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PAGE 3 <br /> a ; , .0 <br /> Wastewater Treatment r s ` i1 <br /> The Mason Farm Wastewater Treatment Plant is next to Morgan Creek near the University ' s Finley Golf Course . The <br /> Mason Farm plant uses biological , chemical and physical processes to cleanse wastewater and return highly treated <br /> water to the natural environment of Morgan Creek . OWASA is required to operate the treatment plant in accord with a <br /> permit issued by the NC Division of Water Quality based on State and Federal clean water standards . <br /> Capacity of the Wastewater Treatment Plant 12 million .gallons per day ( average for a month <br /> Total wastewater treated in 2000 - 01 3 . 1 billion gallons <br /> Average gallons of wastewater treated per day 8 . 5 million gallons <br /> Highest daily volume of wastewater treated 17 . 8 million gallons on March 30th due to <br /> intense rains on March 29 and 30 <br /> Volume of biosolids recycled ( on farm land ) 1 , 290 tons ( dry weight of solids ) <br /> Definitions <br /> Ammonia - - A compound of nitrogen and hydrogen that exerts a Fecal coliform bacteria - - Types of bacteria that are present <br /> demand for oxygen in water, acts as a nutrient for plant life in in the intestines of people , dogs , cats and other animals . <br /> surface waters and can be toxic to fish and other aquatic life . <br /> Phosphorus - - An element that acts as a nutrient for plant life <br /> Carbonaceous biochemical oxygen demand ( CBOD ) -- a mea - such as algae in creeks and lakes . <br /> sure of the carbon - containing substances remaining in treated <br /> water that may exert a demand for oxygen when released into a Total suspended solids - - A measure of small particles re - <br /> stream . The lower the CBOD , the less likely there is to be an maining in treated wastewater. Excludes dissolved substances . <br /> appreciable oxygen demand placed on the receiving waters . <br /> Adequate dissolved oxygen is important for fish and other aquatic Wastewater- - Water after it has been used for household , busi - <br /> life , ness and other purposes . In our community, wastewater flows <br /> from private plumbing systems to public sanitary sewers and <br /> Chlorine - - the disinfecting element in liquid bleach ( sodium hy - ' then to a treatment plant . Wastewater is distinguished from <br /> pochlorite ) , which is used to kill microorganisms in treated waste - stormwater, which flows to creeks and rivers through a sepa - <br /> water, rate network of ditches , swales , catch basins and pipes . <br /> Treated Wastewater Quality <br /> Measure Unit of measurement Maximum allowed Actual for 2000 - 01 <br /> Carbonaceous biochemical summer : 4 summer : 3 . 2 <br /> oxygen demand ( CBOD ) winter : 8 winter : 4 . 7 <br /> Total Suspended Solids milligrams 30 5 . 0 <br /> Phosphorus per liter 0 . 6 0 . 5 <br /> Ammonia ! summer : 2 summer : 0 . 2 <br /> j winter : 4 winter : 1 . 0 <br /> Noncompliance events at the Mason Farm Wastewater Treatment Plant <br /> �] <br /> Month Measure for which the limit was exceeded Comments <br /> March Chlorine remaining in treated wastewater . Resulted from a temporary disruption of the chlorine <br /> removal process . <br /> Carbonaceous biochemical oxygen demand ( CBOD ) . Minimal or no effect on Morgan Creek . <br /> April - - - - <br /> Average daily flow of wastewater exceeded monthly limit . Due to rainstorms which added to wastewater volume , <br /> May Chlorine remaining in treated wastewater . <br /> Carbonaceous biochemical oxygen demand ( CBOD ) . Minimal or no effect on Morgan Creek . <br /> June Carbonaceous biochemical oxygen demand ( CBOD ) . <br /> General Comments : <br /> No fish kills or other significant downstream impacts from the above events are known . <br /> There were no noncompliance events from July, 2000 through February, 2001 . <br />