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~att~~Q~t arty ~~',~ociatc,;f <br />• CONSULTING GEOTECHNICAL ENGINEERS AND MATERIAL 7ESTII:G <br />May lU, 1984 <br />Bruce Flo:quist <br />17697 U. S. Highway 550 <br />Montrose, CO 81401 <br />Project Vumber: MP40:.' ~: L•' <br />ubject: Coal Mine Disposal Site <br />Silt, Colorado <br />The field study wa:, conducted on May 8, 1984. ~ _ field <br />study consisted of advancing four (4) test borings, nine (9) <br />to twenty-ninp''T'29~ feet deep, in the vicinity o` the disposal <br />-~. ,, <br />_ , <br />:;it~•. Threc•;3) *'est borings were 1-orated near the tug of <br />ti <br />• the proposed slope of the disposal pile .,nd one (1) test <br />boring was located at about the geometric center of t)se <br />proposed disposal area. The approximate test h~rinq locatiun.~. <br />are shown on Figure 1. The logs of the soils encountcr:c:d <br />in the test borings are prec~_nteu on Figures 2 through 6- <br />Excavation was accomplished using a truck mounted coi.~inuous <br />flight power auger. <br />7'}re borings were logged by a representative from our <br />office, and "drive sleeve" uamples of the in situ soils were <br />obtained using a modified California barrel sampler. [sulk <br />disturbed samples of the natural soils and the proposed spoil <br />material were obtairieu. The samples were returned to our <br />lal,o+-,.tory Eor testing. <br />• The laboratory study has been initial 3. The laboratory <br />P. O. BOX 3986 P. O. BOX 0045 270 SAWYER <br />GRAND JUNCTION, CO 81502 MONTROSE, CO 81402 DURANGO, CO 81307 <br />(303) 245-6506 (303) 248-2154 (303) 259-5095 <br />