40 CFR § 60.4335a - How do I demonstrate compliance with my NO emissions standard without using a NO CEMS if I use water or steam injection?
---
identifier: "/us/cfr/t40/s60.4335a"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 60.4335a - How do I demonstrate compliance with my NO emissions standard without using a NO CEMS if I use water or steam injection?"
title_number: 40
title_name: "Protection of Environment"
section_number: "60.4335a"
section_name: "How do I demonstrate compliance with my NO emissions standard without using a NO CEMS if I use water or steam injection?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "60"
part_name: "STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES"
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. 7401"
regulatory_source: "36 FR 24877, Dec. 23, 1971, unless otherwise noted."
cfr_part: "60"
---
# 60.4335a How do I demonstrate compliance with my NO emissions standard without using a NO CEMS if I use water or steam injection?
If you qualify and elect to demonstrate continuous compliance according to the provisions of § 60.4333a(c)(1), you must install, calibrate, maintain, and operate a continuous monitoring system to monitor and record the fuel consumption and the water or steam to fuel ratio fired in the combustion turbine engine consistent with the requirements in § 60.4342a. Water or steam only needs to be injected when a fuel is being combusted that requires water or steam injection for compliance with the applicable NO<sub>X</sub> emissions standard.