NC0024406_Renewal w/ Modification_19960820

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From:
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North Carolina Department of Environment,
Health and Natural -Resources
% Printed on Recycled Paper

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OUTFALL 005
_
° OUTFALL 003 BELEWS LAKE
`� (EL.725)
r
�J DISCHARGE P � 0
in
TAILINGS POND }�
(EL.760) L�
BELEWS CREEK
STEAM STATION
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-
ROAD CLASSIFICATION
SCALE 1:24000
PRIMARY HIGHWAY LIGHT-DUTY ROAD. HARD OR
HARD SURFACE IMPROVED SURFACE
0 1 MILE
SECONDARY HIGHWAY
HARD SURFACE ® UNIMPROVED ROAD
0 7000 FEET
1 0 1 KILOMETER
Latitude 36°18'22" Longitude 80°04'50"
Map # B18SE Sub-basin 030201
CONTOUR INTERVAL 20 FEET
Stream Class C & WS-Z
Discharge Class 14 68 69 70
West a ews ree a ews a e
Receiving Stream & Dan River
QUAD LOCATION
•
%
Duke Power Company
N00024406
Stokes County
Design Q Variable Permit expires 1/31/02
Belews Creek Steam Plant

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
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility requested upstream monitoring be removed from permit. While we cannot concur with
this request, we recognize that two upstream monitoring locations are not necessary since they
generally portray the same data. We would request site 419 be retained as the upstream monitoring
location, but given the difficulties with theseg sites, (including vandalism of the equipment) we
would concur with site 405 if it has a better safety history.
The Annual Report submitted had numerous other requests:
• Deletion of sites: 423.31, 423.32, and 423.33 and 419.31, and 419.3
We concur with this request pending Region and ESB review. 'PC GjS!z d
• Water samples should be reduced from profile (0.3, 5, 10, 20 and 30 in (or bottom depth)) to
just surface and bottom samples. In-situ data should continue to be collected at 1 m intervals.
We concur with this request pei. ding Region and ESB review
Special Schedule Requirements and additional comments from Reviewers. ' Sr i 2
Recommended
Instream
Regional Supervisor:
Permits &
kiCl
RETURN TO TECHNICAL SUPPORT 4M
Date: s 19gd
Date: 10 (p
Date: Z
Date: /O
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6rst) iN its oru�iNio)
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Request # 851'A 'El\1E0
Duke Power Company
- Belews Creek Steam let art N
f `• of '�I '
NC0024406 - 001
.
Industrial - 100%
0 CT 2 1 1996
Existing
Renewal
Stream Characteristia! n ` n _ �, [��
Belews Lake
C
USGS #
Date: Regional OffiC8
03-02-01
Drainage Area (mi2):
Stokes
Summer 7Q10 (cfs): Lake
Winston - Salem
Winter 7Q10 (cfs):
Cabe
Average Flow (cfs):
8/19/96
30Q2 (cfs):
B 18 SE
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility requested upstream monitoring be removed from permit. While we cannot concur with
this request, we recognize that two upstream monitoring locations are not necessary since they
generally portray the same data. We would request site 419 be retained as the upstream monitoring
location, but given the difficulties with theseg sites, (including vandalism of the equipment) we
would concur with site 405 if it has a better safety history.
The Annual Report submitted had numerous other requests:
• Deletion of sites: 423.31, 423.32, and 423.33 and 419.31, and 419.3
We concur with this request pending Region and ESB review. 'PC GjS!z d
• Water samples should be reduced from profile (0.3, 5, 10, 20 and 30 in (or bottom depth)) to
just surface and bottom samples. In-situ data should continue to be collected at 1 m intervals.
We concur with this request pei. ding Region and ESB review
Special Schedule Requirements and additional comments from Reviewers. ' Sr i 2
Recommended
Instream
Regional Supervisor:
Permits &
kiCl
RETURN TO TECHNICAL SUPPORT 4M
Date: s 19gd
Date: 10 (p
Date: Z
Date: /O
�r,
—4;5
6rst) iN its oru�iNio)
P(Wr-
PArt&(V,G,ttaza Wklal-
c,vr) be dc17_-- LVh1ASk
W --Kc- 31ta 4/-1AZrZ .

PARAMETERS
Existing Limits:
Monthly Daily Measurement
Sample
Average Maximum Frequency
Type
Wasteflow (MGD): Daily
Pump Logs
Temperature °C (°F) (April - October): 35 (95) * Daily
Grab
Temperature °C (°F) (November - March): 35 (95) * Weekly
Grab
Temperature: ** Monthly
Grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Chlorination of the once through and auxiliary cooling water shall not be allowed at this facility.
Should Duke
Power wish to chlorinate its once through cooling water, a permit modification must be requested and
received prior
to commencing chlorination.
* Temperature is a maximum instantaneous limit measured one foot below the surface.
** Temperature at the downstream sampling point shall not exceed 89.6 OF during a discharge.
Recommended Limits:
Monthly Daily Measurement Sample
Average Maximum Frequency Type
Wasteflow (MGD): Daily Pump Logs
Temperature °C (°F) (April - October): 35 (95) * Daily Grab
Temperature °C (°F) (November - March): 35 (95) * Weekly Grab
Temperature: ** Monthly Grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Chlorination of the once through and auxiliary cooling water shall not be allowed at this facility. Should Duke
Power wish to chlorinate its once through cooling water, a permit modification must be requested and received prior
to commencing chlorination.
* Temperature is a maximum instantaneous limit measured one foot below the surface.
** Temperature at the downstream sampling point shall not exceed 89.6 OF during a discharge.
----------------------------------------------------------------------------------------
INSTREAM MONITORING REQUIREMENTS
Upstream Location: either site 405 or site 419
Downstream Location: at Dam
Parameters: temperature
----------------------------------------------------------------------------------------
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility dimonstrated the ability to meet the proposed new limits with existing treatment facilities?
Yes v No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes 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) (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? (Y or N) If yes, explain with attachments.

8510 pipe 001
8511 (A, B) pipe 003 & 005
Facility Name: Duke Power - Belews Creek Steam Station
NPDES No.: NCO024406
Type of Waste: 100 % Industrial
Facility Status: Existing
Permit Status: Renewal Stream Characteristic: 'DA&1 1KbJC-2
Receiving Stream: West Belews Lake & Dan River USGS # 02.0690.6200
Stream Classification: C & WS IV Date: 1987 est. 1996
Subbasin: 03-02-01 Drainage Area (mi2): 501 501
County: Stokes Summer 7Q10 (cfs): 24 80
Regional Office: Winston - Salem Winter 7Q10 (cfs): 100 160
Requestor: Cabe Average Flow (cfs): 576 576
Date of Request: 8 / 20 / 96 30Q2 (cfs): 120 195
Topo Quad: B 18 SE IWC (%): 33% 19%
1982: WLA for pipe 003 for both the Belews Lake and the Dan River discharge locations. Both selenium and arsenic were
limited using a 30Q2 and background concentrations. It was assumed for the Dan River discharge that levels of
both toxics would be in the intake water, therefore the limit accounted for background conditions, (both natural and
from accumulation in the lake). A monitoring plan for the Dan River through to Kerr Lake was also established.
1983: WLA for relocation of discharge 003 to Dan River with selenium limits, (arsenic not included). Letter outlining
additional requirements for Belews Lake monitoring program. Review of CP & L model analysis of discharge to
Hyco Lake. Engineering report for changes to system and relocation of outfall 003.
1985: Belews Lake Report - notes from meeting seem to indicate that data showing decreased fish variability, (catfish,
carp, etc predominate) but an accompanying lowering of selenium and arsenic deposition. Discharge from ashpond
blocked in May, 1985.
1989: WLA's for both 003 discharges and one for 002, (sanitary waste which ceased discharge in August, 1989). The 003
WLA's had limits based upon 40 CFR 423.12 and a limit for selenium, (based on mass balance and s7Q10) and
monitoring for arsenic. Toxicity test was also applied; 66% Chronic for Dan River and 100% Acute for Lake.
1992: 5 WLA's for various outfalls. Memorandum in file indicates that permit had a TSS variance which was inappropriate
yet applied in the 1970's and remained in the permit; it was deleted. Outfall 002 was reissued but has gone to spray
irrigation since that time. Outfall 003 was reissued w/ selenium limit and monitoring requirements for various other
parameters as well as toxicity test. Outfall 005 was included for possible water augmentation to lake levels and
outfall 006 was a metals cleaning discharge which has since been routed to outfall 003.
001
Instream Temperature Monitoring of Belews Lake
facility requested that upstream monitoring be dropped - while we cannot concur with this request, they do monitor two sites,
which are considered upstream, for temperature (site 405 and 419). One of these sites should suffice, (i.e. 405 - called 406
on the DMRs). It should be noted that the 405 upstream site is not the representative of what upstream lake conditions would
be - it is a riverine arm of the lake and is very twisting and a completely separate type of system than the lake. The Annual
Report monitoring will still require temperature at various locations and the data already submitted from these stations
portrays a very stable temperature stratification which takes place on annual basis, (this is well outlined in the current report).
I've also attached some graphs of the data at various depths and stratification of the temperature is very evident from these
graphs, (attached).
Instream Monitoring (for annual report - not required by permit)
General premise of attached report is that lake is making a come -back from high selenium, (and other toxics) concentrations.
(note: green sunfish, crappie, carp and catfish could handle high selenium concentrations and therefore predominated the
species - now with re-routing of discharge, largemouth bass, sunfish and others are making a come back)
Second major premise of report is that the higher levels of toxics exist in the sediment in the deeper areas of the lake; and by
default, potentially higher levels of dissolved toxics in the water column. I have graphed some of the sediment data based
upon this premise, (i.e. two sets of graphs; one for the 2 - 7 meter depths and one for the deeper sites). While the levels
graphed do indicate higher concentrations for the deeper waters, no significant trends seem to be visible from this data. Only
about six years of data for many sites exist and this may not be enough to show any trend as the period of sampling is either
annual or bi-annual. Also, I assumed that these 'mean' values were representative, although many of the standard deviations
seem to be rather high for these means to be an acceptable representation of the area sampled.
I received two disks of instream, (water chemistry) data form this facility. Generally, the arsenic and selenium concentrations
have leveled off to less -than -detection since the facility removed the 003 discharge to the lake. I have graphed this data,
(attached) with the stations separated into two periods: 1980 - 1988 and 1989 - 1994. It is important to note the changes in
scale between the two periods as the earlier dataset, (1980 - 1988) had much higher levels of arsenic and selenium than the
latter years. Occasionally there is a spike in the latter dataset, (1989 - 1994), but this is small and could be attributed to
either actual concentrations or procedural error, (conversation with facility). Generally, the levels of arsenic and selenium
during the 1989 - 1994 years is either minimal or below detection. I will confer with ESB as to their assessment of this data.

V 1%.
Requested changes from facility, (none of these sites are required in the permit and have been monitored by the facility under
agreement with DEM):
• Surface water sampling should continue at the same frequency (twice a year) and parameters analyzed should remain
the same (in-situ, nutrients, elemental, alkalinity and turbidity).
• In-situ data should continue to be collected at 1 m intervals.
• Water same/es should be reduced from profile (0 .3, 5 10 20 and 30 m (or bottom depth)) to just surface and bottom
samples.
• Sediment sampling should be reduced with the elimination of 5 locations: 423.31, 423.32, and 423.33 in the main -lake
and 419.31 and 419.32 in the upper mid -lake. The upper mid -lake locations (419.31 and 419.32) are very rocky and it is
very difficult to collect good samples.
• Sampling at the other three main -lake locations (422.0, 417.1, and 417.2) and the control location (405.0) should be
continued in the manner it is currently being conducted, with 5 replicates collected in May of each year. Those main -lake
locations are each at different depths and are considered representative of the lake. .
• Temperature monitoring be done just at dam - meeting state standard - and the two upstream locations be dropped -
lake itself is a cooling pond (built for that)
003
Flows for this outfall to the Dan River were originally derived from a USGS 1987 estimate, (attached). These estimates conflict with a
draft flow profile document submitted by USGS: 1987 s7Q10 of 24 cfs versus 1996 s7Q10 of 80 cfs. After talking with Juan Mangles,
(Modeler II for this river basin) it was determined that the flow profile estimates would be better flow statistics since the USGS estimates
from the 1980's are somewhat suspect.
['have attached toxic spreadsheets using both the 1987 and 1996 flow estimates as well as one sheet using the average flow from 1992
of 8.27 mgd, (compared with the current average flow of 11.8 mgd).
Flow estimates
1461 -
#892
1996
Arsenic:
Max. Pred Cw
92
92
13 out of 13 samples above detection
Allowable Cw
116
269
maximum value of 23 µg/I in July, 1996
Barium:
Max. Pred Cw
0.112
0.112
13 out of 13 samples above detection
Allowable Cw
2.3
5.4
maximum value of 0.093 mg/I in July, 1996
Copper:
Max. Pred Cw
0.0
0.0
13 out of 13 samples less than detection of 0.005 mg/I
Allowable Cw
1.0
1.0
Fluoride
Max. Pred Cw
1.5
1.5
12 out of 13 samples above detection
Allowable Cw
4.2
9.7
maximum value of 0.64 mg/I in July, 1996
Iron:
Max. Pred Cw
0.682
0.682
13 out of 13 samples above detection
Allowable Cw
1.0
1.0
maximum value of 0.101 mg/I in December, 1995
Selenium:
Max. Pred Cw
34
34
25 out of 25 samples above detection
Allowable Cw
12
27
maximum value of 20 lag/I in July, 1996
Sulfates:
Max. Pred Cw
7,332
7,332
13 out of 13 samples above detection
Allowable Cw
578
1,343
maximum value of 797 mg/I in September, 1995
x Waste Water Treatment Plant NC00

I
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:
ro!:��`9�.F rr
FACT SHEET FOR WASTELOAD ALLOCATION OCT 2. 1 19%
:l'in Siuii f=.'r.iC M
Duke Power Company -
Request# 8511; �aCi1�� ce
Belews Creek Steam Electric' 9p
NC0024406 - 003-
-----
Industrial - 100%
Existing
Renewal with modification
Stream Characteristic:
Dan River
USGS #
WS - IV
Date:
03-02-01
Drainage Area (mi2):
501
Stokes
Summer 7Q10 (cfs):
80
Winston - Salem
Winter 7Q10 (cfs):
160
Cabe
Average Flow (cfs):
576
8/19/96
30Q2 (cfs):
195
B 18 SE
IWC (%):
19%.
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Flow estimate change due updated flow profile of Roanoke River basin by USGS and suspect
flow estimates from 1987. Please note that this will effect the toxicity test effluent percentage.
All other requirments are the same with a change in the selenium limit and a deletion of the barium
monitoring requirement.
Note: instream monitoring requirements are not stipulated in this permit, but have been coordinated
through other agreements. This area of the Dan River is ideal for the formation of an association of
dischargers to perform instream monitoring. It has been suggested that Duke Power take the lead
for this coordinated monitoring as they are already familiar with the Dan River and have a history
of very good instream monitoring compliance. Request Region input as to whether this and other
facilities in area would be interested in forming such an association.
Pipe 005 has ceased discharge and been sealed off.
le Requirements and additional comments
Recommended by-.
Farrell
Instream Assessmen
Regional S
Permits & Engineering:
W S2 d
Date: ii ocrorami, 0*16
Date:
Date:
Date:
RETURN TO TECHNICAL SUPPORT BY: NOV 15 19%

PARAMETERS
Existing Limits:
Sample Type
Pump Logs or Similar
Reading
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.
The coal pile runoff and low volume waste shall be discharged into the settling pond.
Chronic Toxicity (Ceriodaphnia) P/F at 33 % February, May, August, and November.
Recommended Limits:
Monthly Daily Measurement Frequency
Average Maximum
Wasteflow (MGD): Weekly
Oil & Grease (mg/1): -
Monthly
Daily
Measurement Frequency
-TSS (mg/1): - -
Average
Maximum
2 / Monthly
Wasteflow (MGD):
Monitor
Weekly
Oil & Grease (mg/1):
9.09
12.12
2 / Monthly
TSS (mg/1):
18.18
60.6
2 / Monthly
Total Arsenic (µg/1):
Monitor
Monthly
Total Selenium (µg/1):
23.0
2 / Monthly
Total Nitrogen (mg/1):
Monitor
Monthly
Total Phosphorus (mg/1):
Monitor
Monthly
pH (SU):
6-9
2 / Monthly
Sulfates (mg/1):
Monitor
Monthly
Monthly
Barium (mg/1):
Monitor
Monthly
Monthly
Fluoride (mg/1):
Monitor
Monthly
Total Copper (mg/1):
1.0
1.0
Monthly
Total Iron (mg/1):
1.0
1.0
Monthly
Sample Type
Pump Logs or Similar
Reading
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.
The coal pile runoff and low volume waste shall be discharged into the settling pond.
Chronic Toxicity (Ceriodaphnia) P/F at 33 % February, May, August, and November.
Recommended Limits:
Monthly Daily Measurement Frequency
Average Maximum
Wasteflow (MGD): Weekly
Oil & Grease (mg/1): -
- 9.09
12.12
2 / Monthly
-TSS (mg/1): - -
18.18
60.6
2 / Monthly
,/Total Arsenic (µg/1): —
Monitor
Monthly
-VIbtal Selenium (µg/1)
27.0
2 / Monthly
Total Nitrogen (mg/1):
Monitor
Monthly
,Total Phosphorus (mg/1):
Monitor
Monthly
�/pH (SU):
6-9
2 / Monthly
• Sulfates (mg/1): ----
Monitor
Monthly
Barium (mg/1):
Not Required
v, Fluoride (mg/1): _ _
— Monitor
Monthly
Total Copper (mg/1):
1.0
1.0
Monthly
Total Iron (mg/1):
1.0
1.0
Monthly
Sample Type
Pump Logs or Similar
Reading
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
There shall be no discharge of floating solids or visible foam in other than trace amounts.
The coal pile runoff and low volume waste shall be discharged into the settling pond.
Chronic Toxicity (Ceriodaphnia) P/F at 19 % February, May, August, and November.
_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.

i
Arsenic:
Max. Pred Cw
Allowable Cw
Barium:
Max. Pred Cw
Allowable Cw
Copper:
Max. Pred Cw
Allowable Cw
Fluoride
Max. Pred Cw
Allowable Cw
Iron:
Max. Pred Cw
Allowable Cw
Selenium:
Max. Pred Cw
Allowable Cw
Sulfates:
Max. Pred Cw
Allowable Cw
Upstream Location:
Downstream Location:
Parameters:
92 13 out of 13 samples above detection
269 maximum value of 23 µg/1 in July, 1996
0.112 13 out of 13 samples above detection
5.4 maximum value of 0.093 mg/l in July, 1996
0.0 13 out of 13 samples less than detection of 0.005 mg/1
1.0
1.5 12 out of 13 samples above detection
9.7 maximum value of 0.64 mg/1 in July, 1996
0.682 13 out of 13 samples above detection
1.0 maximum value of 0.101 mg/l in December, 1995
34 25 out of 25 samples above detection
27 maximum value of 20 µg/1 in July, 1996
7,332 13 out of 13 samples above detection
1,343 maximum value of 797 mg/1 in September, 1995
INSTREAM MONITORING REQUIREMENTS
not required - exists as seperate report document
not required - exists as seperate report document
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 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) (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? (Y or N) If yes, explain with attachments.

t
Facility Name Duke Power - Belews Creek Permit # NC0024406 Pipe # 003
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 ..9 % (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 the effective date of this permit
during the months of Feb., May, Aug., and Nov. 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
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 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 80 cfs
Permitted Flow variable MGD
IWC 49. %
Basin & Sub -basin 03-02-01
Receiving Stream Dan River
County Stokes
QCL PIF Version 9191
Farrell
Facility Name Duke Power - Belews Creek Permit # NC0024406 Pipe # 003
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 ..9 % (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 the effective date of this permit
during the months of Feb., May, Aug., and Nov. 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
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 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 80 cfs
Permitted Flow variable MGD
IWC 49. %
Basin & Sub -basin 03-02-01
Receiving Stream Dan River
County Stokes
QCL PIF Version 9191
Farrell

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