Owners and operators subject to this subchapter may use any of the financial assurance mechanisms as specified in Subchapter C of this chapter (relating to Financial Assurance Mechanisms for Closure, Post Closure, and Corrective Action) to demonstrate financial assurance for closure except:     
       (1) a pay-in trust fund may not be used; and      
       (2) a surety bond guaranteeing performance may not be used unless the owner or operator is required to provide financial assurance under §332.47 of this title (relating to Permit Application Preparation).      
     Source Note:        The provisions of this §37.931 adopted to be effective December 30, 1996, 21 TexReg 12297; amended to be effective March 21, 2000, 25 TexReg 2347; amended to be effective November 4, 2004, 29 TexReg 10116