22 CAR § 111-1102
| CONDITIONS | MAXIMUM | MINIMUM | PREFERRED | ||
| Side slopes with vehicular access | 10% | 10:1 | 2.0% | 50:1 | 1 – 3% |
| Back slopes with vehicle access | 15% | 6.6:1 | 2.0% | 50:1 | 1 – 5% |
| Side slopes without vehicular access | 15% | 6.6:1 | 2.0% | 50:1 | 1 – 10% |
| Back slopes without vehicular access | 20% | 5:1 | 2.0% | 50:1 | 1 – 10% |
| Grassed athletic fields | 2% | 50:1 | 0.5% | 200:1 | 1% |
| Berms and mounds | 20% | 5:1 | 5.0% | 20:1 | 10% |
| Mowed slopes | 25% | 4:1 | ---- | ---- | < 20% |
| Unmowed grass banks | Soils natural angle of repose | < 25% | |||
| Planted slopes and beds | 10% | 10:1 | 0.5% | 200:1 | 3 – 5% |