A person could conclude that they are stuck between a rock and a hard place. On the one hand we have a professional responsibility to disclose the information necessary for our users to make informed decisions; on the other hand we have a professional responsibility to comply with the letter and the spirit of fair lending laws.
Think of it this way: if you were a minority borrower (and sooner or later we're all minorities) and you were turned down for a loan, it would be human nature to be looking through your copy of the appraisal report and whatever other dopcumatation available in the loan file to see if there are any indications of discrimination. What would you think if you saw the following sentence in the appraisal report:
"The subject property is located in a high crime area evidenced by a high incidence of gang related grafitti, bullet holes, chalk outlines and crack houses".
Would not some people conclude that such a description of the personal characteristics of the residents of that neighborhood might have figured into the decision by the lender to deny them credit?
Here's a rule of thumb: if you can quantify the effect on value of a neighborhood attribute there might be a reason to note it in your descriptions. If there's no constructive use for the information then perhaps it doesn't need to be in an appraisal report.
For instance, we can say that high crime rates detract from value, but can we say how much of the loss is attributable to that one factor? How much for the crime rate and how much because of the poor schools or the lack of services or the distance to retail centers or the lack of employment?
Your refinery is a bit different because that is an external influence that can be isolated out through comparisons with other neighborhoods of like composition but which lack their own refinery. Likewise for a freeway or a landing pattern at an airport.
Besides, a lender has access to other sources of information if they want to use criteria such as crime rates and racial makeup and religious orientation in their loan decisions. An appraiser need not contribute to or enable the illegal use of such information by a lender.
I'm not trying to be a bleeding heart, but we do have a responsibility to be dispassionate and emotionally detached when we write these descriptions. We should not allow our personal dislike for green shag carpeting or dog doo in the backyard to have undue influence on the assignment at hand, which is to value the realty within the context of its market segment.