30% Reduced Bioretention Footprint
Without sacrificing water capacity, treatment, or quality, Marino Cell can reduce the size of standard bioretention
A study conducted by Geosyntec examined the difference between standard bioretention and bioretention with 6″ or 12″ of Marino Cell installed beneath. The analysis estimated the facility footprint size needed to achieve 80% average annual runoff capture for five rainfall gauges in urban areas throughout California. What did the research find?
Marino Cell reduces bioretention footprints by an average of 30% (with 12″ Marino Cell installation) without sacrificing any stormwater management capacity
The footprint reduction is attributed to the 93% porosity of the system, which provides additional detention storage in the facility.
Using the research study’s San Jose Airport gauge as an example, the standard bioretention footprint size was 590 cubic feet when lined and 560 cubic feet with infiltration (at a rate of 0.2 inches per hour). To achieve the same water treatment volume, the footprint sizes of the bioretention devices shrunk to 500/480 cubic feet (with 6″ of Marino Cell) and 420/400 cubic feet (with 12″ of Marino Cell).
Standard bioretention is often space prohibitive, presenting design challenges to fit everything while simultaneously meeting regulation standards. Marino Cell is the perfect solution: you can add stormwater capacity to any “daylighted” raingarden simply by installing Marino Cell below, allowing you to decrease the bioretention footprint size without sacrificing storage.
EPA SWMM was used to run hourly models for each configuration for a 10-year rainfall period for a one-acre 100% impervious catchment. A 5-inch/hour drawdown rate was assumed to estimate the outflow rate for the underdrain.
Soil. Stormwater. Sustainable Infrastructure.
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