URGENT! ECM - TELB file question

Our TELB file set up in our sister environment keeps growing and growing 
out of control.
I have tried to match the setup of the main environment to see if there is 
a discrepancy in the set up, but cannot pinpoint anything.
I have gone into the notification log and tried deleting very old entries, 
but it does not seem to affect it.
The file's size has become an major problem.  There are records in it from 
2004.  I am reluctant to simply drop records using SQL  for fear it is not 
the proper way to handle, given ECM' s link to other files with the guid.
If anyone has any insight on what we are missing.......Please help!
Thanks,
Sheila

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