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HomeMy WebLinkAboutNC0002468_FINAL_CSA Sup 2_Figures_20160901♦♦ 1 . p , ,.•fir, � - 1 �w 74 a � ■ a � r i[f(([rCc� s NOTE' SOURCE: AERIAL SURVEY OBTAINED FROM WSPDATED APRIL 2014. TOPOGRAPHIC INFORMATION OBTAINED FROM NC DOT INFORMATION SYSTEM (GIS WEBSITE DATED 2010). HYDROGRA'PHY OBTAINED FROM 7.5—MINUTE TOPOGRAPHIC MAPS, SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC. CONTOURS DEPICTED IN FEET. 4 FT CONTOUR INTERVAL. �jh�r►?lf?°f'�' `17�}�'1;`� ' SCALE (FEET) 55c�ra a soo 1.000 F�2 SITE LOCATION MAP DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA DATE SEPTEMBER 2016 FIGURE 1-1 && && && && && && &&&& && &&&& && && && &<&<&< &<&<&< &<&<&< &<&<&< &< &< &< &< &< &<&< &<&<&< &< &<&< &<&< &<&<&<&< &<&< &<&<&<&< &<&<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&<&< &<&< &< &< &< &< &< &< &< &<&< &< &<&<&< &&&& &&&&&& && && && && && && && && &<&< &<&< &<&< &< &<&< &<&< &<&< &<&< ASHSTORAGE 1 ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAM STATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARYCELL DANRIVER AB-10SL AB-25S AB-30BRAB-5D MW-22BR CCSW001 CCSW002 DRRC001 INFSW009 NPDESOutfall #1 NPDES004AND SW2 OLDNPDES006 S-4SW009A AB-10D AB-10S AB-25BRAB-25D AB-30DAB-30SAB-35BR AB-5S AS-10D AS-12D AS-2D AS-4D AS-6D AS-8BRAS-8D BG-1D BG-5DBG-5S GWA-10DGWA-10S GWA-11D GWA-11S GWA-12DGWA-12S GWA-1DGWA-1S GWA-2DGWA-2S GWA-3D GWA-3S GWA-6DGWA-6S GWA-7DGWA-7S GWA-8DGWA-8S GWA-9DGWA-9S MW-23BR MW-301BR MW-303BR MW-306BR MW-308BR MW-310BR MW-311BR MW-314BR MW-315BR MW-317BR MW-318D SW-2 SW-4 SW-5 SW-7 SW-8 SW-9 MW-20DMW-20S MW-22DMW-22S MW-23D MW-10MW-10D MW-12MW-12D MW-9 MW-9D BG-10BRBG-10D BG-10S GWA-18D GWA-20DGWA-20S MW-317BRL GWA-8BR 6 0 0 5 7 0 5 6 05 5 054 0 5 2 0 5 1 0 5 7 05 6 0 5 5 0 5 0 0 5 4 052 0 530510 5 2 0 4 9 0 6 0 0 5 9 0 5 8 0 5 7 0560 550 580570 560 5 4 0 5 3 0 610 600 5305 2 0 560 550 560550 5 4 0 5 3 0 5 1 0 5 0 0 5 0 0 5 9 0 5 6 0 5 1 0 5 0 0 5 9 0 560 5 6 0 5 4 0 5 1 0 5 3 0 6 1 0 600 6 0 0 590 5 6 0 5 5 0 5 5 0 520 5 4 0 52 0 5 1 0 5 3 0 500490 640 600 5 6 0 550 560 5 6 0 5 4 0 550 5 3 0 5 3 0540 5 4 0 5 2 0 5 2 0 5 2 0 5 0 0500 5 9 0 S R -1 9 6 2 S R - 1 7 7 9 S R -1 7 7 9 SR-1953 DATE FIGURE AUGUST 2016 1-2 NOTES:1. AERIAL IMAGERY IS A COMBINATION OF NC ONEMAP (2010) AND A WSP AERIAL SURVEY (2014)2. TEN FOOT TOPOGRAPHICAL CONTOURS OBTAINED FROM 2015 WSP SURVEY DATA3. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a)5. WASTE BOUNDARY IS APPROXIMATE.6. AS-BUILT CAMA ASSESSMENT AND NPDES SERIES MONITORING WELLS ARE PROVIDED BY DUKE ENERGY, WSP, AND OTHERS7. CAMA H/V DELINEATION WELL LOCATIONS (BLUE LABELS) ARE APPROXIMATE AND HAVE NOT BEEN SURVEYED8. GREEN LABELS INDICATE AN ADDITIONAL ASSESSMENT WELL COMPLETED POST-CSA9. FOR MORE DETAILS REGARDING INDIVIDUAL WATER SUPPLY WELLS, SEE THE WATER SUPPLY WELL ANALYTICAL RESULTS MAP N 0 500 1,000 1,500Feet LEGEND &<CAMA AS SESS MEN T GRO UND WATE RMONITORING W ELL &<NPDE S C OM PLIA NCE GR OUN DWATERMONITORING W ELL &<NPDE S V OLUN TARY GR OUN DWATERMONITORING W ELL &&CAMA AS SESS MEN T SURFA CE WATERSAMPLE LOCATIO N &&CAMA AS SESS MEN T AREA OF W ETNE SSSAMPLE LOCATIO N ASH BAS IN CO MPL IAN CE BOU NDA RY ASH BAS IN CO MPL IAN CE BOU NDA RYCOINCIDENT WITH DU KE ENE RGYPROPERTY BOU NDA RY ASH BAS IN WA STE BOU NDARY ASH STORAG E; LC ID LAN DFILLBOUNDARY DUKE EN ERG Y PRO PERTY BO UND ARY ROAD S 10' TO POG RAPH Y HYDROGR APHY SA MPLE LOC ATION MAPDUKE EN ERGY C AROLIN AS, LLCDAN R IVER STEAM STATION ROCKINGHAM COUN TY, NORTH CARO LINA && && && && && && && && && && && && && && &<&<&< &<&<&< &<&<&< &< &<&< &< &< &< &< &< &<&< &<&< &< &<&< &<&< &<&<&<&< &<&< &<&< &<&< &<&<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&< &< &<&< &<&< &< &< &< &< &< &< &< &< &< &< &<&< &&&& && && && && && && && && && && &<&< &<&< &<&< &<&< &<&< &<&< &<&< S-6 S-3 S-2 S-1 SW-6 SW-3SW-1 MW-11MW-11D SW-13 SW-12 SW-11 SW-10 MW-21SMW-21D GWA-4SGWA-4D GWA-15SGWA-15D GWA-14SGWA-14D NPDES Outfall #2 GWA-5BR GWA-16SGWA-16DGWA-5BRD 4 9 0 5 2 0 5 3 0 5 0 0 5 0 0 5 0 0 4 9 0 520 5 2 0 5 1 0 5 0 0 5 2 0 4 9 0 530 4 9 0 4 9 0 5 2 0 510 5 0 0 5 0 0 5 1 0 5 2 0 5 1 0 5 0 0 5 0 0 5 3 0 5 3 0 4 9 0 @A @A@A@A@A @A@A@A@A@A @A@A@A @A @A@A@A@A@A @A@A @A@A@A@A @A@A@A @A@A@A@A@A@A@A@A@A @A@A@A @A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A@A @A@A@A@A@A@A @A@A @A@A@A@A @A@A @A@A@A @A@A@A BG-1D GWA-20S/DGWA-6S/D MW-22S/D/BRMW-9/D AB-25S/D/BR MW-314BR MW-311BRGWA-7S/DBG-5S/D MW-10/D AB-10S/SL/DMW-310BR AB-35BR AB-5S/D AB-30S/D/BR MW-308BRGWA-10S/D MW-11/DMW-315BR GWA-15S/D AS-2D GWA-16DGWA-5BR MW-21S/D GWA-5BRDMW-318DAS-8D/BR MW-317BR/BRD GWA-4S/D GWA-14S/D GWA-8S/D/BR MW-23D/BR AS-4DGWA-12S/D GWA-11S/D MW-306BR GWA-17D AS-12D GWA-3S/D MW-303BRGWA-9S GWA-9D AS-6D MW-301BRAS-10D GWA-2S/DMW-12/D GWA-1S/D GWA-18D MW-20S/D BG-10S/D/BR 1 4 3 2 5 9 0550520 600 510 50 0 5 6 0 540520 5 9 05805 3 0 640600 5 7 0 5 7 0 5 5 0 5 2 0 5 0 0 5 9 0 570 560 530 5 5 0 5 4 0 610 600 5 4 0530 5 6 0 5 5 0 510 500 5 7 0 5 6 0 560550 5 4 0 5 3 0 5 2 0 5 1 0 5 1 0 5 0 0 4 9 0 510 5 9 0 5 7 0 5 9 0 510 5 2 0 5 0 0 560 5 5 0 5 6 0 5 2 0 5 2 0 5 2 0 6 1 0 600 560 5 5 0 560 5 5 0 5 4 0 5 3 0 5 3 0 5 4 0 530 5 2 0 5 3 0 5 2 0 49 0 60 0 5 8 0 560 560 560 5 6 0 5 5 0 5 3 0 5 4 0 53 0 520 5 2 0 5 0 0 5 0 0 5 4 0 WATER SU PPLY WELL LOCATIONSDUKE EN ERGY C AROLIN AS, LLCDAN R IVER STEAM STATION ASH BASIN ROCKINGHAM COUN TY, NORTH CARO LINA DATE AUGUST 2016 ¯ D :\A s h B a s i n \W a t e r _S u p p l y _W e l l s \C o m b i n e d _2 0 1 6 \D a n R i v e r O L D F R O M S A C G D B \D a n R i v e r _W S W s _1 -3 .m x d m m u r c h i s , 8 /3 0 /2 0 1 6 LegendREPORTED WATER SUPPLY WELL @A CAMA ASSESSMENT GROUNDWATER MONITORING WELL @A NPDES COMPLIANCE GROUNDWATER MONITORING WELL @A NPDES VOLUNTARY GROUNDWATER MONITORING WELL0.5 MILE OFFSET FROM ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKE ENERGY PROPERTY BOUNDARYDUKE ENERGY PROPERTY BOUNDARY10-FOOT ELEVATION CONTOURS FIGURE NOTES:1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.2. PRIVATE WELL LOCATIONS ARE APPROXIMATE.3. ORTHOPHOTOGRAPHY IS FROM NC ONEMAP GIS ONLINE SERVICE AND DUKE ENERGY CAROLINAS, LLC.4. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE. 5. ELEVATION CONTOURS PROVIDED TO DUKE ENERGY BY WSP (2015)6. SAMPLING OF IDENTIFIED WATER SUPPLY WELLS HAS NOT BEEN CONDUCTED BY DUKE ENERGY OR NCDEQ. FIGURE 1-3 0 0.25 0.5 0.75 10.125 Miles 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 600 5 4 0 4 9 0 590 560 5 90 560 58 0 610 5 2 0 5 7 0 520 5 0 0 61 0 54 0 5 6 0 5 5 0 50 0 570 530 5 7 0 550 5 1 0 570 530 62 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 540 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 56 0 5 90 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 10 55 0 560 540 530 5 4 0 630 620 540 500 5 6 0 610 5 20 510 5 2 0 5 6 0 5 1 0 56 0 550 530 550 5 2 0 5 3 0 550 590 530 490 540 D D D D D !( &<&< &< &<&< &< &< &< &<&< &< &<&< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< D a n R i v e r U U N N N N A A M M E E D D S S T T R R E E A A M M UNNAMED STREAMUNNAMED STREAM GWA-16SGWA-16SNMNM490' 5 0 0 ' 5 1 0 '5 2 0 '5 3 0 '5 4 0 ' 550' 560' 5 7 0 ' 5 8 0 ' BG-10SBG-10SNMNM GWA-20SGWA-20SNMNM AB-10SAB-10S572.45'572.45' AB-10SLAB-10SL498.49'498.49' AB-25SAB-25S500.07'500.07' AB-30SAB-30S512.15'512.15' AB-5SAB-5S520.8'520.8' BG-5SBG-5S508.63'508.63' GWA-10SGWA-10SNMNM GWA-11SGWA-11S541.84'541.84' GWA-12SGWA-12S573.03'573.03'GWA-14SGWA-14S490.95'490.95' GWA-15SGWA-15SNMNM GWA-1SGWA-1S576.51'576.51' GWA-2SGWA-2SNMNM GWA-3SGWA-3SNMNM GWA-4SGWA-4S505.11'505.11' GWA-6SGWA-6S488.94'488.94' GWA-7SGWA-7S528.22'528.22' GWA-8SGWA-8S570.94'570.94' GWA-9SGWA-9S586.07'586.07' MW-20SMW-20SNMNM MW-21SMW-21SNMNM MW-22SMW-22SNMNM MW-10MW-10NMNM MW-11MW-11NMNM MW-12MW-12574.37'574.37' MW-9MW-9NMNM 580' 570'560' 550' 500' 530'520'510' 490' 540' 4 9 0 ' 5 8 0 ' 5 7 0 ' 5 6 0 ' 5 5 0 ' 5 4 0 ' 5 0 0 ' 5 3 0 ' 5 2 0 ' 5 1 0 ' W.E. 1512.68' W.E. 2502.75' W.E. 3481.79' W.E. 4485.58' W.E. 5479.81' S R - 1 7 7 9 S R -1 7 7 9 DATE FIGURE AU GUST 2016 3-1 P A T H : \\S A C -S R V 0 1 \G I S \P R O J E C T S \D U K E E N E R G Y \A S H B A S I N \M A P _D O C S \D A N R I V E R \C A P _I I _S U P P L E M E N T \P O T E N T I O M E T R I C F I G U R E S \R E P O R T _ D A N R V _A N S I B _G W _C O N T O U R _S _W E L L _C O N T O U R S .M X D - U S E R : S G R O S E N I - D A T E : 8 /3 1 /2 0 1 6 LEGEND: &< G WA -2 S01.0 00 ' ASH BASIN ASSESSMENT GROUNDWATERMONITORING WELL &< G WA -2 S01.0 00 ' ASH BASIN COMPLIANCE GROUNDWATERMONITORING WELL &< G WA -2 S01.0 00 ' ASH BASIN VOLUNTARY GROUNDWATERMONITORING WELL !(WATER SUPPLY WELL NOT SAMPLED BY NCDEQ D WSP SURFACE WATER ELEVATIONS GROUNDWATER CONTOUR LINE (DASHEDWHERE INFERRED) DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY STREAM 10 FOOT TOPO CONTOURS 500 0 500 1,000 SCALE (FEET) N WATER TABLE SURFACE – SHALLOW WELLS (S) DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA NOTES:1. AERIAL PHO TOG RAPH Y OBTAINED FROM NC ONEM AP (2010) AND W SP (2014)2. HYDRO GRAPHY O BTAINED FROM PR OVISION AL JURISDICTIONAL WATERS MAP (USACE APPROVAL PENDING), PRO VIDED BY AM EC FOSTER W HEELER, DATED MAY 29, 20153. PARCEL DATA FO R THE SITE WAS O BTAINED FROM DUKE ENERG Y REAL ESTATE AND IS APPRO XIM ATE4. WASTE BOUNDARY IS APPROXIM ATE5. AS-BUILT MO NITORING W ELL LOCATIONS PROVIDED BY DUKE ENERGY6. G ROUNDWATER ELEVATIONS WERE M EASUR ED O N 6/12/20167. NM - G ROUNDWATER ELEVATION NOT M EASURED D URING ROUND 6 (6/12/2016) GAUGING EVENT8. WATER SUPPLY W ELL LOCATION S ARE APPR OXIM ATE. THE NUMBERS ASSO CIATED W ITH THE WATER SUPPLY WELLS CO RRESPO ND TO SECTION 4 OF THE COMPREHENSIVE SITE ASSESSM ENT REPORT (HDR , 2015)9. TO PO GRAPHIC CONTO URS ACQ UIR ED FROM WSP (DATED APRIL 2014)10. AB-10S WATER READING NOT USED FOR CONTOURING11. DAN RIVER ELEVATIONS ARE PRESEN TED FOR REFERENCE AS PART OF THE SURVEY BY W SP, DATED JUNE 26, 2015. 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 600 5 4 0 4 9 0 590 560 59 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 54 0 5 6 0 5 5 0 50 0 570 530 5 7 0 550 5 1 0 570 530 62 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 540 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 520 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 56 0 5 90 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 10 55 0 560 540 530 5 4 0 630 620 540 500 5 6 0 610 5 20 510 5 2 0 5 6 0 5 1 0 56 0 550 530 550 5 2 0 5 30 550 590 530 490 540 D D D D D !( &< &< &<&< &< &< &< &< &< &< &< &< &< &< &<&< &< &<&< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< D a n R i v e r U U N N N N A A M M E E D D S S T T R R E E A A M M UNNAMED STREAMUNNAMED STREAM GWA-16DGWA-16DNMNM490'5 0 0 '5 1 0 '5 2 0 '5 3 0 '5 4 0 ' 5 5 0 ' 560' 570' GWA-18DGWA-18DNMNM 5 8 0 ' BG-10DBG-10DNMNM GWA-20DGWA-20DNMNM AB-10DAB-10D492.77'492.77' AB-25DAB-25D494.16'494.16' AB-30DAB-30D490.41'490.41'AB-5DAB-5D520.52'520.52' AS-10DAS-10DNMNM AS-2DAS-2D531.04'531.04' AS-4DAS-4DNMNM AS-6DAS-6DNMNM AS-8DAS-8D547.63'547.63' BG-1DBG-1D500.72'500.72' BG-5DBG-5D508.23'508.23' GWA-10DGWA-10D520.49'520.49' GWA-11DGWA-11D542.25'542.25' GWA-12DGWA-12D565.96'565.96' GWA-14DGWA-14D494.17'494.17' GWA-15DGWA-15D482.22'482.22' GWA-1DGWA-1D574.58'574.58' GWA-2DGWA-2DNMNM GWA-3DGWA-3DNMNM GWA-4DGWA-4D499.61'499.61' GWA-6DGWA-6D484.85'484.85' GWA-7DGWA-7D527.3'527.3' GWA-8DGWA-8D569.95'569.95' GWA-9DGWA-9D584.52'584.52' MW-318DMW-318D537.85'537.85' MW-20DMW-20DNMNM MW-21DMW-21DNMNM MW-22DMW-22DNMNM MW-23DMW-23D515.47'515.47' MW-10DMW-10D482.65'482.65' MW-11DMW-11D492.85'492.85' MW-12DMW-12D575.36'575.36' MW-9DMW-9D495.47'495.47' 580' 570' 5 6 0 ' 5 5 0 ' 5 2 0 ' 4 9 0 ' 5 1 0 ' 5 4 0 ' 5 0 0 ' 5 3 0 ' 4 9 0 ' 5 8 0 ' 5 1 0 ' 5 7 0 ' 5 6 0 ' 5 5 0 ' 5 4 0 ' 5 0 0 ' 5 3 0 ' 5 2 0 ' W.E. 1512.68' W.E. 2502.75' W.E. 5479.81' W.E. 4485.58' W.E. 3481.79' S R - 1 7 7 9 S R -1 7 7 9 DATE FIGURE AU GUST 2016 3-2 P A T H : \\S A C -S R V 0 1 \G I S \P R O J E C T S \D U K E E N E R G Y \A S H B A S I N \M A P _D O C S \D A N R I V E R \C A P _I I _S U P P L E M E N T \P O T E N T I O M E T R I C F I G U R E S \R E P O R T _ D A N R V _A N S I B _G W _C O N T O U R _D _W E L L _ C O N T O U R S .M X D - U S E R : S G R O S E N I - D A T E : 8 /3 1 /2 0 1 6 LEGEND: &< G WA -2 D01.0 00 ' ASH BASIN ASSESSMENT GROUNDWATERMONITORING WELL &< G WA -2 D01.0 00 ' ASH BASIN COMPLIANCE GROUNDWATERMONITORING WELL &< G WA -2 D01.0 00 ' ASH BASIN VOLUNTARY GROUNDWATERMONITORING WELL !(WATER SUPPLY WELL NOT SAMPLED BY NCDEQ D WSP SURFACE WATER ELEVATIONS GROUNDWATER CONTOUR LINE (DASHEDWHERE INFERRED) DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY STREAM 10 FOOT TOPO CONTOURS 500 0 500 1,000 SCALE (FEET) N POTENTIOMETRIC SURFACE – DEEP WELLS (D) DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA NOTES:1. AERIAL PHO TOG RAPH Y OBTAINED FROM NC ONEM AP (2010) AND W SP (2014)2. HYDRO GRAPHY O BTAINED FROM PR OVISION AL JURISDICTIONAL WATERS MAP (USACE APPROVAL PENDING), PRO VIDED BY AM EC FOSTER W HEELER, DATED MAY 29, 20153. PARCEL DATA FO R THE SITE WAS O BTAINED FROM DUKE ENERG Y REAL ESTATE AND IS APPRO XIM ATE4. WASTE BOUNDARY IS APPROXIM ATE5. AS-BUILT MO NITORING W ELL LOCATIONS PROVIDED BY DUKE ENERGY6. G ROUNDWATER ELEVATIONS WERE M EASUR ED O N 6/12/20167. NM - G ROUNDWATER ELEVATION NOT M EASURED D URING ROUND 6 (6/12/2016) GAUGING EVENT8. WATER SUPPLY W ELL LOCATION S ARE APPR OXIM ATE. THE NUMBERS ASSO CIATED W ITH THE WATER SUPPLY WELLS CO RRESPO ND TO SECTION 4 OF THE COMPREHENSIVE SITE ASSESSM ENT REPORT (HDR , 2015)9. TO PO GRAPHIC CONTO URS ACQ UIR ED FROM WSP (DATED APRIL 2014)10. DAN RIVER ELEVATIONS ARE PRESENTED FO R R EFERENCE AS PART OF THE SURVEY BY W SP, DATED JUNE 26, 2015. 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 600 5 4 0 4 9 0 590 560 59 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 54 0 5 6 0 5 5 0 50 0 570 530 5 7 0 550 5 1 0 570 530 62 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 540 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 520 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 56 0 5 90 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 10 55 0 560 540 530 5 4 0 630 620 540 500 5 6 0 610 5 20 510 5 2 0 5 6 0 5 1 0 56 0 550 530 550 5 2 0 5 30 550 590 530 490 540 D D D D D !( &< &< &< &< &< &<&< &< &< &< &< &< &< &< &< &<&< &< &< D a n R i v e r U U N N N N A A M M E E D D S S T T R R E E A A M M UNNAMED STREAMUNNAMED STREAM GWA-8BRGWA-8BRNMNM 4 9 0 ' 5 0 0 '5 1 0 ' 5 2 0 ' 5 3 0 '5 4 0 '5 5 0 ' GWA-5BRDGWA-5BRDNMNM BG-10BRBG-10BRNMNM AB-25BRAB-25BR487.13'487.13' AB-30BRAB-30BR488.77'488.77' AB-35BRAB-35BR508.39'508.39' AS-8BRAS-8BR548.01'548.01'GWA-5BRGWA-5BR496.63'496.63' MW-22BRMW-22BR488.13'488.13' MW-23BRMW-23BRNMNM MW-301BRMW-301BRNMNM MW-303BRMW-303BRNMNM MW-306BRMW-306BRNMNM MW-308BRMW-308BR520.24'520.24' MW-310BRMW-310BR521.19'521.19' MW-311BRMW-311BR496.59'496.59' MW-314BRMW-314BR512.55'512.55' MW-315BRMW-315BR525.46'525.46' MW-317BRLMW-317BRL550.02'550.02' 4 9 0 ' 5 5 0 ' 5 4 0 ' 5 3 0 ' 5 1 0 ' 5 2 0 ' 5 0 0 ' 4 9 0 ' 5 5 0 ' 5 4 0 ' 5 3 0 ' 5 1 0 ' 5 2 0 ' 5 0 0 ' W.E. 1512.68' W.E. 2502.75' W.E. 3481.79' W.E. 4485.58' W.E. 5479.81' S R - 1 7 7 9 S R -1 7 7 9 DATE FIGURE AU GUST 2016 3-3 P A T H : \\S A C -S R V 0 1 \G I S \P R O J E C T S \D U K E E N E R G Y \A S H B A S I N \M A P _D O C S \D A N R I V E R \C A P _I I _S U P P L E M E N T \P O T E N T I O M E T R I C F I G U R E S \R E P O R T _ D A N R V _A N S I B _G W _C O N T O U R _B R _W E L L _C O N T O U R S .M X D - U S E R : S G R O S E N I - D A T E : 8 /3 1 /2 0 1 6 LEGEND: &< G WA -2 RB 01.0 00 ' ASH BASIN ASSESSMENT GROUNDWATERMONITORING WELL !(WATER SUPPLY WELL NOT SAMPLED BY NCDEQ D WSP SURFACE WATER ELEVATIONS GROUNDWATER CONTOUR LINE (DASHEDWHERE INFERRED) DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY STREAM 10 FOOT TOPO CONTOURS 500 0 500 1,000 SCALE (FEET) N POTENTIOMETRIC SURFACE – BEDROCK WELLS (BR) DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA NOTES:1. AERIAL PHO TOG RAPH Y OBTAINED FROM NC ONEM AP (2010) AND W SP (2014)2. HYDRO GRAPHY O BTAINED FROM PR OVISION AL JURISDICTIONAL WATERS MAP (USACE APPROVAL PENDING), PRO VIDED BY AM EC FOSTER W HEELER, DATED MAY 29, 20153. PARCEL DATA FO R THE SITE WAS O BTAINED FROM DUKE ENERG Y REAL ESTATE AND IS APPRO XIM ATE4. WASTE BOUNDARY IS APPROXIM ATE5. AS-BUILT MO NITORING W ELL LOCATIONS PROVIDED BY DUKE ENERGY6. G ROUNDWATER ELEVATIONS WERE M EASUR ED O N 6/12/20167. NM - G ROUNDWATER ELEVATION NOT M EASURED D URING ROUND 6 (6/12/2016) GAUGING EVENT8. WATER SUPPLY W ELL LOCATION S ARE APPR OXIM ATE. THE NUMBERS ASSO CIATED W ITH THE WATER SUPPLY WELLS CO RRESPO ND TO SECTION 4 OF THE COMPREHENSIVE SITE ASSESSM ENT REPORT (HDR , 2015)9. TO PO GRAPHIC CONTO URS ACQ UIR ED FROM WSP (DATED APRIL 2014)10. DAN RIVER ELEVATIONS ARE PRESENTED FO R R EFERENCE AS PART OF THE SURVEY BY W SP, DATED JUNE 26, 2015. 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S˂5U (˂5U) AB-2 5S4.3 (4.4 ) AB-1 0S0.44J (0.21J)AB-1 0SL0.51 (0.48J) GWA-9S˂0.5U (˂0.5U) GWA-12S˂0.5U (˂0.5U) BG-5S˂0.5U (˂0.5U) GWA-14S˂0.5U (˂0.5U) GWA-7S˂0.5U (˂0.5U) GWA-1S˂0.5U (˂0.5U) GWA-8S0.12J (˂0.5U ) MW-12˂0.5U (˂0.5U) GWA-6S˂5U (˂5U) AB-30S˂0.5U (˂0.5U) GWA-4S˂0.5U(˂0.5U) GWA-11S˂0.5U (˂0.5U ) AS-12S˂0.5U (˂0.5U) MW-11˂0.5U (˂0.5U) ANTIMON Y ISOCONCENTRATION CONTOU R MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.1 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR ANTIMONY IS 1µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 11 11 11 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D˂0.5U (˂0.5U) GWA-12D˂5U (˂5U) BG-5D˂0.5U (˂0.5U) BG-1D1.1 (0.96 ) MW-23D˂0.5U (˂0.5U) AB-5D˂5U (˂5U) MW-11D˂5U (˂5U) GWA-7D˂0.5U (˂0.5U) GWA-14D˂5U (˂5U)AS-8D˂0.5U (˂0.5U) AB-25D˂0.5U (˂0.5U) GWA-15D˂5U (˂5U) GWA-6D˂0.5U (˂0.5U) AB-10D2 (2 ) MW-12D˂0.5U (˂0.5U) GWA-8D˂5U (˂5U) AB-30D˂5U (˂5U) GWA-4D˂0.5U (˂0.5U) GWA-1D1.4J (1.2J) AS-2D˂5U (˂5U) GWA-11D˂5U (˂5U) MW-9D˂0.5U (˂0.5U) OW-308D˂0.5U (˂0.5U) MW-318D˂0.5U (0.13J) GWA-10D0.11J (0.14J) MW-10D˂0.5U (˂0.5U) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS ANTIMON Y ISOCONCENTRATION CONTOU R MAP - D EEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.2 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR ANTIMONY IS 1µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS MW-23BR˂5U (˂5U) AS-8BR˂5U (˂5U) AB-25BR˂0.5U (˂0.5U) AB-30BR˂5U (˂5U)MW-308BR˂5U (˂5U) MW-22BR0.46J (0.4J) GWA-5BR˂5U (˂5U) MW-315BR˂5U (˂5U) MW-317BR2.3J (1.7J) AB-35BR˂5U (˂5U) MW-314BR0.18J (˂0.5U) MW-310BR˂0.5U (˂0.5U) MW-311BR˂5U (˂5U) ANTIMON Y ISOCONCENTRATION CONTOU R MAP - B EDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.3 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR ANTIMONY IS 1µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S172 (144 ) AB-2 5S243 (257 ) AB-1 0S249 (231 )AB-1 0SL4.7 (4.4 ) GWA-9S˂0.1U (˂0.1U) GWA-12S0.38 (0.12 ) BG-5S˂0.1U (˂0.1U) GWA-14S0.077J (0.13 ) GWA-7S0.12 (0.099J) GWA-1S0.092J (0.098J) GWA-8S0.33 (0.24 ) MW-120.14 (0.067J) GWA-6S˂1U (˂1U) AB-30S0.078J (0.088J) GWA-4S0.23 (0.19 ) GWA-11S0.056J (0.045J) AS-12S0.21 (0.13 ) MW-110.24 (0.07J) ARSENIC ISOCONCENTRATION CONTOUR MA P - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.4 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR ARSENIC IS 10µg/L• 1.4J(1.8J) TOTAL CONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 11 00 001100 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D0.56 (0.57 ) GWA-12D2.3 (2.2 ) BG-5D˂0.1U (˂0.1U) BG-1D2.1 (2.4 ) MW-23D0.25J+ (0.059J) AB-5D5.6 (3.4 ) MW-11D˂1U (˂1U) GWA-7D0.11 (0.09J) GWA-14D0.41J (˂1U)AS-8D0.16 (0.23 ) AB-25D0.2 (0.12 ) GWA-15D˂1U (˂1U) GWA-6D0.73 (0.56 ) AB-10D0.3 (0.29 ) MW-12D0.15 (0.15 ) GWA-8D2.2 (2 ) AB-30D˂1U (˂1U) GWA-4D0.058J (0.081J) GWA-1D2.6 (2.7 ) AS-2D˂1U (˂1U) GWA-11D˂1U (˂1U) MW-9D0.062J (˂0.1U) OW-308D319 (282 ) MW-318D1.1 (1.4 ) GWA-10D0.17 (0.13 ) MW-10D0.074J (0.065J) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS ARSENIC ISOCONCENTRATION CONTOUR MA P - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.5 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR ARSENIC IS 10µg/L• 1.4J(1.8J) TOTAL CONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1010 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR0.47J+ (0.54J) AS-8BR˂1U (˂1U) AB-25BR0.12 (0.15 ) AB-30BR1.3 (1.2 )MW-308BR0.48J (0.47J) MW-22BR0.26 (0.2 ) GWA-5BR˂1U (˂1U) MW-315BR˂1U (˂1U) MW-317BR0.7J (0.76J) AB-35BR11.3 (12.8 ) MW-314BR1.6 (0.62 ) MW-310BR˂0.1U (0.7 ) MW-311BR0.52J (˂1U) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS ARSENIC ISOCONCENTRATION CONTOUR MA P - BEDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.6 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR ARSENIC IS 10µg/L• 1.4J(1.8J) TOTAL CONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 4 4 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S˂1U (0.18J) AB-2 5S˂0.1U (˂0.1U) AB-1 0S0.13 (0.11J+)AB-1 0SL0.012J+ (0 .022J) GWA-9S0.098J (0.088J) GWA-12S0.068J (˂0.1U) BG-5S˂0.1U (˂0.1U) GWA-14S0.012J+ (0.028J+) GWA-7S7.7 (8.2 ) GWA-1S0.029J+ (0.037J+) GWA-8S0.092J+ (0.059J+) MW-120.16 (0.24 ) GWA-6S0.18J+ (0.14J) AB-30S0.57 (0.55 ) GWA-4S0.013J+ (˂0.1U) GWA-11S0.1J+ (0.14 ) AS-12S0.025J+ (0.056J) MW-110.44 (0.49 ) BERYLLIUM ISOCONC ENTRATION CONTOUR MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.7 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR BERYLLIUM IS 4µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D0.039J (0.07J) GWA-12D0.12J (0.27J) BG-5D˂0.1U (˂0.1U) BG-1D˂0.1U (˂0.1U) MW-23D0.074J+ (0.03J) AB-5D0.13J (0.12J) MW-11D˂1U (0.27J) GWA-7D0.062J+ (0.056J) GWA-14D0.21J (˂1U)AS-8D0.045J+ (0.082J+) AB-25D0.081J+ (0.016J) GWA-15D0.21J (0.12J) GWA-6D0.062J+ (0.014J) AB-10D0.015J+ (0.024J+) MW-12D˂0.1U (0.015J) GWA-8D0.33J (0.17J) AB-30D˂1U (˂1U) GWA-4D˂0.1U (0.042J) GWA-1D˂1U (˂1U ) AS-2D0.3J (0.27J) GWA-11D0.25J (0.14J) MW-9D0.081J (0.014J) OW-308D0.013J+ (0.044J+) MW-318D0.45 (0.46 ) GWA-10D0.15 (0.1 ) MW-10D˂0.1U (0.079J) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS BERYLLIUM ISOCONC ENTRATION CONTOUR MAP - DEEP WELLS (D ) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.8 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR BERYLLIUM IS 4µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR˂1U (˂1U) AS-8BR0.19J (0.11J+) AB-25BR˂0.1U (˂0.1U) AB-30BR0.15J (0.31J)MW-308BR0.32J (0.38J) MW-22BR˂0.1U (0.011J+) GWA-5BR˂1U (0.16J) MW-315BR˂1U (0.2J) MW-317BR˂1U (˂1U) AB-35BR˂1U (˂1U) MW-314BR0.012J+ (0.014J) MW-310BR˂0.1U (0.031J) MW-311BR0.14J (˂1U) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS BERYLLIUM ISOCONC ENTRATION CONTOUR MAP - BEDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.9 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR BERYLLIUM IS 4µg/L• 2J(3.8J) TOTAL CONC ENTRATION (DISSOLVED CONCEN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 7 7 00 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S345 (325 ) AB-2 5S610 (554 ) AB-1 0S322 (311 )AB-1 0SL476 (451 ) GWA-9S˂50U (˂50U) GWA-12S˂50U (˂50U) BG-5S˂50U (˂50U) GWA-14S˂50U (˂50U ) GWA-7S˂50U (˂50U) GWA-1S˂50U (˂50U) GWA-8S˂50U (˂50U) MW-12˂50U (˂50U) GWA-6S661 (631 ) AB-30S275 (259 ) GWA-4S186 (174 ) GWA-11S126 (107 ) AS-12S894 (810 ) MW-11234 (216 ) BORON ISOCONCENTRATION CONTOUR MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.10 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR BORON IS 700 µg/L• 222(337) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 70070010001000 1 1 0 0 0 0 00 7 0 0700 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D˂50U (˂50U) GWA-12D˂50U (˂50U ) BG-5D˂50U (˂50U) BG-1D93.1 (91 ) MW-23D˂50U (˂50U) AB-5D505 (504 ) MW-11D102 (91.7 ) GWA-7D˂50U (˂50U) GWA-14D239 (238 )AS-8D˂50U (˂50U) AB-25D849 (787 ) GWA-15D50.2 (46.2J) GWA-6D565 (467 ) AB-10D322 (297 ) MW-12D˂50U (˂50U) GWA-8D˂50U (˂50U) AB-30D314 (278 ) GWA-4D268 (240 ) GWA-1D97.4 (˂50U) AS-2D710 (601 ) GWA-11D30.5J (˂50U) MW-9D1,030 (956 ) OW-308D355 (319 ) MW-318D1,640 (1,430 ) GWA-10D237 (206 ) MW-10D461 (423 ) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS BORON ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.11 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR BORON IS 700 µg/L• 222(337) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 7700 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR˂50U (˂50U) AS-8BR˂50U (˂50U) AB-25BR399 (357 ) AB-30BR310 (295 ) MW-308BR391 (374 ) MW-22BR526 (494 ) GWA-5BR200 (183 ) MW-315BR51.8 (25.4J) MW-317BR˂50U (˂50U) AB-35BR298 (273 ) MW-314BR424 (414 ) MW-310BR˂50U (˂50U) MW-311BR735 (677 ) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS BORON ISOCONCENTRATION CONTOUR MAP - BEDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.12 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR BORON IS 700 µg/L• 222(337) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 00..00 7 7 00..00 7 7 00..0077 00..0 0 7 7 00..007700..00 7 7 0 0 ..00 77 0 0 ..0077 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S˂0.03U AB-2 5S0.014J AB-1 0S˂0.03UAB-1 0SL0.54 GWA-9S0.077 GWA-12S0.27 BG-5S0.45 GWA-14S0.076 GWA-7S0.44J- GWA-1S0.077 GWA-8S0.26 MW-120.051 GWA-6S˂0.03U AB-30S0.013J GWA-4S˂0.03U GWA-11S0.16 AS-12S˂0.03U HEXAVALENT CHROMIU M ISOC ON CENTRATION CONTOUR MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC DH HS HSL C ON TOUR (DASHED WHEREINFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.13 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC D EPARTMENT OF HEALTH AND H UMAN SERVICES (DHHS) HEALTH SCR EENING LEVEL (H SL) FOR HEXAVALENT CHR OMIUM IS 0.07 µg/L• 10.3 RESULTS ARE TOTAL RECOVERABLE C ONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 0.070.07 0.070.07 0 .7 0 .7 0.7 0.7 0.0 7 0.0 7 0 . 7 0 . 7 110.70.7 0 .0 7 0 .0 7 0.070.07 0 . 0 7 0 . 0 7 0.07 0.07 0 .0 7 0 .0 7 0 .0 7 0 .0 7 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D˂0.03U GWA-12D˂0.03UMW-23D0.094 BG-1D4 BG-5D0.072 AB-5D˂0.03U MW-11D1.2 GWA-7D˂0.03U GWA-14D˂0.03UAS-8D0.03UJ AB-25D0.047 GWA-15D1.1 GWA-6D˂0.03U AB-10D0.29 MW-12D0.47 GWA-8D˂0.03U AB-30D˂0.03U GWA-4D0.022J GWA-1D0.043 AS-2D˂0.03U GWA-11D˂0.03U MW-9D˂0.03U OW-308D˂0.15U MW-318D˂0.03U GWA-10D0.57 MW-10D˂0.03U AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS HEXAVALENT CHROMIU M ISOC ON CENTRATION CONTOUR MAP - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC DH HS HSL C ON TOUR (DASHED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.14 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC D EPARTMENT OF HEALTH AND H UMAN SERVICES (DHHS) HEALTH SCR EENING LEVEL (H SL) FOR HEXAVALENT CHR OMIUM IS 0.07 µg/L• 10.3 RESULTS ARE TOTAL RECOVERABLE C ONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 7 7 00 ..0077 0 .70.7 00..00 77 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m MW-23BR˂0.03U AS-8BR0.044 AB-25BR0.54 AB-30BR0.013J MW-308BR˂0.03U MW-22BR˂0.03U GWA-5BR˂0.03U MW-315BR˂0.03U MW-317BR12.6 AB-35BR˂0.03U MW-314BR0.068 MW-310BR˂0.03U MW-311BR0.011J BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS HEXAVALENT CHROMIU M ISOC ON CENTRATION CONTOUR MAP - BEDR OC K WELLS (BR ) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC DH HS HSL C ON TOUR (DASHED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.15 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC D EPARTMENT OF HEALTH AND H UMAN SERVICES (DHHS) HEALTH SCR EENING LEVEL (H SL) FOR HEXAVALENT CHR OMIUM IS 0.07 µg/L• 10.3 RESULTS ARE TOTAL RECOVERABLE C ONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S˂5U (˂5U) AB-2 5S0.89J+ (0.29J+) AB-1 0S0.65J+ (0.99 )AB-1 0SL4.7 (1.1J+) GWA-9S0.33J+ (0.38J) GWA-12S2.2J+ (0.61 ) BG-5S0.81J+ (0.64 ) GWA-14S0.4J+ (0.56J+) GWA-7S0.91J+ (0.75 ) GWA-1S0.36J+ (0.39J+) GWA-8S1.1J+ (0.69 ) MW-120.27J+ (0.23J+) GWA-6S˂5U (0.93J) AB-30S0.45J+ (0.24J+) GWA-4S1.5 (2J+) GWA-11S5.8J+ (14.1 ) AS-12S0.44J+ (0.23J+) MW-115.4J+ (1.1J+) CHROMIUM (TOTA L) ISOCONCENTR ATION CONTOUR MA P - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.16 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR C HROMIUM (TOTAL) IS 10 µg/L• 2.1J(1J+) TOTAL CON CENTRATION (DISSOLVED CONC EN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D0.27J+ (0.18J) GWA-12D˂5U (˂5U) BG-5D0.81J+ (0.37J) BG-1D6.4 (6.8 ) MW-23D1.3J+ (0.42J+) AB-5D˂5U (˂5U) MW-11D2.2J (1.1J+) GWA-7D0.22J+ (0.19J) GWA-14D˂5U (˂5U)AS-8D0.3J+ (0.44J+) AB-25D9.6 (0.88J+) GWA-15D1.9J+ (1.4J) GWA-6D0.51J+ (0.51 ) AB-10D0.69J+ (1J+) MW-12D3.2 (2.1J+) GWA-8D˂5U (˂5U) AB-30D1.1J+ (˂5U) GWA-4D0.41J+ (0.39J+) GWA-1D˂5U (˂5U) AS-2D3.1J+ (˂5U) GWA-11D1.8J+ (˂5U) MW-9D2.3J+ (0.36J+) OW-308D0.89J+ (0.4J+) MW-318D0.41J+ (0.81J+) GWA-10D1.9 (1.8J+) MW-10D0.34J+ (0.32J+) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS CHROMIUM (TOTA L) ISOCONCENTR ATION CONTOUR MA P - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.17 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR C HROMIUM (TOTAL) IS 10 µg/L• 2.1J(1J+) TOTAL CON CENTRATION (DISSOLVED CONC EN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1010 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR˂5U (˂5U) AS-8BR1.2J+ (˂5U) AB-25BR7.8 (0.52J+) AB-30BR2.7J (˂5U)MW-308BR˂5U (˂5U) MW-22BR0.4J+ (0.31J+) GWA-5BR˂5U (˂5U) MW-315BR1.7J (˂5U) MW-317BR10.4 (9.2 ) AB-35BR1.4J+ (˂5U) MW-314BR1.3 (0.13J+) MW-310BR0.23J+ (0.17J+) MW-311BR4.9J (0.96J+) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS CHROMIUM (TOTA L) ISOCONCENTR ATION CONTOUR MA P - BEDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.18 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR C HROMIUM (TOTAL) IS 10 µg/L• 2.1J(1J+) TOTAL CON CENTRATION (DISSOLVED CONC EN TRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 0 1 0 11 1010 11 1100 1 1 1 1 11 1 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S31.2 (32.5 ) AB-2 5S0.2 (0.051J) AB-1 0S13.5 (13.5 )AB-1 0SL0.54 (0.47 ) GWA-9S3.3 (3.2 ) GWA-12S0.42 (0.17 ) BG-5S0.037J (0.027J) GWA-14S0.57 (1.8 ) GWA-7S18.6 (20.6 ) GWA-1S0.31 (0.39 ) GWA-8S0.24 (0.24 ) MW-1210.8 (10.2 ) GWA-6S˂1U (˂1U) AB-30S28.2 (26.8 ) GWA-4S2.4 (2.4 ) GWA-11S1.5 (2 ) AS-12S0.66 (0.67 ) MW-1134.1 (32.4 ) COBALT ISOCONCEN TRATION C ON TOUR MAP - SH ALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE INFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.19 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 µg/L• 0.24(0.190) TOTAL C ONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 1 1 1 1 1 1 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D0.84 (0.86 ) GWA-12D0.25J (0.31J) BG-5D0.031J (0.017J) BG-1D0.3 (0.23 ) MW-23D0.28J+ (0.049J) AB-5D2.3 (2.2 ) MW-11D˂1U (˂1U) GWA-7D3 (2.8 ) GWA-14D0.1J (0.1J)AS-8D0.11 (0.062J) AB-25D0.72 (0.32 ) GWA-15D˂1U (˂1U) GWA-6D0.26 (0.2 ) AB-10D0.32 (0.67 ) MW-12D2.3 (2.4 ) GWA-8D0.1J (0.11J) AB-30D0.28J (0.25J) GWA-4D0.082J+ (0.15J+) GWA-1D˂1U (˂1U ) AS-2D1.5 (1.4 ) GWA-11D1.3 (1.3 ) MW-9D0.7 (0.28 ) OW-308D0.085J (0.081J) MW-318D1.9 (3.1 ) GWA-10D0.57 (0.53 ) MW-10D0.52 (0.59 ) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS COBALT ISOCONCEN TRATION C ON TOUR MAP - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.20 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 µg/L• 0.24(0.190) TOTAL C ONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 010 1 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR˂1U (0.2J) AS-8BR˂1U (˂1U) AB-25BR0.27 (0.074J) AB-30BR˂1U (˂1U)MW-308BR16 (15.4 ) MW-22BR0.06J (0.076J) GWA-5BR˂1U (˂1U) MW-315BR0.22J (0.19J) MW-317BR0.33J (0.14J) AB-35BR˂1U (˂1U) MW-314BR0.14 (0.1 ) MW-310BR˂0.1U (0.052J) MW-311BR0.31J+ (0.13J+) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS COBALT ISOCONCEN TRATION C ON TOUR MAP - BEDROCK WELLS (B R) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE INFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.21 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 µg/L• 0.24(0.190) TOTAL C ONCENTRATION (DISSOLVED C ONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 300 300 1 1 00 000000 110000 0 0 3300 00 3300 0 0 330000 11 000000 33 00 00 300300 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S37,500 (35 ,500 ) AB-2 5S275 (˂50U) AB-1 0S13,200 (11,500 )AB-1 0SL153 (˂50U) GWA-9S111 (˂50U) GWA-12S1,440 (69 ) BG-5S83.2 (37J) GWA-14S˂50U (104 ) GWA-7S139 (˂50U) GWA-1S44.4J (˂50U) GWA-8S502 (30.2J) MW-12361 (105 ) GWA-6S11,500 (9,770 ) AB-30S155 (40.8J) GWA-4S79.2 (41.3J) GWA-11S80.5J+ (93.5 ) AS-12S322 (38.9J) MW-11864 (211 ) IRON ISOCONCENTRATION CONTOUR MAP - SHA LLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.22 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR IRON IS 300 µg/L• 65.1(31.5J) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION ) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 0 0 01000300300 1 0 0 0 1 0 0 0 3 0 0 3 0 0 1 0 0 0 1 0 0 0 10000 10000 3 0 030 0 10000 10000 1 0 0 0100 0 3 0 0300 300300 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D2,120 (1,900 ) GWA-12D82.3 (51 ) BG-5D˂50U (˂50U) BG-1D54.2 (˂50U) MW-23D850 (45J) AB-5D1,080 (972 ) MW-11D41.2J (˂50U) GWA-7D1,880 (1,700 ) GWA-14D188 (190 )AS-8D1,020 (796 ) AB-25D260 (˂50U) GWA-15D˂50U (˂50U ) GWA-6D10,100 (6,900 ) AB-10D110 (67.3 ) MW-12D1,430 (1,530 ) GWA-8D143 (96.6 ) AB-30D220 (134 ) GWA-4D˂50U (˂50U) GWA-1D˂50U (˂50U) AS-2D2,290 (2,080 ) GWA-11D2,410 (2,340 ) MW-9D403 (46.7J) OW-308D31,400 (28,700 ) MW-318D239 (308 ) GWA-10D283 (219 ) MW-10D130 (126 ) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS IRON ISOCONCENTRATION CONTOUR MAP - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.23 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR IRON IS 300 µg/L• 65.1(31.5J) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION ) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 11 00 00 00 3 3 0 0 00 33 00 00 330000 11000000 330000 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m MW-23BR1,130 (890 )AS-8BR161 (148 ) AB-25BR78.1 (˂50U) AB-30BR325 (153 )MW-308BR7,930 (7,660 ) MW-22BR168 (142 ) GWA-5BR201 (171 ) MW-315BR130 (73.4 ) MW-317BR46.8J (˂50U) AB-35BR102J+ (99.8 ) MW-314BR165 (102 ) MW-310BR25.7J (˂50U) MW-311BR726 (337 ) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS IRON ISOCONCENTRATION CONTOUR MAP - BED ROCK WELLS (B R) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.24 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR IRON IS 300 µg/L• 65.1(31.5J) TOTAL CONCENTRATION (DISSOLVED CONCENTRATION ) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS 5500 1 0 0 0 1 0 0 05 0 0 5 0 0 5 5 0 0 55 00 5500 5500 0 0 55 00 11 00 0000 550000 5 5 00 5500 5 050 55 0000 5500 55 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream AB-5 S1,400 (1,330 ) AB-2 5S26.3 (18.3 ) AB-1 0S1,020 (927 ) AB-1 0SL371 (371 ) GWA-9S76.3 (71 ) GWA-12S23.7 (17 ) BG-5S˂5U (˂5U) GWA-14S535 (1,530 ) GWA-7S862 (970 ) GWA-1S43.4 (47.1 ) GWA-8S55.7 (82.3 ) MW-12276 (258 ) GWA-6S2,720 (2,340 ) AB-30S1,500 (1,420 ) GWA-4S475 (456 ) GWA-11S310 (371 ) AS-12S135 (123 ) MW-11966 (888 ) MANGANESE ISOCONC ENTRATION CONTOU R MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.25 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR MANGANESE IS 50 µg/L• 39.5(45.3) TOTAL CONCENTR ATION (DISSOLVED CON CENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 5 5 0 0 0 0 5050 500500 11 000000 55 00 00 5050 10001000 1100 0 0 0 0 55 0 0 0 0 11 00 0000 55 0000 5050 55 0000 550000 55 0000 5 050 5050 5050 5500 5050 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D520 (480 ) GWA-12D31.1 (28 ) BG-5D13.9 (41 ) BG-1D˂5U (˂5U) MW-23D10.2 (˂5U) AB-5D1,490 (1,500 ) MW-11D152 (144 ) GWA-7D906 (863 ) GWA-14D334 (331 )AS-8D668 (933 ) AB-25D324 (251 ) GWA-15D20.5 (24 ) GWA-6D1,490 (1,070 ) AB-10D3.8J (8.8 ) MW-12D685 (663 ) GWA-8D1,120 (1,080 ) AB-30D520 (453 ) GWA-4D18 (32.6 ) GWA-1D2.8J (˂5U) AS-2D2,350 (2,070 ) GWA-11D897 (854 ) MW-9D489 (452 ) OW-308D448 (416 ) MW-318D129 (166 ) GWA-10D350 (357 ) MW-10D1,000 (915 ) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS MANGANESE ISOCONC ENTRATION CONTOU R MAP - D EEP WELLS (D ) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.26 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR MANGANESE IS 50 µg/L• 39.5(45.3) TOTAL CONCENTR ATION (DISSOLVED CON CENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 5 5 0 0 0 0 500500 500500 5500 00 550000 5050 500500 11 00 00 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m MW-23BR25 (25 )AS-8BR892 (966 ) AB-25BR68.8 (62.2 ) AB-30BR515 (502 )MW-308BR7,460 (7,290 ) MW-22BR242 (232 ) GWA-5BR734 (692 )MW-315BR526 (794 ) MW-317BR6.8 (4.1J) AB-35BR286 (279 ) MW-314BR157 (122 ) MW-310BR101 (143 ) MW-311BR611 (423 ) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS MANGANESE ISOCONC ENTRATION CONTOU R MAP - B EDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.27 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR MANGANESE IS 50 µg/L• 39.5(45.3) TOTAL CONCENTR ATION (DISSOLVED CON CENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S152,000 AB-2 5S68,700 AB-1 0S28,300AB-1 0SL37,900 GWA-9S4,100 GWA-12S24,900 BG-5S33,600 GWA-7S210,000 GWA-1S3,200 GWA-8S176,000 MW-128,400 GWA-6S10,400 AB-30S82,700 GWA-14S21,900GWA-4S47,000 GWA-11S4,700J+ AS-12S78,300 SULFATE ISOCONCEN TRATION C ON TOUR MAP - SHA LLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.28 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR SULFATE IS 250,000 µg/L• 24,400 RESULTS ARE TOTAL R EC OVERABLE CONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 225500 00 0 0 0 0 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D7,100 GWA-12D19,600MW-23D20,300 BG-1D106,000 BG-5D34,100 AB-5D77,500 MW-11D76,800 GWA-7D106,000 GWA-14D106,000AS-8D20,900 AB-25D84,600 GWA-15D148,000 GWA-6D61,000 AB-10D26,500 MW-12D29,000 GWA-8D388,000 AB-30D92,000 GWA-4D42,500 GWA-1D20,000 AS-2D179,000 GWA-11D40,500 MW-9D97,600 OW-308D108,000 MW-318D103,000 GWA-10D61,200 MW-10D41,500 AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS SULFATE ISOCONCEN TRATION C ON TOUR MAP - DEEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.29 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR SULFATE IS 250,000 µg/L• 24,400 RESULTS ARE TOTAL R EC OVERABLE CONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 2 2 5 5 0 0 00 00 00 500000500000 22 55 00 0000 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR11,300 AS-8BR69,500 AB-25BR98,000 AB-30BR123,000 MW-308BR811,000 MW-22BR42,100 GWA-5BR419,000 MW-315BR44,900 MW-317BR12,100 AB-35BR121,000 MW-314BR80,000 MW-310BR5,800 MW-311BR46,900 BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS SULFATE ISOCONCEN TRATION C ON TOUR MAP - BED ROCK WELLS (B R) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.30 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR SULFATE IS 250,000 µg/L• 24,400 RESULTS ARE TOTAL R EC OVERABLE CONCENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S352,000 AB-2 5S229,000 AB-1 0S209,000AB-1 0SL254,000 GWA-9S70,000 GWA-12S109,000 BG-5S165,000 GWA-7S361,000 GWA-1S81,000 GWA-8S366,000 MW-1241,000 GWA-6S304,000 AB-30S169,000 GWA-14S101,000GWA-4S155,000 GWA-11S70,000 AS-12S302,000 TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOU R MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.31 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR TDS IS 500,000 µg/L• 169,000J RESULTS ARE TOTAL RECOVERABLE CONC ENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 55 000000 0 0 0 0 550000 00 00 00 5500 00 00 0 0 0 0 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D81,000 GWA-12D260,000 BG-5D165,000 BG-1D281,000 MW-23D82,000 AB-5D340,000 MW-11D283,000 GWA-7D256,000 GWA-14D354,000AS-8D193,000 AB-25D223,000 GWA-15D357,000 GWA-6D261,000 AB-10D174,000 MW-12D146,000 GWA-8D721,000 AB-30D295,000 GWA-4D132,000 GWA-1D522,000 AS-2D531,000 GWA-11D257,000 MW-9D204,000 OW-308D240,000 MW-318D252,000 GWA-10D185,000 MW-10D195,000 AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOU R MAP - D EEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.32 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR TDS IS 500,000 µg/L• 169,000J RESULTS ARE TOTAL RECOVERABLE CONC ENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 55 00 00 00 0000 55000000 0 0 0 0 11 00 00 00 00 00 00 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream U nnamed S tream U n namedStream Unnam e dStream U n n a m e dStream MW-23BR245,000 AS-8BR293,000 AB-25BR259,000 AB-30BR426,000 MW-308BR1,400,000 MW-22BR226,000 GWA-5BR796,000 MW-315BR248,000 MW-317BR307,000 AB-35BR428,000 MW-314BR247,000 MW-310BR192,000 MW-311BR287,000 BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOU R MAP - B EDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION NC 2L STAND ARD CONTOUR (DASH ED WHEREINFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.33 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER NC 2L STAN DARD FOR TDS IS 500,000 µg/L• 169,000J RESULTS ARE TOTAL RECOVERABLE CONC ENTRATIONS. DISSOLVED CON CENTRATIONS W ER E NOT ANALYZED FOR N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &<&< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 11 00..33 11 11 00 ..33 0 .30.3 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9S0.1J (˂0.3U) GWA-12S2.7 (0.23J) BG-5S0.2J (0.13J) GWA-14S0.23J+ (0.67J+) GWA-7S0.2J (0.097J) GWA-1S0.17J (0.36J+) GWA-8S1.2 (0.64 ) MW-120.11J (0.092J+) GWA-6S˂3U (˂3U) AB-30S0.33 (0.11J+) GWA-4S0.25J+ (0.12J+) GWA-11S0.23J (0.29J+) AS-12S0.2J (0.22J+) MW-115.3 (0.79J+) BG-10SNS GWA-10SNS GWA-15SNS GWA-16SNS GWA-20SNS GWA-2SNS GWA-3SNS MW-20SNS MW-21SNS MW-22SNS MW-10NS MW-9NS AB-5 S0.71J (˂3U) AB-2 5S55.9 (54.5 ) AB-1 0S2.2 (0.98 )AB-1 0SL4.4 (3.6 ) VANAD IUM ISOCONCENTRATION CONTOU R MAP - SHALLOW WELLS (S) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.34 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 µg/L• 15(17.2) TOTAL C ONCENTRATION (DISSOLVED CONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 0.3 0.3 1 1 1 1 00 ..33 11 00..33 00..33 0 0 ..33 1100..33 00 ..33 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unn a m e d S t r e a m U n n a m edStream GWA-9D˂0.3U (˂0.3U) GWA-12D3.5 (4.9 ) BG-5D0.11J (0.1J) BG-1D20.1 (28.9 ) MW-23D1.1 (0.13J) AB-5D˂3U (0.97J) MW-11D0.77J (˂3U) GWA-7D˂0.3U (˂0.3U) GWA-14D˂3U (˂3U)AS-8D0.13J (0.33J+) AB-25D0.46 (0.15J+) GWA-15D˂3U (˂3U) GWA-6D0.32 (0.24J) AB-10D0.89 (1.8 ) MW-12D0.2J (0.18J+) GWA-8D˂3U (1J) AB-30D˂3U (˂3U) GWA-4D0.18J+ (0.2J+) GWA-1D3.5 (3.6 ) AS-2D˂3U (0.96J+) GWA-11D˂3U (˂3U) MW-9D2.3 (0.34J+) OW-308D0.32 (0.3UJ) MW-318D0.087J (0.2J+) GWA-10D0.2J+ (0.16J+) MW-10D0.19J+ (0.15J) AS-10DNS AS-12DNS AS-4DNS AS-6DNS BG-10DNS GWA-16DNS GWA-17DNS GWA-18DNS GWA-20DNS GWA-2DNS GWA-3DNS MW-20DNS MW-21DNS MW-22DNS VANAD IUM ISOCONCENTRATION CONTOU R MAP - D EEP WELLS (D) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<VOLUNTARY GROUNDWATER MONITORIN G WELLIDENTIFICATION AN D LOCATION &<COMPLIANCE GROUNDWATER MONITOR ING WELLIDENTIFICATION AN D LOCATION &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY ASH BASIN WASTE ASH BASIN COMPLIANC E ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY !(WATER SUPPLY WELL NOT SAMPLED BY DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.35 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 µg/L• 15(17.2) TOTAL C ONCENTRATION (DISSOLVED CONCENTRATION) N 58 0 5 0 0 530 500 5 2 0 5 2 0 5 0 0 5 6 0 5 0 0 600 510 5 0 0 5 6 0 560 6 1 0 5 7 0 6 0 0 5 4 0 4 9 0 590 5 60 5 9 0 560 58 0 610 5 2 0 5 7 0 520 5 0 0 6 1 0 5 4 0 5 6 0 5 5 0 50 0 570 530 5 7 0 5 1 0 570 530 6 2 0 5 80 50 0 5 1 0 54 0 5 2 0 5 6 0 53 0 59 0 5 1 0 5 5 0 55 0 60 0 5 3 0 580 5 3 0 5 2 0 5 3 0 5 4 0 590 5 2 0 530 650 520 5 2 0 5 7 0 54 0 530 60 0 5 3 0 5 6 0 5 4 0 5 9 0 5 2 0 530 5 20 5 5 0620 550 5 4 0 610 600 540 520 5 4 0 5 6 0 5 9 0 530 560 5 1 0 530 580 5 5 0 640 570 5 7 0 5 6 0 560 5 0 0 600 5 1 0 5 5 0 560 540 530 5 4 0 6 30 620 540 50 0 5 6 0 61 0 5 20 510 5 2 0 5 6 0 5 1 0 5 6 0 550 530 55 0 5 2 0 5 3 0 550 590 530 490 540 &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< &< !( D D a a n n R R i i v v e e r r ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAMSTATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARY CELL ASH STORAGE 1 11 11 0.30.3 00..33 00..33 1 S R - 1 7 7 9 S R -1 7 7 9 U n n a m e d S t r e a m U n n a m e d S t r e a m U n n a m e dStream U n n a m e d S t r e a m T o w n C r e e k (S h a r p s L a k e ) Unnamed Stream Unnamed Stream Unna m e d Strea m U n namedStream Unna m e dStream U n n a m e d S t r e a m MW-23BR˂3U (˂3U)AS-8BR0.8J (˂3U) AB-25BR0.24J (0.22J+) AB-30BR˂3U (˂3U)MW-308BR˂3U (˂3U) MW-22BR0.17J (0.21J+) GWA-5BR˂3U (0.71J+) MW-315BR˂3U (0.72J+) MW-317BR6.6 (6.7 ) AB-35BR˂3U (0.78J+) MW-314BR0.49 (0.14J+) MW-310BR0.096J+ (0.21J) MW-311BR1.1J (˂3U) BG-10BRNS GWA-5BRDNS GWA-8BRNS MW-301BRNS MW-303BRNS MW-306BRNS MW-317BRDNS VANAD IUM ISOCONCENTRATION CONTOU R MAP - B EDROCK WELLS (BR) ROCKINGHAM COUN TY, NORTH CAROLINA LEGEND: &<GR OU NDWATER ASSESSMENT MONITORING WELLIDENTIFICATION AN D LOCATION IMAC CONTOUR (DASHED WH ERE INFERRED) ISOCONC ENTRATION C ON TOUR ABOVESTANDARD (DASHED WHERE INFERRED) DUKE EN ERGY PR OPERTY BOUN DARY ASH BASIN WASTE BOU ND ARY ASH BASIN COMPLIANC E BOU NDARY ASH BASIN COMPLIANC E BOU NDARY COIN CIDENTWITH DU KE ENERG Y PROPERTY BOU ND ARY STREAMS 10 FOOT SURVEY CONTOU RS !(WATER SUPPLY WELL NOT SAMPLED BY N CD EQ DUKE EN ERGY CAROLINA S, LLCDAN R IVER STEA M STATION ASH BASIN 300 0 300 600 SCALE (FEET) DATE FIGURE AUGUST 2016 3-4.36 NOTES: • ALL CONCENTRATION S REPORTED IN MICR OGRAMS PER LITER (µg/L)• CONTOURS GENERATED U SING GROUND WATER RESULTS• GROU NDWATER SAMPLING TOOK PLAC E BETWEEN FEBRUARY TO APRIL 2016, AND DO NOT REPRESENT A SYNOPTIC GROUNDWATER SAMPLING EVENT• PARCEL DATA FOR TH E SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AN D IS APPROXIMATE• ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014)• THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCOR DING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a)• HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MIN UTE SERIES TOPOGRAPHIC MAPS AND ON-SITE OBSERVATION S• TOPOGRAPHY DATA FOR ON-SITE WAS OBTAINED FROM WSP (D ATED 2015)• TOPOGRAPHY DATA FOR OFF-SITE WAS OBTAINED FROM NCDOT GIS WEBSITE (D ATED 2007)• POREWATER CON CENTR ATIONS ARE SH OWN IN BLUE FOR REFEREN CE PURPOSES, BUT NOT UTILIZED FOR CONTOURING.• NS - NOT SAMPLED D URING THE ROUND 5 SAMPLING EVENT • B41/49 WSW W ELL ID (NC DEQ ID /COMPREHENSIVE SITE ASSESSMENT ID)• GROU NDWATER ASSESSMENT MONITORING WELLS SCREENED WITHIN ASH BASIN POREWATER ARE NOT INCLUD ED ON THIS MAP• ONLY MONITOR ING WELLS SC REEN ED WITHIN GROUN DWATER HAVE BEEN U SED TO GENERATE ISOCONCENTR ATION CONTOUR S ON THIS MAP • U LESS THAN LABORATORY REPORTING LIMIT• J ESTIMATED CONCENTRATION• J+ ESTIMATED CON CENTRATION (BIASED HIGH)• J- ESTIMATED C ONCENTRATION (BIASED LOW) • GROUND WATER INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 µg/L• 15(17.2) TOTAL C ONCENTRATION (DISSOLVED CONCENTRATION) N &<&<&< &<&<&< &<&<&< &<&<&< &< &< &< &< &< &<&< &<&<&< &< &<&< &<&< &<&<&<&< &<&< &<&<&<&< &<&<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&<&< &<&< &< &< &< &< &< &< &< &<&< &< &<&<&< &<&< &<&< &<&< &< &<&< &<&< &<&< &<&< ASHSTORAGE 1 ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTEAM STATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARYCELL DANRIVER AB-10SL AB-25S AB-30BRAB-5D MW-22BR AB-10D AB-10S AB-25BRAB-25D AB-30DAB-30SAB-35BR AB-5S AS-10D AS-12D AS-2D AS-4D AS-6D AS-8BRAS-8D BG-1D BG-5DBG-5S GWA-10DGWA-10S GWA-11D GWA-11S GWA-12DGWA-12S GWA-1DGWA-1S GWA-2DGWA-2S GWA-3D GWA-3S GWA-6DGWA-6S GWA-7DGWA-7S GWA-8DGWA-8S GWA-9DGWA-9S MW-23BR MW-301BR MW-303BR MW-306BR MW-308BR MW-310BR MW-311BR MW-314BR MW-315BR MW-317BR MW-318D SW-2 MW-20DMW-20S MW-22DMW-22S MW-23D MW-10MW-10D MW-12MW-12D MW-9 MW-9D BG-10BRBG-10D BG-10S GWA-18D GWA-20DGWA-20S MW-317BRL GWA-8BR A D B B'C D'C' A' 540530520 5 9 0 5 5 0 560 510 5 9 0 5 7 0 5 9 0 5 8 0 5 5 0 5 4 0 570 5 3 0 5 7 056 0 5 5 0 5 0 0 550520 500 5 4 0520510 5 0 0 610 600590580 5 3 0 5 2 0 510 500 560550 5 4 0 5 3 0 5 1 0 5 0 0 5 7 0 640 5 6 0 560 4 9 0 5 1 0 5 0 0 5 6 0 5 4 0 5 2 0 5 3 0 6 1 0 600 6 0 0 560 5 6 0 560 5 6 0 5 5 0 5 5 0 5 3 0 5 4 0 530 5 2 0 5 3 0 5 2 0 490 600 5 6 0 5 6 0560 5 6 0 550 5 3 0 5 3 0540 5 2 0 5 1 0 5 2 0 5 2 0 5 0 0 5 9 0 5 4 0 SR-1953 S R -1 9 6 2 S R - 1 7 7 9 S R -1 7 7 9 DATE FIGURE SEPTEMBER 2016 3-5.1 NOTES:1. AERIAL IMAGERY IS A COMBINATION OF NC ONEMAP (2010) AND A WSP AERIAL SURVEY (2014)2. TEN FOOT TOPOGRAPHICAL CONTOURS OBTAINED FROM 2015 WSP SURVEY DATA3. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a)5. WASTE BOUNDARY IS APPROXIMATE.6. AS-BUILT CAMA ASSESSMENT AND NPDES SERIES MONITORING WELLS ARE PROVIDED BY DUKE ENERGY, WSP, AND OTHERS7. CAMA H/V DELINEATION WELL LOCATIONS (BLUE LABELS) ARE APPROXIMATE AND HAVE NOT BEEN SURVEYED8. GREEN LABELS INDICATE AN ADDITIONAL ASSESSMENT WELL COMPLETED POST-CSA9. FOR MORE DETAILS REGARDING INDIVIDUAL WATER SUPPLY WELLS, SEE THE WATER SUPPLY WELL ANALYTICAL RESULTS MAP N 0 500 1,000 1,500Feet LEGEND &<CAMA AS SESS MEN T GRO UND WATE RMONITORING W ELL &<NPDE S C OM PLIA NCE GR OUN DWATERMONITORING W ELL &<NPDE S V OLUN TARY GR OUN DWATERMONITORING W ELL ASH BAS IN CO MPL IAN CE BOU NDA RY ASH BAS IN CO MPL IAN CE BOU NDA RYCOINCIDENT WITH DU KE ENE RGYPROPERTY BOU NDA RY ASH BAS IN WA STE BOU NDARY ASH STORAG E; LC ID LAN DFILLBOUNDARY DUKE EN ERG Y PRO PERTY BO UND ARY ROAD S 10' TO POG RAPH Y HYDROGR APHY TR ANSECTS SITE CROSS SECTION LOCATION SDUKE EN ERGY C AROLIN AS, LLCDAN R IVER STEAM STATION ROCKINGHAM COUN TY, NORTH CARO LINA &<&<&< &<&<&< &<&<&< &< &<&< &< &< &< &< &< &<&< &<&< &< &<&< &<&< &<&<&<&< &<&< &<&< &<&< &<&<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&< &< &<&< &<&< &< &< &< &< &< &< &< &< &< &< &<&< &<&< &<&< &<&< &<&< &<&< &<&< &<&< MW-11MW-11D MW-21SMW-21D GWA-4SGWA-4D GWA-15SGWA-15D GWA-14SGWA-14D GWA-5BR GWA-16SGWA-16DGWA-5BRD 4 9 0 5 2 0 5 3 0 5 0 0 5 0 0 5 0 0 4 9 0 520 5 2 0 5 1 0 5 0 0 5 2 0 4 9 0 530 4 9 0 4 9 0 5 2 0 510 5 0 0 5 0 0 5 1 0 5 2 0 5 1 0 5 0 0 5 0 0 5 3 0 5 3 0 4 9 0 A NORTHWEST 650 Z BG-10BR O BG-10D a BG-10S 600 J REC ROD uurowyy 0.100 OW 100 28.5 (561.7) 40.0 (55U) 44.2 (546.0) REC ROD W Lll." 0b100 0to 100 39.5 (55 ) 50.0(545 7) 55550 60.0(535.7) 700(5257) REC ROD 0.10G 0 to 100 fi!!■�R3 SDD 30.0 (5322) Bp.O (515. ]) �rJ■�IIIII{II�II ss� ip,isa MINE- 40.01622.2) 90.0 (505 ])L 45.01517.2) 100.0 (4B6.7)^i■' 450 105.4 (490.3)- 400 L 0 CROSS SECTION NOTES: 1. GROUND WATER LEVEL MEASUREMENTS WERE TAKEN ON JUNE 12, 2016. DEPTH TO WATER WAS MEASURED WITH AN ELECTRIC PROBE FROM BELOW TOP OF CASING AND WAS RECORDED WITHIN 0.01 FEET. WATER LEVELS PRESENTED ON CROSS SECTIONS ARE FROM SHALLOW WELLS ONLY AND REPRESENT THE WATER TABLE. SHALLOW WATER LEVELS WERE NOT MEASURED FOR BG-10S, MW-21S, MW-22S, GWA-20S, OR GWA-17S. WATER TABLE SYMBOLOGY IS PRESENTED BELOW. 4 2. RECOVERY (REC) AND ROCK QUALITY DESIGNATION (RQD) ARE MEASUREMENTS OF THE QUALITY OF ROCK CORE RECOVERED FROM A BOREHOLE. 3. STANDARD PENETRATION TESTING (SPT), REC AND RQD WERE THE PRIMARY SOURCES OF DATA USED IN THE DETERMINATION/ASSIGNMENT OF HYDROSTRATIGRAPHIC LAYERS TO NATURAL MATERIALS (ALLUVIUM, SOIL, SAPROLITE, AND ROCK) IN A BOREHOLE; REVIEWS OF THE BOREHOLE LOGS, FIELD PHOTOGRAPHS, AND GEOLOGIC JUDGMENT WERE ALSO USED IN THE DETERMINATION/ASSIGNMENT OF F)l HDR Engineering, Inc. of the Carolinas N.C.B.E.L.S. License Number: F-0116 440 S. Church Street, Suite 900 Charlotte, NC 28202-2075 704.338.6700 20D (ABANDONED) -20S (ABANDONED) AB-30D AB-30BR AB-30S- ASH BASIN SECONDARY CELL 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 REC DISTANCE (ft) Rao 58.0 (a61s. ) otoo oto loo 60.0 (469.6) 70.0 (459.8) 80.0 (449.6) 90.0 (439.6) 100.0 (429.6) 110.0 (419.6) 115.0 (414.6) HYDROSTRATIGRAPHIC LAYERS. PLEASE REFER TO THE HYDROSTRATIGRAPHIC LEGEND FOR MORE DETAILS. 4. TOP OF CASING IS NOT PRESENTED HEREIN FOR WELL CONSTRUCTION GRAPHICS. PLEASE SEE APPENDIX H OF THE COMPREHENSIVE SITE ASSESSMENT (AUGUST 2015) AND APPENDIX A OF CSA SUPPLEMENT 2 FOR WELL CONSTRUCTION RECORDS AND GEOLOGIC BORING LOGS. 5. BEDROCK (BR -DESIGNATED) WELLS WERE SCREENED ACROSS INTERPRETED WATER -BEARING FRACTURE ZONES BASED ON EXAMINATION OF THE ROCK CORE AND ROCK PACKER TESTING WHERE PERFORMED. PROJECT MANAGER SECTION SCALE: HORIZ 1 "=400' - VERT 1"=100' WELL GRAPHIC LEGEND AS-10D WELL CASING WELL SCREEN GROUT BACKFILL DRAWN BY: DESIGNED BY: CHECKED BY: APPROVED BY: ISSUE DATE DESCRIPTION PROJECT NUMBER 000000000266731 NOT FOR CONSTRUCTION LITHOLOGY - RECOVERY (REC) - ROCK QUALITY DESIGNATION (RQD) CHART WITH DEPTHS NOTED REC RQD Litholoyy 0 to 100 0 to 100 53.0 (414.5) 60.0 (507.5) 70.0 (497.5) 800 (487.5 90.0 (477.5) _zrj 100.0 (467.5) _ 104.3 (463.2) LITHOLOGY LEGEND: CONGLOMERATE MUDSTONE SANDSTONE SHALE SILTSTONE DUKE ENERGY CAROLINAS,LLC DUKE DAN RIVER STEAM STATION ENERGY ROCKINGHAM COUNTY NORTH CAROLINA A' SOUTHEAST 650 600 550 500 450 400 4000 STRATIGRAPHY LEGEND ■ WATER ■ A - ASH ■ F - FILL S - ALLUVIUM IC EW ❑ M1 - SOIL/SAPROLITE WHERE FIELD BLOWCOUNTS A (N-VALUE) MEASURED DURING STANDARD PENETRATION TESTING (SPT) IS LESS THAN 50 BLOWS PER FOOT (I.E. N<50 BPF) ❑ M2 - SAPROLITE/WEATHERED ROCK WHERE N>50 BPF OR REC <50% ❑ TZ - (TRANSITION ZONE) PARTIALLY WEATHERED ROCK WHERE RECOVERY >50% AND RQD <50% ❑ BR - SOUND ROCK WHERE REC > 85% AND RQD >50% CROSS SECTION A -A' 0 1/2" 1" FILENAME 3-5.2.DWG SHEET SCALE AS NOTED 3-5•2 RED ROD 59.0 (549 70.0 (538 74.0 (534 360 (532.4) 40.0 (52SA) 50.0 (518.4) 60.0 (508.4) 70.0 (498.4) 80.0 (468.4) 900 (478:4) 100o (468.4) 11M0 (458.4) 120.0 (448.4) 130D (438.4) 140.0 (428.4) 1500 (418.4) 160.0 (408.4) 170D (398.4) 180.0 (388.4) 189.8 (378.6) CROSS SECTION NOTES: 1. GROUND WATER LEVEL MEASUREMENTS WERE TAKEN ON JUNE 12, 2016. DEPTH TO WATER WAS MEASURED WITH AN ELECTRIC PROBE FROM BELOW TOP OF CASING AND WAS RECORDED WITHIN 0.01 FEET. WATER LEVELS PRESENTED ON CROSS SECTIONS ARE FROM SHALLOW WELLS ONLY AND REPRESENT THE WATER TABLE. SHALLOW WATER LEVELS WERE NOT MEASURED FOR BG-10S, MW-21S, MW-22S, GWA-20S, OR GWA-17S. WATER TABLE SYMBOLOGY IS PRESENTED BELOW. 2. RECOVERY (REC) AND ROCK QUALITY DESIGNATION (RQD) ARE MEASUREMENTS OF THE QUALITY OF ROCK CORE RECOVERED FROM A BOREHOLE. 3. STANDARD PENETRATION TESTING (SPT), REC AND RQD WERE THE PRIMARY SOURCES OF DATA USED IN THE DETERMINATION/ASSIGNMENT OF HYDROSTRATIGRAPHIC LAYERS TO NATURAL MATERIALS (ALLUVIUM, SOIL, SAPROLITE, AND ROCK) IN A BOREHOLE; REVIEWS OF THE BOREHOLE LOGS, FIELD PHOTOGRAPHS, AND GEOLOGIC JUDGMENT WERE ALSO USED IN THE DETERMINATION/ASSIGNMENT OF HYDROSTRATIGRAPHIC LAYERS. PLEASE REFER TO THE HYDROSTRATIGRAPHIC LEGEND FOR MORE DETAILS. 4. TOP OF CASING IS NOT PRESENTED HEREIN FOR WELL CONSTRUCTION GRAPHICS. PLEASE SEE APPENDIX H OF THE COMPREHENSIVE SITE ASSESSMENT (AUGUST 2015) AND APPENDIX A OF CSA SUPPLEMENT 2 FOR WELL CONSTRUCTION RECORDS AND GEOLOGIC BORING LOGS. 5. BEDROCK (BR -DESIGNATED) WELLS WERE SCREENED ACROSS INTERPRETED WATER -BEARING FRACTURE ZONES BASED ON EXAMINATION OF THE ROCK CORE AND ROCK PACKER TESTING WHERE PERFORMED. SECTION SCALE: HORIZ 1 "=400' - VERT 1"=100' WELL GRAPHIC LEGEND AS-SBR WELL CASING WELL SCREEN GROUT BACKFILL PROJECT MANAGER DRAWN BY: DESIGNED BY: F)j HDR Engineering, Inc. of the Carolinas CHECKED BY: N.C.B.E.L.S. License Number: F-0116 APPROVED BY: 440 S. Church Street, Suite 900 Charlotte, NC 28202-2075 704.338.6700 ISSUE DATE DESCRIPTION PROJECT NUMBER 1 000000000266731 NOT FOR CONSTRUCTION LITHOLOGY - RECOVERY (REC) - ROCK QUALITY DESIGNATION (ROD) CHART WITH DEPTHS NOTED REC RQD Litholo9y 0 to 100 0 to 100 53.0 (414.5) 60.0 (507.5) 70.0 (497.5) 80.0 (487.5) 90.0 (477.5) 100.0 (467.5) 104.3 (463.2) GENERAL LEGEND AREA OF 2L EXCEEDACES (DASHED WHERE (DASHED WHERE INFERRED) LITHOLOGY LEGEND: CONGLOMERATE - MUDSTONE SANDSTONE SHALE SILTSTONE DUKE ENERGY CAROLINAS,LLC DUKE DAN RIVER STEAM STATION ENERGY ROCKINGHAM COUNTY NORTH CAROLINA 3' ;T D 650 600 550 Z O Q 500 J W 450 400 350 IC• It] STRATIGRAPHY LEGEND ■ WATER ■ A - ASH ■ F - FILL S - ALLUVIUM ❑ M1 - SOIL/SAPROLITE WHERE FIELD BLOWCOUNTS A (N-VALUE) MEASURED DURING STANDARD PENETRATION TESTING (SPT) IS LESS THAN 50 BLOWS PER FOOT (I.E. N<50 BPF) ❑ M2 - SAPROLITE/WEATHERED ROCK. WHERE N>50 BPF OR REC <50% ■ TZ - (TRANSITION ZONE) PARTIALLY WEATHERED ROCK WHERE RECOVERY >50% AND RQD <50% ❑ BR - SOUND ROCK WHERE REC > 85% AND RQD >50% CROSS SECTION B-B' 0 1/2" 1" FILENAME 3-5.3.DWG SHEET SCALE AS NOTED 3-5.3 CROSS SECTION NOTES: 1. GROUND WATER LEVEL MEASUREMENTS WERE TAKEN ON JUNE 12, 2016. DEPTH TO WATER WAS MEASURED WITH AN ELECTRIC PROBE FROM BELOW TOP OF CASING AND WAS RECORDED WITHIN 0.01 FEET. WATER LEVELS PRESENTED ON CROSS SECTIONS ARE FROM SHALLOW WELLS ONLY AND REPRESENT THE WATER TABLE. SHALLOW WATER LEVELS WERE NOT MEASURED FOR BG-10S, MW-21S, MW-22S, GWA-20S, OR GWA-17S. WATER TABLE SYMBOLOGY IS PRESENTED BELOW. 2. RECOVERY (REC) AND ROCK QUALITY DESIGNATION (RQD) ARE MEASUREMENTS OF THE QUALITY OF ROCK CORE RECOVERED FROM A BOREHOLE. 3. STANDARD PENETRATION TESTING (SPT), REC AND RQD WERE THE PRIMARY SOURCES OF DATA USED IN THE DETERMINATION/ASSIGNMENT OF HYDROSTRATIGRAPHIC LAYERS TO NATURAL MATERIALS (ALLUVIUM, SOIL, SAPROLITE, AND ROCK) IN A BOREHOLE; REVIEWS OF THE BOREHOLE LOGS, FIELD PHOTOGRAPHS, AND GEOLOGIC JUDGMENT WERE ALSO USED IN THE DETERMINATION/ASSIGNMENT OF G C, NORTH SOUTH Rnn Rnn 46.0 (494.1) 500 (4so.1) soo("0.1) 70.0 (470.1) a0.0 (460.1) 900 (450.1) 99.0 (441.1) 79.0 (460.4) 90.0 (449.4) 100.0 0114 110.0 (429.4) 120.0 (419.4) 1300 (409.4) 140.0 (399.4) 149.0 (390.4) HYDROSTRATIGRAPHIC LAYERS. PLEASE REFER TO THE HYDROSTRATIGRAPHIC LEGEND FOR MORE DETAILS. 4. TOP OF CASING IS NOT PRESENTED HEREIN FOR WELL CONSTRUCTION GRAPHICS. PLEASE SEE APPENDIX H OF THE COMPREHENSIVE SITE ASSESSMENT (AUGUST 2015) AND APPENDIX A OF CSA SUPPLEMENT 2 FOR WELL CONSTRUCTION RECORDS AND GEOLOGIC BORING LOGS. 5. BEDROCK (BR -DESIGNATED) WELLS WERE SCREENED ACROSS INTERPRETED WATER -BEARING FRACTURE ZONES BASED ON EXAMINATION OF THE ROCK CORE AND ROCK PACKER TESTING WHERE PERFORMED. SECTION SCALE: HORIZ 1 "=400' - VERT 1"=100' WELL GRAPHIC LEGEND AB-25BR WELL CASING WELL SCREEN GROUT BACKFILL PROJECT MANAGER DRAWN BY: DESIGNED BY: F)j HDR Engineering, Inc. of the Carolinas CHECKED BY: N.C.B.E.L.S. License Number: F-0116 APPROVED BY: 440 S. Church Street, Suite 900 Charlotte, NC 28202-2075 704.338.6700 ISSUE DATE DESCRIPTION PROJECTNUMBER 1 000000000266731 NOT FOR CONSTRUCTION LITHOLOGY - RECOVERY (REC) - ROCK QUALITY DESIGNATION (ROD) CHART WITH DEPTHS NOTED REC RQD Lithology 0 to 100 0 to 100 53.0 (414.5) 60.0 (507.5) 70.0 (497.5) 80.0 (487.5) 90.0 (477.5) s� 100.0 (467.5) 104.3 (463.2) W, C• 01 GENERAL LEGEND STRATIGRAPHY LEGEND AREA OF 2L EXCEEDANCES WATER (DASHED WHERE INFERRED) A -ASH ■ LITHOLOGY LEGEND: F - ■ FILL CONGLOMERATE ❑ S - ALLUVIUM MUDSTONE M1 - SOIL/SAPROLITE WHERE FIELD BLOWCOUNTS A ❑ (N-VALUE) MEASURED DURING STANDARD PENETRATION TESTING (SPT) IS LESS THAN 50 SANDSTONE BLOWS PER FOOT (I.E. N<50 BPF) ❑ M2 - SAPROLITE/WEATHERED ROCK. WHERE N>50 BPF OR REC <50% SHALE ■ TZ - (TRANSITION ZONE) PARTIALLY WEATHERED ROCK SILTSTONE WHERE RECOVERY >50% AND RQD <50% ❑ BR - SOUND ROCK WHERE REC > 85% AND RQD >50% DUKE ENERGY CAROLINAS,LLC DUKE DAN RIVER STEAM STATION ENERGY ROCKINGHAM COUNTY NORTH CAROLINA CROSS SECTION C-C' 0 1)2" y- FILENAME 3-5.4.DWG SHEET C A SCALE AS NOTED 3-G•A D NORTHEAST 600r 550 o GWA-17D 500 REC ROD 0 to too o 20.0 (491.5) u,noq,gy to10o 3a.5 (481.0) 450 REC ROD uNorogy o.100 a to 1 a0 41.0 (483.1) 50.0 I474.1) 56.0 (468.11 400 350L 0 CROSS SECTION NOTES: 1. GROUND WATER LEVEL MEASUREMENTS WERE TAKEN ON JUNE 12, 2016. DEPTH TO WATER WAS MEASURED WITH AN ELECTRIC PROBE FROM BELOW TOP OF CASING AND WAS RECORDED WITHIN 0.01 FEET. WATER LEVELS PRESENTED ON CROSS SECTIONS ARE FROM SHALLOW WELLS ONLY AND REPRESENT THE WATER TABLE. SHALLOW WATER LEVELS WERE NOT MEASURED FOR BG-10S, MW-21S, MW-22S, GWA-20S, OR GWA-17S. WATER TABLE SYMBOLOGY IS PRESENTED BELOW. 2. RECOVERY (REC) AND ROCK QUALITY DESIGNATION (RQD) ARE MEASUREMENTS OF THE QUALITY OF ROCK CORE RECOVERED FROM A BOREHOLE. 3. STANDARD PENETRATION TESTING (SPT), REC AND RQD WERE THE PRIMARY SOURCES OF DATA USED IN THE DETERMINATION/ASSIGNMENT OF HYDROSTRATIGRAPHIC LAYERS TO NATURAL MATERIALS (ALLUVIUM, SOIL, SAPROLITE, AND ROCK) IN A BOREHOLE; REVIEWS OF THE BOREHOLE LOGS, FIELD PHOTOGRAPHS, AND GEOLOGIC JUDGMENT WERE ALSO USED IN THE DETERMINATION/ASSIGNMENT OF FEZ HDR Engineering, Inc. of the Carolinas N.C.B.E.L.S. License Number: F-0116 440 S. Church Street, Suite 900 Charlotte, NC 28202-2075 704.338.6700 ASH BASIN SECONDARY CELL omREC ROD . - oo loo at, 4z.a (ass.a) 50.0 (478 B) 60.0(468.ai� 70.0 (458 a, 1111111 eo.0 (44e a, � 1111111 1111111 1 .0143a.9) 1111111 95.a (43318) 11111111 28.0 (474.0) 40.0 (462,0) 4aa (458.4) W-313D ASH BASIN PRIMARY CELL �--------' - - - - - - - - - - - - - - v 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 DISTANCE (FT) uuw REG ROD Oro 100 0to 100 79.0 (460.4) 80.0 (449.4) 100.0 (439.4) 11111 __ 110.0 (4294) 11111 120.0(419.4) 111111 130.0 (409.4) 140.0 (399.4) 149.0 (3W.4) HYDROSTRATIGRAPHIC LAYERS. PLEASE REFER TO THE HYDROSTRATIGRAPHIC LEGEND FOR MORE DETAILS. 4. TOP OF CASING IS NOT PRESENTED HEREIN FOR WELL CONSTRUCTION GRAPHICS. PLEASE SEE APPENDIX H OF THE COMPREHENSIVE SITE ASSESSMENT (AUGUST 2015) AND APPENDIX A OF CSA SUPPLEMENT 2 FOR WELL CONSTRUCTION RECORDS AND GEOLOGIC BORING LOGS. 5. BEDROCK (BR -DESIGNATED) WELLS WERE SCREENED ACROSS INTERPRETED WATER -BEARING FRACTURE ZONES BASED ON EXAMINATION OF THE ROCK CORE AND ROCK PACKER TESTING WHERE PERFORMED. PROJECT MANAGER SECTION SCALE: HORIZ 1 "=400' - VERT 1"=100' WELL GRAPHIC LEGEND GWA-4D WELL CASING WELL SCREEN GROUT BACKFILL DRAWN BY: DESIGNED BY: CHECKED BY: APPROVED BY: ISSUE DATE DESCRIPTION PROJECTNUMBER 000000000266731 NOT FOR CONSTRUCTION LITHOLOGY - RECOVERY (REC) - ROCK QUALITY DESIGNATION (ROD) CHART WITH DEPTHS NOTED REC ROD 53.0 (414.5) Litnology 0 to 100 0 to 100 60.0 (507.5) 70.0 (497.5) ®�1I� 80.0 (487.5) ii_ii__I 1I1!®tll 90.0 (477.5) NO 100.0 (467.5) 104.3 (463.2) REC ROD 0.100 0.100 I I O GENERAL NOTES: 1. AREAS OF 2L EXCEEDANCES WITH UNDETERMINED AREAS OF EXTENT BASED ON ISOCENTRATION CONTOURS IN MAP VIEW ARE SHOWN WITH A DASHED ZIG-ZAG BORDER. ME D SOUTHWEST � 600 B-25D 550 GWA-6S GWA-6D 500 ---------------------- DAN RIVE 450 ■C 400 350 3400 3600 3800 4000 4200 GENERAL LEGEND AREA OF 2L EXCEEDANCES Y✓/1/L/J (DASHED WHERE INFERRED) LITHOLOGY LEGEND: CONGLOMERATE MUDSTONE SANDSTONE SHALE SILTSTONE DUKE ENERGY CAROLINAS,LLC (> DUKE DAN RIVER STEAM STATION P ENERGY- ROCKINGHAM COUNTY NORTH CAROLINA ■E] STRATIGRAPHY LEGEND ■ WATER ■ A - ASH ■ F - FILL S - ALLUVIUM ❑ M1 - SOIL/SAPROLITE WHERE FIELD BLOWCOUNTS A (N-VALUE) MEASURED DURING STANDARD PENETRATION TESTING (SPT) IS LESS THAN 50 BLOWS PER FOOT (I.E. N<50 BPI) ❑ M2 - SAPROLITE/WEATHERED ROCK WHERE N>50 BPF OR REC <50% ■ TZ - (TRANSITION ZONE) PARTIALLY WEATHERED ROCK WHERE RECOVERY >50% AND RQD <50% ❑ BR - SOUND ROCK WHERE REC > 85% AND RQD >50% CROSS SECTION D-D' 0 1/2" 1" FILENAME 3-5.5.DWG SHEET CC� SCALE AS NOTED 3-5•5 o oco'� 10 �o <> Background Wells Porewater �y '6 owe �3k Surface Water , ems. 2 _ 170 Ur sw-i -25 O W8 O . �� Q� c x x x r 0 �Oo 'Po 00 le) ao Calcium CATIONS 0 o ryo ao CR 0 e Chloride+Nitrogen, NO2 plus NO3 ANIONS Samples with a charge balance error (CBE) of < 10% are shown. See companion table for CBE calculations. NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 62 used (assumes mostly nitrate). DATE PIPER DIAGRAM - BACKGROUND GROUNDWATER, SEPTEMBER 2016 POREWATER, AND SURFACE WATER DUKE ENERGY CAROLINAS, LLC FIGURE DAN RIVER STEAM STATION ASH BASIN 3-6.1 ROCKINGHAM COUNTY, NORTH CAROLINA MMIN, 0 moo `Po 00 'eo `'o Calcium CATIONS 0 °o o Shallow Wells X-av", Porewater Surface Water p0 ryo R 0 o ryo ao 00 00 00 Chloride+Nitrogen, NO2 plus NO3 ANIONS Samples with a charge balance error (CBE) of < 10% are shown. See companion table for CBE calculations. NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 62 used (assumes mostly nitrate). DATE PIPER DIAGRAM - SHALLOW GROUNDWATER, POREWATER, AND SURFACE WATER SEPTEMBER 2016 DUKE ENERGY CAROLINAS, LLC FIGURE DAN RIVER STEAM STATION ASH BASIN 3-6.2 ROCKINGHAM COUNTY, NORTH CAROLINA 0 MMIN, °'o V 0 0 0 0 Calcium CATIONS �o ® Deep Wells d Porewater �3 ® Surface Water 0o w -2m 0. g A-7D D� ryo o ryo ao 00 00o g Chloride+Nitrogen, NO2 plus NO3 ANIONS Samples with a charge balance error (CBE) of < 10% are shown. See companion table for CBE calculations. NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 62 used (assumes mostly nitrate). DATE PIPER DIAGRAM - DEEP GROUNDWATER, POREWATER, AND SURFACE WATER SEPTEMBER 2016 DUKE ENERGY CAROLINAS, LLC FIGURE DAN RIVER STEAM STATION ASH BASIN 3-6.3 ROCKINGHAM COUNTY, NORTH CAROLINA 10 o Bedrock Wells Porewater Q �3 Surface Water O� k Z 60 Gw 5 �� W , °o COs. 2 Oaf AO pO UC -25 W-258 S -13 O ♦ w O inn o x x x x ,nn 0 moo `Po 00 'eo `'o Calcium CATIONS 0 o ryo ao 00 00 00 Chloride+Nitrogen, NO2 plus NO3 ANIONS Samples with a charge balance error (CBE) of < 10% are shown. See companion table for CBE calculations. NOTE: Nitrate plus Nitrite was reported by the laboratory and is used here. Equivalent weight of 62 used (assumes mostly nitrate). DATE PIPER DIAGRAM - BEDROCK GROUNDWATER, POREWATER, AND SURFACE WATER SEPTEMBER 2016 DUKE ENERGY CAROLINAS, LLC FIGURE DAN RIVER STEAM STATION ASH BASIN 3-6.4 ROCKINGHAM COUNTY. NORTH CAROLINA