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January 20, 2014 <br />Nick DeBar <br />Public Works Director <br />City of Mounds View <br />2401 County Road 10 <br />Mounds View MN 55112-1499 <br />�h,'' rl/fid <br />P.O. Box 897 • 3394 Lake F.Imo Ave. N o Lake ❑mo, NN 55042 <br />(651) 773-5111 e Fax (651) 773-5222 <br />By Email Only <br />RE: Updated Cost Estimate for the Recommended Repairs to the 2,000,000 <br />Gallon Concrete Ground Storage Reservoir in Mounds View, MN <br />KLM Project MN 3146 <br />Mr. DeBar: <br />As requested during the meeting last Thursday regarding the recommended repairs to the <br />2,000,000 gallon concrete GSR, IuM prepared a revised scope of work along with an <br />updated cost estimate. The following cost estimate is based on a Spring 2014 <br />construction schedule and the use of standard zinc and acrylic or polyurea coatings <br />depending on the location. <br />SCOPE OF WORK - 2014 <br />The following scope of work reflects KLM's professional opinion that it is more cost <br />effective to isolate the primary problem areas by resolving the known issues first, then <br />isolating and dealing with potential secondary issues. What is known is that a) water is <br />infiltrating into the reservoir through the roof, and b) some areas of brick work have and <br />are deteriorating. It is NOT known if the reservoir is leaking, and cannot be larown until <br />the reservoir is isolated and a leakage test is performed, which in turn should not be <br />completed until we can be sure no water infiltrates into the reservoir from the roof. <br />Therefore, rehabilitation work should focus on these areas, with other potential <br />rehabilitation work delayed until these are complete. <br />Brick work can be delayed and should be performed separately, as it does not require an <br />empty reservoir to perform this work. <br />Interior Wet Structural <br />Perform the structural modifications as identified in Sections 3.1.2, 3.1.3, and 3.1.4 of <br />KLM's report. In addition to these, perform the following: <br />Remove the interior caulking and backing rod from the vertical and horizontal <br />construction joints on the exterior wall, and replace with Sika -flex la. There are <br />twelve (12) vertical construction joints, one located at each pilaster, and two (2) <br />horizontal construction joints. <br />