Question regarding earthquake shut-off valve fee

[Devin E.]

I just received a call from my tenants and they notified me that the gas was cut off due to an earthquake valve being activated. I spoke with the gas company and they said that either one of the tenants could have bumped/hit the gas meter or a large truck could have driven down the street and activated it. There will be an $80 fee for the gas company to come and turn the gas back on. I am curious if this is a fee that the tenant would pay as the utilities are in their name or is this a fee that i should pay out of my pocket? This is a duplex property and only one units gas valve was activated located in Wilmington CA.

Thank you for any help or advice.

Devin