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 City of Solana Beach
Section 2
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Project Description
Table 2-1
Estimated Construction and Maintenance Costs for Shoreline and Bluff Protection
Devices
Estimated 10-Year
Shoreline and Bluff
Estimated Construction
Maintenance Cost
Protection Device
Cost (per foot of length)
(per foot of length)
Cantilever seawalls1
$1,500
$50-$100
Shotcrete walls2
$600
$30-$50
Bluff tie-back retaining walls
$2,500-$3,000
$30-$50
Plugs and fills
$600
$30-$50
Revetments3
$1,500
$20
Cobble berms4
$1,000
$200
Source: AMEC 2001.
Notes:
1
Assumes a 45-foot-long pier length.
2
Assumes a wall height to elevation 15 feet MLLW.
3
Assumes a 15-foot-wide revetment with a 1.5:1 slope face, top elevation at 15 feet MLLW.
4
Assumes a 20-foot-wide berm with top elevation of 15 feet MLLW.
2.2 Repeal of the Shoreline and Coastal Bluff Protection Ordinance Alternative
2.2.1 Characteristics
This alternative would relinquish sole responsibility and approval of all shoreline protection
devices to the California Coastal Commission, which was the original permit authority and is still
the final authority for such protection devices. The California Coastal Act requires the California
Coastal Commission to issue "coastal development permits" (CDPs) for construction of
shoreline protection structures necessary "to protect existing structures" that are "in danger from
erosion," provided that the proposed protective structure will be "designed to eliminate or
mitigate adverse impacts on local shoreline sand supply." (Pub. Resources Code, 30235.) .
Since the adoption of the Shoreline and Coastal Bluff Protection Ordinance in 1994, the City has
added its own more proactive permit requirement to supplement the regulatory scheme put in
place by the Coastal Act. However, as noted earlier, approval of a project by the City is not
enough to allow a property owner to build a structure in the absence of a parallel and
complementary approval from the California Coastal Commission. Therefore, under this
alternative in which the City's existing shoreline and coastal bluff protection ordinance is
repealed, approval of shoreline protection would proceed directly to the California Coastal
Commission, without the review and authority of the City. From a practical standpoint, the
California Coastal Commission essentially cannot deny shoreline protection permits for the
protection of public and private properties when the proposed design will mitigate impact to the
shoreline sand supply (which, to date, has been satisfied through the imposition of a "sand
Project No. 323530000
Page 2-22
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