R2026-153 Resolution Authorizing a Professional Engineering Services Agreement with Clark Dietz Inc. to Provide Design Engineering Services for the North Summitt Avenue Drainage Improvements, City Project 2026-18

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Council Memo Public Works Department No. 2026-74 DATE: 7/20/2026 TO: Honorable Mayor Julie Moore Wolfe and City Council Members FROM: Melissa Hon, City Manager Matt Newell, Director of Public Works Paul Caswell, City Engineer SUBJECT: Resolution Authorizing a Professional Engineering Services Agreement with Clark Dietz Inc. to Provide Design Engineering Services for the North Summitt Avenue Drainage Improvements, City Project 2026-18 SUMMARY RECOMMENDATION: It is recommended that the City Council approve the attached Resolution authorizing the Mayor to sign and the City Clerk to attest a Resolution approving a professional services agreement with Clark Dietz, Inc. for the design of the North Summit Avenue Drainage Improvements for a fee not to exceed $274,800. BACKGROUND: The North Summit Avenue Drainage Improvement, see attached location map, is identified as the number 2 priority area in the 2024 stormwater fee increase and 2026 budget. The project area has undersized storm sewers and surface drainage that follows the natural drainage path between houses. The area also overlays the Ellen and Division inflow and infiltration project location that is included in the USEPA Administrative Consent Order (ACO)with the City. The ACO requires the City to eliminate sanitary sewer overflows and reduce basement backups. It has long been documented in other City projects that inadequate storm drainage has a large effect on the amount of inflow and infiltration into the sanitary sewer. The project plan is to improve the existing drainage by the installation of new storm sewers and improvement of the existing ditches where possible. The project flows through a private pond owned by 12 properties northwest of the intersection of Harrison and Summit Ave. The pond was built by the subdivision but not built for stormwater detention. The City has received many complaints from property owners bordering the pond seeking assistance in improving the water quality due to eutrophication and sediment. The design will include a review of the plan's effect on the pond. Request for Proposals On January 6, 2026, the City issued a request for proposals and qualifications to provide design services for the drainage improvements of the North Summit area. Proposals were received on February 13, 2026. Eight firms submitted formal statements of qualifications. Public Works Department staff reviewed the proposals and shortlisted three firms to interview. After the interviews, the team recommended Clark Dietz, Inc., of Champaign, IL, as the firm best able to serve the City in performing the requested design services. Engineering Services Agreement The design services are to prepare drawings and specifications for construction and necessary permits. The Agreement will generally include the following services: