Hello Steven,
The thing is that you cannot be as specific as that, but I would create an ACL and use the log option for that particular permit entry.
here is a configuration example for a logging list:
http://community.spiceworks.com/how_to/show/388-cisco-asa-sending-email-alerts
any other question..Sure..Just remember to rate all of the helpful posts
Julio
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC