2006-12-12_REPORT - M1974004

• Permit No: M1974004
• IBM Index Class Name: REPORT
• Doc Date: 12/12/2006
• Doc Name: 2006 Geotechnical Report
• From: Lafarge North America
• To: DRMS
• Email Name: ACS
• Media Type: D
• Archive: No

for use in this year's analysis. These poles are summarized in Figure 8 and are
presented in further detail in Table 2 below.
Table 2: Representative Discontinuitv Orientations
Dip Direction/Dip
1997-
Concen- 2002 & 2003 2003 2005 2006 Entire
tration 2004 Main Pit Southern Surface Surface Dataset
Center Surface Borehole Expansion Mapping Mapping (2,960
Mapping Data Data Data Data points)
Data
F-1 (Fol) 176°/36° 168°/38° 177°/35° - 157°/39° 159°/35°
F-2 (Fol) - - 258°/17° (1) 209°/160 198°/24° -
F-3 (Fol) - - - 336°/44° 2940/36° -
P-1 (Joint) 174°/81 ° 178°/74° 171 °/75° 172°/76° 165°/72° 171 °/76°
P-2 (Joint) 089°/72° 082°/63° 095°/55° 104°/61 ° 102°/47° 0870/63°
P-3 (Joint) 257°/73° 256°/66° 248°/53° 255°/61° 257°/79° 2510/68°
P-4 (Joint) 293°/72° 294°/70° 316°/41 ° 308°/76° - 2870/70°
P-5 (Joint) 334°/86° 349°/62° 343°/73° - 336°/76° 3450/62°
P-6 (Joint) 028°/68° 037°/57° 031 °/55° 039°/58° 029°/49° 0280/53°
(1) Orientati on of foliation found in the upper 300 feet of boring DH-03-03
2 The orientations in bold were used as representative for this stud
Note the overall adjustments shown in Table 2 that have been made to the
general orientations for each of the discontinuity (foliation and joint) sets based
on the combined discontinuity data obtained over multiple years' analyses.
' Overall, the discontinuity sets obtained by analysis of the entire dataset (i.e.,
2,960 points) are consistent with the cluster analysis from previous years'
' individual analyses, with the exception of foliation orientations, F-2 and F-3
(Figure 9). Both of these two discontinuity orientations are identifiable within the
quarry, but have not been recorded in large enough quantities to create a strong
signature in the analysis of the entire dataset. However, based on the
prevalence of these discontinuities in the southern expansion area, both of these
orientations have also been used in this analysis.
A further analysis of the available cluster data was used to assess the
' hypothesis that distinct "structural blocks" exist within the quarry, a cluster
analysis showing the poles based on collection areas has been developed
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