Unknown

Unknown

Trench observed on 1973 aerial photograph. Located west of monitoring well MW-2.

CSSA

NA

1999

July-August

EM and GPR geophysical surveys completed at AOC 58.

Parsons ES

RL83

2000

January

Collected 3 surface soil samples (SS1-3) and analyzed for VOCs, SVOCs and metals.

Parsons ES
APPL, Inc.

RL83

2002

October

Final RCRA Facility Investigation Report submitted and conducted test trenches.

Parsons

RL83

2011

April

Excavated site and collected confirmation samples.

Parsons

NA

August

Release Investigation Report submitted to TCEQ

Parsons

NA

December

Closure approved by TCEQ.

TCEQ

NA