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| !colspan =2|Erosion and Sediment Control | | !colspan =2|Erosion and Sediment Control |
| |- | | |- |
− | |style="width: 100px";| | + | |style="width:30px"| |
| |Bioretention locations should be blocked from construction traffic and should not be used for erosion and sediment control | | |Bioretention locations should be blocked from construction traffic and should not be used for erosion and sediment control |
| |- | | |- |
| || | | || |
| |Proper erosion and sediment controls should be in place for the drainage area | | |Proper erosion and sediment controls should be in place for the drainage area |
| + | |- |
| + | !colspan =2|Materials |
| + | |- |
| + | |style="width:30px"| |
| + | |Gravel for the underdrain should be clean and washed; no fines should be present in the material |
| + | |- |
| + | || |
| + | |Underdrain pipe material should be perforated and of the correct size (when specified in design) |
| + | |- |
| + | || |
| + | |A cap should be placed on the upstream (but not the downstream) end of the underdrain (when specified in design) |
| + | |- |
| + | || |
| + | |Biomedia should be tested to confirm that it meets specifications |
| + | |- |
| + | || |
| + | |Mulch composition should be correct |
| + | |- |
| + | !colspan =2|Elevations |
| + | |- |
| + | |style="width:30px"| |
| + | |Depth of the gravel and invert of the underdrain |
| + | |- |
| + | || |
| + | |Inverts for inflow and outflow points |
| + | |- |
| + | || |
| + | |Filter media depth |
| + | |- |
| + | || |
| + | |Ponding depth provided between the surface of the filter bed and the overflow structure |
| + | |- |
| + | || |
| + | |Mulch depth |
| + | |- |
| + | !colspan =2|Landscaping and Stabilization |
| + | |- |
| + | |style="width:30px"| |
| + | |Correct vegetation should be planted |
| + | |- |
| + | || |
| + | |Pretreatment area should be stabilized |
| + | |- |
| + | || |
| + | |Drainage area should be stabilized prior to directing water to the bioretention |
| + | |- |
| + | !colspan =2|The following items should be checked after the first rainfall event, and adjustments should be made as necessary: |
| + | |- |
| + | |style="width:30px"| |
| + | |Outfall protection/energy dissipation at concentrated inflow should be stable |
| + | |- |
| + | || |
| + | |Flow should not concentrate and should spread evenly over the filter bed |
| + | |- |
| + | || |
| + | |Ponded water at the surface of the bioretenton facility must drain within 24 hours of the end of the storm event. <br> The biomedia should fully drain within a maximum period of 72 hours |
| + | |- |
| + | || |
| + | |Excessive sediment accumulation should not be present |
| |} | | |} |
− |
| |
− | <tr><th colspan =2>Materials</th></tr>
| |
− | <tr><td width = "5%"></td><td>Gravel for the underdrain should be clean and washed; no fines should be present in the material</td></tr>
| |
− | <tr><td></td><td>Underdrain pipe material should be perforated and of the correct size (when specified in design)</td></tr>
| |
− | <tr><td></td><td>A cap should be placed on the upstream (but not the downstream) end of the underdrain (when specified in design)</td></tr>
| |
− | <tr><td></td><td>Biomedia should be tested to confirm that it meets specifications</td></tr>
| |
− | <tr><td></td><td>Mulch composition should be correct</td></tr>
| |
− | <tr><th colspan =2>Elevations</th></tr>
| |
− | <tr><td width = "5%"></td><td>Depth of the gravel and invert of the underdrain</td></tr>
| |
− | <tr><td></td><td>Inverts for inflow and outflow points</td></tr>
| |
− | <tr><td></td><td><strong>Filter depth?</strong> after biomedia is placed</td></tr>
| |
− | <tr><td></td><td>Ponding depth provided between the surface of the filter bed and the overflow structure</td></tr>
| |
− | <tr><td></td><td>Mulch depth</td></tr>
| |
− | <tr><th colspan =2>Landscaping and Stabilization</th></tr>
| |
− | <tr><td width = "5%"></td><td>Correct vegetation should be planted</td></tr>
| |
− | <tr><td></td><td>Pretreatment area should be stabilized</td></tr>
| |
− | <tr><td></td><td>Drainage area should be stabilized prior to directing water to the bioretention</td></tr>
| |
− | <tr><th colspan =2>The following items should be checked after the first rainfall event, and adjustments should be made as necessary:</th></tr>
| |
− | <tr><td width = "5%"></td><td>Outfall protection/energy dissipation at concentrated inflow should be stable</td></tr>
| |
− | <tr><td></td><td>Flow should not concentrate and should spread evenly over the filter bed</td></tr>
| |
− | <tr><td></td><td>Ponded water at the surface of the bioretenton facility must drain within 24 hours of the end of the storm event. <br> The biomedia should fully drain within a maximum period of 72 hours</td></tr>
| |
− | <tr><td></td><td>Excessive sediment accumulation should not be present</td></tr>
| |
− | </table>
| |
| | | |
| [[category:Checklists]] | | [[category:Checklists]] |
| [[category:Construction]] | | [[category:Construction]] |