Specifications

Section 5 Formulation of Alternative Plans
EAA Storage Reservoirs Revised Draft PIR and EIS February 2006
5-29
costs (because of varying land area requirements, i.e., alternative “footprints”,
and time required for land acquisition), varying material and operational costs,
and varying interest during construction (IDC) costs. Construction, real estate,
IDC, total investment, present worth, and average annual equivalent costs for
the EAA alternatives are presented in Table 5-10.
TABLE 5-10: CALCULATION OF COSTS USED IN COST-EFFECTIVENESS
ANALYSIS ($1000).
COST
Component
Alternative 2 Alternative 3 Alternative 4 Alternative 5 Alternative 6
Lands $329,739 $115,313 $80,134
$80,134
$67,426
Construction $768,149 $745,061 $832,419
$835,977
$880,848
Total First Cost $1,097,888 $860,374 $912,553
$916,111
$948,274
IDC
Construction
$71,281 $69,138 $77,244
$77,575
$81,738
IDC Real
Estate
$67,972 $23,771 $16,519
$16,519
$13,899
Total
Investment
$1,237,141 $953,283 $1,006,316 $1,010,205 $1,043,911
Annual
Equivalent
$60,534 $51,548 $60,136 $60,369 $62,383
O&M (annual) $2,665 $2,287 $2,409 $2,286 $2,322
Total Average
Annual Cost
$63,199 $53,835 $62,545 $62,655 $64,705
5.3.12.2 Earthwork Cost Estimates
The earthwork cost estimates for levees, canals, berms, swales, and other
general earthwork, used standard construction techniques and standard
equipment. The cost estimates for this work relied on equipment manufacturers’
data. The haul distances for trucking operations were approximations based on
general assumption about the location of borrow areas. The cost estimates relied
on data provided by designers for quantity estimates of cut and fill, suitable and
unsuitable material, rock and overburden, and swell and compaction factors.
5.3.12.3 Pump Plant Cost Estimates
Pump plant cost estimates were produced by incorporating data provided by
designers relating to pump capacity, number of pumps, concrete quantity,