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Table 1 <br /> GROUNDWATER ELEVATIONS AND SAMPLE,ANALYTICAL RE,SULI S <br /> Ruiz Grocery <br /> 4491 West Durham Ferry Road <br /> Tracy,California <br /> MTBE, MTBE Fuel Oxys 1,2-DCA,EDB <br /> Sample Collection TOC DTW GWE SPH TPHg B T E X 8020 8260 8260 8260 <br /> No Date (feet) (feet) (feet) (feet) (gg/L) (jig!) (pg/L) (ltg/L) (ug/L) (ug/L) (Ng/L) (1tg/L)_ OWL) <br /> HP-1 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- <br /> HP-2 10/20/93 --- -- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- <br /> HP-3 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- ___ <br /> HP-4 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --- <br /> HP-5 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- --_ --- <br /> HP-6 10/20/93 --- --- --- 000 <50 <0 3 <0 3 <0 3 <0 3 --- --- __- _-- <br /> Note,S <br /> TOC Top of casing referenced to mean sea level <br /> DTW Depth to water <br /> GWE Ground water elevation(corrected for presence of SPH,if applicable) <br /> SPH Separate-phase hydrocarbons <br /> TPHg Total petroleum hydrocarbons as gasoline by EPA Method 8015(CA LUFT modified) <br /> BTEX Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020 <br /> MTBE 8020 Methyl tertiary-butyl ether by EPA Method 8020 <br /> MTBE 8260 Methyl tertiary butyl ether by EPA Method 8260 <br /> Fuel Oxys Fuel Oxygenates(MTBE,TBA,ETBE,DIPE,TAME)by EPA Method 8260 <br /> Pb Scavengers Lead Scavengers(1,2-DCA,EDB)by EPA Method 8260 <br /> <50 Not detected in concentrations exceeding the indicated method detection limit <br /> --- Not tested/measured <br /> µg/L Micrograms per liter <br /> (1) Samples unpreserved and 7 day holding period exceeded,samples analyzed 13 days after collection <br /> (2) Water sample collected from RW-I after approximately 18 hours of pumping at 5 gpm <br /> * Result within quantitation range,chromatographic pattern not typical of fuel <br /> Page 7 of 7 <br />