2022-09-28 WS & CC Meeting Packet

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City of Centerville Proposal QTB166153 September 21, 2022 Page 2 Soil Related Services Sample and test aggregate base and select granular materials for compliance with the project documents. This task includes laboratory gradation testing. Concrete Related Services Sample and test fresh concrete associated with general concrete placement for compliance with the project documents and cast test cylinders for laboratory compressive strength testing. We assume that we will be able to appropriately dispose of excess concrete (and associated wash water) on site at no additional cost to us. Prepare 4-inch by 8-inch cylinders for compressive strength testing. One set of three cylinders will be cast each trip that will be tested at 28 days. If field cure cylinders are requested, each additional cylinder will be charged at the unit price listed in our cost estimate. Measure and report the compressive strength of the concrete test cylinders for compliance with the project documents. Bituminous Related Services Sample and test bituminous pavement materials for compliance with the project documents. Perform tests on these samples which will include asphalt content and extracted aggregate. Measure the in-place density of the fresh bituminous with a nuclear density gauge to observe and document the contractor’s roll pattern. Consulting, Project Communication and Reporting Services Project management, including scheduling of our field personnel. Review test reports and communicating with you and the parties you may designate such as the project contractor(s), and other project team members, as needed. Transmit test results to the project team on a weekly basis. Basis of Scope of Work The costs associated with the proposed scope of services were estimated using the following assumptions. If the construction schedule is modified or the contractor completes the various phases of the project at different frequencies or durations than shown in this proposal, we may need to adjust the overall cost accordingly. The scope of work and number of trips required to perform these services are as shown in the attached table. Notable assumptions in developing our estimate include: We assume three trips to pick up samples for laboratory testing of aggregate base, select granular, and topsoil borrow materials. We assume four sets of concrete tests will be required to complete the project.