15
Module 3 Environmental Evaluations and CDOT - Design-Bid-Build (DBB) Project Development Process
Module 3Environmental Evaluations and CDOT -
Design-Bid-Build (DBB) Project Development Process
Environmental Evaluation and Clearance Agenda
o Environmental clearance process
o NEPA overviewo Site analysis for other
environmental components Permanent Water Quality(PWQ), flooding, dewatering, etc.
o CDOT DBB project development process
Environmental Evaluation and Clearance 2
Some areas that must be cleared include but are not limited to:
o NEPA requirements – umbrella for many other requirements including: o Wetlands
o T&E
o Archeological/cultural
o Migratory bird and wilderness
o Public outreach
o And more
3
Environmental Evaluation and Clearance
3Environmental Evaluation and Clearance
Contact CDOT for Information on CDOT NEPA Course – David Singer
Environmental Evaluation and Clearance 5
Key information from the NEPA Report for the SWMP Administrator for Design
Biological Report Wetlands Information
Environmental Evaluation - NEPA
Main Goal of Environmental Evaluation Process:
o Avoid (if possible)
o If not possible,
o Minimize Impacts
o Mitigate Impacts
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Environmental Evaluation and Clearance
5Environmental Evaluation and Clearance
Show all sensitive areas and control measures in the SWMP
PWQ may be required if all of the following are met or if a Cherry Creek Reservoir Development Project:
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Permanent Water Quality (PWQ)
6Environmental Evaluation and Clearance
o Results in land disturbance of greater than or equal to one acre or more or part of common plan of development,
R
o Either discharge to a stream segment that is on the 303(d) list for a roadway pollutant of concern or discharge to Cherry Creek Reservoir drainage basin and is exempted under Section 72.7.2 c.(4) of Regulation 72, and
o Has a 20% or more increase in impervious surface.
OR MAY BE A NEPA REQUIREMENT
R
7
Permanent Water Quality (PWQ)
7Environmental Evaluation and Clearance
Rachel HansgenPermanent Water Quality & Mitigation Pool Fund [email protected]
https://www.codot.gov/programs/environmental/water-quality/stormwater-programs/pwq-permanent-water-quality
Some exemptions and mitigation through CDOT mitigation pool
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Permanent Water Quality (PWQ)
Environmental Evaluation and Clearance
If a Project does require a PWQ Control Measures.
1. Evaluate if temporary control during construction
2. What modifications are required
3. Restoring to its designated PWQ control use.
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Permanent Water Quality (PWQ)Quiz Time
9EiEde 9Environmental Evaluation and Clearance
True or False:
The SWMP Administrator for Design is responsible for the PWQ design?
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Quiz Time!
10Environmental Evaluation and Clearance
False (unless they also wear the hat of the hydraulic engineer)
Quiz Time
When does the NEPA evaluation occur within the development process of a project?
Environmental Evaluation and Clearance 14
CDOT DBB Project Development “Process”
Environmental Evaluation/NEPA starts
ConstructionPhase
DesignPhase
Proposed Project
12Environmental Evaluation and Clearance
Scope
FIR
FOR
AD
Construction
Module 4 - 12
Module 13
Module 13
Module 14
Module 3
SWMP Development
Process Occurs
CDOT DBB Project Development “Process”
Environmental Evaluation/NEPA starts
ConstructionPhase
DesignPhase
Proposed Project
13Environmental Evaluation and Clearance
Scope
FIR
FOR
AD
Construction
SWMP
Information Gathered/ Inventory and Analysis
Draft SWMP (30-40%) including draft quantities before FOR
Finalize SWMP, Specs, Details and Quantities (for meeting SWMP should
be 80-90% complete)SWMP, Specs, Details and Quantities Ready for Bid Package/Final SWMP
Review/Final Sign off
SWMP https://www.codot.gov/progra
ms/environmental/water-quality/transportation-erosion-control-supervisor-certification
SWMP Key
Personnel• SWMP Admin
for Design• Design
Engineer• Hydraulic
Engineer• SWMP Reviewer• Regional
Environmental Specialist/ RPEM/RWPCM
• SWMP Reviewer
• SWMP Admin for Construction
• CDOT Project Engineers (PE)
• Contractor
CDOT FORM 128 and Environmental Clearance
DB and CM/GCDBB
14Environmental Evaluation and Clearance
SWMP Reviewer Bid Package SWMP
Construction
AD
RPEM signs off on Form 128
RWPCM or RES reviews full SWMP
SWMP Reviewer (may be RWPCM or
RES)
Construction
Questions?
15Environmental Evaluation and Clearance
