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11/28/23,9:12 AM Item Coversheet <br /> Public Works <br /> DATE: 11/22/2023 <br /> MEMO: 2023-120 <br /> TO: Honorable Mayor Moore Wolfe and City Council Members <br /> FROM: Scot Wrighton,City Manager <br /> Matthew C.Newell,P.E.,Public Works Director <br /> SUBJECT: <br /> Resolution Accepting the Bid and Authorizing the Execution of a Purchase Order Furnishing Water Treatment Chemicals <br /> —Alum City Project—PUR2023-006 <br /> SUMMARY RECOMMENDATION: <br /> Staff recommends awarding Purchase Orders to the low bidders meeting specifications listed on Exhibit A for each of the water <br /> treatment chemicals. <br /> BACKGROUND: <br /> The following is a list of the chemicals and how they are used in the water purification process. <br /> Alum—to coagulate;clarifying agent <br /> Carbon—used for taste and odor control;control of atrazine and other compounds <br /> Carbon Dioxide—lowers the pH level <br /> Chlorine—primary disinfectant <br /> Hydrofluorosilicic Acid—reduces tooth decay <br /> Lime—water softening agent <br /> Sodium Chlorite—disinfectant;used for taste and odor control <br /> Sodium Hexametaphosphate—used to counteract calcium hydroxide;prevents scaling;filter protection <br /> The low bidders meeting specifications have provided the City with the necessary bonding,NSF and AWWA certifications <br /> required for their chemicals. <br /> The bid tabulation is attached in Exhibit A. The bid documents provided the bidder with a 12-month Purchase Order. The overall <br /> cost increase of the chemical stabilized from the approximate 35%increase in 2023,the approximate percent change from the <br /> current cost is below: <br /> Alum—8%increase <br /> Carbon—4%increase <br /> Carbon Dioxide—2%increase <br /> Chlorine— 19%decrease <br /> Hydrofluorosilicic Acid—3.5 %decrease <br /> Lime— 15%increase <br /> Sodium Chloride—0.5 %decrease <br /> Sodium Chlorite—2.5 %increase <br /> Sodium Hexametaphosphate—78%decrease <br /> POTENTIAL OBJECTIONS: There are no known objections to this resolution or bid award. <br /> INPUT FROM OTHER SOURCES: Purchasing Department <br /> https://decatur.novusagenda.com/agendaweb/CoverSheet.aspx?ItemID=4682 1/2 <br />