Brown and Caldwell, Inc. 9/20/2023

PGSF WMVD Storm and Combined Sewer Design Scope of Work 08-25-2023 17 of 41 Category 2: Sensitive information Category 2: For official use only / disclosure permissible by law. the Washington State Reference Network (WSRN) in conformance with industry standards. This survey control is propagated, as required, utilizing standard terrestrial total station measurements. Existing survey control at the PGSF will be matched into to ensure continuity between the projects. · Geodetic Survey Control (Coordinates) ▪ Current WSRN coordinate system is NAD83-2011 Epoch 2010.00 Coordinates. ▪ Horizontal survey work shall reference the Washington State Plane coordinate System of 1983 as established in accordance with Chapter 58.20 RCW. ▪ Vertical Datum for the survey work shall reference the NAVD88. ▪ Cadastral • Lines established and marked on the ground by suitable monuments, which are used as starting and closing points in surveys of the public domain of the United States. Required for all boundary and or right-of- way surveying efforts. ▪ Units shall be in US Survey Feet. ▪ Up to 10 aerial panels will be set and coordinates established to facilitate the georeferencing of the aerial survey. • Field Surveying and Mapping o This task includes the field surveying and mapping required for this specific effort. Survey will use a 3D Laser Scanner supplemented with traditional Total Station and GPS technologies to collect the data for use in the creation of a basemap of the corridor. Mapping will be limited to within City ROW and within Port of Everett property southing of the PGSF treatment site and west of the BNSF railroad tracks. o Survey will provide ground-based topographic surveys to generate basemaps at a 1”=20’ scale and to prepare DTM generated 1-foot contours. Field survey will pick up curbs, edges of pavements, drainage structures (centers of lids), fences, mailboxes, retaining structures, culverts, guard rails, utility surface features, field markings of existing sub-surface utilities, traffic and business signs, striping, trees (type and size for trees over 6-inches DBH), and limits of landscape areas. o City will obtain Right of Entry for survey on private property (if needed). Surveyor will use appropriate signage, high-visibility clothing and traffic control devices while performing field survey. o Up to 26 potholes will be located as a part of this task. • Utility Surveying Services o Surface Observable utilities will be located as found within the surveying limits. Underground Conductible utility paint marks, as marked by a utility locating company, will be located within the surveying limits. Measure Downs for sewer manholes, catch basins and storm drain manholes with pipe size, material, direction, and invert elevations will be obtained, if possible, at each structure. Nearest drainage structure outside the mapping limits will also be collected. • Office Processing o This task includes the office processing of the collected survey data, data extraction, field book note reductions, CADD drafting, and other duties required for the generation of the deliverable(s). For 3D laser scanning efforts, sub-tasks include the registering of point clouds; evaluating the registrations; exporting the point cloud data to Civil3D; creating or picking of appropriate points in Civil3D; Linework and Layering, and standard CADD drafting of the deliverables, as required.