StormwaterCommitmen

tsCategorical Exclusion Training Class

Stormwater RunoffLet’s start with defining what is Stormwater Runoff?

Stormwater runoff is rain or snowmelt that flows over land and does not percolate/get absorbed into the soil.

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Stormwater Pollution

Managing the Environmental & Project Development Process

Primary Pollutants• Sediment• Heavy Metals• Oil & Grease• Solids• Salt

Sources• Brake dust, tire wear, fluids• Litter• Construction• Maintenance Activities• Atmospheric Deposition

Regulations• Federal Water Pollution Control Act

Clean Water Act

• National Environmental Policy Act (NEPA)

• ORC Chapter 6111 (Water Pollution Control) Ohio EPA National Pollutant

Discharge Elimination System (NPDES) Permits Construction General Permit

(CGP) Watershed Specific CGP 4Categorical Exclusion Training Class

Environmental Impacts• Construction Stormwater Impacts:

Stormwater runoff quality during construction

Stormwater runoff quality after construction

• Primary Commitments: Comply with Ohio EPA Construction

NPDES Permits Temporary sediment and erosion

controls during construction Post-construction stormwater

management controls after construction (permanent)

• Secondary Commitments: Local stormwater programs or

commitments

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Addressing Impacts

• Temporary sediment and erosion control during construction Supplemental Specification 832

ODOT Responses:

• Post-construction stormwater management controls (after construction - permanent) L&D Manual, Vol. 2 Drainage Design

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Addressing Impacts

ODOT BMP Toolbox• Vegetated Biofilter• Manufactured Systems • Extended Detention • Retention Basin• Infiltration Techniques • Bioretention Cell• Constructed Wetlands

Post-Construction Stormwater Management

• All post-construction BMPs require long term maintenance plan

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Environmental Impacts

• Only 1 question we need to answer…

Online CE:

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Environmental Impacts

• Does the project require coverage under the CGP? (Notice of Intent = NOI)

Question 1:

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Construction General Permit (NOI)

Question 1a:• Is the project new

construction/redevelopment or routine maintenance?New Construction / Redevelopment

• Construction with 1 acre or greater of earth disturbance activities

Routine Maintenance• Specific project types with less than 5

acres of earth disturbance activities

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Routine Maintenance Projects

What is Routine Maintenance?• ODOT L&D Manual, Vol. 2 Section

1112.2• Berm repair or topsoil placement along shoulder

• Bridge abutment repair• Bridge deck overlay• Bridge deck replacement• Chip sealing• Culvert repair/lining/some

replacement• Curb repairs• Ditch cleanout• Fence repair/replacement• Full depth pavement

repairs• Guardrail

installation/replacement

• Lighting maintenance

• Linear grading• Loop detector

repairs• Noise wall repair• Partial depth pavement

repairs• Pothole filling• Resurfacing• Sign repair/maintenance• Signal

installation/maintenance• Tree and brush removal• Sidewalk Replacement• Isolated Slide Repairs

If not listed, the project cannot be considered “routine maintenance”.

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Routine Maintenance Projects

What is Routine Maintenance?• ODOT L&D Manual, Vol. 2 Section

1112.2• Berm repair or topsoil placement along shoulder

• Bridge abutment repair• Bridge deck overlay• Bridge deck replacement• Chip sealing• Culvert repair/lining/some

replacement• Curb repairs• Ditch cleanout• Fence repair/replacement• Full depth pavement

repairs• Guardrail

installation/replacement

• Lighting maintenance

• Linear grading• Loop detector

repairs• Noise wall repair• Partial depth pavement

repairs• Pothole filling• Resurfacing• Sign repair/maintenance• Signal

installation/maintenance• Tree and brush removal• Sidewalk Replacement• Isolated Slide Repairs

Routine Maintenance does not equal “Maintenance Project”

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Environmental Impacts

• Is the project in a Watershed Specific CGP Area?

Question 1b:

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Environmental Impacts

• Not really a question, but remarks should clarify your assumptions…

Question 1c:

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Environmental Commitments

• What are the commitments?

Question 1d:

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Environmental Commitments

Example Commitments:• Commitment 1: Project will need Notice

of Intent submitted to EPA• Commitment 2: Project will need to

comply with CGP or watershed specific CGP

• Commitment 3: Project will address local stormwater issues• Commitments should be kept general at this point

• Only commit to what we know for sure16Categorical Exclusion Training Class

Questions?

Becky Humphreys (614)387-1125Becky.Humphreys@dot.state.oh.us

Categorical Exclusion Training Class 17