contaminated site remediation Articles

Innovative Environmental Technologies, Inc"s Fall 2009 Newsletter featuring chlorinated and petroleum contaminated site remediation.   Visit www.iet-inc.net for more newsletters, case studies, and technical bulletins concerning in-situ remedial technologies. ...

Jan. 9, 2009

By Innovative Environmental Technologies, Inc. (IET)

Causal relationships derived from field data are potentially confounded by variables that are correlated with both the cause and its effect. The present study presents a method for assessing the potential for confounding and applies it to the relationship between ionic strength and impairment of benthic invertebrate assemblages in central Appalachian streams. The method weighs all available ...

Nov. 11, 2012

By John Wiley & Sons, Ltd.

Current risk-based decision-making techniques for prioritising contaminated land for clean-up have been criticized within Hungary for their failure to consider remediation benefits. A cost-benefit or risk-benefit approach is required to ensure that scarce resources for remediation are used efficiently. Problems arise because the credibility of non-market valuation information in Hungary is low, ...

Jan. 25, 2004

By Inderscience Publishers

Customer: Rainbow Group and T95C Application: Portable water sampling Background: Established in 1985, Rainbow Group are environmental demolition and civil engineering contractors based in Padstow, NSW. Their services include construction, excavation, demolition, remediation and water treatment. Rainbow Group has a renowned ...

Jun. 11, 2015

By Ecotech - ACOEM Group

A mixed-integer non-linear programming (MINLP) with surrogate model was introduced to derive the optimal surfactant enhanced aquifer remediation (SEAR) process (remediation cost minimisation and removal rate maximisation) at a nitrobenzene-contaminated site. First, a 3D multi-phase flow simulation model was developed to simulate the SEAR process; using a radial basis function artificial neural ...

Aug. 4, 2014

By Inderscience Publishers

Interest in using sustainable practices and technologies for environmental cleanup has increased notably within the past few years. The US EPA and many states have published recommended practices to reduce the environmental footprint of cleanup operations, and many consultants and contractors are attempting to “go green” in contaminated site remediation. It makes sense to conserve ...

Sep. 22, 2011

By Directed Technologies Drilling Incorporated (DTD)

Risk assessment of contaminated sites is crucial for evaluating adverse health impacts on local communities, and provides effective decision support for site-remediation practices. In this study, a coupled simulation and fuzzy-rule-based method was proposed for health risk assessment of groundwater contamination, and applied to a petroleum contaminated site. Benzene concentrations under two ...

Jun. 28, 2011

By Inderscience Publishers

The presence of chromium in the environment is widespread due to its usage in many industrial processes. The metallurgic, tanning and plating industries are just a few examples of applications which use chromium on a daily basis (Nriagu and Nieboer, 1988). Chromium is stable in 2 oxidation states: cationic Cr with a valence of 3 and anionic with a valence of 6. Chromium (III) is often considered ...

Jun. 22, 2007

By University of Tehran

The addition of activated carbon (AC) to sediments is a relatively new approach to remediate contaminated sites. AC strongly sorbs hydrophobic organic contaminants, thereby reducing their bioavailability and uptake in organisms. Because of its high sorption capacity, AC might however also sorb other chemicals, which are not contaminants, but have ecological functions instead. Examples of such ...

Nov. 22, 2013

By John Wiley & Sons, Ltd.

Cleaning up contaminated sites is currently considered one of the most important environmental policy priorities in many countries. Remediation of contaminated sites is attractive because it reduces risks to human health and ecological systems, and brings a host of potential social and economic benefits. Public programmes are deemed necessary by the law and in practice to address contamination at ...

Jul. 19, 2009

By Inderscience Publishers

Ecosystem restoration planning near the beginning of the site assessment and management process (“early integration”) involves consideration of restoration goals from the outset in developing solutions for contaminated ecosystems. There are limitations to integration that stem from institutional barriers, few successful precedents and limited availability of guidance. Challenges occur in ...

Sep. 29, 2015

By John Wiley & Sons, Ltd.

Site Description: An active electronic manufacturing facility had an on-site TCE handling unit that was active for 10 years. During this time, approximately 1,365 gallons of solvent was released, which created an approximate 16 acre plume in saprolite and bedrock. Contaminants: Primarily TCE at concentrations greater than 200,000 ug/L in the source area with ...

Feb. 3, 2017

By Geo-Cleanse International, Inc.

Contaminated sites in the U.S. undergo remediation and restoration through regulatory programs that lead the two processes through independent but often parallel pathways with different objectives. The objective of remediation is to reduce risk to human health and the environment, whereas that of restoration is to restore injured resources and compensate the public for lost use of the services ...

Oct. 6, 2015

By John Wiley & Sons, Ltd.

Remediation of sites contaminated with radioactive material such as Cs is important because of the risk posed to human health. Here, we report the effectiveness of water containing air bubbles with a diameter around 100 nm (nanobubbled water, NB water) for the removal of radioactive Cs. Laboratory experiments confirmed that NB water is more effective than purified water and as effective as water ...

Feb. 17, 2013

By IWA Publishing

There are many emerging remedial technologies which require the introduction of various materials to the saturated zone of a contaminated site in an effort to remediate groundwater in-situ. These remedial materials include both chemical compounds as well as proprietary products such as hydrogen release and oxygen release compounds.A common requirement to implement an effective application of many ...

Dec. 31, 2000

By Regenesis

Efficient treatment strategies to reduce the toxicity of metal contaminated soil using cost effective techniques such as naturally available ameliorants and industrial waste have emerged. Three easily available amendments were determined: Bone meal, red earth/mud and pulverised fly ash (PFA). The application of ameliorants offered a possible alternative in situ remediation of contaminated sites ...

Jun. 24, 2006

By Center for Environment and Energy Research & Studies (CEERS)

As you all are aware, NJDEP revised the Technical Requirements for Site Remediation (TRSR) a few years ago to include “Notification and Public Outreach” procedures (NJAC 7:26E-1.4).  The rule requires the person responsible for conducting the remediation of a contaminated site to perform various public notifications and outreach activities, the majority of which had to be ...

Jun. 21, 2011

By Environmental Waste Management Associates LLC (EWMA)

Data logging The data logging function on Geotech's GA range of gas analysers is popular with research teams as users can take regular readings and data can be stored for several days. The data is captured regularly without researchers needing to be present, such as over a weekend or holiday. The Geotech product A project using the GA2000’s ...

Nov. 23, 2015

By QED Environmental Systems Ltd.

While Brazil has not changed its waste generator liability since adopting Law 6.938 in 1981, it has updated and altered requirements for generators. Most recently, the Brazilian National Council on the Environment (CONAMA) adopted CONAMA Resolution 420/2009, establishing guidelines and criteria for the management of contaminated sites. CONAMA Resolution provides for the creation of soil quality ...

Apr. 5, 2010

By Enhesa - Global EHS & Product Compliance Assurance

Atrazine is one of the most commonly used herbicides and is produced and used in large quantity worldwide. In the present study, the sorption and desorption of atrazine in five typical Chinese soils were examined. The sorption of atrazine followed the conventional linear isotherm reasonably well, indicating that sorption was driven largely by hydrophobic partitioning into soil organic matter. ...

Jan. 12, 2009

By Soil Science Society of America (SSSA)