Table 3. Summary of lead content of environmental samples.
| Item | Samples tested | Lead concentration | Hazard limita |
|---|---|---|---|
| Soil | 2 | < 10–93 ppm | 420 ppm |
| Paint chips | 10 | 530–120 000 ppm | 5000 ppm |
| Dust wipes | 7 | < 10–110 µg/ft² | 100 µg/ft² |
| Canned tuna | 2 | 0.14–0.16 ppm | 0.2 ppm |
| Candy wrapper | 1 | < 42 ppm | 0 ppm |
| Petrol | 2 | 4.6–24.6 ppm | 13 ppm |
| Motor oil | 2 | 13.8–15.4 ppm | (not regulated) |
| Fishing weights | 3 | 89–100% | (not regulated) |
a Current hazard limits as determined by applicable United States of America regulatory agencies (Department of Housing and Urban Development, Environmental Protection Agency, Centers for Disease Control and Prevention, Food and Drug Administration and Department of Agriculture) or Philippine regulatory agency (e.g. Department of Environment and Natural Resources for petrol).