Heavy metals | 1982-1986 (TownshipN = 283) | TEPA guidelines | NYSDEC guidelines | ||||
---|---|---|---|---|---|---|---|
 | Q1 | Median | Q3 | Normal land-use | Agriculture land-use | Unrestricted use | Residential use |
As (mg/kg) | 3.18 | 6.08 | 7.70 | 60 | - | 0.11 | 0.21 |
Cd (mg/kg) | 0.03 | 0.08 | 0.15 | 20 | 5 | 0.43 | 0.86 |
Cr (mg/kg)c | < 0.01 | 0.27 | 1.23 | 250 | - | 29 | 58 |
Cu (mg/kg) | 3.76 | 5.98 | 9.67 | 400 | 200 | 270 | 270 |
Pb (mg/kg) | 6.25 | 8.09 | 11.06 | 2000 | 500 | 200 | 400 |
Hg (mg/kg) | 0.09 | 0.15 | 0.23 | 20 | 5 | - | - |
Ni (mg/kg) | 1.22 | 2.07 | 3.29 | 200 | - | 72 | 140 |
Zn (mg/kg) | 7.35 | 10.17 | 14.12 | 2000 | 600 | 1100 | 2200 |