KERR-MCGEE O&G: Groundwater Impacted – REPORT CONFIRMED BENZENE GROUNDWATER IMPACTS

Date received 5/18/2012 


WELD COUNTY, COLORADO 


Operator: KERR-MCGEE OIL & GAS ONSHORE LP Oper. No. 47120 Address: P O BOX 173779 ATTN: ASHLEY COCCIOLONE DENVER , CO 80217-3779 Phone: (720 )929-6000 Fax: (720 )929-7461 Operator Contact: PAUL SCHNEIDER


Current land use: PASTURE
Ground water impacted: YES
Cause of spill: 'Historical Impacts - There was no indication that dump lines of tank fittings were leaking'


LINK

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Immediate Response:

THE WELLS WERE SHUT IN AND PETROLEUM HYDROCARBON IMPACTED SOIL IS BEING EXCAVATED. GROUNDWATER WAS ENCOUNTERED IN THE EXCAVATION AT ~7` BGS. THE LABORATORY ANALYTICAL REPORT CONFIRMED BENZENE GROUNDWATER IMPACTS (19 UG/L) ABOVE THE CGWQS.

Emergency Pits:

NA

How extent determined:

SOIL AND GROUNDWATER SAMPLES WILL BE COLLECTED FROM THE EXCAVATION. THE ANALYTICAL RESULTS AND EXCAVATION DETAILS WILL BE PROVIDED ON A FORM 27.

Further Remediation

WILL BE PROVIDED ON A FORM 27.

Prevent Problem:

HISTORICAL IMPACTS. THERE WAS NO INDICATION THAT DUMP LINES, TANKS OR FITTINGS WERE LEAKING.

Detailed Description:

DURING NEW TANK BATTERY CONSTRUCTION, FIELD CREWS ENCOUNTERED HISTORICAL PETROLEUM HYDROCARBON IMPACTED SOIL ASSOCIATED WITH AN ABANDONED CEMENT WATER TANK.

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Data Compiled by: Shane Davis

Source: COGCC