<_x0034_00989644>

400989644 19 2016-02-16T13:57:12.233-07:00 10439 CARRIZO NIOBRARA LLC

500 DALLAS STREET #2300

HOUSTON TX 77002 eric johansson 713 358-6227 281 770-2735 eric johansson ehs supervisor 2016-02-16T13:57:12.233-07:00 2016-02-16T13:57:12.22-07:00 444157 in process ericjohansson 2016-02-16T13:41:04.937-07:00 ericjohansson eric.johansson@crzo.net 0.00000 eric.johansson@crzo.net ericjohansson ericjohansson 2016-02-16T13:57:10.187-07:00 400943955 400989644 ALLISON, RICK 2015-11-27T00:00:00-07:00 TANK BATTERY 05 123 37073 WELD nwnw 36 9n 59w 6 Y OTHER overcast, snow on the ground ~20F 0 0 ARRIVING ON LOCATION JUST BEFORE DARL ON 11/27/15 CARRIZO PERSONNEL ARRIVED ON LOCATION TO FIND AN UPSET THROUGH FLARE STACK RESULTING IN APPROXIMATELY 20 BBLS OF OIL SPILLED ON THE GROUND. ALL LIQUIDS WERE CONAINED ON PAD, NOTHING GOT OFF LOCATION. WELLS WERE SHUT IN IMMEDIATELY AND SECURED FOR THE NIGHT. CREWS WERE MOBILIZED ON 11/28/15 TO BEGIN CLEAN UP. CREWS ARE STILL ON LOCATION CLEANING AND EXCAVATING IMPACTED SOILS AS OF 11/29/15. IMPACTED SOIL WILL BE HAULED OFF AND DISPOSED OF AT PROPER FACILITY. 400943955 true 2015-11-27T00:00:00-07:00 40.712712 -103.930850 FEE 0 0 0 true <_x0032_7_approved>false S false well pad >=5 and <100 0 0 0 0 true false true false false 0 2015-11-29T13:48:40.89-07:00 400989644 ALL INSTALL OF HIGH LEVEL FLOATS HAVE BEEN INSTALLED ON LOCATION AND ALL SOILS HAVE BEEN HAULED OFF TO DISPOSAL, SITE CLEARED VIA SOIL SAMPLING AND REQUEST FOR CLOSURE REGARDING THIS INCIDENT. 400989644 400989644 FORM 19 SUBMITTED 400989644.pdf 400989644 1 SPILL 2015-11-28T00:00:00-07:00 COGCC 24 HOUR NUMBER

LEFT VOICE MESSAGE DETAILING INCIDENT

877 518-5608 400989644 1 2016-02-16T00:00:00-07:00 false true false false ARRIVING ON LOCATION JUST BEFORE DARL ON 11/27/15 CARRIZO PERSONNEL ARRIVED ON LOCATION TO FIND AN UPSET THROUGH FLARE STACK RESULTING IN APPROXIMATELY 20 BBLS OF OIL SPILLED ON THE GROUND. ALL LIQUIDS WERE CONAINED ON PAD, NOTHING GOT OFF LOCATION. THE CAUSE OF THE UPSET WAS FROM A PROCESS VESSEL OVERPRESSURING ALLOWING LIQUIDS TO BUILD INSIDE. LIQUID LEVELS REACHED THE MAXIMUM CAPACITY OF VOLUME ALLOWING EXCESS LIQUIDS TO BE RELEASED VIA THE FLARE STACK RESULTING IN THE SPILL. ALL VESSELS ON THE LOCATION HAVE HAD HIGH LEVEL FLOAT SHUT OFF INSTALLED AS OF THE FIRST WEEK OF JANUARY 2016. THESE FLOATS SHOULD DETECT ANY HIGH LEVEL LIQUIDS INSIDE PROCESS VESSELS AND SHOULD PREVENT THE UPSET THAT OCCURRED FROM HAPPENING AGAIN. 250 true false false 0 0 Thread was being aborted.