I haven't seen any multi-family units around here on the market but again I haven't really made a conscious effort to look.

Definetly wasn’t trying to do anything illegal ( at least consciously).

What oil containment systems should my bank and i be looking for to make sure this oil is being properly controlled and not turning into an environmental problem.Thank you

In today's world, people are very conscious about drugs, and so long as you are taking action, people (like potential buyers) will understand.Here is a recent example of what we've come to expect:  tenant A complains of pot smoke entering her apartment from tenant B. 

I am a Certified Environmental Consultant and I work with Abatment Companies Every Day!

A good environmental consulting company can help by providing things such as a mold survey of the unit (before she moves in). 

I am currently a Peace Corps Volunteer serving in Paraguay, South America, working on Agricultural/Environmental/Health projects in my assigned rural community. 

About a year ago they made a conscious choice to go for higher quality sponsors.   

I just need to have systems in place so that i can show them options to make a more conscious decision.

@Tyler Smith I live in State College as well for school studying environmental engineering.