4th Task Order 01/21/2022 TASK ORDER #4 FOR OPTIONAL SERVICES
UNDER THE SEA LEVEL RISE VULNERABILITY ANALYSIS AND PLANNING
FOR COUNTY MAINTAINED ROADS
INFRASTRUCTURE ADAPTATION AGREEMENT
BETWEEN
MONROE COUNTY AND
HDR ENGINEERING, INC.
In accordance with the Agreement for Sea Level Rise Vulnerability Analysis and
Planning for County Maintained Roads Infrastructure Adaptation Services made
and entered on the 22nd day of May 2019 between Monroe County, hereinafter
referred to as the "County" and HDR Engineering, Inc. hereinafter referred to as
"Consultant".
All terms and conditions of the referenced Agreement for Sea Level Rise
Vulnerability Analysis and Planning for County Maintained Roads Infrastructure
Adaptation Services ("Agreement") apply to the Task Order, unless the Task
Order modifies an Article of the Agreement, in which case the Article will be
specifically referenced in this Task Order and the modification shall be precisely
described.
WHEREAS, the Consultant's scope stipulated that additional project related
activities outside of the required services would be conducted under Optional
Services; and
WHEREAS, the County requested the inclusion of the 2045 Sea Level Rise +
King Tide Unincorporated County Maintained Vulnerable Roadway Segments
that were not included in the initial Conceptual Analysis. Additional roadway
segments, totaling 45 miles, will supplement the 38% critical roadway segments
already assessed and represent the total projected vulnerable Unincorporated
County Maintained roadway segments for the year 2045. The additional roadway
segments will be included into the Conceptual Design, Adaptation, and Financial
Analysis process; and
WHEREAS, including these additional roadway segments provide a more
accurate and comprehensive assessment of the complete potential adaptation
improvement footprint and cost estimate for all the Unincorporated County
Maintained roadway limits; and
NOW, THEREFORE, in consideration of the mutual promises, covenants and
agreements stated herein, and for other good and valuable consideration, the
sufficiency of which is hereby acknowledged, COUNTY and CONSULTANT
agree to modify the Agreement as follows:
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Article 1.1 Terms Of Agreement:
This task order will be effective as of December 17, 2021 and shall terminate no
later than June 24, 2022.
Article 2.2 Scope of Services:
The Consultant will conduct additional services as follows (references are to
Tasks as described in Attachment A, Scope of Services, in the Agreement):
(a) 3.1 Design:
Optional and to be implemented only upon receipt of a notice to Proceed
by the County. Conduct Concept Design for adaptation improvements and
develop roadway typical sections and roadway/stormwater plans.
Additional roadway segments will be included either in new project areas
or added into already defined project areas.
Due Date: April 27, 2022
Deliverable: Provide Concept Plans including roadway typical sections and
roadway/stormwater plans.
Payment: $84,545.37
(b) 3.2 Environmental and Permitting:
Optional and to be implemented only upon receipt of a notice to Proceed
by the County. This task is necessary to conduct Environmental analysis
based on the adaptation improvements. The footprint as well as the
anticipated consequences of the adaptation improvements will be
evaluated against the desktop survey and field assessment to develop a
subset of roadways that have protected resources or locations that could
affect the permitting of the proposed strategy. Environmental analysis and
field assessment information will be made available through
corresponding GIS layers. A summary of the required permitting efforts
and the corresponding stakeholders will be provided for future use in the
design phase.
Due Date: April 6, 2022.
Deliverable: Technical Memorandum that includes a summary of the
Environmental analysis.
Payment: $11,793.60
(c) 3.3 Surveying and Mapping:
Optional and to be implemented only upon receipt of a Notice to Proceed
from the County. This task is necessary to conduct desktop assessment
and field survey on specific identified roadway segments where there are
anticipated Right-of-Way impacts or existing roadway limits are located
outside of public Right-of-way. A summary of the Right-of-way
assessment and survey will be provided for future coordination and use in
2
the Design Phase. Additionally, this task enables the provision of existing
ground Digital Terrain Model (DTM) surface areas obtained from the
LiDAR to be referenced in Microstation for the assessment of cross
sections and existing ground elevation analysis.
Due Date: January 31, 2022
Deliverable: Microstation (CAD) Right-of-way files for impacted limits and
DTM Surface Areas for new roadway limits
Payment: $12,597.80
(d) 3.4 Cost Estimates and Benefit-Cost Analysis:
Optional and to be implemented only upon receipt of a Notice to Proceed
from the County. Conduct cost estimates for additional roadway limits and
include into Financial Analysis.
Due Date: May 4, 2022
Deliverable: Cost Estimates for updated/additional Project Areas based on
additional roadway limits and Technical Memorandum summarizing
Financial Analysis.
Payment: $32,743.62
(e) 6.1 Develop Implementation Plan:
Optional and to be implemented only upon receipt of a Notice to Proceed
from the County. Develop a regional, comprehensive, and integrated
roads adaptation plan based on the results and guidance from previous
tasks. Determine schedule on when corresponding adaptation
improvements are required to be implemented.
Due Date: January 31, 2022
Deliverable: Section in Final Report that includes the Adaptation plan.
Payment: $12,022.92
Article 7.1 Payment Sum: The amount of the task order is not to exceed One
Hundred Fifty-Three Thousand Seven Hundred and Three Dollars and Thirty
One Cents ($153,703.31). Individual tasks shall be lump sum. The task order is
not to exceed only to allow flexibility in the scheduling of the optional tasks.
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IN WITNESS WHEREOF, each party caused the Task Order to be executed by
its duly authorized representative.
CONSULTANT: WITNESS:
HDR ENGINEERING, INC.
12/20/2021 20/2021
Sign4t e Date Signature Date
Jenn E. Hunt, PE KA c c)rQA\k--, :O.P-4�t)
Senior Vice President
Title
MONROE COUNTY:
COUNTY ADMINISTRATOR Roman Gastesi
01.25.2022
Signature-7 Date
Approved as to form and legal sufficiency:
Monroe County Attorney's Office 12-20-2021
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ATTACHMENT A
Monroe County Roadway Vulnerability Analysis and Capital Plan
Scope of Services (FINAL)
REVISED:
This scope is for the provision of professional services provided by HDR Engineering, Inc. (HDR)for the
Monroe County(County) Roadway Vulnerability Analysis and Capital project.The roadways maintained
by the County that will be evaluated under this study are identified under Exhibit A. A series of
Technical Memorandums will be produced throughout the schedule of the project requiring the review
and approval of the County. Technical Memorandums will be submitted in electronic format and will be
included as part of the Final Report. The project schedule accommodates a draft technical
memorandum review for one (1) iteration of comments from the County and approval for final technical
memorandum for the corresponding memorandum submittals.
1. Task 1: Data Collection
1.1. Initial Assessment
1.1.1. LiDAR Review: The LiDAR was prepared by Michael Baker International (MBI) under a
separate contract with the County. LiDAR data will be reviewed for accuracy,
completion, and compatibility with GIS and Microstation (CAD)for use under this
contract.
1.1.1.1. All surveys will horizontally reference the Florida State Plane Coordinate
System, East Zone, NAD83 (NSRS 2011) and vertically reference NAVD88
(Geoid 2012B).
1.1.1.2. Assess use of Florida Permanent Reference Network (FPRN)for survey work
and set additional control points and/or conduct site calibration to high-order
vertical control as necessary.
1.1.1.3. Recover and review MBI survey control points
1.1.1.4. Obtain project limit boundary of MBI Mobile LiDAR collection
1.1.1.5. Collect quality assurance (CIA) checkpoints throughout the project limit
boundary to assess accuracy of Mobile LiDAR collected by MBI. Survey
horizontal and vertical position at each CIA checkpoint location. Twenty(20)
CIA checkpoints will be surveyed in each of the following 5 land cover
classifications (100 CIA checkpoints total): Open terrain (sand, rock, dirt,
plowed fields, lawns, golf courses),Tall weeds and crops, Brush lands and low
trees, Forested areas fully covered by trees, and Urban areas with dense man-
made structures.
1.1.1.6. Collect Finished Floor Elevations (FFE) from a representative sample of
County buildings (20 total)to be determined and approved by the County.
Survey horizontal and vertical position at front door, patio, porch, etc.
1.1.1.7. Use horizontal positions of all CIA checkpoints and FFE locations to overlay
with Digital Elevation Model (DEM) developed in Initial Assessment through
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GIS Analysis. Extract elevation from DEM at each surveyed location (120
total) and compare Surveyed vs DEM elevations. Generate Root Mean Square
Error (RMSE)for the dataset. RMSE*1.96 should agree with MBI specified
accuracy of 0.1' at 95%confidence interval.
1.1.1.8. Develop technical memorandum
Deliverable: Technical Memorandum is to include description of LiDAR information
submitted, including but not limited to coverage and completeness. The verification
process and the results obtained for the MBI LiDAR data review will be provided. Should
inconsistencies with the data be identified, these inconsistencies will be summarized
and submitted to the County for correction by MBI. The scope accounts for one (1)
iteration round and for the delivery of one updated LiDAR data set that has addressed
all inconsistencies identified.
1.1.2. GIS Analysis: Using mobile LiDAR survey data to map out the present-day roadway
elevation and assort the roadway segments in order of roadway elevation. Develop GIS
Map using color configuration to depict the different existing roadway elevation
segments, based on the LiDAR data. Develop a mobile GIS tool for use by the field
personnel conducting field verification under Tasks 1.3—1.5. Field data and digital
photos from the Collector app will be wirelessly transmitted to the established
Geospatial Portal for viewing by the project team via web maps, and will be exported to
Desktop ArcGIS for incorporation in the project's GIS database.
1.1.2.1. Develop GIS database for project starting off with documentation of LiDAR
data and Monroe County Road Atlas list of 1,202 roadway segments/locations
provided with the RFQ and included as Attachment A.
1.1.2.2. Map out colored roadway segments (use color code configuration for
segment elevations) comparing the existing road elevations with the existing
mean high water elevations.
1.1.2.3. Conduct a meeting with the County to identify immediate areas and/or
roadway segments of concern related to the data, such as obvious
discrepancies and also gaps in data between actual recorded flooding
locations and GIS low elevation areas as well as define parameters for
screening analysis that include but are not limited to roadway elevation,
proximity to ocean, existing flooding conditions based on maintenance record
maps and/or citizen complaints, FEMA boundary maps, history of King Tide
flooding events (NOAA CO-OPS tide stations), etc.
1.1.2.4. Develop technical memorandum
Deliverable: Technical Memorandum will include the description of the screening
analysis process for the evaluation of the exiting ground information (LiDAR Data) and
the existing mean high water elevations to determine the critical and non-critical
roadway segments. A summary of the results will be provided and a GIS map layer will
be developed that will depict all County roadway segments with different colors
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assigned based on the range of elevations and mean high water elevation clearance
they fall under.
1.1.3. Site Assessment and Condition Survey: Includes assessment of roadway pavement
conditions and assessment of the anticipated service life relative to the condition of the
existing roadway surfaces. Condition data collection will be conducted using a Wood
owned and operated digital imaging vehicle on roadways identified under Exhibit A
throughout the study area and based upon the existing PAVER database (314 miles and
3,123 PAVER sections).The PAVER sectioning will also be overlain on the 1,202 sections
identified in Exhibit A for alternative reporting purposes. Distress data will be obtained
from images using PAVER Imagelnspector and evaluated by experienced pavement
distress raters in accordance with ASTM D6433-16 "Standard Practice for Roads and
Parking Lots Pavement Condition Index Surveys". Condition for each roadway section
will be calculated in PAVER and reported in tabular and map formats.The predictive
modeling function within PAVER will be used to forecast the remaining service life for
each roadway section.The built-in GIS tools within PAVER will be used to create
inventory and condition data for use in Desktop ArcGIS.
1.1.3.1. Information requests, sectioning review, data collection routing, and field
prep
1.1.3.2. Digital imaging data collection
1.1.3.3. Condition surveys from collected images using ASTM D6433-16.
1.1.3.4. Produce current condition of roadway PAVER sections
1.1.3.5. Modeling of pavement service life based on current condition of each section
1.1.3.6. Document information in GIS with map and tabular reports
1.1.3.7. Develop technical memorandum.
Deliverable: Technical Memorandum will include a summary of the criteria established
for assessments and a table listing sections assessed with a rating of"poor,fair, and
good" based on current condition for all roadway segments identified in Exhibit A. The
results of the existing pavement assessment will be presented in tables and also
available through GIS maps. Additionally,through predictive modeling and the use of
the existing pavement assessment data, a summary of the forecasted year of terminal
life for each roadway segment will presented in a table format and graphical
presentation of network condition transition by year.
1.2. Tidal Data: Historical water levels will be obtained from the NOAA CO-OPS tide stations,
available through the Tides and Currents portal (https://tidesandcurrents.noaa.gov). For
Monroe County proper,water levels are available at Key West, FL [Station 8724580], Vaca Key,
FL [Station 8723970], and neighboring Naples, FL[Station 8725110].The high frequency 6-
minute water level observations go back to 1996 for the three stations. In addition, harmonic
constituents and meteorological observations are available at these three stations. Review of
Existing Digital Flood Insurance Map data and other spatial data for future flood prone areas.
Work with GIS to map out data. The Stetson University/Clearview Geographic LLC Vulnerability
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Assessment, Infrastructure Inventory and Sea-Level Rise Vulnerability Assessment for Monroe
County Stormwater Drainage Systems report will be referenced and reviewed for Tidal data
consistency purposes and/or identification of any specific variables to be considered in the
projection analysis to be conducted in Task 2.2.
1.2.1. Evaluation of Tide Gauges to determine evolving tidal data rates
1.2.2. Evaluation of existing digital flood insurance map data
1.2.3. Document information in GIS
Deliverable: Determine evolving tidal rate to establish a baseline for projected sea level
changes. Information will be documented and used under Task 2.2 King Tide Predictions.
1.3. Roadway Data: Identify roadway Characteristics and functional classification. Develop
generalized Typical Sections for different types of existing roadway conditions. Using available
GIS and desktop data, document existing readily visible utilities, Signs, and Signals. Inventory of
existing bridges with typical section and specific structural information. Define roadways by
category to develop type of roadway improvements based on area and/or type of roadway.
1.3.1. Desktop and/or GIS review of the locations identified on Exhibit A to gather following
information:
1.3.1.1. Typical Section (Number of lanes, shoulder/C&G, divided/undivided)
1.3.1.2. Sign inventory(Sign inventory was conducted by MBI and will be provided by
the County)
1.3.1.3. Utilities
1.3.1.4. Lighting
1.3.1.5. Bridges (number of lanes, number of spans, railing type, location)
1.3.1.6. Intersections/side streets
1.3.1.7. Driveways/turnouts
1.3.1.8. In accordance with the latest Monroe County Comprehensive Emergency
Preparedness plan (dated 2012) a list of"Essential Services, Critical Facilities
and infrastructure", these facilities may be either emergency incident sites
due to disaster impacts, or could be used as emergency management support
facilities. Identify Critical County infrastructure in the vicinity of roadway
segment/location including but not limited to healthcare/hospitals,
fire/rescue, airports, law enforcement/military, schools/shelters,
State/Government, water/wastewater, solid waste, and worship buildings
listed in the Monroe County Comprehensive Emergency Preparedness plan.
1.3.2. Review available information from County (Existing project plans, reports, right-of-way
maps)
1.3.3. Geotechnical: Review and compilation of historical documents provided by the county;
documents may include geotechnical soil borings, existing underground utility plans, as
built roadway records, and roadway construction drawings.The County is to provide
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geotechnical information collected as part of the sewer installation project that included
the installation of deep and shallow injection wells throughout the County. Existing data
limits will be documented to determine extent of coverage and develop a
comprehensive exploration program to supplement available County data. US Soil
Conservation Service soil maps will be developed for assistance with drainage design
and supplemented with double ring infiltration (DRI) tests. The DRI tests will determine
infiltration rates and will include hand auger borings to determine seasonal high water
table and existing ground water level. Soil samples will be classified in accordance to
ASTM D2487 and D2488. Conduct soil borings and pavement cores for pavement
designs. The exploration effort will consist of ten (10) site visits where allowable testing
within the allocated timeframe would be obtained.
1.3.4. Field assessment for desktop information field validation and capture additional data.
1.3.5. Document information in program GIS
1.3.6. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the existing available
information provided by the county that lists specific geotechnical, roadway, and utility data as
well as data coverage and specific infrastructure location. The technical memo will also include
a summary table for the information gathered through desktop review and field verification of
specific roadway characteristics, roadway functional classification, posted speed, typical section
description, intersections/side streets, driveway access points, Critical Facilities, and bridges for
each roadway segment listed in exhibit A. All collected roadway information and inventory will
be available under corresponding GIS layers.
1.4. Stormwater Structures: Collection and review of County available data and integrating
information into the GIS database. The County is to provide GIS data that entails a layer with
information and location of existing stormwater structures. Hydraulic modeling is not part of
the scope for this project.
1.4.1. Desktop review of the locations identified in Exhibit A to determine type of roadside
stormdrain system in place and location of structures.
1.4.2. Review past designs, reports, analysis, GIS data, and studies to be provided by the
County.
1.4.3. Survey of downstream pipes and outfalls
1.4.3.1. Collect CIA checkpoints on 5%(approximately 25 features) of stormwater
drainage structures based on the Stetson University/Clearview Geographic
LLC Vulnerability Assessment, Infrastructure Inventory and Sea-Level Rise
Vulnerability Assessment for Monroe County Stormwater Drainage Systems.
The report's inventory of stormwater drainage systems owned and
maintained by the County included catch basins (n =300), injection wells (n =
41), manholes (n =67), trench drains (n =84), and pipe outfalls (n =37).
1.4.3.2. Perform field surveying via RTK GPS or conventional methods when necessary
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1.4.3.3. Survey invert elevation at center of each assigned outfall structure directly or
by offset.
1.4.3.4. Digitally record outfall pipe diameter or dimensions
1.4.4. Field assessment for desktop information field validation and capture additional data
1.4.5. Document information in GIS
1.4.6. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the existing available
information provided by the county that lists specific stormwater data as well as data coverage
and specific infrastructure location. The technical memo will also include a summary table for
the information gathered through desktop review, survey, and field verification of stormwater
facilities for each roadway segment listed in exhibit A. All collected stormwater information and
inventory will be available under corresponding GIS layers.
1.5. Environmental Assessment: Develop a database that covers the study limits and will first be
populated with observable information obtained from desktop references such as: Google
Earth aerial and street view imagery, United States Fish and Wildlife (USFWS) National Wetland
Inventory(NWI) coverages, the Monroe County Canal Management Master Plan Database, and
the Florida Natural Areas Index. Additionally, collection and review of County available data and
integrating information into the overall project GIS database. The County is to provide GIS data
that entails a layer with information and location of existing environmental features.
1.5.1. Desktop assessment
1.5.2. Field assessments as needed for clarification
1.5.3. Document information in GIS
1.5.4. Develop Technical Memorandum
Deliverable:Technical Memorandum will include a summary of the existing available
environmental information provided by the county and information gathered through desktop
review, and field assessment. Information gathered will be used to map out the environmental
areas/natural resources throughout the County. All collected environmental information and
inventory will be available under corresponding GIS layers.
2. Task 2: Engineering Analysis
2.1. Sea Level Rise Projections:The Southeast Florida Regional Climate Change Compact Sea Level
Rise Work Group's Unified Sea Level Rise Projection for Southeast Florida (2015)contains
summaries of various sea level rise projection ensembles including those produced by the
National Oceanographic and Atmospheric Administration (NOAA), United States Army Corps of
Engineers (USACE), the Intergovernmental Panel on Climate Change (IPCC) and others,with a
focus on the business-as-usual greenhouse gas emissions scenario (RCP 8.5).The SLR
projections will be conducted for all County roadways identified in Exhibit A.
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2.1.1. The Compact's report and associated projections will be reviewed and evaluated against
worldwide and current best-practice for estimating sea level rise projections.
2.1.2. A review of other potential approaches and climate model datasets for estimating sea
level rise will be conducted and evaluated against those presented above.
2.1.3. A series of estimates for sea level rise will be recommended for 2025, 2030, 2035, 2040,
2045, 2060, and 2100 along with associated uncertainty ranges and whether different
estimates should be applied for different locations across the County.
2.1.4. Document information in GIS
2.1.5. Develop technical memorandum
Customized climate modeling (i.e., acquiring and analyzing climate model output directly) is not
included in the scope and estimates recommended will be derived from existing studies,
reports, or tools.
Deliverable:Technical Memorandum will include a summary of the evaluation,justification, and
recommendation of the Sea Level Rise estimates for 2025, 2030, 2035, 2040, 2045, 2060, and
2100. Sea level rise estimates will also be made available in a format suitable for input into
subsequent analysis and modeling step. A review of other potential approaches and climate
model datasets for estimating sea level rise will be conducted and evaluated against the
Southeast Florida Regional Climate Change Compact.
2.2. King Tide Predictions: Use the NOAA Tide and Currents program data gathered from the
applicable stations to conduct a harmonic analysis to obtain harmonic constituents and
ultimately determine future tidal and king tides amplitudes and peak times. Published king tide
data from at least 2015, 2016, 2017 and 2018 will be used to document extreme tide water
levels.
Using the T_TIDE (https://www.eoas.ubc.ca/rich/#T_Tide [1]) Matlab routines a harmonic
analysis will be conducted on the observed water levels in order to obtain the harmonic
constituents. Although harmonic constituents are provided by NOAA at the aforementioned
stations, the time duration of the time series used by NOAA for the analysis varies per station
and can range from 1-3 months to years (personal communication, NOAA CO-OPS staff).
Computing the harmonic constituents directly from observations thus provides a more uniform
and detailed procedure to obtain the harmonic constituents from which future tidal and
particularly King tide amplitudes and peak times can be accurately predicted. In addition, NOAA
provides relative sea level trends and extreme water level charts that could be used to compare
and aid with the water level analysis.
As meteorological observations are available, this also allows for a more complete analysis as
atmospheric related frequencies and events can be used for the pre-processing and analysis of
the observed water levels.Analysis of atmospheric observations jointly with residual (de-tided)
water level time series provides the basis for a preliminary assessment of the effects of wind
setup on water levels for normal conditions.
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Besides aiding in the identification of specific atmospheric event which could have a direct
impact on King tide amplitudes, the wind and pressure time series allow for a frequency
analysis from which a filter can be applied to the observed water levels to obtain an estimate of
the overall contribution of wind and pressure to Kind tide amplitudes. From this a percent or
ratio will be applied to future estimates of astronomical King tide amplitudes to take into
account the atmospheric influence on normal water levels.
2.2.1. Review NOAA Tide and Current program data from applicable stations
2.2.2. Assess the increased water level due to wind setup for normal conditions
2.2.3. Determine future King Tide water levels including wind setup
2.2.4. Document Information in GIS
2.2.5. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the evaluation and
recommendation of the Tidal Predictions and an assessment of the effects of wind setup on
water levels for normal conditions for 2025, 2030, 2035, 2040, 2045, 2060, and 2100.
2.3. Storm Surge,Wind Waves, and Extreme Events Analysis:
Conduct numerical modeling using MIKE21.The relatively large area combined with spatial
variability in terrain (topography, bathymetry, shoreline alignment, etc.)would require the
overall project area to be broken up into multiple high-resolution domains.The models will be
run for a range of seasonal and extreme storm conditions at each time increment to help
forecast increased vulnerability over time. Sea level rise and seasonal water values provided
under Tasks 2.1 and 2.2 would be applied. Water level values for extreme storm surge
(hurricane flooding)will be obtained from published studies by FEMA, NOAA, or other sources.
Bathymetry and topography will be obtained from existing sources (no field surveys are
included). Where appropriate, the bathymetry in the models could be varied for certain time
increments to reflect long-term erosion trends; erosion trends would be based on readily-
available published data from previous studies.
Evaluation of the water surface elevations associated with extreme storms are a combination
of sea level, storm surge, wind waves, and astronomical tides associated with Saffir-Simpson
storm categories (1-5)for current storms and future storm scenarios at future SLR levels.Work
with GIS to map information. The Roadway adaptation improvement projects are not to be
exclusively designed to withstand major storm and extreme events.
2.3.1. Data Collection
2.3.2. Conduct Modeling with MIKE21
2.3.3. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the evaluation and
recommendation of the storm surge,wind waves, and extreme events analysis for 2025, 2030,
2035, 2040, 2045, 2060, and 2100. The SLR projections and King Tide Predictions in association
with current and future storm scenarios will be referenced in the MIKE21 software to model
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water surface elevations. Modeling information will be integrated with GIS and simulation
video/graphics will be produced for public and stakeholder outreach activities.
2.4. Vulnerability Assessment and Inundation Mapping: Conduct a SLR vulnerability study of the
roads to tidal and surge flooding conditions. Develop a GIS-based vulnerability assessment
model to identify and prioritize the County's roadways at risk for adverse impacts due to
climate change.The model will be developed in the Spatial Modelbuilder environment of
Desktop ArcGIS 10.6.1 using the raster overlay tools in the Spatial Analyst extension.The first
stage of the vulnerability modeling involves identifying the roadways that will be physically
affected.There are three principal effects to consider:
• Increase in Groundwater Elevation—As sea level rises,the Mean High High-Water(MHHW)
groundwater elevation will also increase. Using the high-resolution LIDAR of the roadway
surface and an estimate of future groundwater elevations, GIS model will identify those
sections of roadway that will not have adequate clearance above the MHHW groundwater
table.
• Sea Level Rise Inundation—Roadways in low-lying areas near the coastline will be subject to
more frequent, periodic inundation by high tides as sea level rise progresses over time.The
GIS model will compare the LIDAR roadway elevation against the MHHW ocean elevation for
each sea level rise scenario and time frame chosen for the study to identify which streets
will be subject to flooding under those conditions.
• Storm Surge Inundation—The higher stand of the ocean elevation due to sea level rise will
exacerbate the flooding induced by King tides and hurricane storm surge. GIS model will
apply the storm surge elevations associated with the Hurricane Category most appropriate
for the future sea level rise scenarios and time frames to identify those roadways at risk of
inundation.
Following the identification of at-risk roadways, GIS model will evaluate the criticality of the
roadways affected based on a variety of engineering, environmental, cultural and emergency
response factors. Each factor would be assigned a weight in the GIS model that could be
adjusted to reflect their relative importance as determined following coordination with the
County. A vulnerability flood score will be assigned to each one of the County roadway segments
listed in Exhibit A. All segments will be individually ranked based on their vulnerability flood
score.
Inundation mapping will be provided utilizing a GIS tool that is designed to looks at smaller scale
areas of inundation.This tool will be used to focus in on smaller scale inundation mapping areas
such as specific Key or geographic feature of interest.
2.4.1. Set up GIS Vulnerability Assessment Spatial Modelbuilder Model and all GIS data sets
2.4.2. Conduct meeting with the County to establish criticality parameters and weight factors.
2.4.3. Conduct vulnerability assessment for 2025, 2030, 2035, 2040, 2045, 2060, and 2100.
Generate Vulnerability Score for the 1,202 County road segments/locations.
2.4.4. Develop inundation maps for different scenarios.The project area will be categorized
relative to flood exposure as well as critical areas.
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2.4.5. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the applicability and operation
of the GIS model, criticality analysis methodology, the inputs it requires and the outputs it
generates, and a vulnerability flood score for the County roadways identified in Exhibit A.
Inundation maps that cover all the County roadways identified in Exhibit A will be prepared for
2025, 2030, 2035, 2040, 2045, 2060, and 2100. Inundation analysis data will be available under
corresponding GIS layers.
2.5. Prioritization of Roadway Segments based on Vulnerability Assessment: Development of a
flexible scheme (tier 1 and 2 evaluation with final scoring) based on the results from the
vulnerability analysis conducted through the GIS-based vulnerability assessment model and
information gathered from the County's decision makers and policy administrators.
The primary focus areas referred to as the 1st Tier Criteria will be based on project constraints
that most effect the ability of the County to implement a specific project. Such constraints that
could possibly be scored within the prioritization scheme's 1st Tier Criteria include but are not
limited to the following:
• Roadways within geographic areas with high populations
• Vulnerability Flood Score
• Time of need for adaptation improvement projects
• Roadways that are already experiencing disruptions of service due to sea level rise based
on maintenance records and/or documented complaints,
• Proximity of vulnerable roadways to critical infrastructure or social services,
• Effects of sea level rise on designated evacuation routes or emergency response networks,
• Ability to implement adaptation improvement projects that mitigate flooding conditions
through ongoing or future programmed County projects, and
• Stormwater system Downstream capacity and conditions based on the Stetson
University/Clearview Geographic LLC Vulnerability Assessment, Infrastructure Inventory and
Sea-Level Rise Vulnerability Assessment for Monroe County Stormwater Drainage Systems
and data collected under Task 1.4.
The prioritization scheme's 2nd Tier Criteria will focus on constraints such as:
• Anticipated project cost estimates (first level) (Conceptual cost estimates are to be
developed under Task 3.4)
• Right-of-way needs and acquisition
• Funding sources
• Ability to group segments in independent design and construction projects
• Service Life, and
• Permitting requirements
2.5.1. Develop materials for team internal working meeting.
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2.5.2. Conduct working meeting with the County to conduct prioritization exercise and
document the provision of additional input and/or data. Prioritization exercise will
define the 300(25%of 1,202) highest ranked roadway segments/locations will be
recommended for concept development evaluation.
2.5.3. Develop technical memorandum
Deliverable:Technical Memorandum will include a summary of the results and input from the
flexible scheme analysis, list of 300 roadway segments recommended to move forward with
adaptation improvements, and prioritization schedule.
3. Task 3: Flood Mitigation Concept Development
Develop general flood mitigation concepts for the 300 roadway segments/locations recommended
as a result from the Prioritization of Roadway Segments. Include additional roadway segments,
totaling 20 miles of County maintained roadways (equivalent to 148 additional roadway segments),
into the Conceptual Engineering Design assessment. Additional roadway segments will supplement
the initial 25%critical roadway segments (78 Miles of County Maintained Roadways) selected to
proceed as part of the Engineering Conceptual Design assessment.The additional roadway
segments provide coverage of the vulnerable roadway limits, as identified through the methodology
of this study, anticipated to be impacted by the King Tide predicted water levels for 2045. Including
these additional roadway segments provides a more accurate assessment of the potential
adaptation improvement footprint and cost estimate for each of the project areas. With the
additional roadway segments, a total of 98 miles of County Maintained Roadways will be assessed
under the Conceptual Engineering Design.
In order to provide a complete County wide assessment, the 2045 Sea Legal miss+ King Tide
Unincorporated County Maintained Vulnerable Roadway Segments that were not Included in the
M ial Conceptual Analysis is recommended to he Mcluded. AddItIonal roadway segments, totaling
45 miles, will supplement the 38%critical roadway segments already assessed and represent the
dotal projected vulnerable Unincorporated County Maintained roadway segments for the year 2045.
The additional roadway segments will be Included Into the Conceptual Design, Adaptation, and
Financial Analysis process.
Concepts to consider potential phasing of future adaptation and evaluation for opportunities to
implement green infrastructure and green road solutions. The roadway segments requiring
adaptation improvements to be implemented between 2025 and 2035 will have a more detailed
concept development and plans in comparison to the roadway segments requiring adaptation
improvement plans beyond 2035. Nonetheless, extremely vulnerable roadway segments requiring
adaptation improvement plans beyond 2035 will be identified and its level of concept development
and plan details adjusted accordingly.
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3.1. Design
3.1.1. Roadway Design:
Criteria and Standards: Define roadway criteria and standards to be used in the
evaluation based on roadway category. Development of typical section and
identification of proposed non-compliant elements.
Green Infrastructure and Green Road Solutions: Worldwide case studies will be
evaluated to determine innovative solutions that complement the green engineering
design. Incorporation of recreational opportunities will also be considered as part of
the adaptation improvements evaluation and recommended where applicable and
feasible to implement. Consideration of available road side undeveloped County
owned parcels of land will be evaluated for stormwater management and
recreational opportunities. Permeable asphalt surfaces, underground stormwater
collection systems, and/or bio-swales are some options that will be considered as
part of green engineering solutions.
Pavement Design: Develop three general reconstruction pavement design
recommendations for low, medium, and high traffic areas. Requires soil boring and
pavement cores at certain locations (Geotechnical efforts included under Task 1) and
review of FDOT traffic count stations if available.
Utilities: Establish potential impacts with proposed roadway improvements. Scope
does not include sub surface utility engineering.
Maintenance of Traffic: Evaluate the MOT for proposed improvements to identify
challenges and applicable MOT level in accordance with the FDOT Design Manual.
Signing and Pavement Marking: Evaluate potential signing and marking to determine
if specific challenges or issues arise from corresponding adaptation improvements.
Landscape:Assessment for existing tree or vegetation impacts as well as identify
specific locations that would require the restoration or addition of new landscape to
help mitigate erosion and/or compliment the aesthetics of the residential areas
based on proposed improvements.
3.1.2. Stormwater Design:
Conduct a criticality/prioritization analysis of storm water infrastructure in conjunction
with the vulnerability assessment. Evaluate existing infrastructure operation and
recommendations to improve the system against degree of flooding and ability to
efficiently remove the water trapped as a result of increased elevation of roadways and
infrastructure. Evaluation to be based on available published precipitation data, as well
as the anticipated rise in sea-level over the next fifty years. Hydraulic modeling is not
included as part of the scope. A spread analysis in conjunction with the Stetson
University/Clearview Geographic LLC Vulnerability Assessment report, additional
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available County data, and survey data collected under Task 1.4 will be referenced to
conduct an evaluation of existing stormwater infrastructure for capacity and conditions,
for which identification of repairs, replacements and new infrastructure needs will be
identified.
Analyze additional alternatives to solving potential flooding/drainage problems other
than road elevation.
3.1.3. Evaluation of Existing Bridges:
There are 27 bridges along the County roads under the study. Evaluation of existing
bridges located along roadway segments that are being recommended for adaptation
improvements using existing available inspection reports including the Bridge
Assessment Report dated September 2014.This task does not include field bridge
inspections. Determine whether bridges can be modified or need to be replaced based
on location, type of bridge, current conditions, adaptation improvements, and SLR
impacts.
3.1.4. Develop roadway and drainage concept plans including typical section, plan layout, and
specific details.
3.1.5. Develop technical memorandum
Deliverable:Technical Memorandum will include summary of design decisions and overview
analysis of the recommended improvements for the 300 roadway segments/locations
recommended as a result from the Prioritization of Roadway Segments as well as including the
additional 20 miles of County maintained roadways (equivalent to 148 additional roadway
segments) and the remaining 45 miles of 2045 Sea Legal miss+ King Tide Unincorporated County
Maintained Vulnerable Roadway Segments, into the Conceptual Engineering Design assessment.
Concept Plans including roadway typical sections and roadway/stormwater plans will be
included. Bridge adaptation improvements will be provided with applicable roadway segments.
3.2. Environmental and Permitting: Conduct environmental impact assessment and identify
required permitting with respect to proposed scope and roadway adaptation recommendation.
Compare the recommended roadway adaptation improvements with the information obtained
during the desktop survey to develop a subset of roadways that have protected resources or
locations that could affect the permitting of the proposed strategy. The results of the
evaluation will be included as part of the database. Based on the findings of the desktop
review and the recommended adaptation improvement locations,the team will conduct site
visits to a subset of roadways that are likely to have ecological constraints that would require
additional permitting through the following agencies:
• United States Army Corps of Engineers,
o USFWS -Consultation
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o NM FS—Consultation
• Department of Environmental Protection
• South Florida Water Management District,
• Florida Keys National Marine Sanctuary, and
• Monroe County, FL.
The limited assessment will document the presence of water resources, mangroves, and special
status species for designated roadways per Task 2.5. Personnel will also investigate the site for
the purpose of identifying water control structures. For roadways whose strategy involves the
installation or modification of water control structures, the limited site evaluation will involve
the performance of in-water inspections for up 25 sites where Outstanding Florida Waters
could be effected.The performance of in-water surveys will be based on need and site
conditions.
During each site visit, professional staff members will take notes on observed conditions, photos
of protected resource or structures that may influence the permitting process, and document
whether the road serves residences or commercial enterprises.The information obtained during
the survey will be added to the GIS database. The proposed database will be populated with
information obtained during the desktop and limited site assessment activities.The information
obtained from the field exploration will be used to evaluate permitting requirements relative to
the proposed resiliency recommendation. Furthermore, the database will identify which permits
and permitting agencies may have jurisdiction based on the proposed strategy.
Deliverable:Technical Memorandum will include a summary of the Environmental analysis
conducted based on the adaptation improvements. The footprint as well as the anticipated
consequences of the adaptation improvements will be evaluated against the desktop survey and
field assessment to develop a subset of roadways that have protected resources or locations
that could affect the permitting of the proposed strategy. A list of anticipated permits for the
proposed improvements along the 300 roadway segments and the remaining 45 miles of 204
Sea Legal miss+ King Tide Unincorporated County Maintained Vulnerable Roadway Segments
will be provided. Environmental analysis and field assessment information will be made
available through corresponding GIS layers.
3.3. Surveying and Mapping: Collect additional ground survey, right-of-way and other site and/or
private property limits based on proposed improvements. Right-of-way survey and data
received to be used for identification of potential encroachments on to private property.
3.3.1.1. Perform research to obtain property plat(s) and deed(s) of record adjacent to
each subject area. Obtain record right-of-way width from County or State
authority and right-of-way plans of record, if available. Also research relative
utility easement information.
3.3.1.2. Plot and mosaic record plans and deeds in Microstation (CAD), overlay on existing
orthophotography.
3.3.1.3. Conduct field surveys to locate boundary and right-of-way evidence called-for on
plans of record, evidence found existing in the field and physical and man-made
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features required to determine boundary, right-of-way and easement lines that
impact the subject area.
3.3.1.4. Resolve final boundary, right-of-way and easement lines from mosaic and field
surveyed evidence and deliver in Microstation (CAD)
3.3.1.5. Develop the Digital Terrain Model (DTM) 3D surface files for the additional
roadway segments to be used for development of roadway cross sections and
evaluation of existing ground elevations.
Deliverable: Mlcrostation (CAD) Right-of-way files and DTM .TIN files to be used in Microstation.
3.4. Cost Estimates and Benefit Cost Analysis: Develop conceptual roadway cost estimates for
preliminary design concepts using the FDOT published Historical Unit Cost. Coordination with
the County will also be conducted for review of recent County project bid tabs and construction
prices. A percentage value will be assigned for other design components such as Signing and
Pavement Marking and MOT.
Prepare a financial pro forma model to estimate the cost of service required for resiliency
improvements and estimate potential future revenue from property taxes over a 20-30 year
operational period. A financial analysis will be conducted for 60 proposed project areas.
Includes the new project areas or modification of defined project areas that Include the
remaMMg 45 miles of 2045 Sea Legal miss+ King Tide Unincorporated County Maintained
Vulnerable Roadway Segments.
Develop future projections of capital and annual operations and maintenance costs. Capital
costs will potential annual bond payments costs given historical bond information provided by
the County.
Develop future projections of property tax revenues given current and historical demographic
and property value escalation trends, property value gains for encumbered properties, and
standard assumptions for storm water utility revenue capture.The team will estimate up to
three (3) revenue scenarios to reflect any uncertainties in future revenues.
Develop a Cost of Service model, based upon data provided by Staff as well as estimates of
capital and expected operations costs. The Cost of Service model will identify future net
revenue requirements and potential payback(ROI) of resiliency investments. Preliminary
results will consist of value-for-money metrics of each infrastructure option at different levels
of property value revenue.
A sensitivity analysis will be performed on the model to identify key drivers and account for
potential uncertainty in payback.
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3.4.1. Conduct meeting with the County for review of unit prices and definition of benefits for
Financial Analysis.
3.4.2. Develop quantities and cost estimates
3.4.3. Develop Financial Analysis
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3.4.4. Develop technical memorandum
Deliverable:Technical Memorandum will include summary of the Financial Analysis
methodology including data sources used, and the analysis results obtained. Conceptual cost
estimates for 300 roadway segments plus additional roadway segments included to provide
complete coverage of the vulnerable roadway limits anticipated to be impacted by the King Tide
predicted water levels for 2045 and consolidated financial analysis for 60 proposed project areas
throughout the County will be provided. Includes the new project areas or modification of
defined project areas that Include the remaining 45 miles of 2045 Sea Legal miss+ King Tide
Unincorporated County Maintained Vulnerable Roadway Segments.
4. Task 4: Policy, Regulatory, Legal and Funding
Review of existing policies and regulations in place and how will they be impacted by proposed
adaptation improvements. Conduct evaluation and identify funding/grant opportunities. Although
the preparation of all documents will commence at the project's Notice to Proceed, the submittal of
the documents have been divided into two (2)groups. The first group that consists of the Future
Growth, Roads Liability, and Level of Service will be completed and submitted prior to the
Prioritization Exercise Workshop Meeting with the County to be conducted under Task 2.5. The
second group of documents consists of the Regulatory Issues, Funding, and Implementation will be
completed and submitted prior to the development of the Adaptation Plan to be conducted under
Task 6.
Documents that will be produced:
• Future Growth: Policy paper on population projections and growth potential and other current
or future policies impacting growth and development. Analyze existing information regarding
population projections and growth patterns related to unit allocations, growth policy, land
acquisition, and flows of recovery funds from Hurricane Irma.
• Roads Liability: Legal memorandum to include overview of road ownership and responsibility
for maintenance upgrades. Include information regarding legal and policy obligations to meet
various goals such as ongoing maintenance, reasonable access, and/or consideration of
upgrades to address future conditions. Review of case law, statutes and case studies.
• Level of Service: Legal memorandum for LOS determinations that include legal and policy
implications of establishing LOS that go beyond the traditional notion of road capacity for
traveling vehicles. Includes recommendations and pros/cons for various approaches.
• Regulatory Issues: Policy memorandum on regulatory requirements and challenges to
permitting. Review of potential rule criteria, statutory and/or Florida Administrative Code or
agency-guidelines to determine if policy changes are required to avoid constraint of road
adaptation options or delay in road project implementation.
• Funding: Policy memorandum for funding structures. Review of bonding, grants, and other
capital planning tools. A list of available grants will be provided and the benefits for
corresponding funding opportunities.
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• Implementation: Prepare draft Ordinance and/or other policy implementation framework.
Work with County Attorney's Office to manage public perceptions and expectations on future
LOS that the County may provide.
Deliverable: Documents noted above.
S. Task 5: Public and Stakeholder Outreach Plan
The public/stakeholder outreach plan will establish one (1) major schedule milestone date
throughout the overall schedule of project that will entail corresponding meetings/presentations.
Continuous public outreach will be maintained throughout the life of the project through the use of
websites, email blasts, and social media. Additional outreach activities
(meetings/workshops/briefings), as listed below,to specific groups outside of the major mile stone
date will be conducted.
The milestone date will be established after Task 1 and 2 have been completed and preliminary
proposed improvements have been considered. By this milestone date all the existing data has
been collected and the future SLR/King Tide/Storm Surge/Wind Waves/Extreme Event analysis and
projections for study years has been completed. Additionally, the vulnerability and prioritization
assessments have been completed with the identification of the roadway segments that will be
moving forward with concept design. Inundation maps, identification of critical roadways, and
preliminary concept solutions will be presented. Presentation, graphic boards, interactive GIS maps,
and modeling video clips in conjunction with handouts will be used.
In the need that a second round of Public Meetings would be required, a recommended date would
be after the Roads Implementation Plan is conducted under Task 6. By this date all legal and policy
documentation, all conceptual designs including cost benefit analysis, and adaptation improvements
plan will have been completed. Presentation,graphic boards, interactive GIS maps, and modeling
video clips in conjunction with handouts would be used.
Visioning will analyze what would the future livability in the County will be with regards to sea level
rise (SLR), roadway conditions, and potential alternative forms of transportation needed to support
certain roadway and transportation level of service for years 2040 and beyond. The Visioning scope
will not entail additional workshops/meetings and will consist of developing interactive graphics to
demonstrate the potential impacts and future conditions and how it may affect the livability of a
particular neighborhood or location. These Visioning graphics will be presented in the final
presentation to the BOCC.
Public/Stakeholder Outreach Activities:
• 3 public meetings (1 set of 3). A second round of 3 additional public meetings (1 set of 3)would
be considered as Optional Services and conducted as needed upon approval from the County.
• Briefings to commissioners as needed (A maximum of 15 meetings for all 5 Commissioners)
(Optional Services)
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• Senior Management Meeting Presentations (A maximum of 3 meetings) (Optional Services)
• 3 Deliverable review meetings with the County
• Commission workshops as needed (A maximum of 3 workshops) (Optional Services)
• Miscellaneous Outreach Meetings as needed (Optional Services) for
o A max of 1 meeting with the Tourist Development Council
o A max of 3 meetings with Realtor Association (1 series x 3 locations)
o A max of 1 meeting with the KL Federation of HOAs
o A max of 1 meeting with the Political Clubs
o A max of 1 meeting with the Env. Coalition
o A max of 1 meeting with the Last Stand
o A max of 1 unforeseen required meeting
o A max of 5 meetings for Chamber Briefings
• Coordination with USACE and FDOT D6 for studies and projects along SR 5/Overseas Highway
Deliverable:
The consultant team will be setting up meetings, run press releases, run email blasts, prepare and
manage social media, prepare an manage online survey tools, and documentation of meeting
minutes/comments. Additionally,the team will prepare Power Point Presentations, Graphics
(Boards/images), handouts, and provide GIS support.
Two (2) persons at a minimum from the team are to attend Public/Stakeholder outreach activities.
6. Task 6: Final Report and Roads Implementation Plan
Develop a regional, comprehensive, and integrated roads adaptation plan based on the results and
guidance from previous tasks. Determine schedule on when corresponding adaptation
improvements are required to be implemented.The plan schedule will be dynamic to accommodate
updates based on actual information vs projected information.The adaptation plan will he updated
to include the new project areas or modification of defined project areas that include the rema nin
45 miles of 2045 Sea Legal miss+ King Tide Unincorporated County Maintained Vulnerable Roadway
Segments.
Report to include:
1. Vulnerability Analysis and road adaptation recommendations
2. GIS Data sets and maps
3. Engineering Designs/Concept Plans
4. Policy and regulatory requirements
5. Summary of Public/stakeholder involvement engagement effort
6. Implementation Program
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Final presentation to the County(BOCC) outlining the implementation work plan recommendations and
lessons learned throughout the study process. Final presentation is to include Visioning graphics and
evaluation.
Deliverable: Final Report and Roads Implementation Plan.
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