NC0038377_Fact Sheet for Wastload Allocation_19970202

FACT SHEET FOR WASTELOAD ALLOCATION
FEB 2
ko
Lake —�
xa•
Cn
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
r�
The ash pond receives ash transport water, coal pile runoff, stormwater runoff, cooling tower blowdoWn,
and various low-volume wastes such as boiler blowdown, oily waste treatment, wastes/backwash from
the water treatment processes, plant area wash down water, and equipment heat exchanger water. The
sewage treatment plant effluent is also routed to the ash pond.
Part III, Section E. of the permit requires a Selenium Study be completed and submitted. Neither P & E
nor the Instream Assessment Unit has a copy of this report to date. A call was made to the facility and it is
expected that a copy of this report will be submitted in the near future. Re -issuance of the permit should
not be contingent upon submission of this report.
Part III, Section F of the permit requires an ongoing study of Crutchfield Branch. The ash pond was built
such that the headwaters of Crutchfield Branch might be affected by the leaching of metals or other
toxicants through the berm into the receiving stream. Samples taken in December, 1995 indicated very
elevated levels of copper, arsenic, and selenium. Yet all samples prior to and after this event indicted
below detection levels for these parameters. Therefore it is assumed that these samples were anomalous
and not representative of the condition of this waterbody. Request Region input.
Special Schedule Requirements and additional comments from Reviewers:
Recommended
Instream Assessment:
Regional Supervisor:
Permits & Engineerii
RETURN TO TECHNICAL SUPPORT BY:
Date: i y
Date:
Date: 14
7
Date:
Request # 853'
Facility Name:
CP & L - Mayo Steam & Electric Generating Plant
NPDES No.:
NC0038377 - 002
Type of Waste:
Industrial - 99.8 %
Domestic - 0.2 %
Facility Status:
Existing
Permit Status:
Renewal
Stream Characteristic:
Receiving Stream:
Mayo Reservior
USGS #
Stream Classification:
C
Date:
Subbasin:
03-02-05
Drainage Area (mi2):
County:
Person
Summer 7Q10 (cfs):
Regional Office:
Raleigh
Winter 7Q10 (cfs):
Requestor:
Myhra
Average Flow (cfs):
Date of Request:
1/14/97
30Q2 (cfs):
Topo Quad:
A 23 SW
IWC (%):
FEB 2
ko
Lake —�
xa•
Cn
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
r�
The ash pond receives ash transport water, coal pile runoff, stormwater runoff, cooling tower blowdoWn,
and various low-volume wastes such as boiler blowdown, oily waste treatment, wastes/backwash from
the water treatment processes, plant area wash down water, and equipment heat exchanger water. The
sewage treatment plant effluent is also routed to the ash pond.
Part III, Section E. of the permit requires a Selenium Study be completed and submitted. Neither P & E
nor the Instream Assessment Unit has a copy of this report to date. A call was made to the facility and it is
expected that a copy of this report will be submitted in the near future. Re -issuance of the permit should
not be contingent upon submission of this report.
Part III, Section F of the permit requires an ongoing study of Crutchfield Branch. The ash pond was built
such that the headwaters of Crutchfield Branch might be affected by the leaching of metals or other
toxicants through the berm into the receiving stream. Samples taken in December, 1995 indicated very
elevated levels of copper, arsenic, and selenium. Yet all samples prior to and after this event indicted
below detection levels for these parameters. Therefore it is assumed that these samples were anomalous
and not representative of the condition of this waterbody. Request Region input.
Special Schedule Requirements and additional comments from Reviewers:
Recommended
Instream Assessment:
Regional Supervisor:
Permits & Engineerii
RETURN TO TECHNICAL SUPPORT BY:
Date: i y
Date:
Date: 14
7
Date:

PARAMETERS
Existing Limits:
Monthly Daily
Measurement
Sample
Average Maximum
Frequency
Type
Average
Maximum
Pump Logs or
Wasteflow (mgd):
Weekly
Similar Reading
Oil & Grease (mg/1): 15 20
2 / month
Grab
Total Suspended Solids (mg/1): 30 100
2 / month
Grab
Total Selenium (lbs/d): 3.8
2 / month
Grab
pH (Si): 6 - 9
2 / month
Grab
Acute (Fathead Minnow 24 hr) Toxicity Test - No Significant Mortality at 90%
Total Suspended Solids (mg/1):
30
February, May, August, and November
2 / month
Grab
Effluent sample location prior to mixing with other waste streams.
No chemical metal cleaning waste may be discharged to
the ash pond.
Grab
There shall be no discharge of polychlorinated biphenyl compounds such as those commonly used for transformer fluid.
There shall be no discharge of floating solids or visible foam in other than trace amounts outside an area of 5 meters
from the discharge.
Recommended Limits:
* These metals were -monitored during the previous permit period . Althqugh no level.of 'allAwablen can currently be
estab'Tisfieil`fo the se`m`etals; b5nti-n—@Wmomtoiing`sliouId-be requited dueto their presence in the effluent until an
Allowable' level can be determined.
Effluent sample location prior to mixing with other waste streams.
No chemical metal cleaning waste may be discharged to the ash pond.
There shall be no discharge of polychlorinated biphenyl compounds such as those commonly used for transformer fluid
There shall be no discharge of floating solids or visible foam in other than trace amounts outside an area of 5 meters
from the discharge.
Monthly
Daily
Measurement
Sample
Average
Maximum
Frequency
Type
Pump Logs or
Wasteflow (mgd):
Weekly
Similar Reading
Oil & Grease (mg/1):
15
20
2 / month
Grab
Total Suspended Solids (mg/1):
30
100
2 / month
Grab
Total Selenium (lbs/d):
3.8
2 / month
Grab
pH (Si):
6 - 9
2 / month
Grab
Arsenic (µg/1):
monitor *
Quarterly
Grab
Copper (µg/1)
monitor *
Quarterly
Grab
Iron (mg/1)-
monitor *
Quarterly
Grab
Acute (Fathead Minnow 24 hr) Toxicity Test - No Significant Mortality at 90%
February, May, August, and November
* These metals were -monitored during the previous permit period . Althqugh no level.of 'allAwablen can currently be
estab'Tisfieil`fo the se`m`etals; b5nti-n—@Wmomtoiing`sliouId-be requited dueto their presence in the effluent until an
Allowable' level can be determined.
Effluent sample location prior to mixing with other waste streams.
No chemical metal cleaning waste may be discharged to the ash pond.
There shall be no discharge of polychlorinated biphenyl compounds such as those commonly used for transformer fluid
There shall be no discharge of floating solids or visible foam in other than trace amounts outside an area of 5 meters
from the discharge.

INS-IREAM MONITORING REQUIREMENTS
Upstream Location: not required
Downstream Location: not required
Parameters: 1
----------------- ------------------------------------------ --------------------
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.

Facility Name: CP & L - Mayo Steam Plant Permit # NCO038377 Pipe # 002
ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a nuarterlX basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A
Single Effluent Concentration" (Revised -July, 1992 or subsequent versions). The monitoring shall be
performed as a Fathead Minnow (Pimephales promelas ) 24 hour static test. The effluent concentration at
which there may be at no time significant acute mortality is 90% (defined as treatment two in the
procedure document). Effluent samples for self-monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The tests will be performed during the months
of Feb., May., Aug., and Nov.
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
TGE6C. Additionally, DWQ Form AT -2 (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 either these monitoring requirements 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 and appropriate environmental controls, shall constitute aA invalid test and will require
immediate follow-up testing to be completed no later than the last day of thelmonth following the month of
the initial monitoring. i 11
s7Q10
Permitted Flow
IWC
Basin & Subbasin
Receiving Stream
County
Lake cfs
n/a mad Recommended
n/a %
03-02-05
Mayo Reservoir
Person
Farrell Keough
Date * v�-� I
QAL (Fathead 24) PIF Version 9196

L(-15 Cn6CI
CP & L - Mayo Steam Plant
mgd 45 Qw used in model to achieve instream concentration of
NC0038377
- 002
lbs/d 3.8 �0.D1 mg/I selenium
October, 1995 -September, 1996
µg/I. 10 <=-- lbs/d - 0 00834 - mgd ,
n
Flow /madl
Lbs / Day
agn
Selenium Lbs / Day Selenium µL /I
1
633
0 211
4.00
Std Dev. 0.08 Std Dev. 1 0
2
4.65
0 155
400
Mean 0.15 Mean 3.6
3
633
0 317
600
C.V. 0.5 C.V. 0.3
4
549
0 137
299
5
465
0.155
4.00
6
549
0 229
500
Mult Factor = 1.7 Mult Factor = 1.4
7
1 42
0 050
4.22
Max Value 0.317 lbs/d Max. Value 6.0 µg/I
8
213
0 050
281
Max Pred Cw 0.539 lbs/d Max. Pred Cw 8.4 µg/I
9
0.46
0 012
313
Allowable Cw 3.8 lbs/d Allowable Cw ? µg/I
10
073
0 024
3.94
allowable from permit allowable not calculate
11
1 42
0 047
397
Standard is 5 µg/I
12
1 00
0 033
396
The model for this limit
13
413
0 138
401
,yas based upon keeping Based upon previous
14
633
0 211
400
the instream concentration model and instream
15
788
0 260
396
;below 0 01 mg/I, concentation, an
16
549
0.180
393
(refer�note on 1991 WLA) allowable of < 10 µg/I
17
711
0.240
405
be used for
18
549
0 229
500
;could
evaluation purposes,
19
711
0 237
400
;(as the intent was to
20
633
0 211
400
17 -Jan -96 have instream values
21
633
0.211
400
22 -Jan -96 below 0.01 mg/l, it
22
633
0.211
400
31 -Jan -96 would be inappropriate
23
4.13
0.103
299
(D dtaW e de6p itrvh 6oscraub6 dtc�V to"'use that number as
24
510
0 170
4.00tlae
allowable) Hence,
�N�c2s�-PNr� rlls & PK��I'&5p. -->
25
549
0 183
400
tJI j U,405 /o ,G/.e' /A)Dfae,.kp,, -tAajr,+ 8,.4 µg/I predicted is so
26
633
0 211
400
�� tc'm st cg S �%� close to < 10 µg/I, that
27
711
0 119
2 01the
hp%jr t -EGF V �1tiG7 iL�� (dJllM �-limit should remain.
28
29
788
465
0.197
0 078
300
201
5-h.kl,Y
66 nt, Q/YS a4l WU "�v,
30
349
0 087
299
0
"f VVU '0
31
32
4 13
304
0.103
0.051
2 99
201
tlD�
-�o AIPA vy�t'" h( C6 `Ik,nAVyjtj J-,"kvu ii'
33
413
0 069
2.00
34
7.11
0 119
2.01
35
788
0 131
1 99
L(-15 Cn6CI

January,
1995 throw h Januarv.
1996
Facrbty Name=
CP & L - Ma o
Parameter=
Arsenic
Parameter= Copper [AI]
Parameter=
Iron [AI]
NPDESX=
NCO038377 - 002
Standard=
50 µ9'I
Standard=
7 µyl
Standard=
1 myl
Ow (MGD) =
n/a
7010s (cis)=
n/a
n
BDL=1/2DL 'd 1/2 DL
RESULTS
n
BDL=1/2DL 'd 1/2 DL
RESULTS
n
BDL=1/2DL •d 1/2 DL
RESULTS
1WC (%) =
1
17
Std Dev
54
1
11
Std Dev
71
1
016
Std Dev
01
2
15
Mean
183
2
9
Mean
103
2
018
Mean
01
FINAL RESULTS
3
15
C V
03
3
9
C V.
07
3
023
C V
08
Arsenic
Mapmum Value 260
4
13
4
9
4
005 '
Max Pred Cw
468
5
12
5
8
5
016
Allowable Cw
00
6
14
Mult Factor=
1 8
6
4
Mult Factor=
17
6
005
Mult Factor=
19
7
23
Max Value
26 o µ9A
7
8
Max Value
50 0
µyl
7
013
Max Value
o 6 mgfl
Copper [A[]
Mawmum Value 500
6
23
Max Pred Cw
46 8 µgA
8
7
Max Pred Cw
85 0
µ9A
8
016
Max Pred Cw
1 2 myl
Max Pred Cw
850
9
26
Allowable Cw
µyl
9
9
Allowable Cw
ggA
9
017
Allowable Cw
myl
Allowable Cw
00
10
25
to
4
10
031
11
11
7
11
015
Iron [AI]
Mammum Value 06
12
12
6
12
005 '
Max Pred Cw
12
13
13
6
13
005
Allowable Cw
00
14
14
4
14
005 '
15
15
5
15
005
16
16
3
16
005
17
17
4
17
005 '
18
18
4
t8
0025 `
19
19
5
19
Oil
20
20
3
20
009
21
21
4
21
0 025
22
22
20
22
009
23
23
30
23
007
24
24
50
24
008
25
25
10
25
005
26
26
10
26
014
27
27
10 '
27
02
28
26
10
28
006
29
29
10
29
008
30
30
10
30
017
31
31
20
31
018
32
32
10
32
014
33
33
10
33
013
34
34
10
34
011
35
a5
10
35
014
36
36
10
36
011
37
37
05
37
008
38
38
10
38
007
39
39
10
39
02
40
40
10
40
02
41
41
20
41
017
42
42
10
42
009
43
43
10
43
02
44
44
10
44
02
45
45
10
45
015
46
46
10
46
062
47
47
10 '
47
008
48
48
10
48
011
49
49
20
49
005
so
so
20
50
006
51
51
10
51
007
52
52
10
52
005 '
53
53
10
63
019
54
54
10
54
014
55
55
10
55
024
56
56
98
56
046
57
57
98
57
68
56
94
58
59
59
11
59
60
60
10
60
1/30/97

(pIf"I "4
� n 4
C\O-�-ln I

T'OXICI7 Y TESTING 01SELF-MONITORING SUMMARY] Tue, Jdn 14, 1997
WHOLE EFFLUENT
MAR
APR MAY
RJN
I1G
SEP OCr
r C li YEAR
CP&L-Ler/001 Asbe Pund PERM 4tl1IR LCSO AC LIM 47% DAPII OR CERIO (GRAB)
JAN
93 ^
,
—
>88'
— —
—
>99•
>99•
—
>99' —
—
NC00034171001 Begin 1/1/95 Frequency Q A Mar Jun Sep Dec NonComp SINGLE
94 r
95 >99'
_
>99'
>99'
—
— —
>�
—
>99 —
—
County Wayne Region WARD Subbasm NL•U12
96 —
6691
—
>100 —
—
>89
Special
PF VAR
9 7
7Q10.2630 IWC(%) 047 Oder
CP&L-Lee/002 PERM 241111 LC50 AC MONrf EPIS F)7lD (GRAB) COOLII
93 —
_
>B0,
NC0003417/002 Begin 1/1/95 Frequency 4OWD/A NonComp
94 —
^
H
County Wayne Region WARO Subbasm NEU05
95 —'
96 —
—
—
—
—
—
H
—
>99 ^
—
PF VAR Special
97
7Q10. 263 0 IWC(%) NA Order
— —
— —
.Mayo Steam 'lectric Plant S Perm 24hrp/faclain 90% (grab)
lgt&�-
93
NC00Y 377A 02 Degin 2/1196 Fnx)ueny Q P/P A Feb May Aug Nov NonComp Single
94 —
^
County Person Region RRO Subbasm ROA05
96 —
98 —
—
—
—
—
Pass
—
Pass
—
Paso
PF 20013 Special
97
7Q10 00 IWC(%) lake Or&r
CP&1.-Roxboro/007 Perin24hrscp/flim 90%frhd
93 —
— ^
Pass% ^
_
Pae—
-- Postal
Pea
NC0003425/1)03 Degan I/1/96 Frequency Q A Mar Jun Sep Dec NonComp Single
94 —
—
_
Postal_
— _
Pass —
—
Paso —
Pass
County Person Region RRO Subbasm ROA05
96 —
96 —
Pass
—
Pass —
—
Pasa,Pase —
—
PF NONE Special
87
7Q10 NA IWC(%) NA Order
—
— —
CP&L•Ro:boro/006 Perm 24hr I-050 ac annual cpis fad (grab)
93 —
=
-
— —
>99f >991,>9911
>991
NonCom
NC0003425/006 Began I11/96 Frequency A p
91 -- --
— —
— —
--Country
—Cou
try Pelson Region RRO Subbasin ROA05
95
96 >99
^
—
—
PF NONE Special
97—
7Q10 NA IWC(%) NA Ord"
CP&L-Shearon Harris E&E Center Perm 24hr p/f ac hill 90%
93 ---—
NCO039586/007 Begin 911196 Frequency Q A /tib May Aug Nov NonComp Single
—
94Pasa
H
-
Find Faill)
— —
Pass
^ —
—
County Wake Region RRO Subbasm CPF07
95 —
B6
Foll,Pesla
—
— Pass
— —
Pass
— —
Page
PF 002 Special
W
7Q10 LAKE IWC(%) NA Order
>99f >991
>991 >991
>991
>99f 96
>991 >99f
CP&L•Shearon Ifarrn/006 Penn 48hr LC50 ac annual fihd
93 >99f
>991
>99f
>991 >991
>991 >99f
>991
>991 >9911
>991 >991
NC0039586IOD6 Degan 911/96 Frequency Q Feb May Aug Nov NonComp
94 >991
95 94 521
>991
>991
>991
>991
>991 >991
>99 >99
>99
>99 >99
>99 >99
County Chatham Region RRO Subbasm CPF07
96 >99
>99
>99
>99 >99
>99 >99
>99
>99
PF 18 6 Special
97
7QI0 LAKE IWC(%) NA Ooler
— —
—
— —
— —
CP&L-Sutton/001 Penn 241ir LC50 ac moms ftbd(grab)
93 —
-
—
— —
— H
—
—
NC0001422/001 Began 2/1/95 Frequency I/MONiII NonComp
94 —
995 5
—
>98f
—
NRH
NFLH H
H H
H
H
H
H H
H H
County New Ilanover Region WIRO Suhba m CPF17
-_
H
H
H
H H
>99
H H
H H
PF 2500 Special
97
7Q10- 11390 IWC(%) 2535 Order
_-
CP&L•Weatherapoon/001 PERM 24118 LC50 AC MONrf CPIS ]"IIID ((iRAB)
93
— —
H
NonComp
NC0005363/001 Begin 12/1/94 Freq icncy S OWDlA I
94 -"
^
County Robeson Region FRO Subbasm LUM51
B5 _-
96
>991—
—
^
^ _"
H —
--
— —
—
PF NA Special
97
7Q10 7160 IWC(%) NA Omer
Pass
..-
Pass
— —
Pass P —
CR Industries Penn c1u tun 3 3% (New perm 1/1/97)
93 --
Pass
Pass
—
^
--
Pass
— —
Pass
— —
Pass —
NC0004260/001 Begin 6/1/95 Fnqucncy Q P/F A Feb May Aug Nov NonComp Single
94
Fad
Fall
Pass NR/Pass
— —
Pass
— .-.
NJUPass —
County Gaston Region MRO Subbasm C17J37
95 —
96 ---
Pass
^
— Pass
— —
Pass
— —
Paso
PF 0 148 Special
97
7Q10 6 7 IWC(%) 3 3 Order
Pass —
--
Pass --
^ Pass
Cranston Print Works Perm elle lam 19%
03 ^
---
NRIP
Pass as
Nese
- -�
Page ^-
_-
Pass —
- NR/Pass
NC0000094/001 Began 10/1/95 Fnmuency Q PIF A Mar Jun Sep Dec NonComp Single
84 --
--
pass
— —
Fal Fal
Pass
Pass ^
^ Pass(s)
County Henderson Region ARO Subbasm MD02
95 _
96 Pass(s)
—
Pass
Pass
Pass,Pass FeII,Pass
Pass Fad
Fail,Lale
Pass Pass
Pass
PF 40 Special
97
7Q10. 316 IWC(%) 10 Order
0 2 consecutive failures = significant noncompliance V Pre 1993 Data Available
LEGEND
Target Frequency =Monitoring frequency Q- Quanedy, M- Monthly, DM- Diinontlaly, SA- Seimannually, A- Annually, OWD- Only when char NonComp
Compliance Requus ontinued monitoring of IS- Conducting independent u
PERM = Permit Reginrement IIT = Adgaimstrative Lcitcr -
Fust 7Q10 = Reci.ivmg stream low now cntci (cfs) A = qquanerly monitoring increases
to monddy upon smgli, failure Months that
Chronic
testing most occur - ex JAN,APR,JUL, p —
Bi gm = month required
PF = Pemuu J Dow (MGD) IWC%= Instremn waste conmaltmlaai P/F = Pass/Fad chronic Ii st AC = Acme
f Minnow • - Cenidaahiva so my - Mvstd shmm� CIIV - Ciuun,c value• p - Monaluv of siatL pi.nenance m
f I
(•1IR =
hiehwt concentmuon,
at - Performed by DFM Tox Evill Group. bl - Dad test
11 Active but not discharging, T -Mori. data available for month
m quuuon
f = ORC signature needed
b
- .
Data Notation -Fathead
Data No a ion
-h a Data not nywnJ, N11 -Nut reported. ( ) - Ocgaiuseg of Quaner F4uhly Ai.6vtly Stains 1-
In4ci vc, N - Ni. Wly Is,ocd(I5
MIAMI). -