1. Silver Oaks Comparing the benefits and risks associated with the attempts to clean up Silver Oaks

2. Benefits to Clean-up  Make town, land safer for the citizens  Assure no more risk of contamination  Cleaner and Safer drinking water  Healthier environment and ecosystem

3. Risks with Clean up  Transportation- movement of toxic material from one place to another  Possible “dual” site contamination  increased traffic risk

4. Risks with Clean up  Removal of contaminated soil causes large areas of debris and dangerous construction sites  Soil debris may make air temporarily contaminated  Area homes businesses affected by clean up

5. 4 Main Ways of Clean up  Excavation- “Dig it all up and take away”  Incineration- “Dig it up and burn baby burn”  Containment- “Trap it and remove it”  Electrification- “Zap it to oblivion”

6. Excavation  Quickest Method  Removes all the Contamination  Contamination then transported to proper facility  GUARENTEES all pollution is gone  HIGHEST COST  Large destruction of homes/businesses  Soil would have to be replaced making cost extremely high

7. Incineration  Similar to Excavation  Burns Soil and Contaminated ground water  Eliminates travel concerns of moving pesticide  GUARENTEES Removal of Pesticide  Incinerator donated by chemical company  3 rd most costly plan  Filters in smokestack would eliminate most pollution  Burned soil would then be replaced into ground

8. Containment  Entrapment of groundwater  Works slowly  Would take up to 15 years to reduce contamination levels  Trapped water then shipped and dumped into ocean  2 nd most costly method  Cost high due to monitoring needs and shipping of water  Limited Digging, less disruption of peoples lives Barrier

9. Electrification  High energy electric field would be produced to remove chemical  Work 100 in lab setting  Lowest Cost  Unknown health effects of electric field on life forms  Would take 15 years to work  Eliminates most digging  Less homes and businesses affected

10. Comparing the Methods MethodSafetyCostEnvironment Speed and reliability Excavation Incineration Containment Electrification