Agenda - Public Works Committee - 10/18/2022

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Public Works Committee 5. 1. Meeting Date: 10/18/2022 By: Bruce Westby, Engineering/Public Works Title: Review Proposals and Provide Direction on Argon Street Drainage Improvements Purpose/Background: Purpose: To review the proposals received for the proposed drainage improvements to 15410 Argon Street to prevent stormwater runoff from entering the home during spring thaws and heavy rain events, and provide direction to Staff to accept the proposals and authorize execution of the lowest cost proposal from Dave Perkins Contracting, to reject all proposals and direct Staff to request new proposals next Spring after revising the plans and RFP to lower construction costs and increase the project completion schedule to 2 months, or to reject all proposals and direct City staff to remove the sand bags installed by staff if the property owner no longer wants the sand bags on their property. Background: Halland Acres was platted in 1972. A copy of this plat is attached for reference. Over the years, Staff have been contacted by several property owners in this subdivision regarding various drainage concerns. In general, stormwater runoff from City right-of-way's flow through various areas of several properties along Argon Street and Barium Street between Alpine Drive and 154th Lane with none of these areas being encumbered by drainage and utility (D&U) easements. The current property owner of 15410 Argon Street, Dan Ridgeway, contacted Staff this Spring and stated that the previous homeowner replaced the septic system shortly before Mr. Ridgeway purchased the home in the Spring of 2017. Staff researched this and found that the septic system was replaced in 2012 and an inspection was performed in 2016, which found that the system was compliant and was in good operating condition. On October 3, 2016, Public Works Staff met with the previous property owner to discuss his stormwater runoff concerns. That property owner told Staff that stormwater runoff leaves the drainage easement along his rear property line and flows toward his walkout entry. Public Works Staff completed some minor grading work on this property in the Spring of 2017 to lower the elevation of the yard in two spots in an attempt to prevent water from backing up towards the house. See attached letter. Grading of course could not be completed over the drain field. On March 14, 2019, Public Works Staff removed snow from Mr. Ridgeway's back yard after he called to say he pumped about 200 gallons from his basement and asked if someone could come out to remove snow from his backyard to help alleviate his drainage issue. He informed Staff that the City secured a drainage easement in his back yard a couple of years ago, which Staff could not verify, and that water was overflowing the easement area and entering his home through his walkout entry door. On March 18, 2022, Public Works Superintendent Grant Riemer visited the property after Mr. Ridgeway called to say water was entering his walkout entry door again. After this occurred, Mr. Ridgeway asked City Staff to complete a drainage improvement project to prevent water from entering his home again. In April of 2022, Engineering Staff surveyed this property, as well as the Argon Street right-of-way including drainage ditches and a culvert that crosses under Argon Street and directs all stormwater runoff east of Argon Street to the west side of Argon Street towards Mr. Ridgeway's property. On May 11, 2022, Public Works Staff delivered and placed sand bags outside the walkout entry door to Mr.