Controlling Volatile Emissions at Hazardous Waste Sites, Pollution Technology Review No. 126, John R. Ehrenfeld, Joo Hooi Ong, Wil- liam Farino, Peter Spawn, Michael Jasinski, Brian Murphy, Douglas Dixon, and Edwin Rissmann, Noyes Data Corporation, Park Ridge, NJ, (1986), 412 pages, [ISBN No.: 0-8155-1063-21, U.S. List Price: $54.00

This book is divided into three parts. Each part involves an U.S. EPA sponsored study dealing with volatile organic emissions from treatment, storage, and disposal fa- cilities (TSDF). These emissions are classified as being hazardous under the Resource Conservation and Re- covery Act (RCRA). The emphasis is on landfills, landfarming, surface impoundments, and tanks.

Part A was prepared by John R. Ehrenfeld and Joo Hooi Ong of Ar- thur D. Little, Inc. Emission control technologies are discussed with ef- ficiencies and costs identified. Sur- face impoundments, tanks, landfills, and landfarming are discussed in separate sections. Sufficient details are provided for making decisions on alternate control strategies.

Part B was prepared by William Farino, Peter Spawn, Michael Jas- inski, and Brian Murphy of GCA Corporation and is a compilation of air emission release rate (AERR) models for volatile organic com- pounds (VOCs) from TSDFs. In ad- dition to the four emphasis areas, VOC emissions are discussed for treatment units and drum handling and storage. Particulate emissions from waste piles are also discussed. The lack of pertinent data is a serious restriction of the models. Although for estimating purposes, each area discussed has a model that gives sat- isfactory results.

Part C is a compilation of the physical-chemical properties and cat- egorization of RCRA wastes that was prepared by Douglas Dixon and Ed- win Rissmann of Versar, Incorpo- rated. The data are compound specific. The data are extracted from readily available sources. Many of the entries were estimated with meth- ods found in the Handbook of

Chemical Property Estimation Methods (Lyman et al., 1982).

By combining the three U.S. EPA reports into one source, this book provides a comprehensive treatment of VOC emissions from hazardous waste treatment facilities. Parts A and B are excellent treatments of the information available in 1984. Part C is a very convenient compilation of physical-chemical data; much of what is needed in the AERR models. The one strong negative that I found with the book was the poor print quality. Parts of the letters did not print, making the reading, for me, somewhat tiring.

Irvin A. Jefcoat, Ph.D., P.E. Chemical Engineering Department The University of Alabama P.O. Box 870203 Tuscaloosa, AL 35487-0203

Water Distribution Systems: Simu- lation and Sizing, Thomas M. Wal- ski, Johannes Gessler, and John W. Sjostrom, Lewis Publishers, Inc., Chelsea, MI, (1990), 321 pages,

List Price: $82.00 [ISBM NO.: 0-87371-233-11, U.S.

In recent years, computer model- ing has proved to be a reliable tool for solving problems related to water distribution systems. This book de- scribes the capabilities of computer models and their use in analyzing these systems. The discussion pro- ceeds from a general perspective ap- plicable to an understanding of any of the computer programs popularly used to model water distribution sys- tems to specific detail regarding the model developed by the authors. A copy of this model, WADISO (Water Distribution Simulation and Opti- mization computer software) is pro- vided with the book.

The authors' expertise in the plan- ning, design, operation, and mod- eling of water distribution systems is obvious throughout the book. Rel- evant rules-of-thumb are presented whenever helpful. The applications of computer modeling to the prob- lems of water distribution systems

are clearly and realistically detailed. The different modeling capabilities and requirements of smaller utilities are described and accounted for. The authors are certainly not "model happy'' advocates of simulation for simulation's sake, but instead pres- ent a balanced view of the benefits of computer modeling.

The book is divided info three sec- tions. The first section gives a broad description of the principles of mod- eling water distribution systems. Tlne discussion follows the chronological order of the modeling process, from selection of a specific model through application of the model to problems of interest. Chapter topics include model selection and entry of system data, development of water con- sumption data, model calibration, problem solving, and pipe sizing with the final model. Missing from this section, though it would prove help- ful, is a listing of available models and their capabilities and limita- tions. The chapter describing the types of problems a computer model can be used to solve is excellent and should motivate anyone involved with water distribution systems to consider computer modeling. This section of the book should prove val- uable to anyone interested in aplply- ing computer models to water distribution systems.

The second section of the book introduces the basic ideas and meth- ods of computer analysis of pipe networks and describes their incor- poration in the WADISO mctdel. Historically, investigators have fa- vored the use of loop equations to analyze pipe networks. The authors provide a valuable comparison of the loop and node methods and al- though they clearly favor the node approach (having selected it for the WADISO model), their description of both methods is thorough and fair. Other considerations, such as the use of the Hazen-Williams or Darcy-Weisbach equation for fric- tion losses, are also described. Chap- ter topics include the general pipe network problem, the loop and node methods used to solve this problem, the node method as it is used in the WADISO model, convergence char- acteristics of this model, and opti-

Environmental Progress (Vol. 10, NO. 4) N 8 November, 1991