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Council hears storm water presentation from Ollson

April 27, 2011

in Local

By Kyle Siegel
Staff writer

The Sedalia City Council met for a work session Monday night where they heard a presentation from Ollson Associates over an update to the Storm Water Master Plan.

Tony Stanton, head of the water resources group for Ollson Associates, spoke with the council and gave a presentation which outlined two new ordinances required by State and Federal mandates for construction of new properties and how they handle storm water management.

“The ordinances deal with a pre-construction ordinance and a post-construction ordinance,” Public Works Director Bill Beck said.

The ordinances will help the city deal with erosion and pollution measures during new construction.

Ollson Associates also wanted to get the council’s tentative direction on whether or not the city would want to be responsible for the building and maintenance of storm water quality devices or leave the responsibility to the private owners.

Such devices include stream buffers, wetlands, bio-retention and permeable pavement. The reasons these devices are now required are to deal with water quality released back into the water cycle.

New devices, such as those listed, help filter any pollutants from the water by retaining the water longer and allowing it to absorb at a slower rate.

Stanton informed the council that annual maintenance costs range from three percent to nine percent of the initial construction costs.

Ollson Associates did extensive research and found that on average the construction of these devices costs an additional $3,500 for residential construction and $11,000 for commercial construction.

Ollson Associates informed the council that it estimates maintenance costs at around $30,000 per year.

The city council made a voice vote and determined that private property owners should be responsible for this upkeep.

Ollson Associates also gave an update on the progress made with the sanitary sewer project.

During the update, video was shown of the cleaning and inspection process of some of Sedalia’s sewer mains.

The video showed some issues, such as roots growing into the pipes and service connections sticking into the pipes.

The video also showed a section of a pipe where someone had improperly disposed of concrete. Over time the concrete dried and almost closed the sewer main.

Ollson Associates also informed those in attendance that the topographic survey for the Wasterwater Treatment Plant Improvements project was complete, and the boundary surveys and geotechnical work are currently in progress.

The council ended the evening by approving an ordinance for the final plat of the Kindle Addition, which is a proposed housing development near Katy Park.

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