A total of 1,134 chemical containers have been inventoried at the Site, most of which had intact labels believed to accurately reflect their contents. Of these 1,134 containers, 276 had handwritten, indecipherable or missing labels. The contents of these containers were field screened and assigned hazard groups based on their properties. Virtually all of the surfaces in the lab, including the chemical containers, have elevated counts of radiation as measured with the Ludlum 2241 Meter equipped with a 44-9 "pancake" probe. Additionally, several radiation source materials were identified and segregated at the Site. Liquid scintillation testing of the contents of containers confirmed a number of the chemicals have radioactive contamination mixed in with them. 

Air monitoring results did not detect significant concentrations of volatile organic compounds as measured with a photoionization detector. Additionally, the oxygen concentrations were found to remain constant at 20.9% and the percent of the lower explosive limit was zero. There were no significant detections of airborne radiation contamination in samples collected onto air filters counted by the Ludlum Model 3030 Drawer Alpha-Beta Counter. 

Once the hazardous wastes located at the site were characterized for chemical and radiological content, appropriate facilities were chosen and wastes were transported off-site for disposal.   Four shipments of waste were removed from the site over the course of the response action.  In total, roughly 741 pounds of hazardous waste were shipped off-site for disposal.  An additional 614 pounds of low-level radioactively contaminated investigational wastes were transported off-site for disposal. 

The final waste shipment occurred on March 6, 2015.  On March 9, 2015, a final site walk-through was conducted with representatives of the Kansas Department of Health and Environment (KDHE) and the Lenexa, Kansas Fire Department.  The building was secured and keys to access the facility were returned to KDHE.  No further response actions are planned for the site at this time.

2.1.2 Response Actions to Date

Actions conducted during the period of October 17, 2014-March 6, 2015:

• 36 drum liner bags of investigation-derived wastes were sampled and characterized for disposal
• A 24-cubic-yard roll-off box of investigation-derived wastes contaminated with carbon-14 were transported from the site for disposal at US Ecology in Grandview, Idaho.

PRPs have been identified for the Site, including the operator of the facility and the owners of the building.

2.1.4 Progress Metrics

The waste streams for the Site are listed below.