HomeMy WebLinkAboutStudy Session - City of Huntington Beach Public Works Depart Su ity
CITY OF HUNTINGTON BEACH
PUBLIC WORKS DEPARTMENT Hunt Beach*
CITY COUNCIL STUDY SESSION
HUNTINGTON HARBOUR DREDGING
EVALUATION UPDATE
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APPROXIMATE OWNERSHIP +" �
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County
{'�' ) ■ Private
City
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This Exhibit of Private Ownership is Preliminary
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BACKGROUND
Hunt g o Nach-
Harbor was built in 60 's
City channels have never been dredged
Main channel dredged by County over 10
years ago
County currently in the process of permitting
dredging of main channel
County anticipates dredging to begin in
January 2015 through May 2015
Su icy
BACKGROUND
Hunr o Reach•
Opportunity to work synergistically with County
that would minimize City design and construction
costs through economies of scale
Streamline CEQA and regulatory permit
processing by piggy backing on County
environmental document
This opportunity prompted dredging study to
assess need for entire harbor
ity Su y
ANALYSIS \
Hunt g o &•sh^
City hired Moffatt& Nichol to perform
bathymetry study to determine existing
channel depth
Recommended Channel Depth
Design depth for County ( Main Channel ) is
10 feet below Mean Low Low Water ( MLLW)
Design depth of City waterways is 8 feet
below MLLW - used for study
Results identified 5 areas of potential
dredging
1ity
OVERVIEW
III
Hunt BeKh-
Area
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1
rea 4
Area 3
Are
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ANALYSIS - AREA I
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1
• • • • Cubic Yards
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•; � � '' � d3,ld tBn 151TE7 �� w%� l
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ANALYSIS AREA 2 II .
Cubic Yards
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`` ) -� end � �w. dr{• Yf !
{
• <51
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ANALYSIS AREA 3
r - - • • • Cubic Yards
0 > 10
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1
ANALYSIS AREA I SLI I�
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• 0 / 0 Cubic Yards
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✓"��` � \ ` n_._ . may, �oF�.� � � "' are,q:.
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v fit✓ �` _ �� _ _�yy�� .,\� .o .���S .�
r - �� .�. \:� ••`�' �. / `°`moo r,
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ANALYSIS
A AREA
RA III
III
. 1 000 Cubic Yards
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Su ity
RESULTS
Ilunr R n [ ,i.h•
Preliminary Project Cost Estimate by Staff:
Total of all areas -30,000 cubic yards
Assumingfuture sampling data ocean disposal
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($ 50 to $ 55 per cubic yard )
Estimated dredging cost of - $ 1. 7M
Environmental , design , permitting and
construction management related cost of
-$300, 000 j
Total Project Cost - $2M
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RECOMMENDATION
Work with Federal Lobbyist to identify potential
sources of funding
Develop needs assessment based upon these
results
Evaluate opportunity with County on dredging
of Area 1 if a need is identified
QUESTIONS?