NC0005088_Permit (Application Amendment)_20150514

et' DUKE Environmental Services
�C ENERGY® Duke Energy
526 South
CAROLINAS Charlotte, NC 28202
Mailing Address:
EC3X/P.O. Box 1006
Charlotte, NC
RECEIVED/DENR/DWR 28201-1006
MAY 19201,-;
May 14, 2015
Water Quality
Permitting Sectior.
Mr. Jeffrey Poupart, Section Chief
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Addendum to NPDES Waste Water Permit Application Permit
Chemical Characterization of Water for Dewatering of Ash Basins
Rogers Energy Complex
NC0005088
Rutherford County
Dear: Mr. Poupart,
In support of Duke Energy's request to permit dewatering activities in the active ash
basin, Duke Energy submits the attached characterization of wastewaters for the
subject facility. The attached table provides results of chemical analysis of both ash
basin free water and ash basin interstitial water. The ash basin free water samples
were taken from water above the ash in the active ash basin. The ash basin interstitial
water samples results from the active basin are presented 1 .) without treatment and 2.)
after treatment with three different size filters.
The process we envision for dewatering of the site's ash basin is to enable excavation
and ash removal that is similar to that described in the Coal Ash excavation plans for
other sites submitted to your agency and dated November 13, 2014. Rates of
wastewater removal will be determined by the needs for treatment as well as any
restrictions put in place in order to meet dam safety drawdown requirements. Any water
from dewatering will be comingled with active wastewaters generated by the plant and
directed to NPDES permitted outfall 002
If you have any questions regarding this submittal, please contact Robert Wylie at (704)
382-4669 or [e-mail].

Page 2 of 2
May 14, 2015
Letter to Mr. Jeffery Poupart
I certify, under penalty of law, that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry of
the person or persons who manage the system, or those persons directly responsible for
gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing
violations.
Sincerely,
//V:
Harry K. Sideris
SVP Environmental Health and Safety
Attachment:
Chemical Analysis of Ash Basin Free Water and Interstitial Water

Cliffside(Rogers)
Dewatering Data Submittal
May 2015
ramaimmit ma CSS Active AB 0.3 m CS5 Active AB Sm CSS Active AB SOm 'CSS Active AB 15m CSS Active AB 20m Active Basin Interstitial Active Basin PZ,20u Active Basin PZ,10u Active Basin PZ,0.45u
sack Ea& sack Am& &Act Emma sack Balt S.Ef t Eon Sack Loin SAf2 Mud 54(2 Emit 5.4Lt Bruit
011 and Grease mg/L < 5
Nitrite+Nitrate(Colorimetric) mg-N/L 0.202 0.66 0.954 0.95 0.952 0.038 0.049 0.043 0.043
Total Kjeldahl Nitrogen(Colorimetric) mg-N/L 0.24 < 0.15 < 0.15 < 0.15 < 0.15 2 1.8 1.9 1.7
Bromide mg/L 0.3312 0.6186 0.6462 0.6323 0.6336 0.5616 0.5574 0.5541 0.5563
Chloride mg/L 38.78 81.79 87.25 86.02 85.82 56.17 56.2 55.22 55.62
Fluoride mg/L 0.1277 0.2194 0.2393 0.2375 0.2389 0.3816 0.3814 0.3792 0.3809
Sulfate mg/L 52.6 69.42 70.96 69.38 69.23 159.2 160.3 157.5 159
Aluminum(Al) mg/L 0.1 0.13 0.081 0.076 0.078 65.8 3.19 0.79 0.599
Barium(Ba) mg/L 0.064 0.158 0.186 0.182 0.182 1.29 0.148 0.109 0.106
Boron(B) mg/L 0.315 1.08 1.26 1.24 1.24 8.37 8.34 8.26 8.27
Calcium(Ca) mg/L 33.7 62 63.5 62.1 62.4 113 99.8 98.9 98.9
Iron(Fe) mg/L 0.237 0.151 0.082 0.056 0.051 27.4 1.09 0.086 < 0.01
Magnesium(Mg) mg/L 3.52 8.37 9.42 9.3 9.33 7.57 2.44 2.23 2.23
Manganese(Mn) mg/L 0.141 0.034 0.104 0.109 0.141 0.217 0.013 0.005 < 0.005
Phosphorus(P) mg/L 0.023 0.029 0.036 0.066 0.078 1.91 0.151 0.086 0.075
Zinc(Zn) mg/L 0.036 0.008 0.008 0.007 0.008 0.158 0.01 < 0.005 < 0.005
Antimony(Sb) ug/L 1.17 6.02 7.12 6.82 7.04 < 10 4.84 4.96 4.84
Arsenic(As) ug/L 6.15 36.5 45.5 46.8 45.8 543 335 331 324
Cadmium(Cd) ug/L < 1 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1
Chromium(Cr) ug/L < 1 4.78 4.6 4.8 4.59 60 2.37 < 1 < 1
Copper(Cu) ug/L 2.62 2.17 1.26 1.28 1.32 172 6.79 < 1 < 1
Lead(Pb) ug/L < 1 < 1 < 1 < 1 < 1 80.8 3.47 < 1 < 1
Molybdenum(Mo) ug/L _ 15.2 53.6 58.6 58.3 56.4 2630 2720 2690 _ 2750
Nickel(NI) ug/L 5.7 3.7 6.72 6.03 6.87 72 3.03 < 1 < 1
Selenium(Se) ug/L 4.88 23.5 24.2 23.9 24 21.5 8.15 8.85 8.69
Thallium(TI)Low Level ug/L 3.06 1.51 1.12 0.961 0.951 7.08 0.32 < 0.2 < 0.2
Vanadium(V) ug/L 1.74 27.5 37.8 38 35.3 350 106 98.1 95.7
Mercury(CVAFS) ng/L < 0.5 0.533 1.02 0.823 0.72 39.6 3.86 0.509 < 0.500
pH SI Units 7.08 8.17 7.36 7.38 7.29 ,
TD5 mg/L 190 340 360 , 350 340 440 450 460 450
TSS mg/L < 5 _ < 5 < 5 < 5 < 5 2300 66 < 10 < 10