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' TABLE 4 <br /> ANALYTICAL RESULTS OF WATER SAMPLES <br /> HVOC's and Lead <br /> Geweke Land Development & Marketing <br /> (.LS) <br /> Compound/ EW- MW- MW- MW- MW- MW- MW- MW- MW- MW- <br /> Sample Date 1 6 7 8 9 10 11 12 13 14 <br />' 1,2-Dichloroethane <br /> 9-27-93 25 ND ND NA NA ND ND ND 12 1 36 <br />' 12-27-93 33 ND ND NA NA ND ND ND 14 93 <br /> 3-28-94 1 22 ND ND 5.1 70 ND ND ND 3.3 7.0 <br /> 'Lead <br />' 9-27-93 ND ND ND NA NA ND ND ND ND ND <br /> 12-27-93 0.012 0.012 0.013 NA NA 0.008 0.011 0.011 0.01.3 0.012 <br /> 3-28-94 ND ND ND ND ND ND ND 0.021 0.008 0.023 <br />' EDB <br /> 9-27-93 ND ND ND ND ND ND ND ND ND 2.7 <br /> 12-27-93 ND ND ND ND ND ND ND ND ND 1.1 <br />' 3-28-94 ND ND ND ND ND ND ND I ND ND ND <br /> µg1L =parts per billion(ppb) ND =Not Detected <br /> Results in m&A(parts per million,ppm) NA Not Analyzed <br /> u <br /> The fluctuations in petroleum hydrocarbon contamination show no apparent pattern. Of the <br /> wells that showed an increase in contamination from the December 1993 sampling, MW-6 <br /> is up-gradient from the soil contamination plume and MW-7, MW-11 and MW-12 are down- <br /> gradient. EW-1 is located within the southern edge of the soil plume. MW-7 showed the <br />' smallest increase of TPH concentration (210 ppb to 220 ppb) and, EW-1 showed the <br /> greatest increase, from 810 ppb to 5,400 ppb. <br />' MW-14, which indicated an decrease in petroleum hydrocarbon contamination, is located <br /> within the soil contamination plume and has decreased consistently since each was initially <br /> sampled in September 1993 and May 1991, respectively. MW-10 is located slightly up- <br /> gradient and west of the contaminated soil plume and has been contaminated intermittently <br /> since initially sampled in May 1991. <br />' 5.3 Volatile Halocarbon Contamination <br /> 1,2-Dichloroethane(1,2-DCA)was detected in samples from MW-8,MW-9,MW-13, MW-14 <br />' and EW-1. The concentrations of 1,2-DCA have decreased from the previous quarter in <br /> MW-13, MW-14 and EW-1. Samples from MW-8 and MW-9 were last collected in April of <br /> 1993, by Sun-Tech Environmental. No HVOC's were reported in MW-8 or MW-9 during <br /> the April monitoring. <br /> G-e1�-I l.d�s<.j.M I.. <br /> 15 <br /> 131/4-KOLDAt QR3 <br />