Rainwater management - Filters

Hello Everyone! I am working in a project, which includes the following types of surfaces: -Impervious roof areas -Garden areas -Impervious vehicle circulation areas -Parking area with green pavement We are analyzing the following actions to manage the rainwater in the project site: -Stormwater tank: it will be provided a stormwater tank, for capture rainwater from roofs and reuse it in flux fixtures (toilets and urinals) and in irrigation. But only a part of the roofs will be connected to the stormwater tank. -Green pavement: the parking area will be implemented with green pavement, in order to promote the natural infiltration. -Impervious vehicle circulation areas and roofs (roof surface that will not discharge the water to the tank): we are considering two options: -Option 1: infiltration on site: infiltration wells and/or infiltration pipes (infiltrate rainwater on the ground). -Option 2: Discharge the rainwater into a surrounding channel (by pre-treatment using filters to remove suspended solids). My question is the following: Can we achieve the compliance of the credit by this second option, similarly to LEED v3 SSc6.2 credit by using filters with TSS removal rate>80%? Or we would not meet the credit's requirements because this rainwater is sent outside the Leed project boundary? Thanks in advance!