Minutes - Public Works Committee - 04/18/2018

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5. COMMITTEE BUSINESS 5.01: Consider Using Soil from COR Infiltration Basin Project as Fill in Other Areas of the COR Civil Engineer IV Linton stated that preparation of plans for the COR Infiltration Basin Improvement was approved by the City Council on April 9, 2018 and noted that the project will generate approximately 35,000 cubic yards of soil that needs to be exported. He reported that The COR was master planned as Ramsey Town Center and the developer completed grading on the sites generally east of Rhinestone Street and north of East Ramsey Parkways before going out of business and walking away from the project. He noted that there have been several analyses of the site to determine the amount of fill required to bring the site to grade and ready for construction. He noted that the general number is 200,000 cubic yards of fill will be required to bring the pads up to grade and ready for building. Civil Engineer IV Linton stated that it would be feasible to issue a contract for the following work on select sites to use the excess fill from the COR Infiltration Basin Improvement Project: 1.Install silt fence. 2.Strip and stockpile the existing topsoil. 3.Spread the fill material in uniform lifts and compact. 4.Have a geotechnical engineer perform compaction tests and document the location and results of the tests. 5.Replace the topsoil. 6.Establish vegetation. Civil Engineer IV Linton stated that the area south of Sunwood Drive and east of Zeolite Street was identified as a potential site for the excess fill and will take approximately 6,000 cubic yards. He stated that bringing the site to grade will address a concern raised by the Minnesota Department of Health about the area around the municipal well being depressed and holding water and will also make the site more marketable. He stated that the remainder of the fill will be placed in another area of the COR that needs fill using the same steps. He identified other site, and the regional pond site. He stated that it would be feasible to add this work to the COR Infiltration Basin Improvement Project and the funding sources for each line item would be provided to finance in advance, so each pay estimate would draw from the correct fund. He recommended amending the plans for the COR Infiltration Basin Improvements, Improvement Project #18-09, to include placing the fill in a controlled and documented manner on selected sites in the COR. Councilmember Kuzma asked if the fill could be sold to Affinity. Civil Engineer IV Linton stated that Affinity will be ready for fill prior to the City having the fill available and therefore that timing would not align. Motion by Councilmember Kuzma, seconded by Councilmember Johns, to recommend that the City Council orders amending the plans for The COR Infiltration Basin Improvements, Public Works Committee / April 18, 2018 Page 2 of 6