module 3 environmental evaluations and cdot - design-bid

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

5

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:

6

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 Manager303-757-9975Rachel.hansgen@co.state.us

https://www.codot.gov/programs/environmental/water-quality/stormwater-programs/pwq-permanent-water-quality

Some exemptions and mitigation through CDOT mitigation pool

8

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.

9

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?

10

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