NC0003719_Worksheets_20230224

NPDES Permit Fact Sheet - 2/4/2024
NPDES Permit No: NC00
Table 1: OCPSF Subpart I Calculations
Stream classification:CSUBPART I APPENDEX A - METAL WASTE FLOW
FACILITY =>DAK America
Total Chromium =>
NPDES Permit # =>NC00037190 MGD
= inputs
Total Copper =>
OCPSF Flow =>0.150MGD0 MGD
0.993
Total Cyanide =>
7Q10s =>791.00cfs0 MGD
1Q10 = 0.843 x (7Q10s)
Total Lead =>
Average flow =>4340.00cfs1Q10s => 636.38cfs0 MGD
Total Nickel =>
Qp =>0.50MGD0 MGD
Total Zinc =>
IWC @ 7q10S =>0.0010.098%IWC @ 1Q10 flow =>0.0010.1%0 MGD
IWC @ avg. flow =>0.0000.018%
Calculates from OCPSF Calculates limit based on IWC Calculates from permit flow -
Policy
OCPSF TableWQS Table - Chronic
Flowselection - ChronicChronic
OCPSFOCPSFOCPSFOCPSFFederalAquaticHumanAllowableAllowableAllowable Allowable
DailyMonthlyDailyMonthlyCriteria orLife/TrHealth/WSAcuteAquaticHumanAquaticHuman
MaximumAverageMaximumAverageStateStandardStandardStandardsLifeHealth/WSLifeHealth/WS
Parameter(µg/L)(µg/L)(lbs/day)(lbs/day)Standard(µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(lbs/day)(lbs/day)
1Acenaphthene59220.0740.028FCnone90nonenone91930.541none383.350
2Acenaphthylene59220.0740.028FCnonenonenonenonenonenonenone
3Acrylonitrile 242960.3030.120FCnone7nonenone39106.145none163.073
4Anthracene59220.0740.028FC0.05400none51.07408580.1840.2131703.779
5Benzene 136370.1700.046SSnone51nonenone284916.201none1188.101
6Benzo(a)anthracene (PAH)59220.0740.028FCnone0.0013nonenone7.263none0.030
73,4-Benzofluoranthene (PAH)61230.0760.029FCnonenonenonenonenonenonenone
8Benzo(k)fluoranthene (PAH)59220.0740.028FCnone0.0013nonenone7.263none0.030
9Benzo(a)pyrene (PAH)61230.0760.029FCnone0.00013nonenone0.726none0.003
10Bis(2-ethylhexyl) phthalate 2791030.3490.129FCnone0.37nonenone2067.039none8.620
11Carbon Tetrachloride 38180.0480.023SSnone5nonenone27932.961none116.480
12Chlorobenzene (TCBEN)28150.0350.019FCnone800nonenone817160.368none3407.559
13Chloroethane2681040.3350.130FCnonenonenonenonenonenonenone
14Chloroform 46210.0580.026SSnone2000nonenone11173184.358none46592.179
152-Chlorophenol (TCPEN)98310.1230.039FCnone800nonenone817160.368none3407.559
16Chrysene (PAH) 59220.0740.028FCnone0.13nonenone726.257none3.028
17Di-n-butyl phthalate57270.0710.034FCnone30nonenone30643.514none127.783
181,2-Dichlorobenzene (TCBEN)163770.2040.096FC4701,300none480081.721327885.5982001.9415537.283
191,3-Dichlorobenzene (TCBEN)44310.0550.039FC39010.00none398365.6810214.5051661.18542.594
201,4-Dichlorobenzene (TCBEN)28150.0350.019FC100900none102145.05919305.414425.9453833.504
211,1-Dichloroethane59220.0740.028FCnonenonenonenonenonenonenone
221,2-Dichloroethane 211680.2640.085FCnone650nonenone3631284.916none15142.458
231,1-Dichloroethylene25160.0310.020FCnone20000nonenone20429009.193none85188.968
241,2-trans-Dichloroethylene54210.0680.026FCnone4000nonenone4085801.839none17037.794
252,4-Dichlorophenol (TCPEN)112390.1400.049FCnone60nonenone61287.028none255.567
261,2-Dichloropropane 2301530.2880.191FCnone31nonenone173184.358none722.179
271,3-Dichloropropylene 44290.0550.036FCnone12nonenone67039.106none279.553
28Diethyl phthalate203810.2540.101FC1200nonenone1225740.55none5111.338none
292,4-Dimethylphenol36180.0450.023FC3203,000none326864.153064351.3791363.02312778.345
30Dimethyl phthalate47190.0590.024FCnone2,000nonenone2042900.919none8518.897
314,6-Dinitro-o-cresol277780.3470.098FCnonenonenonenonenonenonenone
322,4-Dinitrophenol (TPEN)123710.1540.089FCnone300nonenone306435.138none1277.835
332,4-Dinitrotoluene 2851130.3570.141FCnone1.7nonenone9497.207none39.603
342,6-Dinitrotoluene 6412550.8020.319FCnonenonenonenonenonenonenone
35Ethylbenzene108320.1350.040FCnone130nonenone132788.560none553.728

NPDES Permit Fact Sheet - 2/4/2024
NPDES Permit No: NC00
Table 1: OCPSF Subpart I Calculations
OCPSFOCPSFOCPSFOCPSFFederalAquaticHumanAllowableAllowableAllowable Allowable
DailyMonthlyDailyMonthlyCriteria orLife/TrHealth/WSAcuteAquaticHumanAquaticHuman
MaximumAverageMaximumAverageStateStandardStandardStandardsLifeHealth/WSLifeHealth/WS
Parameter(µg/L)(µg/L)(lbs/day)(lbs/day)Standard(µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(lbs/day)(lbs/day)
36Fluoranthene68250.0850.031FCnone20nonenone20429.009none85.189
37Fluorene59220.0740.028FCnone70nonenone71501.532none298.161
38Hexachlorobenzene TCBEN)28150.0350.019FCnone0.000079nonenone0.441none0.002
39Hexachlorobutadiene 49200.0610.025SSnone18nonenone100558.659none419.330
40Hexachloroethane 54210.0680.026FCnone0.1nonenone558.659none2.330
41Methyl Chloride190860.2380.108FCnonenonenonenonenonenonenone
42Methylene Chloride 89400.1110.050FCnone1,000nonenone5586592none23296
43Naphthalene 59220.0740.028FC330nonenone337078.65none1405.618none
44Nitrobenzene68270.0850.034FCnone600nonenone612870.276none2555.669
452-Nitrophenol69410.0860.051FCnonenonenonenonenonenonenone
464-Nitrophenol124720.1550.090FCnonenonenonenonenonenonenone
47Phenanthrene59220.0740.028FCnonenonenonenonenonenonenone
48Phenol26150.0330.019FCnone300,000nonenone306435138none1277835
49Pyrene67250.0840.031FCnone30nonenone30644none128
50Tetrachloroethylene 56220.0700.028SSnone3300nonenone18435754none76877
51Toluene80260.1000.033SS11520none11235.9653115446.8542215
52Total Chromium277011100.0000.0000.000.0000.0000.000
Total Chromium IIISS0.000.0000.0000.000
Total Chromium VISS0.000.0000.0000.000
53Total Copper338014500.0000.000SS0.000.0000.0000.000
54Total Cyanide12004200.0000.000SS0.000.0000.0000.000
55Total Lead6903200.0000.000SS0.000.0000.0000.000
56Total Nickel398016900.0000.000SS0.000.0000.0000.000
57Total Zinc261010500.0000.000SS0.000.0000.0000.000
581,2,4-Trichlorobenzene (TCBEN)140680.1750.085FCnone0.076nonenone77.630none0.324
591,1,1-Trichloroethane 54210.0680.026FCnone200000nonenone1117318436none4659218
601,1,2-Trichloroethane 54210.0680.026FCnone8.9nonenone49721none207.335
61Trichloroethylene 54210.0680.026FCnone30nonenone167598none698.883
62Vinyl Chloride 2681040.3350.130SSnone2.4nonenone13408none55.911
63Dibenz(a,h)anthracene (PAH)FC0.000130.000.7260.0000.003
64Indeno(1,2,3-ed)pyrene (PAH)FC0.00130.007.2630.0000.030
65Total PAH(WS WQS)SS0.03110.00173.70.0000.725
66Pentachlorobenzene (TCBEN)SS
Tetrachlorobenzene (TCBEN)
67Total Chlorinated Benzenes(WS WQS)SS0.000.0000.0000.000
683-methyl-4-ChlorophenolSS
69PentachlorophenolSS
70Trichlorophenol, 2,4,6SS
71Total Chlorinated Phenols(WS WQS)SS0.000.0000.0000.000
Total PAH
Total Chlorinated Benzenes
Total Chlorinated Phenols

NPDES Permit Fact Sheet - 2/4/2024
NPDES Permit No: NC00
Table 1: OCPSF Subpart I Calculations
1.2953617
Selects lowest N,O, P
value - Monthly
Selected Limit
OCPSF
MonthlyMonthly
MaximumMaximumLimit
(lbs/day)(lbs/day)Based On
0.0280.028OCPSF
0.0280.028OCPSF
0.1200.120OCPSF
0.0280.028OCPSF
0.0460.046OCPSF
0.0280.028OCPSF
0.0290.029OCPSF
0.0280.028OCPSF
0.0290.003CHRONIC
0.1290.129OCPSF
0.0230.023OCPSF
0.0190.019OCPSF
0.1300.130OCPSF
0.0260.026OCPSF
0.0390.039OCPSF
0.0280.028OCPSF
0.0340.034OCPSF
0.0960.096OCPSF
0.0390.039OCPSF
0.0190.019OCPSF
0.0280.028OCPSF
0.0850.085OCPSF
0.0200.020OCPSF
0.0260.026OCPSF
0.0490.049OCPSF
0.1910.191OCPSF
0.0360.036OCPSF
0.1010.101OCPSF
0.0230.023OCPSF
0.0240.024OCPSF
0.0980.098OCPSF
0.0890.089OCPSF
0.1410.141OCPSF
0.3190.319OCPSF
0.0400.040OCPSF

NPDES Permit Fact Sheet - 2/4/2024
NPDES Permit No: NC00
Table 1: OCPSF Subpart I Calculations
Selected Limit
OCPSF
MonthlyMonthly
MaximumMaximumLimit
(lbs/day)(lbs/day)Based On
0.0310.031OCPSF
0.0280.028OCPSF
0.0190.002CHRONIC
0.0250.025OCPSF
0.0260.026OCPSF
0.1080.108OCPSF
0.0500.050OCPSF
0.0280.028OCPSF
0.0340.034OCPSF
0.0510.051OCPSF
0.0900.090OCPSF
0.0280.028OCPSF
0.0190.019OCPSF
0.0310.031OCPSF
0.0280.028OCPSF
0.0330.033OCPSF
none0.000SEE RPA
no OCPSF LIMITSEE RPA
no OCPSF LIMITSEE RPA
none0.000SEE RPA
none0.000SEE RPA
none0.000SEE RPA
none0.000SEE RPA
none0.000SEE RPA
0.0850.085OCPSF
0.0260.026OCPSF
0.0260.026OCPSF
0.0260.026OCPSF
0.1300.130OCPSF
n/an/aCHRONIC
n/an/aCHRONIC
n/a0CHRONIC
n/a0CHRONIC
n/a0CHRONIC