Given that this is a tech site, I think a lot of us would recognize the ambiguity in this sentence as a problem with design of the language. In this case, it is the way legal documents are written. As an earlier comment pointed out, Maine's own legislative manual says not to use the Oxford comma.
The solution to this ambiguity is to introduce other language constructs into the so called "legalease". This really should be analysed and corrected for future laws.
One suggestion is that they could introduce bullet points into the legal documents. Another possibility is that lists could also be explicitly declared through a list indicator... i.e. All lists must be put in parentheses and put in a delimited format. They should really consult architects and teachers of computer languages when standardizing on a format. But the point is that there should be no ambiguity when reading the document.