Instruct: Classify an Amazon review into positive or negative sentiment.
Query: An Extremely Helpful, Easy to Understand Reference

As principal of a small environmental consulting firm, it is crititcal that I remain up-to-date on environmental requirements affecting my clients. Voluntary Cleanup Program (VCP) requiremnts, also known as Brownfield requirements, are often cumbersome, unclear, and incomplete. Mr. Russ' book, Redeveloping Brownfields: Landscape Architects, Site Planners, Developers, has helped to clarify the general "brownfields" process which is applicable throughout the Country and the specific requirements of Maryland's VCP program. We are greatful for this very valuable guide.