On Wednesday, 2 November, the OPCW inspectors separate into three sub-teams to undertake parallel activities at different locations of the chemical plant site.
The day before, inspectors conducting exit monitoring at the main gate offloaded a drum with unidentified chemicals from a flatbed truck that was leaving the plant site. The drum was set aside for examination, and Calid paper applied to the lid indicated the possible presence of chemical agent. So on Wednesday morning, a sub-team comprised of OPCW specialists in sampling and analysis collect wipe samples from the drum for analysis at the on-site OPCW laboratory.
Acting on additional information provided by the Requestng State Party observer (RSO), another sub-team returns to the laboratory that was visited the day before to conduct a more thorough sweep of the equipment, instruments, shelves, cabinets and documents. In a drawer of the laboratory, a black unmarked notebook is found that contains copious handwritten notations in Thai script and diagrams of chemical formulas. The location is carefully photographed and the drawer sealed.
In the presence of the Thai escort team leader and RSO, laboratory staff members are questioned about the origin of the notebook. Who kept it and recorded the notations? How did it come to be in the drawer? Were they aware of its presence? The discovery is communicated to the OPCW on-site command post for further instructions.
A third sub-team meanwhile returns to the phosgene plant to continue physical inspection and collect potentially relevant documents as part of the fact-finding to support the Requesting State Party’s allegations. Afterward they visit a warehouse in the plant that stores equipment and spare parts.
While these activities are underway, inspectors continue to perform exit monitoring at the main gate to screen vehicles leaving the plant site and their cargo manifests. For the first time in an OPCW Challenge Inspection exercise, the CI inspection team for this exercise is conducting 24-hour exit and perimeter monitoring to mimic actual conditions.
At the end of the afternoon, the inspection team leader meets with his sub-team leaders to review activities and findings during the day, what corrective actions to take, and the next days’ plan.