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SHERIDAN — The Sheridan Area Water Supply joint powers board approved spending an additional $7,900 on its contract for a SAWS mapping and modeling project at its regularly scheduled meeting Wednesday.
The contract with DOWL HKM provides routine updating of the hydraulic model used by SAWS to monitor its water system so it can better plan for future development and water use, said Jeff Rosenlund of DOWL HKM.
The original contract for the mapping and modeling update was $15,450, but searching through records and tracking down all construction projects in the last five years took more time than anticipated. The number of projects found was approximately double the amount predicted. Originally 2011 meter data was used to model system demand, but with the project extension, it was decided to update to 2012 water use data.
Additionally, the original budget did not include an analysis and report on the Soldier Creek Road water line, according to a staff memo prepared by project manager Dan Coughlin.
The project is now contracted at $23,350.
“The hydraulic model was developed in the early ‘90s when the SAWS system was designed,” Rosenlund said. “Throughout the years, DOWL HKM has kept the model up-to-date with projects as they’re built. This is another update. We went back five years or so and got all the projects that had been built, and we’re updating to put new water lines in the model, and the demands and water use as it occurs. We update the demands to see if water use is growing or not growing.”
According to Rosenlund, 2006 — a hot and dry year — had the peak day on the system at a record 11.8 million gallons per day.
Having an up-to-date map and model of the SAWS water system allows SAWS to determine low pressure points in the system, conduct fire flow analysis to determine good hydrants for fire suppression and examine hydraulic capacity to determine how much water the system can supply for future developments, Rosenlund said.
For example, there has been interest in development in the Soldier Creek area, but the line is already at capacity. Using the SAWS map and model system, Rosenlund can show the options for providing water such as installing new tanks, upgrading pump stations and installing new booster stations, which could allow up to eight more users.
In other business, SAWS board members discussed the draft budget for fiscal year 2014. Estimated revenues are set at $3,980,268 and expenditures are set at $3,213,881, producing net funds of $766,387.
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