Innovations in Site Characterization. Case Study: Dexsil L2000 PCB/Chloride211 Analyzer for Drum Surfaces

摘要

This case study describes how a field analytical method was used to measure PCB211u001esurficial contamination in empty drums that were cleaned by a new process. DOE 211u001eproposed and EPA approved a sampling program to determine the effectiveness of 211u001ethe clean-up technology and evaluate compliance with EPA's regulatory limits for 211u001ereleasing TSCA-regulated items. The proposed sampling program consisted of (1) 211u001estatistical control limits for process monitoring, (2) random sampling of 211u001eprocessed drums, (3) wipe sampling of container surfaces, and (4) rapid analysis 211u001eof the wipe samples by a field method. During the trial period, the clean-up 211u001etechnology vendor attempted to clean about 20 of the most highly contaminated 211u001edrums. Field analyses of residual PCB contamination, which provided results 211u001ewithin one hour of wipe sample collection, showed that the clean-up technology 211u001ewas not working as expected.