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<tr>
 
<tr>
 
<th rowspan=2> </th>
 
<th rowspan=2> </th>
</tr>
 
<tr>
 
 
<th colspan=3><center>Dewatering Best Management Practices</center></th>
 
<th colspan=3><center>Dewatering Best Management Practices</center></th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<th>Sedimentation/ Settling Only (Sediment Traps/ Basins)</th>
+
<th><center>Sedimentation/ Settling Only (Sediment Traps/ Basins)</center></th>
<th>Filtration Only (Silt Fence, Dewatering Bag, Geotextile, etc.)</th>
+
<th><center>Filtration Only (Silt Fence, Dewatering Bag, Geotextile, etc.)</center></th>
<th>Pretreatment + Chemical Flocculants + Settling/Filtration **</th>
+
<th><center>Pretreatment + Chemical Flocculants + Settling/Filtration **</center></th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>

Revision as of 18:45, 27 March 2019

Expected performance benefits for various dewatering practices.
Link to this table

Dewatering Best Management Practices
Sedimentation/ Settling Only (Sediment Traps/ Basins)
Filtration Only (Silt Fence, Dewatering Bag, Geotextile, etc.)
Pretreatment + Chemical Flocculants + Settling/Filtration **
Water quantity
Flow attenuation Secondary benefit Little or no benefit Little or no benefit
Runoff volume reduction Secondary benefit Little or no benefit Little or no benefit
Water quality
Soil erosion Little or no benefit Little or no benefit Little or no benefit
Sediment control Primary benefit Primary benefit Primary benefit
Nutrient loading Secondary benefit Secondary benefit Secondary benefit
Pollutant removal
Total suspended solids Primary benefit Primary benefit Primary benefit
Total phosphorus Secondary benefit Secondary benefit Secondary benefit
Heavy metals Secondary benefit Secondary benefit Secondary benefit
Floatables Primary benefit* Little or no benefit Secondary benefit
Oil and grease Primary benefit* Little or no benefit Secondary benefit