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Environmental Indicators and Impact Assessment

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Full-Text Articles in Physical Sciences and Mathematics

Study Of Channel Sediments, James River & Hampton Roads Area, R. J. Huggett Jan 1971

Study Of Channel Sediments, James River & Hampton Roads Area, R. J. Huggett

Reports

Bottom sediment samples were collected from 3 locations transecting the channel in the lower James and Elizabeth rivers.

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Report To The York River Oyster Research Corporation On The Physiological Response Of Oysters To Several Polymeric Materials And Their Derivatives, Dexter S. Haven Mar 1967

Report To The York River Oyster Research Corporation On The Physiological Response Of Oysters To Several Polymeric Materials And Their Derivatives, Dexter S. Haven

Reports

The physiological responses of several polymeric materials and their derivatives, associated with the manufacturing process of pulp, were tested on oysters. It was thought that, when fed in small quantities, these substances might increase shell or meat size or be of value as possible nutritive supplements . The substances tested were divided into two classes. The first, consisting of basic polymeric materials, may occur in natural water s as the result of chemical changes. Representatives of these were indulin C and dextrose. The second class is composed of chemically pure derivatives of the preceding substances. These may appear in trace …

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Concentration Of Suspended Radioactive Wastes Into Bottom Deposits., Dexter S. Haven Jan 1967

Concentration Of Suspended Radioactive Wastes Into Bottom Deposits., Dexter S. Haven

Reports

During recent years rapid advances in nuclear technology have increased the probability of accidental contamination of our coastal estuarine waters by several routes. The chances of such contamination appear remote, but in the event of a nuclear accident, it would be imperative to understand processes which will disperse or concentrate radioactive materials. In coastal waters the disposal or transport of radionuclides in concentrations exceeding the maximum permissible concentration is affected by tidal action and by the volume of inflowing fresh waters. During the period of transport by coastal or estuarine currents, physical and chemical forces will produce abiotic sedimentation. The …

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Heavy Metals Tolerance Limits : Terminal Progress Report, M. L. Brehmer Jan 1967

Heavy Metals Tolerance Limits : Terminal Progress Report, M. L. Brehmer

Reports

The toxicity of .metal ions Lo fresh-water organisms has received considerable attention but little is known regarding their effects on estuarine and marine forms. These studies were initiated to aid in the evaluation of marine pollution problems.

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Final Report On Results Of Operation James River; An Evaluation Of The Physical And Biological Effects Of The Proposed James River Navigation Project, William J. Hargis Jr. Jan 1966

Final Report On Results Of Operation James River; An Evaluation Of The Physical And Biological Effects Of The Proposed James River Navigation Project, William J. Hargis Jr.

Reports

A comprehensive study of the physical and biological characteristics of the James Estuary has been carried out by oceanographers of the Virginia Institute of Marine Science under contract with the Virginia Commission of Fisheries. This research project, under way for three years, has been directed especially to the effects of the proposed James River Navigation Project channel dredging on physical features--i·~.,the structure and dynamics, of the estuary, and indirectly on oyster production. Five separate phases were carried out under the project (called Operation James River). These involved: 1) accumulation and study of relevant literature and data, 2) research into the …

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Lower James River Pollution Study, City Point To Chickahominy, August 6 - September 6, 1951 : A Preliminary Report Of Findings, Conclusions And Recommendations, William H. Massman, Ernest C. Ladd Jan 1961

Lower James River Pollution Study, City Point To Chickahominy, August 6 - September 6, 1951 : A Preliminary Report Of Findings, Conclusions And Recommendations, William H. Massman, Ernest C. Ladd

Reports

Hopewell,m Virginia.is ·a highly industrialized city, the Celanese Corporation of .America, the Continental Can Company, the Hercules Powder Company and the Solvay Process: Division of· Allied Chemical and Dye Corporation having plants there. All of these plants have industrial and human wastes, the combined amount of which is great from. the standpoint of both volume and strength. In addition, there. are human wastes from the City cf Hopewell and its suburbs in Prince George County and from Camp Lee. All of those wastes, sewage and industrial are discharged into the James River, Bailey Creek and into other tributaries of the …

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Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel Jan 1948

Review Of The Effects Of Ddt In The Blue Crab, Callinectes Sapidus, Willard A. Van Engel

Reports

Notes on the usage and effects of DDT.

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The Effect Of Ddt Spraying In The Langley-Messick Area, 1947, Willard A. Van Engel Jan 1947

The Effect Of Ddt Spraying In The Langley-Messick Area, 1947, Willard A. Van Engel

Reports

Observations and notes on the effects of DDT spraying.

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