Unknown

Unknown

Trench-type anomaly observed on 1966 aerial photograph. Located west Test Pad in the East Pasture.

CSSA

NA

2006

January

EM-61 Geophysical survey.

Four composite samples were collected from 4 test trenches dug on the existing mounds at the north-west side of the site. Each trench was about 5 feet long and 3-5 feet deep. Samples were analyzed for 9 CSSA metals, SVOCs, and VOCs as screening data. Excavated material was placed back into the dug trenches.

Parsons

TO179

2010

December

Completed XRF survey of 30 locations.

Parsons

NA

2011

January

Collected surface soil samples

Parsons

NA

March - April

Excavated site, collected confirmation samples

Parsons

NA

August

Release Investigation Report submitted to TCEQ

Parsons

NA

October

Closure approved by TCEQ.

TCEQ

NA