NC0045993_Worksheets_20240311

Effluent Guidelines Calculations
ATI Allvac - NC0045993
40 CFR 471.32 and 471.62 (nickel and titanium alloys)
WW source
Forging Equipment
Rolling contact cw
Cooling tower and nccw
Total Process Flow (Qp)
C - Nickel-Cobalt Forming
471.32
Rolling contact cw
Forging equit. Cleaning water
Forging contact cooling water
Forging press hyd. Leakage
Misc. wastewater sources
Sub-total
F - Titanium Forming
471.62
Rolling contact cw
Forging contact cooling water
Forging equit. Cleaning water
Forging press hyd. Leakage
Misc. ww sources
Ammonia WQBEL limits are based on the Division policy
Based on RPA, the WQBELs for Ni and Copper are required
Flow (gpd)
1427
2854
50303
4281
Ave daily prod.
(M. lb)
0.125
0.4
0.4
0.4
0.53
Ave daily prod.
(M. lb)
0.054
1.18
1.18
1.18
1.24
Chromium
Nickel
Fluoride
Cyanide
Lead
Zinc
Ammonia
Ammonia winter
Guideline limits (lb/million off-pounds)
Chromium
Daily max
0.028
0.002
0.018
0.069
0.091
Guideline limits (lb/million off-pounds)
Cyanide
Daily max
0.142
0.029
0.012
0.293
0.01
TBEL
Daily max
lb/d
0.08733
0.12973
98.76745
0.414188
0.59837
2.086322
190.1556
Average Flow
Monthly ave
0.011
0.0006
0.007
0.028
0.037
Monthly ave
0.059
0.012
0.005
0.121
0.004
Monthly ave
lb/d
0.035225
0.08708
43.34331
0.170986
0.285
0.869252
83.4442
0.183

Nickel
Daily max
0.042
0.002
0.026
0.103
0.136
Lead
Daily max
0.205
0.042
0.017
0.424
0.014
Water Quality Criteria
Acute (1/2 FAV)
ug/l
See RPA
See RPA
See RPA
See RPA
See RPA
See RPA
MGD
Monthly ave
0.028
0.002
0.018
0.069
0.091
Monthly ave
0.098
0.02
0.008
0.202
0.007
FW chronic
ug/l
See RPA
See RPA
See RPA
See RPA
See RPA
See RPA
Fluoride
Daily max
4.49
0.238
2.82
11.2
14.7
Zinc
Daily max
0.713
0.146
0.059
1.48
0.048
(from RPA spreadsheet)
WQBEL
Daily max
ug/l
0
607
3513
39.8
136.69
227.6
10
20
Monthly ave
1.99
0.106
1.25
4.94
6.5
Monthly ave
0.298
0.061
0.025
0.616
0.02
Monthly ave
ug/l
0
72.7
3513
9.8
5.74
247.4
2
4
Effluent limits (lbs/day)
Chromium
Daily max
0.0035
0.0008
0.0072
0.0276
0.04823
0.08733
Ammonia
Daily max
65.1
13.3
5.33
135
4.32

Flow MGD
Equivalent load
Daily max
lb/d
0
0.92641554
5.36161086
0.060743556
0.2086190118
0.347367672
0.0152622
0.0305244
Monthly ave
0.001375
0.00024
0.0028
0.0112
0.01961
0.035225
Monthly ave
28.6
5.86
2.35
59.2
1.9
0.183
Monthly ave
lb/d
0
0.110956194
5.36161086
0.014956956
0.0087605028
0.377586828
0.00305244
0.00610488
Nickel
Daily max
0.00525
0.0008
0.0104
0.0412
0.07208
0.12973
Fluoride
Daily max
29.1
5.95
2.38
60.1
1.93
Proposed Limits
Daily max
0.08733
0.12973
98.77
0.414
0.6
2.09
10
20
Monthly ave
0.00325
0.0008
0.0072
0.0276
0.04823
0.08708
Monthly ave
12.9
2.64
1.06
26.7
0.856
Sub-total
Monthly ave
0.035225
0.08708
43.34
0.171
0.285
0.87
2
4
Fluoride
Daily max
0.56125
0.0952
1.128
4.48
7.791
14.05545
Effluent limits (lbs/day)
Cyanide
Daily max
0.007668
0.03422
0.01416
0.34574
0.0124
0.414188
Units
lb/d
lb/d
lb/d
lb/d
lb/d
lb/d
mg/l
mg/l
Monthly ave
0.24875
0.0424
0.00112
1.976
3.445
5.71327
Monthly ave
0.003186
0.01416
0.0059
0.14278
0.00496
0.170986
WQ/TB
TB
TB
TB
TB
TB
TB
WQ
WQ
Lead
Daily max
0.01107
0.04956
0.02006
0.50032
0.01736
0.59837
keep ammonia limits
Monthly ave
0.005292
0.0236
0.00944
0.23836
0.00868
0.285372
Zinc
Daily max
0.038502
0.17228
0.06962
1.7464
0.05952
2.086322
Monthly ave
0.016092
0.07198
0.0295
0.72688
0.0248
0.869252
Ammonia
Daily max
3.5154
15.694
6.2894
159.3
5.3568
190.1556
Monthly ave
1.5444
6.9148
2.773
69.856
2.356
83.4442
Fluoride
Daily max
1.5714
7.021
2.8084
70.918
2.3932
84.712
Monthly ave
0.6966
3.1152
1.2508
31.506
1.06144
37.63004