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This digital document is an article from The Register-Guard (Eugene, OR), published by The Register Guard on July 1, 2004. The length of the article is 2343 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Coos County works to finish gas pipeline.(Environment)(Change in contractors leaves water quality issues to be ironed out)
Publication: The Register-Guard (Eugene, OR) (Newspaper)
Date: July 1, 2004
Publisher: The Register Guard
Page: D2

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Arsenic is categorized as the most familiar elementexisting in natural world. It is mainly divided allthrough the earth?s coatings and usually located inthe environment, sands, clay soils, rocks, and micro- organisms and in fresh waters. The compounds ofarsenic that actually exists in grains are verydangerous and harmful and sure passes through thehuman body very quickly. Arsenic in the form ofinorganic is most contaminated in nature. It isdumped into the body and attains more concentrationwith the passage of time and cause long-life damagesand defects. The present study aimed in comparingthe environmental impacts as especially on soil andgroundwater and health hazards involved as a resultof presence of Arsenic. The authors has presentedhis work chapter wise in this technical book.Theauthors appreciate the efforts of Barthlemy Chatonand his team in providing guidance for bookfinalization and highly acknowledge publishing of itby VDM Publishing House Ltd. for scientificknowledge sharing in the subject of wastewaterirrigation globally that certainly would be valuedin future. ... Read more

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This digital document is a journal article from Science of the Total Environment, The, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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To achieve the objectives of the European Water Framework Directive (EWFD), the Seine basin Water Authority has constructed a number of prospective scenarios forecasting the impact of planned investments in water quality. Paris and its suburbs were given special attention because of their impact on the river Seine. Paris sewer system and overflow control is of major concern in future management plans. The composition and fate of the urban effluents have been characterized through numerous in situ samplings, laboratory experiments and modelling studies. The PROSE model was especially designed to simulate the impact on the river of both permanent dry-weather effluents and of highly transient Combined Sewer Overflow (CSO). It was also used to represent the impact of Paris at large spatial and temporal scales. In addition to immediate effects on oxygen levels, heavy particulate organic matter loads that settle downstream of the outlets contribute to permanent oxygen consumption. Until the late 90s, the 50 km long reach of the Seine inside Paris was permanently affected by high oxygen consumption accounting for 112% of the flux upstream of the city. 20% of this demand resulted from CSO. However, the oxygenation of the system is strong due to high phytoplankton activity. As expected, the model results predict a reduction of both permanent dry-weather effluents and CSOs in the future that will greatly improve the oxygen levels (concentrations higher than 7.3 mgO"2 L^-^1, 90% of the time instead of 4.0 mgO"2 L^-^1 in the late 90s). The main conclusion is that, given the spatial and temporal extent of the impact of many CSOs, water quality models should take into account the CSOs in order to be reliable. ... Read more

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This first-of-its kind handbook is designed for environmental scientists and engineers dealing with water quality issues in water, wastewater or industrial treatment operations. Thoroughly addresses sorption processes, bioavailability, sediment collection and assessment techniques, toxicity testing, advantages and disadvantages of chemical sediment quality guidelines, and sediment quality modeling. This timely resource provides you with the knowledge and proposed solutions to identify, assess and manage contaminated sediment. Both highly scientific and practically written, the Handbook on Sediment Quality provides detailed discussion of sediment geochemistry, toxicology, and water quality interactions. 372 pages. Soft cover. ... Read more

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This digital document is a journal article from Science of the Total Environment, The, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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The influence of extensive sedum-moss vegetated roofs on runoff water quality was studied for four full scale installations located in southern Sweden. The aim of the study was to ascertain whether the vegetated roof behaves as a sink or a source of pollutants and whether the age of a vegetated roof influences runoff quality. The runoff quality from vegetated roofs was also compared with the runoff quality from non-vegetated roofs located in study areas. The following metals and nutrients were investigated: Cd, Cr, Cu, Fe, K, Mn, Pb, Zn, NO"3-N, NH"4-N, Tot-N, PO"4-P, and Tot-P. The results show that, with the exception of nitrogen, vegetated roofs behave as source of contaminants. While in lower concentrations than normally found in urban runoff, some metals appear in concentrations that would correspond to moderately polluted natural water. Nitrate nitrogen is retained by the vegetation or soil or both. Apart from the oldest, the studied vegetated roofs contribute phosphate phosphorus to the runoff. The maintenance of the vegetation systems on the roofs has to be carefully designed in order to avoid storm-water contamination; for instance, the use of easily dissolvable fertilizers should be avoided. ... Read more

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This volume is produced from digital images created through the University of Michigan University Library's large-scale digitization efforts. The Library seeks to preserve the intellectual content of items in a manner that facilitates and promotes a variety of uses. The digital reformatting process results in an electronic version of the original text that can be both accessed online and used to create new print copies. The Library also understands and values the usefulness of print and makes reprints available to the public whenever possible. This book and hundreds of thousands of others can be found in the HathiTrust, an archive of the digitized collections of many great research libraries. For access to the University of Michigan Library's digital collections, please see http://www.lib.umich.edu and for information about the HathiTrust, please visit http://www.hathitrust.org ... Read more