Allowance for Concrete Sidewalk Repair under the City’s Expedited/45 Day Repair Premium Plan 1. Description. Under this item, a premium will be paid to the Contractor as payment for the additional costs of installing concrete sidewalk under the City’s Expedited/45 Day Repair Premium plan. HW-S - Allowance for Concrete Sidewalk of Less Than 100 S.F. per Property 1. Description. Under this item, a premium will be paid to the Contractor as payment for the additional costs of installing concrete sidewalk in areas totaling less than 100 square feet per property (lot and block number), excluding concrete sidewalk in corner quadrants. BD-P - Pavement Key at Pedestrian Ramps (3’ to 6’ Wide) 1.INTENT. This section describes the work of installing pavement keys in order to remove depressed or damaged wearing course, to facilitate storm water runoff (without ponding) and to facilitate installation of new pavement. 2.DESCRIPTION. The construction of pavement keys must consist of cutting, milling, and removing a portion of the existing pavement to the required depth and width, generally next to curb or areas of poor pavement; all in accordance with the specifications and the directions of the Engineer.