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Line 74: + + − '''<small>*Note:''' Oil Grit Separators do not achieve the 80% removal efficiency required for stand alone application in Ontario, even at very low flow rates.</small>+ +
→Performance Test Results
There are currently eight OGS vendors with ISO 14034 verifications (as shown in the [[Oil and Grit Separator#Testing and Verification|table]] above). The list of manufacturers and test results of all OGS products and other verified technologies can be found [https://etvcanada.ca/home/verify-your-technology/current-verified-technologies/ here]. Sediment removal performance results were relatively consistent across different MTD designs, with slightly more variation at higher surface loading rates (see Graph below). <br>
There are currently eight OGS vendors with ISO 14034 verifications (as shown in the [[Oil and Grit Separator#Testing and Verification|table]] above). The list of manufacturers and test results of all OGS products and other verified technologies can be found [https://etvcanada.ca/home/verify-your-technology/current-verified-technologies/ here]. Sediment removal performance results were relatively consistent across different MTD designs, with slightly more variation at higher surface loading rates (see Graph below). <br>
'''<small>*Note:''' Oil Grit Separators do not achieve the 80% removal efficiency required for stand alone application in Ontario, even at very low flow rates.</small>
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[[File:OGS-Protocol-Webpage-Image.jpg|thumb|300px|In lab testing of a Stormceptor<sup>(R)</sup> OGS device, here seen testing discharge rates and sediment effluent loads at St. Anthony Falls Laboratory in Minneapolis, Minnesota. (Saddoris, et al. 2010)<ref>Saddoris, D.A., McIntire, K.D., Mohseni, O., and J.S. Gulliver, 2010. Hydrodynamic Separator Sediment Retention Testing – Final Report. Minnesota Department of Transportation, St. Paul, MN.</ref>]]
[[File:OGS min Max.png|900px|Average, minimum and maximum sediment removal efficiencies for ISO 14034 verified OGS at seven surface loading rates (n = 10).]]