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

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<center><font size=3>Infiltration basin - operation and maintenance checklist'''.</font size><br>
+
<center><font size=3>'''Infiltration basin - system construction inspection checklist'''.</font size><br>
−
Link to this [[Infiltration basin - operation and maintenance checklist|table]]</center>
+
Link to this [[Infiltration basin - system construction inspection checklist|table]]</center>
 
<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
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</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>SGroundwater / bedrock verified</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
 +
 +
 
<tr>
 
<tr>
−
<td>Inlet area cleanr</td>
+
<tdProject benchmark established</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
−
</tr>
 
−
 
−
 
−
<tr>
 
−
<th colspan=3>2. Sediment Traps or Forebays (Annual)</th>
 
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Obviously trapping sediment</td>
+
<td>Facility location staked out</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 establishedd</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>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>4. Vegetation (Monthly)</th>
+
<td>Size and location per planse</td>
−
</tr>
 
−
<tr>
 
−
<td>Mowing done per O&M plan</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 permeabilityn</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>
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<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 stabilizeds</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>
 
−
<th colspan=3>7. Inlets (Annual)</th>
 
 
</tr>
 
</tr>
 
<tr>
 
<tr>
−
<td>Good condition</td>
+
<td>Facility stabilized</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>
 
<td> </td>
 
<td> </td>
 
</tr>
 
</tr>
−
 
 
<tr>
 
<tr>
−
<th colspan=3>8. Outlet/Overflow Spillway (Annual)</th>
+
<td>Initial depth = feet</td>
−
</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>
+
<th colspan=3>5. Final Inspection</th>
−
<td> </td>
 
−
<td> </td>
 
−
</tr>
 
−
 
 
−
<tr>
 
−
<th colspan=3>9. Aggregate Repairs (Annual)</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 operationall</td>
 
<td> </td>
 
<td> </td>
 
<td> </td>
 
<td> </td>

Revision as of 19:15, 19 March 2013

Infiltration basin - system construction inspection checklist.
Link to this table
<tdProject benchmark established
Project:
Location:
Site Status:
Date:
Time:
Inspector:
Construction Sequence Satisfactory / Unsatisfactory Comments
1. Pre-Construction
Pre-construction meeting
Runoff diverted
Soil permeability verified
SGroundwater / bedrock verified
Facility location staked out
Temporary erosion and sediment control establishedd
2. Excavation
Size and location per planse
Side slopes stable
Depth adjusted to soil layer with specified soil type and permeabilityn
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 stabilizeds
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 operationall
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