| AttachedComponent | Contains info about attached component. |
| BuildUpData | Data needed for different build-up methods. |
| EMCData | Data for Event Mean Concentration (EMC) method. |
| SWQPollutant | Pollutant used in computations |
| SWQPollutantData | Data for SWQ pollutant model |
| WashOffData | Data needed for wash-off formula using power law dependence on rainfall intensity. |
| IAttachedComponent | Contains info about attached component. |
| IBuildUpData | Data needed for different build-up methods. |
| IEMCData | Data for Event Mean Concentration (EMC) method. |
| IWashOffData | Data needed for wash-off formula using power law dependence on rainfall intensity. |
| BuildUpTypes | Build-up types |
| SurfaceLoadTypes | Surface load types |
| SWQModelTypes | SWQ model types. |