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on the draft Technical Memorandum will be incorporated into the Master Plan. One copy of the draft Technical Memorandum will be provided in Portable Document Format (PDF). Task 3 Hydraulic Modeling Objective: Obtain copies of existing hydraulic models from IRCDUS (assumed WaterCAD), review, update and run hydraulic models for the reclaimed water system. ATKINS will obtain and review the existing system hydraulic models developed by prior IRCDUS CONSULTANT(S) and recommend modifications or enhancements, prior to updating the models, model assumptions, and growth projections. Atkins will identify data that is missing or data that will need additional efforts to collect, which may require additional services. Subtask 3.1 Hydraulic Models Setup This task consists of preparing the existing hydraulic model for IRCDUS 's reclaimed water system. The model elements that will be reviewed include pumping facilities, storage tanks in the system, and major transmission/ distribution lines (6 -inch and larger pipe). ATKINS assumes that the GIS, CAD, and record drawing files that are available and to be provided by IRCDUS are complete with the attributes (i.e. diameter, pipe material, coordinates, fittings with sufficient resolution, pump station locations) required for the creation of the hydraulic models. ATKINS also assumes that the files have undergone a quality assurance/quality control (QA/QC) process by IRCDUS. Atkins also assumes that the GIS of the modeled pipes and nodes were checked for connectivity (i.e. gaps and overshoots/undershoots have been eliminated). ATKINS included 80 hours in the budget for quality control of these files and to incorporate this data into the hydraulic models. This scope of work does include effort to input the appropriate characteristics of plants and pump stations into the models relative to steady-state modeling approaches and does not include effort to add existing pipes to the models that are not present in the GIS files. Additionally, the SUBCONSULTANT has included limited time to interview IRCDUS staff to obtain insight on system issues and characteristics related to the modeling. Subtask 3.2 Hydraulic Models Validation Of critical importance to the use of any hydraulic model as a predictive tool is a comprehensive validation effort. ATKINS shall calibrate the current hydraulic model to observed actual conditions derived from IRCDUS's SCADA system as part of past master planning efforts. An allowance of 40 hours has been included to perform validation through hydraulic model analyses using available flow monitoring and SCADA data. Additional effort required beyond the allowance will require an amendment to this Scope of Work. Subtask 3.3 Development of Future Model Scenarios ATKINS will incorporate three future demand scenarios into the model using demand data for the 5,10 and 20 demand years. The general modeling approach to develop Master Plan recommendations includes: