2010 NUTR1R06iii The Water Environment Research Foundation, a not-for-profit organization, funds and manages water quality research for its subscribers through a diverse public-private partnership between municipal utilities, corporations, academia, industry, and the federal government. WERF subscribers include municipal and regional water and wastewater utilities, industrial corporations, environmental engineering firms, and others that share a commitment to cost-effective water quality solutions. WERF is dedicated to advancing science and technology addressing water quality issues as they impact water resources, the atmosphere, the lands, and quality of life. This report was prepared by the organization(s) named below as an account of work sponsored by the Water Environment Research Foundation (WERF). Neither WERF, members of WERF, the organization(s) named below, nor any person acting on their behalf: (a) makes any warranty, express or implied, with respect to the use of any information, apparatus, method, or process disclosed in this report or that such use may not infringe on privately owned rights; or (b) assumes any liabilities with respect to the use of, or for damages resulting from the use of, any information, apparatus, method, or process disclosed in this report.HDR Engineering, Inc.The research on which this report is based was developed, in part, by the United States Environmental Protection Agency (EPA) through Cooperative Agreement No. CR-83155901-2 with the Water Environment Research Foundation (WERF). However, the views expressed in this document are not necessarily those of the EPA and EPA does not endorse any products or commercial services mentioned in this publication. This report is a publication of WERF, not EPA. Funds awarded under the Cooperative Agreement cited above were not used for editorial services, reproduction, printing, or distribution. This document was reviewed by a panel of independent experts selected by WERF. Mention of trade names or commercial products or services does not constitute endorsement or recommendations for use. Similarly, omission of products or trade names indicates nothing concerning WERF's or EPA's positions regarding product effectiveness or applicability. Nutrient Management: Regulatory Approaches to Protect Water Quality Volume 1 -Review of Existing Practices iiiThe project team would like to acknowledge and thank the wastewater utilities involved in nutrient total maximum daily loads and NPDES permitting whose experiences were used as references in preparation of this report, including the Alexandria Sanitation Authority, Abstract:Utilities work with regulators to treat wastewater to levels that protect human health and ecosystems. Water quality criteria and permits are based on scientifically defensible and shared understanding of sources of pollutants in a watershed, as well as treatment capabilities and costs to control these in the aquatic environment. The national discussion of nutrient impacts on water quality continues to evolve -issues in high...

Abstract-The advent of host virtualization has increased the number of management attribute classes and instances. At the same time an additional degree of heterogeneity has been introduced, due to different hypervisor products coupled with multiple guest operating systems. These changes obviate provisionary methods of harmonising management information. We analyse the problem dimensions of attribute harmonisation according to a common management scenario and show why heterogeneity at hypervisor and VM level is difficult to deal with at present. In response, we present a classification of bottomup attribute matching patterns and propose a methodology for the systematic processing of management attributes. As a proof-of-concept, we describe our implementation of an attribute normalising framework extending the libvirt library.

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