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The initial geotechnical investigation includes the excavation of approximately 10 test pits to evaluate surface soils and determine depth to groundwater at the site. The County will provide a backhoe (Case 580 or similar) and operator for an estimated two 10-hour days for the test pits. Field direction, oversight, sampling, and documentation for the task will be performed by a Jacobs geotechnical engineer. Prior to test pit excavation, Jacobs will perform subsurface utility locations by filing a public "One-Call" 811 utility location ticket and by hiring a private subsurface utility location subcontractor to complete utility locations on the site. Jacobs' survey subcontractor will stake out the test pit locations. Actual investigation locations will be modified in the field to accommodate backhoe access and to avoid subsurface utilities, if present. Following test pit excavation, the test pits will be backfilled with compacted excavation spoils. Jacobs will furnish 1.5-inch-diameter PVC pipe for each test pit to facilitate future groundwater monitoring at the site. The survey subcontractor will also collect the "as-drilled" locations and elevations for incorporation into final reporting and for monitoring of groundwater levels. Jacobs will hire a geophysical subcontractor to collect shear wave velocity profile data at the site using Multi- channel Analysis of Surface Waves (MASW) technology-a surface-based method. Shear wave velocity data is expected to be completed in 1 day and concurrent with the test pit investigation. The shear wave velocity data will be used in combination with the subsequent Phase 2 geotechnical investigation data (to be performed at a later date). A Geotechnical Data Technical memorandum will be prepared summarizing the field activities. Assumptions • 10 test pits to a maximum depth of 10 feet each, or as deep as practical if groundwater is encountered; • Installation of PVC pipe in each test pit to facilitate future groundwater monitoring. Three additional rounds of groundwater measurements following the field investigation. • County provides site access permissions for investigation activities; • County provides backhoe and operator for one test pit (I) event -estimated two (2) days. • Some minor and repairable damage to existing site surface will occur as a result of the field investigation (ruts, disturbed areas, etc) • Test pit locations can be accessed using a rubber-tire backhoe (Case 580 or similar). • Weather and site conditions at the time of geotechnical investigation are reasonable for work; • Site conditions can be reasonably characterized by the proposed investigation. Depending on results of an initial literature review and findings, the actual scope of the investigation may be expanded, or reduced, to be appropriate for the conditions onsite; • Site soils are generally coarse grained sands, gravels, and cobbles. • Site soils are uncontaminated. If contaminated soils are encountered, Jacobs will stop work and coordinate with the County on next steps; Deliverables: • Draft and Final Geotechnical Technical Memorandum (electronic submission) Task 3: Joint Agency Pre-Application Meetings Jacobs will prepare an agenda and meeting notes for one (1) joint onsite meeting with the United States Corps of Engineers (USACE), the Washington State Department of Ecology (Ecology), and the City of Ellensburg Planning (City Planning) to review wetlands and floodplains at the proposed transfer station property. Information gathered from the joint agency meeting will be useful for preparation of a Joint Aquatic Resources Permit Application (JARPA). Assumptions: • The JARPA Meeting will be performed in one IO-hour day including travel. If the three agencies can't meet jointly and separate meetings are required, this would be additional scope of work and would need additional budget.