Overview
Horner & Shifrin, Inc. designed bank stabilization improvements along a 1,000′ reach of the Meramec River within Emmenegger Nature Park for the City of Kirkwood, Missouri. This purpose of this project was to arrest active erosion and protect park property.
As part of Horner & Shifrin’s design, the contractor utilized shot rock and concrete rubble material from an I-44 Highway project located near site. As part of the Missouri Department of Natural Resources (MDNR) Clean Water Act 401 Permit, all disturbed soil on the project site was removed and properly disposed of due to slightly elevated levels of lead found on-site. Coordination with the City’s Removal Action Work Plan (RAWP) was completed to ensure all proper regulations were followed. A flood study and No-Rise analysis from the City of Sunset Hills was completed for construction approval. Following approval, H&S performed construction observation during the installment of the bank stabilization improvements using visual monitoring and drone footage.
H&S performed topographic survey for a portion of the park. Staff located the eroding Meramec River bank and a tributary, as well as adjacent park roads, shelters, utilities, and sufficient ground elevations to produce a 1′ contour interval survey utilized as a base for Bank Stabilization plans.
Coordination was required with the United States Army Corps of Engineers (USACE), Missouri Department of Natural Resources (MDNR), Metropolitan Sewer District (MSD), and local utility companies.
