Boone Wastewater Treatment Plant Upgrades

Nilles Associates designed the solids processing system upgrade at the Water Pollution Control Plant in Boone, Iowa. The project consisted of a 1,750 square foot building addition, mechanical HVAC, electrical, equipment design (including a belt filter press), positive displacement...

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Winterset Reverse Osmosis System

The Winterset Reverse Osmosis System project addressed elevated nitrate levels in Winterset Municipal Utilities finished water. Nilles Associates addressed this issue by utilizing cutting edge technology which consisted of the design of an 800,000 gpd Reverse Osmosis (RO) System....

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Hubbard Lagoon Improvements

Nilles Associates completed the design and construction administration services for the expansion of Hubbard’s treatment plant to a four cell lagoon system. The design process consisted of upgrading the existing two cell lagoon system to a four cell lagoon...

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Lenox Schools Athletic Track & Field Revitalization

Nilles Associates prepared construction documents for site improvements of the Lenox Schools track and football field facilities. The revitalization project also included construction administration, staking, and observation coordinated with the construction company and their subcontractors. Work on the track...

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Hudson Trail & Pedestrian Underpass

Hudson Trail is a 1.6-mile trail extension project along the U.S. Highway 63 corridor in Hudson, Iowa. The objective of the project was to both extend the existing Sergeant Road Trail south through the City of Hudson, as well...

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SW State Streetscape

Southwest State Streetscape is a 1/4 -mile, 2-block arterial corridor improvement project along State Street in Ankeny, Iowa. The intent of the project was to calm traffic and encourage pedestrian activity between the residential neighborhoods on the west and...

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Prairie Trail Parkway

This 2-mile, 2-lane corridor through Prairie Trail was completed in four phases from 2008-2018. Varied cross-sections include residential, commercial, parks, and stormwater wetlands. Nilles Associates performed surveying, civil engineering, construction administration and observation, as well as staking. Features include...

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Chautauqua Park Recreational Trail

Chatauqua Park Trail is part of a larger accessible trail network throughout Prairie Trail. This trail and greenway were planned improvements to the public lake and wetland areas in Prairie Trail. Located within a quarter mile of retail center,...

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Painted Woods

Painted Woods is a single family development in Waukee with large lots set in mature oak woodland. Nilles Associates worked with the developer to minimize grading, emphasize natural elements of the site, and to encompass the creek section into...

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Boone Water System Modeling

The Boone Water System Modeling project is an analytical examination of the existing water main network to help the City of Boone, Iowa identify shortcomings in the distribution system. Nilles Associates utilized all available data on the existing water...

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