Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › Table 13 - Chronic Criteria for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife coldwater and warmwater, Unionid Mussels Present

Current through Register Vol. 30, No. 28, July 12, 2024
For the aquatic and wildlife cold and warm water uses,
					 unionids will be assumed to be present unless a study is performed
					 demonstrating that they are absent and there is no historic evidence of their
					 presence, or hydrologic modification has altered the flow regime in a way that
					 would prevent their reestablishment.
pH
Temperature
								(°C)
0-7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
4.9
4.6
4.3
4.1
3.8
3.6
3.3
3.1
2.9
2.8
2.6
2.4
2.3
2.1
2
1.9
1.8
1.6
1.5
1.5
1.4
1.3
1.2
1.1
6.6
4.8
4.5
4.3
4
3.8
3.5
3.3
3.1
2.9
2.7
2.5
2.4
2.2
2.1
2
1.8
1.7
1.6
1.5
1.4
1.3
1.3
1.2
1.1
6.7
4.8
4.5
4.2
3.9
3.7
3.5
3.2
3
2.8
2.7
2.5
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
6.8
4.6
4.4
4.1
3.8
3.6
3.4
3.2
3
2.8
2.6
2.4
2.3
2.1
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.1
6.9
4.5
4.2
4
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.4
2.2
2.1
2
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
7
4.4
4.1
3.8
3.6
3.4
3.2
3
2.8
2.6
2.4
2.3
2.2
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.1
0.99
7.1
4.2
3.9
3.7
3.5
3.2
3
2.8
2.7
2.5
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
0.95
7.2
4
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.4
2.2
2.1
2
1.8
1.7
1.6
1.5
1.4
1.3
1.3
1.2
1.1
1
0.96
0.9
7.3
3.8
3.5
3.3
3.1
2.9
2.7
2.6
2.4
2.2
2.1
2
1.8
1.7
1.6
1.5
1.4
1.3
1.3
1.2
1.1
1
0.97
0.91
0.85
7.4
3.5
3.3
3.1
2.9
2.7
2.5
2.4
2.2
2.1
2
1.8
1.7
1.6
1.5
1.4
1.3
1.3
1.2
1.1
1
0.96
0.9
0.85
0.79
7.5
3.2
3
2.8
2.7
2.5
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
0.95
0.89
0.83
0.78
0.73
7.6
2.9
2.8
2.6
2.4
2.3
2.1
2
1.9
1.8
1.6
1.5
1.4
1.4
1.3
1.2
1.1
1.1
0.98
0.92
0.86
0.81
0.76
0.71
0.67
7.7
2.6
2.4
2.3
2.2
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.1
1
0.94
0.88
0.83
0.78
0.73
0.68
0.64
0.6
7.8
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
0.95
0.89
0.84
0.79
0.74
0.69
0.65
0.61
0.57
0.53
7.9
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
0.95
0.89
0.84
0.79
0.74
0.69
0.65
0.61
0.57
0.53
0.5
0.47
8
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.1
1
0.94
0.88
0.83
0.78
0.73
0.68
0.64
0.6
0.56
0.53
0.5
0.44
0.44
0.41
8.1
1.5
1.5
1.4
1.3
1.2
1.1
1.1
0.99
0.92
0.87
0.81
0.76
0.71
0.67
0.63
0.59
0.55
0.52
0.49
0.46
0.43
0.4
0.38
0.35
8.2
1.3
1.2
1.2
1.1
1
0.96
0.9
0.84
0.79
0.74
0.7
0.65
0.61
0.57
0.54
0.5
0.47
0.44
0.42
0.39
0.37
0.34
0.32
0.3
8.3
1.1
1.1
0.99
0.93
0.87
0.82
0.76
0.72
0.67
0.63
0.59
0.55
0.52
0.49
0.46
0.43
0.4
0.38
0.35
0.33
0.31
0.29
0.27
0.26
8.4
0.95
0.89
0.84
0.79
0.74
0.69
0.65
0.61
0.57
0.53
0.5
0.47
0.44
0.41
0.39
0.36
0.34
0.32
0.3
0.28
0.26
0.25
0.23
0.22
8.5
0.8
0.75
0.71
0.67
0.62
0.58
0.55
0.51
0.48
0.45
0.42
0.4
0.37
0.35
0.33
0.31
0.29
0.27
0.25
0.24
0.22
0.21
0.2
0.18
8.6
0.68
0.64
0.6
0.56
0.53
0.49
0.46
0.43
0.41
0.38
0.36
0.33
0.31
0.29
0.28
0.26
0.24
0.23
0.21
0.2
0.19
0.18
0.16
0.15
8.7
0.57
0.54
0.51
0.47
0.44
0.42
0.39
0.37
0.34
0.32
0.3
0.28
0.27
0.25
0.23
0.22
0.21
0.19
0.18
0.17
0.16
0.15
0.14
0.13
8.8
0.49
0.46
0.43
0.4
0.38
0.35
0.33
0.31
0.29
0.27
0.26
0.24
0.23
0.21
0.2
0.19
0.17
0.16
0.15
0.14
0.13
0.13
0.12
0.11
8.9
0.42
0.39
0.37
0.34
0.32
0.3
0.28
0.27
0.25
0.23
0.22
0.21
0.19
0.18
0.17
0.16
0.15
0.14
0.13
0.12
0.12
0.11
0.1
0.09
9
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.23
0.21
0.2
0.19
0.18
0.17
0.16
0.15
0.14
0.13
0.12
0.11
0.11
0.1
0.09
0.09
0.08
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