Tuesday 4:30 PM
[Presentation PDF]

Room: Sapphire

Iowa City Wastewater Expansion Planning for Nutrients and Flood Mitigation

Paper will discuss collection system modeling and plant expansion planning to meet ammonia and nutrient removal objectives with consideration of emerging compounds of concern. Plant expansion of the south treatment plant is needed to allow decommissioning of the flood-prone and aging north plant which was inundated by floodwaters in 2008, and to facilitate future city growth. The planning work includes extensive trunk sewer system modeling along with service area analysis to develop future flows and evaluation of several different biological and chemical nutrient removal processes to meet treatment objectives. A major component to the planning is level of service concept for uncertain future nutrient requirements.

Moderator:  Krishna Pagilla


Jay Brady - Stanley Consultants

Jay Brady is a Principal Environmental Engineer with Stanley Consultants with wastewater system experience since 1989.  Jay’s project experience includes domestic and industrial wastewater treatment plant planning, evaluation, and design.  Process experience includes pumping, preliminary treatment, primary and secondary sedimentation, activated sludge systems including biological nutrient removal, chemical and UV disinfection, solids thickening and dewatering, and anaerobic, and aerobic digestion.   Other wastewater system experience includes pump stations, sewer system planning, combined sewer system overflow mitigation and long term plans, and on-site treatment systems.  He is a member of the American Society of Civil Engineers (ASCE), the Society of American Military Engineers (SAME), American Water Works Association, and the Water Environment Association including Central States, Illinois, and Iowa affiliates. . Jay has Bachelor and Master degrees in Civil and Environmental Engineering from the University of Iowa.

Candice Bark - Stanley Consultants

Candice Bark is an environmental engineer with Stanley Consultants. She has professional experience since 2006.  Candice’s project experience includes domestic wastewater treatment plant concept layouts and design, wastewater collection and pumping system design, industrial storm water management, storm water and sanitary sewer system modeling, and land use permitting.  She has extensive experience in modeling sanitary and combined sewer systems using programs such as EPA SWMM (Storm Water and Wastewater Management Model), xpswmm, SewerCAD, StormCAD, FlowMaster, as well as other various storm water modeling programs.  She is a member of the American Society of Civil Engineers (ASCE) and the Society of American Military Engineers (SAME) as well as the Secretary for the ASCE Quad City Section.  Candice has bachelor degrees in Environmental Engineering and Spanish from the University of Wisconsin-Platteville and a master’s degree in Environmental Engineering from the University of Iowa.