Six sweepers and one scrubber, that were manufactured by Tennant, are located in various buildings abourd Marine Corps Base Camp Pendleton, CA. The equipment is used inside warehouses. Scheduled maint... Six sweepers and one scrubber, that were manufactured by Tennant, are located in various buildings abourd Marine Corps Base Camp Pendleton, CA. The equipment is used inside warehouses. Scheduled maintenance is required to reduce prolonged down time and extend the life of the equipment. The sweepers and scrubber have been under continuious service since they were purchased.