Customer Reviews

Design of Remediation Systems

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After reading the first three chapters, I found serious errors and deficiencies in Chapter 3, Basic Geology and Hydrology. Although not relevant to design, the authors should know the earth's crust is 0 to 20.5 miles thick as opposed to 40 to 130 ft. thick. The discussion of soil classification systems recognizes the USCS, AASHTO, and USDA sytems, but only discusses the USCS and AASHTO systems. The highway and airport pavement driven AASHTO system is of little relevance to groundwater flow. The USDA system is commonly used and received no discussion. Although the chapter discusses the differences between unconfined and unconfined aquifers, the aquifer properties section is incomplete and confusing as to what properties apply to unconfined aquifers, confined aquifers, or both types of aquifers. Last, the example for Darcy's Law demonstrates a lack of understanding of the basic principles of groundwater flow. The example on page 45 presents an ERRONEOUS answer of 669,500 gpd, where the correct answer is 200,640 gpd. The author's incorrectly used the flow velocity rather than the Darcy Flux or specific discharge to calculate flow. Futhermore, their calculation of pore water velocity requires a discussion of apparent porosity. If one were to use their method of calculating flow, over calcuation of flows would be in the neighborhood of 200-400%.

The book was a little beaten up for "new". Great content,I just wish it was not used looking. Come on Amazon...

It is a good design guideline of this sort in remdiation engineering since it was written from designer's perspective with real examples and spreadsheets for data recording and analyses. However, it would be even better if it included more theoretical background on vapor extraction test to help designers compare with groundwater unsteady pump test theory. There is a minor error in page 216 that motor HP is considered a fuction of motor's efficiecy. Motors are usally rated as output HP.