Utility Committee Agenda and Packet 2019 03 15

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City Council Utility Committee Meeting Minutes Friday, January 18, 2019 Page 2 of 5 Mr. Elkins spoke about the Wastewater Treatment Plant (WWTP) project objectives and the benefits that staff received for attending the WEFTEC Conference in 2018. In 2019 the WWTP group plans to focus on the SCADA System and additional automation with advancements in the asset management system and automating reporting to the Colorado Department of Public Health and Environment (CDPHE) and Environmental Protection Agency (EPA). Mr. Elkins outlined several performance charts for the new WWTP included in the Committee packet. Mayor Muckle asked if the new process has improved the odor control, specifically at the discharge location. Mr. Elkins said staff sample monthly at the discharge and have not experienced any issues. Mr. Elkins finished his presentation with a summary of two pilot program currently underway. The first is a chemical treatment program for the management of fats and oils buildup within the treatment process. The second pilot program is related to the use of biosolids onsite that will save an estimated $10,000 in 2019 by reapplying biosolids locally instead of hauling offsite as part of current operations. Mr. Kowar asked how this fit in with the long term plan with Harney Lastoka. Mr. Elkins is working with Boulder County to utilize the Harney Lastoka property as a future location for biosolids application. Further testing, planning and discussions are anticipated prior to implementation. Councilmember Stolzmann spoke in favor of this and the goal to be sustainable by the reuse of this material as well as the reduction in transportation costs and impacts. Mr. Snyder was the next presenter and explained the 2018 accomplishments for the Industrial Pretreatment Program and related activities. The City worked closely with a consultant to help prepare for a routine EPA inspection and identify areas of improvements prior to the inspection. This consulting firm is also assisting with the update and revisions to the local limits. The outcomes from this project are anticipated to require modifications to the municipal code and updates to the Significant Industrial User (SIU) Permit process. Councilmember Stolzmann asked to explain what is anticipated for us to change in the permit levels for the Industrial Users. Mr. Snyder explained it's still under evaluation with existing limits and what the consultant recommends. Mr. Kowar asked and Mr. Snyder confirmed that the updated limits will focus mostly on metals concentrations. Councilmember Stolzmann asked if any of the current users have existing pretreatment equipment of facilities. Mr. Snyder stated that a single SIU utilizes onsite pretreatment. Councilmember Stolzmann asked if there was certain times of year when elevated levels are occurring. Mr. Snyder said typically the City sees an increase in early winter around November during low flow conditions. Mr. Venette provided an update to the committee on the projects at the Water Treatment Plants. These include the changes at the plant, construction startup, improvements to operations and 2019 objectives. Mr. Venette highlighted the new pump station at the Sid Copeland Water Treatment Plant (SCWTP) and the greater efficiencies in water deliveries achieved since implementation. He continued to say that staff have been testing new means for controlling algae and some of the techniques were successful this year with good results. Councilmember Maloney asked if we used barley straw in the lake and how that worked. Mr. Venette explained that barley straw was one of the techniques used along with other 4