Honestly I don't know.
My original band plan was based off some chart I downloaded that outlined repeater frequencies. Since 146.460 was a defacto LC chat freq and was being used by the Rising Sun LC club for Cruise Moab management, I figured it would be a good choice for the GCLC management frequency.
Unfortunately, during our 2014 July event I was interrupted over the air by some folks who manage a repeater who's RX was 146.460. According to repeaterbook.com, there are 5 repeaters in PA with an RX of 146.460.
I then revised my band plan according to repeaterbook.com and moved the GCLC management frequency to 147.460, and cross checked the other 17 simplex frequencies we use for CMCC trail rides.
It took a bit of time, but they all should still be clean.
After my post I went and looked at the ARRL site for the 2 meter band plan and saw this note on the bottom which would enplane the repeater output of 146.60 in your area.