NC0026689_Fact Sheet_20210903

Fact Sheet
NPDES Permit No. NC0026689
Permit Writer / Email Contact: Diana Yitbarek / [e-mail]
Date:9/3/2021
Division/Unit: NC DEQ Division of Water Resources / NPDES Municipal Permitting Unit
Fact Sheet Template: Version 1/9/2017
Permitting Action:
❑X 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, three effluent pollutant scans, four 2nd 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
Table 1. Facility Information
Facility Information
Applicant/Facility Name:
Town of Denton Wastewater Treatment Plant (WWTP)
Applicant Address:
PO Box 306, Denton, NC 27239
Facility Address:
300 Council Access Road, Denton, NC 27239
Permitted Discharge Flow:
0 8 million gallons per day (MGD)
Facility Type/Waste:
Minor Municipal/ 90% Domestic and 10% Industrial'
Facility Class:
Class III Biological - 15A NCAC 08G .0302
Treatment Units:
Bar screening and grit removal structures, lift station, dual oxidation ditches
with two mechanical rotors, four secondary clarifiers with sludge return, dual
tertiary filters, chlorine and dechlorination system, cascade aerator, two sludge
digesters, sludge holding tanks, sludge drying beds, and standby generator
Pretreatment Program
(Y/N/Inactive)
Y
County:
Davidson
Region:
Winston-Salem Regional Office (WSRO)
1 Percentage based on the current permitted industrial flow.
Page 1 of 15

Permitting Action: The Town of Denton (Town) applied for NPDES permit renewal for Denton WWTP in May
2020. The WWTP has a design capacity of 0.8 MGD and is currently authorized to discharge 0.8 MGD into Lick
Creek, a class WS-IV and zero 7Q10 flow stream. The class WS-IV denotes use as a source of water supply for
drinking, culinary, or food processing purposes. The zero 7Q10 denotes the low flow in the stream and, therefore,
the need to apply Zero Flow Policies to the permit to protect the stream.
The Denton WWTP (Facility) serves about 1800 customers within the Town. The Facility has a modified
pretreatment program with a Short -Term Monitoring Plan (STMP). It has one non -categorical SIU, Century
Hosiery, authorized to discharge 0.08 MGD.
May 15, 2020, Town's cover letter for renewal application requests monitoring reduction for BOD5, ammonia
nitrogen, fecal coliform, and total suspended solids (TSS). It also requests the removal or reduction of daily
effluent monitoring for temperature; and removal of monitoring for dichlorobromomethane and bis(2-ethylhexyl)
phthalate. These requests are addressed below in this fact sheet.
Facility Background: The Facility was under a Special Order by Consent (SOC) for flow and toxicity that expired
in 2000. The SOC included a schedule for upgrade and relocation of the discharge. In the early 2000's, the Facility
expanded the plant to 0.8 MGD and relocated the outfall to Lick Creek; per the 1996 WET policy, the IWC
concentration will remain 90%. Denton is rated as a Class III Facility at 0.8 MGD — monitoring frequencies given
reflect this classification.
2. Receiving Waterbody Information:
Table 2. Receivina Waterbodv Information
Outfalls/Receiving Strearn(s):
Outfall 001 [35°37'27.0" N 80°09' 17.0" W]/Lick Creek
Stream Segment/Assessment
Unit (AU):
12-126-(3)
Stream Classification:
WS-IV
Drainage Area (mi2):
0.57
Summer 7Q10 (cfs)
0*
Winter 7Q10 (cfs):
0*
30Q2 (cfs):
0.09*
Average Flow (cfs):
0.5*
Instream Waste Concentration
(IWC) (% effluent):
90 % at 0.8 MGD [1996 WET Policy]
2018 303(d) listed/parameter:
Yes/ Benthos and Fish Community
Subject to TMDL/parameter:
Yes/ Mercury Statewide TMDL implemented in 2012
Basin/Sub-basin/ Hydrologic unit
code (HUC):
Yadkin Pee Dee River Basin/03-07-08/0304010306
USGS Topo Quad/State Grid:
High Rock/E18SW
*Statistical data taken from the previous fact sheet per Division's guideline.
The Facility discharges to Lick Creek, which is zero flow 7Q10, and is listed in the 2018 and 2020 draft 303 (d)
list for benthos and fish community. This Creek is located near High Rock Lake. Also, Badin Dam is located in
Page 2 of 15

this watershed. This watershed has approximately 13% of its steam length identified as impaired for Aquatic Life.
For more information, see the 2009 Lower Yadkin Pee Dee River Basin Restoration Priorities. The outfall is
located about 1.5 miles from the WWTP's effluent discharge location.
Denton is a member of the Yadkin Basin Coalition, and instream monitoring via the permit is waived.
3. Effluent Data Summary
Effluent data for Outfall 001 is summarized below from August 2016 through March 2021.
Table 3. Effluent Data Summary with permit limits Outfall 001. Parameters listed as in the last permit.
Parameter
Units
Average
Max.
Min.
Permit Limit
Flow
MGD
0.50
1.63
0.11
MA 0.8 MGD
BOD5
(April 1- October 31)
m 1
3.6
16.6
2.0
MA 5.0 mg/I
WA 7.5 mg/I
BOD5
(November 1-March 31)
m /1
g
3.2
19.5
2.0
MA 10.0 mg/I
WA 15.0 mg/I
Total Suspended Solids
(TSS)
mg/1
6.1
43
1.0
MA 30.0 mg/I
WA 45.0 mg/I
Dissolved Oxygen (DO)
mg/1
8.6
12.3
6.0
DA >_ 6.0 mg/I
pH
SU
6.6
7.6
6.0
6.0<pH<9.0
NH3N
(April 1- October 31)
m 1
0.14
1.7
0.1
MA 2.0 mg/I
WA 6.0 mg/I
NH3N
(November 1-March 31)
m 1
0.2
2.3
0.1
MA 4.0 mg/I
WA 12.0 mg/I
Total Residual Chlorine
(TRC)
µgn
20.4
49.0
9.0
DM 17.00 Ng/I
Temperature
°C
20
30
9
Conductivity
µmho/cm
860
2623
164
Fecal Coliform
#/100 ml
15.3
(Geomean)
600.0
1.0
MA 200/100m1
WA 400/100m1
Total Nitrogen (TN)
mg/1
11.2
21.0
0.1
Total Phosphorus (TP)
mg/1
1.5
4.8
0.2
Total Copper
µg/1
9.9
16.0
5.0
Total Nickel
µg/1
9.3
11.0
1.0
Total Cadmium
µg/1
2.0
2.0
2.0
Total Silver
µg/1
4.9
5.0
2.0
Total Hardness [as
CaCO31
mg/1
55.7
116.0
20.0
Dichlorobromomethane
µg/1
2.1
7.2
1.0
MA 1.3 pg/I
Bis (2-Ethylhexyl)
Phthalate
µgn
10.3
16.1
10.0
*MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum, DA=Daily Average.
Table 4. Effluent Data Summary from expanded effluent pollutant scan at Outfall 001
Parameter
Units
Average
Max.
Chloroform
µg/1
14.1
17.8
Zinc
µg/1
26.5
36.0
Mercury*
ng/1
5.5
15.6
*See section 6.6 Mercury Statewide Total Maximum Daily Load (TMDL) Evaluation
Page 3 of 15

Sample results for the sampled metals not included above such as arsenic, beryllium, chromium, cyanide, lead,
molybdenum, selenium, and thallium, were less than the method detection limit'.
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/1 of instream standard at full permitted flow; 2) to verify model predictions
for outfall diffuser; 3) to provide data for future total maximum daily load (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).
Instream data summary and instream monitoring proposed for this permit action:
The current permit requires instream [upstream (U) and downstream (D)] monitoring for dissolved oxygen (DO),
temperature, and conductivity. However, the Town of Denton is a member of the Yadkin Basin Coalition;
therefore, instream monitoring for DO, temperature, conductivity via the permit is waived in light of the
Permittee's participation in the Yadkin Pee Dee River Basin Association (YPDRBA). Instream monitoring will
be immediately reinstated, and the Division shall be notified immediately should the Permittee end its
participation in the Association.
Monitoring of upstream hardness will be required in this permit cycle. The Upstream sampling location is at Flat
Swamp Road, about 5000 feet from the outfall. Via the YPDRBA, there is a Downstream monitoring station,
Q6140000, at Denton Road/ SR 1002, about 1.3 miles from the outfall. The figures below summarize
downstream and effluent (Eff) data from the analyzed period, August 2016 - December 2020. Currently, there is
no upstream monitoring station neither from the Coalition Monitoring Program nor the Ambient Monitoring
System (AMS).
Figure 1. Average, maximum, and minimum instream and effluent data summary for DO, T, pH, and Fecal
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
• Effluent
• Downstream
DO, mg/L
Average
8.6
7.2
1
Max
12.3
13.7 2.3 6.0
Min
L
35
30
25
20
15
10
5
0
• Effluent
• Downstream
Temperature, °C
Average
20
18
1
Max
30
Min
9
27 4
2 The Facility missed testing cadmium and silver at its lowest reporting levels, 0.5 pg/I, and 1.0 pg/I, respectively, as required by the permit. This permit
violation was referred to the Region for review and NOV issuance assessment.
Page 4 of 15

10.0
8.0
6.0
4.0
2.0
0.0
• Effluent
• Downstream
pH, Standard Units
Average
6.6
ii
Max
Min
7.6 6.0
6.8 8.3
Fecal Coliform, #/100 ml
8000.0
7000.0
6000.0
5000.0
4000.0
3000.0
2000.0
1000.0
0.0 r-
GeoMean Max Min
• Effluent 15.3 600.0 1.0
5.9 • Downstream 221.0 6800.0 18.0
As for highlights from the above figures:
• The minimum downstream DO detected was 2.3 mg/1 on 9/23/2019.
• The maximum downstream and effluent temperature was 27 and 30 degrees Celsius.
• Effluent and downstream pH mostly remained between 6 and 9 SU.
• The maximum downstream fecal coliform detected was 6800/100 ml. The maximum effluent fecal
coliform detected was 600/100 ml.
Hardness: Instream hardness sampling upstream of the discharge will be added to the permit at a monitoring
frequency of quarterly. The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by
the NC Environmental Management Committee (EMC) on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. The NC Division of Water Resources
NPDES Permitting Unit is required to implement the new dissolved metal standards in all permits public noticed
after April 6, 2016. The new standards for most metals include acute standards. Further, the freshwater standards
for several metals are expressed as the dissolved form of the metals, and seven metals have hardness -dependent
equations. As a result, the NPDES Permitting Unit will need site -specific effluent hardness data and instream
hardness data, upstream of the discharge for each facility monitoring these metals in order to calculate permit
limitations.
Is this facility a member of a Monitoring Coalition with waived instream monitoring (Y/N): Y
Name of Monitoring Coalition: Yadkin Pee Dee River Basin Association (YPDRBA)
5. Compliance Summary
From August 2016 to March 2021, the Facility received a total of eight notices of violation (NOVs) for exceeding
the monthly average (MA) for dichlorobromomethane (DCBM) and exceeding weekly average (WA) limits for
fecal coliform. The Facility also received thirteen Enforcement Cases for exceeding MA limits for DCBM and
violating the monitoring frequency for fecal coliform. The WSRO representative is working with the Facility to
monitor the Facility's compliance performance. The report on limit violations that proceeded to NOV or
Enforcement Case were as follows:
• DCBM - 17 MA limit exceedances. The maximum MA limit exceedance was 6.9 mg/1 (MA limit 1.3
mg/1)
• Fecal coliform - 1 WA exceedance and 3 frequency violations.
Page 5 of 15

Figure 2. Dichlorobromomethane Effluent Data Summary
8
7
6
5
4
3
2
1
0
5/10/2016
Dichlorobromomethane, ug/I
s
•
•
• h•
•
"":"le "- 2":".1.- 1"1":141/411/ ri It
•
•
•
9/22/2017 2/4/2019 6/18/2020 10/31/2021
• Value Limit
Summary of the compliance record with aquatic toxicity test limits and any second species test results (past 5
years): The Facility passed eighteen of eighteen quarterly chronic toxicity tests from February 2016 to May 2020.
The Facility complied with all 2nd species WET tests. The four 2nd species tests were performed in April 2016,
February 2017, May 2018, and August 2019.
Summary of the results from the most recent compliance inspection:
The last facility inspection conducted in February 2020 by Paul DiMatteo and Jenny Graznak, reported that the
drying beds were not in use. Only one of the two oxidation ditches was used due to height differences when built.
The other oxidation ditch structure was used as an equalization basin and was covered with duckweed. DO levels
in the oxidation ditch are kept between 6 to 8 mg/L.
The Regional inspectors also reported issues with dichlorobromomethane (DCBM), a disinfection byproduct.
The Facility is planning to coat the chlorine contact chamber. Based on the reasonable potential analysis (RPA)
showing reasonable potential to violate state water quality standards, dichlorobromomethane limits continue to
be added to the permit for the 0.8 MGD flow tier with a monthly monitoring requirement [See Permit Section A.
(1.)].
6. Water Quality -Based Effluent Limitations (WQBELs)
6.1 Dilution and Mixing Zones
In accordance with 15A NCAC 2B.0206, the following stream flows are used for dilution considerations for
development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic Life;
non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
Streamflow statistical values were extracted from the previous fact sheets (2000-2016) per Division's guideline.
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 15A NCAC 2B. 0204(b): NA
Page 6 of 15

6.2 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.
If permit limits are more stringent than TBELs, describe how limits were developed:
The current permit limits for BOD are based on 1995 speculative limits and 15A NCAC 2B.0206(d)(1) — Zero
Flow Policy regulations for zero 7Q10 and 30Q2 > 0. The limits were reviewed by the technical support branch.
It was determined that relocation and expansion were allowed at Lick Creek. No changes for DO or BOD are
proposed for this permit cycle.
6.3 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/1 (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/1 (acute impacts). Due to analytical issues, all TRC values reported
below 50 ug/1 are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal:
Ammonia: The current permit sets summer and winter MA and WA limits for ammonia [summer, MA (2.0 mg/1)
and WA (6.0 mg/1) and winter MA (4.0 mg/1) and WA (12.0 mg/1)]. These limits were based on a WLA for plant
expansion based on WASP Model. The ammonia limits will be the same as the previous permit cycle.
With this permit renewal, the effluent monitoring frequency for ammonia was changed from 3/Week to 2/Week.
[See additional information in Section 7. Monitoring Frequency Requirements]
TRC: The facility uses chlorination as its primary disinfection. The current permit limits TRC at 17 ug/L as a
daily maximum. The facility is considered compliant with its permit since all reported values were < 50 ug/L. It
is recommended to assess potential dichlorobromomethane issues. No changes are proposed for TRC in this
permit cycle.
Figure 3. TRC Effluent data summary from August 2016 to March 2021.
TRC, ug/I
60
50
40
30
20
10
0
5/10/2016 11/26/2016 6/14/2017 12/31/2017 7/19/2018 2/4/2019 8/23/2019 3/10/2020
• Value —0— limit
Page 7 of 15

6.4 Reasonable Potential Analysis (RPA) for Toxicants
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 Y2 detection limit for "less than" values; and 4) stream flows used for dilution consideration based on
15A NCAC 2B.0206. Effective April 6, 2016, NC began implementation of dissolved metals criteria in the RPA
process in accordance with guidance titled NPDES Implementation oflnstream Dissolved Metals Standards,
dated June 10, 2016.
The RPAs were conducted for the permitted flow of 0.8 MGD with a 7Q10S of zero cubic feet per second (cfs)
and site -specific hardness values on the effluent toxicant data collected in the Permittee's 2017 to 2019 effluent
pollutant scans and 2016 to 2020 DMRs. Pollutants of concern included toxicants with positive detections and
associated water quality standards/criteria. The data set was limited for arsenic, beryllium, chromium, cyanide,
lead, selenium, zinc, chloroform, and total phenolic compounds. 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:
Copper, dichlorobromomethane, and bis(2-ethylhexyl) phthalate
o Copper's effluent limit, 15.63 µg/L is calculated with the dissolved to total metal calculator
applying the hardness equation. Based on the RPA, the Town's collected copper data shows a
reasonable potential to exceed the criteria for aquatic life.
■ To provide an opportunity for the Town to develop a plan to assess sources of copper in
order to come in compliance with the limit in Section A. (1.), a 3-year schedule of
compliance has been added to the permit.
o Dichlorobromomethane's effluent limit is calculated with its EPA criteria for water supply
(WS) streams, 0.95 µg/L. Based on the RPA, the Town's collected dichlorobromomethane data
shows a reasonable potential to exceed the EPA criteria for WS streams. The Town's
dichlorobromomethane allowable discharge concentration is 1.3 µg/L; therefore, the monthly
monitoring for this constituent must continue.
o Bis(2-ethylhexyl) phthalate's effluent limit is calculated with its EPA criteria for water supply
(WS) streams, 0.32 µg/L. Based on the RPA, the Town's collected bis(2-ethylhexyl) phthalate
data shows a reasonable potential to exceed the EPA criteria for WS streams. The Town's
bis(2-ethylhexyl) phthalate allowable discharge concentration is 0.45 µg/L; therefore, monthly
monitoring and effluent limit for this constituent is added according to the RPA.
• To provide an opportunity for the Town to develop a plan to assess sources of Bis(2-
ethylhexyl) phthalate in order to come in compliance with the limit in Section A. (1.), a
3-year schedule of compliance has been added to the permit.
• Since the bis(2-ethylhexyl) phthalate limit is below its current PQL (< 10 µg/L), to show
compliance with the limit, the Division expects non -detects at the current PQL (if the
PQL gets updated, the Permittee must use the method with the updated PQL - the
method with the lowest detection level must be used).
• 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:
Nickel, silver, and cadmium
o Silver was reported at less than detection, with detection levels of < 5.0 µg/L, in the Effluent
Pollutant Scans and discharge monitoring reports (DMRs). Based on the RPA, the Town's total
Page 8 of 15

silver allowable discharge concentration is 0.06 µg/L. The DWR's laboratory identifies the target
Practical Quantification Limit (PQL) for silver as 1.0 µg/L. The method with the lowest detection
level must be used as required in the permit.
o Cadmium was reported at less than detection, with detection levels of < 2.0 µg/L, in the Effluent
Pollutant Scans and DMRs. Based on the RPA, the Town's cadmium allowable discharge
concentration is 1.08 µg/L. DWR's laboratory identifies the target PQL for cadmium as 0.5 µg/L.
The method with the lowest detection level must be used as required in the permit.
• 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,
chromium, cyanide, lead, selenium, zinc, chloroform, and total phenolic compounds.
Arsenic, cadmium, chromium, copper, lead, mercury, molybdenum, nickel, selenium, zinc, and
dichlorobromomethane are pollutants of concern (POCs) currently listed in the Short -Term Monitoring
Plan (STMP).
Arsenic, cadmium, chromium, copper, cyanide, lead, mercury, molybdenum, nickel, selenium, silver,
zinc, and dichlorobromomethane are pollutants currently listed in the STMP's sampling plan.
The Headworks Analysis (HWAs), allocation table (AT), and STMP need to be updated within 180
days of the effective date of this NPDES permit (or any subsequent permit modification).
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for additional
pollutants of concern.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL) with
monitoring, since as part of a limited data set, two samples exceeded the allowable discharge
concentration: NA
o The following parameter(s) will receive a monitor -only requirement, since as part of a limited
data set, one sample exceeded the allowable discharge concentration: NA
Additional notes:
• Arsenic, beryllium, cyanide, lead, and selenium had reported non -detects; however, based on the RPA,
the maximum predicted concentration for these compounds was > 50% of its allowable concentration.
Therefore, the method with the lowest detection level must be used — details about each compound
below.
o Arsenic was reported at less than detection, with detection levels of < 10.0 µg/L, in the Effluent
Pollutant Scans (EPS) and discharge monitoring reports (DMRs). Based on the RPA, the
predicted maximum concentration was > 50% of the allowable concentration, 7.0 µg/L. DWR's
laboratory identifies the target Practical Quantification Limit (PQL) for arsenic as 2.0 µg/L. The
method with the lowest detection level must be used.
o Beryllium was reported at less than detection, with detection levels of < 5.0 µg/L in the EPS and
DMRs. DWR's laboratory identifies the target PQL for beryllium as 5.0 µg/L. The method with
the lowest detection level must continue to be used.
o Cyanide was reported at less than detection, with detection levels of < 10.0 µg/L, in the EPS and
DMRs. DWR's laboratory identifies the target PQL for cyanide as 10.0 µg/L. The method with
the lowest detection level must continue to be used.
o Lead was reported at less than detection, with detection levels of < 10.0 µg/L, in the EPS and
DMRs. Based on the RPA, the Town's lead allowable discharge concentration is 7.1 µg/L.
DWR's laboratory identifies the target PQL for lead as 2.0 µg/L. The method with the lowest
detection level must be used.
o Selenium was reported at less than detection, with detection levels of < 10.0 µg/L, in the EPS
and DMRs. Based on the RPA, the Town's selenium allowable discharge concentration is 5.0
Page 9 of 15

µg/L. DWR's laboratory identifies the target PQL for selenium as 1.0 µg/L. The method with
the lowest detection level must be used.
15A NCAC 2B .0505 (e) (4) requires that all test procedures must produce detection and reporting
levels that are below the permit discharge requirements, and all data generated must be reported to the
approved detection level or lower reporting level of the procedure. If no approved methods can achieve
a detection level below the permit discharge requirement (or allowable discharge concentration), the
method with the lowest detection level must be used.
6.5 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: This is a Minor Publicly Owned Treatment Work (POTW) with an
active pretreatment program, and a chronic WET limit will continue on a quarterly frequency at Outfall 001 at
90% using Ceriodaphnia dubia.
6.6 Mercury Statewide Total Maximum Daily Load (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 lbs/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 multiple quantifiable levels of mercury (>1 ng/1) received 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 any of the 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.
A mercury evaluation was conducted in accordance with the Permitting Guidance developed for the
implementation of the statewide Mercury TMDL to determine the need for a limit. Below find summaries of
compliance mercury data from 2016 to 2021. Based on the dataset, the water quality -based effluent limitation
(WQBEL) for mercury is 12 ng/1 for 0.8 MGD.
Table 5. Mercury Effluent Data Summary — 0.8 MGD
2017
2018
2019
2020
2021
# of Samples
1
1
1
Mercury Annual Average (ng/1)
5.4
15.6
1.1
3.43
3.96
Mercury Annual Max (ng/1)
5.42
15.6
1.07
5.53
3.96
TBEL (ng/1)
47
WQBEL (ng/1)
12.0
Page 10 of 15

Describe proposed permit actions based on mercury evaluation: Mercury evaluation results used EPA Method
1631E. One annual average mercury concentration exceeded the WQBEL in this permit cycle, and no individual
mercury sample exceeded the TBEL. The maximum value reported in this period was 15.6 ng/1. Since an annual
average > WQBEL, the TMDL recommends adding an annual average WQBEL to the permit cycle with quarterly
monitoring; however, per best professional judgment (BPJ), since there is insufficient dataset to determine
reasonable potential to set a limit, the Division will increase the monitoring frequency to twice a year to collect
additional data. The Division will evaluate the TMDL in the next permit cycle and reassess the inclusion of a
WQBEL.
6.7 Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation within this
permit:
Effluent monitoring for total nitrogen (TN) and total phosphorous (TP) have been included in the permit per 15A
NCAC 02B .0508. The permit reflects the monthly nutrient (TP and TN; TKN + NO3-N + NO2-N) monitoring.
Annual nutrient TN and TP loads: The TN and TP annual loads were calculated with the monthly monitoring
reported during Jan 2017 to Dec 2020. The Facility is currently operating at a flow limit of 0.8 MGD, and there
are no proposed changes to the capacity.
Figure 4. Annual Effluent Nutrient Load Summary
20,000
18,000
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
Annual TN and TP Loads
2017 2018 2019
Annual TN load, lb/yr 16,175 18,848 14,094
Annual TP load, Ib/yr 2,254 1,642 2,151
2020
18,777
2,825
6.8 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 15A
NCAC 2H.0107(c)(2)(B), 40CFR 122.47, and EPA May 2007 Memo:
With this permit renewal the Division added 3-year compliance schedules for Bis(2-ethylhexyl) Phthalate and
copper.
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-215.3(e)
and 15A NCAC 2B. 0226 for this permit renewal: NA
Page 11 of 15

7. Technology -Based Effluent Limitations (TBELs)
Municipals (if not applicable, delete and skip to Industrials)
Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg/l
BOD5/TSS for Monthly Average, and 45 mg/l for BOD5/TSS for Weekly Average). YES
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA
Are 85% removal requirements for BOD5/TSS included in the permit? YES
If NO, provide a justification (e.g., waste stabilization pond). 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 2B.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
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 Frequency 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 2B.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.
With this permit renewal, the Division will be increasing the monitoring frequency for mercury from once a year
to twice a year. Also, with this renewal, the Town requested monitoring frequency reduction for BOD, TSS,
ammonia, and fecal coliform. Upon performing the monitoring reduction frequency evaluation from a period of
three years (1/2018 to 1/2021), this Facility met the approval criteria for monitoring reduction for TSS and ammonia;
therefore, the monitoring frequency for these parameters was changed from 3/Week to 2/Week for both effluent
and influent where applicable. The Town also requested the removal or reduction of daily effluent monitoring for
temperature. No changes for temperature monitoring are proposed per 15A NCAC 2B .0500 for Facilities Class III.
Daily temperature monitoring is required.
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.
Page 12 of 15

While NPDES regulated facilities would initially be required to submit additional NPDES reports electronically
effective December 21, 2020, EPA extended this deadline from December 21, 2020, to December 21, 2025. The
current compliance date, effective January 4, 2021, was extended as a final regulation change published in the
November 2, 2020, Federal Register. This permit contains the requirements for electronic reporting, consistent
with Federal requirements.
12.Summary of Proposed Permitting Actions
Table 6. Current Permit Conditions and Proposed Changes for 0.80 MGD.
Parameter
Current Permit Limits
and Monitoring
Frequency
Proposed Change
Basis for Condition/Change
Flow
MA 0.80 MGD
Continuous monitoring
Flo changes
15A NCAC 2B .0505
The average flow for the past five years
was 0.5 MGD
BOD5
Summer:
MA 5.0 mg/I
WA 7.5 mg/I
Winter:
MA 10.0 mg/I
WA 15.0 mg/I
Monitor 3/week
No changes
Based on DMR zero flow rule for
discharges into zero flow streams
15A NCAC 2B .0206(d)(1) and 1995
speculative limits
TSS
MA 30 mg/I
WA 45 mg/I
Monitor 3/week
Monitoring frequency
decreased to 2/week
TBEL. Secondary treatment
standards/40 CFR 133 / 15A NCAC 2B
.0406
2012 DWQ Guidance for Reduction of
Monitoring Frequencies in NPDES
Permits for Exceptionally Performing
Facilities
DO
Shall not be Tess than 6
mg/I
Monitor effluent and
instream 3/week
Clarification: monitor
instream at a
variable** frequency
Based on DMR zero flow rule for
discharges into zero flow streams
15A NCAC 2B .0206(d)(1) and 1995
speculative limits
pH
6 — 9 SU.
Monitor 3/week
No changes
WQBEL. State W.Q. standard, 15A NCAC
2B .0200
NH3-N
Summer:
MA 2.0 mg/I
WA 6.0 mg/I
Winter:
MA 4.0 mg/I
WA 12.0 mg/I
Monitor 3/week
Monitoring frequency
decreased to 2/week
Limits based on the 1995 WLA for
plant expansion based on WASP
Model
Monitoring according to 15A 02B
0508
2012 DWQ Guidance for Reduction of
Monitoring Frequencies in NPDES
Permits for Exceptionally Performing
Facilities
Page 13 of 15

Total residual chlorine
(TRC)
DM 17.0 µg/I
Monitor 3/week
No changes
WQBEL. State WQ standard, 15A NCAC
2B .0200. The Division considers all
effluent TRC values reported below 50
ug/I to comply with the permit.
Temperature
Monitor effluent daily
Monitor instream
3/week
Clarification: monitor
instream at a
variable** frequency
15A NCAC 2B.0200 and 15A NCAC
2B.0500
Conductivity
Monitor effluent and
instream 3/week
Clarification: monitor
and report instream at
a variable** frequency
The facility has industrial dischargers
15A NCAC 2B.0500
Fecal coliform
MA 200 /100m1
WA 400 /100m1
Monitor 3/week
No changes
WQBEL. State WQ standard, 15A NCAC
2B .0200
Stream is not impaired for fecal
Total Nitrogen (TN)
Monitor effluent
monthly
No changes
15A NCAC 02B .0508
Total Phosphorus (TP)
Monitor effluent
monthly
No changes
15A NCAC 02B .0508
Total Copper
Monitor effluent
quarterly
Added limit and
updated frequency
monitoring to monthly
MA: 15.6 µg/1
Added 3-year
compliance schedule
Based on the reasonable potential
analysis (RPA).
RPA Exists. Predicted Max > Allowable
Cw. 1 value > allowable Cw. Apply
monthly monitoring and add limit
Total Nickel
Monitor effluent
quarterly
No changes
Based on the RPA.
Predicted Max > 50% Allowable Cw -
Continue quarterly monitoring
Total Cadmium
Monitor effluent
quarterly
Footnote requiring to
test to its lowest
reporting level, 0.5 µg/1
No changes
Based on the RPA.
Dataset reported non -detect < 2 ug/L.
Predicted Max > 50% Allowable Cw.
Continue quarterly monitoring. Add
note about PQL
Total Silver
Monitor effluent
quarterly
Footnote requiring to
test to its lowest
reporting level, 1.0 µg/1
No changes
Based on the RPA.
Limited dataset reported non -detect (<
5 ug/L) Predicted Max > Allowable Cw.
Method with lowest PQL must be used.
Mercury
None
Modified monitoring
requirement from once
a year to twice a year
(Sample in May and
November)
2012 Statewide MercuryTMDL
BPJ
Total Hardness
Quarterly monitoring in
effluent
Added quarterly
instream monitoring
Hardness -dependent dissolved metals
water quality standards approved in
2016
Dichlorobromomethane
MA: 1.3 µg/1
No changes in limit, nor
monitoring frequency.
Based on the RPA.
Predicted Max > Allowable Cw
Page 14 of 15

Monitor effluent
monthly
EPA National Recommended Water
Quality Criteria for Water Supply
Bis(2-ethylhexyl)
Phthalate
Quarterly effluent
monitoring
Added limit and
updated frequency
monitoring to monthly
MA: 0.45 µg/I
Added 3-year
compliance schedule
Based on the RPA.
Predicted Max > Allowable Cw
EPA National Recommended Water
Quality Criteria for Water Supply
Chronic Toxicity Test
Chronic limit, 90% at 0.8
MGD
No changes
WQBEL. No toxics in toxic amounts.
15A NCAC 2B.0200 and 15A NCAC
2B.0500
Effluent Pollutant Scan
Three times per permit
cycle for 0.8 MGD
Next scans must be
performed in each of
the following years:
2023, 2024, and 2025.
40 CFR parts 423 and 122
Electronic Reporting
Electronic reporting
special condition
Added language for
new electronic
reporting deadline
December 21, 2025
In accordance with EPA Electronic
Reporting Rule 2015 and Rule -Phase 2
Extension
* MA - Monthly Average, WA — Weekly Average, DM — Daily Max.
** When applicable, variable monitoring frequency for dissolved oxygen, temperature, and conductivity is defined as follows: Samples collected three
times per week during June 1 through September 30 and once per week October 1 through May 31.
13.Public Notice Schedule
Permit to Public Notice: July 13, 2021
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. If you have questions regarding any of the above information or on the attached permit, please
contact Diana Yitbarek at [phone] or by email at [e-mail].
14.Fact Sheet Addendum (if applicable)
Were there any changes made since the Draft Permit was public noticed (Yes/No): NO
If Yes, list changes and their basis below: NA
15.Fact Sheet Attachments (upon request)
1. RPA Sheets Summary for 0.8 MGD: input information, data analyzed, and results summary.
2. BOD and TSS Removal Rate calculations
3. Reduced NPDES Permit Monitoring Reduction Frequency Assessment
4. NH3/TRC/Fecal Waste Load Allocation (WLA)
5. Mercury TMDL Calculations
6. Toxicity Summary/WET testing
7. Monitoring Report Violations summary
8. Renewal Application Addendums
o Signed Effluent Pollutant Scans
o Discharge Map
9. 303 d list (one page)
10. Pretreatment Summary and Pollutants of Concern (POC) review
11. Correspondence
12. NPDES Implementation of Instream Dissolved Metals Standards — Freshwater Standards
13. Public Water Supply Memo
14. Affidavit
Page 15 of 15

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
WWTP/WTP Class
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
HUC Number
Stream Class
❑ CHECK IF HQW OR ORW WQS
Town of Denton WWTP
III
NC0026689
001
0.800
Lick Creek
0304010306
WS-IV
I] Apply WS Hardness WQC
7Q10s (cfs)
7Q1Ow (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
0.000
0.00
0.09
0.50
0.00
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
55.71 mg/L (Avg)
26 mg/L (Avg)
55.71 mg/L
55.71 mg/L
Data Source(s)
Note: 7Q10S, 7Q10W, 30Q2, and QA values were
taken from previous fact sheet. Limited dataset for
arsenic, beryllium, chromium, cyanide, lead,
selenium, zinc, chloroform, and total phenolic
compounds
❑ CHECK TO APPLY MODEL
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
ParO�
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Par23
Par24
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
1.0808
FW
6.5186
ug/L
Chlorides
Water Supply
NC
250
WS
/ Chlorinated Phenolic Compounds
Water Supply
NC
1
A
ug/L
y Total Phenolic Compounds
Aquatic Life
NC
300
A
ug/L
Chromium III
Aquatic Life
NC
226.9327
FW
1744.5700
ug/L
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
15.6284
FW
22.2793
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
7.1986
FW
184.7293
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
ng/L
Molybdenum
Water Supply
NC
160
WS
ug/L
Nickel
Aquatic Life
NC
73.3339
FW
660.2547
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
1.1760
ug/L
Zinc
Aquatic Life
NC
249.8849
FW
247.8574
ug/L
Chloroform
Water Supply
NC
60
WS
pg/L
Dichlorobromomethane
Water Supply
C
0.95
WS
pg/L
Bis (2-Ethylhexyl) Phthalate
Water Supply
C
0.32
WS
pg/L
26689 RPA 0.8, input
7/5/2021

Town of Denton WWTP
NC0026689 Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.8000
1Q1OS (cfs) = 0.00
7Q10S (cfs) = 0.00
7Q10W (cfs) = 0.00
30Q2 (cfs) = 0.09
Avg. Stream Flow, QA (cfs) = 0.50
Receiving Stream: Lick Creek HUC 0304010306
WWTP/WTP Class: III
IWC% @ 1Q1OS = 100
IWC% @ 7Q1OS = 100
IWC%@7Q1OW= 100
IWC% @ 30Q2 = 93.23308271
IW%C @ QA = 71.26436782
Stream Class: WS-IV
Outfall 001
Qw = 0.8 MGD
COMBINED HARDNESS (mg/L)
Acute = 55.71 mg/L
Chronic= 55.71 mg/L
YOU HAVE DESIGNATED THIS RECEIVING
STREAM AS WATER SUPPLY
Effluent Hard: 2 value > 100 mg/L
Effluent Hard Avg = 55.71 mg/L
PARAMETER
TYPE
NC STANDARDS OR EPA CRITERIA
_1F
D
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
Chronic Applied Acute0_
Standard
n # Det. Max Pred Cw Allowable Cw
Arsenic
Arsenic
C
C
150 FW 340
10 HH/WS
ug/L
ug/L
5 0
Note: n < 9
Limited data set
11.6
C.V. (default)
NO DETECTS
Acute (FW): 340.0
Chr onic (FW): 15___ 0.0 _______________________________
Max MDL =10 _
Chronic (HH): 14.0
Max MDL = 10
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Limited dataset reported non -detect < 10 ug/I.
Predicted Max > 50% of Allowable Cw. - No
Monitoring required, other than pollutant scan (PS).
Beryllium
NC
6.5 FW 65
ug/L
3 0
Note: n < 9
Limited data set
7.50
C.V. (default)
NO DETECTS
Acute: 65.00
___ _ _______ _______________________________
Chronic: 6.50
Max MDL = 5
Limited dataset reported non -detect < 5 ug/L -
Predicted Max > Allowable Cw. No Monitoring
required, other than PS.
Cadmium
NC
1.0808 FW 6.5186
ug/L
23 0
1.000
NO DETECTS
Acute: 6.519
_ _
hron_i_ _ _ c: 1.081
Max MDL = 2
7ataset reported non -detect < -27j/7 P7dicted Max
> 50% Allowable Cw. Continue quarterly monitoring.
Add note about PQL
Total Phenolic Compounds
NC
300 A
ug/L
1 1
Note: n < 9
Limited data set
68.2
C.V. (default)
Acute: NO WQS
___ _ _______ _____
Chronic: 321.8
No value > Allowable Cw
_ _ _ _ _ ___ _ ___ _ _ _
Limited dataset. Predicted Max < 50% of Allowable
Cw. No Monitoring required, other than PS.
Chromium III
NC
226.9327 FW 1744.5700
µg/L
0 0
N/A
Acute: 1,744.6
---------------------------------
See Chromium, Total
Chromium VI
NC
11 FW 16
µg/L
0 0
N/A
>_ 5 but < Cr VI Allowable
5.4
C.V. (default)
NO DETECTS
Acute: 16.0
---------------------------------
See Chromium, Total
Chromium, Total
NC
µg/L
Tot Cr value(s)
6 0
Note: n <9
Limited data set
Cw
Max reported value = 2.5
Max MDL = 5
a: No monitoring required if all Total Chromium
samples are < 5 pg/L and Pred. max for Total Cr is <
allowable Cw for Cr VI.
Copper
NC
15.6284 FW 22.2793
ug/L
23 23
18.24
Acute: 22.28
Chronic: 15.63
1 value(s) > Allowable Cw
RPA Exists. Predicted Max > Allowable Cw. 1 value
> allowable Cw. Apply monthly monitoring and add
limit
Page 1 of 24
26689 RPA 0.8, rpa
7/5/2021

Town of Denton WWTP
NC0026689
Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
Outfall 001
Qw = 0.8 MGD
Cyanide
NC
5 FW 22
10
ug/L
4 0
Note: n < 9
Limited data set
13.0
C.V. (default)
NO DETECTS
Acute: 22.0
_ _ _ _ _ _ _ _ _
Chronic: 5.0
Max MDL = 10
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Limited dataset reported non -detect. Predicted Max >
Allowable Cw. Maintain method with lowest detection
level
Lead
NC
7.1986 FW 184.7293
ug/L
6 0
Note: n <9
Limited data set
10.700
C.V. (default)
NO DETECTS
Acute: 184.729
_ _ _ _ _ _ _ _ _
Chronic: 7.199
Max MDL = 10
_ _ _ _ _ _ _ _ _ _ _ _ _ _
Limited dataset reported non -detect < 10 ug/L
Predicted Max > Allowable Cw. Method with lowest
PQL must be used.
Molybdenum
NC
160 WS
ug/L
3 0
Note: n < 9
Limited data set
7.5
C.V. (default)
NO DETECTS
Acute: NO WQS
___ _ _______ _____
Chronic: 160.0
Max MDL = 5
_ _ _ _ _ _ _ _ _____
No RP. Predicted Max < 50% Allowable Cw
Nickel
Nickel
NC
NC
73.3339 FW 660.2547
25.0000 WS
µg/L
µg L
23 2
13.3
Acute (FW): 660.3
Chronic (FW): 73.3
owable lloab_leCw
No_ > All_ _ --
Chronic (WS): 25.0
No value > Allowable Cw
I- - - - - - - - - - - -
Predicted Max > 50% Allowable Cw - Continue
quarterly monitoring
Selenium
NC
5 FW 56
ug/L
6 0
Note: n < 9
Limited data set
10.7
C.V. (default)
NO DETECTS
Acute: 56.0
___ _ _______ _______________________________
Chronic: 5.0
Max MDL = 10
Limited dataset reported non -detect < 10 ug/L.
Predicted Max > Allowable Cw. Method with lowest
PQL must be used.
Silver
NC
0.06 FW 1.1760
ug'L
23 0
2.650
NO DETECTS
Acute: 1.176
___ _ _______ _____
Chronic: 0.060
Max MDL = 5
_ _ _ _ _ _ _ _ _ _ _____
Limited dataset reported non -detect (< 5 ug/L)
Predicted Max > Allowable Cw. Method with lowest
PQL must be used.
Zinc
NC
249.8849 FW 247.8574
ug/L
5 5
Note: n < 9
Limited data set
123.0
C.V. (default)
Acute: 247.9
Chronic: 249.9
No value > Allowable Cw
Limited dataset. Predicted Max < 50% of Allowable
Cw.
Chloroform
NC
60 WS
iig!L
3 3
Note: n < 9
Limited data set
53.40000
C.V. (default)
Acute: NO WQS
Chronic: 60.000
No value > Allowable Cw
Limited dataset. Predicted Max > 50% of Allowable
Cw. No value> allowable Cw - No Monitoring
required other than PS
Dichlorobromomethane
C
0.95 WS
µg/L
58 40
7.20000
Acute: NO WQS
Chronic: 1.33306
33 value(s) > Allowable Cw
RP exists. Predicted Max > Allowable Cw. 40 values
> allowable Cw - Continue monthlly monitoring and
adjust limit
Bis (2-Ethylhexyl) Phthalate
C
0.32 WS
µg/L
21 1
20.12500
Acute: NO WQS
-- _ _ _ ----_ _
Chronic:0.44903
21 value(s) > Allowable Cw
------
RP exists. Predicted Max > Allowable Cw. 21 values
> allowable Cw - Set monthlly monitoring and limit
Page 2 of 24
26689 RPA 0.8, rpa
7/5/2021

REASONABLE POTENTIAL ANALYSIS
H1
Effluent Hardness
Date Data BDL=1/2DL Results
1 8/2/2016 116 116 Std Dev.
2 11 /1 /2016 100 100 Mean
3 2/6/2017 96 96 C.V.
4 5/1/2017 92 92 n
5 8/1/2017 96 96 10th Per value
6 11/6/2017 48 48 Average Value
7 2/5/2018 32 32 Max. Value
8 5/1/2018 48 48
9 8/6/2018 76 76
10 11/27/2018 60 60
11 2/4/2019 60 60
12 5/1/2019 56 56
13 8/5/2019 40 40
14 11/18/2019 37.6 37.6
15 2/4/2020 40 40
16 2/10/2020 20 20
17 2/17/2020 24 24
18 2/24/2020 28 28
19 5/4/2020 36 36
20 8/3/2020 40 40
21 11/2/2020 36 36
22 2/2/2021 44 44
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values.' then "COPY" .
Maximum data points
= 58
27.8779
55.7091
0.5004
22
28.40 mg/L
55.71 mg/L
116.00 mg/L
H2
Upstream Hardness
Date Data BDL=1/2DL Results
1 1/22/2020 24.00 24 Std Dev.
2 1/28/2020 24.00 24 Mean
3 2/5/2020 24.00 24 C.V.
4 2/11/2020 20.00 20 n
5 2/18/2020 24.00 24 10th Per value
6 2/25/2020 28.00 28 Average Value
7 3/10/2020 28.00 28 Max. Value
8 3/17/2020 32.00 32
9 3/24/2020 28.00 28
10 4/1/2020 28.00 28
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values.' then "COPY" .
Maximum data points
= 58
3.3993
26.0000
0.1307
10
23.60 mg/L
26.00 mg/L
32.00 mg/L
-6-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par01 & Par02
Arsenic
Date Data
2/13/2017
5/7/2018 <
11/18/2019
10/12/2020 <
1/13/2021 <
BDL=1/2DL Results
10 5 Std Dev.
10 5 Mean
10 5 C.V. (default)
10 5 n
10 5
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
0.0000
5.0000
0.6000
5
2.32
5.0 ug/L
11.6 ug/L
-7-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par03
Beryllium
Date Data
2/13/2017 <
5/7/2018 <
11/18/2019 <
BDL=1/2DL Results
5 2.5 Std Dev.
5 2.5 Mean
5 2.5 C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
0.0000
2.5000
0.6000
3
3.00
2.50 ug/L
7.50 ug/L
Par04
Cadmium
Date
8/2/2016
11/1/2016
2/6/2017
5/1/2017
8/1/2017
11/6/2017
2/5/2018
5/1/2018
5/8/2018
8/6/2018
11/6/2018
2/4/2019
5/1/2019
8/5/2019
11/4/2019
2/4/2020
5/4/2020
7/14/2020
8/3/2020
10/12/2020
11/2/2020
1/13/2021
2/2/2021
Data
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
BDL=1/2DL Results
1 Std Dev.
1 Mean
1 C.V.
1 n
1
1 Mult Factor =
1 Max. Value
1 Max. Pred Cw
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
0.0000
1.0000
0.0000
23
1.00
1.000 ug/L
1.000 ug/L
-8-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par07
Total Phenolic Compounds
Date Data
2/13/2017
5/7/2018 <
11/18/2019
BDL=1/2DL Results
11 11 Std Dev.
10 Mean 11.0000
11 C.V. (default) 0.6000
n 1
Use "PASTE SPECIAL
Values" then "COPY" .
Maxim um data points
= 58
Mult Factor = 6.20
Max. Value 11.0 ug/L
Max. Pred Cw 68.2 ug/L
Par10
Chromium, Total
Date Data BDL=1/2DL Results
1 2/13/2017 ` 5.00 2.5 Std Dev.
2 5/7/2018 < 5.00 2.5 Mean
3 11/18/2019 ` 5.00 2.5 C.V. (default)
4 7/14/2020 < 5.00 2.5 n
5 10/12/2020 < 5.00 2.5
6 1/13/2021 < 5.00 2.5 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY" .
Maxim um data points
= 58
0.0000
2.5000
0.6000
6
2.14
2.5 pg/L
5.4 pg/L
-9-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Pal
Copper
Date Data BDL=1/2DL Results
1 8/2/2016 9 9 Std Dev.
2 11/1/2016 11 11 Mean
3 2/6/2017 9 9 C.V.
4 5/1/2017 10 10 n
5 8/1/2017 11 11
6 11/6/2017 8 8 Mult Factor =
7 2/5/2018 6 6 Max. Value
8 5/1/2018 14 14 Max. Pred Cw
9 5/8/2018 15 15
10 8/6/2018 9 9
11 11/6/2018 12 12
12 2/4/2019 16 16
13 5/1/2019 9 9
14 8/5/2019 12 12
15 11/4/2019 10 10
16 2/4/2020 9 9
17 5/4/2020 11 11
18 7/14/2020 9 9
19 8/3/2020 6 6
20 10/12/2020 5 5
21 11/2/2020 7 7
22 1/13/2021 11 11
23 2/2/2021 9 9
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
2.7455
9.9130
0.2770
23
1.14
16.00 ug/L
18.24 ug/L
Par12
Cyanide
Date Data
5/7/2018 < 5
11/18/2019 < 5
10/21/2020 < 5
1/13/2021 < 5
BDL=1/2DL Results
5 Std Dev.
5 Mean
5 C.V. (default)
5 n
Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
0.0000
5.00
0.6000
4
2.59
5.0 ug/L
13.0 ug/L
-10-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par14
Lead
Date BDL=1/2DL Results
1 2/13/2017 ` 10 5 Std Dev.
2 5/7/2018 < 10 5 Mean
3 11/18/2019 ` 10 5 C.V. (default)
4 7/14/2020 < 10 5 n
5 10/12/2020 < 10 5
6 1/13/2021 < 10 5 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
0.0000
5.0000
0.6000
6
2.14
5.000 ug/L
10.700 ug/L
Par15
Mercu ry
Date Data
2/13/2017
5/7/2018
11/18/2019
7/15/2020
10/21/2020
1/14/2021
5.42
15.60
1.07
5.53
1.32
3.96
BDL=1/2DL Results
5.42 Std Dev.
15.6 Mean
1.07 C.V. (default)
5.53 n
1.32
3.96 Mult Factor =
Max. Value
Max. Pred Cw
Use "PASTE SPECIAL.
Values" then "COPY" .
Maximum data points
= 58
5.3195
5.4833
0.6000
6
2.14
15.6 ng/L
33.4 ng/L
-11-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par16
Molybdenum
Date Data BDL=1/2DL Results
1 7/14/2020 ` 5 2.5 Std Dev.
2 10/12/2020 < 5 2.5 Mean
3 1/13/2021 ` 5 2.5 C.V. (default)
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
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values" then "COPY" .
Maxim um data points
= 58
0.0000
2.5000
0.6000
3
3.00
2.5 ug/L
7.5 ug/L
Par17 & Par18
Nickel
Date Data
8/2/2016 < 10
11/1/2016 < 10
2/6/2017 < 10
5/1/2017 < 10
8/1/2017 < 10
11/6/2017 < 10
2/5/2018 < 10
5/1/2018 10
5/8/2018 < 10
8/6/2018 < 10
11/6/2018 < 10
2/4/2019 11
5/1/2019 < 10
8/5/2019 < 10
11/4/2019 < 10
2/4/2020 < 1
5/4/2020 < 10
7/14/2020 < 10
8/3/2020 < 1
10/12/2020 < 10
11/2/2020 < 10
1/13/2021 < 10
2/2/2021 < 10
BDL=1/2DL Results
5 Std Dev.
5 Mean
5 C.V.
5 n
5
5 Mult Factor =
5 Max. Value
10 Max. Pred Cw
5
5
5
11
5
5
5
0.5
5
5
0.5
5
5
5
5
Use"PASTE
SPECIAL -Values"
then "COPY" .
Maximum data
points = 58
2.1461
5.0870
0.4219
23
1.21
11.0 pg/L
13.3 pg/L
-12-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par19
Selenium
Date Data BDL=1/2DL Results
1 2/13/2017 < 10.00 5 Std Dev.
2 5/7/2018 < 10.00 5 Mean
3 11/18/2019 < 10.00 5 C.V. (default)
4 7/14/2020 < 10.00 5 n
5 10/12/2020 < 10.00 5
6 1/13/2021 < 10.00 5 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE
SPECIAL -Values
then "COPY" .
Maximum data
points = 58
Par20
Silver
0.0000
5.0000
0.6000
6
2.14
5.0 ug/L
10.7 ug/L
Date
8/2/2016
11/1/2016
2/6/2017
5/1/2017
8/1/2017
11/6/2017
2/5/2018
5/1/2018
5/8/2018
8/8/2018
11/6/2018
2/4/2019
5/1/2019
8/5/2019
11/4/2019
2/4/2020
5/4/2020
7/14/2020
8/3/2020
10/12/2020
11/2/2020
1/13/2021
2/2/2021
Data
5
5
5
5
5
5
5
5
5
5
5
5
5
2
5
5
5
5
5
5
5
5
5
BDL=1/2DL Results
2.5 Std Dev.
2.5 Mean
2.5 C.V.
2.5 n
2.5
2.5 Mult Factor =
2.5 Max. Value
2.5 Max. Pred Cw
2.5
2.5
2.5
2.5
2.5
1
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points =
58
0.3128
2.4348
0.1285
23
1.06
2.500 ug/L
2.650 ug/L
-13-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
Par21
Zinc
Date Data BDL=1/2DL Results
1 2/13/2017 42 42 Std Dev.
2 5/7/2018 53 53 Mean
3 11/18/2019 30 30 C.V. (default)
4 10/12/2020 17 17 n
5 1/13/2021 36 36
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL.
Values.' then "COPY" .
Maximum data points
= 58
13.4276
35.6000
0.6000
5
2.32
53.0 ug/L
123.0 ug/L
Par22
Chloroform
Use "PASTE SPEC
Values" then "CO
Maximum data poin
Date Data BDL=1/2DL Results
1 2/13/2017 17.8 17.8 Std Dev. 4.2938
2 5/7/2018 9.39 9.39 Mean 14.0967
3 11/18/2019 15.1 15.1 C.V. (default) 0.6000
4 n 3
5
6 Mult Factor = 3.00
7 Max. Value 17.800000
8 Max. Pred Cw 53.400000
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
-14-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
7.IAL-
is-58
Par23
Dichlorobromomethane
Date Mc Value BDL=1/2DL Results
1 8/9/2016 3.61 3.61 Std Dev.
2 9/12/2016 6.64 6.64 Mean
3 9/29/2016 7.2 7.2 C.V.
4 10/19/2016 5.32 5.32 n
5 11/1/2016 5.04 5.04
6 12/5/2016 2.5 2.5 Mult Factor =
Ng/L 7 1/2/2017 < 2 1 Max. Value
pg/L 8 2/7/2017 1.9 1.9 Max. Pred Cw
9 3/1/2017 < 1 0.5
10 4/2/2017 1.81 1.81
11 5/1/2017 1.99 1.99
12 6/5/2017 < 1 0.5
13 7/4/2017 4.05 4.05
14 8/1/2017 2.94 2.94
15 9/6/2017 1.64 1.64
16 10/9/2017 3.35 3.35
17 11/6/2017 2.24 2.24
18 12/4/2017 1.46 1.46
19 1/4/2018 < 1 0.5
20 2/5/2018 1.14 1.14
21 3/5/2018 1.3 1.3
22 4/9/2018 1.3 1.3
23 5/1/2018 1.74 1.74
24 5/8/2018 2.68 2.68
25 6/4/2018 2.98 2.98
26 7/10/2018 2.89 2.89
27 8/6/2018 6.72 6.72
28 9/4/2018 3.31 3.31
29 10/1/2018 2.17 2.17
30 11/6/2018 1.3 1.3
31 12/3/2018 1.27 1.27
32 1/1/2019 < 1 0.5
33 2/4/2019 1.53 1.53
34 3/4/2019 1.3 1.3
35 4/9/2019 1.4 1.4
36 5/1/2019 1.8 1.8
37 6/11/2019 < 1 0.5
38 7/22/2019 < 1 0.5
39 8/5/2019 2.77 2.77
40 9/2/2019 1.85 1.85
41 10/ 14/2 019 1.66 1.66
42 11/4/2019 < 1 0.5
43 12/3/2019 1.56 1.56
44 1/6/2020 < 1 0.5
45 2/10/2020 < 1 0.5
46 3/11/2020 1.5 1.5
47 3/31/2020 1.6 1.6
48 4/20/2020 < 1 0.5
49 5/6/2020 < 1 0.5
50 6/1/2020 < 1 0.5
51 7/14/2020 3.9 3.9
52 8/3/2020 < 1 0.5
53 9/1/2020 < 1 0.5
54 10/5/2020 < 1 0.5
55 10/12/2020 1.66 1.66
56 11/19/2020 1.2 1.2
57 12/2/2020 < 1 0.5
58 1/13/2021 < 1 0.5
Use "PASTE SPECIAL -Values" then
"COPY" . Maximum data points = 58
Par24
Bis (2-Ethylhexyl) Ph
1.6444
1.9607
0.8387
58
1.00
7.200000 pg/L
7.200000 pg/L
Date Data BDL=1/2DL
1 8/9/2016 < 10 5
2 11/1/2016 < 10 5
3 2/7/2017 < 10 5
4 5/1/2017 < 10 5
5 8/1/2017 < 10 5
6 11/6/2017 16.1 16.1
7 2/5/2018 < 10 5
8 5/1/2018 < 10 5
9 5/8/2018 < 10 5
10 8/6/2018 < 10 5
11 11/27/2018 < 10 5
12 2/4/2019 < 10 5
13 5/1/2019 < 10 5
14 8/5/2019 < 10 5
15 11/18/2019 < 10 5
16 12/3/2019 < 10 5
17 3/31/2020 < 10 5
18 5/11/2020 < 10 5
19 8/3/2020 < 10 5
20 11/2/2020 < 10 5
21 2/10/2021 < 10 5
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
-15-
26689 RPA 0.8, data
7/5/2021

REASONABLE POTENTIAL ANALYSIS
thalate
Results
Std Dev. 2.4222
Mean 5.5286
C.V. 0.4381
n 21
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points = 58
Mult Factor = 1.25
Max. Value 16.100000 pg/L
Max. Pred Cw 20.125000 pg/L
-16-
26689 RPA 0.8, data
7/5/2021

Date: 7/5/2021
Dissolved to Total Metal Calculator
Do NOT enter any data directly into this spreadsheet.
Enter data onto "Table 1" under the Input Sheet and enter
"Effluent Hardness" under the Data Sheet.
In accordance with 40 CFR 122.45 (c ), permits are, have and
must be written as total metals.
This calculator has been inserted into the RPA to calculate
Total Metal allowable allocations once Table 1 has been
completed (Input Sheet) and Effluent hardness has been
entered (Data Sheet).
1) Following the spreadsheet from left to right. First
the allowable allocations for the dissolved metals will
appear for all the metals listed once Table 1 is complete
and effluent hardness entered. Use a default value of 25
mg/L if no hardness data is available. Second
the Dissolved Metal allocations are divided by the
Translators to determine the Total Metals that can be
allocated to the Permittee. These Total Metals values are
automatically inserted into Table 2 and are the allowable
Total Metal allocations determined for the Permittee prior
to allowing for dilution. See Input sheet Table 2. The final
acute and chronic values shown under the RPA sheet are
the Total Metal values listed in Table 2 divided by the
acute and chronic IWC, respectively.
2) The Translators used in the freshwater RPA are the
Partition Coefficients published by US EPA in 1984. They
are TSS dependent equations and can be found listed with
the WQS hardness dependent equations under the sheet
labeled Equations. A fixed TSS value of 10 mg/L is used to
calculate the Translator values.
3) Pretreatment Facilities - PERCS will need a copy of the
Dissolved to Total Metal Calculator spreadsheet and the
RPA sheet along with the Final Permit. Pretreatment
Facilities are required to renew their Headwords Analysis
after renewal of their permits. Since all their metal
allocations are likely to change PERCS needs to see any
new metal permit limits and the allowable allocations for
the dissolved metals to assess Maximum Allowable
Headworks Loading (MAHL) numbers for each metal based
on the Combined Hardness values used in the permit
writers RPA calculations.
4) For Cadmium, Lead, Nickel, Chromium and Beryllium, if all
the effluent sampling data for the last three to five years
shows the pollutant at concentrations less than the
Practical Quantitative Level (PQL), it is not likely a limit or
monitoring will be put in the permit. However, if the
estimated NPDES permit limit is less than the Practical
Quantitative Limit (particularly, Cadmium and Lead) and
the pollutant is believed to be present, to assess
compliance with the new standards and for future permit
limit development, monitoring for the pollutant will be
required. If the facility is monitoring for the pollutant in its
Pretreatment LTMP, no monitoring is needed in the
FACILITY: Town of Denton WWTP Outtall 001
NPDES PERMIT: NC0026689
Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
Receiving
Stream
SUMIller
7010 (CFS)
0.0000
Receiving
Stream summer
7010 (MGD)
0.0000
Rec. Stream
1010
IMGD]
0.0000
NPDES
Flow Lima
MGD
0.8000
Total Suspended
Solids
-Fixed Value -
OWL)
Combined
Hardness
chronic
(mg/L)
55. 709
Combined
Hardness
Acute
(mg/L)
Instream
Wastewater
Concentration
(Chronic)
55.709 100.0000
stream
Wastewater
Concentration
(Acute)
100. 0000
Upstream
Hardness
Average(mg/L)
26
Effluent
Hardness
Average
(mg/L)
55.70909
Upstream Hard Avg (mg/L) = 26
EFF Hard Avg (mg/L) = 55.70909
PARAMETER
Cadmium (d)
Cd -Trout streams
Dissolved Metals Criteria
after appying hardness
uation
Chronic Acute
lug/I] lug/I]
0.27 1.65
0.27 1.02
US EPA
Translators- using
Default Parhtion
Coefficients
(streams)
0.252
0.252
Total Metal Criteria Total Metal=
Dissolved Metal - Translator
Chronic
Acute
lug/I]
1.08
1.08
lug/I]
6.52
4.05
Chromium III (d)(h)
Chromium VI (d)
Chromium, Total (t)
Copper (d)(h)
Lead (d)(h)
Nickel (d)(h)
Ni - WS streams (t)
Silver (d)(h,acute)
Zinc (d)(h)
46 353
11 16
5.4 7.7
1.32 34
32 285
0.06 1.18
72 71
0.202
1.000
0.348
0.184
0.432
1.000
0.288
226.93
11.00
N/A
15.63
7.20
73.33
1744.57
16.00
N/A
22.28
184.73
660.25
25 N/A
0.06 1.18
249.88 247.86
Beryllium
1.000
Arsenic (d) 1.000
6.5
150
65
340
COMMENTS (identify parameters to PERCS Branch to maintain in facilays LTMP/STMP):
(d) = dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(h) =hardness -dependent dissolved metal standard. See 15A NCAC 026.0211 for more information.
(t) = based upon measurement of total recoveable metal. See 15A NCAC 02B .0211 for more information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic is 10 pg/L which is Total Recoverable metal standard.
ACAH 55.70909
ACCH 55.70909

NC0026689 Denton WWTP 5/28/2021
BOD monthly removal rate
Month RR (%) Month RR (%)
August-16
September-16
October-16
November-16
December-16
January-17
February-17
March-17
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
99.07
98.72
98.73
99.28
98.32
97.58
97.88
97.16
98.32
98.27
98.55
99.19
98.77
98.26
98.46
98.29
98.06
96.89
97.97
96.72
98.31
98.72
99.31
99.56
99.33
99.49
99.51
97.68
96.85
97.07
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
Overall BOD removal rate
95.90
98.35
99.10
98.70
99.12
99.29
99.03
99.33
99.44
99.64
98.68
97.46
98.40
98.66
98.39
97.71
97.96
98.70
99.09
99.43
99.00
97.94
96.00
96.30
96.18
97.59
98.32
TSS monthly removal rate
Month RR (%) Month
RR (%)
August-16
September-16
October-16
November-16
December-16
January-17
February-17
March-17
April-17
May-17
June-17
July-17
August-17
September-17
October-17
November-17
December-17
January-18
February-18
March-18
April-18
May-18
June-18
July-18
August-18
September-18
October-18
November-18
December-18
January-19
99.25
98.19
98.64
99.07
97.99
95.87
93.18
92.96
96.41
95.73
97.94
98.88
98.93
97.80
99.07
98.43
96.95
95.40
97.13
96.73
97.74
98.80
99.58
99.79
99.61
99.70
99.71
97.37
94.21
96.56
February-19
March-19
April-19
May-19
June-19
July-19
August-19
September-19
October-19
November-19
December-19
January-20
February-20
March-20
April-20
May-20
June-20
July-20
August-20
September-20
October-20
November-20
December-20
January-21
February-21
March-21
Overall TSS removal rate
94.94
97.32
98.87
98.23
99.31
99.03
99.03
98.56
99.65
99.63
98.36
94.98
98.27
97.75
96.19
95.25
95.25
99.00
97.53
99.33
99.38
94.79
92.23
93.10
93.47
96.11
97.56

Reduction in Frequency Evaluation
Facility:
Denton WWTP
Facility Class/Flow:
Class III /0.8 MGD
Permit No.
NC0026689
Review period (use
3 yrs)
01/01/2018 - 01/01/2021
Approval Criteria:
Y/N?
1. Currently under Special Orders by
N
Consent (SOC) (3)
2. On EPA Quarterly noncompliance
N
report
3. Facility or employees convicted of
CWA violations within the last five
years (2)
N
4. More than one civil penalty
N
assessment for permit limit
violations for each target parameter
during previous three years (1)
Data Review
Units
WA
MA
50%
MA
(4,5)
3-yr mean
(geo mean
for FC) (4,5)
< 50%?
(4,5)
200%
MA
(6)
# daily
samples
>200%
(6)
<15?
(6)
200%
WA
(7)
# daily
samples
>200%
(7)
< 20?
(7)
# of non-
monthly
limit
violations
> 2?
# civil
penalty
asessment
> 1?
Reduce
Frequency?
(Yes/No)
BOD (summer)
mg/L
7.5
5
2.5
3.422742857
N
10
2
Y
0
N
0
N
N
BOD (winter)
mg/L
15
10
5
2.795098039
Y
20
0
Y
0
N
0
N
Y
TSS
mg/L
45
30
15
5.56018711
Y
60
0
Y
0
N
0
N
Y
Ammonia (summer)
mg/L
6
2
1
0.110583942
Y
4
0
Y
0
N
0
N
Y
Ammonia (winter)
mg/L
12
4
2
0.147342995
Y
8
0
Y
0
N
0
N
Y
Fecal Coliform
#/100
400
200
100
16.34151605
Y
'
800 I 0 I Y
1
N
4
Y
N

Approval Criteria to Check:
1) this facility has not received a civil penalty for a permit violation of the target parameters in the last three years
2) Neither the permittee nor any of its employee have been convicted of criminal violation of the CWA within the previous five years
3) This facility is not under an SOC for target parameter effluent limit noncompliance
4) Three year arithmetic mean is less than fifty percent of the monthly average permit limit for BOD5, TSS and NH3-N
5) Three year geometric mean is less than fifty percent of the monthly average permit limit for fecal coliform
6) Less than 15 daily sampling results over the three year review period are in excess of 200% of the monthly average for BOD5, TSS and NH3-N
7) Less than 20 daily sampling results over the three year review period are in excess of 200% of the weekly average for fecal coliform
8) This facility has not received any non -monthly average limit violations in the past year for the four target parameters
Source: http://portal.ncdenr.org/c/document library/get file?uuid=90fdd082-6172-42c0-b4ee-cf3968502019&groupld=38364
Conclusion: The facility meets the approval criteria for monitoring reduction for TSS and ammonia.

NH3/TRC WLA Calculations
Facility: Town of Denton Wastewater Treatment Plant (WWTP)
Permit No. NC0026689
Prepared By: Diana Yitbarek
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
0.8
0
0
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Maintain limit at 17 ug/I
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
Maintain 200/100 ml MA limit
0
0.8
1.24
17.0
0
100.00
17
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Current MA limit: 2.0 mg/I
Zero flow policy limit 2.0 mg/I
Maintain current MA limit
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
1.00 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Current MA limit: 4.0 mg/I
Zero flow policy limit 2.0 mg/I (apply if expanding)
Maintain current MA limit
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
0
0.8
1.24
1.0
0.22
100.00
1.0
0
0.8
1.24
1.8
0.22
100.00
1.8
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
Regulations f15A NCAC 2B .0206 (d)1 were developed to set effluent limitations for new and expanding
discharges in zero flow streams (5 mg/I BOD5, 2 mg/I NH3-N and 6 mg/I dissolved oxygen (DO))

Denton WWTP/NC0026689
Mercury Data Statistics (Method 1631E)
2017
2018
2019
2020
# of Samples
1
1
1
2
Annual Average, ng/L
5.4
15.6
1.1
3.43
Maximum Value, ng/L
5.42
15.60
1.07
5.53
TBEL, ng/L
47
WQBEL, ng/L
12.0
2021
1
3.96
3.96

6/24/21 WQS = 12 ng/L
Facility Name Denton WWTP/NC0026689
/Permit No. :
MERCURY WQBEL/TBEL EVALUATION V:2013-6
Total Mercury 1631E PQL = 0.5 ng/L 7Q10s =
Date Modifier Data Entry Value Permitted Flow =
2/13/2017
5/7/2018
11/ 18/ 2019
7/15/2020
10/21/2020
1/14/2021
Add WQBEL
No MMP Required
5.42 5.42
15.60 15.6
1.07 1.07
5.53 5.53
1.32 1.32
3.96 3.96
0.000
0.800
cfs
WQBEL =
12.00 ng/L
47 ng/L
5.4 ng/L - Annual Average for 2017
WQBEL< 15.6 ng/L - Annual Average for 2018
1.1 ng/L - Annual Average for 2019
3.4 ng/L - Annual Average for 2020
4.0 ng/L - Annual Average for 2021

Whole Effluent Toxicity Testing and Self Monitoring Summary
Deer Chase Subdivision WWTP NC0063746/001 County: Wake Region: RRO Basin: NEU02 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 2/1/2018 chr lim: 90% @ 0.05 NonComp: Single 7Q10: 0.0 PF: 0.05 IWC: 100 Freq: Q
J F M A M J J A 5 0 N D
2016 Pass Pass - - Pass Pass -
2017 Fail >100 >100 >100 Pass Fail >100 >100 Pass -
2015 Fail <22.5 <22.5 Fail >100 >100 Pass - Pass -
2019 Pass Pass - Pass - Pass -
2020 Pass Pass - Pass - -
Denton WTP, Town of NC0082949/001 County: Davidson Region: WSRO
Ceri7dPF Begin: 5/1/2014 Chr Monit: 90% NonComp: 7Q10:
J F M A M J
2016 Fail Pass
2017 - Pass - - Pass
2018 - Pass - - Pass
2019 - Pass - - Pass
2020 - Pass - - Pass
J
Basin: YADO8 Feb May Aug Nov
PF: IWC: Freq: Q
A 5 0
Fail - -
Pass - -
Pass - -
Pass - -
SOC_JOC:
N
Fail
Pass
Pass
Fail
Denton WWTP NC0026689/001 County: Davidson Region: WSRO Basin: YADO8 Feb May Aug Nov SOC JOC:
Ceri7dPF Begin: 8/1/2016 chr lim: 90% NonComp: Single 7Q10: 0.0 PF: 0.8 IWC: 100 Freq: Q
J F M A M J J A 5 0 N
2016 Pass >100(P) Pass - - Pass - - Pass
2017 - Pass >100(P) - - Pass - - Pass - - Pass
2018 - Pass - - Pass >100(P) - - Pass - - Pass
2019 - Pass - - Pass - - >100(P) Pass - - Pass
2020 - Pass - - Pass - - - -
Diamond Head Subdivision WWTP NC0074772/001 County: Iredell Region: MRO Basin: CTB01 Jan Apr Jul Oct SOC JOC:
Ceri7dPF Begin: 8/1/2017 Chr Cer PF Lim: 90% NonComp: 7Q10: PF: IWC: Freq: Q
D
D
J F M A M J J A 5 0 N D
2018 Pass Pass - - Pass - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - - - -
Dixon WTP - Onslow Water & Sewer Aut NC0083551/001 County: Onslow Region: WIRO Basin: WOK02 Jan Apr Jul Oct SOC JOC:
Mysd24PF Begin: 1/1/2018 Ac P/F Monit: 90% M NonComp: 7Q10: PF: IWC: Freq: Q
J F M A M J J A 5 0 N D
2016 Pass Fail - - Fail - - Fail -
2017 Fail Fail - - Fail - - Fail -
2015 Fail Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - -
Legend: P= Fathead minnow (Pimphales promelas), H=No Flow (facility is active), s = Split test between Certified Labs
Page 34 of 122

Whole Effluent Toxicity Testing and Self Monitoring Summary
Deer Chase Subdivision WWTP NC0063746/001 County: Wake Region: RRO Basin: NEU02 Jan Apr Jul Oct
Ceri7dPF Begin: 2/1/2018 chr lim: 90% @ 0.05 NonComp: Single 7Q10: 0.0 PF: 0.05 IWC: 100 Freq: Q
SOC JOC:
J F M A M J J A S 0 N D
2017 Fail >100 >100 >100 Pass Fail >100 >100 Pass -
2018 Fail <22.5 <22.5 Fail >100 >100 Pass Pass -
2019 Pass Pass - Pass Pass -
2020 Pass - Pass - - Pass - - Pass -
2021 Pass - - - - - -
Denton WTP, Town of NC0082949/001 County: Davidson Region: WSRO Basin: YADO8 Feb May Aug Nov
Ceri7dPF Begin: 5/1/2014 Chr Monit: 90% NonComp: 7Q10: PF: IWC: Freq: Q
SOC JOC:
J F M A M J J A S 0 N
2017 - Pass - - Pass - - Pass - - Pass
2018 - Pass - - Pass - - Pass - - Pass
2019 - Pass - - Pass - - Pass - - Fail
2020 - Pass - - Pass - - Pass - - Pass
2021 - Pass - - - - - -
Denton WWTP NC0026689/001 County: Davidson Region: WSRO Basin: YADO8 Feb May Aug Nov
Ceri7dPF Begin: 8/1/2016 chr lim: 90% NonComp: Single 7Q10: 0.0 PF: 0.8 IWC: 100 Freq: Q
SOC JOC:
J F M A M J J A S 0 N
2017 - Pass >100(P) - - Pass - - Pass - - Pass
2018 - Pass - - Pass >100(P) - - Pass - - Pass
2019 - Pass - - Pass - - >100(P) Pass - - Pass
2020 - Pass - - Pass - - Pass - - Pass
2021 - Pass - - - - - -
Diamond Head Subdivision WWTP NC0074772/001 County: Iredell Region: MRO Basin: CTB01 Jan Apr Jul Oct
Ceri7dPF Begin: 8/1/2017 Chr Cer PF Lim: 90% NonComp: 7Q10: PF: IWC: Freq: Q
SOC JOC:
J F M A M J J A S 0 N D
2018 Pass - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - Pass -
2021 Pass - - - - - - -
Dixon WTP - Onslow Water & Sewer Aut NC0083551/001 County: Onslow Region: WIRO Basin: WOK02 Jan Apr Jul Oct
Mysd24PF Begin: 1/1/2018 Ac P/F Monit: 90% M NonComp: 7Q10: PF: IWC: Freq: Q
SOC JOC:
J F M A M J J A S 0 N D
2017 Fail - - Fail - - Fail - - Fail -
2018 Fail - - Pass - - Pass - - Pass -
2019 Pass - - Pass - - Pass - - Pass -
2020 Pass - - Pass - - Pass - - Pass -
2021 Pass - - - - - - -
Legend: P= Fathead minnow (Pimphales promelas), H=No Flow (facility is active), s = Split test between Certified Labs
Page 33 of 119

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 1 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
08-2016 001 Effluent Chlorine, Total Residual 08/01/16 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/02/16 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/03/16 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/08/16 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/09/16 3 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/11/16 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/18/16 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/22/16 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/23/16 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/24/16 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/29/16 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
08-2016 001 Effluent Chlorine, Total Residual 08/31/16 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/06/16 3 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/07/16 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/08/16 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/12/16 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 2 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
09-2016 001 Effluent Chlorine, Total Residual 09/13/16 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/14/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/20/16 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/21/16 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/22/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/26/16 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/27/16 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
09-2016 001 Effluent Chlorine, Total Residual 09/28/16 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/03/16 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/05/16 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/10/16 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/11/16 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/12/16 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/17/16 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/19/16 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/25/16 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 3 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
10-2016 001 Effluent Chlorine, Total Residual 10/26/16 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
10-2016 001 Effluent Chlorine, Total Residual 10/31/16 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/01/16 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/02/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/07/16 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/08/16 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/14/16 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/15/16 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/17/16 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/21/16 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/22/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/28/16 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
11-2016 001 Effluent Chlorine, Total Residual 11/30/16 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
12-2016 001 Effluent Chlorine, Total Residual 12/07/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
12-2016 001 Effluent Chlorine, Total Residual 12/12/16 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
12-2016 001 Effluent Chlorine, Total Residual 12/13/16 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 4 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
12-2016 001 Effluent Chlorine, Total Residual 12/14/16 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
12-2016 001 Effluent Chlorine, Total Residual 12/19/16 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
01-2017 001 Effluent Chlorine, Total Residual 01/10/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
01-2017 001 Effluent Chlorine, Total Residual 01/19/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
01-2017 001 Effluent Chlorine, Total Residual 01/23/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
01-2017 001 Effluent Chlorine, Total Residual 01/26/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/13/17 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/16/17 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/20/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/21/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/22/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
02-2017 001 Effluent Chlorine, Total Residual 02/27/17 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
03-2017 001 Effluent Chlorine, Total Residual 03/20/17 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
04-2017 001 Effluent Chlorine, Total Residual 04/10/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
04-2017 001 Effluent Chlorine, Total Residual 04/21/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
04-2017 001 Effluent Chlorine, Total Residual 04/27/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 5 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
05-2017 001 Effluent Chlorine, Total Residual 05/04/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
05-2017 001 Effluent Chlorine, Total Residual 05/17/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
05-2017 001 Effluent Chlorine, Total Residual 05/22/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
05-2017 001 Effluent Chlorine, Total Residual 05/23/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
05-2017 001 Effluent Chlorine, Total Residual 05/24/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
06-2017 001 Effluent Chlorine, Total Residual 06/06/17 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
06-2017 001 Effluent Chlorine, Total Residual 06/12/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
06-2017 001 Effluent Chlorine, Total Residual 06/19/17 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
06-2017 001 Effluent Chlorine, Total Residual 06/26/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
06-2017 001 Effluent Chlorine, Total Residual 06/28/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/03/17 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/07/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/11/17 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/12/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/13/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/18/17 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 6 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
07-2017 001 Effluent Chlorine, Total Residual 07/19/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/20/17 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/25/17 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/26/17 3 X week ug/I 17 39 129.4 Daily Maximum No Action, BPJ
Exceeded
07-2017 001 Effluent Chlorine, Total Residual 07/31/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/01/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/02/17 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/07/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/08/17 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/09/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/15/17 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/18/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/22/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/23/17 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/28/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
08-2017 001 Effluent Chlorine, Total Residual 08/29/17 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 7 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
08-2017 001 Effluent Chlorine, Total Residual 08/30/17 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/05/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/06/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/07/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/13/17 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/18/17 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/19/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/25/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
09-2017 001 Effluent Chlorine, Total Residual 09/27/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/02/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/04/17 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/09/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/11/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/17/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2017 001 Effluent Chlorine, Total Residual 10/19/17 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
11-2017 001 Effluent Chlorine, Total Residual 11/06/17 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 8 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
11-2017 001 Effluent Chlorine, Total Residual 11/07/17 3 X week ug/I 17 39 129.4 Daily Maximum No Action, BPJ
Exceeded
11-2017 001 Effluent Chlorine, Total Residual 11/08/17 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
11-2017 001 Effluent Chlorine, Total Residual 11/27/17 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
11-2017 001 Effluent Chlorine, Total Residual 11/28/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
11-2017 001 Effluent Chlorine, Total Residual 11/29/17 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/04/17 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/05/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/06/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/25/17 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/27/17 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
12-2017 001 Effluent Chlorine, Total Residual 12/28/17 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/02/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/03/18 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/09/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/17/18 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/19/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 9 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
01-2018 001 Effluent Chlorine, Total Residual 01/25/18 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/27/18 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
01-2018 001 Effluent Chlorine, Total Residual 01/31/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
02-2018 001 Effluent Chlorine, Total Residual 02/13/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
02-2018 001 Effluent Chlorine, Total Residual 02/20/18 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
02-2018 001 Effluent Chlorine, Total Residual 02/21/18 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
02-2018 001 Effluent Chlorine, Total Residual 02/28/18 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/08/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/13/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/14/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/23/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/28/18 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/29/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
03-2018 001 Effluent Chlorine, Total Residual 03/30/18 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/03/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/04/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 10 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
04-2018 001 Effluent Chlorine, Total Residual 04/10/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/11/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/17/18 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/19/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
04-2018 001 Effluent Chlorine, Total Residual 04/20/18 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/02/18 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/04/18 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/09/18 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/14/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/15/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/23/18 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
05-2018 001 Effluent Chlorine, Total Residual 05/30/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/05/18 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/06/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/18/18 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/19/18 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 11 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
06-2018 001 Effluent Chlorine, Total Residual 06/20/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/27/18 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
06-2018 001 Effluent Chlorine, Total Residual 06/28/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/02/18 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/04/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/09/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/11/18 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/17/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/18/18 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/23/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/24/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/25/18 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
07-2018 001 Effluent Chlorine, Total Residual 07/30/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/01/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/07/18 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/08/18 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 12 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
08-2018 001 Effluent Chlorine, Total Residual 08/20/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/22/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/27/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2018 001 Effluent Chlorine, Total Residual 08/30/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/03/18 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/04/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/05/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/12/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/18/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/19/18 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/24/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
09-2018 001 Effluent Chlorine, Total Residual 09/25/18 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/08/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/11/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/12/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/18/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 13 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
10-2018 001 Effluent Chlorine, Total Residual 10/19/18 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/23/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/29/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2018 001 Effluent Chlorine, Total Residual 10/31/18 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
11-2018 001 Effluent Chlorine, Total Residual 11/01/18 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
11-2018 001 Effluent Chlorine, Total Residual 11/07/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
11-2018 001 Effluent Chlorine, Total Residual 11/13/18 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/03/18 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/06/18 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/12/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/13/18 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/18/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/19/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/25/18 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
12-2018 001 Effluent Chlorine, Total Residual 12/28/18 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/08/19 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 14 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
01-2019 001 Effluent Chlorine, Total Residual 01/09/19 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/15/19 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/16/19 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/24/19 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/25/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
01-2019 001 Effluent Chlorine, Total Residual 01/28/19 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
02-2019 001 Effluent Chlorine, Total Residual 02/05/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
02-2019 001 Effluent Chlorine, Total Residual 02/19/19 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
02-2019 001 Effluent Chlorine, Total Residual 02/22/19 3 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ
Exceeded
02-2019 001 Effluent Chlorine, Total Residual 02/27/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
02-2019 001 Effluent Chlorine, Total Residual 02/28/19 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/05/19 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/06/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/07/19 3 X week ug/I 17 40 135.3 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/12/19 3 X week ug/I 17 40 135.3 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/13/19 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 15 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
03-2019 001 Effluent Chlorine, Total Residual 03/14/19 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/20/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/25/19 3 X week ug/I 17 43 152.9 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/26/19 3 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
03-2019 001 Effluent Chlorine, Total Residual 03/27/19 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/02/19 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/05/19 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/08/19 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/15/19 3 X week ug/I 17 46 170.6 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/16/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/22/19 3 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ
Exceeded
04-2019 001 Effluent Chlorine, Total Residual 04/24/19 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/01/19 3 X week ug/I 17 48 182.4 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/06/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/07/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/09/19 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 16 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
05-2019 001 Effluent Chlorine, Total Residual 05/13/19 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/14/19 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/15/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/20/19 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/21/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/23/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/27/19 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/28/19 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
05-2019 001 Effluent Chlorine, Total Residual 05/31/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/05/19 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/06/19 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/07/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/11/19 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/12/19 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/13/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/17/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 17 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
06-2019 001 Effluent Chlorine, Total Residual 06/18/19 3 X week ug/I 17 40 135.3 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/26/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/27/19 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
06-2019 001 Effluent Chlorine, Total Residual 06/28/19 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/03/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/08/19 3 X week ug/I 17 41 141.2 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/09/19 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/10/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/16/19 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/17/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/22/19 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/25/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/29/19 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
07-2019 001 Effluent Chlorine, Total Residual 07/31/19 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/05/19 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/06/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 18 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
08-2019 001 Effluent Chlorine, Total Residual 08/07/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/12/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/14/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/15/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/20/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/22/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/26/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/27/19 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
08-2019 001 Effluent Chlorine, Total Residual 08/30/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/03/19 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/04/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/09/19 3 X week ug/I 17 40 135.3 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/11/19 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/12/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/17/19 3 X week ug/I 17 37 117.6 Daily Maximum No Action, BPJ
Exceeded
09-2019 001 Effluent Chlorine, Total Residual 09/19/19 3 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 19 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
09-2019 001 Effluent Chlorine, Total Residual 09/25/19 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/01/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/03/19 3 X week ug/I 17 42 147.1 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/04/19 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/07/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/08/19 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/15/19 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/16/19 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/22/19 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/23/19 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/29/19 3 X week ug/I 17 44 158.8 Daily Maximum No Action, BPJ
Exceeded
10-2019 001 Effluent Chlorine, Total Residual 10/31/19 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
11-2019 001 Effluent Chlorine, Total Residual 11/07/19 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
11-2019 001 Effluent Chlorine, Total Residual 11/12/19 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
11-2019 001 Effluent Chlorine, Total Residual 11/14/19 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
11-2019 001 Effluent Chlorine, Total Residual 11/18/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 20 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
11-2019 001 Effluent Chlorine, Total Residual 11/19/19 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
11-2019 001 Effluent Chlorine, Total Residual 11/26/19 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
12-2019 001 Effluent Chlorine, Total Residual 12/01/19 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
12-2019 001 Effluent Chlorine, Total Residual 12/23/19 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
12-2019 001 Effluent Chlorine, Total Residual 12/25/19 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
12-2019 001 Effluent Chlorine, Total Residual 12/26/19 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/02/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/06/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/07/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/13/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/14/20 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/16/20 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/21/20 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
01-2020 001 Effluent Chlorine, Total Residual 01/22/20 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/03/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/05/20 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 21 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category:
Facility Name: % Param NamE % County: % Subbasin: % Violation Action:
Major Minor: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
02-2020 001 Effluent Chlorine, Total Residual 02/19/20 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/21/20 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/24/20 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/25/20 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
02-2020 001 Effluent Chlorine, Total Residual 02/26/20 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/02/20 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/05/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/09/20 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/11/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/12/20 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/17/20 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
03-2020 001 Effluent Chlorine, Total Residual 03/18/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/01/20 3 X week ug/I 17 35 105.9 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/02/20 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/06/20 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/14/20 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 22 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
04-2020 001 Effluent Chlorine, Total Residual 04/15/20 3 X week ug/I 17 39 129.4 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/17/20 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/21/20 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/22/20 3 X week ug/I 17 43 152.9 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/24/20 3 X week ug/I 17 43 152.9 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/29/20 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
04-2020 001 Effluent Chlorine, Total Residual 04/30/20 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/01/20 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/06/20 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/08/20 3 X week ug/I 17 32 88.2 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/14/20 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/15/20 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/20/20 3 X week ug/I 17 49 188.2 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/21/20 3 X week ug/I 17 39 129.4 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/27/20 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
05-2020 001 Effluent Chlorine, Total Residual 05/28/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 23 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
06-2020 001 Effluent Chlorine, Total Residual 06/09/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine, Total Residual 06/15/20 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine, Total Residual 06/17/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine, Total Residual 06/22/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
06-2020 001 Effluent Chlorine, Total Residual 06/24/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/09/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/10/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/14/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/21/20 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/23/20 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/24/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
07-2020 001 Effluent Chlorine, Total Residual 07/28/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/07/20 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/11/20 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/13/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/18/20 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 24 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
08-2020 001 Effluent Chlorine, Total Residual 08/19/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/20/20 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
08-2020 001 Effluent Chlorine, Total Residual 08/27/20 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
09-2020 001 Effluent Chlorine, Total Residual 09/02/20 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded
09-2020 001 Effluent Chlorine, Total Residual 09/11/20 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
09-2020 001 Effluent Chlorine, Total Residual 09/14/20 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
09-2020 001 Effluent Chlorine, Total Residual 09/15/20 3 X week ug/I 17 36 111.8 Daily Maximum No Action, BPJ
Exceeded
09-2020 001 Effluent Chlorine, Total Residual 09/23/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine, Total Residual 10/07/20 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine, Total Residual 10/09/20 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine, Total Residual 10/15/20 3 X week ug/I 17 48 182.4 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine, Total Residual 10/21/20 3 X week ug/I 17 47 176.5 Daily Maximum No Action, BPJ
Exceeded
10-2020 001 Effluent Chlorine, Total Residual 10/27/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/03/20 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/04/20 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/05/20 3 X week ug/I 17 30 76.5 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 25 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
11 -2020 001 Effluent Chlorine, Total Residual 11/10/20 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/11/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/13/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/17/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/18/20 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/19/20 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
11-2020 001 Effluent Chlorine, Total Residual 11/24/20 3 X week ug/I 17 25 47.1 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine, Total Residual 12/01/20 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine, Total Residual 12/02/20 3 X week ug/I 17 21 23.5 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine, Total Residual 12/03/20 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine, Total Residual 12/08/20 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
12-2020 001 Effluent Chlorine, Total Residual 12/18/20 3 X week ug/I 17 27 58.8 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine, Total Residual 01/12/21 3 X week ug/I 17 34 100 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine, Total Residual 01/13/21 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine, Total Residual 01/15/21 3 X week ug/I 17 23 35.3 Daily Maximum No Action, BPJ
Exceeded
01-2021 001 Effluent Chlorine, Total Residual 01/21/21 3 X week ug/I 17 22 29.4 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 26 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
02-2021 001 Effluent Chlorine, Total Residual 02/02/21 3 X week ug/I 17 29 70.6 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/03/21 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/05/21 3 X week ug/I 17 28 64.7 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/09/21 3 X week ug/I 17 18 5.9 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/12/21 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/16/21 3 X week ug/I 17 31 82.4 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/17/21 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/18/21 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/23/21 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
02-2021 001 Effluent Chlorine, Total Residual 02/24/21 3 X week ug/I 17 26 52.9 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/02/21 3 X week ug/I 17 38 123.5 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/04/21 3 X week ug/I 17 24 41.2 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/09/21 3 X week ug/I 17 40 135.3 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/10/21 3 X week ug/I 17 43 152.9 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/16/21 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/18/21 3 X week ug/I 17 33 94.1 Daily Maximum No Action, BPJ
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 27 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Limit Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
03-2021 001 Effluent Chlorine, Total Residual 03/23/21 3 X week ug/I 17 20 17.6 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/26/21 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
03-2021 001 Effluent Chlorine, Total Residual 03/31/21 3 X week ug/I 17 19 11.8 Daily Maximum No Action, BPJ
Exceeded
01 -2018 001 Effluent Coliform, Fecal MF, MFC 01/13/18 3 X week #/100m1 400 600 50.0 Weekly Geometric Mean Proceed to NOV
Broth, 44.5 C Exceeded
08-2016 001 Effluent Dichlorobromomethane 08/31/16 Monthly ug/1 1.3 3.61 177.7 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
09-2016 001 Effluent Dichlorobromomethane 09/30/16 Monthly ug/1 1.3 6.92 432.3 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
10-2016 001 Effluent Dichlorobromomethane 10/31/16 Monthly ug/1 1.3 5.32 309.2 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
11-2016 001 Effluent Dichlorobromomethane 11/30/16 Monthly ug/1 1.3 5.04 287.7 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
12-2016 001 Effluent Dichlorobromomethane 12/31/16 Monthly ug/1 1.3 2.5 92.3 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
02-2017 001 Effluent Dichlorobromomethane 02/28/17 Monthly ug/1 1.3 1.9 46.2 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
04-2017 001 Effluent Dichlorobromomethane 04/30/17 Monthly ug/1 1.3 1.81 39.2 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
05-2017 001 Effluent Dichlorobromomethane 05/31/17 Monthly ug/1 1.3 1.99 53.1 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
07-2017 001 Effluent Dichlorobromomethane 07/31/17 Monthly ug/1 1.3 4.05 211.5 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
08-2017 001 Effluent Dichlorobromomethane 08/31/17 Monthly ug/1 1.3 2.94 126.2 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
09-2017 001 Effluent Dichlorobromomethane 09/30/17 Monthly ug/1 1.3 1.64 26.2 Monthly Average No Action, BPJ
(bromodichloromethane) Exceeded
10-2017 001 Effluent Dichlorobromomethane 10/31/17 Monthly ug/1 1.3 3.35 157.7 Monthly Average Proceed to NOV
(bromodichloromethane) Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21
Page 28 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region:
Facility Name: % Param NamE % County:
Major Minor:
Violation Category:%
Subbasin: %
Program Category: %
Violation Action: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson
REGION: Winston-Salem
Limit Violation
MONITORING OUTFACE
REPORT
LOCATION
PARAMETER
VIOLATION
UNIT OF
DATE FREQUENCY MEASURE
LIMIT
CALCULATED
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
11-2017 001
12-2017 001
05-2018 001
06-2018 001
07-2018 001
08-2018 001
09-2018 001
10-2018 001
02-2019 001
04-2019 001
05-2019 001
08-2019 001
09-2019 001
10-2019 001
12-2019 001
03-2020 001
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
Dichlorobromomethane
(bromodichloromethane)
11/30/17 Monthly
12/31/17 Monthly
05/31/18 Monthly
06/30/18 Monthly
07/31/18 Monthly
08/31/18 Monthly
09/30/18 Monthly
10/31/18 Monthly
02/28/19 Monthly
04/30/19 Monthly
05/31/19 Monthly
08/31/19 Monthly
09/30/19 Monthly
10/31/19 Monthly
12/31/19 Monthly
03/31/20 Monthly
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
ug/I
1.3 2.24 72.3 Monthly Average
Exceeded
1.3 1.46 12.3 Monthly Average
Exceeded
1.3 2.21 70 Monthly Average
Exceeded
1.3 2.98 129.2 Monthly Average
Exceeded
1.3 2.89 122.3 Monthly Average
Exceeded
1.3 6.72 416.9 Monthly Average
Exceeded
1.3 3.31 154.6 Monthly Average
Exceeded
1.3 2.17 66.9 Monthly Average
Exceeded
1.3 1.53 17.7 Monthly Average
Exceeded
1.3 1.4 7.7 Monthly Average
Exceeded
1.3
1.3
1.8
2.77
38.5
113.1
Monthly Average
Exceeded
Monthly Average
Exceeded
1.3 1.85 42.3 Monthly Average
Exceeded
1.3 1.66 27.7 Monthly Average
Exceeded
1.3 1.56 20 Monthly Average
Exceeded
1.3 1.55 19.2 Monthly Average
Exceeded
Proceed to NOV
Proceed to NOV
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to NOV
Proceed to NOD
Proceed to NOV
Proceed to NOV
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case
Proceed to
Enforcement Case

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 29 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region:
Facility Name: % Param NamE % County:
Major Minor:
Violation Category:%
Subbasin: %
Program Category: %
Violation Action: %
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson
REGION: Winston-Salem
Limit Violation
MONITORING OUTFALL
REPORT
LOCATION
PARAMETER
VIOLATION
UNIT OF
DATE FREQUENCY MEASURE
LIMIT
CALCULATED
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
07-2020 001
12-2018 001
02-2021 001
Monitoring Violation
MONITORING
REPORT OUTFALL
Effluent
Effluent
Effluent
LOCATION
Dichlorobromomethane
(bromodichloromethane)
Flow, in conduit or thru
treatment plant
Flow, in conduit or thru
treatment plant
PARAMETER
07/31/20 Monthly
12/31/18 Continuous
02/28/21 Continuous
VIOLATION
ug/I
mgd
mgd
UNIT OF
DATE FREQUENCY MEASURE
1.3
0.8
0.8
LIMIT
3.9
0.84
0.83
CALCULATED
VALUE
200
5.6
3.4
Over
Monthly Average
Exceeded
Monthly Average
Exceeded
Monthly Average
Exceeded
VIOLATION TYPE
Proceed to NOV
No Action, BPJ
None
VIOLATION ACTION
12-2018 001
12-2018 001
12-2019 001
08-2018 001
12-2018 001
08-2019 001
10-2019 001
12-2019 001
12-2018 001
12-2019 001
12-2018 001
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Annual Pollutant Scan [126
parameters]
BOD, 5-Day (20 Deg. C) -
Concentration
BOD, 5-Day (20 Deg. C) -
Concentration
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
Coliform, Fecal MF, MFC
Broth, 44.5 C
Nitrogen, Ammonia Total (as
N) - Concentration
Nitrogen, Ammonia Total (as
N) - Concentration
Solids, Total Suspended -
Concentration
12/31/18 Annually yes=1 no=0
12/29/18 3 X week mg/I
12/28/19 3 X week mg/I
08/04/18 3 X week #/100m1
12/29/18 3 X week #/100m1
08/03/19 3 X week #/100m1
10/05/19 3 X week #/100m1
12/28/19 3 X week #/100m1
12/29/18 3 X week mg/1
12/28/19 3 X week mg/1
12/29/18 3 X week mg/1
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
No Action, Facility
Reporting Error
No Action, Facility
Reporting Error
No Action, Facility
Reporting Error
Proceed to
Enforcement Case
No Action, Facility
Reporting Error
Proceed to
Enforcement Case
Proceed to
Enforcement Case
No Action, Facility
Reporting Error
No Action, Facility
Reporting Error
No Action, Facility
Reporting Error
No Action, Facility
Reporting Error

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 04/30/21 Page 30 of 30
Permit: NC0026689 MRs Betweei 8 - 2016 and 4 - 2021 Region: % Violation Category:% Program Category: %
Facility Name: % Param NamE % County: % Subbasin: % Violation Action: %
Major Minor:
PERMIT: NC0026689
FACILITY: Town of Denton - Denton WWTP
COUNTY: Davidson REGION: Winston-Salem
Monitoring Violation
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
VIOLATION TYPE VIOLATION ACTION
12-2019 001
Reporting Violation
Effluent Solids, Total Suspended - 12/28/19 3 X week mg/I
Concentration
MONITORING UNIT OF
OUTFALL LOCATION PARAMETER VIOLATION FREQUENCY
REPORT DATE MEASURE
LIMIT
CALCULATED %
VALUE Over
Frequency Violation
No Action, Facility
Reporting Error
VIOLATION TYPE VIOLATION ACTION
08-2018 10/01/18 Late/Missing DMR None

Permit No. Kjl' C)Ua(0L b' 9
Outfall Q I
Facility NameTOW►) of DF►,,_Tot„ MAITP
Date of sampling
Analytical Laboratory
Annual Monitoring and Pollutant Scan
Month VE e,gUAay
Year 2011
ORC 1 RU`J 1Jv.AK?C14
Phone 33L 85°i qq 0
Parameter
Parameter
Code
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved Oxygen
C0610
Nitrite plus Nitrate Total (as N)
Total Kjeldahl Nitrogen
Oil and Grease
Total Phosphorus
Total Dissolved Solids
Hardness
50060
00300
00630
00625
00556
C0665
70295
00900
Composite
Grab
Grab
Composite
Composite
Grab
Composite
Composite
Composite
Metals (total recoverable), cyanide and total phenols
0.1
Fs oo-D G _1.0
_.PA 553 2 0. 1
EPA351.1 0.2.
8PA 1(.14,4A 5
EPA 200 1 0. 02_,_
5t\2540C
sM 23L10C
AG_
12
c1.5
13.y
1.63
376
910
rn5k
Antimony
01097
Composite
2A
0.025
.t O. 025
0)3/1.
Arsenic
01002
Composite
_1=
f_PA 2eNt,=1
0.616
;< o. 010
rn3 I L
Beryllium
01012
Composite
E pA 2 00.1
0.005
0.006
MIL
Cadmium
01027
Composite
EPAtop.-1
O.O02
<D.002
L
Chromium
01034
Composite
EPA200.1
0.005
<0 . CC.b
M3/1.
Copper
01042
Composite
El'A zap -1
0.002
0.011
1LL
Lead
01051
Composite
gQA200•1
6 Dt0
40.0 (C)
r J L
Mercury (Method 1631 E)
COMER
Composite
F e.A 1103 1
1 .O
5.42.
n5 /L.
Nickel
01067
Composite
EPA zpa1
0.010
<0. 010
, L__
Selenium
01147
Composite
EPA200.'1
0.010
s0 0l0
mgf 1.
Silver
01077
Composite
Ep 2A co.
0 55
<o. WE
n1 3' /L
01059
Composite
. 1owThallium
EPA200
�. 0
<0.020
>rsi L
Zinc
01092
Composite
g_PA2Q0. j
0. D 1 O
0.04
ALL
Cyanide
00720
Grab
EPA5, t_
Total phenolic compounds
32730
Grab
E PA L120. 1 0.610
©. 011
M q 1 L
Volatile organic compounds
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon Tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethyl vinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
34210
34215
Grab
Grab
EPA b2►}
Trans-1,2-dichloroethylene
34030
Grab
32104
32102
34301
34306
85811
34576
32106
32101
34496
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
<50.0 UO3/1,
<10.0 u5LL
s1.O0 ug/L
<1,60 u3JL
1.00 ;�►gJL
1.00 ug/�
< 5,00 1.9/L
<5.CO ug&L
t11.$g
2.00 1
<1.00
32103
34546
Grab
Grab
EPA 350.1
svbaScoC1 Cs
Form - DMR- PPA-1
Page 1

Annual Monitoring and Pollutant Scan
Permit No. NCcD024,b P
Outfall Op 1
Month FE_N-t u,o rcy
Year 201'7
Parameter
1,1-dichloroethylene
Parameter
Code
34501
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
34541
77163
34371
Sample
Type
Grab EPAb24
Grab
Analytical
Method
Quantitation
Level
Grab
Grab
Methyl Bromide
34413
Grab
Sample
Result
<I.00
S 1.00
< 1.00
Units of
Measurement
"4 1.Qp
Methyl Chloride
34418
Grab
<1.00
Methylene Chloride
34423
Grab
< I.00
1,1,2,2-tetrachloroethane
Tetrachloroethylene
81549
34475
Grab
Grab
Toluene
34010
Grab
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl Chloride
34506
Grab
34511
Grab
39180
Grab
Acid -extractable compounds
39175
Grab
< 1.00
< 1.DO
< 1.00
< I. CO
< 1.00
<1.00
P-chloro-m-creso
34452
Grab
c.PA625
< 10
u�/
2-chlorophenol
34586
Grab
<10
2,4-dichlorophenol
34601
Grab
<10
2,4-dimethylphenol
34606
Grab
<10
4,6-dinitro-o-cresol
34657
Grab
< 50
2,4-dinitrophenol
34616
Grab
< 50
2-nitrophenol
34591
Grab
<10
4-nitrophenol
34646
Grab
<50
Pentachlorophenol
39032
Grab
<s0
—
Phenol
34694
Grab
<10
—_v-
2,4,6-trichlorophenol
34621
Grab-
< 10
Base -neutral compounds
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
34205
34200
Grab
Grab
EPA625
CO220
39120
34526
34247
Grab
Grab
Grab
Grab
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
34230
Grab
34521
Grab
34242
Grab
<10
<10
<10
< 50
<10
34278
Grab
Bis (2-chloroethyl) ether
34273
Grab
Bis (2-chloroisopropyl) ether
34283
Grab
Bis (2-ethylhexyl) phthalate .M
39100
Grab
4-bromophenyl phenyl ether
34636
Grab
Butyl benzyl phthalate
34292
Grab
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
34581
34641
34320
Grab
Grab
Grab
<10
<10
<10
<10
<I0
<10
<10
<10
<10
<10
<10
<10
4t0
Form - DMR- PPA- 1
Page 2

Permit No. NC002bbSr1
Oiztfall
Annual Monitoring and Pollutant Scan
Month FP6RUAR"1
Year 2011
Parameter
Parameter
Code
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Di-n-butyl phthalate
39110
Grab
EPA 1,25
<10
ugh
Di-n-octyl phthalate
34596
Grab
4 10
Dibenzo(a,h)anthracene
34556
Grab
<10
1,2-dichlorobenzene
34536
I Grab
<10
1,3-dichlorobenzene
34566
Grab
K 10
1,4-dichlorobenzene
34571
Grab
1O
3,3-dichlorobenzidine
34631
Grab
a50
Diethyl phthalate
34336
Grab
<10
Dimethyl phthalate
34341
Grab
<10
2,4-dinitrotoluene
34611
Grab
<10
2,6-dinitrotoluene
C0626
Grab
<10
1,2-diphenylhydrazine
34346
Grab
<10
Fluoranthene
C0376
Grab
<10
Fluorene
34381
Grab
<10
Hexachlorobenzene
C0700
Grab
<10
Hexachlorobutadiene
39702
Grab
I
410
Hexachlorocyclo-pentadiene
34386
Grab
450
Hexachloroethane
34396
Grab
<10
Indeno(1,2,3-cd)pyrene
34403
Grab
410
Isophorone
34408
Grab
<10
Naphthalene
34696
Grab
<10
Nitrobenzene
34447
Grab
<10
N-nitrosodi-n-propylamine
34428
Grab
410
N-nitrosodimethylamine
34438
Grab
< 10
N-nitrosodiphenylamine
34433
Grab
<10
Phenanthrene
34461
Grab
<ID
Pyrene
34469
Grab
<10
1,2,4,-trichlorobenzene
34551
Grab
_____v—
10
— _.
"I 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 managed 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."
Autrorized Representative
.g)tr'fre-2>
3/13//7
Date
Form - DMR- PPA-1
Page 3

- Permit No. Nenng(pom
Outfall (X) i
Annual Monitoring and Pollutant Scan
Month M M
Year 2013"
Facility Name Town of Denton WWTP
)ate of sampling May 7, 2018
Analytical Laboratory Meritech, Inc.
ORC Troy B. Branch
Phone [phone]
Parameter
Parameter
Code
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Ammonia (as N)
C0610
Composite
EPA 350.1
0.1
0.1
mg/L
Chlorine (total residual, TRC)
50060
Grab
SM 4500'C1 G
10
12
ug/L
Dissolved Oxygen
00300
Grab
SM 4500-0 G
2
8.7
mg/L
Nitrite plus Nitrate Total (as N)
00630
Composite
EPA 353.2
0.1
18.1
mg/L
Total Kjeldahl Nitrogen
00625
Composite
EPA 351.1
0.2
1.69
mg/L
Oil and Grease
00556
Grab
EPA 1664B
5
<5
mg/L
Total Phosphorus
Total Dissolved Solids
Hardness
C0665
Composite
70295
Composite
EPA 200.7
SM 2540C
0.02
10
00900
Composite
SM 2340C
1
1.75
mg/L
557
48
mg/L
mg/L
Metals (total recoverable), cyanide and total phenols
Antimony
01097
Composite
EPA 200.7
0.025
<25
ug/L
Arsenic
01002
Composite
EPA 200.7
0.01
<10
ug/L
Beryllium
01012
Composite
EPA 200.7
0.005
<5
ug/L
Cadmium
01027
Composite
EPA 200.7
0.002
<2
ug/L
Chromium
01034
Composite
EPA 200.7
0.005
<5
ug/L
Copper
01042
Composite
EPA 200.7
0.002
15
ug/L
.ead
01051
Composite
EPA 200.7
0.01
<10
ug/L
Mercury (Method 1631E)
COMER
Composite
EPA 1631 E
1
15.6
ug/L
Nickel
01067
Composite
EPA 200.7
0.01
<10
ug/L
Selenium
01147
Composite
EPA 200.7
0.01
<10
ug/L
Silver
01077
Composite
EPA 200.7
0.005
<5
ug/L
Thallium
01059
Composite
EPA 200.7
0.02
<20
ug/L
Zinc
01092
Composite
EPA 200.7
0.01
53
ug/L
Cyanide
00720
Grab
EPA 335.4
0.005
<0.005
mg/L
Total phenolic compounds
32730
Grab
EPA 420.1
0.01
<0.010
mg/L
Volatile organic compounds
Acrolein
Acrylonitrile
Benzene
34210
Grab
EPA 624.1
34215
Grab
EPA 624.1
34030
Grab
EPA 624.1
Bromoform
32104
Grab
EPA 624.1
Carbon Tetrachloride
32102
Grab
EPA 624.1
Chlorobenzene
Chlorodibromomethane
34301
34306
Grab
Grab
EPA 624.1
EPA 624.1
50
10
1
1
1
1
1
<50.0
<10
ug/ L
ug/L
<1.00
ug/ L
<1.00
ug/ L
<1.00
ug/L
<1.00
<1.00
ug/ L
ug/ L
Chloroethane
85811
Grab
EPA 624.1
5
<5.00
ug/ L
2-chloroethyl vinyl ether
34576
Grab
EPA 624.1
5
<5.00
ug/ L
Chloroform
32106
Dichlorobromomethane
32101
Grab
Grab
EPA 624.1
5
EPA 624.1
1
.9.39 ..
2.68
ug/ L
ug/ L
,1-dichloroethane
34496
Grab
EPA 624.1
1
<1.00
ug/L
11,2-dichloroethane
Trans-1,2-dichloroethylene
32103
34546
Grab
Grab
EPA 624.1
EPA 624.1
1
1
<1.00
<1.00
ug/L
ug/ L
Form - DMR- PPA- 1
Page 1

Permit No. N)CCb,2476Vl
Outfall COI
Annual Monitoring and Pollutant Scan
Month In A 1
Year 20 15
'Parameter
,1-dichloroethylene
1,2-dichloropropane
Parameter
Code
34501
Sample
Type
Grab
34541
1,3-dichloropropylene
77163
Grab
Grab
Analytical
Method
EPA 624.1
EPA 624.1
EPA 624.1
Quantitation
Level
1
1
Sample
Result
<1.00
Ethylbenzene
34371
Grab
EPA 624.1
1
1
<1.00
<1.00
<1.00
Units of
Measurement
ug/ I,
ug/L
ug/L
ug/ L
Methyl Bromide
34413
Grab
EPA 624.1
5
<5.00
ug/L
Methyl Chloride
34418
Grab
EPA 624.1
5
<5.00
ug/ L
Methylene Chloride
34423
Grab
EPA 624.1
5
<5.00
ug/L
1,1,2,2-tetrachloroethane
81549
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
34475
34010
34506
Grab
Grab
Grab
Grab
EPA 624.1
1
<1.00
ug/ L
EPA 624.1
EPA 624.1
EPA 624.1
1
1
1
<1.00
2.18
<1.00
ug/ L
ug/ L
ug/ L
1,1,2-trichloroethane
Trichloroethylene
Vinyl Chloride
34511
Grab
EPA 624.1
1
<1.00
ug/ L
39180
Grab
EPA 624.1
1
39175
Grab
EPA 624.1
5
<1.00
<5.00
ug/L
ug/ L
Acid -extractable compounds
P-chloro-m-creso
34452
Grab
EPA 625.1
10
<10
ug/L
2-chlorophenol
34586
Grab
EPA 625.1
10
<10
ug/L
2,4-dichlorophenol
34601
Grab
EPA 625.1
10
<10
ug/L
2,4-dimethylphenol
34606
Grab
EPA 625.1
10
<10
ug/L
4,6-dinitro-o-cresol
34657
Grab
EPA 625.1
50
<50
ug/L
2,4-dinitrophenol
34616
Grab
EPA 625.1
50
<50
ug/L
-nitrophenol
34591
Grab
EPA 625.1
10
<10
ug/L
4-nitrophenol
34646
Grab
EPA 625.1
50
<50
ug/L
Pentachlorophenol
39032
Grab
EPA 625.1
50
<50
ug/L
Phenol
34694
Grab
EPA 625.1
10
<10
ug/L
2,4,E trichlorophenol
34621
Grab
EPA 625.1
10
<10
ug/L
Base -neutral compounds
Acenaphthene
Acenaphthylene
Anthracene
34205
34200
CO220
Grab
Grab
Grab
EPA 625.1
EPA 625.1
EPA 625.1
10
10
10
<10
<10
<10
ug/ L
ug/ L
ug/ L
Benzidine
39120
Grab
EPA 625.1
50
<50
ug/L
Benzo(a)anthracene
34526
Grab
EPA 625.1
10
<10
ug/ L
Benzo(a)pyrene
34247
Grab
EPA 625.1
10
<10
ug/ L
3,4 benzofluoranthene
34230
Grab
EPA 625.1
10
<10
ug/ L
Benzo(ghi)perylene
34521
Grab
EPA 625.1
10
<10
ug/ L
Benzo(k)fluoranthene
34242
Grab
EPA 625.1
10
<10
ug/ L
Bis (2-chloroethoxy) methane
34278
Grab
EPA 625.1
10
<10
ug/L
Bis (2-chloroethyl) ether
34273
Grab
EPA 625.1
10
<10
ug/ L
Bis (2-chloroisopropyl) ether
34283
Grab
EPA 625.1
10
<10
ug/ L
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
39100
34636
34292
Grab
Grab
Grab
EPA 625.1
EPA 625.1
EPA 625.1
10
10
10
<10
<10
<10
ug/L
ug/ L
ug/ L
chloronaphthalene
34581
Grab
EPA 625.1
10
<10
ug/L
-t-chlorophenyl phenyl ether
Chrysene
34641
Grab
EPA 625.1
10
<10
ug/ L
34320
Grab
EPA 625.1
10
<10
ug/L
Form - DMR- PPA-1
Page 2

Permit No. IJCoO20689
Outfall Ubi
Annual Monitoring and Pollutant Scan
Month rrl A-1
Year '20I S.S
Parameter
Parameter
Code
39110
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
)i-n-butyl phthalate
Grab
EPA 625.1
10
<10
ug/L
Di-n-octyl phthalate
34596
Grab
EPA 625.1
10
<10
ug/L
Dibenzo(a,h)anthracene
34556
Grab
EPA 625.1
10
<10
ug/L
1,2-dichlorobenzene
34536
Grab
EPA 625.1
10
<10
ug/L
1,3-dichlorobenzene
34566
Grab
EPA 625.1
10
<10
ug/L
1,4-dichlorobenzene
34571
Grab
EPA 625.1
10
<10
ug/L
3,3-dichlorobenzidine
34631
Grab
EPA 625.1
50
10
<50
ug/L
Diethyl phthalate
34336
Grab
EPA 625.1
<10
ug/L
Dimethyl phthalate
34341
Grab
EPA 625.1
10
<10
ug/L
2,4-dinitrotoluene
34611
Grab
EPA 625.1
10
<10
ug/L
2,6-dinitrotoluene
CO626
Grab
EPA 625.1
10
<10
ug/L
1,2-diphenylhydrazine
34346
Grab
EPA 625.1
10
<10
ug/L
Fluoranthene
CO376
Grab
EPA 625.1
10
<10
ug/L
Fluorene
34381
Grab
EPA 625.1
10
<10
ug/L
Hexachlorobenzene
CO700
Grab
EPA 625.1
10
<10
ug/L
Hexachlorobutadiene
39702
Grab
EPA 625.1
50
<50
ug/ L
Hexachlorocyclo-pentadiene
34386
Grab
EPA 625.1
10
<10
ug/L
Hexachloroethane
34396
Grab
EPA 625.1
10
<10
ug/L
Indeno(1,2,3-cd)pyrene
34403
Grab
EPA 625.1
10
<10
ug/L
Isophorone
34408
Grab
EPA 625.1
10
<10
ug/L
Naphthalene
34696
Grab
EPA 625.1
10
<10
ug/L
iitrobenzene
34447
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodi-n-propylamine
34428
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodimethylamine
34438
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodiphenylamine
34433
Grab
EPA 625.1
10
<10
ug/L
Phenanthrene
34461
Grab
EPA 625.1
10
<10
ug/L
Pyrene
34469
Grab
EPA 625.1
10
<10
ug/L
1,2,4,-trichlorobenzene
34551
Grab
EPA 625.1
10
<10
ug/L
"I 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 managed the system, or those persons directly responsible for gathering the information, the information
submitted is, to the hest 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."
Auth rized Repr entativ nam
62,h,
Da 7
Form - DMR- PPA-1
Page 3

Permit No. {44COO2 ,(oS 9
Outfall CD m I
Facility Name Denton WWTP
Date of sampling November 18, 2019
Analytical Laboratory Meritech, Inc.
Annual Monitoring and Pollutant Scan
Month 10V EMC3f`.2
Year 2O t Q
ORC Troy B. Branch
Phone [phone]
Parameter
Parameter
Code
Sample
'lope
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Ammonia (as N)
C0610
Composite
EPA 350.1
0.1
<0.1
mg/L
Chlorine (total residual, TRC)
50060
Grab
SM 4500CI-G
10
24
ug/L
Dissolved Oxygen
00300
Grab
SM 4500-0 G
1
9.0
mg/1
Nitrite plus Nitrate Total (as N)
00630
Composite
EPA 353.2
0.1
11.7
mg/L
Total Kjeldahl Nitrogen
00625
Composite
EPA 351.1
0.2
0.42
mg/L
Oil and Grease
00556
Grab
EPA 1664B
5
<5
mg/L
Total Phosphorus
C0665
Composite
EPA 200.7
0.02
0.875
mg/L
Total Dissolved Solids
70295
Composite
SM 2540C
10
518
mg/L
Hardness
00900
Composite
SM 2340C
1
37.6
mg/L
Metals (total recoverable), cyanide
and total phenols
Antimony
01097
Composite
EPA 200.7
0.025
<0.025
mg/L
Arsenic
01002
Composite
EPA 200.7
0.01
<0.010
mg/L
Beryllium
01012
Composite
EPA 200.7
0.005
<0.005
mg/ L
Cadmium
01027
Composite
EPA 200.7
0.002
<0.002
mg/ L
Chromium
01034
Composite
EPA 200.7
0.005
<0.005
mg/L
Copper
01042
Composite
EPA 200.7
0.002
0.011
mg/ L
Lead
01051
Composite
EPA 200.7
0.01
<0.010
mg/ L
Mercury (Method 1631E)
COMER
Composite
EPA 1631
1
1.07
ng/L
Nickel
01067
Composite
EPA 200.7
0.01
<0.010
mg/L
Selenium
01147
Composite
EPA 200.7
0.01
<0.010
mg/ L
Silver
01077
Composite
EPA 200.7
0.005
<0.005
mg/L
Thallium
01059
Composite
EPA 200.7
0.005
<0.005
mg/ L
Zinc
01092
Composite
EPA 200.7
0.01
0.03
mg/ L
Cyanide
00720
Grab
EPA 335.4
0.005
<0.005
mg/L
Total phenolic compounds
32730
Grab
EPA 420.1
0.01
0.011
mg/L
Volatile organic compounds
Acrolein
34210
Grab
EPA 624.1
50
<50.0
ug/L
Acrylonitrile
34215
Grab
EPA 624.1
10
<10.0
ug/L
Benzene
34030
Grab
EPA 624.1
1
<1.00
ug/L
Bromoform
32104
Grab
EPA 624.1
1
<1.00
ug/ L
Carbon Tetrachloride
32102
Grab
EPA 624.1
1
<1.00
ug/ L
Chlorobenzene
34301
Grab
EPA 624.1
1
<1.00
ug/L
Chlorodibromomethane
34306
Grab
EPA 624.1
1
<1.00
ug/L
Chloroethane
85811
Grab
EPA 624.1
5
<5.00
ug/L
2-chloroethyl vinyl ether
34576
Grab
EPA 624.1
5
<5.00
ug/L
Chloroform
32106
Grab
EPA 624.1
1
15.1
ug/L
Dichlorobromomethane
32101
Grab
EPA 624.1
1
2.95
ug/L
1,1-dichloroethane
34496
Grab
EPA 624.1
1
<1.00
ug/L
1,2-dichloroethane
32103
Grab
EPA 624.1
1
<1.00
ug/L
Trans-1,2-dichloroethylene
34546
Grab
EPA 624.1
1
<1.00
ug/L
Form - DMR- PPA-1
Page 1

Annual Monitoring and Pollutant Scan
Permit No.
Outfall
Month
Year
Parameter
Parameter
Code
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
1,1-dichloroethylene
34501
Grab
EPA 624.1
1
<1.00
ug/L
1,2-dichloropropane
34541
Grab
EPA 624.1
1
<1.00
ug/L
1,3-dichloropropylene
77163
Grab
EPA 624.1
1
<1.00
ug/L
Ethylbenzene
34371
Grab
EPA 624.1
1
<1.00
ug/L
Methyl Bromide
34413
Grab
EPA 624.1
5
<5.00
ug/L
Methyl Chloride
34418
Grab
EPA 624.1
5
<5.00
ug/L
Methylene Chloride
34423
Grab
EPA 624.1
1
<1.00
ug/L
1,1,2,2-tetrachloroethane
81549
Grab
EPA 624.1
1
<1.00
ug/ L
Tetrachloroethylene
34475
Grab
EPA 624.1
1
<1.00
ug/L
Toluene
34010
Grab
EPA 624.1
1
<1.00
ug/L
1,1,1-trichloroethane
34506
Grab
EPA 624.1
1
<1.00
ug/L
1,1,2-trichloroethane
34511
Grab
EPA 624.1
1
<1.00
ug/L
Trichloroethylene
39180
Grab
EPA 624.1
1
<1.00
ug/L
Vinyl Chloride
39175
Grab
EPA 624.1
5
<5.00
ug/L
Acid -extractable compounds
P-chloro-m-creso
34452
Grab
EPA 625.1
10
<10
ug/L
2-chlorophenol
34586
Grab
EPA 625.1
10
<10
ug/L
2,4-dichlorophenol
34601
Grab
EPA 625.1
10
<10
ug/L
2,4-dimethylphenol
34606
Grab
EPA 625.1
50
<50
ug/L
4,6-dinitro-o-cresol
34657
Grab
EPA 625.1
50
<50
ug/L
2,4-dinitrophenol
34616
Grab
EPA 625.1
50
<50
ug/L
2-nitrophenol
34591
Grab
EPA 625.1
10
<10
ug/L
4-nitrophenol
34646
Grab
EPA 625.1
50
<50
ug/L
Pentachlorophenol
39032
Grab
EPA 625.1
50
<50
ug/L
Phenol
34694
Grab
EPA 625.1
10
<10
ug/L
2,4,6-trichlorophenol
34621
Grab
EPA 625.1
10
<10
ug/L
Base -neutral compounds
Acenaphthene
34205
Grab
EPA 625.1
10
<10
ug/L
Acenaphthylene
34200
Grab
EPA 625.1
10
<10
ug/L
Anthracene
CO220
Grab
EPA 625.1
10
<10
ug/L
Benzidine
39120
Grab
EPA 625.1
50
<50
ug/L
Benzo(a)anthracene
34526
Grab
EPA 625.1
10
<10
ug/L
Benzo(a)pyrene
34247
Grab
EPA 625.1
10
<10
ug/L
3,4 benzofluoranthene
34230
Grab
EPA 625.1
10
<10
ug/L
Benzo(ghi)perylene
34521
Grab
EPA 625.1
10
<10
ug/L
Benzo(k)fluoranthene
34242
Grab
EPA 625.1
10
<10
ug/L
Bis (2-chloroethoxy) methane
34278
Grab
EPA 625.1
10
<10
ug/L
Bis (2-chloroethyl) ether
34273
Grab
EPA 625.1
10
<10
ug/L
Bis (2-chloroisopropyl) ether
34283
Grab
EPA 625.1
10
<10
ug/L
Bis (2-ethylhexyl) phthalate
39100
Grab
EPA 625.1
10
<10
ug/L
4-bromophenyl phenyl ether
34636
Grab
EPA 625.1
10
<10
ug/L
Butyl benzyl phthalate
34292
Grab
EPA 625.1
10
<10
ug/L
2-chloronaphthalene
34581
Grab
EPA 625.1
10
<10
ug/L
4-chlorophenyl phenyl ether
34641
Grab
EPA 625.1
10
<10
ug/L
Chrysene
34320
Grab
EPA 625.1
10
<10
ug/L
Form - DMR- PPA-1
Page 2

Annual Monitoring and Pollutant Scan
Permit No.
Outfall
Month
Year
'Parameter
Parameter
Code
Sample
Type
Analytical
Method
Quantitation
Level
Sample
Result
Units of
Measurement
Di-n-butyl phthalate
39110
Grab
EPA 625.1
10
<10
ug/ L
Di-n-octyl phthalate
34596
Grab
EPA 625.1
10
<10
ug/L
Dibenzo(a,h)anthracene
34556
Grab
EPA 625.1
10
<10
ug/L
1,2-dichlorobenzene
34536
Grab
EPA 625.1
10
<10
ug/L
1,3-dichlorobenzene
34566
Grab
EPA 625.1
10
<10
ug/L
1,4-dichlorobenzene
34571
Grab
EPA 625.1
10
<10
ug/L
3,3-dichlorobenzidine
34631
Grab
EPA 625.1
50
<50
ug/L
Diethyl phthalate
34336
Grab
EPA 625.1
10
<10
ug/ L
Dimethyl phthalate
34341
Grab
EPA 625.1
10
<10
ug/L
2,4-dinitrotoluene
34611
Grab
EPA 625.1
10
<10
ug/L
2,6-dinitrotoluene
C0626
Grab
EPA 625.1
10
<10
ug/L
1,2-diphenylhydrazine
34346
Grab
EPA 625.1
10
<10
ug/L
Fluoranthene
C0376
Grab
EPA 625.1
10
<10
ug/L
Fluorene
34381
Grab
EPA 625.1
10
<10
ug/L
Hexachlorobenzene
C0700
Grab
EPA 625.1
10
<10
ug/L
Hexachlorobutadiene
39702
Grab
EPA 625.1
10
<10
ug/L
Hexachlorocyclo-pentadiene
34386
Grab
EPA 625.1
50
<50
ug/L
Hexachloroethane
34396
Grab
EPA 625.1
10
<10
ug/L
Indeno(1,2,3-cd)pyrene
34403
Grab
EPA 625.1
10
<10
ug/L
Isophorone
34408
Grab
EPA 625.1
10
<10
ug/L
Naphthalene
34696
Grab
EPA 625.1
10
<10
ug/L
Nitrobenzene
34447
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodi-n-propylamine
34428
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodirnethylamine
34438
Grab
EPA 625.1
10
<10
ug/L
N-nitrosodiphenylamine
34433
Grab
EPA 625.1
10
<10
ug/L
Phenanthrene
34461
Grab
EPA 625.1
10
<10
ug/ L
Pyrene
34469
Grab
EPA 625.1
10
<10
ug/L
1,2,4,-trichlorobenzene
34551
Grab
EPA 625.1
10
<10
ug/L
"I 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 managed 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."
rized Representative
Date
Form - DMR- PPA-1
Page 3

The National Map Advanced Viewer
5/4/2021, 10:55:13 AM
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USGS
2021 USGS

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Page 245 of 262
2018 NC Category 5 Assessments "303(d) List" Approved by EPA May 22,2019

AU Name
AU ID
Description
Lower Yadkin
NORTH CAROLINA 2020 DRAFT 303(D) LIST
dkin-Pee Dee River Basin
Classification AU_LengthArea AU_Units
Rich Fork
13314
AU Number
12-119-7b2
8.3
FW Miles
From SR1790 to Abbotts Creek
Fish Community (Nar, AL, FW)
5
Exceeding Criteria
Fair, Poor or Severe Bioclassification
1998
Lick Creek
1616
12-126-(3)
WS-IV
.1
FW Miles
From East Branch Lick Creek to a point 1.0 mile upstream of Davidson County SR 2501
Benthos (Nar, AL, FW)
Fish Community (Nar, AL, FW)
5
5
Exceeding Criteria
Exceeding Criteria
Fair, Poor or Severe Bioclassification
Fair, Poor or Severe Bioclassification
2008
2014
Lick Creek
1617
12-126-(4)
WS-IV;CA
0.7
FW Miles
From a point 1.0 mile upstream of Davidson County SR 2501 to Tuckertown Lake, Yadkin River
Benthos (Nar, AL, FW)
5
Exceeding Criteria
Fair, Poor or Severe Bioclassification
2008
UT to Uwharrie River
13832
13-2-(1.3)ut6
2.8
FW Miles
From Source to Uwharrie
Arsenic (10 µg/I, HH, NC)
5
Exceeding Criteria
Legacy RAMS Assessments
2014
Uwharrie River
2450
13-2-(17.5)
WS-IV,B
9.3
FW Miles
From a point 1.3 miles upstream of the mouth of Barnes Creek to mouth of Dutchmans Creek
pH (6 su, AL, FW)
5
Exceeding Criteria
Exceeding Criteria with Statistical
Confidence
2020
UT to Back Creek
13423
13-2-3-3-(0.3
.1
FW Miles
From source to a Back Creek
Benthos (Nar, AL, FW)
5
Exceeding Criteria
Fair, Poor or Severe Bioclassification
2012
IIIIIIIIII Dee River Basin
IIMIllailliipper Pee DM
PEE DEE RIVER (including Lake Tillery below normal
operating levels)
13906
13-(1)a
WS-IV,B;CA
3,441.2
FW Acres
From mouth of Uwharrie River to a line across the reservoir at Richland Creek and Bunny Creek
PCB Fish Tissue Advisory (Advisory, FC, NC)
5
Exceeding Criteria
DHHS Fish Consumption Advisory
2014
1/29/2021 NC 2020 DRAFT 303d List
Page 152 of 161

NPDES/PT POCs Review Form Version: 2021.00
NPDES PERMIT WRITER (PW) COMPLETES when drafting NPDES permit:
Date of Review
6/21/2021
Diana Yitbarek
Town of Denton WWTP
NC0026689
WSRO
Alexander Lowe and Jim Gonsiewski
Troy Branch
8/5/2020
Yadkin Pee Dee River Basin
WS-IV
Check all that apply
pp y
PW please:
staff in regional office if
be on DM Rs is not really
below if you deem
POC in LTMP/STMP so you
renewal.
office, regional office, and Facility:
office, regional office, and Facility:
effective date and 180 days
form)
in central office and regional
SharePoint PT_Town
Permit)
up)
- Notify Permittee and PT
LTMP/STMP data that should
there.
Notify PT in comment section
necessary to keep a specific
will have data for next permit
- Email PT staff in central
draft permit package.
- Email PT staff in central
final permit package. (Note
after at the bottom of this
Email this form to PT staff
office and add it to the respective
Folder (04. PT_Towns> NCOOXXXXX>NPDES
- PQL review note (coming
Permit Writer
municipal renewal
X
Facility Name
new industries
Permit Number
WWTP expansion
Region
Speculative limits
Regional PT Staff
stream reclass.
Facility PT Staff
outtall relocation
IWS approval date
7Q10 change
Basin
other
Stream Class
other
PT staff central office contact: Kristin Litzenberger
Comments from NPDES pw to PT staff (Central. RO5
Facility):
has one non -categorical SIU, Century Hosiery, authorized to
MGD. NEW effluent limits for copper and Bis(2-ethylhexyl)
NEW monitoring requirement for mercury. Please keep all the
in STMP, add the NEW POCs, and ensure the STMP update
comments in the POC table.
The Facility
discharge 0.08
Phthalate.
current POCs
addresses the
Facility Summary and NPDES regulatory action:
The
0.8
serves
The Town applied for NPDES permit renewal for Denton WWTP in May 2020.
WWTP has a design capacity of 0.8 MGD and is currently authorized to discharge
MGD into Lick Creek, a class WS-IV and zero 7Q10 flow stream. The Facility
about 1800 customers within the Town.
Status
of Pretreatment Program (check
1) facility has no SIU's, does have
2) facility has no SIU's, does not have
3) facility has Sills and DWQ approved
3a) Full Program with LTMP
3b) Modified Program with STMP
4) additional conditions regarding
all that apply)
Division approved Pretreatment Program that is INACTIVE
Division approved Pretreatment Program
Pretreatment Program (list "DEV" if program still under development)
Pretreatment attached or listed below
_
-
-
-
X
-
Permitted
Last
Reported
Time
period for
last
reported
Actual
Time
period
for
actual
L/STMP, approval
date:
TMP, 10/24/2017
Industrial Flow, MGD
0.08
0.035
2016
2021
Most recent:
10/24/2017
Uncontrollable Flow, MGD
NA
0.049
11/10/2016
2021
Next Cycle:
10/23/2022
PW: Find S/LTMP document for next section.
POC in LTMP/
Parameter of
Concern (POC)
Check List
POC due to
New effluent
limit or
monitoring in
NPDES permit
POC due to
previous
NPDES/ Non-
Disch Permit
Limit or
monitoring
Required by
EPA*
Required
q
by 503
Sludge**
POC due
to SIU"'
POTW
POC
(Explain
below)***
*
STMP
Effluent
Freq
LTMP
Effluent
Freq
PQLs review
From STMP, mg/I
Comments
X
BOD
X
X
Q
2
X
TSS
X
Q
2.5
X
NH3
X
Q
0.1
X
Arsenic
X
Q
0.01
X
Cadmium*
X
X
X
X
Q
0.002
X
Chromium'
X
X
Q
0.005
X
Copper'
X
X
X
X
X
Q
0.002
Cyanide
Q
0.01
X
Lead'
X
X
X
Q
0.01
X
Mercury
X
Q
1 ng/I
X
Molybdenum
X
Q
0.1
X
Nickel'
X
X
Q
0.01
Silver
Q
0.01
X
Selenium
X
Q
0.005
X
Zinc'
X
X
Q
0.01
X
Dichlorobromomethane
Q
0.001
X
Oil & Grease
Q
5
X
%Solids
X
Q
X
Sludge to disposal flow
X
Q
Bis(2-ethylhexyl
X
TN
TP
Footnotes:
*Always in the LTMP/STMP
** Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators)
***Only in LTMP/STMP while SIU still discharges to POTW
26689 NPDES_PT POCs review -dy.xlsx
Revised: July 24, 2007

.... Only in LTMP/STMP when pollutant is still of concern to POTW
Updated by pw
POCs that need to be added to STMP
Is all data required on STMP on DMRs?
Yes
No
NPDES PERMIT WRITER (PW) COMPLETES when issuing NPDES permit:
26689 NPDES_PT POCs review -dy.xlsx
Revised: July 24, 2007

NPDES Permit Public Notice Date:
Effective date:
180 days after effective (date):
CENTRAL OFFICE PRETREATMENT STAFF COMPLETES THIS PART:
Comments from PT central to NPDES pw, PT staff Facility, and PT staff region (lex., explanation of anv POCs: infovou have on IU related investigations into
NPDES oroblemsl:'
HWAs/AT and STMP needs to be updated by permittee 180 days after the effective date. One IUP has a copper limit of 0.2 mg/I (MAHL for copper will go from 1.11
lb/day to 0.67 lb/day) - No overallocation expected.
Is all data required on STMP in spreadsheets with HWA/AT submittal? !Yes
!No
REGIONAL OFFICE PRETREATMENT STAFF COMPLETES THIS PART:
Comments from PT RO Staff to NPDES pw. PT staff Facility. and PT staff central (ex. issues noted missed above, updates on the actions required
above).
26689 NPDES_PT POCs review -dy.xlsx
Revised: July 24, 2007

Pretreatment Program Info Database
for Program Name Denton
WWTP Name Town of Denton
Program Approval Date 08/05/1985
Pretreatment Status
Region
County
NPDES Number
NPDES Effective Date
NPDES Expire Date
POTW is Primary WWTP
Design Flow mgd
WWTP SIU's
WWTP CIU's 0
1
date Inactive
Modified
WSRO
Davidson
NC0026689
08/01/2016
02/28/2021
TRUE
0.8000
Program SIUs
Program ClUs
printed on: 5/20/2021
Stream Information
7Q10 Flow cfs / mgd
1Q10 Flow cfs / mgd
Stream Classification
IWC % at 7Q10 100.00
0
0.00
WS-IV
/ 0.00
/ 0.00
Basin Number YADO8
Receiving Stream Name LICK CREEK
Last PAR Rec 01/12/2021
Current Fiscal 12/17/2020
Year PCI Done
Last Audit on 10/16/2018
% Design mgd is SIU permitted
1' I
0
Date Next Due
Date Received by DWR
Date Approved
Adopt Date Required
Date Adopted
09/01/2021
09/07/2016
11/10/2016
10.00
08/09/2017
10/24/2017
PAR Due Date 03/01 /2022
Audit Year Nex122/23
Permitted SIU flow (mgd) [Pt_SIU) 08
mercury
1631
required
yes
03/31/2025
05/11/2020
08/05/2020
01/04/2013
01/18/2013
12/17/2012
12/31/2019
03/17/2020
Info in this Box from Pt Contacts
PT_Pro
g.Prime
Formal Name
Phonel
ext
Fax
Date Date Date
Attended Attended Attended
HWA Wksp IUP Wksp PAR Wksp
Mr. Troy Branch (Prim 11(336) 859-4460
I 1(336) 859-3381 II 5/10/2006 I
I 1/27/2005
[e-mail]
Water and Wastewater PO Box 306
27239
Pretreatment Related NOVs from DWQ
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7/13/2021 Mail - Yitbarek, Diana - Outlook
RE: NCO026689 - Denton WWTP
Yitbarek, Diana <[e-mail]>
Tue 7/13/2021 15:37
To: Troy Branch <[e-mail]>
Cc: Montebello, Michael J<[e-mail]>; Graznak, Jenny <[e-mail]>
Good afternoon, Troy — Hope you are well.
I will send you the draft permit files soon for your review. But, first, I wanted to provide information
to one pending item and clarify another item discussed in previous email.
1. I followed up with my Supervisor, Michael, about the request to reclassify a stream:
a. The permittee may request updated USGS data by filling out and submitting the form at
the following link: https://forms.office.com/Pages/ResponsePage.aspx?
id= 3IF2etC5mkSFw-zCbNftGaDxdyaAMxFNvcX-
QHejkCpUNzdXOU9PTjA1RjNWRURYRIFQRjFaUUZRWiQIQCNOPWcu. He also suggested
you reach out to the Classification & Standards group if you need additional information
on the stream classification and water standards. Here are FAQs & answers about
classifications.
i. One clarification about the limits for dichlorobromomethane and bis (2-ethylhexyl)
phthalate (carcinogens). Per 15A NCAC 02B .0206, the toxic substance standards
to protect human health follow the mean annual flow (instead of the 7Q10
flow) to protect human health from carcinogens through the consumption of
water, fish, and shellfish unless site -specific fish contamination concerns
necessitate the use of an alternative design flow.
2. The limit for dichlorobromomethane remains the same as the previous permit cycle. You ask
great questions, and that made me look twice. I mixed up the water quality standard for
dichlorobromomethane for the one for dibromochloromethane. Since the effluent limit remains
the same, no compliance schedule is added for dichlorobromomethane.
Please let me know if you have any questions,
Best,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
D_ECr)
1101:4m1004 Fnwwr.wrui m�,:l�vl
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
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7/13/2021
Mail - Yitbarek, Diana - Outlook
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Troy Branch <[e-mail]>
Sent: Wednesday, July 7, 2021 08:24
To: Yitbarek, Diana <[e-mail]>
Subject: [External] RE: NC0026689 - RE: Denton WWTP
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Thank you very much for the clarification, that helps me understand it a bit. Apparently the 7Q10 calculations
were made during the engineering phase of moving our outfall to Lick Creek in 1999. Thanks again.
Troy B. Branch
From: Yitbarek, Diana <[e-mail]>
Sent: Tuesday, July 6, 2021 2:17 PM
To: Troy Branch <[e-mail]>
Cc: Graznak, Jenny <[e-mail]>
Subject: NC0026689 - RE: Denton WWTP
Good afternoon, Troy - Thanks for your message. Questions are always welcome. Please find some
responses below.
Why the 7Q10 flow was 0 Zero? That stream goes 14 miles north from my outfall so how can it
be the total flow?
The 7Q10 is the lowest 7-day average flow that occurs (on average) once every 10 years, and it is
calculated by USGS. The 7Q10 represents a critical condition permit writers use in calculations to
ensure the discharge does not cause or contribute to an excursion above water quality
standards. Per Division's guidance, the permit writer may request a 7Q10 flow recalculation when a
facility is expanding, or a facility is commencing to discharge. According to the Division's files, the
7Q10 for this stream was calculated in the 90's in this report.
Where do these stream standards come from? Is that the EPA or river keeper?
The Water Quality Standards (WQS) are mainly developed by EPA. Some are developed by the
State. The WQS Regulation (40 CFR 131) establishes the requirements for States and Tribes to
review, revise and adopt WQS. It also establishes the procedures for EPA to review, approve,
disapprove and promulgate WQS. See additional information here.
Can I request that the stream be reinspected and classified?
I am not sure about the stream reclassification process or how the WWTP can request that to USGS.
I will follow up with my supervisor/team and get back to you on that.
Please let me know if you have any questions,
Best,
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7/13/2021 Mail - Yitbarek, Diana - Outlook
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Troy Branch <troy.branchjtownofdenton.com>
Sent: Thursday, July 1, 2021 11:52
To: Yitbarek, Diana <[e-mail]>
Subject: [External] RE: Denton WWTP - External Meeting
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Diana,
I did want to ask why the 7Q10 flow was 0 Zero? That stream goes 14 miles north from my outfall so how can I be
the total flow? Also, Where do these stream standards come from? Is that the EPA or river keeper? Can I request
that the stream be reinspected and classified? I truly am not trying to be problematic, I just don't like having my
hands tied when I am sincerely trying to do the right thing.
Thank you for your time today and your assistance in this matter.
Troy Branch
From: Yitbarek, Diana <[e-mail]>
Sent: Thursday, July 1, 2021 11:40 AM
To: Troy Branch <troy.branchhtownofdenton.com>
Cc: Graznak, Jenny <jenny.graznakj ncdenr.gov>
Subject: Re: Denton WWTP - External Meeting
Troy - It was good talking to you. Thank you all for your time.
To sum up, the low limits for this Facility are due to the stream classification: WS-IV - water supply
and zero flow stream (7Q10 = 0).
Some of the discussed items to address the dichlorobromomethane issue:
1. Coating/sealing chlorine contact chamber and evaluate chlorine contact chamber O&M
2. Lowering flow in the summer and assess lowering chlorine contact time
3. Assess method of disinfection. Look into alternative disinfectants
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7/13/2021 Mail - Yitbarek, Diana - Outlook
4. Assess incoming organics and chlorine from industrial sources
5.
We'll research the potential for a water effect ratio for organics and let you know what we find.
Addressing your question on dichlorobromomethane. I am glad you asked about it. The 2016
renewal application used a 0.95 ug/L Water Quality Standard (WQS) Criteria for Aquatic Life and
Human Health. In the 2021 renewal, I am using 0.80 ug/L, as found in the EPA's WQS criteria
tables. But I just noticed our NC DEQ WQS table has a 0.55 ug/L. I will follow up with the standards
group, clear out this, and add the information into the fact sheet.
The public notice for Denton's NPDES permit is scheduled for 7/12/2021. I will send you the draft
package then, and once you review it, feel free to get back to me with any questions, comments, or
concerns.
Thank you,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Yitbarek, Diana
Sent: Wednesday, June 30, 2021 10:53
To: Troy Branch <troy.branchjtownofdenton.com>; Montebello, Michael J <Michael.Montebellojncdenr.gov>
Cc: Graznak, Jenny <[e-mail]>
Subject: Denton WWTP - External Meeting
When: Thursday, July 1, 2021 10:00 AM-10:30 AM.
Where:
Look forward to meeting you tomorrow, Troy. Please use the Teams link provided at the bottom of
this thread to join us. If you have any issues joining, please contact me at 415-735-5582.
All - we'll be discussing June 28, 2021, 10:06, email with Troy's questions.
-Diana
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7/13/2021 Mail - Yitbarek, Diana - Outlook
From: Troy Branch <troy.branchjtownofdenton.com>
Sent: Wednesday, June 30, 2021 2:52:05 PM
To: Yitbarek, Diana <diana.yitbarekja ncdenr.gov>
Subject: [External] RE: (meeting) RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Good morning Diana,
Tomorrow at 10:00 will be fine. Will you be calling me? The best number will be 336-859-4460. Thank you.
Troy Branch
From: Yitbarek, Diana <diana.yitbarekj ncdenr.gov>
Sent: Wednesday, June 30, 2021 8:42 AM
To: Troy Branch <[e-mail]>
Cc: Graznak, Jenny <[e-mail]>
Subject: (meeting) RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good morning, Troy - I am following up on this email. Please let me know if you'd like to meet and
what time would work best for you. (see email below)
Thank you,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Yitbarek, Diana <diana.yitbarekj ncdenr.gov>
Sent: Monday, June 28, 2021 12:09
To: Troy Branch <[e-mail]>
Subject: Re: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Troy - for the meeting with my supervisor, would Thursday, July 1 at 10 am work for you?
If that day does not work, we could also schedule anytime on Friday morning, or look at our
schedules for next week.
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7/13/2021
Please let me know what works best for you,
Best,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
Mail - Yitbarek, Diana - Outlook
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
E CS
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Troy Branch <[e-mail]>
Sent: Monday, June 28, 2021 11:56
To: Yitbarek, Diana <diana.yitbarekjncdenr.gov>
Subject: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Diana,
I have reviewed the data enclosed, compared to my eDMRs and found no errors. Thank you for forwarding my
concerns.
Troy Branch, UMC
Town of Denton WWTP ORC
From: Yitbarek, Diana <[e-mail]>
Sent: Monday, June 28, 2021 11:25 AM
To: Troy Branch <[e-mail]>
Cc: Montebello, Michael J <[e-mail]>
Subject: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good morning, Troy - I understand your concern. We could schedule a meeting to discuss this and
ask my supervisor, Michael, if there are means to appeal the decision.
Before we move forward, let's make sure the data we used for the calculations is reviewed by your
facility. I am attaching the data provided in the DMRs and effluent pollutant scans; please let me
know if anything differs from the data in your files - especially for the three compounds (bis(2-
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7/13/2021 Mail - Yitbarek, Diana - Outlook
ethylhexyl) phthalate, dichlorobromomethane, and copper). If any result is different, please provide
the lab report.
Best,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
E CS
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Troy Branch <troy.branchjtownofdenton.com>
Sent: Monday, June 28, 2021 10:06
To: Yitbarek, Diana <diana.yitbarek_@ ncdenr.gov>
Subject: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Diana,
Is there means to appeal your decision to lower the limits of Dichlorobromomethane? It is already unreasonably
low. Any further reduction is slitting our throats. Our rural WWTP does not have the technology to further reduce.
We are investing $100,000 this coming fiscal year to address and avoid further fines by lining our chlorine contact
chamber. To meet these unreasonable limits we would need an incredible amount of funds to change our
disinfectant away from chlorine to an alternative method, in which would require grant monies and for a town of
this size and demographics there isn't any.
Is your decision to lower the limit and add these other limits based on math or is there stream standards that are
required? For example, is there an animal or plant in my receiving stream that is being affected by this pollutant?
From asking around to other WWTP's in my area, this pollutant is very rare to have included in NPDES permits. We
respectfully request that you reconsider lowering this limit.
Thank you for your attention in this matter.
Troy Branch, UMC
Town of Denton WWTP ORC
From: Yitbarek, Diana <diana.yitbarekjncdenr.gov>
Sent: Friday, June 25, 2021 2:19 PM
To: Troy Branch <[e-mail]>
https://outlook.office365.com/mail/sentitems/id/AAQkADNmOTIxZjdhLTEyMWYtNDEzMS1 i0GNiLTkxNmZhYWJmZThIMAAQABNMrNXgA19KgOoto... 7/13

7/13/2021 Mail - Yitbarek, Diana - Outlook
Cc: Graznak, Jenny <jenny.graznakgncdenr.gov>
Subject: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good afternoon, Troy - Hope you are well.
We have another update and two questions for you. Based on the reasonable potential analysis
(RPA), we are including a Monthly Average limit for copper (15.6 ug/I), and we are updating the
limit for dichlorobromomethane (from 1.3 ug/I to 1.12 ug/I). I am attaching the data provided in the
DMRs; please let me know if anything differs from the data in your files.
To provide an opportunity for the Town to develop a plan to assess potential sources of copper and
dichlorobromomethane, we could add a 3-year schedule of compliance to the permit. Please let me
know whether the Town want us to include the compliance schedule, and feel free to reach out
with any questions you might have,
Thank you and have a good weekend,
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
bE Q!3
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Yitbarek, Diana <[e-mail]>
Sent: Thursday, June 24, 2021 12:59
To: Troy Branch <troy.branchj townofdenton.com>
Subject: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good afternoon, Troy
Thank you for updating the temperature values in the eDMR. We are close to completing the draft
permit and need your input on the following:
Based on the reasonable potential analysis (RPA) and the Bis(2-Ethylhexyl) Phthalate EPA criteria
for water supply (WS) streams, 0.32 pg/L, we are including a Monthly Average limit for Bis(2-
Ethylhexyl) Phthalate (0.45 pg/I). Attached is the Bis(2-Ethylhexyl) Phthalate data provided in the
eDMR.
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7/13/2021 Mail - Yitbarek, Diana - Outlook
*Results of < 10 ug/L are considered compliant per 2021 available methods for Bis(2-
Ethylhexyl) Phthalate
To provide an opportunity for the Town to develop a plan to assess potential sources of Bis(2-
Ethylhexyl) Phthalate, we could add a 3-year schedule of compliance to the permit.
Please let us know whether the Town needs us to include the compliance schedule, and feel free
to reach out with any questions you might have,
-Diana
Diana Yitbarek (she/her)
Engineer
T: 919-707-9130
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email.
We can also be available via Microsoft Teams or other web -based calling services if requested. Thanks for your patience and stay
safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties.
From: Yitbarek, Diana <[e-mail]>
Sent: Friday, June 4, 2021 12:33
To: Troy Branch <[e-mail]>
Subject: Re: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
You are right. October 2020. No 2021.
Have a good weekend!
-Diana
From: Troy Branch <[e-mail]>
Sent: Friday, June 4, 2021 12:05
To: Yitbarek, Diana <[e-mail]>
Subject: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
rCAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Diana,
https://outlook.office365.com/mail/sentitems/id/AAQkADNmOTIxZjdhLTEyMWYtNDEzMS1 iOGNiLTkxNmZhYWJmZThIMAAQABNMrNXgA19KgOot0... 9/13

7/13/2021 Mail - Yitbarek, Diana - Outlook
I see what you are talking about now, from October 2020. Yes, you are correct. Not sure what the heck happened
there. I'll redo the eDMR and resubmit.
Troy
From: Yitbarek, Diana <[e-mail]>
Sent: Wednesday, June 2, 2021 3:32 PM
To: Troy Branch <troy.branchjtownofdenton.com>
Subject: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good afternoon, Troy
Thank you for clarifying the instream requirement. You are right. This facility is an active member of
the Yadkin Pee Dee River Basin Association. Instream monitoring requirements for dissolved oxygen,
temperature, and conductivity have been waived for participation in the program.
I have some data that I need to confirm with you. Please double-check the 10/2021 temperature
DMR entries with your lab results. Let me know the correct result/unusual event, and update the
eDMR accordingly.
8O
70
50
50
40
30
20
10
Temperature, C
0
8f 1/2016 8/i/2017 8/1/2013 8/1f2019 8/1/2020
Thank you,
-Diana
Diana Yitbarek (she/her)
Engineer
T: [phone]
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 North Salisbury Street, Raleigh, NC 27604
DE C
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7/13/2021 Mail - Yitbarek, Diana - Outlook
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Yitbarek, Diana <[e-mail]>
Sent: Friday, May 14, 2021 12:36
To: Troy Branch <troy.branchjtownofdenton.com>
Subject: Re: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Troy,
Thank you for the information provided. Regarding item 3, I need the upstream and downstream
monitoring data. You can provide it in an excel sheet for now. The permit requires:
Dissolved oxygen, temperature, and conductivity at the upstream and downstream sampling
location 3/week.
Please let me know if you have any questions.
Best,
-Diana
Diana Yitbarek
Engineer
T: [phone]
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 N. Salisbury Street, Rm. 925T, Raleigh, NC 27604-1170
*Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We
can also be available via Microsoft Teams if requested. Thanks for your patience and stay safe.
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties.
From: Troy Branch <troy.branchjtownofdenton.com>
Sent: Tuesday, May 11, 2021 09:34
To: Yitbarek, Diana <diana.yitbarekjncdenr.gov>
Subject: [External] RE: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
Diana,
https://outlook.office365.com/mail/sentitems/id/AAQkADNmOTIxZjdhLTEyMWYtNDEzMS1 iOGNiLTkxNmZhYWJmZThIMAAQABNMrNXgA19KgOot... 11/13

7/13/2021 Mail - Yitbarek, Diana - Outlook
I look forward to working with you to complete the NPDES Permit. Here is the information that you requested. If it
is not what you need, please do not hesitate to contact me at this email address or my office number is
336.859.4460. Thank you and have a great rest of your week.
1. A) EPS for 2019 Attached
B) EPS for 2017 was conducted on February 13, 2017
2. Attached
3. Upstream and Downstream sampling is conducted weekly by Environment One in an agreement with the
Yadkin/PeeDee River Basin Association and the State. For the additional Up Stream and Down Stream sampling, I
will add to eDMRs in the future. If I am not clear on this, please elaborate what you need to complete this
process.
4. Attached in online GIS Map along with location of WWTP and Discharge location on Lick Creek.
5. Attached
6. None to add.
Thank you for your assistance in this matter.
Troy B. Branch
Town of Denton WWTP ORC
From: Yitbarek, Diana <diana.yitbarekjncdenr.gov>
Sent: Friday, April 30, 2021 4:43 PM
To: troy.branchjtownofdenton.com
Cc: Snider, Lon <lon.sniderncdenr.gov>
Subject: NC0026689, Denton WWTP, Town of Denton, Davidson County, WSRO
Good afternoon, Dear Troy Branch
I am the assigned permit writer for the subject line facility. I look forward to working with you to
complete this permit renewal. Thanks for submitting the May 15, 2020, NPDES permit application. I
will appreciate your support with some additional information:
1. Please provide the signed Effluent Pollutant Scan (EPS) for 2019 and the date of sampling for
the 2017 EPS.
2. Please provide a process diagram that includes the capacity of the treatment units, a water
balance showing approximate flow rates between treatment units, and the influent and
effluent sampling locations.
3. Please ensure all the sampling results from the upstream and downstream sampling location
points are included in the eDMR system.
4. Please provide coordinates for the upstream and downstream location points (approximate
coordinates to the actual location from an online map would suffice).
5. Please provide the sludge disposal plan.
6. If there are additional pollutants with certified methods to be reported, please
submit this Chemical Addendum.
I will set a due date of May 29, 2021, but if you need more time, just let me know.
Please let me know if you have any questions.
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7/13/2021 Mail - Yitbarek, Diana - Outlook
-Diana
Diana Yitbarek (she/her)
Engineer
T: [phone]
[e-mail]
NPDES Municipal Permitting Unit
NC Department of Environmental Quality/ Division of Water Resources
Mailing: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical: 512 N. Salisbury Street, Rm. 925T, Raleigh, NC 27604-1170
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Permit No. NC0026689
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. 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
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).
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*{1.1366724ln hardness](0.041838)} - e^{0.9151 [ln hardness]-3.1485}
Cadmium, Acute Trout waters
WER*{1.1366724ln hardness](0.041838)} - e^{0.9151[ln hardness]-3.6236}
Cadmium, Chronic
WER*{1.1016724ln 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*{1.462034ln hardness](0.145712)} • e^{1.273[ln hardness]-1.460}
Lead, Chronic
WER*{1.462034ln 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}
Page 1 of 4

Permit No. NC0026689
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.
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) 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. NC0026689
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 + 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.
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 1 + { LKPoI �SS(1+a)l r 1 0-6l }
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 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 = (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:
1Q10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0026689
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.
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)]
55.71
Data provided in DMRs
Average Upstream Hardness (mg/L)
[Total as, CaCO3 or (Ca+Mg)]
26.0
Data provided in DMRs
7Q10 summer (cfs)
0.0
NPDESFiles
1Q10 (cfs)
0.0
Calculated in RPA
Permitted Flow (MGD)
0.8
NPDES permit application
Date: 6/1/2021
Permit Writer: Diana Yitbarek
Page 4 of 4

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
NORTH CAROLINA
Director Environmental Quality
MEMORANDUM
To:
July 21, 2021
Eric Hudson
NC DEQ / DWR / Public Water Supply
Winston-Salem Regional Office
From: Diana Yitbarek
NC DEQ / DWR / Municipal Permitting Unit
Subject: Review of Draft NPDES Permit NC0026689
Denton WWTP
Davidson County
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
August 13, 2021. If you have any questions on the draft permit, please contact me at 919-707-9130 or
via e-mail [diana.yitbarek(a,ncdenr.gov].
RESPONSE: (Check one)
§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§
Concur with the issuance of this permit provided the facility is operated and maintained properly,
the stated effluent limits are met prior to discharge, and the discharge does not contravene the
designated water quality standards.
Concurs with issuance of the above permit, provided the following conditions are met:
Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signature:
Date: Z/j 2_ �vz/
NORTH D_``E
Department of anuimnmenrni ooar
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

NORTH CAROLINA
DAVIDSON COUNTY
Affidavit of Publication
Before the undersigned, a Notary Public of said County
and State, duly commissioned, qualified, and authorized
by law to administer oaths, personally appeared
Stan Bingham
who being first duly sworn, deposes and says that he is
Publisher
of The Denton Orator, engaged in the publication of a
newspaper known as The Denton Orator, published, issued
and entered as second class mail in the Town of Denton, in
said County and State; and that he is authorized to make
this affidavit and sworn statement; that the notice or other
legal advertisement, a true copy of which is attached
hereto, was published in The Denton Orator on the
following dates:
7/21/2021
and that this said newspaper in which such notice, paper,
document, or legal advertisement was published was, at
the time of each and every publication, a newspaper
meeting all of the requirements and qualifications of
Section 1-597 of the General Statutes of North Carolina,
1996, as amended, and was a qualified newspaper within
the meaning of Section 1-597 of the General Statutes of
North Carolina.
Sworn to and subscribe; before me, this
day o
Notary Public
My commission expires:
2021.
2)2 --2/
KELLY H BLEDSOE
Notary Public, North Carolina
New Hanover County
My Commission Expires
April 28, 2024
Wednesday, July 21, 2021
Public Notice
North Carolina Environmental
,Management Commission/NPDES
Unit
- 1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES
Wastewater Permit NC0026689
Denton WWTP
The North Carolina Environmental Man-
' agement Commission proposes to issue a
NPDES wastewater discharge permit to the
person(s) listed below. Written comments re-
garding the proposed permit will be accepted
until 30 days after the publish date of this no-
tice. The Director of the NC Division of Water
Resources (DWR) may hold a public hearing
should there be a significant degree of public
interest. Please mail comments and/or infor-
mation requests to DWR at the above address.
Interested persons may visit the DWR at 512
N. Salisbury Street, Raleigh, NC 27604 to re-
view information on file. Additional informa-
tion on NPDES permits and this notice may be
found on our website:
http://deq.nc.gov/about/divisions/water-re-
source s/water-resources-permits/wastewater-
branch/npdes-wastewater/public-notices,or by
calling [phone]. The Town of Denton
(P.O. Box 306, Denton, NC 27239) has re-
quested renewal of the NPDES Permit
NC0026689 for its Wastewater Treatment
Plant in Davidson County. This permitted fa-
cility discharges treated domestic and pre-
treated industrial wastewater to Lick Creek in
the Yadkin Pee Dee River Basin. Ammonia,
biochemical oxygen demand, bis (2-ethylhexyl)
phthalate, copper, dichlorobromomethane, dis-
solved oxygen, fecal coliform, pH, total resid-
ual chlorine, and total suspended solids are
water quality limited parameters in the per-
mit. This discharge may affect future alloca-
tions in this segment of the Lick Creek.