NC0085928_Fact Sheet_20210428

DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES NC0085928
Renewal Review Jan2021
Table 1 - Facility Information
Applicant/Facility Name:
American Truetzschler Inc.
Applicant Address:
P. O. Box 669228; Charlotte NC 28256
Permittee Contact:
Mike Stanforth, Principal Engineer [704-399-2541]
Facility Address:
12300 Moores Chapel Road; Charlotte, NC 28214
Permitted Flow
0.050 MGD
Type of Waste:
Groundwater Remediation (GW-REM) for chlorinated solvents
Facility/Permit Status:
Class PC-1, physical -chemical /Active; Renewal
County:
Mecklenburg County
Miscellaneous
Receiving Stream:
UT to the
Catawba River
Stream Classification:
WS-IV; CA
Stream Segment:
11-117
WET Testing
Yes
Subbasin:
03-08-34
Stream Index No.
11-(117)
Drainage Area (mi2):
—
303(d) Listed?
Yes, low pH
Summer 7Q10 (cfs)
0.0
Regional Office:
Mooresville
Winter 7Q10 (cfs):
0.0
State Grid / USGS Quad:
F 14SE / Mt. Holly, NC
30Q2 (cfs)
0.0
Permit Writer:
Joe R. Corporon, P.G.
Average Flow (cfs):
0.0
Date:
21Jan2021
IWC (%):
100%
HUC:
03050101
BACKGROUND
American Truetzschler Inc. (ATI) was first issued an NPDES permit in December 1996 for its
Groundwater Remediation System (GW-REM) to address an aquifer contaminated with chlorinated
solvents. The original permit was issued applying EPA -based water -quality standard daily maximum (DM)
limits for:
• 1,1-Dichloroethylene
• 1,2-Dichloroethane
• Trichloroethylene
Subsequent renewals added more analytes as:
• 1,1-Dichloroethane (1,1 DCA)
• 1,1,1-Trichloroethane (1,1,1 TCA)
• Tetrachloroethylene (PCE)
Changes to the previous permit. The renewal application offers no changes in the treatment system since
last renewal. Past activities have included replacing activated -carbon filter canisters with cation -exchange
resin canisters as intermediate polishing of the effluent (see Flow Narrative). The Permittee routinely
provides for offsite disposal of spent cation resin, spent limestone, and spent filters.
System Flow Narrative. Three groundwater (GW) recovery wells transfer groundwater to a collection
tank. Once full the tank is pumped through a filter into an air -stripper system; thence pumped through
cation -exchangers and limestone filters. Treated waters then flow through a final compost filter and into a
retention pond; thence discharged to a ditch via a hand -operated valve, normally closed. A meter at the
outfall records final effluent flow, discharging under zero -flow receiving -stream conditions, to an unnamed
tributary (UT) to the Catawba River. Note that ditch water may likely percolate into the subsurface before
it reaches the Catawba River.
(1,1 DCE)
(1,2 DCA)
(TCE)
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 1 of 8

There were several periods during which no discharged occurred but were not reported. For renewal
therefore, DWR will insert a standard footnote to the effluent table requiring a DMR submittal stating "No
Flow" for periods of non -discharge [see Section A. (1.)].
Receiving Stream Conditions. Much of the treated discharge may absorb into the subsurface prior to
reaching the Catawba River, a class WS-IV, CA stream within the Catawba River Basin. This segment of
the Catawba River is impaired for low pH (as are adjacent segments above and below). DWR Planning is
evaluating low pH but has recommended no action to date.
DATA REVIEW
Whole Effluent Toxicity (WET) Testing. WET tests [TGP3B] have failed in the recent past [7 of
26 since 2016]. Because of recent failures in November and December 2020, retests were
performed in January 2021. After early failures in 2011, ATI cooperated with the regional office
and the state lab (MRO and ATB), to concluded that WET -test failures likely stemmed from low
nutrient levels [effluent too clean] and responded by installing compost filters designed to replace
effluent nutrients. Subsequent failures (TGP3B) have occurred:
• in 2016 (January and November) requiring retesting in months following
• In 2018 (February)
• In 2020 (November), retesting (TH3B) in January 2021
Compliance. One NOV issued (Apr2020) for non-compliance, notably a frequency violation for
failure to monitor pH in September 2019 (see attached DWR Review Record). The Regional
Office feels this operation has demonstrated efficiency in meeting its objectives and maintaining
its compliance and recommends renewing this permit.
REASONABLE POTENTIAL ANALYSIS (RPA)
An EPA -approved reasonable potential analysis was conducted on effluent data (see above list of
parameters). All concentrations were reported below the practical quantitation limits (PQLs) of
the test methods conducted except for the parameter PCE.
ATI's analytical databases for chlorinated hydrocarbons do not show reasonable potential (RP)
except for the parameter Tetrachloroethene (PCE). PCE does show RP (Maximum Predicted
exceeds the Allowable Concentration), based on one effluent detection.
Permit Renewal Changes: Based on the above evaluation, DWR has relaxed permit monitoring for
POCs from Monthly to Quarterly except for PCE, to remain Monthly requiring a limit of 0.35
ug/L [see section A. (1.)]. DWR feels that, despite relaxing the monitoring frequency, monitoring
of all POCs should continue as prudent in favor of protecting the environment considering
• a receiving stream classed as WS-IV; CA (water supply / habitat critical area),
• a waterbody impaired for pH, and
• analytes classified as carcinogenic.
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 2 of 8

In accord with current Permitting Guidance, the reported flow of 0.02414 MGD (July2020) will
be used for RPA calculations (see Table 3) as the "monthly average maximum flow" during the
most recent four (4) years. Year 2016 flows (Table 2) is hereby ignored as less reflective of
current remediation discharge conditions.
Table 2 -- Flow Summary by Year in Million Gallons per Day (MGD):
YEAR
MAX
MIN
AVE
N
Total Gallons
2016
0.03157
0.031570
0.03157
74
2.33618
2017
0.03350
0.000030
0.01152
51
0.58761
2018
0.03230
0.000048
0.00980
59
0.57772
2019
0.02936
0.000033
0.00130
63
0.81914
2020
0.04050
0.000003
0.01302*
55 [thru 24Nov]
0.17626
*Year 2016 flows are hereby ignored as less reflective of current discharge conditions.
Table 3 - Monthly Averages for Year 2020 - Highest Flow (see Table 2)
Month
Average Flow
Comments
Jan
0.1223
Feb
0.01097
Mar
0.00851
Apr
0.01615
May
0.01596
Jun
0.02032
Jul
0.02414
Highest Monthly Average
Aug
0.00970
Sept
No discharge
Oct
0.00847
Nov
0.00048
Dec
No discharge
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice:
[Tentative] Permit Scheduled to Issue:
[Tentative] Effective date
January 27, 2021
March 10, 2021
April 1, 2021
Fact Sheet - Renewal Jan2021
NPDES NC00 85928
Page 3 of 8

DWR / NPDES CONTACT
If you have any questions about the above information or on the attached draft permit, please contact
Joe R. Corporon, P.G. at [[e-mail]]
NAME:
DATE: 22JAN202 1
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 Quality Standards/Aquatic Life Protection
Parameter
Acute FW, µg/1
(Dissolved)
Chronic FW,
µg/1
(Dissolved)
Acute SW, µg/1
(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. Lalculatiga = 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 2B.0200 (e.g., arsenic at 10 µg/1 for human health protection; cyanide at 5
µg/L and fluoride at 1.8 mg/L for aquatic life protection).
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 4 of 8

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/1
Cadmium, Acute
WER*{1.136672-[ln hardness](0.041838)} • e^{0.9151 [In hardness]-3.1485}
Cadmium, Acute Trout waters
WER*{1.136672-[ln hardness](0.041838)} • e^{0.9151[ln hardness]-3.6236}
Cadmium, Chronic
WER*{1.101672-[ln hardness](0.041838)} • e^{0.7998[ln hardness]-4.4451}
Chromium III, Acute
WER*0.316 • e^{0.8190[ln hardness]+3.7256}
Chromium III, Chronic
WER*0.860 . e^{0.8190[ln hardness]+0.6848}
Copper, Acute
WER*0.960 • e^{0.9422[ln hardness]-1.700}
Copper, Chronic
WER*0.960 . e^{0.8545[ln hardness]-1.702}
Lead, Acute
WER*{1.46203-[ln hardness](0.145712)} • e^{1.273[ln hardness]-1.460}
Lead, Chronic
WER*{1.46203-[ln hardness](0.145712)} • e^{1.273[ln hardness]-4.705}
Nickel, Acute
WER*0.998 • e^{0.8460[ln hardness]+2.255}
Nickel, Chronic
WER*0.997 • e^{0.8460[ln hardness]+0.0584}
Silver, Acute
WER*0.85 • e^{1.72[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/WQBELs 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.
Fact Sheet - Renewal Jan2021
NPDES NC00 85928
Page 5 of 8

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, 7Q10 (the spreadsheet automatically
calculates the 1Q10 using the formula 1Q10 = 0.843 (s7Q10, cfs) a993
• 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.
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) x (s7Q10, cfs *Avg. Upstream Hardness,
mg/L)
(Permitted Flow, cfs + s7Q10, 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.
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 6 of 8

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 =
Ctotal
1
1 + { [Kpo] [SS(I+a)] [10-6] 1
Where:
ss = in -stream suspended solids concentration [mg/1], 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
..1__1_1__1_,] 1- -n,--
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 = (s7Q10 + Qw) (Cwqs) — (s7Q10) (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 s7Q10)
s7Q10 = 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 s7Q10 may be incorporated as applicable:
1 Q 10 = used in the equation to protect aquatic life from acute toxicity
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
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 7 of 8

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.
8. 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)
[Total as, CaCO3 or (Ca+Mg)]
N/A
No RPA necessary
Average Upstream Hardness
(mg/L)
[Total as, CaCO3 or (Ca+Mg)]
N/A
No RPA necessary
7Q10 summer (cfs)
N/A
No RPA necessary
1 Q 10 (cfs)
N/A
No RPA necessary
Permitted Flow (MGD)
N/A
No RPA necessary
Fact Sheet — Renewal Jan2021
NPDES NC00 85928
Page 8 of 8

2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK TO APPLY MODEL
❑ CHECK IF HQW OR ORW
American Truetzschler
PC-1
NC0085928
001
0.02414
UT to the Catawba River
WS-IV; CA
0.00
0.00
0.00
0.00
0.00
0.02414 MGD = highest Monthly Average flow
(eDMR data JuI2020) durning previous permit cycle
[see Fact Sheet, Table 3]; this flow used by RPA as
conservative to protect the environment.
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic
Modifier Acute
PQL Units
1,1-Dichloroethane (1,1 DCA)
C
6
WS
6
0.4
pg/L
1,2-Dichloroethane (1,2 DCA)
C
9.9
WS
9.9
0.4
pg/L
1,1-Dichloroethylene (1,1 DCE)
NC
300
WS
300
0.4
pg/L
1,1,1 Trichloroethane (TCA)
C
10,000
WS
10,000
0.4
pg/L
Tetrachloroethylene (PCE)
C
0.7
WS
0.7
0.4
pg/L
Trichloroethylene (TCE)
C
2.5
WS
2.5
0.4
pg/L
85928 RPA solvents 15Mar2021, input
3/15/2021

REASONABLE POTENTIAL ANALYSIS
1,1-Dichloroethane (1,1 DCA)
Date Data BDL=1/2DL Results
1 2016 < 0.26 0.2 Std Dev. 0.0000
2 2016 < 0.26 0.2 Mean 0.2000
3 2016 < 0.259 0.2 C.V. 0.0000
4 2016 < 0.26 0.2 n 57
5 2016 < 0.26 0.2
6 2016 < 0.26 0.2 Mult Factor = 1.0000
7 2016 < 0.259 0.2 Max. Value 0.2 pg/L
8 2016 < 0.259 0.2 Max. Pred Cw 0 DETECTS pg/L
9 2016 < 0.259 0.2
10 2016 < 0.259 0.2
11 2016 < 0.259 0.2
12 2016 < 0.259 0.2
13 2017 < 0.259 0.2
14 2017 < 0.259 0.2
15 2017 < 0.259 0.2
16 2017 < 0.259 0.2
17 2017 < 0.259 0.2
18 2017 < 0.259 0.2
19 2017 < 0.259 0.2
20 2017 < 0.259 0.2
21 2017 < 0.259 0.2
22 2017 < 0.259 0.2
23 2017 < 0.259 0.2
24 2018 < 0.259 0.2
25 2018 < 0.259 0.2
26 2018 < 0.259 0.2
27 2018 < 0.259 0.2
28 2018 < 0.259 0.2
29 2018 < 0.259 0.2
30 2018 < 0.259 0.2
31 2018 < 0.259 0.2
32 2018 < 0.259 0.2
33 2018 < 0.259 0.2
34 2018 < 0.259 0.2
35 2018 < 0.259 0.2
36 2019 < 0.259 0.2
37 2019 < 0.259 0.2
38 2019 < 0.259 0.2
39 2019 < 0.259 0.2
40 2019 < 0.259 0.2
41 2019 < 0.259 0.2
42 2019 < 0.309 0.2
43 2019 < 0.259 0.2
44 2019 < 0.259 0.2
45 2019 < 0.259 0.2
46 2019 < 0.259 0.2
47 2019 < 0.259 0.2
48 2020 < 0.259 0.2
49 2020 < 0.259 0.2
50 2020 < 0.259 0.2
51 2020 < 0.1 0.2
52 2020 < 0.1 0.2
53 2020 < 0.1 0.2
54 2020 < 0.1 0.2
55 2020 < 0.1 0.2
56 2020 < 0.1 0.2
57 2020 < 0.1 0.2
58
Values" then "COPY"
. Maximum data
points = 58
85928 RPA solvents 15Mar2021, data
- 1 - 3/15/2021

REASONABLE POTENTIAL ANALYSIS
1,2-Dichloroethane (1,2 DCA)
Date Data BDL=1/2DL Results
1 2016 < 0.36 0.2 Std Dev. 0.0000
2 2016 < 0.36 0.2 Mean 0.2000
3 2016 < 0.361 0.2 C.V. 0.0000
4 2016 < 0.36 0.2 n 57
5 2016 < 0.36 0.2
6 2016 < 0.36 0.2 Mult Factor = 1.0000
7 2016 < 0.361 0.2 Max. Value 0.2 pg/L
8 2016 < 0.361 0.2 Max. Pred Cw 0 DETECTS pg/L
9 2016 < 0.361 0.2
10 2016 < 0.361 0.2
11 2016 < 0.361 0.2
12 2016 < 0.361 0.2
13 2017 < 0.361 0.2
14 2017 < 0.361 0.2
15 2017 < 0.361 0.2
16 2017 < 0.361 0.2
17 2017 < 0.361 0.2
18 2017 < 0.361 0.2
19 2017 < 0.361 0.2
20 2017 < 0.361 0.2
21 2017 < 0.361 0.2
22 2017 < 0.361 0.2
23 2017 < 0.361 0.2
24 2018 < 0.361 0.2
25 2018 < 0.361 0.2
26 2018 < 0.361 0.2
27 2018 < 0.361 0.2
28 2018 < 0.361 0.2
29 2018 < 0.361 0.2
30 2018 < 0.361 0.2
31 2018 < 0.361 0.2
32 2018 < 0.361 0.2
33 2018 < 0.361 0.2
34 2018 < 0.361 0.2
35 2018 < 0.361 0.2
36 2019 < 0.361 0.2
37 2019 < 0.361 0.2
38 2019 < 0.361 0.2
39 2019 < 0.361 0.2
40 2019 < 0.361 0.2
41 2019 < 0.361 0.2
42 2019 < 0.361 0.2
43 2019 < 0.361 0.2
44 2019 < 0.361 0.2
45 2019 < 0.361 0.2
46 2019 < 0.361 0.2
47 2019 < 0.361 0.2
48 2020 < 0.361 0.2
49 2020 < 0.361 0.2
50 2020 < 0.361 0.2
51 2020 < 0.0819 0.2
52 2020 < 0.0819 0.2
53 2020 < 0.0819 0.2
54 2020 < 0.0819 0.2
55 2020 < 0.0819 0.2
56 2020 < 0.0819 0.2
57 2020 < 0.0819 0.2
58
Values" then "COPY"
. Maximum data
points = 58
1,1-Dichloroethylene (1,1 DCE)
Date Data BDL=1/2DL Results
1 2016 < 0.4 0.2 Std Dev. 0.4983
2 2016 < 0.4 0.2 Mean 0.2697
3 2016 < 0.398 0.2 C.V. 1.8475
4 2016 < 0.4 0.2 n 57
5 2016 < 0.4 0.2
6 2016 < 0.4 0.2 Mult Factor = 1.0100
7 2016 < 0.398 0.2 Max. Value 4.0 pg/L
8 2016 < 0.398 0.2 Max. Pred Cw 4.0 pg/L
9 2016 0.415 0.415
10 2016 < 0.398 0.2
11 2016 < 0.398 0.2
12 2016 < 0.398 0.2
13 2017 < 0.398 0.2
14 2017 < 0.398 0.2
15 2017 < 0.398 0.2
16 2017 < 0.398 0.2
17 2017 < 0.398 0.2
18 2017 < 0.398 0.2
19 2017 < 0.398 0.2
20 2017 < 0.398 0.2
21 2017 < 0.398 0.2
22 2017 < 0.398 0.2
23 2017 < 0.398 0.2
24 2018 < 0.398 0.2
25 2018 < 0.398 0.2
26 2018 < 0.398 0.2
27 2018 < 0.398 0.2
28 2018 < 0.398 0.2
29 2018 < 0.398 0.2
30 2018 < 0.398 0.2
31 2018 < 0.398 0.2
32 2018 < 0.398 0.2
33 2018 < 0.398 0.2
34 2018 < 0.398 0.2
35 2018 < 0.398 0.2
36 2019 < 0.398 0.2
37 2019 < 0.398 0.2
38 2019 < 0.398 0.2
39 2019 < 0.398 0.2
40 2019 < 0.398 0.2
41 2019 < 0.398 0.2
42 2019 3.96 3.96
43 2019 < 0.398 0.2
44 2019 < 0.398 0.2
45 2019 < 0.398 0.2
46 2019 < 0.398 0.2
47 2019 < 0.398 0.2
48 2020 < 0.398 0.2
49 2020 < 0.398 0.2
50 2020 < 0.398 0.2
51 2020 < 0.188 0.2
52 2020 < 0.188 0.2
53 2020 < 0.188 0.2
54 2020 < 0.188 0.2
55 2020 < 0.188 0.2
56 2020 < 0.188 0.2
57 2020 < 0.188 0.2
58
Values" then "COPY"
. Maximum data
points = 58
85928 RPA solvents 15Mar2021, data
- 2 - 3/15/2021

REASONABLE POTENTIAL ANALYSIS
1,1,1 Trichloroethane (TCA)
Date Data BDL=1/2DL Results
1 2016 < 0.32 0.2 Std Dev.
2 2016 < 0.32 0.2 Mean
3 2016 < 0.319 0.2 C.V.
4 2016 < 0.32 0.2 n
5 2016 < 0.32 0.2
6 2016 < 0.32 0.2
7 2016 < 0.319 0.2
8 2016 < 0.319 0.2
9 2016 < 0.319 0.2
10 2016 < 0.319 0.2
11 2016 < 0.319 0.2
12 2016 < 0.319 0.2
13 2017 < 0.319 0.2
14 2017 < 0.319 0.2
15 2017 < 0.319 0.2
16 2017 < 0.319 0.2
17 2017 < 0.319 0.2
18 2017 < 0.319 0.2
19 2017 < 0.319 0.2
20 2017 < 0.319 0.2
21 2017 < 0.319 0.2
22 2017 < 0.319 0.2
23 2017 < 0.319 0.2
24 2018 < 0.319 0.2
25 2018 < 0.319 0.2
26 2018 < 0.319 0.2
27 2018 < 0.319 0.2
28 2018 < 0.319 0.2
29 2018 < 0.319 0.2
30 2018 < 0.319 0.2
31 2018 < 0.319 0.2
32 2018 < 0.319 0.2
33 2018 < 0.319 0.2
34 2018 < 0.319 0.2
35 2018 < 0.319 0.2
36 2019 < 0.319 0.2
37 2019 < 0.319 0.2
38 2019 < 0.319 0.2
39 2019 < 0.319 0.2
40 2019 < 0.319 0.2
41 2019 < 0.319 0.2
42 2019 < 0.319 0.2
43 2019 < 0.319 0.2
44 2019 < 0.319 0.2
45 2019 < 0.319 0.2
46 2019 < 0.319 0.2
47 2019 < 0.319 0.2
48 2020 < 0.319 0.2
49 2020 < 0.319 0.2
50 2020 < 0.319 0.2
51 2020 < 0.149 0.2
52 2020 < 0.149 0.2
53 2020 < 0.149 0.2
54 2020 < 0.149 0.2
55 2020 < 0.149 0.2
56 2020 < 0.149 0.2
57 2020 < 0.149 0.2
58
Values" then "COPY"
. Maximum data
points = 58
Tetrachloroethylene (PCE)
0.0000
0.2000
0.0000
57
Mult Factor = 1.0000
Max. Value 0.2 pg/L
Max. Pred Cw 0 DETECTS pg/L
Date Data BDL=1/2DL Results
1 2016 < 0.37 0.2 Std Dev. 0.6318
2 2016 < 0.37 0.2 Mean 0.2837
3 2016 < 0.372 0.2 C.V. 2.2271
4 2016 < 0.37 0.2 n 57
5 2016 < 0.37 0.2
6 2016 < 0.37 0.2 Mult Factor = 1.0200
7 2016 < 0.372 0.2 Max. Value 5.0 Ng/L
8 2016 < 0.372 0.2 Max. Pred Cw 5.1 Ng/L
9 2016 < 0.372 0.2
10 2016 < 0.372 0.2
11 2016 < 0.372 0.2
12 2016 < 0.372 0.2
13 2017 < 0.372 0.2
14 2017 < 0.372 0.2
15 2017 < 0.372 0.2
16 2017 < 0.372 0.2
17 2017 < 0.372 0.2
18 2017 < 0.372 0.2
19 2017 < 0.372 0.2
20 2017 < 0.372 0.2
21 2017 < 0.372 0.2
22 2017 < 0.372 0.2
23 2017 < 0.372 0.2
24 2018 < 0.372 0.2
25 2018 < 0.372 0.2
26 2018 < 0.372 0.2
27 2018 < 0.372 0.2
28 2018 < 0.372 0.2
29 2018 < 0.372 0.2
30 2018 < 0.372 0.2
31 2018 < 0.372 0.2
32 2018 < 0.372 0.2
33 2018 < 0.372 0.2
34 2018 < 0.372 0.2
35 2018 < 0.372 0.2
36 2019 < 0.372 0.2
37 2019 < 0.372 0.2
38 2019 < 0.372 0.2
39 2019 < 0.372 0.2
40 2019 < 0.372 0.2
41 2019 < 0.372 0.2
42 2019 < 0.372 0.2
43 2019 < 0.372 0.2
44 2019 < 0.372 0.2
45 2019 < 0.372 0.2
46 2019 4.97 4.97
47 2019 < 0.372 0.2
48 2020 < 0.372 0.2
49 2020 < 0.372 0.2
50 2020 < 0.372 0.2
51 2020 < 0.3 0.2
52 2020 < 0.3 0.2
53 2020 < 0.3 0.2
54 2020 < 0.3 0.2
55 2020 < 0.3 0.2
56 2020 < 0.3 0.2
57 2020 < 0.3 0.2
58
Values" then "COPY"
. Maximum data
points = 58
85928 RPA solvents 15Mar2021, data
- 3 - 3/15/2021

REASONABLE POTENTIAL ANALYSIS
Trichloroethylene (TCE)
Date Data BDL=1/2DL Results
1 2016 < 0.4 0.2 Std Dev. 0.0000
2 2016 < 0.4 0.2 Mean 0.2000
3 2016 < 0.398 0.2 C.V. 0.0000
4 2016 < 0.4 0.2 n 57
5 2016 < 0.4 0.2
6 2016 < 0.4 0.2 Mult Factor = 1.0000
7 2016 < 0.398 0.2 Max. Value 0.2 pg/L
8 2016 < 0.398 0.2 Max. Pred Cw 0.2 pg/L
9 2016 < 0.398 0.2
10 2016 < 0.398 0.2
11 2016 < 0.398 0.2
12 2016 < 0.398 0.2
13 2017 < 0.398 0.2
14 2017 < 0.398 0.2
15 2017 < 0.398 0.2
16 2017 < 0.398 0.2
17 2017 < 0.398 0.2
18 2017 < 0.398 0.2
19 2017 < 0.398 0.2
20 2017 < 0.398 0.2
21 2017 < 0.398 0.2
22 2017 < 0.398 0.2
23 2017 < 0.398 0.2
24 2018 < 0.398 0.2
25 2018 < 0.398 0.2
26 2018 < 0.398 0.2
27 2018 < 0.398 0.2
28 2018 < 0.398 0.2
29 2018 < 0.398 0.2
30 2018 < 0.398 0.2
31 2018 < 0.398 0.2
32 2018 < 0.398 0.2
33 2018 < 0.398 0.2
34 2018 < 0.398 0.2
35 2018 < 0.398 0.2
36 2019 < 0.398 0.2
37 2019 < 0.398 0.2
38 2019 < 0.398 0.2
39 2019 < 0.398 0.2
40 2019 < 0.398 0.2
41 2019 < 0.398 0.2
42 2019 < 0.398 0.2
43 2019 < 0.398 0.2
44 2019 < 0.398 0.2
45 2019 < 0.398 0.2
46 2019 < 0.398 0.2
47 2019 < 0.398 0.2
48 2020 < 0.398 0.2
49 2020 < 0.398 0.2
50 2020 < 0.398 0.2
51 2020 < 0.19 0.2
52 2020 < 0.19 0.2
53 2020 < 0.19 0.2
54 2020 < 0.19 0.2
55 2020 < 0.19 0.2
56 2020 < 0.19 0.2
57 2020 0.19 0.2
58
Values" then "COPY"
. Maximum data
points = 58
-4-
85928 RPA solvents 15Mar2021, data
3/15/2021

American Truetzschler
NC0085928
REASONABLE POTENTIAL ANALYSIS
2016 Generic RPA (non -hardness dependent) - 95% Probability/95% Confidence
Qw (MGD) = 0.02414
1Q10S (cfs) = 0.00
7Q1OS (cfs) = 0.00
7QIOW (cfs)= 0.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 0.00
Receiving Stream: UT to the Catawba River
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC-1
IWC @ 1QIOS = 100.0%
IWC @ 7Q1OS = 100.0%
IWC @ 7QIOW = 100.0%
IWC @ 30Q2 = 100.0%
IWC @ QA = 100.0%
Stream Class: WS-IV; CA
Outfall 001
Qw = 0.02414 MGD
Stream Class CA considered.
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS HQW OR ORW
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
_1
a
N
i_
n
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS /
Chronic
Applied
Standard
/z FAV /
Acute
n
# Det. Max Pred Cw Allowable Cw
1,1-Dichloroethane (1,1 DCA)
C
3
WS
3
0.4
µg/L
57
0
NO DETECTS
Acute: 3.00
Chronic: 3.00
Max MDL = 0.4
No RP; discontinue Monitoring
1,2-Dichloroethane (1,2 DCA)
C
4.95
WS
4.95
0.4
µg/L
57
0
NO DETECTS
Acute: 4.95
Chronic: 4.95
Max MDL =0.4
No RP; discontinue Monitoring
1,1-Dichloroethylene (1,1 DCE)
NC
150
WS
150
0.4
µg/L
57
2
4.0
Acute: 150
Chronic: 150
No value > Allowable Cw
No RP; discontinue Monitoring
1,1,1 Trichloroethane (TCA)
C
5000
WS
5000
0.4
µg/L
57
0
NO DETECTS
Acute: 5,000
_ _ _ _ _ _5,_ _ _
Chronic 000
Max MDL = 0.4
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP; discontinue Monitoring
Tetrachloroethylene (PCE)
C
0.35
WS
0.35
0.4
µg/L
57
1
5.1
Acute: 0.35
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 0.35
1 value(s) > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
RP= yes; add permit limit - Questionable RP. Max
Predicted based on one hit on 06Nov2019.
Trichloroethylene (TCE)
C
1.25
WS
1.25
0.4
µg/L
57
1
0.2
Acute: 1.25
_
Chronic 1.25
No value > Allowable Cw
No RP; discontinue Monitoring
Page 1 of 1
85928 RPA solvents 15Mar2021, rpa
3/15/2021

Permit NC0085928
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
American Truetzschler, Inc.
is hereby authorized to discharge wastewater from a facility located at
American Truetzschler GW-REM
12300 Moores Chapel Road, Charlotte
Mecklenburg County
to receiving waters designated as a unnamed tributary of the Catawba River, Catawba River Basin, in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III and IV hereof.
This permit shall become effective November 1, 2015.
This permit and authorization to discharge shall expire at midnight on June 30, 2020.
Signed this day October 2, 2015.
S. Jay Zimmerman, P.G., Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

Permit NC0085928
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises
under the permit conditions, requirements, terms, and provisions included herein.
American Truetzschler, Inc.
is hereby authorized to:
1. continue to operate an existing 0.050 MGD groundwater remediation system consisting of an
equalization tank, particulate filter, a sodium cation -exchange system, a crushed limestone
filtration unit and an air stripper, these facilities located at American Truetzschler, Inc., 12300
Moores Chapel Road, Charlotte, Mecklenburg County, North Carolina and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into an unnamed tributary (UT) to the Catawba River [stream segment 11-117] a waterbody
currently classified WS-IV; CA located within Subbasin 03-08-34 [HUC:03050103] of the
Catawba River Basin.
Page 2 of 6

Permit NC0085928
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited, monitored and reported' by the Permittee as specified below:
EFFLUENT
LIMITS
MONITORING
REQUIREMENTS
CHARACTERISTICS
[Parameter Codes]
Monthly
Average
Daily
Max
Measurement
Frequency
Sample
Type
Sample
Location
2
Flow [MGD]
50050
0.050
Weekly
Pump or
meter
E
1,2-Dichloroethane [1,2 DCE]
34531
0.38 µg/L
Monthly
Grab
E
Tetrachloroethylene [PCE]
34475
Monthly
Grab
E
1,1-Dichloroethane, µg/L [1,1
DCA]
34496
Monthly
Grab
E
1,1-Dichloroethene, µg/L [DCE]
34501
Monthly
Grab
E
1,1,1-Trichloroethane, µg/L [TCA]
34506
Monthly
Grab
E
Trichloroethylene, µg/L [TCE]
39180
Monthly
Grab
E
pH
00400
Not < 6.or > 9.0
standard Units
Monthly
Grab
E
Chronic Toxicity 3
TGP3B
Quarterly
Grab
E
Footnotes:
1. Beginning no later than 270 days from the permit effective date), the Permittee shall submit discharge
Monitoring Reports electronically using NCDWR's eDMR submittal system [See Section A. (3.)].
2. Sample Location: E = Effluent.
3. Chronic Toxicity (Ceriodaphnia P/F at 90%), monitor quarterly in February, May, August and November
[see Special Condition A. (2)]. All effluent characteristics must be monitored and reported to coincide with
toxicity sampling.
Condition: The Permittee shall discharge no floating solids or foam.
Page 3 of 6

Permit NC0085928
A. (2.) CHRONIC TOXICITY PERMIT LIMIT - QUARTERLY
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina
Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina
Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests
will be performed during the months of February, May, August and November. These months signify the first month
of each three-month toxicity -testing quarter assigned to the facility. Effluent sampling for this testing must be obtained
during representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all
treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit
limit, then multiple -concentration testing shall be performed at a minimum, in each of the two following months as
described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -December 2010)
or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring
Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and
THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the following address:
Attention:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, NC 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after the end
of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. Total
residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name,
permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area
of the form. The report shall be submitted to the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required
during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter, which is the three
month time interval that begins on the first day of the month in which toxicity testing is required by this permit and
continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include
alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival,
minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following the month of the
initial monitoring.
Page 4 of 6

Permit NC0085928
A. (3.) ELECTRONIC REPORTING - DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
specify that, if a state does not establish a system to receive such submittals, then Permittees must submit DMRs
electronically to the Environmental Protection Agency (EPA). The Division intends to adopted and implement
these regulations in 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting (Supersedes Part II, Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the Permittee shall report discharge
monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR)
internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring
data and submit DMRs electronically using the internet. Until such time that the state's eDMR application
is compliant with EPA's Cross -Media Electronic Reporting Regulation (CROMERR), Permittees will be
required to submit all discharge monitoring data to the state electronically using eDMR and will be required
to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the
computer printed eDMR to the following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a Permittee is unable to use the eDMR system due to a demonstrated hardship, or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted, and discharge
monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3), or alternative forms approved by
the Director. Duplicate signed copies shall be submitted to the mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in
writing to the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months
and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the
Permittee re -applies for and is granted a new temporary waiver by the Division.
Page 5 of 6

Permit NC0085928
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements (Supplements Part II, Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section B.
(11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account
and login credentials to access the eDMR system. For more information on North Carolina's eDMR
system, registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
"I certi, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
3. Records Retention [Supplements Part II, Section D. (6.)1
The Permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report. This
period may be extended by request of the Director at any time [40 CFR 122.41].
Page 6 of 6

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Mr. John Guglielmette
H.R. Manager
American Truetzschler, Inc.
P.O. Box. 669228
Charlotte, North Carolina 28266
Dear Mr. Guglielmette:
NORTH CAROLINA
Environmental Quality
June 28, 2019
Subject: Compliance Evaluation Inspection
American Truetzschler
NPDES Permit NC0058928
Groundwater Remediation
Charlotte, Mecklenburg County
On June 25, 2019, staff from the Mooresville Regional Office (MRO) performed a compliance inspection
of the Groundwater Remediation system at the subject site to determine compliance with the permit.
Enclosed is a copy of the inspection report. Please see the MRO suggestions for maintenance in the
inspection report.
The system is online and performing at levels consistent with the permit for this facility. This permit
requires a PC-1 operator classification. Please be sure that all ORC information for this permit is current.
Should you have any questions with the site inspection report or the findings list herein, I may be reached
by phone at [phone] or by email at edward.watsongncdenr.gov, should you have questions.
Sincerely,
DocuSigned by:
A H P,zy.i
F161FB69A2D84A3...
Andrew H. Pitner, P.G.
Assistant Regional Supervisor
Mooresville Regional Office
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Attachment: Compliance Inspection Report
CC: Mr. Mike Stanforth, Excel Civil & Environmental Associates (via email)
DWR Files (Laserfiche)
=D_E
NORTH CARIXINA
oem,um+am of Fmimnmen4l mwmr
North Carolina Department of Environmental Quality I Division of Water Resources
Mooresville Regional Office 1610 East Center Avenue, Suite 301 I Mooresville, North Carolina 28115
704.663.1699

United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection
1 IN I 2 IL I 'I NC0085928 111 12 I 19/06/25 117
Type
18 L c I
I I I I I
Inspector Fac Type
19 I S I 201
1l66
21I I I I I I I I I I I
I I I I I I I I I I I I I I I I I I
I I I
I I I I I
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved
6711.0 I 70 LJ Iz I 71 ID I 72 I N I 73 74 75I
1
I
I I I I I 1
180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Truetzschler remediation site
12300 Moores Chapel Rd
Charlotte NC 28266
Entry Time/Date
09:42AM 19/06/25
Permit Effective Date
15/11/01
Exit Time/Date
11:04AM 19/06/25
Permit Expiration Date
20/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
///
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Dirk Jaekel,PO Box 669228 Charlotte NC 28266//704-391-5340/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Edward Watson MRO GW///
Signature of Management Q A ReviewertDocusigned
by: Agency/Office/Phone and Fax Numbers Date
6.28.19
'-F161FB69A2D84A3...
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type
31
NC0085928 111 121 19/06/25
1
17 18 I"I
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Staff from the MRO performed a Compliance Inspection for the American Truetzschler facility under
permit NC0085928. During the site visit, a facility review was performed. It may have been previously
mentioned that the paperwork for the system needed to be kept at the treatment system. However, the
paperwork and permit have become damaged. Please keep the paperwork in an office area where it
can be protected.
Laboratory data were reviewed during the site visit. Three years of data were present for review. The
data appears to be in order an complete.
The permit indicates that flow is through a UT to the Catawba River. Flow is actually through an
engineered ditch. Discharge flow from the treatment system never reaches the Catawba River.
The subject of the installation of a ditch or pipe to the Catawba River has been discussed in the past
with regards to reducing the Bio-monitoring percent passing requirement for this permit. A file review
does not indicate a resolution to the issue of pipe/trench installation has been established. The
installation of trench/pipe should display the 7Q10 flow for this system is not enough to reach the river
and discharge flow will eventually percolate into the soils.
Currently, the system has been able to attain the 90% pass requirement, so the permittee may also
choose to submit the permit renewal with no change rather than incur the expense of pipe or trench
installation. If you chose to submit the permit renewal with no change, the MRO will accept this as the
resolution of this issue.
The current permit is scheduled to expire in a year. Please be sure to submit the renewal application
at least 180 days prior to permit expiration.
Page# 2

Permit: NC0085928
Inspection Date: 06/25/2019
Owner - Facility: Truetzschler remediation site
Inspection Type: Compliance Evaluation
Permit
(If the present permit expires in 6 months or less). Has the permittee submitted a new
application?
Is the facility as described in the permit?
# Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Yes No NA NE
❑ • ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
• ❑ ❑ ❑
Comment: During the inspection, the permit was reviewed with Mr. Gary Hames of American
Truetzschler. The various part of the permit were explained to Mr. Hames. MRO contact
information was also left with Mr. Hames in the event that he had any questions pertaining to
the permit.
I requested that the permit and supporting document be kept in Mr. Hames office for the
protection of the paperwork.
Operations & Maintenance
Is the plant generally clean with acceptable housekeeping?
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable
Solids, pH, DO, Sludge Judge, and other that are applicable?
Yes No NA NE
• ❑ ❑ ❑
❑ • ❑ ❑
Comment: O&M records were present. The records appeared to be current and complete for three
years.
The effluent meter appears to be relatively new. However, effluent flow meter calibration
records are not up-to-date.
Please perform an internal calibration of the meter and submit the calibration information by
email to the MRO.
The outfall displayed no foam, solids or odor being present. However, debris obstructing the
discharge flow -path prevented being able to follow the discharge channel. This area should
be kept assessible for purposes of being able to inspect flow.
Please submit a copy of the waste manifest for the spent Carbon. Samples for this system
are collected at the system outfall.
Page# 3

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
American Truetschler, Inc.
Attn: John Guglielmetti
PO Box 669228
Charlotte, NC 28266-9228
Subject: Permit Renewal
Application No. NC0085928
Truetzschler remediation site
Mecklenburg County
Dear Applicant:
NORTH CAROLINA
Environmental Quality
January 09, 2020
The Water Quality Permitting Section acknowledges the December 27, 2019 receipt of your permit renewal application
and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
cc: Central Files w/application
cc: Michael T. Stanforth, P.E.
GRE
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
North Caro,; na Department of Env ronmenta Qua!ty I D vson of Water Resouroes
Mooresv 'se Regona0ff,oe 1610 East Center Avenue, Su to 301 I Mooresv e. North Caro, na 28115
7 04-663-1699

December 23, 2019 Excel Environmental Associates, PLLC
Post Office Box 6172
Gastonia, NC 28056-6000
Telephone [phone]
Facsimile 704.853.3949
Cover Letter
To: Mr. Wren Thredford
NCDEQ/DWR NPDES Unit
Department Of Environmental Quality Division of
Water Resources
1617 Mail Service Center
Raleigh, North Carolina 27699
We are sending you: XX Attached
RE: American Truetzschler, Inc.
12300 Moores Chapel Rd
Charlotte, NC
Permit # NC0085928
EXCEL No. 201008
Under Separate Cover via
NO. COPIES
DESCRIPTION
1
NPDES Renewal Application
1
NPDES Permit Application
1
Effluent Analytical Report 12/17/19
1
Delegation of Signature Authority
Dated 2/27/17
RECEIVED
DEC 2 7 2019
NCDEQIDWRINPDES
THESE ARE TRANSMITTED:
For approval XX For your use
As requested For review
COMMENTS: Attached please find the above listed documents for the Groundwater
Remediation system NPDES Renewal permit for the above referenced project. Any
questions, please call.
Sincerely yours,
Michael T f s nforth, P.E.
Project Engineer

Permit NC0085928
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT QUALITY D
DIVISION OF WATER RESOURCES +r �+E `'�E,
PERMIT DEC 2 rt 1019
TO DISCHARGE WASTEWATER UNDER THE NCDEQIDWRINPDES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
American Truetzschler, Inc.
is hereby authorized to discharge wastewater from a facility located at the
American Truetzschler GW-REM
12300 Moores Chapel Road Charlotte,
Mecklenburg County
to receiving waters designated as Unnamed Tributary to the Catawba River in the Catawba River
Basin in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III and IV hereof.
This permit shall become effective , 2020.
This permit and authorization to discharge shall expire at midnight on June 30, 2025.
Signed this day . 2020.
Linda Culpepper
Interim Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NC0085928
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. and as of this issuance. any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises
under the permit conditions. requirements, terms, and provisions included herein.
American Truetzschler, Inc.
is hereby authorized to:
1. Continue to operate an existing 0.050 MGD groundwater remediation system consisting of an
equalization tank, particulate filter, a sodium cation -exchange system, a crushed limestone
filtration unit and an air stripper, these facilities located at American Truetzschler, Inc., 12300
Moores Chapel Road, Charlotte, Mecklenburg County, North Carolina and
2. discharge from said treatment works via Outfall 001, at the location specified on the attached map,
into an unnamed tributary (UT) to the Catawba River [stream segment 11-117] a waterbody
currently classified WS-IV; CA located within Subbasin 03-08-34 [HUC:03050103] of the
Catawba River Basin.
Page 2 of 7

Permit NC0085928
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORINGREQUIREMENTS
[NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge treated wastewater from Outfall 001. Such discharges shall be
limited, monitored and reported' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
(Parameter Codes)
LIMITS
MONITORING
REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location (2)
Flow (MGD)
50050
0.050
Weekly
Pump or
Meter
Effluent
1,2-Dichloroethane [1,2 DCE]
34531
0.38 µg/L
Monthly
Grab
Effluent
Tetrachloroethylene (PCE)
34475
Monthly
Grab
Effluent
1,1-Dichloroethane, µg/L [1,1
DCA]
34496
Monthly
Grab
Effluent
1,1-Dichloroethane, µg/L [DCE]
34501
Monthly
Grab
Effluent
1,1,1-Trichloroethane µg/L
[TCA]
34506
Monthly
Grab
Effluent
Trichloroethylene, µg/L [TCE]
39180
Monthly
Grab
Effluent
pH
00400
Not < 6.0 or > 9.0
standard Units
Monthly
Grab
Effluent
Chronic Toxicity3
TGP3B
Quarterly
Grab
Effluent
Footnotes:
1. Beginning no later than 270 days from the permit effective date, the Permittee shall submit discharge
Monitoring Reports electronically using NCDWR's eDMR submittal system [See Section A. (3.)).
2. Sample Location: E = Effluent.
3. Chronic Toxicity (Ceriodaphnia P/Fat 90%), monitor quarterly in February, May, August and November [see
Special Condition A. (2)]. All effluent characteristics must be monitored and reported to coincide with toxicity
sampling.
Condition: The Permittee shall discharge no floating solids or foam.
Page 3 of 7

Permit NC0085928
A. (2.) CHRONIC TOXICITY PERMIT LIMIT - QUARTERLY
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at
an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina
Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina Phase H
Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be performed
during the months of February, May, August, and November. These months signify the first month of each three-month toxicity testing
quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then
multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1)
for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic
Value. Additionally, DWR Form AT-3 (original) is to be sent to the following address:
Attention:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after the end of the
reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and
be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample
must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will
complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe
number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the
following month. Assessment of toxicity compliance is based on the toxicity testing quarter, which is the three month time interval that
begins on the first day of the month in which toxicity testing is required by this permit and continues until the final day of the third
month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate
potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or
limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum
control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate
follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring.
Page 4 of 7

Permit NC0085928
A. (3.) ELECTRONIC REPORTING — DISCHARGE MONITORING REPORTS
[NCGS 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports. The
final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard
Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting Records
Retention
Monitoring Reports
1. Reporting Requirements !Supersedes Section D. (2.) and Section E. (5.) (a))
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report ( eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs
electronically using the internet. Until such time that the state's eDMR application is compliant with EPA's Cross -
Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring
data to the state electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the following address:
NCDEQ Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically
located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from
the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on
paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be
submitted to the mailing address above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the
permit or in the case of a new facility, on the last day of the month following the commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data
and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CW A) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a Waiver from
Electronic Reporting" section below).
Page 5 of 7

Permit NC0085928
2. Electronic Submissions
In accordance with 40 CFR 122.41 (1)(9), the permittee must identify the initial recipient at the time of each
electronic submission. The permittee should use the EPA's website resources to identify the initial recipient for the
electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity (EPA or the state
authorized by EPA .to implement the NPDES program) that is the designated entity for receiving electronic NPDES
data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of
electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting
tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at:
https://www.federalregister.gov/documents/2015/ 10/22/2015-24954/national-pollutant-discharge-elimination-system-
npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic reporting
waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests for temporary
electronic reporting waivers must be submitted in writing to the Division for written approval at least sixty (60) days
prior to the date the facility would be required under this permit to begin submitting monitoring data and reports. The
duration of a temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and
reports shall be submitted electronically to the Division unless the permittee re -applies for and is granted a new
temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not transferrable.
Only permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the
Division for the period that the approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web
page:
http://deq.nc. gov/ about/ di visions/water-resources/ edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)I
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B.
(11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11. )(b ). A person, and
not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login
credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for
eDMR and obtaining an eDMR user account, please visit the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following
certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"1 certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted Based on my inquiry of the person or persons who manage the system, or those persons
Page 6 of 7

Permit NC0085928
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations. "
5. Records Retention [Supplements Section D. (6.)j
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records
or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended
by request of the Director at any time [ 40 CFR 122.41].
Page 7 of 7

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American
Groundwater
Latitude: 35° 15' 32" N
Truetzschler,
Remediation
State
Grid:
WWTP
Mount Holly
Inc.
Facility
Location
not to scale
Longitude: 81° 00' 19" W Permitted Flow: 0.05 MGD
Receiving Stream: UT to Catawba River Drainage Basin: Catawba River Basin
NPDES Permit No. NC0085928
Stream Class: WS-1V CA Sub -Basin: 03-08-34
�� G
N*�
Mecklenburg County

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
Mail the complete application to:
NC DEQ / DWR / NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
NPDES Permit Number
NC0085928
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
American Truetzschler Inc.
American Truetzschler
12300 Moores Chapel Road
Charlotte
NC, 28214
[phone]
[phone]
[e-mail]
2. Location of facility producing discharge:
Check here if same as above
Street Address or State Road
City
State / Zip Code
County
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
American Truetzschler Inc.
12300 Moores Chapel Road
Charlotte
NC, 28214
[phone]
[phone]
4. Ownership Status:
Federal ❑ State ❑
Private ® Public ❑
Page 1 of 1 C-GW 6/17

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
5. Products recovered:
Gasoline ❑ Diesel fuel ❑ Solvents ® Other
6. Number of separate discharge points: 1
Outfall Identification number(s) 001
7. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
8. Treatment System Design flow 0.050 MGD
9. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Catawba River Stream Segment 11-117
10. Please list all additives to the treatment system, including chemicals or nutrients, that have
the potential to be discharged.
11. Is this facility located on Indian country? (check one)
Yes ❑ No
12. Additional Information
All applicants (including renewals):
A USGS topographical map (or copy of the relevant portion) which shows all outfalls
• A summary of the most recent analytical results (effluent data, if available) containing the
maximum values for each chemical detected
NEW Applicants only:
• Engineering Alternative Analysis
• Description of remediation treatment system components, capacities, and removal efficiency
for detected compounds.
• If the treatment system will discharge to a storm sewer, written approval from the
municipality responsible for the sewer.
• A list of any chemicals found in detectable amounts at the site, with the maximum observed
concentration reported for each chemical (the most recent sample must be collected less
than one year prior to the date of this application)
• For petroleum -contaminated sites - Analyses for Volatile Organic Compounds (VOC) should
be performed. Analyses for any fuel additives likely to be present at the site and for phenol
and lead should also be performed.
• For sites contaminated with solvents or other contaminants - EPA Method 624/625
analysis should be performed.
Page 2 of 2
C-GW 6/17

NPDES PERMIT APPLICATION - SHORT FORM C - GW
For discharges associated with groundwater treatment facilities.
13. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Printed name of Person Signing
/ f,e,, . 46"/Alef..e._
Title
72/27//q
Signature oplicant Date
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 3 of 3
C-GW 6/17

February 27, 2017
Wastewater Branch
Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject:
Delegation of Signature Authority
American Truetzschler
NPDES Number NC0085928
To Whom It May Concern:
By notice of this letter, I hereby delegate signatory authority to each of the following
individuals for all permit applications, discharge monitoring reports, and other
information relating to the operations at the subject facility as required by all applicable
federal, state, and local environmental agencies specifically with the requirements for
signatory authority as specified in 15A NCAC 2B.0506.
Donna Farris
Office Manager
625 Huntsman Court
Gastonia NC 28054
[e-mail]
704-853-0800
Mike Stanforth
Principal Engineer
625 Huntsman Court
Gastonia NC 28054
[e-mail]
704-853-0800
If you have any questions regarding this letter, please feel free to contact me at 704-391-
5308.
Sincerely,
John Guglielmetti
Controller
American Truetzschler
12300 Moores Chapel Road, Charlotte NC 28214
JGu,Elielntetti(a,,am-truetzschler. con
cc: Mooresville Regional Office, Water Quality Permitting Section

aceAnalytical
National Center for Testing & Innovation
A\ALYTICAL
REPORT
December 17, 2019
Excel Civil & Environmental Associates
Sample Delivery Group: L1170688
Samples Received: 12/13/2019
Project Number: 201008
Description: American Trutzschler
Site: CHARLOTTE, NC
Report To: Mr. Mike Stanforth
625 Huntsman Court
Gastonia, NC 28054
Entire Report Reviewed By:
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/19 13:45 1 of 10
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TABLE OF CONTENTS
ONE LAB. NATIONWIDE. ak
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
GWTS EFFLUENT L1170688-01 5
Qc: Quality Control Summary 6
Volatile Organic Compounds (GC/MS) by Method 8260D 6
GI: Glossary of Terms 7
Al: Accreditations & Locations 8
Sc: Sample Chain of Custody 9
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ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/1913:45 2 of 10

SAMPLE SUMMARY
ONE LAB. NATIONWIDE. lit
GWTS EFFLUENT L1170688-01 GW
Collected by
C DeVane
Collected date/time Received date/time
12/11/19 09:20 12/13/19 08:45
Method
Volatile Organic Compounds (GC/MS) by Method 8260D
Batch Dilution Preparation Analysis Analyst Location
date/time date/time
WG1397035 1 12/16/19 02:47 12/16/19 02:47 GLN Mt. Juliet, TN
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ACCOUNT: PROJECT:
Excel Civil & Environmental Associates 201008
SDG:
L1170688
DATE/TIME:
12/17/19 13:45
PAGE:
3 of 10

CASE NARRATIVE
ONE LAB. NATIONWIDE.
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
Heather J Wagner
Project Manager
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ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/1913:45 4 of 10

GWTS EFFLUENT SAMPLE RESULTS - 01
Collected date/time: 12/11/19 09:20 L1170688
ONE LAB. NATIONWIDE. AO
Volatile Organic Compounds (GC/MS) by Method 8260D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/I ug/I ug/I date / time
1,1-Dichloroethane U 0.259 1.00 1 12/16/2019 02:47 WG1397035
1,2-Dichloroethane U 0.361 1.00 1 12/16/2019 02:47 WG1397035
1,1-Dichloroethene U 0.398 1.00 1 12/16/2019 02:47 WG1397035
Tetrachloroethene U 0.372 1.00 1 12/16/2019 02:47 WG1397035
1,1,1-Trichloroethane U 0.319 1.00 1 12/16/2019 02:47 WG1397035
Trichloroethene U 0.398 1.00 1 12/16/2019 02:47 WG1397035
(S) Toluene-d8 115 80.0-120 12/16/2019 02.47 WG1397035
(S) 4-Bromofluorobenzene 95.9 77.0-126 12/16/2019 02:47 WG1397035
(S 1,2-Dichloroethane-d4 103 70.0-130 12/16/2019 02:47 WG1397035
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ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/19 13:45 5 of 10

WG1397035 QUALITY CONTROL SUMMARY
Volatile Organic Compounds (GC/MS) by Method 8260D L1170688-01
ONE LAB. NATIONWIDE. .41.
Method Blank (MB)
(MB) R3482651-2 12/15/1918:42
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/I ug/I ug/I
1,1-Dichloroethane U 0.259 1.00
1,2-Dichloroethane U 0.361 1.00
1,1-Dichloroethene U 0.398 1.00
Tetrachloroethene U 0.372 1.00
1,1,1-Trichloroethane U 0.319 1.00
Trichloroethene U 0.398 1.00
(S) Toluene-d8 114 80.0-120
(S) 4-Bromofluorobenzene 102 77.0-126
(S)1,2-Dichloroethane-d4 99.1 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3482651-1 12/15/1918:23
Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier
Analyte ug/I ug/I % %
1,1-Dichloroethane 5.00 4.58 91.6 70.0-126
1,2-Dichloroethane 5.00 4.56 91.2 70.0-128
1,1-Dichloroethene 5.00 4.70 94.0 71.0-124
Tetrachloroethene 5.00 4.97 99.4 72.0-132
1,1,1-Trichloroethane 5.00 4.88 97.6 73.0-124
Trichloroethene 5.00 4.34 86.8 78.0-124
(S) Toluene-d8 105 80.0-120
(S) 4-Bromofluorobenzene 89.6 7Z0-126
(S)1,2-Dichloroethane-d4 106 70.0-130
ACCOUNT:
Excel Civil & Environmental Associates
PROJECT:
201008
SDG: DATE/TIME: PAGE:
L1170688 12/17/1913:45 6 of 10
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GLOSSARY OF TERMS
ONE LAB. NATIONWIDE. ill
Analyte
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On -Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec. Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
Dilution standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state "ND" (Not Detected) or "BDL"
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)
Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non -conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
Sample Chain of
Custody (Sc)
Sample Results (Sr)
Sample Summary (Ss)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
The remainder of this page intentionally left blank, there are no qualifiers applied to this SDG.
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ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/1913:45 7 of 10

ACCREDITATIONS & LOCATIONS
ONE LAB. NATIONWIDE.
Pace National is the only environmental laboratory accredited/certified to support your work nationwide from one location. One phone call, one point of contact, one laboratory. No other lab is as
accessible or prepared to handle your needs throughout the country. Our capacity and capability from our single location laboratory is comparable to the collective totals of the network
laboratories in our industry. The most significant benefit to our one location design is the design of our laboratory campus. The model is conducive to accelerated productivity, decreasing
turn -around time, and preventing cross contamination, thus protecting sample integrity. our focus on premium quality and prompt service allows us to be YOUR LAB OF CHOICE.
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
*Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace National.
State Accreditations
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN-03-2002-34
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey—NELAP TN002
California 2932 New Mexico' n/a
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina' DW21704
Georgia NELAP North Carolina 5 41
Georgia' 923 North Dakota R-140
Idaho TN00003 Ohio—VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LA000356
Kentucky 15 90010 South Carolina 84004
Kentucky 2 16 South Dakota n/a
Louisiana A130792 Tennessee 2006
Louisiana' LA180010 Texas T104704245-18-15
Maine TN0002 Texas 5 LAB0152
Maryland 324 Utah TN00003
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 460132
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 9980939910
Montana CERT0086 Wyoming A2LA
Third Party Federal Accreditations
A2LA — ISO 17025 1461.01
A2LA ISO 17025 1461.02
Canada 1461.01
EPA—Crypto TN00003
AIHA-LAP,LLC EMLAP 100789
DOD 1461.01
USDA P330-15-00234
Drinking Water 2 Underground Storage Tanks 5 Aquatic Toxicity ° Chemical/Microbiological 5 Mold 6 Wastewater n/a Accreditation not applicable
Our Locations
Pace National has sixty-four client support centers that provide sample pickup and/or the delivery of sampling supplies. If you would like assistance from one of our support offices, please contact
our main office. Pace National performs all testing at our central laboratory.
WA
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ACCOUNT:
Excel Civil & Environmental Associates
PROJECT: SDG: DATE/TIME: PAGE:
201008 L1170688 12/17/19 13:45 8 of 10

ECEABilling
PO Box 6172
Gastonia, NC 28056
Information:
Mike Stanforth
ECEA
PO Box 6172
Gastonia, NC 28056-6000
Report to:
Mike Stanforth
Email to:
mstanforth©exceleng r. corn
Project American Trutzschler
Description:
c"y'/sate
Collected Charlotte NC
Phone: [phone]
FAX: [phone]
Client Project #:
201008
ESC Key:
Collected by C DeVane
Site/Facility ID#:
P.O.*: 201008
Collected by (signature):
Rush? (Lab MUST Be Notified
Date
Same Day 200%
Results Needed;
VIP' w /
P1 V
o.
Next Day100% Email?
_No/Yes
Two Da °
Immediately Packed on lee N '
of
Three Qay ... _ . 25°0° FAX? �NoYes
Sample ID
Comp/Grab
Matrix`
Cntrs
Depth Date Time
GWTS EFFLUENT
Grab
GW
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1 111111
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111111111111111111
*Matrix: SS- SoiVSolid
Remarks:
Relinquished by: (Signa
Relinquished by:
Relinquished by:
GW- Groundwater
WW- WasteWater DW - Drinking Water OT- Other
..n
Received by: (Signature
Received by: (Signatu
d for lab by: (Signature)
Analysis/Container/Preservative
Phone- C ) 767.3859
Phone Cf175ft-5B58
Far ( 5) 758-5E159
GoCode
Shipped Via,_
Remarks/Contaminant
moles returned via: UPS
C# FedEx ❑ Courier 0 ondition: (lab use only',
t t
Temp:` Bottles .ceiveo RAD SCREENV4.5 mR/f;
Sample # (lab only)
pH Temp
Flow Other

Pace Analytical National Center for Testing & Innovation
Cooler Receipt Form
Client:
Cooler Received/Opened On:
Received By: Michael Pa
Si nature:
Receipt Check Lis
COC Seal Present / Intact?
COC Sgned:J;Accurate?
Bottles arrive intact?
Cotrbttle use
Sufficient volume sent?
Applicabis
VOA Zero headspace?
Preservation Correct,/ Checked?r
2 / 1 /19 Temperature:
as