A new commercial site with limited land space in Stafford County, VA, required
a new stormwater management system to manage runoff from roofs, parking
lots and other impervious surfaces.
Engineers designed a system using a combination of stormwater Best
Management Practices (BMPs) in a Low Impact Development (LID) approach
to achieve runoff reduction. The engineers included a stormwater filtration
system prior to infiltration to meet nutrient removal requirements enacted to
protect the Chesapeake Bay watershed.
After considering removal capabilities, size, and long term maintenance
costs, engineers selected a Jellyfish Filter with a curb inlet configuration. The
Jellyfish Filter is an advanced stormwater treatment technology that combines
pretreatment and membrane filtration in a compact stand-alone solution. This combined treatment approach provide the
needed water quality before sending clean, filtered water into the infiltration gallery, providing a long-term, smart approach to
reduce maintenance costs and runoff volume.
The small and shallow vault is possible as a result of the high flow Jellyfish Filter membrane cartridges and superior pollutant
removal performance. The Jellyfish Filter provides curb-level treatment and maintenance upstream of infiltration. Annual
inspection is achieved at grade through the large hatch opening. Maintaining the 15-inch, light-weight (less than 10-pounds
each) Jellyfish cartridges can be performed from grade. The cartridge tentacles can be removed, rinsed with a garden hose and
re-used, reducing maintenance costs.