This IS a good book, in many ways, but I found two seperate instances (cases) when specific and necessary equations were NOT anywhere in the book, and I hadn't brought a reference to the test which contained what I needed. These two cases were in geotech and in hydrology. I like the book, on the whole, and I studied from it almost exclusively (MISTAKE!). Yes, the choice to study from it mostly exclusively, using only a few other references was *my* choice, but I really do suggest that users of this book consider carefully before doing the same.
The problem is that it's so large a book that you really do need to use it for a LOT of time before really knowing where to find all the references you might need within it, but by the time you've done this, you discover that you are still going to have to get equally familiar with several other very large references. Basically, just get all your references NOW, and use them all together so you have time to make them a composite study/reference tool.
For environmental, I recommend the Civil Handbook, or the water and solid waste books by Tchobanoglous, et al. Also, if you're doing the environmental depth, find a good chemistry reference to review, because Lindburg DOESN'T CUT IT! Neither for Transportation, tho he sort of says that up front, and we all know you need the HCM and green book.