Laserfiche WebLink
12 <br /> Scope of Work <br /> Continued <br /> with a summary of each relevant basin issue including location, type of issue, an <br /> estimate of the severity of the issue, and where available a photograph of the <br /> issue. <br /> 3.1.5 Survey of Basin Infrastructure for Hydraulic Analysis <br /> City staff will obtain field measurements of drainage infrastructures as needed to <br /> analyze identified water flow issues. The field measurement will include a hand <br /> drawn schematic of the drainage structure, measurement down from the <br /> structure rim to the inverts of each pipe in the structure, a measurement of all <br /> pipe diameters, and identification of each pipe material type. Based on the <br /> schematics of each drainage structure, the City staff will identify the apparent <br /> storm drainage network connections on an aerial map with LiDAR contours <br /> turned on. <br /> 3.2—Otak GIS Mapping and Data Management <br /> The City's GIS database provides a structure for managing basin information. Otak will <br /> use the City's and other GIS databases for the following activities: <br /> • Basemaps for field observations <br /> • Basin water quality and environmental assessment <br /> • Input data for hydrologic and hydraulic models <br /> 3.3 Inventory of Basin Conditions <br /> 3.3.1 Desktop Assessment of Basin Conditions <br /> Review and summarize studies, reports. Otak will perform Level 1 field <br /> inventories (per Table 4-1 of the Protocols document) in preparation of Workshop <br /> 1 for basic assessment of the conditions within each basin. No field <br /> measurements will be taken at this time. <br /> 3.3.2-Basin Characterization Field Observations <br /> Otak staff accompanied by City staff will perform Level 2 basin characterization <br /> field observation (per table 4-1 of the Protocols document) for hydraulic, water <br /> quality, and habitat conditions. The water flow and water quality leads will spend <br /> up to five field days each reviewing and documenting the physical features, land <br /> cover, and drainage characteristics of the nine basins as a part of the basin <br /> characterization work. The observations will be made from locations within public <br /> rights-of-way. <br /> The habitat lead, with City Staff, will spend five day collecting the stream habitat <br /> data to characterize up to 10,000 feet of the watershed's key stream reaches <br /> City of Everett—Surface Water Comprehensive Plan Phase 2 6 <br /> February 13, 2012 131 otak <br />