I’m worried about low production/low pressure/contamination.  

This can be from a number of factors including leaching from neighboring contaminated land, but most commonly mobile home parks can fail the test due to stupid things that owners did in the past such as burying trash (results in becoming a landfill) or installing gas tanks (either commercially or for their own use).

If you don't understand Brownfield properties, Benzine contamination, quarterly soils testing - nobody does - hire a competent environmental firm.

Always be carful when looking at sites that are, or were, gas stations, factories, laundry or dry cleaning facilities and other uses that could contaminate the soil.

Houses next to the refinery were uninhabitable from the refinery contaminants. 

yes- just this week, i've reviewed four loans for multi-family properties that have contamination from prior use that was remediated. lender just needed help understanding risk. 

You could run into soil contamination if they did. 

Nefarious folks may try dumping oil, chemicals, etc. on your land and contaminate the soil.

The area is known for contamination of underground water due to oil extractions & heavy industries.

This structure can also be used when the EAT is unwilling to park legal title to the replacement property for various reasons such as environmental contamination concerns.