2022-09-26_PERMIT FILE - M2022042 ‎(23)‎

• Permit No: M2022042
• IBM Index Class Name: Permit File
• Doc Date: 9/26/2022
• Doc Name Note: Stability Analysis Tech Memo
• Doc Name: Application
• From: Julie M. Mikulas -Martin Marietta Materials, Inc
• To: DRMS
• Email Name: PSH
• Email Name: JLE
• Media Type: D
• Archive: No

Slope Stability and Setback Exhibit – Windsor East Mine September 21, 2022
TETRA TECH 4
Table 2. Factors of Safety and Setback for proposed reclamation slope
Location Factor of Safety
(Static)
Setback (ft)
(Static)
Factor of Safety
(Pseudostatic)
Setback (ft)
(Pseudostatic) Object Measured From
Section 1 1.8 8 1.4 10 Edge of ROW
Section 2 1.7 8 1.3 9 Edge of ROW
Section 3 1.8 7 1.4 9 Future Crossroads Blvd ROW
Section 4 2.0 7 1.5 10 Future Crossroads Blvd ROW
Section 5 2.0 5 1.6 9 Future Crossroads Blvd ROW
Section 6 1.8 8 1.4 9 Future Crossroads Blvd ROW
Section 7 (SW) 2.0 6 1.5 7 Pipeline Easement
Section 7 (NE) 1.9 7 1.5 8 Pipeline Easement
Section 8 1.9 8 1.5 8 Edge of ROW
Section 9 2.2 6 1.7 9 Edge of ROW
Section 10 2.3 6 1.7 7 Cache la Poudre River
Section 11 2.0 7 1.5 8 Cache la Poudre River
Section 12 (SW) 2.4 6 1.9 7 Water Pipeline
Section 12 (NE) 2.5 4 1.9 7 Water Pipeline

Table 3. Factors of Safety and Setback for proposed mine slope
Location Factor of Safety
(Static)
Setback (ft)
(Static)
Factor of Safety
(Pseudostatic)
Setback (ft)
(Pseudostatic)
Object Measured
From
Section 1 1.5 37 1.3 48 Edge of ROW
Section 2 1.5 34 1.3 46 Edge of ROW
Section 3 1.5 28 1.3 36 Future Crossroads Blvd ROW
Section 4 1.5 26 1.3 30 Future Crossroads Blvd ROW
Section 5 1.5 25 1.3 29 Future Crossroads Blvd ROW
Section 6 1.5 35 1.3 46 Future Crossroads Blvd ROW
Section 7 (SW) 1.5 27 1.3 34 Pipeline Easement
Section 7 (NE) 1.5 24 1.3 3 Pipeline Easement
Section 8 1.5 30 1.3 37 Edge of ROW
Section 9 1.5 25 1.3 29 Edge of ROW
Section 10 1.5 21 1.3 20 Cache la Poudre River
Section 11 1.5 27 1.3 33 Cache la Poudre River
Section 12 (SW) 1.5 17 1.3 17 Water Pipeline
Section 12 (NE) 1.5 17 1.3 18 Water Pipeline