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FROM : WASTEWATER PLANT <br />Memo <br />FAX N0. : 903 78S 3010 Feb. 18 2003 03:11PM P3 <br />Ta HERBERT H.CAMPBELL <br />Fronu JAMES P. HINKLE <br />Date: 2/18/2003 <br />Re: PRICE DIFFERENCE JUSTIFICATION <br />I. Explanation of Cost Difference <br />A. Sugarland TX Versus Paris TX <br />1.Sugeriand has fixed surface aeration similar to floating aerators with rectangular aeration basins <br />and digestion basins, which are cheaper to maintain than Paris's fixed rotating flock discs for surface <br />aeration. <br />2.Sugedand has a trickling filter and chemical pretreatment (Paris also has these two items). <br />3.A sludge belt press is used for sludge removal and the sludge is land applied by contractor, which <br />is much more expensive than our ATAD system and overland spraying of sludge using Paris WWTP <br />personnel. <br />4.Sugadand Chlorinates and Dechlorinates as does Paris. <br />S.Sugarland is close to Houston TX and has to pay personnel at a higher rate of pay to keep well - <br />trained employees on site_ (Parrs is one of the largest plants in the area and has very little competition <br />for personnel.) <br />Sugarland $1.53J10009allons Versus Paris $1.1511000gallons <br />B. San Marcos TX Versus Paris TX. <br />1. San Marcos has fine bubble diffusers for their aeration basin, which is more efficient and less <br />maintenance intensive than Fans s twu aCrativn bezino with fixed flnr..le rntating surface aerators <br />2. San Marcos also has two primary clarifiers for raw sludge removal, which are more cx>St effective <br />than our screening system and Mower. <br />3. San Marcos has an ATAD system and feeds chemicals for odor corrosion control as Paris does. <br />4. They have a filter on their effluent and sale reclaimed water back to industry. Paris does not. <br />5. They do not have chemical cost on their effluent because of UV light disinfection. Paris uses <br />chlorine and sulfur dioxide. <br />