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This case study reviews an Underground Storage Tank (UST) case with the State of Arizona Department of Environmental Quality (ADEQ) that had been active for over 30 years. Antea Group®, a leading global environmental consulting firm, developed a remediation plan for in situ soil mixing using RegenOx® and ORC Advanced® in the most highly contaminated zone and in situ chemical oxidation (ISCO) injections using PersulfOx® elsewhere in the plume. The solution using REGENESIS technologies achieved site closure with ADEQ.

Case study highlights:

  • Treatment approach demonstrated that the plume was decreasing and not a threat to impact drinking water, prompting the ADEQ to grant closure
  • This combined remedy method was 50-70% faster than a thermal treatment approach
  • The highly successful approach is estimated to have saved the project over $500,000 compared to remedial alternatives

About the Environmental Consultant:


REGENESIS Remediation Solutions Antea Group
Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, infrastructure, urban planning and water. By combining strategic thinking, multidisciplinary perspectives and technical expertise, Antea Group does more than effectively solve client challenges - they deliver sustainable results for a better future. With more than 3,100 employees in over 80 offices around the world, Antea Group serves clients ranging from global energy companies and manufacturers to national governments and local municipalities.