May the operators of the federal office building be prosecuted successfully by West Dakota authorities for violating that state's pollutioncontrol standards?
No, because the operations of the federal government are immune from state regulation in the absence of federal consent. 
No, because the violations of the state pollution-control standards involved here are so deminimized that they are beyond the legitimate reach of state law.
Yes, because the regulation of pollution is a legitimate state police power concern. 
Yes, because the regulation of pollution is a joint concern of the federal government and the state and, therefore, both of them may regulate conduct causing pollution. 