C - Hanford Site

RL--WHC-NREACTOR-1991-10Oo WHC-SD-EN-TI-136, Rev. 0 Final Report
UNOFFICIAL COPY (Incomplete)
OCCURRENCE REPORT
SS-27 site, tank 100N-SS-28 was removed in July 1991. At the
time of the removal of IOON-SS-28, saturated soil was
observed in the tank depression. There had been no petroleum
in the 100N-SS-28 tank. The saturated soil was approximately
12 feet below land surface. The soil was removed and placed
in four 55 gallon hazardous waste drums and disposed of as a
hazardous waste. In July and August of 1991 groundwater
samples were collected and tested for volatile organics. The
analytical results indicated that no hydrocarbon
contamination is present in the groundwater.
In September 1991 the UST site was excavated from 14 feet to
27 feet below the land surface. At that depth, contaminated
soil was found. This soil was removed and placed in plastic
sheeting, bermed, and barricaded.
In order to determine the extent of the petroleum
contamination, it is planned to drill two wells, since the
site may not be able to be clean closed. These wells are to
be placed at the plume location and down gradient of the
service station. This additional work is planned to be
completed by mid-December 1993.
The corrective actions associated with this incident are
also being tracked on occurrence report RL--WHC-WHC600EM-
1990-0337.
30. SIMILAR OCCURRENCE REPORT NUMBERS:
RL--WHC-WHC600EM-19go-0337
31. DOE FACILITY REPRESENTATIVE INPUT:
This report has been reviewed and revised several times to
clarify and correct mistakes. It has been reviewed and found
to be acceptable at this time. The reviews have been done by
both Charlie Loftis, DOE-RL site representative as well as by
D.W. Templeton, Chief, Facility Surveillance Branch.
Entered by: Templeton, Dave W. Date: 05/29/92
1993/02/02 page 6
C- 16