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• r3 <br /> i <br /> Table 2'j <br /> GROUND WATER ELVATIONS AND SAMPLE ANALYTICAL RESULTS <br /> ~ Ruiz Grocery Store <br /> 4491 West Durham Ferry Road <br /> Tracy,California <br /> fi <br /> Sample Collection TOC DTW GWE SPH: TPHg B T E X MTBE <br /> No. Date (feet) (feet) (feet) (feet) (µ1;/L) (mfu (4glu OWL) (uvjL), <br /> RW-1 10/19/95 -- 15.05 -- 0.00 18,000 2,000 1,500' 370 1,500 1,400 <br /> 12/19/95 --- 16.46 --• --- _ <br /> 12/20/95(3) --- --- --- 0.00 .220 I2 2.3 <0.5 23 410 <br /> 1/5/96(l) --- 16.79 -- - <br /> k,--- --- -- -- - <br /> 7/2/96 -- 15.30 -- --- --- <br /> i_-- -- <br /> -- --- <br /> 10/18/96 - 15.31 _ ',i - <br /> 8/20/98 99.07 - --- _ ;--- -- --- - --- <br /> l1/2/99 --- -- <br /> Domestic 914!91 --- -- --- 0.00 <50 <0.5 <0.5 <0.5 <0.5 <br /> Well 1/7/93 --- --- -- 0.00 <50 <0.5 <0.5 <0.5 <0.5 --- <br /> 417/93 --- -- 6.001.". <50 <0.5 450.5 <0.5 <0.5 <br /> 1/5/1996(l) --- -- - 0.00 ; 4550 <0.5 <0.5 <0.5 <0.5 <5.0 <br /> 7/2/96 0.00 !; .<50 <0.5 <0.5 <0.5 <0.5 <5.0 <br /> 10/18/96 -- - -- 0.00 <50 <0.5 <0.5 <0.5 <2.0 455.0 <br /> 1/22/97 .--- 0.001 <50 <0.5 <0.5 <0.5 <2.0 455.0 <br /> 4/22197 -- -- --- 0.00".j. 4550 <0.5 <0.5 <0.5 <2.0 <5.0 <br /> 7124/97 --- --- 0.00'!! 4550 <0.5 <0.5 <0.5 <2.0 455.0 <br /> 11/14/97 --- --- ---' - 0.00;;! 4550 1.2 140 0.7 <2.0 <5.0 <br /> 1/27/98 --- --- --- 0.00 II <,100 <0.5 <0.5 <0.5 <1.5 455.0 <br /> 5112198 --- -- -- 0.00 4550 <0.5 <0.5 <0.5 <0.5 <5.0(5) <br /> 8/20/98 -- -- --- 0.00 4550 , <0.5 <0.5 <0.5 <0.5 <5.0(5) <br /> 11/4/98 -- --- --- 0.00 <50 <0.5 X0.5 <0.5 <0.5 <5.0(5)' <br /> 3/3/99 -- --- -- 0:00 !p 4550 .<0.5 <0.5 <0.5 1.5 <5.0 <br /> 5/13/99 - 0.00 4550 <0.5 <0.5 <0.5 <0.5 455.0 <br /> 8/I3/99 - 0.00 <50 <0.5 <0.5 <0.5 <0.5 <5.0 <br /> 11/2199 --- --- --- 0.00 4550 <0.5 <0.5. <0.5 <0:5 455.0 <br /> HP-I 10/20/93 - --- --- 0.00 4550 <0.3 <0.3 <0.3 <0.3 --- <br /> HP-2 10/20/93 --- -- 0.00 i! " _50 <0.3 <0.3 <0.3 <0.3 <br /> HP-3 10/20/93 - - 0.00 Ii, <50 <0.3 <0.3 <0.3 <0.3 -- <br /> HP-4 10/20/93 --- - -- 0.00 4550 <0.3 <0.3 <0.3 <br /> HP-5 10/20/93 -- -- 000 4550 450.3 450.3 450.3 <0.3 - <br /> HP-6 10/20/93 --- -- 0 00 '� 80 <0.3 <0.3 <0.3 <0.3 --- <br /> Notes: Top of casing referenced to mean sea level <br /> TOC Depth to water <br /> DTW Ground water elevation(corrected for presence of SPH.if;applicable) <br /> GWE Separate-phase hydrocarbons } j <br /> SPH Total petroleum hydrocarbons as gasoline by EPA Method 8015(CA LUFT modified) fl <br /> TPHg Benzene,toluene,ethylbenzene and total xylenes by EPA Method 8020(CA LUFr modified) <br /> BTEX Methyl tertiary butyl ether by EPA Method 8020 through 1/22/98,EPA Method 8260 thereafter <br /> MTBE Not detected in concentrations exceeding the indicated method detection limit <br /> <50 Not tested/measured <br /> Micrograms per liter <br /> µg/L Samples unpreserved and 7 day holding period exceeded,samples analyzed 13 days after collection p <br /> (1) MTBE by EPA Method 8260=1,300µglL <br /> (2) Water sample collected from RW-I after approximately 18 hours of pumping at 5 gpm <br /> (3) In addition to MTBE,39 pgll.,of tert-Butanol was detected by,Method 8260. <br /> (4) All other fuel oxygenates were not present in concentrations exceeding method detection limits the sample. <br /> (5) Additional fuel oxygenates(ETBE,TBA,DIPS,TAME)were not detected in concentrations <br /> exceeding method detection limits by EPA Method 8240 or 8260. ` <br /> * Result within quantitation range;chromatographic.pattern not typical of fuel <br /> i <br /> � f <br /> Page 4 of.4 <br />