File Age Monitor - monitor by wildcards or directory

I have an application which dumps X number of files into a directory roughly every hour.  This information is sensitive and we need to ensure this data dump happens successfully.  I have been asked to alert certain staff if the files in the directory are over 1.5 hours old (for argument sake).

I have found the File Age Monitor but this would require me to setup a monitor per file and would require the applications team to notify us of a new file download.  I hate relying on people or status solutions.  Is it possible to use wildcards or a solution like "if any file in this directory is older than 1.5 hours?"  Regarding wildcards; all files in the directory are HTM files.

Any assistance would be greatly appreciated.

Thanks, Matt