The Prikamskoe TA of the Ministry of Ecology and Natural Resources received a complaint from residents of Naberezhnye Chelny. They reported that unknown violators were draining an incomprehensible liquid with a sharp chemical smell from a KamAZ truck in the Zamelekesye microdistrict. The inspectors initiated an administrative investigation, within the framework of which a field visit was carried out. The fact of the drain was confirmed. With the help of a mobile environmental laboratory, samples of atmospheric air and polluted snow were taken. The inspectors recorded the spill area and sent a request to the traffic police to determine the owner of the truck.