My plan clearly states why $30,000 houses in Milwaukee don't make sense for me - so whenever I start to second-guess whether I'm buying houses correctly, I re-read my plan and consciously ignore those Milwaukee deals.

A lender (or potential purchaser down the road) will likely require environmental info if there is not a recent history recorded (phase I, II).

Now there are exceptions such as property taxes, environmental liens, municipal liens, etc.If research is not your specialty then get a title search prior to bidding on any properties.

Your sub-conscious mind can not distinguish whats real or not.

I have a BA in Environmental Studies and an MBA with a focus on sustainable/green business.

Thanks for your question.. here is what is happening...At this stage of the development project, I need the insights of several professionals, geotechnical engineer, environmental impact assessment analyst, lawyer, architect, general contractors, real estate consultant etc.

The following was found in a google search:When septic systems are properly designed, constructed, and maintained, they effectively reduce or eliminate most human health or environmental threats posed by pollutants in household wastewater.

Pricing can reflect this also, but I use them on my more complicated projects.Another firm if you are more cost conscious that I use is Gift and Associates.  

A ski resort with hobbit hole like condos.Return the area around my home town to a nice, environmentally friendly area with more trees.

Its a duplex so even if you have an energy conscious tenant as soon as the other side uses more they will turn the heat up so as not to lose out.