SCS Engineers Professional Service Agreement

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Perform a site safety review in reference considering falls, tripping, pinch points, pedestrian traffic, visibility, vehicle traffic, and other hazards, as appropriate. Review all previously performed permitting and zoning reports and studies including the SEPA Environmental Checklist (WAC 197-11-960), Critical Areas Report and approval, City of Ellensburg Land Application and approval, Boundary and Topographic Survey, and the United States Army Corp of Engineers (USACE) Nationwide Permit (NWP) 39. ldentify specific requirements that must be included in the design to compile with permitting requirements (i.e. buffer setback areas). Review geotechnical reports and studies. Deliverablesr Existing lnformation Summary Task3-FieldWork 3.1 Surveying SCS's sub-consultant, Cruise & Associates (Cruise), will perform additional topographic surveying services needed for design phase services of this project. Field work is limited to providing new topographic mapping along the new access road, the new drainage diversion channel, areas disturbed during Phase I construction (soil stockpile areas), and invert elevations for existing stormwater culverts and sewer manholes. Cruise will amend the previously prepared topographic survey for the project. Deliverables. Amended Topographic map of the 38-acre parcel. 3.2 Geotechnical SCS's sub-consultant, HWA GeoSciences lnc., will conduct a geotechnical investigation that includes reviewing available data and performing a subsurface exploration program. The program will be designed to supplement the Phase I geotechnical program that included a number of shallow boreholes conducted along the site perimeter that were supplemented by test pits within the site interior. We propose to perform subsurface boreholes at all building locations (tipping building, scalehouse, Moderate Risk Waste (MRW building, and composting area)to determine subsurface conditions, soil bearing pressures, depth to groundwater, and depth to the subsurface cobble layer. Borehole locations will be finalized after the conceptual layout is finalized. Drilling will be conducted using sonic boring methods to eliminate the potential for shallow refusal on cobbles. During the field exploration program, HWA also proposes to measure groundwater elevations in the existing temporary piezometers to determine if depth to groundwater elevations have changed since the conceptual development. A geotechnical report will be prepared to summarize results of the field investigation, laboratory test results, and will include recommendations for building and retaining wall foundations, earthworks, and pavement design. HWA will also provide one round of plan review to verify the geotechnical recommendations are incorporated. Deliverableso Draft and Final Geotechnical lnvestigation Report. Task 3 Assumptions. Surveying - Field work limited to areas disturbed during Phase I Construction.r Complete one (1) boring to 50', four (4) borings to 2O'. Professional Se rvices Ag ree ment (r ev . 09 124 I 20 1 8) Page 14 of 23 a