Agenda - Public Works Committee - 08/21/2018

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City Engineer Westby stated that staff has been taking pavement cores on completed street reconstruction projects to ensure that sufficient pavement was placed per plan. He stated that it may be more beneficial to use ground penetrating radar (GPR) as that would provide a full picture of the pavement section. He stated that the cost would be slightly higher, but using GPR provides a fuller set of data as readings are taken every foot along the street, and would include the aggregate base thickness. Councilmember Kuzma asked how the current process is working and whether the samples from the cores are providing accurate results. City Engineer Westby confirmed that the pavement cores have matched what they are supposed to be for the newly built roads. Chairperson Riley stated that if the cost is not much more, he would like to use the GPR to ensure that the roads are being built to the City standards. Councilmember Johns agreed that it would be helpful to have the additional data. Councilmember Kuzma stated that his concern would be that a few hundred dollars would add up over a season. He stated that it would be great to have the data, but he would just be concerned with the additional cost that could accumulate. It was the consensus of the Committee to use the GPR to review the roadway following reconstruction. 7. ADJOURNMENT Motion by Councilmember Kuzma, seconded by Councilmember Johns, to adjourn the Public Works Committee meeting. Motion carried. The regular meeting of the Public Works Committee adjourned at 6:27 p.m. Respectfully submitted, Grant Riemer Public Works Superintendent Drafted by Amanda Staple TimeSaver Off Site Secretarial, Inc. Public Works Committee / July 17, 2018 Page 7 of 7