23.2 If the Engineer-in-Charge fails to give notice of his decision in writing within a period of thirty days after being requested or if the Contractor is dissatisfied with the notice of the decision of the Engineer-in-Charge, the Contractor may within thirty days after receiving the notice of decision, appeal to the agreement concluding authority who shall offer an opportunity to the contractor to be heard and to offer evidence in support of his appeal, the agreement concluding authority shall give notice of his decision within a period of thirty days after the Contractor has given the said evidence in support of his appeal, subject to arbitration, as hereinafter provided. Such decision of the agreement concluding authority in respect of every matter so referred shall be final and binding upon the Contractor and shall forthwith be given effect to by the Contractor, who shall proceed with the execution of the works with all due diligence whether he requires arbitration as hereinafter provided, or not. If the agreement concluding authority has given written notice of his decision to the Contractor and no claim to arbitration, has been communicated to him by the Contractor within a period of thirty days from receipt of such notice the said decision shall remain final and binding upon the Contractor. If the agreement concluding authority fail to give notice of his decision, as aforesaid within a period of thirty days after being requested, or if the Contractor be dissatisfied with any such decision, then and in any such case the contractor within thirty days after the expiration of the first named period of thirty days as the case may be, require that the matter or matters in dispute be referred to arbitration as detailed below:- SETTLEMENT OF CLAIMS: All disputes or difference arising out of or relating to the Contract shall be referred to the adjudication as follows: a) Settlement of claim amount up to Rs