261.64—How will we determine whether a State's work verification procedures ensure an accurate work participation measurement?
        
        (a) 
         We will determine that a State has met the requirement to establish work verification procedures if it submitted an interim Work Verification Plan by September 30, 2006 and a complete Work Verification Plan that we approved by September 30, 2007.
    
    
    
    
        
        (2) 
         The State certifies that the plan includes all the information required by  § 261.62(b) and that it accurately reflects the procedures under which the State is operating.
    
    
        
        (c) 
         For conduct occurring after October 1, 2007, we will use the single audit under OMB Circular A-133 in conjunction with other reviews, audits, and data sources, as appropriate, to assess the accuracy of the data filed by States for use in calculating the work participation rates.