Agenda - Council - 04/28/2020 - Laserfiche WebLink

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to verify the specific pavement and aggregate base materials, as well as the subgrade soils. In 2017, the City collected ground penetrating radar data to evaluate existing pavement sections on 32.7 miles of public streets proposed to be reconstructed or to receive pavement mill and overlay improvements in the 2017 - 2026 CIP. Proposals were received from the two companies known to provide such services at the time; Braun Intertec Corporation and American Engineering Testing, Inc. Braun Intertec submitted the lowest proposal fee and was awarded the contract in 2017. Fast forward to 2020 and the need to review our 10-year CIP comprehensively to ensure all of the PMP projects listed in it can likely be completed as proposed, and that the estimated costs accurately represent the work required to complete the project. Staff has reviewed all available information for public street segments across the City and has identified 117 miles of public streets that have no as -built record plans or project inspection records to identify the existing pavement section with confidence. Attached is a map showing these 117 miles of street segments (shown in blue), as well as the 32.7 miles of street segments on which GPR data was collected in 2017 (shown in red). Requests for Proposals for collecting GPR data on up these 117 miles of City streets were again submitted to Braun Intertec Corporation and American Engineering Testing, Inc., and both firms submitted proposal responses by the due date of Tuesday, April 21, 2020. A copy of the RFP is attached for reference. The proposal fees received from both companies are tabulated below. Company Braun Intertec Corp. American Engineering Testing, Inc. Proposal Fee 1 $64,935 ($555 / mile) 1 $90,675 ($775 / mile) Braun Intertec's proposal fee is the lowest and Staff recommends awarding a contract for the 2020 ground penetrating radar pavement evaluations to Braun Intertec. Braun is required to maintain minimum insurance coverages, and to complete all field work during normal working hours between 7 AM and 8 PM, Monday through Friday, in accordance with City ordinances. Field work primarily consists of driving a pickup truck with a GPR collection unit mounted on a trailer hitch at normal operating speeds along each street segment to be analyzed. In addition, a minimal number of pavement cores are also collected for use in calibrating the data. The pavement core holes are then backfilled and patched. Braun must complete their work and deliver their final report to the City by Thursday, July 2, 2020. This will allow staff to conduct a comprehensive review of all PMP projects (pavement overlay and reconstruction projects) listed in the 2021-2030 CIP by this fall. Notification: Notifications are not required for this case. Observations/Alternatives: Observations: Fees were requested on a per mile basis to allow for collection of additional data on other street segments, if needed. Alternatives: Alternative #1 - Adopt Resolution #20-084 accepting proposals and awarding a contract for 2020 Ground Penetrating Radar Pavement Evaluations, Improvement Project #20-06. Funding Source: