Frequently Asked Questions (FAQs) for Method 207

8/25/16

1. Is Method 207 the pre-survey for wet milling ethanol facilities or for measuring
isocyanates? On the EPA website I have found several references to EPA Method 207
that deal with sampling of isocyanates, while I found others that are the Pre-survey for
wet milling ethanol facilities.

There's been some confusion regarding Method 207. The Method 207 designation was first
given to a method for isocyanates that was proposed in 1997 (62 FR 6432), but was never
finalized. That method for isocyanates is now Other Test Method 14 (OTM-14) and can be
found on our website here. The Method 207 designation is now assigned to the Pre-survey
Procedure for Corn Wet-milling Facility Emissions which was promulgated in 2008 (73 FR
30775). This pre-survey procedure was formerly Other Test Method 1 1 (OTM-11) which we
will soon be clarified on our website.

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