Recently Verified by ETV Canada

Hydro International Downstream Defender

Downstream Defender

CB Shields stormwater filter device

CB Shield

Two distinct stormwater treatment technologies, the CB Shield and the Hydro International Downstream Defender, have recently been verified by ETV Canada through the testing, facilitation and guidance of Good Harbour Laboratories (GHL).

Why GHL?:  As an ETV member, GHL has good working relationships with the program manager, Globe Performance Solutions (GPS), and the other verifiers and is able to act as ‘translators’, explaining the technical requirements and guiding each client through the entire verification process and procedure.

Description:  The CB Shield is a catch basin insert that traps sediments and pollutants as they flow into the frame and grate from roads/streets. The sloped plate of the CB Shield acts like a shield by deflecting water to the side wall of the catch basin while trapping the sediments in the basin until they get pumped out.

The Downstream Defender is an oil grit separator designed to remove sediment, oils and floatables from stormwater using a low energy vortex motion. This motion causes the sediments to spiral downward where they are captured in the basin below while the oils and floatables rises to the top. The treated water is then safely released back to the environment.

Challenges: The CB Shield is an innovative technology for which there were no pre-existing test protocol and this was their first ever test.  GHL worked with the client and the verifier to develop an acceptable protocol that can be used to test the device as well as provide guidance to the CB Shield team regarding the entire procedure.

The Downstream Defender team was very experienced, having done testing and verification in other jurisdictions.  In both cases GHL was able to use their experience to guide them through the verification process and to overcome technical challenges.

Benefit: ETV gives the CB Shield additional credibility in the market and reduces the risk to its customers.  For Hydro International, their Downstream Defender is now approved for sale in the province of Quebec, which requires that all stormwater treatment products be ETV approved. And GHL added two new successful stormwater testing achievements to their resume.


The Canadian Environmental Technology Verification (CETV) Program


CETV (www.etvcanada.ca) is a nationally recognized program that provides an independent and reliable process for verifying environmental performance claims of innovative technologies, processes and products. The CETV process provides objective and quality-assured performance data on environmental technologies so that users, developers, regulators, and other stakeholders can make informed decisions about purchasing, applying and regulating these technologies. As a result, this will help accelerate the adoption of new environmental technologies in the market.

Since the CETV program may be applicable to most technologies, it does not adhere to technology specific protocols, but rather, is governed by a General Verification Protocol (GVP) that outlines the general requirements for a verification process and ensures consistency of verifications. That said, a number of technology specific procedures and protocols have been developed to serve as a guidance in the verification process, including the Procedure for Laboratory Testing of Oil-Grit Separators. It should be noted that this CETV OGS Procedure (protocol) is very similar to that of the New Jersey Centre for Advanced Technology (NJCAT) so data generated for NJCAT may be accepted for verification by CETV without requiring additional testing. However, one major difference between the NJCAT protocol and the CETV protocol is that the former allows for witness testing at a manufacturer’s facility while the latter does not. In this case re-testing would be required in order to meet the requirements of the CETV Program.

Global Performance Solutions

The CETV program is owned by the Canadian Federal Government through Environment Canada and is administered by Globe Performance Solutions (GPS) www.globeperformance.com.  GPS collaborates with a consortium of Canada’s leading testing and research facilities and experts who provide the actual testing and verification activities. GHL is a member of the GPS Consortium that specializes in stormwater treatment and can provide either testing or verification. However, as per CETV requirements, GHL may not complete both testing and verification for the same project; the testing and verifying organizations for any given project must be completely independent.


For organizations that are seeking to verify their technologies, but still require testing to be completed, the process of obtaining CETV approval typically follows the process below:

  1. The first step would entail initiating contact with GPS and submitting an initial pre-screening application. Once the technology has gone through the initial review stages, a formal application would be submitted to GPS, whose team works with clients to identify prospective testing and verification options.
  2. The second step involves working with a selected testing organization to produce a Technology Specific Test Program (TSTP) and confirming with GPS that the TSTP meets requirements set out in the GVP. Of importance is that any test data collected be of sufficient quality and quantity in order to support the technology’s performance claim statistically at a 95% level of confidence. Upon review and approval of the TSTP, the applicant may commence with testing activities.
  3. The third step involves submission of the completed test report to GPS, as part of the overall formal application to the CETV Program.
October 3, 2016