NC0028711_PERMIT ISSUANCE_20120411

WDES DOCUMENT SCANNING COVER SKEET
NPDES Permit:
NC0028711
Berryhill Elementary WWTP
Document Type:
'permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
Aril 11, 2012
This doCumeat is printed on reuse paper. - ignore any
Content on the reverse side

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wa4ild, P.E. Dee Freeman
Governor Director Secretary
1011
April 11, 2012
Mr. A.4 �- atdo %r 11921 C C/0 N E'r
Director ofAfcki4oe4ire of l%1 6-1 -
Charlotte -Mecklenburg Board of Education
3301 Stafford Drive
Charlotte, NC 28208
Subject: Issuance of Modified NPDES Permit
Permit NCO028711
Berryhill Elementary School WWTP
Mecklenburg County
Class II
Dear Mr. Ansaldo:
Division personnel have reviewed and approved your application for modification of the subject permit
for an expansion to 0.008 MGD. Accordingly, we are forwarding the attached modified 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
October 15, 2007 (or as subsequently amended).
Modified Permit:
1) Revised Supplement to Permit Cover Sheet with proposed 0.008 MGD expansion.
2) Added new 0.008 MGD Flow Expansion Effluent Page.
3) Added UV disinfection option. Compliance with total residual chlorine is conditional and required when
chlorine or a chlorine derivative disinfection is added.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter
150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final
and binding.
Page 1 of 2
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury SL Raleigh, North Carolina 27604 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 No Carolina
Intemet www.nmaterquality.org An Equal Opportunity l Affirmative Action Employer K K `(

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 Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other federal or local
governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Berry at telephone number (919)
807-6396 or at email [e-mail].
Sincerely,
harles Wakild, P.E.
Attachments
Cc: Mooresville Regional Office/Surface Water Protection Section (with copy of revised Fact Sheet)
South Carolina Department of Health and Environmental ControUMike Montebello
Email: montelbmina,dhec.sc.gov (email with revised Fact Sheet)
Mecklenburg County/Erin Hall
Email: [e-mail] (email)
Drewberry & Davis, Inc./Matthew B. West, P.E.
Email: [e-mail] (email)
IF/Ken Pohlig (email)
Central Files
NPDES Files
Page 2 of 2

Permit NC0028711
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Charlotte -Mecklenburg Board of Education
is hereby authorized to discharge wastewater from a facility located at the
Berryhill Elementary School WWTP
10501 Windy Grove Road
Mecklenburg County
to receiving waters designated as the Catawba River (Lake Wylie) 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 modification shall become effective May 1, 2012.
This permit and authorization to discharge shall expire at midnight on June 30, 2015.
Signed this day April 11, 2012.
lit U4�_
bhaks Wakild, P.E., Director
Ir7 Division of Water Quality
By Authority of the Environmental Management Commission

Permit NCO028711
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.
Charlotte -Mecklenburg Board of Education
is hereby authorized to:
1. Continue to operate an existing 0.006 MGD packaged extended aeration wastewater treatment
system with the following components:
o Bar screen
o One (1) 7,400 gallon flow equalization basin with transfer pumps
o One (1) 8,400 gallon aeration basin with blowers
o One (1) 26 ftZ clarifier with sludge transfer pumps
o One (1) 2,900 gallon post aeration basin
o One (1) 4,500 gallon sludge holding tank
o Controls
o Tablet chlorination
o Flow weir
o Tablet dechlorination
The facility is located at Berryhill Elementary School, 10501 Windy Grove Road in Mecklenburg
County.
2. Upon obtaining an Authorization to Construct or Operate for 0.008 MGD, and submitting the
signed Engineer Certificate to begin operation with the following additional components:
o Expanded aeration basin
o Two (2) new sludge pumps
o Two (2) new 3,000 gallon sludge holding tanks
o UV disinfection (option)
o New controls
3. Discharge from said treatment works at the location specified on the attached map into the
Catawba River (Lake Wylie), classified WS-V and B waters in sub -basin 03-08-34 of the Catawba
River Basin.

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USGS Quad: G15NW Charlotte West, NC
Outfall Facility
, s�
Latitude: 350 12' 41.7" N 350 12' 44" N
Longitude: 800 59' 58.5" W 800 59' 29" W
"
Stream Class: WS-V, B
North
Facility Location "
Subbasin: 03-08-34 HUC: 03050103
Berryhill Elementary School WWTPNC0028711
Receiving Stream: Catawba River (Lake Wylie)
Mecklenburg County

Permit NCO02871 I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, or until
receipt of a signed Engineer Certificate for expansion to 0.008 MGD, the Permince is authorized to
discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
';-
LIMITS
MONITORING" REQUIREMENTS
EFFLUENT
CHARACTERISTICS
Monthly
Daily
Measurement
Sample
Sample
Average„
•Maximum,
Fre tiencv f
T e
Location
Flow
0.006 MGD
Weekly
Instantaneous
Influent or
Effluent
Total Residual Chlorine 2
17 µg/L
2/Week
Grab
Effluent
BOD, 5-day (20°C)
17.0 mg/L
25.5 mg/L
Weekly
Grab
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
NH3 as N
(April I —October 31)
2.0 mg/L
10.0 mg/L
Weekly
Grab
Effluent
NH3 as N
(November 1 —March 31)
9.0 mg/L
35.0 mg/L
Weekly
Grab
Effluent
Fecal Coliform
(geometric mean)
200/100 ml
400/100 ml
Weekly
Grab
Effluent
pH
Not less than 6.0 S.U. nor
Weekly
Grab
Effluent
more than 9.0 S.U.
Dissolved Oxygen
Not less than 5.0 mg/L,
Weekly
Grab
Effluent
dailyaverage
Dissolved Oxygen
Weekly
Grab
Upstream &
Downstream
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
Weekly
Grab
Upstream &
Downstream
Footnotes:
1. Upstream = 100 feet above discharge point; Downstream = 200 feet below discharge point.
2. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values fall below 50
ug/L.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER
THAN TRACE AMOUNTS

Permit NCO028711
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and after receipt. of the signed
Engineering Certificate for expansion to 0.008 iviGD and lasting until expiration, tiie Peri-nittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
LIMITS"
.. ..............................
MONITORING REQUIREMENTS
Monthly
Daily
Measurement
„ ,Sample
EFFLUENT
CHARACTERISTICS
Average ,
-Maximum
; Frequency •.
Type 'u
Location
Influent or
Flow
0.008 MGD
Weekly
Instantaneous
Effluent
Total Residual Chlorine 2
17 µg/L
2/Week
Grab
Effluent
BOD, 5-day (20°C)
12.8 mg/L
19.2.mg/L
Weekly
Grab
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
NH3 as N
2.0 mg/L
10.0 mg/L
Weekly
Grab
Effluent
(April I —October 31)
NH3 as N
6.8 mg/L
34.0 mg/L
Weekly
Grab
Effluent
(November 1 —March 31)
Fecal Coliform
200/100 ml
400/100 ml
Weekly
Grab
Effluent
(geometric mean)
pH
Not less than 6.0 S.U. nor
Weekly
Grab
Effluent
more than 9.0 S.U.
Dissolved Oxygen
Not less than 5.0 mg/L,
Weekly
Grab
Effluent
daily average
Dissolved Oxygen
Weekly
Grab
Upstream &
Downstream
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
Weekly
Grab
Upstream &
Downstream
Footnotes:
1. Upstream = 100 feet above discharge point; Downstream = 200 feet below discharge point.
2. The permittee must alert the Division that UV disinfection has been installed and operational. If the
facility uses chlorine or chlorine derivative for disinfection at any time the TRC daily limit applies.
The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance
with the permit. However, the Permittee shall continue to record and submit all values reported by
a North Carolina certified laboratory (including field certified), even if these values fall below 50
ug/L.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER
THAN TRACE AMOUNTS

NPDES Permit Standard Conditions
Page 1 of 18
PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
2/Month
Samples are collected twice per month with at least ten calendar days between sampling events. These samples shall be
representative of the wastewater discharged during the sample period.
3/Week
Samples are collected three times per week on three separate calendar days. These samples shall be representative of
the wastewater discharged during the sample period.
Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC 1251, et.
seq.
Annual Average
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In the case of fecal
coliform, the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system, which is
not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Calendar Week
The period from Sunday through the following Saturday.
Calendar Quarter
One of the following distinct periods: January through March, April through June, July through September, and
October through December.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method (specific number and size of aliquots necessary, the time interval
between grab samples, etc.) on a case -by -case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection, or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number of gallons passing the sampling point. Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system, or
Version 1110912011

NPDES Permit Standard Conditions
Page 2 of 18
(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a
constant time interval. Use of this method requires prior approval by the Director. This method may only be
used in situations where effluent flow rates vary less than 15 percent. The following restrictions also apply:
➢ Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
➢ Influent samples shall not be collected more than once per hour.
➢ Permittees with wastewater treatment systems whose detention time < 24 hours shall collect effluent grab
samples at intervals of no greater than 20 minutes apart during any 24-hour period.
➢ Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent
grab samples at least every six hours; there must be a minimum of four samples during a 24-hour sampling
period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as
the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement, the
"daily discharge" is calculated as the average measurement of the pollutant over the day. (40 CFR 122.2; see also
"Composite Sample," above.)
Daily Maximum
The highest "daily discharge" during the calendar month.
Daily SaMpling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations
prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s), that
requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWQ or "the Division"
The Division of Water Quality, Department of Environment and Natural Resources.
Effluent
Wastewater discharged following all treatment processes from a water pollution control facility or other point source
whether treated or untreated.
EMC
The North Carolina Environmental Management Commission
EPA
The United States Environmental Protection Agency
Facility Closure
Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this
permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N = the number of individual values. For purposes of
calculating the geometric mean, values of "0" (or "< [detection level]") shall be considered = 1.
Grab Sample
Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream
samples).
Version 1110912011

NPDES Permit Standard Conditions
Page 3 of 18
Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA.
Instantaneous flow measurement
The flow measured during the minimum time required for the flow measuring device or method to produce a result in
that instance. To the extent practical, instantaneous flow measurements coincide with the collection of any grab
samples required for the same sampling period so that together the samples and flow are representative of the discharge
during that sampling period.
Monthly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal
coliform or other bacterial parameters or indicators, the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Quality.
Quarterly Average (concentration limit)
The arithmetic mean of all samples taken over a calendar quarter.
Severe prope . damage
Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or
substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1) of the CWA.
Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by
operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive
maintenance, or careless or improper operation.
Weekly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case of fecal
coliform or other bacterial parameters or indicators, the geometric mean of such discharges.
Section B. General Conditions
1. Duty to Comply_
The Permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of
the CWA and is grounds for enforcement action; for permit termination, revocation and reissuance, or
modification; or denial of a permit renewal application [40 CFR 122.41].
a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a) of the
CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section
405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or
standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the
requirement.
b. The CWA provides that any person who violates section[s] 301, 302, 306, 307, 308, 318 or 405 of the Act, or
any permit condition or limitation implementing any such sections in a permit issued under section 402, or any
requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act, is
subject to a civil penalty not to exceed $37,500 per day for each violation. [33 USC 1319(d) and 40 CFR
122.41(a)(2)]
c. The CWA provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or 405 of
the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402
of the Act, or any requirement imposed in a pretreatment program approved under section 402(a)(3) or
402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or
Version 1110912011

NPDES Permit Standard Conditions
Page 4 of 18
imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent
violation, a person shall be subject to criminal penalties of not more than $50,000 per day of violation, or by
imprisonment of not more than 2 years, or both. [33 USC 1319(c)(1) and 40 CFR 122.41(a)(2)]
d. Any person who knowingly violates such sections, or such conditions or limitations is subject to criminal
penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In the
case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal
penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both.
[33 USC 1319(c)(2) and 40 CFR 122.41(a)(2)]
e. Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, and
who knows at that time that he thereby places another person in imminent danger of death or serious bodily
injury, shall, upon conviction, be subject to a fine of not more than $250,000 or imprisonment of not more than
15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a
person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than 30 years, or
both. An organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction of violating
the imminent danger provision, be subject to a fine of not more than $1,000,000 and can be fined up to
$2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)]
f. Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [North
Carolina General Statutes § 143-215.6A]
g. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302,
306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such sections
in a permit issued under section 402 of this Act. Administrative penalties for Class I violations are not to
exceed $16,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed
$37,500. Penalties for Class II violations are not to exceed $16,000 per day for each day during which the
violation continues, with the maximum amount of any Class II penalty not to exceed $177,500. [33 USC
1319(g)(2) and 40 CFR 122.41(a)(3)]
2. Duty to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit with a reasonable likelihood of adversely affecting human health or the environment [40
CFR 122.41(d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on 'Bypassing" (Part II.C.4), "Upsets" (Part II.C.S) and "Power Failures"
(Part II.C.7), nothing in this permit shall be construed to relieve the Permittee from any responsibilities, liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC
1319. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities, liabilities, or penalties to which the Permittee is or may be subject to under NCGS 143-
215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive
privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any
infringement of Federal, State or local laws or regulations [40 CFR 122.41(g)].
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
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7. Severability
The provisions of this permit are severable. If any provision of this permit, or the application of any provision of
this permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the
remainder of this permit, shall not be affected thereby [NCGS 15013-23].
8. Duty to Provide Information
The Permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or
terminating this permit or to determine compliance with this permit. The Permittee shall also furnish to the Permit
Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41(h)].
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the
Permittee must apply for and obtain a new permit [40 CFR 122.41(b)].
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to
discharge beyond the expiration date, the Permittee shall submit such information, forms, and fees as are required
by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a
later date has been granted by the Director. (The Director shall not grant permission for applications to be
submitted later than the expiration date of the existing permit.) [40 CFR 122.21(d)] Any Permittee that has not
requested renewal at least 180 days prior to expiration, or any Permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration, will subject the Permittee to
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified [40
CFR 122.41(k)].
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible
corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge
of a principal business function, or any other person who performs similar policy or decision making
functions for the corporation, or (b) the manager of one or more manufacturing, production, or operating
facilities, provided, the manager is authorized to make management decisions which govern the operation
of the regulated facility including having the explicit or implicit duty of making major capital investment
recommendations, and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental laws and regulations; the manager can ensure that the
necessary systems are established or actions taken to gather complete and accurate information for permit
application requirements; and where authority to sign documents has been assigned or delegated to the
manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or
ranking elected official [40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a. above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall operation
of the regulated facility or activity, such as the position of plant manager, operator of a well or well field,
superintendent, a position of equivalent responsibility, or an individual or position having overall
responsibility for environmental matters for the company. (A duly authorized representative may thus be
either a named individual or any individual occupying a named position.); and
(3) The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22]
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c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate because
a different individual or position has responsibility for the overall operation of the facility, a new authorization
satisfying the requirements of paragraph (b) of this section must be submitted to the Director prior to or
together with any reports, information, or applications to be signed by an authorized representative [40 CFR
122.22]
d. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the following
certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
7 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 orpersons 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. "
12. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the
Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes
or anticipated noncompliance does not stay any permit condition [40 CFR 122.41(f)].
13. Permit Modification, Revocation and Reissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit,
revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina
Administrative Code, Subchapter 02H .0100; and North Carolina General Statute 143.215.1 et. al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H .0105(b)(2)
may cause this Division to initiate action to revoke the permit.
Section C. Operation and Maintenance of Pollution Controls
1. Certified Operator
Owners of classified water pollution control systems must designate operators, certified by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), of the appropriate type and grade for the
system, and, for each classification must [T15A NCAC 08G .0201]:
a. designate one Operator In Responsible Charge (ORC) who possesses a valid certificate of the type and grade at
least equivalent to the type and grade of the system;
b. designate one or more Back-up Operator(s) in Responsible Charge (Back-up ORCs) who possesses a valid
certificate of the type of the system and no more than one grade less than the grade of the system, with the
exception of no backup operator in responsible charge is required for systems whose minimum visitation
requirements are twice per year; and
c. submit a signed completed "Water Pollution Control System Operator Designation Form" to the Commission
(or to the local health department for owners of subsurface systems) countersigned by the designated certified
operators, designating the Operator in Responsible Charge (ORC) and the Back-up Operator in Responsible
Charge (Back-up ORC):
(1) 60 calendar days prior to wastewater or residuals being introduced into a new system; or
(2) within 120 calendar days following:
➢ receiving notification of a change in the classification of the system requiring the designation of a new
Operator in Responsible Charge (ORC) and Back-up Operator in Responsible Charge (Back-up ORC)
of the proper type and grade; or
➢ a vacancy in the position of Operator in Responsible Charge (ORC) or Back-up Operator in
Responsible Charge (Back-up ORC).
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(3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating
at least one of the responsibilities.
The ORC of each Class I facility (or the Back-up ORC, when acting as surrogate for the ORC) must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment
facility must be visited at least weekly
➢ Comply with all other conditions of 15A NCAC 08G .0204.
The ORC of each Class II, III and IV facility (or the Back-up ORC, when acting as surrogate for the ORC) must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment
facility must be visited at least five days per week, excluding holidays
➢ Properly manage and document daily operation and maintenance of the facility
➢ Comply with all other conditions of 15A NCAC 08G .0204.
2. Proper Operation and Maintenance
The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances) which are installed or used by the Permittee to achieve compliance with the conditions
of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality
assurance procedures. This provision requires the Permittee to install and operate backup or auxiliary facilities only
when necessary to achieve compliance with the conditions of the permit [40 CFR 122.41(e)].
NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance
of the facility, and all documentation required thereof, whether acting as a contract operator [subcontractor] or a
member of the Permittee's staff.
3. Need to Halt or Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit [40 CFR 122.41(c)].
4. Bypassing of Treatment Facilities
a. Bypass not exceeding limitations [40 CFR 122.41(m)(2)]
The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the
provisions of Paragraphs b. and c. of this section.
b. Notice [40 CFR 122.41(m)(3)]
(1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior notice,
if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality
and effect of the bypass.
(2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part
II.E.6. (24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The Permittee submitted notices as required under Paragraph b. of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system -wide collection system
permit associated with the treatment facility.
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(3) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse effects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1) of this section.
5. Upsets
a. Effect of an upset [40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the requirements of paragraph b. of
this condition are met. No determination made during administrative review of claims that noncompliance was
caused by upset, and before an action for noncompliance, is final administrative action subject to judicial
review.
b. Conditions necessary for a demonstration of upset: Any Permittee who wishes to establish the affirmative
defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant
evidence that:
(1) An upset occurred and that the Permittee can identify the cause(s) of the upset;
(2) The Permittee facility was at the time being properly operated; and
(3) The Permittee submitted notice of the upset as required in Part ILE.6.(b) of this permit.
(4) The Permittee complied with any remedial measures required under Part II.B.2. of this permit.
c. Burden of proof [40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has
the burden of proof in any enforcement proceeding.
6. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States except as permitted
by the Commission. The Permittee shall comply with all applicable state and Federal regulations governing the
disposal of sewage sludge, including 40 CFR 503, Standards for the Use and Disposal of Sewage Sludge; 40 CFR
Part 258, Criteria For Municipal Solid Waste Landfills; and 15A NCAC Subchapter 2T, Waste Not Discharged To
Surface Waters. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 02H .0124) to
prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means
of alternate power sources, standby generators or retention of inadequately treated effluent.
Section D. Monitoring and Records
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be representative of the permitted discharge.
Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents. All samples shall be taken at the monitoring points specified in this
permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of
water, or substance. Monitoring points shall not be changed without notification to and the approval of the Permit
Issuing Authority [40 CFR 122.410)].
2. Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a
monthly Discharge Monitoring Report (DMR) Form (MR 1, 1. 1, 2, 3) or alternative forms approved by the
Director, postmarked no later than the last calendar day of the month following the completed reporting period.
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. Duplicate signed copies of these,
and all other reports required herein, shall be submitted to the following address:
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NC DENR / Division of Water Quality / Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Once -through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I of
this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
4. Test Procedures
Laboratories used for sample analysis must be certified by the Division. Permittees should contact the Division's
Laboratory Certification Section (919 733-3908 or http://portal.ncdenr.org/web/wq/lab/cert) for information
regarding laboratory certifications.
Facilities whose personnel are conducting testing of field -certified parameters only must hold the appropriate field
parameter laboratory certifications.
Test procedures for the analysis of pollutants shall conform to the EMC regulations (published pursuant to NCGS
143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section
304(g), 33 USC 1314, of the CWA (as amended), and 40 CFR 136; or in the case of sludge use or disposal,
approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been
specified in this permit [40 CFR 122.41].
To meet the intent of the monitoring required by this permit, all test procedures must produce minimum detection
and reporting levels that are below the permit discharge requirements and all data generated must be reported down
to the minimum detection or lower reporting level of the procedure. If no approved methods are determined
capable of achieving minimum detection and reporting levels below permit discharge requirements, then the most
sensitive (method with the lowest possible detection and reporting level) approved method must be used.
5. Penalties for Tampering
The CWA provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring
device or method required to be maintained under this permit shall, upon conviction, be punished by a fine of not
more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a
conviction of a person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years,
or both [40 CFR 122.41].
6. Records Retention
Except for records of monitoring information required by this permit related to the Permittee's sewage sludge use
and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR
503), the Permittee shall retain records of all monitoring information, including:
➢ all calibration and maintenance records
➢ all original strip chart recordings for continuous monitoring instrumentation
➢ copies of all reports required by this permit
➢ copies of all data used to complete the application for this permit
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time [40 CFR
122.41].
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7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the Permittee shall record the
following information [40 CFR 122.41]:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
8. Inspection and Entry
The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as
a representative of the Director), upon the presentation of credentials and other documents as may be required by
law, to;
a. Enter, at reasonable times, upon the Permittee's premises where a regulated facility or activity is located or
conducted, or where records must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit;
c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices,
or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise
authorized by the CWA, any substances or parameters at any location [40 CFR 122.41(i)].
Section E Reporting Requirements
1. Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge of
any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute
a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility [40 CFR 122.41(1)]. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29(b); or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to
notification requirements under 40 CFR 122.42(a)(1); or
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices, and
such alteration, addition or change may justify the application of permit conditions that are different from or
absent in the existing permit, including notification of additional use or disposal sites not reported during the
permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit [40 CFR 122.41(1)(2)].
4. Transfers
This permit is not transferable to any person without prior written notice to and approval from the Director in
accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1, in
particular NCGS 143-215.1(b)(4)b.2., and may require modification or revocation and reissuance of the permit, or
a minor modification, to identify the new permittee and incorporate such other requirements as may be necessary
under the CWA [40 CFR 122.41(1)(3), 122.61] or state statute.
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5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit [40 CFR 122.41(1)(4)].
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II.D.2) or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures
approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate
instrument governing the discharge, the results of such monitoring shall be included in the calculation and
reporting of the data submitted on the DMR.
6. Twenty-four Hour Reporting
a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment. Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances. The written submission
shall contain a description of the noncompliance, and its cause; the period of noncompliance, including exact
dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to
continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance [40
CFR 122.41(1)(6)].
b. The Director may waive the written report on a case -by -case basis for reports under this section if the oral
report has been received within 24 hours.
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at [phone], [phone] or [phone].
7. Other Noncompliance
The Permittee shall report all instances of noncompliance not reported under Part II.E.5 and 6. of this permit at the
time monitoring reports are submitted. The reports shall contain the information listed in Part II.E.6. of this permit
[40 CFR 122.41(1)(7)].
8. Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted
incorrect information in a permit application or in any report to the Director, it shall promptly submit such facts or
information [40 CFR 122.41(1)(8)].
9. Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division
as soon as possible, but in no case more than 24 hours or on the next working day following the occurrence or first
knowledge of the occurrence of any of the following:
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge
digester; the known passage of a slug of hazardous substance through the facility; or any other unusual
circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass without treatment of all
or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence. Also see reporting requirements for municipalities in Part IV.C.2.c. of this permit.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33
USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division. As required by the Act, effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143-
215. 1 (b)(2) or in Section 309 of the Federal Act.
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11. Penalties for Falsification of Reports
The CWA provides that any person who knowingly makes any false statement, representation, or certification in
any record or other document submitted or required to be maintained under this permit, including monitoring
reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than
$25,000 per violation, or by imprisonment for not more than two years per violation, or by both [40 CFR 122.41].
12. Annual Performance Reports
Permittees who own or operate facilities that collect or treat municipal or domestic waste shall provide an annual
report to the Permit Issuing Authority and to the users/customers served by the Permittee (NCGS 143-215.1C). The
report shall summarize the performance of the collection or treatment system, as well as the extent to which the
facility was compliant with applicable Federal or State laws, regulations and rules pertaining to water quality. The
report shall be provided no later than sixty days after the end of the calendar or fiscal year, depending upon which
annual period is used for evaluation.
The report shall be sent to:
NC DENR / Division of Water Quality / Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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PART III
OTHER REQUIREMENTS
Section A. Construction
a. The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment
capacity, nor change the treatment process(es) utilized at the treatment plant unless (1) the Division has issued an
Authorization to Construct (AtC) permit or (2) the Permittee is exempted from such AtC permit requirements
under Item b. of this Section.
b. In accordance with NCGS 143-215.1(a5) [SL 2011-394], no permit shall be required to enter into a contract for the
construction, installation, or alteration of any treatment work or disposal system or to construct, install, or alter any
treatment works or disposal system within the State when the system's or work's principle function is to conduct,
treat, equalize, neutralize, stabilize, recycle, or dispose of industrial waste or sewage from an industrial facility and
the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the
industrial waste or sewage into the waters of the State. Notwithstanding the above, the permit issued for the
discharge may be modified if required by federal regulation.
c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been
submitted by the Permittee and approved by the Division.
Section B. Groundwater Monitoring
The Permittee shall, upon written notice from the Director, conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with the current groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42):
a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of
any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following
"notification levels";
(1) One hundred micrograms per liter (100 µg/L);
(2) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile; five hundred micrograms per liter
(500 µg/L) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter (1 mg/L) for
antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge, on a non -routine or infrequent
basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the
following "notification levels";
(1) Five hundred micrograms per liter (500 µg/L);
(2) One milligram per liter (1 mg/L) for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section D. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered
by this permit. The Division may require specific measures during deactivation of the system to prevent adverse
impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the
permitted facility.
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PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
Section A. Definitions
In addition to the definitions in Part II of this permit, the following definitions apply to municipal facilities:
Indirect Discharge or Industrial User
Any non -domestic source that discharges wastewater containing pollutants into a POTW regulated under section
307(b), (c) or (d) of the CWA. [40 CFR 403.3 (i) and 0) and 15A NCAC 02H .0903(b)(11)]
Interference
Inhibition or disruption of the POTW treatment processes; operations; or its sludge process, use, or disposal which
causes or contributes to a violation of any requirement of the Permittee's (or any satellite POTW's if different from the
Permittee) NPDES, collection system, or non -discharge permit or prevents sewage sludge use or disposal in
compliance with specified applicable State and Federal statutes, regulations, or permits. [15A NCAC 02H
.0903(b)(14)]
Pass Through
A discharge which exits the POTW into waters of the State in quantities or concentrations which, alone or with
discharges from other sources, causes a violation, including an increase in the magnitude or duration of a violation, of
the Permittee's (or any satellite POTW's, if different from the Permittee) NPDES, collection system, or non -discharge
permit. [15A NCAC 02H .0903(b)(23)]
Publicly Owned Treatment Works (POTW)
A treatment works as defined by Section 212 of the CWA, which is owned by a State or local government organization.
This definition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal
sewage or industrial wastes of a liquid nature. It also includes the collection system, as defined in 15A NCAC 2T
.0402, only if it conveys wastewater to a POTW treatment plant. The term also means the local government
organization, or municipality, as defined in section 502(4) of the CWA, which has jurisdiction over indirect discharges
to and the discharges from such a treatment works. In this context, the organization may be the owner of the POTW
treatment plant or the owner of the collection system into which an indirect discharger discharges. This second type of
POTW may be referred to as a "satellite POTW organization." [15A NCAC 02H .0903(b)(26)]
"Significant Industrial User" or "SIU"
An Industrial User that discharges wastewater into a publicly owned treatment works and that [15A NCAC 02H
.0903(b)(33)]:
1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW (excluding sanitary,
noncontact cooling and boiler blowdown wastewaters); or
2. Contributes process wastewater which makes up five percent or more of the NPDES or non -discharge permitted
flow limit or organic capacity of the POTW treatment plant. In this context, organic capacity refers to BOD, TSS
and ammonia; or
3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471; or
4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely
affecting the POTW's operation or for violating any pretreatment standard or requirement, or the POTW's effluent
limitations and conditions in its NPDES or non -discharge permit, or to limit the POTW's sludge disposal options;
5. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting
the criteria in paragraphs 1 or 2 of this definition above has no reasonable potential for adversely affecting the
POTW's operation or for violating any pretreatment standard or requirement, the POTW's effluent limitations and
conditions in its NPDES or non -discharge permit, or to limit the POTW's sludge disposal options, and thus is not a
Significant Industrial User (SIU); or
6. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting
the criteria in paragraph 3 of this definition above meets the requirements of 40 CFR Part 403.3(v)(2) and thus is a
non -significant categorical Industrial User.
Section B. Publicly Owned Treatment Works (POTWs)
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NPDES Permit Standard Conditions
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All POTWs must provide adequate notice to the Director of the following [40 CFR 122.42(b)]:
1. Any new introduction of pollutants into the POTW from an indirect discharger, regardless of the means of
transport, which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants;
and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as
influent to that POTW at the time of issuance of the permit.
3. For purposes of this paragraph, adequate notice shall include information on (1) the quality and quantity of effluent
introduced into the POTW, and (2) any anticipated impact that may result from the change of the quantity or
quality of effluent to be discharged from the POTW.
Section C. Municipal Control of Pollutants from Industrial Users.
1. Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from Industrial Users
discharging to the POTW may be present in the Permittee's discharge. At such time as sufficient information
becomes available to establish limitations for such pollutants, this permit may be revised to specify effluent
limitations for any or all of such other pollutants in accordance with best practicable technology or water quality
standards.
2. Prohibited Discharges
a. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibition against the
introduction of pollutants or discharges into the waste treatment system or waste collection system which
cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H .0900 and 40 CFR 403. [40
CFR 403.5(a)(1)]
b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the
introduction of the following wastes in the waste treatment or waste collection system [40 CFR 403.5(b)]:
(1) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade
using the test methods specified in 40 CFR 261.21;
(2) Pollutants which cause corrosive structural damage to the POTW, but in no case discharges with pH lower
than 5.0, unless the works is specifically designed to accommodate such discharges;
(3) Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in
Interference;
(4) Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a Discharge at a flow rate
and/or pollutant concentration which will cause Interference with the POTW;
(5) Heat in amounts which will inhibit biological activity in the POTW resulting in Interference, but in no
case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C (104°F)
unless the Division, upon request of the POTW, approves alternate temperature limits;
(6) Petroleum oil, non -biodegradable cutting oil, or products of mineral oil origin in amounts that will cause
Interference or Pass Through;
(7) Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that
may cause acute worker health and safety problems; or
(8) Any trucked or hauled pollutants, except at discharge points designated by the POTW.
c. The Permittee shall investigate the source of all discharges into the POTW, including slug loads and other
unusual discharges, which have the potential to adversely impact the Permittee's Pretreatment Program and/or
the operation of the POTW.
The Permittee shall report such discharges into the POTW to the Director or the appropriate Regional Office.
Any information shall be provided orally within 24 hours from the time the Permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the Permittee becomes
aware of the circumstances. The written submission shall contain a description of the discharge; the
investigation into possible sources; the period of the discharge, including exact dates and times; if the
discharge has not ceased, the anticipated time it is expected to continue; and steps taken or planned to reduce,
eliminate, and prevent reoccurrence of the noncompliance,
Version 1110912011

NPDES Permit Standard Conditions
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3. With regard to the effluent requirements listed in Part I of this permit, it may be necessary for the Permittee to
supplement the requirements of the Federal Pretreatment Standards (40 CFR, Part 403) to ensure compliance by
the Permittee with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding
some or all of the industries discharging to the municipal system.
4. The Permittee shall require any Industrial User (IU) discharging to the POTW to meet Federal Pretreatment
Standards developed under Section 307(b) of the Act as amended (which includes categorical standards and
specific local limits, best management practices and narrative requirements). Prior to accepting wastewater from
any Significant Industrial User (SIU), the Permittee shall either develop and submit to the Division a new
Pretreatment Program or, as necessary, a modification of an existing Pretreatment Program, for approval as
required under section D below as well as 15A NCAC 02H .0907(a) and (b). [40 CFR 122.440)(2)]
5. This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify an approved POTW
Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program
as required under Section 402 (b)(8) of the CWA and implementing regulations or by the requirements of the
approved State pretreatment program, as appropriate.
Section D. Pretreatment Programs
Under authority of sections 307 (b) and (c) and 402(b)(8) of the CWA and implementing regulations 40 CFR 403,
North Carolina General Statute 143-215.3(14) and implementing regulations 15A NCAC 02H .0900, and in accordance
with the approved pretreatment program, all provisions and regulations contained and referenced in the pretreatment
program submittal are an enforceable part of this permit. [40 CFR 122.440)(2)]
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the CWA, 40
CFR 403, 15A NCAC 02H .0900, and the legal authorities, policies, procedures, and financial provisions contained in
its pretreatment program submission and Division approved modifications thereof. Such operation shall include but is
not limited to the implementation of the following conditions and requirements. Terms not defined in Part II or Part IV
of this permit are as defined in 15A NCAC 02H .0903 and 40 CFR 403.3.
1. Sewer Use Ordinance (SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A
NCAC 02H .0903(b)(32), .0905 and .0906(b)(1); 40 CFR 403.8(f)(1) and 403.9(b)(1) and (2)]
2. Industrial Waste Survey (IWS)
The Permittee shall implement an IWS consisting of the survey of users of the POTW collection system or
treatment plant, as required by 40 CFR 403.8(f)(2)(i-iii) and 15A NCAC 02H .0905 [also 40 CFR 122.440)(1)],
including identification of all Industrial Users that may have an impact on the POTW and the character and amount
of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users
meeting the definition of SIU. Where the Permittee accepts wastewater from one or more satellite POTWs, the
IWS for the Permittee shall address all satellite POTW services areas, unless the pretreatment program in those
satellite service areas is administered by a separate Permittee with an approved Pretreatment Program. The
Permittee shall submit a summary of its IWS activities to the Division at least once every five years, and as
required by the Division. The IWS submission shall include a summary of any investigations conducted under
paragraph C.2.c. of this Part. [15A NCAC 02H .0903(b)(13), .0905 and .0906(b)(2); 40 CFR 403.8(f)(2) and 403.9]
3. Monitoring Plan
The Permittee shall implement a Division -approved Monitoring Plan for the collection of facility specific data to
be used in a wastewater treatment plant Headworks Analysis (HWA) for the development of specific pretreatment
local limits. Effluent data from the Plan shall be reported on the DMRs (as required by Parts ILD and II.E.5.). [15A
NCAC 02H .0903(b)(16), .0906(b)(3) and .0905]
4. Headworks Analysis (HWA) and Local Limits
The Permittee shall obtain Division approval of a HWA at least once every five years, and as required by the
Division. Within 180 days of the effective date of this permit (or any subsequent permit modification) the
Permittee shall submit to the Division a written technical evaluation of the need to revise local limits (i.e., an
updated HWA or documentation of why one is not needed) [40 CFR 122.44]. The Permittee shall develop, in
accordance with 40 CFR 403.5(c) and 15A NCAC 02H .0909, specific Local Limits to implement the prohibitions
listed in 40 CFR 403.5(a) and (b) and 15A NCAC 02H .0909. Pursuant to 40 CFR 403.5, local limits are
Version 1110912011

NPDES Permit Standard Conditions
Page 17 of 18
enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H .0903(b)(10), .0905, and
.0906(b)(4)]
5. Industrial User Pretreatment Permits (IUP) & Allocation Tables
In accordance with NCGS 143-215.1, the Permittee shall issue to all Significant Industrial Users, permits for
operation of pretreatment equipment and discharge to the Permittee's collection system or treatment works. These
permits shall contain limitations, sampling protocols, reporting requirements, appropriate standard and special
conditions, and compliance schedules as necessary for the installation of treatment and control technologies to
assure that their wastewater discharge will meet all applicable pretreatment standards and requirements. The
Permittee shall maintain a current Allocation Table (AT) which summarizes the results of the HWA and the limits
from all 1UPs. Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA. [15A NCAC 02H .0906(b)(6), .0909, .0916, and .0917; 40 CFR 403.5, 403.8(f)(1)(iii);
NCGS 143-215.67(a)]
6. Authorization to Construct (AtQ
The Permittee shall ensure that an Authorization to Construct permit (AtQ is issued to all applicable Industrial
Users for the construction or modification of any pretreatment facility. Prior to the issuance of an AtC, the
proposed pretreatment facility and treatment process must be evaluated for its capacity to comply with all
Industrial User Pretreatment Permit (1UP) limitations. [ 15A NCAC 02H .0906(b)(7) and .0905; NCGS 143-
215. 1 (a)(8)]
7. POTW Inspection & Monitoring of their IUs
The Permittee shall conduct inspection, surveillance, and monitoring activities as described in its Division
approved pretreatment program in order to determine, independent of information supplied by Industrial Users,
compliance with applicable pretreatment standards. [15A NCAC 02H .0908(e); 40 CFR 403.8(f)(2)(v)] The
Permittee must:
a. Inspect all Significant Industrial Users (SIUs) at least once per calendar year;
b. Sample all Significant Industrial Users (SlUs) at least once per calendar year for all SIU permit -limited
parameters including flow except as allowed under 15A NCAC .0908(e); and
c. At least once per year, document an evaluation of any non -significant categorical Industrial User for
compliance with the requirements in 40 CFR 403.3(v)(2), and either continue or revoke the designation as non-
significant.
8. IU Self Monitoring and Reporting
The Permittee shall require all Industrial Users to comply with the applicable monitoring and reporting
requirements outlined in the Division -approved pretreatment program, the industry's pretreatment permit, or in 15A
NCAC 02H .0908. [15A NCAC 02H .0906(b)(5) and .0905; 40 CFR 403.8(f)(1)(v) and (2)(iii); 40 CFR
122.440)(2) and 40 CFR 403.12]
9. Enforcement Response Plan (ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b) and (c) of the CWA (40 CFR 405 et. seq.), prohibitive discharge standards
as set forth in 40 CFR 403.5 and 15A NCAC 02H .0909, specific local limitations, and other pretreatment
requirements. All remedies, enforcement actions and other, shall be consistent with the Enforcement Response
Plan (ERP) approved by the Division. [15A NCAC 02H .0903(b)(7), .0906(b)(8) and .0905; 40 CFR 403.8(f)(5)]
10. Pretreatment Annual Reports (PAR)
The Permittee shall report to the Division in accordance with 15A NCAC 02H .0908. In lieu of submitting annual
reports, Modified Pretreatment Programs developed under 15A NCAC 02H .0904 (b) may be required to submit a
partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment
requirements and other pretreatment implementation issues.
For all other active pretreatment programs, the Permittee shall submit two copies of a Pretreatment Annual Report
(PAR) describing its pretreatment activities over the previous calendar year to the Division at the following
address:
Version 1110912011

NPDES Permit Standard Conditions
Page 18 of 18
NC DENR / Division of Water Quality / Surface Water Protection Section
Pretreatment, Emergency Response, and Collection Systems (PERCS) Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
These reports shall be submitted by March 1 of each year and shall contain the following:
a. Narrative
A narrative summary detailing actions taken, or proposed, by the Permittee to correct significant non-
compliance and to ensure compliance with pretreatment requirements;
b. Pretreatment Program Summaa (PPS)
A pretreatment program summary (PPS) on forms or in a format provided by the Division;
c. Significant Non -Compliance Report (SNCR)
A list of Industrial Users (IUs) in significant noncompliance (SNC) with pretreatment requirements, and the
nature of the violations on forms or in a format provided by the Division;
d. Industrial Data Summary Forms (IDSF)
Monitoring data from samples collected by both the POTW and the Significant Industrial Users (SIUs). These
analytical results must be reported on Industrial Data Summary Forms (IDSF) or on other forms or in a format
provided by the Division;
e. Other Information
Copies of the POTW's allocation table, new or modified enforcement compliance schedules, public notice of
Ns in SNC, a summary of data or other information related to significant noncompliance determinations for
Ns that are not considered SlUs, and any other information, upon request, which in the opinion of the Director
is needed to determine compliance with the pretreatment implementation requirements of this permit;
11. Public Notice
The Permittee shall publish annually a list of Industrial Users (IUs) that were in significant noncompliance (SNC)
as defined in the Permittee's Division -approved Sewer Use Ordinance with applicable pretreatment requirements
and standards during the previous twelve month period. This list shall be published within four months of the
applicable twelve-month period. [15A NCAC 02H .0903(b)(34), .0908(b)(5) and .0905 and 40 CFR
403.8(f)(2)(viii)]
12. Record Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results, along with
support information including general records, water quality records, and records of industrial impact on the
POTW and shall retain all other Pretreatment Program records as required by 15A NCAC 02H .0908(f). [15A
NCAC 02H .0908(f); 40 CFR 403.12(o)]
13. Pretreatment Program Resources
The Permittee shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved
pretreatment program. and retain a written description of those current levels of inspection. [I 5A NCAC 02H
.0906(b)(9) and (10) and .0905; 40 CFR 403.8(f)(3), 403.9(b)(3)]
14. Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not limited to local limits modifications, POTW
monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan modifications, shall be considered a
permit modification and shall be governed by 40 CFR 403.18, 15 NCAC 02H .0114 and 15A NCAC 02H .0907.
Version 1110912011

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NCO028711
Facility Information
Applicant/Facility
Name:
Berryhill Elementary School W WTP
Applicant Address:
3301 Stafford Drive; Charlotte, NC 28208
Facility Address:
10501 Windy Grove Road; Charlotte, NC 28278
Permitted Flow
Current: 0.006 MGD; Proposed Expansion to 0.008 MGD
Type of Waste:
I domestic
Facility/Permit Status:
Class II /Active; Expansion Modification.
County:
Mecklenburg County
Miscellaneous
Receiving Stream:
Lake Wylie
Stream Classification:
WS-V, B
Subbasin:
03-08-34,
Index No.
ll-(123.5)
Drainage Area (mi ):
2.07
HUC:
03050103
Summer 7Q10 (cfs)
0
303(d) Listed?`.
No
Winter 7Q10 (cfs):
0.15
Regional Office:
Mooresville
30Q2 (efs)
0.15
State Grid / USGS
Quad:
G15NW
Charlotte West, NC
Average Flow (cfs):
2.3
Permit Writer:
Ron Berry
IWC (%):
100%s
Date:
3/28/12 Revised
BACKGROUND
The Charlotte -Mecklenburg Board of Education is permitted to operate a 0.006 MGD extend
aeration domestic package WWTP at the Berryhill Elementary School in Mecklenburg County.
Because of student and support staff projected growth to 667 the Permittee is requesting an
expansion to 0.008 MGD. The school term is 38 weeks a year. This facility discharges through a
submerged pipe that extends 160 feet from shore into Lake Wylie, a class WS-V, B stream in the
Catawba River Basin.
A consultant has prepared an FAA and the Division concurs with expanding the existing
discharge. A preliminary design to optimize the existing operation for expanded 0.008 MGD was
provided. UV disinfection is planned but may not be installed if sufficient funds are not
available. An Authorization to Construct will be required
TREATMENT PROCESS
Influent enters the extended aeration package plant through a screen and accumulates in the
7,300 gallon equalization tank section. A pump will transfer the wastewater to the newly
expanded extended aeration section. From the aeration section the flow continues to a 26 ft2
clarifier section, then to the 3,000 gallon post assertion section, then to the chlorination section,
then through a flow weir into the dechlorination section, and then is discharged through a gravity
line into Lake Wylie. Tablet based devices provide the chemical interface for chlorination and
dechlorination, and dual blowers provide air. Accumulated sludge is routinely transferred from
the clarifier to the existing sludge holding section and a certified contractor pumps, hauls, and
disposes of the sludge.
The anticipated modified plant will remove a common partition between the aeration section and
sludge holding section thus increasing the size of the aeration basin. Two new 3,000 gallon
sludge tanks and new sludge transfer pumps will be added. Replacement of
chlorination/dechlorination with UV disinfection is planned.
Fact Sheet
NPDES NCO028711
Page 1 of 3

HISTORY
1976 Original 0.006 MGD permitted discharge to an unnamed tributary to Lake Wylie, a class
C stream. Limits were based on Lake Wylie strategy and waste load allocation.
1980 Extended outfall 2,615 feet as a submerge line into Lake Wylie 160 feet from shore.
Applied new waste load allocation and limits for BOD, NH3-N, and DO.
1987 Reclassified receiving stream to WS-III, B; Fecal coliform limits reduced.
1991 Added TRC monitoring.
1993 Permittee requested modification of BOD and NH3-N limits but was denied.
1996 Reclassified receiving stream to WS-V, temperature and conductivity monitoring added.
Facility selected seasonal NH3-N toxicity limits in lieu of quarterly toxicity test.
2001 Removed conductivity monitoring.
2005 Added TRC compliance date of February 1, 2007.
2010 Removed TRC compliance date. Issued existing permit.
2011 Received mod application for expansion to 0.008 MGD and EAA.
2012 Received amendment to mod application to add pending UV.
COMPLIANCE
Except for some minor reporting infractions this facility has a good compliance history.
PERMITTING STRATEGY
No additional load will be allowed so the permit limits will be adjusted where applicable to
sustain the existing permit waste load:
1) BOD: 17 mg/L x 0.006 MGD = 0.008 MGD = 12.8 mg/L monthly average limit and
19.1 mg/L daily limit
2) NH3-N winter: 9 mg/L x 0.006 - 0.008 MGD = 6.8 mg/L monthly average limit/34.0
mg/L daily limit
Other requirements/considerations:
3) TSS, pH, DO, TRC, Fecal Coliform, NH3-N summer limits defined for 0.006 MGD
continue unchanged for 0.008 MGD
4) Effluent temperature monitoring and existing instream monitoring will be the same for
0.006 MGD and 0.008 MGD
5) Monitoring frequencies do not change and are consistent for this Class II facility
6) No nutrient monitoring is required for this size permitted flow
Pending UV disinfection installation:
Replacement of the chlorination/dechlorination with UV disinfection is currently planned as part
of the expansion contingent on sufficient funds being available. Conditional language to address
the possible scenarios for disinfection changes, and a requirement to advise the Division on
disinfection status, will be included in the expansion effluent page TRC footnote
Additional Notifications and Approvals
A copy of the draft permit will be sent to Mecklenburg County, the DWR/PWSS/Mooresville
Regional Engineer, and to South Carolina Department of Health and Environmental Control for
review and comment.
SUMMARY OF PROPOSED CHANGES
In keeping with Division policies the following will be incorporated into the permit:
• A new effluent limit page for expansion to 0.008 MGD will be added.
• The supplement cover page narrative will be amended to address the expansion.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: February 1, 2012
Permit Scheduled to Issue: April 2012
Fact Sheet
NPDES NC0028711
Page 2 of 3

NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Ron Alerry at (91 0) 807-6396 or email [e-mail].
NAME: i/V1� DATE:
REGIONAL OFFICE COMMENTS
NAME:
SUPERVISOR: DATE:
Fact Sheet
NPDES NCO028711
Page 3 of 3

Dewberry
Dewberry & Davis, Inc.
613S Lakeview Road, Suite ISO
Charlotte, NC 28269-2618
704.SO9.9918
704.SO9.9937 fax
www.dewberry.coni
March 16, 2012
Mr. Ron Berry LDENR
Engineer I 19 2 112Surface Water Protection Section — NPDES
NC Division of Water Quality RCEBRN
1617 Mail Service Center --
Raleigh, NC 27699 — 1617
Reference: Charlotte Mecklenburg Schools
Berryhill Elementary School Wastewater Treatment Plant— NCO028711
Dewberry Project # 50046144
Dear Mr. Berry:
Dewberry & Davis, Inc. (Dewberry) submitted a modification to the Berryhill Elementary School NPDES
permit on behalf of Charlotte Mecklenburg Schools. A letter documenting the influent flow conditions,
daily monitoring reports, and a summary of the wastewater treatment plant was submitted on July 7,
2011. An Engineering Alternatives Analysis (EAA) and all applicable permit applications were submitted
on November 29, 2011. The purpose of the NPDES permit modification was to increase the permitted
average daily flows from 6,000 gallons to 8,000 gallons. Charlotte Mecklenburg Schools has received the
draft NPDES permit dated February 1, 2012.
As discussed during our February 9, 2012 phone conversation, this letter is being provided to document
that Charlotte Mecklenburg Schools desires to utilize an ultraviolet (UV) system as a form of disinfection
in addition to the currently permitted tablet feed chlorination and dechlorination systems. The draft
NPDES permit dated February 1, 2012 includes disinfection my means of a tablet feed chlorination and
dechlorination system along with a corresponding effluent monitoring limit for total residual chlorine.
Charlotte Mecklenburg Schools desires to use a UV system as the primary source of disinfection. The
tablet feed chlorination and dechlorination systems will be maintained as a secondary source of
disinfection. Based on our phone conversations, we understand that the draft NPDES permit will be
issued with conditions allowing a UV system as the primary source of disinfection and a tablet feed
chlorination and dechlorination system as the secondary source of disinfection. Please note that the UV
system will be bid as an additive bid item. If sufficient funds are present after award of the base bid, the
UV system will be constructed. If sufficient funds are not present after award of the base bid, the UV
system will not be constructed. Should the UV system not be constructed Charlotte Mecklenburg
Schools will notify the NC Division of Water Quality. Additionally, Charlotte Mecklenburg Schools will

�.
Mr. Ron Berry
Berryhill Elementary School WWTP— NCO028711
March 16, 2012
Page 2 of 2
continue operation of the Berryhill Elementary School wastewater treatment plant in the current
manner and monitor the effluent total chlorine residual.
Please note the $260 review fee was previously submitted on July 6, 2011.
Should you have any questions or comments, please do not hesitate to call me at [phone] or
email me at [e-mail].
Sincerely,
Dewberry & Davis, Inc.
<X • Wi—
Matthew B. West, P.E, LEED AP BD+C
Project Manager
Cc: Tom O'Dell, CMS
Skip Notte, P.E., LEED AP BD+C, Dewberry
P:\50046144\Ad m\Co rre s pond ence\ Lette rs\2011.11.29-Be rry.d ocx
V Dewberry

The Charlotte Observer Publishing Co.
charlotte, NC
North Carolina } ss Affidavit of Publication
Mecklenburg County}
THE CHARLOTTE OBSERVER
NCDENR/DWQ/POINT SOURCE B
1617 MAIL SERVICE CENTER
RALEIGH NC 27699
REFERENCE: 40508896 J.WEEDEN
030740/6636436 PERMIT NCO028711
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc., persona Lly appeared,
being duly sworn or affirmed according to Law,
doth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the Laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte,
County of -Mecklenburg, and State of North Carolina
and that as such he/she is fami Liar with the
books, records, files, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication.
PUBLISHED ON: 02/10
AD SPACE: 56 LINE
FILED ON: 02/16/12
NAME: CO1( CI (Y1,U-LLt."NN CQ.TITLE: 1
DATE:"L`C$
In Testimony Whereof I have hereunto set my hand and affixed my seal, the
day and y ar aforesaid.
Nota �� I�'%cmm-i ssion Expires:
My EjqArn QW27, 2016
Management CommissiouNPDES Unit
.1617 Mail sonabe Center •I
Rai NC 276931017 '
Notice of Intent to Issue a NPDES Wastewater Permit:
North Carolina Environmental -Management commission
M. to issue a NPDES wastewater discharge perama to the
m{s) 'istetl belowp I-,.
on comments regarding the -proposed permit will be
produntil 90 days after the publish data of this noika.'The
:tor of the NC Division of Water, Quality (DWO) may hold a
o hearing should there be a significant degree of.publ'o
N. Please saml.comments andlor. information requests to
1 at the above address. Interested persona may visit the
1 at 512 N. Salsbury Street, Raleigh, i to mview ioforma-
on file. 4ddabmal information on NPDES permits and mic
:e may be found on our wel itei
Ilpodal.ncdenwrgMeb/wq/ewplpshpdes/calorldai,;or by
Ig (919) 907d00e.
bho ,1,1anpirg BOE requested modification of permit
D20711 for oxpm arsion of Banyhill Elomenry School WC.TP
ecXienburg County: this modified permided dischar Is for
atl domestic wastewater to LeXe Wylie in theCemw�a a River
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Berry, Ron
From:
West, Matthew [[e-mail]]
Sent:
Monday, January 16, 2012 11:15 AM
To:
Berry, Ron
Cc:
Notte, Skip
Subject:
RE: Follow Up to Modification Application Berryhill Elementary School NCO028711
Attachments:
2012.01.16 - Table 1-EAA Economic Analysis.pdf
Mr. Berry —
Please see responses to your questions and comments below. A revised copy of Table 1 is attached for your review.
Please let me know if you have any other questions or if further clarifications are required.
Thanks,
Matt
Matthew B. West, PE, LEED AP BD+C
Project Manager
Dewberry
2301 Rexwoods Drive
Suite 200
Raleigh, NC 27607
919,424.3751
919.881.9923 fax
www.dewberry.com
From: Berry, Ron [mailto:ron.berry(ancdenr.gov]
Sent: Tuesday, December 13, 2011 3:20 PM
To: West, Matthew
Subject: Follow Up to Modification Application Berryhill Elementary School NCO028711
Mr. West,
The application and EAA for Berryhill Elementary School expansion to 8,000 gallons is being reviewed. For clarity the
following additional information is requested:
1) Breakdown the $488,000 Capital Cost for connecting to local utility ( per EAA cost estimate applied a 1.5 factor)
into
- Engineering design cost
- Construction and materials cost
- Tap on fee and other one time connection fees (looks like this is $8,000) An revised copy of Table 1 is
attached for your review and concurrence.
2) Verify existing treatment system has a single clarifier or dual clarifiers, document states dual but schematic
shows single lest) 9' x 6' compartment. The existing WWTP has a single clarifier with an approximate surface
area of 26 square feet. We apologize for the discrepancy in the documents.
3) Verify how reported flow is determine, no meter in system, suspect Permittee has been using incoming sanitary
water meter. The WWTP is equipped with a 60-degree V-notch weir located between the chlorine contact basin
and the Dechlorination basin. An ultrasonic level meter measures the height of the water passing over the weir.
This level meter communicates with a chart recorder (with totalizer) that records the flow being discharged by
the WWTP.
4) Stated two new 3,000 gallon tanks will be added for sludge holding, will the existing sludge storage section
remain? Why are you adding more sludge storage tankage? The existing sludge storage basin will be
eliminated. In order to provide adequate detention time in the aeration basin at a flow of 8,000 GPD, the wall
between the existing sludge storage basin and existing aeration basin will be removed. Thus, increasing the

volume and detention time in the aeration basin. The two new 3,000 gallon septic tanks will provide adequate
sludge storage for the WWTP.
5) Are the existing tablet chlorinator and dechlorinator single or dual tube systems? The existing tablet chlorinator
is a dual tube system, however only one tube is utilized at this time. The existing table dechorlinator is a dual
tube system and both tubes are being utilized at this time.
6) Exhibit 5 (plot plan) indicates the treated wastewater is conveyed from the waste treatment facility in a gravity
flow sewer extending to Quad Map, Figure 2. Verify the gravity line continues until it discharges directly into the
Catawba River ( Lake Wylie). If gravity line does not continue to Catawba River then where does it terminate
and how does the wastewater get to the Catawba River? The gravity line connected to the effluent of the
WWTP, continues until it directly discharges to the Catawba River (Lake Wylie).
The Mooresville Regional Office will be conducting a site inspection and prepare a report that will be reviewed in
concert with this modification application.
If you have any questions let me know.
Ron Berry [e-mail]
Engineer I
DWQ/Point Source/NPDES Complex Permitting Unit
NCDENR
Phone: [phone]
Fax: [phone]
Office: Archdale Building Room 925N
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed
to third parties unless the content is exempt by statute or other regulation.
Visit Dewberry's website at www.dewberry.com
This email transmission may contain confidential or privileged information. If you receive this email message in error,
notify the sender by email and delete the email without reading, copying or disclosing the email contents. The
unauthorized use or dissemination of any confidential or privileged information contained in this email is prohibited. If you
are not the intended recipient and intentionally intercept or forward this message to someone else, you may be subject to
criminal and/or civil penalties. See 18 U.S.C. 2511 et seq.

SOC PRIORITY PROJECT: No
To: NPDES Unit
Surface Water Protection Section
Attention: Ron Berry
Date: January 18, 2012
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES Permit No.: NCO028711
PART I - GENERAL INFORMATION
Physical Location
1. Facility and address: Berryhill Elementary School
% Charlotte -Mecklenburg Schools
3301 Stafford Drive 10501 Windy Grove Road
Charlotte, NC 28208 Charlotte, NC 28278
2. Date of last site investigation: February 19, 2010
3. Report prepared by: Michael L. Parker, Environmental Engineer lI
4. Person contacted and telephone number: Matthew West, [phone]
5. Directions to site: From the jet. of Old Dowd Road and Walkers Ferry Road in western
Mecklenburg County, travel southwest on Walkers Ferry Road = 2.0 miles to the WWTP
site. The plant site is on the left (east) side of the road and on the south side of the school
grounds.
6. Discharge point(s): Latitude: 350 12' 41"
Longitude: 800 59' 56" USGS Quad No.: G15NW
7. Receiving stream or affected surface waters: Lake Wylie
a. Classification: WS-IV, and B
b. River Basin and Subbasin No.: Catawba 030834
C. Describe receiving stream features and pertinent downstream uses: The discharge is
into a cove of Lake Wylie (Paw Creek arm). This area of the lake receives frequent
bodily contact through various water recreational activities. No other downstream
dischargers are known.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Actual treatment capacity: 0.006 MGD (Design Capacity)
b. Current permitted capacity: 0.006 MGD
C. Proposed re -rated capacity: 0.008 MGD

Page Two
C. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of a bar screen, a flow equalization basin, an aeration basin,
dual secondary clarifiers with sludge return, an aerated sludge holding tank, chlorine
(tablet) disinfection, and dechlorination.
d. Description of proposed WWT facilities: The proposed modifications to the existing
WWT facilities include the addition of an interval timer for the equalization pump,
the addition of two 3000 gallon capacity septic tanks for use as sludge storage tanks,
rehabilitation of the metal walls of the existing W WTP, and replacement of the RAS
pump.
e. Possible toxic impacts to surface waters: Chlorine is added to the waste stream,
however, dechlorination is provided.
2. Compliance Background: This facility has maintained a generally good compliance history
with only a few record keeping deficiencies noted in the past few years. A CEI was
performed at this facility on December 21, 2010, by MCWQP staff, and the WWTP was
found to be in excellent operational condition.
PART III - OTHER PERTINENT INFORMATION
Special monitoring or limitations (including toxicity) requests: None at this time (see Part
IV).
PART IV - EVALUATION AND RECOMMENDATIONS
The permittee, Charlotte -Mecklenburg Schools (CMS), has requested that the subject permit
be modified to allow for a re -rating to increase in the permitted capacity from 0.006 MGD to 0.008
MGD. This increase in capacity is necessary in order to accommodate an anticipated increase in
student/faculty enrollment expected for the 2012/2013 school year. CMS's engineering firm has
prepared an Engineering Alternative Analysis (EAA) that evaluates the various disposal alternatives
and ultimately offers supports for the proposed re -rating based on a review of the existing WWT
facilities and the available non -discharge disposal options.
The EAA notes that current well production records at the school reflect an average daily
water usage of 7.5 — 11.5 gallons/student, which is still below the 12 gallons/student design flow
used in the EAA preparation. Using a flow rate of 12 gallons/student/day would conservatively
allow for a student/faculty population of approximately 667, which would be expected to generate
the proposed 8000 gallons/day of flow proposed in this re -rating request.
Alternatives evaluated in the EAA include land application and connection to an existing
collection system. The nearest collection system is over 1.5 miles from the school and CMS has
indicated that it would be economically unfeasible given the distance and cost of the infrastructure
necessary to make the connection. The land application option was also discounted given the
availability and anticipated cost of the necessary 13 acres of land needed to assimilate the proposed
8000 gpd of flow.

Page Three
Given the familiarity of the RO staff with the existing WWT facilities and the area in and
around Berryhill school, it appears that a re -rating of the existing W WTP can be supported by the
findings and recommendations contained in the EAA. However, conversations with CO staff have
noted the possibility of the current NPDES permit limitations becoming more stringent should the
re -rating request be approved. Any reduction in the current effluent limitations as a result of the re -
rating to 8000 gpd will also necessitate a re-evaluation of the proposed facility modifications as
noted in the EAA. Additional facility changes (including additional treatment components not
proposed in the EAA) may be necessary to comply with the proposed effluent limitations.
Pending a final review by the NPDES Unit and approval of the draft NPDES permit, it is
recommended the permit re -rating request be approved.
Signature of Report Preparer 6ate
Water Quality Regional Supervisor Date
hAdsr\dsr12\beM hiIIre-raling.doc

NC 2010 Integrated Report Categories 4 and 5 Impaired Waters
,123eWaLer�s i��nN� C1a�e in'Category 5;,303�dJ;List fori,M_ercury due tt OSLat�ewi�d�`elfish con5u_'mption advicef, orseveral fish species
er AU —Name AU —Description LengthArea AU —Units Classification
Paranicter Reason for Rating Usc Category I Collection Year 303(d)year
River Basin Mountain Island Lake -Catawba River Watershed 0305010114
(j) 11-120-(2.5) Long Creek
From a point 0.6 mile downstream of
11.3 FW Miles
WS-IV
Mecklenburg County SR 2074 to a point 0.4
mile upstream of Mecklenburg County SR
1606
5 Copper
Standard Violation Aquatic Lilb
2006
2008
4t Turbidity
Standard Violation Aquatic Life
2008
2008
Q 11-115-(1) McDowell Creek
From source to U.S. Hwy. 21
1.6 FW Miles
C
+ 0 Ecological/biological Integrity FishCom
Poor Bioclassification Aquatic Lifc
2002
1998
Q 11-115-(1.5)a McDowell Creek
From U.S. Hwy. 21 to SR 2136 Mecklenburg
4.4 FW Miles
WS-IV
Co
4b EcologicaVbiological Integrity FishCom
Poor Bioclassification Aquatic Life
2002
1998 _I
Q 11-115-(1.5)b McDowell Creek
FromSR2136 Mecklengurg Co to a point
2.9 FW Miles
WS-IV
0.7 mile upstream of mouth
4b Ecological/biological Integrity Benthos
Fair Bioclassification Aquatic Life
2007
2000
Q 11-115-(5) McDowell Creek
From a point 0.7 mile upstream of mouth
2.7 FW Miles
WS-IV;CA
to Mountain Island Lake, Catawba River
4b Ecological/biological Integrity Benthos
Poor Bioclassification Aquatic Life
2002
2000
Catawba River Basin
Lake Wylie -Catawba River Watershed 0305010115
Q 11-130a Catawba Creek
From source toSR2446, Gaston
5.6 FW Miles
C
5 Ecological/biological Integrity Benthos
Fair Bioclassification Aquatic Life
1990
1998
Q
11-130b Catawba Creek
From SR2446, Gaston to SR2439, Gaston
3.1 FW Miles
C
5 Ecological/biological Integrity Benthos
Fair Bioclassification Aquatic Lite
1990
1998
QQ
11-130c. Catawba Creek
FromSR2439 to Lake Wylie
4.9 FW Miles
-
C
5 Ecological/biological Integrity FishCom
Poor Bioclassification Aquatic Life
2007 1998
Q
11-(123.5)b CATAWBA RIVER
South Fork Catawba River Arm of Lake Wylie
1,291.0 FW Acres
WS-V,B
(Lake Wylie South k
Catawba Arm) North
Carolina portion
5 Copper
Standard Violation Aquatic Life
2006
2008
5 High Water Temperature
Standard Violation Aquatic Lile
2008
2010 J
QQ
11-135a Crowders Creek
From source to SR 1118
1.9 FW Miles
C
5 EcologicaVbiological Integrity Benthos
Fair Bioclassification Aquatic Life
2002
1998
Ecological/biological Integrity FishCom
Poor Bioclassification Aquatic Life
2004
1998
J5
NC 2010 Integrated Report Category 4 and 5 303(d) List
EPA Approved Aug 31, 201 9/20/2010
Page 23 of 145

11 Dewberry
Dewberry & Davis, Inc.
6135 Lakeview Road, Suite 1 S0
Charlotte, NC 28269-2618
704.509.9918
704.509.9937 fax
www.dewberry.com
November 29, 2011
Mr. Ron Berry LDENR
'��(jM
Engineer I Surface Water Protection Section—NPDES 30 Zp))
NC Division of Water Quality
1617 Mail Service Center gTE" QUgLURCE BRA
Raleigh, NC 27699 —1617
Reference: Charlotte Mecklenburg Schools
Berryhill Elementary School Wastewater Treatment Plant — NCO028711
Dewberry Project # 50046144
Dear Mr. Berry:
In response to your July 27, 2011 correspondence, Dewberry & Davis, Inc. (Dewberry) is submitting
additional documentation related to the request for a modification to the Berryhill Elementary School
National Pollutant Discharge Elimination Permit (NPDES). The requested modification is to increase the
average daily discharge from 6,000 gallons/day (GPD) to 8,000 GPD. Dewberry submitted a letter
documenting the influent waste stream, a summary of the daily monitoring reports, and proposed
improvements to the Berryhill Elementary School Wastewater Treatment Plant on July 6, 2011.
As requested the following additional documentation is included with this submittal:
• One (1) original and two (2) copies of NPDES Application — Form D
• One (1) original and two (2) copies of the Berryhill Elementary School Wastewater Treatment
Plant Expansion Engineering Alternatives Analysis
• One (1) original and two (2) copies of the certified letter and Local Government Review Form
sent to Mecklenburg County and the executed information returned to Charlotte Mecklenburg
Schools.
• Three (3) copies of the certified mail receipt from submittal to Mecklenburg County.
• One (1) original and two (2) copies of the certified letter and Local Government Review Form
sent to the City of Charlotte and the executed information returned to Charlotte Mecklenburg
Schools.
• Three (3) copies of the certified mail receipt from submittal to the City of Charlotte.
Please note the $260 review fee was previously submitted on July 6, 2011.

Mr. Ron Berry
Berryhill Elementary School WWTP — NCO028711
November 29, 2011
Page 2 of 2
Should you have any questions or comments, please do not hesitate to call me at [phone] or
email me at [e-mail].
Sincerely,
Dewberry & Davis, Inc.
-21
Matthew B. West, P.E, LEED AP BD+C
Project Engineer
Enclosures
Cc: Tom O'Dell, CMS
Skip Notte, P.E., LEED AP BD+C, Dewberry
P:\50046144\Adm\Correspondence\Letters\2011.11.29-Berry.docx
TIP Dewberry

1. Background
The Charlotte Mecklenburg Board of Education/Charlotte Mecklenburg Schools (CMS) System
includes the Berryhill Elementary School (school), a K-5 elementary school located in west Charlotte
at the intersection of Windy Grove Road and Walkers Ferry Road. The school is situated on 15-acres
of land on Parcel No. 11326101 (See Exhibit 1). The school was built approximately 30 years ago and
includes an on -site wastewater treatment plant (WWTP). CMS operates the WWTP under a
'
National Pollutant Discharge Elimination System (NPDES) permit issued by the NC Department of
Environment and Natural Resources (NCDENR) Division of Water Quality (DWQ). The permit
number is NC0028711 and the last re- issuance was on July 5, 2010 with an expiration date of June
30, 2015. The NPDES permit authorizes an average daily discharge of 6,000 gallons per day (GPD) by
the WWTP. The WWTP is an extended aeration wastewater treatment facility consisting of a bar
screen, flow equalization basin, aeration basin, dual secondary clarifiers, sludge return, sludge
holding tanks, and disinfection unit. Treated wastewater effluent is discharged via an outfall to Lake
Wylie in the Catawba River Basin and the discharge is regulated under the same NPDES permit
'
number NC0028711. The permit contains discharge limitations and monitoring requirements that
are summarized and reported to DWQ on a monthly basis (See Exhibit 2).
The purpose of the proposed WWTP expansion is to rerate the WWTP to an average daily flow of
'
8,000 GPD to support a proposed increase in student population at the school. Prior to designing
and permitting the rerating of the WWTP, CMS is submitting this Engineering Alternatives Analysis
(EAA) to obtain an increase in the permitted average daily flow associated with the NPDES permit.
'
Dewberry & Davis, Inc. (Dewberry) prepared a feasibility study to evaluate if the WWTP is capable of
treating increased flows of 8,000 GPD and any modifications that may be required. However, a draft
NPDES permit for an average daily flow of 8,000 GPD must be obtained prior to CMS proceeding
with the recommendations for modifications to the WWTP.
Dewberry contacted the US Geological Survey (USGS) to obtain the 7Q10 and 30Q2 for Lake Wylie at
'
the location of the outfall. USGS provided the following response:
"The USGS does not provide low -flow statistics for streams within impounded reaches. The
'
techniques used by the USGS for completing low -flow analyses do not include a means of
quantifying the effects of storage and flow circulation common within impounded reaches on
low -flow conditions. Use of the current techniques applicable to riverine reaches would result
in a low -flow estimate that is likely higher than the true estimate."
The USGS recommended that Dewberry contact DWQ for further guidance. Dewberry contacted
Mr. Ron Berry (reviewer of this application) on October 25, 2011 to seek guidance. Mr. Berry
advised that the correspondence from USGS should be included with the Engineering Alternatives
Analysis and that DWQ would confirm the low flows (See Exhibit 3).
The stream classification of Lake Wylie (Catawba River) at the location of the existing wastewater
discharge outfall is WS-V and B waters in sub -basin 03-84-34 of the Catawba River Basin. Based on a
review of these stream classifications, wastewater discharges are allowable. As this Engineering
' Alternatives Analysis (EAA) has been prepared to document and increase in flow to an existing
Page 1 of 4
1

I
11
1
1
1
wastewater discharge, it is assumed the proposed increase from 6,000 GPD to 8,000 PGD is
allowable.
The Basinwide Water Quality Plan has been reviewed. Based on this review, there does not appear
to be any NPDES permitting strategies that would limit the proposed increase of the average daily
flow from 6,000 GPD to 8,000 GPD. Additionally, the Basinwide Water Quality Plan does not
indicate that there are any known occurrences of threatened or endangered species in the location
of this existing wastewater discharge outfall. However, the North Carolina Natural Heritage
Program data has been reviewed to determine the occurrence of threatened and endangered
species within two miles of the existing discharge. Three endangered species are listed has having
been observed within two miles of the existing discharge. The Bald Eagle, Carolina Heel Splitter
(freshwater mussel), and Georgia Aster (flower) were identified.
Lake Wylie is not listed as impaired on the 303(d) list and/or subject to impending Total Maximum
Daily Loads (TMDLs).
Based on the review of these documents, it appears that the proposed increase from 6,000 GPD to
8,000 GPD of the existing wastewater discharge from Berryhill Elementary School is an allowable
modification and discharge.
2. Population Projections
The North Carolina 2T Rules provide wastewater design flow rates. 15A NCAC 02T .0014 states that
for schools with a cafeteria the daily flow rate for design is 12 gallons/student. It should be noted
that this daily flow rate accounts for faculty. A review of well production records at the school
provide an average daily flow per student that ranges from approximately 7.5 —11.5
gallons/student. These average daily flows account for faculty as well. In order to use the most
conservative approach an average daily flow rate of 12 gallons/student will be used.
The use of an average daily flow rate of 12 gallons/student would allow a student population of 667
students and associated staff. This would provide a calculated average daily wastewater flow rate of
8,000 GPD for the school. The increase of the permitted average daily flow associated with the
NPDES permit for the school from 6,000 GPD to 8,000 GPD will serve a student population of 667
students based on an average daily flow rate of 12 gallons/student.
3. Evaluation of Technologically Feasible Alternatives
The Berryhill Elementary School WWTP is currently authorized to discharge 6,000 GPD to Lake Wylie
in the Catawba River Basin under NPDES permit NC0028711. This application proposes an increase
in the average daily flow rate for the WWTP to 8,000 GPD. Several alternatives of this WWTP
discharge have been evaluated, including the following: continue current practice of direct
discharge to surface water, connection to an existing wastewater treatment system, land
application, wastewater reuse, or a combination of discharge options.
t The direct discharge option would be an extension of the current practice of discharging to Lake
Wylie under a NPDES permit. The expansion from 6,000 GPD to 8,000 GPD would include the
' Page 2 of 4

'
following modifications/upgrades: an interval timer fort he equalization pump, addition of two
3,000 gallon septic tanks for use as sludge holding tanks, as well as regular maintenance items such
'
as draining, inspecting, sandblasting, repainting walls of the WWTP, and replacement of the return
activated sludge (RAS) pump. A Wastewater Treatment Plant Schematic Plan is provided in Exhibit 4
and a utility plan of the wastewater treatment facility with the outfall identified is included in Exhibit
'
S, as prepared by Wash Hatem Nelson Architects, dated September 30, 2005.
As a second option, connecting to an existing public wastewater collection and treatment system
'
operated by Charlotte Mecklenburg Utilities through a sewer extension was considered, including
two alternative connections. The first option for connection is approximately 1.5 miles away and
would require boring under Lake Wylie and easement acquisition; the second option is
approximately 2 miles away, not requiring a boring under Lake Wylie. The infrastructure
'
improvements necessary to connect to the existing sewer include a duplex pump station, boring for
option 1, and 1.5-2 miles of force main for connection to the existing system in addition to upgrades
to the WWTP (same as the direct discharge option). The instantaneous flow to the sewer has been
assumed to be 45 gallons per minute (gpm) for pump and piping sizing criteria. The economic
analysis is based on option 2,;because this option is anticipated to incur lower equipment costs, and
the same operational costs. In addition, it is anticipated that costs would be incurred for the
acquisition of utility easements. Further information on the assumptions and locations of sewer are
provided in Exhibit 6. It is not expected that a regional sewer system will be available within the
next five years to receive waste from the School. This has been confirmed by Charlotte
Mecklenburg Utilities.
A third option evaluated included land application of the treated wastewater. Berryhill Elementary
does not own sufficient land for application; thus it has been assumed that land would be available
at local real estate prices. A land area of approximately 13 acres has been estimated as necessary,
derived from the underlying assumptions and calculations for this option found in Exhibit 7. The
land application disposal option includes the cost of land acquisition, application equipment, in
addition to upgrades to the WWTP (same as in direct discharge option).
' Reuse of the 8,000 GPD treated wastewater from a membrane bioreactor (MBR) package WWTP
was considered as an alternative to direct discharge. Reuse of the wastewater on the onsite soccer
fields where children are playing does not align with the Berryhill Elementary School policy, nor does
' the school own sufficient land area to support disposal of the entire volume of treated effluent.
Other potential operations that may use re -use water, such as a sod farm, golf course, or power
plant, are not located in the vicinity of the school. This option was not deemed technically feasible
for the purpose of this analysis.
A combination of the options above was considered impractical given the low flow of the system.
4. Evaluation of Economic Feasibility of Alternatives and Recommendation
A 20-year Present Value Cost Analysis (PVCA) was performed for the technically feasible alternatives
presented in the previous section: direct discharge to Lake Wylie under a revised NPDES permit,
connecting to an existing sewer system and land application of treated wastewater. Table 1
provides a comparison of the three technically feasible alternatives. Direct discharge provides the
' lowest cost option, with connection to sewer estimated at 10x the present value of direct discharge,
and land application estimated at nearly 75x the present value of direct discharge.
' Page 3 of 4

Based on the analyses contained in this EAA, it is recommended that CMS move forward with
implementation of the increase in the NPDES permit to 8,000 GPD and continue a direct discharge
to Lake Wylie with associated plant improvements to process the increase in flow.
J
d
1
11 J
I
Page 4 of 4
J

M M= s= M M M M M M M M M M
= M M IM
Table 1. Summary of Wastewater Discharge Alternatives Present Value Cost Analysis (PVCA)
Berryhill Elementary School Wastewater Treatment Plant
Direct Discharge
Land Application
Connection to Sewer4"
Capital Costs
Land Acquisition" 2,3
$0
$6,500,000
$0
Equipment, Installation, Engineering & Construction°' 5
$70,800
$70,800
$488,000
Total Capital Requirement
$70,800
$6,570,800
$488,000
Recurring Costs
CI&M, including labor and replacement partsb''
$18,600
$18,600
$14,640
Laboratory costs8
$14,000
$3,500
$3,500
Residual disposal cost
$2,700
$2,700
$0
Connection & sewer use fees10
$0
$0
$600
Utility costs
$5,500
$5,500
$500
Total Annual Costs
$40,800
$30,300
$19,240
Present Value Cost Analysis (PVCA)"' 1
Present Value
$98,000
$7,200,000
$900,000
Notes and Assumptions
1. Land costs on the Western side of Charlotte, based on discussion with the city is $500,000 per acre.
2. Land area required for application option is 13 acres.
3. Connection to sewer will likely require easement acquisition, the cost of which is unknown at this time.
4. Connection to sewer is based on installation of 11,000 fta of 3" force main and 45gpm pump station.
5. Total installed project cost for connection to sewer is 1.5x estimated equipment cost plus estimated $8,000 for connection to sewer.
6. Maintenance costs have been assumed to be "3%of equipment cost plus operating labor.
7. Operating cost for WWTP are based on discussion with CMS on historical operating costs, escalated for plant expansion.
8. Currently monthly laboratory costs are used for direct discharge option; alternative options assume 25%of current laboratory costs.
9. Residuals disposal based on discussion with CMS on historical operating cost of the WWTP, escalated for capacity increase.
10. Sewer use fee has been estimated around $50 per month, from preliminary discussion on cost with Charlotte -Mecklenburg Utilities.
11. PVCA calculated assuming life of 20 years.
12. PVCA has been calculated assuming current EPA discount rate of 1.5%.
Dewberry
11/10/2011 1 of 1

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Table 1. Summary of Wastewater Discharge Alternatives Present Value Cost Analysis (PVCA)
Berryhill Elementary School Wastewater Treatment Plant
Direct Discharge
Land Application
Connection to
Sewer°
Capital Costs
Land Acquisition"2,3
$0
$6,500,000
$0
Equipment, Installation, Engineering & Construction
$70,800
$70,800
$488,000 6
Total Capital Requirement
$70,800
$6,570,800
$488,000
Recurring Costs
0&M, including labor and replacement partS6' 7
$18,600
$18,600
$14,640
Laboratory costs
$14,000
$3,500
$3,500
Residual disposal cost
$2,700
$2,700
$0
Connection & sewer use fees10
$0
$0
$600
Utility costs
$5,500
$5,500
$500
Total Annual Costs
$40,800
$30,300
$19,240
Present Value Cost Analysis (PVCA)11,12 —
Present Value
$98,000
$7,200,000
$900,000
Notes and Assumptions
1. Land costs on the Western side of Charlotte, based on discussion with the city is $500,000 per acre.
2. Land area required for application option is 13 acres.
3. Connection to sewer will likely require easement acquisition, the cost of which is unknown at this time.
4. Connection to sewer is based on installation of 11,000 ft' of 3" force main and 45gpm pump station.
5. Estimated construction and materials cost is $320,000. Engineering, surveying, geotechnical, and construction adminstration fees are estimated as
$160,000, 1.5x the construction and material costs. Estimated tap/connection fee is $8,000.
6. Maintenance costs have been assumed to be'"3%of equipment cost plus operating labor.
7. Operating cost for W WTP are based on discussion with CMS on historical operating costs, escalated for plant expansion.
8. Currently monthly laboratory costs are used for direct discharge option; alternative options assume 25% of current laboratory costs.
9. Residuals disposal based on discussion with CMS on historical operating cost of the W WiP, escalated for capacity increase.
10. Sewer use fee has been estimated around $50 per month, from preliminary discussion on cost with Charlotte -Mecklenburg Utilities.
11. PVCA calculated assuming life of 20 years.
12. PVCA has been calculated assuming current EPA discount rate of 1.5%.
Dewberry
1/16/2012 1 of 1

Capital Program Services
Charlotte -Mecklenburg Schools Charlotte -Mecklenburg Schools and Lend Lease, Inc. Lend Lease
26.Oct-2011
OCT 3 1 2011
Mr. Curt Walton
Office of the City Manager
City of Charlotte
600 East 4th Street
Charlotte, NC 280202
Re: Berryhill Elementary School
Dear Sir:
In Association with
R.J. Leeper Company, Inc.
Attached you will find a copy of the Local Government Review Form required by NPDES (National Pollutant
Discharge Elimination System) related to a waste water treatment plant expansion project at Berryhill Elementary
School. Charlotte -Mecklenburg Schools plans to begin this project early next year. As part of the approval process,
NPDES requires local government jurisdictions to review, complete and notarize forms. Upon completion please
return to:
Tom O'Dell
Deputy Program Director
CMS Auxiliary Services
3301 Stafford Drive
Charlotte, NC 28208
I would appreciate the return of this information within the 15 day period indicated on the form. Thank you in
advance for your cooperation.
Sincerely,
Capital Program Services
�j
Tom O'Dell
Deputy Program Director
cc: File 1.0
Dol 035 - Created in Prolog.
3301 Stafford Drive Charlotte NC 28208
Telephone [phone] Facsimile 980 343 6047
wwwcros.kl 2.nc.us/cmsdepartments/construction

Attachment A. Local Government Review Form
General Statute Overview: North Carolina General Statute 143-215.1 (c)(6) allows input from local governments in the
issuance of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Environmental
Management Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge facility
until it has received a written statement from each city and county government having jurisdiction over any part of the lands on
which the proposed facility and its appurtenances are to be located. The written statement shall document whether the city or
county has a zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is
consistent with the ordinance. The EMC shall not approve a permit application for any facility which a city or county has
determined to be inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to
have statewide significance and is in the best interest of the State.
Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant
shall request that both the nearby city and county government complete this form. The applicant must.
• Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and
the county by certified mail, return receipt requested.
• If either (or both) local government(s) fail(s) to mail the completed form, as evidenced by the postmark on the certified
mail card(s), within 15 days after receiving and signing for the cetifted mail, the applicant may submit the application to
the NPDES Unit.
• As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit
a copy of the certified mail card along with a notarized letter stating that the local government(s) failed to respond within
the 15-day period.
Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over
any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this
form to the applicant within 15 days of receipt. The form must be signed and notarized.
Name of local government
(City/County)
Does the city/co my have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be
located? Yes M No [ ] If no, please sign this form, have it notarized, and return it to the applicant. 1
� IVYYJ
Does the city/county have in effect a zoning or subdivision ordinance? Yes [4 No [ ] nW
If there is a zoning or subdivision ordinance in effect, is the plan for the proposed facility consistent with the ordinance? Yes [
No [ ]
Date 0 1 �� 1 t Signature•
(City Manager/Ge 4entegx1
• , • CJ� �^ \i
Stain of 'OJ IL,Q/b � ,County of kn b
On this _� T1'�• d`ay-of NOOttKM+T6&✓ , d personally appeared before me, the said
^
name W vy.r JC S W OL� TO ►'� r U L to me known and known to me to be the person described in
and who executed the foregoing document and he (or e) acknowledged that he (or she) executed the same and being duly sworn
by me, made oath that the statements in the foregoing document are true. ^ ^
My Commission expires 30 ,ti nature of Notary Public)
Notary Public (Official Seal)
EAA Guidance Document Version: June 23, 2005
Page 9 of 8

NPDES APPLICATION - FORM D
For privately owned treatment systems treating 100% domestic wastewaters <1.0 MGD
Mail the complete application to:
N. C. DENR / Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit 000028711
If you are completing this form in computer use the TAB key or the up - down arrows to moue from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name
Charlotte -Mecklenburg Board of Education
Facility Name
Berryhill Elementary School WWTP
Mailing Address
3301 Stafford Drive
City
Charlotte
State / Zip Code
North Carolina 28208
Telephone Number
[phone]
Fax Number
[phone]
e-mail Address
Dottie. stowe®ems.k12.ne.us
2. Location of facility producing discharge:
Check here if same address as above ❑
Street Address or State Road 10501 Windy Grove Road
City Charlotte
State / Zip Code North Carolina 28278
County Mecklenburg
u
3. Operator Information:
Name of the firm, public organization or other entity that operates the facility. (Note that this is not
referring to the Operator in Responsible Charge or ORC)
Name Charlotte -Mecklenburg Board of Education
Mailing Address 3301 Stafford Drive
City Charlotte
State / Zip Code North Carolina 28208
Telephone Number [phone]
Fax Number [phone]
1 of 3 Form-D 05/08

NPDES APPLICATION - FORM D
For privately owned treatment systems treating 100% domestic wastewaters <1.0 MGD
4. Description of wastewater:
Facility Generating Wastewater(check all that apply):
Industrial
❑
Number of Employees
Commercial
❑
Number of Employees
Residential
❑
Number of Homes
School
®
Number of Students/Staff 667*
Other
❑
Explain:
Describe the source(s) of wastewater (example: subdivision, mobile home park, shopping centers,
restaurants, etc.):
All wastewater received by the WWTP is from Berryhill Elementary School.
Population served: 667*
* 667 students is the proposed population to be served as part of the rerating of the WWTP and
increase in the NPDES permit average daily discharge from 6,000 GPD to 8,000 GPD. This is based on
an average daily flow per student of 12 gallons/student as provided in the NC 2T rules.
5. Type of collection system
® Separate (sanitary sewer only)
6. Outfall Information:
❑ Combined (storm sewer and sanitary sewer)
Number of separate discharge points 1
Outfall Identification number(s) 1
Is the outfall equipped with a diffuser? ❑ Yes ® No
7. Name of receiving stream(s) (Provide a map showing the exact location of each outfall):
Catawba River (Lake Wylie)
8. Frequency of Discharge: ❑ Continuous ® Intermittent
If intermittent:
Days per week discharge occurs: 5 Duration: 5 hours C°S� ad 0-e^'
9. Describe the treatment system
List all installed components, including capacities, provide design removal for BOD, TSS, nitrogen and
phosphorus. If the space provided is not sufficient, attach the description of the treatment system in a
separate sheet of paper.
Influent bar screen, 7,400 gallon flow equalization basin, 3,300 gallon sludge holding
tank, 8,400 gallon aeration basin, 26 square foot clarifier, post aeration basin, 635 gallon
disinfection unit, dechlorination chamber (10,000 gallon capacity), sludge return pump.
An approximate capacity of all of the above listed components is provided.
2 of 3 Form-D 05/08

NPDES APPLICATION - FORM D
For privately owned treatment systems treating 100% domestic wastewaters <1.0 MGD
10. Flow Information:
Treatment Plant Design flow 0.006 MGD
Annual Average daily flow 0.005 MGD (for the previous 3 years)
Maximum daily flow 0.005 MGD (for the previous 3 years)
11. Is this facility located on Indian country?
❑ Yes ® No
12. Effluent Data
Provide data for the parameters listed. Fecal Coliform, Temperature and pH shall be grab samples, for all other
parameters 24-hour composite sampling shall be used. If more than one analysis is reported, report daily maximum
and monthly average. (only one analysis is reported, report as daily maximum.
Parameter
Daily
Maximum
Monthly
Average
Units of
Measurement
Biochemical Oxygen Demand (BODs)
12
4
mg/L
Fecal Coliform
180
5
mg/L
Total Suspended Solids
38
8
mg/L
Temperature (Summer)
28.9
22.3
°C
Temperature (Winter)
20.2
I L9
°C
pH
8.9
7.2
Standard Units
13. List all permits, construction approvals and/or applications:
Type Permit Number Type
Hazardous Waste (RCRA) NESHAPS (CAA)
UIC (SDWA)
NPDES
PSD (CAA)
Non -attainment program (CAA)
NCO028711
14. APPLICANT CERTIFICATION
Ocean Dumping (MPRSA)
Dredge or fill (Section 404 or CWA)
Other
Permit Number
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
name
rI
Signature of
North Carolina General Statute 143-215.6 (b)(2) states: Any person who knowingly makes any false statement representation, or certification in any
application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the Environmental Management
Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or monitoring device or method
required to be operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be
guilty of a misdemeanor punishable by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001
provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.)
3 of 3 Form-D 05/08

NCDENR response for NPDES permit modification for Berryhill Elementary School
From: Berry, Ron
Sent: Wednesday, July 27, 2011 4:40 PM
TO: 'Matthew B. West, P.E.'
Subject: NCDENR response for NPDES permit modification for Berryhill
Elementary
School
Mr. West:
The Division has reviewed your July 6, 2011 letter, Berryhill Elementary
school NPDES permit
modification request, and has determined that this is a major permit modification.
The proper NPDES
application must be completed and submitted, in this case NC Form D. Also, since you
requested
increasing the permitted discharge an EAA must be submitted in conjunction with the
application.
Three copies of all submitted documents are required. The $260 fee was appropriate
for the NPDES
modification.
The active NPDES permit has an assigned waste load allocation which cannot
be exceeded
thus, impacting the effluent limits that will apply for the increased flow. This may
further impact your
calculation for the rerate.
As you noted , the rerate and subsequent equipment changes will require
completion and
submittal of an Authorization to construct (A to C) application to the
Construction Grants & Loans
Section for approval. You cannot submit the A to C application until a modified
NPDES permit has been
issued.
All of this information, guidance, and forms are available on our web site:
http://portal.ncdenr.org/web/wq/swp/ps/npdes/permitprocess
If you have any questions you can contact the undersigned.
sincerely,
Ron Berry [e-mail]
Engineer I
DWQ/Point Source/NPDES Complex Permitting unit
NCDENR
Phone: [phone]
Fax: [phone]
office: Archdale Building Room 925N
E-mail correspondence to and from this address may be subject to the North Carolina
Public Records
Law and may be disclosed to third parties.
W���t �� ct,h �+^A�""-.� l� Mh
cE./n. S �2 Page 5--cl-
(:-;,,el5 -� 5Ar4� i-v� eLlto ' `)1_4 use's 05

9 Dewberry
Dewberry & Davis, Inc.
6135 Lakeview Road, Suite 150
Charlotte, NC 28269-2618
704.509.9918
704.509.9937 fax
www.dewberry.com
July 6, 2011
Mr. Bob Sledge
Specialist
Surface Water Protection Section — NPDES
NC Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699 —1617
Reference: Charlotte Mecklenburg Schools
Berryhill Elementary School Wastewater Treatment Plant — NCO028711
Dewberry Project # 50046144
Dear Mr. Sledge:
As discussed in our phone conversation on May 2, 2011, Dewberry & Davis, Inc. (Dewberry) is submitting
this letter for your review to request a modification to the Berryhill Elementary School National
Pollutant Discharge Elimination Permit (NPDES). The requested modification is to increase the average
daily discharge from 6,000 gallons/day (GPD) to 8,000 GPD. This modification to the NPDES permit is
being requested as there is no public sanitary sewer service available in this area and no plans to provide
sanitary sewer are currently being considered. It is our understanding that major modification to this
minor NPDES permit will be required.
Charlotte Mecklenburg Schools (CMS) operates a wastewater treatment plant (WWTP) at Berryhill
Elementary School currently permitted for average daily discharge of 6,000 GPD under National
Pollutant Discharge Elimination System (NPDES) permit NC0028711. The WWTP discharges to the
Catawba River (Lake Wylie), subbasin 30084. Dewberry has performed a feasibility study that evaluated
the current WWTP capacity and options for expansion. Based on the feasibility study it appears that the
WWTP processes and equipment may be adequately sized and that the average daily flow can be
reliably increased to 8,000 GPD based on the hydraulic loading with only minor modifications to the
WWTP. To confirm the results of the feasibility study, CMS has obtained four composite samples of the
influent waste stream. A summary of these samples of the influent waste stream is provided in Table 1
below.
JUI. 1 1 2011
".1Tv

Mr. Bob Sledge
Berryhill Elementary School WWTP - NC0028711
July 7, 2011
Page 2 of 5
Table 1. Influent Waste Stream Sampling Results
Parameter
Week
Week
Week
Week
Minimum
Average
Maximum
to Evaluate
1
2
3
4
(5/17)
(5/24)
(6/1)
(6/9)
CBOD (mg/0
326
422
463
498
326
427
498
TSS(mg/I)
184
266
282
332
184
266
332
PH (standard
7.8
7.5
7.3
7.5
7.3
7.5
7.8
units)
TKN (mg/1)
58.6
64.1
49.4
54.7
49.4
56.7
64.1
Ammonia
19.8
22.1
8.12
0.97
0.97
12.75
22.10
(mg/0
Temperature
20.9
24.5
26.2
27.4
20.9
24.8
27.4
(`F)
Dissolved
4.95
3.51
3.47
3.08
3.08
3.75
4.95
Oxygen
(mg/0
Notes:
5/17 - Added about 25 Ibs of soda ash on 5/16
6/1- Samples taken at 10:30 am. All other samples taken at 1:00 pm
6/9 - Day before school is out for the summer
The results of the influent waste stream sampling showed that the influent waste was higher strength
than was assumed in the feasibility study. If the NC Division of Water Quality (DWQ) determines that
the average daily flow can be increased to 8,000 GPD, the WWTP will again be evaluated to determine if
it can meet the discharge limits set forth for the increase flow.
A summary of the daily monitoring reports (DMRs) for the period of January 2009 -January 2011 is
provided below. This information is being included to provide DWQ with pertinent information about
the operation and treatment abilities of the WWTP in its current state. Table 2 provides the parameters
monitored under the permit and the results based on the current operation. The minimum, average,
and maximum values are provided for your reference.
- f Dewberry

r
Mr. Bob Sledge
Berryhill Elementary School WWTP - NC0028711
July 7, 2011
Page 3 of 5
Table 2. Summary of Daily Monitoring Reports
Parameter
Limits per NPDES
Daily Monitoring Reports Summary
permit
Monthly
Daily
Daily
Average
Average
Average
Daily
Average
Maximum
Minimum
Minimum
Maximum
Maximum
Flow (MGD)
0.006
0.005
0.005
0.005
0.005
0.005
BOD, 5-day (20'
17
25
2.00
2.57
3.70
5.22
12.00
C) (mg/L)
Total Suspended
30
45
5.00
6.17
8.45
11.91
38.00
Solids (mg/L)
NH3 as N (April 1
2
10
0.10
0.12
0.16
0.24
0.70
- October31)
(mg/L)
NH3 as N
9
35
0.10
0.26
1.10
1.90
8.12
(November 1-
March 31)
(mg/L)
Dissolved
Not less
4.47
6.59
7.68
8.76
15.36
Oxygen (mg/L)
than 5
Fecal Coliform
200
400
1.00
1.00
4.21
15.24
180
(geometric
mean) (4/100
m L)
Total Residual
17
10.00
10.57
12.42
15.57
18.00
Chlorine (µg/L)
Temperature
5.30
14.51
17.20
20.42
28.90
(°C)
pH
6-9
6.50
7.33
7.66
7.92
8.90
Based on the summary of the DMRs you can see that the WWTP currently permitted for an average daily
discharge of 6,000 GPD reliably meets the limits set forth in the current NPDES permit. While there are
some exceedances, both minimum and maximum of the permit limits, these events occurred only once
and were rectified on the following day.
A summary of the processes and equipment based on the general design criteria at a flow of 8,000 GPD
is provided in the Table 2 below. The WWTP is a package type extended aeration facility. It includes an
9 Dewberry

Mr. Bob Sledge
Berryhill Elementary School WWTP — NCO028711
July 7, 2011
Page 4 of 5
equalization basin, sludge holding basin, aeration basin, clarifier, post aeration basin, chlorine contact
chamber, dechlorination chamber, and blowers. A summary of the processes and equipment based on
the general design criteria at a flow of 8,000 GPD is provided in the Table 2 below. A detailed analysis of
each process in included in the feasibility study in Attachment A.
Table 3. WWTP Summary at Increased Flow of 8,000 GPD
Process
Approximate Capacity/Loading
Approximate Capacity/loading
Rate of Current WWTP
rate based on 8,000 GPD flow
Processes and Equipment
Equalization Basin
7,300 gallons
91%of average daily flow in
equalization basin
Sludge Holding Basin
3,300 gallons
41%of average daily flow in
sludge holding basin.
Aeration Basin
20-30 hours detention of
23 hours detention of average
average daily flow
daily flow
Clarifier
600-800 gallons/day per square
300 gallons/day per square foot
foot
Blowers
164 CFM
100 —110 CFM
Post Aeration Basin
Adequate air available
Adequate air available
Chlorine Contact Chamber
10,000 GPD tablet system
8,000 GPD
20-30 min. contact time
Limit forward flow to 20-30
gpm
Dechlorination Chamber
10,000 GPD tablet system
8,000 GPD
Based on this analysis, the current WWTP is designed to handle flows in excess of 6,000 GPD.
Additionally, the current WWTP may be able to handle flows of 8,000 GPD with minor modifications.
CMS plans to make the modifications mentioned below and will submit a request for an Authorization to
Construct (A to C) to the Construction Grants and Loads Section (CG&L) after the draft NPDES permit is
issued for a modified flow of 8,000 GPD if it is determine the WWTP can meet the limits set forth in the
draft permit. These modifications included the following:
1. Sandblast and repaint the exterior walls of the WWTP. Drain, inspect and determine if
coating the interior walls of the WWTP below normal water level is required.
2. Provide a monitoring manhole near the fence on the effluent outfall to Lake Wylie.
3. Replace the RAS pump with a "geyser" type pump to provide a more efficient and reliable
transfer of sludge to the sludge holding basin. This will in turn produce a lower average
total solids loading to the clarifier and improved clarifier performance.
V Dewberry

Mr. Bob Sledge
Berryhill Elementary School WWTP — NCO028711
July 7, 2011
Page 5 of 5
4. Provide an interval timer for the equalization pump with level float override. This will allow
the operator flexibility in operating the WWTP and will keep the plant on a more continuous
operating cycle for more desirable continuous "feeding" of active biomass.
5. Potentially increase the size of the aeration basin if required to meet the limits set forth in
the draft permit for an average daily flow of 8,000 GPD.
Enclosed for you review is the following:
• Permit review fee of $260.00— Dewberry & Davis, Inc. check #
• Three (3) copies of this letter with attachments
Based on our phone conversation on May 2, 2011, an Engineering Alternatives Analysis (EAA) and a
permit application are not required and have not been provided.
Should you have any questions or comments, please do not hesitate to call me at [phone] or
email me at mwest([e-mail].
Sincerely,
Dewberry & Davis, Inc.
Matthew B. West, P.E, LEED AP BD+C
Project Engineer
Enclosures
c: Tom O'Dell, CMS
Skip Notte, P.E., LEED AP BD+C, Dewberry
P:\50046144\Ad m\Co rres pond ence\ Letters\2011.07.07.d ocx
f Dewberry

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Charlotte, N.C. 28202
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UTILITY PLAN
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