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Professional
Registration
Engineer in Training, Indiana
Experience
Mr. Ruthven is a
coastal engineer specializing in nearshore dynamics, coastal structures,
and numerical and physical modeling. He is experienced in circulation
modeling, wave and sediment modeling, inlet processes, hydrographic
analysis, coastal mitigation, and the design and rehabilitation of shore
protection structures. Trey is skilled in the application of computer
programs for two‑dimensional hydraulic and hydrologic modeling, and has
performed two‑dimensional analyses to characterize harbor agitation,
littoral transport, and nearshore contaminant trapping, as well as
inland waters.
Project Experience
Floodplain Analysis
North Carolina Floodplain Mapping,
Lumber River Basin. State of North Carolina.
Project Engineer. Conducted FEMA coastal flooding analysis using the
new Coastal Hazard Analysis Modeling Program (CHAMP) for Ocean Isle
Beach and Holden Beach, NC. Analysis included erosion assessment, wave
height analysis using WHAFIS, and runup using RUNUP 2.0 at Ocean Isle
and Holden Beaches. Revised analysis used new topographic survey data
collected by LIDAR. Created surface TIN model and extracted transects
for analysis. Produced draft work maps for use in creating digital
flood insurance rate maps (DFIRMs).
Review of Hurricane Induced Flood Analysis for the Territory of American
Samoa, Territory of American Somoa, FEMA. Project Engineer.
Conducted a engineering review of the floodplain study for the Territory
of American Samoa. The analysis included a large scale hydrodynamic and
metrological model simulations of historical hurricanes using the
empirical simulation technique (EST) to develop a stage frequency
relationship of water levels to hurricane intensity. Incorporating
wave development and transformation into the islands the associated
runup and surge elevation were evaluated across the surrounding reefs
and shorelines to arrive at flood frequency elevation predictions.
Analysis of Coastal Processes and
Design of Coastal Structures
Palm Island Crescent Breakwater, Dubai. Han-Padron Associates. Project
Engineer. Coordinated planning and engineering related to the
preliminary design of this 10-kilometer structure. Design development
included value analysis and subsequent sizing and specifying of tandem
reef breakwater systems, and berm breakwater geometries. Activities
included harbor tranquility analysis, water quality enhancements,
shoreline impact assessments, and ecological preservation.
Physical Model for the Design Optimization of Outfall Extension, Deal
Lake, New Jersey. U.S. Army Corps of Engineers, New York District.
Project Engineer. Conducted a moveable-bed physical model of the
coastal processes at Deal Lake, NJ to optimize the design location for
an outfall extension. The extended outfall is to accommodate a beachfill
project and resides adjacent to a groin, which will be notched for
improved longshore sediment transport efficiency. Modeling including an
analysis of waves and longshore sediment transport, in conjunction with
multiple layout scenarios to identify a design which would minimize
sedimentation inside the outfall opening. A final report was prepared
detailing the coastal processes, model facilities, testing scheme,
results and recommendations.
Beach Renourishment and Revetment Project, Coney Island Area Storm
Damage Prevention Project. U.S. Army Corps of Engineers New York
District. Assistant Engineer. Developed a design for a 60-ft
closure revetment to a terminal groin to replace a failed temporary
revetment. Developed plans and specifications for beach renourishment,
including backpassing material from a downdrift accretion area.
Physical Model Tests, Ships Harbor, Anacortes, Washington. Bellingham
Marine Industries, Inc. Project Engineer. Conducted 1:40 scale model
test of a sectional concrete floating breakwater to maximize the cross
sectional efficiency, examine wave transmission, wave overtopping,
mooring characteristics, and the general marina layout.
Physical Model Tests, Destination Broadwater Resort, Biloxi,
Mississippi. President Casinos, Inc. Assistant Project Engineer.
Conducted 1:10 scale model test of eight breakwater/seawall
configurations to determine wave forces on seawalls, appropriate armor
size for breakwater, and wave transmission past breakwaters and
seawalls.
Jones Inlet, Spur Jetty Investigation, Long Island, New York. U.S. Army
Corps of Engineers, New York District. Project Engineer. Designed
terminal extension for the existing jetty in order to limit sand loss
into the inlet and better retain future beach renourishment. Analysis
included structural evaluation of existing jetty, determination of
coastal processes including deep water wave climate, refraction and
diffraction of deep water waves to the site, and determination of
extension length and orientation required to achieve sand retention
without negatively affecting inlet hydraulics or down-drift beaches.
Investigation of Spur Jetties. State of New York Department of State.
Project Engineer. Performed a comprehensive review of spur and
L-jetties constructed around the world to determine the impacts of these
structures on navigation, nearshore bathymetry, existing shore
protection works, adjacent shorelines, and local ecology. Based on the
results of the review, a summary was made regarding the potential
impacts of spur construction at Shinnecock Inlet, South Hampton, New
York.
Shinnecock Inlet, West Jetty Modification, South Hampton, New York. U.S.
Army Corps of Engineers, New York District. Project Engineer. Tasked
with conducting a feasibility level study to assess the existing site
conditions and ascertain the causes leading to deterioration.
Preconstruction engineering and design was provided to develop an
alternative to counteract the deterioration. Specific tasks included
assessment of the general condition of the structure, data analyses,
nearshore coastal processes analyses, environmental and storm damage
assessment, recommendations, and drawings for reconstruction.
New Jersey Beach Restoration Project, Long Branch, New Jersey. U.S. Army
Corps of Engineers, New York District. Project Engineer. Examined
the wave forces developing on a system of outfalls and infiltration
structures along the nearshore region of Long Branch, New Jersey.
Ogden Dunes Shoreline Recession Analysis, Ogden Dunes, Indiana. Indiana
Port Commission. Project Engineer. Evaluated and forecasted the
shoreline retreat associated with delegation of liability for the Ogden
Dunes waterfront. Conducted shoreline change forecasting and
partitioning of culpability caused by down drift erosion effects from a
major shoreline installation.
Numerical Modeling
Review of Numerical Modeling Analysis of Dune Breaching and
Back-Bay Flooding, Fire Island to Montauk Point, Long Island, New York.
U.S. Army Corps of Engineers New York District. Project Engineer.
Conducted independent review of modeling of storm surge, wave, and dune
erosion for overwash and breach scenarios. Evaluated ADCIRC and SBEACH
models and how they were linked and applied to the study site. Compared
model results with previous model studies and measured data. Identified
modeling limitations and made recommendations on improvements to overall
storm surge/overwash/breaching approach.
Numerical Model Investigations for Mississippi Sound Environmental
Impact Statement. U.S. Army Corps of Engineers Mobile District. Project
Engineer. Using MIKE 21, developed a two-dimensional wave
transformation model to study wave transformation, at site of proposed
waterfront development project, through barrier islands and across the
shallow bathymetry of the sound during severe storms. Using LITPACK,
analyzed littoral transport along the coastline to characterize the
regional effects the project would have. The analysis was used to modify
the island geometry and characteristics to minimize both updrift and
downdrift influences.
Burns Harbor Agitation Study, Portage, Indiana. Indiana Port
Commission. Project Engineer. Compiled data from a comprehensive
examination of historical meteorological events resulting in damage
within the harbor and inputted the data into a two-dimensional numerical
wave model to hindcast the wave conditions on Lake Michigan. Transferred
the wave climate at the site to a MIKE 21 Boussinesq wave model and
conducted a full harmonic study of the wave environment within the
harbor to characterize resonant harmonics and disturbance coefficients
at mooring locations around the harbor.
Destination Broadwater Circulation and Water Quality Study, Biloxi,
Mississippi. President Casinos, Inc. Project Engineer. Using RMA2/RMA4,
carried out detailed numerical examination of tidal circulation and
water quality in nearshore region. Simulations allowed for testing and
optimization of several design alternatives for a proposed land
reclamation and harbor development.
Alpine Development, Colville River Delta, North Slope, Alaska. ARCO.
Project Engineer. The project consisted of development, calibration,
and execution of a 13,000-element finite element water surface model for
the Alpine Development on the Colville River Delta, Alaska. With the
development of two drilling platforms, runway, and connecting roadway
that extends for approximately 3 miles across the Colville River delta,
a detailed engineering analysis of the water surface elevations was
necessary for engineering design and permitting with the regulatory
agencies. Due to the limited amount of historical water surface
elevation data during extreme flooding events, a numerical water surface
model was required to provide detailed water surface elevations,
velocities, and depths necessary for all aspects of the engineering
design.
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