NC0044962_Permit Issuance_19970114

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0044962
North Stokes High School
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Staff Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 14, 1997
This document is printed on reuse paper - ignore any
content on the reirerse side

Staff Review and Evaluation
NPDES Wastewater Permit
FACILITY INFORMATION
Facility Stokes Co. BOE- N. Stokes Jr./Sr. High
NPDES No. NC0044962
Design Flow (MGD) 0.0115
Facility Class I
STREAM CHARACTERISTICS
Stream Name UT Dan River
Stream Class C-Tr
Sub -basin 030201
Drainage Area (mi2) 0.7
S7Q10 (cfs) 0.06
W7Q10 (cfs) 0.27
30Q2 (cfs) 0.25
IWC (%) 23
Proposed Changes
Parameters Affected
Basis for change(s)
Class I monitoring
NH3, Temp.
per regulation 2B .0500
Limit for ammonia
from NOL to 3.6 mg/1 summer
ammonia/tox. calculation
Change in TRC limit
from 72 ug/1 to 28 ug/1
per current TRC policy
Compliance Schedule: None/one possibly needed if ammonia limit imposed.
Special Condition(s): None
Permits & Engineering Comments:
This is a permit renewal for a school septic tank/sand filter system with dechlorination. Current
calculations indicate that the permit should contain a summer ammonia limit of 3.6 mg/1 and monitor
only in the winter, or the permit should have a tox. test at 23%. Permit drafted with ammonia limit;
however, monitoring data suggest that facility cannot meet this limit. Facility will be sent a letter
with the draft permit giving them the choice. The TRC limit was changed to match current policy.
Monitoring data suggest that the revised TRC limit can be met. P&E recommends renewal with changes
noted above. Region: Please comment on an appropriate compliance schedule should the permittee
choose the ammonia limit.
Prepared by:
Ul/D(ti4-\ ') 0- / Z
Regional Office Evaluation and Recommendations:

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
January 14,19
(`
Mr.JIF-Mararrvi1le
.�.1 G,o\nS Stokes County Schools
P.O. Box 50
Danbury, North Carolina 27016
AITA
LDEHNF
97
tm ,
Subject: NPDES Permit Issuance
Permit No. NC0044962
North Stokes High School
Stokes County
Dear Mr. Maranville:
In accordance with the application for a discharge permit received on August 7, 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 Susan Robson at telephone number (919)
733-5083, extension 551.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Winston-Salem Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey & Toxicology 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. NC0044962
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,
Stokes County Board of Education
is hereby authorized to discharge wastewater from a facility located at
North Stokes Jr./Sr. High School
on NCSR 1499
southwest of Lawsonville
Stokes County
to receiving waters designated as an unnamed tributary to the Dan River in the Roanoke River
Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective February 1, 1997
This permit and authorization to discharge shall expire at midnight on January 31, 2002
Signed this day January 14, 1997
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0044962
SUPPLEMENT TO PERMIT COVER SHEET
Stokes County Board of Education
is hereby authorized to:
1. Continue to operate an existing wastewater treatment system consisting of a 19,800 gallon septic
tank, 86401on dosing chamber, 2178 square foot surface sand filter, - ,
et -type ae ' ' - and outfall line located at North Stokes JrJ Sr. High School, on
NCSR 1499, southwest of Lawsonville, Stokes County (See Part III of this Permit), and
Un toN . `coioke-kr .zeo
Can\o1V'2 LoiN\-v-t-k"--Tud
,� Ch\oclr o or rLi'o\ek
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to the Dan River which is classified Class C-Trout waters in the Roanoke
River Basin.

• •
!� =W(.1
`Y900 �' � i i it �.p
ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
SECONDARY HIGHWAY
HARD SURFACE
LIGHT -DUTY ROAD, HARD OR
IMPROVED SURFACE
UNIMPROVED ROAD = _ =
Latitude: 36°27'44" Longitude' 80°16149"
Map # B17NE Sub -basin 03-02-01
Stream Class
C-Trout
Discharge Class
Receiving Stream
03
UT to Dan River
Qw: 0 0115 MGf) Permit expires: 1/31/02
0
SCALE 1:24 000
0 1 MILE
7000 FEET
i�r:.r o:ova`m. J
1
,
0
[ 1
1 KILOMETER
CONTOUR INTERVAL 20 FEET
(
Stokes County Schools
North Stokes H.S.
NC0044962
Stokes County

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0044962
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
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Flow
0.0115 MGD
Weekly
Instantaneous
I or E
BOD, 5 day, 20°C
30.0 mg / 1
45.0 mg / 1
2 / Month
Grab
E
Total Suspended Residue
30.0 mg / I
45.0 mg / I
2 / Month
Grab
E
NH3 as N
2 / Month
Grab
E
pH2
2 / Month
Grab
E
Fecal Coliform (geometric mean)
200 / 100 ml
400 / 100 ml
2 / Month
Grab
E
Total Residual Chlorine
28 µg/I
2 / Week
Grab
E
Temperature
Daily
Grab
E
Chronic Toxicity3
Quarterly
Composite
E
Notes:
1 Sample locations: E - Effluent, I - Influent
2 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
3 Chronic Toxicity (Ceriodaphnia), P/F @ 23%; February, May, August, November; See Part I, A (2) of this Permit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Part I Permit No. NC0044962
A (2). CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised November 1995, or subsequent
versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant.
mortality is 23.0% (defined as treatment two in the procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establish compliance with the pennit condition. The tests will be
performed during the months of February, May, August, and November. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DWQ Form AT-1(original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
4401 Reedy Creek Road
Raleigh, North Carolina 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating
the facility name, permit number, pipe number, county, and the month/year of the report with the notation of
"No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences
Branch at the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement
will revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits:
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day
of the month following the month of the initial monitoring.
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Streamline Package
Technician Checklist
(-11-NO
Old Permit File Review
Instream Data Reviewl\imt,
Clean Map
Stream Classification Check
(include stream index no. and date)
Old WLA file
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100% DOMESTIC FACILITIES - REC'D 2/94
RENEWING WITHOUT MODIFICATION
BY MODELER
Permit # Facility Stream
FINAL LIST
Sub -basin County Region
Request
WLA?
MOD ENG Comments
FK
03/29/94
44962 NORTH STOKES JR/SR HIGH SCHOOL UT DAN RIVER
60461 CWS/ABINGTON SUBDIVISION BELEWS CREEK
60623 STONE HIGHWAY MHP UT BUFFALO CREEK
KEYS TO COMMENTS:
Oa. No policy given. Alternatives analysis should be required.
Ob. Facility must meet 5 & 1 (by date given in parenthesis).
0c. Alternatives analysis requested.
0d. Alternatives analysis submitted.
0e. Facility will connect to POTW.
1. Phased permit.
2. Documented instream water quality problems.
3. Facility is requesting modification.
4. WLA should be done per basinwide permitting schedule.
030201 STOKES WSRO
030201 FORSYTH WSRO
030203 ROCKINGHAM WSRO
Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
FK MW
FK JL
FK SR (High Chlorine levels)
NOTE: IF'X' UNDER "Request WLA?" COLUMN,
THE ENGINEER SHOULD REQUEST A WASTELOAD ALLOCATION.
ALSO, FOR A 'Oa' COMMENT, GIVE CURRENT ZERO -FLOW POLICY.
FOR A '0b' COMMENT, GIVE 5 & 1 LIMITS BY DATE IN PARENTHESIS.