CN-370000-BS135-T10CO7.pdf

ATTACHMENT D – TASK ASSIGNMENT CHANGE ORDER FORM

DEP CONTRACT NO. BS135

Task Assignment Number: ____10______

Date: ___7/27/2022________

Change Order No.____7______

Contractor Name:

___Mott MacDonald Florida, LLC_____________ ___

Contractor Representative: __James Johnson___________ ______

Phone: __850-688-9166______

DEP Contract Manager: __Genita Alexander______________________

Phone: __850-245-8021______

Description of Change (Use Additional Sheets if necessary):

A scope revision is requested to extend intermittent design deliverable dates due to unforeseen delays with data collection in the field that is necessary for design. A revised scope with an updated deliverables schedule is attached.

CHANGE IN TASK AMOUNT

Item Fee Schedule Cost Reimbursement

Total

Original Task Amount: $457,088.00 $457,088.00

Task Amount Prior to this Change Order: $852,520.68 $852,520.68

Net Increase/Decrease in Task Amount: $0.00 $0.00

Task Amount with all Change Orders: $852,520.68 $852,520.68

CHANGE IN TASK TIME

Original Task Completion Date: March 31, 2022

Completion Date Prior to This Change: February 10, 2023

Net Increase/Decrease in Task Period: 0 days

Completion Date with all Change Orders: February 10, 2023

CONTRACTOR

FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION

7/27/2022

Contract Manager David Skipper

Date Project Manager Jeffrey A. Carter

Contract Manager

Date

Date

Genita Alexander

APPROVED:

Cost Center Administrator Date cc: DEP Procurement Section (MS93), Bureau of Finance and Accounting (MS78) – 2 copies Contract No. BS135

Jeffrey A. Carter Digitally signed by Jeffrey A.

Carter Date: 2022.08.03 12:52:55 -04'00'

Genita Alexander Digitally signed by Genita Alexander Date: 2022.09.02 14:30:34 -04'00'

Adam Blalock Digitally signed by Adam Blalock Date: 2022.09.06 08:59:58 -04'00'

Scope of Work for: Change Order #7

Rookery Bay National Estuarine Research Reserve

Henderson Creek Flatwoods & Low-water Crossing

Hydrologic Enhancement Project: July 2022

Background: The FDEP reached out to Mott MacDonald (MM) to provide the following services under the BS135 statewide contract.

Project Area Significance: Forested and non-forested coastal freshwater wetlands were bisected by a roadway and powerline right-of-way before the area was designated a reserve. The roadway and right-of-way are necessary for infrastructure and resource management access, both from Florida Power and

Light and the NERR staff. The roadway alters forested wetland hydrology by collecting and channeling water away, causing a drying of hydric flatwoods and invasion of exotic plants. The shell-capped right-of-way has six low water crossings in disrepair that facilitate flow across the non-forested marsh system.

Current hydrological and habitat conditions are altered and facilitate invasion by exotic plant species such as melaleuca, Brazilian pepper, ear-leaf acacia, and

Australian pine. Restoration of historical flow patterns will benefit 1,300 acres of wetland habitat. Hydrological modeling as part of the engineering and design of

Phase I will determine if additional low water crossings are warranted. Phase I will also design and permit the low water crossings and relocation of the dirt roadway to a fence-line. Restoration of the current roadway to hydric flatwoods and other construction will occur in Phase II.

Project Description: The project is located at the Rookery Bay National

Estuarine Research Reserve (RBNERR) in Collier County, Florida approximately 10 miles south of the City of Naples. The entrance to the RBNERR is located off

Tower Road approximately 0.2-miles west of Collier Boulevard (SR 951). The

RBNERR encompasses an area of approximately 110,000 acres comprised of a mixture of land and water that is part of the Everglades ecosystem. The Rookery

Bay National Estuarine Research Reserve is managed by the Florida Department of Environmental Protection's (FDEP) Coastal Office in cooperation with the

National Oceanic and Atmospheric Administration (NOAA).

Approximately 1,300 acres of state-managed wetlands within Rookery Bay

National Estuarine Research Reserve (RBNERR) lying west of Tower Road have experienced hydrological alteration from two roadways identified as Trash Road located at the east end of the RBNERR and Powerline Road located within an existing Florida Power and Light (FPL) easement.

Trash Road contains deep ruts and low spots where sheet flow is intercepted and concentrated in channels. Therefore, the water is redirected westward to the coastal wetlands and away from the hydric pine flatwoods to the south. This has caused a subsequent drying of the wetlands down gradient in the hydric pine flatwoods and allowed exotic invasive plant species to invade.

Bottlenecked overland flow in wetlands from six undersized low water crossings

(LWCs) along Powerline Road, in addition to upstream urbanization, has caused degradation of habitats to the northeast of Powerline Road. Upstream inflows have changed due to local housing development storm water management and changes in runoff patterns. Wetland ponding and sheet flow which formerly began near the onset of the rainy season in July are now delayed up to a month because of mandated retention and treatment by the developments. The effect has been to shorten the hydroperiod of the project area and allow for tidal habitat encroachment. Restoration actions will enhance wildlife habitat and water quality by extending the period of flooding in hydric flatwoods, attenuating nutrients, excluding exotic plant species intolerant of flooding, and facilitate connectivity across the coastal wetland continuum. The six existing LWCs along

Powerline Road are degraded and crumbling due to heavy use and age and restrict water flow to the southwest.

RBNERR is providing this narrative to facilitate a request for proposal to include design services and permitting services to remove and relocate Trash Road to restore historical sheet flow patterns and upgrade the existing six low water crossings along Powerline Road to improve the passage of water to restore wetland hydroperiods. Upgrade of LWC’s may include replacement with a combination of large box-culverts and/or small bridge-spans. The project includes the following components as described below and depicted on Figure 1 – Project

Area Map:

Figure 1

• Filling and regrading approximately 3,771-feet of the existing Trash Road.

• Relocating Trash Road to extend approximately 3,360-feet along the northern fence line and southward along an existing wetland.

• Determining the length and/or number of low water crossings along

Powerline Road to effectively restore wetland hydroperiods by updating and modifying the existing integrated surface water model originally prepared for the RBNERR.

• Designing new low water crossings based on the results and conclusions determined from the hydrologic model. At a minimum the project will include removing and replacing the six existing low water crossings with upgraded LWC infra-structure and/or with box culverts or small bridge-spans. All work must meet ratings to accommodate Florida Power and Light

(FPL) heavy Trucks and other equipment. However, the lengths of the six existing low water crossings could be increased or additional low water crossings could be added.

• Installation of bridge at northernmost extent of existing pictured section of

FPL power-line access road is needed to provide land management

(including prescribed fire and response to instances of wildfire) access northward across a small creek to continuation of the FPL power-line access road and easement.

The new low water crossing will be a long-lasting durable material comprised of interlocking blocks to provide a more durable driving surface that must meet the needs of access for FPL power-line maintenance trucks.

The 6-existing low-water crossings, existing Trash Road, and the proposed area to relocate Trash Road are located within and adjacent to wetlands and surface waters. Therefore, the scope of service includes quantifying the area of wetlands and surface waters impacted by the proposed improvements and the volume of material placed into the wetlands and surface waters to accommodate the construction of the proposed improvements. The scope of services includes discussions with the SFWMD, USACE, and Collier County to determine if the impacts require mitigation or if the project is self-mitigating due to the restoration of wetland habitats.

PROJECT APPROACH:

The tasks to be completed by the ENGINEER for this scope of work are identified below along with a discussion of the ENGINEER’s approach to completing each task.

Task 1: Preparation of Work Plan – Upon receipt of a Notice-to Proceed from

FDEP, the ENGINEER will prepare a work plan for internal use in managing the project and communicating the work to be done with the ENGINEERS staff members, the SURVEY SUB-CONTRACTOR, Southeastern Surveying. This work plan will include initiating the contract with the FDEP, and inputting staffing assignments, definition of work tasks, anticipated deliverables, task and sub-task budgets, and schedules into an internal project management system. The

ENGINEER will develop a project schedule identifying all project tasks and the time required to complete all tasks. The ENGINEER will develop a Health and

Safety Plan (HASP) in order to guide staff and their sub-contractors in following the safety protocols required by the ENGINEERS policies and procedures.

DELIVERABLE:

1.) Provide a Work Plan, Schedule, and Health and Safety Plan.

Task 2: Data Collection and Review – The ENGINEER will collect and review readily available existing data related to the RBNERR, surrounding area, and contributing drainage area. These data may include, but not be limited to, existing drainage studies, soils information, land use maps, county comprehensive plan(s), FEMA floodplain maps, wetland maps, federal and state listed species databases, habitats, aerial photographs, USGS topographic maps, electronic topographical

LiDAR data, property boundary maps and legal descriptions of the property, existing permits, and other reports and studies relative to the project site. The results of the data collection and review will be used in development of the construction plans and environmental permit applications to the SFWMD, USACE, and Collier County.

Figures will be created that show the project area overlain on aerial photography and wetlands and/or other surface water areas. These figures will be assembled into a map book that can be carried into the field for the site visits under Task 4.

1.) Provide figures showing the project area overlain on aerial photography and wetlands and/or other surface water areas.

2.) Provide FDEP agent and/or access points and lock combinations (or keys) for vehicle access to all of the project areas as obtained through meetings and coordination.

3.) Provide determination of the existing FPL utility easement and/or ac-cess agreements between FPL/FDEP for the project area.

Task 3: Pre-Application Meetings – Pre-application meetings will be required with four (4) local, state, and federal permitting agencies, and one (1) meeting with RBNERR, as the project proponent and property owner, to obtain permitting guidance, identify project key issues, and direct project design towards permit issuance. Pre-application meetings with the SFWMD, the USACE, USFWS, and

Collier County will be conducted. All pre-application meetings will be held virtually via a web-based meeting platform, such as Microsoft Teams, due to COVID-19 safety practices. The purposes of the meetings are to coordinate final design criteria, permit requirements, and permit fees for the proposed project. Two project staff members representing the ENGINEER will attend the pre-application meeting, the Project Manager and an Environmental Scientist. The ENGINEER will prepare a written meeting agenda and share aerials and other information needed to communicate the project to the meeting. The ENGINEER will prepare meeting minutes and distribute copies to all relevant parties within one week after the meeting.

DELIVERABLE:

1.) Provide meeting agendas and meeting minutes to be distributed to all relevant parties within one week after the meetings.

Task 4: Site Visits

Task 4.0 Field Reviews:

Key team members with the ENGINEER will perform detailed site reconnaissance to confirm existing site conditions, determine survey requirements, assess alternative design configurations for the low water crossings, grading requirements for relocating Trash Road, delineate wetlands, and determine existing habitats and land uses.

Under this task, the ENGINEER will delineate the jurisdictional wetland boundaries within the work areas in accordance with Chapter 62-340 “Delineation of the

Landward Extent of Wetlands and Surface Waters,” Florida Administrative Code

(FAC), and the criteria found within the U.S. Army Corps of Engineers (USACE)

Regional Supplement to the USACE Wetlands Delineation Manual: Atlantic and

Gulf Coastal Plain Region (Version 2.0). It is assumed that the work areas can be accessed using a 4-wheel drive vehicle. The boundaries will be marked with colored flagging and/or wood stakes as necessary (areas accessible by cattle and other livestock will not be marked with flagging or stakes). The wetland boundaries will be documented using hand-held, sub-meter accurate GPS units whose data can be transferred to help create the wetland impact drawings for the permit applications. The six low water crossings areas total 8.31 acres and Trash

Road (existing and proposed alignments) totals 8.20 acres, for a project total of

16.51 acres to be delineated.

Under this task, the ENGINEER will conduct a 100 percent survey of suitable habitats within the project area to determine the presence of gopher tortoises and their burrows. If gopher tortoises or their burrows are located within the project area, each burrow will be documented to include the location of each burrow, approximate age class of each tortoise based on burrow size (adult vs.

juvenile), and the activity class of each burrow observed (potentially occupied or abandoned). The age class and activity class are based on the guidelines provided by the FWC (Gopher Tortoise Permitting Guidelines, April 2008, Revised January

2017). All burrows will be flagged/staked in the field and GPS latitude and longitude coordinates of tortoises or their burrows will be documented with handheld GPS units.

This task will include the collection of data needed to complete UMAM forms, USACE Jurisdictional Determination forms and USACE wetland data forms for all jurisdictional wetlands within the project areas.

The ENGINEER will review existing habitats and land uses located within and immediately adjacent to the six low water crossings and existing and proposed

Trash Roads. Natural upland and wetland communities will be reviewed in order to assess their condition and dominant vegetation. The ENGINEER will assess the project areas for the potential presence or use of the project areas by state and/or federally-listed species. This qualitative assessment will be completed by reviewing readily available site-specific literature and conducting pedestrian transects of each work area, noting any observations of wildlife, evidence of wildlife utilization, and the presence of suitable habitat for listed species.

Information collected as part of this task will be included in a technical memorandum and submitted as part of the regulatory applications discussed under Task 11 below.

This task does not include seasonal assessments of the project area for specific flowering plant species or seasonal animal species surveys, nor does it include such sampling methods as field traps, drift nets, etc. for the collection of mammals, birds, reptiles, amphibians, or invertebrates.

Three days in the field are anticipated by one senior environmental scientist and a junior level environmental scientist to accomplish examining the site and the tasks in this section associated with flagging wetland boundaries and evaluating land uses and listed species.

Two site trips with one professional engineer and junior engineer is expected to accomplish examining the site to place stakes and flags for areas to be surveyed, evaluate existing drainage conditions and assess alternative design configurations for the proposed low water crossings and relocated Trash Road. The first site trip will function as the formal kick-off meeting with the FDEP where the ENGINEER and staff with the FDEP will accomplish the following:

• Introduce key staff members;

• Review the overall and specific project objectives;

• Review the project schedule;

• Identify data and information the FDEP can furnish to the ENGINEER, of which ENGINEER may use and rely upon in performing services under this scope; and

• Determine project management protocols such as billing procedures, correspondence procedures, gaining access to the project site, etc., making submittals (CAD standards and specification standards), owner’s responsibilities, etc.

Task 4.1 Wetland Jurisdictional Delineation:

Our team of biologists will establish the approximate wetland jurisdictional boundaries within approximately two miles of FP&L powerline easement and 1.5 miles of Trash Road alignments (both existing and proposed alignments) in accordance with federal and state criteria (2020 National Wetland Preservation

Rule and Chapter 62-340 of the Florida Administrative Code). Our biologists will also characterize wetland areas using paired wetland/upland data sheets (Atlantic and Gulf Coastal Region) for each USACE onsite wetland, and the seven-page jurisdictional determination form to accompany the Section 404 permit application. We will record the wetland delineation flag locations with a GPS capable of sub-meter accuracy but will not be responsible for professional survey or creating a specific-purpose survey. During this field effort, our team will set a maximum of 18 seasonal high water elevation (SHWE) biological indicator nails throughout the project limits; two (2) SHWE nails at each of nine (9) proposed low water crossing or bridge locations. The SHWE nails will be surveyed by professional surveyors in Task 5 for proper vertical elevation accuracy beyond the capabilities of mapping-grade GPS.

Task 4.2 Gopher Tortoise Survey:

Our team will conduct a general wildlife survey, with the intent to detect potential for presence/absence of protected species or habitat suitable for protected species that may occur within the project area. All observations of wildlife that inhabit, cross, or use habitats within and immediately adjacent to the site will be recorded. Recorded wildlife data will consist of both direct sightings and indirect observations (e.g., calls, scat, dens, tracks, burrows, feathers, scratchings, nests, or other evidence). Any observations of protected animals or plants will be recorded in a field data book, and the approximate location will be depicted on an aerial photograph. In addition, the potential for the site being part of, or within, an important wildlife corridor or USFWS-designated Critical Habitat will be assessed. Species-specific surveys for gopher tortoise and Florida bonneted bat (FBB) are anticipated within these project limits. If protected species or their habitats are identified within the project limits, formal species-specific surveys, beyond those identified in this scope, and additional permitting may be required, and will be negotiated under Supplemental Agreement.

Our team will conduct a 100 percent gopher tortoise survey (consistent with

FWC’s Gopher Tortoise Permitting Guidelines, per January 2017 revisions) of all appropriate habitat within and 25’ beyond the project limits. All identified gopher tortoise burrows within the surveyed limits will be flagged, individually labeled, and classified by activity status according to FWC guidelines. Additionally, all burrow locations will be recorded using a hand-held GPS capable of sub-meter accuracy. We will prepare a brief memorandum describing the findings of the gopher tortoise burrow survey and outline the recommended future planning considerations. This memorandum will include an aerial map depicting the location of observed gopher tortoise burrows and any incidental observations of protected flora or fauna.

Gopher tortoise surveys are only valid for 90 days prior to construction. Our survey will be conducted to support design considerations and permitting decisions. Completion of the 100 percent survey early in the process will prove useful in that it can assist in developing the final site design to avoid any permitting complications/costs and assist with development of a silt fence exclusion design. If gopher tortoise documented within the survey limits cannot be avoided by a minimum of 25’, permitting will be necessary prior to construction, and is addressed in a subsequent task.

Task 4.3 Florida Bonneted Bat Acoustic Survey

Our scientists will conduct Florida bonneted bat (FBB) acoustic surveys in accordance with the 2019 Florida Bonneted Bat Guidelines, published by the U.S.

Fish and Wildlife Service. The field data collection will include site reconnaissance to establish locations for placement of acoustic sampling equipment (Song Meter

SM4 Acoustic Recorder), equipment set up and pick up, and data download. The number of acoustic survey sites and nights needed for the assessment is dependent upon the overall acreage of suitable habitat proposed to be impacted by the action. Our scientists considered this a linear project (e.g., roadways, transmission lines) and based on that, a minimum of five detector nights per 0.6 mi (0.97 km) is recommended. This survey will establish five (5) survey stations, sampling for five (5) nights, totaling 25 station-nights of data collection.

Pursuant to the USFWS guidelines, our scientists will provide a detailed summary of findings as a technical memorandum including methods, weather conditions, visual observations of potential habitat, and summary of acoustic data relating to

FBBs (e.g., # of calls, time of calls) organized by the date on which the data was collected. Sonograms of all calls with signatures at or below 20kHz will be included with the memorandum. Note: The above scope of services assumes that no FBB roosts will be detected. Should potential FBB roosting be detected during this acoustic survey effort, additional cavity search surveys efforts will be required by USFWS, and these additional surveys will be negotiated in a supplemental agreement.

DELIVERABLE:

1.) Provide two (2) hard copies of the final Environmental Report and electronic files of the final Environmental Report in PDF and Word formats.

Task 5: Survey – All survey services will be accomplished in accordance with the

Minimum Technical Standards per State Rule. A Professional Land Surveyor licensed to practice in the State of Florida (Surveyor) and acting as a SURVEY SUB-

CONTRACTOR to ENGINEER will perform the survey for this project to include the following:

• Locate all improvements and utilities, as evidenced by above ground features or if designated and marked by the Utility Owners, their designated representative, or a contracted service at the original time of field visit. Trees are not included in this proposal.

• Obtain spot elevations on natural ground and existing improvements suitable for interpolation of one-foot contours to be shown on the final drawing. Cross-sections will be taken at 50-foot intervals.

• Locate wetlands line as flagged by the ENGINEER’s Environmental

Consultant.

• Establish a minimum of fourteen (14) site benchmarks.

• Topographic coverage will include the survey areas shown in Figure

1, existing bridge structures, and extend approximately 100’ north and south of the creek crossing area within the trail just north of

Figure 1.

• Cross-sections will extend approximately 20 feet on either side of the road centerline or to the wetlands, whichever is closer.

• Any hydrographic/bathymetric work is not included within this scope of services.

The ENGINEER will review with the survey performed by the SURVEY SUB-

CONTRACTOR to ensure that survey meets acceptable standards and project requirements.

DELIVERABLE:

1.) Provide survey data in hard copy and CAD format for areas shown in

Figure 1.

Task 6: Hydrologic/Hydraulic Modeling – The project area is located within the

Henderson Creek Watershed. The FDEP contracted with Taylor Engineering to develop a local scale hydrodynamic integrated groundwater/surface water model of the Henderson Creek Watershed utilizing the MIKE SHE / MIKE-11 computer program as part of the Henderson Creek Watershed Engineering Research Project completed in June 2014. A copy of this model/report will be obtained from Taylor

Engineering or FDEP for review to gain understanding of the broader watershed.

The ENGINEER understands the objective of the modeling is to increase flow capacity to the downstream side of Powerline and Trash Road to restore historical flow patterns within the RBNERR. However, it should be understood based on upstream development and urbanization within the watershed, the increase to the hydroperiod within the project area may be limited due to the many controlling factors that cannot be modified or accounted for.

The ENGINEER will provide support, coordination and peer review for the additional modeling efforts included in Task 15 below. This will include providing all existing, collected and field data through the initial phase of the project to support updating the current conditions MIKE SHE/ MIKE-11 model. Additional coordination will be required to facilitate the development of this revised model and the ENGINEER will provide a peer review of the new recommendations for the Henderson Creek Flatwood project.

The ENGINEER will also provide scour calculations for the existing and proposed

LWC’s and bridges determined through the additional modeling efforts for the

Henderson Creek Flatwood project. Using the output from Task 15, the ENGINEER will predict scour depths for the design simulations to determine the appropriate countermeasures and to assist with the substructure design of the bridges.

support, coordination and peer review for the additional modeling efforts included in Task 15 below.

DELIVERABLE:

1.) Provide electronic file (PDF) of the Peer Review Memo 2.) Provide electronic file (PDF) for the Scour Calculations Technical Memo

Task 7: Roadway Design Plans – The ENGINEER will develop a design and prepare construction plans to fill and re-grade the existing alignment of Trash Road, fill and grade the relocated alignment of Trash Road and reconstruct multiple low-water crossings along Power Line Road. The construction plans will show the existing alignment of Trash Road, the new alignment of Trash Road and the low-water crossings in plan, profile and cross-section views. The plans will also contain, general notes, temporary erosion and sedimentation controls, and details. The final design plans will include the location of all equipment, access, and work staging areas required to complete the project. The construction plans consisting of the following plan sheets will be submitted to the FDEP for review at

60% completion and final completion:

• Coversheet (1 sheet)

• Signature Sheet (1 sheet)

• Overall Site Plan (1 Sheet)

• Typical Section and Details Sheets (3 sheets)

• General Notes (1 sheet)

• Plan Profile Sheets Existing Trash Road (12 sheets)

• Plan Profile Sheets of Proposed Trash Road (10 Sheets)

• Plan Profile Sheets of Low Water Crossings (9 Sheets)

• Cross-Section Sheets (6 Sheets)

• Sediment and Erosion Control Plan (4 sheets)

• Sediment and Erosion Control Details (2 Sheets)

1.) Submit 60% design plans as outlined above.

2.) Submit Final design plans to include:

• Two half-size (11”x17”), hard copies of the final construction plans signed and sealed by an Engineer registered in the State of Florida;

• Electronic files of the final construction plans in PDF format and CAD format

Task 8: Bridge Design Plans – The ENGINEER will develop a design and prepare construction plans for eight (8) bridges to span over low-water crossings and two

(2) replacement bridges. The ten (10) bridges will utilize pile bents to minimize required excavation in the wetland areas. The piles must be driven using low-headroom equipment to meet required clearances from the FPL electrical transmission lines. A low-profile superstructure will be utilized to minimize required roadway height. A preliminary bridge design utilizing two alternates will be submitted to determine the bridge type to be used for final design. The bridge will minimize site-cast concrete to reduce the potential for wetland contamination. The bridges will be designed according to the AASHTO LRFD

Bridge Design Specifications to carry HL-93 loading. Curbs will be provided instead of typical bridge railing to reduce cost and minimize flow blockage during flooding events. A standard bridge plan will be utilized for all bridges with the number of spans varied to match the location to reduce both design and construction cost.

The bridge construction plans consisting of the following approximate plan sheets will be submitted to the FDEP for review at 60% completion and final completion:

• Keysheet (1 sheet)

• Signature Sheet (1 sheet)

• Index (1 sheet)

• Project Layout (1 sheet)

• Quantity Sheets (10 sheets)

• General Notes (1 sheet)

• Typical Section (1 sheet)

• Beginning End Bent Plan & Elevation (1 sheet)

• Ending End Bent Plan & Elevation (1 sheet)

• End Bent Details (2 sheets)

• Intermediate Bent Plan & Elevation (1 sheet)

• Intermediate Bent Details (1 sheet)

• Finish Grade Elevation Plan & Section (1 sheet)

• Typical End Span Plan (1 sheet)

• Typical Span Plan (1 sheet)

• Superstructure Section (1 sheet)

• Superstructure Details (3 sheets)

• Approach Slab Plan (1 sheet)

• Approach Slab Section (1 sheet)

• Slope Protection Plan (1 sheet)

• Slope Protection Details (2 sheets)

• Soil Boring Location Map (1 sheet)

• Bridge Soil Borings (5 sheets)

• Plan & Elevation (10 sheets)

• Bridge Hydraulics (10 sheets)

• Foundation Layout (10 sheets)

• Pile Data Table (10 sheets)

• Table of Elevations (10 sheets)

• Reinforcing Bar List (10 sheets)

• Bridge Load Rating (10 sheets)

1.) Submit 60% design plans as outlined above.

2.) Submit Final design plans to include:

• Two half-size (11”x17”), hard copies of the final construction plans.

• Final plans will be electronically signed and sealed by an

Engineer registered in the State of Florida

• Electronic files of the final construction plans in PDF format and CAD format

Task 9: Technical Specifications – The ENGINEER shall prepare technical specifications for the proposed hydrologic restoration. The general requirements shall be prepared by the FDEP. The ENGINEER will prepare the technical specifications to conform to the requirements necessary to adequately construct the low-water crossings, fill and regrade the existing Trash Road and construct the relocated Trash Road. The ENGINEER will submit a preliminary copy of the technical specifications to the FDEP for review and comment. The ENGINEER will revise the preliminary technical specifications per any FDEP review comments and submit the final technical specifications. The FDEP will incorporate the final technical specifications prepared by the ENGINEER into the specification document, which will include the general requirement specifications prepared by the FDEP.

DELIVERABLE:

1.) Submit two (2) signed and sealed hard copies of the final technical specifications and electronic files of the final technical specifications in PDF format that include the General Requirements portion of the specifications.

2.) Final specifications will be electronically signed and sealed by an

Engineer registered in the State of Florida.

Task 10: Permit Applications – The ENGINEER will prepare an application package for an Environmental Resource Permit (Individual ERP) to the SFWMD and a separate Section 404 Federal Dredge and Fill Permit application (Standard) to the USACE. The ENGINEER will also prepare a Vegetation Removal Permit application to Collier County.

The ENGINEER will develop written texts, graphics, drawings, etc., necessary for inclusion within the ERP application, the Federal Dredge and Fill Permit application, and the Collier County Vegetation Removal Permit application. The information to be contained within these applications will include:

• Completed copies of the appropriate permit application forms;

• Figures showing the project area, land use, and soils with the project area

• Tables showing the types and acreage of wetlands and other surface waters found within the project area, and the acreage of each wetland and surface water type proposed for impact by the project;

• A listing of property owners located adjacent to the proposed project area;

• The project design, including construction plans and sediment/erosion control plan;

• 11” x 17” permit drawings showing the proposed project and wetland impact area and;

• Hydrologic and Hydraulic Modeling Report

• Environmental Report

As part of this task, the ENGINEER will submit the completed applications to the appropriate agencies, including: the SFWMD, USACE, and Collier County. The

ENGINEER will also respond to one request for additional information from each agency (USACE, Collier County, and SFWMD) as part of this task.

It is assumed that that the permitting agencies could require wetland mitigation for the proposed project. If wetland mitigation is required, development of a mitigation plan and/or coordination with a wetland mitigation bank will be required. These services are not included with this scope but can be completed as an additional service if needed.

Task 10.1 Environmental Assessment Report

Our biologists will prepare an Environmental Assessment Report documenting field survey methodologies, observe existing natural communities, habitats, potential for species occurrence, evaluation of potential impacts to natural resources, and intended hydrologic restoration and ecological “lift” from the proposed engineered improvements. This report will be submitted in support of permitting with SFWMD and USACE, as well as consultation with FWS and NMFS.

Task 10.2 SFWMD General Permit

Our team will prepare a Notice of Intent to Use an Environmental Resource

General Permit - Form 62-330.402(1), to be submitted to SFWMD via the ePermitting web portal, as this project is expected to qualify for use of the

General Permit to the Department and Water Management Districts for

Environmental Restoration or Enhancement, per 62-330.485, FAC. The ENGINEER will provide all necessary engineering justification for the permit, including construction drawings, wetland impact sketches, pre- and post-wetland hydrologic/hydraulic models, geotechnical reports, and survey information necessary to accompany ERP application submittal.

The ENGINEER will pay the $250 General Permit application fee to SFWMD, to expedite the permit application process, and submit invoice for reimbursement of the application fee. We will provide post-application support by providing the environmental/natural resource responses for one (1) Requests for Additional

Information (RAI) letter from SFWMD pursuant to the submitted ERP application, and attending one (1) field review with SFWMD staff to review jurisdictional wetland limits and any wetland or surface water impact areas proposed by the project design.

Task 10.3 USACE Nationwide 27

Our team will prepare Section 404 dredge/fill Pre-construction Notification (PCN) to use Nationwide 27 - Aquatic Habitat Restoration, Enhancement, and

Establishment Activities (Form ENG 4345). The application will be supported by a

Biological Assessment Report focusing on federal jurisdictional impacts to wetlands and waters of the U.S., UMAM forms, and USACE jurisdictional determination forms to support an application for Dredge & Fill permit, in accordance with Section 404 of the Clean Water Act. Our team will provide all necessary engineering justification for the permit, including construction drawings, wetland impact sketches, pre- and post-wetland hydrologic/hydraulic models, geotechnical reports, and survey information necessary to accompany

NW 27 PCN submittal.

The ENGINEER will submit the Section 404 permit application forms and provided supporting construction plans, calculations, and reports to USACE via the Corps’ regulatory permitting email address. Documents too large for email will be electronically uploaded to the Corps’ Safe Upload site. The client will also provide all signed application forms and authorizations necessary for application submittal, as well as for the ENGINEER to interact with the USACE on behalf of the land owner.

There is no permit application fee required by USACE. THE ENGINEER will provide post-application support by providing the environmental/natural resource responses for one (1) Requests for Additional Information (RAI) letter from USACE pursuant to the submitted Section 404 application, and attending one (1) field review with USACE staff to review jurisdictional wetland limits and any wetland or surface water impact areas proposed by the project design.

Task 10.4 Collier County Vegetation Removal Permit Plans Review

Our biologists will prepare an application for a Vegetation Removal Permit

Application in satisfaction of Land Development Code Sections 3.05.01 - 3.05.05 and Chapter 4 E.4 FAC. The ENGINEER will pay the $250 application fee for the first acre of clearing, and has assumed an additional six acres of clearing at

$50/AC, for a total of $500 application fees paid to Collier County, to expedite the permit application process, and submit invoice for reimbursement of the application fee. If greater than six acres of vegetation require clearing, we will notify FDEP and request additional application fee reimbursement.

Task 10.5 FWC Gopher Tortoise Relocation Permit

Team members that are gopher tortoise FWC-authorized agents will prepare a gopher tortoise relocation permit application that summarizes Task 4.2 survey efforts in order to secure a 10 and Fewer Gopher Tortoise Relocation Permit. This task fee includes the 10 and fewer permit application fee of $217.00. The

ENGINEER will pay this fee to FWC on behalf of the client, and submit for reimbursement with invoicing. If, after completion of the 100% GT survey, more than 10 tortoise burrows will need to be excavated to relocate tortoises, FDEP will be notified, and we will submit a request for supplemental agreement to complete a larger Conservation Permit, commensurate with the number of tortoises burrows observed. The FWC application/mitigation fee will increase by

$326 per tortoise above 10.

Task 10.6 USFWS Section 7 Consultation

Our biologists will informally coordinate with USFWS South Florida Ecological

Service Office regarding potential effects to federally protected wildlife species.

Pre-application meetings in Task 3 will advise appropriate surveys, and resulting effect determinations will be evaluated in these coordination, prior to formal

Section 7 consultation between USACE and FWS during the Section 404 permitting application process.

Task 10.7 NMFS Section 7 & EFH Consultations

Our biologists will informally coordinate with NMFS Protected Resource Division regarding potential effects to federally protected wildlife species and with NMFS

Habitat Conservation Division regarding Essential Fish Habitat. Pre-application meetings in Task 3 will advise appropriate surveys, and resulting effect determinations will be evaluated in these coordination, prior to formal Section 7 and Magnuson Stevens Act consultation between USACE and NMFS during the

Section 404 permitting application process.

1.) Provide ERP application, Section 404 Federal Dredge and Fill Permit application, and Collier County Vegetation Removal Permit application in electronic format and one hard copy.

2.) Provide payment of all permit application fees to the SFWMD, USACE, and Collier County.

3.) Existing plans and attachments of previous permit applications for relevant projects within the RBNERR;

4.) Any relevant environmental, hydrologic and engineering studies associated with the RBNERR;

Task 11: Mitigation Services

Task 11.1 Planting Plan of Removed Trash Road

Our biologists will prepare a planting plan to re-vegetate the removed Trash Road berm with native vegetation consistent with surrounding vegetative communities.

Our planting plan will include designation of plant type, quantity, quality, planting location and density within the vacated roadway footprint. The planting plan sheets will be included in the construction plans.

Task 11.2 UMAM Analysis to Verify Self-Mitigation

Nationwide 27 assumes that the nature of aquatic habitat restoration projects will be “self-mitigating” because by definition of qualifying for the Nationwide permit, the resulting ecological benefits of the restoration have to be greater than the functional losses incurred by construction. We will prepare UMAM impact forms for each wetland impacted, and UMAM mitigation forms for each hydrologic improvement resulting from seven (7) new low water crossings structures and three (3) bridges; two existing and one new structure. UMAM calculations will be used to verify that the project’s functional gain will outweigh functional losses.

DELIVERABLE:

1.) Submit planting plans and UMAM impact forms for each wetland impacted and each hydrologic improvement location.

Task 12: Project Administration and Client Coordination – This task includes project management, contract administration, field staff coordination, agency coordination, meeting scheduling, and client and owner coordination for permitting tasks summarized above.

DELIVERABLE:

1.) Submit coordination meeting minutes and progress reports.

Task 13: Cost Estimates – The ENGINEER shall develop one (1) probable cost estimate of the labor and materials required for the construction of the project upon completion of the final drawing set.

DELIVERABLE:

2.) Submit electronic files of the probable construction cost estimate in

PDF and Microsoft Excel formats.

Task 14: Geotechnical Services – The geotechnical services will generally be conducted according to the Florida Department of Transportation (F.D.O.T.)

guidelines and will include the following tasks:

1. Perform ten (10) Standard Penetration Test (SPT) borings, one at each bridge site advanced to a depth of 75 feet below existing site grade.

The exploration estimate provided is based on being able to access the planned drill sites with all-terrain mounted drill rig using existing FP&L patrol roads. Per

FP&L policies, the GEOTECHNICAL SUB-CONSULTANT will stake the boring locations and will obtain clearances through Sunshine One Call Service. The ground surface elevations at or near the boring locations will be surveyed in Task

5. The GEOTECHNICAL SUB-CONSULTANT will also provide the following tasks:

1. Visually classify the samples recovered from the test borings according to the AASHTO Classification System.

2. Perform limited laboratory classification tests on representative samples from each soil strata encountered, including moisture content, grain size distribution, organic content, Atterburg limits, and corrosion testing.

3. Prepare boring logs depicting the soil and groundwater conditions encountered.

4. Prepare plan sheets for bridge borings as necessary.

5. Complete an engineering evaluation of the soil conditions encountered with respect to the planned bridges foundations.

6. Develop pile capacity curves and provide output files using the FB multiplier program.

7. Develop FB multiplier soil parameters.

8. Prepare geotechnical exploration report outlining our findings and recommendations for bridge foundations embankment construction and site preparation.

The ENGINEER will review the geotechnical services performed by the

GEOTECHNICAL SUB-CONTRACTOR to ensure the data meets acceptable standards and project requirements.

DELIVERABLE:

1.) Submit a Draft geotechnical reports required for design services.

2.) Submit the Final geotechnical report electronically signed and sealed by an Engineer registered in the State of Florida.

Task 15: Additional Hydrologic/Hydraulic Modeling Services – This task primarily includes additional hydrologic and hydraulic modeling in support of several potential hydrologic and habitat restoration projects within the boundaries of the

RBNERR in coastal Collier County as described below:

Task 15.1 Meetings and Management

The ENGINEER shall attend a kickoff meeting for the additional services and regular progress meetings with RBNERR staff remotely via Zoom, Microsoft

Teams, or other virtual meeting platform. Following the kickoff meeting, the

ENGINEER shall prepare a detailed project schedule that meets the needs of

RBNERR staff.

The ENGINEER shall prepare and submit monthly progress reports and maintain regular email and telephone communications over the duration of the project, assumed not to exceed 24 months. This task includes participation in up to three

(3) additional meetings with SFWMD, Collier County, and/or other stakeholders as needed to coordinate modeling of alternatives, if requested by RBNERR staff. The

ENGINEER will participate in one meeting (in-person or remotely) to present the results of the hydrologic modeling analyses at the conclusion of this study.

1.) Submit additional project schedule and monthly progress reports.

Task 15.2 Current Conditions Model Updates

The Henderson Creek Local Scale Model (LSM) was originally prepared using the

MIKE SHE /MIKE-11 software program for RBNERR by Interflow Engineering and later updated by Taylor Engineering for Collier County. MIKE SHE is a 2-dimensional overland flow modeling platform coupled with a 3-dimensional groundwater model. Both of these modules interact with the 1-dimensional MIKE-

11 model, which is used to represent streams, canals, ditches, and other 1-D flow features.

This task includes the collection and review of available existing data needed to update the LSM in order to characterize the existing hydrologic and hydraulic conditions. The updates will provide the detail needed to support a comparison of existing conditions and proposed alternatives. Model simulations will be run for a

10-year period of January 2008 through December 2017. Hydroperiod and water budget analyses will be performed on the results from this 10-year simulation period, which will allow for analyses of seasonal and annual variations in flows and stages within the model domain.

Subtask 15.2.1 - Update to 2018 LiDAR

The existing LSM model relied on a topographic dataset developed in 2007 which is now outdated and is known to have accuracy issues. The more recent (2018)

LiDAR-based topographic dataset now available provides greater accuracy and reflects changes to the topography due to development that has occurred since

2007. The Consultant will update the 2-D overland flow module to reflect the newer and more accurate topographic information. The ENGINEER will also update the overbank portions of channel cross sections in the 1-D model to be consistent with the newer LiDAR-based topographic data. This step is necessary to ensure proper coupling between the 1-D open channel model and the 2-D overland flow module.

Subtask 15.2.2 - Convert MIKE 11 to MIKE Hydro

The 1-D MIKE-11 model used to develop the existing LSM is being phased out and is no longer supported by DHI, nor is it included in newer releases of the MIKE SHE software. MIKE-11 has been replaced by MIKE Hydro, which has all of the capabilities of MIKE-11 in a more efficient code and a more useful user interface.

In this task, the ENGINEER will update the 1-D model to run within the latest version of MIKE Hydro. Results will be compared to the previous MIKE-11 generated results to check for consistency.

Subtask 15.2.3 - Incorporate Surveys, As-Built Data, and Improved

Boundary Conditions

The ENGINEER will add detail to more accurately characterize the existing hydrology and hydraulics in selected locations. This is necessary to provide a proper comparison of with and without project conditions in the areas of interest for this study. These details will be completed in two phases as information becomes available:

Subtask 15.2.3.1 - Incorporate As-Built Data and Improved Boundary

Conditions

Subtask 15.2.3.2 - Incorporate Surveys

Specific locations targeted for additional detail include the following:

o Trash Road and adjacent powerline road o Artesia development and associated stormwater outfalls, as depicted on permit drawings available from SFWMD.

o Existing culvert crossings under Collier Boulevard between Fiddler’s

Creek Parkway and Mcllvane Bay, based on FDOT as-built drawings.

o Existing spillway on Marco Shores Lake and downstream tidal creek.

It is assumed the necessary data will be provided in a survey by others.

o City of Marco Island surface water withdrawals will be updated, if necessary, with quantities reported by the City to SFWMD and available on the District’s e-permitting website.

o Existing culverts under the “Road to Nowhere” east of the Marco

Island Executive Airport (survey data assumed to be provided by others).

o Existing culverts under Shell Island Road (east portion). Survey data to be provided by others.

o Along the tidal boundary of the 2-D overland flow model, the boundary conditions will be upgraded from the current fixed levels to a tidally-varying water level boundary. The tidal water levels will be obtained from the nearest reliable tide gage with hourly data spanning the simulation period (2007 through 2018).

Subtask 15.2.4 – Model Calibration Check / Recalibration

Following completion of Tasks 15.2.1 through 15.2.3, the ENGINEER will run the updated model for the period of 2007 through 2018. Modeled flows at the

Henderson Creek weir at U.S. 41 will be compared with observed flows. Modeled stages in the Henderson Creek Canal at HC1 and HC2 will be compared with observed stages, and groundwater levels at selected monitoring sites will be compared with simulated groundwater levels to…