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water

Ground Storage Reservoir

June 21, 2018

Construction of a 500,000 gallon prestressed concrete ground storage reservoir, site work and site piping.

Conversion of high service pumps from flooded clear well section to canned suction from new ground storage reservoir.

Install transfer pumps to transfer water from water treatment plant to new ground storage reservoir.

Water Treatment Plant Expansion

June 21, 2018

The City of Estherville operates an iron and manganese removal and zeolite softening facility. The plant had adequate softening capacity for growth, but had exceeded the rapid sand filtration capacity of the facility. The expansion was rated at 1,200 gpm and included the following work:

Construction of a water treatment plant expansion of 1200 gpm capacity, including concrete gravity filter cells, masonry building, yard and process piping, line shaft turbine high service and backwash pumps, horizontal split case transfer pumps, HVAC, electrical and control, site work and miscellaneous appurtenant work.

Digester Improvements Project

June 21, 2018

Analyzed digester cover and mixing system alternatives due to condition of existing plant equipment. Selected cover and mixing system to best fit the City’s request for potential future digester gas re-use to reduce plant operational expenses. Dual membrane cover with high velocity nozzle mixing was selected based on life cycle analysis of alternatives.

Performed a plant evaluation of the existing equipment and infrastructure to prioritize improvements to the facility that will not affect potential future improvements to the facility to meeting compliance with the newly issued NPDES permit.