Table 1 Total Construction costs based upon allocation of costs
from Tables 4, 8, 9, and 12 below
| Facility Costs from Table 12 | $100.9 MM |
| Construction Employment Table 4 (1) | $256.8 MM |
| Bulldozer and Arctic Vehicle Costs Used for Construction from Tables 8 and 9 | $159.7 MM |
| Total Terrace Network Construction Costs | $517.4 MM |
1. Construction Crew staff: 164 for 1280 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 5 yrs
Repair & Support staff: 132 for 1440 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 5 yrs
Office general staff: 160 for 1920 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 5 yrs
Management & technical staff: 160 for 12mo/yr at $10,000/mo (AECOM rate) *
1.42 (inflation from 2009-2023) * 5 yrs
Table 2 Total Maintenance costs for years 1 thru 4 based on
Allocation of costs from Tables 5, 10, and 11 below
| Maintenance Employment: (2) | $63.0 MM |
| Bulldozer and Arctic Vehicle Costs Used for Maintenance | $28.6 MM |
| Facility maintenance | $6.1 MM |
| Office Supplies, Utilities etc. | $4.0 MM |
| Four-year Total Terrace Network Maintenance Costs (yrs. 1-4) | $101.6 MM |
| Total Average Annual Terrace Network Maint. Costs (yrs. 1–4) | $25.4 MM |
2. Maint. crew staff: 75 for 1280 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 4 yrs
Repair & Support staff: 38 for 1440 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 4 yrs
Office general staff: 45 for 1920 hr/yr at $24/hr (AECOM rate) *
1.42 (inflation from 2009-2023) * 4 yrs
Management & technical staff: 45 for 12mo/yr at $10,000/mo (AECOM rate) *
1.42 (inflation from 2009-2023) * 4 yrs
Table 3 Annual Terrace Network Maintenance Costs
for years 5 through 40
| Maintenance Employment: (3) | $31.4 MM |
| Bulldozer and Arctic Vehicle Costs Used for Maintenance | $14.3 MM |
| Facility Maintenance: 3% per yr. | $3.0 MM |
| Office Supplies, Utilities etc. | $2.0 MM |
| Total Annual Terrace Network Maint. Costs Total (yrs. 5 – 40) | $50.8 MM |
- Maint. crew staff: 150 for 1280 hr/yr at $24/hr (AECOM rate) * 1.42 (inflation from 2009-2023)
Repair & Support staff: 75 for 1440 hr/yr at $24/hr (AECOM rate) * 1.42 (inflation from 2009-2023)
Office general staff: 90 for 1920 hr/yr at $24/hr (AECOM rate) * 1.42 (inflation from 2009-2023)
Management & technical staff: 90 for 12mo/yr at $10,000/mo (AECOM rate) * 1.42 (inflation from 2009-2023)
Table 4 Terrace Network Construction Staffing Profile
| Project Year | Number of Employees in Ice Sheet Construct. Crews (4) | Number of Employees in Construction Equipment Repair Crews and Crew Support Personnel (6) | Total Number of Employees in Constr. Management Office, Technical, & Other (7) | Total Construction Employment |
| 1 | 264 | 132 | 320 | 716 |
| 2 | 264 | 132 | 320 | 716 |
| 3 | 264 | 132 | 320 | 716 |
| 4 | 264 | 132 | 320 | 716 |
| 5 | 264 | 132 | 320 | 716 |
Table 5 Terrace Network Maintenance Staffing Profile
| Project Year | Number of Employees in Ice Sheet Maintenance Crews (5) | Number of Employees in Maintenance Equipment Repair Crews and Crew Support Personnel (6) | Total Number of Employees in Maint. Management, Office, Technical, & Other (7) | Total Maintenance Employment |
| 1 | 30 | 15 | 36 | 81 |
| 2 | 60 | 30 | 72 | 162 |
| 3 | 90 | 45 | 108 | 243 |
| 4 | 120 | 60 | 144 | 324 |
| 5 thru 40 | 150 | 75 | 180 | 405 |
- Three crew members per construction crew working on ice sheet terrace construction. 83 active 3 person crews plus 5 extra crews to account for absences.
- Three crew members per maintenance crew working on ice sheet terrace maintenance plus 10% extra to account for absences.
- Equipment repair crews working primarily at support base and as needed remotely on ice sheet. Support personnel working on cleaning and resupply of crew support vehicles. Also working on service jobs in support of other supply base personnel.
- Complete range of personnel needed to run the Terrace Construction and Maintenance component of the Tasersiaq Lake Hydro Project. This included management, purchasing, engineering, information technology, accounting, security, finance, personnel, etc.
Table 6 Terrace Network Construction Equipment
| Project Year | Cat D7E Tracked Bulldozers in Service (8) | Arctic All Terrain Vehicles in Service (10) | Special transport and retrieval Packages in Service (11) |
| 1 | 88 | 176 | 2 |
| 2 | 88 | 176 | 2 |
| 3 | 88 | 176 | 2 |
| 4 | 88 | 176 | 2 |
| 5 | 88 | 176 | 2 |
Table 7 Terrace Network Maintenance Equipment
| Project Year | Excavators in Ice Sheet Maintenance (9) | Arctic All Terrain Vehicles in Service (10) | Special transport and retrieval Packages in Service (11) |
| 1 | 10 | 21 | 1 |
| 2 | 20 | 42 | 1 |
| 3 | 30 | 63 | 2 |
| 4 | 40 | 84 | 2 |
| 5 thru 50 | 50 | 105 | 2 |
- Used for construction phase. Caterpillar D7E series or equivalent. Includes 10 % spares.
- Used for maintenance of terrace channels. Caterpillar 320 GC Excavator or equivalent. Includes 10 % spares
- Two Arctic All Terrain Vehicles per crew plus 10 % spares, plus 5% for emergency medical services etc. Burlak 4X4 or equivalent
- 2 mobile heavy lift cranes plus Large Arctic Transport Tracked vehicle and sled for each special transport package. Used to retrieve disabled vehicles from ice sheet.
Table 8 Bulldozers Cat D7E used for Construction
Annual costs of Fuels, Parts, Depreciation, Interest
| Fuels 2000 hr./yr. Per D7E Dozer (12) | $65,000 |
| Repair Parts 10%/yr. Per D7E Dozer (13) | $67,500 |
| Depreciation 10%/yr. Per D7E Dozer | $67,500 |
| Interest 7%/yr. Per D7E Dozer | $47,250 |
| Number of D7E Dozers in service | 88 |
| Total Construction D7E Annual Costs | $21.8 MM |
- D7E fuel consumption 25 liters per hour at $1.30 per liter.
- D7E initial cost $675,000.
Table 9 All Terrain Vehicles Burlak 4X4 used for Construction
Annual costs of Fuels, Parts, Depreciation, Interest
| Fuels 500 hr./yr. Per Burlak 4X4 ATV (14) | $3,900 |
| Repair Parts 10%/yr. Per Burlak 4X4 ATV (15) | $20,000 |
| Depreciation 10%/yr. Per Burlak 4X4 ATV | $20,000 |
| Interest 7%/yr. Per Burlak 4X4 ATV | $14,000 |
| Number of Burlak 4X4 ATV in service for construction crews | 176 |
| Total Construction Burlak 4X4 ATV Annual Costs | $10.2 MM |
- Burlak 4X4 fuel consumption 6 liters per hour at $1.30 per liter.
- Burlak 4X4 initial cost $200,000.
Table 10 Excavators Cat 320GC used for Maintenance
Annual costs of Fuels, Parts, Depreciation, Interest
| Fuels 2000 hr./yr. Per Cat 320GC Excavator (16) | $41,600 |
| Repair Parts 10%/yr. Per Cat 320GC Excavator (17) | $45,300 |
| Depreciation 10%/yr. Per Cat 320GC Excavator | $45,300 |
| Interest 7%/yr. Per Cat 320GC Excavator D7E | $31,710 |
| Number of Cat 320GC Excavator in service | 50 |
| Total Maintenance Cat 320GC Excavator Annual Costs | $8.2 MM |
- 320GC fuel consumption 16 liters per hour at $1.30 per liter.
- 320GC initial cost $453,000.
Table 11 All-Terrain Vehicles Burlak 4X4 used for Maintenance
Annual costs of Fuels, Parts, Depreciation, Interest
| Fuels 500 hr./yr. Per Burlak 4X4 ATV (18) | $3,900 |
| Repair Parts 10%/yr. Per Burlak 4X4 ATV (19) | $20,000 |
| Depreciation 10%/yr. Per Burlak 4X4 ATV | $20,000 |
| Interest 7%/yr. Per Burlak 4X4 ATV | $14,000 |
| Number of Burlak 4X4 ATV in service for maintenance crews | 105 |
| Total Maintenance Burlak 4X4 ATV Annual Costs | $6.1 MM |
- Burlak 4X4 fuel consumption 6 liters per hour at $1.30 per liter.
- Burlak 4X4 initial cost $200,000.
Table 12 Terrace Network Facilities Cost of Construction
at Kangerlussuaq.
| Equipment winter storage building $700 per m^2 * 12,500 m^2 | $8.8 MM |
| Maintenance and repair building $1050 per m^2 * 5,250 m^2 | $5.5 MM |
| Arctic All Terrain Vehicle Resupply Facility $1100 per m^2 * 18,000 m^2 | $19.8 MM |
| Offices for Terrace Component of Hydro Project $1600 per m^2 * 5,250m^2 (15 m^2 per office employee) | $8.4 MM |
| Furnishing, office equipment, tools, food service, & cleaning equipment $ 20,000 per base employee * 1000 base employees | $20.0 MM |
| Crew Quarters for ice sheet crews $1600 per m^2 * 400 crew members * 60 m^2 per member | $38.4 MM |
| Total Facility Construction Costs | $100.9 MM |
Tasersiaq Lake Greenland Hydroelectric Project Concept 