| Source Category (Figure 5) | PCP | Sewage Sludge | Particulate Depostion | Indust. Wood Combust. | Diesel Emissions | Unl. Gas Emissions |
| PCP | 1.00 | |||||
| Sewage Sludge | 0.99 | 1.00 | ||||
| Particulate Depostion | 0.99 | 1.00 | 1.00 | |||
| Industrial Wood Combustion | 0.90 | 0.89 | 0.91 | 1.00 | ||
| Diesel Emissions | 0.99 | 0.97 | 0.97 | 0.88 | 1.00 | |
| Unleaded Gas Emissions | 1.00 | 1.00 | 1.00 | 0.92 | 0.97 | 1.00 |