By National Research Council, Division on Earth and Life Studies, Water Science and Technology Board, Committee on the Evaluation of Chesapeake Bay Program Implementation for Nutrient Reduction to Improve Water Quality

ISBN-10: 0309210798

ISBN-13: 9780309210799

The Chesapeake Bay is North America's greatest and so much biologically diversified estuary, in addition to an immense advertisement and leisure source. even if, over the top quantities of nitrogen, phosphorus, and sediment from human actions and land improvement have disrupted the environment, inflicting damaging algae blooms, degraded habitats, and reduced populations of many species of fish and shellfish. In 1983, the Chesapeake Bay software (CBP) was once verified, in keeping with a cooperative partnership one of the U.S. Environmental safety employer (EPA), the country of Maryland, and the commonwealths of Pennsylvania and Virginia, and the District of Columbia, to deal with the level, complexity, and resources of toxins coming into the Bay. In 2008, the CBP introduced a chain of projects to extend the transparency of this system and heighten its responsibility and in 2009 an govt order injected new power into the recovery. additionally, as a part of the impact to enhance the speed of growth and raise responsibility within the Bay recovery, a two-year milestone method used to be brought aimed toward lowering total pollutants within the Bay via concentrating on incremental, temporary commitments from all the Bay jurisdictions. The nationwide learn Council (NRC) verified the Committee at the evaluate of Chesapeake Bay application Implementation for Nutrient aid in increase Water caliber in 2009 according to a request from the EPA. The committee was once charged to evaluate the framework utilized by the states and the CBP for monitoring nutrient and sediment regulate practices which are applied within the Chesapeake Bay watershed and to guage the two-year milestone process. The committee was once additionally to evaluate present adaptive administration ideas and to suggest advancements that can aid CBP to fulfill its nutrient and sediment relief ambitions. The committee didn't try and establish each attainable process that may be applied yet in its place fascinated by techniques that aren't being carried out to their complete capability or that can have immense, unrealized strength within the Bay watershed. simply because lots of those techniques have coverage or societal implications which may now not be totally evaluated by way of the committee, the recommendations are usually not prioritized yet are provided to motivate extra attention and exploration one of the CBP companions and stakeholders.

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5 m3/sec; solid line), 250 cfs (7 m3/sec; dashed line), and 490 cfs (14 m3/ sec; dotted line). SOURCE: Hirsch et al. (2010). Copyright © National Academy of Sciences. All rights reserved. ” The overall health of the Bay averaged 45 percent based on goals for water quality, habitats and lower food web, and fish and shellfish abundance, which represents a 6 percentage point improvement from 2008. Only 12 percent of the Bay and its tidal tributaries met applicable water quality criteria for dissolved oxygen between 2007-2009, a decrease of 5 percentage points from 2006-2008.

Under Section 303(d) of the CWA, states and tribes are required to identify and maintain lists of water bodies that do not meet adopted water quality standards (defined as nonattainment) and to assign priorities for the development of TMDLs. The TMDLs would identify the maximum amount of each pollutant from point and nonpoint Copyright © National Academy of Sciences. All rights reserved. Achieving Nutrient and Sediment Reduction Goals in the Chesapeake Bay: An Evaluation of Program Strategies and Im INTRODUCTION 37 sources that the water bodies could receive and still comply with water quality standards, including a margin of safety.

6 billion grams of oyster biomass All IBI scores for phytoplankton health to be at least 3 185,000 acres (74,900 hectares [ha]) of underwater grasses in the Bay by 2010, which represents the documented acreage found from the 1930s to present 22% positive hauls in 2009 27% of goal achieved in 2009 148% of goal achieved in 2008 112% of goal achieved in 2009 10% of goal achieved in 2008 54% of the Bay’s waters met the phytoplankton goal in 2009 85,899 acres (34,800 ha) in 2009, 46% of the Bay-wide goal Achieving Nutrient and Sediment Reduction Goals in the Chesapeake Bay: An Evaluation of Program Strategies and Im 35 Achieving Nutrient and Sediment Reduction Goals in the Chesapeake Bay: An Evaluation of Program Strategies and Im 36 NUTRIENT AND SEDIMENT REDUCTION GOALS IN THE CHESAPEAKE BAY Adoption of Agreements among Participating Jurisdictions and Government Agencies to Meet Load Reduction Goals (1983-2008) In 1983, the governors of Maryland, Virginia, and Pennsylvania; the mayor of the District of Columbia; the EPA; and the chair of the Chesapeake Bay Commission, later named the Chesapeake Executive Council, signed the Chesapeake Bay Agreement, a pledge aimed at restoring the Bay and its ecosystem (EPA, 1983a).

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Achieving Nutrient and Sediment Reduction Goals in the Chesapeake Bay: An Evaluation of Program Strategies and Implementation by National Research Council, Division on Earth and Life Studies, Water Science and Technology Board, Committee on the Evaluation of Chesapeake Bay Program Implementation for Nutrient Reduction to Improve Water Quality


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