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m3pilew Exhibit A Scope of Work Kittitas County Public Works Vantage Highway Pavement and Guardrail Replacement (MP 21.25 to 27.51) KPG Project No. 20047 October 23, 2020 Introduction and Background Existing pavement conditions along Vantage Highway (MP 21.25 to MP 27.51) have deteriorated and requires structural reinforcing. The subgrade is also suspected of having been damaged by significantly heavy loads. The project overlay will result in the need to replace the existing guardrail to meet standards. The project is funded by federal, state and local funds. Federal funding is provided by the Highway Safety Improvement Program (HSI P) and is designated specifically for guardrail improvements. State funding is provided by the County Road Administration Board (CRAB), and the project has been assigned a mandatory 2% UDBE goal. The County has selected KPG, P.S. (KPG) to lead project permitting, develop a complete project design, produce bid document plans, specifications, and engineer's estimate, provide bidding support, and provide limited construction support. Project Description Vantage Highway from MP 21.25 to MP 27.51 (approximate western end of WB passing lane to Vantage City Limits) is anticipated to be repaired and improved with a fiber reinforced asphalt concrete overlay. The additional roadway thickness from the overlay will require new guardrail to meet minimum height standards. The road's vertical and horizontal alignment is not expected to be altered. Shoulder widening is not anticipated except as/if needed to meet current guardrail standards. Vantage Highway within the project limits is classified as a County Rural Collector with an ADT of 586 with 47% trucks. The County has performed a lidar survey of the project extents and has provided to KPG for use in design. The survey is adequate for the overlay and guardrail project design but has not been corrected to vertical datum values. No further adjustment to the survey data is anticipated. Existing utilities within the roadway corridor have not been located by the utility owners or included in the project survey. Utilities are expected to include underground cable and fiber owned by Consolidated Communications. Overhead power is within the roadway corridor but is beyond the edge of pavement and is not anticipated to impact the project. There are no utility relocations and minimal coordination with the utility owners expected for project. The project consists of pavement design for the overlay using fiber reinforced asphalt concrete, guardrail design to current WSDOT design guidelines, supporting geotechnical investigation, cultural assessment and NEPA permitting. 23 Wenatchee Ave, Suite 223, Wenatchee, WA 98801 P: 549.663.2711 www.kpci.com