Difference between revisions of "BMP options sheet for highway and road runoff management"
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<td>[[File:highway swale 2.png|center|100px]]</td> | <td>[[File:highway swale 2.png|center|100px]]</td> | ||
<td>Diffuse flow energy from concentrated roadway surface before discharging over a slope; reinforce discharge point and slopes; promote sheet flow</td> | <td>Diffuse flow energy from concentrated roadway surface before discharging over a slope; reinforce discharge point and slopes; promote sheet flow</td> | ||
| − | <td>Compost sock, bio-slope, outlet reinforcement, spray mulch, compost rip rap matrix (between rocks)</td> | + | <td>Compost sock (see image), bio-slope, outlet reinforcement, spray mulch, compost rip rap matrix (between rocks)</td> |
<td>May increase slipperiness of shoulder slope</td> | <td>May increase slipperiness of shoulder slope</td> | ||
</tr> | </tr> | ||
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<td>[[File:Catch basin insert.png|center|100px]]</td> | <td>[[File:Catch basin insert.png|center|100px]]</td> | ||
<td>Filter litter and debris from flow as it enters catch basins; preferably with pollutant sorbents <sup>2</sup></td> | <td>Filter litter and debris from flow as it enters catch basins; preferably with pollutant sorbents <sup>2</sup></td> | ||
| − | <td>Catch basin insert; hooded outlet pipe; oil and grease separator</td> | + | <td>Catch basin insert (see image); hooded outlet pipe; oil and grease separator</td> |
<td>Might become heavy for maintenance crews to lift; must be cleaned to prevent clogging</td> | <td>Might become heavy for maintenance crews to lift; must be cleaned to prevent clogging</td> | ||
</tr> | </tr> | ||
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<td>[[File:gross solid removal device.png|center|100px]]</td> | <td>[[File:gross solid removal device.png|center|100px]]</td> | ||
<td>Route runoff through a screen or filter material to remove litter and treat particulate, and the associated nutrients, toxics and hydrocarbons</td> | <td>Route runoff through a screen or filter material to remove litter and treat particulate, and the associated nutrients, toxics and hydrocarbons</td> | ||
| − | <td>Gross Solids Removal Device (GSRD), compost tube inside of rock weep,</td> | + | <td>Gross Solids Removal Device (GSRD) (see image), compost tube inside of rock weep,</td> |
<td>Often contained in confined space; maintenance crew will need confined space training</td> | <td>Often contained in confined space; maintenance crew will need confined space training</td> | ||
</tr> | </tr> | ||
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<td>[[File:Geotextile wrapped trench.png|center|100px]]</td> | <td>[[File:Geotextile wrapped trench.png|center|100px]]</td> | ||
<td>Diffuse heat from road and parking surfaces prior to discharge to sensitive waters</td> | <td>Diffuse heat from road and parking surfaces prior to discharge to sensitive waters</td> | ||
| − | <td>Geotextile wrapped rip rap thermal tube, infiltration trench</td> | + | <td>Geotextile wrapped rip rap thermal tube (see image), infiltration trench</td> |
<td>None</td> | <td>None</td> | ||
</tr> | </tr> | ||
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<td>[[File:Highway swale.png|center|100px]]</td> | <td>[[File:Highway swale.png|center|100px]]</td> | ||
<td>Provide vegetated swale drainage systems with low head grade breaks in rural sections</td> | <td>Provide vegetated swale drainage systems with low head grade breaks in rural sections</td> | ||
| − | <td>“Living ditch”, check dams (rip rap, bio-weeper, bio-ditch filter)</td> | + | <td>“Living ditch” (see image), check dams (rip rap, bio-weeper, bio-ditch filter)</td> |
<td>Can hold water for a time after runoff occurs so need to keep design depths shallow; grade breaks can be obstruction hazard to recreational vehicles using swale</td> | <td>Can hold water for a time after runoff occurs so need to keep design depths shallow; grade breaks can be obstruction hazard to recreational vehicles using swale</td> | ||
</tr> | </tr> | ||
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<td>[[File:particle skimmer.png|center|100px]]</td> | <td>[[File:particle skimmer.png|center|100px]]</td> | ||
<td>Retrofit stored water BMPs with proper outlet and skimmer devices</td> | <td>Retrofit stored water BMPs with proper outlet and skimmer devices</td> | ||
| − | <td>Particulate skimmer, baffle weir, Faircloth skimmer (proprietary device)</td> | + | <td>Particulate skimmer (see image), baffle weir, Faircloth skimmer (proprietary device)</td> |
<td>None</td> | <td>None</td> | ||
</tr> | </tr> | ||
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<td>[[File:pervious pavement.png|center|100px]]</td> | <td>[[File:pervious pavement.png|center|100px]]</td> | ||
<td>Use pervious paving material in areas that will support it</td> | <td>Use pervious paving material in areas that will support it</td> | ||
| − | <td>Pervious asphalt and concrete, paving blocks</td> | + | <td>Pervious asphalt and concrete (see image), paving blocks</td> |
<td>None for pavement; blocks can pose walking problems if not designed properly; recommendation for minimal salt use could mean ice might be present for short periods</td> | <td>None for pavement; blocks can pose walking problems if not designed properly; recommendation for minimal salt use could mean ice might be present for short periods</td> | ||
</tr> | </tr> | ||
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<td>[[File:Island rain garden.png|center|100px]]</td> | <td>[[File:Island rain garden.png|center|100px]]</td> | ||
<td>Route water to bioretention, filtration or infiltration areas where conditions appropriate</td> | <td>Route water to bioretention, filtration or infiltration areas where conditions appropriate</td> | ||
| − | <td> | + | <td>Rain garden (see image)</td> |
<td>Near-road locations could possibly impede vision at intersections if vegetation not kept low; water might collect adjacent to roadway</td> | <td>Near-road locations could possibly impede vision at intersections if vegetation not kept low; water might collect adjacent to roadway</td> | ||
</tr> | </tr> | ||
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<td>[[File:Curved channels.png|center|100px]]</td> | <td>[[File:Curved channels.png|center|100px]]</td> | ||
<td>Geomorphically stabilize channels</td> | <td>Geomorphically stabilize channels</td> | ||
| − | <td>Cross vanes, fish steps, | + | <td>Cross vanes, fish steps, curvilinear channel restoration (see image), reinforced streambank, grade adjustments, revetments, root wads</td> |
| − | curvilinear channel restoration, reinforced streambank, grade adjustments, revetments, root wads</td> | ||
<td>None</td> | <td>None</td> | ||
</tr> | </tr> | ||
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<td>[[File:Off line pool.png|center|100px]]</td> | <td>[[File:Off line pool.png|center|100px]]</td> | ||
<td>Use off-line storage in available floodplain, open space</td> | <td>Use off-line storage in available floodplain, open space</td> | ||
| − | <td>Off-line pools, enhanced floodplains, wetland restoration/preservation</td> | + | <td>Off-line pools (see image), enhanced floodplains, wetland restoration/preservation</td> |
<td>None if kept away from areas | <td>None if kept away from areas | ||
where vehicles expected to travel or go off of the road</td> | where vehicles expected to travel or go off of the road</td> | ||
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<td>[[File:Under street infiltration trench.png|center|100px]]</td> | <td>[[File:Under street infiltration trench.png|center|100px]]</td> | ||
<td>Use sub-grade storage with or without perforations to allow for storage and infiltration where drainage determined not to impact road structure</td> | <td>Use sub-grade storage with or without perforations to allow for storage and infiltration where drainage determined not to impact road structure</td> | ||
| − | <td>Under street infiltration trenches, vault storage to replace surface ponds, rest areas parking lots</td> | + | <td>Under street infiltration trenches (see image), vault storage to replace surface ponds, rest areas parking lots</td> |
<td>Maintenance crew will need confined-space training</td> | <td>Maintenance crew will need confined-space training</td> | ||
</tr> | </tr> | ||
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<sup>2</sup>Note that housekeeping practices like street sweeping and chemical use are discussed in the Pollution Prevention section</font size> | <sup>2</sup>Note that housekeeping practices like street sweeping and chemical use are discussed in the Pollution Prevention section</font size> | ||
| − | <noinclude>[[ | + | <noinclude> |
| + | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/General bmp information]] | ||
| + | </noinclude> | ||
Latest revision as of 20:03, 4 August 2022
BMP options for highway and road runoff management
Link to this table
| BMP Type | Objective | BMP Examples | Safety Considerations |
|---|---|---|---|
 |
Diffuse flow energy from concentrated roadway surface before discharging over a slope; reinforce discharge point and slopes; promote sheet flow | Compost sock (see image), bio-slope, outlet reinforcement, spray mulch, compost rip rap matrix (between rocks) | May increase slipperiness of shoulder slope |
 |
Filter litter and debris from flow as it enters catch basins; preferably with pollutant sorbents 2 | Catch basin insert (see image); hooded outlet pipe; oil and grease separator | Might become heavy for maintenance crews to lift; must be cleaned to prevent clogging |
 |
Route runoff through a screen or filter material to remove litter and treat particulate, and the associated nutrients, toxics and hydrocarbons | Gross Solids Removal Device (GSRD) (see image), compost tube inside of rock weep, | Often contained in confined space; maintenance crew will need confined space training |
 |
Diffuse heat from road and parking surfaces prior to discharge to sensitive waters | Geotextile wrapped rip rap thermal tube (see image), infiltration trench | None |
 |
Provide vegetated swale drainage systems with low head grade breaks in rural sections | “Living ditch” (see image), check dams (rip rap, bio-weeper, bio-ditch filter) | Can hold water for a time after runoff occurs so need to keep design depths shallow; grade breaks can be obstruction hazard to recreational vehicles using swale |
 |
Retrofit stored water BMPs with proper outlet and skimmer devices | Particulate skimmer (see image), baffle weir, Faircloth skimmer (proprietary device) | None |
 |
Use pervious paving material in areas that will support it | Pervious asphalt and concrete (see image), paving blocks | None for pavement; blocks can pose walking problems if not designed properly; recommendation for minimal salt use could mean ice might be present for short periods |
 |
Route water to bioretention, filtration or infiltration areas where conditions appropriate | Rain garden (see image) | Near-road locations could possibly impede vision at intersections if vegetation not kept low; water might collect adjacent to roadway |
 |
Geomorphically stabilize channels | Cross vanes, fish steps, curvilinear channel restoration (see image), reinforced streambank, grade adjustments, revetments, root wads | None |
 |
Use off-line storage in available floodplain, open space | Off-line pools (see image), enhanced floodplains, wetland restoration/preservation | None if kept away from areas where vehicles expected to travel or go off of the road |
 |
Use sub-grade storage with or without perforations to allow for storage and infiltration where drainage determined not to impact road structure | Under street infiltration trenches (see image), vault storage to replace surface ponds, rest areas parking lots | Maintenance crew will need confined-space training |
1Use of proprietary devices or images merely for illustrative purposes and does not mean endorsement of a product
2Note that housekeeping practices like street sweeping and chemical use are discussed in the Pollution Prevention section
This page was last edited on 4 August 2022, at 20:03.