HomeMy WebLinkAboutSS3 - Upper Newport Bay EcosystemAgenda Item No. SS3
WHY ARE WE CONCERNED ABOUT
SEDIMENT DEPOSITION IN NEWPORT BAY?
• Directly impacts open water habitat
• Degrades other estuarine habitats
• Adversely impacts resident and migratory species
• Reduces tidal circulation in the Upper Bay
• Allows easy access to sensitive habitat areas
• Limits recreation and educational uses
• Creates shoals in navigation channels and slips
• Sediment TMDL Compliance
PROJECT OBJECTIVES
• Manage
sediment
deposition in
the Bay to
sustain
a balance
of estuarine
habitats
• Reduce the frequency of dredging maintenance
• Improve or restore estuarine habitats
• Maintain water access for Reserve Managers
• Remove
natural and
man -made
features in
Reserve
that provide
little or no
value
• Increase tidal circulation in stagnant water areas
• Reduce potential human or predator access to
sensitive habitat areas
• Improve public use and access, and educational
and recreational opportunities
PROJECT CONSTRAINTS
• Avoid any net loss in salt marsh habitat
• Limit future changes to all habitat types
• Prevent the advance of one habitat or species at
the cost of another
• Minimize and /or avoid disturbance to wildlife
5
2
7
ram n-1 7.WF
Project Financial Data
• Project Costs - (65% Fed & 35% Non Fed)
➢ Total = $39.2 million (Includes Engineering & Design)
Federal = $25.5 million
r Non - Federal = $13.7 million (Includes LERRDs)
• Non - Federal Contributors
County of Orange - Formal Sponsor
CA Dept of Fish & Game — Formal Sponsor
CA Coastal Conservancy — $13 million grants
• Project Operations & Maintenance
�, 100% Local Cost
� Maintenance Cycle Once Every 21 Years
Project Construction Data
• Contract awarded to DDM in Sep 2005.
• Contract includes:
➢ Base Contract (Ecosystem Restoration)
Options (Basin II Dredging & Northstar)
• Start physical construction in Feb 2006.
• Period for Base Construction is 400 days.
ram 0-1 7.u+F�
�v-rn F'
y �Aiy v
Base Contract
• Base Contract Major Features:
Dredge access channel (Basin I /III & Basin II).
Create New Least Tern Island.
Enhance Hot Dog Island.
Create mudflats at 23rd Street, Shellmaker & Bullnose West.
Restore channels at Middle, New, Hot Dog & Shellmaker
Islands.
• Base Contract Cost:
$11.1 million.
MN MN NO THE4 CORNER of 9 IN 1111 INTA -
J,I T i EY'RJ
Figure 2. Upper Newport Bay Ecosystem Restoration Project
Base Contract Project Features
11
Mobilized Equipment
• 10 -inch hydraulic pipeline dredge.
• Two tugboats.
• Two 3000 cubic yard disposal scows.
• Survey vessel.
• Discharge pipeline.
rW 0-1 7.WF
Staging Areas
• Newport Dunes Marina:
� Interim site.
s Crew change out.
Launch dredge.
Vessel support.
Contractor's work trailer.
• Northstar:
s Interim site.
Stage discharge pipeline.
• Lower Castaways:
Permanent site.
� Usable within two months.
Upper Newport Bay Ecosystem
Restoration
0 IL A ROOM
L
go L P
L t�-
HD PELICAN
Pelican Dimensions
OVERALL
LENGTH W/ LADDER
- 71'
OVERAL WIDTH
- 171795
SUCTION
PUMP DIAMETER
- 12"
MINIMUM
DREDGING DEPTH
- 3'
MAXIMUM
DREDGING DEPTH
- 20 '
FUNCTION: Port & Starboard Bouncy Tanks
DIMENSIONS: 4'x45'
GROSS TONS: 5 each
17
m
19
I
IIIIrivA l
BUILT BY.�
DIMENSIONS
GROSS TONS
ABS:
0
F.M.C. — 1983 — Portland, OR
258 x 45 x 18
1836
Current Load Line
20
BUILT BY: F.M.C. - 1983 - Portland, OR
DIMENSIONS:
GROSS TONS:
ABS:
258 x 45 x 18
1836
Current Load Line
21
22
Terri L. Bru
Length
73'
Beam
24'
Draft
8'
Horsepower
1800
Fuel
23,300
Berths
6
Electronics
Radar Furuno (2)
VHF Icom (5)
Autopilot Comnav
GPS /plotter Echotech (2)
SSB Sea 222
Fathometer Datamarine (2)
23
1p
r i
BUILT BY:
DIM ENSIONS
GROSS TONS
ENGINES:
EQUIPMENT:
Northwind
22'x 8'
10
2 -90 HP
GPS — FATHOMETER
24