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1506 West 36th Avenue · ANCHORAGE, ALASKA 99503 · Phone 907.561.1011 · Fax 907.563.4220
November 7, 2008
071105.02
Monty Worthington
Alaska Projects Manager
ORPC Alaska, LLC
911 West 8th Avenue, Suite 205
Anchorage, Alaska 99501
mworthington@oceanrenewablepower.com
Subject: Cook Inlet Tidal Power Pilot Project –Engineering Services
Budget Estimate for Mooring System Conceptual Design
Dear Mr. Worthington:
PND Engineers, Inc. (PND) is pleased to hear that Ocean Renewable Power Company (ORPC) is
moving forward with potential pilot testing of a tidal power generator in Cook Inlet. In support of
this project, we are providing the following estimate of the work scope and budget required to
complete conceptual design of the mooring system for the pilot project.
We understand that the pilot project will consist of a 1 MW tidal generation module deployed in
Cook Inlet near Anchorage. Site investigation work, including bathymetry, current studies and sea
bed/subsurface studies are not included in this estimate, although it is assumed that such studies will
be performed as required to support design and installation of the turbine generator unit (TGU).
Conceptual design of the mooring system will consist of evaluation of design forces and criteria for
the installation, and preliminary sizing and layout of the mooring system. This equates to a roughly
35% design of the final mooring system. There are many variables that can affect how much effort
is required to complete the conceptual design, including whether new of existing materials are used
for the mooring system, the mooring system complexity, and the number of concepts that are
prepared before an acceptable concept is obtained.
Assuming a conceptual design effort with moderate revisions and difficulties, we estimate 200+
hours of conceptual design time for this work, requiring approximately 6 weeks and a budget of
$24,000. We are happy to assist ORPC with this interesting and exciting project.
Sincerely,
PND Engineers, Inc.
Jim Campbell, P.E.
Principal/Senior Engineer