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• <br /> <br />J <br />blrig!a-tic Lauc;hiln Engineers <br />October 22, 1973 <br />Page 3 <br />lr.eh. One test showed a percolation rate of 21:0 minutes per ilnch. Tl,is <br />test ,aas conducted in a silty clay tense, in general, these tests Indicate <br />the percolation rate of the material.ls moderate to fairly low. <br />Ground llate.r [onditi~ns: [later well records for the area indicate that <br />the ground ,;atcr table lies relatively deep belo,a the surface. The ,s ter <br />r.~ell drillt:d adJacent to the site In the race track area has a standing <br />r:a[er level 41 feet belo:v the surface. The location of this well is shown <br />on fig. 1. Other ,•rells r:lthin the vicinity of the disposal site have <br />standing water levels from 60 to 100 feet below the surface of the disposal <br />area. ::o seepage Baas noticed in the erposures of the road cut or river <br />escarpment. 11c believe the ground ,aatcr table drops bet,oeen the well and <br />the fiver. <br />If [here are any questions or if we can he of further service, please <br />let us know. <br />Uery truly yours, <br />~~ <br />yy~fir(.D C, Hfp~ LHEll At:D ASSOY.IATES, ItJ[. <br />' ~ ~P GIS T~~ ~ ~ <br />/ ~ ~ ~~ <br />a~ <br />s <br />N 6 W~ ~ Dy /c. <br />v s Sac? ? ~I ~i~a-~f''1 --(~~. ~r~ <br />Ralph G. Y~ock, Engineering Geologist <br />~ ip v ~ 'i~. <br />~F_ ~'.st ~a._O~F <br />RGI1/bn 1~~'.c ; <br />Encls. ''•~~ <br />Rev. Ry: R.[.il. <br /> <br /> <br /> <br /> <br />i <br />