The second edition of this book responded to the change in remediation
techniques by adding a chapter on in situ remediation and
altering the remainder of the chapters to include in situ ideas in the
technical discussions. Many other books have been published concentrating
primarily on in situ methods with only a brief mention of
aboveground treatment methods. The fact is that the remediation field
has moved away from the main subject of this book, aboveground
treatment design methods.
Why do a third edition then? The answer is simple. Aboveground
treatment equipment is still a very important part of our treatment
alternatives, and no other book available provides the reader with the
unique design criteria and the detailed knowledge of these specific
treatment methods. So, for this third edition, I decided to eliminate
the in situ methods and make this purely an aboveground treatment
publication.