This one was found on the corner of 17th and Treat streets.
An enthusiast for all things culture, Christy looks for journalistic inspiration in ethnic art galleries and in graffitied alleyways. When she’s not people watching at the BART stations, she’s deciphering Spanish on the streets, observing men’s fashion trends and watching the Burberry adorned break dancer on 24th street.
More by Christy Khoshaba
I first learned about this on Blockboard (disclosure: I work for Blockboard) and then did more research.
These spots are used to mark which storm drains have been treated for mosquito abatement. The color indicates the inspection cycle.
http://www.pbs.org/idealab/2011/03/how-dotspotting-began-with-colored-dots-on-drains-in-san-francisco066.html
Pretty cool.
We did a profile on the mosquito abatement folks a while back:
http://missionlocal.org/2010/06/streetscience-bloodthirsty-females-foiled-by-bikes/
Hi Stephen, Thank you for this information! Best, Christy
It means it’s going to get a disabled yellow ramp thing.