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Water Treatment Facility needs work to be reliable source

A consultant said Monday that Mitchell's water treatment plant needs significant maintenance to produce clean water in case of emergency. Phil Gundvaldson, project engineer with Infrastructure Design Group, Inc., spoke to the Mitchell City Counci...

Mitchell City Hall. (Republic file photo)
Mitchell City Hall. (Republic file photo)

A consultant said Monday that Mitchell's water treatment plant needs significant maintenance to produce clean water in case of emergency.

Phil Gundvaldson, project engineer with Infrastructure Design Group, Inc., spoke to the Mitchell City Council during its meeting at City Hall. As a backup water supply source, the Water Treatment Facility near Lake Mitchell is a main concern, according to officials at the meeting.

"The condition of the water treatment plant is not able to produce water currently, and we want to explore some options that go into our supplemental supply," said Public Works Director Kyle Croce.

The discussion Monday was guided through a study conducted by two consulting firms, including Infrastructure Design Group, Inc., a Sioux Falls consulting firm, along with AE2S, an environmental and engineering consulting firm. Both have been working with the city to address potential solutions to establishing a reliable secondary water source due to the current backup water supply failures.

"The plant has been used seldom since the city has been contracting with B-Y Water District," Gundvaldson said. "It needs a lot of work to be done before it can become a reliable backup water source."

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Mitchell's current primary water source is B-Y Water District with its treatment facility located in Tabor. According to Gundvaldson, there is a large pipeline starting in Tabor that transports Mitchell's water supply.

The study measures water capacity through million gallons per day (MGD). According to the study, the average daily demand for the MGD in the city of Mitchell is 1.9, but one of the goals from the study is to raise that figure to 2.14 by 2040.

Gundvaldson said Mitchell's water treatment plant has the capacity to produce 7 MGD, but he said it would take an investment in maintenance and staffing for the plant to even produce water, much less 7 MGD.

"It's so site specific, but you're looking for the capability to make sure the water supply is there during an emergency as a result of the failure of the system," Gundvaldson said.

Delvin DeBoer, special projects engineer with AE2S, is one of the partners assisting in the study and referenced a potential failure with the primary water source, using the B-Y water plant pipeline breaking as an example.

"We have this single pipe that's coming from B-Y, and if there is a failure in that pipe, what will it take to bring that pipe back to life and how long would it take to be fixed," DeBoer asked the council.

Using this as an example, DeBoer said it's imperative to provide a reliable backup that meets safe drinking water standards.

DeBoer provided some potential solutions that he and the city are exploring through the study, which includes utilizing future water source alternatives. Some of the alternatives DeBoer unveiled to the council were increasing capacity in the B-Y water system, updating Mitchell's Water Treatment Plant and using well sources.

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"We're developing answers for the city to have the best possible backup water source, and we will continue to work alongside with our partners," DeBoer said.

Consent agenda

The following items were approved at once during the consent agenda portion of the meeting:

• Approved the minutes of the March 3 council meeting.

• Approved department reports.

• Set the date for the following raffle permits: Davison County Democrats with a drawing to be held May 21, 2019; The Imagine Guild with a drawing to be held May 25, 2019.

• Authorized the city's request for a $2,000 grant from the South Dakota Department of Health for equipment to enable city employees to self-monitor their blood pressures.

• Set the date for the following bid opening: April 4, 2019 for the East Central Drainage Project No. 2018-39 to be held at City Hall in the City Council Chambers room.

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• Approved March gas and fuel quotations.

• Approved March 18 pay estimates.

• Approved bills, payroll, salary adjustments and new employee hires.

Other business

The council considered the following items:

• Met with the traffic commission regarding James Valley Cycle Club parade permit request.

• Pledge of Allegiance, received invocation from Salvation Army, roll call, heard citizens' input.

• Approved consent agenda.

• Heard traffic committee report.

• Held hearing and action on the application of Jay Ambe-1 LLC, doing business as Freedom Valu Center, to transfer retail (on-off sale) malt beverage license located at 512 S. Sanborn Blvd. to I Mart Stores LLC, doing business as I Mart Stores, located at 512 S. Sanborn Blvd (license is ineligible for lottery); for the application of Jay Ambe‐1 LLC, doing business as Freedom Valu Center to transfer retail (off sale) packaged liquor license to I Mart Stores LLC, doing business as I Mart Stores, located at 512 S. Sanborn Blvd.

• Approved the application of Mitchell Main Street & Beyond for a special event permit, consumption permit and noise permit located on Main Street between Fifth Avenue and Seventh Avenue, also including the Corn Palace Plaza between Main Street and Lawler Street, for the following Fridays: May 3, June 7, July 5, August 2 and Sept. 6 for First Fridays on Main.

• Met as the Board of Adjustment, held hearings and approved Yvonne Steward, and Mid Dakota Properties, owner, application for a conditional use permit (family residential child care) at the property located at 517 N. Duff St., legally described as the south half of Lots 1 and 2 and the north half of the vacated alley, Rowley's second addition, northeast quarter of Section 21 in Mitchell Township, city of Mitchell. Zoned R4 multi-family residential district.

• Discussed water supply study with Infrastructure Design Group, Inc.

• Approved appointment of volunteer member to the consolidated Board of Equalization.

• Approved and awarded Spencer Quarries as recommended bid for rock chips project No. 2019-10, which will cost $33,250 for 2,500 tons.

• Approved and awarded bids for petroleum products project No. 2019-13: Item No. 1 petroleum products CRS-2-P emulsion from Jebro Inc. in the amount of $557.50 per ton in which the city will use 230 tons throughout 2019; Item No. 2 petroleum products crack sealer, which the city recommends Midstates Equipment and Supply in the amount of $1,028 per ton for boxed material and $996 per ton for unboxed material; Item No. 3 petroleum products CSS1H 75:25, which the city recommends Jebro Inc. in the amount of $372.50 per ton.

• Approved and awarded bid for dump truck chassis city project No. 2019-16 to I-State Truck Center.

• Approved and awarded bid for combo dump body and sander project No. 2019-17 to Sanitation Products.

• Approved agreement No. A2019-11, update to Axon body camera contract (tabled from March 4 council meeting).

• Approved agreement No. A2019-13, Brosz Engineering, Inc. for engineering services for Sanborn bridge rehabilitation project No. 2018-22B.

• Approved agreement No. A2019-14, Calvary Cemetery maintenance agreement.

• Approved agreement No. A2019-15, settlement agreement with MSH Architects in relation to the weld remediation issue at the Indoor Aquatic Center.

• Approved resolution No. R2019-20, approving an encroachment easement at 407 S. Rowley St.

• Approved resolution No. R2019-21, ambulance agreements with Avera at Home.

• Approved resolution No. R2019-22, bridge reinspection with the South Dakota Department of Transportation, which will include the Canal Bridge, Burr Street Bridge and Foster Street Bridge.

• Called an executive session, citing legal discussion and no action was taken.

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