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<td>Months later, the construction project is complete. '''The basin captures rainfall from a small rain event but it doesn’t infiltrate'''. Costly repairs are required in order for it to function properly.</td>
 
<td>Months later, the construction project is complete. '''The basin captures rainfall from a small rain event but it doesn’t infiltrate'''. Costly repairs are required in order for it to function properly.</td>
 
<td>[[File:Basin captures rainfall from a small rain event but it doesn’t infiltrate.PNG|center|100px]]</td>
 
<td>[[File:Basin captures rainfall from a small rain event but it doesn’t infiltrate.PNG|center|100px]]</td>
<td>'''Identifying infiltration areas with signs''' notifies staff, subcontractors and others to keep heavy machinery out, ensuring that soils are not compacted.</td>
+
<td>This photo shows a system that has been properly protected after construction. Contributing drainage areas have been stabilized and the basin has been protected with the orange silt fence from both sedimentation and compaction from vehicle traffic.</td>
 
<td>[[File:system that has been properly protected after construction.PNG|center|100px]]</td>
 
<td>[[File:system that has been properly protected after construction.PNG|center|100px]]</td>
 
</tr>
 
</tr>

Revision as of 16:47, 2 March 2016

Constructing infiltration systems.
Link to this table

Constructing infiltration systems

The final step when all contributing drainage areas have been stabilized

Noncompliant construction Compliant construction
In these pictures, inlets to the infiltration basin were not protected, and sediment enters the basin from exposed soils on the still active construction site. The basin was not protected from sedimentation, and sediment runs off the side slopes and is deposited in the basin.
Inlets to the infiltration basin were not protected.PNG
Heavy equipment should work from outside of the infiltration basin so soils are not compacted. In this photo, the basin has been over-excavated as designed. The excavator sits outside the basin and uses a frost ripper to loosen the soils. The same process is used to incorporate a sand/compost mix into the basin.
Heavy equipment work from outside infiltration basin so soils not compacted.PNG
Sediment entering the basin from exposed soils on the construction site and from the side slopes clogs the system.
Sediment entering the basin clogs the system.PNG
Identifying infiltration areas with signs notifies staff, subcontractors and others to keep heavy machinery out, ensuring that soils are not compacted.
Identifying infiltration areas with signs.PNG
Months later, the construction project is complete. The basin captures rainfall from a small rain event but it doesn’t infiltrate. Costly repairs are required in order for it to function properly.
Basin captures rainfall from a small rain event but it doesn’t infiltrate.PNG
This photo shows a system that has been properly protected after construction. Contributing drainage areas have been stabilized and the basin has been protected with the orange silt fence from both sedimentation and compaction from vehicle traffic.
System that has been properly protected after construction.PNG