A real dehu will cost $00.02 - 00.04, run more efficiently, remove micro-contaminants from the air (hepa filter), and have the strength to shuffle around ALL the air in the basement through the filter. 

Ok everyone,Looking for information on dealing with a "significant contamination" from having an old heating oil tank removed.

As an example, the last meeting was fascinating as we discussed brownfield properties and were introduced to a company who cleans up contaminated properties, bringing them back back to organic certification by reactivating natural occurring bacteria.  

My only word of advice in dealing with some from my claims perspective is I'd take extra time to vet them and make sure they are a reputable operator  (you could probably get a list of banks or car dealers they work for and then contact them to see what their reputation is/if it checks out...some of the banks or car dealers I may have contacts to provide you) ....one other thing to think about is the potential environmental impact as well...ie if they do start hauling wrecked cars, who's responsible for all the fluids leaking on the ground, could they potentially contaminate your property etc.  

I have seen pumpkin sales, Christmas tree sales, fruit stand, boiled peanuts, eyeglasses stand, carpet truck sales, landscaping storage,etc.If you put temporary things on the land to offset taxes then make sure it is not things that could environmentally contaminate the land such as a used car lot etc.

Re-apply grout to areas requiring (shower corners and floors, mostly) and then using colored silicone to match, finish off all areas requiring soft joints.TRIM: Adjust all interior and exterior doors to latch (80, 84); repair all windows for freedom of movement (81); Replace broken window to kitchen (81)FRAMING: Repair over-notched flooring joists (89)EXTERIOR: Remove soil from wood contact (4,11)PAINT: Touch up baseboards after all polly work, walls and doors.ATTIC / PESTS: trap existing rodent infestation using cages, clean out all contaminants, seal off entry points (68) GROUNDS: Replace rotted wood (2), Add drip edge and replace piece of damaged wood behind HVAC unit (6); replace rotted corner boards (7); replace damaged siding and paint, as well as siding screws and loose soffit (9)

In the 90s they did a superfund cleanup and have all those holding ponds to control the ground contamination.  

Soil testing to make sure contaminates are not being introduced into the ground and thus the ground water has to be done if DEC gets involved.

Last one I bought had $40,000 clean up in contamination.

Is the site contaminated, does it have a stream, wetlands. etc?