Table 7.
Example, indoor air and soil vapor screening levels for TPH based on default, carbon range compositions for gasolines and middle distillates noted in text.
| Fuel Type | Weighted RfC (µg/m3) | Indoor Air 1 | Subslab Soil Vapor 2 | ||
|---|---|---|---|---|---|
| Residential (µg/m3) | Commercial/Industrial (µg/m3) | Residential (µg/m3) | Commercial/Industrial (µg/m3) | ||
| Gasolines | 279 | 290 | 410 | 290,000 | 810,000 |
| Middle Distillates | 130 | 140 | 190 | 140,000 | 380,000 |
1 Based on noncancer Hazard Quotient of 1.0; 2 Based on indoor air-soil vapor (subslab) attenuation factors of 0.001 for residential structures and 0.0005 for commercial/industrial structures (for example only) (after [8]).