Subsurface Characterization

KEY BENEFITS

RCC
applies state of the art, cost-effective approaches to the characterization of the geology, hydrogeology, physical and chemical properties of the subsurface. Whenever feasible, RCC utilizes field sampling/analytical equipment that can provide real time site characterization/remedial investigation data. 


This strategy affords:

  • same day receipt of accurate and representative data;
  • flexibility in changing the work scope while in the field to reflect the data findings; and,
  • more cost effective site characterization and remedial investigation solutions.

CAPABILITIES
RCC’s subsurface evaluation capabilities incorporate a wide range of services that are geared toward defining the extent of residual compounds of interest, assessing the mobility of the compounds found, identifying the hydrogeological conditions that exist, determining risks to potential sensitive receptors, and, if warranted, determining the effects of a remedial technology on the subsurface conditions. RCC incorporates the following approaches to complete such tasks:

  • Development of Site Characterization, Remedial Investigation and Remedial Action Workplans by qualified and experienced Hydrogeologists, Engineers and Scientists;
  • Implementation of field sampling programs employing such cost-effective site characterization techniques as collection of groundwater samples from temporary monitoring wells, utilization of field gas chromatography systems to obtain same day analytical results and digital photography for instant electronic transmission of field conditions to interested parties; 
    and,
    in the event an unacceptable risk exists:
  • RCC evaluates the feasibility of an appropriate remedial technology. This task may include performance of pilot tests for technologies such as Total Phase Extraction, Air or Ozone Sparging, Soil Washing, Soil Vapor Extraction, Nutrient Enhancement to facilitate Bioremediation, Biosparging/Bioventing and groundwater extraction/treatment.

REFERENCE ACCOUNTS

Major Retail Distribution Center

RCC was asked to provide expedited site characterization, remedial investigation and site remediation services of a Distribution Center facility for a Fortune 100 Retailer that was under an agreement of sale. The site was tainted with solvents and petroleum hydrocarbons. RCC used a streamlined approach for comprehensive site characterization.

The following subsurface assessment tools were used:

  • Magnatometry and ground penetrating radar
  • GoreSorber® Soil Gas Survey
  • Direct Push soil coring
  • Temporary groundwater test point installation
  • Mobil Laboratory
  • Pilot testing for SVE, air sparging, TPE, Bioremediation
  • Aquifer testing

 Independent Gasoline Service Station

RCC performed subsurface characterization and remediation services associated with a gasoline plume that spread through a sewer system to several residential wells and basements within an area of approximately 1,000 feet. Given the emergency nature of this project, RCC mobilized several drill rigs and qualified Geologists to promptly characterize subsurface conditions. Residences received immediate relief from gasoline exposure as RCC installed ventilation systems in basements and sewers and arranged for bottled water to be delivered to impacted homes. RCC’s mobile remedial pilot test equipment was employed to determine an appropriate remedial technology for the site. While seeking expedited regulatory approval for the remedial process, RCC installed a Total Phase Extraction system that was started immediately upon official State approval of the project.

Various Risk Assessment Services at Major Retail Gasoline Stations

RCC has incorporated site characterization data and research into potential sensitive receptors at numerous gasoline service stations into an evaluation of the potential risks associated with residual hydrocarbons and solvents. Fate and transport modeling has been performed to establish exposure risks and appropriate site specific remedial standards. RCC has been successful in obtaining regulatory approval to allow residual hydrocarbons to naturally degrade and/or to drastically reduce the scope of remedial work.
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November 6, 2007