The City of Madison, Engineering Division (CITY) would like to evaluate the current sanitary sewer system capacity within sewersheds located within the Study Area, shown in EXHIBIT 1. The engineering consultant selected to complete the work (CONSULTANT) shall complete an agreed upon scope of work to meet the following objectives: 1) Develop a calibrated existing conditions 1-Dimensional Sanitary Sewer System Model to assess current system capacity and evaluate potential future projects. a) The CITY desires staff to be able to easily update and maintain the model(s) once completed to assess sanitary sewer system impacts from future individual multifamily residential developments. i) In areas of anticipated future developments, the CITY would like the model resolution to be as detailed as reasonably possible. ii) Models shall include main trunks and local collection systems to the extent practical. iii) In order to appropriately assess the system it is expected that many small mains (i.e. 8-inch diameter pipes) will be included throughout the model. iv) The sanitary system may be simplified in portions of the study area within the model(s) as long as the project objectives can still be met. b) The model(s) shall be calibrated to observed flow, level, and pump run time data. i) CONSULTANT will develop and implement a monitoring data collection plan to provide data for use in calibration of the model(s). ii) CONSULTANT will calibrate to dry weather conditions only and provide recommendations for future I&I investigations and wet weather calibration. c) CONSULTANT will collaborate with CITY to create a Modeling Guidance document to provide standardized guidelines for future sanitary sewer modeling projects. 2) If able, given the anticipated project budget and timeline, the CITY would like to develop a future conditions analysis of the Study Area to understand system capacity limitations under future population projections. A project scope of work developed by the CITY with tasks and deliverables is provided below. If based on the objectives described above, the CONSULTANT feels the approach is insufficient to meet the CITY’s objectives, please propose an alternative scope of work to define the approach or modifications to individual tasks and deliverables for consideration. All cost estimates shall refer to the specific task number or sub-task component as outlined in the Cost Proposal document.
