The geotechnical report shall consider rising water potential as it affects the proposed development.

Rising water is any water that daylights as seepage, springs or flows at the earth surface. It can be the result of landscape watering, natural rainfall and runoff or rising ground water table. It generally occurs after grading when geologic structure in combination with artificial fill and landscape water produce daylighting of subsurface water.

All areas of fill over low permeability bedrock shall be evaluated for rising water potential.

Any geologic boundary (i.e. faults, formational contacts, etc.) shall be evaluated for rising water.

Subdrains shall be designed and specifications presented for control of rising water. They should be discussed and described in the geotechnical report and shown on the grading.

The geotechnical report shall include an analysis of nuisance water drywells. Minimum report guidelines are as follows:

Permeability of soils and bedrock should be determined by on-site percolation tests.

The percolation tests should take into account the interval where nuisance water will be discharged. Testing outside the injection zone is not applicable.

Barriers to ground water flow should be identified by subsurface exploration.

Depth to bedrock and ground water should be determined. This can be achieved by reference documents in deep alluvial or ground water areas.