Section 550 of the Department of Homeland Security Appropriations Act of 2007, Pub. L. 109-295 (Section 550), 
directed the Department of Homeland Security to promulgate and enforce 
regulations to enhance the security of the nation's high risk chemical 
facilities. On April 9, 2007, the Department issued an Interim Final 
Rule, implementing this statutory mandate. (72 FR 17688). Section 550 
requires a risk-based approach to security. To facilitate this 
approach, the Department is employing a risk assessment methodology 
known as the Chemical Security Assessment Tool (CSAT). The CSAT is a 
series of public web-based computer applications: Help Desk, User 
Registration, Top-Screen, Security Vulnerability Assessment, Site 
Security Plan, and Chemical-terrorism Vulnerability Information (CVI) 
Authorization. All information collected supports the Department's 
effort to reduce the risk of a successful terrorist attack against 
chemical facilities. These CSAT collections either directly or 
indirectly support the identification of high risk facilities, the 
determination of the risk tiers of the facilities, the review and 
approval of assessments and plans for security measures at the 
facilities, and/or the protection of Chemical-terrorism Vulnerability 
Information that would, if disclosed, substantially assist terrorists 
in planning and targeting the facilities.
    The Office of Management and Budget is particularly interested in 
comments which:
    1. Evaluate whether the proposed collection of information is 
necessary for the proper performance of the functions of the agency, 
including whether the information will have practical utility;
    2. Evaluate the accuracy of the agency's estimate of the burden of 
the proposed collection of information, including the validity of the 
methodology and assumptions used;
    3. Enhance the quality, utility, and clarity of the information to 
be collected; and
    4. Minimize the burden of the collection of information on those 
who are to respond, including through the use of appropriate automated, 
electronic, mechanical, or other technological collection techniques or 
other forms of information technology, e.g., permitting electronic 
submissions of responses.