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, , <br /> PURCHASING & INTERNAL SERVICES MEMORANDUM <br /> #93 - 33 <br /> April 8 , 1993 <br /> T0: James C. Bacon, Jr . , City Manager <br /> FROM: Deborah M. Perry, Purchasing Supervisord"� <br /> SUBJECT: WATER TREATMENT CHEMICAL BID <br /> Attached you will find a bid summary for Water Treatment <br /> Chemicals . <br /> The price of most of the chemicals remained stable and for <br /> some chemicals such as; alum, carbon, carbon dioxide , <br /> polymer , potassium permanganate , sodium chlorite and sodium <br /> silicofluoride , the price has gone down compared to last <br /> year . For example , the chemical we use the most of is lime . <br /> Lime went down in price by $1 . 50 per ton as compared with <br /> last year ' s cost . Based on the estimated annual usage of <br /> 7000 tons that is a decrease of $10 , 500 . <br /> It is the staff recommendation to accept the low bids listed <br /> on Exhibit A for each of the Water Treatment Chemicals for <br /> May 1 , 1993 - April 30 , 1994 as follows : <br />