Contaminated Site Articles on Environmental XPRT

Curtailing Contamination Hydrocarbon Engineering July 2017

During planned shutdowns, the equipment in refineries and petrochemical plants has to be checked. The downtime can require several weeks when tanks, vessels, distillation columns, and pipes have to be drained and cleaned for i maintenance or repair. Shutdowns are labour-intensive and require accurate scheduling and organisation between all projects, as often hundreds of workers are ...

Aug. 16, 2017

By Kurita

Innovations in the Remediation of Contaminated Sites

Discussion of the EPA publication completed North American Innovative Technology Demonstration Projects; share the information from this new document which is now available in an online. Mention some of the ongoing and completed field demonstrations of innovative remediation technologies sponsored by EPA and other government agencies such as DOD, NPS, USFS, and BIA. The remediation ...

Sep. 11, 2012

Fast bioremediation of a hydrocarbon contaminated site

The use of bioremediation has been demonstrated to be a very effective treatment technology for a hydrocarbon contaminated site within a month of starting. In addition to selection and preparation of an appropriate microbial inoculum the other key considerations were effective mixing, addition of suitable nutrients and maintenance of soil moisture levels. Careful management of all these ...

Mar. 30, 2010

By Biofuture Ltd

Accelerating progress at contaminated sediment sites

The “top five actions” presented by Bridges et al. in “Accelerating Progress at Contaminated Sediment Sites: Moving from Guidance to Practice” (IEAM 8(2):331‐338) represent an important set of normative guidelines that could accelerate progress at contaminated sediment sites. An important next step is to use those guidelines to develop recommendations about good practices. This letter presents ...

Jun. 21, 2012

By John Wiley & Sons, Ltd.

Contaminated land site investigation in Bristol

Client: Property Developer Location: Bristol, UK Services: Contaminated Land Risk Assessment, Human Health Risk Assessment, Controlled Waters and Ecological Risk Assessment. Summary: ESI’s contaminated land assessment ensured that this former brickworks site was not registered as contaminated land under Part 2A of ...

Oct. 7, 2011

By ESI Ltd - Environment Specialists

One of Europe’s most contaminated sites

VSD Avenue, a joint venture partnership between VolkerStevin, DEC and Sita Remediation, started work at the beginning of September on the remediation of the former Avenue Coking Works in Chesterfield; one of the most heavily contaminated sites in Europe. Guy Pomphrey, chairman of VSD Avenue, explains The £82m contract, signed in July, was commissioned by the client and site owner the East ...

Oct. 28, 2009

By Newzeye Ltd

Cut-Off Wall - Abandoned Mine Tailings Pond - Case Study

Problem At an abandoned mine in the Yukon Territory, mining for both Gold and Zinc took place until the mid 1950's, with the processing of the ore taking place on the banks of an adjacent lake. Processing methods resulted in the creation of a large mine tailings pond that had high concentrations of iron, arsenic, zinc and lead. Spring runoff and summer rainfall then infiltrated through ...

Aug. 19, 2017

By C3 Environmental Limited

In-Situ Treatment - Funnel & Gate System - Case Study

Problem An asphalt testing facility, in operation for many years, closed in the early 1990s. A subsequent environmental assessment revealed that an underground storage tank, used to hold common cleaning/degreasing solvent for use during testing, had developed a leak and had to be abandoned. The storage tank and soil in the immediate vicinity was removed as the first step to remediate ...

Aug. 19, 2017

By C3 Environmental Limited

In-Situ Bioremediation Treats Contaminants at a Disposal Site

Site Summary A TCE-contaminated plume developed from buried drums containing organic solvents on the former Duluth Airbase. Soil excavation took place in the early 1990s and a total of 1,925 yds3 of soil were treated through land farming. A few years later, site assessment activities uncovered a VOC plume in groundwater and further monitoring revealed the breakdown of TCE to daughter products ...

Jan. 1, 2006

By REGENESIS

Quantitative risk assessment for contaminated sites in Spain

Environmental Quantitative Risk Assessment is one of the key factors in the Decision Making Process for contaminated sites. Numerous decisions have to be made before, during and after conducting a quantitative risk assessment.Risk assessment is based on the information gathered previously: Historical information (Phase I) Site characterization (Phase II) Toxicological ...

Oct. 10, 2008

By MediTerra Environmental Consultants, S.L.

Modeling Leachate Contamination and Remediation of Groundwater at a Landfill Site

Leachate contamination of an aquifer from a landfill sitewas simulated using the groundwater flow and transport model SUTRA developed by the U.S. Geological Survey. The model calibration was performed by spatially adjusting the hydraulic conductivity in order to capture the measured hydraulic head spatial variation and then by adjusting the dispersivity and porosity match the measured chloride ...

Mar. 21, 2005

By Springer

Who will do the Cleanup? (Contaminated Sites Report 2007)

To better understand Canada’s current capacity to meet this unique labour demand, ECO Canada undertook this study in early 2006. Our work was guided by a 29-member National Steering Committee from government, industry, and academia. In addition, a full-day National Forum on Contaminated Sites was held in Vancouver on March 28, 2006 to gain support and gather comments on the project from ...

Jan. 1, 1

By ECO Canada

Risk assessment and brownfields-determining exposure to site contaminants

The USEPA’s Brownfields Program was developed to facilitate the rehabilitation of contaminated property for re-development. EPA has set forth criteria that must be met for a revitalized property to be used for residential, commercial or industrial purposes. The main thrust of these criteria is the long-term protection of residents or visitors (including shoppers and business employees). As ...

Jul. 5, 2010

By Atlantic Environmental, Inc.

Site 25 System Slows Down Contamination

The Air Force has installed dollar $2 million groundwater extraction and granular activated carbon system to slow down the spread of the solvent trichloroethene (TCE) groundwater contamination at Site ...

Nov. 1, 2001

By J.C. Palomar, Inc.

NJDEP issuing remedial priority scores for contaminated sites

Very shortly, the New Jersey Department of Environmental Protection (NJDEP) will be issuing letters to responsible parties containing a draft Remedial Priority Score (RPS) for their particular site. It is unclear how the rankings will be used, but the RPS system has been described as a tool to sort sites out for further discussion. The ...

Nov. 15, 2011

By The Law Office of Christopher D. Hopkins, LLC

Contaminated Water

Treatment of Contaminated Mine Water Discharge Recent estimates have suggested that in the UK 2,500 km of streams and an area of 9,000 km2 of groundwater bodies are at risk of failure of Water Framework Directive Objectives due to mine water pollution (Jarvis & Rees 2004). For over two decades the Loughor Estuary in South Wales, which carries SSSI status, had been ...

Dec. 1, 2012

By BritishFlora

Geostatistics for radio-contaminated site characterization - Methods and case studies

Radiological characterization for decommissioning of nuclear sites and facilities is a key issue for the global success of such industrial projects, which imposes an efficient control of radiological hazards, cost estimation, planning and waste management. A large range of evaluation objectives co-exist during a decommissioning and dismantling (D&D) project: doubt removal, identification of ...

Aug. 27, 2012

By Geovariances

Failure of Magnesium Peroxide to Remediate Petroleum Hydrocarbon-Contaminated Sites (PDF)

Researchers promote magnesium peroxide as a viable method to aerobically bioremediate petroleum hydrocarbons and restore groundwater quality. Suppliers claim that dissolved oxygen released in the saturated zone promotes biological growth for degrading a wide range of hydrocarbons dissolved in water and sorbed onto soil particles. Yet, staff with the CaliforniaRegional Water Quality Control Board, ...

Jan. 1, 2001

By REGENESIS

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

Research on the process-based risk evaluation method of groundwater pollution for contaminated site

A universal method to evaluate groundwater pollution risk with the site scale has not been established. The groundwater pollution risk is commonly evaluated by overlaying the results of groundwater vulnerability and pollution sources, but this method is inapplicable for contaminated sites. Considering the current supervision demands of groundwater pollution in China, this paper suggests a risk ...

Aug. 13, 2015

By IWA Publishing

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