Fee would vary from state to state. It further dealt with the aspect that NHAI itself was of the opinion that the additional impact as a result of subsequent legislation was admissible separately, as signified by the letter dated 03.09.2003 to the Economic Advisor. In the backdrop of the law laid down by this court, the construction of the terms of the contract by the Arbitral Tribunal is completely Civil Appeal no.4702 of 2023 etc. Page 12 of 15consistent with the principles laid down by this court. Upon construing the terms and the material on record it concluded that the instant matter would be covered by substantive part of Sub-Clause 70.8 of COPA. It also noted that NHAI itself was of such opinion. The view so taken by the Arbitral Tribunal after considering the material on record and the terms of the contract is certainly a possible view, to say the least. We do not see any reason to interfere. The Division Bench in our considered view, was completely right and justified in