The EnviroBasin™ is being used successfully as pretreatment to street trees and infiltration on new infrastructure projects in the Canadian Cities of London and Richmond Hill. The EnviroBasin™ meets the Canadian ETV standard for OGSs and was recently awarded Pilot Use Level Delegation (PULD) under the Washington State Technology Assessment Protocol – Ecology, better known as the TAPE program.  

A PULD is granted to new technologies initially to allow the installation and operation of MTDs on monitored sites in Washington. The PULD has been granted for EnviroBasin™ as a pretreatment device to allow monitored field trials and enable the collection of the field data required for the General Use Level Delegation (GULD). The GULD requires the EnviroBasin™ to demonstrate for 50% TSS removal in an influent concentration range of 100 mg/L to 200 mg/L. For influent concentration less than 100 mg/L the effluent goal is 50 mg/L total suspended solids.

Obtaining a GULD is the ultimate goal because it will allow the use of the EnviroBasin™ for pre-treatment across Washington State and help EnviroPod™ advocate the importance of pre-treatment for green infrastructure. We have proven our success under Canadian rules and now we want to demonstrate the success of our innovative pre-treatment device under the meticulous TAPE program.

EnviroBasin™ is simple to incorporate into any infrastructure project and is especially useful for high-density developments lacking in space. The integrated nature and benefits of the device reduce concrete, pipework, the area required for installation, and maintenance requirements, which not only reduces the literal footprint but also reduces the carbon footprint of stormwater treatment.

The precast catch basin has a litter capture basket and multiple patented flow-modifiable components that dissipate energy to prevent sump sediment entrainment, encourage settlement of finer particles, and prevent hydrocarbon escaping.  

The litter capture basket means gross pollutants are separated out and the sump volume is not taken up by trash or leaves, which provides plentiful space for sediments to settle out at the base of the sump and helps prevent nutrients such as phosphorus from soaking leaves entering the storm sewer. Pollutant separation also allows simple and quick hand maintenance of the gross pollutants in the litter baskets 2-4 times a year with mechanical sump maintenance only required every 2-3 years.

If you’re a Washington State Engineer in stormwater and would like a presentation contact us;

Call Toll-free at (877) 651-0566

Book a Meeting - HERE

Link to Washinton Tape Rules -

Link to our Pilot Use Level Delegation (PULD) under the Washington State Technology Assessment Protocol - Ecology, (TAPE Program) - HERE

Learn more about the EnviroBasin™ - HERE


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