HISTORICAL BEFORE 2000

NPDBS DOCUMENT SCANNINK COVER SHEET
NPDES Permit: NCO021504
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History Date Range:
Long-term BOD analysis
Document Date: June 21, 1999
THIS DOCYNENT IS PRINTED ON REUSE PAPER - 16NORE ANY CONTENT ON THE
REVERSE SIDE

State of North Carolina
Department of Environment •
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor NCDENR ,
Wayne McDevitt, Secretary NORTH CAROLINA DEPARTMENT OF
Kerr T. Stevens, Director - ENVIRONMENT AND NATURAL RESOURCES
June 21, 1999
Mayor James Blake
Town of Biscoe
Post Office Box 26
Biscoe, North Carolina 27209
Subject: NPDES Permit Issuance
Permit NCO02IL504
Biscoe WWTP
Montgomery County
Dear Mayor Blake:
In accordance with the application for a discharge permit received on October 2,
1998, 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 U.S.
Environmental Protection Agency dated December 6, 1983, and as subsequently
amended.
Please note the following changes from the previous permit (as indicated in the draft)
have been finalized:
• Instream W, D) Monitoring for Fecal Coliform is no longer required.
• Monitoring frequencies for pH, BOD5, TSS, Ammonia, and Fecal Coliform
have changed from 2/Month to Weekly (per most recently updated 2B .0500s for
Class II facilities).
• Effluent Temperature monitoring has changed from Weekly to Daily (per most
recently updated 213 .0500s for Class II facilities).
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 276 1 1-7447. Unless such demand is
made, this decision shall be final and binding.
Please take note that this permit is not transferable. Contact Division personnel if
there is any change in ownership or control of this discharge.
1617 Mail Service Center,Raleigh,NC 27699-1617 Telephone[phone] / FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/10%post-consumer paper

This permit does not affect the legal requirements to obtain other permits which may
be required by the Division of Land Resources or any other Federal or Local
governmental permit that may be required.
If you have any questions or comments concerning this permit, please contact Charles
Weaver at [phone], extension 511.
Sincerely,
Devidl A. C,(in 1rlrti
Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office/Water Quality Section
Aquatic Toxicology Unit
NPDES Unit
Mr. Roosevelt Childress, EPA
Point Source Compliance Enforcement Unit

Permit No.NCO021504
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1,
other lawful standards and regulations promulgated and adopted by the North Carolina
Environmental Management Commission, and the Federal Water Pollution Control Act, as
amended,
Town of Biscoe
is hereby authorized to discharge wastewater from a facility located at
Biscoe Wastewater Treatment Plant (WWTP)
NCSR 1556
west of Biscoe
Montgomery County
to receiving waters designated as Hickory Branch in the Yadkin-Pee Dee River Basin
in accordance with effluent limitations,monitoring requirements, and other conditions set forth in
Parts I,II, III, and IV hereof.
This permit shall become effective August 1, 1999.
This permit and authorization to discharge shall expire at midnight on June 30,2004.
Signed this day June 21, 1999.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No.NC0021504
SUPPLEMENT TO PERMIT COVER SHEET
Town of Biscoe
is hereby authorized to:
1. Continue to operate an existing 0.600 MGD extended aeration facility consisting of bV'"
�, eration basins, final clarifier; sludge disgester, sludge drying beds, and post
chlorination, located at Town of Biscoe Wastewater Treatment Plant(WWTP),NCSR
1556,west of Biscoe, Montgomery County,.and
2. Discharge from said treatment works at the location specified on the attached map
into Hickory Branch, which is classified as C waters in the Yadkin-Pee Dee River
Basin.

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SCALE 1:24000 Facility
- '
Latitude: 35 02 Location0'45"
Longitude: 79147'47'
Quad #: F19SE, "Biscoe" Town of Biscoe WWTP
Stream Class: C NC0021504
Receiving Stream: Hickory Branch North
Mont ome Coun

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS IF-jN Permit No. NC0021504
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge
domestic wastewater from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location*
Flow 0.600 MGD Continuous Recording I or E
BOD, 5 day, 200C 1 29.0 mg/1 43.5 mg/1 Weekly Composite E, I
Total Suspended Solidsl 30.0 mg/1 45.0 mg/1 )Weekly Composite E, I
NH3 as N 6.0 mg/1 >- Weekly Composite E
H2 � Weekly Grab E
Dissolved Oxygen3 =- Weekly Grab E, U, D
Fecal Coliform (geometric mean 200 100 ml 400 100 ml Weekly Grab E
Conductivity 3/,J WeeklyGrab U, D
Total Nitrogen (NO2 + NO3 + N) Quarterly Composite E
Total Phosphorus Quarterly Composite E
Total Residual Chlorine ) i 7 2/Week Grab E
Temperature °C Weekl Grab U D
Temperature °C ' Daily Grab E
Chronic Toxicit —P F4 Quarterly Composite E
Notes:
* Sample locations: E - Effluent, I - Influent, U - Upstream 100 feet above the discharge point, D - Downstream at NCSR 1556 on White
Oak Creek
I The monthly average effluent BODS and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85%
removal).
2 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
3 The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
4 Chronic Toxicity (Ceriodaphnia) P/F at 90%: January, April, July, and October; see Supplement to Effluent Limitations and Monitoring
Requirements, Special Condition A (2).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NCO021504
SUPPLEMENT TO EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A. (2). CHRONIC TOXICITY PASSMAIL 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 90% (defined as treatment two in the procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establish compliance with the permit condition. The tests
will be performed during the months of January, April, July, and October. 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.

Certificate of Publication.
� SVTIRTO�IMFEN1�TI,MCA�AIFOUNEAN'is pO0A ' MIQE
FFICE Q,QX?�3,�.��f���,�`Y �
x •RALEIGti,'�IORfi.N CA�IOIINA 278281 Montgomery County, North Carolina:
H,
:.! {NOTIFICATION OF-INTE. rTOISSU€rt`
1, iiir%„_,%A STATE•NPDES"PERMIT'i�',•(t:!;; -
a oaths basis of 2 orfChi'steff review and Tammy McQueen Dunn Editor of the Montgomery a newspaper in
application of Article 21 of Chapter.143,General�. }/ , g }� Herald,
Statutes'{f.North'Cetolla;.PublLaw 92soo;: Montgomery County State of North Carolina being duly sworn deposes and
yy'anra:athe lawful sitandar sand; ulallons;7tlie , , ,
'iNorth.'Caroline�Environmentai.,jfulanAgemegf"'
Co taiisslon'propases,to Issue 4.,permlt,to'•ola says that the annexed Advertisement or Notice in the action entitled
charge toth�e persona lleted below effectiveJune
21 r1999;and subject to special pondltions.�iPA. Notification 'of Intent to Issue a State N P D E S P e r m i t
•,1!Persons wishing to commeht upon or obJi4 i
i to`the proposed determinations•are Invited,to„ E n v i r o n m e n t a l Management Commission
�aubmlt same in writing to the"above address no-f
laief than June 7,1999.All comments� received,-priof to that date will tie consideredirl the formu-1,
�lallbh(of final determinations regarding ti e Pro-• was duly published in the Montgomery Herald once a week for t weeks
posed permit•A public meeting may be held' beginning[where the'Director of the•Derision of Environ be g� g on MAY 5 1 9 9 9 and ending
, , g
mental Managementfindsaslgniacantdegreeof
Public interest!14 a proposed permit.;,i, ltgfrI. on
L;dAlcopyof the draft pednit1Is avalable by.
40ng or calling the Division of Environmental
�Oat6I1na.27626-0535,,(919)-
ent PO Box`29535 Raleigtl; No
a33-7b15.•,,^°t1:�F.t_j
KTheappllcation and other inform Charles A. Womack Jr. Publisher
ation may lie
Inspected atthese locations during normal office',
hours:_,Copies of.the.information on ale'are
available upon request and paymentof the costs, , Editor, acting agent for publisher
of ieproductiori:,All such comments or requests;
re irding a proposed permit should make refer
ence to the NPDES permit number listed below.II'
:;jl Public notice of Infenf to Issue a State NPDES 1
permitto the ESNo.NCO0g:. O The Montgomery Herald
NPDESNo:NC0021504.TownofBlscoe;PO
RBox 28, Biscoe,�NC.27209 has applied for-a,,
4permit renewal for a ficility'located at the Bis6de
IwastewaterTreatment Plant,NCSR 1558,ivesL
ldisch icoe'discharges
In"Mon GDoftr ateddo n6stlofacilloI
W., Sworn to before me this the 1 1 t h day of MAY
dlscharges0.sooMGDoftreateddomesdcwaste-, y 1999
water from,one outfall'Into Hickory Branch, a
Class C stream•in the Yadkin-Pee Dee River
`Basin[which as a 7010 flow of 0 cis and a 3002,
iflow6f.0 cfshDissolved,oxygen ammonia,and; I Notary Public
IBOD5*are water quality limited.,For some'pa-
Srpmeters,`:tha available load capacity of the irn=
mediate recelvirig water will be consumed'and.
iyMy•affect future-,water quality based effluent • My commission expires January 21, 2000.
limitations'for'additional'dischargers within this
i portion of the watershed
o,&This the 28th day of April;,1999�
David A.Goodrich
1 . ,flr; ;,e �. r.For KiriT.Stevens;Director
II ,�Division of.Environmental Management,
f May5,itc;. i•,, {:: , .:
;J;4,,, .i 4
�'.ii'

The Knight Publishing Co. , Inc.
Charlotte, NC
North Carolina } as Affidavit of Publication
Mecklenburg County}
THE CHARLOTTE OBSERVER
--------------------------------------------------+---------------------------
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DIVISION OF WATER QUAL LTY/NCDENR RALEIGH,NORTH CAeaINAA2276s 535
PO BOX 29535 NOTIFICATION OF INTENT TO ISSUE A STATE NPOES PERMIT
On ma basis of thorough staff review and alsPamtion d Article 21 of Chapter
143,General Statutes of NCAh Cantata.Pudic law 92-500 and abler bi ul
RAL E I G H N C 27626 standards and regulatia er the Norm paaina Enwmnmou'd Management
Comae p s to issue a permit toat Ulsere g to the persons listed
hem x eflxtive B 2t N9 and sub,",tt silecial Cpdiotrrs.
Pwaans waning to comment upon or Object to the prnptsed determinations
are invdee to submit same in writing to the above address no Wter roan
i9199.All cemmerns rebaved prior,o mM data WYI beconsidered m the fen
mutation of boat datermmati ns r"andug"Proposed!Permit A public
meeting me,be he,M We me Charter of me Oh4svm of Environmental
Management finds a sgndiewt degree of Pu1a4c interest m A proposed
Pear s,
Aropyathe draft PermitM avbede bywdbrg on ufeoneem.ofEnvi-
REFERENCE: 30010433 ronmental Managioned,PO Box 29535.Fbiangh Awth Carolina 27626
U53S,(919)M3 7015.
3178312 np d e s #n c 0 0 2 15 0 4 Th.aPblioamn and other anormaban may inspected W mesa itoaoot5
during normal office hours.Copes of the information on me are avalable
upon requeN and payment a Me costs a reProduaion.All such rommems
or
Before the undersigned, a Notary Public Of said eepp ear regarding a proposed permit sheud make referencemthe
NPCEB permit nrxdin listed b&aw.
pale412&S9
County and State, duly authorized to administer DIRECTOR
oaths affirmations, etc . , personally appeared, Ohsion of Etanummord3l Management
Pudic notice ol intent of issue a State NPOES perms to me foibwing.
being duly sworn or affirmed according to law, ,.NPOES No W0021 Sd4.Town a Soon,PO.Box 26.Srscoe.NC 29209
has applied kr a permit renewal for a toothy located at the Bscce Waarwa
doth depose and say that he/she is a tarTn�tmeml�lam NCBR,sse. ,iiofBobeeInMontgomeryCounty he
facAay discharges O fi00 MGD Of treated domestic wastewater from ere not.
representative of the Knight Publishing Company a teB into Mcxary Brae,nh.aClae:Cweamin the yadaw-Pee Des R,.erBaem
we i
xa has a)010 now of 0 ds and a 3002 Bow a o CIa.Cxssdved oxygen.
corporation organized and doing business under the ammonia and B0135we water auamytinned.For same aarameler,,the
in anabm mad caaw4y o1 ire immepate to rem,water win be consumed
laws of the State of Delaware, and publishing a efadmay eBenUrn.e „wm,.iybaatBdeffluent"iitationsI.adub,,ha'
gem wi ha
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
familiar 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: 05/05
AD SPACE: 90 LINE
FILED ON: 05/10/99
------- --- -------------------------------------+------T--------------------
NAME: Q, r\ TITLE: _ rr
DATE:
In Testimony Whereof I have hereunto set my hand and affixed my seal , the
day and r aforesai .
Notary: r 7.����� � _�L,l_ __ My Commission Expires:

S
Staff Review and Evaluation
NPDES Wastewater Permit (NC0021504) Fact Sheet
.et
t ¢x E ' Facility Information
FacilityyName � .s. Town of Biscoe
NPDES No NCO021504
Permitted Flow=(MGD)' 0.600 ,County" - art, Montgomery
gFacihty"Cla �. II Regional ss Office Fayetteville
�Facility/1'ermrt Status Renewal F19SE, "Biscoe"
x _
Receiving Stream . Hickory Branch
3(13(d)Status r � ,xg Not Listed
Stream Classification C Winter 7Q10(cfs) ,` 0
Sibbasm x 03-07-15 30.Q2'(cfs) FF r
w. � .Tu. ., .. u 0
Drauiage Area'(mi ) a? w z 0.55 Average Flow`(cfs) 0.6
Summer 7Q10:(cfs) 0 IWC(%) a= zzt µ 100
Proposed changes:
Location Proposed.Changes ,„_% Sasis for,changes "
.,
Effluent Limitations and Removed U,D monitoring Division policy for dischargers if
Monitoring Requirements requirement for fecal coliform. stream not impaired(2/8/99 Staff
Meeting discussion). No trend in
instream fecal data noted.
Effluent Limitations and Changed monitoring frequencies Per most recent version of T15A:
Monitoring Requirements for pH, BOD5, TSS;Ammonia, NCAC 2B .0500s for Class II.
and Fecal Coliform from
2/Month to Weekly.
Effluent Limitations and Monitoring frequency for Per most recent version of T15A:
Monitoring Requirements Temperature(E)changed from NCAC 2B .0500s for Class II.
Weekly to Daily.
Compliance Schedule: N/A.
Special Condition(s): N/A.
Compliance History
• 2 NOVs for toxicity violations and 1 NOV for fecal violation in 1998. 1 NOV for fecal in 1999.
• Facility has passed most toxicity tests since 1996. Two failures have been reported in 1998: 4/98
(35.4%) and 10/98 (67.1%)—which was re-tested and passed.
• Discharge 0.1-0.35 MGD. Temps and pH fine. TRC high for this stream, usu. 0.3 mg/l. DOs
periodically fall <6, but not by much (several 5.8/5.9 measurements in '97 & '98 recorded but not
noted non-compliant). BOD5 normally <10 and ammonia usu. <4 mg/1, (levels seasonal)—some
levels in summer tend to be higher.
• Instream Data: Very distinct increase in conductivity downstream. A noticeable decrease in DO
(though none fell below 5 mg/1 DO standard). No trend in fecal.
1
04/20/99

r
Staff Review and Evaluation
NPDES Wastewater Permit (NC0021504)'Fact Sheet
Additional Comments
• Maintained conductivity monitoring since there was a very distinct trend in U,D data. This is
indicative of inorganic pollution, which is unusual for 100% domestic waste. Differences
between up- and downstream are often several hundred ,wnhos/cm (see DMR attachments).
Comments from Region? Downstream measurements are taken at White Oak Creek.
• TRC levels are rather high-300-500 µg/1, as compared to the "allowable" concentration of 17 µg/1
(Action Level only in non-Trout waters).
• No instream DO problems were observed in the data collected, so BOD5 limit will remain 29 mg/1.
Division policy is not to alter BOD5 limits for existing facilities that discharge to zero flow streams,
unless there are documented DO problems. Permit renewal is therefore consistent with the current
zero flow policy(as recommended by the Basinwide Plan).
• Since facility chose to have a chronic toxicity-limit instead of ammonia limits based on toxicity
(would otherwise be 2/4 mg/1 S/W),ammonia limit of 6 mg/1 determined by WLA will remain in the
permit.
• This sub-basin (03-07-15) is mostly forested (large part of sub-basin in Uwharrie National Forest),
though lower portion of Little River drainage impacted by Biscoe and Troy. Water quality in general
is good,with no major problems. No impaired waters,but some support-threatened.
• Biscoe discharges to Hickory Branch (not rated) and'did not report any DO violations from `94-`96.
No ambient stations on Hickory Br. Plan recommends renewing Biscoe with limits that reflect zero-
flow policy.
Proposed Schedule:
Draft Permit to Public Notice: 4/21/99 .
Permit Scheduled to Issue: 6/7/99
State Contact
If you have any questions on any of the above information or on the attached permit, please
contact Bethany Bolt at(919)733-5083, extension 551.
Copies of the following are attached to provide further information on the permit development:
• WET Test Results Summary
• DMR excerpts (11/98-2/99)
• Existing Permit
Si ature:
NPDES Recommendation by:
Regional Office Comments:
2
04/20/99

Staff Review and Evaluation
NPDES Wastewater Permit (NC0021504) Fact Sheet
Signature:
Regional Recommendation by: %Z / k
i
Reviewed By:
i na re: Date:
r,
Regional Supervisor.
Signature: Date
NPDES Unit:
3
04/20/99

DIVISION OF WATER QUALITY
May 19, 1999
MEMQRAND-VM
TO: Bethany Bolt
NPDES Permit Unit
FROM: Kitty Kramer K� c'l<'
Fayetteville Regionalflice
SUBJECT: Draft NPDES Permit
Town of Biscoe - NC0021504
Montgomery County
A review of the fact sheet for subject facility has been completed by the staff of the
Fayetteville Regional Office (FRO) and the following comments are offered:
I. It is the recommendation of FRO that STREAM monitoring for Fecal Coliform
be left in subject permit. It is know by the staff of FRO that this facility looses solids
when there is a heavy rain fall event and continued monitoring should occur to verify
if there is any adverse impact to the stream.
2. It is the recommendation of FRO that this facility continue to monitoring for
chlorine daily. This was discussed with the Town and they have no objection.
Also, since the data shows that there residual is high and they have toxicity testing, it
will be beneficial for this Office to continue to receive this data.
3. It is the request of FRO that Conductivity monioring be included in the EFFUENT
as well as streams.
If you have any questions or require any additional information, please not hesitate to
contact me at [phone].
AKK/akk

NOTES FOR TOWN OF SISCOE WWTP
PERMIT RENEWAL (NC0021504)
Wastewater discharge from Town of Biscoe WWTP (Biscoe, Montgomery County) to
Hickory Branch in the Yadkin-Pee Dee River Basin.
15A NCAC 2B .0300 Index #: Hickory Branch classified as C (#13-25-22-3-1) in
9/1/74.
ATC Information:
• 10/12/92 ATC issued for in-plant piping to bypass polishing pond.
Basinwide Plan Information:
• This sub-basin (03-07-15) is mostly forested (large part of sub-basin in Uwharrie
National Forest), though lower portion of Little River drainage impacted by Biscoe
and Troy. Water quality in general is good, with no major problems. No
impaired waters, but some support-threatened.
• Biscoe discharges to Hickory Branch (not rated) and did not report any DO
violations from `94-96. No ambient stations on Hickory Br. Basinwide
recommends renewing Biscoe with limits that reflect zero-flow policy.
Correspondence:
• 12/23/93 letter corrected WET limit after one year to "CHRONIC TOXICITY
PASS/FAIL PERMIT LIMIT." (Facility continues to report percentages, however,
rather than P/F).
• 2 NOVs for toxicity violations and 1 NOV for fecal violation in 1998. 1 NOV for
fecal in 1999.
WLA Information:
• 10/29/91 WLA estimates 30Q2 to be positive (0.06 cfs), but a 7/24/97 Memo to
the file said Hickory Br.'s 7Q10 and 30Q2 are estimated to be zero.
• Facility chose toxicity testing over ammonia limit of 1/1.8 mg/l (old—would be
2/4 now). Facility instead has ammonia limit of 6 mg/l.all year (a carry-over of an
old limit, due to OZ consuming load) with WET req'mt.
DMR Review r97--99):
• Discharge 0.1-0.35 MGD. Temps and pH fine. TRC high for this stream, usu. 0.3
mg/l. DOs periodically fall <6, but not by much (several 5.8/5.9 measurements in
'97 & '98 recorded but not noted non-compliant). BOD5 normally <10 and
ammonia usu.. <4 mg/l, (levels seasonal)—some levels in summer tend to be
higher. 7
• Instream Data: Very distinct increase in conductivity downstream. A noticeable
decrease in DO (though none fell below 5 mg/l DO standard). No trend in fecal.
General Comments:
Per Steve Pellei's 12/7/98 Memo regarding nutrient monitoring in the Yadkin
basin, this facility should be given quarterly 7N and TP monitoring.
Expiration date to be assigned to this permit is June 30, 2004.

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DIVISION OF WATER QUALITY
February 25, 1999
MEMORANDUM
TO: Bethany Bolt, NPDES Permits
FROM: Belinda S. Henson, Environmental Chemist
Fayetteville Regional Office
THRU: Paul R
Water QuahKyRegional Supervisor
SUBJECT: Renewal of NPDES Permit No. NCO021504
Town of Biscoc
Montgomery County
Please find enclosed the staff report and recommendations of the Fayetteville Regional
Office concerning the renewal of subject NPDES Permit.
If you have any questions or require any further information, please advise.
BSH/bs
Enclosure

SOC PRIORITY PROJECT: YES NO X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Bethany Bolt
Date: February 25, 1999
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY: Montgomery
Permit No. NC 0021504
PART I - GENERAL INFORMATION
1. Facility and Address: Town of Biscoe
PO Box 25
Biscoe,NC 27209
2. Date of Investigation: November 10, 1998
3. Report Prepared by: Belinda S. Henson, Environmental Chemist, FRO
4. Persons Contacted and Telephone Number: Mr. J. David Asbill
Director of Public Works
Town of Biscoe
910-572-7652 or 572-4112
5. Directions to Site: From Highway 24 just west of Biscoe, turn south onto NCSR
1556. Travel approximately 1 mile to dirt road on left. The
treatment plant is located at the end of this road.
6. Discharge Point(s), List for all discharge points:
Latitude: 35' 20' 45" Longitude: 790 47' 47"
Attach a U.S.G.S. map extract and indicate facility site.
U.S.G.S. Quad No. U.S.G.S. Quad Name:
F - 19 SE Biscoe, NC
7. Size(land available for expansion and upgrading): Approximately 10 acres
8. Topography: (relationship to 100-year flood plain included): Gently rolling

PART I - GENERAL INFORMATION (continued)
9. Location of nearest dwelling: None within 1000 feet
10. Receiving stream or affected surface waters: Hickory Branch
a. Classification: "C"
b. River Basin and Subbasin No.: Yadkin 15 (03-07-15)
C. Describe receiving stream features and pertinent downstream uses: Fishing,
wading, and any other usage requiring waters of lower quality.
PART II - DESCRIPTION OF WASTES AND TREATMENT WORKS
1. Type of wastewat 100 %Domestic
Indu t al
a. Volume of Wastewater : .6 MGD (Design Capacity)
b. Types and quantities of industrial wastewater: N/A
C. Prevalent toxic constituents in wastewater: N/A,
d. Pretreatment Program(POTWs only): N/A
In development Approved
Should be required Not needed
2. Production rates (industrial discharges only) in pounds per day: N/A
a. Highest month in the past 12 months: lbs/day
b. Highest year in the past 5 years: lbs/day
3. Description of industrial process (for industries only) and applicable CFR Part and
Subpart: N/A
4. Type of treatment: This existing extended aeration facility consists of aeration basins,
final clarifier, sludge digester, sludge drying beds and chlorination facilities.
5. Sludge handling and disposal scheme: Digested sludge is dried on sludge drying
beds and disposed of in the County landfill.
6. Treatment plant classification: Less than 5 points; no rating (include rating sheet, if
appropriate). Grade II WWTP (no changes)

PART II - DESCRIPTION OF WASTES AND TREATMENT WORKS (continued)
5. SIC Code(s): 4952
Primary 01 Secondary
PART III - OTHER PERTINENT INFORMATION
I. Is this facility being constructed with Construction Grant Funds (municipals only)? N/A
2. Special monitoring requests: None
3. Additional effluent limits requests: N/A
4. Other: N/A
PART IV - EVALUATION AND RECOMMENDATIONS
It is the recommendation of this office that Permit No. NC0021504, be reissued in
keeping with basinwide strategy.
S nature f eport Preparer
Water Quality Regional Supervisor
Date

RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: Tb tA)n WlP I-i Sc-.o e. W I.JT P
Owner or Contact Person: "3. Onoint fq Sb& I I
Mailing Address: 90 GaX 2 5 - Pi liScoC A/C - 27a09- 0 Q a(O
County: MbyA -aev►n e'r y Telephohe:Lctib 572 -7(06:1 or 573- 411 Z
Present Classification: C.1QS8 �' New Facility Existing Facility �
NPDES Per. No. NC00 21..1;0 - Nondisc. Per. No.WQ Health Dept.Per No.
Rated by: &1tyo_a :5. gen5on Telephone: (3iQ442b-I6qI Dater 4 -99
Reviewed by: Health Dept. Telephone:
Regional Office Telephone: 0)
Central Office Telephone:
ORC: Z. OatnCk As1a:11 Grade: X�= Telephone:
Check Class ification(s): Subsurface Spray Irrigation Land Application
Wastewater Classification: (Circle One) I Q III IV Total Points:
------------------- -----------------------------------------
IN-PLANT PROCESSES AND RELATED CONTROL EQl IIPMENT NMICH ARE AN INTEGRAL PART OF INDUSTBLLAL PRODUCTION%iALL► OT RE
CONSIDERED WASTE TREATMENT FOR THE PURPOSE OFCLASSIFICATION.ALSOSEPTIC TANK SYSTEMS CONSISTING ONLYOF SEPTIC TANK
AND GRAVITY NITRIFICATION LINES ARE EXEMPT FROM CLASSIFICATION.
-------------------------------------------------------------
SUBSURFACE CLASSIFICATION SPRAY IRRIGATION CLASSIFICATION
(check all units that apply) (check all units that apply)
1. septic tanks 1. preliminary treatment (definition no. 32 )
2. pump tanks 2. lagoons.
3. siphon or pump-dosing systems 3. septic tanks
4. sand filters 4. pump tanks
5. grease trapinterceptor 5. pumps
6. oil/water separators 6. sand filters
7_ gravity subsurface treatment and disposal: 7. grease trapinterceptor
8. pressure subsurface treatment and disposal: 8. oil/water separators
9. disinfection
10. chemical addition for nutrient/algae control
11. spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater In excess of these components shall
be _rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUAL$CLASSIFICATION(Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
-------------------------------------------------------------
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification,unless the flow is of a significant quantity or the technology is unusually
complex,to require consideration by the Commission on a case-by-case basis: (Check N Appropriate)
1. Oil/water Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed-loop Recycle Systems;
5. Groundwater Remediation Systems consisting only of oil/water separators, pumps, air-stripping, carbon adsorption, disinfection
and dispos.-J;
6. Aquaculture operations with discharge to surface waters;
7. Water Plant sludge handling and back-wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified If permitted after July 1,
1993 or if upon inspection by the Division, it is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)
ITEM POINTS
(1) Industrial Pretreatment Units or Industrial Pretreatment Program(see definition No.33)...................................................4
(2) DESIGN FLOW OF PLANT IN gpd[not applicable to,non-contarpinated cooling waters,sludge handling facilities for
water purification plants,totally closed cycle s`ysiems(see definition No. 4)),and facilities consisting only of hem
(4)(d) or Items (4)(d) and (11)(d)] i; tJ
0 - 20.000..........................................................'.............................::........ 1
20,001-_.,60.000::.:..:.:.........v l 2.....................................2
.............:...........................:...........:::....:.:...........
50,001,- 100,00,9.................... ....
...........
...........
-1'00;001 r 250,000........................................ ........
250,001 - 500',000................................................................................................._
,......:......r.:.......:.. a.....
...5.
500.001 - 1,000,000.......6........................... -
1.000.001 - 2,000,000..............................................................:.
.........................................................1 0
2,000,001 (and up) rate 1 point additional for each 200,000 gpd capaclty'up to a maximum of .................30
Design Flow ,(gpd)-, i
J 3) PRELIM INARY•UNrrsiPROCESSES(see definition No.32) '` t `
(a) Bar Screens............................................................................................................................................tiY
or
(b) Mechanical Screens, Static Screens or Comminuting Devices.:::.:....: .::::::....::
(c) Grit Removal.................................................................................................:.........................................�
or
(d) Mechanical or Aerated Grit Removal............:......................................................:................
......:....................2
(e) Flow Measuring Device:. r.....................'........:......................1
or
(f) Instrumented Flow Measurement..........................................................................................:.....................2
(9) Preaeration.....................................................:................
........................................................................2
(h) Influent.Flow Equalization......................::.. 2
(i) Grease or Oil Separators - Gravity.................................................................................................6..............:2
Mechanical....................................... ......................................................................................................:..2
DissolvedAir Flotation................................................................................................................................a
(1) Prechlorinatlon..............................................................:..............:.......:....................................................5
(4) PRIMARY TREATMENT UNiTS/PROCESSES
(a) Septic Tank (see definition No. 43)............................................................................................................2
(b) Imhoff Tank.....................................................................................................:........................................5
(c) Primary Clari lers..........................................................................................................................................5
(d) Settling Ponds r Settling Tanks for Inorganic Non-toxic.Materials(sludge handling facilities for water
purification plants,sand,gravel,stone,and other mining operations except recreational activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARYTREATMENT LJNn PROCESSES
(a) Carbonaceous Stage
(i) -Aeration-High Purity Oxygen System...............................................................................20
DiffusedAir System.............................................................................................6.........1
Mechanical Air System (fixed, floating or rotor)................................................................
Separate Sludge Reiteration.............................................................................................3
(II) Trickling Filter
HighRate............................................:..........................................................................7
StandardRate...............................................................................................................5
PackedTower................................................................................................................5
(lil) Biological Aerated Filter or Aerated Biological Fiher........................................6...................t o
(iv) Aerated 'lagoons..........................................................................................................10
(v) Rotating,Biological Contadom..............................................................:.......................1 0
(VI) Sand Filters -intermittent biological..................................................................................2
Recirculating biological.....................................................................................................3
(vil) Stabilization Lagoons....................................................................................................
(viil) Clarifier........................................................................................................................
(Ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see definition No. 12)(Points for this hem have to be in addition to hems
(5)(a)(1) through (5)(a)(viil),
utilizing the extended aeration process(see definition No.3a) .........................................
utilizing other than the extended aeration process............................................................a
(x) Nutrient additions to enhance BOO removal.....................................................6................5
(XI) Biological Culture ('Super Bugs')addition........................................................................5
(b,). Nitrogenous Stage
(I) Aeration - High Purity Oxygen System...............................................................6.............20
DiffusedAir System.......................................................................................................10
Mechanical Air System (fixed, floating or rotor).................I...............................................8
SeparateSludge Reaeration..............................................................................................3
(II} Trickling Filter-High Rate...................................................................................................7
Standard Rate.."..
ate................................................................................................................5
PackedTower................................................................................................................5
(IiI) Biological Aerated Filter or Aerated Biological Filter.............................................................10
(Iv) Rotating Biological Contactors.................................................................................6....10
(v) Sand Filter-Intermittent biological...................................................................................2
Recirculatingbiological....................................................................................................3
(VI) Clarifier..........................................................................................................................5
(6) TERTIARY OR ADVANCED TREATMENT UNITWPR_DCESSES
(a) Activated Carbon Beds-
withoutcarbon regeneration...................................................................................................5
withcarbon regeneration..............................................................................6........................15
(b) Powdered or Granular Activated Carbon Feed-
withoutcarbon regeneration..................................................................................6..............5
withcarbon regeneration.....................................................................................................15
(c) Air stripping......................................................................................................................................6......5
(d) Denhrhicatlon Process..............................................................................................................................10
(a) Eiectrodlalysis.........................................................................................................................6...6..............5
(f) Foam Separation.......................................................................................................................................5
(9) Ion Exchange...........................................................................................:................................................5
(h) Land Application of Treated Effluent(see definition No.22b)(not applicable for sand,,gravel,stone
and other similar mining operations) by high rate Infiltration..........................................................................4
(1) Microscreens.............................................................................................................................................5
(]) Phosphorous Removal by Biological Processes(See definition No.26)..........................................6..............20
(k) Polishing Ponds - without aeration............................................................................................................2
withaeration.......................................................6..........................................................5

^ (0 Post aemmvn cascade mxuxouvrmovhanma�'-.------.---'''-----------------'--�
(n) no,ome �� �����������--'---
~~'~^~—'--'----------'---------------------_-----a
(n) oonu or Mixed-Media Fillers ' low rate..........................................................................................................x
highrate......................................................................o
(0) Treatment processes for removal mmetal or cyanide----------'-----.-----------_.15
m/ treatment processes for removal m toxic materials other,mmmom/ o,�anmo—_-------'--_'1»
(r) ouUoaernamMewr �
_ (o) Sludge Digestion Tank '�*mmou <onoo�o��----------_-------------------.10
Aerobic ------_.�_____�
Unheated -----------------------------ew
VacuumAssisted............................................... .......................
^_--------_-------']�
Non-aerated 2
(») RESIDUALS UrILIZATION/DISPOSAL(including Incinerated ash)
. Land-Application (surface and subsurface)-(see definition 22a) .
by contracting to a land application operator:�mm applicationpermit
—
~ ----'--.----------'---------------'-----�
(c) Dedicated Landfill(burial) by the ponnnmo of the °ostvmmo,treatment�vm�...............................................
(») DISINFECTION —
chmnmumm---------------_---___---__---___—^____--____—.
� oocmunommn'-------_--�—.�--_------'--�---'—_--------~�
a
<m> ��������----------------------
~~~ �����(3)(j).
List . . ����� �����������������������������
-----------------'------'_------_---'a
---''--'----'—'-----'----'----.—'--''_'_—''-----'o
womo��wsououwns�moceaa� ......-----------------'—
(a) Holding Ponds,Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts significantly greater than Is common
for domestic wastewater 4-
(b) Effluent Flow Equalization(not applicable to storage basins which are inherent In land application systems)......2
W Stage Discharge (not applicable to storage basins Inherent In land application systems)..................................5
� CLASSIFICATION
Class/.........................................................................................................s-2s
c�� u-----'--_---'—.--._----'--------._--uoao PointsPoints
— '
oIMSIII........................................................................................................e-65 Points-^ '
Classw....................................................................................................... Points
___ _______________________________ -________________
mcimwohavmnanating of one through four points.mmum,o uv not require u certified operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the removal of metal or cyanide will be assigned a Minimum classification of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class III.
_____________________________________________________________
uom4osFImITxmS �
The following

(15)Electrodialysis. Process for removing Ionized salts from water through the use of Ion-selective Ion-exchange membranes;
(16)Filter Press. A process operated mechanically for partially dewatering sludge;
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials through
the introduction of air in the form of fine bubbles;also called foam fractionation;
(18)Grit Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Imhoff Tank. A deep two story wastewater tank consisting of an upper sedimentation chamber and a lower sludge digestion chamber.
(20)Instrumented Flow Measurement. A device which Indicates and records rate o1 flow;
(21)Ion Exchange. A chemical process in which ions from two different molecules are exchanged;
(22) Land application:
Qa)Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land either by spraying on the surface or by subsurface injection
(i.e., chisel plow);[not applicable for types of sludge described in(11) of this Rule];
(b)Treated Effluent. The process of spraying treated wastewater onto a land area or other methods of application of wastewater onto a land area as a
means of final disposal or treatment;
(23)Microscreen. A low speed,continuously back-washed, rotating drum filter operating under gravity conditions as a polishing method for removing
suspended solids from effluent;
(24) Nitrification Process. The biochemical conversion of unoxidized nitrogen(ammonia and organic nitrogen)to oxidized nitrogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Biological. The removal of phosphorus from wastewater by an oxiclanoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Polishing Pond. A holding pond following secondary treatment with sufficient detention time to allow settling of finely suspended solids;
(28) Post Aeration. Aeration following conventional secondary treatment units to Increase effluent D.O.or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by a nonmechanical, gravity means,of flowing down a
series of steps or weirs; The flow occurring across the steps or weirs moves in a fairly thin layer and the operation of the cascade requires no operator
adjustment;thus,zero points are assigned even though this is an essential step to meeting the limits of the discharge penult;
(30) Powdered to Granular Activated Carbon Feed. A biophysical carbon process that utilizes biological activity and organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon is feed controlled into the system;
(31) Preaeration. A tank constructed to provide aeration prior to primary treatment;
(32) Preliminary Units. Unit operations in the treatment process.such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industrial Pretreatment.
(a) Pre-treatment Unit, Industrial. The conditioning of a waste at Its source before discharge,to remove or to neutralize substances Injurious to sewers and
treatment processes or to effect a partial reduction in load on the treatment process which is operated by the same governing body as the wastewater
treatment plant being rated;
b) Pre-treatment Program,Industrial-must be a State or EPA required program to receive points on the rating sheet;
(34) Primary Clarifiers. The first settling tanks through which wastewater is passed In a treatment works for the purpose of removing settleable and suspended
solids and BOD which is associated with the solids;
(35) Pumps. All influent, effluent and in-plant pumps;
(36) Radiation. Disinfection or sterilization process utilizing devices emitting ultraviolet or gamma rays;
(37)Reverse Osmosis. A treatment process In which a heavy contaminated liquid is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed biological growth process in which wastewater flows through tanks in which a series of partially submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration of effluent following septic tanks, lagoons,or some other treatment process in which further biodecompositlon is
expected to produce desired effluents;Hydraulic loading rates on these lifters are computed in gpd/ac and have a resulting low gpm/sf(less than one);
b) Recirculating biological-the same type of sand filter as defined in Subparagraph(39)(a)of this Rule with the added capability to recycle effluent back
through the sand filter;
(40)Sand or Mixed-Media Filters. A polishing process by which effluent limits are achieved through a further reduction of suspended solids;
(a),low rate--gravity,hydraulically loaded filter with loading rates in the one to three gprrVsf range;
(b)high rate--a pressure,hydraulically loaded filter with loading rates in the five gpm/sf range-At any rate,the loading rate will exceed three gprrysf;
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biological treatment units;
(42)Separate Sludge Reparation. A part of the contact stabilization process where the activated sludge is transferred to a tank and aerated before returning it
to the contact basin;
(43)Septic Tank. A single-story settling tank in which settled sludge is in contact with the wastewater flowing through the tank;shall not be applicable for
septic tank systems serving single family residences having capacity of 2,000 gallons or less which discharge to a nitrification field;
(44)Sludge Digestion. The process by which organic or volatile matter and sludge is gasified,liquefied,mineralized or converted into more stable organic matter
through the activity of living organisms, which Includes aerated holding tanks;
(45)Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge Is dried by drainage and
evaporation;
(46) Sludge Elutriation. A process of sludge conditioning.In which certain constituents are removed by successive washings with fresh water or plant effluent;
(47)Sludge Gas Utilization. The process of using sewage gas for the purpose of heating buildings,driving engines,etc.;
(48)Sludge Holding Tank(Aerated and Nonaerated). A tank utilized for small wastewater treatment plants not containing a digester in which sludge may be
kept fresh,and supernatant withdrawn prior to a drying method(i.e.sludge drying beds);This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nonaorated tank would simply be used to
decant sludge prior to dewatering and would not allow long periods (several days of detention) without resulting odor problems;
(49)Sludge Incinerators. A furnace designed to bum sludge and to remove all moisture and combustible materials and reduce the sludge to a sterile ash;
(50)Sludge Stabilization(Chemical or Thermal). A process to make treated sludge less odorous and putrescible,and to reduce the pathogenic organism
content;This may be done by pH adjustment,chlorine dosing, or by heat treatment;
(51)Sludge Thickener. A type of sedimentation tank In which the sludge Is permitted to settle and thicken through agitation and gravity;
(52)Stabilization Lagoon. A type of oxidation lagoon in which biological oxidation of organic matter Is effected by natural transfer of oxygen to the water from
air (not a polishing pond);
(53)Stand-By Power Supply. On site or portable electrical generating equipment;
(54)Static Screens. A stationary screen designed.to remove solids,including non•biodegradable particulate(ffoatable solids,suspended solids and SOD
reduction)from municipal and industrial wastewater treatment systems;
(55)Tertiary Treatment. A stage of treatment following secondary which is primarily for the purpose of effluent polishing;A settling lagoon or sand or coal filter
might be employed for this purpose;
(56)Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing in tubes to another fluid outside the tubes,or vice versa;
or other means of regulating liquid temperatures;
(57)Thermal Sludge Conditioner. A conditioning process by which heat Is added for a protracted period of time to Improve the dewaterabillty of sludge by the
solubilizing and hydraulizing of the smaller and more highly hydrated sludge particles;
(58)Toxic Materials. Those wastes or combinations of wastes,Including disease-causing agents which after discharge and upon exposure,ingestion,Inhalation
or assimilation into arty organism,either directly from the environment or indirectly by ingestion through food chains,will cause death,disease,behavioral
abnormalities,cancer,genetic mutations,physiological malfunctions(Including malfunctions In reproduction)or physical deformations,in such organisms or their
offspring;Toxic materials include,by way of Illustration and not limitation:lead,cadmium,chromium, mercury,vanadium,arsenic,zinc,ortho-nhro-chlorobenzene
(ONCB),polychlorinated biphenyls(PCBs)and dichlorodiphenyl trichloroethane(DDT);and any other materials that have or may hereafter be determined to have
toxic properties;
(59)Trickling Filter. A biological treatment unit consisting of a material such as broken stone or rock over which wastewater is distributed;A high rate trickling
filter is one which operated at between 10 and 30 mgd per acre. A low rate trickling filter Is one which is designed to operate at one to four mgd per acre;
(60)Trickling Filter(Packed Tower). A plug flow type of operation in which wastewater flows down through successive layers of media or filtrate material;Organic
material Is removed continually by the active biological fixed growth in each successive layer. This method may produce'secondary'quality effluent,or may be
adapted to produce a nitrified effluent;
(61)Vacuum Filter,Centrifuges,or Filter Presses. Devices which are designed to remove excess water from either digested or undigested sludge prior to disposal
or further treatment.

State of North Carolina
Department of Environment
and Natural Resources 4 r
Division of Water Quality �) 1
James B. Hunt, Jr., Governor NC DENR
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
November 2, 1998
James Blake
Town of Biscoe
P.O. Box 26
Biscoe , NC 27209
Subject: Modification of NPDES Permit NCO021504
Biscoe WWTP
Montgomery County
Dear Permittee:
The Division is beginning the second five-year cycle of river basin planning and permit renewals. An
examination of the basin planning schedule has revealed that the timing of permit renewals does not
allow an evenly distributed workload as first envisioned. This results in problems uith the efficiency
and effectiveness of the NPDES program. In an effort improve customer service, and after thorough
review of the water quality issues in your area, the Division is changing the permit renewal schedule for
all NPDES permits in your sub-basin. ..
This permit modification changes the expiration date of the subject permit to June 30, 1999. Please
find enclosed the revised permit cover page. Insert the new cover page into your permit and discard the
old page. All other terms and conditions contained in the original permit remain unchanged and in full
effect. This permit modification is issued pursuant to the requirements of North Carolina General
Statutes 143-215.1 and the Memorandum of Agreement between North Carolina and the U. S.
Environmental Protection Agency.
If you have already submitted a permit renewal application for the subject facility, the Division will
retain the application until your permit is due for renewal. No additional forms or fees will be required.
If any parts, measurement frequencies or sampling requirements contained in this permit modification
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 a written petition conforming to
Chapter 150B of the North Carolina General Statutes, 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.
If you have questions about this modification, please contact Charles Weaver of my staff at the
telephone number or address listed below.
Sincerely,
eaten Howard, r., P.E.
cc:Central Files ///f
Fayetteville Regional Office, Water Quality Section
Roosevelt Childress, EPA
NPDES Unit Files
Point Source Compliance Enforcement Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 919 733-5083, extension 511 (fax) 919 733-0719
An Equal Opportunity Affirmative Action Employer [e-mail]

T' Permit NC0021b04
:OF NORT_M CAROLINA _
.�
, r ;DEPAR,TMENTOF ENVIRONMENTt, NDFNATURAL-..RESOURCES-
:DIVISION-OFM TER',QUALITY
ERM,
z TO,DISCHARGE WASTEWATER'UNDER THE
V S 1
, - :...' •�:--f .:..-'.:: 5.,.,r.tr u,•..I ':: 4'r^C 1k,�„*.,wir}e..., .,.
.'-,NATIONAL POLL-UTANT DISCHARGE-ELIMINATI:`..ON SYSTEM
In compliance with the provision of North Carolina,General Statute 143-215.1, other lawful
standards and regulations i)romulgated,andeaa6pted by the.North Carolina Environmental
_.r
1VIanagement Commission, and the Federal WaterlPollution Control Act, as amended,•
Town of Biscoe
is.hereby.authorized to discharge treated wastewater-from-a facility.located at
Biscoe WWTP
Biscoe
.Montgomery County
to receiving waters designated as Hickory Branch in the Yadkin.Pee':Dee River basin:
-in.accordance with the effluent limitations, monitoring requirements, and other conditions set.forth
in Parts I,`II;III and:IVhereof. =
=.This permit shall become:effective-November-2, 1998.
the permit and-—iit orization to discharge shall expire on June 30, 1999
Signed this-;day-November 2, 1998. r t
..Preston Howard,, x: .P.R,.Director_
ivision of Environmental Management -
By Authority oft he'EnvironmentalMaaagement Commission

Notice of Intent
To Extend the Duration of NPDES Discharge Permits in the Yadkin River basin
SUBJECT:The Division of Water Quality plans to extend the duration of the current NPDES Permits
for the following facilities:
Permit Facility County
NCO028916 Troy WWTP Montgomery
NCO021504 Biscoe WWTP Montgomery
PURPOSE: The facilities listed above all discharge into the Yadkin River basin. Other permits in the
Yadkin River basin have expiration dates in calendar year 1999. The facilities listed above
have permit expiration dates in 1998. In order for the Division to evaluate all permit
renewal requests in the Yadkin River basin during the same calendar year, the Division
plans to extend the expiration dates of the permits for the facilities listed above.
No conditions in the existing permits will be changed or modified. This is an
administrative change to better align permitting and Basinwide Planning operations
within the Division of Water Quality.
On the basis of preliminary staff review of Article 21 of Chapter 143, General Statutes of
North Carolina (and other lawful standards and regulations), the North Carolina
Environmental Management Commission proposes to extend the duration of the NPDES
permits listed above, subject to specific pollutant limitations and special conditions.
INFORMATION: A copy of the existing NPDES permits and a sketch showing the location of each
discharge is available by writing or calling:
Mr. Charles Weaver
NC DENR- DWQ - NPDES Unit
P.O. Box 29535
Raleigh, North Carolina 27626-0535
Telephone number: [phone], ext. 511
The existing permits are on file at the Division of Water Quality, Archdale Building, 512 North
Salisbury Street (Room 925), Raleigh, North Carolina. They may be inspected during normal office
hours. Copies of the information on file are available upon request and payment of the costs of
reproduction.
Date
Preston Howard, Jr. .E., Director
Division of Water Quality
Page 1 of 1

r
WK
DICKSON
October 23, 1998
PhPermits and Engineering Unit
Division of Environmental Management
Post Office Box 27687
Raleigh, North Carolina 27611-7687
Re: N P D E S Permi; ado. NC 0021504 Rene,,,;a1
Biscoe, North Carolina
WKD #98775.10
Dear Sirs:
On behalf of the Town of Biscoe, we are forwarding three copies of the NPDES
Application for renewal of Permit No. NC 0021504. Also enclosed is the renewal
fee of $250.
The sludge management plan is to have sludge from drying beds removed by Town
of Biscoe and disposed of in the Montgomery County Sanitary Landfill
approximately 2 or 3 times a year.
If there are any questions or a need for additional information regarding this
application, please contact our office.
Sincerely,
W. K. DiCKSON & CO., HNC.
/ eak.
M. L. Wolfe
Enclosures
Cc: Mr. Jimmy Blake, Mayor
Mr David Asbill, Director of Public Utilities

State of North Carolina
Department of Environment ` •
KMAI
and Natural Resources �1
Division of Water Quality 1
James B. Hunt, Jr., Governor NC DENR
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
September 21, 1998
James Blake
Town of Biscoe
P.O. Box 26
Biscoe , NC 27209
Subject: Status of NPDES Permit NC0021504
Biscoe WWTP
Montgomery County
Dear Permittee:
After a thorough review of the Yadkin-Pee Dee River basin management plan and water quality issues relevant to
the subject facility, the Division of Water Quality has decided to extend the duration of the subject permit. The
expiration date of your permit will be changed in order to allow the Division to review all NPDES discharge
permits in the Yadkin River Basin during calendar year 1999.
All terms and conditions in the existing permit will apply until a new expiration date is assigned by the Division.
Extension of existing Effluent Limitations and Monitoring Requirements does not exempt the subject facility from
the new Enforcement Policy recently enacted by the Division.
Attached to this letter is a copy of the Public Notice that is being published to announce the planned extension of
your permit. After Public Notice has been made by the Division, the expiration date of your permit will be changed
via a permit modification. No draft permit will be sent out with the Public Notice, as none of the conditions in the
existing permit will be modified.
If you have already submitted your renewal application package, no additional fees or documentation will be
required as a result of this change to your permit's expiration date. If the Division has not yet received a renewal
application for the subject permit, you will find the necessary application form(s) attached to this letter.
The Division appreciates your patience and understanding to date regarding the rescheduling of the subject
permit. If you have questions about this proposed modification or about the permit renewal process, contact
Charles Weaver of my staff at the telephone number or address listed below.
Sincerely, loarf
Preston Jr., P.E.
cc: Central Files
Fayetteville Regional Office, Water Quality Section
NPDES File
P.O. Box 29535, Raleigh, North Carolina 27626-0535 919 733-5083, extension 511 (fax) 919 733-0719
An Equal Opportunity Affirmative Action Employer [e-mail]

Notice of Intent
To Extend the Duration of NPDES Discharge Permits in the Yadkin River basin
SUBJECT:The Division of Water Quality plans to extend the duration of the current NPDES Permits
for the following facilities:
Permit Facility County
NCO028916 Troy WWTP Montgomery
NCO021504 Biscoe WWTP Montgomery
PURPOSE: The facilities listed above all discharge into the Yadkin River basin. Other permits in the
Yadkin River basin have expiration dates in calendar year 1999. The facilities listed above
have permit expiration dates in 1998. In order for.the Division to evaluate all permit
renewal requests in the Yadldn River basin during the same calendar year, the Division
plans to extend the expiration dates of the permits for the facilities listed above.
No conditions in the existing permits will be changed or modified. This is an
administrative change to better align permitting and Basinwide Planning operations
within the Division of Water Quality.
On the basis of preliminary staff review of Article 21 of Chapter 143, General Statutes of
North Carolina (and other lawful standards and regulations), the North Carolina
Environmental Management Commission proposes to extend the duration of the NPDES
permits listed above, subject to specific pollutant limitations and special conditions.
INFORMATION: A copy of the existing NPDES permits and a sketch showing the location of each
discharge is available by writing or calling:
Mr. Charles Weaver
NC DENR—DWQ - NPDES Unit
P.O. Box 29535
Raleigh, North Carolina 27626-0535
Telephone number: [phone], ext. 511
The existing permits are on file at the Division of Water Quality,Archdale Building, 512 North
Salisbury Street (Room 925), Raleigh, North Carolina. They may be inspected during normal office
hours. Copies of the information on file are available upon request and payment of the costs of
reproduction.
Date Z�Ilk
t�A;. Preston Howard,Jr. .E., Director
vision of Water Quali
Page 1 of 1

Division of Water Quality
Water Quality Section
July 24, 1997
Memorandum
To: File
r � �
From: Andrew McDaniel evil
Through: Carla Sanderson
Subject: Permit No. NC0021504
Biscoe WWTP
Zero Flow Policy
Montgomery County
The Town of Biscoe has a permit to discharge 0.6 MGD into Hickory Branch, a class C stream in the
Yadkin River Basin. Based on data and procedures outlined in the USGS "Low Flow Report"', the 7Q 10
and 30Q2 flow in Hickory Branch at Biscoe's outfall is estimated to be zero. The Town's current permit
has a BODS monthly average limit of 29.0 mg/L which is not appropriate for a zero flow stream. The
Instream Assessment Unit recommends that Biscoe's waste load allocation be modified in order to be
consistent with the Division's zero flow policy.
Giese,G.L. and Mason,Robert R. Jr. 1993. Low-Flow Characteristics of Streams in North Carolina. US
Geological Survey Water-Supply Paper No.2403.

WDES DOCYNENT SCANNING COVER SHEET
NPDES Permit:
NCO021504
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History
Date Range:
Long-term BOD analysis
Document Date:
January 9, 1992
THIS DOCUMENT IS PRINTED ON REUSE PAPER - IGNORE ANY CONTENT ON THE
REVERSE SIDE

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO021504
PERMITfEE NAME:
FACILITY NAME:
Town of Biscoe
Biscoe Wastewater Treatment Plant
Facility Status: Existing
Permit Status: Renewal
Major _
Pipe No.:
Minor
001
Design Capacity: 0.600 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
POTW
11
STREAM INDEX: 13-25-22-3-1
RECEIVING STREAM: Hickory Branch
Class: C
11xa„MI
Reference USGS Quad: F19SE, Biscoe (please attach)
County:_ Montgomery
Regional Office: Fayetteville Regional Office
Previous Exp. Date: 2/29/92 Treatment Plant Class: H
Classification changes within three miles:
>3mi.
Requested by: Jule Shanklin Date: 10/28/91
Prepared by: rya" Date: MAI a,
Reviewed by: Date: 3 `!
BoDu. 70.5 s�"� 1 "Z
Modeler Date Rec. #
Sk,a1 t4 Z-1 I (,SS
Drainage Area (mil) 0.5T Avg. Streamflow (cfs): 0- 4� s q7
7Q10 (cfs) O Winter 7Q10 (cfs) O 30Q2 (cfs)
Toxicity Limits: IWC 90 % Acute Chronic Ara.y
Instream Monitoring: 1tl 4p_ : mcoj Toa- ONLY (cA0O N'c v4w
AAA J%rI#.: L_Imrr
Parameters -Do ktALrO[-Iy TQMPF (V4rU.LT1Q%TY
Upstream Y Location to LEAsW Ioo dPsTRt�1wI
Downstream Location AT SR 155tm oA WHITE OAK C"
Effluent
Characteristics
Summer
Winter
BOD5 (m )
29
Z
NH3-N (mid)
(o
D.O. (mg/1)
(0
6
TSS (mg(1)
0
30
F. Col. (/100 ml)
Zoo _
Zoo
pH (SU)
(o _1
6-1
r pA,
Comments: Ige FAUUr4 CWp% Ex,STinitl Wtly-AI unArt AIOjIL tdQy QuAtfd4
'fowcir4 Aw ra 4e4 Cat TAB 60St 4W , A,JD Towc.ir4 Unit AGfEf 14 FIRST jytR.
VotI (-*mTL6rtoQ eF 146 8ASU3-Wl1)6 ➢IA4/TOE FAVUTY WOULD AfC&&W FeCEd6
A%wv* sx21A46NT L ntl1r.

r"�i/ Y•0'"" 's
— Ubstpgoii--
CP
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� `;.-'' i '. = ))�)I \' �;{ It• :boo r • L i/ , 1 oundry -
" Filtratio 1 i \ • 1 ... • \ I • I Y� / ',(• �Signa i• . } '..... • •. Q l 1•i • I 1
\ \v - !Plant Ke11A \ • fi ,•' ' ;{ • ' i �Z ; �.. �' f - ' /�
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it
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'ssT' 'Ulf l'• t �`` _---� J �%l ( r�'•.: - } ) .; `_\ \ l � i , •.�' � f � � J
ctl
<; /'• ll ,. 1 • �I ` -_ � ._` � i I /�__ � �/ �_ /i/(�^ /� ' /� r C O- C3'605.. ( •�._.. �; �; ii "� i � i
/'610 I • ',r'
NI
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00
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550 \'.(il r. ,.._. '^Y .. ; I r \'ri :'� S .a•1 tt t t- — 1 _�-

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Request # 6558
Biscoe WWI?
NC Domestic
-1 D 9 i -� Q V
Domestic 00%
Existing NOV 8 1991
Renewal
Hickory Branch ENV. MANAGEMENT
C FAYETTEVILLE REG. OFFICF
030715
Montgomery Stream Characteristic:
FRO USGS # 0212803790
J. Shanklin Date: 1986
10/28/91 Drainage Area (mi2): 0.55
F19SE Summer 7Q10 (cfs): 0.0
Winter 7Q10 (cfs): 0.0
Average Flow (cfs): 0.6
30Q2 (cfs): 0.06
IWC (%): 100.0
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The Biscoe discharge is to a zero 7Q10, positive 30Q2 flow stream. The facility has had 1 NH3-N
violation in the past year. Instream data for the past 2 summers does not indicate any "no flow"
situations. There are instances where D.O. values are less than 5 mg/l.
WLA was requested by the region in 2/90.
Should the facility plan to expand in the future, more stringent limits (511) would apply. Also,
upon completion of the basin -wide plan, the facility would probably receive more stringent limits.
aGcln'4 i tv17l AtUiL4 f t_4i -&nctAyLlA y Goo 40Xi Ui1"j
Special Schedule Requirements and additional comments from Reviewers:
-For Uuc (l) ytar i wl+t-. Um'lts 1?SSiQNtd offcV +hc G:vS+ vc%Vl.
Recommended by: .+ Date: %t 1
Reviewed'
Instream .
Regional
Permits &
RETURN TO TECHNICAL SERVICES BY: DEC 05 19 :1
/5
wg Njy Guw
Q#Nifi w.uN
or
Yv�'R'

Wasteflow (MGD):
BODS (mg/1):
NH3N (mg/1):
DO (mgft
TSS (mg/1):
Fecal Col. (/100 ml):
PH (SU):
Wasteflow (MGD):
BODS (mg/1):
N113N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (1100 ml):
PH (SU):
Toxicity testing
CONVENTIONAL PARAMETERS
Monthly Average
Summer
Winter
0.6
0.6
29
29
6
6
6
6
30
30
1000
1000
6-9
6-9
Monthly Average
Summer Winter
WQ or EL
0.6 0.6
29 29
WQ
** 1 1.8
WQ
6 6
WQ
30 30
200 200
6-9 6-9
** Chr Qtrly P/F at 90%
** or 6/6 with tox testing
** • Facility should have choice between ammonia limit (1/1.8) or chronic qtrly toxicity
testing at 90% with ammonia limit of 6 mg/l (sum/win).
Limits Changes Due To:
New regulations/standards/procedures
Parameter(s) Affected
Fecal coli, NH3-N/tox
_X_ Parameter(s) are water quality limited For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed
XA
No parameters are water quality limited, but this discharge may affect future allocations.

INSTREAM MONITORING REQUIREMENTS
Upstream Location: at least 100 ft upstream
Downstream Location: at SR 1556 on White Oak Creek
Parameters: D.O., Fecal coliform, temperature, conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes
V No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _N (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? _N (Y or N) If yes, explain with attachments.

CD (L �� F, fsr I eA P_
Facility Name $t SLoE bl1 WTf :Permit # N000215n4 Pipe # oo]_
CHRONIC TOXICITY MONITORING (QRTRLY)
The permittee shall conduct chronic toxicity tests using test procedures outlined in: .
The North Carolina Phase If Chronic Whole Effluent Toxicity Test Procedure (July, 1991) or subsequent
versions.
The effluent concentration defined as the Instream Waste Concentration (IWC) shall be ao % . The
chronic value for this analysis will be determined using the geometric mean of the highest concentration
having no statistically detectable impairment of reproduction or survival and the lowest concentration that
does have a statistically detectable impairment of reproduction or survival. The presence of 48 hour acute
toxicity will be determined using Fisher's Exact Test at 48 hours from test initiation. Collection methods,
exposure regimes, and further statistical methods are described by the document referenced above.
The permit holder shall perform at a minimum, uq arterly monitoring using these procedures to establish
compliance with the permit condition. The first test will be performed after thirty days from the effective
date of this permit during the months of6Ao D . Effluent sampling for this testing shall be
performed at the NPDES permitted final effluent disc arge 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 months in which tests were performed, using the parameter code THP3B
for the Chronic Value and TGA3B for the 48 hour Acute Toxicity measure (Pass/Fail). Additionally,
DEM Form AT-3 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, NC 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 any test data from this monitoring requirement or tests performed by the North Carolina Division
of Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test and will require
immediate retesting (within 30 days of initial monitoring event). Failure to submit suitable test results- will
constitute noncompliance with monitoring requirements.
7Q10 0.0 cfs
Permitted Flow 0. to MGD
IWC too. p %
Basin & Sub -basin 030i t5
Receiving Stream w(r-som BQ.
County Monlygoa egy
Recommended by:
Date %l 15 Ag-
QPIIM Version 7191

TIC- 19r JEAR LIM tT�
Facility Name $tScne W W1-F Permit # WbOZt Pipe # 1
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions. .
The effluent concentration at which there -may be no observable inhibition of reproduction or significant mortality
is 110 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
a r monitoring using this procedure to establish compliance.with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
5AN Jut.. D . Effluent sampling for this testing shall be performed at the NPDES
perms ed finaf 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, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
Nsa ,th Carolina Division of
Environmental Management
4401'Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as welt'as. all dosehsponse 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 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 any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 _ O . O cfs
Permitted Flow 0. (o MGD
IWC _ 100. v %
Basin & Sub -basin o 0 15
Receiving Stream 9 tc"RP_ Bg .
County 6dol+m�ioµERy
Recommended by:
Date 12 5-
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STREAM DATA
INSTREAM SELF -MONITORING DATA
MONTHLY AVERAGES
Discharger: 6l.�e0E�
Receiving Stream: IA,r 44 lie.
Upstream Location: Fir axdu/ b,O
DATE
Dec-9
Nov-9
r
Jul-9
Jun-9
May-9
Apr-9
Mar-9
Feb-9
Jan-9
Dec-9
Nov-9
Oct-9
Sep-9
Aug-9
Jul-9
Jun-9
May-9
Apr-9
Mar-9
Feb-9
Jan-9
Dec-8
Nov-8
Oct-8
Sep-8
Aug-8
Jul-8
Jun-8
May-8
Apr-8
Mar-8
Feb-8
Jan-8
Permit No. NG� SOr}
Sub -basin:
Downstream Location: M41-A& VA/c CA
TEMP 110. CONJ. FECAL COLI.
Qmu4m-m
' mW-111M
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Page 1

DIVISION OF ENVIRONMENTAL MANAGEMENT
September 30, 1991
M R M 0 R A N D U M
TO: Donald Safrit, Unit Supervisor '
Permitting and Engineep��d ' E✓
FROM: M. J. Noland, Regional SupervisYe�.',k;'
Fayetteville Regional Office
SUBJECT: Renewal of NPDES Permit -No. NCO021504
Town of Biscoe
Montgomery County
Please find enclosed the staff report and recommendations of the
Fayetteville Regional Office concerning the renewal of subject NPDES Permit.
If you have any questions or require any further information, please
advise.
MJN/RR/rhg
Enclosure
cc: Technical Support Branch

September 30, 1991
NPDES STAFF REPORT AND RECOMMENDATIONS
County Montgomery
NPDES Permit No. NCO021504
PART I. GENERAL
1. Facility and Address: Town of Biscoe
Box 26
Biscoe, NC 27209
2. Date of Investigation: September 13, 1991
3. Report Prepared By: Ricky Revels, Environmental Technician III
4. Persons Contacted and Telephone Number: Mr. David Asbill
Director of Public Works
Town of Biscoe
[phone] or 428-4376
5. Directions to Site: From Highway 24 just west of Biscoe, turn south
onto NCSR 1556. Travel approximately 1 mile to dirt road on left.
The treatment plant is located at the end of this road.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 20' 45"
Longitude: 79 47' 47"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
USGS Quad No. F19SE USGS Quad Name Biscoe, NC
7. Size (land available for expansion and upgrading): Approximately 10
acres.
8. Topography (relationship to flood plain included): Gently rolling.
9. Location of nearest dwelling: None within 1000 feet.
10. Receiving stream or affected surface waters: Hickory Branch
a. Classification: "C"
b. River Basin and Subbasin No.: Yadkin 15 (030715)
C. Describe receiving stream features and pertinent downstream uses:
Fishing, wading, and any other usage requiring waters of lower
quality.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 100 % Domestic
% Industrial
a. Volume of Wastewater: .6 MGD (Design Capacity)
b. Types and quantities of industrial wastewater: N/A
C. Prevalent toxic constituents in wastewater: N/A
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2.
Production rates (industrial discharges only) in pounds
per day: N/A
a. Highest month in the past 12 months:
lbs/day
b. Highest year in the past 5 years:
lbs/day
3.
Description of industrial process (for industries only)
and applicable
CFR Part and Subpart: N/A
4.
Type of treatment: This existing extended aeration facility
consists of
aeration basins, final clarifier, sludge digester,
sludge drying
beds and (4) four acre polishing pond followed by
chlorination
facilities.
5.
Sludge handling and disposal scheme: Digested sludge is
dried on sludge
drying beds and disposed of in the
county landfill.
6.
Treatment plant classification: Less than 5 points; no
rating (include
rating sheet, if appropriate). Grade II WWTP (No Changes)
7.
SIC Code(s): 4952
Wastewater Code(s):Primary 01 Secondary
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants Funds
(municipals only)? N/A
2. Special monitoring requests: None
3. Additional effluent limits requests: N/A
4. Other: N/A

PART IV - EVALUATION AND RECOMMENDATION
It is the recommendation of this office that Permit No. NC0021504,
issued to the Town of Biscoe, be renewed for an additional five year period.
Signature A' Report Preparer
Water Quality Regional Supervisor
Date
N

-1 I_j
punt
O 'ArT
It ISS6
DWO,
Tbww
or -.
"Umb (0
alit
CAM

(MISCELLANEOUS UNITS CONTINUED)
POINTS
(c)
Holding Pond for Effluent Flow Equalization and/or
Discharge . . . . .
5
(d)
Stage . . . . . . . . .
Effluent Pumps . . . . . . . . . . .
3
2
(e)
In -Plant Pumps (including air lifts). . . . . . . .
3
(f)
(g)
Stand -By Power Supply . . . . . . . . . . . . . . .
Thermal Pollution Control Device . . . . . . .
3
(h)
Treatment Processes for Removal of Metal or Cyanide
and
other Toxic Materials . . . . . . . . . . . . . . .
30
Total Points
3-0
CLASSIFICATION
Cl_ 5 - 25 Paints
ass I 26 - 50 Points
r 51 - 65 Points
Class IY . . . . . . . . . . . . 66 - Up Points
Facilities having a rating of one through four points, inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible ;charge.
-4-
North Carolina
Division of Environmental Management
Checklist of Facility Components
To be Used In Determing Facility Classification
All information will be printed: �w
TP
Name of Plant /aj% of S�sc0''
County I Y ti
Owner o /Contac Person avid �sbi// �y/'�� ' zQ"%sl�Z pQon �3 %W
Mailing Address
—street orP.O-fox o. lown or Cizy Zip
Permit Number Information Construction Status w
NPOES Permit No. NC2Please Check:ExistiFacility �✓
Date Issued $% O.3 ©% Upgraded Facility
New Facility
State Permit No. If Upgraded or New Facility, Give:
50% Completion Date
Date Issued - 100%OCoommpletion Date
Rated by jC ` Regional office
r1 A�'�V Date
Operator in Responsible Charge Day ; d Ash; Al Grade Jr
Design Flow of Plant in GPD r0 0D DOO Plant Class_
POINTS
ITEM
(1)
PRETREATMENT UNITS (see definition No. 34) . . . . . . . .
2
2)
DESIGN FLOW OF PLANT IN GPO (not applicable to non -
contaminated cooling waters and non -discharging systems
0 -- 20,000 . . . . . . . . . . . . . . .
1
2
20,001 *50,000 . • • • • • • ..
3
50,001 -- 100,000•. . . . .. . . . . • • • . •
4
100,001 -- 250,000 • • - • • • • • • .
250,001 -- 500,000 . . • • . •
8
500,001 -- 1,000,000 . . . . . . ... . • • • • • • •
1,000,001 -- 2,000,000 ...• •' •' '
2.000,001'(and up)-'rateI point additional for each200,000
GPD capacity up to a maximum of . . .
30
Design Flow'(GPD):
(3)
PRELIMINARY UNITS (see definition No. 3 ••
3
(a) Influent Pumps (including air lift) .
.
0
(b ) Bar Screens . . . . . . . . . . . . . . .
or
(c) Mechanical Screens, Static Screens or Comminuting
Devices •. . • . • • • • • • • • . • •
.
(d) Grit Removal or . . .• • . • • • ' ' .
2
(e) Mechanical or Aerated Grit Removal . . . . • •
I
(f) Flow Measuring Device or . . . . . . . . . .
2
(g) Instrumented flow Measurement . . . . . . . . . . . .
Effective
O pis
4/ 1/81
-I-

(4)
(5)
(6)
ITEM POINTS ITEM POINTS
(h)
Preaeration or Equalization . . . . . . . . .
1
(i)
Grease or. 011 Separators -- Gravity . . . . . . . .
2
Mechanical. . . . . . .
3
Aerated . . . . . . . .
5
(j)
Chemical Conditioning . . . . . . . . . . . . . . .
5
PRIMARY TREATMENT UNITS
(a)
Septic Tank (see definition No. 44) . . . . . . . .
2
(b)
Imhoff Tank . . . . . . . . . . .
3
(c)
Primary Clarifiers (including sludge. air lifts) . .
5
d)
Settling Ponds or Settling Tanks for -Inorganic Non -
Toxic Materials Involving a Discharge to the Surface
waters (sand, gravel, stone, and other mining operations
except recreationalactivities such as gem or gold
mining) . ....
10
SECONDARY TREATMENT UNITS
(a)
Carbonaceous Stage
(i) Aeration - High Purity Oxygen System . . .
Diffused Air System . . . . . . . .
0
Mechanical Air System (fixed, floating or rotor)
Separate Sludge Reaeration . . . . . . . . .
3
(ii) Trickling Filter - High Rate . . . . . . . .
7
Standard Rate . . . . . .
5
Packed Tower . . . . . . .
5
(iii) Aerated Lagoons . . . . . . . . . . . . .
10
(iv) Rotating Biological Contactors (biodisc). . .
10
(v) Sand Filters (intermittent biological) . . .
2
(vi Stabilization Lagoons
(vii; Clarifier (including sludge air lifts). . .
5
(b)
Nitrogenous Stage
(i) Aeration - High Purity Oxygen System.
20
Diffused Air Systems. . . . . . . .
10
Mechanical Air System (fixed, floating, or rotor)8
Separate Sludge Reaeration . . . . .
3
(li) Trickling Filter - High Rate . . . .
7
Standard Rate . . . . . .
5
Packed Tower. . . . .
5
(11i) Rotating Biological Contactors (biodisc) . .
10
(iv) Sand Filter (intermittent biological). . . .
2
(v) Clarifier (including sludge air lifts)
5
TERTIARY OR ADVANCED TREATMENT UNITS
(a)
Activated Carbon Beds - Without Carbon regeneration
5
With Carbon regeneration.
15
(b)
'Powdered or Granular Activated Carbon -Feed - Without
Carbon regeneration
5
With Carbon regeneration.
15
(c)
Ammonia Stripping . . . . . . . . . . . . . . .
18
(d)
Chemical Additions . . . . . . . . . . . . .
5
(e)
Denitrification Process (separate process). . . .
15
(f)
Electrodialysis . . . . . . . . . . . . . . ;
5
(g)
Foam Separation . . . . . . . . . . . . ;;
(h)
Ion Exchange . . . . . . . . . . . . . . . 'F.
5
-2-
15lots
(7)
(8)
(9)
(10)
(i)
Land Application (see definition No. 23b) . . . .
(not applicable for facilities under 10(a) . . . .
(j)
Mi cros creens . . . . . . . . . . . . . . ... . . .
5
(k)
(1)
Phosphorus Removal . . . . . . . . . . . . . . . .'
Polishing Ponds- Without aeration . . . . . . . .
With aeration . . . . . . . . . .
(m)
Post Aeration - Cascade . . . . . .
0
Diffused or Mechanical . . . .
5
(n)
Pre -Package Unit for Removal Oil and Grease ..
30
o)
.of
Reverse Osmosis
5
(p)
Sand or Mixed -Media Filters -- Low Rate . . . . ..
2
High Rate ..
5
SLUDGE TREATMENT.
10
(a)
Sludge Digestion Tank -- Heated . .. . . . . . . .
Aerobic . . . . . . . .
5
Unheated . . . . .
3
(b)
Sludge Stabilization (chemical or thermal) . . . .
10
(c)
Sludge Drying Beds . . . . . . . . . . . . . . . .
2
(d)
Sludge Elutriation . . . . . . . . .
5
(e)
Sludge Conditioner (chemical or thermal) . . . . .
5
(f)
Sludge Jhickener
2
(g)
Sludge Gas Utilization (including gas storage). . .
2
h)
Sludge Holding Tank -- Aerated
5
Non -aerated . .. . . .
2
(i)
Sludge Incinerator (not including activated carbon
regeneration)
10
(j)
Vacuum Filter, Centrifuge or Filter Press
10
SLUDGE DISPOSAL (including incinerated ash)
(a)
Lagoons . . . . . . . . . . . . . . . .
2
(b)
Land Application (surface and subsurface) -(see def.
23a ) . . . . . . . . . . . . .
10
(c)
Landfilled (burial) . . . . . . . . . . . . . . .
5
DISINFECTION
Na)
Pre
intermediate . . . . . . . . . . . . . . . . . .
I
(c)
Post . . . . . . . . . . . . . . . . . . . . . .
3
(d)
Dechlorination. . .
(e)
Chlorine or Ozone Generation
3
(f)
Radiation . . . . . . . . . . . . . . . .
MISCELLANEOUS UNITS
(a)
Holding Ponds or Holding Tanks for Inorganic, Non -toxic
Materials with no Discharge to the Surface Waters
2
(Sludge handling facilities for water purification
plants, sand, gravel, crushed stone and other similar
operations --see definition No. 10)
(b)
Holding Ponds or Holding Tanks for Organic or Toxic
Materials with no Discharge to the surface Waters
4
(Any pump, valve, or other mechanical control subject
to failure creating a potential for bypass or discharge
from the holding ponds or tanks will necessitate a
minimum classification of Class I requiring a certified
operator).
-3-
5
5 pf-s

.d
c.1A
c
a�
c)
V
M.w
4
Engineer Date Rec. #
NPDES WASTE LOAD ALLOCATION Cis z3 ao sc,a
Facility Name: 20si//aF l_, eac Date
M
ExistingEy
Permit No.: Pipe No.: Qom; County •
Proposed
Design Capacity (MGD): 40.6 Industrial (% of Flow): Domestic (% of Flow): /�n7
Receiving Stream: / R 'V6 Class: C Sub -Basin: ` ^ 07 ` / S'­
Reference USGS Quad: � (Please attach) Requestor: iOL�h/,P; Regional Office -
(Guideline limitations, if applicable, are to be listed on the back of this form.)
Design Temp.: Drainage Area: lJ• 5 5� _ Avg. Streamflow:_
7Q10: 0 Winter 7Q10: 30Q2:0(�_
Location of D.O.minimum (miles below outfall):. Slope: _
Velocity (fps):. Kl (base e, per day, 200C): K o
2 (base e, per day, 20 C):
a.cc: U maLU awa"441aj zoo tj
P Wiyl a/t 6i-Jd0 {vv D rV 16 1 ro SO0a tutu
Effluent
Characteristics
Monthly
Average
Comments
DDs m 1i
a..
tm/1
0 C A
U
165 ( it)
o
F 5(
CaJ CoUrw L/ioo
iL •A44, -40nkiU Go 1
Effluent
Characteristics
Monthly
Average
Comments
40 v jq66
ihCj
goo
Original Allocation --64U aky" VX &K �YV tj , -(Vr' 0-0.) j2VKPeVa:tUXJJ C6 C)OCk UI )� krCd C,6bTr)r
Revised Allocation na�e�s) ef- Re��is#en e�} � nS uYYf-ht1hcA)d&k"e pP t-Aw4k a f"v jg6Ac _.
Confirmation F,(' l�� bills ,i.¢,ut�l (.,04'il C'Norw 7uY� Gt`
Pr red By: Reviewed By: Date: y U
�v

eov5
3�1��4p
-low K o -� � i6co e
D.c-0 ma CA
�gb
Y�0Z a
;vow ' D
3 a" .06oto
l o fn.o . fie c /�� a vrwtu�,
A(-���;
l /d

T4irnp 0L)crncn)
9
9. I (8. I)
�� s
5
/a.g (99)
/7
G.3 (5 9)
al
1 y
8 • a.
51
17
7
i-7
13
q. 6 (7. X)
40
9 16.¢
a(a-

fI
Request
------------------- WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Town of Biscoe
NCO021504
Domestic
Existing
Renewal
Hickory Branch
C
030715
Montgomery
FRO
Mick Noland
2/23/90
F19SE
r i99G
Nop,-�jlr5602
-------------------
1 (03
&Tzm
APR s990
ENV. MANAGEMENT
FAYETTEVILLE REG. OFFia
Drainage area: 0.550 sq mi
Summer 7Q10: 0.00 cfs
Winter 7Q10: 0.00 cfs
Average flow: 0.60 cfs
30Q2: 0.06 cfs
-------------------- RECOMMENDED EFFLUENT LIMITS --------------------------
New Limits Existing Limits
Wasteflow (mgd): 0.60 0.60
BOD5 (mg/1) : 29 29
NH3N (mg/1): 6 )K- 6
DO (mg/1): 6 6
TSS (mg/1) : 30 30
pH (su) : 6-9 6-9
Fecal Coliform (/100ml): 200 1000
Toxicity Testing Req.: Chronic/Ceriodaphnia/Quarterly
---------------------------- MONITORING -----------------------------------
Upstream (Y/N): Y Location: above discharge point
Downstream (Y/N): Y Location: below discharge at mouth of Hickory Bra
----------------------------- COMMENTS ------------------------------------
Recommend instream monitoring for D.O., Temperature, Conductivity, and
Fecal Coliform.
*Toxicity test added for possible ammonia toxicity instream.
+-Facility may have choice of meeting NH3N limit (sum=1 mg/l & win=1.8 mg/1)
Levels of chlorine in the effluent predict probable toxicity instream.
Facility will receive letter addressing this problem.
---------------------------------------------------------------------------
Recommended by: Date:
Reviewed by
Instream Assessment:
Regional Supervisor:
Date:
Date:
� ZPermits & Engineering: / Date:
RETURN TO TECHNICAL SERVICES BY: APR 2 8 1990

10/89
Facility Name /t7UM 6-r SI,5eO Permit # ktC66 c7 kjW
CHRONIC TOXICITY TESTING REQUIREMENT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity in any two consecutive toxicity tests,
using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is q 9 % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quartc-rly monitoring using this procedure to establish
compliance with the permit condition. The, first test will be performed after thirty days from
issuance of this permit during the months of Max. JU t7 . 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 pemut 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, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
Test data shall be complete and accurate and include all supporting cheinical/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 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 any test data from this monitoring requirement or tests performed by the North Carolina
Division of Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
7Q10 0 cfs
Permited Flow 0.0 MGD Recommended by:
IWC% 102)
Basin & Sub -basin 030?15
Receiving Streamk2�'(JiyYq
County rxk Date `3
**Chronic Toxicity (Ceriodaphnia) P/F at 91%, of 4 See Part ,�, Condition _.

NPDES D®C61WENT SCANNING COVER SHEET
NPDES Permit:
NCO021504
Document Type:
i
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History
Date Range:
Long-term BOD analysis
Document Date:
October 27, 1981
THIS DOCUMENT IS PRINTED ON REUSE PAPER - IGNORE ANY CONTENT ON THE
REVERSE SIDE

IX.n do
0
Facility Name:
NPDES WASTE LOAD ALLOCATION
efvlon , Wu?P 1. T.ndte of Date: 0'//0'46f
Q/
Existing Permit No.: .flC!OOZ/S041( Pipe No.: 00County: ix
Proposed -`
Design Capacity (MGD): 0 6~ Industrial (% of Flow): Domestic (% of Flow):
Receiving Stream: 'zf la!!/Y[u Bxmnyh- Class: Sub -Basin: 03-07-/S
Reference USGS Quad: (Please attach) Requestor: Regional Office aft-1"�
(Guideline limitations, if applicable, are to be listed on tlE, back of this form.)
Design Temp.: �5oCDrainage Area: Q, S4 VY ; Avg. Streamflow:
IQ10: 6, n�� CA Winter 7Q10 : 30Q2 :
Location of D.O.minimum (miles below outfall): Slope:. 'y is eJ %YV16
Velocity (fps): C?.? Kl (base e, per day, 200C): U K2 (base e, per day, 200C): WL'5 6)
Effluent
Characteristics
Monthly
Average
Comments
N H -
%
S
30
r n IJ '
n N
& -9
'. u.
Original Allocation a
Effluent I Monthly)
Characteristics Average I Comments
Revised Allocation Date(s) of Revision(s)
CXpared
ron � (Please attach previous
"('`pP By: "k { L:2 un Reviewed By
allocation)
Date: Z
gyp-.

NPDES WASTE LOAD ALLOCATION
Facility Name: �«��� 11S ��SC_'�2.
Existing Permit No.: Pipe No.: County: 4- vvk-
Proposed F I y
Design Capacity (MGD): Industrial (% of Flow): .Domestic (% of Flow): i(D(l b
«�h
Receiving Stream: Class: C_ Sub -Basin: 03 07- 1-)
Reference USGS Quad: F9 (Please attach) Requestor: �1�.t. n f� Regional Office r /L_z�
(Guideline limitations, if applicab�, are to be listed on the back of this form.)
o
Design Temp.: S C�n Drainage Area: 0.54 r- Avg. Streamflow:
7Q10: 0,(I")L d01 Winter 7Q10: 30Q2:
Location of D.O.minimum (miles below outfall): Slope:. y5.5
Velocity (fps): z % Kl (base e, per day, 2000 : C-) 3 K2 (base e, per day, 20oC):
Effluent
Monthly
Characteristics
Average
Comments
CID S
hn
ASS
30rre)i
�7E,Zt06
16//U6
b --iS
Effluent Monthly
Characteristics I Average I Comments
Original Allocation to".
Revised Allocation Date(s) of Revision(s)
(Please attach previous allocation)
i
Prepared By: -Lhnl 0 Reviewed By:_� Date:

Form j100.1
#74
WASTE LOAD ALLOCATION APPROVAL FORM
Facility Name: Biscoe WWTP
County: Montgomery Co. Sub -basin: 03-07-15
Regional Office: Fayetteville Requestor: Kitty Kramer
Type of Wastewater: Industrial
Domestic 100
If industrial, specify type(s) of industry:
Receiving stream: Hickory Branch Class: C
Other stream(s) affected: White Oak Cr Class: C
7Q10 flow at point of discharge: 0.02 cfs
30Q2 flow at point of discharge:
Natural stream drainage area at discharge point: 0.54 mil
Recommended Effluent Limitations
Monthly Avg.���
Qw = 0.6 mg/l
BOD5 = 29 mg/1 APR 30 1991
NH3-N = 6 mg/1
DO = 6 mg/1
TSS = 30 mg/l ENV. OPERATIONS
Fecal Coliform = 1000/100 ml ftyetteville Reg. Office
pH = 6-9 S.U.
This allocation is: /_/ for a proposed facility
Recommended and
/X-/
reviewed by:
Date:
Head, Techncial Services Br nch Date:
Reviewed by: ®® nnQQnn
Regional SupervisorDate: S 5�
Permits Manager Date:
Approved by: .L+�
Date:
Division Director_
for a new (existing) facility
a revision of existing limitations analysis changed due to
a confirmation of existing limitations
survey data.

DIVI3ION OF F.NVIROINENTAL MANACFt4A1JT
June 7, 1979
P,onorable J. David Monroe
Mayor, Town of Biscoo
Post Office Box 26
Discos, North Carolina 2720^
Subject: Hasteload Allocations
Town of liincoe
Montgomery County ?Ol facility Plan
Project Numbor C37045301
Dear Mayor Eonroe:
During the meeting on the ?wntgomery County 201 Plan held in Raleigh
on May 24, 1979, Mr. Ray Topping of Moore, rarAner R Associates requested
that the State clarify its position with respect to the wanteload allo-
cations for the Town of Biocoe, North Carolina. The pi:rpose of this.letter
is to clarify the Division of Environmental Management's poottion on the.
Town of Biscoo's future effluent limits and their relation to the ongoing
201 Facility Plan for Montgomery County.
At present the Tow of Discos operates a 0.600 mgd wastewater treat-
ment facility with the following effluent limits:
BODS 23 mg/l
TIN 10 mg/1
D.O. 6 MR/1
R.P.D.'.S. Permit lhanber 17.C. 0(%?l5rt4
Pxpi.rea Pecamber 11, 10?1
On April 17, 197R, the Division of f:nvirormental Management trans-
mitted a letter to Mr. Ray Topping which updated the wanteload allocation
for the Bincoa wastewater treatment facility. On May 22, 1978, additional
limits were transmitted to Mr. W. K. Dickson in order to expand the
April 17. 197S allocations table, thus providing a rar.Fe of design flows
and corresponding effluent limits. As stated in the "ay 22 letter, comet
plience with these limits will be required upon reissuance of Biocoe's
N,P.D.F..S. Permit. those linitn should, therefore, he used in determining
the treatment reouirements for Viscoe for the ?n-year planning period
currently being studied in the Yontoomery Cnun.ty 701 Plan.

Honorable J. David Monroe
June 7, 1979
Page Two
It should be noted that al.thongh the limits have changed significantly
in correlation with the effluent D.O. values, the impact on the treatment
proceso itself should be minimal. For example, the effluent limits cur-
rently listed in the 201 Plan are as follows:
Aminoni a
Flow
ROD
N
D_0.
n.6
23
It
6
0.6
22
in
5
2.0
16
10
5
the above limits would be changed as follows:
An wnis
Flow
Bons
N
D.O.
0.6
14
4
5
n.6
17
10
6
2.0
12
4
5
2.0
15
1.0
6
By adding cascade aeration or some other form of post aeration
capable of achieving 6 mg/l D.O. limitations, the 2.0 mgd regional
plant under consideration in the 201 Plan will have its effluent limits
changed from ROD : 16 mg/1 to BOn : 15 mg/l. This change should have
no effect on the5treatment proceee design.
The change in limits at the 0.600 mgd design flow above a more
significant change of 6 mg/l BODS and 1 mg/l ammonia-N at a D.O. of
6 mg/1. However, due to the fact that the existing Bi.scoe facility
is designed for 0.600 mgd with a detention time of 48 hours in its ex-
tended aeration basins, it should still he able to meet the limits as
revised.
It in important that the moat recent effluent limitations be used
in the design process of the 201 Facility Plan. It is hoped that the
Division of Environmental Management's position on this point has been
clarified and the work can now move forward towards the completion of
the Montgomery County 201 Facility Plan.
If there are any comnente or questions, please contact the Local
Planning Management Unit at 919/733-5501.
Sincerely yours,
.A
A. F. McRorie.
Director
RAD:jI
cc: See Attached

A ANorte Carolina D�;partment of Natural
Resources &Community Development
James 3. i lur.t, Jr., G ::. r1ur Howard N. Lee, Secretary
DLVIS,LON OF F.NVIRONMEINIAI �L1NA(;P;idEN'f
PLANNING AND MANAGEMENT SECTION
May 22, 1_978
Mr. W. K. Dickson
1429 Elizabeth Avenue
Charlotte, North Carolina 28204
Dear Mr. Dickson:
In a recent letter to Moore, Gardner and Associates, Inc., we presented the
limits for the Biscoe Worp that wi.l.l be required upon rrissuance of their NPDES
permit. We have attached these limits with an expanded LahLe to reflect other
design flows and included limitations for an effluent D.O. of 6.0 mg/l.
The basis for the allocation change was a roacration-velocity study of
Hickory Branch. The new limitations arc similar to tine previous limitations
except for the 6 mg/l D.O. effluent requirement.
We have also attached a discussion and explanation of the effluent limits.
Please contact Mr. Forrest Westall of my staff if you have any questions concerning
the limits.
cc: Dennis Ramsey
R. F. McGhee ll/1'
11. B. Dul{art
Vernon Harris
R. E. Topping
Attachment
S inccrely,
& 1giflal Signed By:
R W. Van Tilburg
i:. W. Van Til.hurg, ActLng Chief:
a,.. ,jail
1 r. lyu.�l U;�•. ., 1":v'�P�.� L!� nl,rpinrrr

DIVISIO:+ OF ENVIROXU-NTAL MA AGEMENT
PLANNING AND tLkNAGEUNT SECTION'
April 17, 1078
Mr. R. E. Topping
Moore, Gardner and Associates, Inc.
P. 0. Box 723
Asheboro, North Carolina 27203
Dear fir. Topping,:
7.;.i..
�c
e,r+
In response to our ravLcw of the Mont;;omery County 201 Plan Addend=,
we feel that we should verify the current allocation .for the ISiscov MhrP.
This updated allocation iu attached.
This information was passed along, to you by phone in 1977 along with
an explanation of how these new limits were developed and how they are to
be applied. A brief review of the two n::ijor points Of this explanation will
be given:
1) Tire technical basis for the change was a 1;77 reaeration-velocity
study of 111e't;ur3, ;ranch
2) These limits will be applied whan tin: .:.'Ji:S permit for ;iscoc is
re -issued
We have also attached a general discussion and explancetime of the effluunt
limits. Please contact Mr. Forrest West -all. or :uy Staff if YOU have any questions
concerning the limits.
Sincerely,
Original Signed By:
R. W. Van Tilburg
R. w. Van Tilburg
Acting Chiof
cc: Dennis Ramsey✓
R. F. McGhee
H. A. Dutiart
Vernon Harris
Attachment

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NPDES DOCUWENT SCANN1NO COVER SHEET
NPDES Permit: NCO021504
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History Date Range:
Long-term BOD analysis
Document Date: March 7, 1980
THIS DOCUMENT IS PRINTED ON REUSE PAPER - ICNORE ANY CONTENT ON THE
REVERSE SIDE

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K,, STUDIES
11
Date
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Date
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Date
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Date
Time D
Next Water Supply V 1 LC_C
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STRETCH Ratio H-3
o
Z0(Da 1)
Ka
Flow
Slope
Slope Fiel
(Measured)
1q�
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_

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NPDES DOCUWEiNT SCANNENS COVER SHEET
NPDES Permit: NCO021504
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History Date Range:
Long-term BOD analysis
Document Date: January 1, 1979
THIS DOCUMENT IS PRINTED ON REUSE PAPER -- ISNORE ANY CONTENT ON THE
REVERSE SIDE

AST PNOJECT RE-V r t-:t1
1. New of City: 8(Ibc0I&-
a. Flame of Facility: ,
3. Effluent Limitations:
BOD .
17
-AS I
NIJ / P
Suspended Solid
�[)
4
� U m y� P
Phosphorus NIA-
V
Ammonia Nitrogen
V 1
Toted Nitrogen N/ft
Other ticz) o J,%fofvn ;
Woo
14NN/40
I) � 0; 5,0 M3i P
4. Proposed Waste-.ratCr t.Vatrnetut
ureic
prc:c.es�;ts
5. Total costs ;}(' t 1w trent.went faci.l tty
Capital
Yearly 0&M
Present Worth
b. Incremental AST posts (cihove :se-rundaty)
Capital
Yearly 0&M ~
Present Worth
7. Comparison of the total a3rlilual. household expenditure for all of the
proposed treatrnc rit works with the median lo-al household income
annual hou_sef,uld exjc- ftsre
median lcc;il tncc�rw

8. Have violations in Water Quality St,in,i;crcls bu-en c1;,ccunented for parameters
related to the need for .1ST?
No
Do not know
Yes ,
SEIE z4-'.0 13 r-xf � �n
anaton is
yhosphorus
coliform bacteria
other
9. What is the basin of the AST requireruent?
If justificaLion Is based upon nerd to protect public health,
go to #10. '
f justification Is ba,;L'd upon need r.0 meet Water Quality,
Standards, go to #11.
_�.. If justtf icat Ion Is ba.,i d upon neQ j to comply with effluent
limitation.,; r.stablished by internat I,,n:il agreement (e.g., Great
Lakes Agreement), stop.
---If juSLifir_.ztion is based upon noiud r,., comply with Staten law
or re),u Lat ion, go to #12 .
juytifi,:at icin is baye,t upon need ro comply with an enforcement
order or ccIurt order, go to #11.
If other; explain, and go to #14
10.A. Which. pollutants .iiu:a be removed to protect public. health?
10.8. What are the receiving water user; which must he protected?
10.C. Is the specified level of treatment ne,_esnary to protect public health?
Yes
No
Goto#14

11.A. Is the receiving wacur an ititc*.rmitte>n 6t rc;tm?
Yea
No % c��� l0-�( �vuu law in 4 ,C_Lof� Brznc�
II.B. Are water quality criteria, w:tich 11`;f* is ntrc:,; ;ir> Lo protect, consistent
with Iced Book (Quality C:riturin lc,r •�,itotj?
�c:t
110
lI.C. Was the summer seven-day, tun -year f low tuied a. Lhc desi.ga condition?
Yes
If no, give Lie l ign Condition
11.D. Is the effect of nonpoint sources likely to he negligible and not interfere
with the attainment of dcsli-ed btneff.clal uses after AST is achieved?
-L— Yes Sea n.R c_, c.6 Ci 9�iC�Um o a
No
Do not. know
11.E. Is the AST requ.i:ument 1),tSCLI upon a puLdc!Ifnp__ or furzriula considering factors
such as dilution?
Yes.
No, go to
a. Is the effluent requirei.iont writteij fate W;,trc Quality Standards?
Yes
Nj
Co to # 14
11.F. Is the A7y,
Uirem(��it h;.:,ecl on awrt•;t.r_l(;ad .0 to,:it ton utudy?
S;
No.Expta;n other proc ed,ire for drternttning AST limits to
_...__._ ac tifeve water qua? ith stondatds, and go to 014.

a. Was the wasteload allocation documented and ar.! the results reproducible?
Yes
No
b. Was the water quality analysis conducted and b.iscd upon adequate data
collected from the receiving water?
✓Yes, go to #14 zx& cLto..ckv- �= I�hc`71dh
No
c. Was data from like or similar rcc eivtng Matti!; used for the water quality
analysis?
Yes
No
Go to#14
C
12.A. Identify the law or regulation. When did it effective?
12.B. Is the law/regulation .int.cride.d ;o protect an luter,ntttent stream?
Yes
No
I2.C. Is the effect of nonpoint soc►tc•*s likely to be nol;l.tgibl.e and not interfere
with attainment of de.3ircd beneficial uses after AST is achieved?
Yea
No
Da not kriow
12.A. fused upon the most r,!c•c:,it Information availsb.le, characterize the effluent
limitation as.
More st,inte►at than nece!.,teary to mect water quality criteria;
not suffinient to meet beneflef.al uRes;
rsufficient to al ic'w criteria and di-stgnated beneficial uses to
be met with r.-easonayle certainty;
no ludi;ein; it pos-,Able b.► ,,od upon av,ai tahlt information.

13.A. identify the enforcement order or colii'L carder,
13.B. Based upon the most recent information avallable, characterize the
effluent limitation as:
more stringent Than necens:ry to meet water quality criteria;
not sufficient to meet cie!i 1 gua ted beneficial uses;
sufficient to allow criteria and designated beneficial uses to
be met with reasonable certainty;
no judgement posecible ba.ied upon avai.l.ibl.e information.
14. Should there be a turther review of the proposed AST requirement?
Yes
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NPDES DOCUMEMT SCANNIM6 COVER SMEET
NPDES Permit:
NCO021504
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
Permit History
Date Range:
Long-term BOD analysis
Document Date:
May 12, 1975
THIS DOCUMENT IS PRINTED ON REUSE PAPER - IGNORE ANY CONTENT ON THE
REVERSE SIDE

DWR WQP Emergency Roster DWR CONFIDENTIAL April 2019 Page 38

DATE: -11,1 /-1 11'7.r
TECHNICAL SERVICES
Permit Review - Evaluation Procedure
FACILITY:
Name s co e- w T P
Individual in Charge
LOCATION:
Town 61scoe
County ► y,tgDWI
MCPR 14 1 11
Tor -
DEM Region S.C, n
Sub -Basin 03 -dI - IS cI.
RECEIVING STREAM:
Name i4ickor7 gr" Class "C
7110 Flow o,o S 4S Slope Ez'�,
PERMIT:
State
NPDES
Certification
Application
COMMENTS:
cc: A. F. McRorie
L. P. Benton
C. L. Woody
Number
nlcooz/S94
Issued
Expires

EFFLUENT LIMITS:
Limit Based On -
Secondary
BPCTCA
Water Quality
M & 0
Limit Specified As -
BOD5
mg/l
TSS
mg/l
Coliform
(Fecal)/100 ml
pH
Temperature of
Flow
mgd
DID.
Schedule of Compliance:
Preliminary or 201
Construction Drawings
Start Construction
Complete Construction
Operational Level
Basin
Plan
X�
Basin
Plan
20
3a
zoo
t�9
NPDES
Permit
NPDES
Permit
ZU
Basin NPDES
Plan Permit
State
Permit
State
Permit
State
Permit