HomeMy WebLinkAbout4 (2)APPENDIX A
M & T CHICO RANCH MINE
Reclamation Costs .
1) .Regrade pit areas- Side slopes will be left a stable angle per the reclamation plan.
Reclamation will occur yearly for those areas that have been depleted of aggregates.
Approximately 6 acres will be mined each year, which will result in an average of 607
feet of perimeter edge to reclaim each year. The remainder of the mined area will be
underwater. Recontouring of the perimeter will typically be done by D-8 class dozer.
a) Dozer Speed
Forward speed 2.2 miles .per hour: 194 feet per minute.
Return speed 6.0 mile per hour: 528 .feet per minute.
Average dozer width per pass: ' 11 feet
b) Production Calculation
Number of passes required to cover pit area:
One time: 22' divided by 11 = 2 passes
Average pass length = 3,035 feet
Average forward speed: 194 feet/minute
Use 199 feet/minute
Average return speed: 528 feet/minute
Use 528 feet/minute
Change direction: .05 minutes
3035 feet divided by 194 feet/minute = 15.64 minutes forward
3035 divided by 528 = 5.75 minutes return
Use 50 minute hours or .83 efficiency: 15.64 + 5.75 = 21.4 minutes
21.4 divided by .83 = 25.8 per complete pass
Add .05 minutes for change of direction: 25.8 minutes + :05 = 25:85 min
2 passes x 25.85 minutes per pass = 51.7 to cover area one time "
Cover area 3 times to complete grading: 51.7 x 3 = 155.1
155.1 minutes divided by 60 minutes per hour = 2.6 hours
Use 3 hours -
c) Equipment cost
D8 -K Dozer 3 hours x $150/hour = $450.00
Total Equipment cost: $450.00
d) Labor
Dozer Operator — 3 hours x $59.25/hour = $177.75
Total Labor Costs = $177.75
Total Cost to Regrade pit area: $627.75
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2) Topsoil Respreading- If necessary, a one -foot thickness of topsoil will be respread on
recontoured perimeter areas. Topsoil will be direct respread from adjacent areas to be
mined. Typical equipment to be used will be a 623 class tractor scraper and a 12G blade.
a) Production Calculation
Area to be respread = 22 ft x 3035 ft. = 66,770 SF
Volume to be respread = 66,770 SF 1 ft thick/27 = 2,473 CY (use 2,500 CY)
Scraper production = 15 loads per hour 20 CY / load =. 300 CY
Scraper hours = 2500 / 300 = 8.3 (use 9 hours)
Area to blade = 66,770 SF
Blade production = 200, 000 SF per day = 26,000 SF per hour in 7.5 hour day
66,770 / 26,000 = 2.57 hours (use 3 hours)
b) Equipment costs
9 hours x $182.00/hr = $1,638.00 for tractor scraper
3 hours'x $ 56.30/hr = $168.90 for blade
c) Labor costs
Scraper operator 9 hours x $59.25 per hour = $533.25
Blade operator 3 hours x $63.00 per hour = $189.00
TOTAL COST TO RESPREAD TOPSOIL 2 52 5
3) Equipment Removal
Activity to complete task: Dismantle plants, load onto trucks and haul to Chico.
Equipment to be moved: Tanks conveyors, screens, crushers, drier, baghouse
40 truckloads
a) Production Calculations
Dismantle and load out 40 truckloads of plant and plant -related equipment.
1. One 40 -ton truck crane with pickup — 4 days
2. Four Operating Engineers — 10 days
3. 40 loads from M&T to Chico @ 1.5 hours each =.60 hours
4. Pilot cars: 10 loads @ 1.5 hours each = 15 hours
b) . Equipment costs
40 Ton Crane: 32 hours @$175.00/hour = $5,600.00
Pickup: 32 hours @$11.00/hour = $352.00
Lowbed or 40' Highbed 60 hours @ $80.00/hour = $4,800.00
Pilot Car 15 hours @ $50.00/hour = 750.00
TOTAL EQUIPMENT COSTS $ ,S10
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c) Labor
Operating Engineer 320 Hrs. @ $59.25/hr = $18,960.00
TOTAL LABOR $1860 0_
TOTAL TO REMOVE PLANT $�.
4) Regrade Plant Areas
Remove settling pond dikes, spread sediment over adjacent pit area, grade plant area
Scraper (623B) Production
15 loads/hr. @ 20 cy/Load = 300 cy/hr x 7.5 hrs./day = 2,250 cy/day '
Est. quantity of Sediment: 400' x 400' x 3' divided by 27 = 17,778 cy
17, 778 CY divided by 2250 cy/day = 7.9 days (Use 8)
8 days @ 8 hrs/day =.64 hours
Blade (12G) Production
200,000 SF/Day to subgrade to +/- 0.25'
35 Acres x 43,560 SF/Acre = 1,524,600 SF
1,524,600 divided by 200,000 = 7.6 days (Use 8)
7 days @ 8 hrs/day = 56 hours
Item Summary:
623 Scraper: 64 hrs. @ $182.00/hr $11,648.00
14 G Blade: 64 hrs. @ $56.30/hr . _ $3,603.20
Scraper operator 64 hours x $59.25 per hour = $3,792.00
Blade operator 64 hours x $63.00 per hour = $4,032.00
TOTAL TO REGRADE PLANT AREA 23 5.20
5) Reve etation — Approximately .15 acres of perimeter will be revegetated every five years.
Most, if not all this revegetation is expected to occur naturally as a result of volunteer
establishment of species present in the area.. If necessary natural revegetation will be
augmented by planting as described in the Reclamation Plan. These plantings will use
plant materials available on the M&T ranch. Plantings will be supervised and their
establishment monitored by a revegetation specialist. Since plant materials and 'planting
equipment are readily available at the M&T ranch, the only revegetation costs are
expected to be for contracting with a revegetation specialist. For reclamation costs, it is
assumed that the maximum perimeter (3,035 ft.) must be reclaimed..
Annual Supervision of revegetation = 4 days x $960 per day = $3,840
Annual monitoring data collection, analysis and reporting
10 days x $1,700 per day Ulm
TOTAL REVEGETATION COSTS
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TOTAL DIRECT COSTS:
Regrade pit area = $627.75
Topsoil respreading = $2,529.15
Plant and equipment removal = $30,462.00
Regrade plant areas = $23,075.20
Revegetation costs = $20,840.00
TOTAL DIRECT. COSTS
$77,534.10
The following items are taken from Pages A-12, A-13, and A-14 included
in the Surface
Mining and Reclamation Act Financial Assurance Guidelines:
6) Supervision — Taken from Graph 1
6.3% of cost $77;534.10 x .063.= $4,884.65
TOTAL COST OF SUPERVISION
$4,884.65
7) Overhead. and Profit — Taken from Graph 2
14% of cost = $77,534.10 x :14 = $10,854.77
TOTAL COST OF O/H AND PROFIT
$10,854.77
8) Contingencies — Taken from table on Page A-12
04500,000 use 10% $77,534.10 x .10 = $7,753.41
TOTAL COST OF CONTINGENCIES
$7,753.41
9) Mobilization and Permits Lump Sum
$2,500.00 .
.TOTAL RECLAMATION COSTS
$103,526.93
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