PERMFILE70593

• Permit No: C1992080A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: APPENDIX 5-7 BONDING CALCULATIONS
• Media Type: D
• Archive: Yes

• II-4 Rough Grade North Pit Calculation
1987 D9L
To: Rough Grade North end of pit. Estimate of 25,000 LCY material at north
pit to rough grade.
Push distance 200 feet
700 LCY/Hour production
So: 25,000 LCY _ 700 LCY/Hour = 35.7 Hour
Use 40 Hours at $141/Hour
COST: 40 Hours at $141/Hour = 5640
II-5 Smooth Grade All of Pit
14G Grader
To: Smooth grade all of pit and reduced highwalls. Estimate area at IS acres total.
Use 14' blade - 2nd gear = 3.3 mph
3.3 mph = 17,424 Fph
So: 17,424 Fph x 14' blade = 243,936 ftz/Hour at 50% effective use - 121,968 ftZ/Hour
Then: 15 acres = 653,400 ft2
• time =653,400 ft2 - 12],968 feet/Hour = 5.36 Hours
Use 10 Hours at $75/Hour
COST: 10 Hours at $75/Hour = 75
1[-6 Topsoil Calculation
637E PP
To: Topsoil 15 Acres at 1.0 feet deep needs 24,200 LCY topsoil.
Cycle Time
Load & Dump
Cycle
- 1.6 Minute
- 4.0 Minim
TOTAL 5.6 Minute
Then: 5.6 Minutes to Cycle for 31 LCY
So: 24,200 LCY _ 31 LCY = 780.6 Loads
Use 800 Loads. 800 Loads at 5.6 min/load yields 448.0 minutes
or 74.6 Hours. Use 80 Hours at $247/Hour
• COST: 80 Hours at $247/Hour = 19 760
,SAN 1 5 1393