136B.4  Fees — rules.
  The department shall establish a fee schedule to defray the costs of the certification and credentialing programs established pursuant to section 136B.1 and the testing conducted and the written reports provided pursuant to section 136B.3.
  The department shall adopt rules, pursuant to chapter 17A, to implement this chapter.
88 Acts, ch 1237, §4
; 
89 Acts, ch 224, §4