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

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<center><font size=3>• Infiltration trench/basin – operation and maintenance checklist'''.</font size><br>
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<center><font size=3>'''Infiltration basin - system construction inspection checklist'''.</font size><br>
+
Link to this [[• Infiltration trench/basin – operation and maintenance checklist|table]]</center>
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Link to this [[Media filter system - construction inspection checklist|table]]</center>
 
 
<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
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</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th>Construction Sequence</th>
+
<th>Maintenance Item</th>
 
<th>Satisfactory / Unsatisfactory</th>
 
<th>Satisfactory / Unsatisfactory</th>
 
<th>Comments</th>
 
<th>Comments</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>1. Pre-Construction</th>
+
<th colspan=3>1. Debris Cleanout (Monthly)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Pre-construction meeting</td>
+
<td>Contributing areas clean of litter and vegetative debris</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Runoff diverted</td>
+
<td>Trench surface clean</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Soil permeability verified</td>
+
<td>Inflow pipes clear</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Groundwater / bedrock verified</td>
+
<td>Overflow spillway clear</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Project benchmark established</td>
+
<td>Inlet area cleanr</td>
 
<td> </td>
 
<td> </td>
 +
<td> </td>
 +
</tr>
 +
  
 
<tr>
 
<tr>
−
<td>Facility location staked out</td>
+
<th colspan=3>2. Sediment Traps or Forebays (Annual)</th>
 +
</tr>
 +
<tr>
 +
<td>Obviously trapping sediment</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Temporary erosion and sediment control established</td>
+
<td>Greater than 50% of storage volume remaining</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>2. Excavation</th>
+
<th colspan=3>3. Dewatering (Monthly)</th>
 +
</tr>
 +
 
 +
<tr>
 +
<th colspan=3>4. Vegetation (Monthly)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Size and location per plans</td>
+
<td>Mowing done per O&M plan</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Side slopes stable</td>
+
<td>Minimum mowing depth not exceeded</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Depth adjusted to soil layer with specified soil type and permeability</td>
+
<td>Undesirable vegetation removed</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Sub-soil not adjacent to excavation area and stabilized with vegetation and/ or silt fence</td>
+
<td>No evidence of erosion</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 +
 
<tr>
 
<tr>
−
<td>Stockpile location not adjacent to excavation area and stabilized with vegetation and/ or silt fence</td>
+
<td>Fertilized per O&M plan</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 +
 
<tr>
 
<tr>
−
<th colspan=3>3. Filter Fabric Placement</th>
+
<th colspan=3>5. Sediment Cleanout of Trench (Annual)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Fabric per specificationss</td>
+
<td>No evidence of sedimentation in gravel filter</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Placed per plan location</td>
+
<td>Sediment accumulation doesn’t yet require cleanout</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>4. Aggregate Material</th>
+
<th colspan=3>6. Sediment deposition of Basin (Annual)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Size as specified</td>
+
<td>Clean of sediment</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Clean / washed material</td>
+
<td>Winter accumulation of sand removed each spring</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Placed properly</td>
+
<td>Contributing drainage area stabilized and free of erosion</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
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<tr>
 
<tr>
−
<th colspan=3>5. Observation Well</th>
+
<th colspan=3>7. Inlets (Annual)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Pipe size per plans</td>
+
<td>Good condition</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Under-drain installed per plans</td>
+
<td>No evidence of erosion</td>
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
<tr>
 
−
<td>Inlet installed per plans</td>
 
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
<tr>
 
−
<td>Pre-treatment devices installed per plans</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
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<tr>
 
<tr>
−
<th colspan=3>6. Vegetation</th>
+
<th colspan=3>8. Outlet/Overflow Spillway (Annual)</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Complies with planting specifications</td>
+
<td>Good condition, no need for repair</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Topsoil complies with composition and placement in specifications</td>
+
<td>No evidence of erosion</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 +
 
<tr>
 
<tr>
−
<td>Permanent erosion control measures in place</td>
+
<th colspan=3>9. Aggregate Repairs (Annual)</th>
−
<td> </td>
 
−
<td> </td>
 
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<th colspan=3>7. Final Inspection</th>
+
<td>Surface of aggregate clean</td>
−
</tr>
 
−
<tr>
 
−
<td>Dimensions per plans</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Check dams operational</td>
+
<td>Top layer of stone does not need replacement</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Inlet / outlet operational</td>
+
<td>Trench does not need rehabilitation</td>
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
<tr>
 
−
<td>Effective stand of vegetation and stabilization</td>
 
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
<tr>
 
−
<td>Contributing watershed stabilized before flow is routed to the facility</td>
 
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
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</td>
 
</td>
 
</tr>
 
</tr>
 +
 +
  
 
</table>
 
</table>
 
[[category:table]]
 
[[category:table]]

Revision as of 18:53, 19 March 2013

• Infiltration trench/basin – operation and maintenance checklist.
 Link to this table
Project:
Location:
Site Status:
Date:
Time:
Inspector:
Maintenance Item Satisfactory / Unsatisfactory Comments
1. Debris Cleanout (Monthly)
Contributing areas clean of litter and vegetative debris
Trench surface clean
Inflow pipes clear
Overflow spillway clear
Inlet area cleanr
2. Sediment Traps or Forebays (Annual)
Obviously trapping sediment
Greater than 50% of storage volume remaining
3. Dewatering (Monthly)
4. Vegetation (Monthly)
Mowing done per O&M plan
Minimum mowing depth not exceeded
Undesirable vegetation removed
No evidence of erosion
Fertilized per O&M plan
5. Sediment Cleanout of Trench (Annual)
No evidence of sedimentation in gravel filter
Sediment accumulation doesn’t yet require cleanout
6. Sediment deposition of Basin (Annual)
Clean of sediment
Winter accumulation of sand removed each spring
Contributing drainage area stabilized and free of erosion
7. Inlets (Annual)
Good condition
No evidence of erosion
8. Outlet/Overflow Spillway (Annual)
Good condition, no need for repair
No evidence of erosion
9. Aggregate Repairs (Annual)
Surface of aggregate clean
Top layer of stone does not need replacement
Trench does not need rehabilitation
Comments:



Actions to be taken:



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