... macroinvertebrate biodiversity in Chesapeake Bay over several time periods between 1987–2001. These models were subsequently compared to monitoring data for sediment contaminant concentrations and physical/chemical water quality conditions. A series of GIS exercises demonstrated that low values for species...

... the corrosion. Under anoxic conditions cerussite and lead sulfide precipitated. When P CO2 increased, the concentration of the free ion of lead increased. lead cable corrosion speciation water quality quality of sediments Eh-pH diagrams Antonina Degtiareva,l Maria Elektorowicz, I and Taghi Ebadi...

.... Nonylphenol (NP) is the basic building block of NPEs and can be a minor biodegradate. Responding to proposed water quality limits in the United States and Canada, the Alkylphenols & Ethoxylates Research Council initiated the NPE Environmental Management Program (EMP). The program, discussed in this paper...

... that is diluted by tidal mixing with the bay's marine waters. The regulatory issue that should be assessed is the water quality and ecological significance of the pulses of aquatic life toxicity that exist in the waters at the bottom of the freshwater lens where the Creek waters mix with the marine waters...

... A longitudinal study was conducted to assess the impact of pollution by a Sugar-Mill Company, and the effects of domestic wastes on the water quality of the Mingoala River in Mbandjock, Cameroon. Over a period of twelve months, bimonthly field samples were collected and analyzed for a number...

... Two field trials were constructed to investigate the effect on water quality of tire chip fills placed above the groundwater table. Control wells were used to distinguish the substances naturally present in groundwater from those that leached from tire chips. There was no evidence that tire...

... are also being determined. water quality water sampling trace elements K a t h l e e n K. F i t z g e r a l d I, Timothy L. Miller I, Arthur J. Horowitz 2, Charles R. Demas 3, and D.A. Rickert I U.S. GEOLOGICAL SURVEY PROTOCOL FOR MEASURING LOW LEVELS OF INORGANIC CONSTITUENTS, INCLUDING TRACE...

... This study aims to develop a methodology to simulate the joint behaviour, in space and time, of some water quality indicators of a river, resulting from a mine effluent discharge, in order to enable the prediction of extreme scenarios for the entire system. Considering one pollutant...

..., and water quality data collected during the dredging activity. This paper discusses key parameters required to improve the current predictive techniques and outlines the type of monitoring program needed to improve the comparability of the techniques to measured releases. The recommended monitoring program...

... to determine the effect on selected salmon species and life stages. Use of simulated water resulted in 96-h LC50 total copper values which ranged from 61–103 ug/L. The long-term (i.e., 60-day) no-effect level for total copper ranged from 18–24 ug/L. Water quality variation is believed to play a major role...

... bioavailable phosphorus conservation tillage conventional tillage erosion eutrophication nonpoint source pollution phosphorus loss watershed management water quality Andrew N. Sharpley I and S. J. Smith 1 Application of Phosphorus Bioavailability Indices to Agricultural Runoff and Soils REFERENCE...

... on the application of engine coolant technology to heavy duty diesel engines in the future. heavy duty engine coolants liner pitting cavitation corrosion coolant recycling water pump seals supplemental coolant additives coolant maintenance coolant test methods water quality F. A. Kelley I Heavy Duty...

... comprehensive use of the CPT/Hydropunch™ screening methodology in variably saturated media, to a depth of 60 feet. estuarine sediments water quality lithology San Francisco Bay Cone Penetrometer Hydropunch Paul D. Kuhlmeier and Thomas E. Sturdivant DELINEATION OF LITHOLOGY AND GROUNDWATER QUALITY...

... The decade of the 1980s saw the identification of many adverse chemistry conditions that, when recognized, resulted in dramatic improvement in water quality in the primary and secondary systems of nuclear power plants. Many of the chemistry program upgrades resulted from the need to improve...

... data data base water quality surface water sediment G. Douglas Glysson and John V. Skinner RELATION BETWEEN THE NATIONAL HANDBOOK OF RECOMMENDED METHODS FOR WATER DATA ACQUISITION AND ASTM STANDARDS REFERENCE: Glysson, G. Douglas and Skinner, John V. , "Relation Between The National Handbook...

... to determine them. Without standardized procedures, data from different sources are not comparable, and the utility and applicability of the various models would be questionable. water quality sediments trace elements modelling operational definitions standardized procedures Arthur J. Horowitz...

... detection can be used as an effective monitoring procedure for insuring the bacteriological quality of water supplies. PCR gene probe coliforms water quality indicator bacteria Ronald M. Atlas, Aslm K. Be], Shawn McCarty, Joseph DiCesare, and Lawrence Haff MONITORING MICROBIAL PATHOGENS...

... in the development and maintenance of safe water supplies is the use of appropriate monitoring technology for assessing microbiological water quality. Presently used microbiological water quality tests have several disadvantages for routine monitoring programs in developing countries and rural isolated communities...

... control and hence to meet drinking water quality standards. corrosion water distribution system pipe loop system water quality internal corrosion water treatment corrosion inhibitors Prakash M. Temkar, 1Richard J. Scholze, Jr., ~Stephen W. Maloney, and Chester H. Neff 2 Evaluating Corrosion...

... Reliable monitoring of ground-water quality in any terrane is difficult. There are many ways in which violation of sound principles of monitoring-network design and good sampling protocol makes it easy to acquire data that are not representative of the water or pollutants within an aquifer...