Quick Answer
CONVERSION POSSIBLE: It is technically possible to convert a mound system to a conventional one, but it requires careful consideration and a well-planned approach to ensure proper function and minimize potential issues.
Assessing the Mound System
Before conversion, assess the existing mound system’s soil conditions, water table levels, and system performance. Check for signs of failure, such as ponding, odors, or effluent leakage. This evaluation will help determine the feasibility of conversion and identify potential modifications needed to prevent future problems.
Designing the Conventional System
Design the conventional system to accommodate the existing mound’s footprint and soil conditions. Consider installing a new drainfield with a depth and spacing suitable for the site’s soil characteristics and loading. For example, a conventional drainfield for a 2-bedroom household might require a minimum of 4-6 trenches, each 4-6 feet deep and spaced 3-4 feet apart, with a total trench length of 100-150 feet.
Installation and Testing
During installation, ensure the new drainfield is properly bedded and graded to prevent settling or erosion. Install a new septic tank or modify the existing one to accommodate the conventional system’s requirements. After completion, test the system to verify its ability to handle the wastewater load and prevent failures. This may involve performing a hydraulic load test or a soil percolation test to ensure the drainfield is functioning correctly.
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