NC0021407_Permit Issuance_20140812

NPDES DOCUMENT !MCANNINO COVER SHEET
NPDES Permit:
NC0021407
Highlands WWTP
Document Type:
Permit Issuance`
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
August 12, 2014
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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
August 12, 2014
Lamar Nix
Public Works Director
Town of Highlands
P. O. Box 460
Highlands, NC 28741
Subject: Issuance of NPDES Permit
Permit NC0021407
Highlands WWTP
Macon County
Class III
Dear Mr. Nix:
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached 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 October 15, 2007 (or as
subsequently amended).
Summary of Changes in Final Permit from Existing Permit
1) BOD, TSS, Fecal Coliform, pH, and Temperature monitoring frequency was corrected to
3/Week Total Nitrogen and Total Phosphorus monitoring frequency was corrected to
quarterly. Technical corrections were made to apply Class III monitoring frequency, rule 15A
NCAC 02B .0500.
2) Total Toluene monitoring was removed from this permit. There were no detects, thus no
potential to violate WQS. Monitoring to continue in Effluent Pollutant Scan.
3) Total Copper and Total Zinc monitoring was reduced to quarterly in conjunction with chronic
toxicity test. Total Copper and Total Zinc are action level toxicants and have the potential to
exceed their WQS. The facility has an excellent toxicity performance history so monitoring
frequency is required in conjunction with the chronic toxicity test.
4) Cyanide quarterly monitoring was added Cyanide has reasonable potential to exceed its WQS
based on a limited amount of data. Quarterly monitoring was added to collect sufficient data for
re-evaluation at the next renewal.
5) Total Mercury quarterly monitoring using Method 1631E was added. The US EPA approved
state-wide Mercury TMDL was applied. For clarity Method 1631E was listed in the Effluent
Pollutant Scan.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncwaterquality.org
An Equal opportunitylAffirmatve Action Employer

Lamar Nix, Public Works Director
July 24, 2014
Page 2 of 2
6) Special condition A. (3) Effluent Pollutant Scan seasonal monitoring requirement was revised to
require a total of three seasonal scans in designated years prior to the next permit renewal. In
addition, a new narrative was added alerting the Permittee to the four second species toxicity
tests requirements that must be completed prior to the next permit renewal. Narrative
corrections were made to apply US EPA permit renewal requirements for seasonal scans and
for second species toxicity testing.
7) A Special Condition and footnote for electronic reporting of DMRs with compliance to begin
no later than 270 days from the effective date of the final permit were added to this permit. The
US EPA guidance on electronic reporting was implemented.
8) Supplement to Permit Cover Sheet component list and Chronic Toxicity Pass/Fail Permit Limit
narratives were updated. Technical corrections to update narratives and information..
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 (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless
such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
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 Resources
or permits required by the Division of Land Resources, the Coastal Area Management Act or any other
federal or local governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Berry at telephone
number [phone] or at email [e-mail].
Sincerely,
Thomas A. Reeder, Director
Division of Water Resources, NCDENR
Attachments
Cc: Asheville Regional Office/Water Quality Programs
EPA Region IV (email)
Email: [e-mail]
WSS/Aquatic Toxicology Branch/Susan Meadows (email)
Central Files
NPDES File

Permit NC0021407
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
. and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Town of Highlands
is hereby authorized to discharge wastewater from a facility located at the
Highlands WWTP
Below Lake Sequoyah Dam west of Highlands
Macon County
to receiving waters designated as the Cullasaja River in the Little Tennessee River Basin in accordance
with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV
hereof.
This permit shall become effective September 1, 2014.
This permit and authorization to discharge shall expire at midnight on August 31, 2019.
Signed this day August 12, 2014.
614 omas A. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 9

Permit NC0021407
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements, terms, and provisions included herein.
The Town of Highlands
is hereby authorized to:
I. Continue to operate a 1.50 MGD dual -path domestic wastewater treatment plant that includes the
following components:
> Influent screen system
> Influent composite sampler
> Two (2) 0.79 MGD sequencing batch reactor tanks, each with 25 HP floating mixers, gravity
decanters, 3.0 HP sludge wasting pumps, and control valuing
> Two (2) 100 HP blowers with fine bubble diffusers and motorized inlet valves
> Two (2) post equalization basins, one 0.22 MG with blower and transfer pumps, one 0.08
MG interconnected to 0.22 MG basin
> Two (2) parallel tertiary filter systems
> Two (2) in series UV disinfection systems
> Effluent composite sampler
> Effluent ultrasonic flow meter system
> Effluent cascade aerator
> Two (2) 0.22 MG sludge digestors systems with pumps, one with aeration capability
> One (1) 0.08 MG sludge holding basin with blower and pump
> Polymer addition system
> Sludge vacuum drying bed
> Sludge belt press
> Internal recycle pump station
> Standby generator
This facility is located west of Highlands at the Highlands WWTP below Lake Sequoyah Dam in
Macon County.
2. Discharge wastewater from said treatment works at the location specified on the attached map into
the Cullasaja River, classified Class B-Trout waters in the Little Tennessee River Basin.
Page 2 of 9

Permit NC0021407
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
a. During the period beginning upon issuance of this final permit and lasting until expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and
monitored 1 by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location 2
Flow
1.50 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-day, 20°C 3
30.0 mg/L
45.0 mg/L
3/Week
Composite
went and
Effluent
Total Suspended Solids 3
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent and
Effluent
Fecal Coliform
(geometric mean)
200/100
ml
400/100
ml
3/Week
Grab
Effluent
Fecal Coliform
(geometric mean)
Weekly
Grab
Upstream &
Downstream
PH =
Not less than 6.0 S.U. nor greater
than 9.0 S.U.
3/Week
Grab
Effluent
Temperature, °C •
3/Week
Grab
Effluent
Temperature, °C
Weekly
Grab
Upstream &
Downstream
NH3 as N
(April 1— October 31)
3.4 mg/L
10.2 mg/L
Weekly
Composite
Effluent
NH3 as N
(November 1- March 31)
6.9 mg/L
20.7 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen
Not less than 5.0 mg/L, daily
average
Weekly
Grab
Effluent
Dissolve Oxygen, mg/L
Weekly
Grab
Upstream &
Downstream
Total Copper, µg/L 4
Quarterly
Composite
Effluent
Cyanide, µg/L
Quarterly
Grab
Effluent
Total Mercury, ng/L
(Method 1631 E)
Quarterly
Grab
Effluent
Total Zinc, µg/L 4
Quarterly
Composite
Effluent
Total Nitrogen (TN), mg/L 5
Quarterly
Composite
Effluent
Total Phosphorus, mg/L
Quarterly
Composite
Effluent
Chronic Toxicity 6
Quarterly
Composite
Effluent
Effluent Pollutant Scan
See Footnote 7
Effluent
Footnotes:
1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A.(4).
2. Upstream - upstream of the outfall, but below the dam. Downstream — downstream at the nearest
accessible site below the outfall.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed
15 % of the respective influent value (85 % removal).
Page 3 of 9

Permit NC002 1407
(Continued A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)
4. Total Copper and Total Zinc. to be sampled in conjunction with quarterly toxicity test.
5. TN = TKN + NO3 N + NOZ N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen,
and NO3-N + NO2-N are Nitrate and Nitrite Nitrogen respectively.
6. Chronic Toxicity (Ceriodaphnia dubia) P/F at 24%: March, June, September, and December.
See Special Condition A.(2).
7. See Condition A.(3) for details regarding the annual Effluent Pollutant Scan requirement and
second species toxicity testing requirement.
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 24%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised- December 2010) or subsequent versions. The tests will be performed during the months of
March, June, September, and December. These months signify the first month of each three month
toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained
during representative effluent discharge and shall be performed at the NPDES permitted final effluent
discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-
3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
Page 4 of 9

Permit NC0021407
(Continued A. (2) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY))
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring
will be required during the following month. Assessment of toxicity compliance is based on the toxicity
testing quarter, which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
Page 5 of 9

Permit NC0021407
A. (3) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One
scan must be performed in each of the following years: 2017, 2018, and 2019. Analytical methods shall be in
accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are
present in concentrations greater than applicable standards and criteria. Samples should be collected with one
quarterly toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same quarter
every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Chlorine, total residual (TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631 E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile Organic Compounds
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1, 1-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1, 1,1 -trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable Compounds
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral Compounds
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
• 4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-n itrosod i-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported on DWR Form -A MR-PPA1 (or in a form approved by the Director) by
December 31st of each designated sampling year. The report shall be submitted to the following address:
NC DENR / DWR / Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Page 6 of 9

Permit NC0021407
(Continued A.(3) EFFLUENT POLLUTANT SCAN)
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional
toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5). The US EPA requires four (4)
toxicity tests for a test organism other than the test species currently required in this permit. The multiple species
tests should be conducted either quarterly for a 12-month period prior to submittal of the permit renewal
application, or four tests performed at least annually in the four and one half year period prior to the application.
These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. The multiple
species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail. Service Center
Raleigh, North Carolina 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional
toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting
Unit.
•
A. (4) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)]
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Page 7 of 9

Permit NC0021407
(Continued A. (4) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
If a permittee is unable 'to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"1 certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the information,
the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. 1
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
Page 8 of 9

Permit NC0021407
(Continued A. (4) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
3. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
Page 9 of 9

USGS Quad: G6SW Highlands, NC
Outfall Facility
Latitude: 35° 4' 3" N 35° 3' 56.3" N
Longitude: 83° 13' 31" W 83° 13' 35.6" W
Stream Class: B, Tr
Subbasin: 04-04-01 HUC: 06010202
Receiving Stream: Cullasaja River
North
Facility Location
Highlands WWTP NC0021407
Macon County

DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NC0021407
Facility Information
Applicant/Facility
Name:
Town of Highlands/Highlands WWTP
Applicant Address:
P. O. Box 460; Highlands, NC 28741
Facility Address:
1184 Arnold Road; Highlands, NC 28741
Permitted Flow:
1.5 MGD t
Type of Waste:
100% Domestic
Facility/Permit Status:
Class III /Active; Renewal
County:
Macon County
Miscellaneous
Receiving Stream:
Cullasaja River
Stream Classification:
B, Tr
Subbasin:
04-04-01
Index No.:
2-21-(5.5)
Drainage Area (mi2):
14.4
HUC:
06010202
Summer 7Q10 (cfs):
7.2
303(d) Listed?:
No
Winter 7Q10 (cfs):
7.45
Regional Office:
Asheville
30Q2 (cfs):
14
State Grid / USGS
Quad:
G6SW
Highlands, NC
Ron Berry
Average Flow (cfs):
50
Permit Writer:
IWC (%):
24%
Date:
8/4/14
BACKGROUND
The Town of Highlands operates a Class III 1.5 MGD regional wastewater treatment facility that
serves the greater Highlands area and discharges treated 100% domestic wastewater to Cullasaja
River, a class B, Tr water in the Little Tennessee River Basin.
Currently, limited parameters are monitored weekly, nutrient parameters monitored semi-
annually, and instream parameters monitored weekly year round. Rule 15 NCAC 02B .0508
requires Class III facilities to have monitoring frequencies of 3/week for limited parameters and
quarterly for nutrient parameters.
To protect the instream DO water quality standard of 6.0 mg/L as predicted by a Level B Model,
the effluent was assigned a DO minimum daily average limit of 5.0 mg/L. In addition,
upstream/downstream monitoring was assigned for Temperature and DO to validate compliance
with the instream DO water quality standard. As a B class stream, upstream/downstream
monitoring for Fecal Coliform was also required.
2008 — Renewal permit issued with following changes from previous permit:
1) Removed TRC requirements. The facility is using UV for disinfection.
2) Removed Total Silver requirements. Historical data showed no detects.
3) Removed Toluene limit and reduced monitoring to 2/Month. The historical data showed
no detects in recent years.
4) Reduced Total Copper Monitoring to 2/Month, action level toxicant. Facility consistently
passed its toxicity test.
5) Removed 0.50 MGD effluent limitation page, no longer applicable. Commenced
expanded operation to 1.5 MGD in 2007.
2012 - NOV issued for exceedance of NH3-N limit in May 2011
Fact Sheet
NPDES NC0021407
Page 1 of 4

PROCESS
Domestic wastewater is introduced via a 12 inch forced main into the headworks which consist
of a mechanical screen system. Wastewater from the headworks is directed to fill a Sequencing
Batch Reactor (SBR), treated, and decanted to the equalization basin. There are two SBR tanks
available to sustain continuous operation. A pump transfers the equalization basin wastewater
through the tertiary filters. Filtered wastewater then flows through the UV system, the effluent
flow meter, cascade aerator, and into the Cullasaja River.
The SBR sludge is pumped to the aerobic digestors. After additional treatment the aerobic sludge
is pumped to the sludge holding basin for further thickening and then dewater by a filter belt
press. The solids are transported to an approved landfill. An internal drain system collects and
pumps wastewater from the tertiary filters, the belt press, and other sources back to the
headworks. Blowers provide air to the SBR, aerobic digestors, and equalization basin.
COMPLIANCE
Since 2008 the facility had one event in May 2011 that resulted in violations of NH3-N limits. A
fine of $387 was assessed and paid by the Permittee. The facility is considered to have a good
compliance history.
DATA REVIEW
DMRs were reviewed for the period of October 2011 to November 2013. Effluent DMR data is
summarized in Table I below:
Table I: Effluent Data Summ
Flow*
(MGD)
BOD*
(mg/L)
TSS*
(mg/L)
NH3-N*
(mg/L)
*Fecal
Cohform
(#//100 ml)
pH
(S.U.)
Dissolved
Oxygen
(mg/L)
Average
0.223
3.12
6.86
0.40
4.34
6.84
8.26
Maximum
0.42
8.4
9.4
2.7
9.2
9.5
11.7
Minimum
0.16
< 2
4.5
< 0.1
3.0
6.0
5.4
* based on monthly average
Percent Removal: Based on BOD 97.2% - 99.3%, based on TSS 93.6% - 99.3%
Nutrient Monitoring
Total Nitrogen (TN) and Total Phosphorus (TP) semi-annual monitoring were conducted. The
range of reported data from 2008 through 2013 is:
TN Data Range: 2.6 mg/L to 9.0 mg/L
TP Data Range: 0.3 mg/L to 4.7 mg/L
Whole Effluent Toxicity
The permit requires quarterly chronic toxicity testing as a chronic toxicity limit using
ceriodaphnia dubia, at 24% effluent concentration. The facility passed all its 22 toxicity tests
submitted since June 2008. Four second species chronic toxicity tests, using fathead minnow,
were submitted with the renewal application. All second species chronic toxicity test were
passed.
Priority Pollutant Analysis (PPA)
The results of 4 PPAs were submitted with the permit renewal application. Detected levels of
Total Copper, Cyanide, Total Phenolic Compounds, Total Mercury, and Total Zinc were
reported.
Fact Sheet
NPDES NC0021407
Page 2 of 4

Instream Data
Weekly monitoring for Temperature, Dissolved Oxygen, and Fecal Coliform monitoring
upstream and downstream were conducted. DMRs were reviewed for the period of October 2011
to November 2013. DMR instream data is summarized in Table II below:
Table II: Instream Data Summ
Parameter
Maximum
Minimum
Impacted
by
dscharge
i
Effluent
Upstream
Downstream
Effluent
Upstream
Downstream
Temperature, °C
22.9
23
23
6.5
4.2
4.2
No issue
Fecal Coliform, #/100 ml
30
1200
1200
,
< 4
< 3
< 3
No issue
Dissolved Oxygen, mg/L
11.7
10.8
10.8
5.5
6.1
6.1
Compliant
PERMITTING STRATEGY
Reasonable Potential Analysis (RPA)
The Division conducted EPA -recommended reasonable potential analyses for detected toxicants
discharged by this facility, based on DMR data from October 2011 to November 2013 and from
the 4 PPAs submitted with the renewal application. Evaluations were conducted for Total
Copper, Cyanide, Total Phenolic Compounds, and Total Zinc.
In accordance with guidelines for determining requirements based on RPA or no detects:
1) Total Copper and Total Zinc monitoring will be reduced to quarterly in conjunction with
toxicity.` As action level parameters the facility toxicity test history is considered. The
facility has consistently passed its Toxicity Test. Total Copper had reported values in
excess of its Water Quality -Based Limit (WQBEL). Total Zinc had reasonable potential
to exceed its WQBEL. But with the facility passing its Toxicity Test, Total Copper and
Total Zinc are to be monitored in conjunction with the toxicity test.
2) Cyanide quarterly monitoring will be added. This was a limited data set with no reported
values in excess of its WQBEL but with reasonable potential to exceed its WQBEL.
Cyanide monitoring will be conducted to collect data for evaluation at the next renewal.
3) Toluene monitoring will be removed. All reported values were no detects and are less
than values than the WQBEL. Note monitoring will continue in PPA.
4) No requirements to be added for Total Phenolic Compounds. There was no reasonable
potential for Total Phenolic Compounds to exceed its WQBEL and predicted values are
less than 50% of the WQBEL value. Note monitoring will continue in PPA.
Mercury TMDL
A Mercury TMDL was approved by US EPA in October 2012. There was insufficient Mercury
data to evaluate this facility per the TMDL, and the permitted flow was less than 2 MGD.
Therefore, quarterly monitoring for Mercury using Method 1631E will be added to this permit
and evaluated at the next renewal. For consistency the PPA will be amended to require Method
1631E for measuring Mercury.
Electronics DMR Reporting
A special condition and footnote on electronic DMR reporting will be added to comply with US
EPA guidance and require compliance no more than 270 days from the final permit effective
date.
Corrections and Revisions
1) Technical corrections will be made to apply Class III monitoring frequencies for effluent
limited parameters and effluent monitored nutrients. The chronic toxicity special
condition narrative and component list narrative will be updated.
Fact Sheet
NPDES NC0021407
Page 3 of 4

2) The PPA annual monitoring frequency will be revised to 3 annual, seasonal PPA in years
closest to submittal of next permit renewal application to comply with US EPA
requirements. The revised PPA special condition will be updated to include a narrative
for second species testing.
SUMMARY OF REQUIREMENTS
Receiving Stream: Cullasaje River Class:
B, Tr
Treated 100% domestic from Highlands WWTP, Permitted for 1.5 MGD
Treatment: Headworks, SBR, EQ basin, tertiary filters, UV
Parameters (UOM as noted)
Limits
Bases of Permit Limit
BOD, mg/L
30.0 monthly avg
45.0 weekly avg
40 CFR 133.102
TSS, mg/L
30.0 monthly avg
45.0 weekly avg
40 CFR 133.102
BOD & TSS
85% removal
40 CFR 133.102
NH3-N, mg/L
(summer)
3.4 monthly avg
10.2 weekly avg
NCDENR NH3-N toxicity guidance
(winter)
6.9 monthly avg
20.7 weekly avg
Fecal coliform, #/100 ml
(geometric mean)
200 monthly avg
400 weekly avg
WQ
pH, S.U.
6.0 — 9.0
40 CFR 133.102
DO, mg/L
5.0 daily avg minimum
WQ
Chronic toxicity, P/F
P/F quarterly, 24% concentration
NCDENR toxicity strategy, WQ
Comments/Changes
and effluent monitored nutrients were corrected to aligned with class III rule
was added using Method 163I E to collect data for evaluation at next renewal.
was reduced to 3 annual, seasonal submittals in adjacent years prior to next renewal.
amended to include narrative for second species testing.
quarterly monitoring were added.
was removed.
was reduced to quarterly.
of DMRs special condition was added with compliance no later than 270 days from new
1) Effluent limited parameters
requirements.
2) Mercury quarterly monitoring
3) PPA reports frequency
PPA special condition
4) Total Zinc and Cyanide
5) Toluene monitoring
6) Total Copper monitoring
7) Electronic reporting
permit effective date.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: May 21, 2014
Permit Scheduled to Issue: August 2014
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Berrt (919) 7-6396 or email ron.berry@ndeprv.
r/ NAME: /�y,� DATE: A74.
REGIONAL OFFICE COMMENTS
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NC0021407
Page 4 of 4

Public NoHee
North Carolina
Environmental
Management
Commission/NPDES
Unit
1617 Mall Service
Center
Raleigh, NC 27699.1617
Notice of Intent to Issue
a NPDES Wastewater
Permit
The North Carolina En-
vironmental Manage-
ment Commission pro-
poses to issue a NPDES
wastewater discharge
permit to the person(s)
listed below. Written
comments regarding
the proposed permit
will be accept d until
30 days after the pub-
lish date of this notice.
The Director of the NC
Division of Water Re-
sources (PWR) may
hold a public hearing
should thereree eof a sigg-
nificant degpub-
lic interest. Please mail
comments and/or in-
formation requests to
DWR at the above ad-
dress. Interested per-
sons may visit the DWR
at 512 N. Salisbury
Street, Raleigh, NC to
review informstlon on
file. Addltlonal informa-
tion on NPDES permits
and this notice may be
found on our website:
http://pportal, nc d enr.or
eslend/rwogp/nca
if9 919) a$0763bTw
ln-
onHighland s.req.ested
renewal of NC0u21407
for its WWTP in Macon
County; this permitted
discharge is for treated
domestic wastewater
to the Cullasala River,
Little Tennessee River
Basin.
(2221May 23), 2014
ALE
CITIZSHEVIEN TIMES
VOICE OF THE MOUNTAINS • CITIZEN-TIMES.com
AFFIDAVIT OF PUBLICATION
BUNCOMBE COUNTY
SS.
NORTH CAROLINA
Before the undersigned, a Notary Public of said County and
State, duly commissioned, qualified and authorized by law
to administer oaths, personally appeared Rene Simpson,
who, being first duly sworn, deposes and says: that she is
the Finance Manager of The Asheville Citizen -Times,
engaged in publication of a newspaper known as The
Asheville Citizen -Times, published, issued, and entered as
first class mail in the City of Asheville, in said County and
State; that she 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 Asheville Citizen -Times on the
following date: May 23rd 2014. And that the said
newspaper in which said 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 Statues of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the
General Statutes of North Carolina.
Signed this 23rd day of May, 2014
(Sigature of person mdfiing,affidavit)
Sworn to and subscribed before me the 23rd day of May,
2014.
ailk-
(Y�otary Publ c) d aacJ�,0i7Stio, av
My Co ission expires the 5th day of October, 2018. /Q"\`�' - .A'°ro.,
[phone] I [phone] FAX
14 O. HENRY AVE. 1 P.O. BOX 2090 I ASHEVILLE, NC 28802 I [phone]
c) GANarr

Highlands WWTP
NC0021407
2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
Qw (MGD) = 1.50
l Q 1 OS (cfs) = 5.99
7Q I OS (cfs) = 7.20
7Q1OW (cfs)= 7.45
30Q2 (cfs) = 14.00
Avg. Stream Flow, QA (cfs) = 20.00
Receiving Stream: Cullasaja River
WWTP/WTP Class: 111
IWC r(�t, 1 Ql OS = 27.961515%
IWC cr 7Q10S = 24.409449%
IWC c(Q 7Q1OW = 23.785166%
IWC ct 30Q2 = 14.241960%
IWC cQ QA = 10.414334%
Stream Class: B, Tr
Outfall 001
Qw=1.5MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
-J
a
m
1...
Z
=
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied V2 FAV /
Chronic Standard Acute
n # Det. Max Pred
Allowable Cw
Cw
.
Arsenic
Arsenic
C
C
50 FW(7Q1Os)
10 HH/WS(Qavg)
ug/L
ug/L
0 0
0 0
N/A
N/A
Acute: NO WQS
___ _•___-___ _____-_-_-_-_-_-_-_-_-___-_-_-_
Chronic: 204.8
Chronic: 96.0
No detects
No detects
Beryllium
NC
6.5 FW(7QI0s)
ug/L
0 0
N/A
Acute: NO WQS
--_ _ _-_ ------ -___-_-_-_-_-_-_-_-_-_-_-_-_-_
Chronic: 26.6
No detects
Cadmium
NC
0.4 TR(7Q10s) 2.1
ug/L
0 0
N/A
Acute: 7.5
--_ __-_-_________-
Chronic: 1.6
No detects
-------- _-___-_-------- -_
No detects
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
4 2
Note: n < 9
Limitcd data set
23.8
Default C.V.
Acute: NO WQS
--_ _ _-_-_ _ _ _-_-_-_-_-_-_-_-_-_-___-_-_-_
Chronic: 2,106.5
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw-
Monitor in PPA scan
Chromium
NC
50 FW(7QI0s) 1022
ug/L
0 0
N/A
Acute: 3,655.0
--_ _ _-_-_ ___-_
Chronic: 204.8
No detects
------- _-_-_---- --- _-_ --- _
No detects
Copper (AL)
NC
7 FW(7Q10s) 7.3
ug/L
56 56
121.2
Acute: 26.1
- - _ _ _ - _ _ _ - _ _ - _ -
Chronic: 28.7
52 value(s) > Allowable Cw
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test_ - _ - _ - _
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
4 2
Note: n <_ 9
Limited data set
25.9
Default C.V.
Acute: 78.7
--_ _-_-_-_
Chronic: 20.5
No value > Allowable Cw
RP for Limited Dataset (n<8 samples) - apply
Quarterly Monitoring -_-_-_-_-_-_-_-_
RP for Limited Dataset (n<8 samples) - apply
Quarterly Monitoring
Lead
NC
25 FW(7QIOs) 33.8
ug/L
0 0
N/A
Acute: 120.9
___ _ _ --------- _
Chronic: 102.4
No detects
---- _-_-------- _-_-_-_-_-_
No detects
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
-_ _ ___-___ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
Chronic: 49.2
Invalid data, monitor quarterly Method 1631e to
collect data for TMDL at next renewal
Page 1 of 2
9595 FRESHWATER RPA2014 2.xism, rpa
8/4/2014

Highlands WWTP
NC0021407
2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
Outfall 001
Qw=1.5MGD
Nickel
NC
88 FW(7Q10s) 261
ug/L
0 0
N/A
Acute: 933.4
_ _ _ -----_ _ ---_
-- Chronic: 360.5Nodeteds
No detects •
_ ---•---•---•---------
Selenium
NC
5 FW(7Q10s) 56
ug/L
0 0
N/A
Acute: 200.3
-- _ _----- _------------------------------
Chronic: 20.5
No detects
No detects
Silver (AL)
NC
0.06 FW(7Q10s) 1.23
ug/L
0 0
N/A
Acute: 4.399
-- _ _ _ _ _
Chronic:-----0.246
No detects
_ _ •---------------
No detects
Zinc (AL)
NC
50 FW(7Q10s) 67
ug/L
4 4
Note: n < 9
Limited data set
290.1
Default C.V.
Acute: 239.6
Chronic: 204.8 -
No value > Allowable Cw
RP forAL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring In conjunction with TOX Test
Toluene
NC
0.36 TR(7Q10s)
µg/L
0 0
N/A
Acute: NO WQS
_ _ _ _ ---- _ _ _ _
Chronic: 1.47484
_ _ _ -----•—•-------------
No detects
Page 2 of 2
9595 FRESHWATER RPA2014_2.xlsm, rpa
8/4/2014

REASONABLE POTENTIAL ANALYSIS
7
Total Phenolic Compounds
Date Data BDL=1/2DL Results
1 6/30/2009 < 10 5 Std Dev.
2 5/25/2010 < 10 5 Mean
3 12/19/2011 7.1 7.1 C.V. (default)
4 6/27/2012 9.2 9.2 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"
. Maximum data
points = 58
9
Copper (AL)
2.0106
6.5750
0.6000
4
2.59
9.2 ug/L
23.8 ug/L
Date Data BDL=1/2DL Results
1 6/30/2009 7.8 7.8 Std Dev.
2 5/25/2010 9.5 9.5 Mean
3 12/13/2011 10.2 10.2 C.V.
4 6/27/2012 5.5 5.5 n
5 10/4/2011 50 50
6 10/18/2011 50 50 Mult Factor =
7 11/8/2011 50 50 Max. Value
8 11/15/2011 50 50 Max. Pred Cw
9 12/13/2011 50 50
10 12/20/2011 50 50
11 1/10/2012 50 50
12 1/31/2012 50 50
13 2/7/2012 50 50
14 2/15/2012 50 50
15 3/6/2012 50 50
16 3/20/2012 50 50
17 4/3/2012 50 50
18 4/24/2012 50 50
19 5/15/2012 50 50
20 5/22/2012 50 50
21 6/5/2012 50 50
22 6/12/2012 50 50
23 7/10/2012 50 50
24 7/24/2012 50 50
25 8/14/2012 50 50
26 8/28/2012 50 50
27 9/11/2012 50 50
28 9/25/2012 50 50
29 10/9/2012 50 50
30 10/23/2012 50 50
31 11/6/2012 50 50
32 11/20/2012 50 50
33 12/4/2012 50 50
34 12/19/2012 50 50
35 1/8/2013 50 50
36 1/22/2013 50 50
37 2/12/2013 50 50
38 2/26/2013 50 50
39 3/12/2013 50 50
40 3/19/2013 50 50
41 4/9/2013 50 50
42 4/23/2013 120 120
43 5/21/2013 50 50
44 5/28/2013 50 50
45 6/21/2013 50 50
46 6/25/2013 50 50
47 7/18/2013 50 50
48 7/30/2013 50 50
49 8/20/2013 50 50
50 8/27/2013 50 50
51 9/10/2013 50 50
52 9/24/2013 50 50
53 10/8/2013 50 50
54 10/22/2013 50 50
55 11/12/2013 50 50
56 11/26/2013 50 50
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
14.5960
48.2679
0.3024
56
1.01
120.0 ug/L
121.2 ug/L
9595 FRESHWATER RPA2014_2.xlsm, data
- 2 - 5/19/2014

REASONABLE POTENTIAL ANALYSIS
10
Cyanide
Date Data BDL=1/2DL Results
1 6/30/2009 < 1 5 Std Dev.
2 5/25/2010 < 1 5 Mean
3 12/13/2011 8 5 C.V. (default)
4 6/27/2012 10 10 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"
. Maximum data
points = 58
18
Zinc (AL)
Date Data BDL=1/2DL Results
2.5000 1 6/30/2009 112 112 Std Dev.
6.25 2 5/25/2010 79.2 79.2 Mean
0.6000 3 12/13/2011 82.1 82.1 C.V. (default)
4 4 6/27/2012 102 102 n
5
2.59 6 Mult Factor =
10.0 ug/L 7 Max. Value
25.9 ug/L 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
15.7959
93.8250
0.6000
4
2.59
112.0 ug/L
290.1 ug/L
-3-
9595 FRESHWATER RPA2014_2.xism, data
5/19/2014

8/4/2014
Highlands 11WUTP
NC0021407
Prepared By: RDB
IWC Based Calculations
Assume upstream TRC level = 0
Assume upstream Fecal level = 0
Check Box if WTP Facility El
0 Data/comment entry
= Results
Check Box if SW El
Enter Design Flow (MGD):
Enter s7Q10(cfs):
Enter w7Q10 (cfs):
1.500
7.200
7.450
Enter Upstream NH3-N Level (mg/L):
0.220
Total Residual Chlorine Toxicity Requirment
Total Residual Chlorine (TRC)
s7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
7.200
1.5
2.325
STREAM WQS (pg/L)
17
UPS BACKGROUND LEVEL (I
IWC (%)
Allowable Conc. (pg/L)
Ammonia NitrogenToxicity Requirment
Ammonia Nitrogen (NH3-N)
Summer
s7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
7.200
1.5
2.325
Limit MAX
35.0 mg/L
STREAM WQS (mg/L)
1.0
0 UPSTREAM LEVEL (mg/L)
24.41 IWC (%) Summer
28 Allowable Conc. (mg/L)*
WEEKLY AVG LIMIT (mg/L)
Secondary Treatment Requirement
(#/100 ml - MONTHLY/DAILY)
Fecal Coliform Limits
(If DF >331; Monitor)
(If DF <331; Limit)
Dilution Factor (DF)
200/400
Ammonia Nitrogen (NH3-N)
Winter
w7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
0.220
24.41
3.4
10.2
7.450
1.5
2.325
NON-POTW
3.4
17.0
(MONTHLY/DAILY)
Limit MAX
35.0 mg/L
STREAM WQS (mg/L)
1.8
4.10 UPSTREAM LEVEL (mg/L)
IWC (%) Winter
Allowable Conc. (mg/L)*
WEEKLY AVG LIMIT (mg/L)
* MONTHLY AVG LIMIT
Check other limit docs such as basin plan or model
0.220
23.79
6.9
20.7
NON-POTW
6.9
34.5
(MONTHLY/DAILY)
8/4/2014

Highlands WWTP- B,Tr
2007 moved to 1.5 MGD tier, 2008 renewal removed 0.5 MGD tier not used, maximum annual avg flow
since 2006 0.24 MGD in 2013 and only 2 monthly avg flows above 0.4 MGD (but not above 0.5 MGD),
checked ATC activity still has open/active 2004 ATC for expansion to 1.5 MGD and BIMS only shows
partial Engineer's Certificate received 2006.
Did not apply Class III monitoring requirements in 1.5 MGD tier reason unknown, 2002 model for WLA
speculative limits no problem meeting secondary standards with NH3 toxicity limits and DO of 5 mg/L at
1.5 MGD. Need to make corrections:
BOD, TSS, pH, fecal coliform , temperature go from weeklylto 3/week
DO, is WQS goes from weekly' to 3/week and minimum daily limit2 increase to 6.0 mg/L
- NH3-N stay weekly'
Instream fecal coliform, temperature, DO stay weekly' BPJ do not change? Is this ok with
fecal coliform since B class stream?
Monitoring (no limits):
- Total copper, reduce to quarterly per RPA3 rules
- Total cyanide and Total zinc, add quarterly per RPA3 rules
Footnote:
1. Class II, permitted flow 0.5 MGD or less, instream monitoring is sufficient
2. Trout DO WQS is 6 mg/L, C class WQS DO is 5 mg/L
3. RPA guidance sets action level and minimum data monitoring requirements
Met with Tom, online conference with ARO, will make technical corrections

LEVEL B MODEL INFORMATION
;: ": Facility Information = ..
;:" Flow Information.- .;. .
Facility Name:
Highlands WWTP
Topo Quad:
G6SW (Highlands NC
NPDES No.:
NC0021407
USGS sta. #:
Type of wastewater
domestic
Date of flow estimate:
1992 0.5 MGD Model
Facility status:
renewal
Drainage Area (mi2):
14.4
Receiving stream:
Cullasaja River
Summer7Q10 (cfs):
7.2
Stream class:
B - Trout
Winter7Q10 (cfs):
7.45
Subbasin:
04-04-01
Average flow (cfs):
50
County:
Macon
30Q2 (cfs):
14
Regional Office:
Asheville
IWC at discharge (%):
24.4%
Select Season:
SUMMER
,' , ., :.. NH3-N TOXICITY:MAXIMUM:-';°t 3:42,::.mg/ln:
•
Segment/Reach
1
2
3
4
Length of reach (mi)
0.3
0.6
Incremental length
0.05
0.05
Waste characteristics
WWTP name
Highlands WWTP
Flow (MGD)
1.5
BOD (mg/1)
30
BOD Multiplier
1.5
CBOD
45
NH3-N (mg/I)
3.4
NH3-N multiplier
4.5
NBOD
15.3
DO (mg/I)
5
Runoff charactericstics
s7Q10 (cfs/mi)
0.2
0.2
QA (cfs/mi)
1.5
1.5
CBOD (mg/I)
2
2
2
2
NBOD (mg/I)
1
1
1
1
DO (mg/l)
7.72
7.72
Tributary characteristics
Tributary name
s7Q10 (cfs/mi)
QA (cfs/mi)
CBOD (mg/I)
2
2
2
2
NBOD (mg/l)
1
1
1
1
DO (mg/1)
Slope
352
62
Headwaters/Reach Set Up Input
(A) Number of reaches
'�
_, ` ,,
' > t;- : ::.-
- _:
9 -3 'x '''`
: - '- '' - "''
=L_ ''=` `°-4, -x `'
._r�:
(B) Number of segments combined upstream (defaults to zero)
(C) Number of segments combined upstream (defaults to zero)
(D) Number of segments combined upstream (defaults to zero)
(E) Upstream, Tributary, Downstream (defaults to U)
(F) 7Q10 flow at the upstream boundary
(G) Background CBOD (mg/I) (defaults to input value)
(H) Background NBOD (mg/I) (defaults to input value)
(I) Background DO (mg/I) @ 90% saturation (defaults to input value)
(J) Average flow at the beginning of upstream boundary
Other
Estimated QA runoff flow factor
Used NPDES Permit Limits for BOD and NH3-N
Used stream flows as listed in 2004 fact sheet and 2002 spec letter
Used Highlands 1992 Model for segment lengths and slopes
•
File name:
HIGH1_5.DT2 (SUMMER)

I Seg # I Reach # I Seg Mi I D.O. I CBOD
1 1 0.00 7.06 12.50
1 1 0.05 7.25 12.44
1 1 0.10 7.42 12.39
1 1 0.15 7.56 12.34
1 1 0.20 7.68 12.29
1 1 0.25 7.78 12.24
1 1 0.30 7.86 12.19
1 2 0.30 7.86 12.19
1 2 0.35 7.99 12.14
1 2 0.40 8.09 12.09
1 2 0.45 8.17 12.04
1 2 0.50 8.22 11.99
1 2 0.55 8.27 11.94
1 2 0.60 8.30 11.89
1 2 0.65 8.32 11.84
1 2 0.70 8.34 11.80
1 2 0.75 8.35 11.75
1 2 0.80 8.37 11.70
1 2 0.85 8.37 11.65
1 2 0.90 8.38 11.61
I Seg # I Reach # I Seg Mi I D.O. I CBOD
I
I
SUMMER
1.5 MGD HIGHLANDS WWTP
RENEWAL 5.0 MG/L EFFLUENT
NBOD I Flow I
4.49 9.53
4.48 9.54
4.46 9.54
4.45 9.55
4.44 9.56
4.43 9.57
4.41 9.58
4.41 9.58
4.40 9.59
4.38 9.60
4.36 9.61
4.34 9.62
4.32 9.63
4.30 9.64
4.29 9.65
4.27 9.66
4.25 9.67
4.23 9.68
4.22 9.69
4.20 9.70
NBOD I Flow I

• LEVEL I4 MODEL INFORMATION
_ = : ` ... Facility Information
Flow Information •
Facility Name:
Highlands WWTP
Topo Quad:
G6SW 'Highlands NC
NPDES No.:
NC0021407
USGS sta. #:
Type of wastewater
domestic
Date of flow estimate:
1992 0.5 MGD Model
Facility status:
renewal
Drainage Area (mi`):
14.4
Receiving stream:
Cullasaja River
Summer7Q10 (cfs):
7.2
Stream class:
B - Trout
Winter7Q10 (cfs):
7.45
Subbasin:
04-04-01
Average flow (cfs):
50
County:
Macon
30Q2 (cfs):
14
Regional Office:
Asheville
IWC at discharge (%):
24.4%
Select Season:
SUMMER
' f: ;. _ �: , . ,. NH3-NJOXICITY MAXIMUM:=::r _:3.42` . mg/1" ..
Segment/Reach
1
2
3
4
Length of reach (mi)
0.3
0.6
Incremental length
0.05
0.05
Waste characteristics
WWTP name
Highlands WWTP
Flow (MGD)
1.5
BOD ( mg/I)
30
BOD Multiplier
1.5
CBOD
45
NH3-N (mg/l)
3.4
NH3-N multiplier
4.5
NBOD
15.3
DO (mg/I)
0
Runoff charactericstics
s7Q10 (cfs/mi)
0.2
0.2
QA (cfs/mi)
1.5
1.5
CBOD (mg/I)
2
2
2
2
NBOD (mg/I)
1
1
1
1
DO (mg/I)
7.72
7.72
Tributary characteristics
Tributary name
s7Q10 (cfs/mi)
'
QA (cfs/mi)
CBOD (mg/I)
2
2
2
2
NBOD (mg/I)
1
1
1
1
DO (mg/I)
Slope
352
62
_
Headwaters/Reach Set Up Input
(A) Number of reaches
•- - ..' a;
, '' ' `'"' `'
` ;.":; ,, .;,;.-..,
` r , :. _ tur
= _ = '
' - `' -
,r ,fJ"� ,��" E�,
(B) Number of segments combined upstream (defaults to zero)
(C) Number of segments combined upstream (defaults to zero)
(D) Number of segments combined upstream (defaults to zero)
(E) Upstream, Tributary, Downstream (defaults to U)
(F) 7Q10 flow at the upstream boundary
(G) Background CBOD (mg/I) (defaults to input value)
(H) Background NBOD (mg/I) (defaults to input value)
(mg/I) m /I DO round Back 90% saturation (defaults to input value)
{) 9 )@
(J) Average flow at the beginning of upstream boundary
Other
Estimated QA runoff flow factor
Used NPDES Permit Limits for BOD and NH3-N
Used stream flows as listed in 2004 fact sheet and 2002 spec letter
Used Highlands 1992 Model for segment lengths and slopes
File name:
HIGH1_5.DT2 (SUMMER)

1
Seg #
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Seg
1
#I
Reach
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
Reach
# I Seg Mi
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
I
I D.O.
5.84
6.23
6.56
6.84
7.07
7.27
7.43
7.43
7.67
7.85
7.99
8.09
8.16
8.22
8.27
8.30
8.32
8.34
0.85 8.36
0.90 8.37
Seg Mi I D.O.
1
1
CBOD
12.50
12.44
12.39
12.34
12.29
12.24
12.19
12.19
12.14
12.09
12.04
11.99
11.94
11.89
11.84
11.80
11.75
11.70
11.65
11.61
CBOD
SUMMER
1.5 MGD
RENEWAL
I NBOD I
4.49
4.48
4.46
4.45
4.44
4.43
4.41
4.41
4.40
4.38
4.36
4.34
4.32
4.30
4.29
4.27
4.25
4.23
4.22
4.20
NBOD
I
I
HIGHLANDS WWTP
Flow I
9.53
9.54
9.54
9.55
9.56
9.57
9.58
9.58
9.59
9.60
9.61
9.62
9.63
9.64
9.65
9.66
9.67
9.68
9.69
9.70
Flow I

i.
MODEL RESULTS
Discharger : TOWN OF HIGHLANDS
Receiving Stream : CULLASAJA RIVER
SUMMER
1.5 MGD HIGHLANDS WWTP
RENEWAL
The End D.O. is 8.37 mg/l.
The End CBOD is 11.61 mg/1.
The End NBOD is 4.20 mg/l.
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/1) Milepoint Reach # (mg/1) (mg/1) (mg/1) (mgd)
Segment 1 5.84 0.00 1
Reach 1
Reach 2
45.00 15.30
0.00 0.00
0.00
0.00
1.50000
0.00000

•
*** MODEL SUMMARY DATA ***
Discharger
Receiving Stream .
Summer 7Q10
Design Temperature:
TOWN OF HIGHLANDS
CULLASAJA RIVER
7.2
23.0
Subbasin : 040401
Stream Class: B-TR
Winter 7Q10 : 7.45
LENGTH SLOPE VELOCITY I DEPTH Kd I Kd° Ka Ka KN
mile ft/mi fps ft design @20 design ®20° design
Segment 1
Reach 1
0.30
352.00
0.937
0.82
1.01
0.88
53.37
50.00
0.63
Segment 1
Reach 2
0.60
62.00
0.568
1.06
0.60
0.52
53.37
50.00
0.63
2
Waste
Headwaters
Tributary
* Runoff
Segment 1
Waste
Tributary
* Runoff
Flow I CBOD
cfs mg/1
Segment 1 Reach 1
2.325
7.200
0.000
0.200
Reach 2
0.000
0.000
0.200
45.000
2.000
2.000
2.000
0.000
2.000
2.000
* Runoff flow is in cfs/mile
NBOD D.O.
mg/1 I mg/1
15.300 0.000
1.000 7.720
1.000 7.720
1.000 7.720
0.000
1.000
1.000
0.000
7.720
7.720

EgEVA
KREg
-4a
STATE GRID/QUAD:
RECEIVING STREAM:
STREAM CLASS:
LATITUDE:
LONGITUDE:
DRAINAGE BASIN:
SUB —BASIN:
HIGHLANDS, N.C. — G 6 SW
CALLASAJA RIVER
B—TROUT
35' 04' 03" N
83'13'31"W
LITTLE TENNESSEE
04— 04— 01
i
GRAPHIC SCALE
1000 500 0 500 1000 2000
3000
1 "=2000'
PROJECT MANAGER DRAWING SCALE
BLT NTS
DRAWN BY
CADD
APPROVED BY
BLT
FILE NAME
70095.usgs.dw0
PROJECT DATE
4/07
PROJECT NUMBER
70095.00.HI
WK
DICKSON
community infrastructure consultants
401 4th STREET SW, SUITE 201
HICKORY, NC 28802
[phone]
Office Locations:
North Carolina
South Carolina
Georgia
Florida
NPDES PERMIT NC0021407
FOR THE
HIGHLANDS WWTP
HIGHLANDS, NORTH CAROLINA
J r- TOPOGRAPHIC MAP1/
3

f
DRAIN PUMP STA.
VALVE VAULT
BLOWER
x --
STORAGE —
BUILDING
V—NOTCH WEIR
GENERATOR AND
FUEL TANK
XCHAIN XLINK X CN t—X
SBR TANK
NO.
PROPERTY LINE
AEROBIC
DIGESiLie
NO. 2
SBR TANK
NO. 1
AEROBIC
DIGESTER
NO. 1
1
CONTROL AND
LAB BUILDING
1
PROJECT MANAGER DRAWING SCALE
BLT 1"=60'
DRAWN BY PROJECT DATE
CADD 4/07
APPROVED BY PROJECT NUMBER
BLT 70095.00.HI
FILE NAME
70095_wwtp site dwg
drDICKSON
community infrastructure consultants
401 4th STREET SW, SUITE 201 Th
HICKORY, NC 28602
[phone]
Office Locations:
North Carolina Georgia
South Carolina Florida
VALVE VAULT
VACUUM BED -
BELT PRESS
BUILDING
SHED
PUMP STATION
AND VALVE VAULT
z
W
INFLUENT
SCREEN
°ROP Rry f
SEPTAGE
COLLECT7ON
FACILITY
LEGEND
FM EXISTING FORCE MAIN
ss EXISTING SANITARY SEWER LINE
S EX1S77NG SLUDGE LINE
0 EXISTING DRAIN UNE
POST AERATION EFFLUENT
STEP WEIR
SLUDGE s
HOLDING
TANK
1
ss,
fk �
ss
�fM
ss fM�
sS Fhs��—
fM
INFLUENT
BLOWERS IN
EQUIPMENT BLDG.
INFLUENT
GRAPHIC SCALE
30 15 0 15 30 60 90
NPDES PERMIT NC0021407
FOR THE
HIGHLANDS WWTP
HIGHLANDS, NORTH CAROLINA
SITE MAP
2,/
/ 3

EXIST.
V—NOTCH
We7R
M M.IRAWDLET
I# DIBWEC1 I UWT
4.2 MGD CAPACITY
ULTRANOET
DISINFECTION UNn
4.2 MGD CAPACITY
EMERGENCY BWASS
DISC FILTER �LH i—,
4.2 MGO CAPACITY
4.2 MGO CAPACITY
D D D D 0 + p p D
DRAIN
PUMPING
STATION
LEGEND
MAIN TREATMENT TRAIN
FM F1— FORCE MAIN
ss ss— SANITARY SEWER LINE
A A AIR UNE
s s SLUDGE UNE
D D DRAIN LINE
NOTE:
VALVES SHOWN ARE FOR
SCHEMATIC PURPOSES ONLY.
DESCRIPTION OF PROCESS FLOW:
EXIST. MH
FORCE HMI
BLOWER BUILDING
1.5 MGD AVERAGE
4.2 MGO P'JH(
SS
MANHOLE
VALVE
VAULT
s
0.79 MG
SERA ACING
REACTOR
ASS SS
s
DECANT VOLUIINE - 0.30 MG
1
0.75 MGO AVERAGE
2.1 MGD PEAK
INFLUENT
VALVE VAULT
0.75 MGD AVERAGE
21 MGD PEAK
SS
POLYMER
MANUAL
BY—PASS
EEN
1.5 MGO AVERAGE
4.2 MGO PEAK
US NG WAY B4 FORCE MAIN (EDSIWG)
FM
AUTOMATIC +
SS SS
iter
SLUDGE VACUUM
DRYING BED •
RAW WASTEWATER ENTERS THE HEAD WORKS OF THE TREATMENT FACILITY VIA A 12-INCH FORCE MAIN. PRETREATMENT
OCCURS WHEN RAW WASTEWATER PASSES THROUGH THE SCREENING MECHANISM TO REMOVE TRASH AND LARGE DEBRIS.
THE ,SCREENING MECHANISM CONSIST OF BOTH A MANUALLY CLEANED BAR RACK AND AN AUTOMATICALLY CLEANED BAR
SCREEN. FROM HERE THE WASTEWATER IS ALTERNATELY TRANSPORTED TO EACH OF THE SEQUENCING BATCH REACTORS
(SBR). AFTER REACTION HAS OCCURRED, TREATED WATER IS ALTERNATELY DECANTED FROM EACH SBR TO THE POST
EQUALIZATION BASIN. FROM THE POST EQ BASIN THE TREATED WATER IS PUMPED TO DISK FILTERS FOLLOWED BY
ULTRAVIOLET (UV) DISINFECTION UNITS. FROM HERE THE TREATED WASTEWATER DISCHARGED INTO THE CALLUSAJA RIVER.
SLUDGE IS WITHDRAWN FROM THE BOTTOM OF THE SBR'S TO THE AEROBIC DIGESTERS. FROM THE AEROBIC DIGESTERS
THE THICKENED SLUDGE IS PUMPED TO THE SLUDGE HOLDING BASIN FOR FURTHER THICKENING. FROM HERE THE SLUDGE
IS TRANSPORTED TO THE EXISTING BELT PRESS WHERE THE SOLIDS ARE DEWATERED. THE DRY SOLIDS ARE THEN HAULED
TO THE LANDFIELD.
PROJECT MANAGER
BLT
DRAWN BY
CADD
DRAWING SCALE
NTS
PROJECT DATE
4/07
APPROVED BY PROJECT NUMBER
BLT 70095.00.HI
FILE NAME
70095_flow sehemat(c.dwg
WK
DICKSON
community infrastructure consultants
401 4th STREET SW, SUITE 201
HICKORY, NC 28802
[phone]
Office Locations:
North Carolina Georgia
South Carolina Florida
NPDES PERMIT NC0021407
FOR THE
HIGHLANDS WWTP
HIGHLANDS, NORTH CAROLINA
STATIING
ON
CPROCESS FLOW SCHEMATIC
1