Follow the property's evidence-retention, owner, tenant, security, insurer, and reporting procedure before changing the marking. Confirm the actual jurisdiction for the parcel and issue any work-hour, barricade, access, finish-approval, or repainting requirements to the contractor before authorization.
Products, pigment, rinse, wipes, and absorbent should be controlled away from people, neighboring surfaces, landscaping, and storm drainage. The proposal should state ventilation, access equipment, handling of generated material, and excluded damage such as etched glass or deeply scratched panels that routine cleaning cannot restore.