| Post-2003 Preservative Types by Product | ||||||
| USE CATEGORY | SERVICE CONDITIONS | COMMODITY | FRACTION OF TREATED PRODUCT | |||
| All Water-Borne | Arsenical | Copper | Other | |||
| UC3B | Exterior construction Above Ground Uncoated or poor water run-off | Sawn Product | 59.4% | 0.0% | 55.2% | 4.1% |
| Plywood | 0.4% | 0.1% | 0.3% | 0.0% | ||
| UC4A | Ground contact or fresh water Non-critical components | Sawn Product | 17.1% | 0.2% | 16.9% | 0.0% |
| Posts | 1.6% | 0.6% | 1.0% | 0.0% | ||
| Plywood | 0.4% | 0.1% | 0.3% | 0.0% | ||
| UC4B | Ground contact or fresh water Critical components or difficult replacement | Sawn Product | 9.5% | 0.6% | 8.9% | 0.0% |
| Posts | 0.1% | 0.1% | 0.0% | 0.0% | ||
| Plywood | 0.2% | 0.1% | 0.1% | 0.0% | ||
| UC4C | Ground contact or fresh water Critical structural components | Sawn Product | 0.9% | 0.1% | 0.7% | 0.0% |
| Round piling | 2.6% | 2.6% | 0.0% | 0.0% | ||
| Posts | 0.0% | 0.0% | 0.0% | 0.0% | ||
| UC 4A, B, & C | Ground Contact | Poles | 6.4% | 6.4% | 0.0% | 0.0% |
| Crossties | 0.0% | 0.0% | 0.0% | 0.0% | ||
| UC5A | Salt or brackish water and adjacent mud zone Northern waters | Sawn Product | 0.0% | 0.0% | 0.0% | 0.0% |
| Piles | 0.3% | 0.3% | 0.0% | 0.0% | ||
| UC5B | Salt or brackish water and adjacent mud zone NJ to GA, south of SanFran | Sawn Product | 0.0% | 0.0% | 0.0% | 0.0% |
| Piles | 0.4% | 0.4% | 0.0% | 0.0% | ||
| UC5C | Salt or brackish water and adjacent mud zone South of GA, Gulf Coast, Hawaii, and Puerto Rico | Sawn Product | 0.2% | 0.2% | 0.0% | 0.0% |
| Piles | 0.4% | 0.4% | 0.0% | 0.0% | ||
| UC 5A, B, & C | Marine Exposure | Plywood | 0.1% | 0.1% | 0.0% | 0.0% |
| Totals | 100.0% | 12.4% | 83.4% | 4.1% | ||