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SUMMARY OF GROUNDWATER MONITORING DATA <br /> Second Quarter 1993 ` <br /> ARCO Service Station#548 <br /> 1612 Hammer lane,Stockton <br /> (micrograms per liter(µgll), unless noted) <br /> Floating Total <br /> Well TD Depth to Product Oil& Hydrocarbons, <br /> and Sample trampling Water Thickness Total TPI1 as Grease Gravimetric <br /> Depth Date Feet feet Benzene Toluene Eth lbenxene Xylenes Gasoline (mg/1) m <br /> MW-1 (56) 6f1193 ".24 -- 0.9 ND ND ND 160* ND ND <br /> MW-2(61) 6/7/93 4Y84 -- ND ND ND ND ND - <br /> MW-3(62) 617/93 43.75 -- ND ND ND ND <150** _ <br /> MW-4(63) 6/703 45.22 -- ND ND ND ND N l 1 <br /> MW-5(61) 6/7193 43.38 -- 40 1.4 42 58 1,100 <br /> TPH=Total petroleum hydrocarbons <br /> ND=Not detected <br /> *=The sample contains components eluting in the gasoline range that were quantitated as gasoline. <br /> The chromatogram does not match the typical gasoline fingerprint. <br /> **=Raised MRL due to matrix interference. The sample contains a single non-fuel component eluting in the gasoline range. <br /> The chromatogram does not match the typical gasoline fingerprint. <br /> Sampling Doc.OG71-033.01 <br />