The DART™ AP-MM Spray System is a push button activated, time delayed, asphalt release applicator that mounts to a user-supplied drive-through arch for spraying asphalt truck beds. This system uses a rugged Sandpiper air-operated, double-diaphragm pump to draw chemical concentrate and water from separate static tanks and blend them "on-the-fly" to create an accurately diluted solution. The driver pushes the button to activate the system; a delay timer allows the driver to position the truck under the nozzle before spraying begins and a run timer prevents overuse of the release agent.