... the increasingly serious situation of acid rain andSO2, the law institutes “two zones,” the acid rain control- ling zone and the SO2controlling zone. These two zonesare established in the ... the tradingparameters, including monitoring and enforcement. Pollu-tion sources included in the two -phase program benefit from the freedom of finding the pollution reductionmethod that is the ... aphased -in approach for implementing an emissions tradingprogram, the role of the government should also change dur-ing the different phases of the trading scheme. Perhaps in the early phases,...