Major environmental issues arising for Haiti recovery

Haiti earthquake event was very shocking to us all.
Particularly, thinking about environmental problem, the impact of the earthquake may be very big as to be pricelss.

According to the article, problems such as medical waste, demolition material, landslides, and hazardous chemicals are expected not to be resolved easily.

I am thinking about which enviromental policy as pre or post step can be relevant to the situation.

http://www.unep.org/Documents.Multilingual/Default.asp?DocumentID=608&ArticleID=6454&l=en