The emergency coordinator has decided that the appropriate emergency response to the immediate release of a toxic material is to alert people to stay in their homes, with doors and windows closed, until the cloud has passed. The coordinator has also indicated that homes \(4000 \mathrm{~m}\) downwind must not be exposed to concentrations exceeding \(0.10 \mathrm{mg} / \mathrm{m}^{3}\) of this material for any longer than \(2 \mathrm{~min}\). Estimate the maximum instantaneous release of material (in \(\mathrm{kg}\) ) allowed for these specifications. Be sure to clearly state any assumptions about weather conditions, wind speed, and other conditions.