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G Ground <br />E Engineering <br />C Consultants, Jnc. <br />October 25, 1991 <br />265 S. Harlan <br />Dem~er, CO 80226 <br />(303) 235-0707 • <br />P.O. Boz ii09 i0 <br />S:ear..boat Springs, CO 507 i7 <br />(303) 5'9.5596 <br />lob Name: Construction Observation and <br />R4aterials Testing, Pond at <br />Seneca 11-1V Hine, (Dam <br />Construction) <br />Job Number: 91-5~0 <br />Peabody Coal Company <br />Drawer D <br />Hayden, CO 81639 <br />Attn: A4r. Chuck McCullough <br />As requested, we ~~siled the project site on tlvs date to perform density tests on the material being placed for the dam for <br />Pond 009. The test results and locations are shown below. The test results indicate that the material tested is in general <br />accordance with project requirements. <br /> • <br />Test Field Results l.abora(ory Results <br />\'n, LOCatlon Dent17 Dn~Density S, Moisture So Compaction ?1DDlncfl `%~0?1C Soil T~-~e <br />5 Dam, CL d'pRG 105.3 155 97 ]08.2 15.5 Sandy Silt <br />6 Dam, 20'Left of CL 5'BRG 104.7 15.7 97 ]08.2 155 Sandy Silt <br />Compaction Requirements: f`linimum 9590 of Standard Proctor Density ~/-2 <br />of Optimum Moisture Content. <br />Hal Sclilicht <br />Field Representative <br />Re~ieu•ed by Arthur J. Greengard Jr., P.£. <br />u <br />