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Solid Waste Management Unit B-23
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 two green canisters half buried at one end of the trench. | Parsons ES | Order 71 |
| 1995 | March | EM geophysical survey performed; no geophysical anomalies found at B-23. | Parsons ES | Order 67 |
| 1996 | February | Work Plan for B-23 investigation submitted. | Parsons ES | RL17 |
| August | Soil gas survey performed; no VOCs detected. | Parsons ES | RL17 | |
| 2000 | March | Advanced 3 soil borings (SB1-3) and collected 9 soil/rock samples for VOCs, SVOCs, metals and explosives analysis. | Parsons ES APPL, Inc. Data Chem | RL83 |
| 2002 | June | Final RCRA Facility Investigation Report submitted. | Parsons | NA |
| 2003 | December | Final TO 0019 Work Plan Addendum submitted. | Parsons | TO19 |
| 2004 | January - June | Excavated soil and found a small amount of banding material and approximately 50 JATO canisters. Collected confirmation and waste characterization samples. Hauled excavated soils and JATO canisters to Covel Gardens | Parsons | TO19 |
| 2005 | April | Final SWMU B-23 RCRA Facility Investigation Closure Report submitted. | Parsons | TO19 |
| July | TCEQ | NA |