2007-08-10_PERMIT FILE - C1980007 (4)

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Barr Engineering Company 4700 West 77th street LOG OF BORING SB-06-05 BARB Minneapolis, MN 55435-4803 ~ Sheet 2 of 3 Project: Monument Dam Location: Paonia, CO client: Mountain Coal Company Barr Project Number: 06/26-067 ~ STANDARD PENETRATION NATURAL DRY a~ TEST DATA DENSITY w ~ o ~ ~ \ N in blows/ft O (pef) is "~ MATERIAL DESCRIPTION ~ a > o fo 20 so ao tos tts fzs c w a ~ z ~ (ASTM D2488) ` y ~ ` d a o SHEAR STRENGTH, ksf Water Content, w ~ E ~ Qp X UCi 0 TV ~ VVP WN Wl 9 ~ VS ~ VSR O r ~ ~ 2 3 a 20 ao so 30 coarse-grained gravel, reddish brown, saturated, medium 30.0 1 33 dense 9 LEAN CLAY (CL), trace medium- to coarse-grained sand, g ~ trace to with fine-grained gravel, gray/brown, saturated, 7302.5 ~ ~ medium to stiff, sandstone piece (coarse-grained gravel size) 32.5 ::~.: :: ~ ~ POORLY GRADED SAND (SP), trace silt, sand fine-grained, 46 ~~O tan, saturated, dense ~ ~ 7300.0 ~.:~~~.'~ ~ 7300 35 LEAN CLAY (CL), with fine-grained sand, trace medium- to 35.0 ~ coarse-grained sand, gray, saturated, stiff; looks like pick-up, g o O no real recovery 4.9 •WV piezometer installed at depth of 36.6 feet using the 7297'5 I I full -routed method PZ-O6-10 serial # 86614 37 5 . LEAN CLAY (CL), with fine- to medium-grained sand, trace 9 coarse-grained sand, trace fine-grained gravel, gray/brown, 7296.1 9 150 saturated stiff looks like ick-u 38.9 .::::::~.:: ~ POORLY GRADED SAND (SP), with Gay, with silt, sand 7295.0 :::. ~~ 7295 40 fine-grained, trace medium- to coarse-grained sand, trace 40.0 ~ 1 29 fine-to medium- rained ravel tan saturated loose 6 , ` LEAN CLAY (CL), trace fine- to coarse-grained sand, trace ( 2 .6 fine- to medium-grained gravel (gray shale), gray, saturated, 7292 5 ' ' ~ X medium tan from 41.5-42.0 looks like ick-u 42 5 SANDY SILT (ML), sand fine-grained, gray/oxidation, 12 saturated, medium dense 12 ~° 2 .4 7290.0 . ~ I 7290 45 SILTY SAND (SM), sand fine- to medium-grained, trace fine- 45.0 ~:• .: :: to medium rained ravel tan saturated loose 7289.0 : ~ : : ~. 11 11 0 Mixture of: 1. LEAN CLAY (CL), trace coarse-grained sand, 46.0 :' :. :: 4.1 brown/grayftan/oxidation, saturated 2. SILTY SAND (SM), I sand fine-grained,brown/gray/taNoxidation, saturated 11 11 0 ' 8 ._: ~ 7285.0 . .: :.~ 7285 50 LEAN CLAY (CL), trace fine- to medium-grained sand, 50.0 ~ 3 stiff; trace small roots 7284.0 saturated ra /black/tan/oxidation 8 g , , y and wood feces 51.0 18 0 ~ 2 .5 SILTY CLAY (CL), trace fine-grained sand, black, saturated, I soft; slightly organic odor I •VW piezometer installed at depth of 51.6 feet using the I fully-grouted method (PZ-06-11, serial # 86615) I I 7280.0 7280 55 SILTY CLAY (CL), with fine- to coarse-grained sand, with 55.0 fine- to coarse-grained gravel, gray, saturated, very stiff; 20 20 mixed with some silty fine-grained sand ~ 7277.5 ~ LEAN CLAY (CL), trace fine- to coarse-grained sand, 57.5 ~ gray/orange/dark brown, saturated, hard; mixed with some gg o 6 silty fine-grained sand 7275.0 7275 60 on roue ex a e Completion Depth: 77.0 Remarks: Date Boring Started: 7/5/06 Date Borin Com leted: 7/5/06 g p Logged By: JDG SAMPLE TYPES WATER LEVELS Drilling Contractor: DA Smith D illi M th HSA m Auger Cutting ,Shelby Tube SZ While Drilling: 23.8 r ng e od: End of Drilling: ® Split Spoon ~ Rock Core hrs After Drilling: The stratification lines represent approximate boundaries. The transition may be gradual.