Shannon has been employed in the water and wastewater industry since 1992. He was a Roberts Creek Water District board member from 2007-2012 and the past president of the Umpqua Basin Operators Section of the PNCWA.
Shannon has the following certifications:
- Oregon DEQ Wastewater Collections II
- Oregon DEQ Wastewater Treatment I
- Oregon BCD OIC-Inspector
- Oregon BCD PI-Plumbing Inspector
- Oregon DEQ Asbestos Worker