Table 3. Basic statistics of runoff pollution EMCs and EPLs in all storm events.
Type of land use | Statistics | COD | TSS | TN | TP | NH 4 + -N | Fe | Zn | Cu |
---|---|---|---|---|---|---|---|---|---|
DLS mix of commercial and residential EMCs | Mean | 302.81 | 367.19 | 16.69 | 3.17 | 5.52 | 1.56 | 0.33 | ------- |
Standard deviation | 151.35 | 173.04 | 12.88 | 2.22 | 2.66 | 0.95 | 0.15 | ------- | |
Maximum | 567.11 | 708.40 | 39.05 | 7.09 | 9.13 | 2.98 | 0.57 | ------- | |
Minimum | 103.25 | 141.03 | 3.49 | 0.42 | 1.35 | 0.12 | 0.11 | ------- | |
NS industrial zone EMCs | Mean | 221.45 | 298.11 | 8.98 | 2.12 | 4.27 | 4.27 | 3.50 | 0.31 |
Standard deviation | 126.38 | 168.07 | 4.69 | 1.18 | 2.10 | 1.88 | 1.40 | 0.12 | |
Maximum | 486.22 | 651.30 | 16.65 | 4.06 | 7.49 | 6.78 | 5.12 | 0.47 | |
Minimum | 81.93 | 96.93 | 2.46 | 0.67 | 0.99 | 1.23 | 1.57 | 0.11 | |
TS parking lot EMCs | Mean | 67.94 | 86.72 | 2.33 | 1.02 | 0.85 | 0.37 | ------- | ------- |
Standard deviation | 32.04 | 30.71 | 1.11 | 1.21 | 0.40 | 0.24 | ------- | ------- | |
Maximum | 122.21 | 133.09 | 4.34 | 4.05 | 1.36 | 0.85 | ------- | ------- | |
Minimum | 17.18 | 25.80 | 0.91 | 0.09 | 0.12 | 0.11 | ------- | ------- | |
DLS mix of commercial and residential EPLs | Mean | 57.13 | 67.33 | 2.95 | 0.63 | 1.14 | 0.37 | 0.07 | ------- |
Standard deviation | 52.20 | 61.53 | 2.53 | 0.63 | 1.22 | 0.46 | 0.08 | ------- | |
Maximum | 132.15 | 196.30 | 7.19 | 1.83 | 3.66 | 1.41 | 0.27 | ------- | |
Minimum | 8.08 | 10.59 | 0.26 | 0.03 | 0.10 | 0.01 | 0.01 | ------- | |
NS industrial zone EPLs | Mean | 39.04 | 57.47 | 1.82 | 0.44 | 0.89 | 0.89 | 0.63 | 0.06 |
Standard deviation | 42.02 | 59.25 | 1.97 | 0.55 | 1.07 | 0.97 | 0.66 | 0.07 | |
Maximum | 138.30 | 160.40 | 6.26 | 1.73 | 3.55 | 3.22 | 2.27 | 0.22 | |
Minimum | 7.24 | 10.55 | 0.24 | 0.05 | 0.07 | 0.09 | 0.14 | 0.01 | |
TS parking lot EPLs | Mean | 8.18 | 10.97 | 0.26 | 0.10 | 0.11 | 0.05 | ------- | ------- |
Standard deviation | 7.98 | 10.14 | 0.24 | 0.11 | 0.10 | 0.07 | ------- | ------- | |
Maximum | 24.35 | 30.33 | 0.78 | 0.29 | 0.28 | 0.24 | ------- | ------- | |
Minimum | 1.09 | 1.16 | 0.07 | 0.01 | 0.01 | 0.01 | ------- | ------- | |
Natural rainfall | EMCs(mg/L) | 14.62 | ——- | 0.98 | 0.43 | 0.46 | ------- | ——- | ------- |