NC0028711_Permit (Issuance)_19960805

NPDES DOCUWENT SCANNING COVER SHEET
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:
August 5, 1996
Thin document is printed on reuse paper. - ignore any
content on the rexerse side

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
olapeffY f
vi Mr. Jh Davee cA ,p
Charlotte -Mecklenburg Schools — 8e("th
II
3301 Stafford Drive
Charlotte, North Carolina 28208
VDear Mr. Daazes;
August 5,1996
FA
EDEI-1 N F=1
Subject: NPDES Permit Issuance
Permit No. NC0028711
Berryhill Elementary School WWTP
Mecklenburg County
In accordance with the application for a discharge permit received on March 5, 1996, the Division is
forwarding herewith the subject NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US
Environmental Protection Agency dated December 6,1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following
receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and
binding.
Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources, Coastal Area Management
Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Mack Wiggins at telephone number (919)
733-5083, extension 5421."
Sincerely,
Original Signed 1.1y
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc. Central Files
Mooresville Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

Permit No. NC0028711
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Charlotte -Mecklenburg Schools
is hereby authorized to discharge wastewater from a facility located at the
Berryhill Elementary School
on Walkers Ferry Road
west of Dixie
Mecklenburg County
to receiving waters designated as 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.
The permit shall become effective September 1, 1996
This permit and the authorization to discharge shall expire at midnight on August 31, 2001
Signed this day August 5, 1996
P05o i WutKe(S Veal .{Zoc&c
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Mangement Commission

Permit No. NC0028711
SUPPLEMENT TO PERMIT COVER SHEET
Charlotte -Mecklenburg Schools
is hereby authorized to:
1. Continue to operate an existing 6000 gpd extended aeration wastewater treatment facility
consisting of a bar screen, flow equalization basin, aeration basin, dual secondary clarifiers,
sludge return, sludge holding tank and disinfection unit located at Berryhill Elementary School,
on Walkers Ferry Road, west of Dixie, Mecklenburg County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into Lake
Wylie which is classified Class WS-V&B waters in the Catawba River Basin.

`4 ,Discharge Point
ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
SECONDARY HGHWAY
HARD SURFACE
UUHT-DUTY ROAD HARD OR
IMPROVED SURFACE
UNIMPROVED ROAD = =
Lat: 35°12'41"
Map # G15NW
Stream Class WS-V&B
Long: 80°59'56"
Sub -basin 03-08-34
Discharge Class
100% DOMESTIC
Receiving Stream LAKE WYLIE
Permit exp. 08/31/2001
0
SCALE 1:24 000
0
1 MILE
•
7000 FEET
1
Exam *NMI"
•
0
1 KILOMETER
CONTOUR INTERVAL 2 METERS
'HARLOTTE-MECKLENBURG
BERRYHILL ELEM. SCHOOL
NC0028711
MECKLENBURG County

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NC0028711 '
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the pennittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Measurement Sample 'Sample
Monthly Avg. Weekly Avg, Daily Max Frequency Tyke Location
Flow 0.006 MGD Weekly Instantaneous I or E
BOD, 5 day, 20°C 17.0 mg/I 25.5 mg/I Weekly Grab E
Total Suspended Residue 30.0 mg/1 45.0 mg/1 Weekly Grab E
NH3 as N 9.0 m g/1 Weekly Grab E
Dissolved Oxygen** Weekly Grab E, U, D
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 /100 ml Weekly Grab E,U,D
Total Residual Chlorine 2/Week Grab E
Temperature Daily Grab E
Temperature Weekly Grab U, D
Conductivity Weekly Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream 100 feet above the discharge point, D - Downstream 200 feet below the discharge
point.
** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/I.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31) Permit No. NC0028711
During the period beginning on the effective date of the permit and lasting until expiration, the Pcrmittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Measurement Sample *Sample
Monthly Avg. Weekly Avg. Daily Max Frequency Iva Location
Flow 0.006 MGD Weekly Instantaneous I or E
BOD, 5 day, 20°C 17.0 mg/I 25.5 mg/I Weekly Grab E
Total Suspended Residue 30.0 m g/ I 45.0 m g/ I Weekly Grab E
NH3 as N 2.0 mg/I Weekly Grab E
Dissolved Oxygen** Weekly Grab E, U, D
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 /100 ml Weekly Grab E, U, D
Total Residual Chlorine 2/Week Grab E
Temperature Weekly Grab U,D
Conductivity Weekly Grab E,U,D
Temperature Daily Grab E
* Sample locations: E - Effluent, I - Influent, U - Upstream 100 feet above the discharge point, D - Downstream 200 feet below the discharge
point.
** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/l.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitorcd weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LMTATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0028711
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics plscharge Limitations
Monthly Avg,
Flow 0.006 MGD
BOD, 5 day, 20°C 17.0 m g / I
Total Suspended Residue 30.0 mg/I
NH3asN 9.0 mg/1
Dissolved Oxygen**
Fecal Coliform (geometric mean) 200.0 /100 ml
Total Residual Chlorine
Temperature
Conductivity
Weekly Avg, Daily Max
Monitoring Reg
Measurement
frequency
Weekly
25.5 mg/I 2/Month LA, tt1Yd''
45.0 mg/1 2/Mont-i (1. t. 0->
12.0 mgfr 3/34-on-tir—i--)44LL,1)_.
Weekly
400.0 /100 ml
Weekly
Weekly
4y
ulrements
Sample
Tvpe
Instantaneous
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
6 rC
Sample
Location
1 or E
E
E
E
E, U, D
E, U, D
E
U, D
g U, D
the dischar e
* Sample locations: E - Effluent, I - Influent, U - Upstream 100 feet above the discharge point, D - Downstream 200 feet below g
point.
** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/l.c
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 2tmonthrt the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

61—a /e.//2
Part III Permit No. NC0028711
D. Dispo� Alternatives
The Permittee shall cbn-t.�ually evaluate all wastewater disposal alternatives and pursue the most
environmentally sound alte ve of the reasonably cost effective alternatives. If the facility is in
substantial non-compliance with terms and conditions of the NPDES permit or governing rules;
regulations, or laws, the permittee shal11submit a report in such form and detail as required by the
Division evaluating these alternatives and a plan of action within sixty (60) days of notification by
the Division. �`

Permit Summary
NC0028711
This is a permit renewal for an existing class II facility. Compliance was
achieved for the :most part with parameters within the past twelve months.
Chlorine levels within the past twelve months may be of some concern. Had a
maximum level of 1466.000 ug/1 and an average of 272.214 ug/1. The region
needs to comment on the need for a residual chlorine limit and/or dechlorination
requirement for this renewal. Downstream values for DO looked good. DO
values were in the range of 5 to 6 during the latter months of the summer, but
never below 5.0 mg/1. Permits and Engineering recommend that this permit be
reissued with existing limits with monitoring updated to reflect a class two
facility.

�19
Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Facility Charlotte -Mecklenburg Schools, Berryhill Elementary School
NPDES No.
Design Flow (MGD)
Facility Class
NC0028711
0.006 MGD
II
STREAM CHARACTERISTICS
Stream Name
Stream Class
Sub -basin
Drainage Area (mi2)
S7Q10 (cfs)
W7Q10 (cfs)
30Q2 (cfs)
IWC (%)
Lake Wylie
WS-V & B
030834
2.07
0
0.15
0.15
100 (Summer NH3-N)
5.84(Winter NH3-N)
Proposed Changes
Parameters Affected
Basis for change(s)
2/month to weekly
BOD5, Ammonia, TSS, Fecal,
Total Residual Chlorine, Temp,
pH
per regulation 2H 0.0200
Compliance Schedule: None
Special Condition(s): None
Permits & Engineering Comments:
This is a permit renewal for an existing class II facility. Compliance was achieved for the most part
with parameters within the past twelve months. Chlorine levels within the past twelve months may
be of some concern. Had a maximum level of 1466.000 ug/1 and an average of 272.214 ug/1. This facility
needs to chose between ft NH3-N limits or Quarterly Tox limit @ 90% (Summer ammonia of 2.0 and
Winter ammonia of 9.0). They may be able to achieve summer limit of 2.0 mg/1. Need regional comment
on ammonia limits vs quarterly tox testing. Downstream values for DO looked good. DO values were in
the range of 5.0 mg/1 to 6.0 mg/1 during the latter months of the summer, but never below 5.0 mg/1.
Permits and Engineering recommend that this permit be reissued with existing limits with monitoring
updated to reflect a class two facility.
Prepared by:
Regional Office Evaluation and Recommendations:
i�a �4J�/t'fLA.L grC
c/c

NC0028711
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVE
IWC (%)
Allowable Concentration
Fecal Limit
Ratio of 0.0 :1
0
0.006
0.0093
17.0
0
100.00
17.00
Ammonia as NH3
(summer)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
0
0.006
0.0093
STREAM STD (MG/L) 1.0
UPS BACKGROUND LEVI 0.22
IWC (%) 100.00
Allowable Concentration 1.00
Ammonia as NH3
(winter)
7Q10 (CFS) 0.15
200/100ml DESIGN FLOW (MGD) 0.006
DESIGN FLOW (CFS) 0.0093
STREAM STD (MG/L) 1.8
UPS BACKGROUND LEVI 0.22
IWC (%) 5.84
Allowable Concentration 27.28

D'
Ob.
MCIACia.
M C6LILLAk
SOC PRIORITY PROJECT: Yes No X
To: Permits and Engineering Unit
Water Quality Section
Attention: Mack Wiggins
Date: March 22, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: Mecklenburg
Permit No. NC0028711
MRO No. 96-068
PART I - GENERAL INFORMATION
1. Facility and Address: Berryhill Elementary School
Charlotte -Mecklenburg Schools
3301 Stafford Drive
Charlotte, North Carolina 28208
2. Date of Investigation: 03-21-96
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: Francis R. Hale, ORC,
[phone]
5. Directions to Site: From the junction of SR 1191 (Old Dowd
Road) and Walkers Ferry Road (SR 1193/1184) in west
Mecklenburg County just outside the Charlotte City limits,
travel southwest on Walkers Ferry Road approximately 2.0 miles
to the site of the treatment facility, which is located on the
left (east) side of the road and on the south side of the
school grounds.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 12' 41" Longitude: 80° 59' 56"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: G 15 NW USGS Quad Name: West Charlotte
7. Site size and expansion are consistent with application?
Yes.
8. Topography (relationship to flood plain included): Sloping
toward Lake Wylie at the rate of 6-13%. The facility is not
in a flood plain.

9. Location of nearest dwelling: Approximately 200 feet of the
facility.
10. Receiving stream or affected surface waters: Lake Wylie
a. Classification: WS-V&B
b. River Basin and Subbasin No.: 03-08-34
c. Describe receiving stream features and pertinent
downstream uses: The receiving water is an unnamed cove
of Lake Wylie. There are many upstream and downstream
users.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.006 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? 0.006 MGD
c. Actual treatment capacity of the current facility
(current design capacity)? 0.006 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: I4one.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
facility, a 6,000 gpd extended aeration package plant,
consists of a bar screen, a flow equalization basin
(diffused air), an aeration basin (diffused air), dual
secondary clarifiers (one converted to post aeration
unit) with sludge return, sludge holding tank (aerated),
and disinfection unit (chlorine tablet).
f. Please provide a description of proposed wastewater
treatment facilities: N/A.
g Possible toxic impacts to surface waters: Chlorine is
added to the waste stream.
h. Pretreatment Program (POTWs only): N/A.
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.: N/A.
NPDES Permit Staff Report
Version 10/92
Page 2

Residuals Contractor: N/A.
Telephone No.: N/A.
b. Residuals Stabilization: PSRP: N/A.
RFRP: N/A.
Other: N/A.
c. Landfill: N/A.
d. Other disposal/utilization scheme (specify): Sludge is
periodically removed and transported by the Maintenance
Department of Charlotte -Mecklenburg Schools to CMUD sewer
system for final disposal.
3. Treatment plant classification (attach completed rating
sheet): Class II, rating sheet attached.
4. SIC Code(s): 8211
Wastewater Code(s).:
Primary: 03 Secondary:
Main Treatment Unit Code: 05007
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals. only)?
N/A.
2. Special monitoring or limitations (including toxicity)
requests: None.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray Irrigation: N/A.
Connection to Regional Sewer System: N/A.
Subsurface: N/A.
Other Disposal Options: N/A.
5. Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
NPDES Permit Staff Report
Version 10/92
Page 3

quality or groundwater? There are no known groundwater, air
quality, and/or hazardous materials concerns.
6. Other Special Items: None.
PART IV - EVALUATION AND RECOMMENDATIONS
It is recommended that the subject Permit be renewed as
requested.
Signature of Report Preparer
7-) /2-t,
Water Quality Re onal Supervisor
Date
'a/2 z/9
eit‘Z-•x
NPDES Permit Staff Report
Version 10/92
Page 4