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OWTS.No basement,footing or.surface drainage or discharge from water <br /> softener,iron filters,pool filters,or water treatment systems shall be <br /> permitted to enter any part of the OWTS. <br /> 1.10.2 The OWTS shall consist of a building sewer,a septic tank,distribution box, <br /> and a drainage system.Holding tank systems,alternative treatment <br /> systems,and lift or pump stations may also be included in an OWTS. <br /> Alternative treatment systems and engineered systems will be evaluated on <br /> their specific design. <br /> a) Where soil porosity and available land area permit,the drainage system <br /> shall consist of a subsurface horizontal leaching field. <br /> b) Where soil porosity and available land area do not permit the use of a <br /> shallow subsurface horizontal leaching field,and an adequate <br /> absorption soil stratum can be found at a greater depth without <br /> endangering ground or surface waters,the effluent may,in combination <br /> with a shallow subsurface horizontal leaching field,be discharged into <br /> one or more sumps or seepage pits,to a maximum depth of 2S feet. <br /> c) Alternative treatment systems or engineered systems may be proposed <br /> in lieu of a standard septic system.The alternative treatment system or <br /> engineered system must be designed by a Qualified Professional,as <br /> defined in the Water Quality Control Policy for Siting,Design,Operation, <br /> and Maintenance Of Onsite Wastewater Treatment Systems as adopted <br /> by the State Water Resources Control Board on June 19,2012,and must <br /> meet the discharge requirements set by the Environmental Health <br /> Department or the Central Valley Regional Water Quality Control Board <br /> for the particular system or plant. <br /> d) Holding tank systems,alternative treatment systems and engineered <br /> systems are required to obtain an annual operating permit from the <br /> Environmental Health Department when monitoring,sampling,and <br /> reporting is required,or as determined necessary by the Director of <br /> Environmental Health.Other OWTS may be required to obtain an annual <br /> operating permit,as determined necessary by the Director of <br /> Environmental Health. <br /> e) The dispersal field shall maintain the minimum distance from <br /> groundwater as noted in the table below. <br /> Table 1.10.2-Minimum Soil Depth from the Bottom of the Dispersal System to <br /> Groundwater <br /> Percolation Rate Minimum Depth <br /> 51 MPI Engineered System Required <br /> 1 MPI 5 5 MPI Twenty(20)Feet' <br /> 5 MPI5 30 MPI Eight(8)Feet' <br /> 30 MPI< 12( ;:�e(i)Foet <br /> >120 MPI Engineered System Required <br /> MPI=minutes per inch <br /> 'Notes Or as mitigated by the system design or enhancement <br /> EHD 42-014 Paso 5 c1 41, OWTS Standards 1:2017 <br /> 110111111 <br /> �A[ .RVC <br />