Agenda - Council - 07/25/2023 - Laserfiche WebLink

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Mr. Bruce Westby July 18, 2023 Page 2 provide QA/QC support along with continuity in the technical design aspects from the original plans. Dave will be supported by various engineers and technicians to provide production support on the revised bid documents. This proposal is based on conversations with City staff about the specific modifications needs to the original plan set. PROJECT UNDERSTANDING FOR REBID DESIGN MODIFICATIONS Based on discussions with the City of Ramsey staff, the following modifications are proposed to the 2021 plans for the 2023 rebid documents: 1. Adding an underground meter vault near well #8 on the existing main in the park, including associated instrumentation for operation ease. 2. A new water main between Bunker Lake Blvd and 147th Terrance NW to complete the loop. The water main is anticipated to be installed on City owned property where Well No. 3 is located. Also, a new 1-inch service line would be installed off this line to the existing well house for priming the Well No. 3 pumps. 3. Redesign the water main in Town Center Drive south of Bunker Lake Blvd and remove the water main in the open space easement to open this parcel up for future development. 4. Install a new 1-inch service line off Town Center Drive to wellhouse at Well No. 5 for pump priming purposes. 5. Modify the plans for the 24-inch raw water line on the trail north of Sunwood Dr. NW to utilize open cut installation rather than HDD, with the exception of under Sunwood Dr, which will still be HDD to avoid impact to the street. 6. Include trenchless installation of the water main crossing Bunker Lake Blvd at 143rd Ave NW to avoid impacts to the recent County Road improvements. 7. The trunk water line on 143rd Ave NW will now be fully installed via open cut trench installation followed up with full depth bituminous pavement replacement due to the age and condition of the existing pavement. Due to construction traffic using this route for the WTP construction and maintaining access to adjacent commercial properties, phased pavement removal is anticipated to maintain a hard driving surface to the greatest extent possible. 8. Coordinate any intersection work, such as grades and geometrics, with 143rd Ave NW and Ramsey Blvd NW with the design of the Highway 10 project schedule for 2025 construction. Please refer to Attachment 1 for an illustration of the proposed plan revisions. This full design must incorporate AWWA standards, CEAM design standards and City of Ramsey standards. PROJECT APPROACH Task 1 Design Modifications: Topographic Survey Additional survey will be performed in the project area to establish the existing conditions in the field for the additional water main segments added to the rebid project. We will also gather any updated as -built information, City standards and associated adjacent project plans, such as the County's Highway 10 project.