NC0026689_PERMIT ISSUANCE_20000228

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0026689
Denton WWTP
Document Type:
Permit Issuance
Wasteload Allocation
'Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
February 28, 2000
This documezit igs priatea on reuse paper - igzzore ariy
content oaa the revenge Miae

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T Stevens, Director
February 28, 2000
Mr. Jeff Dennard, Superintendent, Water and Wastewater
Town of Denton
P.O. Box 306
Denton, North Carolina 27239
Subject: NPDES Permit Issuance
Denton WWTP .
Permit No. NC0026689
Davidson County
Dear Mr. Dennard:
In accordance with the application for discharge permit, the Division is forwarding herewith the
subject NPDES permit. This permit is issued pursuant to the requirements of North Carolina General
Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency dated December 6, 1983.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the office of Administrative Hearings,
Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such a demand is made, this permit
shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of Water
Quality. Part B, E.4. addresses the requirements to be followed in case of change in ownership or control of
this discharge. The Division of Water Quality may require modification or revocation and reissuance of the
permit.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or any
other federal or local governmental permit.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 510 (lax) 919 733-0719
An Equal Opportunity Affirmative Action Employer [e-mail]

If you have any questions concerning this permit, please contact Susan Wilson at telephone number
[phone], ext. 510.
Sincerely,
Original Signed By
David A Goodrich
Kerr T. Stevens
Enclosures: NPDES Permit No. NCO026689
cc: Mr. Roosevelt Childress, EPA
Winston-Salem Regional Office, Water Quality
Point Source Compliance Enforcement Unit
Central Files
NPDES.Files

Permit No. NCO026689
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1. other lawful standards
and regulations promulgated and adopted by the North Carolina Water Quality Commission, and the
Federal Water Pollution Control Act, as amended,
Town of Denton
is hereby authorized to discharge wastewater from a facility located at
Denton Wastewater Treatment Plant
Off NCSR 2569
Denton
Davidson County
to receiving waters designated as Lick Creek in the Yadkin — Pee Dee River Basin
in accordance with the discharge limitations, monitoring requirements, and other conditions set forth in
Parts L IL III, and IV hereof.
This permit shall become effective April 1, 2000.
This permit and the authorization to discharge shall expire at midnight on August 31, 2004.
Signed this day February 28, 2000.
Original Signed By
KerrT. Stevens, Director yVv4 V
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NC0026689
SUPPLEMENT TO PERMIT COVER SHEET
Town of Denton
is hereby authorized to:
Continue to operate the existing 0.30 MGD wastewater treatment facility consisting of a
flow meter, bar screen, grit chamber, wetwell, comminutor, oxidation ditch with two
mechanical aerators, dual secondary clarifiers with sludge return, sludge holding tank,
sludge drying beds, effluent chlorination and post aeration, located at the Town of Denton
Wastewater Treatment Plant, off NCSR 2569, southwest of Denton, Davidson County (See
Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Lick Creek which is classified WS-IV waters in the Yadkin -Pee Dee
River Basin, and,
3. After issuance of an Authorization to Construct permit, begin construction of facilities for
the expansion of the wastewater treatment plant to 0.80 MGD and relocate the discharge
to Lick Creek which is classified WS-IV waters in the Yadkin -Pee Dee River Basin.

I,icl Proposed Location
-/ _ . Lick Creek it --3 r\
v,11m¢ r �.,.. Cyr /^
tn•in� j / goy - - �S Lat.: 37° 3T 27"
Lon 80° 09 17 (
g - +1�� Existing Location
+
a - � Town of Denton UT Lick
Creek
Lat.: 350
37' 22'
Lone 80° 09 22"
!� > J -
} Cein i'
6u�a��` tabu(
\'Y Cr n� r
f'
M„c, Ir1' ,
Facility wx, r
Location '' }p
North Town of DntoWVrVP
O0266 9
Davidvrn Camty

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO026689
During the period beginning ON THE EFFECTIVE DATE AND LASTING UNTIL EXPANSION ABOVE 0.3 MGD, the Permittee is authorized to discharge from
outfall serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
".LIMITS' =5'-. "
MONITORING REQUIR_EMENI S'
Monthly _
Avera`e
;Weekly"
Ave"ra e '
Daily'Mazimum
". _-
Measurement
Fre uenc' '
Sample,.
_ type
Sample
Location'
Flow MGD
0.30
Continuous
Recording
I or E
BOD5 2 (April 1 - October 31)
19.0 mg/L
28.5 mg/L
Weekly
Composite
E, I
BOD5 2 (November 1 - March 31)
24.0 mg/L
36.0 mg/L
Weekly
Composite
E, I
Total Suspended Solids 2
30.0 m /L
45.0 m /L
Weekly
Composite
E, I
Dissolved Oxygen 3,
Weekly
Grab
E, U, D
H 4
Weekly
Grab
E
NH3 as N (April 1 - October 31)
6.0 mg/L
Weekly
Composite
E
NH3 as N (November 1 - March 31)
13.0 mg/L
Weekly
Composite
E
Total Residual Chlorine 5
2/Week
Grab
E
Temperature, OC
Daily
Grab
E
Temperature, OC
Weekly
Grab
U, D
Fecal coliform
200/100 mL
400/100 mL
Weekly
Grab
E, U, D
Total Nitrogen NO2+NO3+TKN
Quarterly
Composite
E
Total Phosphorus
Quarterly
Composite
E
Conductivity
Wee kl
Grab
E, U, D
Chronic Toxicity 6
Quarterl
Composite
E
Notes:
Sample Locations: E - Effluent, I - Influent, U - Upstream at least 50 feet above the discharge point, D - Downstream at the NCSR 2505 crossing located approximately
0.5 miles below the discharge point. Instream monitoring is provisionally waived in light o/ the permittee's participation in the Yadkin -Pee Dee River Basin Association.
Instream monitoring shall be conducted as stated in this permit should the permittee end its participation in the Association.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal).
3 The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5 Monitoring requirement applies only if chlorine is used for disinfection.
6 Chronic Toxicity (Ceriodaphnia) P/F ® 90%; February, May, August, November; See Part I, Condition A (3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0026689
During the period beginning ON THE EFFECTIVE DATE AND LASTING UNTIL EXPANSION ABOVE 0.3 MGD, the Permittee is authorized to discharge from
outfall serial number 001. (Continued)
EFFLUENT CHARACTERISTICS
LIMITS ' `
MONITORING:REQUIREMENTS
Monthly-
Average
Weekly
Average
;;Daily Maximum
Measurement,,
-Freuency
Sample'
Tye "
Sample
Location'
Cyanide 7
5.0 /I
22 /I
2/Month
Composite
E
Mercury 8
0.012 N /L
2/Month
Composite
E
Nickel
25.0 /L
261 /L
2/Month
Composite
E
Copper
Monthly
Composite
E
Zinc
Monthly
Composite
E
7 The quantitation limit for cyanide shall be 10 µg/I. Levels reported less than 10 µg/I shall be considered zero for compliance purposes.
8 The quantitation limit for mercury shall be 0.2 µg/I. Levels reported as "< 0.2 µg/I shall be considered zero for compliance purposes.

A (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO026689
During the period beginning UPON EXPANSION ABOVE 0.3 MGD AND OUTFALL RELOCATION TO LICK CREEK and lasting until expiration, the Permittee is
authorized to discharge from outfall serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS - -
MONITORING'REQUIREMENTS
Monthly
Weekly4 +°DatlyMaxlmum
Measurement .
..
Sample,;
Sample
Location t
Flow MGD
0.80
Continuous
Recordin
I or E
BOD5 2 (April 1 - October 31)
5.0 mg/L
7.5 mg/L
3/Week
Composite
E. I
BOD5 2 (November 1 - March 31)
10.0 mg/L
15.0 mg/L
3/Week
Composite
E, I
Total Suspended Solids 2
30.0 m /L
45.0 m /L
3/Week
Composite
E, I
Dissolved Oxygen 3,6
3/Week
Grab
E, U, D
H 4
3/Week
Grab
E
NH3 as N (April 1 - October 31)
2.0 mg/L
3/Week
Composite
E
NH3 as N (November 1 - March 31)
4.0 mg/L
3/Week
Composite
E
Total Residual Chlorine 5
17 p /L
3/Week
Grab
E
Temperature, oC
Daily
Grab
E
Temperature, oC
3/Week
Grab
U, D
Fecal Coliform
200/100 mL
400/100 mL
3/Week
Grab
E, U, D
Total Nitrogen NO2+NO3+TKN
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Conductivity
3/Week
Grab
E, U, D
Chronic Toxicity 6
Quarterly
Composite
E
Notes:
i Sample Locations: E - Effluent, I - Influent, U - Upstream at least 50 feet above the discharge point, D - Downstream at the NCSR 1002 crossing near Healing Springs.
Instream monitoring for temperature, dissolved oxygen, fecal coliform, and conductivity shall be conducted three times per week during June, July, August, and September,
and once per week during the remaining months of the year. Instream monitoring is provisionally waived in light of the permittee's participation in the Yadkin -Pee Dee River
Basin Association. Instream monitoring shall be conducted as stated in this permit should the permittee end its participation in the Association.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal).
3 The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5 Monitoring requirement applies only if chlorine is used for disinfection.
6 Chronic Toxicity (Ceriodaphnia) P/F @ 90%; February, May, August, November; See Part I, Condition A (3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO026689
During the period beginning UPON EXPANSION ABOVE 0.3 MGD AND OUTFALL RELOCATION TO LICK CREEK and lasting until expiration, the Permittee is
authorized to discharge from outfall serial number 001. (Continued)
EFFLUENT CHARACTERISTICS
LIMITS
MONITORINGREQUIREMENTS
Morith,ly •:,
%Avers a
Weekly„:I
Avers e:'
DailySMaxtmum';;.Measurernerit'
"'.',-
'Fre"`bent ..
Sample
T e
Sample
Location'
Cyanide 7
5.0 /I
22 /1
2/Month
Composite
E
Mercury B
0.012 u /L
2/Month
Composite
E
Nickel
25.0 /L
261 /L
2/Month
Composite
E
Copper
Monthly
Composite
E
Zinc
Monthly
Composite
E
7 The quantitation limit for cyanide shall be 10 µg/I. Levels reported less than 10 µg/I shall be considered zero for compliance purposes.
B The quantitation limit for mercury shall be 0.2 µg/I. Levels reported as "< 0.2 µg/I shall be considered zero for compliance purposes.

A. (3.) CHRONIC TOXICITY PERMIT LIMIT (gRTRLY) NCO026689
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnin dubia at an effluent concentration of 90 %.
The permit holder shall perform at a minimum,guarterlu monitoring using test procedures outlined in the
"North Carolina Cenodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions or "North Carolina Phase 11 Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998)
or subsequent versions. The tests will be performed during the months of February, May. August, and
November. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent
discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase 11 Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest
concentration having no detectable impairment of reproduction or survival and the lowest concentration that
does have a detectable impairment of reproduction or survival. The definition of "detectable impairment,"
collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina
Phase fI Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be enterer] on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for
the pass/fail results and THP313 for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to
the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than
30 days after the end of the reporting period for which the report is made.
'test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is
employed for disinfection of the waste stream.
Should there be no discharge of Flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating
the facility name, permit number, pipe number, county, and the month/year of the report with the notation of
"No Flow' in the comment area of the form. The report shall be submitted to the Environmental Sciences
Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will
be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified
to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the last
day of the month following the month of the initial monitoring.
QCL Version 5199

notice
Subject: notice
Date: Tue, 22 Feb 2000 15:40:25 -0500
From: Christie Jackson <[e-mail]>
To: Susan A Wilson <[e-mail]>
I have not received an affidavit for the public notice for Town of
Denton (NC0026689). I have received verbal confirmation that it
published on January 10, 2000. Cory Bracken with the Lexington Dispatch
gave me that info. and advised me that she had mailed the affidavit -
but I still haven't gotten it. You should be able to go ahead and issue
it though.
I of 1 2/22/00 3:47 I'M

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
January 5, 2000
MEMORANDUM
To: Lee Spencer
NC DENR / DEH / Regional Engineer
Winston-Salem Regional Office
From: Christie R. Jackson
NPDES Unit
Subject: Review of Draft NPDES Permit NCO026689
Town of Denton
Davidson County
Im
4 • •
A % OWN%
NCDENFZ
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
H0NVIA 335os 1Ni2d
unvno iiuvm - a1439
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
February 4, 2000. If you have any questions on the draft permit, please contact me at the telephone
number or e-mail address listed at the bottom of this page.
RESPONSE: (Check one)
ETConcur 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.
1-1
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:
Signed Date: 0
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 538 (fax) 919 733-0719
VISIT usONTHE INTERNET@ http://h2o.enr.state.nc.us/NPDES Christie.Jackson@ ncmail.net

DENR/DWQ " ra' C E I V ~-a D
FACT SHEET FOR NPDES PERMIT DEVELOP T_,t�
NPDES No. NC0026689, Denton WWTP °o pt ` dl °H
i nv i g; wn
Facility Information
Applicant/ FaciliName:
Denton WWTP
Wi
Applicant Address:
P.O. Box 306, Denton, NC 27239
Facility Address:
NCSR 2569, Denton, NC
`
Permitted Flow
0. 3 and 0.8 MGD
Type of Waste:
- 90 % Domestic, 10% Industrial
Facility/Permit Status:
Renewal
County:
Davidson
Miscellaneous
Receiving Stream:
UT Lick Creek
Regional Office:
WSRO
Stream Classification:
WS IV
SI: 12-126-(3)
USGS Topo Quad:
E18SW
303(d) Listed?:
Yes, PS/NPS
Permit Writer:
S. Wilson
Subbasin:
03-07-08
Date:
November 5, 1999
Drainage Area (mi2):
0.57
Summer 7Q 10 (cfs)
0
Winter 7Q10 (cfs):
0
Average Flow (cfs):
0.5
IWC (%):
100
Primary SIC Code:
4952
3og2 .0 0. 09 Ci
SUMMARY
Denton is currently under an SOC for flow and toxicity. The SOC includes a schedule for upgrade and
relocation of the discharge. The facility discharges to a UT to Lick Creek, which is zero 7Q10/30Q2. The upgrade
proposal will expand the plant to 0.8 MGD and relocate the outfall to Lick Creek, which is zero 7Q10, positive
30Q2. The existing permit already includes the upgrade to 0.8 MGD. The plant has extensive 1/I problems and has
exceeded the design flow limit during 6 of the last six months. Toxicity failures have been sporadic. The relocation
to Lick Creek will not provide the facility with any greater dilution, but the facility had to relocate the discharge in
order to expand. Toxicity testing will remain Chronic P/F at 90%.
Denton is rated as a Class II facility at 0.3 MGD and Class III facility at 0.8 MGD - monitoring frequencies
given reflect these classifications. Denton is a member of the Yadkin Basin Coalition and instream monitoring via
the permit is waived. However, Lick Creek is not an instream monitoring site for the coalition. Additionally, there
are no ambient sites within the discharge location or the relocation. Benthic studies were performed in 1986 (likely
not indicative of stream conditions today). Lick Creek at NC 8 was sampled in 1996 and rated as fair (listed on 303
d).
A reasonable potential analysis was conducted on all parameters currently monitored [Cr, Ni, Pb, Hg, Cd, CN, Cu,
Zn, phenols, and Ag]. Many parameters had no reasonable potential to violate the water quality standard and have
been eliminated from the permit [but are still required through the facility's pretreatment program].
Reasonable Potential?
Chronic Standard
Cyanide
Yes, with Quantitation Level
Mercury
Yes, with Quantitation Level
Nickel
Yes
Copper
No, Action Level, monitor
Zinc
No, Action Level, monitor
Cadmium
No, eliminate
Chromium
No, eliminate
Silver
No, eliminate
Phenols
No, eliminate
CFAe,4MeTE WITH AI-L
W55, iHAM Pa-&,T5 EU-InMTe)
DI ILy /11M. $nse 0w3 YL 1t=�J W 1U, aV
I
DENR - WATE t QUALM
PcT,io n °:h-vi-`FP
:-`t'I)ES Rci,ejA d
jlalge I

TOXICITY TESTING:
Recommended Requirement: Chronic P/F @ 90% (with the existing discharge and relocation)
COMPLIANCE SUMMARY:
As stated above, the facility has had compliance problems with toxicity and flow (and is under an SOC).
INSTREAM MONITORING:
The facility is part of the Yadkin Pee Dee monitoring coalition and is not required to perform individual monitoring.
PROPOSED CHANGES:
Limits for lead and chromium have been eliminated.
NOTE: The Nickel limit has changed from 88 µg/1 to 25 µg/1 due to the WS-IV classification (this was overlooked
in the previous permit).
Copper and zinc will continue to be monitored due to potential exceedance of the action level standards.
Mercury and cyanide will continue to be limited, however, as specified in the permit compliance can be determined
usin the respective quantitation levels (if less than the quantitation level, then considered "zero").
Other limit and monitoring requirements have remained the same as in the previous permit.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: December 1, 1999 (est.)
Permit Scheduled to Issue: January 17, 2000
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Susan Wilson at
[phone] ext. 510.
REGIONAL OFFICE COMMENT:
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LONG TERM MONITORING PLAN REQUEST FORM
[FACILITY:
INPDES NO.:
(EXPIRATION DATE
IREGION:
IP&E REQUESTOI
IPRETREATMENT CONTACT
IDATE OF REQUEST
Town of Denton WWTP
NCO026689
8/31/99
WSRO
Susan Wilson
8/27/99
IINDICATE THE STATUS OF PRETREATMENT PROGRAM:
1) THE FACILITY HAS NO SIU'S AND SHOULD NOT HAVE PRETREATMENT LANGUAGE
02)THE FACILI HA CQ4&BEVELOPING A PREATREATMENT PROGRAM,
3) ADDITIONAL CONDITIONS REGARDING THE PRETREATMENT PROGRAM ATTACHED.
PERMITTED FLOW: 0.3 MGD currently 0.8 MGD at relocation/expansion
SIU contributions-3;.-L9,000 gpd total?
• INDUSTRIAL.3._..
• DOMESTIC % ?�
I NOTE: >4 X N � ��cc,, %
(This facility monitors for Cu, Zn, Cd, CN, Ag, Pb, Ni, Cr, Hg, and Phenol.
Denton received approval for upgrade and relocation 2/19/99.
V ('- v ✓, '/ V ✓ t/ ✓
1ft Poc T ._ �� Cry dj �f,'fll j .Md, Se A � C�14 t3OQ -r � A✓ (��
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TOXICANT ANALYSIS
Denton WWTP
Facility Name
Denton WWTP
Parameter=
Cd
P
NPDES#
NCO026689
Standard=
2 Ig/I
Ow (MGD)
0.3
7010s (cts)
0
_
n
BDL=1/2DL4ctual Data
RESULTS
IWC (%)
100.00
_
1
1
<2
Std Dev.
0.243975018
c'ving Stream
UT Lick Creek
2
1
<21
Mean
` 0.678571429
Stream Class
31
1
<2
C.V.
0.359542132
I
_
1a
1
<2
FINAL RESULTS
51
1
<2
_Ed
_
61
11<1
Mutt Facto
1.4
_
ax. Pred Cwl1.4
ug/1
7
1Max.
Value
1
pg/
Allowable Cw
2.0
ug/I
8
1Max.
Pred
1.4
pg/
Max. Value
1
9
1Allowable
A
2.00
pg/
Ni
10
1
Max. Pred Cwl377.2
_
ug/I
11
0.5
Allowable Cw
25.0
ug/1
12
0.5
Max. Value
82
13
0.5
<1
_
Pb (lead)
_
14
0.5
<1
Max.Pred Cw
12.5
_
ug/
15
0.5
<1
Allowable Cw
25.0
ugA
16
0.5
<1
Max. Value
10
17
0.5
<1
Cr
_
18
0.5
<1
ax. Pred Cw
I 2.5
_
ug/
19
0.5
<1
Allowable Cwj
50.0
ugA
20
0.5
<1
Max. Value)
2.5
21
0.5
<1
_
CN-
1
22
0.5
<1
_
Max. Pred Cwl
67.2
ug/
23
0.5
<1
Allowable Cwl
Max. Value
5.0
14
ugA
24
25
0.5
0.5
<1
<1
�L
{I
Hg (mercury)
26
0.5
<1
_
Max. Pred Cwl
0.3
ug/
27
0.5
<1
Allowable Cw1
0.0
ugA
28
0.5
<1
Max. Valuel
0.2
Phenol "
Max. Pred Cw1
Allowable Cwl
5
1.0
ug/I
ug/1 At�u-LH's
_
'rM
Max. Valuel
5
Cu
j
Max. Pred Cw543.9l
ug/I
j
Allowable CW1
7.0
ug/IZn
Max. Value]
147
_
ax. Pred Cwl
3707.E
ug/I
Allowable Cwl
50.0
ugA
Max. Value]
_
806
_
_
Ag_(silver)_I
J
Max. Pred Cwl
Allowable Cwl
Max. Value)
2.5
0.1
2.5
ug/l
ug/I U.
� jpFp U
L
_)
_
-
01
1-
lq(o5 =o A•r lZewifArIVA) -ro Licl, Cg&cv-) so Af,(At-yq(s AT 0.8 AWP
(s 17,1& SAME.
11 /3/99

TOXICANT ANALYSIS
Denton WWTP
rameter= Ni
Parameter Pb (lead),
n3DL=1/2D
-RESULTS
Actual Data
n3DL=l) 72 DI
ctual Data
RESULTS
<10
--------------------------
25
271
f 7;-:7
- -----------
7
ll/3/90

TOXICANT ANALYSIS
Denton WWTP
11 /3/99 3

TOXICANT ANALYSIS
Denton WWTP
rameter= JHg (mercury) _ Parameter=IPhenol* P
tandard = 1 0.0121pgA Standard = 0 pgll
n3DL=1/2D,Actual Data RESULTS n3DL=1/2Dactual Data RESULTS
1 0.21 0.2 Std Dev. 0.025I 1 5f <10 Std Dev. 0 _
2 0.11 <.2 _ Mean 0.1063 _ 2 5 <10 _ Mean 5
3 0.11 <.2 C.V. 0.2353 3 5 <10 C.V. 0
4 0.11 <21 4 5 <10
5 0.1 <.2 5 5 <10 _
6 0.1 <.2 Mutt Facto 1.5 6 5 <10 Mult Facto 1 _:
7 0.1 <.2 Max. Value 0.21pg/I':::i 7 5 <10 Max. Value 5 pg/t
8 0.1 <.2 Max. Pred, 0 3 pg/I 8 5 <I0 _ Max. Pred i 5 pgA
9 0.1 <.2 Allowable C 0.01 pg/I 9 5 <10 Allowable C 1.00 pg/1
10 0.1 <.2
11 0.1 <.2 _
121 0.1 <.2 " This standard is for phenolic compounds _
131 0.1 c2 (not phenol, which is likely what the permitte
14 0.1 c2 tested for).
15 0.1 <.2 1
16 at <.2
I _ _
I
I
I_
I
I
46 I 1 1
11/3/99 4

TOXICANT ANALYSIS
Denton WWTP
ameter=ICU I I Parameter = I Zn I Pa
tandardT 7]pgl1 !I Standard= 50 pg/I
I
1 BD D Actual at RESULTS
35.144 nI=1/2D 3DL Actual Data _RESULTS
11 97 9768 68 Sid Dev. 189.59
2 21 21 Mean 32 2 71 71 IMean 137.52
3 147 147 C.V. 1 09821 3 83 83 C.V. 1.3786
4 4 4 4 38 38 f
5 12 12 5 67 67
6 21 21 Mult Facto 3.7 - - 6 49 49 _ Mutt Facto 4.6
7 12 12 Max. Value; 147 pg/l:. 7 66 66 Max. Value 806 pg/I
8 10 10 Max. Pred 1. 543.9 tj 8 84 84 Max. Pred i 3707.E pg/l.
9 53 53 Allowable d 7.00 pg/I:I;I 9 77 77 Allowable C, 50.00 pg/I
10 8 81
10 5252
11 27 27 11 43 43
12 13 13I 12 137 137
13 33 3313 541 541 L
14 17 17 14 120 _ 120
15 13 13 15 69 69 L
_ 16 21 21 16 66 66
17 31 31 17 59 59
18 78 78 18 56 561
19 21 21 19 64 64
20 24 24 20 272 272
21 9 9 21 806 806
_I—iAiJ[l� _�np.fJ 1 O,-
I � I
I
I �
f { { I
11 /3/99
5

TOXICANT ANALYSIS
Denton WWTP
meter=A silver) I_
andard = 0.06 pg/I
n 30L=1/2D ctual Data
RESULTS
I_
1
2.5
<5
Std Dev.
1 0
2
2.5
<5
Mean
2.5
31
2.5
<5
C.V.
0
_
4
2.5
<5
5
2.5
<5
61
2.5
<5
1 Mult Facto
_
77
2.5
<5
1 Max. Value
2.5
pg/
8�
251
<5
Max. Pred � 2.5
pg/
9
2.5
<5
Allowable @ 0.06
pg/
10
2.5
<5
11
2.5
<5
_
{
I_
J
11 /3/99

TOXICANT ANALYSIS
Denton WWTP
Facility Name
NPDES #
Ow (MGD)
701 Os (c/s)
Denton
NC0026689 689
0.3
0
Parameter=
1/2 FAV =
_
n
Cd
19l1
BDL=1/2D Victual DataIRESULTS
P
/WC (%)
100.00
1
1
<21
I Sid Dev.
0.24482325
'vin
cg Stream
UT Lick Creek
_
2
1
<2
Mean
0.687931034
_
Stream Class
_
3
1
<2
C.V.
0.355883421
_
4
1
<2
FINAL RESULTS
5
1
<2
_
Cd
_
6
1
<2
Mult Facto
1.4
_
ax. Pred Cw
1.4
20
7
1
<2
Max. Value
1
pg/
Allowable Cw
2.1
ug-
8
1
<2
Max. Pred
1.4
pg/
Max. Valuef
1
9
14<2
Allowable @
2.10
pp/
Ni
10
1
ax. Pred Cw
Cwf/
Max. Value
�/377.2
261.0
\
ug/�
ug/I
11
12
0.5Allowable
0.5
_
Pb (lead)_
-
14
0.5
<1
ax. Pred Cw
12.5
_
ug/1
15
0.5
<1
_
Allowable Cw
33.8
ug/I
16
0.5
<1
_
Max. Value
10
171
0.5
<1
_
1
Cr
18
0.5
<1
Max, Pred Cw
2.5
_
ug/I
19
0.5
<1
_
Allowable Cw
1022.0
ug/
20
0.5
<1
_
Max. Value
2.5
21
0.5
<1
_
CN-
_
22
0.5
<1
Max. Pred Cw
67.2
ug/
23
0.5
<1
_
Allowable Cw
22.0
ug/
24
0.5
<1
_
Max. Value
14
25
0.5
<1
Hg (mercury)
_
26
0.5
<1
1
ax. Pred Cw
0.3
_
ug
27
0.5
<1
Allowable Cwl
0.0
ug4
28
0.5
<1
Max. ValueL
0.2
Phenol"
Max. Pred Cw
I
5
_
ug/I
Allowable Cwj
1.6
ug/I
_
ax. Value
5�
Cu
Max . Pred Cw
543.9
ug/I
Allowable Cw1
7.3
ug/I
Max. Valuer
147
in
F
_
ax. Pred Cw
3707.6
ug/I
1
Allowable Cw
67.0
ug/I
I
I�
Max. Value)
806
_
Ag (silver)_
_
1
Max . Pred Cwj
2.5
ug/I
Allowable C_w1
1.2
ug/I
Max. Value
2.5
1
1
01
I
12/22/99

TOXICANT ANALYSIS
Denton WWTP
meter=INi I
/2 FAV = 261
Ng/I
Actual Data
_ _ I
RESULTS
_Parameter=lPb lead',
1 /2 FAV =1 33.8
- n3DL=1/2D
pg4
Actual Data
i
(RESULTS
�—
P
n3DL=1/2D
1
2
5
5
<10
<10
Std Dev. 1
Mean 18.17241
14.4693
1
_ 2
5
5
<10
<10
Std Dev.
Mean
0.9285
5.1724
3
5
<10
C.V.
1,77051
3
5
<10
C.V.
0.1795
4
5
<10
4
5
<10
6
20
20
Mu/t Facto
4.6
—I--' 6
10
101
Mult Factor
1.25
—ll
7
8
5
5
<10
<10
Max. Value
Max. Pred (
82
377.2
pg/I ! 7
pg/I ;dl 8
5
5
<10
<10
Max. Value
Max. Pred Cv
10pg/I
12.5
pg/I -;I
pg/I'
9
5
<10
Allowable d
261.00
pgA 1;i. 9
5
<101Allowable
CvJ 33.80
10
5
<10
10
5
<10
11
5
<10
11
5
<10
_
12
82
82
12
5
<10
13
5
<10
13
5
<10
14
5
<10
14
5
<10
15
5
<10
15
5
<10
16
5
<10
16
5
<10
17
5
<10
17
5
<10
18
51
<10
18
5
<10
_
19
5
<10
_
19
5
<10
_
20
5
<10
_
20
5
<10r
21
5
<10
_
21
5
<10
22
5
<10
_
22
5
<10
23
5
<10
_
23
5
<10
24
5
<10
_
24
5
<10
25
51
<10
25
5
<10
26
5
<10
26
5
- <10
27
5
c10
_
_ 27
5
<10
281
5
<10
28
51
<10
29
5
<10
29
51
<10
I
I
I
I
1
_ffI
I
1
II -
12/22/99

TOXICANT ANALYSIS
Denton WWTP
12/22/99

TOXICANT ANALYSIS
DentonVVVYTP
av-
=io
4
0.1
<.2
4
5
<10
12
0.1
<.2
This standard is for phenolic compounds
tested to
461
l2/22/90

TOXICANT ANALYSIS
Denton WWTP
ameter= I Cu I Parameter =1 Zn Pa
1/2 FA 7.3pg/I �Standard = I 67 pg/I E —
nBDL=1/2DLlctualDataRESULTS n3DL=1/2DNAclualDatal-
68 RESULTS _
1 97 97 Sid Dev. 35.144 1 68Std Dev. 189.59 _
2 21 21 Mean 32 2 71Mean 137.52 _
3 147 147 C.V. 1.0982 J 3 83C.V. ,.3786
4 4 4 4 385 12 125 67 J _
6 21 21 Mu/t Facto 3.7 II 6 49 49 _ Mult Facto 4.6 _'.
7 12 12 Max. Value,' 147 pgA 7 66 66 _ Max. Value 806 pg/I :
8 10 10 Max. Pred c 543.9 pgA 8 84 84 _Max. Pred 1, 3707.6 pg/I I
9 53 53 Allowable G 7.30 pg/II: 9 77 77 _ Allowable C� 67.00 p_g/I
10 8 8 10 52 52
11 27 27 11 43 43
12 13 13 12 137 137
13 33 33 13 541 541
14 17 17 C 14 120 120
151 13 13 15 69 69,:
161 21 _ 21 16 66 66
17 31 31� 171 59 59
18 78 78 18 56 56
19 21 21 19 64 64
20 24 24 20 272 272
211 91 9 21 806 806
I I I
I
I _
I
I
I
IF = -
I-
I I
12/22/99 5

TOXICANT ANALYSIS
Denton WWTP
meter=A9 (silver)
andard= 1.23
pg/I
_
n 3DL=1/2D
kctual Data
RESULTS
1
2.5
<5
Std Dev.
0
_
2
2.5
<5
Mean
2.5
_
3
2.5
<5
_
C.V.
0
_
4
2.5
<5
_
5
2.5
<5
_
_
61
2.5
<5
jMultFacto_
_
7
2.5
<5
1 Max. Value
2.5Ipg/
8
2.5
<5
1 Max. Pred
I_ 2.5
pg/
91
2.51
<5
I Allowable @
1.23
pg/
10
2.5
<5
11
2.5
<5
tF—
r
�r
L-
12/22/99

Cbwkv;.,
lama Tam Madmft PLn GWidmm
Appendix tea. FLmipk L'FMPSmmWWy Ueu Pam
Below Defection Limit Data (BDL) should be marked as "< and the detection limit", i.e. <0.002.
d VALUES +
AVPAAW
MAXIMUM
MIND"
��>�ra
lea+tl�
�■l�al�
Q��L1•
, ,
mom, raON
�
r�rm%>•
BDL DATA USED FOR AVERAGES ARE ESTIMATED TO BE: (i.e. 0, 112 DECEC CON 1WT, THE DEPE( RON LIIvM.
❑Wptw :LIMP CmWWm
F9lenra:: LTMP &M ra
RevieimDIM Sepk ba1.IM
C*W4
AppWii "
Pogo I
r
m
W
W
W
m
CD
Ln
LD
W
W
W

chvWN".
Lan$ Tram Madtaieb PI.n Gaid M
Appadui 4-B. Exwvlo LIMP SummaY D.0 Paim
t a I
10. I II' -Mi W
Below Detection Limit Data DL) should be marled as 'c and the detmtion limit", i.e. <0.001
f VALUES:
AVERAGE+
MAXIMUM 1
MINIMUM
Ala��li
■ Owxf
/.�
t/rR/a�
/ r
/ .
��e���■�•
r+fr/1/-�
I i
�-
ME=,
i9���liT�
• ,
• •
IJJ1l1•
�1Rlr�
IJRf}'�lr�lt��
1 r11
t�
I.M.
EWPMM
rim, M
■0Ri1�Ji��f�'
nsvffo�
Ma I
I r
iIRS=
M
NOW
��,
�Ml
1
BDL DATA USED FOR AVERAGES ARE ESTIMATED TO BE: Ox- 0, 12 DETECTION L AI T, THE DETECTION LD4M.
cbW'W LIMPOvi"M
T&m : LTMP dit mm
*cvWm Dw: Sepumba 1.1W3
Qupla 4
Appnwhx 4-B
Pn$e I
8

TOWN Of DENTON
P.O. BOX 306
DENrON NC 27239
P'hmo(336)859-4f60 — Fax [phone]
February 26, 1999
MR- CHARLES H. WEAVER, JR.
NC DENRlDWQ/NPDES
P.O BOX 29535
RALEIGH NC 27626-0535
Dear MR. WEAVER,
PLEASE FIND ENCLOSED THE WASTE TREATMENT RENEWAL APPLICATION
FOR THE TOWN OF DENTON, NPDES NC0026689. NO CHANGES HAVE BEEN MADE SINCE
THE LAST PERMIT WAS ISSUED. HOWEVER PLANS ARE TO INCLUDE EXPANSION IN
THE NEAR FUTURE. AUTHORIZATION TO CONSTRUCT HAS BEEN RECIEVED AND BIDS
GO OUT MARCH 1, 1999.
SLUDGE IS APPLIED TO THE DRYING BEDS, AND THEN THE DRYED BIOSOLIDS
ARE TRUCKED TO THE CITY OF LEXINGTON AS PART OF THE COMPOSTING PROGRAM.
NKY(U 7 [NCE
DENNARD
UPT. WATER&WASTE

• ..: :... Pry"
RAW SEWAGE
BAR RACKS
GRIT REMOVAL
FLOW METER
COMMINUTION �T) L,J BY-PASS SCREEN
RECIRCULATION �— RAW SEWAGE
AND WASTE SLUG E PUMP STATION
CONTROL
OXIDATION CHANNEL
SWDGE WITH DUAL HORIZ .
HOLDING OR VERT. MECHANICAL
AERATORS
SLUDGE
DRYING
BEDS
SECONDARY
CLARIFICATION
CHLORINE CONTACT
L ex rs-lo Q
Co p
P� og�arn POST AERAXIO14
SCHED ,WAS I'l WATLP FLui'j
TOWN .I '6iLH�. NWTQ Ire .
DENT �` NORTH CAROLtNp)l
DISCHARGE TO DISCHARG&'CtRfAL :NO.
1 1'T T!