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REQUEST FOR COUNCIL ACTION Date: October 12, 2020 Item No.: 9.g Department Approval City Manager Approval rd Item Description: Twin Lakes 3 Addition Public Improvement Contract Amendment Approval 1 D ISCUSSION 2 On July 13, 2020, the City Council approved a Public Improvement Contract for Twin Lakes Station rd 3 3Addition. The following public improvements were part of that contract: 4 Installation of a new traffic signal at County Road C & Herschel Street 5 Installation of two westbound right turn lanes for westbound County Road C 6 Relocation of City-owned street lights 7 Restoration and landscaping including tree replacement 8 Since the contract was approved, the City has been working with Rice Creek Watershed District 9 (“RCWD”) on the Ramsey County Ditch 4 (“RCD 4”) project to finalize plans to convert the ditch to 10 a storm sewer pipe. The design has been refined and 40,000 cubic yards of fill will be needed to 11 backfill over the pipe. 12 The City has also been working with the developers of the Twin Lakes Station site and their 13 contractor to coordinate their construction with the ditch improvement project design and 14 construction. The developer’s contractor has excess material that needs to be hauled away off site 15 which the City could use for the RCD 4 project. 16 The City worked with the developer to temporarily stockpile material on the Twin Lakes Station site 17 for the future RCD 4 project. Material would be stockpiled this fall. The City would utilize the 18 stockpile in the spring when the RCD 4 project started construction. The RCD 4 ditch project and 19 the associated Twin Lakes Trail project are scheduled to be bid in January 2021 with construction 20 starting in April 2021. 21 Staff has worked with the developer to add an amendment to the existing public improvement 22 contract to install some additional provisions related to stockpiling material on the site. The key 23 items to the amended public improvement contract is summarized below: 24 The Developer’s contractor will stock pile 40,000 CY of clean fill material on Outlot A. 25 The City will pay the Developer’s contractor directly for cost of stockpiling the material. 26 o The City and the Developer’s contractor will survey the site before and after the 27 stockpile is made to confirm quantities. 28 o The Developer’s contractor will stabilize the stockpile at their costs. Once the 29 stockpile is stabilized, the City will take over ownership and maintenance of the 30 stockpile. 31 The stockpile that will be stored on Outlot A will be the responsibility of the City to remove 32 by August 1, 2021. All costs to remove the stock pile and restore the area of the stockpile 33 will be paid by the City. Page 1 of 2