请教:买lot䢖房刚签完合同几天却发现地基里有underground storage tank (UST)

Near tank soil has VOC contamination。UST contain oil film in liquid-VOCs, such as benzene, toluene and more. The 7 VOC are those presented in gasoline and paint.

Builder will hire enironmental firm to remove the tank and clear up due to leaking.
Should we still keep this deal? Or swhich a lot? Or back off?

If back off, can we get our deposit (几万）back?

It is safety concern, long term.
应该怎么对待此事？
谢谢。

所有跟帖： 

• 据说VOC提高新生儿abnormality5倍。 -sweetptt- ♂ (0 bytes) () 10/27/2013 postreply 17:50:00

• 听说光清理地下tank就花很多钱，去问问有经验的。 -好酒- ♂ (0 bytes) () 10/27/2013 postreply 19:05:03

• 不懂帮你顶一下。 Is this disclosed when you sign the contract? -sneezy888- ♂ (288 bytes) () 10/27/2013 postreply 23:56:01

• no disclosed as builder just found out after our contract -Avista- ♀ (36 bytes) () 10/28/2013 postreply 11:10:31