R2023-99 Resolution Authorizing Supplement #2 to the Professional Engineering Services Agreement with AECOM for Design Services for the Brush College Road Grade Separation over Faries Parkway and the Norfolk Southern Railroad

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Exhibit A- Supplement 2 Drainage Desip-n Design ditch along the ICRR maintenance road to be reconstructed. Ditch design will be revised along the ICRR maintenance road to accommodate the proposed Ameren l OD pole. Roadway Lighting Design The lighting design along the Jug Handle Connector roadway will be revised to accommodate the proposed Ameren electrical line. Utility Coordination Underground Utility Locate Survey The original contract scope for survey work only includes aboveground utilities and access points for underground utilities(e.g., manholes,hndholes). Underground utility atlases and drawings were to be provided by the underground utility owners for the project team to draw them into cad. However, some utility owners did not have accurate location information on their underground utilities for the team to identify conflicts and needed relocations. During final design,these utilities will supply field technicians who could locate their underground facilities and asked for the City of Decatur to provide survey crews to record the field location of the underground utility. To obtain this information needed for the project,the AECOM Team will record the utility locations in the field with the utility technician. The project team will complete field survey work for utilities due to these utilities being unable to provide accurate location information about their infrastructures. The additional field survey work will be completed for the following items/entities: I) ADM Fiber Optic at the ADM Spiral Plant—underground fiber optics line 2) Metro Communications—underground communications lines 3) Sanitary District of Decatur—one of the sanitary sewer lines on the east leg of the intersection was identified as a water main when the original survey was completed and manholes for water lines were not opened during the original survey. Through further coordination, it was discovered to be a sanitary sewer line.The AECOM Team resurveyed the manholes and opened them in order to record the location of connecting pipes,measure down,and connecting pipe size. 4) Windstream Communications—underground communications lines Coordination with Ameren 1) Support coordination with Ameren of proposed pole locations conflict with the AT&T proposed relocation along Brush College Road 2) Additional information on the location of the Ameren gas line along Faries Parkway was received after the preparation of the January 2021 PS&E. The storm sewer will be re-designed to reflect this information along with additional coordination of the proposed and existing storm sewer along Faries Parkway once Ameren was able to provide additional detail on their pole relocation plan. 3) Coordination with NSRR a. The AECOM Team will submit four(4) initial railroad permit application fees to the NSRR. The original scope assumed three permits would be required; however, the NSRR determined that a fourth permit would be required. The NSRR requires the use of a new online permit submittal system,which was not available at the time of the original scoping. The NSRR coordination also results in revisions to the design of the jacking and boring pits 2 Supplement 2 05/09/2023