Year

Month

Action/Results

Action Performed By

Project Number

Unknown

Unknown

Sand and projectiles from building 90 test range used as pipe bedding. SWMU consists of bedding material only.

CSSA

NA

1996

February

Work Plan for B-31 investigation submitted.

Parsons ES

RL17

March

EM geophysical survey performed on March 11; three anomalies found, all corresponding to non-waste management activities.

Parsons ES

RL17

Collected three surface soil samples (SS1-SS3) on March 12 and analyzed for explosives and metals. Analytical results are currently in question due to ITS Laboratory practices.

Parsons ES
ITS

RL17

August

Completed three soil borings (SB1-SB3) on August 29 and 30 at the site. Analytical results are currently in question due to ITS Laboratory practices.

Parsons ES
CoreTerra
ITS

RL17

1997

July

Investigation activities were conducted. The pipe was diverted, and seven test pits were dug along the line to identify lead and shot contamination. No shot or other evidence of waste material was found. Seven confirmatory soil samples were collected (one from each test pit). Results are currently in question due to ITS Laboratory practices.

Parsons ES
UXB
ITS

RL33

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

Advanced 3 soil borings (SB1-3) for Rework and collected 6 soil/rock samples for VOCs, metals and explosives.

Parsons ES
APPL, Inc.
O’Brien & Gere
Data Chem

Rework

2002

August

Final RCRA Facility Investigation/Closure Report submitted.

Parsons

RL17

November

Closure approved by TCEQ.

TCEQ