Non-Road and Stationary Engines Regulations

Non-road engines (excluding locomotives, marine vessels, underground mining equipment, and hobby engines) are regulated under 40 CFR 89. Here are a couple of useful summaries:

Emission Standards: USA: Nonroad Diesel Engines

John Deere Brochure


This web site summarizes stationary diesel engine regulation under NSPS Subpart IIII and NESHAP ZZZZ:

Emission Standards: USA: Stationary Diesel Engines

These are good overviews of stationary engine regs (CI & SI):

Final Rules Promulgated for Stationary RICE

Iowa DNR Fact Sheet

8/20/2010 UDATE:
New amendment of NESHAP Subpart ZZZZ to cover SI RICE at area sources and at major sources for small engines (LTE 500 bHp).

Final regulation:

Final Amendment, NESHAP ZZZZ, Small and Area Srcs

Helpful resources:
Iowa DNR ZZZZ page

Nebraska DEQ collection of ZZZZ references
Note especially the "4Z Important Dates" document.

Texas CEQ ZZZZ references
Here's an article from Air Pollution Consultant, March 2011: "Comment Sought on Operating Emergency Engines in Demand Response Programs."