Each irrigator, upon being licensed with the commission, shall obtain a seal, as described in §344.41 of this title (relating to Seal Design). Licensed irrigators shall not engage in any landscape irrigation services without physical possession of the seal and the license. The irrigator is responsible for the security of the seal and for ensuring that it shall not be used in a manner that does not meet the requirements of this chapter.
30 Tex. Admin. Code § 344.40