Section 1090.1835 - Alternative procedures for certified pentane blenders(a) An auditor must use the procedures in this section instead of or in addition to the applicable procedures in § 1090.1810 for a certified pentane blender that blends certified pentane into PCG under § 1090.1320(b) .(b) An auditor must apply the procedures in § 1090.1830 by substituting "pentane" for "butane" in all cases.