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HALEY&ALDRICH <br /> INCORPORATED <br /> CORE BORING REPORT Boring No. CH-CR4 <br /> PROJECT: Morrison Quarry Central Quarry Reservoir Job No. 20200-000 <br /> CLIENT: Cooley Gravel Company PageNo. 1 of 5 <br /> CONTRACTOR:Golden Drilling,Inc. Location:N 7039.5,El2037.6 <br /> EQUIPMENT USED: Trailer Mounted Dresser Industries Model 25 Elevation: 6558.5 <br /> COREBARREL ORIENTATION Date Start:7/11/94 <br /> Date Finish:.7/15/94 <br /> TYPE ire ine <br /> El Vertical Q Inclined Driller. B. Matthews <br /> ID 1.875" Bearing Prepared By: A. Howard <br /> El Horizontal P.Ganse <br /> Angle From Vertical <br /> Depth Drill. Core Recovery FIELD CLASSIFICATION AND REMARKS <br /> in Rate No. RQD <br /> Feet Min Per D—e—pfi <br /> Foot Range <br /> NOTE: Drilled with tricone bit down to 4.2 ft. <br /> 4 2 Very hard to hard, slightly weathered,light gray and pink,medium grained garnetif- <br /> erous GRANITE GNEISS;very close to close,rough planar joints parallel to <br /> 5 10 foliation(approximately 30°);joint surfaces generally iron stained, some quartz <br /> Cl 4.5 100 0.9' infilling; some healed, steeply dipping fractures; top 1 ft highly fractured <br /> 10 (20%) <br /> 10 <br /> 10 8.7 <br /> 87 8.7- 12.0 ft: Same as above,except fresh to slightly weathered,no iron staining on <br /> 7 joint surfaces <br /> 10 <br /> 7 C2. 4.8 100 2.1' <br /> (44%) <br /> 7 12.0 <br /> 7 Very hard to hard,fresh to slightly weathered,pink and green,fine grained GAR- <br /> NET HORNFELS;very close to close,rough planar joints,no infilling,dipping 30- <br /> 7 13.5 40°parallel to foliation and opposite to foliation;calcite healed and coated joints <br /> 13.5 13.5 <br /> 7 <br /> 15 C3 4.8 100 3.0' Very hard to hard,fresh, gray, greenish-gray and pink,fine to medium grained <br /> 7 (63%) GRANITE GNEISS;very close to close,rough planar joints shallow to moderately <br /> dipping(up to 300)parallel to foliation,iron staining,zone of high potassium <br /> 7 feldspar content at approximately 17.3 ft <br /> 7 19.0 _______________ <br /> 18.3 —— — <br /> 7 1 .3 ery hard to hard, slightly to moderately weathered gray and red, medium-grained <br /> altered garnetiferous GRANITE GNEISS;very close to close rough,planar joints <br /> 8 C4 3.4 100 1.5' with chlorite coating and iron staining on surfaces; dipping from very shallow <br /> 20 21 44% to 20 - 30°,some very steeply dipping joints are almost vertical <br /> FIELD HARDNESS BEDDING DISCONTINUITIES WEATHERING <br /> V.HARD-KNIFE CANT SCRATCH V.THIN < 2" V.CLOSE < 2" FRESH MODSEVERE <br /> HARD-SCRATCHES DIFFICULT THIN 2" - 12" CLOSE 7' - 12" V.SLIGHT SEVERE <br /> MOD.HARD-SCRATCHES EASILY MEDIUM 12" - 36" MOD.CLOSE 12" - 36" SLIGHT V.SEVERE <br /> SOFT-GROOVES THICK 36' - 120" WIDE 36' - 120" MODERATE COMPLETE <br /> V.SOFT-CARVES V.THICK > 120" V.WIDE > 120" BORINGNO. CH-CR4 <br />