| Value | Category | Cases | |
|---|---|---|---|
| 1 | Local authority dumping site | 462 |
73.7%
|
| 2 | Private dumping site | 76 |
12.1%
|
| 3 | Throw randomly | 13 |
2.1%
|
| 4 | Others | 47 |
7.5%
|
| Sysmiss | 29 |