofuran which were Quantified as TPHg. �a"'aa aam rrr amaarmey r.sao Wan a ro waw ware aa'van �+ad. �saaa,nn dae'+ip PaaeCwaa. 7eueYgtlrolwen repaned u NO {<sl. split sample collected for Qualitative analysis (Kiff Analytical) - 30 t sample collected for Qualitative analysis (Lancaster Laboratories) F1:/ChevrorV95775/Tables;Gwe-gpr.xls 12 of 12