40 CFR § 1090.1835 - Alternative procedures for certified pentane blenders.

---
identifier: "/us/cfr/t40/s1090.1835"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 1090.1835 - Alternative procedures for certified pentane blenders."
title_number: 40
title_name: "Protection of Environment"
section_number: "1090.1835"
section_name: "Alternative procedures for certified pentane blenders."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "U"
subchapter_name: "AIR POLLUTION CONTROLS"
part_number: "1090"
part_name: "REGULATION OF FUELS, FUEL ADDITIVES, AND REGULATED BLENDSTOCKS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7414, 7521, 7522-7525, 7541, 7542, 7543, 7545, 7547, 7550, and 7601."
regulatory_source: "85 FR 78469, Dec. 4, 2020, unless otherwise noted."
cfr_part: "1090"
---


# 1090.1835 Alternative procedures for certified pentane blenders.

(a) An auditor must perform the procedures specified 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.

[85 FR 78469, Dec. 4, 2020, as amended at 90 FR 4371, Jan. 15, 2025]