1995-03-17_GENERAL DOCUMENTS - M1973021

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• 'NALEY&ALDRICH COREBORINGREPORT BORING NO. CH-CR4 PAGE 3 OF 5 INCORPORATED PREPARED BY: P. Ganse/A.L. Howard Depth Drill Core Recovery in Rate No. ROD FIELD CLASSIFICATIONAND REMARKS Feet Min Per Die_p Ft. % Foot RoVe 7 45.7 Moderately hard to very hard, fresh to moderately weathered, pinkish, greenish gray, fine grained slightly altered GRANITE GNEISS very close,rough,planar and irregular 7 joints,oriented nearly horizonal to 30°, some very steep nearly vertical joints,joint surfaces typically moderately weathered, 1 - 2" seams of quartz and feldspar through- CIO 4.9 100 0.5' out,very fractured quartz,broken down into gravel size pieces; biotite-rich and more 7 (100%) schistose from 46.0 to 46.3 ft. 7 7 so 7 5a6 50.6 Very hard to hard,fresh to slightly weathered, gray and pink fine grained GRANITE 7 GNEISS,very close to close,rough planar joints dipping 300 parallel to foliation,some chlorite coating on joint surfaces, some surfaces slightly weathered 7 Cl1 4.2 100 1.9 (43%) 7 7 5 5 54.8 Same as above except medium grained 7 7 C12 3.3 100 1.5' (45%) 7 5&1 7 Same as above,very fractured from approximately 61.0 to 62.9 ft 7 60 7 C13 4.8 100 17 7 (35%) 7 62.9 Very hard to hard,slightly weathered,gray,fine grained GRANITE GNEISS;very close,rough planar joints,dipping nearly horizontal to 45',some nearly vertical joint surfaces typically coated with iron staining; highly fractured run 65 C14 3.9 100 0' (0%) 66.8 66•8 Same as above C15 4.9 100 2.5' (51%) 70.0 ------------------------ 70 (71.7) FIELD HARDNESS BEDDING DISCONTINUITIES WEATHERING V.HARD-KNIFE CANT SCRATCH V.THIN < 2" V.CLOSE < 2" FRESH MODSEVERE HARD-SCRATCHES DIFFICULT THIN 2" - 12" CLOSE 2" - 12" V.SLIGHT SEVERE MOD.HARD-SCRATCHES EASILY MEDIUM 12" - 36" MOD.CLOSE 12" - 36" SLIGHT V.SEVERE SOFT-GROOVES THICK 36" - 120" WIDE 36" - 120" MODERATE COMPLETE V.SOFT-CARVES V.THICK > 120" V.WIDE > 120" BORINGNO. CH-CR4