People who work there with non-GMOs, on exempt dealings, or on dealings that a PC1 facility could host must also follow Part C, unless (a) procedures keep that work from being cross-contaminated by dealings that need PC2 containment, (b) those procedures are written down, and (c) the primary container and any secondary container used to take an organism out are free of GMO contamination before they leave. Where (a) to (c) are met, dealings suitable for PC1 may follow either Part C or the PC1 certification guidelines. The guideline gives separating the work physically, or by time with any contaminated surfaces decontaminated before moving to a different organism, as examples.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.