Sources indicated that an umbrella environment law may be on the anvil which will subsume existing legislations and set up Central and State level environmental management authorities. A draft green law, based on the key recommendations of the TSR Subramanian committee, has also been circulated among the States. According to the sources, the proposed law will revise application process for environmental clearance through a single window. The linear projects/ strategic border projects, besides mining and power, are likely to receive special treatment.