+--------------------------------+ +----------------------+ |GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34502 | +--------------------------------+ +----------------------+ +-----------------------------------+-------------------------+ LICENSEE: COGEMA MINING, INC. NOTIFICATION DATE: 07/10/98 CITY: REGION: 4 NOTIFICATION TIME: 10:11 [ET] COUNTY: JOHNSON COUNTY STATE: WY EVENT DATE: 07/08/98 LICENSE#: SUA-1341 AGREEMENT: N EVENT TIME: 09:55 [MDT] DOCKET: LAST UPDATE DATE: 07/10/98 +-----------------------------+ PERSON ORGANIZATION JOHN PELLET RDO FRED COMBS, NMSS EO +------------------------------------------------+ DANIEL GILLEN NMSS NRC NOTIFIED BY: JOHN VASELIN, RAD SAF OFF HQ OPS OFFICER: DICK JOLLIFFE +------------------------------------------------+ EMERGENCY CLASS: NOT APPLICABLE 10 CFR SECTION: NCFR NON CFR REPORT REQMNT +-----------------------------------+-------------------------+ EVENT TEXT +-----------------------------------+-------------------------+ -28,000 GALLONS OF WATER CONTAINING LOW LEVEL OF U3O8 SPILLED ONTO GROUND- FROM 0955 TO 2045 MDT ON 07/08/98, APPROXIMATELY 28,213 GALLONS OF WATER CONTAINING 2 MILLIGRAMS/LITER U3O8 (DRINKING WATER STANDARD IS 5 MILLIGRAMS/LITER U3O8) SPILLED ONTO THE GROUND AT THE COGEMA CHRISTENSEN MINE UNIT #5 IN CAMPBELL COUNTY, WYOMING. APPROXIMATELY 43.4 GPM SPILLED FROM A TWO INCH RUBBER HOSE WHICH CAME LOOSE FROM A WELL HEAD PIPE ON INJECTION WELL #5AU55-1. THE MINE IS AN IN-SITU NATURAL URANIUM MINE USING "BARREN LIXIVIANT" MINING SOLUTION. THE LICENSEE STOPPED THE SPILL AND REPLACED THE HOSE AND CLAMPS. THE SPILL DID NOT MOVE OFFSITE OR REACH A DRAINAGE AREA, STREAM, OR RIVER. THE LICENSEE HAS SENT A SAMPLE OF THE SOIL OFFSITE TO BE ANALYZED AND IS INVESTIGATING THE CAUSE. THE LICENSEE AND NRC ASSESSED THIS EVENT AND DETERMINED THAT THIS EVENT POSES LITTLE OR NO APPARENT RISK OR ADVERSE IMPACT TO PEOPLE, ANIMALS, WILDLIFE OR THE ENVIRONMENT AND THAT NO NRC RESPONSE IS REQUIRED. THE LICENSEE NOTIFIED THE WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY AND PLANS TO SUBMIT A WRITTEN REPORT TO THE NRC WITHIN 7 DAYS IN ACCORDANCE WITH THE LICENSE CONDITION SECTION 12.4. +-----------------------------------+-------------------------+ +--------------------------------+ +----------------------+ GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34575 | +--------------------------------+ +----------------------+ +-----------------------------------+-------------------------+ LICENSEE: COGEMA MINING, INC. NOTIFICATION DATE: 07/24/98 CITY: REGION: 4 NOTIFICATION TIME: 17:15 [ET] COUNTY: JOHNSON STATE: WY EVENT DATE: 07/22/98 LICENSE#: SUA-1341 AGREEMENT: N EVENT TIME: 07:00 [MDT] DOCKET: LAST UPDATE DATE: 07/24/98 +-----------------------------+ PERSON ORGANIZATION TOM STETKA RDO LARRY CAMPER, NMSS EO JOE HOLONICH NMSS NRC NOTIFIED BY: JOHN VASELIN HQ OPS OFFICER: STEVE SANDIN +------------------------------------------------+ EMERGENCY CLASS: NOT APPLICABLE 10 CFR SECTION: NINF INFORMATION ONLY +-----------------------------------+-------------------------+ EVENT TEXT +-----------------------------------+-------------------------+ MINOR LEAKAGE OF BYPRODUCT SOLUTION FROM THE EVAPORATION POND AT 0700 MDT ON 07/22/98 DURING A ROUTINE VISUAL INSPECTION OF THE EVAPORATION POND AT THE IRIGARAY MINE, A SMALL HOLE IN THE CHLORINATED POLYVINYL (CPE) LINER ABOUT THE SIZE OF A BASEBALL WAS DISCOVERED BELOW THE WATERLINE. ACTION WAS TAKEN TO EVACUATE (PUMP DOWN) THE POND TO PREVENT ANY RELEASE. THE LICENSEE HAS INCREASED THE NORMAL INSPECTION FREQUENCY FROM WEEKLY TO DAILY AND PLANS TO DETERMINE APPROPRIATE CORRECTIVE ACTIONS. THE EVAPORATION POND IS APPROXIMATELY 200 FEET SQUARE WITH A MAXIMUM DEPTH OF 2 FEET, AND IT CONTAINS A BYPRODUCT SOLUTION OF MOSTLY DISSOLVED SOLIDS, SALTS, AND 1.4 MG/LITER NATURALLY OCCURRING URANIUM (U3O8). THE LICENSEE CHARACTERIZED THE LEAKAGE THROUGH THE TORN LINER AS MINOR SINCE THE SURROUNDING SOIL WAS NOT SPONGY AND SINCE NO LEAKAGE WAS DETECTED ON THE INSTALLED LEAK DETECTION SYSTEM OF THE STANDPIPE. THERE WAS NO OFFSITE RELEASE OR ADVERSE IMPACT TO THE ENVIRONMENT. THE LICENSEE NOTIFIED THE STATE OF WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY AND PLANS TO SUBMIT A WRITTEN REPORT TO THE NRC WITHIN 30 DAYS. +-----------------------------------+-------------------------+ +--------------------------------+ +----------------------+ GENERAL INFORMATION or OTHER | |EVENT NUMBER: 34617 | +--------------------------------+ +----------------------+ +-----------------------------------+-------------------------+ LICENSEE: COGEMA MINING, INC. NOTIFICATION DATE: 08/07/98 CITY: REGION: 4 NOTIFICATION TIME: 16:58 [ET] COUNTY: JOHNSON STATE: WY EVENT DATE: 08/06/98 LICENSE#: SUA-134 AGREEMENT: N EVENT TIME: 12:00 [MDT] DOCKET: LAST UPDATE DATE: 08/07/98 +-----------------------------------+-------------------------+ PERSON ORGANIZATION WILLIAM JOHNSON RDO FRED COMBS, NMSS EO JOE HOLONICH NMSS NRC NOTIFIED BY: JOHN VASELIN HQ OPS OFFICER: DICK JOLLIFFE +------------------------------------------------+ EMERGENCY CLASS: NOT APPLICABLE 10 CFR SECTION: NINF INFORMATION ONLY +-----------------------------------+-------------------------+ EVENT TEXT +-----------------------------------+-------------------------+ -GROUND WATER MONITOR WELL AT URANIUM LEACH MINE PLACED IN EXCURSION STATUS- AT 1200 MDT ON 08/06/98, SITE PERSONNEL PLACED GROUND WATER MONITOR WELL #MW-89, AT THE COGEMA MINING, INC, CHRISTENSEN IN-SITU URANIUM LEACH MINE IN JOHNSON COUNTY, WY, IN EXCURSION STATUS. THIS WAS DONE AFTER DETERMINING THAT THE LEVELS OF CHLORIDES AND ALKALINITY IN A SAMPLE OF THE WELL WATER WERE ABOVE THE UPPER CONTROL LIMITS. THE CONDUCTIVITY LEVEL OF THE SAMPLE REMAINED BELOW THE UPPER CONTROL LIMIT. AT 1100 MDT ON 08/07/98, SITE PERSONNEL ANALYZED A SECOND SAMPLE OF THE WELL WATER (VERIFICATION SAMPLE) AND DETERMINED THAT THE CHLORIDE LEVEL OF THE SAMPLE WAS 14.4 MILLIGRAMS PER LITER (UPPER CONTROL LIMIT IS 13.6 MILLIGRAMS PER LITER) AND THE ALKALINITY LEVEL OF THE SAMPLE WAS 121.9 MILLIGRAMS PER LITER (UPPER CONTROL LIMIT IS 121.0 MILLIGRAMS PER LITER). THE LICENSEE PLANS TO PUMP MORE WATER FROM THE AREA OF THE MONITOR WELL IN ORDER TO DECREASE THE CHLORIDE AND ALKALINITY LEVELS. THERE WERE NO SPILLS OR RADIOLOGICAL RELEASES ASSOCIATED WITH THIS EVENT. THE LICENSEE NOTIFIED THE WYOMING DEPARTMENT OF ENVIRONMENTAL QUALITY AND PLANS TO SUBMIT A WRITTEN REPORT OF THIS EVENT TO THE NRC WITHIN 7 DAYS. +-----------------------------------+-------------------------+