Wood preservation facilities, general recommendations: chapter A, table 9
Table 9. Site Features Affecting the Design of a Wood Preservation Facility (all preservatives)
| Suggested degree of mitigating design/operational measures | ||
| Site features | Slight | Severe |
| Soil texture | Loam, silty loam, silty clay loam, clay loam, sandy clay | Gravel |
| Permeability (cm/h) | < 0.5 | > 50 |
| Topography (% slope) | 0-9 | > 30 |
| Soil depth to bedrock (cm) | > 200 | < 60 |
| Depth to groundwater (cm) | > 200 | < 60 |
| Flooding | None | Frequent (> once/20 years) |
| Drainage | Slow | Very rapid |
Distance to surface water body (lake or river) |
Depends on interaction with other site features (e.g. permeability of soil) |
Directly adjacent |
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