Ready to dig? Know what's below. August 11 is National 811 Day, a reminder to Call Before You Dig. Call 811 three business days before digging. It's the LAW! There are more than 20 million miles of underground utilities in the United States. Digging without knowing the location of these utilities is dangerous. Stay safe by calling 811 before you dig. For more safety tips, visit www.Pa1Call.org LUGI Energy Services ppl PPL Electric Uses UGI Energy to do more Pennsylvania 811 Ready to dig ? Know what's below . August 11 is National 811 Day , a reminder to Call Before You Dig . Call 811 three business days before digging . It's the LAW ! There are more than 20 million miles of underground utilities in the United States . Digging without knowing the location of these utilities is dangerous . Stay safe by calling 811 before you dig . For more safety tips , visit www.Pa1Call.org LUGI Energy Services ppl PPL Electric Uses UGI Energy to do more Pennsylvania 811