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Solid Waste Management Unit B-33
Chronology of Actions/Investigations
|
Year |
Month |
Action/Results |
Action Performed By |
Project Number |
|
Unknown |
Unknown |
Sand and projectiles from the Building 90 test range used as pipe bedding. SWMU consists of bedding material only. |
CSSA |
NA |
|
1996 |
February |
Work Plan for B-33 Investigation submitted. |
Parsons ES |
RL17 |
|
March |
EM geophysical survey performed on March 6. Four anomalies found all corresponding to non-waste management activities. |
Parsons ES |
RL17 |
|
|
Collected three surface soil samples (SS1-SS3) on March 8 and analyzed for explosives and metals. Analytical results are currently in question due to ITS Laboratory practices. |
Parsons ES ITS |
RL17 |
||
|
1997 |
May |
Completed three soil borings (SB1-SB3) on May 14 at the site. Analytical results are currently in question due to ITS Laboratory practices. |
Parsons ES ITS |
RL17 |
|
July |
Sand and shot investigation activities commenced and completed. The pipe was diverted, and shot and lead-contaminated sand was excavated and stockpiled. Approximately 100 cubic yards of soils were excavated. The trench was backfilled with clean sand. Four confirmatory soil samples were collected. Results are currently in question due to ITS Laboratory practices. |
Parsons ES ITS UXB |
RL33 |
|
|
1998 |
September |
Submitted Waste Analysis Plan for disposal of trench material to TNRCC. |
Parsons ES |
RL33 |
|
1999 |
April |
EPA memorandum indicated analytical results obtained from ITS are not usable for closure or compliance. |
EPA |
NA |
|
May |
Approximately 100 cubic yards of soil were successfully treated by solidification with Portland cement; to non-hazardous Class 2 levels. Soils were transported and disposed in accordance to applicable regulations. |
Parsons ES Eagle Const. WMI-Covel Gardens |
RL33 |
|
|
November |
Submitted work plan for resampling to replace analytical chemistry data generated by ITS Laboratory. |
Parsons ES |
NA |
|
|
2000 |
March |
Advanced 3 soil borings (SB1-3) for Rework and collected 6 soil/rock samples for metals and explosives analysis. |
Parsons ES O’Brien & Gere Data Chem |
Rework |
|
2002 |
August |
Parsons |
RL17 |
|
|
2003 |
December |
Final TO 0019 Work Plan Addendum submitted. |
Parsons |
TO19 |
|
2004 |
March |
Removed sand that was used as bedding material for utility lines. Collected 5 samples from excavated area and analyzed for metals (Ba, Ni, Cd, Cr, Zn, and Pb). Collected 1 waste characterization sample. |
Parsons |
TO19 |
|
May |
Mixed excavated soils with PIMS. |
Parsons |
TO19 |
|
|
August |
CSSA |
TO19 |
||
|
November |
TCEQ |
NA |