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I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> 4. If the dosing device is a s~phon, a maintenance inspection <br />shall be made eYery six (6) months and a report shall be filed with the <br />administrator. The siphon shall be maintained tn proper operating con- <br />dttJon. <br /> <br /> 5. If the dosing device is a pump, it shall be cast iron or <br />bronze fitted and with stainless steel screws or constructed of other <br />sound, durable and corrosion-resistant materials. <br /> <br /> 6. Where the soil treatment area is at a higher elevation <br />than.the pump, sufficient.dynamic head shall be provided for both the <br />elevation difference and friction loss. <br /> <br /> 7. Where the dosing device is a pump, an alarm device shall <br />be installed to warn of pump failure. For dwellings, there should be <br />reserve storage volume equal to one day's sewage flow based on the <br />amounts specified for number of bedrooms in Chapter 150.014C(3). For <br />other establishments, reserve capacity should be based on the nature <br />of the facility, but in no case shall it be less than twenty-five <br />percent (25%) of the daily sewage flow. <br /> <br />150.014F FINAL TREATMENT AND DISPOSAL - STANDARD SYSTEM <br /> <br />Final treatment and disposal of all sewage tank effluent shall be by <br />means of soil treatment and disposal. <br /> <br />Subd. ] SIZING <br /> <br /> 1. The required soil treatment area shall be determined by <br />number of bedrooms for dwellings and definition of "water usage" for <br />other establishments. <br /> <br /> 2. The minimum soil treatment area required for any dwelling <br />shall provide for at least two (2) bedrooms. <br /> <br /> 3. The minimum soil treatment area required for multiple <br />residential units shall consist of the sum of the areas required for <br />each individual unit. <br /> <br /> 4. Trench and bed size shall be at least as large as set <br />forth in Table <br /> <br />Table 4-] <br /> <br /> Required Soil Treatment Area in ,Square Feet <br /> Percolation Per gallon Per bedroom (a) (b) <br /> rate in of waste Beds Trenches <br /> minutes per day Depth of filter material below <br /> per inch (c) distribution pipe (c) in inc. h.es <br /> <br /> 6 12 18 24 <br /> Faster than <br /> 1/2 (d) Special Soil Treatment Required. S~e Section <br /> 1/2 to .5 (e) 0.83 170 170 1 135 ll5 105 <br /> 6 to ]5 1.27 255 255 : 205 170 155 <br /> 16 to 30 1.67 335 335 270 225 205 <br /> 31 to 45 2.00 400 400 320 265 240 <br /> 46 to 60 2.20 440 440 355 290 265 <br /> Slower than Unsuitable for iOn-Site Si'stem <br />._ .,60 I <br /> <br /> <br />