Watershed

Location type

Wet events

Dry events

Average (range) PCB (ng/L)

Median

PCB

(ng/L)

Range

susp.

solids

(mg/L)

#

Samples

Average

(range)

PCB

(ng/L)

Median PCB (ng/L)

Range suspended solids (mg/L)

#

Samples

Cataraqui River

(Kingston)

Upstream reference

n/a

0.0

4.8 - 17.9

2

Etobicoke Creek

(Toronto)

Non-source

7.4

(1.8 - 22.4)

2.4

49 - 575

4

1.1

6.6

1

Twelve-Mile Creek

(St. Catharines)

Non-source

9.5

(1.5 - 22.4)

4.6

18.1 - 38.5

3

2.0

(0.8 - 3.9)

2.0

5 - 87

9

Twelve-Mile Creek-Beaverdams Creek. (Thorold)

Upstream reference

3.1

(1.2 - 5.8)

2.8

16.6 - 39.3

4

1.1

(0.5 - 1.5)

1.1

3.1 - 51

4

Non-source

0.5

(0.1 - 1.3)

0.1

6.4 - 8.7

3

0.4

4.5

1

Walker’s Creek (St. Catharines)

Urban

reference

2.6

(0.6 - 6.2)

1.2

4.1 - 610

3

0.7

15.2

1

Spring Garden Creek (St. Catharines)

Urban

reference

2.1

(0.5 - 4.0)

1.6

4.1 - 80.1

3

0.2

5.8

1

Turkey Creek (Windsor)

Upstream reference

1.0

(0.1 - 1.9)

1.1

1.7 - 46.5

4

1.1

(0.1 - 3.7)

0.3

5.7 - 27.8

4

Non-source

5.2

(0.3 - 18.1)

2.4

5.5 - 118

10

4.5

(0.1 - 27.8)

0.6

2.8 - 858

13

Little River (Windsor)

Upstream reference

5.8

(1.2 - 10.4)

n/a

47.6 - 400

2

0.6

(0.4 - 0.9)

0.4

13.4 - 21.0

3

Non-source

3.5

(1.3 - 7.5)

3.3

46.2 - 131

7

1.8

(0.8 - 3.8)

1.6

8.4 - 43.0

7