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r- <br /> J <br /> Mr. Robert 0. Godwin -2- 31 December 19£37 <br /> source and extent of the TCE contamination must be investigated. In addition, <br /> the permeability of the cover at Pit 6 needs to be determined; the work plan <br /> refers to the cover as "relatively impermeable" but no documentation is pro- <br /> vided. Therefore, the work plan must be changed to include such a TCE investi- <br /> gation, the piezometer installation recommended above, and a determination of <br /> cover permeability. <br /> It „l(m have r,,n (!11 '$�,lOn , l Fr >'E call Ilf= v <br /> 11 f {�'16j 361-5676. <br /> WENQY L., COHEN <br /> Pr_oject..Engine.er <br /> 1dLUmm <br /> cnr i�Js«re <br /> U6v i <br /> �1lr'('1 TIOVl� Ul _r! 1�eY'ke : V <br /> . it tlC3� _ ..� _if1E•y Lr3.. i1 � <br /> z�vl�i�� _ _ � -_7 .._. ��, ., 41I�� r1 <br /> i �:�t - t,01"j/, Lltisl""lii, <br /> 1` r. f rea ti i i i:ill, Lav rE:ncF i've'rrnD 1,1 0t d i LFiL) rc O1"'y, Livermore <br />^+r <br />