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"i=n 2 <br /> Assumptions <br /> 1. Elevations will be referenced to the NAVD88 vertical datum using elevations of <br /> benchmarks in the vicinity of the WPCF. Horizontal coordinates will be referenced to the <br /> NAD83(1991)Washington North Zone State Plane coordinate system <br /> 2. Perteet will not enter any confined structures in order to determine invert elevations. <br /> Measurements will be undertaken from the surface,to the extent such measurements <br /> can be made <br /> 3. Applied Professional Services, Inc.will be used for marking underground utilities within <br /> the project limits, to the extent that they can be located by their equipment; some non- <br /> conductible underground lines cannot be located and thus cannot be surveyed. <br /> Subsurface Utility Engineering evaluation will be Quality B Level defined as the <br /> application of appropriate surface geophysical methods to determine the existence and <br /> horizontal position of the utilities within the project limits.This activity is called <br /> "designating".The information obtained in this manner is surveyed to project control. It <br /> addresses problems caused by inaccurate utility records, abandoned or unrecorded <br /> facilities, and lost references. <br /> 4. _ Applied Professional Services, Inc. will be used to pothole in approximately six places on <br /> the top of the existing 54" pipe. Four of the potholes will be in the immediate vicinity of <br /> the 54" pipe right angle structure, located next to the gate to the Industrial Pretreatment <br /> area of the WPCF. Two other pothole locations will be determined at a later date, <br /> depending on the needs of HDR. Any additional potholes beyond these extents may be <br /> considered an Additional Service. <br /> 5. One additional day of fieldwork and associated drafting time is included in this Scope for <br /> other survey needs that may arise during the course of design by HDR <br /> 6. The boundary of the survey is indicated in the figure in Attachment A.The approximate <br /> area to be surveyed is 3 acres. <br /> Deliverables <br /> 1. AutoCAD version 2014 basemap drawing. <br /> 2. Digital Terrain Model file <br /> Task 300 ® Geotechnical Investigations and Design Report <br /> Objective <br /> Conduct geotechnical investigations and provide design recommendations for the design of <br /> DSO, pipelines and structures. <br /> HDR Services <br /> 1. Manage subconsultant <br /> 2. Provide information to subconsultant as requested. <br /> 3. Review geotechnical design report and assist the structural design team in applying the <br /> recommendations of the report during final design. <br /> City of Everett—DSO Modifications 1 4 Scope of Services <br />