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− | <td></td> | + | <td>Lot benching</td> |
− | <td></td> | + | <td>Lengthen flow path and reduce velocity of runoff (EP)</td> |
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− | <td></td> | + | <td>Borrow and stockpile area protection</td> |
− | <td></td> | + | <td rowspan=3>Prevent soil detachment and transport (EP)</td> |
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− | <td> | + | <td>Construction road stabilization</td> |
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− | <td> | + | <td>Trackout prevention</td> |
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− | <td></td> | + | <td>Temporary stream crossings</td> |
− | <td></td> | + | <td>Protect stabilized channel from erosion (EP)</td> |
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− | <td> | + | <td>Permanent stream crossings</td> |
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− | <td rowspan=10></td> | + | <td rowspan=10>Drainage management</td> |
− | <td></td> | + | <td>Temporary run-on diversions</td> |
− | <td></td> | + | <td rowspan=3></td> |
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− | <td> | + | <td>Temporary right-of-way diversions</td> |
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− | <td> | + | <td>Right-of-way diversions (water bars)</td> |
− | |||
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− | <td></td> | + | <td>Temporary stream diversions</td> |
− | <td></td> | + | <td rowspan=2>Redirect flow away from work areas (EP)</td> |
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− | <td> | + | <td>Cofferdams and barriers</td> |
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</tr> | </tr> | ||
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− | <td></td> | + | <td>Ditch and channel protection</td> |
− | <td></td> | + | <td>Protect channel from erosive flows (EP)</td> |
</tr> | </tr> | ||
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− | <td></td> | + | <td>Check dams</td> |
− | <td></td> | + | <td>Prevent downcutting, settle sediment (EP, SC)</td> |
</tr> | </tr> | ||
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− | <td></td> | + | <td>Temporary slope drains</td> |
− | <td></td> | + | <td>Protect slope from erosive flows (EP)</td> |
</tr> | </tr> | ||
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− | <td></td> | + | <td>Temporary outlet controls</td> |
− | <td></td> | + | <td>Protect outlet area from scour erosion (EP)</td> |
</tr> | </tr> | ||
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− | <td></td> | + | <td>Sediment ponds</td> |
− | <td></td> | + | <td rowspan=2>Slow flows and settle out sediment (SC)</td> |
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− | <td> | + | <td>Sediment traps</td> |
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</tr> | </tr> | ||
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− | <td></td> | + | <td>Dewatering discharge management</td> |
− | <td></td> | + | <td>Filter and settle out sediment particles (SC)</td> |
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Construction site BMPs and their function and control mechanisms
Link to this table
BMP function | BMP types | Erosion prevention (EP) or sediment control (SC) mechanism |
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Planning | Planning, sequencing, and scheduling | Minimize bare area and exposure period (EP) |
Preservation and protection designation | ||
Land clearing planning and staging | ||
Land grading planning and staging | ||
Lot benching | Lengthen flow path and reduce velocity of runoff (EP) | |
Borrow and stockpile area protection | Prevent soil detachment and transport (EP) | |
Construction road stabilization | ||
Trackout prevention | ||
Temporary stream crossings | Protect stabilized channel from erosion (EP) | |
Permanent stream crossings | ||
Drainage management | Temporary run-on diversions | |
Temporary right-of-way diversions | ||
Right-of-way diversions (water bars) | ||
Temporary stream diversions | Redirect flow away from work areas (EP) | |
Cofferdams and barriers | ||
Ditch and channel protection | Protect channel from erosive flows (EP) | |
Check dams | Prevent downcutting, settle sediment (EP, SC) | |
Temporary slope drains | Protect slope from erosive flows (EP) | |
Temporary outlet controls | Protect outlet area from scour erosion (EP) | |
Sediment ponds | Slow flows and settle out sediment (SC) | |
Sediment traps | ||
Dewatering discharge management | Filter and settle out sediment particles (SC) | |