NC0024872_Permit Issuance_20150604

NPDES DOCUHENT SCANNIN`i COVER SHEET
NC0024872
Cooleemee WWTP
NPDES Permit:
Document Type: i
Permit Issuance J
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 4, 2015
This document is printed on reuse paper - igprmore army
content on the resrerse side

NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Johnny Lambert
Director of Public Utilities
Davie County Water System
298 East Depot St., Suite 200
Mocksville, NC27028
Dear Mr. Lambert:
Donald R. van der Vaart
Secretary
June 4, 2015
Subject: Issuance of NPDES Permit
Permit NC0024872
Cooleemee WWTP
Davie County
Class III
SIC 4952
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).
As identified previously, the renewal permit contains the following significant changes
from your current permit:
• Reduction of Effluent Pollutant Scan to three scans in designated years, and the addition of the
second species testing requirement for the next permit renewal. [See Special Condition A. (3)]
• Technical corrections to the Chronic Toxicity special condition narrative and Supplement to
Permit Cover Sheet component list. [See Supplement to Permit Cover Sheet item 1 and Special
Condition A. (2)]
• Addition of electronic Discharge Monitoring Report internet submittal no later than 270 days
from the effective date of this permit. [See Special Condition A. (5)]
• Addition of the reopener special condition for High Rock Lake nutrient TMDL.[See Special
Condition A. (4)]
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
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]
Internet: www.ncdenr.gov
An Equal OpportunitylAffirmative Action Employer

Johnny Lambert, Director of Public Utilities
June 4, 2015
Page 2 of 2
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 any other Federal, State, 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].
Sin erely,
Jay Zimmerman
'rector, Division of Water Resources
Enclosure: NPDES Permit NC0024872
cc: NPDES File
Central Files
Winston Salem Regional Office/Water Quality Programs
ecopy:
EPA Region IV (Subject: SIC 4952)
Email: [e-mail]
WSS/Aquatic Toxicology Branch/Susan Meadows

} Permit NC0024872
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,
Davie County Water System
is hereby authorized to discharge wastewater from a facility located at
Cooleemee Wastewater Treatment Plant
Highway 801
South of Cooleemee
Davie County
to receiving waters designated as the South Yadkin River in the Yadkin Pee -Dee 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 July 1, 2015.
This permit and authorization to discharge shall expire at midnight on June 30, 2020.
Signed this day June 4, 2015.
Jay Zimmerman
Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0024872 '
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.
Davie County Water System
is hereby authorized to:
1. Continue to operate an existing 1.5 MGD wastewater treatment facility with the following
components:
• Mechanical screen (offsite)
• Influent pump station (offsite)
• Influent composite sampler (offsite)
• 3 MG equalization/surge basin with transfer pump
• Two (2) 0.72 MG aeration basins with surface aerators and mixers
• Two (2) 61ft diameter secondary clarifiers with WAS/RAS pumps
• Chlorination system
• 0.055 MG Chlorine contact chamber
♦ • Dechlorination system
• 0.014 MG Dechlorination contact chamber
• Effluent flow meter
• Effluent composite sampler
• 0.216 MG aerobic digester with surface aerator and decant pump
• 1.45 MG sludge solids storage basin
• Land application
Located at Cooleemee Wastewater Treatment Plant, off Highway 801, south of Cooleemee, Davie
County.
2. Discharge wastewater from said treatment works at the location specified on the attached map into
South Yadkin River, classified C waters in the Yadkin Pee- Dee River Basin.
Page 2 of 8

Permit NC0024872
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15 A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge treated municipal wastewater from Outfall 001. Such
discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT
DISCHARGE LIMITATIONS
MONITORING REQUIREMENTS
CHARACTERISTIC
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow
1.5 MGD
Continuous
Recording
Influent or
Effluent
BOD, 5-Day, 20°C 2
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent and
Effluent
Total Suspended Solids 2
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
pH .
Not less than 6.0 S.U. nor greater
than 9.0 S.U.
3/week
Grab
Effluent
• Total Residual Chlorine 3
28 µg/L
3/Week.
Grab
Effluent
Temperature, °C
Monitor and Report
3/Week
Grab
Effluent
NH3 as N, mg/L
Monitor and Report
Weekly
Composite
Effluent
Total Nitrogen, mg/L 4
Monitor and Report
Monthly
Composite
Effluent
Total Phosphorus, mg/L
Monitor and Report
Monthly
Composite
Effluent
Chronic Toxicity 5
Monitor and Report
Quarterly
Composite
Effluent
Effluent Pollutant Scan
Monitor and Report
Footnote 6
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. (5).
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not
exceed 15% of the respective influent value (85% removal).
3. Facility shall report all effluent TRC values reported by a NC certified laboratory including
field certified. However, effluent values below 50 µg/L will be treated as zero for compliance
purposes.
4. Total Nitrogen (TN) = (NO2-N + NO3-N) + TKN, where (NO2-N + NO3-N) and TKN are
Nitrite/Nitrate Nitrogen and Total Kjeldahl Nitrogen respectively.
5. Chronic Toxicity (Ceriodaphnia) @ 2.1%; January, April, July and October, see special
condition A. (2).
6. The permittee shall perform three Effluent Pollutant Scans and four second species toxicity test
during the term of this permit, see special condition A. (3).
b. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 8

Permit NC0024872
A. (2) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 2.1 ° o.
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 January, April, July, and October. These
months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent
sampling for this testing must be obtained during representative effluent discharge and shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina. 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after
the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section at the
address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three month time interval that begins on the first day of the month in which toxicity testing is
required by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an
invalid test and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Page 4 of 8

• Permit NC0024872
A. (3) EFFLUENT POLLUTANT SCAN
[G.S. 143-215.1(b)]
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: 2016, 2017, and 2018. 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 (EPA 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-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWQ Form -A MR-PPA 1 (or in a form approved by the Director) by
December 31S` 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 5 of 8

Permit NC0024872
(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
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
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) Nutrient Reopener for High Rock Lake
[G.S. 143-215.1(b)]
This permit may be reopened and modified to implement nutrient requirements in accordance with any
future TMDL and/or nutrient management strategy for High Rock Lake.
Page 6 of 8

Permit NC0024872
A. (5) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division 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 (Sutiersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall 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 / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Page 7 of 8

•
Permit NC0024872
(Continued A. (5) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS)
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/edtnr
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. I
am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
3. Records Retention [Supplements 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 8 of 8

USGS Quad: D16SE Cooleemee, NC
Outfall Facility
Latitude: 35°48'21.3"N 35°48' 16"N
Longitude: 80° 33' 33.9" W 80° 33' 33" W
Stream Class: C
Subbasin: 03-07-06 HUC: 03040103
Receiving Stream: South Yadkin River
SCALE: 1 in = 24,000 ft
North
Facility Location
Cooleemee WWTP NC0024872
Davie County

NORTH CAROLINA
FORSYTH COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly
commissioned, qualified, and authorized by law to administer oaths, personally
appeared D.H. Stanfield, who being duly sworn, deposes and says: that he is
Controller of the Winston-Salem Journal, engaged in the publishing of a
newspaper known as the Winston-Salem Journal, published, issued and
entered as second class mail in the City of Winston-Salem, in said County and
State: that he is authorized to make this affidavit and sworn statement: that the
notice or other legal advertisement, a true copy of which is attached hereto,
was published in the Winston-Salem Journal on the following dates:
March 27, 2015
and that the said newspaper in which such notice, paper document, or legal
advertisement was published was, at the time of each and every such
publication, a newspaper meeting all the requirements and qualifications of
Section 1-597 of the General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General Statutes of
North Carolina.
This 27th day of March, 2015
(signature of pe son
ng affidavit)
Sworn to and subscribed before me, this 27th day of Mar 2015
Notary
My Commission expires: September 28, 2015
..i
K1MALEY JOHNSON
NOTARY PUBLIC
FORSYTH COUNTY
STATE OF NORTH CAR; LI
MY COMMISSION EXPIRE '
PUBLIC NOTICE
North Carolina Environmental
Management Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a
NPDES Wastewater Permit
The North Carolina Environmental Management
Commission proposes to issue a NPDES wastewa-
ter discharge permit to the person(s) listed below.
Written comments regarding the proposed permit
will be accepted until 30 days after the publish
date of this notice. The Director of the NC Division
of Water Resources (DWR) may hold a public hear-
ing should there be a significant degree of public
interest. Please mail comments and/or informa-
tion requests to DWR at the above address. Inter-
ested persons may visit the DWR at 512 N. Salis-
bury Street, Raleigh, NC to review information on
file. Additional information on NPDES permits and
this notice may be found on our website: http://
portal.ncdenr.org/web/wq/swp/ps/npdes/calen
dar, or by calling [phone].
Davie County Water System requested renewal of
permit NC0024872 for Cooleemee WWTP in Davie
County; this permitted discharge is treated muni-
cipal wastewater to South Yadkin River, Yadkin
Pee -Dee River Basin.
WSJ: March 27, 2015

Berry, Ron
From: John Grey <[e-mail]>
Sent: Wednesday, October 22, 2014 8:46 AM
To: Berry, Ron
Cc: Johnny Lambert; Joy Howard
Subject: Waste flow characteristics at Cooleemee WWTP
Mr. Berry,
I received remediation well data from Ingersoll Rand and it appears that this flow accounts for approximately 18,000
gallons per day whereas the Cooleemee water treatment plant flow accounts for approximately 140.000 gallons per day.
I will forward you the detailed information provided by Ingersoll for your records.
Thanks
John Grey
1

Berry, Ron
From: Berry, Ron
Sent: Friday, October 03, 2014 3:48 PM
To: 'Johnny Lambert'
Cc: Mickey, Mike
Subject: Request for information for NPDES permit renewal Cooleemee WWTP NC0024872
Tracking:
Mr. Lambert:
Recipient Delivery Read
'Johnny Lambert'
Mickey, Mike Delivered: 10/3/2014 3:48 PM Read: 10/3/2014 3:51 PM
Part of the evaluation for the NPDES renewal requires review of all reported data. There were several suspect
inconsistency in the Pretreatment DMR data reported that may be the results of unit of measurement errors, data entry
errors, or they are correct. Please review the list below, advise and correct where needed:
1) All the reported July 2013 data values, reported on the 15t and 9th , are identical except for the less than
designation, is this correct?
2) The Silver values reported on the 2/5/14, 4/22/14,7/23/14 are Tess than but are different values of 0.03 mg/L,
0.003 mg/I, 0.03 mg/L respectively, are they correct?
3) The Chromium value reported on 10/28/13 is 0.010 mg/L with NO less than designation, the value reported on
2/5/15 is 0, the value reported on 4/22/14 is 0.03 mg/L with less than designation, the value reported on
7/23/14 is 0.2 mg/L with a less than designation, are these correct?
4) The Lead values reported on 2/5/14, 4/22/14, 7/23/14 are 0.03 mg/L with less than designation, are they
correct?
5) The Nickel value reported on 2/5/14 is 0.3 mg/L with a less than designation, is this correct?
6) The Molybdenum values reported on July 2013 are 2.5 mg/L with less than designation, is the unit of
measurement correct?
7) The Cyanide value reported on 7/23/14 is 0.05 mg/L with a less than designation, is this correct?
8) The Selenium value reported on 7/23/14 is 0.05 mg/L with a less than designation, is this correct?
In addition, we are implementing the US EPA State wide Mercury TMDL. This requires 5 years of Mercury data using
Method 1631E to assess a domestic facility permit for Mercury requirements. If sufficient data is not available then
quarterly monitoring will most likely be required until the next renewal to provide data for evaluation. I noted you had
applicable data available from the majority of reported Pretreatment data (no Mercury reported on the July 2013
report) and in the Annual Pollutant Scans for 2010, 2011 (scans in 2012, 2013 used wrong test method, cannot use
data). Do you have any other effluent Mercury data that was sampled in 2009 (possibly annual scan) or 2012 that used
Method 1631E?
Upon review of our records I could not locate the December 2012 DMR, please provide a copy. A scan copy attached to
an email is acceptable.
As part of the renewal application the Division requires submittal of a Sludge Management Plan with the
application. Please provide the Plan, scanned copy via email is acceptable. Also, we are requesting a more detailed
description of the facility influent sources, for example best estimate percentage on domestic waste, industrial waste,
ground water remediation. If the industrial wastewater is a combination of general industrial waste, domestic waste
from the industry, and /or remediation waste from the industry then just state what makes up the combination and
indicate the combined industrial percentage.
1

1 Samples for July 2013 were taken on the 29th, results are:
Silver < 0.00025 mg/I
Cadmium < 0.001 mg/I
Chromium 0.004 mg/I
Copper < 0.05 mg/I
Lead 0.003 mg/I
Nickel 0.0054 mg/I
Zinc 0.097 mg/I
Molybdenum < 2.5 ug/I
Total Arsenic < 0.005 mg/I
Total Cyanide < 0.005 mg/I
Selenium < 0.005 mg/I
Mercury 12.7 ng/I sm 1631 tested 7/31
2 Silver
2/5/2014 <
4/22/2014 <
7/23/2014 <
0.0025 mg/I
j.0025 mg/I
3.0025 mg/I
3 Chromium
10/28/2014 0.014 mg/I
2/5/2014 < 0.0025 mg/I
4/22/2014 < 0.0025 mg/I
7/23/2014 < 0.0025 mg/I
Lead
2/5/2014 < 0.0025 mg/I
4/22/2014 < 0.0025 mg/I
7/23/2014 < 0.0025 mg/I
Nickel
2/5/2014 < 0.0025 mg/I
Molybdenum
7/29/2013 < 2.5 ug/I
Cyanide
7/23/2014 < 0.005 mg/I
Selenium
7/23/2014 < 0.005 mg/I

NPDES Permit #NC0024872
Discharge N. 1, • Class 3
Certified Laboratories Statesville Analytical
Person(s)6 Collecting Samples: Eric Moten
l�tz ,�,yt r t ..
County Davie Phone: [phone]
lets to8 DQs o th i t m kna�riledc e
torgnarure ar operator to mespans+bte Charge) i.Liame y 1
O
to
0
o
eeepaa
Q
0
i
O
O
M
o
t'r3
0
O
CO
•
O
C
0
Operator Arrival Time
Operator Time on Site
ORC On Site?
a
FS
L
Temperature Celsius
2
C
Residual Chlorine
1.
0
W2
c
0
ca
2
2
E
¢
Total Suspended Residue
E
0
•-
1.L
C
_ 1-
total Nitrogen
Total Phosphorous
`.RE.
NFti,
.1;5
..,.yam
..
.. 'e
- st
te4.1
',,
',Oe
p; t_ or.!
1, GPM3
l iqy`'
my
1
0.434
2
0.490
3
800
w
4.00
Y
0 457
14
.
4
800
4.00
Y
0.499
14
6.14
20
3.7
< 0.5
< 2.8
1
1 01
4.8
5
800
4.00
Y
0.368
9
6.02
20
2 8
< 2.8
5
6
800
4.00
Y
0.428
10
6.09
20
4 2
4.8
32
7
800
4.00
0 441
10
8
0.400
9
0.390
10
800
4.00
Y
0.490
10
6.42
20
11
800
4.00
Y
0.389
10
6.09
20
5.7
< 0.5
5.18
5
12
800
4.00
Y
0.404
8
6.17
20
2.8
4.19
1
_
13
800
4.00
Y
0.433
8
5.8
7.25
1
14
800
4.00
Y
0 473
10
15
0.520
_
16
0.891
17,
800
4.00
Y
0.482
8
18
800
4.00
Y
0.512
11
6.03
20
< 2
< 0.5
6.8
1
19
800
4.00
Y
0.488
11
6 14
20
5.5
13.3
1
20
800
4.00
Y
0.477
7
6.28
20
< 2
13
1
21
800
4.00
Y
0.476
7
22
0.427
23
0.486
_
24
Holiday
0.503
20,
0.835
27
800
2.00
0
0.698
8
6.11
20
r.
5 1
224
18.2
17
28
800
2.00
0
0.566
7
6.2
20
6.8,
24
3
29
0.419
_
30
0.393
31
800
4.00
Y
0.398
8
Average
. S
�.ua44
32
:c
.:I :<.:
:, 225
Z� y0!a:a:
2 :12:5!::...
-c-v;v
tit
4
Maximum
_ Fir,
14
6.4
; s _
24
2 _
• 2
4 :_
V i
4 Y
Minimum
z :<.,±
4; c,
a
a =>
; $
> `
< 111
:a
Comp (C) / Grab (G)
c
r.
..x
~.=
r
c,
Weekly Avg.
Monthly Avg.
3=. rrc1
7.C.'''
Y=ORC
B=Back up ORC
0=other oprerator
YELLOW=HOLIDAY

COOLEEMEE
Month: Dec Year:2012
NPDES Permit #NC0024872
Discharge No. 001
Class 2
County Davie Grade 3
Phone: [phone]
0
O
0
O
Total Suspended Residue
<
rngll
-
rltqii
. 2
..-��
4U23L11V101
12.
10
14
15
16
17
•
I
22
23
24
25
26
28
29
Average
88 8
85 4
Maximum
O.00O
194
212
Minimum
0 0O0
18.2
la 3
Como ;Cif Grab tG!

6
;ieilit% Stably: t Please ehec:h one of the follow ifl:! )
All monitoring data and samplirie Irequencies meet permit requirements
I I
( ompliant
All monitoring data and s.tnipllllt frequencies c10 \(.) I meet perillit requirements
Noncompliant
If the tacilit' is noncompliant. pleas:: comment on Corre,:titc actions being taken in respect 1►► equipment. operation. tilaintenance. etc..
and a timetable ahle tier improvements to he made.
On 12/' /2012Statesrille Analytical the lab that we use to process our samples mode tt mistake and hit the samples that lee pulled
on 12/27/21112 on the transport vehicle over With: thus making all o1'mi. samples out o1•compliant hold and causin2 me to he non
compliant for this month. 1 have a letter Iron) the lab stutin;; this and if you need a cony t/'this letter 1 rt•il forward it to you. !iron
have anymore tluestions or concerns about thit" incident please (iv! free to cull me 336-477-5II96 or.L36- 284-6680
"I <eitii'c. under perialn% of law. that this document and all att<rchment• were prepared under in direction or superb accordance
with a s)sten) designed to assure that qualified personnel properly +athcr and esalu.ite the information submitted. Based (1) in'
inquire of the person or persons tt1)0 lllatla�ce the stem. or those persons directlresponsible for gathering the information. the
information submitted It, to the hest ot`itl•
c t ivnt Iedee and belief. true. accurate. and complete. 1 am aware that there are significant
penalties for suhinittinu talc information. including the pussibilit of Imes ;nld imprisonment for knowing ' iolations.•'
Pcrmiitec Address
Pennine (Please print or is pc) Countof 1)a% ic'
Signature of t'crnlitiee
Phone Number
Pt_) BOX 768 Coolecmec \C 27014 336-284-20 8
i'.AR&METER CODES
(10010 1 enrperaturc
00076 1 urbidit)
0OO80 Color t Pi-Cni
00082 (.'olor (A1)\11)
00095 Conduct)' ill
00300 Dissolt cd t )xv n
00310 lit 1)5
00:40 COD.)
00400 p11
00530 Total Suspended Residue
00545 Seitleable Matter
00556 Oil & Grease
O0600 total N itroeen
00610 Ammonia \ itroicn
00f►2 = total is jcldhal Nitrogen
00630 \itnties \itritcs
00665 Total Phosphorous
00720 (.%anlde
00745 Iota! Sulfide
00')2' I owl Magnesium
00929 total Sodium
(1O1)40.) Iota! Chloride
(H)9151 total I lu►►ride
01(102 tout \r ettie
010' 7 Cachn iuin
Mite ._..
Permit Exp. Date
-) .+0 2014
0 10.E_2 11exa‘ alcnt Chromium
O 10 34 Chromium
010:7 loud Cohalt
01042 topper
01045 Iron
0105I Lead
01007 \ icl.cl
01077 Silver
O1092 zinc
() I 1 05 Aluminum
OI 147 focal Selenium
31616 I eca1 C'oliti►rtn
32730 Total Phenolic.
34235 13eniene
34481 toluene
:8260 %I13IS
39516 VCRs
5(H)5o Ho"
5(1060 loud
Residual Chlorine
71880 fo►rmaldeh\de
71 900 Mercury
81551 Icnc
Parameter Code assistance tlias he obtained callin`_ the Water Qua$itCompliance Group at (919) 73 :-508?. extension 581 or 534.
The monthly avera c ii,r fecal coil form is to he reported as a (il:OML:1 1(1(. mean. list: units designated in the reporting
iiteilii)'s permit for reportinte data.
'"()RC must isit iacilits and document . isitat ion of ta:ilitas required per 15:\ N('-1C $A.0202 (b) (5) (tit.
sa If signed h) other than the pennittec. delegation ol. si hatch aulho►rit) must be on the ith the state per 15:\ NCAC 213 .0506 (hi
(2)(D)

zois ge rtekixe
DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NC0024872
Facility Information
Applicant/Facility
Name:
Davie County Water System/Cooleemee WWTP
Applicant Address:
298 East Depot Street, Suite 200; Mocksville, NC 27028
Facility Address:
Hwy 801 south of Cooleemee
Permitted Flow:
1.5 MGD
Type of Waste:
80% domestic/20% industrial (non -domestic)
Facility/Permit Status:
Class III /Active; Renewal
County:
Davie County
Miscellaneous
Receiving Stream:
South Yadkin
River
Stream Classification:
C
Subbasin:
03-07-06
Index No.:
12-108-(19.5)
Drainage Area (mi2):
564
HUC:
03040103
Summer 7Q10 (cfs):
106
303(d) Listed?:
No
Winter 7Q10 (cfs):
180
Regional Office:
Winston-Salem
30Q2 (cfs):
-
State Grid / USGS
Quad:
D16SE
Cooleemee, NC
Average Flow (cfs):
649
Permit Writer:
Ron Berry
IWC (%):
2.1
Date:
3/23/15
Background and History
The Davie County Water System operates the regional 1.5 MGD Cooleemee wastewater
treatment facility that serves the communities of Cooleemee and Mocksville, total population
2,900. In addition, the facility maintains a modified pretreatment permit and accepts 7,000 gpd of
wastewater from Ingersoll Rand a non -categorical SIU, 14 gpm of recovered ground water from
a permitted RCRA site, and intermittent 0.14 MGD backwash/rinse wastewater from a
conventional WTP.
The facility was original designed for 3.5 MGD, however, in 1983 with less than expected
influent flows and loading, the facility's permitted flow was reduced to 1.5 MGD. Any future
expansion beyond 1.5 MGD will be considered a new expansion discharge and will require a
major permit modification (flow justification, EAA). A refurbishment of treatment components
was conducted in 2002 to address compliance issues. In 2009 Mocksville's domestic wastewater
became part of the facility influent, and the 0.25 MGD Bear Creek WWTP that was serving
Mocksville was decommissioned, its NPDES permit rescinded.
From 2004 through 2014 the annual average flow was 0.51 MGD with the highest annual
average flow 0.63 MGD in 2010 and lowest annual average flow 0.39 MGD in 2006. The flow
history shows significant episodic high daily discharge events.
The last permit renewal was issued in 2009. The only change from the previous permit was the
removal of the TRC compliance date. The 1986 USGS stream data was used to calculate an IWC
of 2.1% and other dilution factors where warranted.
Davie County Water System is a member of the Yadkin -Pee Dee River Basin Association. The
Cooleemee treatment facility discharges treated domestic/industrial wastewater to South Yakin
River, upstream of High Rock Lake, a class C water in the Yadkin Pee Dee River Basin.
Fact Sheet
NPDES NC0024872
Page 1 of 4

Current Effluent Characteristics
Data was reviewed from DMRs for the period of November 2010 to August 2014 and from four
annual Priority Pollutant Analyses. The highest monthly average flow 0.73 MGD occurred in
July 2013 and was 49% of the permitted flow, The reviewed data is summarized in Table I
Limited Parameters, Table II Detected Metals (Other Pollutants), and Table III Nutrients below:
Table I Limited Parameters *based on monthly average
Flow*
(MGD)
BOD*
(mg/L)
TSS*
(mg/L)
NH3-N*
(mg/L)
*Fecal
Cohform
(#//100 ml)
pH
(S.U.)
TRC
(µid')
Average
0.567
5.16
8.43
0.68
54.51
6.68
17.2
Maximum
0.73
20.8
17.6
_ 2.4
523.5
8.2
25
Minimum
0.43
2.2
2.9
< 0.5
1.5
6.0
< 1
Percent Removal: Based on BOD 79.7% - 99.6%, Based on TSS 81.3% - 97.9%
Table II Detected Metals (Other Pollutants
Metal (Pollutant)
Data Range
Cadmium, µg/L
no detect - 2
Chromium, µg/L
no detect -14
Copper, µg/L
no detect -16.9
Lead, µg/L
no detect - 3
Mercury, ng/L
3.34 -11.20
Nickel, µg/L
no detect - 5.4
Total Phenolic Compounds, µg/L
no detect - 5.7
Zinc, µg/L
no detect - 166
Bromodichloromethane, µg/L
no detect - 7.22
Dibromochloromethane, µg/L
no detect -1.4
Chloroform, µg/L
10 - 54
Table III Nutrients
Total Nitrogen, mg/L
0.8 - 33.0
Total Phosphorus, mg/L
1.2 - 7.0
As part of the RCRA permit, sampling for tetrachloroethene (PCE) and trichloroethene (TCE)
were conducted in 2013 on the ground water recovery wells RA-2A and RA-3. PCE was not
detected but TCE was detected at 212 µg/L in RA-2A and 351 µg/L in RA-3. These TCE levels
are considered typical based on historical well data. The RCRA ground water system makes up
3% (14 gpm) of the total WWTP influent. PCE and TCE were analyzed as part of the facility
annual effluent Priority Pollutant Analysis and all data was below the minimum detection limit.
Evaluation of Compliance Data
DMRs were reviewed since the last renewal, 2009, and there were 4 permit limit violations for
BOD and TSS, last compliance violation in March 2014. There were various minor reporting
violations for not meeting the flow monitoring frequency requirement. No penalties were
accessed. Winston-Salem Regional Office completed a site inspection in February 2015 and
recommends renewing this permit.
The facility has conducted 22 chronic toxicity tests at 2.1% concentration using ceriodaphnia
since August 2009 and continues to pass all tests. As further evidence of no toxicity issues, the 4
second species chronic toxicity tests submitted with the renewal application at 2.1% using
fathead minnows were passed.
Fact Sheet
NPDES NC0024872
Page 2 of 4

Reasonable Potential (RP) Analysis and Effluent Pollutant Scans
Metal data from DMRs and four Effluent Scans submitted since November 2010 was reviewed.
There were less than detection levels for Ar, Be, CN, Mo, Se, and Ag in the effluent samples.
A RP Analysis was performed on detected metal levels of Cd, Cr, Cu, Pb, Ni, and Zn. In all
cases no reasonable potential to violate water quality standards were shown, and the predicted
value was less than 50% of the allowable concentration, therefore no changes will be made in
this permit. Monitoring as required by the Pretreatment program will continue.
The Effluent Pollutant Scans indicated detected levels of Chlorodibromomethane,
Bromodichloromethane, Chloroform, Chlorinated Phenolic Compounds, and Total Phenolic
Compounds. A RP analysis was performed on the limited data set. In all cases no reasonable
potential to violate water quality standards were shown, and the predicted value was less than
50% of the allowable concentration, therefore no further action was warranted.
See the Reasonable Potential Analysis following the fact sheet for a summary and effluent data
used in the analysis.
Mercury TMDL Evaluation
A mercury TMDL was approved by US EPA in October 2012 and was implemented in this
permit. Table IV summarizes the available mercury data used to conduct the mercury TMDL
evaluation:
Table t V : Mercury Lata o LilLISLIUb LII J .L 1...., 1 A-r,
2010
2011
2012*
2013
2014
# of Samples
1
1
1*
2
3
Annual Average<1
Concentration, ng/L
11.2
3.3
o]
Method
Met
7470A
8.7
7.0
Maximum Sample
Result, ng/L
11.2
3.3
[0]
m<17ethod
7470A
12.7
11
TBEL, ng/L
47
WQBEL, ng/L
559
*Different test method not used in TMDL evaluation — no detect
Per mercury TMDL guidance, if the TBEL is more stringent than the WQBEL and there is no
exceedance by any annual average of the TBEL in the last 5 years, as in this case, then mercury
monitoring (Method 1631E) conducted in the 3 required PPAs is sufficient. Additional quarterly
mercury analyses generated as part of the modified STMP will continue. Since this facility is a
major municipal with a permitted flow less than 2 MGD, a mercury minimization plan is not
required.
High Rock Lake
A reopener special condition was added to allow implementation of the High Rock Lake nutrient
TMDL in the future.
Fact Sheet
NPDES NC0024872
Page 3 of 4

Bases for Permit Effluent Limits/Monitoring
EFFLUENT
CHARACTERISTICS
LIMITS
RATIONAL
Monthly
Average
Weekly
Average
Daily
Maximum
Flow
1.5 MGD
15A NCAC 02B .0400 at seq.,
02B .0500 et seq.
BOD, 5-Day, 20° C
(85%removal)Municipal
30.0 mg/L45.0
mg/1_,
15A NCAC 02B .0406 for
Wastewater
Total Suspended Solids
(85% removal)
30.0 mg/L
45.0 mg/L
15A NCAC 02B .0406 for
Municipal Wastewater
Fecal Coliform
(geometric mean)
200/100
mL
400/100
mL
15A NCAC 02B .0211
pH
Not less than 6.0 S.U. nor greater
than 9.0 S.0
15A NCAC 02B .0211
Total Residual Chlorine
28 µg/L
15A NCAC 02B .0211
Temperature, °C
15A NCAC 02B .0211
NH3 as N, mg/L
15A NCAC 02B .0500 et seq.
Total Nitrogen, mg/L
15A NCAC 02B .0500 et seq.
Total Phosphorus, mg/L
15A NCAC 02B .0500 et seq.
Chronic Toxicity
Pass — 2.1% concentration
15A NCAC 02B .0200 et seq.
Effluent Pollutant Scan
G.S. 143-215.1(b)
Summary of Proposed Changes
1. Modification of Effluent Pollutant Scan special condition to specify the three years for
sampling and the 2nd species testing requirements.
2. Modification of special condition Chronic Toxicity test narrative to update version.
3. Modification of Supplement to Permit Cover Sheet narrative to update component list.
4. Addition of electronic DMR requirement.
5. Addition of High Rock Lake reopener special condition.
Proposed Schedule for Permit Issunace
Draft Permit to Public Notice: March 25, 2015
Permit Scheduled to Issue: May 2015
State Contact
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Berry at [phone] or email [e-mail].
Name: Date: 3 Z36
Comments
Fact Sheet
NPDES NC0024872
Page 4 of 4

Cooleemee WWTP
NC0024872
Qw (MGD) = 1.50
IQIOS(cfs)= 86.49
7Q10S (cfs)= 106.00
7QIOW (cfs) = 180.00
30Q2 (cfs) = 0.00
Avg. Stream Flow, QA (cfs) = 649.00
Receiving Stream: South Yadkin River
2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: III
IWC @ IQ10S = 2.617801%
IWC @ 7Q10S = 2.146319%
IWC @ 7QIOW = 1.275195%
IWC @ 30Q2 = 100.00000%
IWC @ QA = 0.356965%
Stream Class: C
Outfall 001 t
Qw=1.5MGD
PARAMETER
APE
(1)
STANDARDS & CRITERIA (2)
a
0
n
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS / Applied '/A FAV /
Chronic Standard Acute
n # Det. Max Pred Allowable Cw
Cw
Arsenic
Arsenic
C
C
50 FW(7Q10s)
10 HH/WS(Qavg)
ug/L
ug/L
0 0
0 0
N/A
N/A
Acute: NO WQS
___ _ __—_ _ _ _---
Chronic: 2,329.E
Chronic: 2,801.4
- - -------
no detects — — — — — — —
—
no detects
Beryllium
NC
6.5 FW(7Q10s)
ug/L
0 0
N/A
Acute: NO WQS
Chronic: 302.8
no detects - — _ --- — -_--
Cadmium
NC
2 FW(7Q10s) 15
ug/L
9 2
Note: n <_ 9
Limited data set
4.5
Default C.V.
Acute: 573.0
_-----
Chronic: 93.2
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw -
continueSTMP monitoring -_------
No RP, Predicted Max < 50%'of Allowable Cw-
continue STMP monitoring
Chlorinated Phenolic Compounds
NC
. 1 A(30Q2)
ug/L
0 0
N/A
Acute: NO WQS
_____________0 Chronic: 1---
_
_nadefects----- —--------- ---
Total Phenolic Compounds
NC
300 A(30Q2)
ug/L
3 2
Note: n <_ 9
Limited data set
32.1
Default C.V.
Acute: NO WQS
-__ _ __—_—__ __-----_—__
Chronic: 300.0
No value > Allowable Cw
'
_ _ _ --— ----
No RP, Predicted Max < 50% of Allowable Cw- No
Monitoring required
Chromium
NC
50 FW(7Q10s) 1022
ug/L
9 3
Note: n <_ 9
Limited data set
25.3
Default C.V.
Acute: 39,040.4
_-_ _ ---
Chronic: 2,329.E -
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw -
continue STMP monitoring -_--_—
Na RP, Predicted Maio < 509E of Allowable Cw -
•
continue STMP monitoring
Copper (AL)
NC
7 FW(7Q10s) 7.3
ug/L
9 3
Note: n 5 9
Limited data set
45.3
Default C.V.
Acute: 278.9
Chronic: 326.1
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw-
continue STMP monitoring : _ _
No RP, Predicted Max < 50% of Allowable Cw
continua STMP monitoring
Cyanide
NC
5 FW(7Q10s) 22
10
ug/L
0 0
N/A
Acute: 840.4
_ _ _ _ _----- _ _---
Chronic:233.0
•
no defects
_ _ _
no detects-------- -------------
Lead
NC
25 FW(7Q10s) 33.8
ug/L
9 3
Note: n <_ 9
Limited data set
5.4
Default C.V.
Acute: 1,291.2
-
Chronic: 1,164.8
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw -
continue STMP monitoring
No RP, Predicted Max <5036 of Allowable Cw
continue STMP monitoring
Page 1 of 2
9595 FRESHWATER RPA2014 32.xlsm, rpa
3/17/2015

Cooleemee WWTP
NC0024872
2014 Freshwater RPA - 95% Probability/95% Confidence
Outfall 001
w =1.5 MGD
Mercury
NC
12 FW(7Q10s)
0.5
ng/L
0 0
N/A
Acute: NO WQS
___ _ _______ _____
Chronic: 559.1
_ _ _ _ _____ _ _______
SEE MTDL EVALUATION -
Molybdenum
NC
2000 HH(7Q10s)
ug/L
0 0
N/A
Acute: NO WQS
- -_ _ _ ---- _ _ __
Chronic: 93,182.8
no detects
_ _ _ ----------------_—_---
no detects
Nickel
NC
88 FW(7Q10s) 261
ug/L
9 9
Note: n <_ 9
Limited data set
9.8
Default C.V.
Acute: 9,970.2
-
Chronic: 4,100.0
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw -
continue STMP monitoring
No RP, Predicted Max < 50% of Allowable Cw
continue STMP monitoring
Selenium
NC
5 FW(7Q10s) 56
ug/L
0 0
N/A
Acute: 2,139.2
_ _ _ _ _
-- Chronic: ---------------detects----------------------
no detects
_ _
Silver (AL)
NC
0.06 FW(7Q10s) 1.23
ug/L
0 0
N/A
Acute: 46.986
__ _ _--_---- --- -
Chronic: 2.795
no detects
----- --- ---------- ----- ----
no detects
Zinc (AL)
NC
50 FW(7Q10s) 67
ug/L
9 8
Note: n 5 9
Limited data set
300.5
Default C.V.
Acute: 2,559.4
Chronic: 2,329.6
No value > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw -
continue STMP monitoring
No RP, Predicted Max < 50% of Allowable Cw
continue STMP monitoring
chlorodibromomethane
C
13 HH(Qavg)
µg/L
4 1
Note: n <_ 9
Limited data set
6.47500
Default C.V.
Acute: NO WQS
- _ _ _ _ _ _ _ _ _ _ _ _
Chronic: 3641.81720
No value > Allowable Cw
_ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw- No
Monitoring required, part of PPA
bromodlchloromethane
C
170 HH(Qavg)
µg/L
4 3
Note: n <_ 9
Limited data set
18.69980
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 47623.76344 -
No value > Allowable Cw
_ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required, part of PPA
chloroform
C
17 HH(Qavg)
µg/L
4 4
Note: n <_ 9
Limited data set
139.86000
Default C.V.
Acute: NO WQS
_ _ _ _ _ _ _ _ _ _ _ _
Chronic: 4762.37634
No value > Allowable Cw
_ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required, part of PPA
Page 2 of 2
9595 FRESHWATER RPA2014_32.xlsm, rpa
3/17/2015

REASONABLE POTENTIAL ANALYSIS
4
Cadmium
Date Data BDL=1/2DL Results
1 11/16/2010 < 5 2.5 Std Dev.
2 10/21/2011 < 5 2.5 Mean
3 11/19/2012 < 0.36 0.18 C.V. (default)
4 7/29/2013 < 1 0.5 n
5 10/28/2013 2 2
6 11/12/2013 < 0.36 0.18 MuIt Factor =
7 2/5/2014 2 2 Max. Value
8 4/22/2014 < 1 0.5 Max. Pred Cw
9 7/23/2014 < 1 0.5
10
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
7
Total Phenolic Compounds
1.0131
1.2067
0.6000
9
1.81
2.5 ug/L
4.5 ug/L
Date Data BDL=1/2DL Results
1 11/16/2010 10.7 10.7 Std Dev.
2 10/21/2011 5.7 5.7 Mean
3 11/19/2012 < 20 10 C.V. (default)
4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
8
Chromium
2.7074
8.8000
0.6000
3
3.00
10.7 ug/L
32.1 ug/L
Date Data BDL=1/2DL
1 11/16/2010 < 10 5
2 10/21/2011 < 10 5
3 11/19/2012 < 1 0.5
4 7/29/2013 4 4
5 10/28/2013 10 10
6 11/12/2013 14 14
7 2/5/2014 < 2.5 1.25
8 4/22/2014 < 2.5 1.25
9 7/23/2014 < 2.5 1.25
10
-2
3/25/2015
9595 FRESHWATER RPA2014_32.xlsm, data

REASONABLE POTENTIAL ANALYSIS
Results
Std Dev.
Mean
C.V. (default)
n
Mult Factor =
Max. Value
Max. Pred Cw
Use"PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
9
Copper (AL)
4.5907
4.6944
0.6000
9
1.81
14.0 ug/L
25.3 ug/L
Date Data BDL=1/2DL Results
1 11/16/2010 11 11 Std Dev.
2 10/21/2011 < 10 5 Mean
3 11/19/2012 16.9 16.9 C.V. (default)
4 7/29/2013 < 50 25 n
5 10/28/2013 < 50 25
6 1.1/12/2013 7.47 7.47 Mult Factor =
7 2/5/2014 < 50 25 Max. Value
8 4/22/2014 < 50 25 Max. Pred Cw
9 7/23/2014 < 50 25
10
Use "PASTE SPECIAL•
Values'. then "COPY"
. Maximum data
points = 58
Lead
8.4693
18.3744
0.6000
9
1.81
25.0 ug/L
45.3 ug/L
Date Data BDL=1/2DL Results
11/16/2010 < 5 2.5 Std Dev.
10/21/2011 < 5 2.5 Mean
11/19/2012 < 1.9 0.95 C.V. (default)
7/29/2013 3 3 n
10/28/2013 3 3
11/12/2013 < 2.1 1.05 Mult Factor =
2/5/2014 < 2.5 1.25 Max. Value
4/22/2014 < 2.5 1.25 Max. Pred Cw
7/23/2014 2.5 2.5
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 58
15
0.8573
2.0000
0.6000
9
1.81
3.0 ug/L
5.4 ug/L
Date Da
1 11/16/2010 <
2 10/21/2011 <
3 11/19/2012 <
4 7/29/2013
5 10/28/2013
6 11/12/2013
7 2/5/2014 <
8 4/22/2014
9 7/23/2014
10
9595 FRESHWATER RPA2014_32.xlsm, data '
- 3 - 3/25/2015

REASONABLE POTENTIAL ANALYSIS
Nickel
to BDL=1/2DL Results
10.0 5 Std Dev.
10.0 5 Mean
3.4 1.7 C.V. (default)
5.4 5.4 n
3.0 3
1.9 1.9 Mult Factor =
2.5 1.25 Max. Value
3.0 3 Max. Pred Cw
4.0 4
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
18
Zinc (AL)
1.5632
3.3611
0.6000
9
1.81
5.4 ug/L
9.8 ug/L
Date Data BDL=112DL Results
1 11/16/2010 58 58 Std Dev.
2 10/21/2011 69 69 Mean
3 11/19/2012 166 166 C.V. (default)
4 7/29/2013 97 97 n
5 10/28/2013 100 100
6 11/12/2013 74.9 74.9 Mult Factor =
7 2/5/2014 84 84 Max. Value
8 4/22/2014 < 50 25 Max. Pred Cw
9 7/23/2014 74 74
10
Use "PASTE SPECIAL.
Values" then "COPY"
. Maximum data
points = 68
19
chlorodibromomethane
38.2533
83.1000
0.6000
9
1.81
166.0 ug/L
300.5 ug/L
Date Data BDL=1/2DL Results
1 11/16/2010 < 5 2.5 Std Dev.
2 10/21/2011 < 5 2.5 Mean
3 11/19/2012 < 0.17 0.085 C.V. (default)
4 11/12/2013 1.4 1.4 n
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
Use "PASTE SF
Values" then "I
. Maximum t
points = 5
1.1480
1.6213
0.6000
4
2.59
2.500000
6.475000
-4-
9595 FRESHWATER RPA2014_32.xlsm, data
3/25/2015

REASONABLE POTENTIAL ANALYSIS
ECIAL
COPY"
20
bromodichloromethane
_ Date Data BDL=1/2DL Results
1 11/16/2010 7.22 7.22 Std Dev.
2 10/21/2011 < 5 2.5 Mean
3 11/19/2012 2.2 2.2 C.V. (default)
4 11/12/2013 4 4 n
5
6 Mult Factor =
ug/L 7 Max. Value
pg/L 8 Max. Pred Cw
9
10
Use 'TASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
21
chloroform
2.2990
3.9800
0.6000
4
2.59
7.220000 pg/L
18.699800 pg/L
Date Data BDL=1/2DL Results
1 11/16/2010 54 54 Std Dev.
2 10/21/2011 27.5 27.5 Mean
3 11/19/2012 10 10 C.V. (default)
4 11/12/2013 10 10 n
5
6
7
8
9
10
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
20.7901
25.3750
0.6000
4
Mult Factor = 2.59
Max. Value 54.000000 ltg/L
Max. Pred Cw 139.860000 pg/L
9595 FRESHWATER RPA2014_32.xlsm, data
- 5 - 3/25/2015

NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
PERMIT WRITERS - AFTER you get this form back
Check that
f
from PERCS:
all apply
Notify PERCS if LTMP/STMP data we said should be
Date of Request
10/2/2014
municipal renewal
x
on DMRs is not really there, so we can get it for you
Requestor
Ron Berrry
new industries
(or NOV POTW).
Facility Name
Cooleemee WWTP
WWTP expansion
- Notify PERCS if you want us to keep a specific POC
Permit Number
NC0024872
Speculative limits
in LTMP/STMP so you will have data for next permit
ReRegion
9
Winton -Salem
stream reclass.
renewal.
- Email PERCS draft permit, fact sheet, RPA.
Basin
Yadkin Pee Dee
outfall relocation
- Send PERCS paper copy of permit (w/o NPDES
7Q10 change
boilerplate), cover letter, final fact sheet. Email RPA if
other
changes.
other
check
applicable PERCS staff:
Other Comments to PERCS:
BRD, CPF, CTB, FRB, TAR - Sarah Morrison (6310)
X
CHO, HIW, LTN, LUM, NES, NEW, ROA, YAD
- Monit Hassan (6314)
PERCS
Status
PRETREATMENT STAFF COMPLETES THIS PART:
of Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE
2) facility has no SIU's, does not have Division approved Pretreatment Program
V%
3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV" if program still under development)
3a) Full Program with LTMP
`/'
3b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below
Flow, MGD
Permitted
Actual
Time period for Actual
STMP time frame:
Industrial
b, 0' 2-
Most recent:
Uncontrollable
n/a
Next Cycle:
POC in LTMPI
STMP
Parameter of
Concern (POC)
Check List
POC due to
NPDES/ Non-
Disch Permit
Limit
Required by
EPA*
Required
by 503
Sludge'
POC due
to SIU"'
POTW POC
(Explain
below)""
STMP
Effluent
Freq
LTMP
Effluent
Freq
BOD
V
4
Q M
TSS
VV
4
Q M
Q= Ill,
NH3
V
4
Q M
M= on y
Arsenic
1/
4
Q M
l
Cadmium
a
4
Q M
i
Chromium
-4v
\/
4
Q M
V
Copper
4
V
1/
4
Q M
Cyanide
4
Q M
Is all data on DMRs?
.I
Lead
d
k/
4
Q M
YES
Mercury
4
Q M
NO (attach data)
Molybdenum
4
Q M
-I
Nickel
-4
V
✓
4
Q M
Silver
Selenium
N
4
Q M
'J
Zinc
-1
1/
4
Q M
Is data in spreadsheet?
Total Nitrogen
4
Q M
YES (email to writer)
Phosphorus
%/
4
Q M
NO
4
Q M
4
Q M
4
Q M
4
Q M
*Always in the LTMP/STMP
" Only in LTMP/STMP if sludge and app or composte (dif POCs for incinerators)
—*Only in LTMP/STMP while SIU still discharges to POTW "" Only in LTMP/STMP when pollutant is still of concern to POTW
Comments to Permit Writer (ex., explanation of any POCs; info you have on IU related investigations into NPDES problems):
PERC NPDES_Pretreatment request form iuIy2007.xlsx
Revised: July 24, 2007

10/22/14 WQS = ' 12 ng/L MERCURY WQBEL/TBEL EVALUATION V:2013-6
Facility Name Coleemee WWTP NC0024872
/Permit No.
Total Mercury 1631E PQL = 0.5 ng/L
Date Modifier Data Entry Value
No Limit Required
No MMP Required
7Q10s = 106.000 cfs
WQBEL = 559.10 ng/L
Permitted Flow = 1.500 MGD 't'grk, 47 ng/L
11/16/10
10/21/11
7/29/13
10/28/13
2/5/14
4/22/14
7/23/14
11.2 . 11.2
3.34. 3.34
12.7 12.7
4.65 4.65
2.69 2.69
11 11
7.22 7.22
11.2 ng/L - Annual Average for 2010
3.3 ng/L - Annual Average for 2011
8.7 ng/L - Annual Average for 2013
7.0 ng/L - Annual Average for 2014

3/23/2015 IWC Based Calculations n Data/comment entry
Cooleemee WWTP NC0024872 Assume upstream TRC level = 0 Results
Assume upstream Fecal level = 0
Prepared By: RDB Check Box if WTP Facility ❑ Check Box if SW ❑
Enter Design Flow (MGD):
Enter s7Q10(cfs):
Enter w7Q10 (cfs):
1.500
106.000
180.000
Enter Upstream NH3-N Level (mg/L):
0.220
Total Residual Chlorine Toxicity Requirment Ammonia NitrogenToxicity Requirment
Total Residual Chlorine (TRC) Ammonia Nitrogen (NH3-N)
Summer
s7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
106.000
1.5
2.325
STREAM WQS (pg/L) 17
UPS BACKGROUND LEVEL (I
IWC (%)
s7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
106.000
1.5
2.325
Limit MAX
35.0 mg/L
STREAM WQS (mg/L) 1.0
0 UPSTREAM LEVEL (mg/L)
2.15 IWC (%) Summer
Allowable Conc. (mg/L)*
Allowable Conc. (pg/L)
28
Secondary Treatment Requirement
(#/100 ml - MONTHLY/DAILY)
Fecal Coliform Limits 200/400
(If DF >331; Monitor)
(If DF <331; Limit)
Dilution Factor (DF)
46.59
Check other limit docs such as basin plan or model
Ammonia Nitrogen (NH3-N)
Winter
w7Q10 (cfs)
DESIGN FLOW (MGD)
DESIGN FLOW (cfs)
0.220
2.15
NO LIMIT
NO LIMIT
180.000
1.5
2.325
NON-POTW
NO LIMIT
NO LIMIT
(MONTHLY/DAILY)
Limit MAX
35.0 mg/L
STREAM WQS (mg/L) 1.8
UPSTREAM LEVEL (mg/L)
IWC (%) Winter
Allowable Conc. (mg/L)*
* MONTHLY AVG LIMIT
0.220
1.28
NO LIMIT
NO LIMIT
NON-POTW
NO LIMIT
NO LIMIT
(MONTHLY/DAILY)
3/23/2015

SLUDGE
TO LAND
APPLICA
(f Kr/ 110-)
5to iztJ
Ar'(2oiL
%At
ifrk
kiv -9
al 6.1V
w
l-
z
w
J
L
co
CL2 TANK
4,55.520 GAL
24"
1>
6" SCUM
LL_
ti
QDECHLOR TANK
kA
13,940 GAL
6" SLUDGE
WASTING
8" SLUDGE
24"
Fft:
n
4" DRAIN
6" SCUM
4" DRAIN
8" SLUDGE
12" SLUDGE
RECIRCULATION
Z
L
m
Z
0
1-
J
w
3,000,000 GAL
AERATION
BASIN 'A'
VI' N. _
V
T
743,735 GAL
JG�.11)ON4L w it'
5
AERATION
BASIN 'B'
731,385 GAL
12" 12"
I
to
0
w
s J2' ,q f2tivi'L-
1 in, ,cfyc..
p1:2:fCIlI
f F"114.71:1 PUMP
slirit6HSTA.
TO
SOUTH
YADKIN
RIVER
LEGEND
INFLUENT/MIX LIQUOR
SLUDGE
EFFLUENT
WASTING/SCUM
JJFwr3w'1
FROM NORTH
INTERCEPTOR
Co
MECH
FINE •
'SCREEN
�❑
Flo 607 C is L
GREY ENGINEERING, INC.
Civil Design and Surveying
P.O. Box 9 Mocksville, N.C. 27028
greyengineering.com [phone]
DAVIE COUNTY
COOLEEMEE WWTP PROCESS SCHEMATIC
SHEET
2
DRAWN BY: G. BULLARD
DESIGN BY: G. BULLARD
PROJ. NO.: 202.080.GE
DATE: 12/04/08
OF

cc: Central Files
WSRO
NPDES STAFF REPORT AND RECOMMENDATION
To:
Attention: Ron Berry
NPDES Complex Permitting Unit
Permit No. NC0024872
County: -Re -wan- DcuA ..LRoa
PART I - GENERAL INFORMATION
1. Permittee Address: Mr. Johnny Lambert
Public Utilities Director
County of Davie
298 East Depot Street, Suite 200
Mocksville, NC 27028
Facility Address: Davie County Cooleemee POTW
198 NC Hwy 801
Woodleaf, NC 27054
EnglimmD
FEB142014
L...__ KTER-�
PPOIINT SOURCE BBRRANC.,
2. Date of Investigation: February 6, 2014
3. Report Prepared by: Mike Mickey, Environmental Program Consultant
4. Persons Contacted and Telephone Number: Tim Smith, ORC, phone: [phone] (cell)
5. Directions to Site: Take Hwy 801 South to Cooleemee. Cross the bridge over the South
Yadkin River into Rowan County, then proceed 0.1 miles and take the first driveway to the
right. Proceed straight to the WWTP.
6. Discharge Point: Latitude: 35° 48' 21.3" Longitude: 80° 33' 33.9"
(note: these are accurate coordinates taken at discharge point)
U.S.G.S. Quad Name: Cooleemee, NC
7. Receiving stream or affected surface waters: South Yadkin River
a.
b.
c.
Classification: C
River Basin and Subbasin No.: 03-07-06
Describe receiving stream features and pertinent downstream uses: The facility
discharges into the South Yadkin River. The Cooleemee WTP intake is
approximately 600 ft upstream of the WWTP discharge. The South Yadkin
River's confluence with the Yadkin River is approximately 11.0 river miles
downstream of the outfall.

Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Current permitted/design capacity of the POTW? The permitted flow is 1.5
MGD. A review of the DMRs for calendar year 2013 shows a daily average flow
of 0.55 MGD.
b. Date(s) of construction activities allowed by previous Authorizations to Construct
issued in the previous two years. None in last 5 years.
c. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The 1.5 MGD permitted facility consists of the following:
* Influent lift station with mechanical screening
* 3.0 MG EQ/surge basin (not aerated -used for III events, WTP backwash & digester supernatant)
* two aeration basins, each with a single surface aerator and mixer
* two 61' secondary clarifiers (only one in service due to low influent flows)
* aerobic digester with surface mixer
* solids storage basin (not aerated)
* gas disinfection
* contact chamber
* gas dechlorination
* effluent flow meter
(note: the Davie County Cooleemee WWTP was initially built by Burlington
Industries to handle textile industrial waste. When Burlington went defunct, the
WWTP was retrofitted and downsized to handle municipal wastewater)
d. Please provide a description of proposed wastewater treatment facilities. N/A
e. Possible toxic impacts to surface waters: None known. The facility has been
compliant with final NPDES effluent limits for the last three years (2011-2013).
They have passed all chronic toxicity tests for the last six years (2008-2013).
f. Pretreatment Program (POTWs only): Davie County has an active pretreatment
program for the Cooleemee WWTP. Ingersoll Rand is the only significant industrial
user (SIU).
2. Residuals handling and utilization/disposal scheme: Digested solids from the single aerobic
digester are periodically trucked 100 yards by EMA Resources to non -aerated basin "C" for
storage (see schematic attached) until the residuals can be land applied on approved fields
covered by non -discharge permit No. WQ0010583.
Page 2

PART III - EVALUATION AND RECOMMENDATIONS
WSRO recommends renewal of the Davie County/Cooleemee NPDES permit.
Just FYI -
• In 2009 all of the flow from the Town of Mocksville's Bear Creek WWTP (NC0050903)
was routed to the Davie County Cooleemee WWTP for treatment. The 0.25 MGD Bear
Creek WWTP was decommissioned and the permit was voided on 2/13/09.
• Please note that the Davie County Cooleemee WWTP does not have grit removal unit.
The reference to "grit removal" on the Permit Supplement page should be removed.
• Although the Davie County Cooleemee WWTP is located on the Rowan County side of
the South Yadkin River (territory of the Mooresville Regional Office), WSRO has always
handled this facility, presumably since the wastewater is generated in Davie County.
• The cover letter that accompanied the renewal request indicated that the facility is in the
process of running the full range fathead minnow toxicity tests. The first test was
conducted in January 2014 and three more are planned (Feb, March & April).
• A copy of the February 6, 2014 compliance inspection letter is attached.
Report Prep±De
Assistant Regional Supervisor & Date
Page 3

Davie Co. Cooleemee WWTP
NC0024872
South Yadkin River,
Class "C" Waters,
Rowan/Davie Co. Line
2013 Google
Cooleemee
Closed Burlington
Industries Complex

EXECUTIVE SUMMARY
This report presents the results of the June 2013 groundwater monitoring activities
conducted at the Ingersoll Rand (IR) facility located at 501 Sanford Avenue in
Mocksville, North Carolina. Groundwater samples were collected from two
groundwater extraction wells as specified in Ingersoll Rand's RCRA Part B Permit (EPA
ID No. NCD0414772) issued September 16, 2011. Water levels were gauged in 44 site
wells three days prior to the sampling event, while the three groundwater extraction
wells were pumping. Following the gauging, the pumping wells were turned off.
Three days later, the site wells were gauged again during the sampling event. In this
manner, depth to groundwater was obtained under both pumping and non -pumping
conditions.
In accordance with the RCRA Part B Permit, groundwater extraction wells RA-2A and
RA-3 were the only wells sampled during the 2013 annual event. Furthermore,
tetrachloroethene (PCE) and trichloroethene (TCE) were the only target compounds for
laboratory analyses (per the Permit) that were performed. PCE was not detected in
either sample. TCE was detected at 212 p.g/L in RA-2A and at 351 µg/L in RA-3, which
is in the range of historical detections in these wells.
MW-11d was added to the sampling matrix as part of the 2011 Part B permit. In 2012,
MW-11d was sampled for the first time since 1993. In 1993, TCE was detected at 37
µg/L. In June 2012, the TCE concentration in MW-11d was reported at 3,920 µg/L. In
order to confirm the presence and concentration of TCE in MW-11d, this well was
resampled during: August 2012 (3,460 µg/L) and April 2013 (3,150 µg/L), verifying the
order of magnitude of the June 2012 concentration.
In January 2013, ERM sampled several bedrock monitor wells for the presence of TCE.
This event included MW-8d, MW-12d, MW-20d, EW-2, and EW-3. TCE was not
detected above laboratory reporting limits in these samples. Monitor well MW-10d was
also sampled in April 2013, with a TCE concentration of 8.4 µg/L. Based on these
sampling results, it does not appear that elevated TCE in MW-11d is coming from the
former lagoon area.
The groundwater recovery system has continued to operate since the June 2012
sampling event with IR personnel monitoring operation of the system and recording
total flow volumes from each extraction well on a monthly basis. The volume of
groundwater recovered during the 12-month period from June 15, 2012 to June 14, 2013
was 7,347,590 gallons.
ERM NC, Inc.
171 IR Mocksville\2013 Annual Report

1.0 INTRODUCTION
This report presents the results of the June 2013 groundwater monitoring
events as well as an evaluation of an on -site groundwater recovery system
from June 2012 to June 2013 at the IR facility located at 501 Sanford
Avenue in Mocksville, North Carolina (see Figure 1). The purpose of the
groundwater monitoring program is to monitor groundwater quality
within and downgradient of the observed volatile organic compound
(VOC) plume in accordance with Ingersoll Rand's RCRA Part B Permit
(EPA ID No. NCD0414772) issued September 16, 2011.
1.1 SCOPE OF WORK
In accordance with the RCRA Part B Permit and the EPA -approved 2011
Groundwater Sampling and Analysis Plan (GWSAP), groundwater
monitoring is performed at the site on an annual basis. Extraction wells
RA-2A and RA-3 were the only site wells scheduled for sampling in 2013
according to the following:
Well ID
Sampling
Frequency
Analysis
Annual
Biennial
Every
YMW-1
TCE
PCE
DEHP
Iron
Lead
Mn
App IX
MW-2d
MW-6b
MW-10d
MW-11d
MW-12d
MW-14s
MW-14d
MW-16
EW-1
EW-2
BG-1
POC-1
POC-lb
RA-1
RA-2A
RA-3
Note: DEHP = Bis-2-ethyihexylp ithalate, Mn = Manganese, TCE = Trichloroethene, PCE = Tetrachloroethene
App IX = EPA List
ERM NC, Inc.
1
IR Mocksville\2013 Annual Report

LEGEND
4) MONITOR WELL LOCATION
DIRECTION OF SURFACE ROW
CENTERIJNE OF CREEK
PROPERTY BOUNDARY
MW-14d
SMW-14s
0
100
Mw-19d
�MW-1si
MW-Bs MW.8d
15CMW-B1
200
SCALE
•MW-11d
ERM NC, Inc.
FIGURE 2
SITE MAP WITH MONITOR WELL LOCATIONS
Ingersoll-Rand Company
MOCICSV K North Carolina
DF9tlt IP
DBA1Nt CAK
DATE 01310011
5CALE
ERM
WA.AV_ INOWGIA1001120110201O.12

GREY
ENGINEERING, INC.
ENVIRONMENTAL AND CIVIL DESIGN
Mr. Charles Weaver, Jr.
c/o Mrs. Dina Sprinkle
NCDENR/DWQ/ Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Davie County Cooleemee WWTP Facility
NPDES Permit Renewal
Permit NC0024872
Dear Mr. Weaver:
Please renew the above referenced NPDES permit.
A process flow diagram and location map (USGS) for the facility is attached hereto.
One signed original and two copies of EPA NPDES Form 2A (with supplemental
attachments) is included herewith.
Changes since the last renewal include addition of mixers to the Aeration Basins.
Since the Cooleemee WWTP is normally sampled quarterly for chronic toxicity
(pass/fail), it has not performed the Full Range Fathead Minnow Toxicity Test required
by the EPA for permit renewal. However, Ms. Cindy Moore, Supervisor of the Aquatic
Toxicity Unity has indicated that the test may be performed monthly for the next four
months with results submitted to the ATU and the NPDES Unit on AT forms as results
are available.
Solids from the treatment facility are drawn from the aerobic digester and land applied
under contract with EMA Resources, Inc. in accordance with permit #WQ0010583.
Johnny Lambert's signature below signifies that I, John Grey, PE, am authorized to draft
and submit this application on the County's behalf and answer any questions regarding
its contents.
Please call with questions.
Sincerely,
Grey Engineering, Inc.
ohn C. Gry, Jr., PE U2i9 ' 72'1-
President
Attachments 3 3
County of / fr,t, :7:
I :1;1'11; (#0/ tr,it.,*
eV `-r, 5r \ may{
C6'
rg
J • hnny Lambert
Public Utilities Director
P.O. Box 9 • Mocksville, NC 27028 • Phone: [phone] • Fax: [phone] • www.greyengineering.com

2000 4000 6000
4
CONTOURS AT 10'
USGS MAP = COOLEEMEE, N.C.
35080-G5-TF-024
GREY ENGINEERING, INC.
Civil Design and Surveying
P.O. Box 9 Mocksville, N.C. 27028
greyengineering.com [phone]
DAVIE COUNTY
DRAWN BY: G. BULLARD
DESIGN BY: G. BULLARD
PROJ. NO.: 202.086.GE
DATE: 12/04/08
COOLEEMEE WWTP VICINITY MAP
ONE MILE RADIUS
SHEET
1
OF 2

I Davie County Cooleemee WWTP
NPDES Permit Renewal
NC0024872
Process Narrative
The Cooleemee WWTP is an extended aeration treatment process with influent
fine screening, floating aerators and mixers, secondary clarification, chlorination,
dechlorination, aerobic sludge digestion and solids transfer to land application.
The facility includes a 3MG equalization basin that may be remotely operated as
needed to control storm surges, water treatment plant batch episodes or other
surge occurrences.