Excavation of Contaminated Soil - The application of excavation of contaminated soil by Atma Environmental Consultants at a site in Donvale, Victoria, Australia is well justified because the soil at the site was contaminated with Arsenic which is a toxic chemical; to allow for residential development. Phytoremediation: The use of willow and poplar trees to clean up subsurface hydrocarbon contamination at oilfield sites in Manitoba and Seskatchwan by federated cooperatives is well justified as the site has been successfully remediated through Phytoremediation. Furthermore, instead of digging up and transferring the contaminated soil to another site, this process was effective because it was done on site, saving time and energy. Bioremediation - According to Prof. Shaily Mohindra of UCLA, conventional technologies for cleaning groundwater are not always effective. Furthermore, these methods usually move pollutants from one location to another. For this reason, Mohindra supports bioremediation using Pseudonocardia dioxanivorans bacteria for the mitigation of next-generation pollutants, such as perfluorinated compounds, nanomaterials and dioxane. The progress of the cleanup will be monitored using stable isotopes. Pump and Treat - The application of Pump and Treat technology at Hanford has been successful in soil and groundwater remediation. By 2011, 24.7 billion liters of groundwater were treated, although the entire cleanup process will be completed in the next 25 years. At the end of the remediation process, contaminants such as plutonium and its derivatives, such as carbon tetrachloride, will be successfully removed from the soil and groundwater. In situ pumping and heat treatment technology has been used for more than 17 years to clean... half of the paper... processed by aquatic organisms, such as fish in the water, entering the food web, for example bald eagles feed on fish and are bioaccumulated by organisms such as bald eagles at higher trophic levels (EPA B-1). After the ban, the use of DDT in the United States was effectively stopped (EPA A-1). Long-lived pesticides such as DDT have been used to control target organisms for long periods of time and reduce the need for reapplication, but they can also affect non-target flora and fauna, such as bald eagles, for long periods of time (EPA B-1). Cited US Environmental Protection Agency. 2012. A guide for citizens. www.epa.gov/superfund/sitesThe American Land: Episode 210. https://www.youtube.com/watch?v=fp4CQhC_uPsUnited States Environmental Protection Agency. 2001. Water. http://water.epa.gov/scitech/swguidance/standards/criteria/current/upload/2001_10_12_criteria_ambientwqc_ddt80.pdf