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<br />Three areas the county can look at: design, installation and long term maintenance. <br /> <br />Not much long-term maintenance is happening in the mountains right now. <br /> <br />The best system so far is a septic tank with a circulating sand filter. The <br />disadvantage is more piping is required with a potential for breaks, etc. <br /> <br />Water Quality Control Commission (WQCC) website - report on risk management. <br /> <br />National Nutrient Criteria: Estimates numbers for nitrates in streams and ground <br />water. Russ Clayshulte on board. Required to be in place by 2003. This would <br />view independent septic systems as point sources. <br /> <br />Bear Creek Watershed Association nitrate numbers for last year were at 140,000 Ibs <br />for Bear Creek and 15,000 Ibs. for Turkey Creek. <br /> <br />The TMDL study being done for the South Platte will estimate nitrate standard. First <br />such effort in Colorado. <br /> <br />Thornton has several large lot developments being proposed that will be on septic <br />systems: <br /> <br />· 500-800 lots with 1.1 acre and up, to get past definition of "urban." <br /> <br />· Ad Hoc large lot task force has been set up by DRCOG, and is proposing septic <br />system management plan. <br /> <br />· 6% of people in the 8-county DRCOG region are currently on ISDS - <br />approximately 54,000 households. It is anticipated there will be 78,000-100,000 <br />households on septic systems by 2020. <br /> <br />· Some new technologies are being developed. <br /> <br />Wetland technology, applied on a small scale, has been successful - though not <br />always. <br /> <br />Tom Bennett with the State has been a champion of wetlands systems, but isn't <br />given the resource support from State to move this ahead. <br /> <br />Jeffco is partnering with CSM to examine alternative advanced treatment systems. <br />Rocky Mountain Treatment Center is being established. Other states/regions have <br />such research systems (Wisconsin and others). <br /> <br />The State has some problems with evaporative and possibly wetland systems due <br />to water rights issues. <br /> <br />Marshdale effluent is being trucked to Conifer for treatment? <br /> <br />There is concern about water not recharging into the area it's withdrawn from, in <br />cases where sewage hauling is occurring. <br /> <br />MGWRS Steering Committee Meeting <br />February 18,2000 <br /> <br />Page <br />