C - Hanford Site

WHC-SD-EN-TI-136, Rev. 0
RL--WHC-WHC600EM-1990-0337 10 Day Update
UNOFFICIAL COPY (Incomplete
OCCURRENCE REPORT
6. SYSTEM, BLDG., OR EQUIPMENT 7. UCNI? 8. PLANT AREA
Gas Station Tank No 100 N
9. DATE AND TIME DISCOVERED 10. DATE AND TIME CATEGORIZED
12/18/90 1300 12/18/90 1400
11. DOE NOTIFICATION:
12/18/90 1500
12. OTHER NOTIFICATIONS
12/18/90 Ganeo, Ken
13. SUBJECT OR TITLE OF OCCURRENCE
Leaking Underground Storage Tank
14. NATURE OF OCCURRENCE
15. DESCRIPTION OF OCCURRENCE
During routine Underground Storage Tank (UST) removal as
described in WHC-SP-0472, Implementation Plan for Title 40
CFR Regulations, Part 280 and 281, tank 100N-SS-27, located
at LOON area was found to have contaminated soil adjacent to
the tank. This UST had been utilized to store unleaded
gasoline. Visual inspection of the tank did not indicate
the tank integrity had been breached. Contaminated soil was
found on the lower one third of the tank on the opposite end
of the fill connection. It appears that an unknown quantity
of unleaded gasoline had been spilled over the years,
possibly from the adjacent tank, whose fill connection is
within five feet of where the contamination was found.
16. OPERATING CONDITIONS OF FACILITY AT TIME OF OCCURRENCE
Tank 10ON-SS-27 had been taken out of service after routine
tightness testing determined the tank had a leak.
1992/02/27 C6page 2