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Scope of Work <br />continued <br />City of Everett 12 <br />Dorn Ave. Drainage Improvements Otak <br /> <br /> <br />TASK 8 DELIVERABLES <br /> 60%, 90%, 100% (draft and final) plans <br /> 60%, 90%, final, Construction Cost Estimate and summary of quantities <br /> Draft Specifications including Special Provisions at 90% <br /> Final full Project Manual <br /> Draft and final Design Report <br />TASK 8 ASSUMPTIONS <br /> Water Quality treatment will only be taken to 30% design, but the conveyance system will, to the extent <br />possible, accommodate the future water quality facilities. <br /> City comments on plans and Otak responses will be compiled in a review comment form. <br /> Specifications will be completed in Word – edits/comments in track changes <br /> 60% will include a list of non-standard bid items, 90% will include draft specifications including special <br />provisions. <br /> Submittals of plans, specifications, estimate and reports will be electronic <br /> <br />9. Geotechnical Support (HWA Geosciences) <br />Otak will review Geotechnical deliverables and provide coordination for the geotechnical work. The <br />geotechnical subconsultant Scope of Services is included in Attachment B. Boring Logs will be included in <br />the Geotechnical Memorandum. Geotechnical report will be included as an attachment in Task 8.6. <br /> <br />10. Environmental Assessment and Permitting <br />Solution Element 1 will move an existing outfall to North Creek slightly downstream into a public <br />easement. Solution Element 2 will create a new outfall into an existing detention facility or into North <br />Creek at McGill Road. <br /> <br />10.1 Wetland and Stream Delineation Report <br />Otak will conduct wetland and stream delineations within the project areas for both utility alignments. The <br />delineated wetland boundaries and ordinary high water (OHW) line at the existing outfalls will be marked <br />with flagging or wire flag stakes as appropriate and surveyed with a handheld GPS with sub-meter <br />accuracy by Otak. Utility lines are expected to be replaced mainly within existing roads or other paved <br />surfaces and are not expected to impact environmentally sensitive areas, but vegetation clearing may be <br />necessary in the vicinity of the outfalls to North Creek. The area for the wetland and OHW flagging will <br />extend for 50 feet to either side (100-foot-wide corridor) of the proposed alignment. Wetland/stream <br />boundaries beyond the 100-foot-wide survey corridor will be visually estimated. <br />Wetlands will be delineated using the Corps of Engineers Wetlands Delineation Manual (1987) as <br />amended, and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western <br />Mountains Valleys, and Coast Region (2010) as required by the City of Everett, WDFW, Ecology, and the <br />Corps of Engineers. All delineated wetlands will be rated using the Washington State Wetland Rating <br />System for Western Washington – 2014 Update (Ecology Publication No. 14-06-029) to classify wetlands