This module discusses methods of obtaining table salt from seawater. Topic areas considered include: (1) obtaining salt by solar evaporation of seawater in holes; (2) obtaining salt by boiling seawater in pots; (3) how table salt is obtained from seawater in the Philippines; and (4) methods of making salt by solar evaporation of seawater in the…

This survey was undertaken by the Peace Corps to assist Senegal in identifying energy needs in rural areas and in implementing alternative, renewable energy projects at the community level. This book describes the sample, energy use, energy needs, and resources. Fifteen villages of fewer than 5,000 people were selected for data collection. The…

This manual is intended for use by Peace Corps trainees and volunteers as a resource in gaining understanding and knowledge of basic irrigation principles and practices. To be most useful, the manual should be used during training as a teaching guide and instructional tool. Although it provides useful charts, drawings, structural diagrams, and…

By far, the greatest risk to health from radon occurs when the gas enters the house from underlying soil and is inhaled. The U.S. Environmental Protection Agency (EPA) is studying ways to reduce radon in houses, including methods to remove the gas from water to prevent its release in houses when the water is used. While this research has not…

The heat collecting capacity of the earth and or the earth's ground waters and surface waters exist as potential energy sources for home heating and cooling. Techniques and devices associated with use of the earth's thermal energy capabilities are presented and evaluated in this four-chapter report. Included in these chapters are: (1) descriptions…

The materials in this educational packet are designed for use with students in grades 4 through 7. They consist of an overview, three lesson plans and student data sheets, and a poster. The overview describes how the freshwater marsh is an important natural resource for plant, animal, and human populations and how the destruction of marshes causes…

Recent studies have focused attention on the fact that residents of inner-city neighborhoods are subject to greater amounts of pollutants than are other neighborhoods of large cities. In this study, the premise is set forth and investigated at the metropolitan scale, seeking to discover differences of impact between the center city and its…

This report presents the results of a pilot test by the Texas Water Quality Board (TWQB) of a manpower planning methodology developed by the U.S. Environmental Protection Agency (EPA), Office of Water Programs. Project outputs are described and illustrated in sections of the report dealing with work to be done, organizational staffing plan,…

This document is an instructional module package prepared in objective form for use by an instructor familiar with the basic concepts of the water world. Included are objectives, instructor guides, student handouts and transparency masters. The module considers natural cycles, natural relationships, pollution and the effect of man in these natural…

This document is an instructional module package prepared in objective form for use by an instructor familiar with the basic concepts of biology related to water/wastewater technology. Included are objectives, instructor guides, student handouts, and transparency masters. The module considers organisms and their relationship, cell structures,…

This workbook serves as a self-learning guide to basic mathematics and treatment plant calculations and also as a reference and source book for the mathematics of sewage treatment and processing. In addition to basic mathematics, the workbook discusses processing and process control, laboratory calculations and efficiency calculations necessary in…

Outlined are practices and procedures that should be followed in order to protect and fully realize the benefits of sewer systems and also to maximize service and minimize inconveniences to the public. Written in practical terms, the manual is designed to be of immediate use to municipal employees and others involved in sewer maintenance…

This unit investigates through three activities the importance of the Great Lakes in international trade. A student workbook and a teaching guide are provided. Included in the teacher's manual are an overview of the unit, a materials list, objectives, teaching suggestions, evaluation items, and answer keys to student activities. In the first…

The relationships of Ohio's canals to drainage patterns, population centers, commerce and population growth are the focus of this unit for secondary school classes. Presented are both a student workbook and teacher's guide. Included in the latter are a materials list, objectives, suggested instructional approaches, evaluation items, and a key to…

This document is the student manual for a self-study course on managerial principles as they relate to the water or wastewater treatment field. Each of the seven lessons is concerned with a segment of the management process and corresponds to reading material in the accompanying text. An objective and subjective test portion is included in each…