ATLANTA GAS LIGHT CO — Gas transmission and gathering — incident on 2013-04-17

Gas transmission and gathering incident in DECATUR, DEKALB County, GA. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 365 NATURAL GAS released, $44,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20130041.

Operator ID: 792.

Reported incident date: 4/17/2013 10:50.

Location detail: INTERSECTION

Cause detail: EXCAVATION DAMAGE BY OPERATOR'S CONTRACTOR (SECOND PARTY)

Cause detail: EXCAVATION ISSUE

Cause detail: EXCAVATOR FAILED TO MAINTAIN CLEARANCE AFTER VERIFYING MARKS

Cause detail: OPERATOR'S CONTRACTOR WAS ATTEMPTING TO INSTALL APPROXIMATELY 200 FEET OF 24-INCH STEEL PIPE VIA CONVENTIONAL JACK & BORE WHERE IT APPEARS THE AUGER STRUCK A ROCK ABOUT 30-FEET INTO THE BORE AND VEERED APPROXIMATELY 3-FEET OFF THE BORE PATH STRIKING THE SIDE OF AN EXISTING 16-INCH HIGH PRESSURE STEEL TRANSMISSION PIPELINE CAUSING A LEAK. THE DAMAGE OCCURRED ON THE VERTICAL PIPE WHERE THE 16-INCH TRANSMISSION PIPELINE MADE A DEPTH CHANGE FROM 5-FEET TO 10-FEET DEEP.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — OPERATOR/CONTRACTOR EXCAVATION DAMAGE.

PHMSA indexed costs: $66,696 reported total cost, $34,993.036 in 1984 dollars, $84,481.901 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.