Patent ID: 7588689

Claim:
A method for decontamination of runoff water which comprises: producing a module by providing a housing having an inside and an outside defined by an open top, closed sides and a closed bottom, providing an elongated standpipe disposed in the housing with a fluid tight connection to the bottom so that the interior of the standpipe is in fluid communication with the outside of said housing to define an outlet from the standpipe, the standpipe having openings therein allowing fluid communication into the standpipe, a cartridge dimensioned, configured and disposed in the housing to cause liquid entering the open top of said housing to flow through the cartridge, said cartridge including at least one of the materials selected from the group consisting of an adsorbent and a filter material whereby liquid flow into the housing will pass through said cartridge into the standpipe and out the outlet and placing the module in a catch basin; directing runoff water to the module and allowing all runoff water in excess of the flow capacity of the module to flow into the catch basin without passing through the module.