The objective of this research was to determine by means of a computational model the degree and area of ​​affectation implied by the release of a toxic ammonia cloud from a 1000 Kg storage tank. The SCRI-Fire simulator of the company Dinámica was used. Heuristics feeding it with meteorological data from the city of Los Mochis, Sinaloa, physicochemical properties of ammonia and characteristics of the tank. The simulation was carried out in the summer and winter scenarios. As results of the simulation, in case of an ammonia leak, at a distance of 1038.67 meters there would be a concentration of 2500 ppm, which could produce the obstruction of the airways in people and at a distance of 818 meters there would be 5,500 ppm of ammonia, which is fatal to people for an exposure time of 30 minutes. Good management of dangerous substances such as ammonia is necessary, to avoid damage to the health of exposed people and negative effects to the environment, constant training of personnel who handle this dangerous substance is required, and that companies that handle ammonia are They are far from residential areas, and places with a lot of people.

The implementation of a circular economy for empty agrochemical containers in areas where agriculture is intensive and the use of agrochemicals is in large quantities, is necessary to reduce the impact on the environment and people's health. Training the primary producers of empty containers and agrochemical companies in the correct management of hazardous waste, as well as promoting the participation of the social and private sectors in activities of recovery and recycling of hazardous waste are some strategies aimed at avoiding the disposal end of empty agrochemical containers in the soil, bodies of water or incineration without controls, seeking in this way the recycling, co-processing or treatment of empty agrochemical containers.

The hazardous waste in Mexico is generated from a wide range of activities, such as automotive workshops, this type of generators produces spent oils, filters, paint packs and different types of solids impregnated with fats, oils and solvents, all these With dangerous characteristics, the mismanagement of hazardous waste leads to environmental and health risks in humans and wildlife, so they require storage, transport and final disposal in a safe manner. A study was carried out in the mechanical workshops of the city of Los Mochis, Sinaloa, with the purpose of analyzing the handling of hazardous waste, especially used oils and solids impregnated with fats and oils. As evaluation instruments, a survey and a checklist were applied based on the specifications indicated in the Mexican environmental legislation on waste. 43% of the workshops do not have a temporary warehouse, 39% are not registered with the authority as generators of hazardous waste, 43% generate more than 100 kg of hazardous waste per month and 19% of these waste are spent oils. It was concluded that not all workshops work under the guidelines of the Mexican environmental legislation on waste, for which reason a more exhaustive vigilance is recommended by the competent authorities in the matter.