I was not asked or notified when I was listed as an alternate DPOA which was written in 2013. Got a phone call a week ago informing me that the 1st named DPOA no longer wanted the responsibilities and had terminated her DPOA. Do I have to officially decline in writing and have it notarized?
Yes, write a letter saying that you decline being this person's Power of Attorney, getting it notarized would make it more official. Send this letter to the person, and if you knew that an attorney had drawn up the document, send him/her a copy.