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| *Erosion control measures installed appropriately | | *Erosion control measures installed appropriately |
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− | <noinclude>==Related pages== | + | <noinclude> |
| + | ==Related pages== |
| *[[Overview for Infiltration trench]] | | *[[Overview for Infiltration trench]] |
| *[[Types of Infiltration trench]] | | *[[Types of Infiltration trench]] |
| *[[Design criteria for Infiltration trench]] | | *[[Design criteria for Infiltration trench]] |
| *[[Construction specifications for Infiltration trench]] | | *[[Construction specifications for Infiltration trench]] |
− | *[[Operation and maintenance of Infiltration trench]] | + | *[[Operation and maintenance of Infiltration trench]] |
− | *[[Cost-benefit considerations for Infiltration trench ]] | + | *[[Assessing the performance of infiltration trenches and basins]] |
| + | *[[Cost-benefit considerations for Infiltration trench]] |
| *[[External resources for Infiltration trench ]] | | *[[External resources for Infiltration trench ]] |
− | *[[References for Infiltration trench]]</noinclude> | + | *[[References for Infiltration trench]] |
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− | <noinclude>[[category:Construction specifications]]</noinclude>
| + | [[category:Construction specifications]] |
| + | </noinclude> |
CADD based details for pond systems are contained in the section on drawings. The following details, with specifications, have been created for infiltration systems:
- infiltration basin
- infiltration trench
- subsurface infiltration system
- inlet/outlet structures
Construction specifications
Given that the construction of infiltration practices incorporates techniques or steps which may be considered non-standard, it is RECOMMENDED that the construction specifications include the following format and information.
Temporary erosion control
- Installation prior to site disturbance
- Catch basin/inlet protection
- Use of BMP as temporary sedimentation basin
Excavation, backfill and grading
- Timing of grading of infiltration practices (relative to total site development)
- Use of low-impact, earth moving equipment
- Controls to ensure site is not over-excavated
- Restoration in the event of sediment accumulation during construction of practice
- Gravel backfill specifications
- Gravel filter specifications
- Filter fabric specifications
- Observation well specifications
Native plants, planting and transplanting
- Site preparation of planting areas
- Timing of native seeding and native planting
- Weed control
- Watering of plant material
Warning: It is REQUIRED that infiltration systems not be excavated to final grade until the contributing drainage area has been constructed and fully stabilized.
Construction sequence scheduling
- Temporary construction access
- Location of silt fence installation to protect BMPs and downgradient receiving waters
- Removal and storage of excavated material
- Installation of underground utilities
- Rough grading
- Seeding and mulching disturbed areas
- Road construction
- Final grading
- Site stabilization
- Installation of semi-permanent and permanent erosion control measures
- Silt fence removal (often forgotten but an essential step)
Construction observation
- Adherence to construction documents
- Verification of physical site conditions
- Erosion control measures installed appropriately
Related pages