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<br /> Historical Groundwater Analytical Data(Revised)
<br /> Parkinson's Arco
<br /> 3250 West Hammer Lane
<br /> Stockton,California
<br /> Top of
<br /> Casing Depth to Groundwater TPH as Ethyl-
<br /> Sample Date Elevation Water Elevation Gasoline Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME TBA
<br /> Identification Sampled (MSL) (feet bgs) (MSL) (ug/1) (ug/1) (ug/1) (ugll) (ug/1) (ug/1) (ug/1) (ug/1) (ug/0 (ug/1)
<br /> MW-1 09/21/00 430 1296 -866 25,700 1,820 503 1,450 582 28,300 <2 0 2 92 108 3,710
<br /> 01/19/01 1290 -860 2,250 178 10 155 244 34,200 <2 0 260 215 3,910
<br /> 04/23/01 11 94 -764 19,000 1,780 208 1,480 1600 39,500 <100 <10 0 285 4,780
<br /> 07/27/01 13 12 -882 13,000 1,700 98 1,100 730 40,000 <200 <200 290 <20,000
<br /> 11/01/01 14 12 -982 14,000 1,100 20 980 470 24,000 <20 <20 190 2,400
<br /> 01/28/02 1261 -831 8,700 1,100 <50 1,000 320 18,000 <250 <250 <250 <2,500
<br /> 04/23/02 1270 -840 4,900 1,000 <3 0 940 210 17,000 <250 <250 <250 <2,500
<br /> 07/29/02 5 25 13 70 -845 10,000 850 270 1,000 860 7,400 <5 0 <5 0 79 1,600
<br /> MW-2 09/21/00 4 74 13 23 -849 52 9 <0 5 <0 5 <0 5 <0 5 5,830 <2 0 <2 0 45 1,150
<br /> 01/19/01 13 23 -849 <500 <5 0 <5 0 <5 0 <5 0 21,600 <2 0 <2 0 168 2,520
<br /> 04/23/01 1227 -7 53 <500 <5 0 <5 0 <5 0 <5 0 10,400 <2 0 <2 0 675 697
<br /> 07/27/01 1345 -871 190 <0 5 2 0 4 1 29 4,800 <100 <100 <100 <10,000
<br /> 11/01/01 1445 -971 <50 <0 5 <0 5 <0 5 1 8 3,100 <1 0 <1 0 21 <100
<br /> 01/28/02 1293 -8 19 <50 <0 5 <0 5 <0 5 <0 5 3,300 <100 <100 <100 <1,000
<br /> 04/23/02 1302 -828 <50 <0 3 <0 3 <0 3 <0 6 3,700 <5 0 <5 0 30 65,000
<br /> 07/29/02 5 65 1402 -8 37 <50 <0 3 <0 3 <0 3 <0 6 4,000 <5 0 <5 0 34 61
<br /> MW-3 09/21/00 3 76 1234 -858 5,900 413 243 562 468 346 <2 0 <2 0 2 08 <200
<br /> 01/19/01 1230 -854 1,870 182 5 82 12 9 23 I 682 <2 0 <2 0 443 <200
<br /> 04/23/01 1134 -758 1,160 6 3 <5 0 105 184 683 <2 0 <2 0 4 23 <200
<br /> 07/27/01 1249 -872 870 2 1 16 9 0 17 360 <20 <20 <20 <2 000
<br /> 11/01/01 13 52 -976 760 3 5 <0 5 5 8 9 2 600 <1 0 <1 0 4 6 <100
<br /> 01/28/02 1200 -824 560 5 9 087 4 6 4 5 590 <0 5 <0 5 3 8 <5 0
<br /> 04/23/02 1209 -833 220 0 91 <0 3 3 4 4 4 540 <5 0 <5 0 <5 0 1,800
<br /> 07/29/02 467 13 02 -835 170 039 039 14 3 0 300 <5 0 <5 0 10 <50
<br /> MW-4 07/29/02 4 80 1328 -8 48 <50 1 1 <0 3 <0 3 <0 6 14,000 <5 0 8 8 160 <50
<br /> MW-5 07/29/02 5 13 13 61 -848 <50 <0 3 0 9 <0 3 12 18,000 <25 <25 150 5,700
<br /> ug/1 Micrograms per liter DIPE Dusopropyl ether ETBE Ethyl-t-butyl ether
<br /> MSL Mean sea level TPFI Total petroleum hydrocarbons TAME Tert-amyl methyl ether
<br /> bgb Below ground surface MtBE Methyl ted-but)I ether TBA Ter(-butyl alcohol
<br /> b K�
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