NC0089109_Worksheets_20190417

American Zinc Products, LLC
NCO089109 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) =
0.98
1 Q l OS (cfs) =
135.83
7Q 1 OS (cfs) =
167.00
7Q 1 OW (cfs) =
334.00
30Q2 (cfs) =
403.00
Avg. Stream Flow, QA (cfs) =
914.00
Receiving Stream:
NO H U C NUMBER
WWTP/WTP Class: II
IWC% @ 1 Q l OS =
1.104825754
IWC% @ 7Q 1 OS =
0.900470545
IWC% @ 7Q 1 OW =
0.452271558
IWC% @ 30Q2 =
0.375125968
IW%C @ QA =
0.165747797
Stream Class:
WS
Outfall 001
Qw = 0.979 MGD
COMBINED HARDNESS (mg/L)
Acute = 41.3 mg/L
Chronic = 38.28 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
N
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
CJ
n
Chronic Applied Acute0.
n 4 Det. Max Pred Cw Allowable Cw
Standard
Acute (FW): 30,774.1
Arsenic
C
150 FW(7Q10s) 340
ug/L
no limit
1 1 250.0
___
Chronic (FW) 16,658.0
Default C.V.
N_ovalue > Allowable Cw
Arsenic
C
10 HH/WS(Qavg)
ug/L
Note: n < 9
Chronic (HH) 6,033.3
Limited data set
No value > Allowable Cw
Acute: 5,883.28
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
0 0
N/A
--
--Chronic:
N/A
--------------------------
721.84
Acute: 454.428
add limit
Cadmium
NC
0.8141 FW(7Q10s) 5.0206
ug/L
1 1 100.000
Note: n < 9 Default C.V.
Chronic: 90.410
Limited data set
1 value(s) > Allowable Cw
Acute: NO WQS
Chlorides
NC
230 FW(7Q10s)
mg/L
1 1 17,000.0
no limit
Note: n < 9 Default C.V.
Chronic: 25,542.2
Limited data set
No value > Allowable Cw
Acute: NO WQS
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
--Chronic: ---- --
N/A
--------------------------
266.E
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
0 0
N/A
--Chronic: --- —
N/A
--------------------------
79,973.1
Acute: 123,569.5
Chromium III
NC
166.8998 FW(7Q10s) 1365.2279
µg/L
0 0
N/A
N/A
--Chronic: --- 18,534.7 —
--------------------------
Acute: 1,448.2
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
N/A
--Chronic: ----1,221.E--
--------------------------
Tot Cr value(s) < 50 and < Cr VI
Allowable Cw
Chromium, Total
NC
µg/L
1 1 4.0
Max reported value = 4
Note: n < 9 Default C.V.
1
no limit
Limited data set
NC0089109_Worksheets_20190417, rpa
Page 1 of 3 3/6/2020

American Zinc Products, LLC
NCO089109 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfall 001
Qw = 0.979 MGD
Acute: 1,520.92
Copper
NC
11.3420 FW(7Q10s) 16.8035
ug/L
1 1 160.00
no limit
Note: n < 9 Default C.V.
Chronic: 1,259.56
Limited data set
No value > Allowable Cw
Acute: 1,991.3
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
0 0
N/A
--Chronic: ---- --
N/A
--------------------------
555.3
Acute: NO WQS
Fluoride
NC
1800 FW(7Q10s)
ug/L
1 1 20,000.0
no limit
Note: n < 9 Default C.V.
Chronic: 199,895.5
Limited data set
No value > Allowable Cw
Acute: 11,990.324
Lead
NC
4.7437 FW(7Q10s) 132.4722
ug/L
1 1 500.000
no limit
Note: n < 9 Default C.V.
___ _ ___ _ ___
Chronic: 526.806
__________________________
Limited data set
No value > Allowable Cw
Acute: NO WQS
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
--Chronic: ----1,332.E--
N/A
--------------------------
Acute: NO WQS
Molybdenum
NC
2000 HH(7Q10s)
ug/L
0 0
N/A
--Chronic: ---
N/A
--------------------------
222,106.1—
Acute (FW): 46,390.0
Nickel
NC
53.3905 FW(7Q10s) 512.5282
µg/L
no limit
1 1
150.0
___
Chronic (FW) 5,929.2
Note: n < 9
Default C.V.
N_ovalue > Allowable Cw
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Limited data set
Chronic (WS) 2,776.3
No value > Allowable Cw
Acute: 5,068.7
Selenium
NC
5 FW(7Q10s) 56
ug/L
0 0
N/A
N/A
-_ _ ---- _ - _
-Chronic: --
--------------------------
Acute: 63.605
N/A
Silver
NC
0.06 FW(7Q10s) 0.7027
ug/L
0 0
N/A
--Chronic: ---- 6.663 --
--------------------------
Acute: 17,407.9
Zinc
NC
181.8392 FW(7Q10s) 192.3265
ug/L
1 1 4,000.0
no limit
Note: n < 9 Default C.V.
Chronic: 20,193.8
Limited data set
No value > Allowable Cw
Acute: NO WQS
Tin
NC
800 HH(7QlOs)
µg/L
1 1 1.00000
no limit
Note: n < 9 Default C.V.
Chronic: 88842.43962
Limited data set
No value > Allowable Cw
Acute: NO WQS
Antimony
NC
640 HH(7Q10s)
µg/L
1 1 250.00000
no limit
Note: n < 9 Default C.V.
Chronic: 71073.95170
Limited data set
No value > Allowable Cw
Acute:
NC0089109_Worksheets_20190417, rpa
Page 2 of 3 3/6/2020

American Zinc Products, LLC
NCO089109 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfall 001
Qw = 0.979 MGD
0 0
N/A
--Chronic: ----------
Acute-
0 0
N/A
--Chronic:----------
--------------------------
NC0089109_Worksheets_20190417, rpa
Page 3 of 3 3/6/2020