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Solid Waste Management Unit B-25
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. No other documentation regarding this area was found. | CSSA | NA |
| 1996 | February | Work Plan for B-25 investigation submitted. | Parsons ES | RL17 |
| March | EM geophysical survey performed on March 5; one geophysical anomaly found, potentially associated with waste management activities. | Parsons ES ITS | RL17 | |
| Collected 3 surface soil samples (SS1-3), analyzed for VOCs, SVOCs, and metals. Analytical results are currently in question due to ITS Laboratory practices. | Parsons ES ITS | RL17 | ||
| September | Completed 3 soil borings (SB1-3) on September 3, 4, and 5, and sampled for VOCs, SVOCs and metals. Analytical results are currently in question due to ITS Laboratory practices. | Parsons ES CoreTerra ITS | RL17 | |
| 1999 | April | EPA memorandum indicated analytical results obtained from ITS are not usable. | EPA | NA |
| November | Submitted work plan for resampling to replace analytical chemistry data generated by ITS Laboratory. | Parsons ES | NA | |
| 2000 | March | Collected 3 surface soil samples (SS1-3) for Rework, analyzed for VOCs, SVOCs, and metals. Advanced 3 soil borings (SB1-3) for Rework and collected 7 soil/rock samples for VOCs, SVOCs and metals. | Parsons ES APPL, Inc. O’Brien & Gere | Rework |
| 2002 | July | Final RCRA Facility Investigation Report submitted. | Parsons | RL17 |
| 2003 | December | Final TO 0019 Work Plan Addendum submitted. | Parsons | TO19 |
| 2004 | January - October | Excavated approximately 200 cu. yds., no debris found. Closure samples collected. | Parsons | TO19 |
| 2005 | April | Final SWMU B-25 RCRA Facility Investigation Closure Report submitted. | Parsons | TO19 |
| July | TCEQ | NA |