Contaminant Monitoring Articles on Environmental XPRT

Monitoring Metal Contamination in Water

Metal contamination in drinking and source water has proven to have economic and health impacts on the human race. Regulatory agencies understand the importance of remediating metal contamination in our water supply to ensure safe consumption of drinking water. In order to properly remediate our water supplies, one must first determine cause of contamination and the source of the problem. ...

May 26, 2014

By IWA Publishing

Reverse Osmosis and Nanofiltration Membrane Filtration Systems: Common Problems and How to Fix Them

Reverse osmosis (RO) and nanofiltration (NF) are membrane filtration technologies that are designed to remove solute ions and molecules from a pretreated liquid stream. Well-designed RO/NF units are compact and demand relatively little maintenance, making them an attractive alternative to conventional treatment trains. Even despite the merits of today’s efficient RO/NF technologies, it pays ...

May 4, 2017

By SAMCO Technologies, Inc.

Using terrestrial mammalian carnivores for global contaminant monitoring

Mar. 24, 2014

By John Wiley & Sons, Ltd.

Guidelines for the use of mosses and soils in monitoring contaminant fallout

In 1999 Italy’s Environmental Protection Agency (ANPA) published a paper on the methods to be used in the case of mosses and soils. After nearly a decade, a review is advisable. The attached Guidelines take account of numerous experiments in the environmental field and include a short description of bryophyte biology. A great many pollutants are present in our environment. In addition to ...

Jun. 25, 2008

By European Commission, Directorate General for Research & Innovation

Optimal groundwater contamination monitoring using pumping wells

This study presents a new method for selecting monitoring wells for optimal evaluation of groundwater quality. The basic approach of this work is motivated by difficulties in interpolating groundwater quality from information collected for only few sampled wells. The well selection relies on other existing data relevant to contaminant distribution in the sampling domain, e.g. predictions of ...

Aug. 1, 2010

By IWA Publishing

Contamination at ANA Shipyard

ANA Shipyard is located on Elizabeth river and during additional construction work, it was discovered that the ground water was contaminated with free product due to soil contaminated with a mixture of oils and greases. Excavation of soil and replacement with clean dirt was not an option since it would contaminate the river. It was recommended by the Virginia DEQ that the cleanup should be done ...

Aug. 12, 2013

By Sarva Bio Remed, LLC

Case study – condensate contamination

Site: Natural Gas Wellhead Site (Colorado) Contaminant: BTEX (LNAPL/free product present) Soil Type: Well-sorted sand and gravel Injection Cost: $13,000 (material & labor): Size of Trenches: Approximately 5 feet by 55 feet No. of Trenches: 5 (4 at size above, 1 added in the field - ~5 feet by 21 feet Depth of Trench: ~7 feet below ground surface Goal: ...

Dec. 7, 2010

By Remediation Products Incorporated (RPI)

Contaminated soil remediation - Inverurie

Remove Contaminated Soil from Residential Gardens & Re-Landscape Client: MTM Construction Consultant: WA Fairhurst and Partners Challenge: Advise on the removal of contaminated material from a residential area built on a former town gas site. Reinstate existing landscaping. Applied ...

Oct. 23, 2012

By Soilutions Ltd

Contamination/Environmental case study

Orlando Drum Company, Orlando, FL Facility washes and reconditions used drums Mercuri and Associates, Inc. was retained as hydrogeological consultant to verify state allegations of contamination of soil and ground water with heavy metals, pesticides, and volatile organic compounds. Initiated preliminary soil and groundwater sampling program, prepared/submitted ...

Jul. 17, 2015

By Mercuri & Associates, Inc.

Groundwater and contaminant transport modelling

Client: Nuclear Industry Location: Cumbria, UK Services: Radioactive waste consultancy, hydrogeological risk assessment Issues: Potential risk to groundwater, environment and human health. System conceptualisation Summary: ESI developed a FEFLOW finite element model of the groundwater system in the ...

Oct. 8, 2011

By ESI Ltd - Environment Specialists

The Mussel Watch approach and its applicability to global chemical contamination monitoring programmes

Although the use of biological monitors has become a standard practice in different national and international programmes over the past two decades, there are several complicating factors that need to be taken into account when sampling over large geographical extensions. Species availability, physiological conditions, and climatic variables encountered over large areas of study are a few of the ...

Jan. 26, 2004

By Inderscience Publishers

UCMR2 - Unregulated contaminant monitoring regulation 2 application notes

The EPA UCMR2 program was developed to monitor US drinking water sources for currently unregulated compounds. UCMR2 sampling will occur during 2008-2010. Horizon Technology has developed turnkey solutions for some of these methods, that address UCMR2 requirements. The applications for EPA ...

Nov. 10, 2013

By Horizon Technology, Inc.

Combining modeling and monitoring to study fecal contamination in a small rural catchment

The present study sought to identify Escherichia coli sources in a small catchment and to use the agro-hydrological model soil and water assessment tool (SWAT) to estimate their impact on river water quality. The innovative aspects of this research are to assess the hourly variations of fecal contamination and to take these variations into account in the model to provide a better evaluation of ...

Sep. 1, 2011

By IWA Publishing

Monitoring Airborne Contaminants in Workplace Atmospheres, Using Sampling Devices and GC or HPLC

Workers' exposure to hazardous substances must be held within acceptable limits. Therefore, airborne contaminant vapor and particles (including aerosols) in industrial atmospheres must be monitored. In the United States, the National Institute for Occupational Safety and Health (NIOSH) and the Occupational Safety and Health Administration (OSHA) offer, for many such substances, specific ...

Dec. 31, 1997

By MilliporeSigma

Monitored natural recovery of PCB-contaminated sediments at the Lake Hartwell Superfund site

A series of three articles describing a study evaluating the natural recovery of surface sediments contaminated with polychlorinated biphenyls (PCBs) at the Sangamo-Weston/Twelvemile Creek/Lake Hartwell Superfund Site in Pickens County, South ...

Jul. 1, 2005

By ENVIRON

Integrated risk and recovery monitoring of ecosystem restorations on contaminated sites

Ecological restorations of contaminated sites balance the human and ecological risks of residual contamination with the benefits of ecological recovery and the return of lost ecological function and ecosystem services. Risk and recovery are interrelated dynamic conditions, changing as remediation and restoration activities progress through implementation into long‐term management and ecosystem ...

Oct. 14, 2015

By John Wiley & Sons, Ltd.

Remove contaminated soil - Duns

Remove Contaminated Soil & Treat Ground Waters Client: Lothian Borders & Angus Co-op Consultant: Wren & Bell Challenge: Remove contaminated soils and tanks from a former petrol station. Applied technology: Excavate, haulage and disposal Remediation ...

Oct. 23, 2012

By Soilutions Ltd

Bioremediating Explosives Contaminated Soil

From the beginning of World War II until the 1970s, the site that is now the Naval Surface Warfare Center in Crane, Indiana (NSWC-Crane) was the home of a major bomb manufacturing operation. Explosive compounds such as TNT, Royal Demolition Explosives (RDX) and Her Majesty’s Explosive (HMX) were handled loose and drifted through air vents. Often, the material settled on the roofs of buildings, ...

Jan. 1, 1999

By BioCycle Magazine

Multiple options of HFC Contamination monitors from Lab Impex Systems in UK

A family of SEA Hand Foot Clothing Contamination Monitors are exclusively available in the UK from Lab Impex Systems. The monitor incorporates large area plastic scintillation detectors with a zinc-sulphide layer which facilitates simultaneous measurement of Alpha and Beta and Gamma contamination. Options include: Extra Narrow Version Wall mounted Hand Monitor ...

Jul. 25, 2011

By Ultra Electronics Nuclear Control Systems

Bioremediation with compost of a diesel contaminated soil: Monitoring by dehydrogenase activity and basal respiration

The effect of compost on hydrocarbon degradation was determined during a 120-d incubation period. An evaluation of soil basal respiration and dehydrogenase activity as a monitoring instrument for the bioremediation process of soil contaminated with commercial diesel-oil was carried out. Six soil samples were used: S (control, uncontaminated soil), CS (contaminated soil), CSS (contaminated and ...

Jun. 27, 2009

By BioCycle Magazine

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