| Asarco El Paso Smelter - Cost Estimate Waste
Management [Present Value Calculation] |
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| Sitewide Evaluation - June 2008 |
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| El Paso, Texas |
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Quantities |
units |
Unit Price |
Total |
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| Demolition of Structures [One time] |
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| |
Demolition
of Structures (steel) |
264,141 |
sq. ft. |
$11 |
$2,905,551 |
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Demolition
of Structures (Brick and concrete) |
191,157 |
sq. ft. |
$17.50 |
$3,345,248 |
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Demolition
of Structures (Wood railroad trussels) |
40,025 |
sq. ft. |
$40 |
$1,601,000 |
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Demolition
of Structures (I-10 Bridge and Slag bridge) |
17,625 |
sq. ft. |
$16 |
$282,000 |
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Demolition of two Smokestacks |
|
1 |
Lump Sum |
$750,000
|
$750,000 |
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Subtotal
of demolition of structure |
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$8,883,799 |
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| Groundwater [construction and 50 years operation] |
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Construction
[One time] |
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Slurry Wall (Bentonite soil mix, 3
feet wide) Design and installation |
3,000 |
feet |
$590 |
$1,770,000 |
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Additional Extraction Wells will use
existing wells whenever possible |
50 |
well |
$4,500 |
$225,000 |
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Injection Well (800 foot injection
well for discharge of treated groundwater) |
1 |
well |
$100,000 |
$100,000 |
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Design and Construction of
Groundwater Treatment system |
1 |
system |
$5,000,000 |
$5,000,000 |
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Subtotal of Groundwater construction |
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$7,095,000 |
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Continuous
operation [Present value of 50 years annuity factor of 25.72976] |
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Operation and Maintenance (electrical
and general maintenance) |
25.72976 |
Annual Cost |
$350,000 |
$9,005,416 |
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Guard to protect equipment and GW
system (1 guard $ 25 an hour) |
25.72976 |
Annual Cost |
$213,600 |
$5,495,877 |
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Monitor Well
Plugging and Abandonment [0ne time charge 50 years later, using Presnet Value
factor of 0.22811 ] |
0.22811 |
Lump Sum |
$64,800 |
$14,782 |
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Semi-annual groundwater reports [2
reports per year @ $5000 per report] |
25.72976 |
Annual Cost |
$10,000 |
$257,298 |
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Subtotal of
Groundwater operation |
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$14,773,372 |
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Subtotal of
Groundwater construction and operation |
$21,868,372 |
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| Asphalt Paving to manage exposure [One time] |
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Acreage
left to be paved from May 20, 2005 Corrective Action Directive letter |
16 |
acres |
$130,000 |
$2,080,000 |
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Northern
Section of Smelter |
8 |
acres |
$130,000 |
$975,000 |
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Former
Building and Process footprint |
52 |
acres |
$130,000 |
$6,760,000 |
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Subtotal of apshalt
paving |
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$9,815,000 |
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| Fencing to control access in Northern Section of the
Smelter [One time] |
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2800 |
feet |
$25 |
$68,628 |
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| Engineering Design and Construction of Disposal unit Cell 4
[One time] |
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Engineer
and Construction of Cell 4 for disposal of: |
1 |
Cell |
$4,000,000 |
$4,000,000 |
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Minus 50 Slag waste pile (255,111 cubic yds) |
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Abrasive Blasting
Area (1,111 cubic yds.) |
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Soil underneath Process area ( 20,000
cubic yds Estimated) |
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Category I soils from May 5, 2005
letter (25,000 cubic yds Estimated) |
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Excavation
and Disposal of material in Cell 4 [One time] |
303,000 |
cubic yds. |
$6 |
$1,818,000 |
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Verification
of Waste Excavation of materials to Cell 4 |
100 |
soil samples |
$250 |
$25,000 |
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Completion
Report |
1 |
report |
$5,000 |
$5,000 |
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Subtotal of design and construction of disposal unit
cell 4 |
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$5,848,000 |
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| Long term monitoring of engineering control and groundwater
[Present Valueof 400 years annuity factor of 33.333] |
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Annual
site inspection report is covered under the groundwater report for the first
50 years |
0 |
reports |
$0 |
$0 |
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Monitoring
and Sampling (Management of Waste) 30 wells biannual ($150 per sample) |
33.333 |
Annual Cost |
$9,000 |
$299,997 |
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TCEQ
Oversight |
33.333 |
Annual Cost |
$11,024 |
$367,463 |
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TCEQ
travel (once a year) |
33.333 |
Annual Cost |
$1,000 |
$33,333 |
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Annaul
site inspection report [Present Value of 350 years annuity factor of 33.332] |
|
33.332 |
Annual Cost |
$5,000 |
$166,660 |
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General repairs per
year (Fence and Asphalt Cap) |
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Assume 1% of fence is required repair
[1300 lf x $25 LF] |
33.333 |
Annual Cost |
$32,500 |
$1,083,323 |
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Assume 0.5% of 98 Acres asphalt cover
is required repair [$2.00/sf x 20,000 SF] |
33.333 |
Annual Cost |
$40,000 |
$1,333,320 |
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Subtotal
of long term monitoring |
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$3,284,095 |
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| Contingency for unexpected expense |
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|
0 |
Lump Sum |
$0 |
$0 |
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| SUBTOTAL
FOR WASTE MANAGEMENT |
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$49,767,893 |
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| Other Identified Costs |
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$2,237,293 |
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| TOTAL |
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$52,005,186.00 |
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