Regulations, Violations, Permits, VOC, HAP and Such

WHERE TO FIND INFORMATION ON EXEMPT COMPOUNDS

Q:  Can you provide a Web reference for the list of “exempt compounds”?

A:  This sounds like such a simple question, yet I spent at least an hour on the Internet trying to get this information.  In this particular case you need to know that there is no definition for “exempt compounds”.  Rather, the list falls into the definition of “Volatile Organic Compounds”.  The reason I know this is that I have several old fashioned hard copy manuals that provide lists of all sorts of environmental tables, and I discovered that the list for exempt compounds is published in 40CFR Part 51.100(s).  Good news, but how does one find the list on the Internet, especially since 40CFR Part 51.100(s) was published before the Internet came into existence.

Here is what I learned, and I encourage you to make a note of the following sequence for all your future searches of the Federal Register:

Start at www.epa.gov, then go to Laws and Regulations (which you‘ll see on the left side), then Regulations and Proposed Rules, then Codified Regulations.  Finally, you will be rewarded with a form in which you can enter the specifics of the CFR you are searching for, in this case Title 40 CFR Part 51.100.  It works, but you need lots of patience to get there.  You can download a text or Adobe pdf file of the section.

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