The Department of Defense has released a list of dates and locations of herbicide tests and storage. They include military bases and locations in the United States, Puerto Rico, and other places outside of the U.S.
The VA has acknowledged a presumptive service connection for exposure to Agent Orange for those serving in-country in Vietnam.
To see the chart with dates/locations or to take a rapid assessment to see if you qualify, click here: http://www.vetshq.com/herbicide-tests-usage-storage-outside-vietnam/