Item G6
BOARD OF COUNTY COMMISSIONERS
AGENDAITEMS~RY
Meeting Date: 21 June 2001
Division:
Growth Management
Bulk Item: Yes
No --X-
Department: Marine Resources
AGENDA ITEM WORDING:
Resolution adopting the Stormwater Management Master Plan with any revisions suggested by the
BOCC and SMMP Technical Advisory Committee.
ITEM BACKGROUND:
As part of the requirements of the Monroe County Comprehensive Plan and Seven Year Work
Program, the County is required to complete a Stonnwater Management Master Plan by 13 July 2001.
Camp, Dresser, and McKee was selected by the Commission as the firm to complete the Master Plan in
August of 1999. They have been proceeding with its completion from that time. Components of the
Plan have been reviewed along the way by a Technical Advisory Committee, which aside from
reviewing the Plan individually, has met twice as a group to review the Plan. Comments from this
group have been incorporated into the completion of the Stonnwater Management Master Plan. Scott
McClelland of Camp, Dresser, and McKee (CDM) will present the final results and recommendations
to the Board of County Commissioners.
PREVIOUS REVELANT BOCC ACTION:
August 1999 - Approval of CDM Contract to complete the Stormwater Management Master Plan
CONTRACT/AGREEMENT CHANGES:
NA
STAFF RECOMMENDATIONS:
Approval
TOTAL COST:
748.853
BUDGETED: Yes --X- No
COST TO COUNTY:
$348.853
REVENUE PRODUCING: Yes
No --X-
Year _
APPROVED BY: County Atty NA
DOCUMENTATION:
Included ~
Risk Management _NA_
of Growth Management f, '/~/~
, ~ 01
Not Required_
AGENDA ITEM,a ,.."'"
DIVISION DIRECTOR APPROVAL:
DISPOSITION:
Marine Resources
RESOLUTION NO. 2001
A RESOLUTION OF THE MONROE COUNTY BOARD OF
COMMISSIONERS ADOPTING THE STORMWATER
MANAGEMENT MASTER PLAN AND REQUESTING THAT
LOCAL AND STATE AGENCIES RESPONSIBLE FOR
STORMWATER IMPROVEMENTS MOVE FORWARD
AGGRESSIVEL Y TO IMPLEMENT THE PLAN.
WHEREAS, the 2010 Comprehensive Plan and Seven-Year Work Program
requires that the County complete a Stormwater Management Master Plan
(SMMP) by 13 July 2001; and
WHEREAS, the fIrm of Camp, Dresser, and McKee has bee working to
complete the Stormwater Management Master Plan and has reviewe9 the Plan with
the Commissioners at its 21 June regular BOCC meeting; and
WHEREAS, the Draft Stormwater Management Master Plan has been
reviewed by the SMMP Technical Advisory Committee including relevant local,
State, and Federal representatives, comments have been made, and have been
addressed.
THEREFORE, BE IT RESOLVED BY THE BOARD OF COUNTY
COMMISSIONERS, MONROE COUNTY, FLORIDA THAT:
1. said Board adopts the Stormwater Management Master Plan, with any revisions
that the Board may agree to at the 21 June 2001 BOCC meeting; and
2. said Board directs staff to implement the Plan on County owned properties and
road rights-of-way; and
3. said Board requests that staff work with other agencies such, as the Florida
Department of Transportation, to see the Plan implemented on their properties
and road rights-of-way; and
4. said Board request that staff begin work as necessary to implement other
recommendations made in the Stormwater Management Master Plan.
BCOI0611.doc
06101101 10:57 AM
Marine Resources
PASSED AND ADOPTED by the Board of County Commissioners,
Monroe County, Florida at a regular meeting of said Board held on the 21 st Day
of June , A.D., 2001.
Mayor Neugent
Mayor .'Pro Tem Williams
Commissioner Spehar
Commissioner McCoy
Commissioner Nelson
BOARD OF COUNTY COMMISSIONERS
MONROE COUNTY, FLORIDA
BY:
MA YORlCHAIR PERSON
(SEAL)
AITEST:
DANNY 1. KOLHAGE, CLERK
BY:
DEPUTY CLERK
BCOI06I1.doc
06101101 10:57 AM
:\1onroc lOlll1l:
SlOrmw3lCr Mana!!CmCnl Master Plan
E.\cl'ut1\C SUIllIll;JJ"\
Monroe County
Stormwater Management Master Plan
Executive Summary
Monroe County, Florida
The Florida Keys
Introduction
Monroe County consists of approximately 1.2
million acres, the majority of which are
submerged lands under state or federal
jurisdiction. Excluding the mainland areas,
Monroe County encompasses about 65,400 acres
along the Florida Keys including the
incorporated areas of Key West, Islamorada,
Layton, Key Colony Beach and Marathon. The
Florida Keys consist of 38 main keys connected
to the mainland through Dade County along US
Highway 1 (referred to as US 1).
Monroe County is required by their adopted
Year 2010 Comprehensive Plan (Comp Plan) to
prepare a Stormwater Management Master Plan
(SMMP). The purposes of the SMMP are to
assess the adequacy of existing systems,
prioritize stormwater management needs for
each island, identify regulations and policy
needs, and develop a plan to finance the
CDM Camp Dreuer &. McKee lnc.
00cumen11
1'1"'\ N>\
1I1"P.... M.to"L....mb<>
~
lI.'ng K,i t..J"l'n ~ ~ndI<'\' K""
"' L'; ...............
Mar.lbm ~ Low.. M.....-umb<>
~N"nv88ch
construction, operation and maintenance of
required facilities. The geographic area of this
project consists of the islands in the County (the
Florida Keys), which are traversed by US 1. The
figure above shows the study areas for the
SMMP.
Several terms will be used to characterize the major
areas of the Keys:
The Upper Keys begin with the Ragged Keys of
Biscayne National Park to the north and run to
Upper Matecumbe (Teatable Key Channel) to the
southwest.
The Middle Keys include the islands south and
west of Lower Matecumbe to Marathon (Seven
Mile Bridge).
The Lower Keys include Big Pine Key through Key
West.
The Florida Keys
According to 1999 population data, the Upper
Keys have the largest population at about 49,200.
The Middle and Lower Keys have almost the
same population at about 36,000 each. The
largest stormwater study area population
appears to be Key Largo, followed by Marathon.
In 2010, the Upper Keys will still have the largest
population at over 52,500, followed by the Lower
Keys at about 39,100 and finally the Middle Keys
at about 28,400. The largest study area
populations are Key Largo and Marathon as in
1999.
The largest population growth for permanent
residents between 1999 and 2010 is projected to
be in Cudjoe Key at 15 percent over the 11 years,
followed by Bay Point Key at 12.3 percent and
Big Pine Key at 11.3 percent. Average
population growth for permanent residents will
be only 0.7 percent, due to incorporation. There
is expected to be an overall loss of 3 percent in
the seasonal population due to incorporation.
CDM Camp Draaer & McKee Inc.
0clc:tlrNn11
\1ollml' COUIl!\
SlormwalC'r Mana~C'I11C'nt \1astL'r Plan
EXC'l'Ull\C' Summar~
Due to their location, the Florida Keys possess
unique conditions not found elsewhere in the
United States. This has lead to the development
of a variety of interconnected, tropical marine
ecosystems. There are both climatic and biotic
variations within the Keys that extend over one
degree of latitude (-24.5 to 25.5 N) and almost
three degrees of longitude (-80.2 to 82.9 W).
The designations of Upper, Middle and Lower
Keys do have some natural constraints that affect
the near shore marine and terrestrial
environments. The Upper Keys form a fairly
continuous barrier between the coastal waters of
the mainland on the west and north sides of the
Keys (Florida Bay, Barnes, Blackwater and Card
Sounds, and Biscayne Bay; usually called
'bayside") and those of Hawk Channel and the
Straits of Florida on the east and south of the
Keys ("Oceanside"). The Middle Keys have large
passes that allow a considerable exchange of
water. The Lower Keys have an intermediate
tidal exchange from one side to the other. The
waters to the north here are more properly
considered Southwest Florida Shelf waters rather
than part of Florida Bay because they are
influenced by Florida Bay and the Gulf of
Mexico.
Table ES-l provides a breakdown of the acreage
and percentage of land uses based on the
existing database provided by Monroe County.
About 75 percent of the land is categorized as
Forest/Open, Urban/Open or Water/Wetland.
The next highest land use is low density
residential (9 percent). .The rest of the land uses
account for about 18 percent of the total land in
Monroe County.
Table EX-2 shows the future land uses for
Monroe County based on total build-out. About
72 percent of the future land use acreage is
Forest/Open, Urban/Open and Water/
Wetland. There will be increases in Medium and
High Density Residential Land Uses. These
2
increases change the nature of stormwater runoff
from the Keys under future conditions.
Table ES-l- Monroe County Existing Land Uses
Land Use
Forest Open
Urban Open
Agriculture /Pasture
Low Density Resid.
Medium Density Resid.
High Density Resid.
Commercial
Industrial
Water /WetIand
FOOT Roads
Total
Total %
11,764 5,925 15,362 33,051 37.8%
457 923 336 1,717 2.0%
5 33 3 41 0.0%
1,688 3,700 2,370 7,758 8.9%
994 450 737 2,180 2.5%
264 390 290 945 1.1%
815 1,538 675 3,028 3.5%
54 55 69 178 0.2%
21,987 6,082 2,721 30,790 35.2%
702 566 370 1,637 1.9%
1,206 325 889 2,421 2.8%
2,914 636 96 3,646 4.2%
42,849 20,623 23,919 87,390
Table ES-2 - Monroe County Future Land Uses
Land Use Total %
Forest Open 6,666 659 10,841 18,166 20.8%
Urban Open 6,374 4,718 4,116 15,209 17.4%
Agriculture /Pasture 13 9 3 26 0.0%
Low Density Resid. 1,883 1,955 1,114 4,952 5.7%
Medium Density Resid. 1,657 3,165 1,969 6,791 7.8%
High Density Resid. 437 569 858 1,863 2.1%
Commercial 1,120 1,404 952 3,476 4.0%
Industrial 106 27 0 133 0.2%
Water/Wetland 20,216 6,437 2,650 29,303 33.5%
FOOT Roads 665 617 386 1,669 1.9%
1,077 337 866 2,280 2.6%
2,636 725 164 3,525 4.0%
42,851 20,623 23,919 87,392
Over the last 40 years, especially in the last 10,
the Florida Keys ecosystems have been of
concern to governmental, scientific and public
interests. With creation of the Jolm Pennekamp
Coral Reef State Park in 1960, the unique
CDM Camp Dresser &. McKee Inc.
Document,
\-Ionmc Count \
SlOrIl1\\ 3lcr Mana~cmcnt \Ia,ll'r Plan
Exccutl \ l' SUlIlmar\
environment of the Keys was confirmed. Since
that time, the deterioration of the near shore and
reef environment has been well documented
with the decline of corals, loss of grass beds, and
increase in water pollution. While most studies
have identified wastewater impacts as the major
controllable source of pollutants affecting the
environment, stormwater runoff has also been
identified as a significant source. One of the
purposes of the SMMP is therefore to identify a
plan to reduce the stormwater runoff component
of pollution within the Keys.
Goals and Objectives
Based on public input and the 2010 Comp Plan,
the following is a list of recommended goals and
objectives for the Monroe County Stormwater
Management Master Plan:
Goal 1 - The SMMP will identify, prioritize and
recommend remedial improvements for the
significant water quality related problem areas
within the unincorporated areas of the County.
Goal 2 - The SMMP will recommend actions that
will reduce the sediment and nutrient loading of
near shore waters resulting from runoff.
Goal 3 - The SMMP will review existing
regulatory requirements for the control of new
development related to flooding and water
quality and will recommend improvements as
needed. As a related issue, the SMMP will
review existing enforcement activities and
recommend changes necessary to improve the
compliance of existing or new regulations.
Goal 4 - The SMMP will recommend activities
related to the stormwater management of future
growth that will be expected to result in no
increase in sediment or nutrient loads to near
shore waters.
Goal 5 - The SMMP will strive to use
nonstructural and source controls to achieve a
3
e.'
. ,--." --.' . ..
.~, . .'
reduction in existing sediment and nutrient
loads. When necessary, the SMMP will
recommend structural controls associated with
the publicly owned infrastructure.
Basics of Stormwater Management
When rainfall falls on soil or undeveloped land
covered with vegetation, some of the rainfall
penetrates into the ground (infiltration) until the
soil is saturated. The remainder runs off the land
into natural storage areas (wetlands and
depressions), conveyances (small creeks and
ditches) or near-shore waters. During large
storms, the limited natural storage and
conveyance system can back up causing the
flooding of normally dry land.
Three major changes to runoff may occur with
increased development in the Florida Keys.
First, the amount and nature of the runoff can
change. Development increases the amount of
impervious area such as roofs, driveways,
parking lots, etc., which in turn increases runoff
volume. In the same manner, the runoff peak
flow may get larger, the time of the peak from
the start of the rainfall event may shorten and
runoff induced velocities may increase. The
overall effect is that increased development
creates more runoff water in less time.
Secondly, increased urban development (both
residential and commercial) can place houses
and buildings in areas that naturally flood
during certain times of the year. With increased
runoff, the flooding increases and flood-prone
areas are inundated for longer times. With
residential or commercial structures now in
places where flooding historically occurs, the
increased runoff leads to potential citizen health
and safety concerns.
Thirdly, urban development changes the nature
and volume of pollutants carried by runoff.
Runoff from development can carry man-
induced pollutants such as sediments, fertilizers,
CDM Camp Dreuer & McKee lnc:.
Oocument1
\!onrol' Coun!\
Storm water Mana~emenl \1aSIL'r Pla;l
EXL'l'lII1\l'SUmrnan
detergents (from car washing, etc.), automotive
fluids, metals, and pesticides.
The control of flooding caused by excess
stormwater runoff is actually simple in concept
yet difficult in practice. There are only two ways
to control flooding: (1) increase the conveyance
of stormwater away from the flooded area, (2)
store the runoff permanently (retention) or
temporarily (detention) until the conveyance can
carry away the excess volume, and 3) a
combination of storage and conveyance.
Historically, the strategy of choice was to
increase the conveyance capacity by widening
channels and up-sizing culverts so that water
flows to the near shore waters. Environmental
regulations, such as the Florida Water Resources
Act of 1972, began a shift toward water
management with more focus on storage to
attenuate and treat runoff.
With the increase in
land and
construction costs,
municipalities have
added source
controls to address
flooding. "Source
controls" refers to a
group of best
management
practices (BMPs)
that control or
reduce the problem
at the source.
Source controls
related to flooding
include methods to
reduce runoff: minimization of impervious areas,
land use controls, porous pavement
requirements, water conservation measures (e.g.,
xeriscape), vegetated buffer strips, downspout
diversion, etc. These BMPs attempt to reduce the
runoff peak or volume so that historically
sufficient conveyance and storage systems can
4
.
accept the runoff. Unfortunately, these types of
BMPs are generally not sufficient by themselves
to return post-development runoff to pre-
development levels. Nevertheless, source
controls can reduce the costs for structural
improvements downstream by decreasing the
runoff and removing pollutants.
Developing land changes the type and quantity
of pollution. Housing development increases
fertilizer, pesticide and even household chemical
pollutants. Commercial development can
increase these and other more exotic pollutants.
Of all the pollutant sources, however, the
greatest is vehicular. Engines drop oil, grease,
antifreeze and fuel. Automobiles yield metals
such as selenium (tires), copper (brakes) and
chromium into runoff. Engine emissions place
pollutants (gaseous and particulate) into the
atmosphere only to be pulled into raindrops and
become part of runoff. Therefore, development
not only increases the volume of runoff but also
increases the type and severity of pollution
carried by the runoff.
Similar to flood control, runoff quality can be
controlled using source controls as well as
structural improvements. Source controls reduce
the amount of pollutants from getting into runoff
in the first place. While source controls can be
effective in reducing pollutants in runoff, a
mixture of source controls and structural
improvements to treat runoff may be needed to
improve existing water quality problems and
control future pollutant discharges.
Structural controls, on the other hand, provide
constructed facilities that allow stormwater
runoff to be physically, chemically and/ or
biologically treated. Physical treatment is
generally for sediments and other particulates:
runoff is allowed to slow down enough for
gravity to settle sediment to the bottom of the
facility (inlet baffle boxes, sediment sumps, and
ditch-block weirs) or runoff is subjected to
CDM Camp Dreuer & McKee Inc.
Docunentl
"vlonroc COllllt\
Storm" atcr Mana~cmcnt \1a\ICr Plan
E"ccutl\ c SUlTllTlar~
centrifugal forces to separate sediments from
water (swirl concentrators). Chemicals can be
added to runoff to increase the coagulation of
pollutants and help the settling out of the
resulting particulates. Biological treatment
allows plants to uptake nutrients for growth
thereby reducing the opportunity for the
nuisance algae to grOW.
Contrary to flood control, runoff quality should
be treated during small-scale, frequent storm
events. Studies of stormwater runoff have
shown that a large portion of pollutant washes
off of developed lands during the first flush of
rain. This indicates that treatment of the first
flush of rainfall will control most of the runoff-
induced pollutant loading. Consequently, many
governments that have stormwater quality
ordinances define design criteria for stormwater
treatment facilities based upon how much of the
first inch or so of rainfall must be treated. For
example, SFWMD requires the treatment of the
equivalent runoff from the first 1.25 to 2.5 inches
depending on the BMP type.
Concerns in the Florida Keys
Based on historical reports, staff input and public
comments, there are two types of stormwater
concerns in the Florida Keys: water quality and
nuisance flooding. A survey of citizens present
at recent public meetings on the SMMP ranked a
number of stormwater-related issues from most
important to least important:
Issue
Water Quality Protection/Improvement
Development Controls
Enforcement of Existing Regulations
Flooding
Costs
Operation & Maintenance
Recreational Opportunities
Rank
1
2
3
4
5
6
7
A list of stormwater problem areas was also
identified and studied for potential
improvements. The problem areas were ranked
5
.'
, ,
. ,
'<.. "
-"', ~ . ;-
. ~,..".".'
on the following criteria: flood severity, water
quality benefits from improving the problem,
expected growth of the study area, overall
benefit to the county (Le., does the problem area
affect many citizens?), and historical priority
assigned. Many of the problem areas were
investigated and found to be on private
property .
Existing Stormwater System
Given the nature of the Florida Keys and the
problems encountered, the first issue to be
addressed is related to the existing stormwater
system. A review of permit files and existing
studies was completed, and confirmed with field
studies of stormwater systems. In all, only 254
structures were located, of which over two-thirds
~~;;'~~~:'
'.i~~"--"
~ .
contained stormwater quality treatment system
and one-quarter contained wells. Through the
Keys, the major stormwater system consisted of
drainage systems along US 1, although many
portions of this road had no stormwater controls
at all. Ten residential areas were visited to
review the types of stormwater controls that
were present. Based on this survey, only 10 to 20
percent of residential areas in the Keys have -
stormwater systems of any type, even though
many of the residential roads are paved. Not
surprisingly, 40 percent of the residential areas
visited had nuisance flooding concerns related to
standing water (Le., no structure flooding). Most
of these areas have vegetated areas along or near
the residential roads; however, it does not
CDM Camp Dresser & McKee Inc.
Oocument1
\lonroL' COUl11\
Stormwater Managcment Masler Pla;l
EXCCU11\ L' Summan
appear that they are designed to control
stormwater.
Recommendations
In order to address the problems and concerns
identified and to achieve the objectives of the
SMMP, the following actions are recommended.
- Monroe County should adopt a 95 percent
treatment requirement and strictly enforce its
application on new development and significant
redevelopment. The 95 percent treatment
requirement means that new developments
must remove 95 percent of the annual
average load of pollutants from developed
property. For the purposes of this plan, the 95
percent standard means 95 percent capture of
the mean annual rainfall volume. Through
modeling of stormwater pollutant loading for
future growth, it has been shown that this
requirement will achieve Goal 4 (no increase
in future loads). The consequences of this
requirement are two-fold. First, the County
should review each new development to
confirm that the 95 percent requirement is
met and through construction inspection,
confirm that the stormwater systems are
being built according to the approved design.
Second, the County should work with
existing residential and commercial
developments that plan to redevelop. Once
reasonable stormwater retrofits are defined
that meet the 95 percent rule, the County
should allow redevelopment, as the
redeveloped property will provide water
quality benefits.
Monroe County should implement an operation
and maintenance (O&M) program for public
storm water management systems and inspection
of private systems. The O&M program
adopted by the County should include
routine maintenance for critical stormwater
systems as well as routine inspection of
others. Furthermore, private stormwater
6
systems should receive proper maintenance
with annual certification by owners.
- Monroe County or South Florida Water
management District (SFWMD) should develop a
stormwater well inventory. Runoff from both
public and private properties is discharged
into drainage wells. Unfortunately, very
little is known about the location, tributary
area and land use draining to each well.
While drainage wells provide significant
stormwater flood relief, the benefits and _
impacts on water quality are not well
documented because of the lack of
information.
- Monroe County and SFWMD should enforce
existing regulations through inspection and as-
built drawings. The review of existing federal,
state, regional and local stormwater
regulations confirmed that there are
sufficient regulatory controls defined today.
However, field inspections confirmed that
many of the permitted systems were not built
according to the permit and/ or are not being
maintained. County and water management
district inspectors should also be trained in _
sediment and erosion control.
- Monroe County should pay special attention to
marinas with respect to stormwater runoff.
Many of the stormwater quality problem
areas identified in the Florida Keys were
related to private marinas. Field inspections
identified major problems that were related
to runoff from material storage areas,
unpaved areas, and lack of stormwater
controls prior to discharge. The County
should encourage the state to continue the
Clean Marina Program, and marina retrofits
should be reviewed on a case-by-case basis to
meet the 95 percent rule.
- Monroe County should encourage redevelopment
and retrofit with reductions in impervious areas.
CDM Camp Dresser & McKee Inc.
Document'
\lonwl' COlln!\
Stormwaler Mana)!CmCnl Mastcr Plan
E\l'CU11\L' SUllllllal~
Many of the existing stormwater problems
occur because development has increased the
imperviousness of the area. Increased
imperviousness changes the volume, timing,
peak flow, and pollutant content of
stormwater runoff. The County should offer
incentives for the reduction of impervious
areas using vegetated and landscaped
swales, rain gardens, bio-filters, and pervious
pavement.
Monroe County should encourage the use of
vegetated buffers and conservation measures. As
noted previously, the major problems
encountered in the Florida Keys are due to
the lack of stormwater controls prior to
discharge. Simple, yet powerful, controls
consist of vegetated buffers such as swales,
rain gardens, bio-filters and bio-retention.
Also, by conserving water through the use of
runoff for residential irrigation reduces the
volume of runoff and limits the pollutant
loading discharged. Conservation measures
such as cisterns, rain barrels and xeriscape
are particularly effective.
Monroe County should require all vegetated
systems such as swales, medians, etc., to be
planted with native vegetation to minimize
maintenance. Planting of vegetated systems
with native plants will maintain the beauty of
the Florida Keys' natural environment as well
7
as minimize special maintenance. Public and
private construction and development
should be encouraged to use salt-tolerant
plants near shoreline spray areas and other
native plants away from the coast line.
.
With the support of federal, state, and regional
governments, Monroe County should implement
the recommended retrofit and rehabilitation
projects to address existing problem areas,
Twenty-two retrofit and rehabilitation
projects have been identified to address
problem areas within Monroe County. The
projects include improvements to be
implemented by the Florida Department of
Environmental Regulation (Heritage Bike
Trail), Florida Department of Transportation
(along US 1), Monroe County and Marathon.
Three additional projects on private property
have been considered as well: K-Mart in
Marathon, Key Largo Trailer Village, and the
Safe Harbor area on Stock Island. These
represent example projects to illustrate the
possible retrofit or rehabilitation of private
property .
.
Where possible, FDOT should include stormwater
controls as part of all Florida Keys projects,
including bridge entrances and exits. A review
of existing designs and a field survey of
FDOT systems showed that many areas have
CDM Camp Dresser & McKee Inc.
Document1
Monroe Coun!~
Stormwatcr Managcmcn! Maslcr Plan
E\ccutl\'C SUlllmar~
Upper Keys discharge uncontrolled
stormwater that contain significant sediment
loads. Since the FOOT stormwater system is
the major (and in some study areas, the only)
stormwater controls available, stormwater
quality improvements will also result in
improvements to near shore waters.
The SMMP provides a number of benefits related
to the goals and objectives of the plan. First, the
SMMP provides retrofit and rehabilitation
projects for all of the identified public problem
areas within the Keys. These projects will
address both flooding and water quality
improvements. Second, the implementation of
the SMMP will also improve maintenance
activities for existing and future stormwater
management facilities. Third, the SMMP
recommends a number of programs that will
minimize the runoff pollutant loading to the near
shore waters from future developments and
eventually will reduce the loads from existing
sources.
SMMP Costs and Funding
The costs to implement the SMMP fall into two
categories: (1) capital costs for the construction
of recommended improvements, and (2) ongoing
costs for regulatory and maintenance related
activities. Tables E5-3a (Monroe County) and 3b
(Marathon) lists the retrofit and rehabilitation
projects to be completed on public property in
Monroe County and Marathon. An additional 12
projects are recommended for FDOT and FDEP
(Heritage Bike Trails). These recommendations
address all of the public problem areas identified
historically and by the public related to
stormwater runoff. Three private retrofit
improvement projects are provided as examples
of the effort needed for redevelopment of private
property. The total cost for these projects is
approximately $254,000 for unincorporated
Monroe County and $196,200 for the City of
Marathon. Funding for the Monroe County
projects can be achieved through state and water
8
management district grants and existing local
infrastructure sales taxes.
For the FOOT and FDEP (Bike Trails), the SMMP
recommends improvements on approximately
17.5 miles of the total 107-mile-Iong US 1
(Overseas Highway). Of the 107 miles,
approximately 18.9 miles are bridges and 16.1
miles are in Key Largo (curb & gutter and
swales). Thus, approximately 54.5 miles (75
percent) of US 1 are not addressed in this SMMP.
Using the average cost per mile for the
recommended FDOT /FDEP improvements, the
projected cost for improvements to the 54.5 miles
would be about $13.5 million, resulting in a total
FDOT /FDEP rehabilitation cost of $18.5 million
if all of US 1 were improved, excluding Key
Largo.
For ongoing costs for Monroe County, it has
been estimated that an additional $75,000 to
$110,000 per year for the first three years and
about $90,000 per year thereafter are needed to
improve regulatory compliance and increase
maintenance activities. These costs can be
phased over a number of years to confirm the
effectiveness of the programs.
Finally, related to costs, the 1992 "Water Quality
Protection Program for the Florida Keys Natural
Marine Sanctuary" report estimated a cost of
over $530 to $680 million to retrofit all urban
Monroe COlln!\
Stormwalcr Mana)!emen! \1aSler Plar~
EXCCUll\ e SlIllllllaf\
lands in the Sanctuary. Using the costs identified
in this SMMP, total retrofit of urban land would
cost about $465 million. However, this SMMP
recommends that such retrofit to the 95 percent
standard should occur as redevelopment is
economically feasible.
Implementation of the SMMP
As with costs, implementation of the SMMP can
be categorized by capital improvements and
ongoing governmental improvements. For
implementation of the capital improvements,
Monroe County should coordinate efforts with
other ongoing construction efforts such as
FDOT's Five Year Plan and the Monroe County
Sanitary Wastewater Management Plan. That is,
improvements should coincide with other
construction projects so local disturbances occur
only once and construction costs are minimized.
For the overall plan, it is recommended that
Monroe County implement the SMMP over the
next four years. The suggested schedule for
activities is provided in Figure E5-3. The
schedule shows the responsibilities for each
participating agency including Monroe County,
city of Marathon, FOOT and FDEP. The overall
program can be extended a few years depending
on funding and construction coordination.
Table ES-3a - Summary of Retrofit and Rehabilitation Costs for Unincorporated County
Problem Area Study A~ea Estimated Cost
El Prado Circle on Coppitt Key Big Coppitt $89,700
Card Sound Road (SR 905A) Key Largo $89,700
Marathon Government Center Marathon $29,900
Burton Drive at US 1 in Tavernier Key Largo $11,300
Jo-Jean Way in Tavernier Key Largo $29,900
Veterans Park in Little Duck Key Marathon $3,500
Total Estimated Costs $254,000
COM Camp Dresser & McKee Inc.
Document1
9
.'
"
.. -.. ,~
~,.,.".'
\lonrnc Coun!\
Slormwalcr Mana)!emcn! Ma\ler Plan
Exccutl\'C Summar~
Table ES-3b - Summary of Retrofit and Rehabilitation Costs for City of Marathon
Problem Area Study Area Estimated Cost
Marathon $22,400
Marathon $147,900
Marathon $3,500
Marathon $22,400
Total Estimated Costs $196,200
Table ES-3c - Summary of Retrofit and Rehabilitation Costs for FOOT and FDEP
27th Street
Sombrero Isles
24th Street
52nd Street (Palm Place) - Marathon
Problem Area
Indian Key Bayside Parking
Ocean/Bayside Parking at MM 77.5
Bayside Parking at MM 66
Sombrero Beach Road
Rockland Channel to Shark Channel
Big Coppitt Boat Ramp
Boca Chica Channel to Rockland Channel
North Harris Channel to Park Channel
Bow Channel to Kemp Channel
Saddlebunch Bike Trail - Big Coppitt
Bahia Honda Bike Trail
Saddlebunch Bike Trail - Saddlebunch
Study Area
Ram Rod Key
Lower Matecumbe
Long Key
Marathon
Big Coppitt
Big Coppitt
Boca Chica
Lower Sugarloaf
Cudjoe Key
Big Coppitt
Bahia Honda
Saddlebunch
Total Estimated Costs
Estimated Cost
$2,100
$2,600
$16,900
$536,400
$543,500
$43,000
$43,000
$418,000
$1,045,100
$678,100
$912,000
$250,800
$5,577,200
cDM Camp Dresser & McKee Inc.
10
Documenl1
Monroe COlln!~
Stormwalcr Mana~ement Maslcr Plan
E\ccutl\c Surnmar~
Figure E5-3 - Suggested Implementation Schedule for SMMP.
Responsible Agent 2001 2002 2003 2004
Pro"eet J A SON D J F M A M J J A SON D J F M A M J J A SON D J F M A tv
Monroe Coun Pro'eets
Marathon Government Center
Park
Veterans Park
Card Sound Road
Burton Drive in Tavernier
O&M Plan
Education on Source Controls
52nd Street
24th Street - Boot Ke Harbor
27th Street
Sombrero Isles
Rockland to Shark
Boca Chica to Rockland
North Harris to Park
Bow to Kern
FDEP Pro. eets
Saddlebunch Bike Trail - Bi
Bahia Honda Bike Trail
Saddlebunch Bike Trail - Saddlebunch
cDM Camp Dresser & McKee Inc.
11
llocumenl1