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,, .,--_ ... gi7.�m �- -._rr� � r' r» srs -'.i_r F _.x._ J--. r, "r1 Y.:,1,.yXl1: w+�--�' e Y.-Dias`- :�_�.aais; ..v,.-� r1. -.�^ r'-5• •Mv :r�`�'l 1'f... <br /> .�„ <br /> ,�4L-h..r'.,;;. <br /> 1 <br /> a <br /> r <br /> r � <br /> DISCUSSIC)•j OF 1_MORAT('AR)' RL"SULTS <br /> 1'otlowing are tables sunmariiinl, test results from both of the <br /> two groups run. The first series f r:xn t-XC-,vat ion 11 ! , sampled <br /> 1 /31 / 1989, is 1;i ven in Tab l e A. The second group, 1 rnrxt Excava- <br /> tion 1/ 2, sampled 7/ 10/30, is given in Table <br /> TAM-F A <br /> Sample No. p3TEX (rm,,);.F) TEPH (mg,/kg) <br /> Tank I N N.D. 025 N.D. I0 <br /> Tank I S N.D. 025 N.D. 10 <br /> I{ 3 N.D. . 025 87 <br /> TABLE 13 <br /> p3 N.D. .025 N.D. 10 <br /> N.D. .025 490 <br /> N ;3cnzcnc . 84 <br /> N.L . 10 <br /> 5 N.D. 025 N.D. 1D <br /> W N.D. 025 N.D. 10 <br /> All samples iron, the first excavation show'e'd no contamination at <br /> detwcIabIc limits , except for Sample no. 3 in the 2 feet deep <br /> trench at the edge of the railroad track (Figs. 3 & 9 ) . <br /> No contarnination was found in either test at the battnm of the <br /> tank ex[avatiOn. Chss indicates that the lank had not leaked <br /> prior to removal . If the tank had leaked, it should have been <br /> revealed in the excavatson hottom tests . Also, if product had <br /> leaked and penetrated to the water table, it mould have been <br /> brought to 11-le bottori of ttre exr`avation by the water which en- <br /> tered the excavation at night . The negative tests at tank bottom <br /> also Show that all of the spill that occurred at tank removal <br /> was cleaned up. <br /> Samples locations for the tests shown on Table r3 are shown on <br /> Figures 4 and 9 and in Appendix A- 10. <br /> The four sidwalls of l-xcavation no. 2 were sapiplcd about 5 or 6 <br /> feet from the surface. The slight benzine measurement of . 84 rrrg/ <br /> kg at Sample N -as taken very near Sample no. 3 frorrl the i , st <br /> series of tests; that is, at the NF side of the railroad track. <br /> t <br /> The bottom saranfe of this excavation also showed no cloin- <br /> ation (Sample C) . A TLPH reading of 99(1 n,1;/kg was found aat lo <br /> tion E, also near the railroad tracks- <br /> please note that the buildings and railroad tracks do not line <br /> up in either a north-south or east-west direction. <br /> f <br /> b <br /> 5 <br />