North Carolina real estate lawyer for a underground oil tank

[Huiping S.]

Our sewer scope plumber found one underground oil tank which just next to the sewer access spot. The seller's disclosure check this oil tank as No. We cancelled our offer because of the oil tank and asked to refund our duel diligence money back but seller said they don't know there is an oil tank and they stay in this home for 20 years now. The sewer was blocked by tree roots and there is a new service on outside.

Can anybody have a recommendation for a lawyer of RTP NC area? Does realtor have responsibility for this cheating from seller?

Thanks.

Huiping