N.H. Code Admin. R. Env-Wq 1703.31
The values shown in Table 1703-9 shall be used to determine saltwater chronic aquatic life criteria for ammonia, in mg NH3 /L, for a salinity of 20 g/kg:
Table 1703-9: Saltwater Chronic Aquatic Life Criteria for Ammonia in mg NH3/L; Salinity = 20 g/kg
pH
Temperature (°C)
0
5
10
15
20
25
30
35
7.0
44
30
21
14
9.7
6.6
4.7
3.1
7.2
27
19
13
9.0
6.2
4.4
3.0
2.1
7.4
18
12
8.1
5.6
4.1
2.7
1.9
1.3
7.6
11
7.5
5.3
3.4
2.5
1.7
1.2
0.84
7.8
6.9
4.7
3.4
2.3
1.6
1.1
0.78
0.53
8.0
4.4
3.0
2.1
1.5
1.0
0.72
0.50
0.34
8.2
2.8
1.9
1.3
0.94
0.66
0.47
0.31
0.24
8.4
1.8
1.2
0.84
0.59
0.44
0.30
0.22
0.16
8.6
1.1
0.78
0.56
0.41
0.28
0.20
0.15
0.12
8.8
0.72
0.50
0.37
0.26
0.19
0.14
0.11
0.08
9.0
0.47
0.34
0.24
0.18
0.13
0.10
0.08
0.07
Source. (See Revision Notes #1, #2, and #3 at chapter heading for Env-Wq 1700) #12042, eff 12-1-16; ss by #14203, eff 2-26-25