I was on a mission with a friend earlier today, and can confirm that Site 20 is a simulcast cell covering Harford and Baltimore MD counties (for now). I made a submission to the database to reflect the change. It seems to cover the area that Baltimore Electric & Gas (BGE) covers. I've asked the Database Admin. if the system name can be renamed "Exelon Energy P25" since that's what the system covers now (PECO/ACE/Delmarva Power/BGE).
Also, I was not able to swing by the Odessa, DE area, but it seems that Site 60 is now on the air, and the signal was strong coming over the Delaware Memorial Bridge and south into the Bear, DE area. Signal seemed to fade in the northern NCC DE area, and into the Northeast (region, not town) MD area. Can someone check the Odessa DE area for 861.6125 and grab the NAC. I didn't have a chance to due to other commitments at the time I was traveling through the area. I did make a submission to the database with the info above, so it should be there when the admins get to it.