EPA has examined a broad range of decontamination methods and technologies from common low technology to specialized higher technology approaches.  These approaches include investigating the best way to use water such as liquid and steam or other liquids, foams, fumigants, or specialized coatings to decontaminate surfaces.

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Redaction is the retroactive editing of a document to remove confidential material. Attorneys may often need to redact legal documents to protect attorney-client privilege and confidentiality. The Federal Rules of Civil Procedure Rule 5.2(a) protects this confidentiality and requires attorneys to redact client’s sensitive personal information and may only include the last four digits of a Social Security or tax ID number, the year of an individual’s birth, a minor’s initials or the last four digits of a financial account number. While redaction often conjures up images of black boxes over text, a Law Business Media article explain that proper redaction requires more than just a black box over a text, and often requires proper software or add-ons to properly redact.

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EPA develops procedures and methods to contain and mitigate contamination and to remediate the environment following public health and environmental incidents and disasters. Contamination incidents could require the decontamination of multiple buildings and outdoor areas. EPA's goal is to protect human health and the environment, and to restore contaminated areas as efficiently as possible.

EPA has a long history of and extensive expertise in cleaning up contamination associated with accidental spills and industrial accidents. However, remediation after incidents involving chemical, radiological, and biological agents released into buildings and wide areas, such as outdoor urban centers, is a relatively new responsibility for the Agency. The Agency lacked substantial experience or a research history to support. The U.S. Department of Defense has expertise in the tactical decontamination of equipment in battlefield situations, but this expertise is not directly applicable to the decontamination of public facilities and outdoor areas that have a variety of porous surfaces and, potentially, must meet more stringent clean-up goals for public re-occupation. A wide area contamination incident could require the decontamination of multiple buildings and city blocks. Activities associated with site cleanup or decontamination aims to fill the most critical scientific gaps in the capabilities of EPA’s response community. This helps EPA make the most informed clean-up decisions. EPA is building a broader base of knowledge on the effectiveness of technologies for homeland security application by studying their efficacy and compatibility under diverse, realistic environmental conditions, and under diverse operating conditions.

Building this decontamination knowledge base begins with experimentation at the laboratory bench scale before moving to testing decontamination approaches at a larger scale. To ensure that decontamination methods tested in the laboratory will perform at a large scale, EPA built a room-sized chamber to test methods at a pilot scale. Decontamination methods that prove successful at the pilot scale are brought forward for testing at large scale or real-world scale. Large-scale demonstrations involve engagement with other federal, state, and local agencies, and they examine operational and logistical challenges along with scientific challenges.