See the map below for exact location. It's quite close ... :em18:
Worse still when I listen to radio yesterday morning when Mr. Cheng spoke with a district councillor I just felt that guy is 食x米... :em13: so we should follow up this issue closely.
Just did some research and found the following articles which may answer your question:
http://www.fehd.gov.hk/safefood/report/dioxin/dioxinc.html
http://www.singpao.com/20030429/local/362578.html
... food is a main source of dioxin :em18:
For background of this incident see this one:
http://www.dphk.org/research/envir0205.htm
Those district/legislative councillors should help Tsing Yi residents to fight for relocation of the chemical treatment plant (move out of Tsing Yi) in the long run!