An apparatus generates a checksum for a payload having a number of payload symbols. The method receives points from the laser rangefinder, where the points represent locations in space where the rangefinder senses that some object exists. The lid further includes a solder layer atop another portion of the reflective layer over the bond area, and a barrier layer atop the mirror. The system also includes a separation system that includes a membrane with differential permeability for the reductant component relative to the primary component. A plurality of nozzles may be disposed proximate the end of the moldboard which may also be in communication with a fluid reservoir through a fluid pathway. The measuring equipment includes capacitor equipment with a known capacitance for connection between the high-voltage conductor and ground potential.