project scope photogrammetry survey geotechnical roadway design drainage design permitting pavement...

Project Scope• Photogrammetry• Survey• Geotechnical• Roadway Design• Drainage Design• Permitting• Pavement Design• Traffic Control Plans• Lighting Justification• SUE• Utility Coordination Support• Contamination Assessment

• Cultural Resource Assessment• Right of Way Mapping• Public Involvement• Quantities• Long Range Estimates• Specifications• Quality Deliverables• Constructable/Biddable

Deliverables• Electronic Deliverables• Schedule Control

Project Team

Management Team

Staff Availability

PD&E Study• Commitments

– Eastern Indigo Snake Protective Measures

– Bald Eagle Nest Survey Prior to Construction

– Gopher Tortoise Survey Prior to Construction

– Re-Initiate Section 7 Florida Panther Consultation

– Mitigate Net Loss of Wetlands for Wood Stork

• Continuation of Public Involvement Process

Project Issues

• Typical Section• Pond Location• Historic Drainage Pattern• Wetland Impacts• Floodplain Impacts• Threatened & Endangered Species• Permitting Requirements• Access Management

Project Description• Project Location and Limits

– From the Lee/Hendry County Line to the Hendry/Collier County Line

• Roadway Classification– Rural Minor Arterial– Emerging SIS Facility– Hurricane Evacuation Route

• Existing Typical Roadway Section– Two-Lane Rural– Open Ditch Drainage– 200-foot Right-of-Way

• Posted Speed = 60 MPH• Existing Horizontal

Geometry– No Horizontal Curves– Two Deflection Points

• Land Usage– North Side

– Mining Facility– Rural Agricultural Land

– South Side– Mining Facility– Residential Property

Design Speed

• PPM Maximum for 6-Lane High Speed Suburban – 50 MPH (PPM, Vol. I, Section 2.16.1)

• PD&E Study – 55 MPH (Approved Ultimate Typical Section)

• Scope of Services – 55 MPH (Interim Typical Section)

• Posted Speed – 60 MPH• Operating Speed > 60 MPH• Recommended Design Speed = 55

MPH– Consistent with Adjacent Projects

Design Criteria

Proposed Interim Typical Section• Four-Lane Divided

– Expandable to the Ultimate PD&E Recommended Six-Lane Typical Section

– Includes Multi-Use Path– Elevated Sidewalk and Path

– Reduced Outside Shoulder Width (Cost Savings)

– Optimized Swale Size (Cost Savings)– Typical Section Meets Scope

Outside Shoulder

• Reduce Outside Shoulder Width to Eight-feet

• Provides Added Width for Harmonization & Multi-Use Path

• Reduces Stabilization Cost

Interim Typical Section Benefits

• Provides for Three-Feet Base Clearance• Accommodates Multi-Use Path• Accommodates Off-Site Drainage• Reduce Construction Cost – Cost Savings• Reduces Right-of-Way Acquisition – Cost

Savings

End of Project Transitions

• Objectives– Construct Full Width of Pavement– Construct Necessary Drainage Elements

• Optimizes Future Construction in Collier County

660’ 1485’

End ProjectFPID 425841-5

Pavement Design Considerations

• Pavement Type Selection Report• Pavement Design– Use FC-5– Base Clearance Variation– Resilient Modulus Reduction– Elevated Estimated Seasonal High

Groundwater

Drainage & Permitting

• Attenuate and Maintain Historical Flows Patterns and Outfalls• Maintain Hydro Periods of Viable Wetlands• FDEP Basin Assessment• Water Quality and DEP Nutrient load Management• Pond Design• Floodplain Impacts and compensation• Manage Offsite Drainage• Culvert Extension• Electronic Permitting


Attenuate and Maintain Historical Flow Patterns and OutfallsIssues• No apparent basin outfall• Undefined ditch grades• Flat grades, high water table• No distinct historical flow directionsDesign Solutions • Design Storm Management System as a Closed basin• Partially replace ditch on south• Utilize SFWMD credits for systems with inlets in grassed areas (Interceptor swales)• Prevent concentrated Post Development Pond Point Discharges• Slow Recovery of Detention Volume back into the R/W


• Maintain Hydro Periods of WetlandsIssue• Prevent alteration of hydrology to adjacent wetlands• Secondary Impacts and buffer zonesDesign Solutions• Eliminate deep offsite collector ditches along wetlands• Maintain 25ft buffer beyond construction limits where feasible to minimize secondary impacts• Use Ordinary High Water (OHW) for Surface water limits impacts instead of top of bank


• FDEP Basin AssessmentIssues• R/W Needs Critical• FDEP Classification• TMDL Status• Nutrient Loading Calculations• Coocolahatshee and Everglades “South” West Coast watershed• WBID 3259X

WBID 3259 X


• Water Quality and DEP Nutrient load Management

Issues• FDEP Statewide Storm water Rule• SFWMD interpretation and application of the rule• Wet detention water quality standardsDesign Solutions• Statewide Storm water rule is not adapted but is currently enforced in various water management districts. Conformance with the rule will be demonstrated in the Pond design using the District one Event Mean Concentration (EMC) values below

Wet detention Total Phosphorus removal Wet detention Total Nitrogen removal.


• Pond Design Design solutions

• Evaluate dilution with offsite runoff to reduce Post-development Nitrogen removal efficiency and reduce the need for a expensive treatment train design

• Utilize various treatment credits (Natural conservation area, site reforestation, Florida Friendly landscaping, etc.

• Increase nutrient removal, by increasing permanent pool volume and resident time

• Select Treatment volume (TV) depth based on available hydraulic head


• Floodplain Impacts and compensation

Design solutions• SR 82 is a designated hurricane

evacuation route and will need to provide flood free access (Travel lanes above the BFE)

• We will assess and discuss the need for an expensive compensation site with SFWMD, given the vast size of the floodplain, relative small impact and insignificance of the rise

• The rise calculates +/- 0.006 feet or 0.072 inches in a highly undeveloped rural area


• Culvert ExtensionIssue• Only cross culvert (double 30”RCP) in the project area was extended around 2004. Flow line

elevation appears to be higher than the adjacent ditch and impedes positive drainage.Solution• The structural condition, historical and future function within the basin will be assessed during

final design and evaluated for extension or replacement.

Permitting Requirements and Coordination

• Understand District One Electronic Permit Preference

• Environmental Resource Permit (SFWMD)

• Section 404 Dredge & Fill Permit (USACE)

• NPDES (FDEP)

• Coordinate with USFWS (Florida panther)

• FWC Gopher Tortoise Relocation Permit prior to Construction (unlikely)

Wetlands•Mainline (within 200 ft of existing roadway)• Approximately 8 acres of wetlands and 4 acres of surface waters• Surface waters are unlikely USACE jurisdictional

•Pond Sites• No additional impacts anticipated

•Mitigation• Wetland mitigation available at Panther Island, Big Cypress, and Corkscrew Regional (send out for competitive bid process)• Senate Bill (not preferred option)

Protected Species

Florida Panther• PD&E commitment - re-initiate USFWS Section 7 Consultation• Entire project within the secondary zone• Habitat analysis required for any proposed impacts for new ROW and/or SMF and FPC sites• Biological Assessment Anticipated•Panther mortality approx. 1.5 miles southeast of project on Corkscrew Rd in 2010•Project limits do not meet criteria for wildlife crossings• Mitigation for impacts available at PIMB, BCMB, and CRMB

Protected SpeciesCrested Caracara

• PD&E stated MANLAA, therefore, no further coordination anticipated

Wood stork• Within the CFA of three wood stork colonies• Foraging Analysis required if impacts to surface waters and

wetlands are greater than 5 acres combined

Bald Eagle• Nearest nest is greater than 5 miles to southeast• Will survey appropriate nesting habitat prior to document submittal

Eastern Indigo Snake• Standard FDOT Construction Precautions

Gopher Tortoise• Suboptimal habitat• Survey appropriate habitat

Traffic Control Plan

Phase I


Phase II


Phase III

Utility Coordination Support

• Support District One

• Prepare utility conflict matrix

• Attend Utility Conference

• Present plans

Access Management

Geotech Considerations

• Establish ESHW

• Cap Rock

• Confirm sub-surface condition

Noise

• Single isolated residence

• Noise barrier not reasonable abatement

• Re-evaluate during design

LRE Review

Roadway Pavement Width

FDOT LRE KHA LRE

$1,529,400 $1,265,700

Median Component – Type E Curb

$144,200 $0

Element

Total Difference $407,900 10%

Unique Concepts Cost Savings• Reduce Shoulder Width

• Eliminate Floodplain Comp Site

• Demonstrate No Impaired Water Body

Total Cost Savings

• $ 11,000

• $ 150,000

• $ 20,000

$ 191,000 5%

Project Schedule

R/W Mapping – 18 Months

Design Schedule – 20 Months

Will provide defined schedule 10 days after NTP

Quality Control

• KHA QA/QC Manual• All Documents• Seasoned staff• Subconsultants required

to follow• Peer/Constructability

Review

Reasons for Selecting KHA• Thorough understanding of project issues

• Experience to develop and implement cost savings solutions

• Staff is available to start immediately

• Complete understanding of District One Preferences

• Extensive experience with District One staff

Questions?

Extra Slides

Awareness of District Procedures

• Plans/Reports Submittal Process• Electronic Review Comments• Meeting Protocol• E-mail Subject Line• Invoicing Procedures• SUE All Sign Posts• De-Silting and Video Inspection

of all Cross Drains• Projection of Plans for Utility

Meeting