2004-02-24_REVISION - M1977153 (4)

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Geotechnical Data Technical Memorandum Hazeltine -Road Runners Rest II Gravel Pit Lining Projec[ December 2000 4.4.2 Phase One Testing Index tests, consisting of sieve analyses and Atterberg Limits, were performed on selected samples from the two overburden stockpiles, tailings pond, and bedrock at the Hazeltine Pit and on samples from the overburden stockpile and tailings pond at the Howe-Haller Pit. Test results are provided in Appendix E and summarized in Table 4.7. TABLE 4.7 Summary of Laboratory Index Test Results on Potential Borrow Materials Grain Size Analysis Atterberg Standard Proctor Limits Sample Test Pit Depth Dry Opt. USCS Visual Loeatlon Identifleation (ft) Gravel Sand Fines Liq. Plastic Density Moisture Class. DescrlpUon (•b) (H.) (X) Limit Index (pet) (Y.) TP-1 2 5.9 32.1 62.0 42 27 CL Sandy Clay Hazeltine South TP-2 5.5 30.6 35.1 34.3 33 17 SC Clayey Stockpile Gravelly Sand TP-3 11.5 6.7 33.9 59.4 40 23 CL Sandy Clay TPA 2.5 4.6 30.5 64.9 37 10 ML Sandy Silt Hazeltine West TP-6 4 2.0 28.0 70.0 41 23 CL Sandy Clay Stockpile TP-7 4 5.0 49.0 46.0 29 6 SM Silty Sand Hazeltine TT-3 4.5-6.0 0.0 1.3 98.7 52 30 95.7 15.1 CH Claystone Bedrock Hazeltine HZTP-1 Surface 0.4 45.3 54.3 NP NP ML Fine Sandy Tailings Silt Pond Howe-Haller HWTP-1 Surface 0.0 86.8 13.2 NP NP SM Silty Fne Tailings Sand Pond HSP-1 Surface 6.0 45.6 48.4 NW's NPR" SM Clayey Sand How~Haller Overburden HSP-2 Surface 6.7 52.2 41.1 NP~'~ NP~'~ 115.9 13.5 SM Clayey Sand I Stockpile HSP-3 Surface 6.9 51.6 41.5 28 7 SC Cla a Sand I I'~ Results of laboratory tests may not be correct. Laboratory data is not consistent with visual descriptions, observed field conditions, and subsequent Phase Two testing. 98'_13\geo ~m.pa ~ GEI Consultants, Inc. 4-7