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-.or Melrose Country Store and Deli, Roseburg, Oregon A textile filter system (Figure 6)was installed at the Melrose Store, a small rural convenience store, in November of 1997, replacing a failed conventional drainfeld. There was very little space available for a new system, which made the textile filter an ideal solution for the store- Because groundwater is within 12 inches of the ground surface, shallow (6 in. dee final dispersal of the treated effluent. Average resul}ts or tests perthformed since November 1trenches were 997, are for shown below. As a result of the system's performance and effluent quality, the Oregon Department of Environmental Quality reduced the permit's quarterly required monitoring and testing criteria, some characteristics will be monitored every six months and some annually. Melrose Country Store Flow BODS TSS TKN NO3-n -TN FC gPd mg/L mg/L MgIL Mg /L mg/L MPN/I00 m! Septic Tank Effluent 411 207 31 Textile Filter Effluent 411 5 1 1.1 7 na 3 4 2.9 7 na Textile Filler I I I r r • Eifk Pt�g � r Septic Tank _ 4 Recimulaliml Tads dmnfidW n�Rrkte F-IM I— Figure 6: Melrose Country Store and Deli Textile Filter System Schematic Steamboat Ranger Station, Oregon , Nestled along the pristine North Umpqua River, the Steamboat Ranger Station generates wastewater from three full time residences, two bunkhouses, and seven seasonal houses(expected seasonal flow range is 1,500-5,000gpd). prior to the startup of the new effluent sewer and textile treatment system in July 1999, the ranger station had been served by a conventional gravity collection and package treatment plant since 1972. Operation and maintenance of this system was cos g more than $30,000 per year. After investigating the options all parties agreed that replacing the failing gravity system with an effluent sewer collection system and onsite treatment would result in a substantial reduction of long- term costs. The anticipated payback period is between two and three years. The effluent collection system consists of a new 1500-gallon meander septic tank at each dwelling unit to provide primary treatment. The effluent discharged from the septic tanks is conveyed through a two- inch diameter pressure line to a location away from the river for final treatment and disposal. A NTP-FLT-TR6-FSB-HL6-1 2/00 Page 8