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! M s M Mir M <br /> Project N08475-06 24B <br /> November 5,2002 <br /> Page 2 of 2 <br /> TABLE 1 <br /> SUMMARY OF GROUNDWATER ELEVATION AND ANALYTICAL DATA <br /> SHOP 10 MAINTENANCE STATION <br /> SAN!OA UIN COUNTY,CALIFORNIA <br /> TOC DEPTH TO GROUND WATER <br /> SAMPLE SAMPLE ELEVATION ELEVATION TPHg TPHd B T E X MTBE FOCs <br /> I D DATE MSL GROUNDWATER MSL (µg/1) (99/1) (99/1) (µg/1) (µg1]) (µg11) (µg13} (µg11} <br /> 0- (feet} (feet) <br /> VM-1 5/9/02 --- 4893 --- <50 520 130 39 86 19 <5 ND <br /> v VM-1 7/9/02 --- 5053 --- 4,900 670' 1,400 12 620 206 <5 ND <br /> VM-1 10/2102 --- 5247 --- 420 260 69 23 19 10 <5 ND <br /> VM-2 519/02 4950 --- <50 5,300 6,800 390 740 930 <20 TAME=230 <br /> VM-2 7/9/02 5008 25,000 3,800' 8,000 160 1,200 829 <5 ND <br /> VM-2 10/2/02 --- 5204 --- 12,000 4,800 5,300 17 710 160 <20 ND <br /> Notes TOC=Top of Casing <br /> MSL=Mean Sea Level <br /> TPHg Total petroleum hydrocarbons as gasoline <br /> TPHd=Total petroleum hydrocarbons as diesel <br /> BTEX=Benzene,toluene,ethylbenzene and total xylenes <br /> MTBE=Methyl tert-butyl ether by EPA Test Method 8260 <br /> FOCs=Tert-amyl methyl ether(TAME),ethyl tert-butyl ether(ETRE),di-isopropyl ether(DIPS)and tert-butanol(TBA)following EPA Test Method 8260 <br /> µg11=Micrograms per liter <br /> <=Less than laboratory method detection limit <br /> =Not available <br /> '= Sample contains hydrocarbons that do not match the diesel pattern However quantification is based on a diesel standard" <br />