Orange County NC Website
Browse       Search
Class III Systems - Individual spray irrigation systems and <br />sand - filter discharging systems of any size fall under the <br />jurisdiction of DEM, which requires that they be repermitted <br />every five years. Local boards of health may have the <br />opportunity to impose design standards more strict than DEM's <br />.normal standards. All siting, design and construction <br />supervision must be done by a licensed professional engineer. <br />DEM requires certified operators for non - residential use of <br />these systems. On sand filter discharging system permit <br />renewals DEM sets effluent requirements but does not require <br />monitoring, rendering the effluent requirements essentially <br />meaningless. On new sand filter systems, DEM sets effluent <br />standards and monitoring requirements. DEM theoretically <br />makes yearly inspections of non - residential spray.irrigation <br />systems and all newer discharging systems. DEM sometimes, <br />sets groundwater monitoring and reporting requirements on <br />spray.irrigation systems, but this is a somewhat inconsistent <br />practice. <br />Class IV Systems - Private cluster systems usin low pressure <br />pipe nitrification fields are permitted by loca health <br />de artments with design approval by DEH. System design, <br />suing, and supervision of construction must be performed by <br />a licensed professional engineer. At the present time, these <br />systems may or may not have a requirement for a certified <br />waste treatment operator. There are feat regulations dealing <br />with actual details of operation, maintenance or monitoring <br />of the systems. <br />Class V Systems - All public cluster systems are permitted by <br />DEM under the authority of the NC Utilities Commission. The <br />primary concern of the Utilities Commission is the financial <br />solvency of the system owner and the rates which the owner <br />must charge a customer to insure a maximum allowable profit <br />margin. All regulatory matters of an environmental or <br />engineering nature, including permit regulations, design, <br />etc., are delegated to DEM. As with all DEM approved <br />systems, all design, siting, and construction supervision <br />must be performed by a licensed professional engineer. <br />Maintenance requirements vary from system to system, but the <br />operator must be a licensed waste treatment operator. DEM <br />may require the installation of groundwater monitoring wells <br />and reporting of groundwater analysis, but this practice is <br />inconsistent. Systems must be repermitted every five years, <br />and DEM theoretically makes yearly site inspections. <br />Class VI Systems - Discharging package plants and discharging <br />cluster sand filter systems are regulated by DEM. All system <br />design is required to be performed by a licensed professional <br />engineer. For discharging package plants, DEM sets effluent <br />limitations on certain pollutants and pollutant indicators <br />including nitrogen, phosphorus, oxygen demand, dissolved <br />oxygen, fecal or total coliform and total suspended solids. <br />13 <br />