Greetings
I think it's fair to say that the whole area is desperately gasping for air.
Here is a useful link that compares the Air pollution Index as used by our lying Govt with the index being used in the EU.
http://api.greenpeace.org.hk/index.php?lang=en
There is a table on the following page which also illustrates the discrepancy between HK's "World City" advice on activity levels for each range of API and that used in the USA.
http://www.cleartheair.org.hk/api.htm
Do a bit of calculating/adjustment based on the two pieces of above data and it must be clear for all to see that we are most certainly suffering some serious poisoning and most of the time should be staying indoors!!.
But hey we can't have the money generating slaves knowing that now can we
Don't forget it was Donald Tsang who once said that one of the biggest mistakes the Govt made a few years back was allowing the Air quality monitoring devices to be placed at street level.Much better to have them on the tops of the highest buildings where the air is slightly clearer!
As far as the power station on Lamma goes i can tell you that Pok Fu Lam receives sickening levels of rank air from Lamma when the wind is from the Southerly direction(the "summer months").During the Winter months the prevailing wind direction is N/N easterly and that brings the nastiness from China to the whole of HK.
Many Tung Chung residents who are living in public housing estates there are very worried and their health is noticably affected, the luckier of the older folk are leaving to live with relatives elsewhere.I have a friend who lives on the 20th+ floor and he very seldom can even see the street level clearly.There are resident concern groups mobilising there and they are trying to raise awareness.
Peace