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Sponsored by the Hazardous, Toxic, and Hazardous Waste Engineering Committee of the Environmental Council of the Environmental and Water Resources Institute of ASCE. Nanomaterials in the Environment offers the most current knowledge on the environmental impact of materials and products developed using nanotechnology. Nanomaterials are revolutionizing electronics, medicine, transportation, and many other industries, but they pose risks to living beings and ecosystems that are barely understood. The 23 chapters in this book consider the science of nanomaterials, their behavior in the environment, risk assessment and toxicology, and the future of nanomaterials. Topics include: basic physical-chemical nature of nanomaterials; technologies for nanomaterial characterization, assessment, testing, and monitoring; behavior, fate, and transport of natural and engineered nanomaterials in water, air, soil, sediments, and constructed environments; environmental hazards and risk assessment; nano-ecotoxicology for animals and humans, microorganisms, plants, and ecosystems; ethical, legal, and social implications; responsible nanotechnology; and green nanomaterials. With contributions from the leading researchers in nanotechnology, this book is an essential reference for scientists, practicing engineers, government officials, process managers, and students.
Nanotechnology --- Nanomechanics --- Soil properties --- Risk management --- Soil analysis --- Ecosystems --- Water supply systems --- Soil water --- Particle size distribution --- Environmental aspects. --- Nanomechanics --- Soil properties --- Risk management --- Soil analysis --- Ecosystems --- Water supply systems --- Soil water --- Particle size distribution
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Sponsored by the Technical Committee on Ports and Harbors of the Coasts, Oceans, Ports, and Rivers Institute of ASCE Waterfront Facilities Inspection and Assessment supplies engineers with guidelines and tools for inspecting and evaluating the condition of waterfront structures located in seawater and freshwater environments. Inspections are essential to an effective waterfront facility management program that ensures public safety, reliable service, environmental protection, and reduced maintenance costs. Because distress to a waterfront structure may not be recognizable from above water, the inspection must include an assessment of the extent and severity of deterioration from above and underwater. This Manual of Practice provides guidance on eight different types of inspection and explains how to match inspection types to project needs. It considers existing waterfront facilities that are constructed of concrete, masonry, metals, composites and wood; facility locations may be near-shore, waterfront, riverine, or inland. Guidelines are not limited to the structure alone, but rather include comprehensive coverage of all aspects of the facility, including fender systems, mechanical and electrical utilities, appurtenant structures, and anchor systems. Recommendations on standards of practice and estimation of service life are included, as well as discussions of documentation, reporting, and several administrative issues. An extensive appendix addresses special considerations for a variety of specific structure types and systems, such as fixed utilities, equipment, mooring hardware, topside paving and drainage, and safety features. Other appendixes outline the types and causes of defects; decribe specialized inspection techniques, such as infrared thermography and ground-penetrating radar; and define of inspection nomenclature and key terms. Covering the engineering and technical requirements for conducting above water and underwater facility assessments, MOP 130 is a valuable, comprehensive resource for owners, operators, and engineers involved in operating, maintaining, inspecting, and repairing waterfront structures.
Harbors --- Hydraulic structures --- Inspection --- Harbor facilities --- Water supply systems --- Underwater structures --- Waterfront structures --- Electrical systems --- Structural systems --- Ports and harbors --- Inspection --- Inspection --- Inspection --- Harbor facilities --- Water supply systems --- Underwater structures --- Waterfront structures --- Electrical systems --- Structural systems --- Ports and harbors
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How can water resource agencies make smart investments to ensure long-term water reliability when the future is fraught with deep climate and economic uncertainty? This study helped SEDAPAL, the water utility serving Lima, Peru, answer this question by drawing on state of the art methods for decision making under deep uncertainty. These methods provide techniques for evaluating the performance of a water system over a wide range of plausible futures and then developing strategies that are robust across these futures. Rather than weighting futures probabilistically to define an optimal strategy, these methodologies identify the vulnerabilities of a system and then evaluate the key trade-offs among different adaptive strategies. Through extensive iteration and collaboration with SEDAPAL, the study used these methods to define an investment strategy that is robust, ensuring water reliability across as wide a range of future conditions as possible while also being economically efficient. First, on completion, the study helped SEDAPAL realize that not all projects included in the Master Plan were necessary to achieve water reliability, and the utility could save 25 percent (more than USD 600 million) in investment costs. Second, the study helped focus future efforts on demand-side management, pricing, and soft infrastructure, a refocusing that is difficult to achieve in traditional utility companies. Third, the study helped SEDAPAL gain the support of regulatory and budget agencies through the careful analysis of alternatives. Fourth, the study allowed the utility to postpone lower priority investments, and to analyze future options based on climate and demand information that simply is not available now.
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This article examines the effect of water pricing policies on farmers' water saving behaviors, using original water user group (WUG) data from a reservoir irrigation system in China. The introduction of volumetric water pricing at the group level, to replace area-based pricing, induces institutional change to prevent each member's overuse of water when the volumetric price levels are moderate. Depending on the initial conditions, the multiple pathways of change lead to new institutional arrangements, with all of them contributing to water savings. However, when the price is set high enough, many farmers exit a WUG for private irrigation. This tendency is associated with an increased probability that the remaining members do not undertake institutional change and that they do not end up saving water. This may be due to the increased management difficulties among the remaining members whose fields are separated by former members who have now opted out for private irrigation across the WUG. As a result, we do not find evidence that the reservoir water is saved at high volumetric price levels.
Collective action --- Common pool resource management --- Institutional change --- Irrigation --- Social capital --- Town water supply and sanitation --- Water & industry --- Water conservation --- Water price --- Water resources --- Water supply & systems --- Water supply and sanitation --- Water supply and sanitation governance and institutions
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