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further disruption of riverbank habitat, the ends of Parkovash Avenue and/or Iroquois Street may be closed to provide the contractor with temporary work and storage areas. Additionally, the contractor would need to operate equipment on North Shore Drive and likely would close down the south side of the road. Throughout the period of work the contractor is required to maintain an all-weather roadway throu_h or around the work area when work would otherwise block an existing roadway. Traffic impacts would be temporary, comprised generally of congestion and minor inconvenience. 3.12 Cultural Resources: All three bank protection sites were reviewed for the potential to impact cultural resources. The National Register of Historic Places (NRHP) lists include the Samuel Leeper, Jr., House at 113 W. North Shore Drive. This house is on the opposite side of the river from the proposed Leeper Island Park project and therefore would not be affected. Leeper Park Island is surrounded by a 5 -foot -high (minimum) stone wall that was built as part of a Works Progress Administration (WPA) effort in the 1930's. Significant parts of this wall have collapsed and, in its current condition, the wall does not retain integrity as a cultural resource and is not eligible for the NRNP. 3.13 The North Shore and CSO sites both have been disturbed by previous excavation. While the Leeper Park Island construction site has not been significantly disturbed by prior construction, it has been disturbed by erosion. Minimal excavation that may be required at the Leeper Island Park site would not affect undisturbed areas, but would be limited to the previously disturbed wall foundation area. Since undisturbed areas would not be affected, unforeseen buried cultural resources at the three sites would not likely be affected by project construction. As a precaution, contract specifications will designate that, if during construction the contractor observes unusual items that might have historical, archeological, or cultural value, the contractor shall protect those items and immediately report the find to the contracting officer so that the Indiana Department of Natural Resources, Division of Historic Preservation may be notified. 3.14 The above cultural resources review information and project alternatives were coordinated with the Indiana Department of Natural Resources, Division of Historic Preservation and Archaeology. A discussion of their comments is included in paragraphs 4.15 and 4.16 of the following section. 3.15 Future Maintenance and Repair: In-kind, in-place maintenance and repair activities may occur periodically following completion of the riverbank protection projects. The impacts of maintenance would be similar to those expected for the entire project, but of significantly smaller magnitude, since maintenance and repair activities would be of a smaller scale.