mr. pickins referenced last thursday covered california and announced the rate for the exchange and the cost will go up by a weighted percentage of 4.2% and covered california region four which comprises the city and county of san francisco saw the largest weighted increase of 6.6%. the other changes in the regions were a reduction of 1% and those areas and increase of 6.3% in orange county. among the five health plans that will be available in san francisco and some blue cross has the largest weighted increase and those that stay with blue cross will have an increase of 10 to 14%. kaiser has the lowest weighted increase at one point 6% and those consumers will have a change of a reduction or a increase of 4% and blue child and health net and chinese community health plan also. finally the environmental -- supervisor cohen has introduced two measures at the board of supervisors to improve air quality in san francisco. one enhanced ventilation for sensitive use development is consistent with a resolution passed in 2013 by this commission commission and require ventilations for certain develop