| Tweet |
Custom Search
|
|
|
||
 City of Solana Beach
Section 2
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Project Description
Table 2-2
Cost of Sand Replenishment Strategy without Retention Structures
Cost of Sand Replenishment Strategy
(in Millions of Year 2002 Dollars)
Cost for Second 50-
Replenishment Only
Cost for First 50-Years
100-Year Total
Years
Cost of Initial Replenishment1
$7.2
0
$7.2
Cost of Subsequent
$64.8
$72.0
$136.8
Replenishment2
$72.0
$72.0
$144.0
TOTAL
1
Assumes an initial construction cost of $8 per cubic yard for sand including 15% contingency, 8% engineering, design and
permitting, and 10% construction engineering & management. Assumes a beach width of 200 feet and length of 1.5 miles (northern
0.2 miles of beach not included for environmental concerns). Subsequent replenishment assumed at 100% of initial replenishment
cost every 5 years. Costs and frequency of replenishment are based on SANDAG's Regional Beach Sand Retention Strategy
Report, October, 2001.
2
Source: AMEC
Subsequent replenishments occur every 5 years.
Table 2-3
Cost of Sand Replenishment Strategy with Retention Structures
(in Millions of Year 2002 Dollars)
Cost for
Cost for First Second 50- 100-Year
Replenishment with Various Retention Structure Options
50-Years
Years
Total
Beach Replenishment1
Initial Replenishment
$7.2
0
$7.2
Subsequent Replenishment
$14.4
$18.0
$32.4
Subtotal
$21.6
$18.0
$39.6
Retention Structure Options:
-Groin Field (6 Groins)2
Initial Construction
$11.4
$0.0
$11.4
Maintenance
$2.3
$4.6
$6.9
Subtotal
$13.7
$4.6
$18.3
-Breakwater3
Initial Construction
$13.4
$0.0
$13.4
Maintenance
$2.7
$5.4
$8.1
Subtotal
$16.1
$5.4
$21.5
-Reef Complex (6 Reefs)4
Initial Construction
$43.8
$0.0
$43.8
Maintenance
$8.8
$17.5
$26.3
Subtotal
$52.6
$17.5
$70.1
Project No. 323530000
Page 2-28
|
 
|
|
|
||
