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What shall the lateral spacing be for emitter lines placed on slopes exceeding 20%?

  1. 2 feet

  2. 3 feet

  3. 4 feet

  4. 5 feet

The correct answer is: 3 feet

The lateral spacing for emitter lines placed on slopes exceeding 20% should be set at 3 feet. This regulation is in place because steeper slopes can lead to rapid water movement, which may affect the distribution and effectiveness of the system. Spacing emitter lines appropriately helps ensure that water is adequately absorbed and minimizes issues related to erosion or runoff that could arise from too close or incorrectly spaced emitters. This practice helps protect the integrity of the soil absorption system, ensuring that each emitter can function efficiently. The specific spacing of 3 feet strikes a balance between water distribution and soil absorption capacity, making it an effective choice for managing wastewater on steep slopes.