RWM-DM

Rainwater Management is proud to offer our ETV-verified and tested Oil/Grit Separators (OGS). We offer two versions of the RWM-DM series OGS. The ETV Canada testing protocols are the latest standard in Canada that the Stormwater Treatment community refers to for OGS systems.

Rainwater Management offers the RWM-DM¹ and RWM-DM¹-OS series OGS systems that were tested to the same original ETV testing protocols as the majority of OGS units widely accepted in the Industry. These original testing protocols allowed the inlet pipe settled sediment to count towards the overall claimed TSS removal. This is currently the utilized protocol in Canada.

Rainwater Management also offers the RWM-DM and RWM-DM-OS series that meet the most recent and more stringent ETV testing protocols. These new testing protocols included a variation in the testing that did not allow you to include sediment that settled in the inlet pipe during testing to be counted towards the stated TSS removal. This protocol results in a lower overall claimed TSS removal and is currently not utilized in Canada.

The RWM-DM-OS series OGS systems have lower weir heights than the RWM-DM series systems and specifically target oil spill capture and retention while still removing sediment. The overall TSS removal does not change significantly with the OS units because more rainfall occurs during the lower intensities.

Local Manufacturing

The concrete components of our OGS units are supplied by local pre-casters across British Columbia, Alberta and Saskatchewan. Manitoba is serviced by Saskatchewan.

In Ontario we work with a well-established consulting firm, Echelon Environmental, who in turn work with local pre-casters.

Flexible Configuration

The system is available in both inline and offline options and can be used as a bend structure as it can handle multiple inlet pipes that can be as close as 45 degrees to the outlet depending on the pipe and manhole size.

Contact us to discuss which OGS is best suited for your application.