Wash-water, chemical, disposal, traffic, and public-access requirements depend on the Spring site and the material being removed. Require a property-specific plan for drains, low points, recovery, storage, and disposal, then confirm applicable requirements with the responsible property program and authority rather than relying on a generic statement.
Verify insurance, chemical documentation, equipment condition, public controls, and protection for landscaping, electrical components, doors, intakes, signs, security devices, and fire-life-safety equipment. Assign responsibility for water access, recovered material, after-hours entry, weather delays, moved items, and reporting damage or unexpected surface failure.
Older masonry joints, patched concrete, and aged coatings can fail under a process that is acceptable on newer surfaces. Include vulnerable areas in the condition survey and test at a conservative setting before broad cleaning.
Busy roadside properties can receive unexpected vehicles, deliveries, or pedestrians. Use visible barriers, an alternate route, hose protection, a spotter when appropriate, and authority to pause production until the zone is secure again.