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Articles 1 - 13 of 13
Full-Text Articles in Water Resource Management
The Klein Water Treatment Facility: Model For The New Superfund Management Strategy – Or- The Importance Of Being In The Wrong Place At The Right Time???, David Brown
David C. Brown
12 pages.
Attitudes And Perspectives Of Front-Line Workers In Environmental Policy: A Case Study Of Ohio Epa And Wisconsin Dnr, Sara Rinfret, Michelle Pautz
Attitudes And Perspectives Of Front-Line Workers In Environmental Policy: A Case Study Of Ohio Epa And Wisconsin Dnr, Sara Rinfret, Michelle Pautz
Michelle Pautz
This research is an effort to focus on frontline regulators with the Ohio Environmental Protection Agency and Wisconsin Department of Natural Resources. An online survey was conducted of frontline regulators in these agencies to explore their knowledge, attitudes, and perspectives on policy implementation. More specifically, we endeavor to answer how frontline workers implement environmental policy. To analyze these data, we use two categorizations of factors (knowledge and attitudes, and contextual factors) offered by May and Winter (2009) to examine what influences the decision making of frontline regulators in their regulatory interactions. We find that despite common presumptions of adversarialism in …
Water-Smart Growth: Integrating Water Management And Land Use Planning, Enjie Li
Water-Smart Growth: Integrating Water Management And Land Use Planning, Enjie Li
Enjie Li
Water and urban growth are inextricably interconnected, particularly in arid regions. Urban growth and water management have generated multi-dimensional conflicts. Growing cities that seek to quench their continuously increasing thirst with limited available water resources often have adverse impacts on the environment or region from which the water is drawn. Given that land use planning is an effective tool to control and manage urban growth and it has direct influence on urban water management, a holistic land-water planning approach is needed to cope with rapid growth and water scarcity in the arid western United States. However, this land-water planning approach …
Evaluation Of Chlorine Emission Potential At The New Deer Island Wastewater Treatment Plant, Somnath Basu, Kenneth Shilinsky, Irvine Wei
Evaluation Of Chlorine Emission Potential At The New Deer Island Wastewater Treatment Plant, Somnath Basu, Kenneth Shilinsky, Irvine Wei
Irvine W. Wei
The Massachusetts Water Resources Authority (MWRA) is currently constructing a 1,200 million gallon per day secondary wastewater treatment facility on Deer Island, in Boston Harbor. Chlorine, in the form of sodium hypochlorite solution, is purchased and barged to Deer Island for use in both effluent disinfection and odor scrubbing. The Process Engineering Department of Deer Island, as part of its on-going cost effectiveness program, is currently evaluating on-site generation of sodium hypochlorite. The technical analysis includes a thorough examination of the chemistry of production and storage, including potential losses to atmosphere. This paper presents an overview of that examination, defines …
Wicked Tools: The Value Of Scientific Models For Solving Maine’S Wicked Problems, Tim Waring
Wicked Tools: The Value Of Scientific Models For Solving Maine’S Wicked Problems, Tim Waring
Timothy M Waring
“Wicked problems” are urgent, high-stake socioeconomic-environmental challenges that often involve ideological conflict and have no “best solutions.” Using examples from Maine’s Sustainability Solutions Initiative projects, Tim Waring describes how scientific models can be used to address these kinds of problems. When well-constructed and tested models are used to address policy-relevant issues, include input from stakeholders, and integrate social, economic and environmental dynamics, they can become “wicked tools” to address some of society’s biggest challenges.
Concentration Of Selected Priority Organic Contaminants In Fish Maintained On Formulated Diets In Lake Ontario Waters, Joseph Buttner, Joseph Makarewicz, Theodore Lewis
Concentration Of Selected Priority Organic Contaminants In Fish Maintained On Formulated Diets In Lake Ontario Waters, Joseph Buttner, Joseph Makarewicz, Theodore Lewis
Joseph C Makarewicz
Fish were grown in Lake Ontario water under conditions simulating commercial aquaculture and then analyzed for 10 priority organic contaminants. Black bullheads (Ameiurus meias) were grown in cages placed in a bay of Lake Ontario. Rainbow trout (Oncorhynchus mykiss) were grown in terrestrial raceways served with Lake Ontario water. Yearlings were reared on a commercial ration in these systems, which partially isolated them from the contaminant-laden food web and bottom sediments, to an average weight of 93 g for black bullheads (range, 31-220 g) and 213 g (29-558 g) for rainbow trout. Concentrations of contaminants in skinless fillets of both …
Phytoplankton And Zooplankton: In Lakes Erie, Lake Huron And Lake Michigan: 1984, Joseph Makarewicz
Phytoplankton And Zooplankton: In Lakes Erie, Lake Huron And Lake Michigan: 1984, Joseph Makarewicz
Joseph C Makarewicz
With the acknowledgement that biological monitoring was fundamental to charting ecosystem health (Great Lakes Water Quality Agreement 1978), EPA's program was developed for Lakes Erie, Huron and Michigan to: 1) monitor seasonal patterns, ranges of abundance and, in general, structure of the phytoplankton and zooplankton communities; 2) relate the biological components to variations in the physical, nutrient and biological environment; and 3) assess the annual variance to allow better long-term assessments of trophic structure and state. Several offshore stations (9-11) on several cruises (9-11) during the spring, summer and autumn of 1984 and winter of 1985 were sampled. By examining …
Emerging Chemicals And Analytical Methods (2006), Matthew Morley, Daniel Snow, Chad Cecrle, Patrick Denning, Lindsey Miller
Emerging Chemicals And Analytical Methods (2006), Matthew Morley, Daniel Snow, Chad Cecrle, Patrick Denning, Lindsey Miller
Daniel D Snow
This review summarizes peer-reviewed literature related to analysis, occurrence, and fate of emerging chemical contaminants in the water environment. The review focuses on the following broad categories of emerging contaminants: pharmaceuticals and personal care products (PPCPs); endocrine disrupting compounds (EDCs), including hormones, surfactants, and plasticizers; and brominated flame retardants (BFRs). Although many of the cited articles refer to multiple types of contaminants (particularly hormones and pharmaceuticals), each article is summarized in only one section. Articles pertaining to specific treatment methods, risk assessments, or biological effects are not included in this review, and articles covering disinfection byproducts (DBPs), fluorinated compounds, and …
Remediating Rdx-Contaminated Ground Water With Permanganate: Laboratory Investigations For The Pantex Perched Aquifer, M. Adam, Steven Comfort, Matthew Morley, Daniel Snow
Remediating Rdx-Contaminated Ground Water With Permanganate: Laboratory Investigations For The Pantex Perched Aquifer, M. Adam, Steven Comfort, Matthew Morley, Daniel Snow
Daniel D Snow
Ground water beneath the U.S. Department of Energy Pantex Plant is contaminated with the high explosive RDX (hexahydro-1,3,5- trinitro-1,3,5 triazine). The USDOE Innovative Treatment and Remediation Demonstration (ITRD) program identified in situ oxidation by permanganate as a technology fit for further investigation. We evaluated the efficacy of KMnO4 to transform and mineralize RDX by determining degradation kinetics and carbon mass balances using 14C-RDX. Aqueous RDX solutions (2–5 mg L–1) and RDX-contaminated slurries (50% solids, w/v) were treated with KMnO4 at 1000, 2000, 4000, and 20,000 mg L–1. Treating an aqueous RDX solution of 2.8 mg L–1 with 20,000 mg KMnO4 …
Occurrence Of Sulfonamide Antimicrobials In Private Water Wells In Washington County, Idaho, Usa, Angela Batt, Daniel Snow, Diana Aga
Occurrence Of Sulfonamide Antimicrobials In Private Water Wells In Washington County, Idaho, Usa, Angela Batt, Daniel Snow, Diana Aga
Daniel D Snow
County (Weiser, Idaho) were collected to assess the impact of a nearby confined animal feeding operation (CAFO) on the quality of the local groundwater. All six samples were found contaminated by two veterinary antimicrobials, sulfamethazine (at concentrations from 0.076 to 0.22 μg/l) and sulfadimethoxine (at concentrations from 0.046 to 0.068 μg/l). These groundwater samples also contained elevated concentrations of nitrate and ammonium. Three of the sampled wells have nitrate levels that exceeded the maximum contaminant level set by the US Environmental Protection Agency for drinking water, with nitrate concentration as high as 39.1 mg/l. All but one well showed nitrate, …
Herbicides In Ground Water Beneath Nebraska’S Management Systems Evaluation Area, Roy F. Spalding, Mary Exner, Daniel Snow, David Cassada, Mark Burbach, Stephen Monson
Herbicides In Ground Water Beneath Nebraska’S Management Systems Evaluation Area, Roy F. Spalding, Mary Exner, Daniel Snow, David Cassada, Mark Burbach, Stephen Monson
Daniel D Snow
Profiles of ground water pesticide concentrations beneath the Nebraska Management Systems Evaluation Area (MSEA) describe the effect of 20 years of pesticide usage on ground water in the central Platte Valley of Nebraska. During the 6-yr (1991–1996) study, 14 pesticides and their transformation products were detected in 7848 ground water samples from the unconfined water table aquifer. Triazine and acetamide herbicides applied on the site and their transformation products had the highest frequencies of detection. Atrazine [6-chloro-N-ethyl-N’-(1-methylethyl)-1,3,5-triazine-2,4,-diamine] concentrations decreased with depth and ground water age determined with 3H/3He dating techniques. Assuming equivalent atrazine …
Transformation Of Hexahydro-1,3,5-Trinitro-1,3,5-Triazine (Rdx) By Permanganate, Chanat Chokejaroenrat, Steven Comfort, Clifford Harris, Daniel Snow, David Cassada, Chainarong Sakulthaew, Tunlawit Satapanajaru
Transformation Of Hexahydro-1,3,5-Trinitro-1,3,5-Triazine (Rdx) By Permanganate, Chanat Chokejaroenrat, Steven Comfort, Clifford Harris, Daniel Snow, David Cassada, Chainarong Sakulthaew, Tunlawit Satapanajaru
Daniel D Snow
The chemical oxidant permanganate (MnO4−) has been shown to effectively transform hexa-hydro-1,3,5-trinitro-1,3,5-triazine (RDX) at both the laboratory and fieldscales. We treated RDX with MnO4− with the objective of quantifying the effects of pH and temperature on destruction kinetics and determining reaction rates. A nitrogen mass balance and the distribution of reaction products were used to provide insight into reaction mechanisms. Kinetic experiments (at pH ~7, 25 °C) verifiedthat RDX−MnO4− reaction was first-order with respect to MnO4− and initial RDX concentration (second-order rate: 4.2 × 10−5 M−1 s−1). Batch experiments showed that choice of quenching agents (MnSO4, MnCO3, and H2O2) influenced …
Field-Scale Cleanup Of Atrazine And Cyanazine Contaminated Soil With A Combined Chemical-Biological Approach, Manmeet Waria, Steven Comfort, Sathaporn Onanong, T. Satapanajaru, Hardiljeet Boparai, C. Harris, Daniel Snow, David Cassada
Field-Scale Cleanup Of Atrazine And Cyanazine Contaminated Soil With A Combined Chemical-Biological Approach, Manmeet Waria, Steven Comfort, Sathaporn Onanong, T. Satapanajaru, Hardiljeet Boparai, C. Harris, Daniel Snow, David Cassada
Daniel D Snow
A former agrichemical dealership in western Nebraska was suspected of having contaminated soil. Our objective was to characterize and remediate the contaminated site by a combined chemical-biological approach. This was accomplished by creating contour maps of the on-site contamination, placing the top 60 cm of contaminated soil in windrows and mixing with a mechanical high-speed mixer. Homogenized soil containing both atrazine [6-chloro-N-ethyl-N´-isopropyl-1,3,5-triazine- 2,4-diamine] and cyanazine {2-[[4-chloro-6-(ethylamino)-1,3,5- triazin-2-yl] amino]-2-methylpropanenitrile} was then used in laboratory investigations to determine optimum treatments for pesticide destruction. Iron suspension experiments verified that zerovalent iron (Fe0) plus ferrous sulfate (FeSO4•7H2O) removed more than 90% of both atrazine …