Concentrated Animal Feeding Operations (CAFOs) and Nitrogen Conversions in the Groundwater Environment
EPA's regulatory focus on concentrated animal feeding operations has historically concentrated on potential surface water impacts from direct discharges as well as nutrient-laden runoff....
Introduction
Historically, animal waste was considered a valuable fertilizer and thus land was applied for sustainable on-farm production of crops and animals. However, with the shift to large production...
Fate of Nitrogen Compounds in Animal Waste Lagoons
This chapter examines the fate of nitrogen compounds in animal waste lagoons. Topics include nitrogen in animal waste lagoons; transformations and removal; and subsurface transport....
Clogging of Animal Waste: An Overview
This chapter examines research addressing the mechanisms that play a role in the clogging of lagoon liners by animal waste....
Evaluating Seepage Losses and Liner Performance at Animal Waste Lagoons using Water Balance Methods
This chapter discusses techniques for evaluating seepage losses from existing animal waste lagoons under field conditions....
Evaluation Plan for the Group Evaluation of Soil Stabilization and Dust Suppression Products
This Evaluation Plan describes the nature and scope of an evaluation to determine the performance aspects and the environmental impacts of soil stabilization and dust suppression products. A number of...
Putting Down Roots
Phyto-covers are environmentally friendly and cost-efficient landfill barriers. Compared to traditional clay or geofabric caps, phyto-covers require less maintenance and are more friendly...
The Development of Fishery Habitat Value in Created Salt Marshes
This Coastal Ocean Program project was designed to examine the functional developmental rate of ten created marshes ranging in age from 3 or 15 years in the Galveston Bay system of Texas....
Stranding Networks and Marine Mammal Management
Marine Mammal Stranding Networks respond to a large number of marine mammal strandings each year. There is a potential to collect a variety of data that can be used for management purposes....
Quality Assurance of Contaminant Measurements in Marine Mammal Tissues
The National Institute of Standards and Technology (NIST), in conjunction with the National Oceanic and Atmospheric Administration (NOAA) is developing a program to improve the quality...
Northwest Straits National Marine Sanctuary Study
This paper describes the potential application of the National Marine Sanctuary program to the Northwest Straits study area in northwestern Washington State, USA. Several observations...
Studies on Meiofauna on Rio de Janeiro Coast, Brazil
This work presents a preliminary survey of the meiofauna groups and the distribution, abundance and temporal changes of the community at Praia Vermelha (Rio de Janeiro, Brazil), in July...
Instream Flow Needs Below Peaking Hydroelectric Projects
A method has been developed to assist in the determination of instream flow needs below hydroelectric projects operated in a peaking mode. Peaking hydroelectric projects significantly...
Fish Protection at Water Intakes Using a New Signal Development Process and Sound System
American Electric Power Company, Inc., is exploring the feasibility of using a patented signal development process and sound system to guide aquatic animals with underwater sound. Sounds...
Economic Analysis of Canal Animal Protection Measures
Justification of canal animal protection measures has been, to a degree, driven by environmental and social constraints and as a result, large expenditures of funds to protect ungulates...
Dioxins and Human Health
Few environmental issues have attracted as much attention and controversy as the dioxins. Considerable expense has been incurred investigating effects in human populations and laboratory...
Risk Analysis: Is EPA Changing the Rules?
Recent actions by EPA seem to indicate a departure from past practices in health risk assessment. In the past, findings that a substance is an animal carcinogen have usually led to regulatory...
Will the World Face Up to Its Ever-Worsening Environmental Problems�
This article is based on interview with Gerald Barney, a consultant to the President's Council on Environmental Quality and other staff members of that organization. Among...
University of Wisconsin: A Success Story in Continuing Engineering Education
Each year, five times as many civil engineering practioners take short courses offered by the University of Wisconsin's Engineering Extension (WEX) as at any other school....
Return to search