https://drive.google.com/open?id=128p8DXxrUFFCRMUKLfzrleWpSLM&usp=sharing - my map of fire stations - created Nov 14 2016
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https://sites.google.com/site/californiafirenow/Home/imperial-county
As of July 2010 ish there is a Imperial County live scanner audio feed at radioreference.com