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Barr Engineering Company
<br />4700 West 77th Street
<br />LOG OF BORING SB-06-04
<br />BARR Minneapolis, MN 55435-4803
<br />~ Sheet 2 of 2
<br />Project: Monument Dam Location: Paonia, CO client: Mountain Coal Company
<br /> Barr Project Number: 06/26-067 STANDARD PENETRATION NATURAL DRY
<br /> m TEST DATA DENSITY
<br />w y c ~ ~ \ N in blowsRt °O (pcf) 11r
<br />o t MATERIAL DESCRIPTION ~ a >o io zo so ao ios ~~s izs
<br /> ~ Z ~
<br /> (ASTM D2488) a
<br />m
<br />y 0 ?~ ~ a SHEAR STRENGTH, ksf Water Content, °~
<br />w ~ ~ (n Q, X UC ~ TV 31E WP Wry W~
<br /> e
<br /> ~ VS ~ VSR O ~-
<br />-~
<br /> 30 1 2 3 4 20 40 60
<br /> medium dense
<br /> Mixture of: 1. POORLY GRADED SAND (SP), with silt, gray, 22 ° 22
<br /> saturated 2. LEAN CLAY (CL), trace to with fine- to
<br />7275 medium-grained sand, trace fine-grained gravel,
<br /> 7274.5
<br />/
<br />id
<br />ti
<br />SI /
<br /> gray
<br />ox
<br />a
<br />on, saturated 3.
<br />LTY SAND (SM), sand fine- to 32
<br />5
<br /> .
<br />medium-grained, reddish brown, saturated
<br />
<br />14 ~
<br /> A few fine- to medium rained gravel pieces in split spoon
<br /> 35 7272.0
<br /> POORLY GRADED SAND (SP), with sift, sand fine-grained, 35.0 ::.::::
<br /> trace fine- to medium-grained gravel (sandstone), 96 » 96
<br /> gray/tan/oxidation, saturated, very dense; sample tends to
<br />7270 split longitudinally 7269.5 :::
<br /> SILTY SAND (SM), no clay to with clay, sand fine-grained, 37.5 .: .;• : X
<br /> trace fine- to coarse-grained gravel (sandstone), 20
<br /> gray/orange, some darfc brown nodules, saturated, medium
<br />
<br />40 dense 7267.0
<br />'W ~ : ~.
<br /> V piezometer installed at depth of 38.0 feet using the 40
<br />0
<br /> .
<br />full -routed method PZ-06-08 serial # 86613 19
<br /> CLAYEY SILT (ML), with fine-grained sand, trace 19
<br />7265 coarse-grained sand, grayftan/orange, some dark brown I
<br /> nodules saturated medium dense 7264.5 I X
<br /> SILTY SAND (SM), no Gay to with clay, sand fine-grained, 42.5 : .; ::
<br />25
<br />51
<br /> trace fine- to coarse-grained gravel (sandstone)
<br />7263
<br />3 :: ~ ~}1
<br /> ,
<br />.
<br />gray/orange, some dark brown nodules, saturated, medium 43.7 18 T
<br /> dense I
<br /> 45 FAT C
<br /> LAY (CH), trace coarse-grained sand, trace fine- to
<br /> medium-grained gravel (shale), grayish browNdark 8
<br /> gray/some oxidation, saturated, very stiff; mixed with sandy 18 °
<br />7260 silt, trace medium- to coarse-grained gravel (sandstone), \
<br /> grayttan/oxidation from 46.5-47.0', mixed with silty fine- to
<br /> medium-grained sand, grayttaNoxidation, from 48.5~t9.5' \
<br /> 32 ° 32
<br /> 50 7257.0
<br /> LEAN CLAY (CL), with fine- to medium-grained sand, trace 50.0
<br /> fine-grained gravel, tan, saturated, soft 100 >, 100
<br />7255 7254.5
<br /> LEAN CLAY (CL), trace coarse-grained sand, trace fine- to 52.5
<br /> medium-grained gravel (shale), grayish browNdark 40
<br /> gray/some oxidation, saturated, very stiff; mixed with silty
<br />
<br />55 fine-grained sand, gray/taNoxidation, from 54.0-56.5'
<br />
<br /> 'VW piezometer installed at depth of 56.0 feet using the 7250.5 100 » 100
<br /> full -routed method PZ-06-09 serial # 86617 56.5
<br /> End of boring at 56.5 feet, refusal
<br /> 60
<br />Completion Depth: 56.5 Remarks:
<br />Date Boring Started: 7/9/06
<br />Date Boring Completed: 7/10/06
<br />Logged By: JDG SAMPLE TYPES WATER LEVELS
<br />Drilling Contractor: DA Smith
<br />D
<br />illi
<br />M
<br />th
<br />d
<br />HSA
<br />m Auger Cutting 'Shelby Tube ~ While Drilling: 12.5
<br />-
<br />r
<br />ng
<br />e
<br />o
<br />:
<br />
<br />® Split Spoon ~ Rock Core End of Drilling:
<br /> hrs After Drilling:
<br />fhe stratification lines represent approximate boundaries. The transition may be gradual.
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