207 Temporary Sediment and Erosion Controls

Description (207.01)

Materials (207.02)

Construction Requirements (207.03)

Maintenance (207.04)

Performance (207.05)

Method of Measurement (207.06)

Basis of Payment (207.07)

Description (207.01)

Each project will have its own NPDES permit.  This permit could be either nationwide or individual, and is only for the work within the project work limits.

  1. Project personnel is required to read and follow the permit.
  2. Are stream or river crossing (causeway) provisions part of the project permit?  If there are no provisions then the contractor must get a permit to ford the stream or river.
  3. The project personal are required to read and follow the SWPPP.

Work outside the project work limits

  1. Has the contractor obtained a permit that includes an SWPPP for all construction work outside the project work limits that disturb 1 acre (.4ha) or more (borrow pits, haul roads, equipment storage sites, waste areas, temporary plant sites, project offices)?  See 107.19.  These areas meet permit requirements if they add up to the required area as stated above.  Some areas may be on ODOT RW but outside of the project work limits, or within the limits but the contractor has made a change to the work. (Filling an Infield)
  2. Has the contractor furnished the project with a permit that has a stream or river crossing (Causeways) provisions? See107.19. If not then there is no fording of the streams or rivers.
  3. Has the contractor furnished a permit to fill in water areas (ponds, lakes) outside the project work limits? See 107.19.
  4. Has the contractor furnished spill response equipment for equipment working next to a body of water? See 107.19.
  5. Has the contractor furnished a sediment-laden water impoundment location for construction operations in and around a body of water? (Drill shafts, cofferdams) See 107.19.
  6. Has the Contractor provided a location to wash out cement or concrete trucks? This location must be away from all bodies of water.

Materials (207.02)

Furnish the materials as outlined below.

  1. Furnish commercial fertilizer, seed, and mulch material that meet 659.
  2. Furnish filter fabric material for ditch checks that meets standard drawing DM-4.4.
  3. Furnish rock material for ditch checks that meets standard drawing DM-4.4.
  4. Furnish filter fabric material for inlet protection that meets standard drawing DM-4.4.
  5. Furnish filter fabric material for perimeter controls that meets standard drawing DM-4.4.
  6. Furnish filter fabric material or hay or straw bale material for bale filter dikes that meets standard drawing DM-4.3.
  7. Furnish excavation and embankment material for sediment basins and dams that meets standard drawing DM-4.3.
  8. Furnish pipe material for slope drains that meets standard drawing DM-4.3.
  9. Furnish rock channel protection material that meets standard drawing DM-4.3.

Construction Requirements (207.03)

Project personnel could be held personally liable for polluting the waters of Ohio. The project personnel are required to read the permit and modify the SWPPP to meet the permit.  The project personnel are also required to read the SWPPP and modify the SWPPP to meet the construction field conditions.

Figure 207.A - Sediment Basin, Bale Filter Dike, Slope Drain, Construction Seed

Further information can be obtained by reviewing the training manual “Implementation of Proper Erosion and Sediment Control Practices” by Gayle E. Mitchell.

Clearing and Grubbing (207.03.A)

The following controls must be maintained until there is 70% seed growth.

Figure 207.B - Construction Seed, with Dikes

  1. If areas are to remain idle for more than 21 days then construction seed these areas within 7 days.
  2. If areas are within 50 ft. (15m) of a stream and are to remain idle for more than 21 days then construction seed these areas within 2 days.
  3. Date the start of Clearing and Grubbing and construction seed applications at the proper locations on the SWPPP.

Installation of Sediment and Erosion Control Items (207.03.B)

The following controls must remain in place until there is 70% seed growth.

Figure 207.C Perimeter Filter Fabric Fence

Perimeter Controls (207.03.B.1)

Place Perimeter controls as outlined below and date the placement of these items on the SWPPP.

Filter Fabric Fence
  1. Have perimeter controls been placed per the SWPPP, or as required before or concurrent with any clearing and grubbing operation?
  2. Have these perimeter controls been dated on the SWPPP along with the dates of the clearing and grubbing?
  3. Have these perimeter controls been constructed per standard drawing DM-4.4?

Figure 207.D Divert Water Away Perimeter Control

  1. Have perimeter controls been placed per the SWPPP, or as required to divert water away from the project and in particular contain water from entering bare areas of the project?
  2. Have these perimeter controls been dated on the SWPPP?
  3. Have these perimeter controls been constructed per standard drawing DM-4.4?

Figure 207.E Protect Water Body Perimeter Control

  1. Have perimeter controls been placed per the SWPPP, or as required to protect all water bodies (ponds, streams, wetlands, etc.) and any other significant areas shown on the plans?
  2. Have these perimeter controls been dated on the SWPPP?
  3. Have these perimeter controls been constructed per standard drawing DM-4.4?

Perimeter Dike
 

Figure 207.F Perimeter Dike in place with the Clearing and Grubbing

Dikes
  1. Have perimeter controls been placed per the SWPPP, or as required before or concurrent with any clearing and grubbing operation?
  2. Have these perimeter controls been dated on the SWPPP along with the dates of the clearing and grubbing?
  3. Have perimeter controls been placed per the SWPPP, or as required to divert water away from the project and in particular contain water from entering bare areas of the project?
  4. Have these perimeter controls been dated on the SWPPP?
  5. Have perimeter controls been placed per the SWPPP, or as required to protect all water bodies (ponds, streams, wetlands, etc.) and any other significant areas shown on the plans?
  6. Have these perimeter controls been dated on the SWPPP?
  7. Have these perimeter controls been constructed per standard drawing DM4.4?
Inlet Protection (207.03.B.2)

Place Inlet Protection as outlined below and date the placement of this item on the SWPPP.

Figure 207.G - Inlet Protection

  1. Has the inlet protection been placed per the SWPPP, or as required around Catch Basins?
  2. Have the inlet protections been dated on the SWPPP along with the dates of the catch basin construction?
  3. Has the inlet protection been placed around all structures that will allow storm water to enter?
  4. Have these inlet protections been dated on the SWPPP along with the dates of the structure construction?
  5. Have the inlet protection been constructed per standard drawing DM-4.4?
Construction Seeding and Mulching (207.03.B.3)

Seed and mulch all areas, or as required by the permit and before winter shut down.

Figure 207.H - Construction Seed

  1. The rate furnished for straw mulch is 2 tons per acre. (0.5 metric ton/1000 m˛)
  2. The rate furnished for fertilizer is ˝ the rate of 659.
  3. Do not place construction seed on frozen ground.
  4. Construction seed areas that work will be suspended during the winter.
  5. Construction seed areas that are required by the permit as the project construction progresses.
  6. Record the date of construction seed placement on the SWPPP.
Slope Protection (207.03.B.4)

Place Dikes as outlined below and date the placement of these items on the SWPPP.

Fill Slopes that are greater than 8 feet  (2.5M) and have had no filling activity for three weeks.

Figure 207.I - EC Items Required For Slope Protection

  1. Have dikes been placed per the SWPPP, or as required?
  2. Have the dikes been dated on the SWPPP along with the construction of the slopes?
  3. Have the dikes been constructed per standard drawing DM-4.3?
  4. Have slope drains been placed per the SWPPP, or as required?
  5. Have the slope drains been dated on the SWPPP along with the dike construction?
  6. Have the slope drains been constructed per standard drawing DM-4.3?

Figure 207.J - Item 670 Required For Cut Slope

Cut slopes furnish the following before any work starts.

  1. Has a ditch been constructed at the top of the cut slope?
  2. Has this ditch been dated on the SWPPP along with the construction of the cut slope?
  3. Has the slope protection (Item 670) been constructed per the plans as the cut slope has been constructed?
  4. Has the slope protection (Item 670) been dated on the SWPPP?
Ditch Checks and Ditch Protection (207.03.B.5)

Place Ditch Checks as outlined below and date the placement of these items on the SWPPP.

Figure 207.K - Filter Fabric Ditch Check

Filter Fabric
  1. Have ditch checks been placed per the SWPPP, or as required, as soon as the ditch was cut?
  2. Have ditch check dates been recorded on the SWPPP along with the ditch construction?
  3. Have the filter fabric ditch checks been constructed per standard drawing DM-4.4?
  4. Have ditch checks been placed for drainage areas of 2 acres (0.8 ha) or less?
  5. Has the ditch check been replaced at the end of the day if working on the ditch?

Figure 207.L - Rock Ditch Check

Rock
  1. Have ditch checks been placed per the SWPPP, or as required, as soon as the ditch was cut?
  2. Have the ditch checks been dated on the SWPPP along with the ditch construction?
  3. Have the rock ditch checks been constructed per standard drawing DM-4.4?
  4. Have ditch checks been placed for drainage areas of 2 acres (0.8 ha) to 5 acres (2.0 ha)?
  5. Have ditch checks been replace at the end of the day if working on the ditch?
Bale Filter Dike (207.03.B.6)

Place Bale Filter Dikes as outlined below and date the placement of these items on the SWPPP.

Figure 207.M - Bale Filter Bike

  1. Have bale filter dikes been placed per the SWPPP, or as required, near the toe of 2:1 maximum slopes that have a length less than 100 feet (30m) within 7 days of grubbing with completion before grading begins?
  2. Has bale filter dike placement been dated on the SWPPP along with the construction of the slope?
  3. Has a sediment basin been constructed for each .25 acre (0.1 ha) of drainage area on a 2:1 slope?  Sediment basin spacing maybe increased for slopes less than 2:1.
  4. Have the bale filter dikes been constructed per standard drawing DM-4.3?
Sediment Basins and Dams (207.03.B.7)

Place Sediment basins and Dams as outlined below and date the placement of these items on the SWPPP.  Sediment Basins and Dams are NOT to be placed in a body of water.

Figure 207.N - Sediment Basin

  1. Have sediment basins and dams been placed within 7 days of grubbing and completed before grading begins at the locations shown on the SWPPP, or as required?  Some locations are at the bottom of a ravine, culvert inlets and outlets, at the end of a ditch, and any concentrated water exit point.
  2. Have sediment basins and dams been dated the on the SWPPP?
  3. Have sediment basins and dams been constructed such that they will retain 67 cubic Yards (125 cubic meters) of water for every 1 acre (0.1 ha) of drainage area?
  4. Have the sediment basins and dams been constructed per standard drawing DM-4.3?
  5. Have the sediment basins and dams been constructed with construction fence when specified?
River, Stream, and Water Body Protection (207.03.B.8)

All rivers, streams, and water bodies must be protected from all sediment-laden water. Any and all 207 items are provided to ensure the protection of all rivers, streams, and water bodies.

Figure 207.O - Stream Protection
Stream Relocation (207.03.B.8.a)

Fully stabilize any temporary-relocated water carrier before the water is diverted as outlined below.  Examples are temporary run-arounds to constructed culverts, temporary ditches, or any temporary water carrier constructed by the contractor to build the project.

Figure 207.P - Temporary Channel

Temporary Channel
  1. Have temporary channels been stabilized with rock before diverting the flow into the temporary channel?
  2. Have temporary channels been stabilized with Item 670 before diverting the flow into the temporary channel?
  3. Have temporary channels been stabilized with 70% grass growth before diverting the flow into the temporary channel?
Permanent Channel

 

Fully stabilize any permanently-relocated water carrier before the water is diverted as outlined below.  Examples are permanent relocated streams, ditches, or any water carrier.

Figure 207.Q - Permanent Channel

  1. Have permanent streams or channels been stabilized per the plans, and is 70% grass growth present before diverting the flow?
Stream and River Crossings (Causeways) (207.03.B.8.b)

Equipment can cross a water carrier only by means of a Stream and River Crossings (Causeways) if and only if the project permit allows it or the contractor has obtained a permit.  Place Stream or River Crossing (Causeways) as outlined below and date the placement on the SWPPP.  All work required on DM-5.1 is at the contractor’s expense.

Figure 207.R - Stream Crossing Built to Ford the Stream

  1. Construct the causeway to a height of 1 foot (.3m) above the normal water elevation. as per standard drawing DM-5.1.
  2. Construct the causeway as narrow as practical to provide for the required equipment to ford as per standard drawing DM-5.1.
  3. Furnish culvert pipes if filling more than one-third of the water carrier as per standard drawing DM-5.1.
  4. The minimum culvert size is 18 inches (0.5 m), or 2 times the normal depth (whichever is greater) as per standard drawing DM-5.1.
  5. The maximum spacing between culverts is10 feet (3m) as per standard drawing DM-5.1.
  6. Provide clean dump rock only in the water carrier as per standard drawing DM-5.1.
  7. Furnish 50 feet (15m) approach drive of dump rock on both sides of the causeway as per standard drawing DM-5.1.
  8. Furnish a flow diversion dike in the approach drive as per standard drawing DM-5.1.
  9. Furnish a bale filter dike on both sides of the approach drive that connects to the stream protection.  The Bale Filter Dike is paid for per 207.06.

Maintenance (207.04)

All 207 items are to be maintained until there is 70% grass growth as outlined below.

Figure 207.S - Required Maintenance

  1. Check all temporary and permanent erosion control items every 7 days .
  2. After every rainfall of more than ˝ inch (10mm) check all temporary and permanent erosion control items and provide a report for the project file and for the contractor.
  3. The contractor will correct all erosion control items as required by the reports.

Perimeter Filter Fabric Fence (207.04.A)

Figure 207.T - Required Maintenance For Perimeter Filter Fabric Fence

  1. Has the trapped sediment reached the removal height of ˝ the fabric height?
  2. Has the item become nonfunctional and need to be replaced?
  3. Does the item need to be removed due to 70% grass growth in the area?

Filter Fabric Ditch Checks (207.04.B)

Figure 207.U - Required Maintenance For Filter Fabric Ditch Checks

  1. Has the trapped sediment reached the removal height of ˝ the fabric height?
  2. Has the item become nonfunctional and need to be replaced?
  3. Does the item need to be removed due to 70% grass growth in the area?

Rock Ditch Checks (207.04.C)

Figure 207.V - Required Maintenance For Rock Ditch Check (The rock here has been blown out and needs replaced with larger rock.)

  1. Has the trapped sediment reached the removal height of ˝ the rock height?
  2. Has the item become nonfunctional and need to be replaced?
  3. Does the item need to be removed due to 70% grass growth in the area?

Inlet Protection (207.04.D)

Figure 207.W - Required Maintenance For Inlet Protection

  1. Has the trapped sediment reached the removal height of ˝ the fabric height?
  2. Has the item become nonfunctional and need to be replaced?
  3. Does the item need to be removed due to 70% grass growth in the area?

Dikes (207.04.E)

Figure 207.X - Required Maintenance For Dikes (The Dike has been washed out)

  1. Has the item become nonfunctional and need to be replaced?
  2. Does the item need to be removed due to 70% grass growth in the area?

Bale Filter Dikes (207.04.F)

Figure 207.Y - Required Maintenance For Bale Filter Dikes (This Filter Fabric Fence is furnished instead of straw or hay bales)

  1. Has the trapped sediment reached the removal height of ˝ the fabric or bale height?
  2. Has the item become nonfunctional and need to be replaced?
  3. Does the item need to be removed due to 70% grass growth in the area?

Sediment Basins and Dams (207.04.G)

Figure 207.Z - Required Maintenance For Sediment Basins and Dams

  1. Has the trapped sediment reached the removal load reduction of ˝ the capacity of the sediment basins and dams?
  2. Has the item become nonfunctional and need to be replaced?
  3. Remove the items by filling or other methods no sooner than 3 days before placing the permanent erosion control items (Item 659 seed and mulch) in the area.

 

Temporary Erosion Control (207.04.H)

Figure 207.AA - Sediment Basin Removal is Required

  1. Have all temporary erosion control items been removed before the project is accepted?
    1. Inlet Protection
    2. Filter Fabric Fence
    3. Sediment Basins
    4. Rock and all other EC Items

Performance (207.05)

All temporary and permanent erosion control items provide a means to meet the requirements and comply with all applicable Federal, State, and Local laws.  ODOT is ensuring it is making a good faith effort to meet all requirements by providing a weekly or rain-dictated report to the contractor .

  1. Have any additional erosion control items been placed or adjusted to meet field conditions?
  2. Has the contractor assigned personnel to comply with all applicable Federal, State, and local laws?
  3. Has the contractor corrected all reported work items before the next report was done?

Method of Measurement (207.06)

The methods used to measure these items are provided in the specification.

Basis of Payment (207.07)

The methods used for the basis of payment of these items are provided in the specification.