Case Study: Beneficial Reuse of Soils â Treating Pesticide Impacted
4 Beneficial Reuse of Soils - Treating Pesticide Impacted Soil In-Situ (Case Study) Mike Gawel and Bruce Tunnicliffe, Vertex Environmental Inc Prior to a property transaction or redevelopment, typically excavation and off-site disposal is used to address contaminated soils. Dig and haul has long been a standard soil remediation approach. However, there are many scenarios when on-site treatment offers great benefits, it can be safer (no road truck traffic), less expensive, and sustainable. With on-going advances in science, the types of contaminants that can be quickly and effectively treated on-site has grown to include the more difficult to treat compounds, such as heavy oils, solvents, and pesticides. With on-going changes in soil regulation, on-site soil treatment may need to become much more common in the very near future. Vertex recently worked on the largest on-site in-situ pesticide soil remediation project in Canada. Over 210,000 m3 of contaminated soil was treated. The estimated cost for excavation and off-site disposal was estimated at over $25 million. On-site soil treatment was assessed and ultimately completed for less than 15% of the cost of the dig and haul option. The purpose of this talk is to showcase the pesticide-impacted soil remediation technology, methodology, the job site, and results of this large in-situ clean-up. The presentation will review how the remediation amendment was tailored to meet site specific needs and successfully applied to treat the recalcitrant pesticide DDE (1,1-Dichloro-2,2-bis(pchlorophenyl) ethylene) in shallow soils to meet stringent Government standards. The talk will explain all stages of the project, from the critical upfront preparation, to application of the soil mixing technology, to sampling, and site closure. Site plots, analytical, and site figures will be shown. The talk with conclude with recommendations and suggestions for other similar job sites.
Mike Gawel, EP, BSc, CTech Mr. Gawel is an associate at Vertex Environmental Inc., and has more than 10 years of experience designing and implementing remedial programs at sites across Canada and other exotic parts of the world. Mr. Gawel holds a Bachelor’s degree in Biology and Chemistry with post graduate studies in Environmental Engineering.
Bruce Tunnicliffe, MASc, PEng. Mr. Tunnicliffe is President of Vertex Environmental Inc., is an Environmental Engineer, and has years of experience designing and implementing remediation of chlorinated solvents and petroleum hydrocarbons. Mr. Tunnicliffe holds a Master’s degree from the University of Waterloo where he studied oxidation in fractured bedrock.
Mike Gawel, EP, BSc, CTech Mr. Gawel is an associate at Vertex Environmental Inc., and has more than 10 years of experience designing and implementing remedial programs at sites across Canada and other exotic parts of the world. Mr. Gawel holds a Bachelor’s degree in Biology and Chemistry with post graduate studies in Environmental Engineering.
Bruce Tunnicliffe, MASc, PEng. Mr. Tunnicliffe is President of Vertex Environmental Inc., is an Environmental Engineer, and has years of experience designing and implementing remediation of chlorinated solvents and petroleum hydrocarbons. Mr. Tunnicliffe holds a Master’s degree from the University of Waterloo where he studied oxidation in fractured bedrock.
