Remediation Management Articles

  • Biosurfactant production by Mucor circinelloides on waste frying oil and possible uses in crude oil remediation

    Biosurfactants are biocompatible surface active agents which many microorganisms produce. This study investigated the production of biosurfactants by Mucor circinelloides. The effects of different factors on biosurfactant production, including carbon sources and concentrations, nitrogen sources, and iron (II) concentration, were studied and the optimum condition determined. Finally, the ...


    By IWA Publishing

  • Is a Horizontal Remediation Well System Right for My Project?

    So your remediation project is moving towards a choice of remedy, whether it involves Dual Phase Extraction, Total Phase Extraction, Biosparging, Soil Vapor Extraction (SVE), Air Sparge (AS), or Chemox Delivery, or any combination of the above. Now, the concept of horizontal remediation wells (HRW’s) for your site seems intriguing. So what do you need to consider before proposing a ...

  • Horizontal Remediation Wells - Case Study

    Why wait 30 years…when HRWs are here today! After 30 years of remediation, the responsible party became frustrated with the limitations of vertical wells and the inability of methods used to achieve cleanup goals.  Seeking site closure, the soon to be client, turned to Directional Technologies and Horizontal Remediation Wells (HRWs) to break the stalemate.  The HRWs were ...

  • Horizontal Recirculation Wells Remediate Fuel Oil Impacts

    Catering to the unique needs of the client and working hand-in-hand with the consultant, Directional Technologies approached a challenging remedial situation with flexibility and a new approach to re-task a horizontal injection well system to horizontal recirculation wells. Directional Technologies invites you to read another case study explaining how a project benefited from decades of ...

  • Horizontal Well Systems for Improving Remedial Efficiency and Zone of Influence

    To improve remediation efficiency and expand the zone of influence, Directional Technologies, Inc. transferred technology from the oil and gas industry to the environmental industry. The oil and gas industry has used directional drilling for decades to improve oil recovery, based on a simple concept that the more screen contact there is with the “pay-zone,” the more production gained. ...

  • Simultaneous optimization of clustering and fuzzy IF-THEN rules parameters by the genetic algorithm in fuzzy inference system-based wave predictor models

    Prediction of wave parameters is of great importance in the design of marine structures. In this paper, two shortcomings with the adaptive network-based fuzzy inference system (ANFIS) model for prediction of wave parameters are remedied by employing a genetic algorithm (GA). The first shortcoming in the ANFIS model goes back to its problem for automatic extraction of fuzzy IF-THEN rules and ...


    By IWA Publishing

  • AutoTracker Reduces Remediation Cost per Gallon by 59% - Case Study

    AutoTracker™ (U.S. Patent Number 6,520,259) Floating Extraction Inlets were added to a DPE system at a remediation site in mid-Michigan following several years of operational problems caused by fluctuating water table levels. Installation was straightforward and system performance improved immediately, reducing on-site maintenance, labor and O&M costs and greatly improving groundwater ...


    By QED Environmental Systems

  • World Oil: Method proves itself for field monitoring of asphaltene treatment programs

    Asphaltene deposition is a serious concern for operators, particularly in deepwater subsea systems, due to the immense capital costs of these developments; expense and challenges in performing remediation operations; and the potential for staggering amounts of lost or deferred production. Consequently, it is imperative that asphaltene concerns are evaluated thoroughly for new deepwater ...


    By Baker Hughes, a GE company

  • Carbon Tetrachloride Source Remediation in Bedrock and Overburden - Case Study

    ABSTRACT Carbon Tetrachloride source in bedrock and collateral contamination in overburden were successfully remediated at a decommissioned U.S. Air Force base. CHALLENGES The combination of bedrock and overburden Carbon Tetrachloride (CT) contamination posed a unique set of challenges including the selection of an adequate drilling program, gathering ...

  • Fractured Bedrock Remediation - Case Study

    ABSTRACT BOS 200® successfully remediates petroleum groundwater impacts in fractured bedrock at a former truck stop. Based on the post-injection groundwater results from the pilot test and full-scale injection, a No Further Action letter was issued in February 2015. CHALLENGES Over a period of 20 years, site investigation activities revealed a 320 foot ...

  • Combined Remedies Treat Large Industrial Site - Case Study

    ABSTRACT BOS 100 was successfully implemented as part of a combined remedies strategy to treat elevated levels of Trichloroethylene in a shallow fine grained aquifer at a former large industrial facility. CHALLENGES A large industrial facility used vapor degreasing in the 1970s and 1980s that resulted in chlorinated volatile organic compound (CVOC) ...

  • Key Elements of a Successful Horizontal Remediation System

    Environmental remediation professionals around the country (and internationally) are rapidly learning that Horizontal Remediation Systems are an essential “tool in their remediation toolbox”. When designed and executed by experienced horizontal environmental drilling experts, Horizontal Remediation Systems can be extremely effective at achieving rapid site closure compared to vertical ...

  • Multipurpose Horizontal Remediation Wells Treat Impacts from Former DOD Operations

    The site, a former DOD plant previously used for the manufacture of aircraft and missile systems had TCE impacts that posed a threat to the current occupants at the site.    The site had been recently redeveloped into an industrial complex for several companies. For the new occupants, a disruptive indoor construction to install a vertical remediation system was out of the question. In ...

  • Soil and Ground Water Remediation Case Study

    On this State Funded Clean-Up project, Global was the project engineer and was responsible for the design of an air sparging/soil vapor extraction remediation system. The system included five soil vapor extraction wells and twelve sparging wells that operated on a rotating schedule. One of the soil vapor extraction wells and nine of the sparging wells were installed as horizontal wells beneath ...

  • EPA’s Discretion on Whether to Require Inert Ingredients Disclosure Upheld

    On June 29, 2016, the U.S. District Court for the Northern District of California (Court) issued an opinion dismissing the complaint and denying the motion for summary judgment of the Center for Environmental Health, Beyond Pesticides, and Physicians for Social Responsibility (CEH, et al.), and granting the U.S. Environmental Protection Agency’s (EPA) motion for summary judgment. ...


    By Bergeson & Campbell, P.C.

  • Removal of boron from aqueous solution using cryptocrystalline magnesite

    The present study aimed to evaluate the efficiency of using cryptocrystalline magnesite to remove boron ions from aqueous systems. Batch experimental protocols were used to evaluate the adsorption capacity of magnesite for boron. Parameters optimized included: time, dosage, chemical species concentration and pH. Optimum conditions were observed to be 30 min of agitation, 1 g dosage of ...


    By IWA Publishing

  • Superfund Remediation: The Key to Land Reuse Case Study

    The technology is ready and, with state and federal tax credits waiting, the economics look better than ever: New Jersey, one of the first states to be industrialized, finds itself plagued with the contaminated aftermath of pre-EPA industries: soil contamination. From superfund sites to the gas station whose underground storage tank has been oozing for the last 20 years, every ...


    By CR Clean Air Group, LLC

  • Case study - Reactive barrier wall project update

    Reactive Barrier Wall solves space and on-going activity problems during remediation project “Name Removed”, was contracted to install a passive reactive barrier wall in “Name Removed”. The wall was designed to remediate groundwater containing tetrachloroethylene (TCE). What made this job unique was the site location. Installation would occur in an operating commercial ...

  • Owosso MI - Guaranteed PCE remediation under active restaurant - Case Study

    First Michigan state-funded cleanup using electrical resistivity heating technology and a guaranteed project. Background The site is a former dry cleaner that had operated for more than 20 years. The dry cleaning operations left residual perchloroethylene (PCE) contamination in the soil and groundwater and a building was constructed on the site without ...


    By TRS Group, Inc.

  • Seattle, WA - Active chemical distribution facility - Case Study

    Guaranteed Remediation of TCE and PCE under Active Facility Project Summary TRS Group, Inc. (TRS) working with FLOYD|SNIDER a local Seattle consulting firm, completed a guaranteed fixed price remediation (GFPR) of tetrachloroethene (PCE) and trichloroethene (TCE) in soil at an active bulk chemical warehouse and distribution facility in Seattle, Washington. ...


    By TRS Group, Inc.

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