Table 4.
Comparison of measured results and model estimates for Trials A, B, and D
| Trial A (mg/m3) | Trial B (mg/m3) | Trial D (mg/m3) | ||
|---|---|---|---|---|
| Measured air concentrations | THC analyzer | 4.4 | 1.9 | 2.2 |
| VOC monitor right | 3.9 | 1.2 | 2.0 | |
| VOC monitor middle | 2.8 | 0.8 | 0.3 | |
| VOC monitor left | 3.1 | 0.9 | 1.0 | |
| Model estimates | TRA | 2032 | 1049 | 1483 |
| EGRET | 1354 | 699 | 988 | |
| WMB | 118 | 80.6 | 217 | |
| CS INST (instantaneous rate) | 161 | 109 | 205 | |
| CS CONST (constant rate) | 148 | 98 | 177 | |
| CS LANG (evaporation, Langmuir isotherm) | 137 | 93 | 160 | |
| CS THIB (evaporation, Thibodeaux isotherm) | 55 | 46 | 66 | |
| EFAST | 3.9 | 2.6 | 4.9 | |
| ART (median) | 16 | 16 | 26 |
TRA targeted risk assessment tool, EGRET European Solvents Industry Group (ESIG) Generic Exposure Scenario (GES) Risk and Exposure Tool, WMB well mixed box model constant generation rate, CS consumer exposure models (also known as ConsExpo), EFAST exposure and fate assessment screening tool, ART advanced reach tool