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Table 2 GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS Ruiz GrOLcry 4491 West Durham Ferry Road Tracy,California MTBE MTBE Fuel Oxys 1,2-DCA,EDB Sample Date TOC DTW GWE LNAPL TPHg B T E X 8020 8260 8260 8260 No (feet) (feet) (feet) (feet) (pg j) (P L) (pglL) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) ^_ HP-1 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- --- HP-2 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- --- HP-3 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- - - --- __ HP-4 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- --- HP-5 10/20/93 --- --- --- 000 <50 <03 <0 3 <0 3 <0 3 --- --- --- --- HP-6 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- --- MCLS --- --- --- --- --- --- 1 150 700 1,750 --- 13 --- Notes TOC Top of casing referenced to mean sea level DTW Depth to water GWE Ground water elevation(corrected for presence of SPH,if appli('able) LNAPL Light Non-Aqueous Phase Liquid gasoline TPHg Total petroleum hydrocarbons as gasoline by EPA Method 8015(CA LUFT modified) BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020 MTBE 8020 Methyl tertiary-butyl ether by EPA Method 8020 MTBE 8260 Methyl tertiary butyl ether by EPA Method 8260 Fuel Oxys Fuel Oxygenates(MTBE,TBA,ETRE,D1PE,TAME)by EPA Method 8260 Pb Scavenge Lead Scavengers(1,2-DCA,EDB)by EPA Method 8260 <50 Not detected in concentrations exceeding the indicated method detection limit --- Not tested/measured µg/L Micrograms per liter (1) Samples unpreserved and 7 day holding penod exceeded,samples analyzed 13 days after collection (2) Water sample collected from RW-I after approximately 18 hours of pumping at 5 gpm * Result within quantitation range,chromatographic pattern not typical of fuel MCLS California Maximum Contaminant Levels(pnmary)for drinking water Page 9 of 9 I