For anyone who lives on Bergen St. or St. Marks Avenue in Prospect Heights, between Flatbush and Carlton, you may have noticed there’s an exceptionally loud, obnoxious noise coming from the HVAC unit on the back of an HPD/city-owned building at 516 Bergen Street. We’ve been struggling to get them to fix the unit, which DEP has repeatedly told us is well above the noise levels allowed in the city. If you live anywhere near this, I would urge you to contact the HPD commissioner, Vito Mustaciuolo. His e-mail is MUSTV@hpd.nyc.gov. He’s so far done nothing to solve the problem and it’s really intolerably loud. But the more people contact him about it the better. Thanks.