Stormwater Detention

StormChamber systems provide the lowest cost, highest pollutant removal rate underground storm water management system on the market.  StormChamber is an open bottom, arch-shaped, HDPE infiltration chamber which functions in both permeable and non-permeable soils for subsurface retention, detention, conveyance and reuse of storm water, or gray water, designed to overcome the deficiencies of other technologies.  It provides a higher level of nutrient and pollutant removal by taking advantage of the natural biological and physical properties of the soil.  StormChamber systems mimic pre-development conditions by putting post-construction run off back into the ground approximately where it used to go, maintaining base flow to streams, wetlands, lakes, ponds and countering salt-water intrusion in coastal areas.  During "normal" conditions, approximately 50% of stream flow is from base flow.  Base flow comprises 100% of stream flow during low flow periods.  The SedimenTrap component of the StormChamber system eliminates the need for pre-treatment devices and provides a more effective level of sediment and debris removal and retention at a fraction of the cost.  StormChamber is also surprisingly strong, exceeding the AASHTO H-20 wheel load rating by three times.

The chambers are light weight, less expensive, quicker and easier to install than similar technologies. They are installed individually or in groups. A SedimenTrap is placed under the first and last chamber of the row receiving the inflow. A 10" vertical access PVC riser is attached to the chamber directly above the SedimenTrap . Through these risers, vacuum trucks are used to pull out debris and sediments captured within the SedimenTrap.

The chambers are open on the bottom and function just like a septic drain field.  A biomat of micro-organisms forms on the soil and stone underlying the chambers, which metabolizes pollutants and converts nutrients to non-contaminating byproducts.

The Benefits:

• Replicates pre-construction hydrology.
• Highly cost-effective and efficient sediment management.
• Easy, quick and inexpensive to install.
• Helps counter drought conditions by maintaining groundwater base flow to streams and other water bodies.
• Eliminates thermal discharge loadings.
• Replenishes groundwater supplies.
• Achieves higher pollutant removal rates through soil filtration and accelerated microbial actions (bio-remediation).
• Achieves Low Impact Development, LEED and Zero Discharge goals.
• Provides a lower cost and longer effective life alternative to perforated pipe.
• Helps obtain up to 18 LEED points.
• Exceeds AASHTO H-20 Wheel Load Rating by three times.