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Obtain available existing information, including but not limited to: <br /> • GIS layers (attributes) <br /> o Pipeline condition assessment and ranking in available format. <br /> o Pipes (diameter, length, u/s and d/s MH connectivity and invert elevations, material) <br /> o Manholes (depth/invert elevation, rim elevation, connecting pipe offsets) <br /> o Soil info (geologic classification, infiltration rates or hydraulic conductivity) <br /> o Parcels <br /> o Right-of-way (ROW) <br /> o Flow monitors and Rain Gauge locations <br /> o Streets <br /> o Water bodies <br /> o Topography (5-ft or less resolution elevation) <br /> o Pump Stations <br /> o Other storage and diversion structures <br /> • Flow and rainfall monitoring data in 15-min increments or less <br /> • Large user (industrial, institutional, etc.) flow data estimates if available <br /> • Existing hydraulic and hydrologic(H/H) model in coordinate system corresponding to City's <br /> GIS <br /> • Existing population and future projections; employment data if available <br /> • Pump station parameters and condition information (pump curve, start/stop elevations, <br /> point of operation if variable speed pumps are used) <br /> • Pump Curves and start/stop levels/elevations <br /> • Wet well dimensions and as-built drawings <br /> • Force main profile, size, length and material <br /> • Pipe/Manhole Condition Information <br /> • Water consumption data for service area <br /> • Design standards including minimum slopes, design rainfall storm events, , maximum <br /> allowable d/D (depth/Diameter) ratios by pipe sizes, peaking factors, allowable <br /> infiltration/inflow rates (gallons per acre or gallons per feet of pipe or gallons per inch-dia- <br /> mile) <br /> • City agreements with adjacent sewer providers (inter-governmental agreements) <br /> City of Everett MURRAYSMITH 2023 Comprehensive Sewer Plan <br /> March 2021 6 <br />