REP35589

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 4/14/1997
• Doc Name: EVALUATION OF UPPER & LOWER TAILINGS PONDS AT BULLDOG MINE
• Media Type: D
• Archive: No

•
Table 4.1 Summary of Geotechnical Laboratory Tests
SAa1PLE INFORhIAT1ON SOIL CLASSIFICATION SATURATION STATE CONSOLIDATION TEST RESULTS \'errical
Test Depth Sample % LiquiJ Plasticity Dry hloismre SpeciDc Degree of Preconos0lidalion Compression CoeRcienr of Hytlraulic
ltole Inlenal Type Passing Limit Inde[ Classificmion Density Content Gravity Samntion Pressure Index ConsoliJration Contluclivity
300 Sieve (%) (%) (21 IPCQ (%) of SoliJs (%) (psp C, C, (ft./y r.) K, (cm/s)

LP-I
14.5-16.5
S.T.
b8 8
---
-- -.. fi0 fi 51 2.81 76
--- -- --- --
LP-I J?-J4 S.T. 97 5 - - -- 90.2 ?9A 7.92 84 --- -- --- ---
LP-? 9.5-I I.S S.T. 87.1 NP(I) NP (I) ML 86.? 166 2.96 43 890 0074 -- ---
I.P-3 14.3-170 Ac.T. 99.9 83.2 43.4 ?79 104 3.gx10'r (3)
LP-2 29.5-31.5 S.T. 99.6 39.8 19.3 CL 80.4 44.1 30? 99 2200 043 -- ---
3.8x10 ~ (3)
I.P-7 713-23.5 S.T. 99.8 40.1 20.3 CL 76.1 47 3.01 101 1200 0.44 b.6X10° 4.3x10'r (4)
UP-I 14-16 S.T. 99.4 22.2 0.7 h1L 764 30.7 3.1 102 2200 0.7 5.0X10° 2.6x10~r (4)

UP-7
9.3-I1.3
Ac.T.
99.9
-- --- 72.7 52.4 J.IJ 97
--- -- --- ---
Notes:
(1) NP -Indicates non-plastic foes.
(2) Tailings samples were classdied using the United Soil Classdiwtion System in accordance with ASTM D2487
(3) Intliwles vertical hytlrauln: contluclivily values measuretl in flexible walled triaxial cells using a Row pump. Confining stresses were chosen b match in-situ stresses as closely as possible.
(4) Indictes vertical hytlraul¢ conductivity values wlwlaled from consolidation lest results. For UP-1, 14'to 18', the geometric mean of the hydraulic mntludrvity values from the 1600 psf and 3200 psf loadings
was taken as the best estimate under the in-situ sbess conditions. For LP-3, 21.5' l0 23.5', the 1600 psf loading prowtles the best match with in-situ stress contlilions and was usetl in Ne celculalion of contlucli
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