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-160 <br /> Table 2 <br /> Groundwater Elevation and Analytical Data(ARCO) <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Drive <br /> Stockton California <br /> Well Depth Product Groundwater Groundwater Ethyl Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) ft) (ft MSL) Chan aft) (ugll) (ug") ugll (ug") (ugll) (u fl) (mg1L) <br /> MW 5 311011999 P 586 — -4 82 220 $06 <0 5 <0 5 <05 <0 5 <5 28 <br /> (cont) 6/WI999 Well box inaccessible <br /> 911311999 Well box inaccessible <br /> 1211611999 P 925 — -821 — 186 096 <0 5 <05 103 <25 33 <br /> 312312000 P 461 — 357 464 355 0 620 <0 5 <05 128 <2 5 2 0 <br /> 6121 12000 P 696 — -592 2 35 <50 <0 5 <0 5 <05 <0 5 Q 5 02 <br /> 911312000 P 868 — 764 1 72 <50 <0 5 <O 5 <05 <0 5 425 241 <br /> 12!15!2000 P 816 — 712 052 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 083 <br /> 31212001 P 610 — 506 206 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 35 <br /> 5110/2001 P 619 — 515 -009 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 3 0 <br /> 8!2212001 P 888 — 784 2 69 <50 <0 50 <0 50 <0 50 0 58 <2 5 — <br /> 12/512001 P 807 — 703 081 82 067 <0 50 <0 50 0 57 <2 5 079 <br /> 3/12J2002 P 6 31 — 527 176 <50 <O 50 <0 50 <050 <0 50 <2 5 0 98 <br /> W612002 P 724 -620 -093 <50 <0 50 <0 50 <0 50 <0 50 5 B 062 <br /> 912412002 P 902 — 798 1 78 <50 075 <0 50 <0 50 <D 50 <2 5 042 <br /> 1211712D02 P 744 — 640 1 58 <50 <0 50 <0 50 <0 50 <050 <2 0 — <br /> 311812003 P 723 — -619 021 <50 <0 50 <0 50 <0 50 -050 <2 5 1 58 <br /> 611712003 P 745 — -641 -022 <50 <0 50 <0 50 <0 50 <0 50 <2 5 0 00 <br /> 912412003 a P 919 -- -815 1 74 <25 000 <250 380 <250 <250 <250 0 31 <br /> 1211 af2D03 a 58 — 754 061 — — — — — -- — <br /> 31i 612004 P 645 — 541 2U <50 <0 50 <0 50 <050 <0 50 <0 50 — <br /> 612212004 844 — 7.40 225 — — — — — — — <br /> Notes <br /> it=feet TPHg=Total petroleum hydrocarbons as gasoline <br /> MSL=mean sea level MtBE=Methyl tert butyl ether <br /> TOC=top of casing DO=Dissolved oxygen <br /> ugn=Micrograms per liter OCTS=Tnp Blank <br /> mg4=milligrams per liter <br /> PMP=purgedfnot purged <br /> <=below given laboratory detecbon limit <br /> —=not measured or analyzed(in rase of product th;ckness none found) <br /> "=groundwater elevation corrected by adding 0 75 X product thickness <br /> =Chromatogram Pattern Gasoline c6-cl0 <br /> Hydrocarbon pattern is present in the requested fuel quantitation range but does not resemble the pattern of Ore requested fuel <br /> a=sample was analyzed using EPA Method 8260 <br /> b=Laboratory reports that this sample may be biased high due to carryover from the previous sample <br /> I lProjectslARCO721331TableslgwtaWes2133 As 56 of 56 J <br />