Steel beams, and vapor barriers have been installed but the inspector said it is just a Band-Aid.

Unless a good vapor barrier was installed below the concrete slab (rarely done correction in residential construction today and never 10 years ago) moisture vapor will migrate through concrete.

btw: sand would absorb any residual contents and when filled to the top of the tank, evacuated all volatle vapors of any concerns.

Assurances, promises, and words are like vapor... if a person decides to do nothing later on, there is no way to force any partner to physically perform.

@Holly Scott why do you think a vapor barrier is needed?

(vapor barrier and foam insulation)* Ridge vent is totally clogged with dust, dirt or something that is preventing flow* There is a heat cord on the roof below where the furnace is located so I am sure the roof is hot in the winter and melts the snow which causes ice damn in the section.* vents and returns are in ceiling..so won't the heat come down and go right back up the return?

The contractors that I know do not have experience with basements as they seem to require special considerations like vapor barriers, foundation grading, etc.

You do want to lay a vapor barrier down- 6-10 mil thick polyethylene.

@Luke LaczakIt sounds like a vapor barrier or sound deadener.

it has organic vapor relief and will help masking the odor a little.  1) open the blinds if any and let as much sunlight in a possible.2) open all windows, let it vent for a few hours before the cleanup.