The best thing for you to do would be to contact a lawyer or two.
This link will get you started, with some very generic information.
Pre-site Inspection
There are a lot of areas that may or may not be affected depending on the scope of the work to be done, having said that there may or may not be different rules/laws to pay attention to.
Testing a medical companies' patient database will be governed by different rules than say an asterix voip system.



