Those that were experienced booms where, for example, real estate that was worth maybe $100,000, such as a polluted automotive junk yard, went on  sale for over $2 million because it was zoned "Industrial" allowing use of volatile solvents for manufacturing (one type of cannabis distillation). 

Understand that many professionals use this app, so there is a lot of competition so what will make you stand out from everyone else is education and persistence.Make your day productive with tools that are actually working and not drive around polluting the world.Good investing...

There’s also entitlement risk – the chance that government agencies with jurisdiction over a project won’t issue the required approvals to allow the project to proceed; environmental risks that range from soil contamination to pollution; budget overruns and more, such as political and workforce risks.Location is another idiosyncratic risk factor.

Meanwhile Californians continue to create more pollution from driving than anything else...Wake me up when they start getting rid of mandatory parking minimums.

There are many issues: pollution from Tiajuana river closes the beach many times a year, class of area, lack of infrastructure spending, perception/reputation, traffic, etc.   

Properties that are polluted with hazardous materials on them.

Miniminzing the manufacturing of cement which pollutes our air, water and soil and minimizing the need for more land fills with which to dump millions of tons of reusable materials.

Would one pollute the other if they're separate entities with the same partners or subset of partners?

Here are some links for due diligence in Massachusetts and New Hampshire - (Moderator, no affiliation)City-data.com (demographics, building, crime, pollution, commerce)Neighborhoodscout.com (schools, crime, propery appreciation – paid site)Psk12.com (schools)GIS data – more than geological, cultural & socialhttp://www.mass.gov/mgis/massgis.htmhttp://www.granit.unh.edu/

They do wear out.Or a community will be forced to connect to a central facility if there is a pollution problem impacting the ground water.