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Book Long term Impact of Dredged Material at Two Open water Sites

Download or read book Long term Impact of Dredged Material at Two Open water Sites written by Henry E. Tatem and published by . This book was released on 1984 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lake Erie study area included two control and three disposal sites, sampled once in 1979. Disposal sites contained more gravel and sand compared to control areas. Numerous macrofaunal and meiofaunal animals were found at all of the sites. In general, control sites contained more macrofaunal animals and species while the disposal sites were richer in meiofaunal. Substrate type and variety, which was influence by the disposal events, determined which animals were found where. None of the sites were devoid of animals and there was no indication that sediment contaminants affected benthic communities at the disposal sites. There were no difference in mercury or cadmium concentrations in sediment samples from the various sites. Samples taken at the Elliot Bay disposal site revealed that the disposal mound, created in 1975-1976, was still present and had stabilized physically and chemically. The mound area contained more animals that the surrounding bottom areas. Bivalves and polychaetes were the dominant animals than the surrounding disposal site. The numbers of these animals at the site increased from 1976 to 1979-1980. Sediment at the center of the disposal site contained polychlorinated biphenyls (PCB); however, other areas of Elliot Bay, removed from the dredges material mound, also contained PCB at concentrations similar to those observed at the site. Some animals taken from the disposal mound contained PCB at levels slilghtly higher than sediment levels which were in the 2.0- to 3.0-ppm range.

Book Toxicology Research Projects Directory

Download or read book Toxicology Research Projects Directory written by and published by . This book was released on 1979 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Progress Evaluation Meeting Pollution of Lake Erie and Its Tributaries Indiana Michigan New York Ohio Pennsylvania June 4 1968 Cleveland Ohio

Download or read book Progress Evaluation Meeting Pollution of Lake Erie and Its Tributaries Indiana Michigan New York Ohio Pennsylvania June 4 1968 Cleveland Ohio written by and published by . This book was released on 1969 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Demonstration Training and Fellowship Awards

Download or read book Research Demonstration Training and Fellowship Awards written by United States. Environmental Protection Agency. Grants Administration Division and published by . This book was released on with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Demonstration Training and Fellowship Awards Apr September FY 1979

Download or read book Research Demonstration Training and Fellowship Awards Apr September FY 1979 written by United States. Environmental Protection Agency. Grants Administration Division and published by . This book was released on 1980 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Annual Report of the Lake Erie Program

Download or read book Annual Report of the Lake Erie Program written by Ohio State University. Lake Erie Program and published by . This book was released on 1978 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Sediment Heavy Metal Variability and Mixing in Lake Erie

Download or read book Sediment Heavy Metal Variability and Mixing in Lake Erie written by Russell H. Plumb and published by . This book was released on 1980 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book LONG TERM IMPACT OF DREDGED MATERIAL DISPOSAL IN LAKE ERIE OFF ASHTABULA OHIO

Download or read book LONG TERM IMPACT OF DREDGED MATERIAL DISPOSAL IN LAKE ERIE OFF ASHTABULA OHIO written by Kenneth J. Salamon and published by . This book was released on 1984 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Material dredged from Ashtabula Harbor and River in 1975 and 1976 was placed at three Lake Erie disposal sites. The disposal operations were studied during the Dredged Material Research Program, 1973-1978. This report discusses animal, sediment, and water samples obtained from the three disposal sites and two nearby reference areas in 1979. Sediment characteristics, benthic animals, and mercury and cadmium levels were studied. Disposal sites contained more gravel and sand than the reference sites which were predominantly silt (58 per cent) and clay (33 percent). Disposal areas contained approximately 26 percent sand compared to 9 percent for the reference areas. A number of large (macrofauna) and small (meiofauna) benthic animals were found at both disposal and reference areas. In general, more macrofaunal animals and a greater variety of species were found at the reference areas. Sediment analyses showed the reference or control areas contained higher levels of mercury (0.9 microgram) compared to the disposal areas (0.7 microgram). For cadmium, the opposite was true. There were higher cadmium levels at the disposal areas. The differences were not statistically significant. Data obtained in 1979 are discussed in relation to the earlier studies conducted in 1975 and 1976.

Book Report on Pollution of Lake Erie and Its Tributaries

Download or read book Report on Pollution of Lake Erie and Its Tributaries written by United States. Division of Water Supply and Pollution Control and published by . This book was released on 1965 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Erie Harbor Diked Disposal Area Site No 2

Download or read book Erie Harbor Diked Disposal Area Site No 2 written by and published by . This book was released on 1975 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Coal Research Projects

Download or read book Coal Research Projects written by and published by . This book was released on 1983 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: