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The Illusion of Certainty
This book provides an understanding and appreciation of the risk assessment process and the ability to objectively interpret health risk values. Included is an explanation of the uncertainty inherent in the assessment of risks as well as an explanation of how the communication and characterization of risks can dramatically alter the perception of those risks. Case studies illustrate the strengths and limitations of characterizing certain risks. Using the accepted risk assessment paradigm proposed by the National Research Council, these case studies illustrate which risk values have merit and why other assessments fail to meet basic criteria.
Drinking Water Distribution Systems
Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamina...
Investigative Strategies for Lead-Source Attribution at Superfund Sites Associated with Mining Activities
The Superfund program of the US Environmental Protection Agency (EPA) was created in the 1980s to address human-health and environmental risks posed by abandoned or uncontrolled hazardous-waste sites. Identification of Superfund sites and their remediation is an expensive multistep process. As part of this process, EPA attempts to identify parties that are responsible for the contamination and thus financially responsible for remediation. Identification of potentially responsible parties is complicated because Superfund sites can have a long history of use and involve contaminants that can have many sources. Such is often the case for mining sites that involve metal contamination; metals occ...
Public Water Supply Distribution Systems
The Water Science and Technology Board has released the first report of the Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks, which is studying water quality issues associated with public water supply distribution systems and their potential risks to consumers. The distribution system, which is a critical component of every drinking water utility, constitutes a significant management challenge from both an operational and public health standpoint. This first report was requested by the EPA, as the agency considers revisions to the Total Coliform Rule with potential new requirements for ensuring the integrity of the distribution system. This first report ide...
Utilizing Effective Risk Communication in COVID-19
This book demonstrates how a novel decision-aid, called a Benefit-Risk Characterization Theater (BRCT), can be used to: · Significantly improve accurate communication of health risks from exposure to COVID-19; and · Assess how to best contain and control COVID-19. To date, there have been far-reaching ramifications based on ineffective risk communication when clarifying these health endpoints. A BRCT is a familiar, theatrical chart representation of 1,000 people, with the risks and benefits shown by blackened seats. Since health outcomes can easily be put into such a chart, we show how BRCTs can be used objectively by professionals, the media and lay people. It allows characterization and ...
Food Matters
From the award-winning champion of culinary simplicity who gave us the bestselling How to Cook Everything and How to Cook Everything Vegetarian comes Food Matters, a plan for responsible eating that's as good for the planet as it is for your weight and your health. We are finally starting to acknowledge the threat carbon emissions pose to our ozone layer, but few people have focused on the extent to which our consumption of meat contributes to global warming. Think about it this way: In terms of energy consumption, serving a typical family-of-four steak dinner is the rough equivalent of driving around in an SUV for three hours while leaving all the lights on at home. Bittman offers a no-nons...
Manipulation of Groundwater Colloids for Environmental Restoration
This valuable resource discusses several strategies of manipulating colloids for environmental restoration, identifies advantages and disadvantages of each strategy, and considers obstacles limiting the application of each strategy. Approaches evaluated include the following: Chemical modification of subsurface systems to mobilize or deposit colloids in situ Altering the mobility of microorganisms to improve delivery of microbes for bioremediation Manipulating colloids or biocolloids (bacteria) to change aquifer permeability to either enhance bioremediation or create in situ barriers Introducing modified colloids, surfactants, and emulsions to control colloid mobility or to increase recovery...
Groundwater Contamination from Stormwater Infiltration
Groundwater Contamination from Stormwater Infiltration examines topics such as urban runoff, constituents of concern, treatment, combined sewage characteristics, relative contributions of urban runoff flow phase, salts and dissolved minerals, treatment before discharge, outfall pretreatment, and local pretreatment.
