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_ f <br /> �r}J �A. 3U„ .�r^ ✓'''..y" .�„ .�� <br /> x���x.;t'o� tr r .��� C� '��iT' � �� !th s�'}i�r F�r'�N�a ,, yr y� t •F'r �' r ;�1 �s,.n;:,ar`ea; <br />/{{ n( /� ,l' Y� jury -.,[":�-ttyr � �'�, y, :.esti }�fy, fro-•.,. <br /> p j`. {�Al'J 1 "k r�{r �q,�4'.. '"�r s ""�' ��'t��L �.::('?,f°l�W:%J6'r�lyi��'�'...�..w•�..."'3w.Y{:¢;;yr, „S.r.iif�J� "7�y�" ]LSA <br /> a <br /> Y <br /> l <br /> CONCLUS im'S REGARDINC, Tr ST l2FSI-11 <br /> E-rom these data it appears that the tank never lea - onerof l�ctht <br /> morn l and that all spilled rnateridl was recovered- <br /> ue! lines from the tanamin;ted reactakoc_, III(. formjof alsouth- <br /> and i f i t Gild , the C°' <br /> east plume between the railroad tracks and the Marc ause. <br /> Ail altcrrnzstc explanation could be that of cProb,iblysurface <br /> cotrmorsryover <br /> r the railroad tracks . Suc4) spill were p Per piCture <br /> alont ort . The uDl <br /> the years in an industrial area suds the p11 0 <br /> in Figure 7edltoubscquentzrcc to bathacxcaavations . Heavvs,ndiesel <br /> ritiel <br /> that happen - <br /> iciures <br /> that equipment can be srrcn I the baCkp,round of hot I> <br /> LIS j <br /> in Figure 7. <br /> At this time there is evidence Of groundurater contamination. <br /> no <br /> [,}one of the sarnplcs from the bottom of either exca�'ation sho.vccl <br /> any contamination. na <br /> ni <br /> However , <br /> the limits of tile <br /> oltybr_onadc. lncatcd!"andtionlshOkin tJte <br /> the samples above have <br /> Contaminated soil probably has not been <br /> rcrnoved. <br /> RE COh4�iE i`DAT S ON <br /> in diameter , Yo a <br /> I , Bore s hand auger Stoles , about <br /> ry^ depth of <br /> f leer as shown on Figure 9. If a hand au};cr tvi 11 not do tl7e <br /> job, use an auger hole drilling truck. A hand aLWer is sue- <br /> gested bec.tusc of the hole depth and in order to reduce <br /> COSTS . <br /> Collect samples by driving; a 7_" x <br /> 2. 1 f a hand auger i 5 used, „-1-++ hand lei nto tile. bat torn <br /> 61' brass tube mounted ass a lonf <br /> of holes l'- 1 through P-S. Have a representative from " cer- <br /> f 1,C)I laboratory collect the sarnplcs , usin,, all (QA/(,V, de- <br /> reviously. If a truck mounted atrgcr is used, Toon <br /> scribed p 2 + x G' brass tu5es mounted in a split spoon <br /> an <br /> de <br /> ss <br /> sarnplcs usinf' case, al E s:impl inl; devices are to be <br /> sampler. 1n eitfter Indus- <br /> pler is used, <br /> Cleaned between uses in a three: wash and rinti , TS <br /> trial strength solutio . <br /> hf a 11 od1 the` Tubemto ensure Y )at <br /> take the sarnplcs from 'xi II not contaminate <br /> debris which might tall into the hole <br /> the sample. A renresntative OfaHdrtsarrpIingsprocedur'esllabnd <br /> present to witness the drilling <br /> to lop the sample holes• <br /> 3. Fill the bore holes %%rill) p,rout, <br /> to he svi t les5ed by the lel-Is. <br /> PA <br /> 4 Test Ille Samples <br /> mpl es frOul 5030)P 1 through P-5 for BTEX using E <br /> rrtethod 9020 P <br /> 7 <br /> f <br />