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FROM ORENCO SYSTEMS , INC . <br /> WASTEWATER SOLUTIONS <br /> S'- U; D' Y <br /> An Affordable Wastewater Collection and Treatment Solution for Developments` <br /> New Development <br /> Market <br /> Problem 11111- <br /> ' l „ ■ <br /> Bethel Heights had to make sewer connections available <br /> to widely dispersed new development to avoid de-annexation of properties HEIGHTS, <br /> and loss of tax revenue.Treatment had to meet strict phosphorus-removal gETHEL <br /> BETHEL <br /> requirements. ARKANSAS <br /> Solution Bethel Heights installed an Orence Effluent Sewer,which <br /> allowed widely dispersed properties to be connected as developed,and an <br /> AdvanTex Treatment System coupled with drip irrigation to fulfill nutrient- <br /> removal requirements. <br /> The small city of Bethel Heights had always relied on septic tanks <br /> for wastewater treatment.However,developers wanted to build <br /> more densely than septic tanks allowed.In 1999,the state passed a <br /> law allowing property owners to de-annex from one city and annex Design Parameters <br /> to another if wastewater set-vice or other essential utilities were not • 1,800+people <br /> available to them.Bethel Heights began facing de-annexations and loss •400 households(as of 2007) <br /> •Several businesses(as of 2007) <br /> of tax revenue,which threatened its very existence. . 180,000 gpd at bulldout <br /> The town decided to build a municipal wastewater system.Planners S00 tart <br /> Up Date <br /> faced several constraints: Total Project Cost <br /> Hilly terrain and the dispersed nature of new development would make $1.3 million <br /> gravity collection expensive. Funding Source <br /> • On-lot packages paid for/owned by <br /> The system had to be available quickly before developers de-annexed. homeowners-Treatment system paid for by 30-year bond <br /> Restrictions on phosphorus content of effluent made surface discharge and connection fees <br /> • <br /> unfeasible.Karst geology and a concentration of poultry farms had led Operations funded by user fees:_Residential:$35tmo plus metered usage <br /> to a designation as a"nutrient surplus"area. --Commercial:$5250/mo plus metered <br /> usage <br /> The city's engineer proposed that the best solution would be an effluent primary Treatment <br /> sewer collection system,followed by an AdvanTex textile treatment . On-lot 1,500-gal septic tank with Orenco <br /> system and dispersal via drip irrigation.The small-diameter,shallow STEP collection package <br /> force mains of an effluent sewer system would be relatively inexpensive •Righ miles of 2-to 4-in collection <br /> to install over the hilly terrain and the long distances to the treatment Secondary Treatment <br /> system. 2 treatment sites at bulldout,ea,with 36 <br /> I Because the force mains would require neither deep excavations nor lift AdvanTex AX100 recirculating filter pods <br /> •Drip Irrigation of 8-acre hayfield <br /> stations,Bethel Heights could install the initial transport lines quickly, AdvanTex Effluent Duality <br /> with a smaller up-front investment than a gravity system would require. 10 mgiL ROD and IRS <br /> Owners of new homes and businesses connecting to the system could .5 mg1L NH3 <br /> h <br /> rvcs-t <br /> 020090renco Systems®Inc, Re 1.0,(D03109 <br /> Page t of 2 <br /> f <br />