Difference between revisions of "Primary cost components for stormwater wetlands"
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| − | + | <font size=3>'''Primary cost components for stormwater wetlands'''<br> | |
| + | Link to this [[Editing primary cost components for stormwater wetlands|table]]</font size> | ||
<table class="sortable"><tr> | <table class="sortable"><tr> | ||
<th>Implementation stage</th> | <th>Implementation stage</th> | ||
| Line 7: | Line 8: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td rowspan="3">Site preparation</td> | + | <td rowspan="3"><center>Site preparation</center></td> |
<td>Tree and plant protection</td> | <td>Tree and plant protection</td> | ||
<td>Protection cost ($/acre) * affected area (acre)</td> | <td>Protection cost ($/acre) * affected area (acre)</td> | ||
| − | <td rowspan="3">Removal of existing structures, topsoil removal and stockpiling</td> | + | <td rowspan="3"><center>Removal of existing structures, topsoil removal and stockpiling</center></td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
| Line 21: | Line 22: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td rowspan="2"><center>Site formation</center></td> |
| − | <td> | + | <td>Excavation and grading</td> |
| − | <td> | + | <td>4-foot depth excavation cost ($/acre) * area (acre)</td> |
| + | <td rowspan="2">Soil and rock fill material, tunneling</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Hauling material off-site</td> |
| − | + | <td>Excavation cost * (% of material to be hauled away)</td> | |
| − | <td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td rowspan="2"><center>Structural components</center></td> |
| − | <td> | + | <td>Inlet structure</td> |
| − | <td> | + | <td>($/structure)</td> |
| + | <td rowspan="2"><center>Pipes, catch basins, manholes, valves</center></td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Outlet structure</td> | ||
| + | <td>($/structure)</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td rowspan="3"><center>Site restoration</center></td> | ||
| + | <td>Soil preparation</td> | ||
| + | <td>Soil cost ($/acre) * seeding/planting area (1 foot average depth per acre)</td> | ||
| + | <td rowspan="3"><center>Tree protection, soil amendments, seedbed prepparation, trails</center></td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Seeding (or sodding)</td> | ||
| + | <td>Seeding cost ($/acre) * seeded area (acre)</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Planting/transplanting</td> | ||
| + | <td>Planting cost ($/acre) * planted area (acre)</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td rowspan="7"><center>Annual operation, maintenance, and inspection</center></td> | ||
| + | <td>Debris removal</td> | ||
| + | <td>Removal cost ($/acre) * area (acre) * frequency (2 per year)</td> | ||
| + | <td rowspan="7"><center>Vegetation maintenance, cleaning of structures</center></td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Invasive plant removal</td> | ||
| + | <td>Labor cost ($/hr) * time * frequency</td> | ||
| + | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Sediment removal</td> |
| − | <td> | + | <td>Removal cost ($/acre) * area (acre) * frequency (1 per 5 years)</td> |
| − | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Erosion repair</td> |
| − | <td> | + | <td>Repair cost ($/acre) * area affected</td> |
| − | |||
| − | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Gate/valve operation</td> |
| − | + | <td>Operation cost ($) * operation frequency (2 per year)</td> | |
| − | |||
| − | <td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Inspection</td> |
| − | <td> | + | <td>Inspection cost ($) * inspection frequency (2 per year)</td> |
| − | |||
| − | |||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>Mowing</td> |
| − | <td> | + | <td>Mowing cost ($/acre) * mowing frequency (4 per year)</td> |
| − | |||
| − | |||
</tr> | </tr> | ||
</table> | </table> | ||
Revision as of 19:29, 6 March 2013
Primary cost components for stormwater wetlands
Link to this table
| Implementation stage | Primary cost components | Basic cost estimate | Other considerations |
|---|---|---|---|
| Tree and plant protection | Protection cost ($/acre) * affected area (acre) | ||
| Topsoil salvage | Salvage cost ($/acre) * affected area (acre) | ||
| Clearing and grubbing | Clearing cost ($/acre) * affected area | ||
| Excavation and grading | 4-foot depth excavation cost ($/acre) * area (acre) | Soil and rock fill material, tunneling | |
| Hauling material off-site | Excavation cost * (% of material to be hauled away) | ||
| Inlet structure | ($/structure) | ||
| Outlet structure | ($/structure) | ||
| Soil preparation | Soil cost ($/acre) * seeding/planting area (1 foot average depth per acre) | ||
| Seeding (or sodding) | Seeding cost ($/acre) * seeded area (acre) | ||
| Planting/transplanting | Planting cost ($/acre) * planted area (acre) | ||
| Debris removal | Removal cost ($/acre) * area (acre) * frequency (2 per year) | ||
| Invasive plant removal | Labor cost ($/hr) * time * frequency | ||
| Sediment removal | Removal cost ($/acre) * area (acre) * frequency (1 per 5 years) | ||
| Erosion repair | Repair cost ($/acre) * area affected | ||
| Gate/valve operation | Operation cost ($) * operation frequency (2 per year) | ||
| Inspection | Inspection cost ($) * inspection frequency (2 per year) | ||
| Mowing | Mowing cost ($/acre) * mowing frequency (4 per year) |