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Chronology of Actions/Investigations
Area of Concern 68
Year |
Month |
Action/Results |
Action |
Project |
Prior to 1960 |
Unknown |
Area includes metal slag/debris storage area from Wheelabrator operations adjacent to Building 90-2. |
CSSA |
NA |
2001 |
January - February |
Two soil gas survey samples were collected and analyzed for chlorinated and aromatic volatile organics. No target VOC compounds were detected. |
Parsons |
DO 5084 |
2007 |
December |
Excavated soil/Wheelabrator waste around Building 90-2. Approximately 50-60 CY of material were excavated from both AOC-67 and AOC-68. Additional waste characterization and confirmation samples collected. |
Parsons |
DO11 |
2008
|
April |
Investigation and confirmation samples collected at four locations. |
Parsons |
DO11 |
November |
Excavation/removal and confirmation/site delineation sampling conducted at two locations. Approximately 15 CY of material removed and hauled off-post. |
Parsons |
DO11 |
|
2010
|
May |
Release Investigation Report submitted to TCEQ. |
Parsons |
DO11 |
September |
Closure of AOC-67 and AOC-68 approved by TCEQ. |
TCEQ |
NA |