Jay-
Are you trying to monitor the 800MHz LTR system or the 154MHz VHF system? Looks like there's more than one system for Parkersburg, and looking at the notes, it seems that may have switched back and forth between the two systems in the past. If you're monitoring just one, you might want to look for them on the other. I'm not nearby, so hopefully someone closer to you can assist. If they've switched to the Wood County SIRN system, that looks to be completely encrypted--so little help there.
Best of luck,