Design Assist, Installation, and Operation / Maintenance of
Bio-Retention Systems.
|
 |
| Design Analysis |
- Consult with Civil Engineering firms to determine viable locations and water quality volumes (WQv) for Bio-Retention and Rain Garden Systems.
- Provide soil sampling with 3rd party testing for soil classification.
- Provide Operation and Maintenance plans to engineers for inclusion into NOI.
- Attend NOI public hearings as requested.
|
| Installation |
- Provide turnkey construction services.
- Or
- Consult with and provide construction assistance to site contractors to build pre-engineered Bio-Retention systems.
|
| Annual Operation & Maintenance |
| Visual Inspection: |
Witness and document pre and post storm conditions checking for malfunctions, long-term ponding, washouts, plant material failure, soil profile analysis.
|
| Infiltration Capacity Testing (Optional): |
Provide one infiltrometer test and documentation per year for Ksat determination. |
| Or |
| Synthetic Runoff Test (Optional): |
- Provide tanker truck or hydrant to fill the WQv and test the infiltration time.
- Pollutants can be added and combined with influent and effluent water sampling.
|
|
 |
| Monitoring of Soil and Water: |
Water: Provide manual or automated first flush influent and effluent water sampling. All water quality testing would be performed by 3rd party testing. The frequency of testing would be determined by the owner and/or order of conditions, with a minimum of one test. Water testing would evaluate Influent and Effluent water samples for TSS, DIN, TP, TPH-ZN, ph and Hydrogen ion.
|
Soil: Order of Conditions and/or Owner would determine the need or the desired level of monitoring. As a monitoring benchmark, an annual soil sample would be collected and 3rd party tested to evaluate concentrations of Sodium (NA), Dissolved Inorganic Nitrogen (DIN), Total Phosphorus (TP), ph, Total Petroleum Hydrocarbons in the Diesel range (TPH-D), and dissolved metals specifically Total Zinc (ZN). |
|
 |
| Plant maintenance: |
Conditions are harsh and vary greatly from site to site. Sometimes certain plant species do not perform well in specific environments and need to be replaced with a different species or varietals. Plant material may need periodic cutting, division, or may need intermittent low level organic fertilization.
|
| Photo analysis monitoring: |
Photos are taken to monitor plant growth, density, and seasonal effect. If applicable they are also used to demonstrate Storm Water Management Phase II compliance.
|
| |
