Technology Merit: Remediation

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EA Engineering, Science, And Technology, Inc. (Hunt Valley, Md), for the development of the Green Site Remediation (GSR) Toolbox to help the company's professionals foster the use of green and sustainable elements in soil and groundwater remediation projects. The GSR Toolbox applies a tiered-tools approach to virtually any phase of a project's life cycle. The complexity of available tools varies sequentially from qualitative to quantitative in step with the project's progress. Application of the GSR Toolbox begins during site investigation when, following EPA's TRIAD approach, EA maximizes the use of real-time field measurements and minimizes laboratory-derived wastes and the carbon footprint associated with invasive drilling activities or multiple field mobilizations. During the feasibility study/design phase, the GSR Toolbox focuses on analyzing life-cycle scenarios and comparing remedial technologies based on sustainability metrics such as short- and long-term energy and water consumption, air emissions, ecosystem impacts, material consumption, and waste minimization or recycling. When implementing sustainable technologies, the GSR Toolbox promotes the use of environmentally preferred products and clean construction techniques, including the use of solar-powered systems, green-fleet equipment, cleaner fuels, and waste-to-energy solutions.

Groundwater & Environmental Services, Inc. (GES; Neptune, NJ), for development of the green remediation indicator (GRI) tool as part of the company's green and sustainable remediation practice. While "carbon footprint" commonly refers to the CO2 generated by a remedial solution, another important factor is CO2 generation per mass of contaminant reduction or recovery. The GRI calculates the comparative site-specific carbon footprints of remedial strategies using this perspective. When factoring in life-cycle duration, a long-term monitored natural attenuation remedy may in actuality have a significantly greater mass of CO2 produced per mass of remediated contaminant than a short-term aggressive technology (such as in-situ chemical oxidation injection). Accordingly, large carbon footprints should be accompanied by significant risk reduction. The GRI tool offers a forward-thinking process to implement the most effective solution within a practical "whole site" approach that also includes resource conservation through efficient use and re-use of energy-efficient, aggressive remediation or long-term low-impact technologies.