T-VSSI BMPs at Pennypack Ecological Restoration Trust (PERT)
Over the summer and fall of 2006, T-VSSI researchers constructed 5 demonstration BMPs at PERT.
- Infiltration Trenches
- Stormwater Wetland
- Parking Lot Infiltration Gallery
- Riparian Buffer
- Upland Stormwater Wet Ponds
Following the construction and planting of the BMPs, the researchers conducted an inspection to verify that the BMPs meet the requirements of the plans and specifications. During the first year post construction, the researchers repaired or restored newly planted vegetation that needed to be replaced due to die-off or damage from extreme weather.
T-VSSI BMPs at Villanova University
- Bioinfiltration Traffic Island
- Green Roof
- Infiltration Trench
- Pervious Pavers
- Pervious Concrete/Porous Asphalt Comparison
- Treatment Train
Integrated Monitoring Plan
The purpose of the Integrated Monitoring Plan is to standardize the monitoring procedures of the T-VSSI’s research effort. This Integrated Monitoring Plan expands the typical stormwater management monitoring programs to include ecological criteria as well as their normal Stormwater requirements. The T-VSSI’s inclusion of ecological criteria responds to the current trend in stormwater facility design to mimic wetland systems and functions. The revised monitoring program incorporates bio-infiltration beds, wetlands, riparian buffers, and other wetland focused BMPs.
The stormwater monitoring strategy focuses on assessing flow volumes, rates, and pollutant loads for wet weather flows entering and exiting the BMPs. As deemed appropriate, each site is equipped with rain gauges, water sampling devices, and flow level recorders. Measurements of stormwater flows into and out of the BMP provide data on the volumetric capacity of the BMP and its ability to retain, infiltrate, or dampen stormwater flows. With respect to water quality sampling, stormwater, infiltration, overflow, and sediments are analyzed for a host of parameters including: pH, dissolved oxygen, temperature, fecal coliform, turbidity, conductivity, total suspended solids, dissolved solids, chlorides, nutrients and metals.
The wetland function monitoring criteria are based on wetland monitoring and success evaluation guidance developed by the Army Corps of Engineers (ACOE). In the Wetlands Engineering Handbook (2000), the ACOE outlines evaluation criteria to assess the effectiveness of wetland structure and function. Correspondingly, the wetland function monitoring component of the Integrated Monitoring Plan includes the collection, analysis and reporting of soil conditions, sedimentation rate, vegetation and faunal usage data essential to assessing the success of wetland and riparian buffer BMPs.
In addition to the Integrated Monitoring Plan which is specific to this research effort, the T-VSSI research team will develop monitoring recommendations to other private or public stormwater management projects.