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CAMBRIA
<br /> Table 2. Ground Water Purging and Analytical Data- Shell-branded Service Station Incident#98995874, 341 E Main Street,
<br /> R>pon, Callfomia
<br /> Dissolved MTBE MTBE
<br /> Well Gallons Oxygen TPHg Benzene Toluene Ethylbenzene Xylenes EPA 8020 EPA 8260
<br /> ID Date Purged (Mg/L) 0 (Concentrations to ppb) -
<br /> MW-1 10/07/98 30 14 <1,000 <10 <10 <10 <10 130,000 130,000
<br /> 11/10/98 75 --- <50 <0 50 <0 50 <0 50 <0 50 210 ---
<br /> 11/18/98 30 13 <500 <5 0 <5 0 <5 0 <5 0 3,300 ---
<br /> 11/24/98 75 12 <10,000 <100 <100 <100 <100 130,000 130,000
<br /> 12/01/98 95 1 1 <50,000 <500 <500 <500 <500 138,000 155,000
<br /> 12/08/98 60 13 <10,000 <100 160 <100 <100 130,000 130,000
<br /> 12/17/98 30 --- <20,000 <200 <200 <200 <200 190,000 160,000
<br /> 12/23/98 30 14 <10,000 <100 <100 <100 <100 100,000 69,000
<br /> 12/29/98 30 12 <50,000 <500 <500 <500 <500 139,000 127,000
<br /> 0I/06199 _ ; _ _ -- _ _- <50 _ <0.500 <0.500 <0.500 <0.500 145 .--
<br /> 101/14/99 3.0 1.7 <10,000 <100 <100 <100 <100 88,1011 86,700
<br /> 01/19/99 7.5 09 <50,000 <500 <500 <500 <500 152,000 156,000
<br /> 101/28/99 9.5 11 <25,000 <250 <250 <250 <250 133,000 149,000
<br /> X02102199 3.0 1.3 <50 <0.50 <0 50 <0.50 <0 50 85,,000 92,000
<br /> 102/11199 16.5 1.5 4,000 <10 <10 <10 <10 180,000 ..-
<br /> :02/18/99 17.0 - 2.1 <20,000 <200 <200 <200 330 140,000 110,000
<br /> ,02124/99 12.0 1.4 <2,000 <20 <20 <20 <20 150,000 160,000
<br /> 103/02199 18.0 --- <2,000 <20.0 <20.0 <20.0 <20.0 500,000 145,000
<br /> 803111/99 13.0 2.4 <50,000 <500 <500 <500 <500 112,000 1.51,000
<br /> '03119/99 10.0 1.6 <50.0 <0 500 <0 500 <0.500 <0 500 132,000 114,000
<br /> 43/22199 15.0 1.$ <500 <5.00 809 <5.00 <5 00 1.13,000 81,800
<br /> .. _ _ -_- _ _ _ _ _
<br /> I
<br /> I
<br /> Abbreviations and Notes
<br /> MTBE =Methyl tert-butyl ether by EPA Method 8020 or 8260
<br /> TPHg =Total petroleum hydrocarbons as gasoline by modified EPA Method 8015
<br /> Benzene,toluene,ethylbenzene,and total xylenes by EPA Method 8020
<br /> mg/L=Mtlltgrams per liter
<br /> ppb=Parts per billion
<br /> at=Be low detection hmtt of n ppb
<br /> ---=Nc t analyzed
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