Which of the following is not true regarding special design requirements at certain sites?

The statement regarding alternative lateral fields not being allowed is not true because specific regulations often permit alternative systems for lateral fields under certain conditions. These alternatives may be designed to address unique site challenges such as limited space, proximity to water bodies, or poor soil conditions. The use of alternative systems provides flexibility and can help in meeting the environmental protection goals while effectively managing wastewater.

Two septic tanks in series, separate laundry, and gray water beds, and dosing systems are recognized practices that serve various functions in improving effluent treatment and managing water flow. Two tanks can enhance settling and treatment, separate systems for laundry and gray water can optimize treatment efficiency, and dosing systems are essential for efficient distribution of effluent when gravity flow is inadequate. Each of these practices has specific regulatory support and application in designed septic systems.