Biomedical Engineering Reference
In-Depth Information
Table 11.3. (continued)
Cost Element
EISB Cost ($)
Operation and Maintenance (per one event)
Amendment re-addition (per event)
25,000
Reports
2,500
Average annual O&M (average for 5 year)
5,500
Annual Monitoring Costs (for first 5 years)
Annual monitoring labor
5,000
Annual analytical, groundwater
7,000
Annual monitoring reports
10,000
Total monitoring (per year)
22,000
Annual Monitoring Costs (for second 5 years)
Annual monitoring labor
2,500
Annual analytical, groundwater
3,500
Annual monitoring reports
5,000
Total monitoring (per year)
11,000
Table 11.4. EISB Cost Summary for Case 1
Cost Element
EISB Cost
Total design costs
$80,000
Total capital costs without bioaugmentation
$65,500
Design and capital cost for bioaugmentation
$11,000
NPV of total O&M costs (assumed for 5 years)
$25,000
NPV of total monitoring costs (assumed 10 years)
$144,000
NPV of total cost (5 year O&M and 10 year
monitoring)
$323,000
Bioaugmentation costs as a percentage of NPV
total cost
3.4%
quite small (only about 8% of the total cost). The cost to include bioaugmentation as part of the
implementation adds only 3.4% to the total cost of the remedy.
11.5.4.2 Cost for Case 2: Shallow Barrier
The cost breakdown for Case 2 is presented in Table
11.5
. A summary of the costs is
presented in Table
11.6
.
In the case of the biobarrier, the higher O&M costs are due to the need for amendment
additions every 3 years to provide a continuing supply of food for the dechlorinating bacteria.
Reamendment costs are evenly distributed between material costs (primarily EVO) and
labor cost associated with the injection process. Monitoring costs still constitute about 45% of
the total cost for this remedy reflecting the high cost of long-term monitoring. The cost to
include bioaugmentation as part of the implementation adds 1.8% to the total cost of the remedy.
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