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The length of the level spreader should be determined by the type of filter area and the design flow:
The length of the level spreader should be determined by the type of filter area and the design flow:
* 1.4 m of level spreader length per every 0.01 m³/s of inflow for discharges to a [[filter strip]] or turf conservation area;
* 1.4 m of level spreader length per every 0.01 m³/s of inflow for discharges to a [[filter strip]] or grassed area;
* 4.3 m of level spreader length per every 0.01 m³/s of inflow when the spreader discharges to a forested conservation area.
* 4.3 m of level spreader length per every 0.01 m³/s of inflow when the spreader discharges to a forested conservation area.
* The minimum level spreader length is 4 m and the maximum is 40 m.
* The minimum level spreader length is 4 m and the maximum is 40 m.