NC0006190_Fact Sheet_20181221

Fact Sheet
NPDES Permit No. NC0006190
Permit Writer/Email Contact Bing Bai, [e-mail]:
Date: December 21, 2018
Division/Branch: NC Division of Water Resources/NPDES Complex Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
® Renewal
❑ Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2" species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information
Facility Information
Applicant/Facility Name:
South Fork Industries, Inc. / Maiden Plant
Applicant Address:
100 West Pine Street, Maiden, NC 28650
Facility Address:
100 West Pine Street, Maiden, NC 28650
Permitted Flow:
1.1 MGD
Facility Type/Waste:
Major Industrial/100% industrial
Facility Class:
Class 3
Treatment Units:
Manual bar screen; Heat exchanger; Aeration; Clarification; Post
aeration; Sludge storage lagoon
Pretreatment Program (Y/N)
No
County:
Catawba
Region
Mooresville
Briefly describe the proposed permitting action and facility background: Delta Apparel, Inc. submitted
NPDES permit renewal application for their Maiden Plant WWTP in November 2015, six months before
the current permit expiration date (May 31, 2016). In December 2016, the ownership of the Maiden Plant
WWTP was transferred from Delta Apparel, Inc. to South Fork Industries, Inc., and the permit was
Page 1 of 12

administratively continued based on Delta Apparel's renewal application. On May 10, 2018 South Fork
Industries, Inc. submitted a revised renewal application for their 1.1 MGD Maiden Plant WWTP with
updated contact information. South Fork's Maiden Plant is a major industrial textile facility for fabric
dyeing and finishing. This facility discharges 100% process wastewater, and all domestic wastewater is
treated at the Town of Maiden WWTP.
South Fork provided actual and projected production rate from 2016 through 2020 with justifications.
Due to predicted rapid production increase, tiered limits will be proposed and included in this permit
renewal. The first tier limits will be calculated based on predicted average daily production of 62,000
lbs/day for 2019, and second tier limits will be calculated based on predicted average daily production of
75,000 lbs/day for 2020. Once daily average production rate reaches 95% of 62,000 lbs/day, Permittee is
required to notify the Division and the second tier limits will become effective.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001 — Clark Creek
Stream Segment:
11-129-5-(0.3)
Stream Classification:
C
Drainage Area (mi2):
66
Summer 7Q10 (cfs)
12
Winter 7Q10 (cfs):
25.5
30Q2 (cfs):
34
Average Flow (cfs):
78
IWC (% effluent):
12 %
303(d) listed/parameter:
No
Subject to TMDL/parameter:
Yes- State wide Mercury TMDL implementation.
Subbasin/HUC:
Catawba River Basin / 03050102
USGS Topo Quad:
E14SW (Maiden NC)
3. Effluent Data Summary
Effluent data for Outfall 001 is summarized below for the period of January 2013 through December
2017.
Table 3. Effluent Data Summary Outfall 001
Parameter
Units
Average
Max
Min
Permit Limit
Flow
MGD
0.577
1.054
0.001
MA 1.1
Page 2 of 12

MA 162
BOD5
lb/day
27.6
1237.2
< 0.5
DM 325
MA 2802
COD
lb/day
714.5
2740.1
32.8
DM 5604
MA 785
TSS
lb/day
60.6
1229
< 2.7
DM 1853
MA
NH3N
mg/l
0.16
5.8
< 0.01
DM 15
MA
Sulfide
lb/day
< 0.42
< 0.82
< 0.02
DM 16
MA
Phenols
lb/day
0.08
1.18
0
DM 8
Total Chromium
µg/l
5.1
14
< 5
DM 402
pH
S.U.
8.4
9
6.6
6-9
DO
mg/l
8.2
14
5.1
DA > 5.0
Temperature
° C
21.5
30.7
3.8
Monitor only
Conductivity
µmhos/cm
8940
20000
1160
Monitor only
Total Copper
µg/l
27.6
32
23
Monitor only
Total Zinc
µg/l
252.3
477
25.2
Monitor only
Chloride
mg/1
21.7
38
13
Monitor only
Sulfates
mg/1
449
640
25
Monitor only
TN
mg/l
10.6
58.9
1.5
Monitor only
TP
mg/1
5.4
11.4
0.1
Monitor only
Color
ADMI
273
556
< 25
MA 549
MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum, DA=Daily Average
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/l of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
Page 3 of 12

If applicable, summarize any instream data and what instream monitoring will be proposed for this
permit action: The current permit requires instream monitoring for color, total copper, dissolved oxygen,
temperature and conductivity. Review of instream data from past three years indicates that no statistical
difference existed between upstream and downstream samples for all parameters (ANOVA p > 0.05).
Dissolved oxygen standard of 5 mg/1 was maintained for both upstream and downstream. monitoring for
total copper was added to the permit in 2002 renewal for development of copper TMDL in Clark Creek.
Since this segment of receiving stream is not impaired with copper, and effluent limits for copper will be
added to the Outfall 001, copper instream monitoring will be removed from this renewal. This draft
permit maintains the same instream monitoring requirements for temperature, DO, conductivity and color.
Table 4. Upstream Monitoring results summary
Temp
DO
Conductivity
Color
Total Copper
°C
mg/L
µmhos/cm
ADMI
µg/L
Average
16.8
10.6
187.1
54.6
5.6
Max
25.3
16.6
1470
219
8
Min
2.4
6.7
< 0.1
22.2
< 5
Table 5. Downstream Monitoring results summary
Temp
DO
Conductivity
Color
Total Copper
°C
mg/L
µmhos/cm
ADMI
µg/L
Average
17
10.3
277.1
56.1
6.2
Max
24.3
15.8
1170
395
8
Min
2.6
5.6
0.01
20
< 5
Is this facility a member of a Monitoring Coalition with waived instream monitoring (YIN): NO
Name of Monitoring Coalition: NA
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): The facility reported 6 BOD
limit violations (daily maximum exceedance) in 2014, and all violations were proceeded to enforcement
case.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past 5 years): The facility passed 20 of 20 quarterly chronic toxicity tests.
Summarize the results from the most recent compliance inspection: The last facility inspection conducted
on February 22, 2018 reported that the facility was not in compliance due to reporting/monitoring
violations and deficiencies in the Influent Sampling, Laboratory/Summary, Operation &
Maintenance/Summary, Bar Screens, Aeration Basin, and Aerobic Digester.
6. Water Quality -Based Effluent Limitations (WQBELs)
Page 4 of 12

Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1 Q 10 streamflow (acute Aquatic Life); 7Q 10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with I5A NCAC 2B.0204(b): NA
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/1 for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
Ifpermit limits are more stringent than TBELs, describe how limits were developed: Limitations for
BOD5 (MA 162 lbs/day, DM 325 lbs/day) was developed based on 1995 —1997 production rates
following Effluent Guidelines ,40 CFR 410 Subpart E — Knit Fabric Finishing. In 1997, A Streeter Phelps
(Level B) model for instream DO protection was performed and predicted an increase to 300 lbs/day
BOD5 would not impact the DO downstream of the outfall. Although both level B model and 40 CFR 410
allows for increases in EGLs for BOD5, the Division has elected to freeze the ELG limits for BOD5 due to
the impaired stream status and the ability of the permittee to already meet these more stringent limits.
Therefore, no changes are proposed from the previous permit limits on BOD5 limits.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/1(summer) and 1.8 mg/l (winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 ug/1) and capped at 28 ug/l (acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/l are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: Current
limitations for ammonia (MA 3 mg/L, DM 15 mg/L) are based on 1997 Waste Load Allocation. TRC is
not required for this facility since the discharge is 100% industrial. There are no proposed changes
Reasonable Potential Analysis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of/z detection limit for "less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of
Page 5 of 12

dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between January 2015
and December 2017. Pollutants of concern included toxicants with positive detections and associated
water quality standards/criteria. Based on this analysis, the following permitting actions are proposed for
this permit:
Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable
water quality standards/criteria: NA
Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria,
but the maximum predicted concentration was >50% of the allowable concentration: Copper
No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: Arsenic, Beryllium, Cadmium, Chloride, Chromium VI, Cyanide, Lead, Nickel,
Selenium, Silver, Zinc, Sulfate.
If applicable, attach a spreadsheet of the RPA results as well as a copy of the Dissolved Metals
Implementation Fact Sheet for freshwater/saltwater to this Fact Sheet. Include a printout of the RPA
Dissolved to Total Metal Calculator sheet if this is a Municipality with a Pretreatment Program.
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several
exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: Chronic WET limit at 12% effluent will continue on a
quarterly frequency.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply
with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (>1 ng/1) will
receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/1) and/or if any individual value exceeds a TBEL
value of 47 ng/1
Page 6 of 12

Table 6. Mercury Effluent Data Summary
2018
# of Samples
1
Annual Average Conc. n L
2.4
Maximum Conc., ng/L
2.4
TBEL, ng/L
47
WQBEL, n L
771
Describe proposed permit actions based on mercury evaluation: Since no annual average mercury
concentration exceeded the WQBEL, and no individual mercury sample exceeded the TBEL, no mercury
limit is required. Furthermore, since this is an industrial facility discharging less than 2 MGD, no MMP is
required.
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: NA
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
1 SA NCAC 2H. 0107(c) (2) (B), 40CFR 122. 47, and EPA May 2007 Memo: NA
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 1 SA NCAC 2B.0226 for this permit renewal: NA
7. Technology -Based Effluent Limitations (TBELs)
Industrials (if not applicable, delete and skip to next Section)
Describe what this facility produces: fabric dyeing and finishing
List the federal effluent limitations guideline (ELG) for this facility: 40 CFR 410 Subpart E — Knit Fabric
Finishing (BPT and BAT)
Page 7 of 12

If the ELG is based on production or flow, document how the average productionfflow value was
calculated: This ELG is based on production. South Fork provided yearly production data from 2016 to
2017, and projected production from 2018 through 2020 (Table 7).
Table 7. Average daily production data provided by South Fork
Year
Daily Average
(lbs/day)
Increase Rate
2016
Actual
29443
-
2017
Actual
34405
16.9%
2018
Projected
50287
46.2%
2019
Projected
62000
23.3%
2020
Projected
75000
21%
Since South Fork is projecting an annual increase rate of more than 20% from 2018 to 2020, tiered limits
will be included in this permit.
For ELG limits, document the calculations used to develop TBEL limits:
Limits for first tier will be calculated using average daily production rate of 62,000 lbs/day, and limits for
second tier will be calculated using average daily production rate of 75,000 lbs/day. The Permittee is
required to notify the Division when daily average production rate exceeds 58,900 lbs/day (95% of
62,000 lbs/day) before Tier 2 limits become effective. Limits in Table 8 are calculated following the
effluent guidelines in 40 CFR 410 Subpart E - Knit Fabric Finishing.
Table 8. TBEL Development per 40 CFR 410. 52/13PT
Pollutant
BPT limitations
(pounds per 1000
pounds of product)
Tier 1
( 62,000 lbs/day)
Tier 2
(75,000 lbs/day)
Calculated Limits
(lbs/day)
Calculated Limits
(lbs/day)
Daily
Maximum
Monthly
Average
Daily
Maximum
Monthly
Average
Daily
Maximum
Monthly
Average
BOD5
5
2.5
310
155
375
187.5
COD
60
30
3720
1860
4500
2250
TSS
21.8
10.9
1351.6
675.8
1635.0
817.5
Sulfide
0.2
0.1
12.4
6.2
15
7.5
Phenols
0.1
0.05
6.2
3.1
7.5
3.8
Total
chromium
0.1
0.05
6.2
3.1
7.5
3.8
pH
6.0 - 9.0 s.u.
A comparison of TBEL and QWBEL limits are shown in Table 9. Results show that TBEL limits for
BOD5, COD, TSS, Sulfide, Phenol and Total Chromium are all stringent than WQBEL limits. Therefore,
TBEL Limits will be applied and included in the permit. Although 40 CFR 410 allows for increases in
EGLs based on the actual production, the Division has elected to freeze the EGL limits for BOD, TSS,
Sulfide, and Phenols due to the impaired stream status and the ability of the permittee to already meet
these more stringent limits. After comparing the proposed limits with the frozen limits, proposed limits
Page 8 of 12

for BOD5 and TSS for Tier 2 of this permit are less stringent than the frozen limits. Therefore, limits
BOD5 and TSS for Tier 2 page will remain the same as existing limits at Monthly average 162 lbs/day
and Daily Max 325 lbs/day for BOD5, and Monthly average 785 lbs/day and Daily Max 1853 lbs/day for
TSS. These numbers are based on 1995-1997 production rates.
Table 9. Comparison of TBEL and WQBEL with permitted flow of 1.1 MGD
Pollutant
TBEL - Tier 1 (lbs/day)
TBEL - Tier 2 (lbs/day)
WQBEL (mg/L)
WQBEL (lbs/day)
Daily
Maximum
Monthly
Average
Daily
Maximum
Monthly
Average
Daily
Maximum
Monthly
Average
Daily
Maximum
Monthly
Average
BOD5
310
155
375
187.5
-
-
-
-
COD
3720
1860
4500
2250
-
-
-
-
TSS
1351.6
675.8
1635.0
817.5
-
-
-
-
Sulfide
12.4
6.2
15
7.5
1.43
1.43
23.8
23.8
Phenol
6.2
3.1
7.5
3.8
6.3
6.3
57.8
57.8
Total
Chromium
6.2
3.1
7.5
3.8
-
-
-
-
Chromium III
-
-
-
-
8.8
1.34
80.7
12.3
Chromium VI
-
-
-
-
0.109
0.088
1.0
0.81
pH
6.0 - 9.0 s.u.
Note: Bolded numbers are more stringent limits
Although WQBEL for Chromium III and Chromium VI are more stringent than TBEL, according to
Reasonable Potential Analysis, all reported total chromium values were < 5 µg/L, and there is no
reasonable potential to exceed water quality standard for Chromium III or Chromium VI. Therefore, no
limit or monitoring for Chromium III or Chromium VI will be added to the permit.
If any limits are based on best professional judgement (BPJ), describe development: NA
Document any TBELs that are more stringent than WQBELs:
TBELs for BOD5, COD, TSS, Sulfide, Phenol, and Total Chromium are more stringent than WQBELs.
Document any TBELs that are less stringent than previous permit: NA
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 213.0201. Each applicant for a new/expanding NPDES permit
must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105( c)(2). In all
cases, existing instream water uses and the level of water quality necessary to protect the existing use is
maintained and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA
Page 9 of 12

9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/NO): NO
If YES, confirm that antibacksliding provisions are not violated: NA
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 213.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to
submit additional NPDES reports electronically. This permit contains the requirements for electronic
reporting, consistent with Federal requirements.
12.Summary of Proposed Permitting Actions:
Table 10. Current Permit Conditions and Proposed Changes 1.1 MGD
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Flow
MA 1.1 MGD
No change
15A NCAC 2B .0505
BOD5 — Tier 1
MA 162 lbs/day
MA 155 lbs/day
TBEL. 40 CFR 410.52BPT
DM 325 lbs/day
DM 310 lbs/day
BOD5 Tier 2
MA 162 lbs/day
MA 162 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 325 lbs/day
DM 325 lbs/day
COD— Tier 1
MA 2802 lbs/day
MA 1860 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 5604 lbs/day
DM 3720 lbs/day
COD — Tier 2
MA 2802 lbs/day
MA 2250 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 5604 lbs/day
DM 4500 lbs/day
Page 10 of 12

TSS - Tier 1
MA 785 lbs/day
MA 675.8 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 1853 lbs/day
DM 1351.6 lbs/da
TSS - Tier 2
MA 785 lbs/day
MA 785 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 1853 lbs/day
DM 1853 lbs/day
Sulfide - Tier 1
MA 8 lbs/day
MA 6.2 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 16 lbs/day
DM 12.4 lbs/da
Sulfide - Tier 2
MA 8 lbs/day
MA 7.5 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 16 lbs/day
DM 15 lbs/day
Phenol - Tier 1
MA 4 lbs/day
MA 3.1 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 8 lbs/day
DM 6.21bs/da
Phenol - Tier 2
MA 41bs/day
MA 3.8 lbs/day
TBEL. 40 CFR 410.52/BPT
DM 8 lbs/day
DM 7.5 lbs/day
Total Chromium
DM 402 µg/L
MA 3.1 lbs/day
TBEL. 40 CFR 410.52/BPT
- Tier 1
DM 6.21bs/da
Total Chromium
DM 402 µg/L
MA 3.8 lbs/day
TBEL. 40 CFR 410.52/BPT
- Tier 2
DM 7.5 lbs/da
WQBEL. Based on protection of
NH3-N
MA 3 mg/l
No change
State WQ criteria. 15A NCAC
WA 15 mg/1
2B.0200
DO
Daily Average > 5 mg/l
No change
WQBEL. State WQ standard, 15A
(Effluent)
NCAC 2B.0200
pH
6 - 9 SU
No change
WQBEL. State WQ standard, 15A
NCAC 2B.0200
Color
MA 549 ADMI
No change
WQBEL. State WQ standard, 15A
Effluent
NCAC 2B.0200
Temperature
Monitor 3/Week
No change
WQBEL. State WQ standard, 15A
(Effluent)
NCAC 2B .0500
Conductivity
Monitor 3/Week
No change
WQBEL. State WQ standard, 15A
(Effluent)
NCAC 2B .0500
Total Copper
Monitor Quarterly
No change
Reasonable Potential Analysis. No
(Effluent)
RP With predicted C. > 50% of Ca
Total Zinc
Monitor Quarterly
Removed from permit
Reasonable Potential Analysis. No
RP in RPA.
Chloride
Monitor Quarterly
Removed from permit
Reasonable Potential Analysis. No
RP in RPA.
Sulfates
Monitor Quarterly
Removed from permit
Reasonable Potential Analysis. No
RP in RPA.
Total Nitrogen
Monitor Monthly
No change
WQBEL. 15A NCAC 2B.0200
Total Phosphorus
Monitor Quarterly
No change
WQBEL. 15A NCAC 2B.0200
Chronic limit 12%
WQBEL. No toxics in toxic
Toxicity Test
effluent
No change
amounts. 15A NCAC 2B.0200 and
15A NCAC 2B.0500
Color
Monitor Only
No change
WQBEL. State WQ standard, 15A
(Instream)
NCAC 2B .0500
Temperature
Monitor Only
No change
WQBEL. State WQ standard, 15A
(Instream)
NCAC 2B .0500
DO
Monitor Only
No change
WQBEL. State WQ standard, 15A
(Instream)
NCAC 2B .0500
Conductivity
Monitor Only
No change
WQBEL. State WQ standard, 15A
Instream
NCAC 2B .0500
Page 11 of 12

Total Copper
(Instream)
Monitor Only
Removed from permit
Receiving stream not impaired with
copper.
Add effluent and
upstream monitoring
Required to assess dissolved metal
Total Hardness
No requirement
based on the new 2016
limitations
dissolved metal
standards
Electronic
Add Electronic
In accordance with EPA Electronic
Reporting
No requirement
Reporting Special
Reporting Rule 2015.
Condition
MGD — Million gallons per day, MA - Monthly Average, WA — Weekly Average, DM — Daily Max
13. Public Notice Schedule:
Permit to Public Notice: 10/31/2018
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the
Director within the 30 days comment period indicating the interest of the party filing such request and the
reasons why a hearing is warranted.
14. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): Yes
If Yes, list changes and their basis below:
• Sample type for Total Chromium was corrected to composite in Sections A. (1) and A. (2)
Effluent Limitations and Monitoring Requirements.
15. Fact Sheet Attachments (if applicable):
• RPA Spreadsheet Summary
• Instream DO Summary
• Dissolved Metals Implementation/Freshwater or Saltwater
• NH3-N and TRC WLA
• Mercury TMDL Evaluation
Page 12 of 12

Permit No. NC0006190
NPDES Implementation of Instream Dissolved Metals Standards - Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS) Triennial Review was approved by the NC
Environmental Management Commission (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards - as
approved.
Table 1. NC Dissolved Metals Water Q ality Standards/A uatic Life Protection
Parameter
Acute FW, µg/1
(Dissolved)
Chronic FW, µg/l
(Dissolved)
Acute SW, µg/l
(Dissolved)
Chronic SW, µg/1
(Dissolved)
Arsenic
340
150
69
36
Beryllium
65
6.5
---
---
Cadmium
Calculation
Calculation
40
8.8
Chromium III
Calculation
Calculation
---
---
Chromium VI
16
11
1100
50
Copper
Calculation
Calculation
4.8
3.1
Lead
Calculation
Calculation
210
8.1
Nickel
Calculation
Calculation
74
8.2
Silver
Calculation
0.06
1.9
0.1
Zinc
Calculation
Calculation
90
81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation = Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still necessary
to evaluate total recoverable aquatic life and human health standards listed in 15A NCAC
213.0200 (e.g., arsenic at 10 µg/l for human health protection; cyanide at 5 µg/L and fluoride at
1.8 mg/L for aquatic life protection).
Table 2. Dissolved Freshwater Standards for Hardness -Dependent Metals
The Water Effects Ratio (WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal
NC Dissolved Standard, µg/I
Cadmium, Acute
WER*11.136672-[ln hardness] (0.04183 8)1 e^ f0.9151 [ln hardness]-3.14851
Cadmium, Acute Trout waters
WER*11.136672-[ln hardness] (0.04183 8)1 e^ f0.9151[ln hardness]-3.62361
Cadmium, Chronic
WER*11.101672-[ln hardness] (0.04183 8)1 e^ f0.7998[ln hardness]-4.44511
Chromium III, Acute
WER*0.316 e^{0.8190[ln hardness]+3.72561
Chromium III, Chronic
WER*0.860 e^{0.8190[ln hardness]+0.68481
Copper, Acute
WER*0.960 eA f O.9422[ln hardness]-1.7001
Copper, Chronic
WER*0.960 eAtO.8545[ln hardness]-1.7021
Lead, Acute
WER*11.46203-[ln hardness](0.145712)) • e^11.273[ln hardness]-1.460)
Lead, Chronic
WER*11.46203-[ln hardness](0.145712)) • e^11.273[ln hardness]-4.705)
Nickel, Acute
WER*0.998 eAtO.8460[ln hardness]+2.2551
Nickel, Chronic
WER*0.997 eAtO.8460[ln hardness]+0.05841
Page 1 of 4

Permit No. NC0006190
Silver, Acute
WER*0.85 • e^{l.72[ln hardness]-6.59}
Silver, Chronic
Not applicable
Zinc, Acute
WER*0.978 e^{0.8473[ln hardness]+0.884}
Zinc, Chronic
WER*0.986 e^{0.8473[ln hardness]+0.884}
General Information on the Reasonable Potential Analysis (RPA)
The RPA process itself did not change as the result of the new metals standards. However, application of
the dissolved and hardness -dependent standards requires additional consideration in order to establish the
numeric standard for each metal of concern of each individual discharge.
The hardness -based standards require some knowledge of the effluent and instream (upstream) hardness
and so must be calculated case -by -case for each discharge.
Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c). The
discharge -specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal (more on that
below), but it is also possible to consider case -specific translators developed in accordance with
established methodology.
RPA Permitting Guidance/WOBELs for Hardness -Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of concern,
based on recent effluent data, and calculate the allowable effluent concentrations, based on applicable
standards and the critical low -flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute), the
discharge has reasonable potential to exceed the standard, which warrants a permit limit in most cases. If
monitoring for a particular pollutant indicates that the pollutant is not present (i.e. consistently below
detection level), then the Division may remove the monitoring requirement in the reissued permit.
1. To perform a RPA on the Freshwater hardness -dependent metals the Permit Writer compiles the
following information:
• Critical low flow of the receiving stream, 7Q 10 (the spreadsheet automatically calculates
the 1 Q 10 using the formula I Q 10 = 0.843 (s7Q 10, cfs) 0.993
• Effluent hardness and upstream hardness, site -specific data is preferred
• Permitted flow
• Receiving stream classification
2. In order to establish the numeric standard for each hardness -dependent metal of concern and for
each individual discharge, the Permit Writer must first determine what effluent and instream
(upstream) hardness values to use in the equations.
The permit writer reviews DMR's, Effluent Pollutant Scans, and Toxicity Test results for any
hardness data and contacts the Permittee to see if any additional data is available for instream
hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using a
default hardness of 25 mg/L (CaCO3 or (Ca + Mg)). Minimum and maximum limits on the
hardness value used for water quality calculations are 25 mg/L and 400 mg/L, respectively.
If the use of a default hardness value results in a hardness -dependent metal showing reasonable
potential, the permit writer contacts the Permittee and requests 5 site -specific effluent and
upstream hardness samples over a period of one week. The RPA is rerun using the new data.
Page 2 of 4

Permit No. NC0006190
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
_ (Permitted Flow, cfs *Avg. Effluent Hardness, mg/L) + (s7Q10, cfs *Avg. Upstream Hardness, mg/L)
(Permitted Flow, cfs + s7Q 10, cfs)
The Combined Hardness for acute is the same but the calculation uses the 1Q10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total recoverable
metal, using the EPA Default Partition Coefficients (DPCs) or site -specific translators, if any
have been developed using federally approved methodology.
EPA default partition coefficients or the "Fraction Dissolved" converts the value for
dissolved metal at laboratory conditions to total recoverable metal at in -stream
ambient conditions. This factor is calculated using the linear partition coefficients
found in The Metals Translator: Guidance for Calculating a Total Recoverable
Permit Limit from a Dissolved Criterion (EPA 823-B-96-007, June 1996) and the
equation:
Cdiss = 1
Ctotal I + { [Kpo] [SS(i+a)] [10-6] }
Where:
ss = in -stream suspended solids concentration [mg/l], minimum of 10 mg/L used,
and
Kpo and a = constants that express the equilibrium relationship between dissolved
and adsorbed forms of metals. A list of constants used for each hardness -dependent
metal can also be found in the RPA program under a sheet labeled DPCs.
4. The numeric standard for each metal of concern is divided by the default partition coefficient (or
site -specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist (ie. silver), the
dissolved numeric standard for each metal of concern is divided by the EPA conversion factor to
obtain a Total Recoverable Metal at ambient conditions. This method presumes that the metal is
dissolved to the same extent as it was during EPA's criteria development for metals. For more
information on conversion factors see the June, 1996 EPA Translator Guidance Document.
5. The RPA spreadsheet uses a mass balance equation to determine the total allowable concentration
(permit limits) for each pollutant using the following equation:
Ca = (s7Q 10 + Qw) (Cwgs) — (s7Q 10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwqs = NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb = background concentration: assume zero for all toxicants except NH3* (µg/L or mg/L)
Qw = permitted effluent flow (cfs, match s7Q 10)
s7Q 10 = summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water, fish, and shellfish from noncarcinogens (cfs)
* Discussions are on -going with EPA on how best to address background concentrations
Flows other than s7Q 10 may be incorporated as applicable:
IQ 10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0006190
QA = used in the equation to protect human health through the consumption of water,
fish, and shellfish from carcinogens
30Q2 = used in the equation to protect aesthetic quality
6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of concern.
Data entered must have been taken within four and one-half years prior to the date of the permit
application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile upper
concentration of each pollutant. The Predicted Max concentrations are compared to the Total
allowable concentrations to determine if a permit limit is necessary. If the predicted max exceeds
the acute or chronic Total allowable concentrations, the discharge is considered to show
reasonable potential to violate the water quality standard, and a permit limit (Total allowable
concentration) is included in the permit in accordance with the U.S. EPA Technical Support
Document for Water Quality -Based Toxics Control published in 1991.
7. When appropriate, permit writers develop facility specific compliance schedules in accordance
with the EPA Headquarters Memo dated May 10, 2007 from James Hanlon to Alexis Strauss on
40 CFR 122.47 Compliance Schedule Requirements.
The Total Chromium NC WQS was removed and replaced with trivalent chromium and
hexavalent chromium Water Quality Standards. As a cost savings measure, total chromium data
results may be used as a conservative surrogate in cases where there are no analytical results
based on chromium III or VI. In these cases, the projected maximum concentration (95th %) for
total chromium will be compared against water quality standards for chromium III and
chromium VI.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge, are
inserted into all permits with facilities monitoring for hardness -dependent metals to ensure the
accuracy of the permit limits and to build a more robust hardness dataset.
10. Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Parameter
Value
Comments (Data Source)
Average Effluent Hardness (mg/L)
26.2
Average from 5 effluent samples
[Total as, CaCO3 or (Ca+Mg)]
March — May 2018
Average Upstream Hardness (mg/L)
36.6
Average from 7 samples collected
[Total as, CaCO3 or (Ca+Mg)]
March — May 2018
7Q10 summer (cfs)
12
NPDES files, BIMS
1Q10 (cfs)
9.94
Calculated from 7Q10 summer
Permitted Flow (MGD)
1.1
NPDES files, BIMS
Date: June 21.2018
Permit Writer: Bing Bai
Page 4 of 4

Instream DO
Upstream
Downstream
Upstream
Downstream
8/4/2015
7.4
7.7
3/31 /2016
9.7
9.1
8/5/2015
7.4
7.1
4/7/2016
9.5
9.7
8/6/2015
7.2
7.1
4/14/2016
10.5
9.9
8/11 /2015
7.3
7.2
4/21 /2016
9.3
8.5
8/12/2015
7.4
7.3
4/28/2016
7.5
7.7
8/13/2015
7.9
7.5
5/5/2016
6.7
8.7
8/18/2015
7.2
5.6
5/12/2016
8.8
8.4
8/19/2015
7.3
7.2
5/19/2016
11.2
11
8/20/2015
6.9
6.7
5/26/2016
10.9
10.7
8/25/2015
7.4
7.3
6/1/2016
9.7
9.7
8/26/2015
7.6
7.5
6/2/2016
10.3
10.1
8/27/2015
7.9
7.9
6/7/2016
10.2
9.8
9/1/2015
7.7
7.4
6/8/2016
11
10.4
9/2/2015
7.5
7.3
6/9/2016
11.1
10.7
9/3/2015
7.3
7.2
6/14/2016
10.1
9.9
9/8/2015
7.4
7.1
6/15/2016
9.9
9.3
9/9/2015
7.2
7.1
6/16/2016
9.8
9.2
9/10/2015
7.1
6.8
6/21 /2016
10.6
10.1
9/15/2015
8.9
8.8
6/22/2016
10.1
9.8
9/16/2015
8.8
8.7
6/23/2016
9.9
9.4
9/17/2015
8.8
8.5
6/28/2016
8.8
8.5
9/22/2015
8.1
8.2
6/29/2016
9.9
9.7
9/23/2015
8.2
8.3
6/30/2016
9.7
9.5
9/24/2015
8.2
8.3
7/5/2016
9.5
9.2
9/29/2015
7.7
7.6
7/6/2016
9.6
9.2
9/30/2015
7.6
7.5
7/7/2016
9.8
9.3
10/1/2015
7.7
6.5
7/12/2016
9.4
9.3
10/8/2015
8.9
8.8
7/13/2016
9.6
9.3
10/15/2015
9.1
9.1
7/14/2016
9.8
9.5
10/22/2015
10.2
10
8/9/2016
9.6
9
10/29/2015
8.5
8.3
8/10/2016
9.6
9
11 /5/2015
8.8
8.5
8/11 /2016
9.7
9.3
11 /12/2015
9.1
9.2
9/20/2016
9.8
9.8
11 /19/2015
8
8
9/21 /2016
10.1
9.3
11 /25/2015
11.2
11.4
9/22/2016
9.9
9.6
12/2/2015
10.4
10
9/27/2016
9.4
8.7
12/10/2015
10.5
10.7
9/28/2016
9.9
9.6
12/17/2015
9.9
9.8
9/29/2016
10
9.8
12/23/2015
9.8
9.6
10/6/2016
11
11.2
12/30/2015
9.5
9.4
10/13/2016
12.4
12
1 /7/2016
12.4
12.3
10/20/2016
9.5
9.4
1 /14/2016
13.2
12.6
10/27/2016
12.6
12.1
1 /21 /2016
12.8
12.6
11 /3/2016
11.5
10.6
1 /28/2016
12.2
12
11 /10/2016
12.8
13.3
2/4/2016
9.8
9.6
11/17/2016
12.9
13.5
2/11 /2016
14
13.4
11 /23/2016
15.2
14.5
2/18/2016
12.8
12.3
12/1 /2016
13.9
14
2/25/2016
11
10.8
12/8/2016
14
13.2
3/3/2016
12.6
12.1
12/15/2016
15.4
14.6
3/10/2016
10.1
9.5
12/22/2016
15.2
15.1
3/17/2016
9.8
9.7
1/5/2017
15.2
14.6
3/24/2016
10.5
10
1 /12/2017
15.1
14.9

Upstream
Downstream
Upstream
Downstream
1/19/2017
14.1
14.3
8/24/2017
10
9.7
1 /26/2017
13.1
12.5
8/29/2017
10.5
9.9
2/2/2017
14.6
13.7
8/30/2017
10.7
10.4
2/9/2017
13.2
12.6
8/31 /2017
10.4
10.1
2/16/2017
14.8
14
9/5/2017
10.9
10.7
2/23/2017
12.9
12
9/6/2017
10.3
10
3/2/2017
12.9
12.1
9/7/2017
11.6
11.5
3/9/2017
14.3
13.6
9/12/2017
10.6
10.4
3/16/2017
16.6
13.4
9/13/2017
11.5
11.1
3/23/2017
14.3
13.4
9/14/2017
11.2
10.6
3/30/2017
12
11
9/19/2017
10.6
10.7
4/6/2017
11.3
11.4
9/20/2017
11.2
10.5
4/13/2017
12
11.4
9/21 /2017
10.7
10.6
4/20/2017
12.2
11.8
9/26/2017
10.9
10.8
4/27/2017
11.4
10.8
9/27/2017
10.7
10.1
5/4/2017
11.6
11.5
9/28/2017
10.2
9.8
5/11 /2017
11.3
10.9
10/5/2017
12.3
12.3
5/18/2017
10.9
10.4
10/12/2017
10.7
9.7
5/25/2017
10.7
10.6
10/19/2017
13.1
12.8
6/1 /2017
10.9
10.4
10/26/2017
13.2
12.6
6/6/2017
10.2
9.7
11 /2/2017
13.1
12.5
6/7/2017
10.7
10.4
11 /9/2017
13.1
13.1
6/8/2017
11.1
10.8
11 /16/2017
14
14
6/13/2017
10.4
10.4
11 /23/2017
15.3
14.5
6/14/2017
9.9
9.5
11/30/2017
15.3
15.3
6/15/2017
10.1
9.9
12/7/2017
13.9
13.8
6/20/2017
10.1
9.9
12/14/2017
16.3
15.8
6/21 /2017
10.6
10.1
12/21 /2017
13.6
13.1
6/22/2017
10.4
9.9
6/27/2017
10.9
10.5
6/28/2017
11.5
11
6/29/2017
11.2
10.8
7/11/2017
10.1
9.7
7/12/2017
10
9.5
7/13/2017
9.8
8.7
7/18/2017
9.8
9.3
7/19/2017
10.2
9.9
Anova: Single Factor
7/20/2017
9.9
10
7/25/2017
9.8
9.5
SUMMARY
7/26/2017
9.9
9.8
Groups
Count
Sum
Average
Variance
7/27/2017
9.7
9.5
Upstream
184
1948.4
10.5891304
4.369062
8/1/2017
10.8
10.2
Downstream
184
1888
10.2608696
3.976056
8/2/2017
9.7
10.1
8/3/2017
10.7
10.7
8/8/2017
9.4
9
ANOVA
8/9/2017
10.2
10.1
SS
df
MS
P-value F crit
8/10/2017
10.7
10.3
Between Grour
9.91347826
1
9.91347826
0.124087 3.866991
8/15/2017
9.5
9
Within Groups
1527.15652
366
4.1725588
8/16/2017
9.4
9.1
8/17/2017
10.1
9.8
Total
1537.07
367
8/22/2017
10.4
9.5
8/23/2017
10.4
9.4

MONITORING REPORT(MR) VIOLATIONS for:
Permit: NC0006190 MRs Between 1 - 2013 and 2 - 2018 Region: %
Facility Name: % Param Name % County: %
Major Minor: %
Report Date: 02/12/18 Page: 1 of 2
Violation Category% Program Category:
Subbasin:%41 Violation Action: %
PERMIT: NC0006190
FACILITY: South Fork Industries Inc - South Fork Industries -
COUNTY: Catawba
REGION: Mooresville
Maiden Plant
Limit Violation
MONITORING
OUTFALL/
VIOLATION
UNIT OF
CALCULATED
%
REPORT
PPS
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
05 -2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/13/14
3 X week
Ibs/day
325
680.3
109.3
Daily Maximum
Proceed to
Quantity Daily
Exceeded
Enforcement Case
05 -2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/15/14
3 X week
Ibs/day
325
1,237.2
280.7
Daily Maximum
Proceed to
Quantity Daily
Exceeded
Enforcement Case
05 -2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/20/14
3 X week
Ibs/day
325
742
128.3
Daily Maximum
Proceed to
Quantity Daily
Exceeded
Enforcement Case
05 -2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/21/14
3 X week
Ibs/day
325
993.4
205.7
Daily Maximum
Proceed to
Quantity Daily
Exceeded
Enforcement Case
05 -2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/22/14
3 X week
Ibs/day
325
554
70.5
Daily Maximum
Proceed to
Quantity Daily
Exceeded
Enforcement Case
05 - 2014
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/31/14
3 X week
Ibs/day
162
395.49
144.1
Monthly Average
Proceed to
Quantity Daily
Exceeded
Enforcement Case
Monitoring Violation
MONITORING
OUTFALL/
VIOLATION
UNIT OF
CALCULATED
%
REPORT
PPS
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
04 -2017
001
Effluent
BOD, 5-Day (20 Deg. C) -
04/01/17
3 X week
Ibs/day
Frequency Violation
No Action, BIMS
Quantity Daily
Calculation Error
12 -2017
001
Effluent
BOD, 5-Day (20 Deg. C) -
12/02/17
3 X week
Ibs/day
Frequency Violation
None
Quantity Daily
04 -2017
001
Effluent
Chromium, Total (as Cr)
04/01/17
Weekly
ug/I
Frequency Violation
No Action, BIMS
Calculation Error
04 - 2017
001
Effluent
Color, Spectrophoto-Metric
04/01/17
Weekly
admi unit
Frequency Violation
No Action, BIMS
Filter
Calculation Error
04 - 2017
001
Effluent
Conductivity
04/01/17
3 X week
umhos/cm
Frequency Violation
No Action, BIMS
Calculation Error
12 -2017
001
Effluent
Conductivity
12/02/17
3 X week
umhos/cm
Frequency Violation
None
04 -2017
001
Effluent
Nitrogen, Ammonia Total (as
04/01/17
3 X week
mg/I
Frequency Violation
No Action, BIMS
N) - Concentration
Calculation Error

MONITORING REPORT(MR) VIOLATIONS for: Report Date: 02/12/18 Page: 2 of 2
Permit: NC0006190 MRs Between 1 - 2013 and 2 - 2018 Region: % Violation Category:% Program Category: %
Facility Name: % Param Name % County: % Subbasin:% Violation Action:
Major Minor:
PERMIT: NC0006190 FACILITY: South Fork Industries Inc - South Fork Industries - COUNTY: Catawba REGION: Mooresville
Maiden Plant
Monitoring Violation
MONITORING OUTFALL/ VIOLATION UNIT OF CALCULATED %
REPORT PPI LOCATION PARAMETER DATE FREQUENCY MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION
12 -2017
001
Effluent
Nitrogen, Ammonia Total (as
12/02/17
3 X week
mg/I
Frequency Violation
None
N) - Concentration
04 -2017
001
Effluent
Oxygen Demand, Chem.
04/01/17
Weekly
Ibs/day
Frequency Violation
No Action, BIMS
(High Level) (COD)
Calculation Error
04 - 2017
001
Effluent
Oxygen, Dissolved (DO)
04/01/17
3 X week
mg/I
Frequency Violation
No Action, BIMS
Calculation Error
12 - 2017
001
Effluent
Oxygen, Dissolved (DO)
12/02/17
3 X week
mg/I
Frequency Violation
None
04 - 2017
001
Effluent
pH
04/01/17
3 X week
su
Frequency Violation
No Action, BIMS
Calculation Error
12 - 2017
001
Effluent
pH
12/02/17
3 X week
su
Frequency Violation
None
04-2017
001
Effluent
Phenolics, Total Recoverable
04/01/17
Weekly
Ibs/day
Frequency Violation
No Action, BIMS
Calculation Error
04 - 2017
001
Effluent
Solids, Total Suspended -
04/01/17
3 X week
Ibs/day
Frequency Violation
No Action, BIMS
Quantity Daily
Calculation Error
12 - 2017
001
Effluent
Solids, Total Suspended -
12/02/17
3 X week
Ibs/day
Frequency Violation
None
Quantity Daily
04 - 2017
001
Effluent
Sulfide, Total (as S)
04/01/17
Weekly
Ibs/day
Frequency Violation
No Action, BIMS
Calculation Error
04 - 2017
001
Effluent
Temperature, Water Deg.
04/01/17
3 X week
deg c
Frequency Violation
No Action, BIMS
Centigrade
Calculation Error
12 - 2017
001
Effluent
Temperature, Water Deg.
12/02/17
3 X week
deg c
Frequency Violation
None
Centigrade
Reporting Violation
MONITORING
OUTFALL/
VIOLATION
UNIT OF
CALCULATED %
REPORT
PPI
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT VALUE Over VIOLATION TYPE
VIOLATION ACTION
09 -2016 10/31/16 Late/Missing DMR No Action, BPJ
11 -2017 001 Effluent Temperature, Water Deg. 11/30/17 3 X week deg c Sampling Location None
Centigrade Missing

Whole Effluent Toxicity Testing and Self Monitoring Summary
Danaher (Dynapar)/004 (comb 1,2,3)
NC0001121/004
County: Bladen
Fthd24PF Begin:
1/1/2015
Ac P/F Monit: 90% Ft
NonComp:
Single
J
F M
A
M
2014
Fail
Pass Pass
2015
Pass
2016 Pass
Pass
2017
Pass
Daniel Stowe Botanical Garden
NCO088684/001
County: Gaston
Ceri7dPF Begin:
5/1/2016
Chr Monit: 90%
NonComp:
J
F M
A
M
2014
Fail
2015
Fail
2016
Pass
2017
Fail
Dare County-/002 (RO) WTP
NCO070157/002
County: Dare
Mysd24PF Begin:
2/1/2009
24hr p/f ac monit: 90
NonComp:
J
F M
A
M
2014 Pass
Pass
2015 Pass
Pass
2016 Pass
Pass
2017 Fail
-
Pass
Davidson Water Inc. WTP
NCO084425/001
County: Davidson
Ceri7dPF Begin:
10/1/2017 Chr Monit: 90%
NonComp:
J
F M
A
M
2014
Pass
Pass
2015
Fail
Fail
2016
Fail
Pass
2017
Pass
Pass
Deer Chase Subdivision WWTP
NCO063746/001
County: Wake
Ceri7dPF Begin:
6/1/2008
chr lim: 90% @ 0.05
NonComp:
Single
J
F M
A
M
2014 Pass
Pass
2015 Pass
Pass
2016 Pass
-
Pass
2017 Fail
>100 >100 >100
Pass
Delta Apparel - S. Fork NC0006190/001
Cer7dChV Begin: 5/1/2013 chr lim: 12%
J F M
2014 16.97
2015 16.97
2016 16.97
2017 17
Region: FRO
7Q10:
812.5
J
J
Fail Fail Fail
Pass Pass
Pass
Pass
Pass
Region: MRO
7Q10:
0
J
J
Fail
Fail
Pass
Fail
Region: WARO
7Q10:
Tidal
l
J
Pass
Pass
Pass
Region: WSRO
7Q10:
J J
Region: RRO
7Q10: 0.0
J J
Pass
Pass
Pass
Fail
County: Catawba Region: MRO
NonComp: Single 7Q10: 12
A M J J
16.97
16.97
16.97
16.97
Basin:
CPF16
Mar Jun Sep Dec
PF: NA
IWC:
NA
Freq: Q
A
S
O
Pass
Fail
Pass
Pass
Fail
Pass
Basin:
CTB37
Mar Jun Sep Dec
PF: 0.003 IWC:
100
Freq: Q
A
S
O
Fail
-
Fail
Fail
Pass
-
Basin:
PAS56
Jan Apr Jul Oct
PF: 1.42 IWC:
NA
Freq: Q
A
5
O
Pass
Pass
Pass
Pass
Basin:
YAD04
Feb May Aug Nov
PF: 0.3
IWC:
Freq: A
A
S
O
Pass
-
Pass
Pass
Pass
-
Basin:
NEU02
Jan Apr Jul Oct
PF: 0.05 IWC:
100
Freq: Q
A
S
O
Pass
Pass
-
-
Pass
>100
>100
Pass
Basin:
CTB35
Mar Jun Sep Dec
PF: 1.1
IWC:
11
Freq: Q
A
5
O
16.97
-
16.97
33.94
33.9
SOC JOC:
N
D
Pass
Fail
Pass
Pass
SOC JOC:
N
D
Pass
Fail
Pass
Pass
SOC JOC:
N
D
SOC JOC:
N
D
Pass
Pass
Pass
Fail
Fail
SOC JOC:
N
D
SOC-JOC:
N
D
16.97
16.97
33.94
17
Leeend: P= Fathead minnow (Pimohales oromelas). H=No Flow (facility is active). s = Split test between Certified Labs Page 29 of 105

NH3/TRC WLA Calculations
Facility: South Fork Industries, Inc.
PermitNo. NC0006190
Prepared By: Bing Bai
Enter Design Flow (MGD): 1.1
Enter s7Q10 (cfs): 12
Enter w7Q10 cfs : 25.5
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
12
s7Q10 (CFS)
12
DESIGN FLOW (MGD)
1.1
DESIGN FLOW (MGD)
1.1
DESIGN FLOW (CFS)
1.705
DESIGN FLOW (CFS)
1.705
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
12.44
IWC (%)
12.44
Allowable Conc. (ug/1)
137
Allowable Conc. (mg/1)
6.5
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
25.5
Monthly Average Limit:
200/100ml DESIGN FLOW (MGD)
1.1
(If DF >331; Monitor)
DESIGN FLOW (CFS)
1.705
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
8.04 Upstream Bkgd (mg/1)
0.22
IWC (%)
6.27
Allowable Conc. (mg/1)
25.4
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals)
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis)
If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

7/26/18 WQS = 12 ng/L
Facility Name
South Fork Industries, Inc. / NC0006190
/Permit No. :
Total Mercury 1631E PQL = 0.5 ng/L
Date Modifier Data Entry Value
7/11/18 2.4 2.4
MERCURY WQBEL/TBEL EVALUATION V:2013-6
No Limit Required
No MMP Required
7Q10s = 12.000 cfs WQBEL = 96.46 ng/L
Permitted Flow = 1.100 47 ng/L
2.4 ng/L - Annual Average for 2018

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Proiect Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfal I
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑CHECK IF HQW OR ORW WQS
South Fork Industries, Inc.
3
NC0006190
001
1.100
Clark Creek
03050102
C
❑Apply WS Hardness WQC
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
12.00
25.50
34.00
78.00
9.94
Effluent Hardness
--------------------------------
Upstream Hardness
.------------
Combined Hardness Chronic
Acte
Combined Hardness u
26.16 mg/L (Avg)
36.64 mg/L (Avg)
---------- -----
35.34 m /L
I 35.11 m /L
Data Source(s)
❑CHECK TO APPLY MODEL
Par01
Par02
Par03
Par04
Par05
Par06E
Par07
ParOB
ParO9
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Part B
Par19
Par20
Par21
Par22
Par23
Par24
Table 2. Parameters of Concern
Name WQS Type Chronic Modifier Acute PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
Water Supply
C
10
HH/WS
N/A
ug/L
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
0.7664
FW
4.3575
ug/L
Chlorides
Aquatic Life
NC
230
FW
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
156.3151
FW
1195.2608
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
Ng/L
Copper
Aquatic Life
NC
10.5926
FW
14.4202
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
4.3381
FW
110.5097
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Human Health
NC
2000
HH
ug/L
Nickel
Aquatic Life
NC
49.8967
FW
446.7574
pg/L
Nickel
Water Supply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
0.5315
ug/L
Zinc
Aquatic Life
NC
169.9220
FW
167.6106
ug/L
NC0006190 RPA, input
6/21 /2018

NC0006190 RPA, input
6/21 /2018

South Fork Industries, Inc. -
NC0006190 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM
Qw (MGD) = 1.10
1Q10S (cfs) = 9.94
7Q10S (cfs) = 12.00
7Q10W (cfs) = 25.50
30Q2 (cfs) = 34.00
Avg. Stream Flow, QA (cfs) = 78.00
Receiving Stream: Clark Creek HUC 03050102
DATA POINTS = 58
WWTP/WTP Class: 3
IWC% @ 1Q10S = 14.64147703
1WC% @ 7Q10S = 12.44071507
IWC% @ 7Q10W = 6.267230289
1WC% @ 30Q2 = 4.775241563
IW%C @ QA = 2.139138072
Stream Class: C
Outfall 001
Qw = 1.1 MGD
COMBINED HARDNESS (m¢/L)
Acute = 35.11 mg/L
Chronic = 35.34 mg/L
PARAMETER
NC STANDARDS OR EPA CRITERIA
(n
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
d
�
Chronic Acute Applieda
n # Det. Max Pred Cw Allowable Cw
(1)
M
Standard
Acute (FW): 2,322.2
No RP, Predicted Max < 50% of Allowable Cw - No
Arsenic
C
150 FW(7Q10s) 340
ug/L
Monitoring required
1 0 NO DETECTS
Chronic (FW): 1,205.7
No RP, Predicted Max < 50% of Allowable Cw - No
Max MDL = 5
Monitoring required
Arsenic
C
10 HH/WS(Qavg)
ug/L
Note: n 5 9
Chronic (HH): 467.5
Limited data set
Max MDL = 5
Acute: 443.94
Beryllium
NC
6.5 FW(7Q10s) 65
ug/L
1 0 NO DETECTS
Note: n < 9
Chronic: 52.25
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
Max MDL = 1
Monitoring required
Acute: 29.761
Cadmium
NC
0.7664 FW(7Q10s) 4.3575
ug/L
1 0 No DETECTS
Note: n < 9
Chronic: 6.160
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
Max MDL = 2
Monitoring required
Acute: NO WQS
Chlorides
NC
230 FW(7Q10s)
mg/L
6 6 81.3
Note: n < 9 Default C.V.
_ _ _ _ _ _ _ _ _ _ _
Chronic 1,848.8
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
No value > Allowable Cw
Monitoring required
Acute: NO WQS
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
1 1 180.0
No RP, Predicted Max < 50% of Allowable Cw - No
Note: n < 9 Default C.V.
_
Chronic 6,282.4
Limited data se
jNo value > Allowable Cw
Monitoring required
Acute: 8,163.5
Chromium III
NC
156.3151 FW(7Q10s) 1195.2608
µg/L
0 0
N/A
_
-- Chronic- - 1,256.5
-
- - - - - - - -
Acute: 109.3
all total chromium are < 5 ug/L
Chromium VI
NC
11 FW(7Q10s) 16
µg/L
0 0
N/A
__ _ _ ____ _ _
Chronic: 88.4
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chromium, Total
NC
µg/L
21 0
NO DETECTS
a. No Monitoring required if all Total Chromium
samples are < the Chromium A Allowable Cw
Max MDL = 5
Acute: 98.49
Copper
NC
10.5926 FW(7Q10s) 14.4202
ug/L
5 5 74.24
Note: n < 9 Default C.V.
Chronic: 85.14
No RP , Predicted Max >_ 50% of Allowable Cw -
Limited data set
JNo value > Allowable Cw
apply Quarterly Monitoring
NC0006190 RPA, rpa
Page 1 of 2 8/2/2018

South Fork Industries, Inc.
Outfall 001
N0000619U Freshwater RPA - 95% Probability/95%
Confidence Using Metal
Translators Qw = 1.1 MUD
Acute: 150.3
Cyanide NC 5 FW(7Q10s) 22 10
ug L 1 1 13.0
_ _ _ _ _I_ _
_ _ _ _ _ _ _ _ _ _ _ _ _
Note: n < 9 Default C.V.
Chronic: 40.2
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
No value > Allowable Cw
Monitoring required
Acute: NO WQS
Fluoride
NC
1800 FW(7Q10s)
ug/L
1 1 186.0
Note: n < 9 Default C.V.
_
Chronic 14,468.6
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
No value > Allowable Cw
Monitoring required
Acute: 754.772
Lead
NC
4.3381 FW(7Q10s) 110.5097
ug/L
1 0 NO DETECTS
Note: n < 9
_ _ _ _ _ _ _ _
Chronic: 34.870
No RP, Predicted Max < 50% of Allowable Cw - No
Limited data set
Max MDL = 5
Monitoring required
Acute (FW): 3,051.3
Nickel
NC
49.8967 FW(7Q10s) 446.7574
µg/L
1 0
NO DETECTS
_ -------------------------------------------
Chronic (FW): 401.1
No RP, Predicted Max < 50% of Allowable Cw - No
Note: n s 9
Max MDL = 5
Monitoring required
Nickel
NC
25.0000 WS(7Q10s)
µg/L
Limited data set
Chronic (WS): 201.0
Max MDL = 5
Acute: 382.5
]No
Selenium
NC
5 FW(7Q10s) 56
ug/L
1 0
NO DETECTS
Note: n <_ 9
_ _ _ _ _ _ _
Chronic: 40.2
_ _ _ _ _ _ _ _ _ _ _ _ _
RP, Predicted Max < 50% of Allowable Cw - No
Limited data sel
Max MDL = 5
Monitoring required
Silver
NC
0.06 FW(7Q10s) 0.5315
ug/L
1 0 NO DETECTS
Acute: 3.630
No detects
Note: n <_ 9
Chronic: 0.482
Permittee shall sample to lower PQL at 1 ug/L, no
Limited data set
Max MDL = 5
limit or monitoring is required
Acute: 1,144.8
Zinc
NC
169.9220 FW(7Q10s) 167.6106
ug/L
12 12
648.0
Chronic:1,365.9
No RP, Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring required
NC0006190 RPA, rpa
Page 2 of 2 8/2/2018

H1
REASONABLE POTENTIAL ANALYSIS
H2
Use "PASTE SPECIAL
Effluent Hardness Values" then "COPY" Upstream Hardness
Maximum data
points = 58
Date
Data BDL=1/2DL
Results
1
3/29/2018
21
21
Std Dev.
2
4/4/2018
50
50
Mean
3
4/18/2018
21
21
C.V. (default)
4
5/10/2018
18.4
18.4
n
5
5/17/2018
20.4
20.4
10th Per value
6
Average Value
7
Max. Value
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Date
Data BDL=1/2DL
Results
13.3697
1
3/29/2018
44
44.1
Std Dev.
26.1600
2
4/5/2018
21
21
Mean
0.6000
3
4/19/2018
43
43
C.V. (default)
5
4
4/26/2018
28
28.1
n
19.20 mg/L
5
5/3/2018
47
46.8
10th Per value
26.16 mg/L
6
5/10/2018
45
44.9
Average Value
50.00 mg/L
7
5/17/2018
29
28.6
Max. Value
8
9
10
11
12
13
14
15
16
17
18
19
20
21
ParO'
Use "PASTE SPECIAL
Values" then "COPY"
Maximum data
points = 58
1
10.4062
36.6429
2
0.6000
3
7
4
25.26 mg/L
5
36.64 mg/L
6
46.80 mg/L
7
NC0006190 RPA, data
- 1 - 8/2/2018
8
9
10
11
12
13
14
15
16
17
18
19
20
21

REASONABLE POTENTIAL ANALYSIS
1 & Par02
Use "PASTE SPECIAL
Arsenic Values" then "COPY"
Maximum data
points = 58
Date Data BDL=1/2DL Results
8/24/2015 < 5 2.5 Std Dev. N/A
Mean 2.5000
C.V. 0.0000
n 1
Mult Factor = 1.00
Max. Value 2.5 ug/L
Max. Pred Cw O DETECTS ug/L
NC0006190 RPA, data
- 2 - 8/2/2018

Par03
REASONABLE POTENTIAL ANALYSIS
Par04
Use "PASTE SPECIAL
Beryllium Values" then "COPY"
Maximum data
points = 58
Date Data BDL=1/2DL Results
1 8/24/2015 < 1 0.5 Std Dev
2 Mean
3 C.V.
4 n
5
Cadmium
Date Data BDL=1/2DL Results
N/A 1 8/24/2015 < 2 1 Std Dev
0.5000 2 Mean
0.0000 3 C.V.
1 4 n
5
Use "PASTE SPECIAL
Values" then "COPY"
Maximum data
points = 58
N/A
1.0000
0.0000
1
6 Mult Factor = 1.00 6 Mult Factor = 1.00
7 Max. Value 0.50 ug/L 7 Max. Value 1.000 ug/L
8 Max. Pred Cw O DETECTS ug/L 8 Max. Pred Cw O DETECTS ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
9
10
11
12
13
14
15
16
17
18
19
20
21
ParO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
NC0006190 RPA, data
-3- 8/2/2018

5
REASONABLE POTENTIAL ANALYSIS
Par07
Use "PASTE SPECIAL -
Chlorides
Values" then "COPY".
Total Phenolic Compounds
Maximum data points =
58
Date Data
BDL=1/2DL
Results
Date Data BDL=1/2DL
Results
12/13/2016
38
38
Std Dev.
8.7101
1 8/24/2015 180.0 180.0
Std Dev.
3/14/2017
17
17
Mean
21.7
2
Mean
6/6/2017
23
23
C.V. (default)
0.6000
3
C.V.
9/5/2017
18
18
n
6
4
n
3/18/2018
13
13
5
6/5/2018
21
21
Mult Factor =
2.1
6
Mult Factor =
Max. Value
38.0 mg/L
7
Max. Value
Max. Pred Cw
81.3 mg/L
8
Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
NC0006190 RPA, data
- 4 - 8/2/2018

Use "PASTE SPECIAL
Values" then "COPY"
Maximum data
points = 58
N/A
180.0000
0.0000
1
1.00
180.0 ug/L
180.0 ug/L
REASONABLE POTENTIAL ANALYSIS
Par10
Chromium, Total
Use "PASTE SPECIAL.
Values" then "COPY"
Pal
Copper
Maximum data
points = 58
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL Results
1
10/25/2017
<
5
3
Std Dev.
0.0000
1
12/13/2016
29
29 Std Dev.
2
10/18/2017
<
5
3
Mean
2.5000
2
3/14/2017
32
32 Mean
3
10/11/2017
<
5
3
C.V.
0.0000
3
9/5/2017
23
23 C.V. (default)
4
10/4/2017
<
5
3
n
21
4
3/18/2018
24
24 n
5
9/27/2017
<
5
3
5
6/5/2018
30
30
6
9/20/2017
<
5
3
Mult Factor =
1.00
6
Mult Factor =
7
9/13/2017
<
5
3
Max. Value
2.5 fag/L
7
Max. Value
8
9/6/2017
<
5
3
Max. Pred Cw
O DETECTS pg/L
8
Max. Pred Cw
9
8/30/2017
<
5
3
9
10
8/23/2017
<
5
3
10
11
8/16/2017
<
5
3
11
12
8/9/2017
<
5
3
12
13
8/2/2017
<
5
3
13
14
7/26/2017
<
5
3
14
15
7/19/2017
<
5
3
15
16
7/12/2017
<
5
3
16
17
6/28/2017
<
5
3
17
18
6/21 /2017
<
5
3
18
19
6/14/2017
<
5
3
19
20
6/7/2017
<
5
3
20
21
5/31 /2017
<
5
3
21
NC0006190 RPA, data
-5- 8/2/2018

Par12
Use "PASTE SPECIAL
Values" then "COPY"
Maximum data
points = 58
REASONABLE POTENTIAL ANALYSIS
Par13
Use "PASTE SPECIAL
Cyanide Values" then "COPY"
Maximum data
points = 58
Date Data BDL=1/2DL Results
3.9115 1 8/26/2015 13 13 Std Dev. N/A
27.6000 2 Mean
0.6000 3 C.V.
5 4 n
5
2.32 6 Mult Factor =
32.00 ug/L 7 Max. Value
74.24 ug/L 8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
I't3
13.00
0.0000
1
1.00
13.0 ug/L
13.0 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Fluoride
Date Data BDL=1/2DL Results
186 186 Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
NC0006190 RPA, data
8/2/2018

Par14
Use "PASTE SPECIAL
Values" then "COPY"
Maximum data
points = 58
REASONABLE POTENTIAL ANALYSIS
Use "PASTE SPECIAL
Lead Values" then "COPY"
Maximum data
points = 58
Date Data BDL=1/2DL Results
N/A 1 8/24/2015 < 5 2.5 Std Dev. N/A
186.0000 2 Mean 2.5000
0.0000 3 C.V. 0.0000
1 4 n 1
5
1.00 6 Mult Factor = 1.00
186.0 ug/L 7 Max. Value 2.500 ug/L
186.0 ug/L 8 Max. Pred Cw O DETECTS ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
-7-
Par17 & Par18
Nickel
Date Data BDL=1/2DL Results
1 8/24/2015 < 5
2.5 Std Dev.
2
Mean
3
C.V.
4
n
5
6
Mult Factor =
7
Max. Value
8
Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
NC0006190 RPA, data
8/2/2018

REASONABLE POTENTIAL ANALYSIS
Use "PASTE
Par19
SPECIAL -Values"
Use "PASTE SPECIAL
then "COPY".
Selenium
es" then "COPY"
Values"
Maximum data points
Maximum data
- 58
points = 58
Date
1 8/24/2015
Data BDL=1/2DL Results
< 5 2.5 Std Dev.
N/A
N/A
2.5000
2
Mean
2.5000
0.0000
3
C.V.
0.0000
1
4
n
1
5
1.00
6
Mult Factor =
1.00
2.5 pg/L
7
Max. Value
2.5 ug/L
O DETECTS pg/L
8
Max. Pred Cw
JO DETECTS ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
Par20
Silver
Date Data BDL=1/2DL Results
1 8/24/2015 < 5 2.5 Std Dev.
2 Mean
3 C.V.
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
NC0006190 RPA, data
8/2/2018

REASONABLE POTENTIAL ANALYSIS
Par21
Use "PASTE SPECIAL Use "PASTE SPECIAL -
Values" then "COPY" Zinc Values" then "COPY".
Maximum data Maximum data points =
points = 58 1 58
1
Date
3/22/2016
Data
405
BDL=1/2DL Results
405 Std Dev.
124.0128
N/A
2.5000
2
3/4/2015
322
322 Mean
213.7667
0.0000
3
12/8/2015
303
303 C.V.
0.5801
1
4
9/1/2015
282
282 n
12
5
6/2/2015
280
280
1.00
6
12/13/2016
212
212 Mult Factor =
1.60
2.500 ug/L
7
9/27/2016
168
168 Max. Value
405.0 ug/L
O DETECTS ug/L
8
3/14/2017
154
154 Max. Pred Cw
648.0 ug/L
9
9/5/2017
54
54
10
6/6/2017
48
48
11
6/21 /2016
25
25.2
12
8/24/2015
312
312
13
14
15
16
17
18
19
20
21
NC0006190 RPA, data
- 9 - 8/2/2018