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Difference between revisions of "Infiltration basin - system construction inspection checklist"

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<center><font size=3>Infiltration basin - system construction inspection checklist'''.</font size><br>
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<font size=3>'''Infiltration basin - system construction inspection checklist'''.</font size><br>
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Link to this [[Infiltration basin - system construction inspection checklist|table]]</center>
+
Link to this [[Infiltration basin - system construction inspection checklist|table]]<br>
 +
To access an Excel version of form (for field use), click [[ Forms (including field inspection forms)|here]].
 +
 
 
<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
Line 21: Line 23:
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th>Maintenance Item</th>
+
<th>Construction Sequence</th>
 
<th>Satisfactory / Unsatisfactory</th>
 
<th>Satisfactory / Unsatisfactory</th>
 
<th>Comments</th>
 
<th>Comments</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>1. Debris Cleanout (Monthly)</th>
+
<th colspan=3>1. Pre-Construction</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Contributing areas clean of litter and vegetative debris</td>
+
<td>Pre-construction meeting</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Trench surface clean</td>
+
<td>Runoff diverted</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Inflow pipes clear</td>
+
<td>Soil permeability verified</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Overflow spillway clear</td>
+
<td>Groundwater / bedrock verified</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Inlet area cleanr</td>
+
<td>Project benchmark established</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
−
 
 
<tr>
 
<tr>
−
<th colspan=3>2. Sediment Traps or Forebays (Annual)</th>
+
<td>Facility location staked out</td>
−
</tr>
 
−
<tr>
 
−
<td>Obviously trapping sediment</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Greater than 50% of storage volume remaining</td>
+
<td>Temporary erosion and sediment control established</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>3. Dewatering (Monthly)</th>
+
<th colspan=3>2. Excavation</th>
−
</tr>
 
−
 
 
−
<tr>
 
−
<th colspan=3>4. Vegetation (Monthly)</th>
 
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Mowing done per O&M plan</td>
+
<td>Size and location per plans</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Minimum mowing depth not exceeded</td>
+
<td>Side slopes stable</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Undesirable vegetation removed</td>
+
<td>Depth adjusted to soil layer with specified soil type and permeability</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>No evidence of erosion</td>
+
<td>Sub-soil not adjacent to excavation area and stabilized with vegetation and/ or silt fence</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<td>Fertilized per O&M plan</td>
+
<td>Stockpile location not adjacent to excavation area and stabilized with vegetation and/ or silt fence</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>5. Sediment Cleanout of Trench (Annual)</th>
+
<th colspan=3>3. Embankment</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>No evidence of sedimentation in gravel filter</td>
+
<td>Anti-seep collar or filter diaphragm per plans</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Sediment accumulation doesn’t yet require cleanout</td>
+
<td>Fill material per specifications</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>6. Sediment deposition of Basin (Annual)</th>
+
<th colspan=3>4. Final Excavation</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Clean of sediment</td>
+
<td>Drainage area stabilized</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Winter accumulation of sand removed each spring</td>
+
<td>Sediment removed from facility</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Contributing drainage area stabilized and free of erosion</td>
+
<td>Basin floor tilled</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>7. Inlets (Annual)</th>
+
<td>Facility stabilized</td>
−
</tr>
 
−
<tr>
 
−
<td>Good condition</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>No evidence of erosion</td>
+
<td>Removable cap / footplate per plans</td>
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
 
 
−
<tr>
 
−
<th colspan=3>8. Outlet/Overflow Spillway (Annual)</th>
 
−
</tr>
 
−
<tr>
 
−
<td>Good condition, no need for repair</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>No evidence of erosion</td>
+
<td>Initial depth = feet</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>9. Aggregate Repairs (Annual)</th>
+
<th colspan=3>5. Final Inspection</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Surface of aggregate clean</td>
+
<td>Pre-treatment facility operational</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Top layer of stone does not need replacement</td>
+
<td>Contributing watershed stabilized prior to flow diversion</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Trench does not need rehabilitation</td>
+
<td>Inlet and outlet operational</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
 
<td colspan=3>Comments:
 
<td colspan=3>Comments:
−
 
−
 
−
 
−
 
−
 
 
</td>
 
</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td colspan=3>Actions to be taken:
 
<td colspan=3>Actions to be taken:
−
 
−
 
−
 
−
 
−
 
 
</td>
 
</td>
 
</tr>
 
</tr>
 +
</table>
  
−
 
+
<noinclude>
−
 
+
[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Checklist]]
−
</table>
+
[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Infiltration basin, trench, underground infiltration]]
−
[[category:table]]
+
</noinclude>

Latest revision as of 17:29, 4 August 2022

Infiltration basin - system construction inspection checklist.
Link to this table
To access an Excel version of form (for field use), click here.

Project:
Location:
Site Status:
Date:
Time:
Inspector:
Construction Sequence Satisfactory / Unsatisfactory Comments
1. Pre-Construction
Pre-construction meeting
Runoff diverted
Soil permeability verified
Groundwater / bedrock verified
Project benchmark established
Facility location staked out
Temporary erosion and sediment control established
2. Excavation
Size and location per plans
Side slopes stable
Depth adjusted to soil layer with specified soil type and permeability
Sub-soil not adjacent to excavation area and stabilized with vegetation and/ or silt fence
Stockpile location not adjacent to excavation area and stabilized with vegetation and/ or silt fence
3. Embankment
Anti-seep collar or filter diaphragm per plans
Fill material per specifications
4. Final Excavation
Drainage area stabilized
Sediment removed from facility
Basin floor tilled
Facility stabilized
Removable cap / footplate per plans
Initial depth = feet
5. Final Inspection
Pre-treatment facility operational
Contributing watershed stabilized prior to flow diversion
Inlet and outlet operational
Comments:
Actions to be taken:
Retrieved from "https://stormwater.pca.state.mn.us/index.php?title=Infiltration_basin_-_system_construction_inspection_checklist&oldid=60756"

This page was last edited on 4 August 2022, at 17:29.