2017-02-03_PERMIT FILE - C1980004 ‎(13)‎

• Permit No: C1980004
• IBM Index Class Name: Permit File
• Doc Date: 2/3/2017
• Section_Exhibit Name: Appendix E List of Permits
• Media Type: D
• Archive: No

PART III
Page 46 of 48
Permit No.: CO0000906
31. SAR and Adjusted SAR - The equation for calculation of SAR-adj is:
SAR-adj = Na+
Ca_, + Mg++
2
Where:
Na'= Sodium in the effluent reported in meq/1
Mg"= Magnesium in the effluent reported in meq/1
Ca,, = calcium (in meq/t) in the effluent modified due to the ratio of bicarbonate to calcium
The values for sodium (Na+), calcium (Ca++), bicarbonate (HCO3-) and magnesium (Mg++) in this equation are
expressed in units of milliequivalents per liter (meq/1). Generally, data for these parameters are reported in terms
of mg/l, which must then be converted to calculate the SAR. The conversions are:
meq/1 =
Concentration in mg l l
Equivalent weight in mg l meq
Where the equivalent weights are determined based on the atomic weight of the element divided by the ion's
charge:
Na' = 23.0 mg/meq (atomic weight of 23, charge of 1)
Ca" = 20.0 mg/meq (atomic weight of 40.078, charge of 2)
Mg" = 12.15 mg/meq (atomic weight of 24.3, charge of 2)
HCO3- = 61 mg/mep (atomic weight of 61, charge of 1)
The EC and the HCO3 "/Ca" ratio in the effluent (calculated by dividing the HCO3 - in meq/1 by the Ca" in meq/l)
are used to determine the Ca, using the following table.
Table - Modified Calcium Determination for Adjusted Sodium Adsorption Ratio
HCO3/Ca Ratio And EC',
Z, 3
Salinity of Effluent (EC)(dS/m)
0.1 1
0.2 1
0.3
1 0.5 1
O.Y--T-1-.-07
1.5 1
2.0 1
3.0 1
4.0 1
6.0 1
8.0
.051
13.201
13.611
13.921
14.401
14.791
15.261
15.911
16.431
17.281
17.971
19.07
19.94
.101
8.311
8.571
8.771
9.071
9.311
9.621
10.021
10.351
10.891
11.321
12.01
12.56
.151
6.341
6.541
6.691
6.921
7.111
7.341
7.651
7.901
8.311
8.641
9.17
9.58
.201
5.241
5.401
5.521
5.711
5.871
6.061
6.311
6.521
6.861
7.131
7.57
7.91
.251
4.511
4.651
4.761
4.921
5.061
5.221
5.441
5.621
5.911
6.151
6.521
6.82-
.301
4.001
4.121
4.211
4.361
4.481
4.621
4.821
4.981
5.24
5.44
5.771
6.04-
.04.35
.351
3.611
3.721
3.801
3.941
4.041
4.171
4.351
4.491
4.721
4.911
5.211
5.45
Ratio of
HCO3/Ca
.40
.451
3.30
3.40
3.48
3.60
3.70
3.82
3.98
4.11
4.32
4.49
4.77
4.98
3.051 3.141 3.221 3.331 3.421 3.531 3.681 3.801 4.001 4.151 4.411
4.61
.501
2.841
2.931
3.001
3.101
3.191
3.291
3.431
3.541
3.721
3.871
4.111
4.30
.751
1.001
2.171
2.241
2.291
2.371
2.431
2.511
2.621
2.701
2.841
2.951
3.141
3.28
1.791 1.851 1.891 1.961 2.011 2.091 2.161 2.231 2.351 2.441 2.591
2.71-
1.251
1.501
1.541
1.591
1.631
1.681
1.731
1.781
1.861
1.921
2.021
2.101
2.231
2.33
1.371 1.411 1.441 1.491 1.531 1.581 1.651 1.701 1.791 1.861 1.971
2.07
1.751
2.00
1.231
1.271
1.301
1.351
1.381
1.431
1.491
1.541
1.621
1.681
1.781
1.86
1.13 1.16 1.19 1.23 1.26 1.31 1.36 1.40 1.48 1.54 1.63
1.70
2.25
1.04
1.08
1.10
1.14
1.17
1.21
1.26
1.30
1.37
1.42
1.51
1.58