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[SWMU B-23A ]
SWMU B-23A
Chronology of Actions/Investigations
|
Year |
Month |
Action/Results |
Action Performed By |
Project Number |
|
Unknown |
Unknown |
Area where a trench was observed in a 1966 aerial photograph. |
CSSA |
NA |
|
1993 |
September |
Field survey indicated a trench filled in with soil and glass ampoules filled with different colored liquids. |
Parsons ES |
Order 71 |
|
1995 |
March |
EM geophysical survey performed; two geophysical anomalies found at B-23A that are potentially associated with past waste management activities. |
Parsons ES |
Order 67 |
|
1996 |
February |
Work Plan for B-23A investigation submitted. |
Parsons ES |
RL17 |
|
August |
Soil gas survey performed; toluene detected in one sample, no other VOCs were detected. |
Parsons ES |
RL17 |
|
|
2000 |
May |
Work Plan Addendum for B-23A Investigation submitted. |
Parsons |
RL83 |
|
2001 |
September |
Five ampoules collected from filled-in trench surface and submitted for analyses in order to determine chemicals of potential concern. |
CSSA USEPA Region 6 Lab |
RL83 |
|
2003 |
January |
Three surface soil samples (CS-B23A-1 through CS-B-23A-3) were collected and submitted for analyses for VOCs, SVOCs, and metals. An orange and yellow ampoule were collected and sampled for SVOCs and VOCs, respectively. |
Parsons Appl, Inc. |
RL83 |
|
July |
Final RCRA Facility Investigation submitted. |
Parsons |
RL17 RL83 |
|
|
December |
Final TO 0019 Work Plan Addendum submitted. |
Parsons |
TO19 |
|
|
2004 |
January - May |
Excavated soil from site. No debris found. Collected closure and waste characterization samples. Hauled excavated soil to Covel Gardens. |
Parsons |
TO19 |
|
September |
Final RCRA Facility Investigation/Closure Report submitted |
Parsons |
TO19 |
|
|
2005 |
March |
TCEQ |
NA |