Laserfiche WebLink
`;orriso:,-_nudsen C. 1 anv, Tnc. <br /> October 1977 <br /> Pate two <br /> shIppea by truck to our Palo Alta l bOr2.tOry on Au' LSt 24, 1977 . '.r SrS. <br /> b,aztaC aryya and Gould of ' I, visited our laboratory on Sept&mber 2, 11977, <br /> to ^Ser—e the quality of Several of the sc'i_pieS and t0 d1SC 1SS t. c l "ra- <br /> tory testing reGuir,_7,ents. <br /> Sa.ides for the laboratory testing pre,-_-am were recovered from nine drill <br /> holes and .o dozer tr`nclies located ip and around the du^p area. T;-,e <br /> death of each drill Hole and the S�j :, e r ri j _` ,=_-z ..ere detailed In <br /> intero`fice co r _, a`-ce _ _ .r "r. , ld to .'r. -atta ar} a a_ed <br /> July 28, 1977. A copy of this corr_espondence is presented in Appendix 2 <br /> to this report. ftsically, two types of drilling and sampling were <br /> carried out during the field investigation: (1) hollow-stem auger <br /> drilling, with samples obtained using either a 2.875-inch-diameter <br /> Shelby tube which was hydraulically pushed or a 2.42-inch-diameter Dames <br /> & Moore ring sampler which was mechanically driven; and (2) large- <br /> diameter air rotary drilling, with samples obtained using a 6.4-inch- <br /> diameter Dennison sampler. Samples obtained using method (2) were con- <br /> fined by 10-gauge sheet metal which had been fitted into the Dennison <br /> sampler prior to the sampling operation. Recovered sample lengths for <br /> these "stovepipe" samples varied from 4.5 inches to 21.5 inches. After <br /> the 6.4-inch-diameter samples of coal refuse had been extruded, we con- <br /> cluded that the majority of these samples were disturbed; therefore, <br /> the laboratory testing program for the coal refuse material was con- <br /> centrated on determining the engineering properties of laboratory- <br /> fabricated samples. <br /> TEST RESULTS <br /> A. Coal Refuse Material <br /> The coal refuse materials classify as well-graded, silty gravel (GM) in <br /> accordance with the Unified Soil Classification System. Bulk samples <br /> & ASSOCIATES <br />