2015.08.11 CC Minutes - Laserfiche WebLink

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August 11, 2015 Page 2 of 4 + EDC Minutes from June 3, 2015. Special Order of Business None. Consent Agenda 1. Consideration of Quotes for City Project 15-2, 2015 Seal Coating. 2. Consideration of Quotes for City Project 15-9 2015 Treatment Plant #1 Paint Package. 3. Consideration to Approve Payment for Vouchers 14951 to 149564 for a total of $765,023.84 and July Purchasing Card Report. Motion by Councilmember Burg, seconded by Councilmember Bauman to approve the Consent Agenda as presented. 5 Ayes, 0 Mays - Motion Carried Public Hearim None Council Business 1. Consideration of a Master Services Agreement with Barr Engineering and Approval of Work Order 1 for the Treatability Testing of 1,4 Dioxane. City Manager Lotter reported since being authorized in June 2015, Barr has been engaged in evaluating and screening the broad range of potential technologies that may be applicable for treatment of 1,4 -dioxane. That work has included literature reviews, collection and evaluation of information from teclmnology vendors, evaluation of operating facilities, and bench scale testing. That screening process has identified two specific technologies that warrant detailed treatability testing in a pilot scale setting at the City's Water Treatment Plant number 1(WTP 1). Barr work to date has also involved the planning of treatability tests, including design of the test protocols and definition of the equipment that would be required Barr's work to date is currently being assembled in a report that will be titled "Technology Screening Report and Treatability Testing Work Plan' (the Report). That report will be submitted in early September for City review and acceptance. Greg Kiel, Barr Engineering, discussed the pilot testing that he would be conducting on the City's water supply. He provided comment on the work that has been completed since June of 2015 and noted the technologies available to treat 1,4 dioxane. He explained the requirements the City's water treatment plant would have to have in place in order to properly screen for 1,4 dioxane. He reported the City would have to set targets or goals for water treatment levels. He then identified a list of minimum criteria and discussed how the City would have to manage the formation of by-products. He noted that he had investigated 18 technology options available to treat 1,4 dioxane. He commented that in reviewing these technologies he also examined if each could handle treating the size and scale ofthe City's water supply. He encotlraged the Council consider the use of the ozone peroxide or UV peroxide technology, which was similar to the treatment plant in Tucson, Arizona. He described how the ozone peroxide system works to eliminate 1,4 dioxane from contaminated water. He discussed the proposed phases for the pilot testing, in addition to addling the timeline. He commented that Well No. 3 would be the best location for the pilot testing. He then reviewed the costs of the lab services. City Manager Lotter explained that Work Order Number 1 under the proposed Master Services Agreement Special Order of Business Consent Agenda 1. Consideration ofQuotes for City Project 15-2, 2015 Seal Coating. 2. Quotes Project 15-9 2015 Treatment Plant #I Paint Package. 3. Payment Vouchers 14951 to 149564 for a total of $765,023.84 and July Purchasing Card Report. Public Hearing Council Business 1. Consideration of a Master Services Agr. with Barr Engineering and Approval of Work Order 1 for the Treatability Testing of 1,4 Dioxane.