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Road to Lowell Avenue. A detailed description of each proposed improvement is <br />provided below. <br />Pavement Reclamation & Street Work <br />The process that is proposed for pavement rehabilitation is Full Depth Reclamation <br />(FDR). The process involves grinding the existing bituminous pavement along with the <br />underlying aggregate to a depth of 6 inches from the surface. It is anticipated that there <br />is 3 to 4 inches of bituminous pavement currently in place. The FDR process generates <br />an aggregate base that can be graded, shaped and compacted. On top of this <br />aggregate base, the bituminous base and wear courses can be paved. The process of <br />FDR recycles the existing pavement into a usable product which eliminates the need to <br />haul out all of the old bituminous pavement and haul in any new aggregate base. A <br />portion of the reclaimed material does need to be removed from the site to allow for <br />placement of the bituminous pavements. The material removed from the site can be <br />utilized by the public works department as aggregate for shouldering or gravel road <br />maintenance. <br />The existing concrete curb and gutter can remain in place in conjunction with the FDR <br />process. As a result of leaving the curb in place there is no dimensional, elevation, or <br />width changes to the street. The bituminous pavement section proposed includes 2 <br />inches of bituminous base course and 2 inches of bituminous wearing course. The <br />proposed street section is shown in Exhibit 5. <br />The existing concrete curb and sidewalks are in relatively good condition and only <br />minimal replacement will be necessary. There are several locations where concrete <br />aprons have been installed but are not being used for street access. These concrete <br />aprons will be removed as a part of the project and adjacent sidewalk will likely be <br />replaced. The proposed street and sidewalk improvement locations are shown in <br />Exhibit 6. <br />Many of the existing pedestrian curb ramps do not meet current Americans with <br />Disabilities Act (ADA) Standards and have the exposed aggregate surfacing, curb tapers <br />that are too short, ramps that are too steep, and do not have the proper landing area. A <br />"draft policy on pedestrian curb ramp improvements" for pavement rehabilitation projects <br />is included in Appendix C. Pedestrian curb ramps that currently meet the requirements <br />for surfacing (truncated domes) at the intersections of Upland Avenue (2), and Tipton <br />Avenue (2) will not be replaced as a part of this project. Intersections where curb ramps <br />are intended to be replaced to meet current ADA Standards include Orono Road (2), <br />Tipton Avenue (1), Rush Avenue (2), Proctor Avenue (2), Norfolk Avenue (3), and <br />Morton Avenue (4) for a total of 14. Upgrades at two locations, Norfolk and Proctor <br />Avenues, have been deferred in accordance with the draft policy due to the presence of <br />retaining walls adjacent to the sidewalks. The retaining walls will be significantly <br />impacted with a full pedestrian curb ramp replacement and therefore, only curb tapers <br />and truncated domes will be modified and/or added. The locations can be seen on <br />Exhibit 6. <br />Mr. Troy Adams of Elk River Municipal Utilities has reviewed the existing street light <br />configurations and does not anticipate that any street light modifications or installations <br />will be made. <br />4 <br />