12/15-68 Exfiltration Trench & Pond Modification GVR OOORTCC1I
h&.›..7"f. °, Kevin Madok, CPA
.p
'h ff•�`:�-•'��[% Clerk of the Circuit Court&Comptroller—Monroe County, Florida
DATE: March 3, 2020
TO: Beth Leto, Airports
Business Manager
FROM: Pamela G. HancoU 1).C.
SUBJECT: February 19th BOCC Meeting
Attached are electronic copies of the following items for your handling:
C8 Month to month Renewal Agreement with Cliffhanger Janitorial, Inc., for janitorial
services at Key West International Airport, pending issuance of a new bid proposal, receipt of bids
and award of a new contract.
C9 Jacobs Project Management Co.'s Task Order No. 12/15-68 in the amount of
$119,424.00 to develop a Stormwater Master Plan for the Florida Keys Marathon International
Airport to be funded by FDOT Grant No. G1237 (80%); and Marathon Operating Fund 403
(20%).
C21 1st Amendment with Ricondo&Associates, Inc. for Financial Consulting Services
for both Monroe County Airports renewing the Master Agreement for two years and updating the
hourly rates. Services are paid utilizing PFCs, FDOT grants and/or Airport Operating Fund 404.
Should you have any questions, please feel free to contact me at(305) 292-3550.
cc: County Attorney
Finance
File
KEY WEST MARATHON PLANTATION KEY PK/ROTH BUILDING
500 Whitehead Street 3117 Overseas Highway 88820 Overseas Highway 50 High Point Road
Key West,Florida 33040 Marathon,Florida 33050 Plantation Key,Florida 33070 Plantation Key,Florida 33070
305-294-4641 305-289-6027 305-852-7145 305-852-7145
•
MASTER AGREEMENT FOR PROFESSIONAL SERVICES
TASK ORDER FORM
Effective Date Open ,eC,t4-rt6ri1 Task Order No. 12/15-68
W`03- (9, tt30 (" Sid?*
Client Project No. & 1;5- C.3tn31D- Engineer Project No. E9Y37968
This Task Order is entered into on the effective date noted above pursuant to the "Master
Agreement for Professional Services" between Monroe County, Florida("Client") and JACOBS
PROJECT MANAGEMENT CO. ("Consultant"), dated February 15, 2017 ("Agreement"). The
Agreement is incorporated herein and forms an integral part of this Task Order.
Services Authorized - Exfiltration Trench and Pond Modification Amendment l: MTH
Stormwater Master Plan (12/15-07)
Client authorizes Consultant to perform the Services described in Exhibit A attached hereto and
incorporated herein, which Exhibit A is marked with the above noted Task Order No. and
consists of 13 page(s).
Pricing
N/A Time and Expense per Agreement and Appendix B to the Agreement.
X Firm Fixed Price of$ 119.424.00
N/A Other(Describe): • -0E l! k ���' �Y
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j3 \S`ervtces commence on Execution ASSI �% OP�NEY
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EA1::)f, a.d.2).G . BOARD OF COUNTY COMMISSIONERS
--.ATTESTLKEVIN ADOK, CLERK OF MONROE .•LINTY, FLORIDA
By
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L171 NONSUI 'ANT:
JACOBS PROJECT MANAG CLIENT CO
By
Vice President,Geographic Operations Manager
f Witness \ Title
Fi . STR AP,R Monroe County •
Page 1 of 1
Exhibit A—Scope of Work(12/15-68)
Monroe County
The Florida Keys Marathon International Airport
Exfiltration Trench and Pond Modification
Amendment 1: MTH Stormwater Master Plan
BACKGROUND
The Florida Department of Transportation (FDOT)maintains two (2) dry detention ponds
on Airport property at the Florida Keys Marathon International Airport(MTH)that treat
runoff from Overseas Highway(US 1). One pond is located on the west end of the
Airport and the other on the east end of the Airport. The FDOT ponds are located within
easements granted to the FDOT by Monroe County,the owner and operator of MTH. In
2015, Jacobs conducted a study to evaluate three options to reduce or eliminate the
footprint of the pond on the west end of the Airport. Reducing or eliminating the
footprint of this pond would free up land to become available for aviation-related
development. The study transitioned into a design project,MTH Exfiltration Trench and
Pond Modification (PSO 12/15-07).
As the MTH Exfiltration Trench and Pond Modification project progressed,the Airport
requested to fully investigate the existing drainage conditions on Airport property
including the capacity, basins, and existing structures by modeling the entire system.
This will allow the Airport to develop an overall drainage strategy that will include
County and tenant improvements and buildouts. The remaining funds in PSO 12/15-07
will be reallocated to Amendment 1 MTH Stormwater Masterplan.
An explanation of the original lump sum fee, remaining funds and proposed fee is shown
below:
MTH Exfiltration Trench and Pond Modification Original Fee $ 130,284.00
(PSO 12/15-07)
Spent to Date (Delivered 50%) $ 86,518.00
Remaining Funds in PSO 12/15-07 $ 43,766.00
MTH Stormwater Masterplan Fee $ 163,190.000
Amendment 1 Amount
(MTH Stormwater Masterplan Fee— $ 119,424.00
Remaining Funds in PSO 12/15-07)
The amendment to the MTH Exfiltration Trench and Pond Modification includes an
existing drainage investigation and modeling, two proposed drainage alternatives based
Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
on the future development shown on the Master Plan, and an airport-wide conceptual
Environmental Resource Permit application for South Florida Water Management
District.
INTRODUCTION
For the purposes of this Scope of Work, the term COUNTY refers to Monroe County,
and CONSULTANT refers to Jacobs Project Management Co. This Scope of Work
outlines the Stormwater Master Plan (SWMP) for the Marathon International Airport
(MTH). The Study Area is the Airfield property. A significant portion of the adjacent
US-1 roadway also drains into the airport, however this area will not be studied,
information on this portion of the project will be based on information obtained from
permits.
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
BASIC SERVICES
PHASE 1
EXISTING DEVELOPMENT STORMWATER MASTERPLAN
INVENTORY, STORMWATER MODEL & WATER QUALITY EVALUATION
TASK 1.1 GATHER AND EVALUATE DATA
CONSULTANT shall prepare a Stormwater Master Plan for the Marathon
International Airport (MTH). CONSULTANT shall review available
reports, findings and recommendations by prior Stormwater Master Plan
consultants and, following such review, shall identify any specific issues
or recommendations that are not covered in this scope and in the opinion
of Consultant warrant consideration. If necessary, Consultant will make
written request for any additional services not already covered in this
scope.
1.1.1 INVENTORY AND EVALUATE EXISTING INFORMATION
CONSULTANT will collect and evaluate existing available data from the
COUNTY, agencies having jurisdiction, and from other airport
consultants, past and present, via requests through the COUNTY as
necessary, including:
A. Available as-builts surveys, and/or design drawings of stormwater or
drainage facilities contained within the study area of Marathon
International Airport (MTH), including pipes, channels, swales, and
information on control structures and outfalls. Data for these
facilities will include locations, geometries/shapes, sizes, inverts,
crowns, and cross sections. CONSULTANT will conduct a limited
amount of verification under Task 1.3 FIELD DATA.
B. Existing storm drainage master plans for the entire airport or specific
areas, and all other storm drainage master plans to date.
C. Topographic and aerial planimetric maps including contours, roads,
buildings, runways,water bodies, and wetlands (as available).
D. Stormwater permits from South Florida Water Management District
(SFWMD) or COUNTY.
E. Point source and stormwater NPDES permits.
F. Inventory of pollution control devices including data on location,
size, design flow rate and maintenance. This includes swales,
exfiltration trenches, retention basins, detention ponds, drainage
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
wells, and oil-water separators.
G. Information on location, extent, quantity and type of groundwater
and soil contamination (if any). Field testing is not included. This
information will be used to note locations of areas of hydrocarbon
contaminates to avoid conflict with proposed drainage facilities.
H. Reports on Hydrocarbon and other Contamination Recovery
Programs underway. Field testing or mapping of for hydrocarbons
contamination is not included. This information will be used to note
locations of areas of hydrocarbon contaminates to avoid conflict with
proposed drainage facilities.
I. Procedures to control spills in order to minimize detrimental effects.
J. Soils data including results of percolation, exfiltration, open trench
and other tests already performed. CONSULTANT will use the U.S.
Department of Agriculture (USDA) Natural Resource Conservation
Service (NRCS) soil survey, where site specific data are not
available.
K. Available records of high-water marks, flooding, canal water levels,
control structures operation schedules and rainfall data.
CONSULTANT will obtain these available data from the COUNTY,
SFWMD and National Oceanic and Atmospheric Administration
(NOAA)National Climatic Data center(NCDC) as applicable.
L. Permit forms, regulations and requirements from governmental
permitting agencies (FAA, Army Corp of Engineers, FDEP,
SFWMD). Consultant to maintain a matrix, listing all agencies,
permit forms, significant regulations / requirements, issues to
resolve, and submittal/meeting schedule.
M. Proposed future development of MTH, including the current and
proposed airport layout plans (ALP), and information gathered from
the MTH Master Plan, and proposed tenant projects.
N. Existing monitoring programs for water quality, water quantity,
groundwater, and rainfall including the EPA multi sector permit,
SFWMD permits, COUNTY permits, and documents involving any
underground contamination.
0. Other reports and studies determined by the COUNTY and
CONSULTANT to be relevant during the data gathering phase (Task
1.1).
The COUNTY will make its best efforts to provide, or cause others to provide as may
be the case, as much of the above information as possible in electronic form to
CONSULTANT.
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
The scope does not include field verification of geometry data collected in this task,
other than surveys to be performed under Task 1.3. Consultant shall identify any
critical field verifications that appear to be warranted, including rationale. Request
for Work Authorization to be submitted if necessary, by Consultant.
A summary of the specific data gathered for the completion of the inventory will be
provided by CONSULTANT in tabular form at the end of this subtask and later
included as part of the appendices in the SWMP Technical Memorandum. Data and
permit needs will be summarized in Data,Permit and Monitoring Needs table.
Consultant shall identify any additional warranted information that is not listed above
with justification for such and shall submit request for Work Authorization if
necessary.
1.1.2 CONDITIONS SUMMARY OF EXISTING SYSTEM
CONSULTANT will use the gathered and evaluated data to prepare an
existing conditions summary comprised of the following:
A. An updated map on AUTOCAD (latest Version) of the existing
stormwater management system (SWMS) of MTH indicating inlets,
storm drains, ditches, canals, ponds, culverts, underdrains,
exfiltration systems, drainage wells and control structures based on
the base maps, and any additional mapping, either existing mapping
or new mapping as required, to ensure accurate updated map of
SWMS. Consultant shall submit request for Work Authorization if
necessary for any additional work effort.
B. CONSULTANT will also define the Primary Stormwater
Management System, for model evaluations as a map layer, based
upon topographic survey data. The minimum pipe size for mapping
will be 12-inches in diameter or equivalent. The minimum size for
modeling shall be 24 inches or greater. Note that not all pipes will
be included in the model. Modeling will include outfalls and
sufficient detail to represent the extent of major flooding problems,
based on model results. This map will also include problem area
layers and future projects layers. Problem areas include water
quantity aspects (flooding,ponding and erosion). The problem areas
will be identified based on information provided by the COUNTY.
The scale for hard copies of the base map shall be 1 inch =200 feet
(Reducible in size to 11 inch by 17 inch, at 1 inch =500 feet).
Flooding problems and problem areas shall be determined via data
review, interviews / meetings with the COUNTY, MTH Tenants,
FBOs, Service Providers, Fire Rescue and others who may have
knowledge of field conditions. "Future project" layers to be agreed
upon by the COUNTY prior to finalizing. Stormwater problems
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
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MTH Stormwater Masterplan
associated with future projects are also to be depicted in this
modeling.
1.1.3 IMPACT ON SYSTEM OF STRUCTURES CONTROLLED BY
OTHERS
CONSULTANT will analyze the data on outfall control structures (if any)
operated by ENTITIES other than the Airport, to evaluate their impact on
stormwater management at MTH. The results will be summarized and
incorporated in the SWMP Technical Memorandum.
1.1.4 AGENCY REQUIREMENTS
CONSULTANT will review and analyze existing and proposed
regulations. This will focus on the FAA, FDOT, COUNTY, FDEP, and
SFWMD; ACOE as well as any additional agencies that Consultant
identifies as warranted. From this review, CONSULTANT will prepare a
list of permits that will have to be obtained, including the timetable for
application and data analysis/needs. This list will be included in the Data,
Permits and Monitoring Needs table.
1.1.5 REVIEW EXISTING FIELD DATA
Review and summarize existing data affecting water quality and
infiltration characteristics. The airport will provide any available and
retrievable information as follows:
A. Geotechnical Reports
B. Field Compaction Test Results
C. Water Quality Data(Surface and Ground Water)
D. Pond and Channel Design and/or As-Built Data
E. Design and/or As-Built Data for Other Structural Best Management
Practices (such as Oil-Water Separators, Sediment Boxes,
Exfiltration Systems, etc.)
F. Data on Known Major Spills
G. Data on Known Contaminated Sites
H. Storm Water Pollution Prevention Plan
I. Airport Sweeping Program
J. Airport Turf Maintenance Program
K. Wildlife Hazard Management Reports
1.1.6 OBTAIN REPRESENTATIVE SOIL DATA AND PERFORM
LABORATORY TESTING AS FOLLOWS:
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
A. Additional soil sampling is not included in this scope.
TASK 1.2 BUILD COMPUTER MODEL OF EXISTING SYSTEM
1.2.1 SET UP MODEL
Hydrologic and hydraulic modeling performed in this and subsequent
tasks will be for the existing Primary Stormwater Management System
(PSMS). Items A through L (shown below) indicate the input data
applicable to the analysis of the PSMS, utilizing Version 4 of Advanced
Interconnected Pond Routing (AdICPR) to construct a one dimensional
model.
A. Tributary Area - CONSULTANT will determine tributary areas at
the base scale (1"=200').
B. Rainfall Hyteographs - CONSULTANT will develop rainfall
hyetographs for the 100-year, 72-hour; 25-year, 72-hour; 10-year,
24-hour and 2.5 inch storms based on rainfall volumes and
distribution data available from SFWMD.
C. Basin Slope - CONSULTANT will calculate an average slope for
each basin.
D. Directly Connected Impervious Area (DCIA) - CONSULTANT will
calculate the percentage of directly connected impervious area by
basin. A maximum of six land use categories (Terminal, commercial,
industrial, pavement, water\wetland, and grass) will be utilized to
develop typical DCIAs for each basin. These DCIA values for each
land use type will be based upon representative percentages for
similar areas.
E. Stage/Area/Storage - CONSULTANT will establish stage/area
storage relationships for applicable basins (where appreciable
storage exists).
F. Soils Data - CONSULTANT will estimate soil storage and
infiltration rates for each basin based on available data from the
Inventory or NRCS. Soils will be characterized as NRCS Hydrologic
Groups A,B, C and D.
G. Other Hydrologic Parameters - CONSULTANT will estimate
roughness coefficients for other parameters, such as overland flow
and initial abstraction (surface ponding), based on available data.
H. Primary Stormwater Management System (PSMS) Schematic -
CONSULTANT will develop the PSMS schematic on the base map
in Task 1.2.A. This PSMS schematic will show general flow trends
and will provide a means of identifying model output on maps at
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
scale (1"=200'). The minimum pipe size for modeling shall be
24inches.
I. Cross Sections - CONSULTANT will code cross sections for
channels, swales, and overland flow (based on LIDAR survey for
and topographic data provided by COUNTY).
J. Hydraulic Data - CONSULTANT will incorporate necessary
hydraulic data into the hydraulic model(s) for equivalent hydraulic
representation of the PSMS. CONSULTANT, in consultation with
COUNTY, will determine which data are necessary.
CONSULTANT will review data and determine what elevation to
use at the canal outfalls, for each of the design storms.
K. Tidal information — CONSULTANT will use the latest FDOT
method to determine the tailwater elevation based upon available
tidal data.
L. Sea Level Rise — CONSULTANT will run an additional model run
for the existing and two proposed scenarios based upon the
published Unified Seal Sea Level Projection, published in October
2015. The purpose of this modeling will be to illustrate the impact
of the anticipated sea level rise on the stormwater infrastructure.
CONSULTANT will provide a technical memorandum discussing the methodology
and making reference to the input data prepared. The input data set resulting from the
model set up will become part of the appendix tables in the final Technical
Memorandum. This information quantifies the hydraulic and hydrologic
characteristics of the study area and is a fundamental part of the overall stormwater
master planning effort. In addition to the input data sets provided in the appendices,
various components of the model set-up described above will be incorporated in the
final Technical Memorandum in order to provide a better understanding of the
stormwater management system and specific modifications that may be required due
to future airport improvements. The stormwater model will be delivered in digital
form(input, output and executable files).
1.2.2. CALIBRATE MODELS
CONSULTANT will review rainfall, recorded water elevation data(in and
near the airport), and high water marks for large storms occurring within
the last 10 years (with recurrence frequency of once in 10 years or more, if
possible). Consultant shall list largest storms considered; provide
discussion on how storm used for calibration was selected and describe
any caveats that need to be considered when interpreting model based on
this calibration.
Based on available data, CONSULTANT will select a storm with
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•
Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
sufficient data to be used for model calibration. CONSULTANT will
simulate the rainfall event for this storm and calibrate the model by
adjusting the hydrologic (e.g., soil storage and land cover parameters) and
hydraulic (e.g., Manning' roughness coefficient) parameters until the
predicted peak water elevations reasonably match the observed values.
CONSULTANT will prepare a technical memorandum discussing the
methodology and results.
1.2.3 SIMULATE DESIGN STORMS
CONSULTANT will simulate the 100-year, 72-hour; 25-year, 72-hour; 10
- year, 24-hour; and 2.5-inch storms using the model parameter values
obtained in calibration and produce a technical memorandum and
summary tables of peak flood stages for each design storm under present
and future land use conditions with existing hydraulics (2 scenarios).
1.2.4 IDENTIFY BOTTLENECKS
Based on the existing flooding and design storm simulation results,
CONSULTANT will identify locations where significant restrictions to
flow exist. CONSULTANT will summarize these findings in a technical
memorandum, including a map layer identifying the locations of these
restrictions (1 "=200').
TASK 1.3 FIELD DATA
1.3.1 FIELD SURVEYS
CONSULTANT will use the recently obtained survey of the airport and if
requested by the COUNTY, will obtain a survey of stormwater pipes and
related features including: inlets, headwalls, water control structures, dry
detention areas, etc.
A. Depending upon the existing available data, additional survey data
may need to be obtained. A survey allowance is included in the fee,Any
survey over the provided allowance will require additional services. If
requested by the County, the CONSULTANT will obtain the additional
services.
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
PHASE 2
STORMWATER MASTERPLAN
AND ENVIRONMENTAL PERMIT APPLICATIONS
TASK 2.1 STORMWATER MASTER PLAN TECHNICAL MEMORANDUM
2.1.1. Evaluation of Alternatives
CONSULTANT will evaluate and describe up to two different alternative
solution combinations. The analysis will be conducted for existing land
use (including all currently permitted projects) and for an ultimate
("buildout") land use. Thus, CONSULTANT will analyze a maximum of
two scenarios (2 alternative build out plans). The analysis will include
possible use of on-site dry detention basins or drainage features that could
include drainage wells or exfiltration trench. Specific dry detention basin
locations to be determined in consultation with Monroe County Airport
Staff.
CONSULTANT will apply the hydraulic models for each of the three
design storms. For these alternatives, CONSULTANT will conduct an
evaluation of:
CONSULTANT will also make an assessment of the potential for the
following stormwater management options:
A. Exfiltrating storm water into the groundwater system (wells,
exfiltration trenches).
B. Berm airfield perimeter and pump to temporary ponding areas
(considering FAA constraints).
C. Increasing existing offsite discharges, or additional points of
discharge based on expected groundwater / tidal levels and the
computed water elevations during the design storms.
D. Other possible stormwater management options, determined during
information gathering task.
The above list of stormwater management options shall be finalized and
accepted by the County Representative,prior to proceeding with analysis.
2.1.2 Develop and Analyze Stormwater Master Plan
Based on the foregoing analysis and review comments from the County,
CONSULTANT will further evaluate the two alternatives for existing and
future land use condition (i.e., 2 scenarios) including probable capital
costs, operation and maintenance costs and develop an overall plan that
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
meets the airport's levels of service and regulatory agency guidelines.
CONSULTANT will develop a list of "pros" and "cons" for each
alternative.
CONSULTANT will prepare maps showing the location of recommended
facilities (one alternative at 1"=200' scale), (one alternative) prepare a
summary table of the probable capital costs of improvements, and provide
a discussion of the SWMP in the recommendations section of the
Technical Memorandum as indicated below.
2.1.3 SWMP Technical Memorandum
Following review comments from the County on previous submittals
(tables and memos), CONSULTANT will develop a Technical
Memorandum which will address the following:
- Introduction
- Data and Methodology
- Results
- Alternatives
- Recommendations
- Cost Effectiveness
- Permitting Issues
- Implementation
The Technical Memorandum will provide the essential information on the
above topics in the text narrative in the style of an Executive Summary.
Supplementary information such as detailed tables, computer printouts and
detailed maps will be provided in separately bound appendices in hard
copy and/or digital form as appropriate.
TASK 2.2 PERMIT APPLICATIONS
A coordinated and detailed schedule of Permitting efforts, activities and
responsibilities shall be developed.
2.2.1 Develop and Analyze Stormwater Master Plan for Future Development
CONSULTANT will prepare conceptual plans, sketches, computations,
and develop the information necessary to prepare permit application forms
in accordance with the result of the consultation with the agencies having
jurisdiction, in order to:
A. Prepare an airport-wide conceptual Environmental Resource Permit
(ERP) application to the SFWMD. Non-stormwater environmental
elements (such as, wetlands, wildlife and water quality etc.) are not
anticipated to be required at this time. This scope does not include any
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
MTH Stormwater Masterplan
field data collection or research on other such non-stormwater related
environmental information as may be required for the non-stormwater
environmental (wetland or wildlife) elements of the ERP. Consultant
shall request work authorization if such data or research is required.
CONSULTANT plans to submit ERP surface water management
applications that are in conformance with jurisdictional agencies'
standard stormwater requirements and/or represent a compromise
between competing requirements (such as storage requirement by
SFWMD versus ponding limitation by FAA). The level of effort in this
scope assumes a reasonable stance by regulatory agencies (i.e., no new
rules or special criteria or expanded geographic coverage). Accordingly,
consultant anticipates having to prepare responses to two rounds of
standard Requests for Additional Information(RAIs).
2.2.2 MEET WITH GOVERNMENT PERMITTING AGENCIES
Meet with South Florida Water Management District and Florida
Department of Environmental Protection to review the water quality data,
parameters and approach.
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Scope of Services for MTH Exfiltration Trench EXHIBIT A (12/15-68)
and Pond Modification Amendment 1 -
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PHASE 3
(Future -NOT included in this proposal)
STORMWATER IMPROVEMENT CONSTRUCTION PLANS
AND ENVIRONMENTAL PERMIT APPLICATIONS
SCHEDULE-TBD
BUDGET -TBD
End Exhibit A
Assumptions and Disclaimers:
1. Client will be Furnishing Data/Information — Jacobs will reasonably rely upon the
accuracy, and completeness of the information/data provided by the Client or other
third parties.
2. A significant portion of the adjacent US-1 roadway drains into the Marathon Airport
dry detention area. This dry detention area is a shared use facility covered by an
agreement between the FDOT and Monroe County. For the purpose of this study, the
US-1 Corridor drainage area will be included solely based on information obtained
from SFWMD permits.
3. Project will use existing survey data, however conventional survey may be required
for pipes and inlets.
4. Design assumptions for exfiltration trench and/or drainage wells will be based on
existing permitted facilities. No additional geotechnical information will be obtained.
5. Responsible for Geotechnical services - In soils, foundation, groundwater, and other
subsurface investigations, the actual characteristics may vary significantly between
successive test points and sample intervals and at locations other than where
observations, exploration, and investigations have been made. Because of the inherent
uncertainties in subsurface evaluations, changed or unanticipated underground
conditions may occur that could affect total project cost and/or execution. These
conditions and cost/execution effects are not the responsibility of Jacobs.
6. Hazardous Substances could be present when on-site — Jacobs shall at no time take
title,risk of loss or ownership of the hazardous materials or wastes. Client recognizes
that Jacobs assumes no risk and/or liability for hazardous materials encountered while
performing any services associated with such hazardous waste.
7. Areas of the airport that have existing, known contamination will be shown on plans
and exhibits based solely upon publicly available information or information supplied
by Monroe County. No testing for contaminated areas is included in this scope of
work. Known contaminated areas will be shown on plans to avoid the installation of
drainage features within contaminated areas.
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