Agenda - Council - 10/25/2022 - Laserfiche WebLink

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drainage ditches and a culvert that crosses under Argon Street, directing stormwater runoff from the east side of Argon Street to the west side and through the property at 15410 Argon Street. On May 11, 2022, Public Works Staff placed sand bags outside the walkout entry door in response to the property owners concerns with a large rain event forecast for that evening. To date, these sand bags have remained in place and have prevented stormwater runoff from entering the home during several heavy rain events. On June 21, 2022, the Public Works Committee considered an improvement project as designed by City Staff to collect stormwater runoff from Argon Street using storm sewer pipe, manholes and ditch inlets, with the storm sewer being directed to the existing stormwater pond south of Alpine Drive between Argon and Barium Streets. Though this design would have prevented stormwater runoff from Argon Street from being conveyed though private properties, the estimated project cost was $500,000 so the Committee directed Staff to explore more cost-effective options. Meeting minutes are attached. On July 19, 2022, the property owners of 15410 Argon Street addressed the Public Works Committee. Based on discussions from that meeting, Staff enlisted Bolton & Menk to collect topographic survey data across several properties along Argon Street and Barium Street for the purpose of designing and preparing plans for a drainage improvement project contained to 15410 Argon Street, and to ensure that performing the required grading on this property would not adversely impact properties downstream. Meeting minutes are attached. On August 22, 2022, the Public Works Committee received an update from Staff on the status of the design and plans, and the Committee directed Staff to finalize the plans and obtain quotes, and if the low quote did not exceed $10,000 Staff was directed to take the low quote directly to City Council for approval. Meeting minutes are attached. In late August, Staff received the survey data from Bolton & Menk and used it to finalize plans and confirm that the proposed grading on 15410 Argon Street would not have an adverse impact on properties downstream. Staff prepared the attached Request for Proposal (RFP) and submitted it to 5 contractors. Proposals were requested by 10 AM, October 5, 2022. Three proposals were received in the not -to -exceed lump sum amounts shown below. Contractor Dave Perkins Contracting, Inc. One Call Contracting, Inc. Kuechle Underground, Inc. !$16,760.00 $16,987.00 Lump Sum Not -to -Exceed Proposal Amount 1 $45,000.00 All three proposals exceeded the not -to -exceed amount of $10,000 as directed by the Public Works Committee so in lieu of presenting the proposals to City Council for action on October 11, 2022, Staff requested additional direction from the Public Works Committee on October 18, 2022. The Public Works Committee asked Staff what the estimated low quote might be if the City were to request new quotes next Spring allowing for a longer project completion schedule and design modifications aimed at reducing costs by replacing the concrete drainage structure with a smaller plastic structure or another type of structure. Staff responded that based on the quotes received, as well as current and forecast material prices, project costs could potentially come in between $12,000 and $14,000. Following this discussion, the Public Works Committee passed a motion to recommend that the City Council accept the three proposals and authorize execution of the proposal of Dave Perkins Contracting, Inc. in the amount of $16,760 for construction of the Argon Street Drainage Improvements. Notification: Notifications are not required for this case. Observations/Alternatives: