JMA02P003 262 270 Main Street Development Stormwater Management Report

Komline AquaShield is placed across the outlet pipe opening to facilitate an even distribution of influent runoff across the filter treatment area. Crushed recycled landscaping glass can be used as an alternative to the top pea gravel layer which further enhances colorful viewscape options for the Aqua-Ponic™. Figure 1. Diagram of Aqua-Ponic™ Biofiltration System showing the top pea gravel layer, plant stabilization filter media, wicks, sump, effluent stubout pipe, and observation port. The sump serves as a water reservoir for the vegetation during quiescent periods. A series of wicks are suspended from the base of the plant stabilization bed via rubber grommets (eyelets). The wicks extend downward to near the base of the sump. Using capillary action, water is wicked up to the plant stabilization filter bed which serves to provide a sustainable supply of water and any soluble nutrients and metals not trapped in the filter bed during a runoff event. Treated water in excess of the sump storage volume exits the system via the outlet opening just below the base of the filter bed. Each Aqua-Ponic™ unit is constructed of lightweight and durable Polymer Coated Steel (PCS) to provide long term operational and structural functionality. Aqua-Ponic™ units are shipped with all internal components in place according to the model size. For aesthetic reasons it is the responsibility of others to choose either the pea gravel or any recycled glass landscaping stone for the top bed layer. It is also the responsibility of others to specify, acquire and plant the vegetation. AquaShield™ does not specify the plants for Aqua-Ponic™ systems but can assist where warranted. INSPECTION & MAINTENANCE Maintenance frequency for the Aqua-Ponic™ will ultimately be determined by site-specific pollutant loading conditions. Inspections of plants, top gravel layer and the upper portion of the plant stabilization filter media can be accomplished from the surface without special tools. It is recommended that periodic inspections following installation determine a site-specific maintenance cycle to ensure functionality of the media and the vegetation. Page 3 of 6