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DHS Appendix A - Final Rule
On 11/20/07, the DHS published the final Appendix A to its Chemical Facility Anti-Terrorism Standards. If a facility possesses a chemical listed in the appendix at or above the quantity noted, it must submit a Top-Screen assessment by 1/22/08.
After that, DHS will determine which facilities present a high level of risk; those will have to conduct assessments and implement a security plan that meets DHS standards.  http://www.dhs.gov/xprevprot/laws/gc_1166796969417.shtm
11/20/20075/23/2012 10:55 AM
  
Excerpt from an Actio Newsletter
This communication provides the framework for the DHS documents posted above.
On November 2, 2007 the Department of Homeland Security released Appendix A of the Chemical Facility Anti-Terrorism Standards (CFATS)...
11/6/20075/23/2012 10:55 AM
  
DHS Chemicals of Interest on Appendix A
There are approximately 300 chemicals of interest on Appendix A and include very common industrial chemicals such as chlorine, hydrogen peroxide, acetone and ammonia.
If you have a chemical of interest in a reportable quantity, you will need to submit a Top-Screen with 60 calendar days.
11/2/20075/23/2012 10:55 AM
  
DHS Top Screen Submission Process
If a chemical quantity exceeds the threshold, then there is a requirement to submit a Top-Screen.
Top-Screen is an on-line consequence assessment tool that evaluates applicable chemicals and quantities to determine if the facility provides a high level of security risk and thus would be required to comply with the substantive requirements of CFATS.
11/2/20075/23/2012 10:55 AM