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Table 4 <br /> Historical Groundwater Analytical Results <br /> Results in Micrograms per Liter'ug/L or ppb) <br /> Time Oil Company-Property 04-049 <br /> 14000 East Highway 88 <br /> Lockeford California <br /> WELL DATE <br /> ID SAMPLED BENZENE TOLUENE ETHYLBENZENE XYLENES TPHg MtBE <br /> (ug/L (ug/L u 1L u !L (ug/L uL 1 <br /> MW-1 01/19/95 200 1100 160 620 5200 _ <br /> 05/24/95 440 1900 280 1100 9200 --- <br /> 10/04/95 500 2400 300 1400 8200 --- <br /> 12/19/95 290 850 120 560 3400 <br /> 02/28/96 600 2900 440 1900 10000 <br /> 05/23/96 410 1890 283 1340 9320 <br /> 07/19/96 1130 4110 482 2710 13600 _ <br /> 12/19/96 1500 5230 742 3590 21000 <br /> 02/26/97 280 320 685 458 2740 N0<50 <br /> 04/16/97 1160 6410 852 4460 25200 57 <br /> 07/14/97 1470 11300 1800 8960 55200 ND<1000 <br /> 10/13/97 921 5410 1400 5820 35500 ND<1000 <br /> 01/27/98 304 1410 1020 ND<10 6570 ND<100 <br /> 04/28/98 2200 12500 2200 10300 60400 ND<2000 <br /> 08/13/98 380 2500 1130 2480 15700 ND<200 <br /> 10/26/98 386 2580 1080 2820 18500 ND<200 <br /> 01/27/99 ND<334 2670 1170 3570 ND<30000 ND<3340 <br /> 04/26/99 97 96 216 163 2780 ND<5 0 <br /> 07/14/99 162 262 618 699 6700 ND<5 0 <br /> 11/24/99 ND<2 0 24 425 654 6320 ND<50 <br /> 02117/00 NS NS NS NS NS NS <br /> 06/01/00 NS NS NS NS NS NS <br /> 08/18/00 NS NS NS NS NS NS <br /> lie 11104!00 NS NS NS NS NS NS <br /> 01/11/01 129 3860 2510 17000 85100 ND<250 <br /> 04/27101 NS NS NS NS NS NS <br /> 08120/01 NS NS NS NS NS NS <br /> 11128101 NS NS NS NS NS NS <br /> 03/04102 ND<1000 570 1300 13000 220000 ND<50 <br /> 05/16102 ND<5 0 52 28 250 1700 ND<5 0" <br /> 07/25102 NS NS NS NS NS NS <br /> 11/12/02 19 ND<5 0 47 2040 20000 ND<5 0 <br /> 01/16/03 21 NO<0 5 38 107 3200 15 <br /> 05/15/03 12 ND<0 5 43 128 4300 ND<0 5 <br /> 07/24/03 09 ND<0 5 29 12 1000 05 <br /> 10/20/03 NS NS NS NS NS NS <br /> 01/05/04 NS NS NS NS NS NS <br /> 04/01/04 NS NS NS NS NS NS <br /> 07/23/04 26 ND<0 5 ND<0 5 ND<1 0 1100 06 <br /> 10/04/048 ND<0 5 ND<0 5 ND<0 5 ND<1 5 470 08 <br /> NOTES <br /> uglL=micrograms per Liter <br /> ppb=parts per billion <br /> TPHg=Total Petroleum Hydrocarbons as gasoline <br /> WEE=Methyl tent Butyl Ether by Method 8020 through 4126199 by 8260 thereafter <br /> ND=Not Detected at or above the reported detection limits <br /> NS=Not Sampled <br /> MCL s=Maximum Contaminant Levels for California drinking water reported by the California Department of Health Services <br /> Title 22 California Code of Regulations as of September 12 2003 <br /> '=Elevated reporting levels are due to high concentration of non-target analytes requiring sample dilution <br /> 1) Monitoring well MW-5 went dry during purge on 05/16/02 and did not recharge <br /> 2) Well was reportedly dry dunng gauging on 10/20/03 115104 and 411104 <br /> 3) Water levels dropped 0 35 within monitoring well MW-10 following Initial gauging of site wells The well was not sampled on 10/20/03 due to <br /> an Insufficient amount of water in the well <br /> 4) Grab sample <br /> 5) Insufficient amount of water to sample well <br /> 6) Sample chromatogram does not match the standard gasoline chromatogram <br /> I(Time OIRLockefordlTables\SCM&Asmt Tbls xis Page 1 of 10 <br />