C - Hanford Site

WHC-SD-EN-TI-136, Rev. 0
CONTENTS
1.0 INTRODUCTION .. .. ........ ....... ........ ... 1
2.0 HISTORY .. ...... ....... ....... ........ .. 1
3.0 182-N-1-DT, 182-N-2-DT, AND 182-N-3-DT. .. ..... ....... .. 1
4.0 105-N-LFT .. ..... ........ ........ .... ...... 3
5.0 100-N-SS-27 AND 100-N-SS-28. .. ........ ....... .... 8
6.0 CLOSURE RECOMMENDATIONS: TANK 100-N-SS-28. .. ..... ....... 15
1.0 SUMMARY .. ...... ....... ........ ....... .. 15
8.0 REFERENCES. .. ..... ........ ....... ........ 15
APPENDIXES:
A MEMO DATED 5-18-93 .. ...... ....... ........ .... A-i
B CORRESPONDENCE. ... ....... ........ ....... ... B-i
C UNUSUAL OCCURRENCE REPORTS. ... ....... ........ .... C-i
D VALIDATED SAMPLE DATA. .. ..... ....... ........ ... D-i
FIGURES:
1. Locations of Underground Storage Tanks at the 100-N Area. ... .... 2
2. Sampling Locations at 182-N-1-DT, 182-N-2-DT, and 182-N-3-DT. .. ... 4
3. Sampling Locations at 105-N-LFT Tank .. ..... ........ ... 7
4. Soil Excavation and Sample Collection at Tank 100-N-SS-27
(3.7 m [12 ft] Below Grade Surface). .. ..... ........ .. 9
5. Soil Excavation and Sample Collection at Tank 100-N-SS-28
(0.46 m and 0.9 m [1.5 ft and 3 ft] Below Grade Surface) .. ..... 10
6. Soil Excavation and Sample Collection at Tank 100-N-SS-28
(3 m [10 ft] Below Grade Surface) .. ... ....... ....... 12
7. Soil Excavation and Sample Collection at Tank 100-N-SS-28
(10.9 cm [36 ft] Below Grade Surface. ... ....... ...... 13
8. Soil Excavation and Sample Collection at Tank 100-N-SS-28
(-12.2, -14.3, and -16.7 m [-40, -47, and -55 ft]) . ..........14
TABLES:
1. Tank Identification. .. ..... ........ ....... .... 3
2. Sample Analyses Results. .. ..... ........ ..........5
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