N.Y. Comp. Codes R. & Regs. tit. 16, § 753-3.14 – Emergency requirements.

(a) proceed to evacuate his or her employees and all other endangered persons from the immediate vicinity to the best of his or her ability; and
(b) immediately notify 911 and the operator of the affected facility of the exact location, nature of the emergency and of the underground facility which is affected.

In the event of an emergency involving danger to life, health or property as a result of damage to an underground facility containing gas or liquid petroleum products or as a result of an electrical short or escape of gas or hazardous fluids, the excavator shall: