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Area of Concern 50
Chronology of Actions/Investigations
|
Year |
Month |
Action/Results |
Action Performed by |
Project Number |
|
1996 |
March |
Nickel penetrate site
located approximately 100 feet from SWMU B-30.
|
Parsons ES |
RL17 |
|
1999 |
December |
Collected 2 surface
samples (SS1-2) and analyzed for TCLP metals. |
Parsons ES
O’Brien & Gere |
DO5068 |
|
2000 |
December |
Conducted EM and GPR surveys. |
Parsons ES |
DO 5068 |
|
2001 |
March |
Excavated nickel penetrate from top of soil surface. Discovered waste trench. |
Parsons ES |
DO 5068 |
|
April |
Finished excavation of nickel penetrate and waste trench. Collected soil samples from bottom of trench. |
Parsons ES |
DO 5068 |
|
|
August |
Collected ten post-excavation soil samples. |
Parsons ES |
DO 5068 |
|
|
2002 |
December |
RCRA Facility Investigation Report submitted to TCEQ. |
Parsons |
DO 5068 |
|
2003 |
December |
Final TO 0019 Work Plan Addendum submitted. |
Parsons |
TO19 |
|
2004 |
January |
Began site excavation. Removed approximately 1 foot of soil from surface of site. Closure and waste characterization samples collected. |
Parsons |
TO19 |
|
February - May |
Excavated areas where closures samples failed. Hauled excavated soil off-post to Covel Gardens. |
Parsons |
TO19 |
|
|
June - July |
Backfilled excavated area. |
Parsons |
TO19 |
|
|
2005
|
February |
Final RFI Closure Report submitted |
Parsons |
TO19 |
|
April |
TCEQ |
NA |