E3D-EAD APPLICATION STATUS???

Hi Everybody

I am on E3 and my wife is on E3D. She has applied for EAD. we received an acknowledgement from USPS that application has been dropped off in the drop box. The cheque for the fee has not yet been cleared. Its already 3 weeks since we posted it. Is there any way i can get info regarding my wife`s application. what is the normal process. Can anyone please help.

Regards Naveen