Erosion control



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EROSION CONTROL:


MINIMIZE SOIL EXPOSURE


TRIGGERS

GUIDANCE FOR PROJECT DEVELOPMENT

GUIDANCE FOR CONSTURCTION MANAGEMENT

  • Heavy equipment use, soil disturbance and clearing. Areas of special concern include:

    • steep slopes, floodplains, wetlands or stream banks

    • Sensitive habitats and trees

    • Wet season construction

    • Large construction project

  • Design to follow natural contours

  • Cleary delineate preserved vegetation on site map/plans

  • Include appropriate buffer zones around sensitive habitats

    • Extend buffers to include tree drip lines

  • Project phasing (areas) must be clearly identified




  • Use existing roads, paths and paved/graveled areas for movement of equipment where possible

  • Use construction fencing around preserved vegetation and sensitive areas

  • Clip vegetation at ground level; no grubbing if possible

  • Wet season shutdown and winterization to be implemented for multi year projects

  • Develop separate plans for different phases with start and end dates identified for each phase

STABILIZE AND/OR MANAGE

DISTURBED AREA

  • Project contains steep slopes, floodplains, wetlands or stream banks

  • Disturbed soils with potential to cause turbid runoff; indirect or directly to surface waters

  • ½ inch of rain in 24 hour period forecasted

  • Snow melt – freeze/thaw causing runoff

  • Include vegetation establishment criteria and inspection frequency for BMPs such as wetlands, bio-swales, etc.

  • Include appropriate buffer zones between construction and sensitive areas

  • Phasing incorporated into site plan

  • Include inspection frequency; agency notification guidelines

  • Plan to include installation of sediment control BMPs before soil disturbance

  • Include establishment criteria and schedule for all vegetative BMPs.

  • Use orange safety fencing around preserved vegetation and sensitive areas

  • Seed or cover exposed soils immediately upon completion of final grade or phased work

  • Inspect site within 2 hours of ½ inch of rain during work hours

  • Develop and implement inspection and maintenance schedule

DIVERT CLEAN WATER AWAY FROM DISTURBED AREAS

  • Streams, waterways or ditches in project vicinity



  • Design water diversion techniques into grading plan

  • Protect and use natural features to manage and infiltrate flows

  • Promote LID site design

  • Design and indicate methods of infiltration

  • Identify up-gradient or upslope water sources and divert them around the project or install BMP to manage flows

  • Construct ditches, water bars or diversion into vegetated areas for infiltration

  • Monitor changing conditions to identify up-gradient or upslope water sources and divert them around the project or install BMP to manage flows


POLLUTION CONTROL:

Store and use materials (and equipment) in a way that prevents releases


TRIGGERS

GUIDANCE FOR PROJECT DEVELOPMENT

GUIDANCE FOR CONSTURCTION MANAGEMENT

  • Use and storage of any waste, equipment or construction material on site. Areas of special concern include:

    • hazardous materials use

    • Operations close to waters of the state or water conveyance system

    • Concrete wash-outs

    • Equipment wash

    • Proximity to regulated or sensitive habitats



  • Produce and Implement a Pollution Control Plan in compliance with 00290.30.

  • If required, produce and implement a Spill Prevention Control and Countermeasures (SPCC) plan for petroleum storage.

  • Where possible, locate storage areas away from sensitive environments or waters of the state

Use recycled materials wherever feasible


  • Consider use of recycled materials during design, when economically feasible

  • Identify project generated materials which may be re-used or recycled on-site

  • Identify sources of usable recycled materials near project location

  • Determine whether locally available recycled materials can be used on the project without impacting costs, engineering requirements or the environment.

  • Identify project generated materials which may be re-used or recycled on-site

Manage waste to minimize environmental impacts


  • Whenever waste will be generated




  • Consider waste management options when it is apparent waste will be generated and provide options in the project specifications.




  • Develop waste management options prior to generating waste

  • Protect waste storage areas to prevent release of pollutants

  • Determine how wastes will be stored, disposed of and documented prior to generation

Identify contaminants and hazardous materials impacting the project as early as possible


  • When a project includes excavation, demolition or property acquisition.

  • Conduct hazardous materials assessments for projects early in the design process, following the “ODOT HazMat Program Procedures Guidebook”

  • Prepare special provisions for management of the hazardous materials identified during construction

  • Follow special provisions regarding management of hazardous materials within the project.

  • If unanticipated hazardous substances are discovered during construction stop work and notify the engineer immediately, according to 00290.20(f)

Respond to spills immediately and clean up completely

  • NA

  • Include a spill response plan in the project Pollution Control Plan (see 00290.30), and any other required pollution prevention plans

  • Implement the spill response plan, in full, immediately.

  • Response must include containment, required regulatory reporting and cleanup to original condition.


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