Dial 8-1-1 before you dig State law requires property owners to inform the utilities of any type of work involving the movement of earth with powered equipment. The person who is doing the digging should place the one call notification. If you have hired an excavator to do the work, the excavator is required by law to call to have lines located (refer to Section 5 of PA Act 287). It does not matter how deep you are digging or where you are digging within the Commonwealth of Pennsylvania.   The PA One Call center is open 24-hours a day, 7 days a week, every day of the year.   State law requires a three (3) business day notice (does not include state holidays or weekends), but not more than ten (10) business days prior to the start of excavation. A business day begins at 12:00:00 a.m. and ends at 11:59:59 p.m. The first lawful start date for your excavation is determined by your scheduled excavation date (the day you plan to start digging), work should not begin prior to your first lawful start date but no later than 10 business days from the day of your call.   Frequently Asked Questions   PA1Call Brochure