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Proprietary treatment manholes, hydrodynamic separators, oil grit separators, are all names for devices that use similar hydrodynamic principles to remove sediment from stormwater runoff in a standard precast structure. Typically used as either stand-alone treatment or as pretreatment to another stormwater control measure these devices have been around for over 30 years. Despite this long history, they are still one of the least understood stormwater control measures when it comes placement, sizing, and formulating a competitive bid.
The regulatory landscape has not helped with no national testing or approval standards and a confusing landscape of stormwater regulations. In the last 5 years though, some standardization has coalesced around the two most widely referenced testing and approval processes, Washington Department of Ecology, and New Jersey Department of Environment Protection.
However, with stormwater regulations varying by state, county, city, and often watershed, there is still a lot of room to make missteps and guidance is not easy to find. This webinar will review and focus on the following to try to help clarify the landscape:
Attendees will receive a PDH certificate for 1.0 credit.
June 29, 2022: Water and Nutrient Cycles
March 23, 2022: Talking Trash
February 22, 2022: Stormwater Filtration
January 19, 2022: Stormwater Treatment System Design
October 28, 2021: The Many Faces of Flow Controls