You have to distinguish between charged and convicted. Having a substance that turns out to be fake (allegedly) and marked bills might be enough...

Do I have legal recourse for a failed drug test in this situation?

This is not really a legal recourse issue as much as a question of do employers have the right to hire/fire employees based on the results of drug...

It all depends on the crime you are charged with. Generally, most sentences in Illinois are given day for day credit or in your case 4 years equals...

I would like to know how am I supposed to go about getting in the BAIID program?

The Secretary of state should have sent you the information for installing the BAIDD device soon after receiving your DUI. If you didn't receive it...