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TAIT & Associates, Inc. On -Call Engineering Services Area 6 Slurry Seal and Overlay Project Diamond Bar. CA TAIT & Associates was selected by the City of Diamond Bar to provide design engineering services for the Citywide Zone 6 Slurry Seal and Overlay Project. The project included the design of an entire neighborhood zone within the City of Diamond Bar which included the field identification, implementation, and design of over 800,000 SF of AC Grind and Overlay, and 1,200,000 SF of Slurry Seal located within the northern limits of the City of Diamond Bar. In addition to the pavement analysis, design, and implementation, TAIT was also responsible for identifying sidewalk, curb and gutter, and curb ramp improvements throughout the neighborhood including the removal and replacement of 19 curb ramps within the steep, curvilinear streets of Diamond Bar. Special attention was paid on this project to the appropriate use and identification of patching areas in order to maximize the City's budget and to ensure constructability of the project. TAIT worked closely with City staff to identify and isolate areas of concern in order to ensure the City's benefits were maximized on the job. Of notable interest on this project was the removal and replacement of speed cushions throughout Sunset Crossing which would not be compatible with the installation of an edge grind and overlay. Additionally, careful attention was paid to the presence of existing utilities to ensure the proposed roadway treatment was taking in to account the required adjustment (for overlay) and protection (for slurry seal) work items. Campus Drive Pavement Rehabilitation Project Irvine, CA TAIT was selected by the City of Irvine to provide civil engineering and surveying on the Campus Drive Rehabilitation Project from Michaelson Drive to University Drive. The project limits include a total of 4000 linear feet of arterial roadway rehabilitation and reconstruction on Campus Drive which is a 2 lane arterial roadway with bike lanes extending through the City of Irvine. The project includes the design of pavement rehabilitation strategies as well as the identification and replacement of non-ADA compliant curb ramps, sidewalk, replacement of damaged curb and gutter, reconstruction and re- grading of the low point of the roadway due to flooding and ponding issues, coordination with IRWD and UCI for right of way and wetlands protection, and the identification and adjustment/protection of utility facilities throughout the project limits. Careful attention was paid to the roadway profile which required modification in order to raise the low point of the roadway by more than 6". Plan and profile for the roadway was re -designed per CA Highway Design Manual standards, and extensive coordination with conducted with the City to verify that the pavement replacement scenario is in line with the proposed and revised grades. 1IITAIT Reference: John Beshay, Former Associate Engineer (626) 960-4011, Ext: 459 Key Staff: PIC: Jacob Vandervis PM: David Sloan QA/QC: Todd Schmieder Client: City of Diamond Bar Construction Cost: $1.5 M Design Cost: $46,750 Project Dates Design: Winter/Spring, 2018 Construction: Summer, 2018 Reference: Darrell Hartman, PE (949)724-7556 Key Staff: PIC: Jacob Vandervis PM: David Sloan QA/QC: Todd Schmieder PE: Chris Engelbach Client: City of Irvine Construction Cost: $2.6 M Project Dates: Design: 2017-2018 Construction: 2018 Page 1 12