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Service Expertise:
Environmental Services

Water Resource 

RCRA/CERCLA Cleanup
Aquifer Storage and Retrieval (ASR)  
Effluent Disposal Systems
Reclaimed Water Injection for Seawater Barrier
Mining Industry
Landfill

Chemical and Petroleum Industry

Data Reports

 
Petro-chemical Industries – Environmental Remediation and Management

Petro-chemical companies need an integrated efficient and effective environmental management system.

Compliance with the environmental protection (water Quality) policy needs costly monitoring, data processing, modeling, and evaluation of remedial alternatives, remediation, and long term monitoring.

For over three decades EWM have been developing innovative procedures and tools to support federal agencies (U.S. EPA, Department of Energy, and Department of Defense) and private industries. EWM processed sites are large. Entire Long Island Groundwater reservoir, DOE Hanford site (one of the largest contaminated federal facility covering 586 sq. mile area and 300 contaminated sites), EPA San Gabriel Basin (170 sq. mile contaminated groundwater basin – a primary source of water for 1 million people in Los Angeles County), El Toro Marine Base, and Disney world RIB sites are some of the key sites simulated by EMW tools and procedures.

EWM Superfund site support to EPA includes oversight reviews of documents provided by the site contractors.  Site contractors provide voluminous hard copy “box full of reports”. EWM tools and services are used to upload electronic data containing millions of chemical records and generate informative summary tables, graphical displays, and alternate modeling of sites.

EWM services and technologies provide support for an effective integrated environment management, environmental data processing, and detailed analyses which ensures overall integrity for compliance of the regulatory requirements. EWM deliverables are based on state-of-the-art scientific and engineering methods. EWM solutions maintain and control the configuration of all critical data component. EWM tools (Object-oriented data repository, SHOWME, and EDA) provide integrated features for supporting the processes of data collection, validation, and presentation of the pertinent information to the regulators and stakeholders

Listed below are EPA’s general expectations in developing appropriate remedial alternatives (40 CFR 300.430(a)(1)(iii)(A-F) along with a brief note on EWM’s  specialties to address EPA requirements

EPA expects to use treatment to address the principal threats posed by a site, wherever practicable.
EWM automated data processing and modeling provides “real time” understanding of environmental status and quantitative assessments of health risks

EPA expects to use engineering controls, such as containment, for waste that poses a relatively low long-term threat or where treatment is impracticable.
EWM modeling technologies provide relatively accurate estimates of contamination mass and design of appropriate control measures

EPA expects to use a combination of methods, as appropriate, to achieve protection of human health and the environment.
EWM interactive development and modifications of regional and local scale study areas provide easy means to explore alternative remedial alternatives and compare benefits and limitation of each alternative

EPA expects to use, such as water use and deed restrictions, to supplement engineering controls as appropriate for short- and long-term management to prevent or limit exposure to hazardous substances, pollutants or contaminants.
EWM reports and conclusions are based on detailed consideration of institutional controls and detailed evaluation of short- and long-term exposure hazardous substances, pollutants or contaminants.

EPA expects to consider using innovative technology when such technology offers the potential for comparable or superior treatment performance or implementability, fewer or lesser adverse impacts than other available approaches, or lower costs for similar levels of performance than demonstrated technologies.

EWM is developer of complex innovative technologies for nationwide applications. Integrated evaluations of new technologies are interfaced with the site specific information for effective and efficient assessment and selection of appropriate methods for a given site. These include in-situ barriers and bioremediation.

EPA expects to return usable ground waters to their beneficial uses wherever practicable, within a timeframe that is reasonable given the particular circumstances of the site

EWM groundwater management experiences include several decades of detailed designs of several national and international sites.

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EWM 10 commandments are designed to efficiently address EPA 9 criteria for evaluating remedial alternatives to ensure that all important considerations are factored into remedy selection decisions. EWM illustrated examples are included below to provide a general feel on EWM unique capabilities and procedures to support clients’ needs.

Site characterization data includes following:

  • Geology
  • Hydrogeology (types and number of aquifer systems, depth to groundwater, hydraulic pressure, flow direction, and velocities
  • Types of soil (e.g. clayey soils allow less leaching than sandy soils)
  • Amount of water percolation (which depends on rainfall, standing water on a site, and nature of soil)
  • Background conditions and location of potential off-site pollution sources
  • Horizontal and vertical distribution of chemical substances and by-products of decomposition
  • Physical properties of chemical substances (e.g. density, viscosity, asolubility)
  • Potential for changes in chemical fate and transport throughout remediation process
  • Size and static pressure of the contamination source (e.g. underground storage system).


Following representative illustrations support our credentials and experiences for each of the following.

Complex Geological Setting

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Soil Properties and near surface site characterization

Surface soil, surface runoff, and near surface characterization data constitutes another significant amount of data collected at a cost of several thousands of dollars. EWM SHOWME tools displays of all data for each chemical have assisted in quick screening of hot spots for further investigations or remediation planning.






EWM procedures detailed estimates of moisture variations with depth provide estimates of water and contaminant migrations

For accurate estimation of path lines, CFEST particle travel lines are estimated using refined grid and time dependent head variations.
Color coded paths effectively display movement of particles through geologic layers.
CFEST path lines assisted the EPA for ROD negotiations with the responsible parties


EWM animations provide detailed understanding of fate and transport at various time and at each depths


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