I called PDX parking - (503) 460 - 4234. There is no penalty. I just need to go to the parking attendance. They will look up by the license plate, and calculate the fee based on the date of entry. Thank god! I love PDX. Posting this message for those who are in my situation worrying like hell. Hope this helps.
Not sure, probably maximum. Maybe y of it flight agenda/ticket can be used to verify what is owed. I am sure others have lost tickets in the past. But I do not know for sure.
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