Modeling and Long Term Control Plan Update Client: Hammond Sanitary District Location: Hammond, Indiana The Hammond Sanitary District retained Donohue to update its Long Term Control Plan (LTCP). The District serves approximately 100,000 residents and its collection system contains over 100 CSO diversion structures, 13 CSO outfalls, and combined, separated, and partially separated portions of the collection system. Donohue has developed a robust MIKE URBAN hydrologic/hydraulic model capable of simulating dry and wet weather flows from the varied service areas including direct runoff and rainfall dependent inflow and infiltration. The calibrated model includes 350 subcatchments, 1,136 nodes, 109 CSO diversion structures, 13 CSO pump stations, and 9 sanitary/collector pump stations. Other ta

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