about
services
Technical
contact
projects
home

 

    

Hill AFB
Surfactant Enhanced Solubilization and
Mobilization of Mixed NAPL Waste, Operable Unit 1
Ogden, UT

 


Client:

USEPA, Ada, Oklahoma

Hill Air Force Base Site

    

Through OU, Surbec principals were responsible for conducting two independent in-situ surfactant field tests at Operable Unit One (OU 1), Hill AFB. The target contaminants included chlorinated solvents as well as aromatic hydrocarbons. The tests were conducted as part of 8 independent demonstrations to compare the relative effectiveness of innovative subsurface remediation technologies at OU 1. Of the technologies compared at the site, the surfactant flushing test appeared to have the most promise.

Surbec personnel provided conceptual and pilot scale design of the surfactant injection and recovery system which included site visits, predesign analysis, Modflow analysis, tracer test analysis, surfactant selection and optimization, surfactant recovery design, fate transport analysis, project management and project coordination.

Conducted treatability study to evaluate surfactant enhanced recovery of mixed wastes. Included 3-D flow and 2-D fate and transport modeling to identify hydraulics capture zones. Collected and analyzed samples from over 60 ground water sampling points. Supervised the collection, analysis and interpretation of all site data which included over 10,000 samples.

 

 TASKS

 
  • Supervised and conducted two independent in-situ surfactant flush studies to demonstrate surfactant recovery from the subsurface and enhanced NAPL removal.
  • Achieved over 97% contaminant removal at the mobilization site and 58% removal at the solubilization site in less than 10 days of actual flushing. Recovered 95+% of injected surfactant.
  • Specific tasks included tracer test analysis, surfactant selection and optimization, surfactant recovery design, and fate and transport analysis.