Section 8-20-413 - Specifications of liquefied petroleum gas as defined in GPA 2140(1) Liquefied petroleum gas shall comply with the specifications of GPA 2140, "liquefied petroleum gas specification", as revised as of January 1, 2003, including revisions that refer to ASTM international test of specifications.(2) (Deleted by amendment, L. 2003, p. 1827, § 20, effective May 21, 2003.)(3) Any changes to any standards promulgated by the GPA after January 1, 2003, shall be reviewed by the director of the division of oil and public safety. After such review, the director may adopt any such changes by rule.L. 73: p. 1069, § 9. C.R.S. 1963: § 100-5-13. L. 91: Entire section amended, p. 1345, § 1, effective April 19. L. 2003: Entire section amended, p. 1827, § 20, effective May 21. For the legislative declaration contained in the 2003 act amending this section, see section 1 of chapter 279, Session Laws of Colorado 2003.