Suffolk Downs dumps into local creek

Suffolk Downs is in violation of the Clean Water Act, according to the Environmental Protection Agency. The track has apparently been dumping polluted water into a small tributary called Sales Creek -- a discharge that has included animal waste and other contaminated runoff.

Looking at the map, I believe that Sales is the tidal creek that forms part of the border between East Boston and Revere (at Bennington Street) as well as Eastie and Winthrop (at Saratoga Street). The small waterway also appears to run through culverts on the racetrack's infield.

When Sales Creek exits Suffolk -- carrying its animal manure and other waste -- it runs into the Belle Isle salt marsh, protected state reservation land, and then the creek turns and dumps out into the small harbor inlet that separates Logan Airport from Constitution Beach. Does this mean that Suffolk Downs has been polluting the water we've been swimming in for decades?