Silver OaksSilver OaksComparing the benefits and risks Comparing the benefits and risks associated with the attempts to associated with the attempts to

clean up Silver Oaks clean up Silver Oaks

Benefits to Clean-up Benefits to Clean-up

Make town, land safer Make town, land safer for the citizensfor the citizens

Assure no more risk Assure no more risk of contaminationof contamination

Cleaner and Safer Cleaner and Safer drinking waterdrinking water

Healthier environment Healthier environment and ecosystemand ecosystem

Risks with Clean upRisks with Clean up

Transportation- Transportation- movement of toxic movement of toxic material from one material from one place to anotherplace to another

Possible “dual” site Possible “dual” site contaminationcontamination

increased traffic riskincreased traffic risk

Risks with Clean upRisks with Clean up

Removal of Removal of contaminated soil contaminated soil causes large areas of causes large areas of debris and dangerous debris and dangerous construction sitesconstruction sites

Soil debris may make Soil debris may make air temporarily air temporarily contaminatedcontaminated

Area homes Area homes businesses affected businesses affected by clean upby clean up

4 Main Ways of Clean up4 Main Ways of Clean up

Excavation- “Dig it all up and take away”Excavation- “Dig it all up and take away” Incineration- “Dig it up and burn baby Incineration- “Dig it up and burn baby

burn”burn” Containment- “Trap it and remove it”Containment- “Trap it and remove it” Electrification- “Zap it to oblivion” Electrification- “Zap it to oblivion”

ExcavationExcavation Quickest MethodQuickest Method Removes all the Removes all the

ContaminationContamination Contamination then Contamination then

transported to proper facilitytransported to proper facility GUARENTEES all pollution is GUARENTEES all pollution is

gonegone HIGHEST COSTHIGHEST COST Large destruction of Large destruction of

homes/businesseshomes/businesses Soil would have to be replaced Soil would have to be replaced

making cost extremely highmaking cost extremely high

IncinerationIncineration Similar to ExcavationSimilar to Excavation Burns Soil and Contaminated Burns Soil and Contaminated

ground waterground water Eliminates travel concerns of Eliminates travel concerns of

moving pesticidemoving pesticide GUARENTEES Removal of GUARENTEES Removal of

PesticidePesticide Incinerator donated by Incinerator donated by

chemical companychemical company 33rdrd most costly plan most costly plan Filters in smokestack would Filters in smokestack would

eliminate most pollutioneliminate most pollution Burned soil would then be Burned soil would then be

replaced into groundreplaced into ground

ContainmentContainment Entrapment of groundwaterEntrapment of groundwater Works slowlyWorks slowly Would take up to 15 years to Would take up to 15 years to

reduce contamination levels reduce contamination levels Trapped water then shipped Trapped water then shipped

and dumped into oceanand dumped into ocean 22ndnd most costly method most costly method Cost high due to monitoring Cost high due to monitoring

needs and shipping of waterneeds and shipping of water Limited Digging, less Limited Digging, less

disruption of peoples lives disruption of peoples lives

Barrier

ElectrificationElectrification

High energy electric field High energy electric field would be produced to would be produced to remove chemicalremove chemical

Work 100 in lab settingWork 100 in lab setting Lowest CostLowest Cost Unknown health effects of Unknown health effects of

electric field on life formselectric field on life forms Would take 15 years to Would take 15 years to

workwork Eliminates most diggingEliminates most digging Less homes and Less homes and

businesses affectedbusinesses affected

Comparing the MethodsComparing the Methods

MethodMethod SafetySafety CostCost EnvironmentEnvironment Speed and Speed and reliabilityreliability

ExcavationExcavation

IncinerationIncineration

ContainmentContainment

ElectrificationElectrification