Will the PAMF Vents Exhaust Cross Property Lines?


Sunnyvale is a windy city. The wind does not always blow south. In fact, the wind blows from the southeast to the north 25%  of the time!

Information needed within hours, Caruso’s replacement Planner, Steve Lynch requests details regarding the Palo Alto Medical Foundation PAMF Parking Garage Exhaust Vents.

Lynch emphasizes to Mahlstedt urgency of the answers needed by the end of the same day to meet the PAMF project report deadline and advises him to “assume southward exhaust direction since it cannot vent across property lines.”

Why did Lynch advise the architect to “assume south” when the wind blows toward the north as well?

And why was an Air Quality Impact Analysis omitted from request? Is the air healthy?

(Click image to enlarge)

Steve Lynch requests Parking Exhaust Vent Stats on May 5, 2009

Steve Lynch requests Parking Exhaust Vent Stats on May 5, 2009

Lynch’s questions on item #3 ask for:

  • Details of the air vents on the north property line of 301 site. Ideally I would like a spec or cross-section for the report and a brief description addressing expected exhaust noise, exhaust direction (assume southward since it cannot vent across property lines), and hours of operation.

Sunnyvale is a windy city. The wind does not always blow south. According to the Palo Alto Medical Foundation PAMF DEIR, the wind potentially could blow the Carbon Monoxide, Hazardous Air Pollutants, and other Toxic Air Contaminants known to cause cancer northbound into the residential neighborhood.

As quoted from the PAMF DEIR:

  • Climate and Topography (pg 5 Air Quality), Winds are mostly from the northwest (off the bay), occurring 50% of the time. Wind flow from the southeast occurs about 25% of the time, with light and variable winds occurring the other 25% of the times. Wind speed on average is about 5 miles per hour.

So, “assuming south” does not take into consideration that at least 25% of the time, the wind could possibly blow the exhaust across the property line northbound into the residential neighborhood.

Or not? And what are the measurements of the toxic air contaminants?

With those important questions to consider, why wasn’t an Air Quality Impact Analysis performed prior to the June 23,2009 Sunnyvale Council Hearing for full evaluation and disclosure for the Sunnyvale Council Members and the public?

Particularly when the vent structures are places so closely to residential homes?

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