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<br /> TABLE 1
<br /> GROUNDWATER ELEVATION AND ANALYTICAL SUMMARY
<br /> i
<br /> FORMER APACHE PLASTICS FACILITY
<br /> 2050 EAST FREMONT STREET
<br /> SIGCKTON,QALIFORNIA.
<br /> Depth to Well Groundwater Ethyl- Total
<br /> Date Water Elevation Elevation TPHG Benzene Toluene benzene Xylenes MTBE
<br /> WELL# Sampled (ft bgs) (ft msl) (ft msl) (µg/L) (µg/L) (Ag/L) (µg/1,) (µg L) (µms,)
<br /> MW-8 D 05/18/01 4297 1789 -2508 26,000 3,200 2,200 870 1,890 <10*
<br /> 11/05/01 48 13 -3024 58,000 6,800 6,000 1,700 6,500 <25*
<br /> 02/14/02 4649 -2860 2,200 800 23 99 7 9 <2 5*
<br /> 05/20/02 4660 -2871 1,100 160 6 2 24 86 <1 0*
<br /> 08/27/02 5009 -3220 25,000 5,000 1,200 1,200 3,300 <50*
<br /> 12/05/02 50 18 -3229 490 84 <0 50 13 <0 50 <0 50
<br /> 02/05/03 5003 -32 14 2,600 490 25 110 161 <2 5*
<br /> 05/28/03 NM Well Covered by Vehicle-Not Sampled
<br /> 08/11/03 5051 -32 62 <50 <0 50 <0 50 <0 50 <0 50 <0 50
<br /> 11/10/03 51 11 -3322 200 <1 0* <1 0* <1 0* <1 0* <1 0*
<br /> 02/23/04 4942 -3153 430 48 15 14 l 8 <0 50
<br /> 05/24/04 49 11 -3122 4,700 950 150 150 675 <5 0*
<br /> 08/23/04 5280 -3491 5,600 1,300 45 240 52 <5 0*
<br /> 11/19/04 5269 -3479 4,200 910 73 220 354 <5 0*
<br /> MW-9 D 05/18/01 4328 1827 -2501 210,000 20,000 44,000 3,100 17,500 <200*
<br /> 11/05/01 4842 -30 15 210,000 22,000 47,000 3,200 18,900 <250*
<br /> 02/14/02 4678 -2851 160,000 21,000 52,000 2,000 14,500 <250*
<br /> 05/20/02 4688 -2861 160,000 20,000 35,000 2,700 17,900 <250*
<br /> 08/27/02 5035 -3208 160,000 21,000 43,000 3,200 18,900 450*
<br /> 12/05/02 5035 -3208 180,000 25,000 56,000 3,500 20,100 400*
<br /> 02/05/03 5131 -3304 190,000 20,000 38,000 3,100 17,700 <250*
<br /> 05/28/03 4809 -2982 2,200 140 480 25 300 <2 5*
<br /> 08/11/03 5072 -3245 5,200 610 1,500 69 550 <5 0*
<br /> 11/10/03 5134 -3307 19,000 2,600 5,300 280 1,640 <20*
<br /> 02/23/04 4933 -3106 53,000 500 8,700 1,800 12,800 <50*
<br /> 05/24/04 4930 -31 03 130,000 1,100 23,000 4,300 37,000 <100*
<br /> 08/23/04 5305 -3478 8,100 770 1,500 180 640 <10*
<br /> 11/19/04 5298 -3471 2,500 330 440 85 360 <2 5*
<br /> Apache_Quarterly_Data Page 5 of 8 STI AMS
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