PSA - DLZ Indiana - Prepare Bid Docs from Emergency Repair of Ireland Road at High St.

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A. Ireland Road — Located along the north side of Ireland Road at the intersection with High Street. This scope of work assumes this project will be submitted to Contractors for quotes in lieu of a public bid. Scope of services to include: 1. The Engineer performed a site visit on August 22, 2016 to observe the erosion caused by the rainfall event and to formulate a plan to repair damage along the north side of Ireland Road. The intersection of Ireland Road and High Street is a low point in the street. In a rainfall event of this magnitude, the storm sewers would have been flowing at capacity and not accepting additional flow from the inlets. This results in a substantial amount of surface water bypassing the inlets and ultimately collecting in this low point. The surface area contributing would extend along Ireland Road from Fellows Street to Miami Street and along the west side of Miami Street from Ireland Road to the parking lot entrance to the golf course. This would also include south High Street and runoff from Erskine Plaza shopping center as well as business along the south side of Ireland Road. At the low point, it appears the surface water overflowed the curb and drained into the golf course. The adjacent embankment for Ireland Road was not protected to withstand a force of that magnitude. This resulted in the erosion the exposed the existing 48" concrete storm sewer and displaced a considerable amount of soil, which ultimately undermined the existing edge of pavement for Ireland Road. The repair plan shall include the following: a. Depending on undermining of the pavement, at a minimum remove the curb and gutter and one lane of pavement, 12 feet wide, along the north side of Ireland Road to a point 10 feet east and west of the undermined edge of pavement. b. Remove the northern three sections of the existing 48" concrete storm sewer pipe, assuming the pipe is not damaged ( to be determined during construction). Grade and re -compact the existing soil and re -set the pipe with a concrete anchor at the outlet end. c. Backfill the void created by the erosion using a combination of flowable fill and soil. Due to the presence of exposed existing traffic signal conduits, flowable fill may be proposed adjacent to the roadway to minimize potential impacts to the conduit. d. Place grouted rip rap to form a protected weir to minimize the chance for erosion due to a future rainfall event. Also, place grouted riprap in the sump for the outlet of the 48" storm sewer outlet pipe. e. Place curb and gutter and pavement along Ireland Road and the existing driveway. Appendix 1, Standard Hourly Rates Schedule EJCDC E-520 Short Form of Agreement Between Owner and Engineer for Professional Services. Copyright @2009 National Society of Professional Engineers for EJCDC. All rights reserved.