books.google.ca - This text presents a balanced treatment of environmental engineering by combining engineering concepts with the importance of environmental ethics. This third edition highlights sustainable development and emphasizes the need for engineers to become even more environmentally responsible during this time...http://books.google.ca/books/about/Introduction_to_Environmental_Engineerin.html?id=vI0kNlm_imIC&q=groundwater&utm_source=gb-gplus-shareIntroduction to Environmental Engineering