NC0024406_Update to Pending Renewal_20150722

DUKE Harry K.Sideris
ENERGY® Senior President
Environmental,Health&Safety
526 S. Church Street
Mail Code:EC3XP
Charlotte,NC 28202
[phone]
July 22, 2015
RECENEDIDENRIDWR
Mr. Jeff Poupart
JUL 2 7 2015
North Carolina Division of Water Resources Water Qualtty
1617 Mail Service Center PermwiM3 SedgyO'
Raleigh, NC 27699-1617
Subject: Duke Energy Carolinas, LLC
Belews Creek Steam Station
Update to pending NPDES renewal application and
Submittal of chemical characterization of water for dewatering ash basin
NCO024406
Stokes County
Dear Mr. Poupart:
In response to the request from the North Carolina Division of Water Resources, please find
attached chemical characterization of ash basin free water and ash basin interstitial water for the
Belews Creek Steam Station. The analysis conducted and reported herein is consistent with the
information requested by NC DENR for other Duke Energy sites. This is submitted in support of
potential upcoming dewatering activities.
The results of analysis on the chemical characterization of the ash basin free water and ash basin
interstitial water are presented: 1.) without additional treatment beyond the treatment in the basin
and 2.) after additional treatment using different filter sizes. The following definitions may be
helpful for inclusion in a re-issued NPDES permit.
Ash basin free water: Water in an ash basin located above the settled layer of ash. Ash
basin free water has undergone treatment in the ash basin and has the same general
characteristics as water typically discharged from the ash basin.
Ash basin interstitial water: Water in an ash basin that is located within the pore space
of accumulated wastewater sludge or slurry.
If you have any questions, please contact Ms. Joyce Dishmon at [phone].

Mr.Jeff Poupart
Belews Creek Free Water and Interstitial Water Submittal
July 22,2015
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. 1 am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations.
Sincerely,
f
Harry K. Sideris
Senior Vice President
Environmental, Health& Safety
Enclosures
cc: Richard Baker, Director w/enclosure
Shannon Langley w/enclosure
Joyce Dishmon w/enclosure

Belews Creek Energy Complex
Dewatering data submittal
June 2015
Boron m emmide Cadmium(ug/1) Calcuum m
#Bereek Ash Basin 0.3 Meters 06/11/15 0.103 1.22 5.67 0.075 16.3 6.222 <1 227
Creek Ash Basin 5 meters 06 11/15 0.061 1.37 4.83 0.076 15.1 6.051 <1 217
reek Ash Basin 10 medters 11 15 0.035 <3 4.42 0.077 15.0 6.137 <3Creek Ash Basin 15 meters 06/11/15 0.041 <3 4.92 0.077 15.0 6.197 <Geek Ash Basin 20 meters 06 11 15 0.042 <1 4.11 0.074 15.2 6.320 <i 222
ater no additional treatment 06/11/15 32.00 8.71 90.6 0.448 12.1 0.8168 <1 110
Interstitial water 20 micron filter 06/11/15 11.20 10.40 63.8 0-196 11.9 0.7732 <1 109
Interstitial water 10 micron filter 06/11/15 7.66 10.80 58.4 0.152 11.7 0.8059 <1 107
Interstitial water 0.45 micron filter 06/11/15 7.48 11.00 58.4 0.149 11.7 0.7818 <1 130
Igollect1w Dall Chloride m !i
Belews Creek Ash Basin 0.3 Meters 06/11/15 471.8 <1 1.19 <1 0.046 <1 73.3 0.148
Belews Creek Ash Basin 5 meters 06/11/15 469.5 <i 1.46 <S 0.032 <S 68.4 0.447
Belews Creek Ash Basin 10 medters 06/11/15 480.1 <3 1.71 <S 0.097 48.3 66.6 0.975
Belews Creek Ash Basin 15 meters 1 06111/15 479.7 <1 1.69 <3 0.119 64.3 69.2 1.06
Belews Creek Ash Basin 20 meters 06/11/15 485.1 <1 1.38 <3 0.052 81.6 69.5 0.707
Interstitial water no additional treatment 2Y11111 15 8.413 28.3 34.5 1.041 6.67 22_2 2.36 0.046
Interstitial water 20 micron-filter 06/11/15 8.494 4.91 6.57 1.051 1.12 4.05 0.993 0.008
Interstitial water 10 micron filter 06/11/15 8.543 <1 1.13 1.051 0.086 <1 0.766 <0.005
Interstitial water 0.45 micron filter 06/11/15 8.511 <I <1 1.041 <0.01 <1 0.756 <0.005
CqllectedOil&Grease(ma/6) off (Si units)
Belews Creek Ash Basin 0.3 Meters 06/11/15 4 92 0.036 - 7 99 0.083 6.77
Belews Creek Ash Basin 5 meters 06/11/15 2.1 25 6.19 0.024 7.12 0.07 10.6
Belews Creek Ash Basin 10 meciters 06/11/15 4.7 16 5.23 0.39 6.61 O.D69 7.04
Belews Creek Ash Basin 15 meters 06/11/15 4.9 16.3 5.3 0.395 6.59 0.07 6.71
Belews Creek Ash Basin 20 meters 06/11/15 5 14.5 4.88 0.32 6.71 0.73 6.68
Interstitial water no additional treatment 0 11 15 1.700 2260 21.3 <0.01 10.1 0.338 60.7
Interstitial water 20 micron filter 06/11/15 0.659 2200 3.94 <0.01 10.1 0.139 56.4
Interstitial water 10 micron filter 06/11/15 0.605 2220 <1 0.01 10.1 0.096 56.5
Interstitial water 0.45 micron filter 0611 15 0.570 2220 <1 <0.01 10.1 0.120 57.5

TDS(ma/L) TSS(ma/Ll Vanadium(ua/L)
8elews Creek Ash Basin 0.3 Meters 06/11/15 147.9 1600 1.35 0.71 5 4 14 <0.005
Belaws Creek Ash Basin 5 meters 06/11/15 137.5 1600 1.09 0.75 5 2.94 0.006
Belews Creek Ash Basin 10 medters 06/11/15 116.6 1600 0.588 0.58 <5 2.57 0.012
Belews Creek Ash Basin 15 meters 06/11/15 117.9 1600 0.583 0.55 <5 2.40 0.012
Belews Creek Ash Basin 20 meters 0 1 15 117.5 1600 0.561 0.52 <5 2.46 0.009
Interstitial water no additional treatment 06/11/15 164.4 440 1.98 3.1 410 728 0.041
Interstitial water 20 micron filter 06/11/15 163.6 440 0.841 2.9 50 670 0-006
Interstitial water 10 micron filter 06/11/15 164.3 450 0.706 3.0 5 696 <0.005
Interstitial water 0.45 micron filter 06/11/15 164.0 430 0.713 2.9 <5 651 <0.005