Urban Slobber and its Filtration

betcha it doesnt do a damn thing about Nitrate -Nitrogen. It is a start but the problem with California is that so much of it is already paved over. Weve modified many of our regs and ordinances in the Eastern STates (even NY) in order to promote riparian buffer zones for new development and add on cities. The "gun rights" people are all twisted up about this because it smacks of govt control, but if these dwinkies could see that its cheaper to control a problem before it manifests itself its always cheaper.
Whereas Manhattan is one big sewer, in cities like Philly and DC they have invested in billion dollar repairs to stormwater collection and disharges in order to collect and treat properly (we have, in some areas, Nitrates at a level of less than 10 ppm). We have a nearby indicator of an oceans health , namely the Delaware and Chesapeake Bays, We have to monitor these bodies to see how bad (or good) our runnoff controls are acting. All these SMURFFS are not new, (except for the feedback computer gizmos, They hadnt worked in the past because THEY MUST BE MAINTAINED, and maintenance is always the first thing trimmed from state budgets)