This document is the EcoStream Solid Lid WA DOE Standard Detail. EcoStream biofilter details, diagrams and specifications provided.

The EcoStream Biofilter is a biofiltration stormwater treatment technology that relies on physical, chemical and biological mechanisms to remove total suspended solids, total phosphorus, total nitrogen, heavy metals, oil and grease, trash and bacteria.

The EcoStream plan view with solid lid diagram shows the throat inlet, 36” solid lid, rip-rap, underdrain and beehive grate.

The profile view diagrams shows the throat inlet, beehive grate, 36” solid lid, rip-rap, growth media, filter media, gravel, underdrain, bypass and outlet assembly. The 3rd diagram shows the solid lid centered, solid lid at vault edge, vault width and length.

An EcoStream biofilter chart has model numbers, vault size, media filtration area, minimum inlet to outlet depth, overflow to outlet depth, design treatment rate, bypass standpipe and solid lid size values.

Specifications explain internal components, filter media/vegetation and precast concrete vault. Performance specifications state that the stormwater filter system shall be an online or offline design based on local requirements, it shall have no moving parts and is designed to remove 80% of suspended solids.