NC0020338_Wasteload Allocation_19901022

NPDES DOCUMENT SCANNING: COVER SHEET
NC0020338
Yadkinville WWTP
NPDES Permit:
Document Type:
Permit Issuance
r
Wasteload Allocation.
Authorization to Construct (AtC)
Permit Modification
Speculative
Limits
Correspondence
Instream Assessment
(67B)
Environmental Assessment (EA)
1
Permit
History
Document Date:
October 22, 1990
This document is printed on reuse paper - ignore arty
content on the reirerse side

NPDES WAS'lE LOAD ALLOCATION
PERMIT NO.: NC0020338
PERMIT I'_E NAME:
Town of Yadkinville / Yadkinville WWTP
Facility Status: Existing
Permit Status: Modification
Major V Minor
Pipe No.: 001
Design Capacity: 1.0 MGD
Domestic (% of Flow): 7 7,
Industrial (% of Flow): c?o?, 5
Comments:
Change discharge point from Haw Branch to North Deep Creek
RECEIVING STREAM: North Deep Creek
Class: C
Sub -Basin: 03-07-02
Reference USGS Quad: C16NW (please attach)
County: Yadkin
Regional Office: Winston-Salem Regional Office -
Previous Exp. Date: 5/31/94 Treatment Plant Class: Class II
Classification changes within three miles:
none
PLOTTE
Requested by: Rosanne Barona Date: 9/21/90
Prepared by: c,73r oe4-afDate: /0 7
Reviewed by: C 9-7,1' , , 2 C5 Date: 6
T3o-p 13.2 (t so) d ZZ go
W czlet. W o --
Modeler
Date Rec.
#
('7),t/S
9/&//5e,
5-6 65-
kl 2
Drainage Area (mi ) 35. 7
Avg. Streamflow (cfs): 39
7Q10 (cfs) 3. `1 Winter 7Q10 (cfs) /0
30Q2 (cfs) /y
Toxicity Limits: IWC a Q % Acute, ij
Instream Monitoring:
Parameters 17O Terre Co4d.) ieca� Upstream ,/ ✓ Location old O S C/ (
Downstream ✓ Location() above covi-f tta,,ce w/Kaa 8,,,
}'ewn I`Zd• bridge
Effluent
Characteristics
Summer
v
Winter
BOD5 (mg/1)
3 0
3 0
NH -N (mg/1)
D.O. (mg/1)
5"
TSS (mg/1)
30
3Q
F. Col. (/100 ml)
Zo 0
ao 0
pH (SU)
4. _q
_ 9
D;iyGrease( O
30I (a0
30%4,O
ME7-A4,5 — daily
ruax • (3 fL)
Cad Nil un. %
NI 'idle I 309
CiArrintiurv, 175
(_yarikde I8
L.ea.d 82
Rwride 1200
Comments: AttojkliTOk. - (IA ppPr ��i e, (Vlercur(i, Si Ivey ,
S e lev . 4..i +5efrI f_ , luwl T hnc,cr+"
d

Request No.:
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Wasteflow (mgd) :
BOD5 (mg/1) :
NH3N (mg/1) :
DO (mg/1) :
TSS (mg/1) :
Fecal coliform (#/100m1):
pH (su) :
Oil and Grease (mg/1):
City of Yadkinville WWTP
NC0020338'
77.5 % Domestic/22.5% Industrial
Existing/Modification
North Deep Creek
C
30702
Yadkin
Winston-Salem
Rosanne Barona
9/21/90
C16NW
Drainage
Summer
Winter
Average
RECOMMENDED EFFLUENT LIMITS
PROPOSED
summer winter
1.000 1.000
30 30
16 monitoiljX1.5a9
5 5
30 30
200 200
6-9 6-9
30/60 30/60
5865
j ppe
p: {;w., E
D
JOT 1 e 1990
area it S. 900'Wh
7Q10: 3.90 cfs 1
7Q10: 10.00 cfs
flow: 39.00 cfs
30Q2: 14.00 cfs
METALS (ug/1) :daily max.
(existin)
Cadmium 7 (2.3)
Chromium 175 (56)
Lead 88 (28)
Nickel 309 (99)
Cyanide 18 (5.6)
Fluoride 1800 (no limit)
Toxicity Testing Req.: Chronic Quarterly at 28%
MONITORING
PARAMETERS: DO, Temp, Cond, Fecal Coliform
Upstream (Y/N): Y Location:Old US 421
Downstream (Y/N): Y Location:1.) above confluence with Haw Branch
2.) Shacktown Road bridge
COMMENTS
Facility cannot meet its metals and toxicity limits at its present site,
Haw Branch. Propose to relocate discharge to North Deep Creek for greater
dilution. Model predicts existing limits (30/16/5) will protect stream DO
The IWC will drop from 89% at Haw Branch to 28% at North Deep Creek.
Ammonia toxicity is still possible (allowable summer=3 mg/1;winter=12 mg/1).
Facility will receive letter addressing chlorine toxicity.
MONITOR: Copper, Zinc, Mercury, Silver, Selenium, Arsenic, Aluminum.
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL SUPPORT BY:
Ja,K.ctu,g,
Date:
Date:
l 6/ t1/ 90
/0/510
Date: %G / L--16
Date:
NOV 0 6 1990

10/89
Facility Name Ct 4.y o-P iadkIntiJuiri> Permit # NCGD 20 33sy
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 a$' % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterly 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 %MO, M'1 , J ucr 0 LT • . 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, 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 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 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 3.9 cfs
Permited Flow I. 0 MGD
IWC% as.
Basin & Sub -basin 03 - 0 7 - 02.
Receiving Stream unrt-h ""D eef, Greer e,�a•�
County if!dDate U /0/2 gn
**Chronic Toxicity (Ceriodaphnia) P/F at 2%,34N1 ltrR,J'L.0Cr,'See Part 3 , Condition I
Recommended by:

3Cfrf
State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary October 8, 1990 Director
Jerry Carlton
Town Manager
P.O. Drawer 816
Yadkinville, NC 27055
Subject: Chlorine Toxicity
NPDES Permit No. NC0020338
Yadkin County
Dear Mr. Carlton:
Chlorine, a widely used wastewater disinfectant for the treatment of
coliform organisms, often remains instream in residual amounts that may prove to
be toxic under critical low stream flow conditions. In the last decade, EPA
assessed the potential adverse effects of chlorine to the aquatic environment
and has taken steps to reduce the impacts through the development of federal
criteria. In 1986, EPA recommended that all states have a chlorine standard by
their next triennial review of water quality standards.
In revising its water quality standards in 1989, North Carolina developed
an action level for chlorine of 17 ug/1 (freshwater classes only). In addition,
the fecal coliform limit was reduced from 1000 colonies/100 ml to 200
colonies/100 ml. Under a new DEM procedure, dechlorination and chlorine limits
are now recommended for all new or expanding dischargers proposing the use of
chlorine for effluent disinfection. The Division is reviewing chlorine levels
from all existing dischargers as part of their NPDES permit renewal process.
Our records indicate that chlorine from your facility's effluent discharge
is considered toxic to the receiving stream under low flow conditions, i.e., the
amount of chlorine discharged causes a violation of the instream action level
for chlorine (17 ug/1) under 7Q10 conditions (the lowest average daily flow for
seven (7) consecutive days during a ten (10) year period). Action should be
taken to reduce the effluent concentration of chlorine to an acceptable level.
Based on your facility's instream waste concentration of 28% (at the North Deep
Creek discharge point), an acceptable level of chlorine in your effluent is 60
ug/1 or 0.06 mg/l. If this level is not feasible, you should consider
dechlorination or alternate methods of disinfection for your facility to ensure
that both chlorine and bacterial limits are met. However, please note that an
authorization to construct must be obtained from this Division prior to any
alteration to your treatment plant.
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

-2-
The Division is currently reviewing its water quality regulations
pertaining to chlorine. In the future, effluent limits and/or dechlorination
may be required of existing facility's with chlorine problems. If the chlorine
levels in your facility's effluent remain unchanged, a chlorine limit or a whole
effluent toxicity testing requirement may be added to your permit limitations.
Please feel free to call Steve Mauney of the Division's Regional Office at
[phone], if you have any questions or comments regarding this issue.
Sincerely,
Steve Tedder
Water Quality Section Chief
SWTteaj'
cc: Winston-Salem Regional Office
Central Files

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01/01/80 ver 3.1 T OXICS REVIEW
Facility: Yadkinville WWTP
NPDES Permit No.: NC0020338
Status (E, P, or M) : E
Permitted Flow: 1.00 mgd
Actual Average Flow: 0.4270 mgd
Subbasin: "030702
Receiving Stream: NORTH DEEP CREEK I PRETREATMENT DATA I----EFLLUENT DATA ----
Stream Classification: C I ACTUAL PERMITTED'
7Q10: 3.90 cfs I Ind. + Ind. + 1 FREQUENCY
IWC: 28.44 % I Domestic PERMITTED Domestic I OBSERVED of Chronic
Stn'd / Bkg I Removal Domestic Act.Ind. Total Industrial Total I Effluent Criteria
Pollutant AL Conc. I Eff. Load Load Load Load Load I Conc. Violations
(ug/1) (ug/1) 1 % (#/d) (#/d) (#/d) (#/d) (#/d) 1 (ug/1) (#vio/#sam)
Cadmium S 2.0 1 92% 0.01 0.019 0.029 0.14 0.150 1 2222.00
Chromium S 50.0 I 76% 0.01 0.052 0.062 1.08 1.090 1 75.00 1 I
Copper AL 7.0 1 82% 0.12 0.063 0.183 0.80 0.920 1 163.00 1 N
Nickel S 88.0 1 32% 0.02 0.023 0.043 0.33 0.350 I 395.00 1 P
Lead S 25.0 1 81% 0.08 0.374 0.454 0.35 0.430 1 289.00 1 U
Zinc AL 50.0 1 77% 0.77 0.128 0.898 1.30 2.070 1 242.00 1 T
Cyanide S 5.0 1 59% 0.13 0.005 0.135 1 . 5.00
Mercury S 0.012 1 0% 1 G 0.20 1 S
Silver AL 0.060 1 0% 1 292.00 1 E
Selenium S 5.0 1 0% 450.00 1 C
Arsenic S 50.0 1 0% 1 10.00 1 T
Phenols S NA 1 0% 1.410 1.410 2.00 2.000 1 1 I
NH3-N C I 0% 1 1 0
T.R.Chlor.AL 17.0 1 0% I 1 N
Pollutant
ALLOWABLE PRDCT'D PRDCT'D PRDCT'D MONITOR/LIMIT I--ADTN'L RECMMDTN'S--
Effluent Effluent Effluent Instream 1 Recomm'd
Conc. using using Conc. Based on Based on Based on 1 FREQUENCY INSTREAM
Allowable CHRONIC ACTUAL PERMIT using ACTUAL PERMITTED OBSERVED 1 Eff. Mon. Monitor.
Load Criteria Influent Influent OBSERVED Influent Influent Effluent 1 based on Recomm'd ?
(#/d) (ug/1) (ug/1) (ug/1) (ug/1) Loading Loading Data 1 OBSERVED (YES/NO)
Cadmium S 1 0.61 7.032 0.651 3.368 631.945 Monitor Limit Limit 1 NCAC YES 1 A
Chromium S 1 5.12 175.806 4.176 73.415 21.330 Monitor Limit Limit 1 NCAC NO 1 N
Copper AL 1 0.96 24.613 9.244 46.474 46.358 Monitor Monitor Monitor 1 Weekly YES 1 A
Nickel S 1 3.18 309.419 8.206 66.792 112.339 Monitor Limit Limit 1 NCAC YES 1 L
Lead S 1 3.24 87.903 24.208 22.928 82.193 Limit Limit Limit 1 NCAC YES 1 Y
Zinc AL 1 5.35 175.806 57.963 133.612 68.826 .Monitor Monitor Monitor 1 NCAC YES 1 S
Cyanide S 1 0.30 17.581 15.533 0.000 1.422 Limit Limit I NCAC NO 1 I
Aercury S 1 0.00 0.042 0.000 0.000 0.057 L Limit 1 NCAC YES 1 S
Silver AL 1 0.00 0.211 0.000 0.000 83.046 Monitor 1 Weekly YES
Selenium S I 0.12 17.581 0.000 0.000 14.220 C,-Limit 1 NCAC YES 1 R
.. Arsenic - S 1 1.23 175.806 0.000 0.000 2.844 Monitor 1 NCAC NO 1 E
Phenols S 1 0.000 395.699 561.275 0.000 Limit Limit 1 I S
NH3-N C 1 0.000 0.000 1 1 U
T.R.Chlor.AL 1 59.774 0.000 1 1 L
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DIVISION OF ENVIRONMENTAL MANAGEMENT
September 25, 1990
MEMORANDUM
TO: Larry Coble, Regional Supervisor
Winston-Salem Regional Office
FROM:
Betsy Johnson
Technical Support Branch
THROUGH: Carla Sanderson
Trevor Clements2G
SUBJECT:
Instream Assessment for the City of Yadkinville
NPDES Permit No. NC0020338
Yadkin County
SOC Case No. 90-58
Summary and Recommendations
Technical Support has completed an instream assessment for the City of
Yadkinville. The City has requested an SOC because their facility is out of
compliance with its metals limits. The City would like to replace the metals
limits with monitoring only for the duration of the SOC while they relocate
their discharge from Haw Branch to North Deep Creek. In addition, the City
would like permission to add on 0.1 MGD of wasteflow under the SOC.
EMC criteria state that no industrial sources should be added under an Order.
Therefore, it is recommended that this SOC be limited to domestic waste
additions only and that milestones be incorporated to ensure compliance with the
metals limits. The attached pretreatment staff recommendations should be
incorporated with the Order. These actions will help the City to better manage
their facility to remain in compliance with their chemical specific limits.
Rather than drop the metals limits for the SOC period, interim metals limits for
the duration of the SOC are recommended. The following interim limits are based
on the instream waste concentration at the proposed outfall relocation site:
Since relocation of
compliance, it makes
must also be met at
Cadmium
Chromium
Lead
Cyanide
/461(e 1
the outfall is
sense for them
7 ug/1
175 ug/1
88 ug/1 —1;,„y &tou�ry 'AP "Cie d
18 ug/1 /' `7 "' ` VL4/c o
309 u9(1
what the Town has chosen to do to come into
to remain in compliance with the limits that
the proposed North Deep Creek site.
by P
Also, the City must receive a modification of its NPDES permit before relocation
of the discharge. A Level-B analysis was performed to assess the impact of the
existing limits on the North Deep Creek. The existing limits (BOD5 = 30 mg/1,
NH3-N = 16, and DO = 5 mg/1) are adequate to protect the DO standard. However,
the recommended ammonia concentrations to protect against toxicity are 3 mg/1 in
summer and 12 mg/1 in winter. To avoid ammonia toxicity, the above ammonia
levels should be met.

In addition to the above limits for Cadmium, Chromium, Lead, and Cyanide,
monitoring will be required for Nickel, Copper, and Zinc. Toxicity at the new
site will be evaluated at 28%. These limits will not be final until the NPDES
permit is modified.
Backaround I formation
The City of adkinville WWTP currently discharges into the Haw
"C" stream. Haw Branch drains approximately 1.42 square miles
site. The U GS estimates the following flows at the discharge
= 0.2 cfs, winter 7Q10 = 0.4 cfs, and average flow = 1.6 cfs.
moving with a stream bed gradient of 40 feet per mile.
Branch, a class
at the discharge
site: summer 7Q10
The creek is fast
The City of Yadkinville recently completed an upgrade of its facility from 0.6
to 1.0 MGD. Prior to the upgrade, the City was out of compliance with its
permit limits and failing its toxicity tests. Since April 1990, Yadkinville's
treatment has greatly improved; however, toxicity is still a problem. The 1990
NPDES permit renewal for the City of Yadkinville contained new metals limits
based on the City's pretreatment program. The City does not feel it can meet
the new metals limits and/or toxicity requirement at the Haw Branch site.
The City ofCadkinville WWTP proposes to discharge into North Deep Creek, a
class "C" stream. North Deep Creek drains approximately 35.9 square miles at
the discharge site. The USGS estimates the following flows at the discharge
site: summer 7Q10 = 3.9 cfs, winter 7Q10 = 10 cfs, and average flow = 39 cfs.
The creek is slower moving than Haw Branch with a stream bed gradient of 9.1
feet per mile.
Dis
HAW BRANCH:
The model wa- run with the existing effluent limits (BOD5 = 30 mg/1, NH3-N =
16 mg/1, and DO = 5 mg/1) at the pre-SOC flow (0.427 MGD). The GODS and NH3-N
parameters were input to the model as CBOD and NBOD using multipliers of 2.0 for
BOD5 and 4.5 for NH3-N (see Table 1).. When these effluent characteristics were
input to the model, the predicted DO sag was 4.51 mg/1 at milepoint 1.3 (see
Table 2) .
The model wa then run with the existing effluent limits (BOD5 - 30 mg/1, NH3-N
16 mg/1, D = 5 mg/1) at the SOC flow (0.527 MGD). Level-B modeling analysis
predicted th t the 67 (b) criteria will be met with the additional flow. The
requested fl w aftd existing limits will cause a DO sag of 4.29 mg/1 at milepoint
1.3, a decrease .of 0.28 mg/l.
NORTH DEEP CREEK:
The model was run with existing effluent limits and design flow (1.0 MGD) to
determine the impact of a discharge to North Deep Creek. The model predicts
that the exiting limits will protect the dissolved oxygen standard. The model
predicts a DQ sag of 5.22 mg/1 at milepoint 6.0.

TABLE 1. INSTREAM ASSESSMENT MODEL INPUT SUMMARY FOR THE CITY OF YADKINVILLE.
Headwater Co
Wasteflow Assumptions
Design Capacity 1.0 MGD
Pre-SOC 0.427 MGD
Additional SOC Flow Requested +0.1 MGD
SOC Flow 0.527 MGD
Model Input Summary
ditions (summer) :
7Q10 (c s) 3.9
Qavg (offs) 39
Design emperature 25
(degree Celsius)
CBOD (mg/1) 2.0
NBOD (m /1) 1.0
DO (mg/) 7.44
Wastewater Inputs:
Flows
Pr -SOC Flow
(a erage. flow)
Po-t-SOC Flow
(n-w tie -on)
CBOD (2 0 * 30 mg/1 SODS)
NBOD (4 5 * 16 mg/1 NH3-N)
0.427 MGD
0.527 MGD
60 mg/1
72 mg/1
TABLE 2. IN TREAM ASSESSMENT MODEL OUTPUT SUMMARY FOR THE CITY OF YADKINVILLE.
Limits:
Summer Model Results
-soc soc
Wasteflow = 0.427 MGD Wasteflow = 0.527 MGD
BO'5 = 30 mg/1 BOD5 = 30 mg/1
NH -N = 16 mg/1 NH3-N = 16 mg/1
DO = 5 mg/1 DO = 5 mg/1
DO Net Distance Net
Min. Change <5 mg/1 DO Change
(mg/1) (mg/1) (mi) (mi)
Pre-SOC 4.51 na 0.25 na
SOC 4.29 0.28 0.35 0.1
Relocation 5.22 na 0.0 na

DIVISION OF ENVIRONMENTAL MANAGEMENT
MEMO
To:
From:
Subject:
As per yo
Town of Y
pretreatm
recommend
1.
spec
(HWA
imme
moni
September 21, 1990
ANDUM
Trevor Clements
Doug Finan k
Pretreatment Language for the Yadkinville SOC
✓ request, the pretreatment staff has reviewed the
dkinville's current status regarding their
nt program and below is the pretreatment language
d for inclusion in paragraph 2 of Yadkinville's SOC:
Submit a plan for a monitoring program to collect site
fic data needed to complete a headworks analysis
. This program shall cover the data needed to
iately update the City's HWA as well as the long term
oring needed for future HWA updates.
2. Revise the monitoring program (based on DEM comments
rece ved within 45 days of monitoring program submission).
3. Implement the monitoring program as revised based on
DEM omments.
4.
of t
Head
5.
sewe
l im i
6.
mane
After implementation of the "Immediate Update" portion
e long term monitoring program, conduct and submit a
orks analysis (HWA) for DEM approval.
Review the results of the HWA and modify the City's
use ordinance (SUO) limits and pretreatment permit
s as necessary.
Develop and submit to DEM for approval an enforcement
ement response plan (ERP).
7. Revise the ERP (based on DEM comments received within
45 d:ys of ERP submission).
8.
Implement the ERP as revised based on DEM comments.
9. Modify the City's SUO as necessary to allow for
implementation of the ERP.
In additi
paragraph
proposing
addition
of draft
proposed ffective dates.of October 1, 1990.
proposed imits pages are attached.
n to including the above conditions in paragraph 2,
1(c) should be modified to show that the Town is
to add 150,000 GPD of industrial wastewater in
o the 100,000 GPD domestic. This is based on a review
retreatment permits submitted by the Town with
Copies
of the
If you have any questions on this matter or require any further
inforntatir, please let me know.

B. (1). EFFLUENT LIMITS AND MONITORING REQUIREMENTS - Final
ve immediately and lasting until the expiration of this permit, the
ee is authorized to discharge from pipe 01. Parameter and prohibitions
ited below shall be governed by the Town Sewer Use Ordinance. This
ge shall be limited and monitored as specified below:
Effect
permit
not li
discha
Limite
Parame
er
Flow
BOD
COD
Suspen ed Solids
Temper ture
Oil & rease
Cadmiuu
Chromi
Copper
Lead
Nickel
Zinc
Phenol
Effluent Limitations in lbs.
unless otherwise noted
Daily
Maximum
C).125 MGD
300.0
1251.
250.
104°
50.0
.07
.45
.38
.12
.24
.7
1.0
The pH shall not be less than 6.0 or greater than
be monitored twice per month using grab samples.
Sample
Type
meter
composite
composite
composite
grab
grab
composite
composite
composite
composite
composite
composite
grab
9.0 standard
Monitoring
Frequency
continuous
2/month
2/month
2/month
2/month
2/month
2/month
2/month
2/month
2/month
2/month
2/month
2/month
units and shall

B.
(1). EFFLUENT LIMITS AND MONITORING REQUIREMENTS - Final
Effective immediately and lasting until the expiration of this permit, the
permittee is authorized to discharge from pipe 01. Parameter and prohibitions
not limited below shall be governed by the Town Sewer Use Ordinance. This
discharge shall be limited and monitored as specified below:
Effluent Limitations in Lbs.
unless otherwise noted
Sample Monitoring
Limited Daily p Fre uenc
Parameter Maximum Type q y
Flow .250 Meter continuous
BOD 1040. composite 2/month
COD 3500. composite 2/month
Suspended Solids 350. composite 2/month
104° grab 2/month
Temperature Oil & Grease 200. grab 2/month
Cadmium .07 composite 2/month
Chromium .63 composite 2/month
Copper .42 composite 2/month
Lead .21 composite 2/month
Nickel .11 composite 2/month
.6 composite 2/month
Zinc Phenols 1.0 grab 2/month
The pH shall not be less than 6.0 or greater than 9.0 standard units and
shall be monitored twice per month using grap samples.

Division of Environmental Management
September 12, 1990
MEMORANDUM
To: Steve Mauney
Through: Larry Ausley
Ken Eagleson
From: Mau Matthews In
Subject: Yadkinville WWTP, NPDES No. NC0020338
Special Orde By Consent
This office has reviewed a draft SOC for the subject facility. The monthly "monitoring only" requirement applied is appropriate
and the usual requiremen for such a situation. However, there is no mention of identification and elimination of sources of
observed toxicity. Based on conversations with Winston Salem Regional Office personnel, it seems the town believes that the
relocation of the discharge resulting in a larger dilution of the effluent in the receiving stream will allow the facility to meet its
whole effluent toxicity limit. Toxicity testing meant to verify this speculation has been scheduled, but no results are yet available.
Regardless of the results of these tests, it is in the town's best interest to identify current sources of toxicity. Identification of these
sources will eliminate potbntial problems from them in the future as well as give the town a basis from which to address any
subsequent toxicity problems from other sources.
Please find attached an appropriate recommendation form for monthly chronic pass/fail monitoring.
cc: Jim Johnston, WSR
v-Trevor Clements
t;,
SVp18199°

A
10/89
Facility Name Yadkinville WWTP Permit # NC0020338
HRONIC TOXICITY MONITORING REQUIREMENT (MONTHLY)
The permitte shall conduct chronic toxicity tests using test procedures outlined in:
1.) The Nort Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Pr edure - Revised *September 1989) or subsequent versions.
The effluent concentration defined as treatment two in the North Carolina procedure document is
$2%. The permit holder shall perform monthly using this procedure to establish compliance with
the permit condition. The first test will be performed within thirty days from issuance of this
permit. 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, 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 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 t st data from this monitoring requirement or tests performed by the North Carolina
Division of E vironmental Management indicate potential impacts to the receiving stream, this
permit may b re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Fail a to achieve test conditions as specified in the cited document, such as minimum
control organ sm survival and appropriate environmental controls, shall constitute an invalid test
and will req ' e immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test r sults will constitute noncompliance with monitoring requirements.
7Q10 Q.2 cfs
Permitted Flow MGD Recommended by:
IWC% 88.57
Basin & Sub -basin 030702
Receiving Stream Haw Branch -1 a- -17:
County Yadkin Date ; o
**Chronic Toxicity (Cerio) Monitoring at 89%, See Part , Condition

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re LA.0 371-
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39

01/01/80 ver 3.1
Facility:
NPDES Permit No.:
Status (E, P, or M):
Permitted Flow:
Actual Average Flow:
Subbasin:
Receiving Stream:
Stream Classification:
7Q10:
Pollutant
Yadkinville WWTP
NC0020338
E
1.00 mgd
0.4270 mgd
"030702
NORTH DEEP CREEK
C
3.90 cfs
IWC: 28.44 %
Stn'd / Bkg 1 Removal Domestic
AL Conc. 1 Eff.
(ug/1) (ug/1) 1 %
Cadmium
Chromium
Copper
Nickel
Lead
Zinc
Cyanide
Mercury
Silver
Selenium
Arsenic
Phenols
NH3-N
S 2.0
S 50.0
AL 7.0
S 88.0
S 25.0
AL 50.0
S 5.0
S 0.012
AL 0.060
S 5.0
S 50.0
S NA
C
T.R.Chlor.AL 17.0
Pollutant
Cadmium
Chromium
Copper
Nickel
Lead
Zinc
Cyanide
Mercury
Silver
Selenium
Arsenic
Phenols
NH3-N
S
S
AL
S
S
AL
S
S
AL
S
S
S
C
T.R.Chlor.AL
Allowable
Load
(#/d)
92%
76%
82%
32%
81%
77%
59%
0%
0%
0%
0%
0%
0%
0%
ALLOWABLE
Effluent
Conc.
CHRONIC
Criteria
(ug/1)
TOXICS
REVIEW \}
(lit/ /J VIQ r � c�.� .a t„�- q z i / e(0 )
- IoGtc 5-
!,^o,)S-,tt
I PRETREATMENT DATA 1----EFLLUENT DATA----
1 ACTUAL
1 Ind. +
1 Domestic
Act.Ind. Total Industrial Total 1 Effluent Criteria
Load Load Load Load Load 1 Conc.
(#/d) (#/d) (#/d) (#/d) (#/d) 1 (ug/1)
PERMITTED]
Ind. + 1 FREQUENCY
PERMITTED Domestic 1 OBSERVED of Chronic
0.01 0.019 0.029 0.14 0.150
0.01 0.052 0.062 1.08 1.090
0.12 0.063 0.183 0.80 0.920
0.02 0.023 0.043 0.33 0.350
0.08 0.374 0.454 0.35 0.430
0.77 0.128 0.898 1.30 2.070
0.13 0.005 0.135
1.410 1.410
PRDCT'D PRDCT'D PRDCT'D
Effluent Effluent Instream
using using Conc. Based on Based on
ACTUAL PERMIT using ACTUAL PERMITTED
Influent Influent OBSERVED Influent Influent
(ug/1) (ug/1) (ug/1) Loading Loading
2.00 2.000
MONITOR/LIMIT
0.61 7.032 0.651 3.368 0.000 Monitor Limit
5.12 175.806 4.176 73.415 0.000 Monitor Limit
0.96 24.613 9.244 46.474 0.000 Monitor Monitor
3.18 309.419 8.206 66.792 0.000 Monitor Limit
3.24 87.903 24.208 22.928 0.000 Limit Limit
5.35 175.806 57.963 133.612 0.000 Monitor Monitor
0.30 17.581 15.533 0.000 0.000 Limit
0.00 0.042 0.000 0.000 0.000
0.00 0.211 0.000 0.000 0.000
0.12 17.581 0.000 0.000 0.000
1.23 175.806 0.000 0.000 0.000
0.000 395.699 561.275 0.000 Limit Limit
0.000 0.000
59.774 0.000
Based on
OBSERVED
Effluent
Data
Violations
(#vio/#sam)
I1
I N
I P
I U
1 T
S
E
C
T
I
0
N
1
-ADTN'L RECMMDTN'S--
Recomm'd
FREQUENCY INSTREAM
Eff. Mon. Monitor.
based on Recomm'd ?
OBSERVED (YES/NO)
A
N
A
L
Y
S
I
S
R
E
S
U
L
T
S

gov
c
0
d 7b0
7'(O
Sl
6eaetel,
r
Ca1cu 14tion S
goo- -
--)ao - -200 y y
zi 5-
641114111
1-
11•11111111111111111 1111111111111111M1111111111111111111111R
11111111111111111111111111111111111MMIIIIIMMIMMIll .
�D D
- 3
5- • 7 q

Mr. M. Da
MPDES
Dept. of
P. 0. Box
Raleigh,
Dear Sir:
Encl
the disch
to North
give me a
JC: jdh
Enclosure
TOWN OF YADKINVILLE
Post Office Drawer 816
Yadkinville, North Carolina 27055 — 0816
Telephone [phone]
August 29, 1990
le 0vercash, Supervisor
Permits Group
nvironment Health & Natural Resources
27687
C 27611-7687
sed is a application from the Town of Yadkinville to change
rge point of the effluent of the wastewater from Haw Branch
eep Creek. If you have any questions or comments please
call. j
Sinc ely,
erry =rlton
Town F ager
te, P— 'Y E D
SEP 04 )99O
PFRMI S g, #`W:!N 'c+?ifiu:
.
t,,tivED
SEP I 0 1990

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0020338
PERMITTEE NAME: Town of Yadkinville / Yadkinville WWTP
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 1.0 MGD
Domestic (% of Flow): 78 %
Industrial (% of Flow): 22 %
Comments:
RECEIVING STREAM:
Class: C
C, T '3 t�tc (C-40
1t9-37-`Ia��
Haw Branch
Sub -Basin: 03-07-02
Reference USGS Quad: C16NW (please attach)
County: Yadkin
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 10/31/90 Treatment Plant Class: Class II
Classification changes within three miles:
Requested by: Lula Harris
Date: 3/7/90
Prepared by: Date: y/.2 3 /tq v
Reviewed by: C'ai-t _ ,� ' Date / f
Modeler
Date Rec.
#
C.. 5--
31tz\9v
sz,«
Drainage ea (mil ) /y 4/ Avg. Streamflow (cfs): X.
7Q10 (cfs) 0, Winter 7Q10 (cfs) 0, 30Q2 (cfs) C ..
Toxicity Limits: IWC �/ %
Instream Monitoring:
Parameters 7P6) TQm0I
Upstream 'v
Downstream /
Acute/Chronic
Location0 �f u/05,eecp.--
Location //ali,, /V4�dh C 5' 157(6
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
30
3 C)
NH -N (mg/1)
3
%2
rnon; 472
D.O. (mg/1)
5-
5-
TSS (mg/1)
30
30
F. Col. (/100 ml)
DU
,70 C;
pH (SU)
G _ 9
6 `ri
Did ; rrh1Sp("`5lr )
/3
/s
1E 1 LS L t r1 tr'S
C w c_,,„- 11.4.4 kl ba.
c-.1 f c.ldi ,.,,,max
Cac1w«k, 07.3 Li11
1.P.aet c .B U31 I
i
CC.PpNr - .-nDK,'
0 •-tra,n:,u.wk, 56 1.1.5(I
(NI a., de J< (2 L.,f) I 1
71.1-c- wtont.-k-r
N;-kt 91 ,.,t,i I
Comments: Posy, h le c
( der- '� .:
r
kic l�y T Q.4,144or,6. kicaii -
F'LOl s.
•

t$
'ital
1 MILE
=EET
ST
n
40'
Pa
1).
--I 954
rove
• I -I••
O. MI. TO U.S. 421
MOCKSVILLE 17 MI.
QUADRANGLE LOCATION
_
II
. %) l`I
53200m E.
—947X
• INTERIOR -GEOLOGICAL SURVEY. WASHINGTON
Heavy-duty ...................
Medium -duty
{71U. S. Route O State Route
ROAD CLASSIFICATION
Light -duty
C 16
10'
w0l
0
3998Ooom.N_
36°07'30"
o -I967 80°37'30"
Unimproved dirt
YADKINVILLE, N. C.
N3607.5—W8037.5/7.5
1966
AMS 4856 I1 NW —SERIES V842
MASTER F,L
/1 -1 /

Wasteflow (mgd) :
BOD5 (mg/1) :
NH3N (mg/1):
DO (mg/1) :
TSS (mg/1) :
Fecal coliform (#/100m1):
pH (su) :
Oil and Grease (mg/1) :
Town of Yadkinville WWTP
NC0020338
78% Domestic/22% Industrial
Existing/Renewal
Haw Branch
C
030702
Yadkin
Winston-Salem
Lula Harris
3/7/90
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad: C16NW
RECOMMENDED EFFLUENT LIMITS
EXISTING
summer winter
1.000 1.000
30 30
16 monitor
5 5
30 30
1000 1000
6-9 6-9
15 15
PROPOSED METALS LIMITS: WQ f&4..ly vyt i rK.um-
Cadmium (ug/1) : 2.3 Nickel (ug/1) : 99
Chromium (ug/1) : 56 Lead (ug/1) : 28
Drainage
Summer
Winter
Average
Request No.: 5618
RECEIVED
N.C. Dept. NRCD
APR 11 "NO
area:
7Q10:
7Q10:
flow:
30Q2:
Winston-Salem
Regional Office
1.420 sq mi
0.20 cfs
0.40 cfs
1.60 cfs
0.50 cfs
PROPOSED
summer
1.000
30
16
5
30
200
6-9
15
winter
1.000
30
monitor
5
30
200
6-9
15
Cyanide (ug/1) 5.6
Toxicity Testing Req.: Chronic quarterly at 89%
MONITORING
Parameters: DO, Temp., Cond., Fecal Coliform
Upstream (Y/N): Y Location:500 ft upstream of 1ischarge
Downstream (Y/N): Y Location:Haw Branch at SR 15/0
COMMENT S
Currently operating under SOC. Facility received authorization to construct
February, 1989. Expansion to 1.0 MGD scheduled for completion
Currently discharging at 0.6 MGD; BOD5, TSS, and Oil & Grease violations.
Failing all toxicity tests. High instream fecal coliform levels.
Toxicity testing required since major facility; also possible ammonia
and chlorine toxicity. Monitor effluent for Copper and Zinc.
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
021)-dieS64cctiAstr7k-
RETURN TO TECHNICAL SUPPORT BY:
MAY 0 2 1990
Date: 3/aY/u
A z So nnA f-k)
4 /4 6
Date: 7
Date:
Date:

10/89
Facility Name G ,, J(in c, // 4, Z/7P Permit # /VCOCS 6 - 7 y
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 ,�'7 % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterly monitoring using this procedure to establish
compliance with the permit condition. The first test will be performed after thirty days from
issuance of this pen -nit during the months of -Woo.) t1e2 , 3 LLL vc . 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, 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 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 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.
NOfh: 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 cfs
Pertuted Flow /. O MGD
IWC% ?(7
Basin & Sub -basin 6 '3 - O 7 -6 a
Receiving Stream Ha,,' 73,-o„ rG,
Countyr/;,r,
Recommended by:
Date
/c)
**Chronic Toxicity (Ceriodaphnia) P/F at 7 %, JAN), APR, sloc,oc,7, See Part 3 , Condition. I .