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 City of Solana Beach
Section 2
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Project Description
Table 2-3
Cost of Sand Replenishment Strategy with Retention Structures
(in Millions of Year 2002 Dollars) (Continued)
Cost for
Cost for First Second 50- 100-Year
Replenishment with Various Retention Structure Options
50-Years
Years
Total
$35.3
$22.6
$57.9
Beach Replenishment plus Groin Field
$37.7
$23.4
$61.1
Beach Replenishment plus Breakwater
$74.2
$35.5
$109.7
Beach Replenishment with Reef Complex
Notes:
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 with properly designed structures assumed
at 50% initial replenishment cost every 10 years. Costs and frequency are based on SANDAG's Regional Beach Sand Retention
Strategy Report, October, 2001.
2
Assumes six groins at 930 feet in length and spaced 1,500 feet apart. Costs were based on present $ values as estimated in
SANDAG's Regional Beach Sand Retention Strategy Report, October, 2001.
3
Assumes each breakwater will measure 1,000 feet in length and retain 3,000 feet of beach area (alongshore dimension). Two
breakwaters would be required to protect the Solana Beach shoreline (except for the northern 1000 feet due to environmental
concerns). Costs were based on present values as estimated in SANDAG's Regional Beach Sand Retention Strategy Report,
October 2001.
4
Assumes 6 reefs, each measuring 900' in length along the Solana Beach shoreline (except for the northern 1000' due to
environmental concerns). Costs were based on present values as estimated in SANDAG's Regional Beach Sand Replenishment
Strategy Report, October 2001.
General: Maintenance costs for retention structures are in 2002 dollars estimated at 20% of the initial construction cost over a 25-yr
period incurred at year 25, 50, & 75. Construction costs include 15% contingency, 8% engineering, design, & permitting, and 10%
construction engineering and management.
Source: AMEC
Additional funding sources for sand replenishment and sand retention devices would be
necessary. Funding for future sand replenishment projects and retention devices has not been
identified to date. Funding for sand replenishment and sand replenishment structures could
come from multiple sources including, but not limited to, city, state, federal, and private sources
as follows:
Local, State, and Federal Grants
Local or State Tax Allocations for Sand Replenishment and Retention Structures
California Coastal Commission Sand Mitigation Fees
Establish a Fair-Share Beach and Shoreline Maintenance District in Solana Beach
City of Solana Beach Capital Improvements Funds
2.4 Planned Coastal Retreat Policy Alternative
2.4.1 Characteristics
This alternative would evaluate the feasibility of implementing a planned coastal retreat policy
within the City. Planned coastal retreat entails allowing the seacliffs to naturally erode from
Project No. 323530000
Page 2-29
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