eCFR Reference Browser

---

title: "40 CFR §90.415"

source: "https://www.ecfr.gov/current/title-40/section-90.415"

title_number: "40"

volume_number: "22"

chapter_number: "Unknown"

subchapter_code: "C"

subchapter_subject: "AIR PROGRAMS (CONTINUED)"

part_code: "90"

part_subject: "CONTROL OF EMISSIONS FROM NONROAD SPARK-IGNITION ENGINES AT OR BELOW 19 KILOWATTS"

subpart_code: "E"

subpart_subject: "Gaseous Exhaust Test Procedures"

section_number: "90.415"

section_subject: "Raw gaseous sampling procedures."

cfr_reference: "40 CFR 90.415"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Parts 87 to 95"

revised_date: "Revised as of July 1, 2017"

publication_date: "As of July 1, 2017"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

Fit all heated sampling lines with a heated filter to extract solid particles from the flow of gas required for analysis. The sample line for HC measurement must be heated. The sample line for CO, CO2 and NOX analysis may be heated or unheated.

§90.415 - Raw gaseous sampling procedures.