Since the Anderson Avenue group will not be designing the filtration of the system, we decided it would be a good step forward to look into various methods of filtration for the client to look at later.
Cartridge filtration was considered, which uses hydraulic head to filter stormwater through a sand-based cartridge system. This proposed system would use more than ten cartridges. From an estimate from Contech, this cartridge filtration system would cast upwards of $80,000.
The team also evalutated Hydrodynamic Seperators (HDS), but there was no size that would fit inside of the vault.
More filtration options are to be considered for the client at a later date.