Difference between revisions of "Constructing infiltration systems"
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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> | + | <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. |  |
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. |  |
| Sediment entering the basin from exposed soils on the construction site and from the side slopes clogs the system. |  |
Identifying infiltration areas with signs notifies staff, subcontractors and others to keep heavy machinery out, ensuring that soils are not compacted. |  |
| 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. |  |
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. |  |