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Our response The impact Working with our subconsultant, GHD installed 14 The model will continue to serve as a living inventory of flowmeters and four rain gauges within the southern the interceptor system. GHD will continue to work with portion of the Town of Lockport and the Town of NCSD to keep the model updated with any changes Pendleton to focus model recalibration in that area. made to the sewers or pump stations. Using the computed-based, system-wide PCSWMM The model will be used for predictive scenarios and hydraulic model created by GHD in 2016, this data future planning, especially in the case for construction of will be used to recalibrate the model in areas new subdivisions in Lockport, NY. upstream of the metered sewers using the newly collected information. Inflow/infiltration (I/I) will be modeled using recalibrated RTK unit hydrographs; the industry standard method for modeling I/I. Pump stations in the area of interest will be remodeled based on actual operating parameters including pumps curves, pump on elevations, and pump off elevations. In the future, this updated model will be utilized to conduct Downstream Capacity Analyses (DSCA), which aim to identify areas of concern within the sewer system and pinpoint potential capacity issues resulting from new developments and ongoing I/I removal efforts by the District and/or member towns. Particular attention will be given to the downstream capacity of South Lockport’s interceptor system to address any capacity issues arising from the proposed and ongoing subdivision construction. Pump capacity at the various pump stations will also be investigated. Model results will be presented in an engineering report that describes calibration methods and model statistics following the outline in the Chartered Institute of Water and Environmental Management Code of Practice for Modelling Urban Drainage Systems. ghd.com Page 177 of 301