NCS000572 DMR SW

etaDUKE Duke Energy Carolinas-East
NDan River Combined Cycle Station
ENERGENERGY® 864 S Edgewood Rd
Y® Eden NC 27288
July 19, 2016
NC Dept. of Environment and Natural Resources Ir cs 0 00s-la
Attention: Central Files RECEIVED
Division of Water Resources
1617 Mail Service Center JUL 2 0 ZL i0
Raleigh, NC 27699-1617 CENTRAL FILES
DWR SECTION
Subject: Duke Energy Carolinas, LLC
NPDES Stormwater Discharge Monitoring Report for:
Dan River Combined Cycle Station — NC000572— Rockingham County
In accordance with Part III, E(2) of the above referenced NPDES Stormwater permit, the original
and one copy of the monthly monitoring reports Year 1 — Period 1 are attached. The period for
sampling ends on June 30, 2016.
Samples were collect from SW003, SW003A, SW003B, SW004, SW007, SW007A, and SW011
on June 5, 2016. The laboratory results were received on June 20,2016. Several analytes
(TSS, Cadmium, Copper, Lead, Silver, Zinc, and pH) sampled above/below the benchmark
values for analytical monitoring at SW003, SW003A, SW003B, SW004, SW007, and SW011.
See table below. Mercury was above the 12 ng/L North Carolina water quality standard at
SW003, SW003A, SW003B, SW004, SW011 Duke Energy has performed the steps required by
the Tier One status at this outfall.
Parameter Benchmark SW003 SW003A SW003B SW004 SW011 SW007
TSS 100 mg/L 3500 3000 2000 850 540
Zinc 0.126mg/L 1 59 0 243
Cadmium 0 003 mg/L 0 00872 0 00479 0.00316 0 0118
Copper 0 010 mg/L 0 255 0 194 0 187 0.0795 0.217
Lead _ 0.075 mg/L 0 404 0.258 0.161
Silver 0.0003mg/L 0.000526 0 000324
pH 6 0-9.0 S.U. 5.47
Mercury* 12 ng/L 25400 4760 3430 379 29.5
*Hg is not an exceedance but must be noted on the DMR if above 12 ng/L
All values reported on the attached reports are dependent on the accuracy of approved
analytical methods used to measure parameters. . Difficulties were encountered with the low
level Hg testing due to the elevated TSS of the samples.
Please direct any correspondence or questions concerning the Dan River Combined Cycle
NPDES Stormwater Program to Dana Newcomb at [phone] or Joyce Dishmon at (336)
623-0238.
Respe tfully,
L-wrence Sparks
General Manager
Dan River Combined Cycle Station/Rockingham CT Station

STORMWATER DISCHARGE OUTFALL(SDO)
MONITORING REPORT
Permit Number NCS601i572 E I ' '- SAMPLES COLLECTED DURING CALENDAR YEAR: 2016
(This monitoring report shall be received by the Division no later than 30 days.from
,,,i1 2 fl 2016 the date the facility receives the sampling results from the laboratory.)
FACILITY NAME Dan River Combined C clecle StatilF{‘9Rl�L T4LS COUNTY Rockingham
PERSON COLLECTING SAMPLE(S) Staff kj '` `7 -C I l'N PHONE NO. [phone]
CERTIFIED LABORATORY(S)Duke Energy of the Carolinas,LLC Lab#248
Shealy Environmental Services,NC Lab#329 -_
SIGNATURE OF PERMITTEE OR DESIGNEE `
REQUIRED.
Part A: Specific Monitoring Requirements --- -- - -µ
Outfall . Date ° 50050- ' ' 00400 400530 ',', 01022 ` , ', 01092- « , 01097 - -01002 -
No.' - ` ' Sample " ' Total , `Total , pH - Solids,Total Boron,Total Zinc,,Total(as Antimony, Arsenic,Total
-' ' Collected - Flow(if app.) Rainfall - Suspended- (as B), 'Zn)' ' Total(as Sb) as(As) ' '
Concentration , - -
'mo/dd/yr '' MG.- _ inches -SU `_ ' mg/L.: tng/L - mg/L ` _ - mg/L' n ,mg/L
SW003 06/05/16 N/A 0.2" 8.23 3500 0.242 1.59 <0.001 0.0125
Outfall - Date. 01012 ' . .01027 01034 01042 01051 -- - 01067 - 01147 , '01077
No. : Sample- -`'Beryllium, - Cadmium, , Chromium, ' ` Copper,Total Lead,Total , Nickel,Total ' Selenium; Silver,Total-
Collected Z , Total(as Be). Total(as Cd) - Total'(as Cr) -, (as Cu) _ (as Pb) (as Ni) ,', Total(as Se). (as Ag) -
- . . mo/dd/yr - ,, mg/L -' , , mg/L' mg/L ' _ mg/L-. - ' , -mg/L . ing/Li - mg/L - `mg/L- ,
SW003 06/05/16 0.00773 0.00872 0.245 0.255 0.404 0.139 0.0137 0.000526
Outfall ' z , Date--_ , 01059 71900 34671 '' - 39488 39492 39496 ` - 39500 ,39504 `` 39508 -
No., - Sample, ' ` Thallium, : Mercury, PCB-1016 PCB-1221 - PCB-1232'- , PCB-1242 , PCB-1248 - PCB-1254 PCB-1260
, ' Collected Total(as Tl) - Total;Method - - - -
1631E
, ' . mo/dd/yr ', , ,' mg/L , : . ng/L . µg2 - µgm_ '- =µg2 , : µg/L `' ,r = µg/L - : µg/L,- µg2
SW003 06/05/16 0.00176 25400 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
Outfall` - 1, Date ' 00556
No., , Sample _ -. Oil&Grease,-
Collected - ' -
- . , . 'mo/dd/yr -. - mg/L - . -
SW003 06/05/16 <4.0
Form SWU-247,last revised 2/2/2012
Page 1 off

Outfall . 2...` 'Date' ` ' 50050:'' '. ' • 00400' -- -- 00530 -,-: 01022;;.2, -` - 01092: ' -- -01097, . ,- '01002 ' ." . `_a
No:',-` -, : Sample,- ` ,° Totals -R :Total -'°-, , 0-1-- n ;. Solids,Total,,, Boron,,Total"„°,-Zinc,Total"(as•. Antimony;,-,' Arsenic,Total,
-Collected,• ; Flovv'(if app;),,-,:, Rainfall ' •:-.,:•,„''''.!_Suspended- (as B)' Zn)-- ,. ” - Total(as Sb) : as(As) ,,_
;Concentration
`, - ' and/ddlyr- , "MG- : _ inches' - - -, SUS, , • mg/L , mg/L;'.,'-. - ' '' =mg/L '• , 1 - ing/L _ `- , . amg/L- '
SW003A 06/05/16 N/A 0.2" 8.34 3000 <0.05 <0.005 <0.001 0.0104
;Outfall,-;:,-"'. , 'Date' �'. . � '01012 �'. 01027-' :— ; '01034` M'" ` ' 01042:',. . :01051 ,` „_ 010,67 ' :',, 01147 - . ` 01077 -
.No.- ., '. ,Sample''' `.r,. "Beryllium,_ _ Cadmium,- '-. Chromium, Copper,•Total :`Lead,Total, Nickel,Total, , Selenium, Silver,Total
Collected- _ •Total(ai'Be)- Total(as Cd) Total,(as Cr) '- '(as Cu) (as Pb): . '(as=Ni) - . Total(as Se)- ,(as Ag)
„ . -,, mo/dd/yr: . ' 'mg/L--- - ; `mg/L ' ' - : mg/L` : mg/L mg/L --: mg/L- - mg/L , : mg/L-
SW003A 06/05/16 0.00527 0.00479 0.175 0.194 0.258 0.0986 0.0140 0.000324
Outfall. • Date • ` _01059 ' .: 71900 - , `• ', 34671 ' ' '• 39488 ,, . ' 39492' . .39496 39500 =` •. , 39504. :39508
No. ; -. ''Sample- `' ''Thallium,Total , Mercury, ` .• ,PCB-10162:, PCB-1221-,. PCB-1232 ,: PCB-1242 —PCB-1248 -PCB-1254 . :PCB-1260.
,'-.;-`t, '-_' Collected--` •r (as Ti) ,- Total,-Method, ' ' , -
1631E . •• _ - -
' ' . v,- .zno/dd/yr - ' mg/>J• ` - ng/L . µg/L- ' , µg/L- ' µg2 , -µg2 µg2- - µg2 - µg2 _
SW003A 06/05/16 0.00116 4760 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
:Outfall- t" .: =Date,r-- . -< :- .00556 , ' -
:No: ,. '"Sample '- ' . Oil&.Grease . .
- F- Collected'
- _ - - ` mo/dd/yr - mg/L- - .
SW003A 06/05/16 <4.0
•
Form SWU-247,last revised 2/2/2012
Page 2 of,

Outfall° Date 50050 ;004002"_, - t 00530 ` 01022 - 01092 " 01097 01002' ';
No.' Sample Total,-5.,,'_ : Total _ PH _, : SolidsTotal °Boron,Total`, , Zinc,Total(as:� Antimony, "Arsenic,Total
Collected Flow of a 'Rainfall= Suspended.- as•B hi): ' - Total as�Sb as(As)
7 - Amo/dd/yr � ,.MG,: inches'77 " 'SU mg/L° :� _�mg/L• -2',_ �mg/L';, mg/L�` - _• ., w " iiig/I.
SW003B 06/05/16 N/A 0.2" 8.21 2000 <0.05 <0.005 <0.001 0.00650
=Outfall.a �� Date r_ 01012 = 01027,,` " - ; ,-01034_ 2 01042. --" 01051,.°�_ " ;01067 .', 41147 . - 01077'
No:,, '� Samplenf' Beryllium= Cadmium �Chroinium, Co er Total, ,Lead Total,„--.r ,Nickel,Total Selenium `Total
a P ”p �" Silver
�
- - Collected - Total(as'pey., .Total(as`CdYTotal(as Cr)_ - ' (as Ni) Total(as Se) (as Ag)
Amo/dd/yr.,:._-:,,: - mg/L mg/L ' . - nig/L w �mg/L., �` mg/L ,` nig/L` : _
SW003B 06/05/16 0.00332 0.00316 0.114 0.187 0.161 0.0657 0.00988 <0.0003
Outfall=;_ " Date'_:%: �01059�� ~�; ` -� 7,1900 _:X4671 '39488;; .394921 - ; '39496— _ 39500: '_`' 39504_ �v . -39508
Thallium,Total_ =Mercury, PCB-1016 PCB-1221 PCB-1232-z,° P,CB-1242: PCB-1248°- ,PCB-1254- PCB-1260,-,n72�
:Collected '(as_TI)z` °:Total,:Method , _
r • . ,_ mo/dd/yr_ , ,mg/L" ;:= nit µg2 _ `µms �'` 'OWL'
SW003B 06/05/16 0.000764 3430 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
Outfall Date- '7:7 005,56 -
7 _ Sample` "Oil 0-,Grease
. a Collected ;
s mo/dd/yr
SW003B 06/05/16 <4.0
Form SWU-247,last revised 2/2/2012
Page 3 ofb

Outfall;. : '2,:-, Date; ° , ,50050-'-'- -, 00400 ,, .,a 00530 .� 01022 - -- , a 01092..,�` 01097`=° --, 01002° ' -,
No: , '" `,` " Sample.y ', , Total°- :' ;' •Total' , pH,': .- >`- Solids;Total- T,Bor'on,,Total -Zinc,,Total(as- Antimony, '' °• Arsenic,Total ,
Collected ! ' ','Flow-(ii app.).` Rainfall ''„' - ° :Suspended- (as_B) - 'Zn),, . Total Sb) ,as'(As)" • '
Concentration_ .
-,,, ° mo/dd/yr ° , MG , e' _ `inches , SU.` = e ° mg/L'T; ' - `mg/L; ;mg/L,- '„mg/t., -_ -_ - -mg/L : -- ,
SW004 06/05/16 N/A 0.2" 6.96 850 <0.05 <0.005 <0.001 0.00163
Outfall,,-- --°';t .Date;- ,` `�- , 01012 ` 01027.,`', �- ` 01034 , ,-" ' ;; 01042- a„-` ' -- 01051- _ 4 ,01067 _ _ 01147 _ .' 01077 _-
-No: ., , ' : Sample „Beryllium,-- ,Cadmium,;_ ° ° ;Chromium, , Copper,°=Total Lead,Total - :Nickel,-Total :Selenium; ,^ - Silver,Total °
. ` ' _ Collected— ; Total(as`Be).i= Total,(a"s Cd) ° °'Total(as Cr)= '(as Cu) (as Pb) : -.(as - , ' Total(as Se) ''(as`Ag) -
" , =;'mo/dd/yr'" - mg/L - , . mg/L ° ,mg/L , - mg/L. ° '-mg/L '. ° mg/L , ' mg/L,' mg/L. -
SW004 06/05/16 0.00180 0.0118 0.0720 0.0795 0.0303 0.0365 <0.001 <0.0003
Outfall„,'- , Date -- , '01059,-,, _ , , 71900, -_ 34671 ' ,-39488 - 39492- 1 ' _39496, -, - 39500 -- 39504 , •, '-. ; 39508-, =
-No.''- . -- - Sample= ', Thallium,Total-:; Mercury, ; .- ;PCB-1016,E , PCB-1221'_ TCB-1232.. . PCB-1242 ,,°_, PCB-1248 '- PCB-1254 °, PCB-1260 -
- ' ' Collected',:°, (as.TI) .° ' . Total;Method < ° . ; . - '
= ,- , ' ,,
'mo/dd/yr` - r mg/L ' ' ' ng/L '' :- ' , µg2 , µg2. 7 - ° µg2 µg2:, , , µgm a ,- - ,µg/L ' µg2 _
SW004 06/05/16 0.000459 379 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
Outfalls-' Date- ` ` 00556,
No.; `' - Sample:T , Oil-&°Grease" -
- - - Collected -' 7.2,' '
- , '_ , _ mo/dd/yr `mg/L; =
SW004 06/05/16 <4.0
Outfall 'Date:'-,- --, , ;' 50050' - _- - . , - , _00400-__ '-° , , "00530 -`e:,-r- -'_;';
No:_ _,' Sample _ Total':---,- - Total - pH-,'', : Solids,Total,-_-
° ;Collected - - ' Flow(if app:)1 :Rainfall ° ° : e ° ', Suspended; .-.
- _ , -- - _. - = - - , - ° ,, ,Concentration - -
` - - _ :mo/dd/yi•° MG - _ . —. ,_ , -inches ,` , 'SU,.-' ' mg/L,'--
SW007 06/05/16 N/A 0.2" 5.47 64
Outfall' '`Date: „ -' , ” 50050 ' - , ' ' ° '00400" , ,00530 „`
No.°,: =Sample,2 ° , . 'Total='t' ; : w Total -pHd Solids,STot'al_-J,,,
" ' Collected,,_° °F+low.(if app), Rainfall; - ' A _ - - Suspended'- °
- -° a -',_ , _ , _ - , -° ._ ° `Concentration. -
_`. ._riio/dd/yr , ,MG - ' - . _, inches—, ,4,-- - SU' . , , ; . mg/L '
SW007A 06/05/16 N/A 0.2" 6.48 63
Form SWU-247,last revised 2/2/2012
Page 4 of,4