WQ0033816_Worksheets_20221102 (2)

M-B Industries
N C0000311
Freshwater RPA -
Qw (MGD) =
0.10
1 Q l OS (cfs) =
22.98
7Q 1 OS (cfs) =
27.90
7QIOW (cfs) =
NO 7Q1 Ow DATA
30Q2 (cfs) =
47.90
Avg. Stream Flow, QA (cfs) =
93.80
Receiving Stream:
NO H U C NUMBER
95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: II
IWC% (cry, 1 Q l OS = 0.669980549
IWC% (cry, 7Q 1 OS = 0.552486188
IWC% (a� 7Q 1 OW = N/A
IWC% (a, 30Q2 = 0.322547081
IW%C (a, QA = 0.164972593
Stream Class: C Tr HQW
Outfall 003
Qw = 0.1 MGD
COMBINED HARDNESS (mg/L)
Acute = 25 mg/L
Chronic = 25 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
N
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
CJ
a
Chronic Applied
Acute
n 9 Det. Max Pred Cw Allowable Cw
Standard
Acute (FW): 50,747.7
Arsenic
C
150 FW(7Q10s) 340
ug/L
I
I
no limit
1 0
NO DETECTS
___
Chronic (FW) 27,150.0
Max = 10
Arsenic
C
10 HH/WS(Qavg)
ug/L
Note: n < 9
_MDL
Chronic (HH) 6,061.6
Limited data set
Max MDL = 10
Acute: 9,701.77
n/a
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
0 0
N/A
--Chronic: --- —
--------------------------
1,176.50
Acute: 483.538
no limit
Cadmium
NC
0.5899 FW(7Q10s) 3.2396
ug/L
1 0 NO DETECTS
Note: n < 9
Chronic: 106.768
Limited data set
Max MDL = 1
Acute: NO WQS
no limit
Chlorides
NC
230 FW(7Q10s)
mg/L
1 1
3.5
Note: n < 9
Default C.V.
Chronic: 41,630.0
Limited data set
No value > Allowable Cw
Acute: NO WQS
n/a
Chlorinated Phenolic Compounds
NC
1 A(30Q2)
ug/L
0 0
N/A
--Chronic:----310.0 --
--------------------------
Acute: NO WQS
n/a
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
0 0
N/A
--Chronic: --- —
--------------------------
93,009.7
Acute: 135,090.8
no limit
Chromium III
NC
117.7325 FW(7Q10s) 905.0818
µg/L
0 0
N/A
--Chronic: --- 21,309.E —
--------------------------
Acute: 2,388.1
no limit
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
--Chronic:----1,991.0--
--------------------------
Tot Cr value(s)
< 50 and < Cr VI
Allowable Cw
Chromium, Total
NC
µg/L
20 20
35.4
Max reported value = 32.8
Acute: 1,563.03
n/a
Copper
NC
7.8806 FW(7Q10s) 10.4720
ug/L
0 0
N/A
--Chronic: --- —
--------------------------
1,426.40
WQ0033816_Worksheets_20221102 (2), rpa
Page 1 of 3 3/30/2023

M-B Industries Outfall 003
NC0000311 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 0.1 MGD
Acute: 3,283.7
no limit
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
1 0
NO DETECTS
Note: n < 9
Chronic: 905.0
Limited data set
Max MDL = 10
Acute: NO WQS
n/a
Fluoride
NC
1800 FW(7Q10s)
ug/L
0 0
N/A
--Chronic: --- 325,800.0—
--------------------------
Acute: 11,267.059
no limit
Lead
NC
2.9416 FW(7Q10s) 75.4871
ug/L
1 0
NO DETECTS
Note: n < 9
Chronic: 532.434
Limited data set
Max MDL = 5
Acute: NO WQS
n/a
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
--Chronic:----2,172.0--
--------------------------
Acute: NO WQS
n/a
Molybdenum
NC
2000 HH(7Q10s)
ug/L
0 0
N/A
--Chronic: ---
--------------------------
362,000.0—
Acute (FW): 50,032.6
Nickel
NC
37.2313 FW(7Q10s) 335.2087
µg/L
n/a
0 0
N/A
___
Chronic (FW) 6,738.9
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Chronic (WS) 4,525.0
Acute: 8,358.5
no limit
Selenium
NC
5 FW(7Q10s) 56
ug/L
1 0
NO DETECTS
Note: n < 9
Chronic: 905.0
Limited data sei
Max MDL = 10
Acute: 44.240
no limit
Silver
NC
0.06 FW(7Q10s) 0.2964
ug/L
1 0 NO DETECTS
Note: n < 9
Chronic: 10.860
Limited data set
Max MDL = 5
Acute: 18,762.5
no limit
Zinc
NC
126.7335 FW(7Q10s) 125.7052
ug/L
1 0
NO DETECTS
Note: n < 9
Chronic: 22,938.8
Limited data set
Max MDL = 10
Acute: NO WQS
no limit
Cis 1,2 dichloroethene
C
720 HH(Qavg)
µg/L
20 0
NO DETECTS
Chronic: 436436.12903
Max MDL=2
Acute: NO WQS
no limit
Tetrachloroethene
C
0.3 HH(Qavg)
µg/L
20 2
3.07500
--Chronic: --- 181.84839—
--------------------------
No value > Allowable Cw
Acute: NO WQS
Trichloroethene
C
30 HH(Qavg)
µg/L
20 0
NO DETECTS
--Chronic: 18184.83871
--------------------------
no limit
Max MDL =2
Acute:
0 0
N/A
WQ0033816_Worksheets_20221102 (2), rpa
Page 2 of 3 3/30/2023

M-B Industries
Outfall 003
NC0000311 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators Qw = 0.1 MGD
Chronic: ------------ ------ ----
----
I I I I I I I I
WQ0033816_Worksheets_20221102 (2), rpa
Page 3 of 3 3/30/2023