Tex. Spec. Dist. Code § 8825.106
In addition to a fee imposed under Section 8825.105, the district may impose a reasonable fee or surcharge for an export fee using one of the following methods:
Added by Acts 2009, 81st Leg., R.S., Ch. 1139 (H.B. 2619), Sec. 1.05, eff. April 1, 2011.