Hi,

I wanted if anyone has more update on the following about installing new equipment in lamma power station
in the 1st phase project aiming at reducing emission of gases that contribute to smog and acid rain.

The installation of gas desulfurisation system???

"Lamma Island power station cleans up its act to meet pollution-reduction targets
Jul 7th, 2009 by admin."

The thing I am concerned about is their slag heap on the other side of Sha Po. I suspect that coal dust blows directly off this and gets into our air. Probably as <pm2.5 as well.

Thanks Alan for your typically pedantic reply. Obviously what I am concerned about is the dust. Not whether it is defined as coal or slag. I do not believe the spraying is effective as I get black residue which looks suspiciously like coal dust on my balcony. Unless it is soot, which means the chimneys are blowing back. As for the size of the particles, I agree that the ones you can see are bigger than 2.5u but coal dust can be as small as 1u.

Source <url> http://www.engineeringtoolbox.com/parti ... d_934.html</url>

There have been several tests of suspicious black dust on Lamma rooftops done over the years, but none has found it to be mainly coal/slag/soot, just the usual "suspended particles" found in air all over HK, according to HK Electric.

It would be interesting to do a new, independent test and publicise the detailed test results. Probably quite expensive?

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LG, yes you can hardly trust a survey commissioned by the suspected polluter. I've seen various tests over the years and local labs have a habit of giving non specific banal statements when in fact they lack the ability to do deeper analysis.

Normally when it comes to black soot or black dust the immediate suspect is diesel. I used to live under the flight path of Kai Tak and for years I thought it was aircraft fuel residue which made my curtains black...but double decker Euro zero buses passing by every 5 minutes were the more likely suspects.

In the absence of local diesel polluters, the next suspect surely is the only industrial facility on Lamma, which happens to be a coal fired power station.

I don't think the black stuff has been deposited by the birds.

I'm sure the huge tankers passing by several times an hour contribute some what as well.

Interesting read: http://www.gizmag.com/shipping-pollution/11526/

I would accept that bunker fuel used by ships and ferries is a major polluter in Hong Kong, but prevailing winds would not carry pollution from the Lamma Channel onto my balcony. I still suspect the power station, which is much closer.

Anyone who has worked with consultants knows that results can be massaged without committing fraud. Its a case of he who pays the piper calls the tune.

Alan..Why would you think that my concern about pollution is only personal to me?

I tell you what Alan. I'm fed up with your unnecessary remarks. Like many people before me, I've actually had enough. You'll soon only have yourself to moderate.