I have both EAC and LIN number

Is this normal?
I sent my application on July 21,2014 and I received my biometrics letter from Nebraska with a Lin receipt number.
I had my biometrics done on August 22, 2014.

Then I received another letter from Vermont with a EAC receipt number saying
"Our records indicate that U.S. Citizenship and Immigration Services granted DACA in your case and that your current period of deferred action will expire in less than 100 days. If you wish to avoid a lapse in your period of deferred action and employment authorization, you must file a DACA renewal request with USCIS as soon as possible."

Now I have 2 Lin numbers and 2 EAC numbers all on initial review.
I'm really confused...

I would really appreciate your input! Thank you~

The EAC # is from you last application when you first applied. The LIN # is your new case number, and the letter you received is just a courtesy reminder to renew your DACA. Read it carefully and it says if you had already applied to renew to disregard the letter.

yeah your EAC receipt notice was your old case number... just disregard that notice
everybody have received it...