Table 1.
Contaminant | RDEC limit | Levels found | Depth | Exceedance |
---|---|---|---|---|
Cyanide | 200 mg/kg | 216 mg/kg
482 mg/kg |
0-6”
2-4’ |
1.1 × limit
2.4 × limit |
Arsenic | 7.0 mg/kg | 49.8 mg/kg
131 mg/kg |
0-6”
0-2’ |
7 × limit
19 × limit |
Lead | 150 mg/kg | 1,220 mg/kg
5,600 mg/kg |
0-6”
0-2’ |
8 × limit
37 × limit |
Benzo[a]pyrene | 0.4 mg/kg | 114 mg/kg
212 mg/kg |
0-6”
0-2’ |
285 × limit
530 × limit |
Note: RDEC is the Residential Direct Exposure Criteria established by the Rhode Island Department of Environmental Management.