NC0025542_Permit (Issuance)_20050822

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0025542
Catawba WWTP
Document Type:
Permit Issuance—`
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Report
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
August 22, 2005
This document is printed on reuse paper - ignore any
content on the reYerse side

A,
ATA
NCDENR
Mr. Thomas N. Carr
Interim City Manager
City of Hickory
P.O. Box 398
Hickory, North Carolina 28603
Dear Mr. Carr:
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
August 22, 2005
Subject: NPDES Permit Issuance
Permit No. NC0025542
City of Hickory -Catawba WWTP
Catawba County
Division personnel have reviewed and approved your application for
renewal of the subject permit. Accordingly, we are forwarding the attached
NPDES discharge 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 May 9, 1994 (or as subsequently amended.)
The permit authorizes the City of Hickory to discharge up to 0.225 MGD
of treated wastewater to Lyle Creek, a class WS-IV CA water in the Catawba
River Basin. The draft permit includes discharge requirements and/or
limitations for flow, biochemical oxygen demand (BOD), total suspended solids
(TSS), ammonia, fecal coliform bacteria, total residual chlorine, total nitrogen,
total phosphorus, copper, zinc, and chronic toxicity.
The following modifications noted in the draft permit, remain the same:
• Quarterly effluent monitoring for cyanide and phenols has been
deleted. A review of monitoring data indicated that there is no
reasonable potential for these parameters to exceed the water quality
standard and are no longer parameters of concern.
• Monthly monitoring for copper and zinc has been added to permit,
instead of the previous quarterly monitoring. A review of submitted
monitoring data indicated that there is reasonable potential for these
parameters to exceed the water quality standard.
N. C. Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699.1617
Internet: h2o.enr.state.nc.us
Phone: [phone]
fax: [phone]
DENR Customer Service Center: 1 800 623-7748

Letter to Thomas Carr
Page 2
• A total residual chlorine limit of 28 ug/1 has been added to reflect the
Division's current policy for protection against chlorine toxicity
instream. The limit for total residual chlorine shall become effective
upon completion of the installation of a disinfection system but no
later than 18 months from permit issuance (February 1, 2007). If a
method different than chlorination/dechlorination is used, the total
residual chlorine limit will not be applicable.
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 a demand is made, this permit shall
be final and binding.
Please take notice that this permit is not transferable. 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 Quality, or permits required by the Division of
Land Resources, Coastal Area Management Act, or any other Federal or Local
governmental permits may be required.
If you have any questions or need additional information, please contact
Ms. Jacquelyn Nowell at telephone number [phone], extension 512.
Sincerely,
ORIGINAL SIGNED BY
SUSAN A. WILSON
Alan W. Klimek, P.E.
Attachments
cc: Mooresville Regional Office/Surface Water Protection
Central Files
Aquatic Toxicology Unit
Permit File

Permit Number NC0025542
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 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
City of Hickory
is hereby authorized to discharge wastewater from a facility located at the
Hickory - Catawba Wastewater Treatment Plant
End of 6th Avenue NW
North of Catawba
Catawba County
to receiving waters designated as Lyle Creek in the Catawba River Basin in accordance
with effluent limitations, monitoring requirements, and other conditions set forth in Parts
I, II, III and IV hereof.
This permit shall become effective October 1, 2005.
This permit and authorization to discharge shall expire at midnight on April 30, 2010.
Signed this day August 22, 2005.
ORIGINAL SIGNED BY
SUSAN A. WILSON
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit Number NC0025542
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are
hereby revoked, and as of this issuance, any previously issued permit bearing this number
is no longer effective. Therefore, the exclusive authority to operate and discharge from this
facility arises under the permit conditions, requirements, terms, and provisions included
herein.
City of Hickory, is hereby authorized to:
1. Continue to operate an existing 0.225 MGD wastewater treatment facility with the
following components:
• Dual bar screens
• Two aeration basins
• Two secondary clarifiers
• Chlorine contact basin (gas disinfection)
• Instrumented flow measurement (with recorder)
• An aeration sludge holding tank
The facility is located at Hickory -Catawba WWTP, Sixth Avenue NW, north of
Catawba, Catawba County.
2. Discharge from said treatment works at the location specified on the attached map
into Lyle Creek, classified WS IV CA waters in the Catawba River Basin.

i
Facility Information
Latitude:
Longitude:
Quad #:
Stream Class:
Receiving Stream:
Permitted Flow:
35°42'55" Sub -Basin: 03-08-32
81°04'25"
E14NE
WS-IV CA
Lyle Creek
0.225 MGD
t
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City of Hickory -Catawba W WTP
NC0025542
Catawba County

Permit Number NC0025542
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS —FINAL
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized
to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by
the Permittee as specified below:
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LIMITATIONS
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Flow
0.225 MGD
Continuous
Recording
I or E
BOD5 2
30.0 mg/1
45.0 mg/1
Weekly
Composite
E,I
Total Suspended Solids2
30.0 mg/1
45.0 mg/1
Weekly
Composite
E,I
NH3-N (
2/Month
Composite
E
Fecal Coliform
200/100 ml
400/100 ml
Weekly
Grab
E
pH3
Weekly
Grab
E
Total Residual Chlorine4
28 ug/1
. 2/Week
Grab
E
Temperature
Daily
Grab
E
Conductivity
Weekly
Grab
E
Copper
Monthly
Composite
E
Zinc
Monthly
Composite
E
Total Nitrogen (NO2 + NO3 +
T
Quarterly
Composite
E
Total Phosphorus
Quarterly
Composite
E
Chronic Toxicity5
Quarterly
Composite
E
Notes:
1. Sample Locations: E - Effluent, I - Influent,
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of
the respective influent value (85% removal).
3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
4- Monitoring requirement applies only if chlorine is added for disinfection.- See A (3.) Special Conditions of
the Supplement to Effluent Limitations.
5. Chronic Toxicity (Ceriodaphnia) P/F ® 2.1%; February, May, August, November. See A (2.) Special
Conditions of the Supplement to Effluent Limitations.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit Number NC0025542
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 2.1%.
The permit holder shall perform at a minimum, quarteriu monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity T t-ProcPriure" (Revised=ebruary 1998) or subsequent
versions. The tests will be performed during the months erand Decembffluent
sampling for this testing shall be performed at the NPDE permitted final effluent disc har Blow all treatment
processes. earEd- r c-$ y 4Q :- Na /
If the test procedure performed as the first test of any single quarter re ults 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 -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 II 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 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, DWQ Form AT-3 (original) is to be sent to the
following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
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.

I"
Permit Number NC0025542
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A. (3.) TOTAL RESIDUAL CHLORINE
The limit for total residual chlorine shall become effective upon completion of the installation of a disinfection
system but no later than 18 months from the issuance of the permit (February 1, 2007). If a method different
than chlorination/dechlorination is used, the total residual chlorine limit will not be applicable.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0025542
Facility Information
Applicant/Facility Name:
City of Hickory -Catawba WWTP
Applicant Address:
P.O. Box 398 Hickory, N.C. 28603
Facility Address:
End of 6th Avenue NW
Permitted Flow
0.225 MGD
Type of Waste:
Domestic
Facility/Permit Status:
Renewal
Facility Classification
II
County:
Catawba
Miscellaneous
Receiving Stream:
Lyle Creek
Regional Office:
Mooresville
Stream Classification:
WS-IV CA(11-74-al
USGS Topo Quad:
E14NE/Catawba, N.C.
303(d) Listed?:
No
Permit Writer:
Jackie Nowell
Subbasin:
03-08-32
Date:
June 20, 2005
Drainage Area (mi2):
72.8
.
�^
-'
Summer 7Q10 (cfs)
16
Winter 7Q10 (cfs):
29
Average Flow (cfs):
84j1`d
IWC (%):
2.1
Primary SIC Code:
4952
SUMMARY OF FACILITY INFORMATION AND WASTELOAD ALLOCATION
The City of Hickory is requesting renewal of the former Catawba WWTP. Hickory purchased the
Town of Catawba WWTP in July 2003. The WWTP discharges into Lyle Creek, a class WS-IV CA
stream, in CTB32 subbasin. The facility does not have a pretreatment program. Its wastewater
is primarily domestic.
Lyle Creek is not listed on North Carolina's 2002 303(d) list.
There is a management strategy for the Lyle Creek watershed. Results of a 1988 modeling
analysis indicated that BOD5 and NH3 had been over allocated in Lyle Creek under prior
wasteload allocation procedures. The model was done to establish NPDES permit limits for
the Town of Conover WWTP (discharging upstream of Catawba) to protect the DO standard and
was used to guide recommendation for future expansions and new facilities in the Lyle Creek
watershed. Expanding facilities in the Lyle Creek watershed will receive BOD and NH3 limits
that will hold their load of oxygen consuming wastes constant. All new facilities discharging to
the Lyle Creek watershed will receive limits for oxygen consuming waste of ultimate summer
BOD not greater than 21 mg/1 (equivalent to 8 mg/1 BOD5 and 2 mg/1 NH3 for domestic
discharges.)
In the 2004 Catawba River Basinwide Management Plan --The Aquatic Life use support rating
for 6.3 miles of Lyle Creek from Bakers Creek to US Highways 64 and 70 is supporting based
on monitoring. No problem parameters are listed in this report. Previously sediment was listed
as a problem parameter in this segment of Lyle Creek.
The 1997 benthos rating at US Highways 64 and 70 was Good -Fair. The results of 1997 fish
sampling at US 79 was Good.
City of Hickory -Catawba W\VTP Fact. Sheet
NPDES Renewal
Pale 1

Existing Effluent Limits for Catawba WWTP (per 2001 permit)
Qw = 0.225 MGD
BOD5 = 30 mg/1
NH3 = monitoring)
TSS = 30 mg/1
Fecal Coliform = 200/ 100m1
TRC = monitoring
pH = 6-9 SU
Quarterly monitoring for cyanide, copper, phenols, zinc, TP and TN
Chronic Toxicity P/F CO 2.1%; February May August November
TOXICITY TESTING:
Current Requirement: Chronic Toxicity P/F @ 2.1%; February May August November
Facility has passed all tests from 2001 through May 2005
Although facility is primarily domestic, future plans may include industrial ww. City has
request inhouse for spec limits which would make the facility a major discharger.
Recommend renewal of Chronic Toxicity P/F @ 2.1%; February May August November
COMPLIANCE SUMMARY:
Facility appears to be well operated. Only one violation report in Compliance System, pH
violation in March 2005. All other limits have been met.
INSTREAM MONITORING REQUIREMENTS:
Instream monitoring is not required for this WWTP.
REASONABLE POTENTIAL ANALYSIS
The following metal/toxicity parameters are monitored in the NPDES permit: Copper, cyanide,
phenols, and zinc.
Data for these parameters was reported in the discharge monitoring reports (DMR) and a RPA was
done:
Reasonable potential analysis was conducted based on data from 2002 through April 2005. Results
and data analysis are attached.
• Monthly monitoring should be started for copper based on RPA. Copper results had
fifteen (15) reported values. There was reasonable potential to exceed the allowable acute
concentration but not the allowable chronic concentration for the NC action level.
Monthly monitoring is required based on the class of the facility.
• Monthly monitoring should be started for zinc based on RPA. Zinc results had fifteen (15)
reported values. There was reasonable potential to exceed the allowable acute and
chronic concentrations for the . NC action level. Monthly monitoring is required based on
the class of the facility.
• Quarterly monitoring for cyanide and phenols should be deleted. Based on analysis,
neither parameter showed reasonable potential to exceed allowable concentrations.
PROPOSED CHANGES:
The following modifications have been made to the permit:
• The addition of a Total Residual Chlorine limit of 28 ug/1 based on DWQ procedure
that requires limit for all municipal discharges. Eighteen month compliance schedule
will be given_
• Quarterly monitoring for copper and zinc will be changed to monthly monitoring
based on the results of RP analysis.
• Quarterly monitoring for cyanide and phenols will be deleted based on the results of
the RP analysis.
City of Hickory -Catawba WkrW T'P Fact Sheet
NPDES Renewal
Page 2

•
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: 06/22/2005
Permit Scheduled to Issue: 08/15/2005
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please
contact ,d ckie Nowell at [phone] ext. 512.
DATE:
c
1 EGIONAL OFFICE COMMENT:
Titc,c% O f 7 %7fI-G,G / 4s / -i92 s 0,L7
r6.xmr / 5 /�/C/�O/L 1�- . %7 N"9 � 7
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l�lvir%� 73 lboro%Ly to ! r'' M/,9't I�/�.yi�`� oit/ j �rL 4 2oa .
its, 724(
NAME:
NPDES SUPERVISOR COMMENT:
NAME:
7/21/.),--
31`11DATE:��
DATE:
City of Hickory -Catawba WWII' Fact Sheet
NPDES Renewal
Page 3

Catawba Permits
Subject: Catawba Permits
From: Dave Toms <[e-mail]>
Date: Thu, 21 Jul 2005 13:49:14 -0400
To: Jackie Nowell <[e-mail]>, Susan Wilson <[e-mail]>, Dave Goodrich
<[e-mail]>
CC: Bob Sledge <[e-mail]>, Bob Guerra <[e-mail]>, Darlene Kucken <[e-mail]>,
Michelle Woolfolk <[e-mail]>
Howdy Permitters,
I want to give you all an update on information coming out of the Duke/FERC Reliscensing process on the Catawba and find out where we are
on permit renewals in the Rhodhiss area.
We are starting to get preliminary data from the water quality models Duke is developing for the Catawba mainstem. Some of that data is
included in the draft study report - link below. Not currently included in the report is evidence demonstrating the impact the Valdese WWTP
is having on Lake Hickory. This is particularly interesting because the Valdese discharge is into Lake Rhodhiss, about 6 miles upstream of the
dam. Our working assumption has been Valdese is a major contributor to the eutrophic conditions that led to Rhodhiss' impairment. The
model, however, is indicating the Valdese discharge has a larger impact on Lake Hickory. (Please recall that Lake Hickory is on the
borderline of nutrient impairment.) The majority of Rhodhiss' point source problems appear to be coming from Morganton and Lenoir's
WWTPs. The model will be able to isolate Morganton's impact on Rhodhiss, but unfortunately, the Lenoir discharge is hidden in the total
load entering from Lower creek. •
Have these WWTP permits been renewed yet? If so, what were their terms? If not, can we set aside some time to discuss optimization options
and the like?
http://www.dukepower.com/community/lakes/cw/library/plans/W Q%2ORC%20Report%20ver%205.pdf
Thanks,
Dave Toms
Basin Planner
Planning Branch : Basinwide Planning Program unit
DENR : Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699
Phone# [phone], ext. 577
Fax# [phone]
o t- a r-i to ri
TA
c_y\f‘rsi.
Lanair \/\/WTP
Valdese
WV\/TP
1 of 2 7/21/2005 2:26 PM

Catawba Permits
7
organton
VVTP
David Toms <[e-mail]
Basin Planner
Division of Water Quality
NC Department of Environment and Natural Resources
Lenoir VVVVTP
p- odhiss
Valdese
VVVVTP
2 of 2
7/21/2005 2:26 PM

PUBLIC NOTICE
STATE OF
NORTH CAROLINA--
'ENVIRONMENTAL
• MANAGEMENT
CONMISSIONMPDES UNIT
1617MAIL:. -
SERVICE CENTER
RALEIGH, NC 27699.1617
•NOTIFICATION - OF .INTENT
TO ISSUE A NPDES
WASTEWATER PERMIT •
On the basis of thorough staff
review and application of NC
General Statue. 14321, ,Public
law 92-500 and other lawful
'standards and reg ulations; the
North Carolina • Environmental
Management Commission pre -
poses to issue a National Pol-
lutant Discharge Eiminattonstem NPD S wastewater
discharge permit to the per-
sons) listed below effective 45
days from the publish date of
this notice.. :- .
Written comments regarding
the proposed permit will be ac-
cepted until 30 days after the
publish date of this notice. An
comments received prior to
that date are considered in the
final ,determinations . regarding
the proposed penniL The -.Di-
rector ,of the NC Division of
Water . Quafdy may decide to
fold a meeting for the
proposed Wri should the Di-
vision receive a - signifoant. de-
gree of public interest.
Copies of the drsupportingafpemmit and
infrmation
other
fe used determine con-
ditons present in the draft per-•
mit are available upon request
and paymentof the costs of
reproduction. , -Mali comments
:and/or for information
to the NC Division of Water
Quality at :the above address
or. call the;,•Point Source
Branch at (9191733.5083, ex
'tension 520.-Please include
the NPDES permit number (a
Tttached) in any communica-
tion. Interested persons may
also visit the Division of Water
Quality , at 512 N. Salisbury
Street, Raleigh, . NC 27604-
1148 between the hours of
8:00 am.- and 5:00 p.m. to re-
view information on file.. ..
NPDES Permit Number
NC0025542, City of Hickory -
Catawba " WWTP; Catawba
County, has applied for renew-
. al of its permitter a facility cis:
:charging treated wastewater tq
the Lyle Creek in the Catawba
River Basin.` Currently fecal
cordon and total residual
chlorine are water quality
Limitet this discharge may af-
fect future allocations in this.
portion of the receiving stream.
LIC: duneA, 2005 as
23083
NORTH CAROLINA
CATA A COUNTY
Otr\DAO
being first duly swor ays: That he or
she is . �. �? /— of the
Hickory aily ,. Record, a newspaper pub-
lished at Hickory, North Carolina; that in
the issues of the said newspaper for the
following days, to wit:
ure_ 2bp/065-
there appeared
spaced
lines of advertising as per attached named
advertiser
The Hickory Daily Record is a qualified news-
paper within the meaning of sec ' 1-597 of the
General tatutes of N. C.
Affiant
Sworn to and subscribed before me,
this ..........•0?' .......... day of
,20'
My Commission Expires
�� , 20 er

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0025542
Facility Information
Applicant/Facility Name:
City of Hickory -Catawba WWTP
Applicant Address:
P.O. Box 398 Hickory, N.C. 28603
Facility Address:
End of 6th Avenue NW
Permitted Flow
0.225 MGD
Type of Waste:
Domestic
Facility/Permit Status:
Renewal
Facility Classification
II
County:
Catawba
_
Miscellaneous
Receiving Stream:
Lyle Creek
Regional Office:
Mooresville
Stream Classification:
WS-IV CA(1f-74-(V.)
USGS Topo Quad:
E14NE/Catawba, N.C.
303(d) Listed?:
No
Permit Writer:
Jackie Nowell
Subbasin:
03-08-32
Date:
June 20, 2005
Drainage Area (mi2):
72.8
.
t
Summer 7Q10 (cfs)
16,
�'
a�
Winter 7Q10 (cfs):
29
Average Flow (cfs):
84
IWC (%):
2.1
Primary SIC Code:
4952
SUMMARY OF FACILITY INFORMATION AND WASTELOAD ALLOCATION
The City of Hickory is requesting renewal of the former Catawba WWTP. Hickory purchased the
Town of Catawba WWTP in July 2003. The WWTP discharges into Lyle Creek, a class WS-IV CA
stream, in CTB32 subbasin. The facility does not have a pretreatment program. Its wastewater
is primarily domestic.
Lyle Creek is not listed on North Carolina's 2002 303(d) list.
There is a management strategy for the Lyle Creek watershed. Results of a 1988 modeling
analysis indicated that BOD5 and NH3 had been over allocated in Lyle Creek under prior
wasteload allocation procedures. The model was done to establish NPDES permit limits for
the Town of Conover WWTP (discharging upstream of Catawba) to protect the DO standard and
was used to guide recommendation for future expansions and new facilities in the Lyle Creek
watershed. Expanding facilities in the Lyle Creek watershed will receive BOD and NH3 limits
that will hold their load of oxygen consuming wastes constant. All new facilities discharging to
the Lyle Creek watershed will receive limits for oxygen consuming waste of ultimate summer
BOD not greater than 21 mg/1 (equivalent to 8 mg/1 BOD5 and 2 mg/1 NH3 for domestic
discharges.)
In the 2004 Catawba River Basinwide Management Plan --The Aquatic Life use support rating
for 6.3 miles of Lyle Creek from Bakers Creek to US Highways 64 and 70 is supporting based
on monitoring. No problem parameters are listed in this report. Previously sediment was listed
as a problem parameter in this segment of Lyle Creek.
The 1997 benthos rating at US Highways 64 and 70 was Good -Fair. The results of 1997 fish
sampling at US 79 was Good.
City of Hickory -Catawba WWTP Fact Sheet
NPDES Itenewa!
Page: 1

Existing Effluent Limits for Catawba WWTP (per 2001 permit)
Qw = 0.225 MGD
BODS = 30 mg/1
NH3 = monitoring)
TSS = 30 mg/1
Fecal Coliform = 200/ 100m1
TRC = monitoring
pH = 6-9 SU
Quarterly monitoring for cyanide, copper, phenols, zinc, TP and TN
Chronic Toxicity P/F @ 2.1%; February May August November
TOXICITY TESTING:
Current Requirement: Chronic Toxicity P/F @ 2.1%; February May August November
Facility has passed all tests from 2001 through May 2005
Although facility is primarily domestic, future plans may include industrial ww. City has
request inhouse for spec limits which would make the facility a major discharger.
Recommend renewal of Chronic Toxicity P/F @ 2.1%; February May August November
COMPLIANCE SUMMARY:
Facility appears to be well operated. Only one violation report in Compliance System, pH
violation in March 2005. All other limits have been met.
INSTREAM MONITORING REQUIREMENTS:
Instream monitoring is not required for this WWTP.
REASONABLE POTENTIAL ANALYSIS
The following metal/toxicity parameters are monitored in the NPDES permit: Copper, cyanide,
phenols, and zinc.
Data for these parameters was reported in the discharge monitoring reports (DMR) and a RPA was
done:
Reasonable potential analysis was conducted based on data from 2002 through April 2005. Results
and data analysis are attached.
• Monthly monitoring should be started for copper based on RPA. Copper results had
fifteen (15) reported values. There was reasonable potential to exceed the allowable acute
concentration but not the allowable chronic concentration for the NC action level.
Monthly monitoring is required based on the class of the facility.
• Monthly monitoring should be started for zinc based on RPA. Zinc results had fifteen (15)
reported values. There was reasonable potential to exceed the allowable acute and
chronic concentrations for the . NC action level. Monthly monitoring is required based on
the class of the facility.
• Quarterly monitoring for cyanide and phenols should be deleted. Based on analysis,
neither parameter showed reasonable potential to exceed allowable concentrations.
PROPOSED CHANGES:
The following modifications have been made to the permit:
• The addition of a Total Residual Chlorine limit of 28 ug/1 based on DWQ procedure
that requires limit for all municipal discharges. Eighteen month compliance schedule
will be given_
• Quarterly monitoring for copper and zinc will be changed to monthly monitoring
based on the results of RP analysis.
• Quarterly monitoring for cyanide and phenols will be deleted based on the results of
the RP analysis.
City of Hickory .Cai.;:o.vba llj\VTP {'i1('t Sheet
ZJNI}.ES it('.I1C'.wa}
f' a g c 2

PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: 06/22/2005
Permit Scheduled to Issue: 08/15/2005
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please
contact Mackie Nowell at [phone] ext. 512.
NAMI : L L- t1 ° im,(.. DATE: VZis
RgGIONAL OFFICE COMMENT:
NAME: DATE:
NPDES SUPERVISOR COMMENT:
NAME: DATE:
City of i..hc.I(()..:-Catawba \\T\l''I'I.' Fact S}hi-c't
NI"DES
Page 3

REASONABLE POTENTIAL ANALYSIS
Hiickory - Catawba WWTP
NC0025542
Time Period 01/2002-02/2005
Qw (MGD) 0.225
7010S (cis) 16
7010W (cis) 29
3002 (cis) 34
Avg. Stream Flow, QA (cis) 84
Rec'ving Stream Lyle Creek
WWTP Class 11
!WC (%) 0 7010S 2.1332
® 7010W 1.1883
® 3002 1.0153
® QA 0.4135
Stream Class C
Outfall 001
Qw = 0.225 MGD
PARAMETER
TYPE
111
STANDARDS&
CRITERIA (2)
POL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC IYQS/
Chronic
K FAY/
Acute
n
it'd Mzx Fred Cw Altowabftt Cw
Arsenic
NC
50
ug/L
0
0
NIA
Acute: WA
__�--.---.-------_---.-----•—.—•—
' Chronic:-
ronic: 2,344
Beryllium
C
6.5
ug/L
0
0
WA
Acute: WA
_ _ _ _ _
Chronic: 1,572
------------_—.—.---.—.---.—.—
Cadmium
NC
2
15
ugh.
0
0
WA—,--•-----------------------------
Acute: 15
ChroniC: •94
Chromium
NC
50
1,022
ug/L
0
0
WA
Acute: 1,022
_ 2,3 _�.-----------
Chronic: 44
--- —•—•_ —---- ------
Copper
NC
7
AL
7.3
ug/L
16
7
251.9
Acute: 7
_ _ _•_ _ ------------
Chronic: .—
exceeds the acute action level
Recommend monthly monitoring •—_—.—.•—.—
---—.—
Cyanide
NC
5
N
22
10
ug/L
16
2
5.0
Acute: 22
_ _ _ _,
._.---_
Chronic: 234
No RP shown
Recommend monitoring be dropped _—.—•—_—_—.—
— — —_
Fluoride
NC
1,800
ug/L
0
0
NIA
Acute: N/A
_ _ _ 84,381
Chronic:
-- ---.—_—_— _—_—_—_—_—_—.—_—_—
Lead
NC
25
N
33.8
ug/L
0
0
WA
Acute: 34
_ ._ _ _—_—.—.—.—.—
Ch►onic: 1,172
_--•---------.—.—.—.—
Mercury
NC
0.012
0.0002
uglt.
0
0
N/A
Acute: N/A
Chronic: 1
Molybdenum
A
3,500
ug/L
0
0
N/A
Acute: WA
_ ro_ _
Chnic: 344,719
+ --- — --------------------------
.—
Nickel
NC
88
261
ug/L
0
0
N/A
Acute: 261
_ _ _
Chronic: 4.125_
-.------- ------- ---.------ ----- —
Phenols
A
1
N
ugh_
13
1
32.0
Acute: N/A
_ _ ---•--•—•-----------------------------
Chronic:
No RP shown
Recommend that monitoring be dropped
Selenium
NC
5.0
56
ug/L
0
0
N/A
Acute: 56
_ _ ._ _ _-----------
Chronic: 234
_--- -----------------
Silver
NC
0.06
AL
1.23
ug/L
0
0
N/A
Acute: 1
Chronic: '-- 3 •--------•---•---------------------
Zinc
NC
50
AL
67
ug/L
15
15
715.9
Acute: 67
_ _ _
Chronic: - 2,344
exceeds the acute action Level
Recommend monthly monitoring
---•---•---------•-------------•—
• Legend:
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
'• Freshwater Discharge
25542rpa05, rpa
6/21/2005

REASONABLE POTENTIAL ANALYSIS
Copper
Cyanide
1
2
3
4
5
6
7
8
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
59
60
199
200
Date Data BDL=1/2DL Results
Feb•2005 < 38 19.0 Std Dev. 17.2305
Oct-2004 <:. 38 19.0 Mean 22.2250
<38 19.0 C.V. 0.7753
7.5 7.5 n 16
4.1 4.1
0ct-2003 < 38 19.0 Mull Factor = 3.1100
38 19.0 Max. Value 81.0 ug/L
<, 25 12.5 Max. Pred Cw 251.9 ug/L
<' 50 25.0
Dec-2002 < 25 12.5
31 31.0
16 16.0
21 21.0
31 31.0
81 81.0
Apr-2005 <. 38 19.0
Date
1 Feb-2005
2 Oct-2004
3
4
5
6 Oct-2003
7
8
9
10 Dec-2002
11
12
13
14
15
16 Apr-2005
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
59
60
199
200
Data
BDL=1/2DL Results
9 5.0 Std Dev. 0.0000
5 5.0 Mean 5.0000
5 5.0 C.V. 0.0000
2 5.0 n 16
2 5.0
2 5.0 Mull Factor = 1.0000
2 5.0 Max. Value 5.0 ug/L
5 5.0 Max. Pred Cw 5.0 ug/L
5 5.000
5 5.000
5 5.000
5 5.000
5 5.000
5 5.0
5 5.0
5 5.0
-2-
25542rpa05, data
6/21/2005

REASONABLE POTENTIAL ANALYSIS
Phenols
Zinc
1
2
3
4
5
6
7
8
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
59
60
199
200
Date Data BDL=1/2DL Results
Oct-2004 < 20 10.0 Std Dev. 3.8297
< 20 10.0 Mean 6.5000
< 20 10.0 C.V. 0.5892
< 20 10.0 n 13
Oct-2003 < 20 10.0
12 12.0 Mult Factor = 2.6700
< 5 2.5 Max. Value 12.0 ug/L
< 5 2.5 Max. Pred Cw 32.0 ug/L
Dec-2002 < 10 5.0
< 5 2.5
< 5 2.5
< 5 2.5
Apr-2005 < • 10 5.0
Date Data BDL=1/2DL Results
1 Feb-2005 173 173.0 Std Dev. 62.9365
2 Oct-2004 59 59.0 Mean 83.0000
3 28 28.0 C.V. 0.7583
4 36 36.0 n 15
5 44 44.0
6 30 30.0 Mull Factor = 3.1400
7 88 88.0 Max. Value 228.0 ug/L
8 28 28.0 Max. Pred Cw 715.9 ug/L
9 59 59.0
10 12/202 30 30.0
11 59 59.0
12 83 83.0
13 228 228.0
14 160 160.0
15 Apr-2005 140 140.0
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
59
60
199
200
- 3 -
25542rpa05, data
6/21/2005

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
MEMORANDUM
To:
From:
Subject:
Britt Setzer
NCDENR / D
Mooresville Regional Office
Jackie Nowell
NPDES Unit
June 22, 2005
/ Regional Engineer
Review of Draft NPDES Permit NC0025542
Hickory -Catawba WWTP
Catawba County
AVA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Please indicate below your agency's position or viewpoint on the draft permit and return this form by July 29, 2005.
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)
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:
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 512 (fax) 919 733-0719
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES Jackie.Nowell@ ncmail.net

Draft Permit Reviews (2)
Subject: Draft Permit Reviews (2)
From: John Giorgino <[e-mail]>
Date: Fri, 29 Jul 2005 15:11:56 -0400
To: Jackie Nowell <[e-mail]>
Jackie, I have reviewed the following:
NC0025542 Catawba WWTP
NC0085359 Twelve Mile Creek WWTP
I have no comments. Thanks for forwarding them.
John
John Giorgino
Environmental Biologist
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
Mailing Address:
1621 MSC
Raleigh, NC 27699-1621
Office: 919 733-2136
Fax: [phone]
Email: [e-mail]
Web Page: http://www.esb.enr.state.nc.us
1 of I 7/29/2005 3:08 PM

The Observer News Enterprise
309 North College Ave.
P O Drawer 48
Newton, NC 28658
NCDENR DWQ/Point Source Branch
Attn: Carolyn Bryant
1617 Mail Service Center
Raleigh, NC 27699-1617
Date(s) Run Description
06/24/05 Notice-NPDES/L
North Carolina
Catawba County
Charge Balance
58.28 58.28
STEVE GARLAND... BEING DULY SWORN SAYS; That he is the publisher of the OBSERVER
NEWS ENTERPRISE, a newspaper published at Newton, N.C. And that it is a newspaper of general
circulation in Catawba County and surrounding counties. The Annexed Notice of Notice-NPDES/L was
published in said newspaper and not a supplement thereof and is a true copy of the notice as it was
published in the regular and entire edition of THE OBSERVER NEWS ENTERPRISE. Appearing each
week, beginning on the 24th day of June 2005 and ending on the 24th day ofJune 2005 and that said
OBSERVER NEWS ENTERPRISE was regularly distributed to the subscribers during said period.
Sworn to and subscribed before me, this 204 day ofJune 2005
NOTARY PUBLIC
My commission expires April 24, 2009
rutsuu NOTICE
STATE OF NORTH
CAROLINA
ENVIRONMENTAL MAI\
AGEMENT
COMMISSION/NPDES
' UNIT
1617 MAIL SERVICE
CENTER
RALEIGH, NC 27699-161
NOTIFICATION OF IN-
TENT TO ISSUE A NPDE.
WASTEWATER PERMIT
On the basis of thoroug
staff review and applicatio
of NC General Statut
143.21, Public law 92-50
and other lawful standard
and regulations, the Norti
Carolina Environments
Management Commissioi
proposes to issue a Nation
al Pollutant Environmenta
Elimination Systerr
(NPDES) wastewater dis
charge permit to the
person(s) listed below effec
tive 45 days from the pub
lish date of this notice.
Written comments re
garding the proposed permi
will be accepted until 3(
days after the publish date
of this notice. AU comment:
received prior to that date
are considered in the fina
determinations regardinc
the proposed permit. The
Director of the NC Divisior
of Water Quality may decide
to hold a public meeting foi
the proposed permit shoulc
the Division receive a signif-
icant degree of public inter-
est.
Copies of the draft per-
mit and other supporting in-
formation on file used to de-
termine conditions present
in the draft permit are avail-
able upon ren.-;s: and pay-
ment of the costs of repro-
duction. Mail comments
and/or requests for informa-
tion to the NC Division of
Water Quality at the above
address or call the Point
Source Branch at (919)
733-5083, extension 520.
Please include the NPDES
permit number (attached) in
any communication. Inter-
ested persons may also visit
the Division of Water Quali-
ty at 512 N. Salisbury
Street, Raleigh, NC 27604-
i148 between the hours of
8:00 a.m. and 5:00 p.m. to
review information on file.
NPDES Permit Number
NC0025542, City of hickory -
Catawba County, has ap-
plied for renewal of its per-
mit for a facility discharging
treated wastewater to the
Lyle Creek in the Catawba
river Basin. Currently fecal
coliform and total residual
chlorine are water quality
limited. This discharge may
affect allocations in this por-
tion of the receiving stream.
Pub: Friday, June 24, 2005.

SOC PRIORITY PROJECT: Yes_ No X
To: Permits and Engineering Unit
Water Quality Section
Attention: Carolyn Bryant
Date: August 18, 2004
NPDES STAFF REPORT AND RECOMMENDATION
County: Catawba
MRO# 04-63
Permit No. NC0025542
PART I - GENERAL INFORMATION
1. Facility and address: City Of Hickory, Catawba WWTP
P.O. Box 398
Hickory, North Carolina 28603
2. Date of investigation: August 12, 2004
3. Report prepared by: Samar Bou-Ghazale, Env. Engineer.'
4. Persons contacted and telephone number: Mr. Watkins Bradberry, ORC, [phone].
5. Directions to site: From the intersection ofNC Hwy 10 and 6th Avenue, NE, in the Town of
Catawba, travel east on 6th Ave., NE. The WWTP is located at the end of 6t Ave., NE.
6. Discharge point(s). List for all discharge points:
Latitude: 35 ° 42' 55" Longitude: 81 ° 04' 25"
Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on map.
USGS Quad No.: E 15 NE USGS Name: Catawba, NC
7. Site size and expansion area are consistent with application?
Yes X NoIf No, explain:
8. Topography (relationship to flood plain included): Facilities are not located in the 100-year
flood plain. Slopes range from 3- 5%.
9. Location of nearest dwelling: Approximately 400 feet from WWTP site.
10. Receiving stream or affected surface waters: Lyle Creek_

a. Classification: WS-IV CA
b. River Basin and Subbasin No.: Catawba 030832
c. Describe receiving stream features and pertinent downstream uses: The receiving
stream is a large creek that discharges to lake Norman. Lake Norman is used as a
source of water supply and for primary recreation.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.225 MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater treatment facility? 0.225
MGD
c. Actual went capacity of the current facility (current design capacity)? 0.225
MGD
d. Date(s) and construction activities allowed by previous Authorizations to Construct
issued in the previous two years: N/A.
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The existing facilities consists of dual bar screens, two aeration
basins, two secondary clarifiers, chlorine contact basin (gas disinfection), instrumented
flow measurement, and an aerated sludge holding tank.
£ Please provide a description of proposed wastewater treatment facilities: N/A.
g. Possille toxic impacts to surface waters: N/A.
h. Pretreatment Program (POTWs only): In compliance.
2. Residuals handling and utiii7ation/disposal scheme:
Sludge is removed as necessary and transported to the Ifickory Regional Compost Facility
(WQ0004563). The Hickory Regional Compost Facility converts all biosolids to a class "A"
compost marketed as "Catawba ORGRO".
3. Treatment plant classification (attach completed rating sheet): Class II (no change ofraimg,
no rating sheet attached).
4. SIC Code(s): 4952
Primary: 01 Secondary:
Page 2

Main Treatment Unit Code: 05003
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? NIA.
2. Special monitoring or limitations (including toxicity) requests: None.
3. Important SOC, JOC or Compliance Schedule dates: N/A
4. Alternative Analysis Evaluation: (Has the facility evaluated all of the non -discharge options
available. Please provide regional perspective for each option evaluated): N/A
5. Air quality and/or groundwater concerns or hazardous materials utilized at this facility that
may impact water quality, air quality or groundwater? No known air quality, groundwater
or hazardous materials concerns.
6. Other Special Items: In July 2003, the City of Hickory purchased the Catawba WWTP
from the Town of Catawba.
PART IV - EVALUATION AND RECOMMENDATIONS
The Permittee, the City of Hickory, is applying for renewal of the facility's NPDES permit
to discharge treated wastewater. The City of Hickory has upgraded the influent and effluent flow
measuring devices and is in the process of budding a new chlorine room. No major modifications
have taken place at the facility. Pending review and approval by the P&E, it is recommended that
the permit be renewed as requested.
ass
Signature of Report ' arer
Water Quality ; egional Supervisor
Date
Page 3

4111ek0ryre Business and Pleasure Grow Together t'
June 8, 2004
Mrs. Valery Stephens
NCDENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
/UMxs
Public Utilities
Administration
J U L 1 2004
DEHR - WA fFR no1.°:t.TY
POINT SG :;.:: :.;..,lCH
City of Hickory
Post office Box 398
Hickory, NC 28603-0398
Telephone [phone]
Fax [phone]
[e-mail]
Subject: Hickory -Catawba WWTP (NPDES # NC 0025542) Permit Renewal Application
Dear Mrs. Stephens:
Attached please find the completed renewal application package including Sections A, B, C, E,
Sludge Management Plan Narrative, Site Topographic Map and Process Flow Diagram for the
above referenced site. This application is requesting renewal of the existing permit with no
capacity modifications having taken place at the facility with the exception of ownership and
sludge disposal methods.
The City of Hickory has upgraded various components of this operation since purchasing in July
2003. The influent and effluent flow measuring devices have been replaced, updated lab
equipment has been purchased and instituted and a new chlorine room has been constructed.
Thank you in advance for your cooperation and assistance in completing this renewal application.
Should you have any questions or desire additional information, please do not hesitate to contact
me at [phone] or at [e-mail].
Sincerely,
Kevin B. Greer, PE
Public Services Manager
PC: Gene Haynes, Utilities Resource Director
Watkins Bradberry, ORC — HCWWTP
Shawn Pennell, Collection System Superintendent
Bob Shaver, Back-up ORC HCWWTP
GREATER
HICKORY
METRO

c orb
Where Business and Pleasure Grow Together
June 8, 2004
Subject:
Biosolids Management Plan for Hickory -Catawba Wastewater Treatment Plant
NPDES # NC 0025542
To Whom It May Concern:
The City of Hickory owns and operates three wastewater treatment facilities: Hickory -Catawba
WWTP (NPDES # NC 0025542), Northeast WWTP (NPDES # NC 0020401) and Henry Fork
WWTP (NPDES # NC 0040797). All city owned wastewater facilities transport biosolids
generated via road tractor and tanker to the Hickory Regional Compost Facility (WQ 0004563).
The Hickory Regional Compost Facility then commingles and processes to convert all biosolids to
a Class "A" compost marketed as "Catawba ORGRO".
The Hickory Regional Compost Facility has operated for over eight (8) years without a significant
shut down. In the unlikely event of a shut down at this facility, the City of Hickory has an
agreement with the Catawba County Landfill which allows Hickory to thicken biosolids to 9.0%
then dispose of directly in land fill cells. This alternative is to meet the emergency backup
operation requirement.
GREATER
HICKORY
METRO