All notices, requests or other communications provided for in this Agreement shall be made, if to the Corporation, to Great Lakes Dredge & Dock Corporation, Attn: Chief Legal Officer, 2122 York Road, Oak Brook, IL 60523, and if to the Holder, to the last known mailing address of the Holder contained in the records of the Corporation.  All notices, requests or other communications provided for in this Agreement shall be made in writing either (a) by personal delivery, (b) by facsimile or electronic mail with confirmation of receipt, (c) by mailing in the United States mails or (d) by express courier service.  The notice, request or other communication shall be deemed to be received upon personal delivery, upon confirmation of receipt of facsimile or electronic mail transmission or upon receipt by the party entitled thereto if by United States mail or express courier service; provided , however , that if a notice, request or other communication sent to the Corporation is not received during regular business hours, it shall be deemed to be received on the next succeeding business day of the Corporation.