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- I PACIFIC COAST DRILLING LIC. 46267$1 <br /> `6035 SELLERS AVE. <br /> 4 p <br /> OAKLEY, CA: 94561 f <br /> 510 625-7660 11 <br /> 510 625-7666 fax <br /> TO: RAY BORGES, MIKE HUGGINS 11-07-94 <br /> FROM: CURT BIRO, PCD <br /> RE: Variance- from 100' seal . - <br /> _ <br /> Sirs, <br /> We are currently <br /> drilling out- in Tracy for the new Materials <br /> Transfer Fac litT' located on MacArthur Blvd. This facility is <br /> located approximatley 40, down in an excavated gravelPit. <br /> have <br /> The bid specifications called for a minimum of 254 gp ravel <br /> drilled dowrljto 310' and have faundnuassg <br /> anitaryseal <br /> formations as indicated below.--- Werequest <br /> variance from 100' to 70, to accomodate their bid specifications . <br /> 0-20 large rocks/soils <br /> 20.40 clay/gravel <br /> 1�12�7 <br /> clay0 clay/streaks' of gravel <br /> 70-85 gravel <br /> 85-90 clay <br /> 90-105 gravel <br /> 105-140 clay/small streaks of gravel <br /> 140-150 clay aks of gravel <br /> 150-182 clay/small stre <br /> --- 182-290 clay rock <br /> 290-295 clay/dark grey <br /> 295-310 clay <br /> Thank You <br /> Y <br /> CURT BIRO, PCD <br />