Section 62-03.1-03-06 - Soil borings When soil borings are required, they must be made as follows:
1. Each boring or excavation must be made to a depth at least three feet [0.91 meters] deeper than the bottom of the proposed system or until bedrock or a water table is encountered, whichever is less. 2. A soil texture description must be recorded by depth and notations made where texture changes occur. 3. Particular effort must be made to determine the highest known water table by recording the first occurrence of mottling observed in the hole, or if mottling is not encountered, the open holes in clay or loam soils must be observed after standing undisturbed a minimum of sixteen hours, and depth to standing water, if present, must be measured. N.D. Admin Code 62-03.1-03-06
General Authority: NDCC 43-18-09
Law Implemented: NDCC 43-18-09