| Polluter | Pollutants | Sources | Emissions |
|---|---|---|---|
| Mm West Covina Llc | 9 | 10 | 273,180.77 |
| Bkk Corporation, Landfill Divi | 12 | 34 | 238,354.89 |
| Valencia Water Co. / Valencia | 28 | 28 | 7,906.20 |
| Interspace/Concord Battery Cor | 7 | 10 | 5,270.53 |
| Hughes Training Inc | 12 | 12 | 1,963.70 |
| Azusa Street Dump / West Covina | 28 | 28 | 285.51 |
| Monte'S Dump / West Covina | 28 | 28 | 285.51 |
| L A Co.,Sanitation Dist, San G | 6 | 18 | 140.00 |