The URL can be used to link to this page

Home My WebLink AboutNC0002468_SARP_Rev0_Appx D_Vol1_20161201December 2016 Amec Foster Wheeler Environment & Infrastructure, Inc. Duke Energy Coal Combustion Residuals Management Program Dan River Steam Station Site Analysis and Removal Plan Revision 0 APPENDIX D: SELECT TABLES AND FIGURES FROM THE COMPREHENSIVE SITE ASSESSMENT REPORT, DAN RIVER STEAM STATION ASH BASIN, AUGUST 14, 2015 (HDR, 2015A); THE CORRECTIVE ACTION PLAN PART 1, DAN RIVER STEAM STATION ASH BASIN, NOVEMBER 12, 2015 (HDR, 2015B); AND THE CORRECTIVE ACTION PLAN PART 2, DAN RIVER STEAM STATION ASH BASIN, FEBRUARY 10, 2016 (HDR, 2016) Comprehensive Site Assessment Report Dan River Steam Station Ash Basin Site Name and Location Dan River Steam Station 900 South Edgewood Road Eden, NC 27288 Groundwater Incident No. Not Assigned NPDES Permit No. Date of Report NC0003468 August 14, 2015 Permittee and Current Property Owner Duke Energy Carolinas, LLC 526 South Church St Charlotte, NC 28202 800.559.3853 Consultant Information HDR Engineering, Inc. of the Carolinas 440 South Church St, Suite 900 Charlotte, NC 28202 704.338.6700 Latitude and Longitude of Facility 360 48' 70" N, 790 71' 80" W �>DUKE I= ENERGY )� NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. AS -BUILT MONITORING WELL AND NPDES OUTFALL LOCATIONS PROVIDED BY DUKE ENERGY. 4. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 5. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010). 6. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a). SCALE (FEET) 150' 0 /50' 300, l " = 300 , N LEGEND: DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY BOUNDARY STREAM LANDFILL - LAND CLEARING & INERT DEBRIS TOPOGRAPHIC CONTOUR (4-FT INTERVAL) ASH BASIN COMPLIANCE GROUNDWATER MONITORING WELL ASH BASIN VOLUNTARY GROUNDWATER MONITORING WELL NPDES OUTFALL LOCATION RIVER FLOW DIRECTION COMPLIANCE AND VOLUNTARY MONITORING WELLS DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN DATE AUGUST 2015 FIGURE ROCK NGHAM COUNTY, NORTH CAROB NA 2-7 DAN RIVERSTEAM STATION DAN RIVERCOMBINED CYCLE STATION(NOT SHOWN) ASHSTORAGE 2 ASHSTORAGE 1 LCID LANDFILL(CLOSED) ASH BASINPRIMARY CELL ASH BASINSECONDARYCELL MAPLEWOOD DR H A R R I S P L B R I A R W O O D D R G A L L A G H E R S W Y B E R M U D A D R B E N T G R A S S L N P A L M E R C T R O S E W O O D D RCAMELLIA L NMEADOWGR E E N V I L L A G E D R E D G E W O O D R D N E W S T 1 2 5 4 3 RECEPTOR MAP - USGS BASEDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASINNPDES PERMIT #NC0003468ROCKINGHAM COUNTY, NORTH CAROLINA DATE FIGURE AU GUST 2015 4-1 P A T H : G :\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 _W E L L S _R E C E P T O R S \D A N _R I V E R \P L O T \D R S S _F I G _4 _1 _2 0 1 5 0 7 2 2 _N E W .M X D - U S E R : M M U R C H I S - D A T E : 7 /2 2 /2 0 1 5 NOTES:1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.2. PRIVATE WELLS LOCATIONS ARE APPROXIMATE.3. USGS 7.5-MINUTE SERIES TOTOGRAPHIC BASEMAP COPYRIGHT:© 2013 NATIONAL GEOGRAPHIC SOCIETY, I-CUBED4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a).5. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC-VA.6. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE. Legend DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYCOINCIDENT WITH DUKE ENERGYPROPERTY BOUNDARY 0.5 MILE OFFSET FROM ASH BASINCOMPLIANCE BOUNDARY STREAM REPORTED PRIVATE WATER SUPPLY WELL "SURFACE WATER INTAKE N 500 0 500 1,000SCALE (FEET) DAN RIVERSTEAM STATION DAN RIVERCOMBINED CYCLE STATION ASHSTORAGE 2 ASHSTORAGE 1 LCID LANDFILL(CLOSED) ASH BASINPRIMARY CELL ASH BASINSECONDARYCELL MAPLEWOOD DR H A R R I S P L B R I A R W O O D D R G A L L A G H E R S W Y B E R M U D A D R B E N T G R A S S L N P A L M E R C T R O S E W O O D D RCAMELLIA L NMEADOWGR E E N V I L L A G E D R E D G E W O O D R D N E W S T 1 4 3 2 RECEPTOR MAP - AERIAL BASEDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASINNPDES PERMIT #NC0003468ROCKINGHAM COUNTY, NORTH CAROLINA DATE FIGURE AU GUST 2015 4-2 P A T H : G :\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 _W E L L S _R E C E P T O R S \D A N _R I V E R \M X D \D R S S _F I G _4 _2 _2 0 1 5 0 7 2 2 _ V 1 0 _ 2 _N E W .M X D - U S E R : M M U R C H I S - D A T E : 7 /2 2 /2 0 1 5 NOTES:1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.2. PRIVATE WELLS LOCATIONS ARE APPROXIMATE.3. ORTHOPHOTOGRAPHY IS FROM NC ONEMAP GIS ONLINE SERVICE.4. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107(a).5. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC-VA.6. DUKE ENERGY PROPERTY BOUNDARY WAS SUPPLIED BY DUKE ENERGY REAL ESTATE.7. PROPERTY BOUNDARIES WERE SUPPLIED BY THE ROCKINGHAM COUNTY GIS OFFICE. Legend DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYCOINCIDENT WITH DUKE ENERGYPROPERTY BOUNDARY 0.5 MILE OFFSET FROM ASH BASINCOMPLIANCE BOUNDARY STREAM PROPERTY LINES REPORTED PRIVATE WATER SUPPLY WELL N 500 0 500 1,000SCALE (FEET) 8'X9' PRECAST CONCRETE OUTLET STRUCTURE i *1* + i"llft REPORTED TO BE ABANDONING PIPE WITH PHASE 1 . 18" DIAMETER RCP INLET EAST STORMWATER DETENTION POND 48" DIAMETER PRECAST STRUCTURE WITH 8" DIP OUTLET 30" DIAMETER RCP OUTLET OLD DRAINAGE SYSTEM (REPORTED TO BE ABANDONED) 18-INCH DIAMETER RCP CULVERT 48" DIAMETER RCP SOUTH STORMWATER DETENTION POND 5'X5' PRECAST OUTLET STRUCTURE 36" DIAMETER RCP OUTLET 24" DIAMETER CMP (REPORTED TO BE ABANDONED) SERVICE WATER SETTLING POND 10'X10' CONCRETE INTAKE 10'X10' CONCRETE OUTLET 10" DIAMETER RESIN PIPE WITH CATCH BASIN (REPORTED TO BE ABANDONED) t # Aft DAN RIVER COMBINED CYCLE STATION �- 24" DIAMETER RCP CULVERT 18" DIAMETER RCP (PER PLAN) DAN RIVER - 1 ,gyp`'•, SETTLING BASIN OUTLET 10' DIAMETER CMP OUTLET,-- 18" DIAMETER CMP OUTLET 12" DIAMETER CN^P OUTLET 6" DIAMETER STEEL PIPE OUTLET VHIV 1'(1 V cr% STEAM STATION -3 36" DIAMETER CMP CULVERT FAik 48" DIAMETER OMP CULVERT - MANHOLE N0. 1 ASH BASIN �% DDII ,RARY CELL FORMER uOAL PILE NREA SETTLING PONDS 24" OUTSIDE DIAMETER PRESSURIZED IRON PIPE 36" INSIDE DIAMETER UNKNOWN MATERIAL DAN RIVER LOW WATER DAM 6" DIAMETER STEEL PIPE OUTLET D PN CATCH BASIN WITH 36" DIAMETER RCP OUTLET IN r DRY ASH DRAINAGE BASIN 30" DIAMETER RCP OUTLET EAST DRY ASH STORAGE AREA POND NO. 1 36" DIAMETER RCP OUTLET ASH BASIN SECONDARY CELL BRICK SIDED - DROP INLET - 36" DIAMETER RCP OUTLET 24" DIAMETER CMP CULVERT PRIMARY ASH POND DECANT STRUCTURE (OUTLET) 42"/36" DIAMETER DRAINAGE PIPE (REPORTED TO BE ABANDONED) PRIMARY ASH POND DECANT STRUCTURE (INLET) 4F' DIAMETER DRAINAGE PIPE (REPORTED TO BE ABANDONED) JUKE ENEI IAN RIVFIR SECONDARY ASH POND DECANT STRUCTURE (INLET) SECONDARY ASH POND DECANT STRUCTURE (OUTLET) J /w DERGROUND F CAROLINAS, L =AM STATION A _,, NOTES: 1. WASTE BOUNDARY AND ASH STORAGE AREA BOUNDARY IS APPROXIMATE. 2. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 3. CMP IS ASSUMED TO BE AN ABBREVIATION FOR CORRUGATED METAL PIPE. HDPE IS ASSUMED TO BE AN ABBREVIATION FOR HIGH DENSITY POLYETHYLENE. CPP IS ASSUMED TO BE AN ABBREVIATION FOR CORRUGATED PLASTIC PIPE. RCP IS ASSUMED TO BE AN ABBREVIATION FOR REINFORCED CONCRETE PIPE. 4. UNDERGROUND FEATURES PROVIDED BY STANTEC AND DUKE ENERGY. 5. PIPE LOCATION AND LENGTH SHOWN ARE APPROXIMATE. SCALE (FEET) /00' 0 /00' 200' /" = 200' ASH STORAGE AREA UNDERGROUND FEATURES MAP DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN LEGEND: ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY 1500 FT OFFSET FROM ASH BASIN WASTE BOUNDARY PIPE SEGMENT RIVER FLOW DIRECTION DATE AUGUST 2015 FIGURE ROCK NGHAM COUNTY, NORTH CAROB NA 4-4 all - - - Lu a!/ y '�� .R - _ - a ram': •• '•, � - `Uln • visa- Lu - z - z _J} ASH STORAGE 1 ' r ASH . 2 j _. � STORAGE 2 DAN RIVER ASH BASINS r y COMBINED CYCLE SECONDARY CELL - - - STATION - i, . -',�'. , .-� ._'�. •a- lam, . S SERVICE J WATER ' ^ SETTLING ,. i' " POND DAN RIVER STEAM STATIO c a z 3 v 3 vti Fo SCR NOTES: 1. WASTE BOUNDARY AND ASH STORAGE AREA BOUNDARY IS APPROXIMATE. 2. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 3. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a). 4. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC -VA. SCALE (FEET) 200' 0 200' 400' /" = 400' SURFACE WATER BODIES DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN DATE AUGUST 2015 FIGURE ROCK NGHAM COUNTY, NORTH CAROB NA 4-5 No property information provided in the county database for this area. 1 2 3 SURROUNDING PROPERTY OWNERSDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASINNPDES PERMIT #NC0003468ROCKINGHAM COUNTY, NORTH CAROLINA DATE FIGURE AUGUST 2015 4-6 P A T H : G :\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 _W E L L S _R E C E P T O R S \D A N _R I V E R \M X D \D R S S _F I G _4 _6 _2 0 1 5 0 7 1 8 .M X D - U S E R : T L E O N A R D - D A T E : 7 /1 9 /2 0 1 5 NOTES:1. ASH BASIN WASTE BOUNDARIES AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.2. PROPERTY BOUNDARIES WERE SUPPLIED BY THE ROCKINGHAM COUNTY GIS OFFICE.3. ORTHOPHOTOGRAPHY IS FROM NC ONEMAP GIS ONLINE SERVICE. Legend ASH BASIN WASTE BOUNDARY SURROUNDING PARCELS N 500 0 500 1,000SCALE (FEET) NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY. 4. COMPLIANCE SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SURFICIAL WATER TABLE. 5. COMPLIANCE DEEP MONITORING WELLS (D) ARE SCREENED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND REGOLITH. 6. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010) 7. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 8. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a). 9. PROPOSED WELL LOCATIONS ARE APPROXIMATE AND MAY BE ADJUSTED BASED ON FIELD CONDITIONS. 10. SEEP SAMPLE LOCATIONS WERE OBTAINED BY HDR USING A TRIMBLE HANDHELD GPS UNIT. 11. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC -VA. SCALE (FEET) 150' 0 /50' 300' l" = 300' N LEGEND: DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY BOUNDARY STREAM LANDFILL - LAND CLEARING & INERT DEBRIS TOPOGRAPHIC CONTOUR (4-FT INTERVAL) TRANSECT LINES ASH BASIN COMPLIANCE GROUNDWATER MONITORING WELL (RED) ASH BASIN VOLUNTARY GROUNDWATER MONITORING WELL (BLACK) SOIL BORING/GROUNDWATER MONITORING WELL LOCATION SURFACE WATER AND SEDIMENT SAMPLE LOCATION SEEP AND SEDIMENT SAMPLE LOCATION GRAB SAMPLE RIVER FLOW DIRECTION MONITORING WELL AND SAMPLE LOCATION DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN ROCK NGHAM COUNTY, NORTH CAROB NA DATE AUGUST 2015 FIGURE 6-2 &< &< &< &<&< &< &< &<&< &< &< &< &< &< &< &< &< &< &< &< &< &< ! ! ! # # # # ## # # # D a n R i v e r AB5S AB10S/SL/D AB25S/D/BR AB30S/D/BRAB35BR AS4D AS8BR MW301BR MW303BR MW306BR MW308BR MW311BRMW314BR MW315BR MW318D OW315D AB15S/D AB20S OW305SOW320D S R - 1 7 7 9 SW-1 SW-2 SW-9 NPDESOUTFALL 002 INFSW009 SW009A#2165 NPDES 001,SW021, OLD NPDES005 (OUT001) NPDES004AND SW2 OLDNPDES006 CCSW002OUT CCSW001 DRRC001 (ALSOCCSW002OUT48) ASHSTORAGE 1 ASHSTORAGE 2 DAN RIVERCOMBINEDCYCLE STATION SERVICE WATERSETTLING POND DAN RIVERSTREAM STATION ASH BASINPRIMARYCELL LCIDLANDFILL(CLOSED) ASH BASINSECONDARYCELL SOURCE CHARACTERIZATION SAMPLE LOCATION MAP ROCKINGHAM COUNTY, NORTH CAROLINA 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 \R E P O R T _D A N R V _A R C H D _S O U R C E C H A R A C T E R I Z A T I O N _S A M P L E L O C A T I O N .M X D - U S E R : R O L D E N - D A T E : 8 /1 2 /2 0 1 5 LEGEND: &<GROUNDWATER ASSESSMENT MONITORING WELL &<ASSESSMENT TEMPORARY MONITORING WELL &<CLOSURE OBSERVATION WELL !SURFACE WATER SAMPLE LOCATION #NCDENR MARCH 2014 SAMPLE LOCATION DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY DATE FIGURE AUGUST 2015 7-1 DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN N 500 0 500 1,000 SCALE (FEET) &<&< &<&<&< &< &< &<&<&< &<&<&< &<&< &<&< &<&< &< &<&< &< &< &< &<&< &<&< &<&< &<&< &<&< &< &<&< &<&< &<&< &<&< &<&< &<&<&<&< &<&< &<&< &< &< &< &< &< &< &< &< &< &< &<&< &< &< &< &<&< &<&< &<&< &<&< &<&< &<&< &< &<&< &< &< &< &< &< &<&< D a n R i v e r MW11DMW11D MW10DMW10D MW9D MW20S/DMW20S/D MW12DMW12D OW320DOW320D OW305SOW305S OW308DOW308D SOIL ANALYTICAL RESULTS – PLAN VIEW (PSRG EXCEEDANCES) CLEVELAND & RUTHERFORD COUNTIES, NORTH CAROLINA LEGEND: &<GROUNDWATER ASSESSMENTMONITORING WELL &<ASSESSMENT SOIL BORING &<ASSESSMENT TEMPORARYMONITORING WELL &<CLOSURE OBSERVATION WELL &<COMPLIANCE GROUNDWATERMONITORING WELL &<VOLUNTARY GROUNDWATERMONITORING WELL ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYCOINCIDENT WITH DUKE ENERGYPROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY DUKE ENERGY PROPERTY BOUNDARY FIGURE AUGUST 2015 8-1 DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN N NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW PSRG: PRELIMINARY SOIL REMEDIATION GOALft: FEETmg/kg: MILLIGRAMS PER KILOGRAMµg/L: MICROGRAMS PER LITERBOLD: EXCEEDS INDUSTRIAL HEALTH STANDARDUNDERLINED & ITALICS: EXCEEDS PROTECTION OF GROUNDWATERBOLD, UNDERLINED & ITALICS: EXCEEDS BOTH INDUSTRIAL HEALTHSTANDARD & PROTECTION OF GROUNDWATER 500 0 500 1,000 SCALE (FEET) Sample Depth (ft )20-21.5 20-21.5 25-26.5 30-31.5AshAshAshAsh Arsenic 69.1 85.5 46.5 18.1Cobalt8.5 8.5 J 7.5 J *DNEIron7,820 5,660 7,850 7,040Selenium*DNE 9.6 J *DNE *DNEVanadium47.3 72.1 37.1 16Manganese87.4 69.9 87 *DNE A B-5D A nalyt e (mg/kg) Sample Dept h (ft )15-20Ash Arsenic 81.5Cobalt10.1Iron10,500Selenium4.9 JVanadium57.9Manganese106 A B-5S A nalyt e (mg/kg) Sample Dept h (ft )3-5 34-36 44-46AshAshSoil Arse nic 71.6 7.1 J *DNECobalt14.9 13 12.6Iron9,500 23,200 23,700Selenium7.6 J *DNE *DNEBarium945*DNE *DNEVanadium57.8 52.7 48.6Manganese95.9 597 543 MW-311BR A nalyt e (mg/kg) Sample Dept h (ft)5.5-6.5Soil Cobalt 18.7Iron57,900Selenium10.2Vanadium50.5Manganese597 GWA -14S A naly t e (mg/kg) Sample Dept h (ft )10-11.5 20-21.5 25-26.5 35-35.4SoilSoilSoilSoil Arse ni c *DNE 59.6 *DNE *DNEArsenic*DNE *DNE 3.6 J-*DNECobalt7.5 10.7 14.4 26.3Iron19,400 8,240 36,400 29,100Selenium*DNE *DNE 4.9 J-*DNEVanadium18.8 62.7 35.5 31.6Manganese2251042601,010 MW-310BR A naly t e (mg/kg) Sample Depth (ft )3-5 24-26 26-26.5AshAshSoil Arseni c 55.9 33.4 9Cobalt9.9 5 J *DNEIron5,590 5,590 26,700Selenium5.2 J 4.2 J *DNEVanadium50.2 27.9 55.4Manganese92.9 *DNE *DNE A B-15D A nalyt e (mg/kg) Sample Dept h (ft)0-2Soil Cobal t 5.6 J+Iron 16,500Vanadium27.9Manganese177 BG-1D A naly t e (mg/kg) Sample Dept h (ft )1-2Soil Arseni c 3.9 J-Cobal t 6.8 J-Iron 30,400Vanadium45.9Manganese113 BG-5D A naly t e (mg/kg) Sample Dept h (ft)9-11 13-14SoilSoil Cobalt 3.5 J 13.6Iron5,260 20,300Vanadium12.1 52.4Manganese97.9 237 GWA -6S A naly te (mg/kg) Sample Dept h (ft )16-17 22-23 34-35SoilSoilSoil Arse ni c *DNE 3.2 J *DNECobalt9.6 16.3 14Iron17,600 25,600 26,500Selenium*DNE 6.1 *DNEVanadium28.1 22.8 22.9Manganese659567500 GWA -7S A naly t e (mg/kg) Sample Depth (ft )7-8 17-23 27-29 29-31SoilSoilSoilSoil Cobal t 19.7 11.9 4.4 J 11.8Iron37,700 24,000 11,000 21,600Vanadium72.4 57.2 6 18.4Manganese693359310968 MW-22BR A nalyt e (mg/kg) Sample Dept h (ft )0-2 3-5 40-41 45-46 50-51AshAshAshSoilSoil Arse ni c 21.6 49.7 62.9 71.8 7.8Cobalt10.2 9.2 8 J 11.9 10.4Iron12,400 9,100 13,600 22,500 16,900Selenium3.5 J *DNE 10.4 5.6 J 6.7 JVanadium34.5 55.9 34.4 83.2 83.2Manganese18871.7 253 494 332 A B-25BR A naly t e (mg/kg)Sample Dept h (ft )3-5Ash Arse ni c 19.9Cobalt13.5Iron5,170Selenium13.4Vanadium40Manganese75.2 A B-20S A nalyt e (mg/kg) Sample Dept h (ft)3-4.5 21-22.5 24-25.5 34-35.5AshAshSoilSoil Arseni c 45.5 32.2 *DNE *DNEArsenic*DNE *DNE 3.7 J *DNECobalt15.7 6.8 39.4 30.4Iron16,900 19,900 42,300 53,300Selenium*DNE 3.9 J 4.9 J *DNEBoron*DNE *DNE *DNE 50.6 JVanadium66.2 29.5 32.2 37.5Manganese3261811,600 1,530 MW-315BR A nalyt e (mg/kg) Sample Depth (ft)9-10 19-20 25-25 28-29SoilSoilSoilSoil Cobal t 18.6 11.1 16.1 15.7Iron27,500 40,000 40,100 36,700Selenium*DNE *DNE 3 J *DNEVanadium26.6 20.8 22.5 24.7Manganese247376373449 GWA -10D A naly te (mg/kg) Sample Dept h (ft )1-2 10-11 20-21.5 35-36.5 40-40.3 45-45.2SoilSoilSoilSoilSoilSoil Arsenic 7 J *DNE *DNE *DNE *DNE *DNECobalt8.9 J-16.1 7.5 22.6 12.8 10.9Iron33,600 27,700 28,800 34,400 26,700 28,700Vanadium37.3 35 34.3 21.5 27 28.6Manganese20060182.7 2,840 289 274 SB-3 A naly t e (mg/kg) Sample Dept h (ft )1-2 10-11.5 15-16.5 20-21.5 25-26.5 35-35.5SoilSoilSoilSoilSoilSoil Arse ni c *DNE *DNE *DNE *DNE 20 *DNEArsenic4 J-4.6 J 3.1 J 5.3 J *DNE *DNECobalt7 J+18.9 16.2 14.6 26.2 12.5Iron41,800 95,900 54,700 54,800 39,300 28,500Vanadium39.9 49.5 38.7 54.4 19.1 16Manganese113418202145328304 SB-1 A naly t e (mg/kg) Sample Depth (ft )1-2 10-11.5 20-21.5 30-31.2 35-36 65-65.3SoilSoilSoilSoilSoilSoil Arse ni c *DNE *DNE 10.6 9.2 *DNE 8.6Cobalt131242.6 20.1 12 21.8Iron30,300 49,100 60,300 42,700 37,100 49,200Vanadium21.3 41.4 33.8 24.2 26.2 34.1Manganese2332561,150 395 837 433 SB-2 A naly te (mg/kg) Sample Dept h (ft )1-2Soil A rse ni c 9.3Cobalt24.7Iron50,500Vanadium51.4Manganese1,050 MW-23BR A naly t e (mg/kg) Sample Dept h (ft )13-15Soil Arsenic 30.6Cobalt23.9Iron58,700Boron60.1 JVanadium67.2Manganese698 GWA -12S A naly t e (mg/kg) Sample Depth (ft)5-10 15-20 20-22SoilSoilSoil Cobal t 5.7 16.9 16.9Iron20,900 32,100 46,500Boron*DNE *DNE 47.1 JVanadium35.8 39 50.2Manganese122938326 GWA -8D A nalyt e (mg/kg) Sample Depth (ft )5-7 10-11 15-16SoilSoilSoil Arseni c 10.2 *DNE *DNEArsenic*DNE 4.1 J *DNECobalt7.5 7.5 18.9Iron37,600 18,500 39300 J+Se l e ni um *DNE 5.3 J 4.3 J-V anadi um 40.6 21.5 32.9Manganese15969661 MW-317BR A nalyt e (mg/kg) Sample Dept h (ft)30-31.5 40-40.5 102-104SoilSoilSoil Arse ni c *DNE *DNE 9.4Arsenic4.8 J-*DNE *DNECobalt33.3 20.2 16.3Iron27,800 42,200 42,400Selenium2.7 J 3.3 J 2.8 JVanadium29.5 22.6 26.5Manganese652 J 835 671 GWA -1D A nalyt e (mg/kg)Sample Depth (ft )40-41.5 55-56.5 70-71.5AshAshAsh Arse nic 56.6 17.8 58.9Cobalt4.5 5.1 J+6.9Iron18,800 4,140 6,320Selenium7.2 6.3 3.2 JVanadium32.9 25.4 40.5Manganese85.9 *DNE *DNE MW-306BR A nalyt e (mg/kg) Sample Dept h (ft )4-4.5 19.5-21 39.5-41SoilSoilSoil Arse nic *DNE *DNE 11Cobalt1.7 J 10.4 20.6Iron31,400 33,600 53,500Vanadium36.3 35 29.2Manganese*DNE 293 606 A S-6D A nalyt e (mg/kg) Sample Dept h (ft)5-6.5 20-21.4 25-25.9SoilSoilSoil Arse nic *DNE 3.7 J *DNECobalt7.1 31.5 10.7Iron27,600 36,900 18,400Vanadium11.3 30.6 24.9Manganese83.7 941 481 GWA -3D A nalyt e (mg/kg) Sample Dept h (ft )3-5 5-6.5 20-21.5 30-31.5SoilSoilSoilSoil Cobal t 14.2 17.6 12.5 8.6Iron26,000 21,100 30,900 27,900Selenium3.8 J-3 J *DNE *DNEVanadium23.7 21.2 27.8 18.7Manganese646593163193 A S-2D A naly t e (mg/kg) Sample Depth (ft )3-4 11-12.5 16-17.5 21-22.5AshAshAshSoil Arse ni c 52.3 16.2 10.4 *DNECobalt7.6 10.2 7.7 5.5Iron6,820 19,800 20,600 9,660Selenium*DNE 2.6 J *DNE *DNEVanadium37.9 36.1 36.3 11.5Manganese*DNE 285 194 139 A S-4D A nalyt e (mg/kg) Sample Dept h (ft)10-11.5 25-26.5SoilSoil Arsenic *DNE 3 J-Cobalt 9.5 22.4Iron16,900 32,900Selenium3.3 3.4 J-V anadi um 21.4 22.7Manganese2331,330 GWA -11D A nalyt e (mg/kg) Sample Dept h (ft )19-20 24-25SoilSoil Arse ni c 3.8 J *DNECobalt18.6 13.8Iron48,300 35,900Selenium3.2 J *DNEVanadium30.2 29Manganese468465 GWA -2D A nalyt e (mg/kg) Sample Dept h (ft)5-6.5 15-16.5 20-21.5SoilSoilSoil Arsenic *DNE 8.2 8.5Cobalt18.3 17.5 26.2Iron35,400 43,200 44,800Vanadium29.2 32.6 33.2Manganese273479396 A S-12S A naly t e (mg/kg) Sample Dept h (ft )19-21Ash Arse ni c 49.5Cobalt9.3Iron9,860Selenium5.8 JVanadium43.1Manganese93.5 A S-8BR A naly te (mg/kg) Sample Dept h (ft)3-5 27-28.5 32-33.3AshSoilSoil Arseni c 32.4 *DNE *DNECobalt9.7 11.1 18.8Iron5,840 15,500 21,700Vanadium38.7 15.2 23.8Manganese*DNE 291 576 A S-8D A naly t e (mg/kg) Sample Dept h (ft )3-5 19-20 24-25 29-30AshAshSoilSoil Arseni c 78.4 13.1 *DNE *DNECobalt12.6 11.5 7 10Iron10,100 31,700 18,900 24,900Vanadium70.7 33.7 24.7 18.1Manganese66.6 510 429 470 MW-318D A naly t e (mg/kg) Sample Dept h (ft)20-21.5 30-31.5 40-41.5 55-56.5SoilSoilSoilSoil Arsenic *DNE *DNE *DNE 4.6 JCobalt10.5 16.8 9.3 16.7Iron16,500 16,900 12,200 55,900Selenium*DNE *DNE *DNE 7.8Vanadium15.5 14.9 8.4 18.7Manganese2672753285,170 GWA -9D A naly t e (mg/kg) Sample Dept h (ft )4-4.5 15-15.5SoilSoil Arse ni c 9.3 14.3Cobalt18.9 13.1Iron32,400 31,900Vanadium33.4 48.3Manganese3331,020 A S-10D A naly te (mg/kg) Sample Dept h (ft )3-5 10-11AshAsh Arse ni c 144 58.7Cobalt4.9 J 4.6 JIron90,300 36,600Selenium16.5 *DNEBoron91.9 *DNEBarium*DNE 703Vanadium20.1 79.3Manganese305115 MW-308BR A nalyt e (mg/kg) Sample Dept h (ft )3-5 18-19.5 20-21.5 25-26.5 30-30.3AshAshAshSoilSoil Arse ni c 44.2 14.4 22.6 *DNE *DNEArsenic*DNE *DNE *DNE 3.6 J *DNECobalt6.6 J *DNE 8 11.5 10Iron5,800 4,110 11,700 24,300 22,000Vanadium43.1 18.5 28 19.9 15.3Manganese*DNE *DNE 297 413 338 A B-35BR A nalyt e (mg/kg) Sample Depth (ft )10-11.5 15-15.2 20-21SoilSoilSoil Arsenic 14.8 15 6.9Cobalt27.2 22.5 21.5Iron63,300 52,200 62,500Selenium3.9 J *DNE *DNEBoron62.1 53.8 J 63.1Vanadium75.7 65.1 56.9Manganese9168231,120 GWA -12D A naly t e (mg/kg) DATE A naly t e CA S No.NC PSRG Ind1 NC PSRG Prot GW1 Aluminum 7429-90-5 100,000 NSAntimony7440-36-0 94 0.9Arsenic7440-38-2 3 5.8Barium7440-39-3 44,000 580Beryllium7440-41-7 460 63Boron7440-42-8 46,000 45Cadmium7440-43-9 200 3Chromium*16065-83-1 100,000 360,000Cobalt7440-48-4 70 0.9Copper7440-50-8 9400 700Cr(VI)18540-29-9 6.3 3.8Iron7439-89-6 100,000 150Lead7439-92-1 800 270Manganese7439-96-5 5,200 65Mercury7439-97-6 8 1Molybdenum7439-98-7 1,200 NSNickel7440-02-0 4,400 130Nitrate14797-55-8 100,000 NSSelenium7782-49-2 1,200 2.1Silver7440-22-4 1,200 3.4Strontium7440-24-6 100,000 NSThallium7440-28-0 2.4 0.28Tin7440-31-5 100,000 10,000Vanadium7440-62-2 1,200 6Zinc7440-66-6 70,000 1,200* Chromium st andard shown is f or Chromium III f or comparison.No av ailable st andard f or Total C hromium. All unit s shown in mg/kg.1 - North C arolina DENR Inactiv e Hazardous Sit es Branch - Preliminary Soil Remediation Goals (PSRG) Table (March 2015). Industrial Health Based Soil PSRG and Prot ection of Groundwat er PSRG shown f or comparison. \\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 \R E P O R T _D a n R v _A r c h E _C h e m B o x _S o i l s .m x d _8 /1 2 /2 0 1 5 _r o l d e n Sample Depth (ft)10-11.5 20-21.5 30-31.5 40-41.5 45-50.5SoilAshAshSoilSoil Arsenic *DNE 49.2 50.5 *DNE *DNECobalt9.2 8 8.6 9.5 7.6Iron29,600 7,110 12,200 32,400 25,100Selenium*DNE 5.3 J 4.4 J 2.8 J *DNEVanadium30.3 51.5 47.9 21.8 9.1Manganese30975.5 167 215 601 MW-314BR Analyte (mg/kg) Sample Depth (ft)28-28 33-33SoilSoil Cobalt 7.7 11.9Iron19,000 27,500Selenium*D NE 3 JVanadium16.1 20.1Manganese288436 GWA-4D Analyte (mg/kg) Sample Depth (f t)0-4 5-6.5SoilSoil Cobalt 21.6 15Iron36,600 30,900Vanadium73.9 60.5Manganese893744 GWA-5BR Analyte (mg/kg) Sample Depth (f t)18-21 18-21SoilSoil Cobalt 11.8 11.5 JIron21,500 21,300Vanadium45.9 43.6Manganese373383 GWA-15D Analyte (mg/kg)Sample Depth (ft)3-5 15-16.5 30-31.3 45-46.5SoilSoilSoilSoil Cobalt 13.5 9.9 7.2 *DNEIron19,800 23,400 52,400 6,400Vanadium23.8 33.7 125 8.7Manganese74636112076.3 AB-30D Analyte (mg/kg) Sample Depth (ft)10-11.5 25-26.5 50-51.5 75-76.5 80-81.5 90-91.5SoilAshAshAshSoilSoil Arsenic 39.9 64.6 43.8 35.7 *DNE 16.2Cobalt49.6 12.1 9.7 9.9 8.3 10.6 J+Iron 16,600 4,190 3,920 5,770 45,900 25,300Selenium*DNE 6.1 J 5.3 J 4.9 J *DNE 6.7 J-Vanadium 34.2 58.8 44.3 45.8 45.8 25.9Manganese52666.6 *DNE *DNE 104 133 MW-303BR Analyte (mg/kg)Sample Depth (f t)3-4Ash Arsenic 25.6Cobalt101Iron45,300Selenium2.7 JBoron47.7Barium959Vanadium31.9Manganese1,630 MW-301BR A nalyte (mg/kg) Y r1 � � � .1 - N � a ., ems= � � . � . • at ,,, tft • °. F-. lot NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010). 4. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 5. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a). 6. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC -VA. • A V SCALE (FEET) 150' 0 /50' 300, l " = 300 , N LEGEND: DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPS BOUNDARY STREAM LANDFILL - LAND CLEARING & INERT DEBRIS TOPOGRAPHIC CONTOUR (4-FT INTERVAL) SURFACE WATER AND SEDIMENT SAMPLE LOCATION SEEP AND SEDIMENT SAMPLE LOCATION RIVER FLOW DIRECTION SEEP AND SURFACE WATER SAMPLE LOCATIONS DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN DATE AUGUST 2015 FIGURE ROCKINGHAM COUNTY, NORTH CAROLINA 9-1 NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY. 4. COMPLIANCE SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SURFICIAL WATER TABLE. 5. COMPLIANCE DEEP MONITORING WELLS (D) ARE SCREENED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND REGOLITH. 6. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010) 7. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 8. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a). 9. PROPOSED WELL LOCATIONS ARE APPROXIMATE AND MAY BE ADJUSTED BASED ON FIELD CONDITIONS. 10. SEEP SAMPLE LOCATIONS WERE OBTAINED BY HDR USING A TRIMBLE HANDHELD GPS UNIT. 11. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC -VA. SCALE (FEET) 150' 0 /50' 300' l" = 300' N LEGEND: DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY BOUNDARY STREAM LANDFILL - LAND CLEARING & INERT DEBRIS TOPOGRAPHIC CONTOUR (4-FT INTERVAL) ASH BASIN COMPLIANCE GROUNDWATER MONITORING WELL (RED) ASH BASIN VOLUNTARY GROUNDWATER MONITORING WELL (BLACK) SOIL BORING/GROUNDWATER MONITORING WELL LOCATION SURFACE WATER AND SEDIMENT SAMPLE LOCATION SEEP AND SEDIMENT SAMPLE LOCATION RIVER FLOW DIRECTION MONITORING WELL AND SAMPLE LOCATION DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN ROCK NGHAM COUNTY, NORTH CAROB NA DATE AUGUST 2015 FIGURE 10-8 &<&< &<&< &<&< &<&< &<&< &<&< &<&< &< &< &< &< &<&< &< &< &< &< &<&< &<&<&< &<&<&< &<&<&< &< &< &<&< &< &<&< &< &< &< &<&< &<&< &<&< &<&< &<&< &< &<&< &<&< &<&< &<&< &<&< &<&<&<&< &<&< &<&< &< &< &< &< &< &< &< &<&< &< &<&< D a n R i v e r OW320DOW320D AB20S/SLAB20S/SL AB15S/SL/DAB15S/SL/D BG1DBG1D S R -1 7 4 7 S R -1 9 7 4 S R-19 7 4 S R - 1 9 6 2 SR - 1 9 6 2 SR - 1 9 5 3 S R - 1 9 5 3 S R - 1 7 7 9 SR - 1 7 7 9 NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board GROU NDWATER ANALYTICAL RESU LTS – PLAN VIEW (2L EXCEEDANCES) ROCKINGHAM COUNTY, NORTH CAROLINA PAT 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 \ R E P O R T _ D A N R V _ A R C H D _ C H E M B O X _ G W . M X D - U S E R : R O L D E N - D A T E : 8 / 1 2 / 2 0 1 5 LEGEND: &<GROUNDWATER ASSESSMENT MONITORING &<ASSESSMENT TEMPORARY MONITORING WELL &<CLOSURE OBSERVATION WELL &<COMPLIANCE GROUNDWATER MONITORING WELL &<VOLUNTARY GROUNDWATER MONITORING WELL DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY DATE FIGURE AUGUST 2015 10-63 500 0 500 1,000 SCALE (FEET)DU KE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN Arsenic 11.7Manganese 410Vanadium 1.8 AB-35BRAnalyte (µg/L) N Cobalt 1Manganese 1,000Vanadium 0.77 J AB-5DAnalyte (µg/L) NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW mg/L: MILLIGRAMS PER LITERµg/L: MICROGRAMS PER LITER GWA-10D, GWA-14S, GWA-10S DRY AT THE TIME OF SAMPLING Iron 466Manganese 910Vanadium 2.7 AS-8BRAnalyte (µg/L) Manganese 280 MW-23DAnalyte (µg/L) Cobalt 9.7Manganese 1,700Vanadium 0.45 J GWA-8SAnalyte (µg/L)Iron 413Manganese 1,200Sulfate 368,000Total Dissolved Solids 690,000 J-Vanadium 5.2 GWA-8DAnalyte (µg/L) Manganese 150 GWA-12SAnalyte (µg/L)Vanadium 5.65 GWA-12DAnalyte (µg/L) Cobalt 1.2Iron 3,290Manganese 640Vanadium 1.8 GWA-9DAnalyte (µg/L)Cobalt 9.3Iron 5,100Manganese 220Vanadium 5.1 GWA-9SAnalyte (µg/L) Cobalt 10.1Iron 3,600Manganese 450Vanadium 2.6 MW-12Analyte (µg/L)Cobalt 4.8Iron 6,100Manganese 1,400Vanadium 1.4 MW-12DAnalyte (µg/L) Boron 1,000Cobalt 2.2Iron 928Manganese 430Vanadium 1.1 AS-12SAnalyte (µg/L) Manganese 500Vanadium 0.41 J MW-20DAnalyte (µg/L)Cobalt 2.1Iron 2,800Manganese 820 MW-20SAnalyte (µg/L) Chromium 13.8Cobalt 3Iron 1,200Manganese 120Vanadium 1.5 GWA-1SAnalyte (µg/L)Iron 719Manganese 680Vanadium 0.79 J GWA-1DAnalyte (µg/L) Iron 383 J+Manganese 410Vanadium 1.8 MW-301BRAnalyte (µg/L) Iron 2,760Manganese 500Vanadium 3.7 MW-303BRAnalyte (µg/L) Arsenic 620Iron 36,400Manganese 580 OW-308DAnalyte (µg/L) Antimony 2.1Chromium 11Vanadium 8.4 MW-317BRAnalyte (µg/L) Antimony 2.2Vanadium 0.57 J GWA-2DAnalyte (µg/L)Cobalt 2.3Iron 909Manganese 94Vanadium 1.3 GWA-2SAnalyte (µg/L) Boron 920Iron 623 JManganese 920Total Dissolved Solids 530,000Vanadium 1.6 MW-306BRAnalyte (µg/L) Cobalt 1.1Iron 3,920Manganese 270Vanadium 0.69 J+ AS-6DAnalyte (µg/L) Cobalt 12.2Manganese 533 GWA-3SAnalyte (µg/L)Chromium 17.7Cobalt 1.02Iron 411Manganese 122 GWA-3DAnalyte (µg/L) Cobalt 1.4Iron 1,700Manganese 810Vanadium 1.2 J+ GWA-11DAnalyte (µg/L)Chromium 15.6Cobalt 3.3Manganese 1,200Vanadium 0.52 J GWA-11SAnalyte (µg/L) Iron 370 J+Vanadium 1.5 GWA-4DAnalyte (µg/L)Cobalt 2.7Iron 530Manganese 590Vanadium 0.6 J GWA-4SAnalyte (µg/L) Boron 810Cobalt 4Iron 4,480Manganese 770Vanadium 4.8 AS-4DAnalyte (µg/L) Manganese 300Vanadium 0.67 J GWA-14DAnalyte (µg/L) Arsenic 16.8Manganese 670Vanadium 1.5 MW-21SAnalyte (µg/L)Iron 550Manganese 920Sulfate 274,000Total Dissolved Solids 639,000 MW-21DAnalyte (µg/L) Iron 307Manganese 630Sulfate 416,000Total Dissolved Solids 873,000Vanadium 0.49 J GWA-5BRAnalyte (µg/L) Iron 840Manganese 270Sulfate 307,000Total Dissolved Solids 705,000Vanadium 1.5 GWA-15DAnalyte (µg/L) Iron 1,910Manganese 2,200Sulfate 323,000Total Dissolved Solids 844,000Vanadium 0.84 J MW-308BRAnalyte (µg/L) Iron 850Manganese 130 MW-11DAnalyte (µg/L)Cobalt 29.2Iron 400Manganese 880Vanadium 2.6 MW-11Analyte (µg/L) Iron 490Manganese 370Vanadium 0.91 J AB-30BRAnalyte (µg/L)Antimony 1.5Manganese 430Vanadium 0.86 J AB-30DAnalyte (µg/L)Antimony 2.6 JCobalt 29Manganese 1,500 AB-30SAnalyte (µg/L) Antimony 1.9Cobalt 1.1Vanadium 1.5 AB-10DAnalyte (µg/L) Manganese 1,000 MW-10DAnalyte (µg/L)Iron 1,200Manganese 580Vanadium 0.89 J MW-311BRAnalyte (µg/L) Arsenic 809Boron 1,100Cobalt 1.2Iron 1,400Manganese 1,200Vanadium 1.2 OW-310DAnalyte (µg/L) Antimony 1Chromium 30.1Vanadium 5.5 AB-25BRAnalyte (µg/L)Antimony 1.7Boron 840Manganese 180Vanadium 0.69 J AB-25DAnalyte (µg/L) Iron 760Manganese 270Vanadium 0.33 J MW-22BRAnalyte (µg/L)Iron 15,600Manganese 950Vanadium 0.74 J MW-22SAnalyte (µg/L) Cobalt 6.4Iron 990Manganese 1,000Vanadium 2.3 MW-9Analyte (µg/L)Boron 1,000Cobalt 1.5Iron 2,600Manganese 600Vanadium 11.1 MW-9DAnalyte (µg/L) Boron 1,310Cobalt 13 JIron 1,150Manganese 577Vanadium 0.654 J MW-318DAnalyte (µg/L) Iron 7,400Manganese 1,300 GWA-6DAnalyte (µg/L)Cobalt 1.3 JIron 21,200Manganese 3,700Vanadium 6.5 GWA-6SAnalyte (µg/L) Iron 380Vanadium 1.3 MW-314BRAnalyte (µg/L)Cobalt 2.8Iron 1,610Manganese 1,000Vanadium 0.3 J GWA-7DAnalyte (µg/L)Cobalt 17.7Iron 310Manganese 950Vanadium 0.38 J GWA-7SAnalyte (µg/L) Cobalt 2.1Iron 890Manganese 110Vanadium 2.6 BG-5SAnalyte (µg/L)Cobalt 1Manganese 910 BG-5DAnalyte (µg/L) Iron 377Manganese 110Vanadium 2.5 MW-310BRAnalyte (µg/L) Cobalt 2.1Iron 2,900Manganese 1,500Vanadium 1.6 AS-2DAnalyte (µg/L) Cobalt 3.45Iron 6,040Manganese 509Thallium 0.256Vanadium 3.36 GWA-10DAnalyte (µg/L) Antimony 2.9Selenium 35.3Vanadium 15.3 AS-10DAnalyte (µg/L) Iron 2,900Manganese 1,140Vanadium 1.88 J AS-8DAnalyte (µg/L) Antimony 1.21Thallium 0.55Vanadium 1.38 MW-23BRAnalyte (µg/L) Chromium 24.8Cobalt 2.2Iron 1,300Manganese 1,800Vanadium 1.4 MW-315BRAnalyte (µg/L) Analyte CAS No.NC 2L GroundwaterIMAC1 Antimony 7440-36-0 1*Arsenic 7440-38-2 10Barium7440-39-3 700Beryllium7440-41-7 4*Boron 7440-42-8 700Cadmium7440-43-9 2Chloride**16887-00-6 250,000Chromium7440-47-3 10Cobalt7440-48-4 1*Copper**7440-50-8 1,000Iron7439-89-6 300Lead7439-92-1 15Manganese7439-96-5 50Mercury7439-97-6 1Nickel7440-02-0 100Nitrate**14797-55-8 10,000Nitrite as N**14797-65-0 1,000Selenium7782-49-2 20Sulfate**14808-79-8 250,000Thallium7440-28-0 0.2Total Dissolved Solids** TDS 500,000Vanadium7440-62-2 0.3*Zinc**7440-66-6 1000* Interim Maximum Allowable Concentration (IMAC) All units shown in µg/L. ** Unit reported in mg/L in standard, converted here to µg/L to match units displayed on figure. 1 - North Carolina 15A NCAC 02L.0202 Groundwater Standards (As of 4/2013). Interim Maximum Allowable Concentration shown where no standard is available for comparison. �'r NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY. 4. COMPLIANCE SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SURFICIAL WATERTABLE. 5. COMPLIANCE DEEP MONITORING WELLS (D) ARE SCREENED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCKAND REGOLITH. 6. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEBSITE(DATED2010) 7. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATEDAPRIL2014. 8. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCACO2L.0107 (a). 9. PROPOSED WELL LOCATIONS ARE APPROXIMATE AND MAY BE ADJUSTED BASED ON FIELD CONDITIONS. 10. SEEP SAMPLE LOCATIONS WERE OBTAINED BY HDR USING ATRIMBLE HANDHELD GPS UNIT. 11. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEASTEDEN, NCAND NORTHEASTEDEN, NC -VA. PRIMARY CELL LEGEND: DUKE ENERGY PROPERTY BOUNDARY ! h, ASH BASIN WASTE BOUNDARY hTpr� ASH STORAGE AREA BOUNDARY <j'` •� + COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY BOUNDARY x !-' STREAM ` - LANDFILL - LAND CLEARING & INERT DEBRIS TOPOGRAPHIC CONTOUR (4-FTINTERVAL) FLOW TRANSECT ASH BASIN COMPLIANCE GROUNDWATER Q. •• MONITORING WELL(RED) ASH BASIN VOLUNTARY GROUNDWATER {? MONITORING WELL(BLACK) ASH BASIN ASSESSMENT SOIL BORING/GROUNDWATER MONITORING WELL LOCATION SCALE (FEET) 150' 0 /50' 300' /" - 300' T MAJOR FLOW TRANSECTS DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN NPDES PERMIT #NCO003468 ROCK�NGHAIM COUNTY, NORTH CAROLINA DATE AUGUST 2015 1a[emwo Ln LO 0 a m 3 CL 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 ISSUE DATE DESCRIPTION PROJECT MANAGER M. FILARDI, P.G. DRAWN BY: - DESIGNED BY: - CHECKED BY: - APPROVED BY: - PROJECT NUMBER 000000000246415 NOT FOR CONSTRUCTION DUKE ENERGY CAROLINAS,LLC DUKE �. 'ENERGY.. DAN RIVER STEAM STATION COMPREHENSIVE SITE ASSESSMENT ROCKINGHAM COUNTY NORTH CAROLINA HYDROSTRATIGRAPHIC CROSS SECTION A -A' 0 1" 2° FILENAME I FIGURE 11-2.DWG SCALE I AS NOTED SHEET FIGURE 11-2 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 ISSUE DATE DESCRIPTION PROJECT MANAGER M. FILARDI, P.G. DRAWN BY: - DESIGNED BY: - CHECKED BY: - APPROVED BY: - PROJECT NUMBER 000000000246415 NOT FOR CONSTRUCTION DUKE ENERGY CAROLINAS,LLC DUKE �. 'ENERGY.. DAN RIVER STEAM STATION COMPREHENSIVE SITE ASSESSMENT ROCKINGHAM COUNTY NORTH CAROLINA HYDROSTRATIGRAPHIC CROSS SECTION B-B' 0 1" 2° FILENAME I FIGURE 11-3.DWG SCALE I AS NOTED SHEET FIGURE 11-3 0 r. 7 8 NOTES: ? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK (BR) CONTACT z 0 Q w J w C NORTH 600 550 500 450 400 m cn m o l N N N aaa f (N m (n Wilk tV N N — 4NN _ -- - -Lnn ----- DAN RIVER I 0 200 400 600 800 1000 DISTANCE (ft) 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 ISSUE DATE DESCRIPTION .SECTION c SCALE: HORIZ 1 "=60' 11-1 VERT 1 "=20' PROJECT MANAGER M. FILARDI, P.G. DRAWN BY: - DESIGNED BY: - CHECKED BY: - APPROVED BY: - PROJECT NUMBER 000000000246415 NOT FOR CONSTRUCTION C' SOUTH 600 550 500 450 400 DUKE ENERGY CAROLINAS,LLC jf%� DUKE DAN RIVER STEAM STATION ENERGY. COMPREHENSIVE SITE ASSESSMENT ROCKINGHAM COUNTY NORTH CAROLINA LEGEND: WATER TABLE SURFACE (JUNE 2015) V WATER TABLE SURFACE SYMBOL ASH — ASH F — FILL S — ALLUVIUM M1 — SOIL/SAPROLITE; N < 50 M2 — SAPROLITE/WEATHERED ROCK; N >_ 50% OR REC S 50% TZ — PARTIALLY WEATHERED ROCK; REC>50% AND RQD <50% BR — SOUND ROCK;REC >: 85% AND RQD >_ 50% HYDROSTRATIGRAPHIC CROSS SECTION C-C' C 10 v 0 1" 2" FILENAME FIGURE 11-4.DWG SHEET SCALE AS NOTED FIGURE 11-4 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 ISSUE DATE DESCRIPTION PROJECT MANAGER M. FILARDI, P.G. DRAWN BY: - DESIGNED BY: - CHECKED BY: - APPROVED BY: - PROJECT NUMBER 000000000246415 NOT FOR CONSTRUCTION DUKE ENERGY CAROLINAS,LLC DUKE �. 'ENERGY.. DAN RIVER STEAM STATION COMPREHENSIVE SITE ASSESSMENT ROCKINGHAM COUNTY NORTH CAROLINA HYDROSTRATIGRAPHIC CROSS SECTION D-DI 0 1" 2° FILENAME I FIGURE 11-5.DWG SCALE I AS NOTED SHEET FIGURE 11-5 Table 7-1. Soil Matrix Parameters and Analytical Methods Inorganic Compounds Units Method Antimony mg/kg EPA 6020 Arsenic mg/kg EPA 6020 Barium mg/kg EPA 6010 Boron mg/kg EPA 6010 Cadmium mg/kg EPA 6020 Chloride mg/kg SM4500-Cl-E Chromium mg/kg EPA 6010 Copper mg/kg EPA 6010 Iron mg/kg EPA 6010 Lead mg/kg EPA 6020 Manganese mg/kg EPA 6010 Mercury mg/kg EPA Method 7470A/7471 Nickel mg/kg EPA 6010 pH SU EPA 9045 Selenium mg/kg EPA 6020 Thallium (low level) mg/kg EPA 6020 Zinc mg/kg EPA 6010 Total Organic Carbon Units Method TOC Mg/kg EPA 9060 Notes: 1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above. 2. Ash samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045; select ash samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020. SP LP results to be reported in units of mg/L for comparison to 2L Standards. 3. Samples to be analyzed for Total Organic Carbon using method EPA 9060. Sample result in concentration units of mg/kg of organic carbon on a dry weight basis. Table 7-2.1. Ash Basin Sample Results$VK%DVLQ Aluminum Antimony Arsenic Barium Boron Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-42-8 7440-41-7 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 7439-96-5 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 46000 460 200 100000 70 9400 100000 800 5200 NS 0.9 5.8 580 45 63 3 360000 0.9 700 150 270 65 Sample Name Sample ID Sample Date Ash Basin AB-10D(20-21.5)2015015517 5/16/2015 9320 8.7 U 43.1 255 35 2.6 1 U 18 8.6 J 51.3 5270 17.7 85.3 AB-10D(30-31.5)2015015516 5/13/2015 6780 9.5 U 34.4 373 12.5 J+2.1 1.1 UJ 12.6 5.7 J 46.3 6660 9.2 J 83.2 AB-10D(40-41.5)2015015520 5/16/2015 6270 8.8 U 30.5 343 22 U 2 1.1 U 11.9 4.6 J 30.3 10100 6.3 J 72.3 AB-15D (3.0-5.0)92255787003 6/22/2015 10700 8.2 U 55.9 397 24.5 3.5 0.99 U 15.4 9.9 52 5590 18.7 92.9 AB-15D (24.0-26.0)92255787001 6/22/2015 5170 8.1 U 33.4 287 11.1 J 1.5 0.98 U 12.1 5 J 32.3 5590 8.4 64.3 AB-20S (3.0-5.0)92255787004 6/18/2015 7660 7.9 U 19.9 228 28 3.9 0.95 U 9.7 13.5 32 5170 14.3 75.2 AB-25BR(0-2)2015017070 5/28/2015 7880 5.9 U 21.6 313 14.7 U 1.5 0.7 U 19.6 10.2 22.6 12400 9.1 188 AB-25BR(3-5)2015017071 5/28/2015 7820 7.5 U 49.7 305 15.1 J 2.9 0.9 U 14.8 9.2 54 9100 13.3 71.7 AB-25BR(40-41)2015017072 5/30/2015 10000 8.4 U 62.9 175 21 U 1.1 1 U 26.1 8 J 16.3 13600 6.5 J 253 AB-35BR(3.0-5.0)2015020047 6/5/2015 8120 9.1 U 44.2 287 22.9 U 2 1.1 U 11 6.6 J 36.1 5800 10.9 45.9 AB-35BR(18-19.5)2015020048 6/10/2015 3350 9 U 14.4 230 22.6 U 1 1.1 U 5.8 9 U 16.5 4110 9 U 32.2 AB-35BR(20-21.5)2015020049 6/5/2015 7740 6.3 U 22.6 185 10.6 J 1.4 0.76 U 13.6 8 24.7 11700 12.2 297 AB-5D(20-21.5)2015015500 5/12/2015 8890 7.5 U 69.1 306 21.9 J+2.5 0.9 UJ 17.6 8.5 52.4 7820 16.2 87.4 AB-5D(20-21.5)2015018012 6/2/2015 8880 10.9 U 85.5 379 24.8 J 2.9 1.3 U 20.3 8.5 J 69.7 5660 18.6 69.9 AB-5D(25-26.5)2015015501 5/12/2015 6780 8.6 U 46.5 230 15.7 J+1.9 1 UJ 20.4 7.5 J 48.7 7850 11.7 87 AB-5D(30-31.5)2015015502 5/12/2015 3700 9.2 U 18.1 323 22.4 U 1.1 1.1 UJ 8 9.2 U 18.8 7040 9.2 U 56.7 AB-5S(15-20)2015018016 6/3/2015 12200 9.4 U 81.5 389 22.6 J 2.9 1.1 U 20.5 10.1 52.6 10500 20 106 MW308BR(3-5)2015013194 5/1/2015 6500 5.9 U 144 37.2 91.9 1.1 0.7 U 23.2 4.9 J 189 90300 16 305 MW-308BR(10-11)2015013195 5/1/2015 15100 8.3 U 58.7 703 20.7 U 1.4 0.99 U 25.3 4.6 J 57.3 36600 12.2 115 MW-311BR(3-5)2015018009 6/4/2015 11300 8.9 U 71.6 945 19.5 J 4.4 1.1 U 15.9 14.9 59.2 9500 18.2 95.9 MW-311BR(34-36)2015018010 6/4/2015 12500 7.7 U 7.1 J 239 19.1 U 1.1 0.92 U 32.6 13 23.1 23200 7 J 597 MW-314BR(20-21.5)2015015512 5/13/2015 8900 7.5 U 49.2 310 24.2 2.2 0.9 UJ 17.3 8 45.3 7110 14.3 75.5 MW-314BR(30-31.5)2015015513 5/13/2015 11500 8 U 50.5 449 20.2 4.4 0.96 UJ 25.2 8.6 44.8 12200 11.2 167 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Page 1 of 3 Table 7-2.1. Ash Basin Sample Results$VK%DVLQ Sample Name Sample ID Sample Date Ash Basin AB-10D(20-21.5)2015015517 5/16/2015 AB-10D(30-31.5)2015015516 5/13/2015 AB-10D(40-41.5)2015015520 5/16/2015 AB-15D (3.0-5.0)92255787003 6/22/2015 AB-15D (24.0-26.0)92255787001 6/22/2015 AB-20S (3.0-5.0)92255787004 6/18/2015 AB-25BR(0-2)2015017070 5/28/2015 AB-25BR(3-5)2015017071 5/28/2015 AB-25BR(40-41)2015017072 5/30/2015 AB-35BR(3.0-5.0)2015020047 6/5/2015 AB-35BR(18-19.5)2015020048 6/10/2015 AB-35BR(20-21.5)2015020049 6/5/2015 AB-5D(20-21.5)2015015500 5/12/2015 AB-5D(20-21.5)2015018012 6/2/2015 AB-5D(25-26.5)2015015501 5/12/2015 AB-5D(30-31.5)2015015502 5/12/2015 AB-5S(15-20)2015018016 6/3/2015 MW308BR(3-5)2015013194 5/1/2015 MW-308BR(10-11)2015013195 5/1/2015 MW-311BR(3-5)2015018009 6/4/2015 MW-311BR(34-36)2015018010 6/4/2015 MW-314BR(20-21.5)2015015512 5/13/2015 MW-314BR(30-31.5)2015015513 5/13/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium Chloride Magnesium Nitrate Potassium 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 16887-00-6 7439-95-4 14797-55-8 7440-09-7 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 8 1200 4400 1200 100000 2.4 1200 70000 NS NS NS 100000 NS 1 NS 130 2.1 NS 0.28 6 1200 NS NS NS NS NS 0.15 4.3 U 18.4 6.5 U 136 8.7 U 43.7 27.5 2990 NA 923 42.4 UJ 1410 0.055 4.8 U 14.4 7.2 U 161 9.5 U 33.2 16.5 3200 457 U 721 45.7 UJ 1100 0.072 4.4 U 12.3 3.4 J 139 8.8 U 25.1 12.8 2680 426 U 702 42.6 UJ 836 0.15 4.1 U 19.8 5.2 J 185 8.2 U 50.2 33.4 3420 404 U 1140 40.4 UJ 1940 0.064 4.1 U 10.9 4.2 J 89.7 8.1 U 27.9 15.9 NA NA NA 39.5 UJ NA 0.22 4 U 23.1 13.4 121 7.9 U 40 27.5 1910 386 U 682 38.6 UJ 1300 0.11 1.7 J 11.6 3.5 J 55.5 5.9 U 34.5 33.5 864 NA 2300 29.8 UJ 2560 0.05 2 J 16.6 7.5 U 194 7.5 U 55.9 23.7 2430 376 U 669 37.6 UJ 1320 0.013 U 4.2 U 11 10.4 107 8.4 U 34.4 20.6 4870 407 U 3220 40.7 UJ 991 0.14 4.6 U 13 9.1 U 118 9.1 U 43.1 17.8 2490 433 U 904 43.3 UJ 973 0.089 4.5 U 6.4 9 U 75.1 9 U 18.5 5.4 J 1470 NA 395 44.2 UJ 588 0.034 3.2 U 15.3 6.3 U 79.7 6.3 U 28 33.1 2420 NA 2060 31.6 UJ 1200 0.18 3.8 U 18.8 5.6 U 146 7.5 U 47.3 26.2 3870 371 U 964 37.1 UJ 1420 0.11 5.4 U 19.7 9.6 J 160 10.9 U 72.1 27.7 3470 NA 910 56.4 UJ 1520 0.11 4.3 U 15.9 6.4 U 124 8.6 U 37.1 23.6 2730 418 U 907 41.8 UJ 1190 0.062 4.5 U 8.2 6.7 U 79.4 9.2 U 16 6.9 J 1300 443 U 414 44.3 UJ 589 0.17 4.7 UJ 19.5 4.9 J 164 9.4 U 57.9 31.9 3990 457 U 1440 45.7 UJ 1830 0.77 7.1 30 16.5 44.7 5.9 U 20.1 30.7 909 289 U 659 28.9 UJ 917 0.029 4.1 U 15.1 8.3 U 61.1 8.3 U 79.3 30.8 668 NA 1920 40.3 UJ 1380 0.2 4.4 UJ 24.2 7.6 J 325 8.9 U 57.8 27.6 2910 427 U 1140 42.7 UJ 2350 0.022 3.8 U 16.4 7.7 U 38.9 7.7 U 52.7 51.6 1810 NA 3830 37.8 UJ 1940 0.2 3.8 U 18 5.3 J 129 7.5 U 51.5 24.6 3360 358 U 911 35.8 UJ 1400 0.064 4 U 19.7 4.4 J 364 8 U 47.9 15.4 7290 NA 1340 39.2 UJ 1390 Page 2 of 3 Table 7-2.1. Ash Basin Sample Results$VK%DVLQ Sample Name Sample ID Sample Date Ash Basin AB-10D(20-21.5)2015015517 5/16/2015 AB-10D(30-31.5)2015015516 5/13/2015 AB-10D(40-41.5)2015015520 5/16/2015 AB-15D (3.0-5.0)92255787003 6/22/2015 AB-15D (24.0-26.0)92255787001 6/22/2015 AB-20S (3.0-5.0)92255787004 6/18/2015 AB-25BR(0-2)2015017070 5/28/2015 AB-25BR(3-5)2015017071 5/28/2015 AB-25BR(40-41)2015017072 5/30/2015 AB-35BR(3.0-5.0)2015020047 6/5/2015 AB-35BR(18-19.5)2015020048 6/10/2015 AB-35BR(20-21.5)2015020049 6/5/2015 AB-5D(20-21.5)2015015500 5/12/2015 AB-5D(20-21.5)2015018012 6/2/2015 AB-5D(25-26.5)2015015501 5/12/2015 AB-5D(30-31.5)2015015502 5/12/2015 AB-5S(15-20)2015018016 6/3/2015 MW308BR(3-5)2015013194 5/1/2015 MW-308BR(10-11)2015013195 5/1/2015 MW-311BR(3-5)2015018009 6/4/2015 MW-311BR(34-36)2015018010 6/4/2015 MW-314BR(20-21.5)2015015512 5/13/2015 MW-314BR(30-31.5)2015015513 5/13/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Sodium Sulfate pH (field)Total Organic Carbon 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg Std. Units mg/kg NS NS NS NS NS NS NS NS 223 J NA 7.5 J 77000 477 U 457 U 7.7 J 84100 440 U 426 U 7.7 J 90900 278 J 215 J 7.5 J 46800 NA NA 8.5 J 111000 385 J 390 6.3 J 191000 293 U NA 6 J 33600 376 U 376 U 6.4 J 81100 419 U 407 U 8.6 J 25400 457 U 471 6.9 J 97600 452 U NA 7.7 J 87500 315 U NA 7 J 29800 270 J 371 U 7.8 J 73600 545 U NA 7.3 J 97400 217 J 418 U 7.7 J 61600 448 U 443 U 7.8 J 64300 258 J 457 U 7.6 J 92400 293 U 477 4.9 J 42900 414 U NA 6.4 J 55300 360 J 308 J 5.6 J 167000 383 U NA 6.9 J 34900 272 J 358 U 7.8 J 113000 289 J NA 8 J 108000 J Page 3 of 3 Table 7-2.2. Ash Basin Sample Results - Ash Storage Aluminum Antimony Arsenic Barium Boron Beryllium Cadmium Chromium Cobalt Copper Iron Lead Manganese 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-42-8 7440-41-7 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 7439-96-5 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 46000 460 200 100000 70 9400 100000 800 5200 NS 0.9 5.8 580 45 63 3 360000 0.9 700 150 270 65 Sample Name Sample ID Sample Date Ash Storage AS-4D(3-4)2015008616 3/24/2015 8150 4.3 U 52.3 307 6.5 1.8 0.51 U 10.6 7.6 38.7 6820 13.8 59.6 AS-4D(11-12.5)2015008618 3/25/2015 9940 3.7 U 16.2 171 36.4 1.6 0.45 U 17.8 10.2 33.4 19800 19.7 285 AS-4D(16-17.5)2015008619 3/24/2015 10800 3.2 U 10.4 123 32.4 1.4 0.39 U 20.7 7.7 31.4 20600 17 194 AS-8BR(19-21)2015012027 4/14/2015 8930 7.1 U 49.5 300 13.4 J 2.4 0.85 U 15.4 9.3 49.5 9860 14 93.5 AS-8D(3-5)2015010595 4/7/2015 6390 8.9 U 32.4 303 11.2 2.6 1.1 U 10.4 9.7 34.2 5840 10.9 62.8 MW-301BR(3-4)2015009423 4/1/2015 26500 3.6 U 25.6 959 47.7 2.2 0.44 U 24.9 101 69.2 45300 22.7 1630 MW-303BR(25-26.5)2015010602 4/8/2015 9290 6.6 U 64.6 369 14.4 J 4.2 0.79 U 13 12.1 51.1 4190 19.2 66.6 MW-303BR(50-51.5)2015010603 4/8/2015 5850 7.3 U 43.8 408 11.6 J 3.8 0.87 U 11.3 9.7 44.7 3920 14.5 55.2 MW-303BR(75-76.5)2015010604 4/8/2015 6660 7.4 U 35.7 289 13.7 J 2.9 0.88 U 12 9.9 42.6 5770 14.9 64.8 MW-306BR(40-41.5)2015009430 3/25/2015 5460 2.9 U 56.6 287 24.5 1.4 0.34 U 17 4.5 32 18800 11.9 85.9 MW-306BR(55-56.5)2015009429 3/25/2015 5260 4.3 UJ 17.8 227 14.8 J 1.9 0.52 U 10 5.1 J+39.3 4140 7.7 J 32 MW-306BR(70-71.5)2015009431 3/25/2015 8990 3.8 U 58.9 332 24.2 2.4 0.46 U 16.3 6.9 48.6 6320 12.7 58.2 MW315BR(3.0-4.5)2015013175 4/23/2015 13500 7.6 U 45.5 282 13.5 J 4.2 0.91 U 21.1 15.7 61.1 16900 19.1 326 MW-315BR(21-22.5)2015013177 4/23/2015 7600 6.1 U 32.2 346 15.3 U 1.6 0.74 U 14.5 6.8 35.5 19900 9 181 MW-318D(3-5)2015014236 5/5/2015 13200 6.8 U 78.4 391 16.8 J 3.3 0.82 U 19.2 12.6 60.2 10100 22.2 66.6 MW-318D(19-20)2015014237 5/5/2015 16000 7.1 U 13.1 140 17.7 U 1.4 0.85 U 18.9 11.5 28.2 31700 17 510 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Page 1 of 3 Table 7-2.2. Ash Basin Sample Results - Ash Storage Sample Name Sample ID Sample Date Ash Storage AS-4D(3-4)2015008616 3/24/2015 AS-4D(11-12.5)2015008618 3/25/2015 AS-4D(16-17.5)2015008619 3/24/2015 AS-8BR(19-21)2015012027 4/14/2015 AS-8D(3-5)2015010595 4/7/2015 MW-301BR(3-4)2015009423 4/1/2015 MW-303BR(25-26.5)2015010602 4/8/2015 MW-303BR(50-51.5)2015010603 4/8/2015 MW-303BR(75-76.5)2015010604 4/8/2015 MW-306BR(40-41.5)2015009430 3/25/2015 MW-306BR(55-56.5)2015009429 3/25/2015 MW-306BR(70-71.5)2015009431 3/25/2015 MW315BR(3.0-4.5)2015013175 4/23/2015 MW-315BR(21-22.5)2015013177 4/23/2015 MW-318D(3-5)2015014236 5/5/2015 MW-318D(19-20)2015014237 5/5/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium Chloride Magnesium Nitrate Potassium 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 16887-00-6 7439-95-4 14797-55-8 7440-09-7 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 8 1200 4400 1200 100000 2.4 1200 70000 NS NS NS 100000 NS 1 NS 130 2.1 NS 0.28 6 1200 NS NS NS NS NS 0.14 0.75 J 13.9 4.3 U 108 4.3 U 37.9 18.1 2300 420 U 889 42 UJ 1320 0.11 J-0.48 J 12.5 2.6 J 47.9 3.7 U 36.1 30.2 1500 389 U 1580 38.9 UJ 915 0.033 0.65 U 9.7 1.9 J 32 3.2 U 36.3 27.1 853 319 U 1420 31.9 UJ 781 0.13 3.6 U 18.7 5.8 J 125 7.1 U 43.1 25.6 1960 NA 973 35.1 UJ 1390 0.16 1.9 12.4 8.9 U 170 8.9 U 38.7 15.9 2030 430 U 784 43 UJ 1070 0.027 2.6 J 33.8 2.7 J 313 3.6 U 31.9 112 J 2150 NA 6620 35 UJ 2160 0.15 1.7 J 20.4 6.1 J 158 6.6 U 58.8 29.7 1590 316 U 705 31.6 UJ 1350 0.12 3.6 U 15.3 5.3 J 156 7.3 U 44.3 19.8 1600 350 U 595 35 UJ 1050 0.11 2 13.5 4.9 J 150 7.4 U 45.8 20.3 1700 NA 728 36.8 UJ 1030 0.14 2.3 J 12.9 7.2 136 2.9 U 32.9 10.8 J+1680 281 U 748 28.1 UJ 1470 0.18 4.6 UJ 11.3 6.3 144 8.7 UJ 25.4 13.1 J+1690 439 U 610 43.9 UJ 797 0.16 3.8 UJ 15.9 3.2 J 169 3.8 U 40.5 21.8 J+3010 NA 923 38.9 UJ 1380 0.14 2.6 J 26.3 7.6 U 201 7.6 U 66.2 37.7 2410 364 U 1700 36.4 UJ 1250 0.06 3.1 U 19.2 3.9 J 92.8 6.1 U 29.5 24.4 2250 NA 1080 30 UJ 898 0.13 2.3 J 25.1 6.8 U 170 6.8 U 70.7 36.7 1880 339 U 1090 33.9 UJ 2560 0.021 3.5 U 16.4 7.1 U 53.3 7.1 U 33.7 51.4 2560 NA 3380 34.8 UJ 1500 Page 2 of 3 Table 7-2.2. Ash Basin Sample Results - Ash Storage Sample Name Sample ID Sample Date Ash Storage AS-4D(3-4)2015008616 3/24/2015 AS-4D(11-12.5)2015008618 3/25/2015 AS-4D(16-17.5)2015008619 3/24/2015 AS-8BR(19-21)2015012027 4/14/2015 AS-8D(3-5)2015010595 4/7/2015 MW-301BR(3-4)2015009423 4/1/2015 MW-303BR(25-26.5)2015010602 4/8/2015 MW-303BR(50-51.5)2015010603 4/8/2015 MW-303BR(75-76.5)2015010604 4/8/2015 MW-306BR(40-41.5)2015009430 3/25/2015 MW-306BR(55-56.5)2015009429 3/25/2015 MW-306BR(70-71.5)2015009431 3/25/2015 MW315BR(3.0-4.5)2015013175 4/23/2015 MW-315BR(21-22.5)2015013177 4/23/2015 MW-318D(3-5)2015014236 5/5/2015 MW-318D(19-20)2015014237 5/5/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Sodium Sulfate pH (field)Total Organic Carbon 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg Std. Units mg/kg NS NS NS NS NS NS NS NS 215 420 U 6 J 130000 101 389 U 6.6 J 153000 37.6 J 319 U 5.5 J 26600 219 J NA 6.6 J 77800 137 353 J 6 J 131000 364 U NA 5.4 J 8620 229 476 6.1 J 98600 198 194 J 7.5 J 177000 215 NA 7.4 J 124000 279 J 2990 4.1 J 64600 J 462 U 467 7.8 J 109000 277 J NA 7.8 J 54800 226 J+364 U 5.2 J 104000 163 J+NA 7.3 J 79100 215 J 339 U 5.6 J 65600 353 U NA 7.2 J 188000 Page 3 of 3 Page 1 of 1 Table 7-3. Aqueous Matrix Parameters and Analytical Methods Parameter Units Method Field Parameters pH SU Field Water Quality Meter Specific Conductance mmho/cm Field Water Quality Meter Temperature ºC Field Water Quality Meter Dissolved Oxygen mg/L Field Water Quality Meter Oxidation Reduction Potential mV Field Water Quality Meter NPDES Constituents Antimony µg/L EPA 200.8 or 6020 Arsenic µg/L EPA 200.8 or 6020 Barium µg/L EPA 200.7 or 6010 Boron µg/L EPA 200.7 or 6010 Cadmium µg/L EPA 200.8 or 6020 Chloride mg/L EPA 300.0 Chromium µg/L EPA 200.7 or 6010 Copper mg/L EPA 200.7 or 6010 Iron µg/L EPA 200.7 or 6010 Lead µg/L EPA 200.8 or 6020 Manganese µg/L EPA 200.7 or 6010 Mercury µg/L EPA 245.1 Nickel µg/L EPA 200.7 or 6010 Nitrate as Nitrogen mg-N/L EPA 300.0 Selenium µg/L EPA 200.8 or 6020 Sulfate mg/L EPA 300.0 Thallium (low level) µg/L EPA 200.8 or 6020 Total Dissolved Solids mg/L EPA 160.1 or SM 2540C Zinc mg/L EPA 200.7 or 6010 Additional Groundwater Constituents Alkalinity (as CaCO3) mg/L SM2320B Calcium mg/L EPA 200.7 Ferrous Iron mg/L SM4500-Fe Magnesium mg/L EPA 200.7 Potassium mg/L EPA 200.7 Sodium mg/L EPA 200.7 Sulfide mg/L SM4500S-F Total Organic Carbon mg/L SM5310 Notes: Select constituents may be analyzed for total and dissolved concentrations Table 7-5. Ash Basin Porewater Sample Results Aluminum Aluminum Antimony Antimony Arsenic Arsenic Barium Barium Beryllium Beryllium Boron Boron Cadmium 7429-90-5 7429-90-5 7440-36-0 7440-36-0 7440-38-2 7440-38-2 7440-39-3 7440-39-3 7440-41-7 7440-41-7 7440-42-8 7440-42-8 7440-43-9 D T D T D T D T D T D T D ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l NS NS NS NS 10 10 700 700 NS NS 700 700 2 NS NS 1 1 NS NS NS NS 4 4 NS NS NS Sample Name Sample ID Sample Date AB-5S 92255424001 6/19/2015 100 U 84 J 0.94 J+0.91 139 145 86 91 0.2 U 0.2 U 320 J+310 0.036 J AB-10S 92256383002 6/26/2015 140 530 1.6 1.3 229 233 250 260 0.17 J 0.15 J 350 330 0.072 J AB-10SL 92256383001 6/26/2015 1200 3000 11.6 9.8 8.7 9.6 170 130 0.14 J 0.17 J 440 440 0.08 U AB-15S 92255785001 6/22/2015 140 13200 2.7 6.7 296 442 160 810 0.23 J+12.1 390 420 0.08 U AB-25S 92256382002 6/26/2015 64 J 79 J 1.6 1.6 94.7 96.4 46 56 0.2 U 0.2 U 580 630 0.08 U General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter shading + bold - indicates exceedance of NC 2L or IMAC Criteria. North Carolina Department of Environment and Natural Resources Division of Water Resources 02L Groundwater Quality Standards and Interim Maximum Allowable Concentrations (IMACs). April 2013 *NOTE: The IMAC value is shown where there is no applicable 02L standard. Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina , lists Interim Maximum Allowable Concentrations (IMACs). The IMACs were issued in 2010 and 2011, however NCDENR has not established a 02L standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are noted in this report for reference only. Analyte CAS RN Fraction Result Unit 15A NCAC 02L STANDARD IMAC* Page 1 of 5 Table 7-5. Ash Basin Porewater Sample Results Sample Name Sample ID Sample Date AB-5S 92255424001 6/19/2015 AB-10S 92256383002 6/26/2015 AB-10SL 92256383001 6/26/2015 AB-15S 92255785001 6/22/2015 AB-25S 92256382002 6/26/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter shading + bold - indicates exceedance of NC 2L or IMAC Criteria. North Carolina Department of Environment and Natural Resources Division of Water Resources 02L Groundwater Quality Standards and Interim Maximum Allowable Concentrations (IMACs). April 2013 *NOTE: The IMAC value is shown where there is no applicable 02L standard. Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina , lists Interim Maximum Allowable Concentrations (IMACs). The IMACs were issued in 2010 and 2011, however NCDENR has not established a 02L standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are noted in this report for reference only. Analyte CAS RN Fraction Result Unit 15A NCAC 02L STANDARD IMAC* Cadmium Chromium Chromium Cobalt Cobalt Copper Copper Iron Iron Lead Lead Manganese Manganese 7440-43-9 7440-47-3 7440-47-3 7440-48-4 7440-48-4 7440-50-8 7440-50-8 7439-89-6 7439-89-6 7439-92-1 7439-92-1 7439-96-5 7439-96-5 T D T D T D T D T D T D T ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 2 10 10 NS NS 1000 1000 300 300 15 15 50 50 NS NS NS 1 1 NS NS NS NS NS NS NS NS 0.036 J 1.7 J+4 27.1 28.2 0.37 J+0.49 J 22800 25100 0.1 U 0.15 1500 1500 0.058 J 1.7 1.3 9.4 8.5 4.3 2.5 7500 7600 0.86 0.85 910 860 0.033 J 4.2 5.1 1.3 1.8 4.3 5 760 2900 1.1 1.5 350 250 1.3 0.5 U 50 0.5 U 34.1 0.25 J+197 50 U 5800 0.1 U 77.4 28 170 0.08 U 0.56 J+0.47 J 0.15 J 0.16 J 0.72 J+1 U 29 J 74 0.058 J+0.049 J 70 72 Page 2 of 5 Table 7-5. Ash Basin Porewater Sample Results Sample Name Sample ID Sample Date AB-5S 92255424001 6/19/2015 AB-10S 92256383002 6/26/2015 AB-10SL 92256383001 6/26/2015 AB-15S 92255785001 6/22/2015 AB-25S 92256382002 6/26/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter shading + bold - indicates exceedance of NC 2L or IMAC Criteria. North Carolina Department of Environment and Natural Resources Division of Water Resources 02L Groundwater Quality Standards and Interim Maximum Allowable Concentrations (IMACs). April 2013 *NOTE: The IMAC value is shown where there is no applicable 02L standard. Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina , lists Interim Maximum Allowable Concentrations (IMACs). The IMACs were issued in 2010 and 2011, however NCDENR has not established a 02L standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are noted in this report for reference only. Analyte CAS RN Fraction Result Unit 15A NCAC 02L STANDARD IMAC* Mercury Mercury Molybdenum Molybdenum Nickel Nickel Selenium Selenium Strontium Strontium Thallium Thallium Vanadium 7439-97-6 7439-97-6 7439-98-7 7439-98-7 7440-02-0 7440-02-0 7782-49-2 7782-49-2 7440-24-6 7440-24-6 7440-28-0 7440-28-0 7440-62-2 D T D T D T D T D T D T D ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 1 1 NS NS 100 100 20 20 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS 0.2 0.2 0.3 0.2 U 0.2 U 20.1 20.9 21.4 24.9 0.5 U 0.5 U 1300 1300 0.65 0.69 1 U 0.2 U 0.2 U 14.5 14.3 5.8 5.4 0.38 J 0.24 J 930 950 0.59 0.54 4.1 0.2 U 0.2 U 17.3 28.5 5.2 5.9 0.87 1.1 370 340 0.084 J 0.1 U 11.8 0.2 U 0.08 J 21.5 28.6 0.96 J+70.1 0.65 12.2 770 1100 0.2 3.4 45.4 0.2 U 0.2 U 68.3 71.3 2 2 0.66 0.74 650 790 0.043 J 0.043 J 13.2 Page 3 of 5 Table 7-5. Ash Basin Porewater Sample Results Sample Name Sample ID Sample Date AB-5S 92255424001 6/19/2015 AB-10S 92256383002 6/26/2015 AB-10SL 92256383001 6/26/2015 AB-15S 92255785001 6/22/2015 AB-25S 92256382002 6/26/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter shading + bold - indicates exceedance of NC 2L or IMAC Criteria. North Carolina Department of Environment and Natural Resources Division of Water Resources 02L Groundwater Quality Standards and Interim Maximum Allowable Concentrations (IMACs). April 2013 *NOTE: The IMAC value is shown where there is no applicable 02L standard. Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina , lists Interim Maximum Allowable Concentrations (IMACs). The IMACs were issued in 2010 and 2011, however NCDENR has not established a 02L standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are noted in this report for reference only. Analyte CAS RN Fraction Result Unit 15A NCAC 02L STANDARD IMAC* Vanadium Zinc Zinc Alkalinity, HCO3 Alkalinity, CO3 Alkalinity, lab Calcium Chloride Magnesium Methane Nitrogen, NO2 plus NO3 Potassium Sodium 7440-62-2 7440-66-6 7440-66-6 ALK-HCO3 ALK-CO3 ALK-LAB 7440-70-2 16887-00-6 7439-95-4 74-82-8 NO2-NO3 7440-09-7 7440-23-5 T D T N N N T N T N N T T ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l NS 1000 1000 NS NS NS NS 250000 NS NS NS NS NS 0.3 NS NS NS NS NS NS NS NS NS NS NS NS 0.62 J 8.5 J 17 89200 5000 U 89200 59100 11100 11100 29.4 J+20 U 13000 14900 3 7.3 J 7.6 J 138000 5000 U 138000 36900 12500 7070 43.4 30 6790 19500 14.6 14 12 147000 5000 U 147000 24500 15900 7050 30.3 30 18000 40800 254 10 U 51 128000 5000 U 128000 47800 15900 9480 40.1 J+20 U 9340 19200 13.3 6.1 J 10 U 85600 5000 U 85600 37400 14800 6020 44 20 U 6120 28800 Page 4 of 5 Table 7-5. Ash Basin Porewater Sample Results Sample Name Sample ID Sample Date AB-5S 92255424001 6/19/2015 AB-10S 92256383002 6/26/2015 AB-10SL 92256383001 6/26/2015 AB-15S 92255785001 6/22/2015 AB-25S 92256382002 6/26/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter shading + bold - indicates exceedance of NC 2L or IMAC Criteria. North Carolina Department of Environment and Natural Resources Division of Water Resources 02L Groundwater Quality Standards and Interim Maximum Allowable Concentrations (IMACs). April 2013 *NOTE: The IMAC value is shown where there is no applicable 02L standard. Appendix #1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina , lists Interim Maximum Allowable Concentrations (IMACs). The IMACs were issued in 2010 and 2011, however NCDENR has not established a 02L standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are noted in this report for reference only. Analyte CAS RN Fraction Result Unit 15A NCAC 02L STANDARD IMAC* Sulfate Sulfide Total Organic Carbon Total Dissolved Solids Total Suspended Solids 14808-79-8 18496-25-8 TOC TDS TSS N N N N N ug/l ug/l ug/l ug/l ug/l 250000 NS NS 500000 NS NS NS NS NS NS 125000 100 U 570 J 358000 25800 24500 100 U 1000 U 226000 29100 29800 100 U 1800 239000 36600 39300 100 U 510 J 226000 480000 74700 100 U 930 J 243000 5000 Page 5 of 5 Ta b l e 7 - 8 . A s h S a m p l e S P L P R e s u l t s Al u m i n u m A n t i m o n y Ar s e n i c Ba r i u m B e r y l l i u m B o r o n C a d m i u m C h r o m i u m C o b a l t C o p p e r I r o n L e a d M a n g a n e s e 74 2 9 - 9 0 - 5 74 4 0 - 3 6 - 0 7 4 4 0 - 3 8 - 2 7 4 4 0 - 3 9 - 3 7 4 4 0 - 4 1 - 7 7 4 4 0 - 4 2 - 8 7 4 4 0 - 4 3 - 9 7 4 4 0 - 4 7 - 3 7 4 4 0 - 4 8 - 4 7440-50-8 7 4 3 9 - 8 9 - 6 7439-92-1 7 4 3 9 - 9 6 - 5 TT T T T T T T T T T T T ug / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l NS N S 1 0 7 0 0 N S 7 0 0 2 1 0 N S 1 0 0 0 3 0 0 1 5 5 0 NS 1 N S N S 4 N S N S N S 1 N S N S N S N S Sa m p l e N a m e S a m p l e I D S a m p l e D a t e AB - 1 0 D ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 5 5 1 7 S P L P 5 / 1 6 / 2 0 1 5 1 1 9 0 1. 6 5 8 . 8 19 7 0 . 2 4 6 5 . 1 0 . 0 3 J 6 . 6 0 . 7 8 5 . 3 388 1.6 40.8 AB - 1 5 D ( 2 4 . 0 - 2 6 . 0 ) 9 2 2 5 5 7 8 7 0 0 1 6 / 2 2 / 2 0 1 5 1 1 2 0 3. 9 J 1 3 8 13 6 2 U 4 7 . 8 J 0 . 8 U 7 . 2 5 U 1 4 . 6 669 3.9 10.8 AB - 2 5 B R ( 0 - 2 ) 2 0 1 5 0 1 7 0 7 0 S P L P 5 / 2 8 / 2 0 1 5 6 2 0 0 0 . 8 1 15 . 8 23 0 0 . 5 7 5 4 . 3 0 . 1 5 12 . 3 3 . 9 9 NA 5 . 8 139 AB - 3 5 B R ( 1 8 - 1 9 . 5 ) 2 0 1 5 0 2 0 0 4 8 S P L P 6 / 1 0 / 2 0 1 5 1 5 5 0 2. 7 7 5 . 7 23 7 0 . 4 3 7 3 . 9 0 . 0 4 7 J 13 . 1 1 . 1 9.8 849 1.9 20.1 AB - 3 5 B R ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 2 0 0 4 9 S P L P 6 / 1 0 / 2 0 1 5 2 6 6 0 3. 3 3 8 . 4 19 9 0 . 2 6 7 2 . 6 0 . 0 3 J 7 . 2 1.1 5.9 3270 2.1 66.1 AB - 5 D ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 8 0 1 2 S P L P 6 / 2 / 2 0 1 5 3 7 1 0 5. 9 1 4 4 28 4 1 . 1 6 8 . 3 0 . 2 2 21 . 7 3 . 3 27.1 1350 7.4 25.2 AS - 8 B R ( 1 9 - 2 1 ) 2 0 1 5 0 1 2 0 2 7 S P L P 4 / 1 4 / 2 0 1 5 1 6 7 0 5. 8 5 2 . 6 22 4 0 . 1 5 J 1 5 6 0 . 0 8 U 2 . 4 0 . 8 5 6 . 6 1350 1.6 56.7 MW - 3 0 1 B R ( 3 - 4 ) 2 0 1 5 0 0 9 4 2 3 S P L P 4 / 1 / 2 0 1 5 1 2 3 0 2. 4 1 3 9 17 7 0 . 2 7 8 2 . 3 0 . 0 7 1 J 3 . 4 J + 0 . 7 7 4 . 8 J + 380 J+1.8 J+ 8 . 6 J + MW - 3 0 3 B R ( 7 5 - 7 6 . 5 ) 2 0 1 5 0 1 0 6 0 4 S P L P 4 / 8 / 2 0 1 5 2 2 9 0 11 . 6 3 9 . 4 27 4 0 . 2 1 1 0 7 0 . 0 3 2 J 4 . 4 0 . 6 8 5 . 2 1330 1.4 22.6 MW - 3 0 6 B R ( 7 0 - 7 1 . 5 ) 2 0 1 5 0 0 9 4 3 1 S P L P 3 / 2 5 / 2 0 1 5 4 2 9 0 0 0 . 5 U 8 . 7 10 8 0 4 . 5 73 . 7 0 . 4 6 35 . 4 8 9 . 5 100 40300 13.1 1890 MW - 3 0 8 B R ( 1 0 - 1 1 ) 2 0 1 5 0 1 3 1 9 5 S P L P 5 / 1 / 2 0 1 5 1 3 . 4 0 . 1 8 J 4 . 9 3 7 1 0 . 2 U 9 8 . 6 0 . 0 2 9 J 0 . 3 5 J 1.2 2.4 50 U 0 . 0 6 7 J 90 MW - 3 1 0 B R ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 3 1 8 5 S P L P 4 / 2 9 / 2 0 1 5 9 1 5 2. 8 1 0 2 19 3 0 . 2 U 7 1 0 . 0 2 5 J 4 . 4 0 . 6 3 2 0 4 1 . 3 2 1 . 1 MW - 3 1 1 B R ( 3 4 - 3 6 ) 2 0 1 5 0 1 8 0 1 0 S P L P 6 / 4 / 2 0 1 5 5 6 9 0 0 1. 4 2 2 . 1 7 4 5 3 1 1 0 0 . 2 3 92 . 5 3 1 . 6 77.4 69900 26.2 1470 MW - 3 1 4 B R ( 3 0 - 3 1 . 5 ) 2 0 1 5 0 1 5 5 1 3 S P L P 5 / 1 3 / 2 0 1 5 3 0 2 0 2. 5 1 1 5 19 8 0 . 3 4 9 7 . 1 J + 0 . 0 3 2 J 9 . 3 0 . 8 8 J + 2300 2.5 J+ 1 4 . 4 J + MW - 3 1 5 B R ( 2 1 - 2 2 . 5 ) 2 0 1 5 0 1 3 1 7 7 S P L P 4 / 2 3 / 2 0 1 5 6 3 3 0 2. 4 1 6 . 8 28 7 0 . 2 5 6 7 . 9 0 . 0 8 U 6 . 7 1.5 7.6 3810 2.7 86.2 MW - 3 1 7 B R ( 5 - 7 ) 2 0 1 5 0 1 3 1 8 8 S P L P 4 / 2 8 / 2 0 1 5 2 3 3 0 2. 5 8. 6 1 9 8 0 . 1 4 J 7 1 . 8 0 . 0 8 U 3 . 3 0 . 5 U J 3 . 5 1270 0.92 15.8 MW - 3 1 8 D ( 1 9 - 2 0 ) 2 0 1 5 0 1 4 2 3 7 S P L P 5 / 5 / 2 0 1 5 9 5 . 2 J + 16 7 5 . 3 20 0 0 . 2 U 1 6 0 0 . 0 8 U 0 . 8 9 J + 0 . 5 U 1 2 5 0 U 0 . 3 5 J + 1 1 . 6 J + Ge n e r a l N o t e s : ug / l - m i c r o g r a m s p e r l i t e r NA - N o t a n a l y z e d o r n o t r e p o r t e d b y a n a l y t i c a l l a b o r a t o r y T - T o t a l f r a c t i o n Co m p a r i s o n C r i t e r i a : Qu a l i f i e r N o t e s : U - - N o t d e t e c t e d a b o v e t h e r e p o r t i n g d e t e c t i o n l i m i t . J - - E s t i m a t e d C o n c e n t r a t i o n J+ - - E s t i m a t e d c o n c e n t r a t i o n , b i a s e d h i g h . J- - - E s t i m a t e d c o n c e n t r a t i o n , b i a s e d l o w . *N O T E : T h e I M A C v a l u e i s s h o w n w h e r e t h e r e i s n o a p p l i c a b l e 0 2 L st a n d a r d . A p p e n d i x # 1 o f 1 5 A N C A C S u b c h a p t e r 0 2 L Cl a s s i f i c a t i o n s an d W a t e r Q u a l i t y S t a n d a r d s A p p l i c a b l e t o t h e G r o u n d w a t e r s o f N o r t h Ca r o l i n a , l i s t s I n t e r i m M a x i m u m A l l o w a b l e C o n c e n t r a t i o n s ( I M A C s ) . T h e IM A C s w e r e i s s u e d i n 2 0 1 0 a n d 2 0 1 1 , h o w e v e r N C D E N R h a s n o t es t a b l i s h e d a 0 2 L s t a n d a r d f o r t h e s e c o n s t i t u e n t s a s d e s c r i b e d i n 1 5 A NC A C 0 2 L . 0 2 0 2 ( c ) . F o r t h i s r e a s o n , I M A C s a r e n o t e d i n t h i s r e p o r t f o r re f e r e n c e o n l y . IM A C * NS - N o a p p l i c a b l e s t a n d a r d f o r t h i s p a r a m e t e r sh a d i n g + b o l d - i n d i c a t e s e x c e e d a n c e o f N C 2 L o r I M A C Cr i t e r i a . No r t h C a r o l i n a D e p a r t m e n t o f E n v i r o n m e n t a n d N a t u r a l Re s o u r c e s D i v i s i o n o f W a t e r R e s o u r c e s 0 2 L G r o u n d w a t e r Qu a l i t y S t a n d a r d s a n d I n t e r i m M a x i m u m A l l o w a b l e Co n c e n t r a t i o n s ( I M A C s ) . A p r i l 2 0 1 3 An a l y t e CA S R N Fr a c t i o n Re s u l t U n i t 15 A N C A C 0 2 L S T A N D A R D Page 1 of 2 Ta b l e 7 - 8 . A s h S a m p l e S P L P R e s u l t s Sa m p l e N a m e S a m p l e I D S a m p l e D a t e AB - 1 0 D ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 5 5 1 7 S P L P 5 / 1 6 / 2 0 1 5 AB - 1 5 D ( 2 4 . 0 - 2 6 . 0 ) 9 2 2 5 5 7 8 7 0 0 1 6 / 2 2 / 2 0 1 5 AB - 2 5 B R ( 0 - 2 ) 2 0 1 5 0 1 7 0 7 0 S P L P 5 / 2 8 / 2 0 1 5 AB - 3 5 B R ( 1 8 - 1 9 . 5 ) 2 0 1 5 0 2 0 0 4 8 S P L P 6 / 1 0 / 2 0 1 5 AB - 3 5 B R ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 2 0 0 4 9 S P L P 6 / 1 0 / 2 0 1 5 AB - 5 D ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 8 0 1 2 S P L P 6 / 2 / 2 0 1 5 AS - 8 B R ( 1 9 - 2 1 ) 2 0 1 5 0 1 2 0 2 7 S P L P 4 / 1 4 / 2 0 1 5 MW - 3 0 1 B R ( 3 - 4 ) 2 0 1 5 0 0 9 4 2 3 S P L P 4 / 1 / 2 0 1 5 MW - 3 0 3 B R ( 7 5 - 7 6 . 5 ) 2 0 1 5 0 1 0 6 0 4 S P L P 4 / 8 / 2 0 1 5 MW - 3 0 6 B R ( 7 0 - 7 1 . 5 ) 2 0 1 5 0 0 9 4 3 1 S P L P 3 / 2 5 / 2 0 1 5 MW - 3 0 8 B R ( 1 0 - 1 1 ) 2 0 1 5 0 1 3 1 9 5 S P L P 5 / 1 / 2 0 1 5 MW - 3 1 0 B R ( 2 0 - 2 1 . 5 ) 2 0 1 5 0 1 3 1 8 5 S P L P 4 / 2 9 / 2 0 1 5 MW - 3 1 1 B R ( 3 4 - 3 6 ) 2 0 1 5 0 1 8 0 1 0 S P L P 6 / 4 / 2 0 1 5 MW - 3 1 4 B R ( 3 0 - 3 1 . 5 ) 2 0 1 5 0 1 5 5 1 3 S P L P 5 / 1 3 / 2 0 1 5 MW - 3 1 5 B R ( 2 1 - 2 2 . 5 ) 2 0 1 5 0 1 3 1 7 7 S P L P 4 / 2 3 / 2 0 1 5 MW - 3 1 7 B R ( 5 - 7 ) 2 0 1 5 0 1 3 1 8 8 S P L P 4 / 2 8 / 2 0 1 5 MW - 3 1 8 D ( 1 9 - 2 0 ) 2 0 1 5 0 1 4 2 3 7 S P L P 5 / 5 / 2 0 1 5 Ge n e r a l N o t e s : ug / l - m i c r o g r a m s p e r l i t e r NA - N o t a n a l y z e d o r n o t r e p o r t e d b y a n a l y t i c a l l a b o r a t o r y T - T o t a l f r a c t i o n Co m p a r i s o n C r i t e r i a : Qu a l i f i e r N o t e s : U - - N o t d e t e c t e d a b o v e t h e r e p o r t i n g d e t e c t i o n l i m i t . J - - E s t i m a t e d C o n c e n t r a t i o n J+ - - E s t i m a t e d c o n c e n t r a t i o n , b i a s e d h i g h . J- - - E s t i m a t e d c o n c e n t r a t i o n , b i a s e d l o w . *N O T E : T h e I M A C v a l u e i s s h o w n w h e r e t h e r e i s n o a p p l i c a b l e 0 2 L st a n d a r d . A p p e n d i x # 1 o f 1 5 A N C A C S u b c h a p t e r 0 2 L Cl a s s i f i c a t i o n s an d W a t e r Q u a l i t y S t a n d a r d s A p p l i c a b l e t o t h e G r o u n d w a t e r s o f N o r t h Ca r o l i n a , l i s t s I n t e r i m M a x i m u m A l l o w a b l e C o n c e n t r a t i o n s ( I M A C s ) . T h e IM A C s w e r e i s s u e d i n 2 0 1 0 a n d 2 0 1 1 , h o w e v e r N C D E N R h a s n o t es t a b l i s h e d a 0 2 L s t a n d a r d f o r t h e s e c o n s t i t u e n t s a s d e s c r i b e d i n 1 5 A NC A C 0 2 L . 0 2 0 2 ( c ) . F o r t h i s r e a s o n , I M A C s a r e n o t e d i n t h i s r e p o r t f o r re f e r e n c e o n l y . IM A C * NS - N o a p p l i c a b l e s t a n d a r d f o r t h i s p a r a m e t e r sh a d i n g + b o l d - i n d i c a t e s e x c e e d a n c e o f N C 2 L o r I M A C Cr i t e r i a . No r t h C a r o l i n a D e p a r t m e n t o f E n v i r o n m e n t a n d N a t u r a l Re s o u r c e s D i v i s i o n o f W a t e r R e s o u r c e s 0 2 L G r o u n d w a t e r Qu a l i t y S t a n d a r d s a n d I n t e r i m M a x i m u m A l l o w a b l e Co n c e n t r a t i o n s ( I M A C s ) . A p r i l 2 0 1 3 An a l y t e CA S R N Fr a c t i o n Re s u l t U n i t 15 A N C A C 0 2 L S T A N D A R D Me r c u r y Mo l y b d e n u m N i c k e l S e l e n i u m S t r o n t i u m T h a l l i u m V an a d i u m Z i n c C a l c i u m M a g n e s i u m P o t a s s i u m S o d i u m 74 3 9 - 9 7 - 6 74 3 9 - 9 8 - 7 7 4 4 0 - 0 2 - 0 7 7 8 2 - 4 9 - 2 7 4 4 0 - 2 4 - 6 74 4 0 - 2 8 - 0 7 4 4 0 - 6 2 - 2 7 4 4 0 - 6 6 - 6 7440-70-2 7 4 3 9 - 9 5 - 4 7440-09-7 7 4 4 0 - 2 3 - 5 TT T T T T T T T T T T ug / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l u g / l 1 N S 1 0 0 2 0 N S N S N S 1 0 0 0 N S N S N S N S NS N S N S N S N S 0 . 2 0 . 3 N S N S N S N S N S 0. 2 U 2 . 2 2 . 3 6 . 8 1 2 4 0 . 1 4 74 . 2 56 4 5 4 0 3 7 8 3 3 8 1 7 0 0 0. 2 U 5 U 2 . 5 J 38 . 1 12 2 0 . 1 7 J 88 . 2 50 U 6 2 6 0 6 4 9 3 1 5 J 9 6 9 0 J + 0. 0 3 8 J 4 6 . 2 4 . 2 3 5 . 3 J + 0. 3 2 2 5 . 7 83 . 9 1 0 1 0 4 2 4 3 7 1 0 3 9 7 0. 0 6 J + 1 . 6 3 . 4 1 7 . 2 1 2 3 0. 2 2 6 2 . 5 36 . 3 5 3 1 0 5 0 9 4 5 5 1 9 1 0 0. 0 4 6 J 1 4 . 1 3 . 6 6 . 3 6 1 . 2 0 . 0 7 5 J 32 . 2 43 3 6 6 0 9 9 3 7 6 3 2 1 8 0 0. 2 U 2 9 . 5 21 . 4 19 6 0. 5 8 1 7 8 28 . 7 9 6 5 0 6 3 0 6 0 8 1 6 5 0 0. 2 U 1 4 . 5 2 . 3 6 . 2 1 6 6 0 . 0 6 3 J 14 . 7 51 . 5 4 3 9 0 7 9 2 1 0 3 0 2 2 4 0 0. 2 U 4 J + 2 . 1 J + 1 0 . 3 2 0 5 0 . 1 4 69 . 6 11 . 8 J 7 2 0 0 9 4 6 3 3 8 1 6 9 0 0. 2 U 3 6 . 5 2 1 4 2 5 4 0 . 0 6 1 J 55 . 9 42 . 1 4 2 6 0 8 9 7 1 0 1 0 2 0 7 0 0. 6 U 0 . 4 9 J + 4 7 . 4 2 . 4 3 0 6 0. 2 1 2 9 . 6 30 7 J + 1 4 9 0 0 1 7 1 0 0 5 0 2 0 2 0 4 0 0. 2 U 0 . 5 U 1 . 9 0 . 5 5 1 0 1 0 . 0 8 7 J 1 U 1 0 7 1 5 5 0 3 5 8 2 0 7 0 7 3 1 0. 2 U 2 . 4 1 . 8 4 . 6 1 8 7 0 . 0 8 5 J 79 . 1 37 7 4 9 0 3 9 4 3 1 5 1 4 7 0 0. 0 3 6 J 1 6 . 5 4 9 . 2 3 . 2 1 3 4 0. 7 4 2 3 2 21 3 5 3 4 0 5 7 5 0 4 8 7 0 2 1 7 0 0. 2 U 4 . 6 2 . 9 7 . 3 2 3 8 0. 2 2 1 6 7 18 . 9 8 1 3 0 8 9 3 4 6 3 J + 1 4 7 0 0. 2 U 6 . 3 3 . 8 6 . 9 1 5 3 0 . 0 9 J 20 45 . 8 5 9 5 0 1 2 4 0 1 3 7 0 1 4 6 0 0. 2 U 3 . 4 1 . 3 1 . 5 1 0 8 0 . 1 2 7. 2 38 . 5 4 4 7 0 1 2 0 0 2 9 1 0 2 4 6 0 0. 2 U 2 8 . 2 0 . 9 5 J + 5 . 1 3 1 2 0 . 1 U 61 . 8 43 . 6 1 2 9 0 0 7 5 0 5 2 2 J + 2 6 4 0 Page 2 of 2 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Soil 30.0-31.5 TI,TOC Soil 40.0-40.5 TI,TOC Soil 102.0-104.0 TI, TOC Soil 33.0-35.0 Kd + HFO + Mineralogy Soil 34.0-36.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 Soil 19.0-20.0 TI,TOC Soil 24.0-25.0 TI,TOC PWR 49.0-50.0 TI,TOC GWA-2S 31.5 Soil 5.0-6.7 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling 1-UD Soil 5.0-6.5 TI,TOC Soil 20.0-21.4 TI,TOC Soil 25.0-25.9 TI,TOC Rock 29.0-29.83 TI Evaluate preferential pathway GWA-3S 29 Soil 25.0-25.8 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD-1 GW Modeling 1 UD, 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) UD-1 Soil 28 TI,TOC Soil 33 TI,TOC PWR 38 TI, TOC GWA-4S 37 Soil 33.0-35.0 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD-1 GW Modeling 1 UD, 1 KD + HFO (3-gallons and 1 geotech jar) UD-1 Evaluate soil quality outside ash basin waste boundary, cross sections _ 0 1 0 GW Modeling 1 UD, 1 KD + HFO (3-gallons and 1 geotech jar) UD-1 Evaluate soil quality outside ash basin waste boundary, cross sections 56 _ GWA-3D 41.6 Located Outside Ash Basin Waste Boundary -Throughout Site GWA-4D GWA-1D 120 GWA-2D 69 Evaluate soil quality outside ash basin waste boundary, cross sections _ GWA-1S 47 0 Evaluate soil quality outside ash basin waste boundary, cross sections _ Page 1 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout SiteSoil16.0-17.0 TI,TOC Soil 22.0-23.0 TI,TOC Soil 25 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD-1 PWR 34.0-35.0 TI,TOC Evaluate soil quality outside ash basin waste boundary, cross sections _ Soil 37 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 UD (soil/saprolite), immediatley above refusal UD-2 Soil 29.0-30.0 HFO 1 HFO (2-gallons bulk sample) Soil 5.0-10.0 TI,TOC Soil 15.0-20.0 TI,TOC Soil 20.0-22.0 TI,TOC Rock 27.4-28.42 TI Evaluate preferential pathway Soil 20.0-21.5 TI,TOC Soil 30.0-31.5 TI,TOC Soil 40.0-41.5 TI,TOC PWR 55.0-56.0 TI, TOC Soil 5.0-6.25 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 UD 1 PWR 30.0-31.75 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 UD-2 Soil 9.0-10.0 TI,TOC Soil 19.0-20.0 TI,TOC Soil 25 TI,TOC Soil 25.3-25.5 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 UD-1 Soil 28-29 TI, TOC, Kd + HFO 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) Rock 31.8-32.8 TI Evaluate preferential pathway _ Evaluate soil quality outside ash basin waste boundary, cross sections _GWA-9D Evaluate soil quality outside ash basin waste boundary, cross sections Evaluate soil quality outside ash basin waste boundary, cross sections 49 0GWA-7S 34 GWA-8D 42 _1 GWA-9S 77 GW Modeling 1 0 _ Evaluate soil quality outside ash basin waste boundary, cross sections GW Modeling _ GWA-10D 45.5 GW Modeling Page 2 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout SiteSoil10.0-11.5 TI,TOC Soil 25.0-26.5 TI,TOC Soil 23.0-25.0 Kd + HFO 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) GWA-11S 26 Soil 23.0-23.5 Moisture, grain size, hydraulic conductivity, specific gravity UD- 1 UD 1 Soil 10.0-11.5 TI,TOC Soil 15.0-15.2 TI,TOC Soil 20.0-21.0 TI,TOC Soil 13.0-15.0 Moisture, grain size, hydraulic conductivity, and specific gravity + Kd + HFO + Minerology UD-1 GW Modeling 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) UD-1 GWA-12S 16 Soil 13.0-14.6 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 GW Modeling UD-2 0 GWA-14D 24 Soil 4.0-6.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 GWA-14S 9 Soil 4.0-6.0 TI, TOC Evaluate soil quality outside ash basin waste boundary, cross sections _ GWA-15D 34.1 Soil 18.0-21.0 TI,TOC Evaluate soil quality outside ash basin waste boundary, cross sections _0 Soil 0.0-4.5 TI,TOC Soil 5.0-6.5 TI,TOC Soil 8.0-12.0 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD-1 GW Modeling 1 UD, 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) Soil 9.0-10.0 TI,TOC Soil 13.0-14.0 TI,TOCGWA-6S 20 GWA-5BR 62.5 GWA-11D Evaluate soil quality outside ash basin waste boundary, cross sections _ Evaluate soil quality outside ash basin waste boundary, cross sections Evaluate soil quality outside ash basin waste boundary, cross sections _ _ _ 0GWA-12D 0 Evaluate soil quality outside ash basin waste boundary, cross sections 41.7 37 0 GW Modeling 0 0 Page 3 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout Site Ash 15.0-20.0 TI,TOC Ash 20.0-21.5 TI,TOC,SPLP Ash 25.0-26.5 TI,TOC PWR 27.0-27.3 TI,TOC PWR 29.5-29.7 TI,TOC PWR 30.0-31.5 TI, TOC AB-5S 23 Soil 9.0-11.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 Soil 10.0-11.5 TI, TOC Ash 20.0-21.5 TI,TOC,SPLP Ash 30.0-31.5 TI,TOC Ash 40.0-41.5 TI,TOC Soil 45.0-46.5 TI,TOC Soil 60.0-60.7 TI, TOC 5.0-7.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 UD-1 48.0-49.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 UD-2 49.0-50.0 Kd + HFO + Mineralogy 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) Ash 3.0-5.0 TI,TOC Ash 24.0-26.0 TI,TOC,SPLP Soil 26.0-26.5 TI,TOC Ash 10.0-12.5 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 UD 1 Soil 51.0-53.5 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 _ Soil 3.0-5.0 TI, TOC Soil 15.0-16.5 TI, TOC Soil 30.0-31.5 TI, TOC Soil 45.0-46.5 TI, TOC GW Modeling _ Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections AB-10SL 50 Soil AB-25S _ 53.5 AB-30D 63 Located Within Active Ash Basin AB-15D 26.5 0 45 AB-10D 83 AB-5D _ GW Modeling 0 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 0 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 0 0 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ Page 4 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout Site Soil 3.0-5.0 Kd + HFO + Mineralogy 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) Soil 15.0-17.0 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD-1 UD 1 Soil 32.0-34.0 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD 2 UD 2 Soil 43.0-44.0 Moisture, grain size, hydraulic conductivity, and specific gravity, Kd + HFO + Minerology UD-3 UD 3 Ash 3.0-5.0 TI, TOC Ash 20.0-21.5 TI,TOC Ash 18.0-19.5 TI,TOC,SPLP Soil 25.0-25.5 TI,TOC Soil 30.0-31.5 TI,TOC Ash 3.0-5.0 TI,TOC _ Ash 19.0-21.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 UD 1 Soil 34.0-36.0 TI,TOC,SPLP _ Soil 39.0-41.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 UD 2 Soil 44.0-46.0 TI,TOC _ Soil 3.0-5.0 TI,TOC Soil 5.0-6.5 TI,TOC Soil 20.0-21.5 TI,TOC Soil 30.0-31.5 TI,TOC Soil 47.0-51.0 Kd + HFO GW Modeling 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) 0 115 AB-35BR 95 AB-30BR Refine ash thickness, evaluate ash and underlying soil quality, cross-sections AS-2D 66 0 Refine ash thickness, evaluate ash and underlying soil quality, cross-sections MW-311 BR 133.5 _ Located Within Ash Storage Refine ash thickness, evaluate ash and underlying soil quality, cross-sections _ 0 0 GW Modeling Page 5 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout Site Ash 3.0-4.0 TI,TOC Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ 5.0-7.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 Ash 11.0-12.5 Ti, TOC Soil 16.0-17.5 TI,TOC Soil 21.0-22.5 TI,TOC Soil 22.0-23.0 HFO GW Modeling 2 HFO (1-gallon bulk sample) Ash 4.0-4.5 TI,TOC Ash 10.0-11.0 HFO Soil 19.5-21.0 TI,TOC Soil 39.5-41.0 TI,TOC Rock 48.0-48.25 TI Evaluate preferential pathway Ash 3.0-5.0 TI,TOC Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ Ash 5.0-7.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling 1 UD Soil 27.0-28.5 TI,TOC Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ Soil 28.5-28.7 Moisture, grain size, hydraulic conductivity, specific gravity UD-2 GW Modeling UD 2 Soil 32.0-33.3 TI,TOC Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ AS-8BR 111 Ash 19.0-21.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-3 GW Modeling UD 3 0 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sectionsAS-6D 62 61AS-8D AS-4D 42 0 1_ _Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash Page 6 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout SiteSoil4.0-4.5 TI,TOC Soil 15.0-15.5 TI,TOC Soil 10.0-11.0 TI,TOC, HFO PWR 30.0-30.3 TI,TOC Soil 5.0-6.5 TI,TOC Soil 15.0-16.5 TI,TOC Soil 20.0-21.5 TI,TOC Ash 3.0-4.0 TI,TOC, SPLP PWR 5.0-7.0 TI,TOC PWR 15.0-16.0 TI,TOC PWR 30.0-31.0 TI,TOC Ash 25.0-26.5 TI,TOC Ash 50.0-51.5 TI,TOC,SPLP Ash 75.0-76.5 TI,TOC SAP 80.0-81.5 TI,TOC Rock 90.0-91.5 TI Evaluate preferential pathway Ash 40.0-41.5 TI,TOC,SPLP Ash 55.0-56.5 TI,TOC Ash 70.0-71.5 TI,TOC Ash 3.0-4.5 TI,TOC Ash 21.0-22.5 TI,TOC,SPLP Soil 24.0-25.5 TI,TOC Soil 34.0-35.5 TI,TOC Ash 5.0-7.0 TI,TOC,SPLP Soil 10.0-11.0 TI,TOC Soil 15.0-16.0 TI,TOC Soil 48.0-50.0 HFO 1 HFO (2-gallons bulk sample) Soil 59.5-59.8 Kd _ Ash 3.0-5.0 TI,TOC Ash 19.0-20.0 TI,TOC,SPLP Soil 24.0-25.0 TI,TOC Soil 41.5 HFO GW Modeling 1 HFO (2-gallons bulk sample) Rock 42.5-43.42 TI Evaluate preferential pathway _ 0 0 0 Evaluate soil quality outside ash basin waste boundary, cross sections MW-303BR 150 _ _ AS-12S Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 82.5MW-301BR 44.2 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 28.9 AS-10D MW-315BR 104.3 MW-317 BR 109.8 MW-306BR 130 Refine ash thickness (if present), evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ 50MW 318BR _ _ _ 0 0 1 0 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 1 GW Modeling _ Page 7 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout Site Fill 0.0-2.0 TI, TOC Ash 3.0-5.0 TI,TOC,SPLP Ash 10.0-12.5 UD-1 GW Modeling 1 UD Ash 40.0-41.0 TI,TOC Soil 45.0-46.0 TI,TOC Soil 50.0-51.0 TI,TOC Soil 51.0-53.5 UD-2 GW Modeling UD-2 Soil 3.0-5.0 TI,TOC, KD and HFO Soil 15.0-17.0 TI,TOC Soil 30.0-31.5 TI,TOC Soil 45.0-46.5 TI,TOC Ash 3.0-5.0 TI,TOC Ash 10.0-11.0 TI,TOC,SPLP PWR 20.0-21.0 TI,TOC PWR 25.0-26.0 TI,TOC Soil 10.0-11.5 TI,TOC Ash 20.0-21.5 TI,TOC,SPLP Soil 25.0-26.5 TI,TOC Soil 35.0-35.4 TI,TOC Ash 10.0-11.5 TI,TOC Ash 20.0-21.5 TI,TOC,SPLP Soil 30.0-31.5 TI,TOC Soil 40.0-41.5 TI,TOC Soil 45.0-50.45 TI, TOC 0 0 HFO 1 GW Modeling Located on Active Ash Basin Dam/Dike MW-308BR 88 Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections GW Modeling 1 HFO (2-gallons bulk sample) 1 HFO (2-gallons bulk sample) GW Modeling 149 88 Soil 35.0-37.0 37 99.1 MW-310BR AB-25BR MW 314BR Evaluate preferential pathway _TI, TOC HFO Rock Soil 1 HFO (2-gallons bulk sample)45.0-46.5 57.0-57.5 AB-30D Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections _ Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections 0 0 _ _ GW Modeling63 HFOPWR _ Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash _ _ Page 8 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout SiteAsh7.0-8.0 TI,TOC Ash 17.0-23.0 TI,TOC,SPLP Soil 19.6-21.6 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 Soil 27.0-29.0 TI,TOC PWR 29.0-31.0 TI,TOC Soil 1.0-2.0 TI,TOC Soil 10.0-11.5 TI,TOC Soil 15.0-16.5 TI,TOC Soil 20.0-21.5 TI,TOC Soil 25.0-26.5 TI,TOC Soil 35.0-35.5 TI,TOC Soil 1.0-2.0 TI,TOC Soil 10.0-11.5 TI,TOC Soil 20.0-21.5 TI,TOC Soil 30.0-31.25 TI,TOC Soil 35.0-36.0 TI,TOC Soil 65.0-65.3 TI,TOC Soil 1.0-2.0 TI,TOC Soil 10.0-11.5 TI,TOC Soil 20.0-21.5 TI,TOC Soil 35.0-37.5 TI,TOC Soil 40.0-40.3 TI,TOC Soil 45.0-45.2 TI,TOC Soil 1.0-2.0 TI,TOC Evaluate background soil concentrations of total inorganics _ Soil 9.0-9.5 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 Rock 10.0-12.0 TI,TOC Evaluate background soil concentrations of total inorganics _ BG-1D 22 Soil 0.0-2.0 TI,TOC Establish background concentrations of total inorganics _0 0 Evaluate background soil conditions between compliance boundary and well MW-23BR _ _0 0 Evaluate background soil conditions between compliance boundary and well MW-23BR 27.0-27.2 Background Locations 0 0SB-3 45.3 Evaluate background soil conditions between compliance boundary and well MW-23BR 63MW-23BR _ Moisture, grain size, hydraulic conductivity, and specific gravity + Kd + HFO + Minerology UD-2 84.9MW-22BR 1 UD, 1 KD + HFO (3-gallons bulk sample and 1 geotech jar) UD 2SoilGW Modeling Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash leachability, cross-sections Refine ash thickness, evaluate ash and underlying soil quality, evaluate ash _ _ SB-2 68 SB-1 40 Page 9 of 10 Table 8-1. Solid Matrix Sampling Plan Boring ID Boring Depth (Ft. BGS) Sample Media Sample Depths/Intervals/Target Zones Lab Analyses Purpose/Notes Index Parameter Samples No. of Rock Samples for Total Inorganics Located Outside Ash Basin Waste Boundary -Throughout Site Soil 1.0-2.0 TI,TOC Establish background concentrations of total inorganics _ Soil 7.0-9.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling 1 UD (soil/saprolite) PWR 10.0-12.0 TI,TOC PWR 13.0-15.0 TI,TOC PWR 17.0-19.0 TI,TOC PWR 19.0-21.0 TI,TOC PWR 21.0-23.0 TI,TOC BG-5S 23 PWR 13.0-14.0 Moisture, grain size, hydraulic conductivity, specific gravity UD-1 GW Modeling UD 1 0 AB: Ash Basin Well MW: Monitoring Well BG: Background Well PWR: Partially Weathered Rock BR: Bedrock S: Shallow Well D: Deep Well SAP: Saprolite Ft. BGS: Feet Below Ground Surface SB: Soil Boring GW: Ground Water SPLP: Synthetic Precipitation Leaching Procedure GWA: Ground Water Assessment Well TI: Total Inorganics HFO: Heavy Fuel Oil TOC: Total Orgnic Carbon Kd: Soil Sorbtion Coefficient Measurement UD: Undisturbed Sample (Shelby Tube) 0BG-5D 39.6 _ Terms Establish background concentrations of total inorganics Page 10 of 10 Page 1 of 1 Table 8-2. Soil, Ash, and Rock Parameters and Constituent Analysis – Analytical Methods INORGANIC COMPOUNDS UNITS METHOD Antimony mg/kg EPA 6020 Arsenic mg/kg EPA 6020 Barium mg/kg EPA 6010 Boron mg/kg EPA 6010 Cadmium mg/kg EPA 6020 Chloride mg/kg SM4500-Cl-E Chromium mg/kg EPA 6010 Copper mg/kg EPA 6010 Iron mg/kg EPA 6010 Lead mg/kg EPA 6020 Manganese mg/kg EPA 6010 Mercury mg/kg EPA Method 7470A/7471 Nickel mg/kg EPA 6010 pH SU EPA 9045 Selenium mg/kg EPA 6020 Thallium (low level) mg/kg EPA 6020 Zinc mg/kg EPA 6010 Total Organic Carbon UNITS METHOD TOC Mg/kg EPA 9060 Notes: 1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above. 2. Ash samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045; select ash samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020. SPLP results to be reported in units of mg/L for comparison to 2L Standards. 3. Samples to be analyzed for Total Organic Carbon using method EPA 9060. Sample result in concentration units of mg/kg of organic carbon on a dry weight basis. Table 8-3. Total Inorganic Results Background Soil Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead Manganese 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 7439-96-5 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 800 5200 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 270 65 Sample Name Sample ID Sample Date BG-1D(0-2)2015015888 5/19/2015 7980 J 7.9 UJ 7.9 UJ 51.8 J+0.46 19.8 U 0.95 U 15.5 5.6 J+12.1 16500 10.8 J+177 BG-5D(1-2)2015017061 5/27/2015 13200 6.3 R 3.9 J-57.8 J+0.56 15.7 UJ 0.75 UJ 40.2 J-6.8 J-21.7 30400 15.1 113 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Page 1 of 3 Table 8-3. Total Inorganic Results Background Soil Sample Name Sample ID Sample Date BG-1D(0-2)2015015888 5/19/2015 BG-5D(1-2)2015017061 5/27/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium Chloride Magnesium Nitrate Potassium 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 16887-00-6 7439-95-4 14797-55-8 7440-09-7 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 8 1200 4400 1200 100000 2.4 1200 70000 NS NS NS 100000 NS 1 NS 130 2.1 NS 0.28 6 1200 NS NS NS NS NS 0.033 4 U 4.6 5.9 U 6.7 7.9 UJ 27.9 20.6 475 367 U 1290 J+36.7 UJ 486 0.026 3.1 U 7.4 6.3 R 6.5 6.3 UJ 45.9 26.7 248 325 U 1110 32.5 UJ 684 Page 2 of 3 Table 8-3. Total Inorganic Results Background Soil Sample Name Sample ID Sample Date BG-1D(0-2)2015015888 5/19/2015 BG-5D(1-2)2015017061 5/27/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Sodium Sulfate pH (field)Total Organic Carbon 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg Std. Units mg/kg NS NS NS NS NS NS NS NS 395 U 367 U 5.2 J 7020 314 U 325 U 5.1 J 1560 Page 3 of 3 Table 8-4. Total Inorganic Results - Background PWR and Bedrock Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 800 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 270 Matrix Sample Name Sample ID Sample Date PWR BG-5D(10-12)2015017062 5/27/2015 10100 5.8 U 5.8 U 151 1.1 14.5 U 0.7 U 14 17.6 40.6 23900 21.5 PWR BG-5D(13-15)2015017066 5/27/2015 11600 5.4 U 4.6 J 91.1 1.4 13.5 U 0.65 U 16.4 10.7 16.9 27200 19.9 PWR BG-5D(17-19)2015017063 5/27/2015 8570 5.7 U 5.7 U 46.2 0.54 14.1 U 0.68 U 10.3 10.1 17.1 18400 14 PWR BG-5D(19-21)2015017065 5/27/2015 8430 7.1 U 7.1 U 88.6 0.49 17.8 U 0.86 U 12.7 13.3 15.8 15700 16.2 PWR BG-5D(21-23)2015017064 5/27/2015 17200 6.1 U 6.1 U 90.3 0.69 15.2 U 0.73 U 22.5 15.7 23 30200 6.4 Rock MW-23BR(10-12)2015014249 5/9/2015 15100 5.3 U 9.7 177 0.66 13.4 U 0.64 U 16.6 16.2 53 35600 16.2 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG bold - indicates exceedance of NC Industrial Health Based PSRG Shading indicates exceedance of either applicable criteria. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Page 1 of 3 Table 8-4. Total Inorganic Results - Background PWR and Bedrock Matrix Sample Name Sample ID Sample Date PWR BG-5D(10-12)2015017062 5/27/2015 PWR BG-5D(13-15)2015017066 5/27/2015 PWR BG-5D(17-19)2015017063 5/27/2015 PWR BG-5D(19-21)2015017065 5/27/2015 PWR BG-5D(21-23)2015017064 5/27/2015 Rock MW-23BR(10-12)2015014249 5/9/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG bold - indicates exceedance of NC Industrial Health Based PSRG Shading indicates exceedance of either applicable criteria. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium Chloride Magnesium 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 16887-00-6 7439-95-4 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 5200 8 1200 4400 1200 100000 2.4 1200 70000 NS NS NS 65 1 NS 130 2.1 NS 0.28 6 1200 NS NS NS 982 0.009 U 2.9 U 13 3.1 J 20.6 5.8 U 25.1 47.1 1160 287 U 2350 323 0.0088 U 2.7 U 15.6 7.3 29.3 5.4 U 21.8 65.4 2400 278 U 3300 585 0.0093 U 2.8 U 14.3 5.7 U 26.1 5.7 U 20.5 47.3 2600 282 U 2890 925 0.011 U 3.6 U 11.1 7.1 U 20.9 7.1 U 20.3 42.7 2270 345 U 3180 655 0.0098 U 3 U 22.6 6.1 U 27 6.1 U 24.8 79.7 2330 293 U 7580 1180 0.009 3.7 26.6 5.3 U 280 5.3 U 19.2 113 52500 256 U 9160 Page 2 of 3 Table 8-4. Total Inorganic Results - Background PWR and Bedrock Matrix Sample Name Sample ID Sample Date PWR BG-5D(10-12)2015017062 5/27/2015 PWR BG-5D(13-15)2015017066 5/27/2015 PWR BG-5D(17-19)2015017063 5/27/2015 PWR BG-5D(19-21)2015017065 5/27/2015 PWR BG-5D(21-23)2015017064 5/27/2015 Rock MW-23BR(10-12)2015014249 5/9/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. NS - No applicable standard for this parameter North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG bold - indicates exceedance of NC Industrial Health Based PSRG Shading indicates exceedance of either applicable criteria. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG Nitrate Potassium Sodium Sulfate pH (field)Total Organic Carbon 14797-55-8 7440-09-7 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg mg/kg mg/kg Std. Units mg/kg 100000 NS NS NS NS NS NS NS NS NS NS NS 28.7 UJ 939 290 U 287 U 6.6 J 577 J 27.8 UJ 1170 270 U 278 U 7.1 J 348 J 28.2 UJ 727 283 U 282 U 7.5 J 673 U 34.5 UJ 998 357 U 345 U 7.3 J 574 J 29.3 UJ 2090 304 U 293 U 8.1 J 482 J 25.6 UJ 1740 267 U 256 U 7.8 J 23600 Page 3 of 3 Table 8-5. Total Inorganic Results Soil Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 Sample Name Sample ID Sample Date AB-10D(10-11.5)2015015518 5/16/2015 13200 5.8 U 5.8 U 124 1.9 18.3 0.7 U 16.3 11.9 21.5 26700 AB-10D(45-46.5)2015015519 5/16/2015 15300 6.2 U 6.2 U 180 1.1 21.5 0.74 U 33.4 13.1 20.7 27200 AB-10D(60-60.7)2015015521 5/18/2015 6360 5.7 U 5.7 U 47 0.52 14.1 U 0.68 U 12.7 5.5 J 5.2 12700 AB-15D (26.0-26.5)92255787002 6/22/2015 12300 7.1 U 9 157 0.95 17.7 U 0.85 U 23.8 7.1 U 10.4 26700 AB-25BR(0-2)2015017070 5/28/2015 7880 5.9 U 21.6 313 1.5 14.7 U 0.7 U 19.6 10.2 22.6 12400 AB-25BR(45-46)2015017073 5/30/2015 12900 7 U 71.8 155 0.8 17.5 U 0.84 U 27.6 11.9 16 22500 AB-25BR(50-51)2015017074 5/30/2015 8950 7.2 U 7.8 106 0.57 18 U 0.86 U 29.7 10.4 14.2 16900 AB-30D(3-5)2015018005 6/2/2015 10200 7 U 7 U 134 0.99 17.6 U 0.84 U 14.8 13.5 16.5 19800 AB-30D(15-16.5)2015018006 6/2/2015 12900 7.7 U 7.7 U 98 1 19.2 U 0.92 U 18.9 9.9 16.2 23400 AB-30D(30-31.3)2015018007 6/2/2015 18500 6.5 U 6.5 U 62.9 0.63 16.2 U 0.78 U 54.1 7.2 21.7 52400 AB-30D(45-46.5)2015018008 6/2/2015 2300 5.4 U 5.4 U 15.1 0.27 U 13.4 U 0.64 U 34.7 5.4 U 3.7 6400 AB-35BR(25.0-26.5)2015020045 6/5/2015 12400 5.3 U 3.6 J 92.2 0.99 13.3 U 0.64 U 20.6 11.5 13.2 24300 AB-35BR(30.0-31.5)2015020046 6/5/2015 9460 5.8 U 5.8 U 55.5 0.56 14.5 U 0.7 U 12.7 10 14.4 22000 AS-10D(4-4.5)2015010607 4/10/2015 14600 3.7 U 9.3 88.3 1.1 18.6 U 0.45 U 24.7 18.9 83.2 32400 AS-10D(15-15.5)2015010608 4/10/2015 14000 3.2 U 14.3 95.6 0.55 15.8 U 0.38 U 28 13.1 31.1 31900 AS-12S(5-6.5)2015014245 5/8/2015 15300 5.6 U 5.6 U 89.9 1.4 14 U 0.67 U 26.2 18.3 28.6 35400 AS-12S(15-16.5)2015014246 5/8/2015 18600 5.3 U 8.2 98.1 1.5 13.2 U 0.64 U 34.1 17.5 40.3 43200 AS-12S(20-21.5)2015014247 5/8/2015 22700 5.6 U 8.5 62.4 1.2 14 U 0.67 U 36.1 26.2 70.1 44800 AS-2D(3-5)2015018001 5/20/2015 13000 5.5 UJ 5.5 UJ 127 1.8 13.8 U 0.66 UJ 15.2 14.2 21.8 26000 AS-2D(5-6.5)2015018002 5/29/2015 10800 5.8 U 5.8 U 114 1.3 14.5 U 0.7 U 14.5 17.6 19 21100 AS-2D(20-21.5)2015018003 5/30/2015 15700 6 U 6 U 85.1 0.99 15 U 0.72 U 17.7 12.5 28.3 30900 AS-2D(30-31.5)2015018004 5/30/2015 15100 5.9 U 5.9 U 67.3 1.2 14.7 U 0.7 U 16.9 8.6 22.1 27900 AS-4D(21-22.5)2015008620 3/24/2015 6640 3 U 3 U 19.6 0.24 13.6 J 0.36 U 7.8 5.5 9.1 9660 AS-6D(4-4.5)2015010610 4/13/2015 10600 3 U 2.5 J 46.9 0.71 15 U 0.36 U 18.8 1.7 J 14.3 31400 AS-6D(19.5-21)2015012017 4/15/2015 14700 5.9 U 5.9 U 51.8 1.8 14.7 U 0.71 U 17.2 10.4 18.9 33600 AS-6D(39.5-41)2015012018 4/15/2015 21100 6.5 U 11 65.1 2 16.2 U 0.78 U 60.9 20.6 59.7 53500 AS-8D(27-28.5)2015010596 4/8/2015 8130 5.9 U 5.9 U 72.6 1.7 14.8 U 0.71 U 7.6 11.1 7.8 15500 AS-8D(32-33.3)2015010597 4/8/2015 9280 6.5 U 6.5 U 134 2.1 16.2 U 0.78 U 12.9 18.8 17 21700 BG-1D(0-2)2015015888 5/19/2015 7980 J 7.9 UJ 7.9 UJ 51.8 J+0.46 19.8 U 0.95 U 15.5 5.6 J+12.1 16500 BG-5D(1-2)2015017061 5/27/2015 13200 6.3 R 3.9 J-57.8 J+0.56 15.7 UJ 0.75 UJ 40.2 J-6.8 J-21.7 30400 GWA-10D(9-10)2015014241 5/5/2015 19900 5.7 U 5.7 U 103 2.9 14.3 U 0.69 U 14.9 18.6 12.5 27500 GWA-10D(19-20)2015014242 5/5/2015 16200 6 U 6 U 140 1.4 15.1 U 0.73 U 67.1 11.1 61.3 40000 GWA-10D(25)2015014243 5/5/2015 18500 5.3 U 5.3 U 130 1.4 13.3 U 0.64 U 20.2 16.1 10.8 40100 GWA-10D(28-29)2015014244 5/5/2015 17800 5.7 U 5.7 U 138 1.8 14.3 U 0.69 U 26.1 15.7 24.4 36700 GWA-11D(10-11.5)2015008613 3/21/2015 12300 2.8 U 2.8 U 75.9 1.1 20.9 0.33 U 9.9 9.5 8.6 16900 GWA-11D(25-26.5)2015008614 3/21/2015 16000 2.8 UJ 3 J-103 1.3 38.3 0.26 J 15.2 22.4 70.6 32900 GWA-12D(10-11.5)2015013172 4/21/2015 38900 6 U 14.8 242 1.8 62.1 0.72 U 46.2 27.2 70.4 63300 GWA-12D(15-15.2)2015013183 4/21/2015 30500 5.7 U 15 193 1.7 53.8 J 0.68 U 42.9 22.5 58.9 52200 GWA-12D(20-21)2015013173 4/22/2015 25900 5.1 U 6.9 109 1.1 63.1 0.62 U 187 21.5 69.6 62500 GWA-12S(13-15)2015013174 4/22/2015 32900 7.6 U 30.6 200 2 60.1 J 0.91 U 48.7 23.9 67.5 58700 GWA-14S(4-6)92255774004 6/19/2015 18800 6.6 U 6.6 U 248 1.7 16.6 U 1.5 26.3 18.7 78.2 57900 GWA-15D(18.0-21.0)92255774005 6/18/2015 11300 5.9 U 5.9 U 106 0.8 14.9 U 0.71 U 28.2 11.8 12.4 21500 GWA-15D(18-21)92255774006 6/18/2015 11100 11.7 U 11.7 U 104 0.78 14.7 U 1.4 U 26.3 11.5 J 12.1 21300 GWA-1D(30-31.5)2015015493 5/7/2015 14800 6.5 UJ 4.8 J-65.8 J-1.4 16.2 U 0.78 UJ 10.6 33.3 51.2 27800 GWA-1D(40-40.5)2015015499 5/7/2015 14900 5.5 U 5.5 U 148 2.8 13.7 U 0.66 UJ 23.5 20.2 61.7 42200 GWA-1D(102-104)2015015503 5/12/2015 21800 5.7 U 9.4 64.7 1.5 14.1 U 0.68 UJ 28.6 16.3 58.1 42400 GWA-2D(19-20)2015015504 5/12/2015 19500 5.8 U 3.8 J 207 2 14.4 U 0.69 UJ 30.6 18.6 41 48300 GWA-2D(24-25)2015015505 5/12/2015 17500 6 U 6 U 160 1.4 14.9 U 0.71 UJ 20.2 13.8 31.2 35900 GWA-3D(5-6.5)2015010598 4/6/2015 8390 5.5 U 5.5 U 44.6 1.6 13.9 U 0.67 U 12.7 7.1 41.4 27600 GWA-3D(20-21.4)2015010599 4/7/2015 13000 6.2 U 3.7 J 175 2.9 15.5 U 0.75 U 14.3 31.5 21.7 36900 GWA-3D(25-25.9)2015010600 4/7/2015 10000 5.8 U 5.8 U 90.3 0.95 14.5 U 0.69 U 14.7 10.7 13.3 18400 Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater Page 1 of 9 Table 8-5. Total Inorganic Results Soil Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater GWA-4D(28)2015015885 5/20/2015 12300 5.7 U 5.7 U 113 1.2 14.3 U 0.69 U 13 7.7 15.3 19000 GWA-4D(33)2015015886 5/20/2015 13000 5.5 U 5.5 U 101 1 13.8 U 0.66 U 16.5 11.9 15.7 27500 GWA-5BR(0-4.0)2015015522 5/18/2015 17600 6.1 U 6.1 U 118 1.2 15.2 U 0.73 U 38.2 21.6 21.4 36600 GWA-5BR(5-6.5)2015015523 5/19/2015 15400 6.7 U 6.7 U 126 1.1 16.7 U 0.8 U 34.2 15 20.5 30900 GWA-6S(9-11)2015020051 6/12/2015 2610 6.1 U 6.1 U 31.9 0.16 J 15.3 U 0.74 U 8.9 3.5 J 4.4 5260 GWA-6S(13.0-14.0)2015020050 6/12/2015 10700 6.5 U 6.5 U 110 0.61 16.2 U 0.78 U 24.7 13.6 16 20300 GWA-7S(16-17)2015017067 5/27/2015 10100 5.6 U 5.6 U 131 0.96 14 U 0.67 U 21.9 9.6 15 17600 GWA-7S(22-23)2015017069 5/27/2015 12900 5.7 U 3.2 J 195 2.3 14.2 U 0.68 U 17.9 16.3 13.6 25600 GWA-8D(5-10)2015013191 4/30/2015 11000 5.2 U 5.2 U 45 0.75 12.7 J 0.63 U 28.8 5.7 14.2 20900 GWA-8D(15-20)2015013192 4/30/2015 18000 5.6 U 5.6 U 72.9 1.1 30.3 J 0.67 U 29.6 16.9 22.4 32100 GWA-8D(20-22)2015013193 4/30/2015 27500 5.2 U 5.2 U 72.1 1.2 47.1 J 0.63 U 32.9 16.9 51.4 46500 GWA-9D(20-21.5)2015015508 5/13/2015 9620 5.4 U 5.4 U 34.2 0.64 13.4 U 0.64 UJ 18.8 10.5 6.4 16500 GWA-9D(30-31.5)2015015509 5/13/2015 11700 6 U 6 U 58.7 1.7 14.9 U 0.71 UJ 10.6 16.8 16.8 16900 GWA-9D(40-41.5)2015015510 5/13/2015 7360 5.8 U 5.8 U 40.5 0.93 14.6 U 0.7 UJ 6.4 9.3 2.8 12200 GWA-9D(55-56.5)2015015507 5/13/2015 23900 6.3 U 4.6 J 101 2 15.8 UJ 0.76 UJ 28.1 16.7 70.3 55900 MW-22BR(7-8)2015018019 6/7/2015 17200 6.9 U 6.9 U 162 1.3 17.2 U 0.82 U 51.2 19.7 28.2 37700 MW-22BR(17-23)2015018017 6/7/2015 12800 7.7 U 7.7 U 128 0.8 19.2 U 0.92 U 30.7 11.9 19.2 24000 MW-22BR(27-29)2015018020 6/7/2015 5720 5.3 U 5.3 U 21 0.3 13.3 U 0.64 U 6.5 4.4 J 11.9 11000 MW-22BR(29-31)2015018018 6/7/2015 12100 6.7 U 6.7 U 60.5 0.66 16.7 U 0.8 U 16.6 11.8 18.1 21600 MW-23BR(1-2)2015014248 5/8/2015 28700 6.2 U 9.3 138 1.4 15.5 U 0.75 U 29.1 24.7 50.8 50500 MW-303BR(10-11.5)2015010601 4/8/2015 9410 6.7 U 39.9 303 1.5 16.8 U 0.81 U 13.4 49.6 31.8 16600 MW-303BR(80-81.5)2015010605 4/8/2015 18500 7 U 7 U 76.4 0.99 34.9 U 0.84 U 26.2 8.3 35.4 45900 MW-303BR(90-91.5)2015010606 4/8/2015 16800 3.1 UJ 16.2 117 2.4 J-31.3 U 0.75 UJ 27.2 10.6 J+33.7 25300 MW-310BR(10-11.5)2015013184 4/29/2015 13000 5.7 U 5.7 U 73.6 1.5 14.3 U 0.69 U 11.4 7.5 11.9 19400 MW-310BR(20-21.5)2015013185 4/29/2015 13900 7.8 U 59.6 397 3.7 27.6 0.94 U 23.5 10.7 62.6 8240 MW-310BR(25-26.5)2015013186 4/29/2015 17300 5.9 UJ 3.6 J-304 2.9 14.7 U 0.71 U 29.5 14.4 32.9 36400 MW-310BR(35-35.4)2015013187 4/29/2015 15900 5.5 U 5.5 U 210 1.6 13.8 U 0.66 U 23 26.3 24.1 29100 MW-311BR(44-46)2015018011 6/5/2015 12100 7.1 U 7.1 U 136 0.78 17.6 U 0.85 U 27.9 12.6 16.8 23700 MW-314BR(10-11.5)2015015511 5/13/2015 15300 8 U 8 U 108 1.6 20.1 U 0.96 UJ 18.9 9.2 18.2 29600 MW-314BR(40-41.5)2015015514 5/13/2015 17600 5.6 U 5.6 U 166 2.2 14 U 0.67 UJ 30.4 9.5 3.3 32400 MW-314BR(45.0-50.45)2015015515 5/13/2015 12100 6.8 U 6.8 U 49.6 0.66 17.1 U 0.82 UJ 13.9 7.6 15.6 25100 MW-315BR(24.0-25.5)2015013176 4/23/2015 18900 5.7 U 3.7 J 118 2.9 42.6 J 0.68 U 17.7 39.4 55.3 42300 MW-315BR(34.0-35.5)2015013178 4/23/2015 28400 6.2 U 6.2 U 169 4.2 50.6 J 0.75 U 26.5 30.4 31.8 53300 MW-317BR(5-7)2015013188 4/28/2015 20000 6.2 U 10.2 126 2.4 15.6 U 0.75 U 30.6 7.5 57.7 37600 MW-317BR(10-11)2015013189 4/28/2015 17400 5.5 U 4.1 J 59.9 1.9 13.8 U 0.66 U 15.7 7.5 54.3 18500 MW-317BR(15-16)2015013190 4/28/2015 18400 5.4 UJ 5.4 UJ 186 2.8 38.2 J-0.64 U 21.6 18.9 24.3 39300 J+ MW-318D(24-25)2015014239 5/5/2015 10600 6.9 U 6.9 U 75.9 1 17.2 U 0.82 U 17 7 5.2 18900 MW-318D(29-30)2015014240 5/5/2015 11600 5.2 U 5.2 U 77.5 1.2 13.1 U 0.63 U 11.3 10 13 24900 SB-1(1-2)2015014231 5/2/2015 22200 6.8 UJ 4 J-63.6 J+0.72 17 UJ 0.81 U 21.9 7 J+21.9 41800 SB-1(10-11.5)2015014232 5/2/2015 33200 5.6 U 4.6 J 59.6 3.9 14 U 0.67 U 32.7 18.9 44.6 95900 SB-1(15-16.5)2015014233 5/2/2015 23600 6 U 3.1 J 51.6 2.7 15.1 U 0.72 U 19.9 16.2 25.1 54700 SB-1(20-21.5)2015014234 5/2/2015 27600 5.9 U 5.3 J 74.8 2.2 14.8 U 0.71 U 28.5 14.6 47.9 54800 SB-1(25-26.5)2015014235 5/2/2015 18700 5.6 U 20 73.8 1.7 14.1 U 0.44 J 17 26.2 79.5 39300 SB-1(35-35.5)2015014238 5/6/2015 16600 5.5 U 5.5 U 67.4 1.5 13.8 U 0.66 U 15.4 12.5 65.4 28500 SB-2(1-2)2015012028 4/14/2015 14000 6.3 U 6.3 U 110 2 15.7 U 0.76 U 20.3 13 27.7 30300 SB-2(10-11.5)2015012019 4/15/2015 27700 5.8 U 5.8 U 110 2.1 14.5 U 0.69 U 30.9 12 57 49100 SB-2(20-21.5)2015012020 4/15/2015 24300 5.9 U 10.6 211 1.9 14.8 U 0.71 U 111 42.6 66.1 60300 SB-2(30-31.25)2015012022 4/15/2015 17400 5.9 U 9.2 71.3 1 14.7 U 0.71 U 34.7 20.1 68.4 42700 SB-2(35-36)2015012021 4/15/2015 19800 5.4 U 5.4 U 61.9 0.59 13.5 U 0.65 U 27.1 12 30.2 37100 SB-2(65-65.3)2015012023 4/15/2015 24600 6.1 U 8.6 74.4 0.86 15.2 U 0.73 U 36.1 21.8 57.8 49200 SB-3(1-2)2015012012 4/17/2015 14300 6.6 UJ 7 J 102 1.6 16.5 U 0.79 U 18 8.9 J-26.9 33600 Page 2 of 9 Table 8-5. Total Inorganic Results Soil Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater SB-3(10-11)2015012013 4/18/2015 15000 6.4 U 6.4 U 104 1.2 16 U 0.77 U 19.3 16.1 23.3 27700 SB-3(20-21.5)2015012014 4/18/2015 17700 5.8 U 5.8 U 63 1.5 14.5 U 0.7 U 17.7 7.5 23.4 28800 SB-3(35-36.5)2015013171 4/18/2015 12100 6.5 U 6.5 U 89.7 0.75 35.9 J 0.79 U 12.8 22.6 15.6 34400 SB-3(40-40.3)2015012015 4/18/2015 15600 7.2 U 7.2 U 63.1 1.5 17.9 U 0.86 U 19.1 12.8 64.3 26700 SB-3(45-45.2)2015012016 4/18/2015 17100 5.5 U 5.5 U 56.7 1 13.8 U 0.66 U 21.1 10.9 31 28700 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG.**Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. NS - No applicable standard for this parameter Page 3 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date AB-10D(10-11.5)2015015518 5/16/2015 AB-10D(45-46.5)2015015519 5/16/2015 AB-10D(60-60.7)2015015521 5/18/2015 AB-15D (26.0-26.5)92255787002 6/22/2015 AB-25BR(0-2)2015017070 5/28/2015 AB-25BR(45-46)2015017073 5/30/2015 AB-25BR(50-51)2015017074 5/30/2015 AB-30D(3-5)2015018005 6/2/2015 AB-30D(15-16.5)2015018006 6/2/2015 AB-30D(30-31.3)2015018007 6/2/2015 AB-30D(45-46.5)2015018008 6/2/2015 AB-35BR(25.0-26.5)2015020045 6/5/2015 AB-35BR(30.0-31.5)2015020046 6/5/2015 AS-10D(4-4.5)2015010607 4/10/2015 AS-10D(15-15.5)2015010608 4/10/2015 AS-12S(5-6.5)2015014245 5/8/2015 AS-12S(15-16.5)2015014246 5/8/2015 AS-12S(20-21.5)2015014247 5/8/2015 AS-2D(3-5)2015018001 5/20/2015 AS-2D(5-6.5)2015018002 5/29/2015 AS-2D(20-21.5)2015018003 5/30/2015 AS-2D(30-31.5)2015018004 5/30/2015 AS-4D(21-22.5)2015008620 3/24/2015 AS-6D(4-4.5)2015010610 4/13/2015 AS-6D(19.5-21)2015012017 4/15/2015 AS-6D(39.5-41)2015012018 4/15/2015 AS-8D(27-28.5)2015010596 4/8/2015 AS-8D(32-33.3)2015010597 4/8/2015 BG-1D(0-2)2015015888 5/19/2015 BG-5D(1-2)2015017061 5/27/2015 GWA-10D(9-10)2015014241 5/5/2015 GWA-10D(19-20)2015014242 5/5/2015 GWA-10D(25)2015014243 5/5/2015 GWA-10D(28-29)2015014244 5/5/2015 GWA-11D(10-11.5)2015008613 3/21/2015 GWA-11D(25-26.5)2015008614 3/21/2015 GWA-12D(10-11.5)2015013172 4/21/2015 GWA-12D(15-15.2)2015013183 4/21/2015 GWA-12D(20-21)2015013173 4/22/2015 GWA-12S(13-15)2015013174 4/22/2015 GWA-14S(4-6)92255774004 6/19/2015 GWA-15D(18.0-21.0)92255774005 6/18/2015 GWA-15D(18-21)92255774006 6/18/2015 GWA-1D(30-31.5)2015015493 5/7/2015 GWA-1D(40-40.5)2015015499 5/7/2015 GWA-1D(102-104)2015015503 5/12/2015 GWA-2D(19-20)2015015504 5/12/2015 GWA-2D(24-25)2015015505 5/12/2015 GWA-3D(5-6.5)2015010598 4/6/2015 GWA-3D(20-21.4)2015010599 4/7/2015 GWA-3D(25-25.9)2015010600 4/7/2015 Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater Lead Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium 7439-92-1 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 800 5200 8 1200 4400 1200 100000 2.4 1200 70000 NS 270 65 1 NS 130 2.1 NS 0.28 6 1200 NS 13 276 0.0074 J 2.9 U 17.3 4.3 U 23.3 5.8 U 19.6 54.9 715 8.5 890 0.026 3.1 U 16.8 4.6 U 27.4 6.2 U 61.8 48.8 1530 7.9 207 0.0088 U 2.8 U 9.2 4.2 U 9.8 5.7 U 8.1 28.3 933 9.4 36.9 0.1 3.5 U 6.1 7.1 U 38.5 7.1 U 55.4 12.6 1730 9.1 188 0.11 1.7 J 11.6 3.5 J 55.5 5.9 U 34.5 33.5 864 8 494 0.015 3.5 U 11.2 5.6 J 72.1 7 U 83.2 43.6 3500 6.3 J 332 0.026 3.6 U 8.9 6.7 J 61 7.2 U 83.2 37.9 7320 14.4 746 0.012 U 3.5 U 15.1 7 U 29.6 7 U 23.8 48.4 1900 11.8 361 0.01 J 3.8 U 10.6 7.7 U 14.5 7.7 U 33.7 29.4 788 14.7 120 0.078 3.2 U 9.4 6.5 U 10.7 6.5 U 125 23.6 776 5.4 U 76.3 0.0081 U 4.4 2.9 5.4 U 4 5.4 U 8.7 9 1480 10.2 413 0.0088 U 2.7 U 22.7 5.3 U 43.7 5.3 U 19.9 67.9 2710 21.5 338 0.0094 U 2.9 U 14.1 5.8 U 20.1 5.8 U 15.3 48.2 2090 21.2 333 0.23 3.7 U 20.8 3.7 U 16.7 3.7 U 33.4 58.2 647 7.7 1020 0.01 U 2.1 J 20.3 3.2 U 62.5 3.2 U 48.3 67.4 3410 13.8 273 0.0083 J 2.4 J 23.4 5.6 U 36.1 5.6 U 29.2 81.2 2160 21.5 479 0.02 4.9 39.4 5.3 U 69.6 5.3 U 32.6 86.9 5560 15.5 396 0.012 4.6 41.9 5.6 UJ 56.5 5.6 U 33.2 99.8 11200 17.8 646 0.0096 UJ 2.8 U 20.1 J+3.8 J-25.3 5.5 U 23.7 62.2 964 15.8 593 0.0096 U 2.9 U 18.2 3 J 25.7 5.8 U 21.2 57.3 1100 16.6 163 0.015 3 U 15.9 6 U 11.6 6 U 27.8 55.1 461 12.7 193 0.011 2.9 U 14.5 5.9 U 5.9 5.9 U 18.7 47.5 108 J 15.6 139 0.01 U 0.59 U 8.5 3 U 5.9 3 U 11.5 27.3 230 16.5 33.3 0.014 3 U 1.2 J 3 U 3 U 3 U 36.3 14.7 150 U 14.1 293 0.0075 J 2.9 U 13.9 5.9 U 2.9 U 5.9 U 35 57.9 147 U 13.4 606 0.014 5.7 21.4 6.5 U 26.3 6.5 U 29.2 74.8 1670 10.4 291 0.0099 U 3 U 8.9 5.9 U 19.8 5.9 U 15.2 26.3 1420 87 576 0.012 3.2 U 15.4 6.5 U 18 6.5 U 23.8 55.1 688 10.8 J+177 0.033 4 U 4.6 5.9 U 6.7 7.9 UJ 27.9 20.6 475 15.1 113 0.026 3.1 U 7.4 6.3 R 6.5 6.3 UJ 45.9 26.7 248 13.5 247 0.0096 U 2.9 U 19.4 5.7 U 7.7 5.7 U 26.6 67 185 14.1 376 0.0099 U 12.1 24.3 6 U 27.9 6 U 20.8 78.3 1120 15 373 0.0081 U 2.7 U 32.3 3 J 55 5.3 U 22.5 112 2100 18.3 449 0.0091 U 2.9 U 26.9 5.7 U 40.8 5.7 U 24.7 85.6 1520 19.2 233 0.0074 J 2.8 UJ 8.5 3.3 5 2.8 U 21.4 25.2 99.4 J 27.6 1330 0.01 U 2.8 U 31.6 3.4 J-50.2 2.8 U 22.7 111 1940 17.5 916 0.0092 UJ 3 U 48 3.9 J 75.3 6 U 75.7 136 4810 16.1 823 0.0092 UJ 2.2 J 39.7 5.7 U 70.5 5.7 U 65.1 106 5660 13 1120 0.0088 U 22.6 45.3 5.1 U 257 5.1 U 56.9 112 23900 21.5 698 0.009 J 5.6 41.9 7.6 U 72.5 7.6 U 67.2 119 4990 11.6 597 0.014 3.3 U 16.9 10.2 24.9 6.6 U 50.5 69.7 1560 7.6 373 0.014 3 U 12.5 5.9 U 12.6 5.9 U 45.9 42.5 1130 5.9 U 383 0.014 2.9 U 12.3 11.7 U 12.6 5.9 U 43.6 43.4 1150 15.9 652 J 0.01 U 3.2 U 15.5 2.7 J 3.2 U 6.5 U 29.5 70.4 162 U 29.5 835 0.0089 U 1.5 J 36.2 3.3 J 23 5.5 U 22.6 138 996 14.4 671 0.014 2.5 J 27.9 2.8 J 44.4 5.7 U 26.5 107 13100 13.5 468 0.006 J 2.9 U 29.9 3.2 J 19.5 5.8 U 30.2 139 908 15.5 465 0.0053 J 3 U 22.5 4.5 U 21.6 6 U 29 106 1260 20 83.7 0.0051 J 4.3 7.7 5.5 U 2.8 U 5.5 U 11.3 41 139 U 21.2 941 0.0066 J 1.8 J 22.8 6.2 U 30.3 6.2 U 30.6 93.4 1170 12.6 481 0.0091 U 2.9 U 24.7 5.8 U 24.1 5.8 U 24.9 55.9 851 Page 4 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater GWA-4D(28)2015015885 5/20/2015 GWA-4D(33)2015015886 5/20/2015 GWA-5BR(0-4.0)2015015522 5/18/2015 GWA-5BR(5-6.5)2015015523 5/19/2015 GWA-6S(9-11)2015020051 6/12/2015 GWA-6S(13.0-14.0)2015020050 6/12/2015 GWA-7S(16-17)2015017067 5/27/2015 GWA-7S(22-23)2015017069 5/27/2015 GWA-8D(5-10)2015013191 4/30/2015 GWA-8D(15-20)2015013192 4/30/2015 GWA-8D(20-22)2015013193 4/30/2015 GWA-9D(20-21.5)2015015508 5/13/2015 GWA-9D(30-31.5)2015015509 5/13/2015 GWA-9D(40-41.5)2015015510 5/13/2015 GWA-9D(55-56.5)2015015507 5/13/2015 MW-22BR(7-8)2015018019 6/7/2015 MW-22BR(17-23)2015018017 6/7/2015 MW-22BR(27-29)2015018020 6/7/2015 MW-22BR(29-31)2015018018 6/7/2015 MW-23BR(1-2)2015014248 5/8/2015 MW-303BR(10-11.5)2015010601 4/8/2015 MW-303BR(80-81.5)2015010605 4/8/2015 MW-303BR(90-91.5)2015010606 4/8/2015 MW-310BR(10-11.5)2015013184 4/29/2015 MW-310BR(20-21.5)2015013185 4/29/2015 MW-310BR(25-26.5)2015013186 4/29/2015 MW-310BR(35-35.4)2015013187 4/29/2015 MW-311BR(44-46)2015018011 6/5/2015 MW-314BR(10-11.5)2015015511 5/13/2015 MW-314BR(40-41.5)2015015514 5/13/2015 MW-314BR(45.0-50.45)2015015515 5/13/2015 MW-315BR(24.0-25.5)2015013176 4/23/2015 MW-315BR(34.0-35.5)2015013178 4/23/2015 MW-317BR(5-7)2015013188 4/28/2015 MW-317BR(10-11)2015013189 4/28/2015 MW-317BR(15-16)2015013190 4/28/2015 MW-318D(24-25)2015014239 5/5/2015 MW-318D(29-30)2015014240 5/5/2015 SB-1(1-2)2015014231 5/2/2015 SB-1(10-11.5)2015014232 5/2/2015 SB-1(15-16.5)2015014233 5/2/2015 SB-1(20-21.5)2015014234 5/2/2015 SB-1(25-26.5)2015014235 5/2/2015 SB-1(35-35.5)2015014238 5/6/2015 SB-2(1-2)2015012028 4/14/2015 SB-2(10-11.5)2015012019 4/15/2015 SB-2(20-21.5)2015012020 4/15/2015 SB-2(30-31.25)2015012022 4/15/2015 SB-2(35-36)2015012021 4/15/2015 SB-2(65-65.3)2015012023 4/15/2015 SB-3(1-2)2015012012 4/17/2015 Lead Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium 7439-92-1 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 800 5200 8 1200 4400 1200 100000 2.4 1200 70000 NS 270 65 1 NS 130 2.1 NS 0.28 6 1200 NS 13.5 288 0.0048 J 2.9 U 14 4.3 U 23.2 5.7 U 16.1 43.7 1290 16.1 436 0.0089 U 2.8 U 15.3 3 J 31.9 5.5 U 20.1 56.1 1780 18.1 893 0.036 3 U 14.9 4.6 U 9.4 6.1 U 73.9 48.9 690 13.3 744 0.03 3.3 U 13.2 5 U 9.6 6.7 U 60.5 45.1 668 3.8 J 97.9 0.0072 J 3.1 U 3.2 6.1 U 3.6 6.1 U 12.1 11.9 298 7.9 237 0.018 3.2 U 11 6.5 U 21 6.5 U 52.4 34.3 1380 16.2 659 0.0074 J 2.8 U 12 5.6 U 21.2 5.6 U 28.1 37.8 994 20.2 567 0.009 U 2.8 U 23.6 6.1 32.8 5.7 U 22.8 74.2 1230 11.7 122 0.0084 U 2.6 U 10.6 5.2 U 4.6 5.2 U 35.8 31.2 173 J+ 15.1 938 0.0087 U 2.8 U 22.3 5.6 U 39.1 5.6 U 39 62.9 2580 14.9 326 0.0087 U 2.6 U 29.6 5.2 U 44.8 5.2 U 50.2 84.5 2750 11.6 267 0.0094 1.6 J 6.7 4 U 2.3 J 5.4 U 15.5 23.5 77.4 J+ 14 275 0.0068 J 3 U 12.5 4.5 U 5.6 6 U 14.9 57 109 J+ 18.2 328 0.0091 U 2.9 U 7 4.4 U 9 5.8 U 8.4 26 289 8.2 5170 0.011 3.2 U 45.8 7.8 144 6.3 U 18.7 203 39100 11.8 693 0.027 3.4 U 28.7 6.9 U 25.8 6.9 U 72.4 63.7 3050 12.1 359 0.043 3.8 U 12.1 7.7 U 9.8 7.7 U 57.2 46.9 915 6.2 310 0.0084 U 2.7 U 6.9 5.3 U 7 5.3 U 6 23.1 1380 13.5 968 0.011 U 3.3 U 16.2 6.7 U 13.7 6.7 U 18.4 50.5 2540 20.1 1050 0.038 3.1 U 26.3 6.2 U 17.2 6.2 U 51.4 83.1 1120 15.5 526 0.073 3.4 U 17 6.7 U 87 6.7 U 34.2 41.4 2360 14.8 104 0.023 0.7 U 11.3 7 U 9.3 7 U 45.8 43.4 285 27.1 133 0.035 6.3 UJ 23 J+6.7 J-43.2 J-3.1 U 25.9 87.4 9540 J 19 225 0.0058 J 2.9 U 10 5.7 UJ 7.7 5.7 U 18.8 27.6 261 J+ 24 104 0.11 3.9 U 26.7 7.8 U 205 7.8 U 62.7 36.3 5060 23.3 260 0.0095 U 2.9 UJ 26.3 4.9 J-31.6 J-5.9 U 35.5 90.9 1940 20.6 1010 0.0092 U 2.8 U 23 5.5 U 31.9 5.5 U 31.6 70 2950 6.7 J 543 0.018 3.5 U 14.1 7.1 U 11.5 7.1 U 48.6 45.7 1420 16.3 309 0.009 J 4 U 10.5 6 U 14.7 8 U 30.3 37.5 414 19.7 215 0.0089 U 2.8 U 24.6 2.8 J 36.8 5.6 U 21.8 95 2630 18.1 601 0.0098 U 3.4 U 14.6 5.1 U 29.7 6.8 U 9.1 48.8 2530 30 1600 0.0097 U 2.8 U 33.9 4.9 J 6.5 5.7 U 32.2 107 224 29.8 1530 0.0097 U 3.1 U 44.6 6.2 U 11.5 6.2 U 37.5 159 548 23.8 159 0.021 3.1 U 15.7 6.2 U 50.9 6.2 U 40.6 61.9 2340 18.2 69 0.0094 U 2.8 U 20.6 5.3 J 2.8 U 5.5 U 21.5 62.6 83.9 J+ 47.1 661 0.0082 U 2.7 U 33.4 4.3 J-27.4 5.4 U 32.9 100 1110 9.1 429 0.012 U 3.4 U 11.7 6.9 U 53.3 6.9 U 24.7 36.4 1390 18.5 470 0.0084 U 2.6 U 17.2 5.2 U 55.8 5.2 U 18.1 54.4 1410 13.9 J-113 0.047 3.4 U 9 6.8 UJ 8.6 6.8 U 39.9 40.1 172 25.9 418 0.0069 J 2.8 U 52.2 5.6 U 1.9 J 5.6 U 49.5 178 140 U 18.4 202 0.0052 J 3 U 27.5 6 U 3.2 6 U 38.7 107 151 U 14.9 145 0.04 3 UJ 17.1 5.9 U 21.8 5.9 U 54.4 70.5 269 31.3 328 0.038 7.4 38.9 5.6 U 78 5.6 U 19.1 178 9480 13.8 304 0.0047 J 2.8 U 28.8 5.5 U 12.1 5.5 U 16 72.6 1020 12.3 233 0.0092 UJ 3.1 U 12.6 6.3 U 10.3 6.3 U 21.3 51.1 429 21.5 256 0.012 2.9 U 19.1 5.8 U 4.4 5.8 U 41.4 83.5 145 U 18.9 1150 0.024 5.4 36.3 5.9 U 73.9 5.9 U 33.8 104 1930 18.2 395 0.0086 J 3.2 32.4 5.9 U 36.4 5.9 U 24.2 113 4160 11.4 837 0.0073 J 1.9 J 19.4 5.4 U 52.8 5.4 U 26.2 74.1 9850 16.5 433 0.011 1.6 J 31.9 6.1 U 60.7 6.1 U 34.1 91.4 10200 21.9 200 0.017 3.3 UJ 9 6.6 U 7.1 6.6 U 37.3 58.2 680 Page 5 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater SB-3(10-11)2015012013 4/18/2015 SB-3(20-21.5)2015012014 4/18/2015 SB-3(35-36.5)2015013171 4/18/2015 SB-3(40-40.3)2015012015 4/18/2015 SB-3(45-45.2)2015012016 4/18/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG.**Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. NS - No applicable standard for this parameter Lead Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium 7439-92-1 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 800 5200 8 1200 4400 1200 100000 2.4 1200 70000 NS 270 65 1 NS 130 2.1 NS 0.28 6 1200 NS 23 601 0.03 3.2 U 12 6.4 U 13 6.4 U 35 46.5 1480 17.8 82.7 0.0052 J 2.9 U 16.9 5.8 U 2.5 J 5.8 U 34.3 61.1 433 22.9 2840 0.011 U 3.3 U 21.9 6.5 U 24.2 6.5 U 21.5 47.8 2010 13 289 0.0077 J 3.6 U 24.4 7.2 U 19.3 7.2 U 27 189 3110 10.3 274 0.0093 U 2.8 U 23.4 5.5 U 17.1 5.5 U 28.6 83.8 2740 Page 6 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date AB-10D(10-11.5)2015015518 5/16/2015 AB-10D(45-46.5)2015015519 5/16/2015 AB-10D(60-60.7)2015015521 5/18/2015 AB-15D (26.0-26.5)92255787002 6/22/2015 AB-25BR(0-2)2015017070 5/28/2015 AB-25BR(45-46)2015017073 5/30/2015 AB-25BR(50-51)2015017074 5/30/2015 AB-30D(3-5)2015018005 6/2/2015 AB-30D(15-16.5)2015018006 6/2/2015 AB-30D(30-31.3)2015018007 6/2/2015 AB-30D(45-46.5)2015018008 6/2/2015 AB-35BR(25.0-26.5)2015020045 6/5/2015 AB-35BR(30.0-31.5)2015020046 6/5/2015 AS-10D(4-4.5)2015010607 4/10/2015 AS-10D(15-15.5)2015010608 4/10/2015 AS-12S(5-6.5)2015014245 5/8/2015 AS-12S(15-16.5)2015014246 5/8/2015 AS-12S(20-21.5)2015014247 5/8/2015 AS-2D(3-5)2015018001 5/20/2015 AS-2D(5-6.5)2015018002 5/29/2015 AS-2D(20-21.5)2015018003 5/30/2015 AS-2D(30-31.5)2015018004 5/30/2015 AS-4D(21-22.5)2015008620 3/24/2015 AS-6D(4-4.5)2015010610 4/13/2015 AS-6D(19.5-21)2015012017 4/15/2015 AS-6D(39.5-41)2015012018 4/15/2015 AS-8D(27-28.5)2015010596 4/8/2015 AS-8D(32-33.3)2015010597 4/8/2015 BG-1D(0-2)2015015888 5/19/2015 BG-5D(1-2)2015017061 5/27/2015 GWA-10D(9-10)2015014241 5/5/2015 GWA-10D(19-20)2015014242 5/5/2015 GWA-10D(25)2015014243 5/5/2015 GWA-10D(28-29)2015014244 5/5/2015 GWA-11D(10-11.5)2015008613 3/21/2015 GWA-11D(25-26.5)2015008614 3/21/2015 GWA-12D(10-11.5)2015013172 4/21/2015 GWA-12D(15-15.2)2015013183 4/21/2015 GWA-12D(20-21)2015013173 4/22/2015 GWA-12S(13-15)2015013174 4/22/2015 GWA-14S(4-6)92255774004 6/19/2015 GWA-15D(18.0-21.0)92255774005 6/18/2015 GWA-15D(18-21)92255774006 6/18/2015 GWA-1D(30-31.5)2015015493 5/7/2015 GWA-1D(40-40.5)2015015499 5/7/2015 GWA-1D(102-104)2015015503 5/12/2015 GWA-2D(19-20)2015015504 5/12/2015 GWA-2D(24-25)2015015505 5/12/2015 GWA-3D(5-6.5)2015010598 4/6/2015 GWA-3D(20-21.4)2015010599 4/7/2015 GWA-3D(25-25.9)2015010600 4/7/2015 Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater Chloride Magnesium Nitrate Potassium Sodium Sulfate pH (field)Total Organic Carbon 16887-00-6 7439-95-4 14797-55-8 7440-09-7 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg Std. Units mg/kg NS NS 100000 NS NS NS NS NS NS NS NS NS NS NS NS NS 274 U 3330 27.4 UJ 1200 290 U 274 U 5.4 J 551 J 300 U 3990 30 UJ 1960 308 U 300 U 6.8 J 6190 279 U 2720 27.9 UJ 855 283 U 279 U 6.8 J 2130 338 U 909 33.8 UJ 344 J 355 U 338 U 6.4 J NA NA 2300 29.8 UJ 2560 293 U NA 6 J 33600 352 U 4000 35.2 UJ 2760 351 U 352 U 8.4 J 1930 346 U 2900 34.6 UJ 2030 359 U 346 U 8.1 J 2070 341 U 2740 34.1 UJ 851 352 U 341 U 5.6 J 427 J 359 U 2330 35.9 UJ 1010 384 U 359 U 5.8 J 730 J 318 U 988 31.8 UJ 566 323 U 318 U 5.7 J 2020 249 U 370 24.9 UJ 137 J 268 U 249 U 7.5 J 368 J 274 U 5270 27.4 UJ 1920 266 U 274 U 4.7 J NA 280 U 4830 28 UJ 999 291 U 280 U 5.8 J NA 380 U 3840 38 UJ 712 371 U 380 U 4.6 J 14600 326 U 7320 32.6 UJ 1040 315 U 326 U 6.6 J 1400 267 U 4790 26.7 UJ 656 476 267 U 6.9 J 1220 257 U 6250 25.7 UJ 813 265 U 257 U 6.6 J 4350 J 275 U 9550 27.5 UJ 1280 280 U 141 J 6.5 J 16100 283 U 3530 28.3 UJ 841 277 U 283 U 5.4 J 468 J 290 U 3480 29 UJ 1030 291 U 290 U 5.6 J 531 J 312 U 2890 31.2 UJ 639 300 U 312 U 5.2 J 1430 303 U 2850 30.3 UJ 733 293 U 303 U 5.6 J 705 J 296 U 1970 29.6 UJ 89.8 65.6 296 U 5.1 J 2730 306 U 305 30.6 UJ 203 J 300 U 306 U 4.7 J 1050 283 U 2420 28.3 UJ 307 295 U 283 U 6.3 J 524 J 329 U 5640 32.9 UJ 1370 324 U 329 U 6 J 2230 305 U 1450 30.5 UJ 190 J 296 U 305 U 7 J 942 324 U 2540 32.4 UJ 418 60.6 J 324 U 5.4 J 929 367 U 1290 J+36.7 UJ 486 395 U 367 U 5.2 J 7020 325 U 1110 32.5 UJ 684 314 U 325 U 5.1 J 1560 287 U 3300 28.7 UJ 1950 286 U 287 U 5.5 J 509 J 293 U 3730 29.3 UJ 1270 302 U 293 U 6 J 521 J 257 U 5880 25.7 UJ 1560 266 U 257 U 6.2 J 451 J 280 U 4020 28 UJ 2010 286 U 280 U 6.2 J 409 J 291 U 2080 29.1 UJ 184 J 277 U 291 U 5 J 801 277 U 4530 27.7 UJ 738 278 U 277 U 5.8 J 803 303 U 17900 30.3 UJ 1920 185 J+303 U 5.6 J 746 290 U 12600 29 UJ 1740 172 J+290 U 7.9 J 1650 J 258 U 19400 25.8 UJ 1810 205 J+258 U 7.7 J 3650 372 U 13900 37.2 UJ 1800 378 U 372 U 6.3 J 1530 325 U 4120 32.5 UJ 2190 332 U 325 U 5.6 J NA 300 U 3340 30 UJ 953 297 U 300 U 6.7 J NA 294 U 3320 29.4 UJ 963 294 U 294 U 6.3 J NA 320 UJ 2190 32 UJ 250 J 324 U 320 UJ 5.3 J 782 U 271 U 3640 27.1 UJ 917 274 U 271 U 5.8 J 497 J 294 U 10400 29.4 UJ 1390 283 U 294 U 7.9 J 15700 277 U 4520 27.7 UJ 1790 288 U 277 U 6.7 J 556 J 285 U 4430 28.5 UJ 1640 298 U 285 U 6.5 J 409 J 284 U 429 28.4 UJ 353 277 U 284 U 5.5 J 543 J 298 U 3160 29.8 UJ 300 J 310 U 298 U 6.2 J 585 J 283 U 3240 28.3 UJ 152 46.4 J 283 U 6.3 J 504 J Page 7 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater GWA-4D(28)2015015885 5/20/2015 GWA-4D(33)2015015886 5/20/2015 GWA-5BR(0-4.0)2015015522 5/18/2015 GWA-5BR(5-6.5)2015015523 5/19/2015 GWA-6S(9-11)2015020051 6/12/2015 GWA-6S(13.0-14.0)2015020050 6/12/2015 GWA-7S(16-17)2015017067 5/27/2015 GWA-7S(22-23)2015017069 5/27/2015 GWA-8D(5-10)2015013191 4/30/2015 GWA-8D(15-20)2015013192 4/30/2015 GWA-8D(20-22)2015013193 4/30/2015 GWA-9D(20-21.5)2015015508 5/13/2015 GWA-9D(30-31.5)2015015509 5/13/2015 GWA-9D(40-41.5)2015015510 5/13/2015 GWA-9D(55-56.5)2015015507 5/13/2015 MW-22BR(7-8)2015018019 6/7/2015 MW-22BR(17-23)2015018017 6/7/2015 MW-22BR(27-29)2015018020 6/7/2015 MW-22BR(29-31)2015018018 6/7/2015 MW-23BR(1-2)2015014248 5/8/2015 MW-303BR(10-11.5)2015010601 4/8/2015 MW-303BR(80-81.5)2015010605 4/8/2015 MW-303BR(90-91.5)2015010606 4/8/2015 MW-310BR(10-11.5)2015013184 4/29/2015 MW-310BR(20-21.5)2015013185 4/29/2015 MW-310BR(25-26.5)2015013186 4/29/2015 MW-310BR(35-35.4)2015013187 4/29/2015 MW-311BR(44-46)2015018011 6/5/2015 MW-314BR(10-11.5)2015015511 5/13/2015 MW-314BR(40-41.5)2015015514 5/13/2015 MW-314BR(45.0-50.45)2015015515 5/13/2015 MW-315BR(24.0-25.5)2015013176 4/23/2015 MW-315BR(34.0-35.5)2015013178 4/23/2015 MW-317BR(5-7)2015013188 4/28/2015 MW-317BR(10-11)2015013189 4/28/2015 MW-317BR(15-16)2015013190 4/28/2015 MW-318D(24-25)2015014239 5/5/2015 MW-318D(29-30)2015014240 5/5/2015 SB-1(1-2)2015014231 5/2/2015 SB-1(10-11.5)2015014232 5/2/2015 SB-1(15-16.5)2015014233 5/2/2015 SB-1(20-21.5)2015014234 5/2/2015 SB-1(25-26.5)2015014235 5/2/2015 SB-1(35-35.5)2015014238 5/6/2015 SB-2(1-2)2015012028 4/14/2015 SB-2(10-11.5)2015012019 4/15/2015 SB-2(20-21.5)2015012020 4/15/2015 SB-2(30-31.25)2015012022 4/15/2015 SB-2(35-36)2015012021 4/15/2015 SB-2(65-65.3)2015012023 4/15/2015 SB-3(1-2)2015012012 4/17/2015 Chloride Magnesium Nitrate Potassium Sodium Sulfate pH (field)Total Organic Carbon 16887-00-6 7439-95-4 14797-55-8 7440-09-7 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg Std. Units mg/kg NS NS 100000 NS NS NS NS NS NS NS NS NS NS NS NS NS 272 U 2580 27.2 UJ 2050 286 U 272 U 5.3 J 829 J 275 U 3720 27.5 UJ 2240 276 U 275 U 5.9 J 472 J 298 U 3390 29.8 UJ 1040 304 U 151 J 5.3 J 3140 347 U 3140 34.7 UJ 1200 334 U 347 U 5.4 J 3460 304 U 987 30.4 UJ 745 307 U 254 J 5 J NA 329 U 3320 32.9 UJ 1960 325 U 329 U 7.2 J NA 285 U 3470 28.5 UJ 834 280 U 249 J 5 J 1170 298 U 4650 29.8 UJ 1680 283 U 298 U 5.6 J 702 U 268 U 2090 26.8 UJ 401 262 U 268 U 7.3 J 417 J 273 U 6580 27.3 UJ 931 217 J+273 U 7.6 J 487 J 256 U 10000 25.6 UJ 3250 274 256 U 7.8 J 1240 276 U 930 27.6 UJ 579 269 U 276 U 5.2 J 490 J 300 U 1700 30 UJ 329 298 U 300 U 5.6 J 570 J 294 U 924 29.4 UJ 214 J 292 U 294 U 6 J 457 J 323 U 10700 32.3 UJ 1700 315 U 323 U 7.4 J 23800 336 U 5540 33.6 UJ 2060 343 U 336 U 6.6 J 2300 363 U 3570 36.3 UJ 2280 384 U 363 U 6.7 J 7780 277 U 2880 27.7 UJ 564 266 U 277 U 8.1 J 484 J 339 U 6450 33.9 UJ 1380 334 U 339 U 7.9 J 630 J 306 U 7330 30.6 UJ 1160 310 U 306 U 5.5 J 6960 320 U 3010 32 UJ 1140 336 U 182 J 5.8 J 36100 J 332 U 3720 33.2 UJ 1770 35.1 J 332 U 5 J 4910 308 U 5890 30.8 UJ 1850 626 U 308 U 5.4 J 3520 291 U 2050 29.1 UJ 533 286 U 291 U 4.8 J 1580 NA 1450 36.5 UJ 1940 516 NA 7.8 J 89900 280 U 4630 28 UJ 2330 J-295 U 280 U 8.1 J 568 J 270 U 5450 27 UJ 2550 275 U 270 U 7.6 J 3540 342 U 4290 34.2 UJ 1710 353 U 342 U 7.3 J 2090 398 U 2530 39.8 UJ 839 401 U 398 U 5.4 J 981 275 U 7370 27.5 UJ 3780 280 U 275 U 6.4 J 378 J 321 U 5390 32.1 UJ 797 341 U 321 U 6.6 J 787 296 U 5240 29.6 UJ 249 J 285 U 296 U 5 J 1730 289 U 8020 28.9 UJ 492 311 U 147 J 4.7 J 527 J NA 3590 31.2 UJ 2060 312 U NA 7.4 J 18900 291 U 2080 29.1 UJ 1050 276 U 349 3.8 J 657 J 265 UJ 4630 26.5 UJ 936 155 J+265 U 6.2 J 418 J 362 U 3440 36.2 UJ 200 J 344 U 362 U 7.1 J 871 U 270 U 4000 27 UJ 418 262 U 270 U 6.8 J 324 J 338 U 1560 J+33.8 UJ 635 339 U 338 U 4.6 J 20400 267 U 6110 26.7 UJ 168 J 280 U 267 U 4.9 J 1080 287 U 4050 28.7 UJ 247 J 301 U 287 U 5.3 J 1280 285 U 4050 28.5 UJ 605 297 U 285 U 5.4 J 12300 293 UJ 4690 29.3 UJ 1340 282 U 243 J-4.5 J 13500 168 J 5790 26.8 UJ 1190 275 U 268 U 5.5 J 4420 300 U 2360 30 UJ 1280 315 U 300 U 7.2 J 637 J 284 U 4490 28.4 UJ 2730 289 U 284 U 5.5 J 718 289 U 4790 28.9 UJ 2100 297 U 289 U 5.3 J 7430 285 U 8470 28.5 UJ 2200 295 U 145 J 6.5 J 14500 279 U 10800 27.9 UJ 1800 269 U 279 U 8.6 J 3680 291 U 12700 29.1 UJ 1970 160 J 291 U 8.6 J 20100 322 U 1830 J-32.2 UJ 1390 329 U 504 4.2 J 1570 Page 8 of 9 Table 8-5. Total Inorganic Results Soil Sample Name Sample ID Sample Date Analyte CAS RN Result Unit NC PSRG Industrial Health NC PSRG Protection of Groundwater SB-3(10-11)2015012013 4/18/2015 SB-3(20-21.5)2015012014 4/18/2015 SB-3(35-36.5)2015013171 4/18/2015 SB-3(40-40.3)2015012015 4/18/2015 SB-3(45-45.2)2015012016 4/18/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units Comparison Criteria: Shading indicates exceedance of either applicable criteria. Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. bold - indicates exceedance of NCDENR Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG.**Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. NS - No applicable standard for this parameter Chloride Magnesium Nitrate Potassium Sodium Sulfate pH (field)Total Organic Carbon 16887-00-6 7439-95-4 14797-55-8 7440-09-7 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg Std. Units mg/kg NS NS 100000 NS NS NS NS NS NS NS NS NS NS NS NS NS 322 U 3060 32.2 UJ 1700 320 U 322 U 5 J 6120 J+ 280 U 2330 28 UJ 308 290 U 280 U 6 J 583 J 339 U 2430 33.9 UJ 313 J 327 U 339 U 7.1 J 862 345 U 5090 34.5 UJ 1080 358 U 345 U 7.6 J 2880 279 U 5860 27.9 UJ 958 275 U 179 J 8.4 J 1720 Page 9 of 9 Table 8-6. Total Inorganic Results PWR and Bedrock Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead 7429-90-5 7440-36-0 7440-38-2 7440-39-3 7440-41-7 7440-42-8 7440-43-9 7440-47-3 7440-48-4 7440-50-8 7439-89-6 7439-92-1 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 100000 94 3 44000 460 46000 200 100000 70 9400 100000 800 NS 0.9 5.8 580 63 45 3 360000 0.9 700 150 270 Matrix Sample Name Sample ID Sample Date PWR AB-5D(27-27.33)2015018014 6/2/2015 12000 5.8 U 6.6 135 0.88 14.5 U 0.7 U 19.9 8.8 23.3 26100 10.7 PWR AB-5D(29.5-29.7)2015018015 6/2/2015 11600 5.8 U 7.4 211 0.96 14.4 U 0.69 U 20.2 7.4 16.9 26400 8.9 PWR AS-10D(30-30.3)2015010609 4/10/2015 9290 2.7 U 9.4 32.6 0.53 13.4 U 0.32 U 12.6 12.4 47.4 22800 13.3 PWR BG-5D(10-12)2015017062 5/27/2015 10100 5.8 U 5.8 U 151 1.1 14.5 U 0.7 U 14 17.6 40.6 23900 21.5 PWR BG-5D(13-15)2015017066 5/27/2015 11600 5.4 U 4.6 J 91.1 1.4 13.5 U 0.65 U 16.4 10.7 16.9 27200 19.9 PWR BG-5D(17-19)2015017063 5/27/2015 8570 5.7 U 5.7 U 46.2 0.54 14.1 U 0.68 U 10.3 10.1 17.1 18400 14 PWR BG-5D(19-21)2015017065 5/27/2015 8430 7.1 U 7.1 U 88.6 0.49 17.8 U 0.86 U 12.7 13.3 15.8 15700 16.2 PWR BG-5D(21-23)2015017064 5/27/2015 17200 6.1 U 6.1 U 90.3 0.69 15.2 U 0.73 U 22.5 15.7 23 30200 6.4 PWR GWA-2D(49-50)2015015506 5/12/2015 20000 5.4 U 17.3 69.1 1.4 13.5 U 0.65 UJ 24.9 16.7 43.8 40200 16.7 PWR GWA-3D(29-29.83)2015020056 6/11/2015 7900 5.5 U 4.2 J 39.3 0.73 13.6 U 0.66 U 13.6 18.8 20.3 19500 35.4 PWR GWA-4D(38)2015015887 5/20/2015 14200 5 U 5 U 72.8 0.8 12.6 U 0.6 U 19.1 9.9 35.3 27300 30 PWR GWA-7S(34-35)2015017068 5/28/2015 12300 6 U 6 U 39.1 1.1 15 U 0.72 U 21.8 14 34.6 26500 15.4 PWR MW-301BR(5-7)2015009425 4/1/2015 17800 3.1 U 12.3 138 1.2 39 0.37 U 37.8 15 38.5 37300 17.9 PWR MW-301BR(15-16)2015009426 4/1/2015 18700 5.3 U 4.3 J 153 0.67 34.4 0.64 U 27.5 13.6 36.7 30600 9.5 PWR MW-301BR(30-31)2015009427 4/1/2015 28600 3.5 U 24.9 810 J 2 J-44.2 0.42 U 29.2 36.5 69.8 43900 19.6 PWR MW-308BR(20-21)2015013197 5/1/2015 14700 6.4 U 16.6 157 0.76 16 U 0.77 U 21.9 5 J 22.7 21400 11.3 PWR MW-308BR(25-26)2015013196 5/1/2015 18900 6 U 6 U 115 1.7 34.1 J 0.72 U 21.8 13.6 45.1 32700 21.8 PWR MW-314BR(57-58)2015020055 6/11/2015 9910 5.2 U 5.2 U 63.3 1 13.1 U 0.63 U 13.4 11.7 10.8 28100 30.4 Rock AS-6D(48-48.25)2015020052 6/11/2015 7950 6 U 9.8 10.1 1 7.6 J 0.72 U 11.7 6 U 47.6 40100 4.4 J Rock GWA-10D(31.8-32.8)2015020057 6/11/2015 4620 5.4 U 5.4 U 52.1 1.4 13.5 U 0.38 J 8.2 6 13.5 23700 4.6 J Rock GWA-8D(27.4-28.4)2015020058 6/11/2015 11500 5.3 U 5.3 UJ 35.7 0.82 13.4 U 0.64 U 19.5 10.1 54 18800 10.7 Rock MW-23BR(10-12)2015014249 5/9/2015 15100 5.3 U 9.7 177 0.66 13.4 U 0.64 U 16.6 16.2 53 35600 16.2 Rock MW-318D(42.5-43.42)2015020059 6/11/2015 2420 6.3 U 6.3 U 14.9 0.24 J 15.8 U 0.76 U 2.4 5.4 J 1.5 J 5130 8.2 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Shading indicates exceedance of either applicable criteria. bold - indicates exceedance of NC Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Page 1 of 3 Table 8-6. Total Inorganic Results PWR and Bedrock Matrix Sample Name Sample ID Sample Date PWR AB-5D(27-27.33)2015018014 6/2/2015 PWR AB-5D(29.5-29.7)2015018015 6/2/2015 PWR AS-10D(30-30.3)2015010609 4/10/2015 PWR BG-5D(10-12)2015017062 5/27/2015 PWR BG-5D(13-15)2015017066 5/27/2015 PWR BG-5D(17-19)2015017063 5/27/2015 PWR BG-5D(19-21)2015017065 5/27/2015 PWR BG-5D(21-23)2015017064 5/27/2015 PWR GWA-2D(49-50)2015015506 5/12/2015 PWR GWA-3D(29-29.83)2015020056 6/11/2015 PWR GWA-4D(38)2015015887 5/20/2015 PWR GWA-7S(34-35)2015017068 5/28/2015 PWR MW-301BR(5-7)2015009425 4/1/2015 PWR MW-301BR(15-16)2015009426 4/1/2015 PWR MW-301BR(30-31)2015009427 4/1/2015 PWR MW-308BR(20-21)2015013197 5/1/2015 PWR MW-308BR(25-26)2015013196 5/1/2015 PWR MW-314BR(57-58)2015020055 6/11/2015 Rock AS-6D(48-48.25)2015020052 6/11/2015 Rock GWA-10D(31.8-32.8)2015020057 6/11/2015 Rock GWA-8D(27.4-28.4)2015020058 6/11/2015 Rock MW-23BR(10-12)2015014249 5/9/2015 Rock MW-318D(42.5-43.42)2015020059 6/11/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Shading indicates exceedance of either applicable criteria. bold - indicates exceedance of NC Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium Vanadium Zinc Calcium Chloride Magnesium 7439-96-5 7439-97-6 7439-98-7 7440-02-0 7782-49-2 7440-24-6 7440-28-0 7440-62-2 7440-66-6 7440-70-2 16887-00-6 7439-95-4 mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg 5200 8 1200 4400 1200 100000 2.4 1200 70000 NS NS NS 65 1 NS 130 2.1 NS 0.28 6 1200 NS NS NS 240 0.011 2.9 U 20.2 5.8 U 34 5.8 U 26.2 66.9 1390 299 U 5010 216 0.0062 J 5.2 18.8 3.9 J 71.3 5.8 U 21.5 58.1 2670 292 U 4520 479 0.0076 J 2.7 U 15.9 1.7 J 183 2.7 U 18.3 89.1 19900 257 U 7190 982 0.009 U 2.9 U 13 3.1 J 20.6 5.8 U 25.1 47.1 1160 287 U 2350 323 0.0088 U 2.7 U 15.6 7.3 29.3 5.4 U 21.8 65.4 2400 278 U 3300 585 0.0093 U 2.8 U 14.3 5.7 U 26.1 5.7 U 20.5 47.3 2600 282 U 2890 925 0.011 U 3.6 U 11.1 7.1 U 20.9 7.1 U 20.3 42.7 2270 345 U 3180 655 0.0098 U 3 U 22.6 6.1 U 27 6.1 U 24.8 79.7 2330 293 U 7580 487 0.0089 UJ 2.7 U 23.1 2.7 J 30.1 5.4 U 22.2 90.7 3790 274 U 5450 282 0.0073 J 2.7 U 11.8 5.5 U 40.9 5.5 U 26.1 42.3 1370 271 U 3240 563 0.0084 U 2.5 U 17.6 3.8 UJ 20.7 5 U 16.4 59.2 1410 263 U 7300 500 0.0095 U 3 U 18.8 6 U 47.5 6 U 22.9 65 2340 290 U 4710 467 0.03 3.8 17.8 3.1 U 30.2 3.1 U 39.4 71.4 J+1270 293 U 3430 931 0.0082 J 2.7 UJ 25.3 5.3 U 84.7 5.3 U 36.7 77.6 J 4780 279 U 9270 946 0.019 J-2.2 J 36.7 J-3.5 UJ 267 3.5 U 34.7 123 J-2940 J+354 U 7890 191 0.027 3.2 U 13.5 6.4 U 46.9 6.4 U 33.3 37.9 2410 321 U 2840 1290 0.0092 U 3 U 29.8 6 U 45 6 U 24.5 94.9 2170 293 U 5880 197 0.0085 U 2.6 U 20.8 3.5 J 16.5 5.2 U 18.3 58.5 2320 265 U 3320 42.6 0.0097 U 3 U 9.3 3.8 J 11 6 U 26.5 19.6 2230 302 U 3190 579 0.0085 U 2.7 U 11.8 5.4 U 24.5 5.4 U 6.7 35.1 968 257 U 1890 278 0.0085 U 2.7 U 22.5 5.3 U 41.1 5.3 U 22.8 100 15900 264 U 6530 1180 0.009 3.7 26.6 5.3 U 280 5.3 U 19.2 113 52500 256 U 9160 210 0.011 U 3.2 U 5.1 6.3 U 11.1 6.3 U 3.9 J 17.3 337 313 U 915 Page 2 of 3 Table 8-6. Total Inorganic Results PWR and Bedrock Matrix Sample Name Sample ID Sample Date PWR AB-5D(27-27.33)2015018014 6/2/2015 PWR AB-5D(29.5-29.7)2015018015 6/2/2015 PWR AS-10D(30-30.3)2015010609 4/10/2015 PWR BG-5D(10-12)2015017062 5/27/2015 PWR BG-5D(13-15)2015017066 5/27/2015 PWR BG-5D(17-19)2015017063 5/27/2015 PWR BG-5D(19-21)2015017065 5/27/2015 PWR BG-5D(21-23)2015017064 5/27/2015 PWR GWA-2D(49-50)2015015506 5/12/2015 PWR GWA-3D(29-29.83)2015020056 6/11/2015 PWR GWA-4D(38)2015015887 5/20/2015 PWR GWA-7S(34-35)2015017068 5/28/2015 PWR MW-301BR(5-7)2015009425 4/1/2015 PWR MW-301BR(15-16)2015009426 4/1/2015 PWR MW-301BR(30-31)2015009427 4/1/2015 PWR MW-308BR(20-21)2015013197 5/1/2015 PWR MW-308BR(25-26)2015013196 5/1/2015 PWR MW-314BR(57-58)2015020055 6/11/2015 Rock AS-6D(48-48.25)2015020052 6/11/2015 Rock GWA-10D(31.8-32.8)2015020057 6/11/2015 Rock GWA-8D(27.4-28.4)2015020058 6/11/2015 Rock MW-23BR(10-12)2015014249 5/9/2015 Rock MW-318D(42.5-43.42)2015020059 6/11/2015 General Notes: mg/kg - milligrams per kilogram NA - Not analyzed or not reported by analytical laboratory Std. Units - pH units PWR - Partially weathered rock Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. Analyte CAS RN Result Unit NCDENR Industrial Health PSRG NCDENR Protection of Groundwater PSRG NS - No applicable standard for this parameter Shading indicates exceedance of either applicable criteria. bold - indicates exceedance of NC Industrial Health Based PSRG Italic/underline - indicates exceedance of NCDENR Protection of Groundwater PSRG North Carolina Department of Environment and Natural Resources Division of Waste Management Soil Remediation Goals Table (March 2015) - Preliminary Industrial Health Based Soil Remediation Goal (PSRG) and Protection of Groundwater PSRG. **Note: No PSRG for Total Chromium is currently available, as a surrogate the PSRG for Trivalent Chromium was used for comparison purposes only. Nitrate Potassium Sodium Sulfate pH (field)Total Organic Carbon 14797-55-8 7440-09-7 7440-23-5 14808-79-8 PH TOC mg/kg mg/kg mg/kg mg/kg Std. Units mg/kg 100000 NS NS NS NS NS NS NS NS NS NS NS 29.9 UJ 1420 291 U 299 U 5.3 J 1200 29.2 UJ 1360 288 U 292 U 5.4 J 1440 25.7 UJ 2340 267 U 257 U 7.9 J 14000 28.7 UJ 939 290 U 287 U 6.6 J 577 J 27.8 UJ 1170 270 U 278 U 7.1 J 348 J 28.2 UJ 727 283 U 282 U 7.5 J 673 U 34.5 UJ 998 357 U 345 U 7.3 J 574 J 29.3 UJ 2090 304 U 293 U 8.1 J 482 J 27.4 UJ 1280 271 U 274 U 6.6 J 680 27.1 UJ 300 273 U 271 U 5.2 J NA 26.3 UJ 2670 251 U 263 U 7.8 J 623 UJ 29 UJ 2120 301 U 290 U 6.3 J 361 J 29.3 UJ 1160 306 U 293 U 5.3 J 11100 27.9 UJ 2330 266 U 279 U 6.4 J 1790 35.4 UJ 2450 349 U 354 U 6 J 4500 32.1 UJ 744 320 U 258 J 6.1 J 2000 J 29.3 UJ 2460 301 U 497 5.9 J 973 26.5 UJ 1380 262 U 265 U 6.1 J NA 30.2 UJ 306 298 U 302 U 5.9 J NA 25.7 UJ 385 271 U 257 U 5.6 J NA 26.4 UJ 1800 267 U 416 7.6 J NA 25.6 UJ 1740 267 U 256 U 7.8 J 23600 31.3 UJ 317 U 317 U 313 U 5.7 J NA Page 3 of 3 Table 9-1. Surface Water Sample Results - Totals and Dissolved Aluminum Aluminum Antimony Antimony Arsenic Arsenic Barium Barium Boron Boron Beryllium Beryllium Cadmium Cadmium Chromium 7429-90-5 7429-90-5 7440-36-0 7440-36-0 7440-38-2 7440-38-2 7440-39-3 7440-39-3 7440-42-8 7440-42-8 7440-41-7 7440-41-7 7440-43-9 7440-43-9 7440-47-3 D T D T D T D T D T D T D T D ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 87 87 5.6 5.6 10 10 1000 1000 NS NS 6.5 6.5 0.15 0.15 24 Sample Name Sample ID Sample Date SW-1 2015016412 5/27/2015 43 613 1.02 1.21 13.8 15.5 20 18 180 157 1 U 1 U 1 U 1 U 1 U SW-3 2015016411 5/27/2015 12 27600 1 U 1 U 42.7 63.7 42 267 128 107 1 U 1.16 1 U 1 U 1 U SW-4 2015016413 5/27/2015 5 U 127 1 U 1 U 1 U 1 U 18 18 50 U 50 U 1 U 1 U 1 U 1 U 1 U SW-5 2015016409 5/27/2015 5 U 90 1 U 1 U 1 U 1 U 24 25 58 57 1 U 1 U 1 U 1 U 1 U SW-6 92256795002 6/30/2015 NA NA 0.17 J 0.16 J 0.17 J 0.24 J 19 25 150 160 0.2 U 0.2 U 0.08 U 0.08 U 0.49 J SW-7 92256795003 6/30/2015 NA NA 0.2 J 0.22 J 0.14 J 0.24 J 18 29 130 130 0.2 U 0.2 U 0.08 U 0.08 U 0.24 J SW-8 92256795004 6/30/2015 NA NA 0.5 U 0.5 U 0.14 J 0.22 J 19 24 170 180 0.2 U 0.2 U 0.08 U 0.08 U 0.45 J SW-9 2015016410 5/27/2015 5 U 129 1 U 1 U 46.3 51.1 88 99 360 364 1 U 1 U 1 U 1 U 1 U General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. shading + bold - indicates exceedance of NC 02B Surface Water Criteria North Carolina Department of Environment and Natural Resources Division of Water Resources 15A NCAC 02B Surface Water Standards and Protective Values & EPA National Recommended Water Quality Criteria. **NOTE for the purposes of comparison, the lowest value of the Water Supply, Human Health, or Freshwater Aquatic Life criteria was referenced in this table. Analyte CAS RN Fraction Result Unit NC 02B Surface Water (Lowest of AL, HH, WS) NS - No applicable standard for this parameter Page 1 of 4 Table 9-1. Surface Water Sample Results - Totals and Dissolved Sample Name Sample ID Sample Date SW-1 2015016412 5/27/2015 SW-3 2015016411 5/27/2015 SW-4 2015016413 5/27/2015 SW-5 2015016409 5/27/2015 SW-6 92256795002 6/30/2015 SW-7 92256795003 6/30/2015 SW-8 92256795004 6/30/2015 SW-9 2015016410 5/27/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. shading + bold - indicates exceedance of NC 02B Surface Water Criteria North Carolina Department of Environment and Natural Resources Division of Water Resources 15A NCAC 02B Surface Water Standards and Protective Values & EPA National Recommended Water Quality Criteria. **NOTE for the purposes of comparison, the lowest value of the Water Supply, Human Health, or Freshwater Aquatic Life criteria was referenced in this table. Analyte CAS RN Fraction Result Unit NC 02B Surface Water (Lowest of AL, HH, WS) NS - No applicable standard for this parameter Chromium Cobalt Cobalt Copper Copper Iron Iron Lead Lead Manganese Manganese Mercury Molybdenum Molybdenum Nickel 7440-47-3 7440-48-4 7440-48-4 7440-50-8 7440-50-8 7439-89-6 7439-89-6 7439-92-1 7439-92-1 7439-96-5 7439-96-5 7439-97-6 7439-98-7 7439-98-7 7440-02-0 T D T D T D T D T D T T D T D ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 24 3 3 2.7 2.7 NS NS 0.54 0.54 NS NS NS 160 160 16 1 U 1 U 1 U 3.39 J+4.75 21 323 1 U 1 U 16 9 0.0011 J+9.11 9.36 1.2 33.6 1 U 15.5 1 UJ 27.3 40 42400 1 U 20.1 584 1820 0.00385 J+2.56 9.85 1 U 1 U 1 U 1 U 7.38 J+1 U 33 339 1 U 1 U 90 93 0.000978 J+1 U 1 U 1 U 1 U 1 U 1 U 1 U 4.62 J+68 412 1 U 1 U 315 290 0.0012 J+1 U 1 U 1 U 0.67 0.15 J 0.48 J 2.2 1.6 NA NA 0.2 0.88 22 83 0.00334 J+0.39 J 0.26 J 0.78 0.68 0.5 U 0.51 2 1.8 NA NA 0.088 J 0.97 16 98 0.00357 J+0.41 J 0.26 J 0.58 0.59 0.5 U 0.32 J 2.8 1.3 NA NA 0.061 J 0.64 15 55 0.00296 J+0.43 J 0.26 J 1.6 1 U 1 U 1 U 1 U 5.11 J+10 U 140 1 U 1 U 35 154 0.000949 J+7.62 7.65 1 U Page 2 of 4 Table 9-1. Surface Water Sample Results - Totals and Dissolved Sample Name Sample ID Sample Date SW-1 2015016412 5/27/2015 SW-3 2015016411 5/27/2015 SW-4 2015016413 5/27/2015 SW-5 2015016409 5/27/2015 SW-6 92256795002 6/30/2015 SW-7 92256795003 6/30/2015 SW-8 92256795004 6/30/2015 SW-9 2015016410 5/27/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. shading + bold - indicates exceedance of NC 02B Surface Water Criteria North Carolina Department of Environment and Natural Resources Division of Water Resources 15A NCAC 02B Surface Water Standards and Protective Values & EPA National Recommended Water Quality Criteria. **NOTE for the purposes of comparison, the lowest value of the Water Supply, Human Health, or Freshwater Aquatic Life criteria was referenced in this table. Analyte CAS RN Fraction Result Unit NC 02B Surface Water (Lowest of AL, HH, WS) NS - No applicable standard for this parameter Nickel Selenium Selenium Strontium Strontium Thallium Thallium Vanadium Vanadium Zinc Zinc Alkalinity, HCO3 Alkalinity, CO3 Alkalinity, lab Calcium 7440-02-0 7782-49-2 7782-49-2 7440-24-6 7440-24-6 7440-28-0 7440-28-0 7440-62-2 7440-62-2 7440-66-6 7440-66-6 ALK-HCO3 ALK-CO3 ALK-LAB 7440-70-2 T D T D T D T D T D T N N N T ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 16 NS NS 14000 14000 0.24 0.24 NS NS 36 36 NS NS NS NS 2.5 2.32 2.87 322 320 0.2 U 0.2 U 4.94 6.65 34 J+212 23000 11000 37000 19700 15.9 1 U 1 U 264 302 0.2 U 0.315 1.25 54.1 5 UJ 93 51000 10000 U 51000 20000 1 U 1 U 1 U 143 151 0.2 U 0.2 U 0.3 U 0.567 17 J+5 U 52000 10000 U 52000 14000 1 U 1 U 1 U 134 143 0.2 U 0.2 U 0.3 U 0.42 5 UJ 5 U 50000 10000 U 50000 13800 0.57 0.5 U 0.5 U 42 45 0.025 J 0.1 U 1.2 2.8 4.7 J 5 J+17600 5000 U 17600 6300 0.6 0.5 U 0.5 U 41 45 0.1 U 0.1 U 0.85 J 3.1 10 U 20 J+16800 5000 U 16800 5910 0.47 J 0.5 U 0.5 U 43 46 0.1 U 0.1 U 0.69 J 2.5 10 U 4.6 J+18300 5000 U 18300 6340 1.16 1 U 1 U 883 895 0.2 U 0.2 U 0.701 0.947 18 J+10 100000 10000 U 100000 45400 Page 3 of 4 Table 9-1. Surface Water Sample Results - Totals and Dissolved Sample Name Sample ID Sample Date SW-1 2015016412 5/27/2015 SW-3 2015016411 5/27/2015 SW-4 2015016413 5/27/2015 SW-5 2015016409 5/27/2015 SW-6 92256795002 6/30/2015 SW-7 92256795003 6/30/2015 SW-8 92256795004 6/30/2015 SW-9 2015016410 5/27/2015 General Notes: ug/l - micrograms per liter NA - Not analyzed or not reported by analytical laboratory T - Total D - Dissolved N - Fraction not applicable Comparison Criteria: Qualifier Notes: U -- Not detected above the reporting detection limit. J -- Estimated Concentration J+ -- Estimated concentration, biased high. J- --Estimated concentration, biased low. shading + bold - indicates exceedance of NC 02B Surface Water Criteria North Carolina Department of Environment and Natural Resources Division of Water Resources 15A NCAC 02B Surface Water Standards and Protective Values & EPA National Recommended Water Quality Criteria. **NOTE for the purposes of comparison, the lowest value of the Water Supply, Human Health, or Freshwater Aquatic Life criteria was referenced in this table. Analyte CAS RN Fraction Result Unit NC 02B Surface Water (Lowest of AL, HH, WS) NS - No applicable standard for this parameter Chloride Magnesium Methane Nitrite as N Nitrogen, NO2 plus NO3 Potassium Sodium Sulfate Sulfide Total Organic Carbon Total Dissolved Solids Total Suspended 16887-00-6 7439-95-4 74-82-8 14797-65-0 NO2-NO3 7440-09-7 7440-23-5 14808-79-8 18496-25-8 TOC TDS TSS N T N N N T T N N N N N ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 230000 NS NS NS NS NS NS 250000 NS NS NS NS 11000 7240 10 UJ 29 NA 3090 11500 53000 100 U 3800 140000 16000 11000 5850 20 UJ 76 NA 3710 10800 23000 100 U 2200 120000 680000 10000 4390 10 UJ 145 NA 1410 8640 5900 100 U 1500 97000 5000 U 13000 5500 10 UJ 300 NA 2230 9210 10000 100 U 2700 110000 5000 U 9400 2560 9.9 J+NA 260 5000 U 4010 J 5100 100 U 3300 72000 24700 9400 2480 9.6 J+NA 310 5000 U 4260 J 5000 100 U 3500 74000 24500 9800 2580 16.3 J+NA 270 5000 U 3900 J 5000 100 U 5900 73000 J 19200 13000 13500 10 UJ 132 NA 4690 17000 90000 100 U 2100 270000 32000 Page 4 of 4 Page 1 of 3 Table 10-6. Monitoring Well Construction Information Monitoring Well Type Monitoring Well ID Number Date Water Level was Obtained Elevation of Water Level (ft msl) Land Surface Elevation (ft msl) Top of Well Casing Elevation (ft msl) Screened Interval Elevation (ft msl) Screened Interval Elevation (ft bgs) Bottom of Well Elevation (ft msl) Deep AB-5D 6/26/15 521.56 534.39 533.85 500.39 - 495.39 34 - 39 495.09 Deep AB-5D-A --- --- 534.39 --- --- - --- --- - --- --- Shallow AB-5S 6/26/15 522.06 534.21 534.00 527.21 - 512.21 7 - 22 511.91 Deep AB-10D 6/26/15 492.14 539.66 539.42 462.66 - 457.66 77 - 82 457.36 Shallow AB-10S 6/26/15 520.32 539.65 593.44 524.65 - 509.65 15 - 30 509.35 Shallow- Lower AB-10SL 6/26/15 498.84 539.65 539.42 496.65 - 491.65 43 - 48 491.35 Shallow- Lower AB-15SL --- --- 526.78 --- --- - --- --- - --- --- Shallow AB-20S --- --- 533.68 --- --- - --- --- - --- --- Shallow- Lower AB-20SL --- --- 533.68 --- --- - --- --- - --- --- Bedrock AB-25BR 6/26/15 486.12 539.43 542.90 395.43 - 390.43 144 - 149 390.13 Deep AB-25D 6/26/15 491.51 539.47 542.97 457.47 - 452.47 82 - 87 452.17 Shallow AB-25S 6/26/15 496.57 539.37 542.87 509.37 - 494.37 30 - 45 494.07 Bedrock AB-30BR 6/26/15 489.90 529.63 529.21 420.63 - 415.63 109 - 114 415.33 Deep AB-30D 6/26/15 490.60 529.67 529.44 475.67 - 470.67 54 - 59 470.37 Shallow AB-30S 6/26/15 514.18 529.67 529.28 514.67 - 499.67 15 - 30 499.37 Bedrock AB-35BR 6/26/15 508.98 528.75 531.99 447.75 - 442.75 81 - 86 442.45 Deep AS-2D 6/26/15 528.32 560.68 561.03 507.68 - 502.68 53 - 58 502.38 Deep AS-4D 6/26/15 544.67 559.22 562.13 524.22 - 519.22 35 - 40 518.92 Deep AS-6D 6/26/15 551.25 584.28 586.66 528.28 - 523.28 56 - 61 522.98 Bedrock AS-8BR 6/26/15 545.39 579.29 582.10 515.29 - 510.29 64 - 69 509.99 Deep AS-8D 6/26/15 545.13 579.30 582.23 531.30 - 527.3 48 - 52 527 Deep AS-10D 6/26/15 570.06 588.89 591.84 550.89 - 545.89 38 - 43 545.59 Shallow AS-12S 6/26/15 548.95 557.00 559.70 543.10 - 533.1 13.9 - 23.9 532.8 Deep BG-1D 6/26/15 500.38 513.29 516.40 504.29 - 499.29 9 - 14 498.99 Page 2 of 3 Monitoring Well Type Monitoring Well ID Number Date Water Level was Obtained Elevation of Water Level (ft msl) Land Surface Elevation (ft msl) Top of Well Casing Elevation (ft msl) Screened Interval Elevation (ft msl) Screened Interval Elevation (ft bgs) Bottom of Well Elevation (ft msl) Shallow BG-1S --- --- 513.29 --- --- - --- --- - --- --- Deep BG-5D 6/26/15 507.17 511.94 514.91 483.94 - 478.94 28 - 33 478.64 Shallow BG-5S 6/26/15 507.29 512.26 515.24 501.76 - 491.76 10.5 - 20.5 491.46 Deep GWA-1D 6/29/15 571.01 598.81 601.58 484.81 - 479.81 114 - 119 479.51 Shallow GWA-1S 6/29/15 572.58 598.83 601.39 568.83 - 553.83 30 - 45 553.53 Deep GWA-2D 6/26/15 560.28 598.05 588.04 542.05 - 537.05 56 - 61 536.75 Shallow GWA-2S 6/26/15 564.12 584.97 587.57 568.97 - 553.97 16 - 31 553.67 Deep GWA-3D 6/26/15 549.82 571.48 574.07 537.48 - 532.48 34 - 39 532.18 Shallow GWA-3S 6/26/15 552.96 571.41 573.99 557.61 - 547.61 13.8 - 23.8 547.31 Deep GWA-4D 6/26/15 499.95 524.09 527.20 481.09 - 476.09 43 - 48 475.79 Shallow GWA-4S 6/26/15 516.36 524.65 527.87 504.65 - 489.65 20 - 35 489.35 Bedrock GWA-5BR 6/26/15 496.30 497.11 499.73 442.11 - 437.11 55 - 60 436.81 Deep GWA-6D 6/26/15 483.26 501.95 501.20 472.95 - 467.95 29 - 34 467.65 Shallow GWA-6S 6/26/15 487.95 501.86 501.48 492.86 - 482.86 9 - 19 482.56 Deep GWA-7D 6/26/15 526.15 543.73 543.48 497.73 - 492.73 46 - 51 492.43 Shallow GWA-7S 6/26/15 527.08 543.37 543.16 529.37 - 514.37 14 - 29 514.07 Deep GWA-8D 6/26/15 567.75 581.83 584.01 546.83 - 541.83 35 - 40 541.53 Shallow GWA-8S 6/26/15 568.52 581.50 583.87 575.50 - 560.5 6 - 21 560.2 Deep GWA-9D 6/29/15 580.37 608.41 611.30 541.41 - 536.41 67 - 72 536.11 Shallow GWA-9S 6/29/15 581.50 608.87 611.72 576.87 - 561.87 32 - 47 561.57 Deep GWA-10D 6/29/15 520.00 550.19 553.64 517.19 - 512.19 33 - 38 511.89 Shallow GWA-10S 6/29/15 523.07 550.05 553.45 537.05 - 522.05 13 - 28 521.75 Deep GWA-11D 6/26/15 541.45 557.12 559.78 527.62 - 522.62 29.5 - 34.5 522.32 Shallow GWA-11S 6/26/15 540.35 557.55 560.12 547.55 - 532.55 10 - 25 532.25 Deep GWA-12D 6/29/15 564.31 582.06 584.49 555.06 - 550.06 27 - 32 549.76 Shallow GWA-12S 6/29/15 572.49 582.53 584.93 577.03 - 567.03 5.5 - 15.5 566.73 Page 3 of 3 Monitoring Well Type Monitoring Well ID Number Date Water Level was Obtained Elevation of Water Level (ft msl) Land Surface Elevation (ft msl) Top of Well Casing Elevation (ft msl) Screened Interval Elevation (ft msl) Screened Interval Elevation (ft bgs) Bottom of Well Elevation (ft msl) Deep GWA-14D 6/26/15 493.65 496.70 500.19 485.20 - 480.2 11.5 - 16.5 479.9 Shallow GWA-14S 6/26/15 489.05 496.54 499.97 493.54 - 488.54 3 - 8 488.24 Deep GWA-15D 6/26/15 481.53 501.26 504.13 475.26 - 470.26 26 - 31 469.96 Shallow GWA-15S 6/26/15 DRY 500.96 527.66 493.46 - 488.46 7.5 - 12.5 488.16 Bedrock MW -22BR 6/26/15 486.50 502.61 502.32 444.61 - 439.61 58 - 63 439.31 Bedrock MW -23BR 6/26/15 ARTESIAN 524.46 527.66 468.46 - 463.46 56 - 61 463.16 Bedrock MW -301BR 6/29/15 570.64 590.34 593.55 553.34 - 548.34 37 - 42 548.04 Bedrock MW -303BR 6/26/15 557.85 648.36 651.37 511.36 - 506.36 137 - 142 506.06 Bedrock MW -306BR 6/26/15 544.34 611.46 613.62 509.46 - 504.46 102 - 107 504.16 Bedrock MW -306BR- A --- --- 611.46 --- --- - --- --- - --- --- Bedrock MW -308BR 6/26/15 521.08 530.46 532.69 453.46 - 448.46 77 - 82 448.16 Bedrock MW -310BR 6/26/15 521.48 539.12 538.91 466.12 - 461.12 73 - 78 460.82 Bedrock MW -311BR 6/26/15 495.88 536.21 537.73 416.21 - 411.21 120 - 125 410.91 Bedrock MW -314BR 6/26/15 510.45 540.06 539.75 471.06 - 466.06 69 - 74 465.76 Bedrock MW -315BR 6/26/15 525.57 567.52 570.75 507.82 - 492.82 59.7 - 74.7 492.52 Bedrock MW -317BR 6/26/15 547.75 569.74 571.96 486.74 - 481.74 83 - 88 481.44 Deep MW -318D 6/26/15 536.72 654.59 567.21 610.09 - 605.09 44.5 - 49.5 604.79 Table 10-7. Compliance and Voluntary Monitoring Well Construction Information Elevation of Water Level Land Surface Elevation Top of Well Casing Elevation Bottom of Well Elevation (ft msl)(ft msl)(ft msl)(ft msl) MW-8 Shallow ---585.09 ---23.4 -33.4 - MW-9 Shallow 6/29/2015 506.02 524.27 526.41 514.47 -504.47 11.94 -21.94 504.17 MW-9D Deep 6/29/2015 493.85 524.69 527.04 460.99 -455.99 66.05 -71.05 455.69 MW-10 Shallow --529.88 531.81 521.01 -511.01 10.8 -20.8 510.71 MW-10D Deep 6/29/2015 482.00 529.88 531.8 464.25 -459.25 67.55 -72.55 458.95 MW-11 Shallow --529.17 531.16 516.77 -506.77 14.39 -24.39 506.47 MW-11D Deep 6/29/2015 DRY 529.17 531.16 480.34 -475.34 50.82 -55.82 475.04 MW-12 Shallow 6/29/2015 572.68 590.71 593.59 566.47 -556.47 27.12 -37.12 556.17 MW-12D Deep 6/29/2015 572.71 590.79 593.23 553.26 -548.26 39.97 -44.97 547.96 MW-20D Deep 6/29/2015 558.1 559.42 562.23 523.03 -518.03 39.2 -44.2 517.73 MW-20S Shallow 6/29/2015 556.5 559.71 562.28 555.17 -540.17 7.11 -22.11 539.87 MW-21D Deep 6/29/2015 496.55 496.23 498.9 482.5 -477.5 16.4 -21.4 477.2 MW-21S Shallow 6/29/2015 493.38 496.03 498.8 492.24 -487.24 6.56 -11.56 486.94 MW-22D Deep 6/29/2015 465.56 502.22 505.19 490.16 -480.16 14.86 -24.86 479.86 MW-22S Shallow 6/29/2015 484.77 502.05 504.52 470.58 -465.58 34.11 -39.11 465.28 MW-23D Deep 6/29/2015 513.47 524.98 528.22 514.47 -504.47 10.11 -20.11 504.17 Screened Interval (ft bgs) Voluntary Compliance Monitoring Well Type Monitoring Well ID Number Date Water Level was Obtained Screened Interval Elevation (ft msl) Page 1 of 1 Page 1 of 1 Table 16-1. Recommended Parameters and Constituents PARAMETER RL UNITS METHOD FIELD PARAMETERS pH NA SU Field Water Quality Meter Conductivity NA mmho/cm Field Water Quality Meter Temperature NA ºC Field Water Quality Meter Dissolved Oxygen NA mg/L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Turbidity NA NTU Field Water Quality Meter Ferrous Iron NA mg/L Field Test Kit DETECTION MONITORING CONSTITUENTS Boron 50 µg/L EPA 200.7 or 6010 Calcium 0.01 mg/L EPA 200.7 Chloride 0.1 mg/L EPA 300.0 or 9056A Fluoride mg/L Sulfate 0.1 mg/L EPA 300.0 or 9056A Total Dissolved Solids 25 mg/L SM 2540C ASSESSMENT MONITORING CONSTITUENTS Antimony 1 µg/L EPA 200.8 or 6020 Arsenic 1 µg/L EPA 200.8 or 6020 Barium 5 µg/L EPA 200.7 or 6010 Beryllium 1 µg/L EPA 200.8 or 6020A Chromium µg/L EPA 200.7 or 6010 Cobalt 1 µg/L EPA 200.8 or 6020A Iron 10 µg/L EPA 200.7 or 6010 Lead 1 µg/L EPA 200.8 or 6020 Manganese 5 µg/L EPA 200.7 or 6010 Total Combined Radium (226 and 228) 4 5 pCi/L EPA 903.0 Selenium 1 µg/L EPA 200.8 or 6020 Thallium (low level) 0.2 µg/L EPA 200.8 or 6020 Vanadium (low level) 0.3 mg/L EPA 200.8 or 6020A Page 1 of 1 Table 16-2. Sample Locations in Interim Groundwater Monitoring Plan Well ID Location / Purpose GWA-1S Background GWA-1D Background GWA-9S Background GWA-9D Background GWA-14S Background GWA-14D Background MW -23D Background MW -23BR Background BG-5S Background BG-5D Background MW -21S Down-gradient – Ash Basin MW -22D Down-gradient – Ash Basin GWA-5BR Down-gradient – Ash Basin MW -22S Down-gradient – Ash Basin MW -22D Down-gradient – Ash Basin MW -22BR Down-gradient – Ash Basin AB-30S Down-gradient – Ash Basin AB-30D Down-gradient – Ash Basin AB-30BR Down-gradient – Ash Basin GWA-10S Down-gradient – Ash Storage GWA-10D Down-gradient – Ash Storage GWA-11S Down-gradient – Ash Storage GWA-11D Down-gradient – Ash Storage Dan River Steam Station Ash Basin Groundwater Incident No.: NPDES Permit No. Ear Consultant Information Latitude and Longitude of Facility: Report Date: Dan River Steam Station 900 South Edgewood Road Eden, NC 27288 Not Assigned NC0003468 Duke Energy Carolinas, LLC 526 South Church St Charlotte, NC 28202 704.382.3853 HDR Engineering, Inc. of the Carolinas 440 South Church St, Suite 900 Charlotte, NC 28202 704.338.6700 36' 29' 32" N, 79' 42' 59" W November 12, 2015 D a n R i v e r S R - 1 7 7 9 AB5SAB5S521.88521.88 AB10SAB10S520.04520.04AB10SLAB10SL498.51498.51 AB25SAB25S495.48495.48 AB30SAB30S514.09514.09 BG5SBG5S507.26507.26 GWA1SGWA1S569.14569.14 GWA2SGWA2S562.48562.48 GWA3SGWA3S552.67552.67 GWA4SGWA4S506.09506.09 GWA6SGWA6S486.91486.91 GWA7SGWA7S525.58525.58 GWA8SGWA8S568.01568.01 GWA9SGWA9S580.3580.3 GWA10SGWA10S523.18523.18 GWA11SGWA11SNMNMGWA12SGWA12S571.23571.23 GWA14SGWA14SNMNM GWA15SGWA15SNMNM MW10MW10DRYDRY MW12MW12571.17571.17 MW20SMW20S555.74555.74 MW21SMW21S493.74493.74 MW22SMW22S484.3484.3 MW9MW9DRYDRY 5 7 0 '5 7 0 ' 560'560' 550'550' 540'540' 530'530' 520'520' 510'510' 500'500' 5 6 0 '5 6 0 ' 5 5 0 '5 5 0 ' 5 4 0 '5 4 0 ' 5 3 0 '5 3 0 ' 5 2 0 '5 2 0 ' 5 8 0 '5 8 0 ' 5 1 0 '5 1 0 ' 5 7 0 '5 7 0 '5 6 0 '5 6 0 ' ROCKINGHAM COUNTY, NORTH CAROLINA DATE FIGURE NOVEMBER, 2015 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 \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 : G P O P U L I S - D A T E : 1 1 /1 1 /2 0 1 5 LEGEND: GROUNDWATER ASSESSMENT MONITORING WELL COMPLIANCE GROUNDWATER MONITORING WELL VOLUNTARY GROUNDWATER MONITORING WELL GROUNDWATER CONTOUR LINE DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY STREAM 500 0 500 1,000 SCALE (FEET) N POTENTIOMETRIC SURFACE MAP – "S" WELLS DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN D a n R i v e r S R - 1 7 7 9 5 3 0 '5 3 0 ' 5 2 0 '5 2 0 ' 5 1 0 '5 1 0 ' 5 0 0 ' 5 0 0 ' 4 9 0 ' 4 9 0 ' 5 4 0 '5 4 0 ' AB25BRAB25BR485.85485.85 AB30BRAB30BR505.97505.97 AB35BRAB35BR509.53509.53 AS8BRAS8BRNMNM GWA5BRGWA5BR496.62496.62 MW22BRMW22BR486.06486.06 MW23BRMW23BRNMNM MW301BRMW301BRNMNM MW303BRMW303BRNMNM MW306BRMW306BRNMNM MW308BRMW308BR521.24521.24 MW310BRMW310BRNMNM MW311BRMW311BR495.51495.51MW314BRMW314BR510.08510.08 MW315BRMW315BRNMNM MW317BRMW317BR547.58547.58 ROCKINGHAM COUNTY, NORTH CAROLINA DATE FIGURE NOVEMBER, 2015 3-5 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 \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 : G P O P U L I S - D A T E : 1 1 /1 1 /2 0 1 5 LEGEND: GROUNDWATER ASSESSMENT MONITORING WELL GROUNDWATER CONTOUR LINE DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARYASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY STREAM 500 0 500 1,000 SCALE (FEET) N POTENTIOMETRIC SURFACE MAP – "BR" WELLS DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN Corrective Action Plan Part I �� Dan River Steam Station Ash Basin Table 2-2. Background Groundwater Concentrations for the DRSS Site: Ranges of Samples with Turbidity <10 NTU MW-23D - New Proposed Regional 2-10 Private Well Compliance Well Background Provisional Background Data (May 2015- Background Wells Background Constituent Groundwater August 2015) Groundwater Groundwater Groundwater Concentrations (pg/L) Concentrations Concentrations Concentrations (pg/L) (2010 to 2015) (June 2015) (pg/L) (pg/L)/L Antimony* North Carolina <1 to 1.4 <1 <0.5 to 1.16 1 0.5 to 20 Arsenic (Rockingham <1 to 14.1 <1 < 1 to 6.29 1 County) Beryllium* Not reported <0.2 to <1 <0.2 <1 0.2 Boron Not Reported <5 to <50 <50 <50 50 0.5 to 40 Chromium (Rockingham <0.5 to <5 <5 <1 5 County) Cobalt* 1 to 2 <0.5 to <1 <0.5 <1 0.5 Hexavalent Not reported <0.03 to <0.06 0.089J No data 0.09 Chromium 25 to 27,270 Iron (Rockingham <10 to 118 <10 <10 to 386 10 County) 2.5 to 115 Lead (Rockingham <1 to 4.06 <10 <0.1 to <1 10 County) Below detect to Manganese 785.8 (20-mile radius <5 to 110 63 31 to 920 63 from site 7.01 to 8.5 SU pH (20-mile radius 5.73 to 8.02 SU 6.65 to 6.78 SU 5.45 to 7.47 SU 6.65 to 6.78 SU from site Radium-226 1.22 to 2.357 2.357 Radium-228 Not reported Not reported Not reported pCi/L pCi/L combined 2.5 to 26 Selenium (Rockingham <0.5 to <1 <1 <0.5 to <1 1 County) 29,000 (mean value) Sulfate (Dan River- 960 to 10,000 30,000 to 31,000 12,000 to 41,000 31,000 Danville Area Mesozoic Basin <1 (Blue Ridge Thallium* Mountain and <0.1 to <0.2 <0.2 <0.1 to <0.2 0.2 Piedmont aquifers) TDS Not reported 50,000 to 200,000 to 110,000 to 280,000 150,000 280,000 270,000 0.1 to 1.2 Vanadium* (20-mile radius <300 to 1,330 <1 <0.3 to 2.75 1 from site Notes: 1. Ng/L = micrograms per liter; SU = Standard Units; pCi/L = picocuries per liter 2. < indicates concentration less than laboratory reporting limit. 3. J = Estimated concentration; J+ = Estimated concentration, biased high 26 Corrective Action Plan Part I �� Dan River Steam Station Ash Basin Table 2-9. Proposed Provisional Background Soil Concentrations Constituent Number of Samples Number of Detections Range (mg/kg) Proposed Provisional Background Soil Concentrations (95% UTL) (mg/kg) Aluminum 23 23 7,360 to 38,900 40,400 Antimony 23 0 <5.1 to <7.6 7.6* Arsenic 23 12 3.1 to 30.6 23 Barium 23 23 34.2 to 242 281 Boron 23 5 <13.4 to 63.1 63.9 Cadmium 23 1 0.44 to <0.91 0.91* Calcium 23 20 77.4 to 39,100 118,100 Chloride 23 1 168 to <372 372* Chromium 23 23 6.4 to 187 144 Cobalt 23 23 7.5 to 42.6 36 Copper 23 23 2.8 to 79.5 79.5 Iron 23 23 12,200 to 95,900 88,550 Lead 23 23 8.2 to 31.3 29.9 Magnesium 23 23 924 to 19,400 38,120 Manganese 23 23 82.7 to 5170 4,150 Mercury 23 17 0.0047 to 0.04 0.041 Molybdenum 23 9 1.6 to 22.6 13.5 Nickel 23 23 6.7 to 52.2 59.7 Nitrate 23 0 <25.8 to <37.2 37.2* pH (field) 23 23 4.5 to 8.6 4.5 to 8.6* Potassium 23 23 168 to 2,730 3,060 Selenium 23 2 3.9 to 7.8 7.8* Sodium 23 4 160 to <378 2,190 Strontium 23 23 1.9 to 257 569 Sulfate 23 3 145 to <372 372* Thallium 23 0 <5.1 to <7.6 7.6* TOC 23 23 457 to 23,800 50,150 Vanadium 23 23 8.4 to 75.7 78.3 Zinc 23 23 23.5 to 203 217 Notes: 1. mg/kg = milligrams per kilogram 2. UTL -upper tolerance limit 3. * Value shown is highest detection or highest ND. Too few detections to develop UTL. 2.6.2 Soil Exceedances of NC PSRGs for POGs The horizontal and vertical extent of soil contamination at the site attributed to ash handling and storage was delineated in the CSA (HDR 2015) with the exception of horizontal and vertical extent north of Ash Storage 1. Additional assessment is planned to address the exceptions noted above. These exceptions were identified as data gaps in the CSA and will be addressed under a separate cover. Soil results for COls, along with a comparison to NC PSRGs for POG, soil PPBCs, and background concentrations are provided in Table 2-10. Soil sample locations and analytical results are depicted on Figure 2-3. 36 F)l Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Site Location: NPDES Permit No. Permittee and Current Property Owner: Consultant Information Report Date: Dan River Steam Station 900 South Edgewood Road Eden, NC 27288 N C0003468 Duke Energy Carolinas, LLC 526 South Church St Charlotte, NC 28202 704.382.3853 HDR Engineering, Inc. of the Carolinas 440 South Church St, Suite 900 Charlotte, NC 28202 704.338.6700 February 10, 2016 NOTES: 1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. 2. WASTE BOUNDARY IS APPROXIMATE. 3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY. 4. COMPLIANCE SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SURFICIAL WATER TABLE. 5. COMPLIANCE DEEP MONITORING WELLS (D) ARE SCREENED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND REGOLITH. 6. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010) 7. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014. 8. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0307 (a). 9. PROPOSED WELL LOCATIONS ARE APPROXIMATE AND MAY BE ADJUSTED BASED ON FIELD CONDITIONS. 10. SEEP SAMPLE LOCATIONS WERE OBTAINED BY HDR USING A TRIMBLE HANDHELD GPS UNIT. 11. HYDROGRAPHY WAS OBTAINED FROM THE PROVISIONAL JURISDICTIONAL WATERS MAP (USACE APPROVAL PENDING), PROVIDED BY AMEC FOSTER WHEELER, DATED MAY 29, 2015. SCALE (FEET) 150' 0 150' 300' /' = 300' F)l LEGEND: — — — — — — DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH STORAGE AREA BOUNDARY COMPLIANCE BOUNDARY COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY BOUNDARY STREAM WETLANDS — _ _ _ _ _ LANDFILL- LAND CLEARING & INERT DEBRIS (LCID) TOPOGRAPHIC CONTOUR (4-FT INTERVAL) ASH BASIN COMPLIANCE GROUNDWATER ® MONITORING WELL LOCATIONS ASH BASIN VOLUNTARY GROUNDWATER Q MONITORING WELL LOCATIONS a GROUNDWATER MONITORING WELL LOCATIONS SOIL BORING LOCATIONS SURFACE WATER AND SEDIMENT SAMPLE LOCATION ® AREA OF WETNESS SAMPLE LOCATIONS i TEMPORARY GROUNDWATER ASSESSMENT LOCATIONS = NCDECL SAMPLE LOCATIONS RIVER FLOW DIRECTION SITE SAMPLING LOCATIONS DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA DATE FEBRUARY 2016 FIGURE 21 I� � n y, L r ! 4 F T - m.. T • r -.. � .� . •. � 'y+' fin,; ,- -, ♦ n !�, ^ , A SO �V'TER h,Li�'-C au 0aC�3D "All 111ow-, R� fi r 8 V0, 00 00, dOo fez P n , ry o V _. K ,, � � 1 ��\ r,rg�9Rf '� � y r� ' �.�4" "sir t � � ,��r,� �. v a •~� �,� >\ 'U�� t p;�i' � ` '• '� `�.t o ^� 4 4 .5,. ¢d '` l "Y � Ft, , t xxt u �^� ,'.�{ ` �,s\ y �,. �'(�<.*.' 5 'Yf ;.`y+sC '^,r t.;•- .� �, ��. .,`� �.- 6��"t, ".,Z-/� e �.-� y,Y w`�.<:. .,J., s.::. - +„ "- N�ft%AM zye a-q X v. s o ° , (CPU / I Aw 1 PRI Y 4$ i (CELL ♦ I I I / I / I I / ♦ oo / / of 1 i � 500 0 500 1, 000 SCALE (FEET) AREA OF EXCEEDANCES OF 2L STANDARDS OR IMACS DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA z LEGEND: GROUNDWATER FLOW DIRECTION RIVER FLOW DIRECTION AREA OF As, B, Co, Fe, Mn, SO4, TDS AND V EXCEEDANCES REPORTED PRIVATE WATER SUPPLY WELL ASH STORAGE — — — — DUKE ENERGY PROPERTY BOUNDARY ASH BASIN WASTE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKE ENERGY PROPERTY BOUNDARY UNNAMED STREAMS NOTES: NC 2L GROUND WATER STANDARDS OR IMAC VALUES Arsenic (As)s - 10 pg/L Boron (B) - 10 pg/L Cobalt (Co) - 1 pg/L Chromium (Cr) - 10 pg/L Iron (Fe) - 300 pg/L Manganese (Mn): - 50 pg/L Sulfate (SO4) - 250,000 10 pg/L Vanadium (V) - 0.3 pg/L Total Dissolved Solids (TDS) - 500,000 pg/L Concentrations of Co, Fe, Mn, and V that were detected above 2L standards or IMAC and below typical background concentrations (i.e. PPBCs) were omitted as they were determined to be representative of naturally occurring conditions. DATE FEBRUARY 2016 FIGURE 2-5 E"'aporation/Precipita . ` tlon . ►t ► ► ► ► , ►,'►► , ► ► ' '► '} Ash Storage 2 Ash Storage 1 Former Dredge Pond b I ' ` + ' ► ► ' b ► b I'► ` '• ` b ' b b A ►► ► ►.. — �.. ' ' ► ' , ► ► ► ►' `".. ► ►►!` ' ► ` '.._, .�--r— — — _ �_ ► ► ► ► A XF Wow 1w . - I Ash Basin N Secondary Cell otp Ash Basin \rY Primary Cell , , ♦ ,,,,, t ,,,,,:, '�� 9 ✓ FFact °wL�Settk»g�ond:_ ,,,,,,,, ,, _.� ' ;•,,;``r I vicester _ _ Qa ,,, L,ayto OW ,,,,,,,, ,,, i er �. ,, % :: y i *VISUAL AID ONLY - Depiction NOT to Scale* LEGEND ■ Approximate Pond/River Extent Notes: NC 2L or IMAC Groundwater Exceedances ■ Regolith (Shallow and Deep Flow Layers) Arsenic (As) - 10 ug/1(micrograms per liter) Boron (B) - 700 ug/l Cobalt (Co) - 1 ug/1 Fractured Bedrock (Bedrock Flow Layer) Iron (Fe) - 300 ug/1 Manganese (Mn) - 50 ug/l Areas of arsenic, boron, chromium, sulfate Sulfate - 250,000 ug/1 and total dissolved solids (TDS) 2L Exceedances TDS - 500,00 ug/I Vanadium (V) - 0.3 ug/1 Source Areas Round I and Round 2 data were evaluated and exceedances are representative of both sampling events. Unnamed Tributary with Flow Direction - Concentrations of cobalt, iron, manganese, and vanadium that were detected above 2L Standards or IMAC Groundwater Flow Direction and below typical background concentrations (i.e., PPBCs) were omitted as they were determined to be representative Cross Section Location A -A' of naturally -occurring conditions. i IMN +rvacv h aver, smoe ivm cnx1--xei0x 75 SITE CONCEPTUAL MODEL - 3D REPRESENTATION DUKE ENERGY CAROLINAS, LLC DAN RIVER STEAM STATION ROCKINGHAM COUNTY, NORTH CAROLINA DATE FEBRUARY 2016 FIGURE 3-1 1 I 2 I 3 I 4 I 5 I 6 I 7 I 650 WE 550 z 0 500 a w J W 450 400 L 0 200 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 400 600 800 1000 1200 DISTANCE (ft) ISSUE DATE DESCRIPTION SECTION A SCALE: HORIZ 1 "=100' - VERT 1 "=25' PROJECT MANAGER B. COSTNER DRAWN BY: - DESIGNED BY: - CHECKED BY: - APPROVED BY: - PROJECT NUMBER 000000000266731 1400 1600 NOT FOR CONSTRUCTION :We 2000 2200 DUKE ENERGY CAROLINASILIC �•� DUKE ENERGY DAN RIVER STEAM STATION ROCKINGHAM COUNTY NORTH CAROLINA 650 550 500 450 400 2400 NOTES: 1. CONCEPTUAL DRAWING FOR DEMONSTRATION PURPOSES ONLY. 2. BEDROCK FRACTURES DEPICTED ON SECTION DO NOT REPRESENT ACTUAL FRACTURE FREQUENCY OR ORIENTATION. D LEGEND: WATER TABLE SURFACE (JUNE 2015) FI LL ASH REGOLITH BEDROCK (FRACTURED) LEACHATE GROUNDWATER FLOW PATH SITE CONCEPTUAL MODEL CROSS SECTIONAL 0 1" 2" FILENAME FIGURE 3-2.DWG SHEET SCALE AS NOTED FIGURE 3-2 C vi Table 2-4 Ash Basin Water Analytical Results - Round 1 and Round 2 Location: Event: Sample Date: Sample Type Code: Sample Name/ID: SW-1 SW-1 SW-9 SW-9 Round 1 Round 2 Round 1 Round 2 5/27/2015 9/11/2015 5/27/2015 9/11/2015 N N N N SW-1 DR-SW-1-NS-3Q15 SW-9 DR-SW-9-NS-3Q15 Constituent CAS RN Fractio SWQS Criteria NCDEQ 02B GWQS Criteria NCDEQ 02L Unit Aluminum 7429-90-5 D - ug/I 43 100 U 5 U 100 U Aluminum 7429-90-5 T 87 ug/I 1 613 100 U 129 360 Antimony 7440-36-0 D - ug/I 1.02 1.1 1 U 0.58 Antimony 7440-36-0 T 640 1 ug/I 1.21 0.97 1 U 0.72 Arsenic 7440-38-2 D 150 - ug/I 13.8 31.8 46.3 59 Arsenic 7440-38-2 T 10 10 ug/I 15.5 37.9 51.1 75.9 Barium 7440-39-3 D - ug/I 20 110 88 92 Barium 7440-39-3 T 200000 700 ug/I 18 120 99 120 Beryllium 7440-41-7 D 6.5 - ug/I 1 1 U 0.2 U 1 U 0.2 U Beryllium 7440-41-7 T - 4 ug/I 1 U 0.2 U 1 U 0.11 J Boron 7440-42-8 D - ug/I 180 180 360 380 Boron 7440-42-8 T - 700 ug/I 157 190 364 400 Cadmium 7440-43-9 D 0.15 - ug/I 1 U 0.08 U 1 U 0.08 U Cadmium 7440-43-9 T - 2 ug/I 1 U 0.08 U 1 U 0.08 U Calcium 7440-70-2 T - ug/I 19700 20800 45400 51600 Chromium 7440-47-3 D 11 ug/1 1 U 0.25 J 1 U 0.45 J Chromium 7440-47-3 T - 10 ug/I 1 U 0.26 J 1 U 1 Cobalt 7440-48-4 D - - ug/I 1 U 0.5 U 1 U 0.5 U Cobalt 7440-48-4 T 4 1 ug/I 1 U 0.22 J 1 U 0.74 Copper 7440-50-8 D 1 2.7 - ug/I 3.39 J+ 0.52 J 1 U 0.23 J Copper 7440-50-8 T - 1000 ug/I 4.75 0.3 J 5.11 J+ 1.7 Iron 7439-89-6 D - ug/I 1 21 50 U 10 U 50 U Iron 7439-89-6 T - 300 ug/I 323 220 140 550 Lead 7439-92-1 D 0.54 ug/I 1 U 0.22 1 U 0.1 U Lead 7439-92-1 T - 15 ug/I 1 U 0.06 J 1 U 0.83 Magnesium 7439-95-4 T - ug/l 7240 6680 13500 14300 Manganese 7439-96-5 D I - ug/I 16 59 35 5 U Manganese 7439-96-5 T - 50 ug/I 9 140 154 230 Mercury 7439-97-6 T 0.012 1 ug/I I 0.0011 J+ 0.00778 0.000949 J+ 0.0011 J+ Methane 74-82-8 N - - ug/I 10 UJ 15 10 UJ 16.4 Molybdenum 7439-98-7 D - ug/I 9.11 10.8 7.62 9.4 Molybdenum 7439-98-7 T 2000 ug/I 9.36 9.7 7.65 9.8 Nickel 7440-02-0 D 16 - ug/I 1.2 1.6 1 U 0.7 Nickel 7440-02-0 T I - 100 ug/I 2.5 1.6 1.16 1.6 Potassium 7440-09-7 T - ug/I 3090 5540 4690 5840 Selenium 7782-49-2 D - - ug/I 1 2.32 1.9 1 U 0.36 J Selenium 7782-49-2 T 5 20 ug/I 2.87 2 1 U 0.45 J Sodium 7440-23-5 T - - ug/I 11500 8890 17000 18700 Strontium 7440-24-6 D - ug/I 322 290 883 1000 Strontium 7440-24-6 T 40000 ug/I 320 300 895 1100 Thallium 7440-28-0 D I - - ug/I 0.2 U 0.021 J 0.2 U 0.017 J Thallium 7440-28-0 T 0.47 0.2 ug/I 0.2 U 0.019 J 0.2 U 0.035 J Vanadium 7440-62-2 D - ug/I 4.94 2.4 0.701 1.1 Vanadium 7440-62-2 T - 0.3 ug/I 6.65 2.5 0.947 2.7 Zinc 7440-66-6 D 36 ug/I 34 J+ 10 U 18 J+ 10 U Zinc 7440-66-6 T - 1000 ug/I 212 10 U 10 16 Total Dissolved Solids TDS N 500000 ug/I 140000 136000 270000 290000 Total Organic Carbon TOC N ug/I 3800 4500 2100 1600 Total Suspended Solids TSS N ug/I 1 16000 3500 32000 35200 Alkalinity, CO3 ALK-CO3 N ug/I 11000 5000 U 10000 U 5000 U Alkalinity, HCO3 ALK-HCO3 N ug/I 23000 45400 100000 114000 Alkalinity, lab ALK-LAB N ug/I 37000 45400 100000 114000 Chloride 16887-00-6 N 230000 250000 ug/I 11000 8900 13000 14500 Nitrite as N 14797-65-0 N - 1000 ug/I 29 - 132 - Nitrogen, NO2 plus NO3 NO2-NO3 N - ug/I - - - 210 J- Sulfate 14808-79-8 N 250000 ug/I 1 53000 40200 90000 90300 Sulfide 18496-25-8 N - ug/I 100 U 100 U 100 U 100 U Dissolved Oxygen DO N mg/I - 2.5 - 7.8 Temperature TEMP N - Deg C 27.4 28.5 pH PH N 6 9 6.5 8.5 SU 7.3 7.6 Turbidity, field TURB N - - NTU 5.61 17.9 Specific Conductivity (field) SC I N PS/cm 219.1 453.9 Oxidation Reduction Potential ORP I N mV 125.7 90.3 Page 1 of 2 Table 2-4 Ash Basin Water Analytical Results - Round 1 and Round 2 Location: Event: Sample Date: Sample Type Code: Sample Name/ID: SW-1 SW-1 SW-9 SW-9 Round 1 Round 2 Round 1 Round 2 5/27/2015 9/11/2015 5/27/2015 9/11/2015 N N N N SW-1 DR-SW-1-NS-3Q15 SW-9 DR-SW-9-NS-3Q15 Constituent CAS RN I Fractio I SWQS Criteria I NCDEQ 02B I GWQS Criteria I NCDEQ 02L I Unit Notes: pm = micron pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mg/L = milligrams per liter my = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective January 2015) 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 2 of 2 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: BG-1 D BG-1 D BG-5D BG-5D BG-5D BG-5D BG-5S BG-5S Round 3 Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 11/16/2015 12/15/2015 6/23/2015 9/9/2015 11/16/2015 12/15/2015 6/24/2015 9/9/2015 N N N N N N N N DR-BG-ID-NS-4Q15-1 DR-BG-1D-NS-4Q15-2 BG-5D DR-BG-5D-NS-3Q15 DR-BG-5D-NS-4Q15-1 DR-BG-5D-NS-4Q15-2 BG-5S DR-BG-5S-NS-3015 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Aluminum 7429-90-5 D /L 1600 700 100 U 100 U 100 U 100 U 100 U 100 U Aluminum 7429-90-5 T /L 1000 760 60 J 220 100 U 100 U 590 720 Antimony 7440-36-0 D /L 0.3 J 0.46 J 0.5 U 0.50 U 0.5 U 0.5 U 0.5 U 0.50 U Antimony 7440-36-0 T 1 IMAC Ng/L 0.46 J 0.6 0.5 U 0.50 U 0.5 U 0.5 U 0.5 U 0.50 U Arsenic 7440-38-2 D /L 2.1 2.2 0.17 J+ 0.50 U 0.5 U 0.5 U 0.5 U 0.50 U Arsenic 7440-38-2 T 10 02L /L 2.4 2.3 0.5 U 0.50 U 0.5 U 0.5 U 0.28 J 0.29 J Barium 7440-39-3 D /L 3 J 5 U 24 19 17 15 10 12 Barium 7440-39-3 T 700 02L /L 5 U 5 U 29 22 16 16 21 22 Beryllium 7440-41-7 D /L 0.2 U 0.2 U 0.15 J 0.20 U 0.2 U 0.2 U 0.2 U 0.20 U Beryllium 7440-41-7 T 4 IMAC /L 0.2 U 0.2 U 0.2 U 0.20 U 0.2 U 0.2 U 0.087 J 0.20 U Boron 7440-42-8 D /L 58 65 50 U 50 U 50 U 50 U 50 U 50 U Boron 7440-42-8 T 700 02L /L 69 58 50 U 50 U 50 U 50 U 50 U 50 U Cadmium 7440-43-9 D /L 0.08 U 0.08 U 0.032 J+ 0.080 U 0.08 U 0.08 U 0.08 U 0.080 U Cadmium 7440-43-9 T 2 02L /L 0.08 U 0.08 U 0.08 U 0.080 U 0.08 U 0.08 U 0.08 U 0.080 U Calcium 7440-70-2 T /L 66800 63600 32400 30700 25600 28300 17100 21000 Chromium 7440-47-3 D /L 20.4 14.7 0.28 J+ 0.50 U 0.72 J+ 0.29 J 1.2 J+ 0.29 J Chromium 7440-47-3 T 10 02L Ng/L 25.3 16.1 0.38 J+ 0.47 J 0.48 J+ 0.18 J+ 2.6 0.89 Cobalt 7440-48-4 D /L 0.32 J 0.3 J 0.91 0.30 J 0.5 U 0.5 U 0.5 U 0.50 U Cobalt 7440-48-4 T 1 IMAC Ng/L 0.38 J 0.33 J 1 0.41 J 0.5 U 0.5 U 2.1 0.91 Copper 7440-50-8 D /L 3.8 J+ 3.1 0.36 J+ 0.47 J 9.8 J+ 9.4 0.28 J+ 0.39 J Copper 7440-50-8 T 1000 02L /L 2.6 2.3 J+ 1 U 0.36 J 1 U 1 U 2 J+ 0.45 J Iron 7439-89-6 D /L 50 U 50 U 150 220 50 U 50 U 50 U 50 U Iron 7439-89-6 T 300 02L Ng/L 31 J 50 U 240 510 81 50 U 890 1100 Lead 7439-92-1 D /L 0.058 J+ 0.19 0.1 U 0.049 J 1.2 J+ 1 0.1 UJ 0.10 U Lead 7439-92-1 T 15 02L /L 0.1 U 0.047 J+ 0.078 J 0.27 0.08 J 0.055 J 1.7 0.76 Magnesium 7439-95-4 T /L 74.7 J 237 17400 16700 14900 15900 11500 14000 Manganese 7439-96-5 D /L 5 U 5 U 920 540 110 120 21 20 Manganese 7439-96-5 T 50 02L Ng/L 1 5 U 5 U 910 580 100 130 110 120 Mercury 7439-97-6 D /L 0.2 U 0.2 U 0.2 U 0.20 U 0.2 U 0.2 U 0.2 U 0.20 U Mercury 7439-97-6 T 1 02L /L 0.2 U 0.2 U 0.2 U 0.20 U 0.2 U 0.2 U 0.2 U 0.20 U Methane 74-82-8 N /L 2.2 J+ 1.5 J+ 5.4 J+ 10.0 UJ 1.4 J+ 2.3 J+ 3.6 J+ 1.4 J+ Molybdenum 7439-98-7 D /L 13.2 14.9 1.2 0.58 0.32 J 0.15 J 0.5 U 0.50 U Molybdenum 7439-98-7 T /L 18 16.5 1.2 0.56 0.3 J 0.5 U 0.11 J 0.50 U Nickel 7440-02-0 D /L 0.18 J 0.37 J 2.3 J+ 0.17 J 0.46 J 0.39 J 0.8 J+ 0.42 J Nickel 7440-02-0 T 100 02L /L 0.4 J 1.9 J+ 0.52 J+ 0.36 J 0.24 J 0.5 U 2.4 J+ 1.1 Potassium 7440-09-7 T /L 6500 6360 3170 J 5000 U 5000 U 5000 U 5000 U 50001.1 Selenium 7782-49-2 D /L 0.88 0.88 0.5 U 0.50 U 0.5 U 0.5 U 0.5 U 0.50 U Selenium 7782-49-2 T 20 02L /L 1.2 0.9 0.5 U 0.50 U 0.5 U 0.5 U 0.5 U 0.50 U Sodium 7440-23-5 T /L 32400 32900 15700 16400 16500 16700 16000 17900 Strontium 7440-24-6 D /L 120 98 250 270 260 230 200 230 Strontium 7440-24-6 T /L 100 110 300 280 230 250 220 240 Thallium 7440-28-0 D /L 0.1 U 0.1 U 0.1 U 0.10 U 0.1 U 0.1 U 0.1 U 0.10 U Thallium 7440-28-0 T 0.2 IMAC Ng/L 0.017 J 0.017 J 0.1 U 0.10 U 0.1 U 0.1 U 0.019 J 0.10 U Vanadium 7440-62-2 D /L 39.3 46.1 1 U 1.0 U 1 U 1 U 1 U 1.0 U Vanadium 7440-62-2 T 0.3 IMAC Ng/L 45.8 43 1 U 0.46 J 1 U 1 U 2.6 0.82 J Zinc 7440-66-6 D /L 12 10 U 10 U 3.1 J 10 U 10 U 10 UJ 5.5 J Zinc 7440-66-6 T 1000 02L /L 10 U 10 J+ 10 U 10 U 3.3 J+ 6 J 5.1 J+ 5.1 J Total Dissolved Solids TDS N 500000 02L /L 309000 338000 214000 212000 164000 204000 175000 191000 Total Organic Carbon TOC N /L 1800 2000 620 J 1000 U 1000 U 23800 570 J 1000 U Total Suspended Solids TSS N /L 2500 U 10800 2900 5200 2500 U 2500 U 62900 Alkalinity, CO3 ALK-CO3 N /L 81600 85000 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Alkalinity, HCO3 ALK-HCO3 N /L 74200 5000 U 133000 126000 115000 125000 77600 80800 Alkalinity, lab ALK-LAB N /L 156000 117000 133000 126000 115000 125000 77600 80800 Chloride 16887-00-6 N 250000 02L /L 6400 6600 5700 5400 6000 6000 6900 6700 Nitrite as N 14797-65-0 N 1000 02L /L Nitro en, NO2 plus NO3 NO2-NO3 N /L 310 300 26 J+ 140 180 120 400 J+ 360 Sulfate 14808-79-8 N 250000 02L /L 86800 92400 39400 34900 34500 34300 41300 38700 Sulfide 18496-25-8 N /L 100 U 100 U 100 U 100 U 100 U 100 U 100 U 100 U Arsenic 7440-38-2 T 10 02L /L Iron 7439-89-6 T 300 02L Ng/L Manganese 7439-96-5 D /L Manganese 7439-96-5 T 50 02L Ng/L As III 7784-46-5 T /L As V 10103-60-3 T /L Chromium VI 18540-29-9 T 0.07 DHHS Ng/L 24.9 16.9 0.024 J+ 0.03 J Fe II 1345-25-1 T /L Fe III 1309-37-1 T /L Mn II 1344-43-0 T /L Page 1 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: BG-1 D BG-1 D BG-5D BG-5D BG-5D BG-5D BG-5S BG-5S Round 3 Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 11/16/2015 12/15/2015 6/23/2015 9/9/2015 11/16/2015 12/15/2015 6/24/2015 9/9/2015 N N N N N N N N DR-BG-ID-NS-4Q15-1 DR-BG-1D-NS-4Q15-2 BG-5D DR-BG-5D-NS-3Q15 DR-BG-5D-NS-4Q15-1 DR-BG-5D-NS-4Q15-2 BG-5S DR-BG-5S-NS-3015 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Mn IV 1313-13-9 T /L Se IV 10102-18-8 T /L Se VI 13410-01-0 T /L Uranium, Natural 7440-61-1 T /L 1.13 0.135 J Radium-226 13982-63-3 T Ci/L 0.897 1.22 Radium-228 15262-20-1 T Ci/L 1.46 3 U Uranium-233 13968-55-3 T Ijq1L 1 0.05 U 0.05 U Uranium-234 13966-29-5 T /L 0.05 U 0.05 U Uranium-236 13982-70-2 T /L 0.05 U 0.05 U Dissolved Oxygen DO N m /L 3.89 0.27 0.3 0.28 1.1 Temperature TEMP N Deg C 13.1 18.7 21.3 16 16.8 pH PH N 6.5 8.5 02L SU 11.4 7.06 7 6.69 6.2 Turbidity, field TURB N NTU 0.85 3.81 7 1.05 4 Specific Conductivityfield SC N PS/cm 632 358 344.2 315.2 271.3 Oxidation Reduction Potential ORP N mV 1 37.3 218.2 1 -52.3 1 54.9 1 202.3 GW Depth TOC GW DEPTH-TOCI N I I ft 1 16.06 8.82 1 7.15 1 10.22 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mg/L = milligrams per liter mV = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective January 2015) 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 2 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: BG-5S BG-5S GWA-12D GWA-12D GWA-12D GWA-12D GWA-12S GWA-12S Round 3 Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 11/16/2015 12/15/2015 6/4/2015 9/9/2015 11/19/2015 12/15/2015 6/4/2015 9/11/2015 N N N N N N N N DR-BG-5S-NS-4Q15-1 DR-BG-5S-NS-4Q15-2 GWA-12D DR-GWA-12D-NS-3Q15 DR-GWA-12D-NS-4Q15-1DR-GWA-I2D-NS-4Q15-i GWA-12S DR-GWA-I2S-NS-3Q15 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Aluminum 7429-90-5 D wqlL 1 140 92 J 298 100 U 100 U 100 U 21 100 U Aluminum 7429-90-5 T /L 130 100 U 5 U 81 J 100 51 J 190 350 Antimony 7440-36-0 D /L 0.5 U 0.5 U 1 U 0.16 J 0.18 J 0.5 U 1 U 0.5 U Antimony 7440-36-0 T 1 IMAC Ng/L 0.5 U 0.5 U 1 U 0.19 J 0.18 J 0.5 U 1 U 0.5 U Arsenic 7440-38-2 D /L 0.5 U 0.5 U 2.54 2.3 2.1 2.1 1 U 0.14 J Arsenic 7440-38-2 T 10 02L /L 0.5 U 0.5 U 3.71 2.7 2.2 2.2 1 U 0.16 J Barium 7440-39-3 D /L 11 10 23 16 22 19 53 46 Barium 7440-39-3 T 700 02L /L 12 11 17 16 22 21 55 54 Beryllium 7440-41-7 D /L 0.2 U 0.2 U 1 U 0.2 U 0.2 U 0.2 U 1 U 0.2 U Beryllium 7440-41-7 T 4 IMAC /L 0.2 U 0.2 U 1 U 0.2 U 0.2 U 0.2 U 1 U 0.2 U Boron 7440-42-8 D /L 50 U 50 U 50 U 50 U 50 U 50 U 50 U 50 U Boron 7440-42-8 T 700 02L /L 50 U 50 U 50 U 50 U 50 U 50 U 50 U 50 U Cadmium 7440-43-9 D /L 0.08 U 0.08 U 1 U 0.08 U 0.08 U 0.08 U 1 U 0.08 U Cadmium 7440-43-9 T 2 02L /L 0.08 U 0.08 U 1 U 0.08 U 0.08 U 0.08 U 1 U 0.08 U Calcium 7440-70-2 T /L 17600 17200 51700 54700 52000 48900 12200 10100 Chromium 7440-47-3 D /L 0.54 J+ 0.62 1 U 0.23 J 0.28 J 0.17 J 1 U 0.48 J Chromium 7440-47-3 T 10 02L Ng/L 1 J+ 0.73 J+ 2.87 0.43 J+ 0.42 J 0.21 J 1.01 1.4 Cobalt 7440-48-4 D /L 0.5 U 0.5 U 1 U 0.31 J 0.16 J 0.5 U 1 U 0.24 J Cobalt 7440-48-4 T 1 IMAC Ng/L 0.5 U 0.5 U 1 U 0.35 J 0.13 J 0.5 U 1 U 0.49 J Copper 7440-50-8 D /L 9.6 J+ 1.8 3.32 1 U 1 U 1 U 1 UJ 0.57 J Copper 7440-50-8 T 1000 02L /L 1 U 1 U 3.9 J+ 0.52 J 0.42 J 0.26 J 1 U 1.3 Iron 7439-89-6 D /L 50 U 35 J 386 30 J 62 97 10 U 50 U Iron 7439-89-6 T 300 02L Ng/L 140 27 J 54 100 140 130 185 460 Lead 7439-92-1 D /L 1.1 J+ 0.18 1 U 0.16 0.063 J 0.1 U 1 U 0.1 U Lead 7439-92-1 T 15 02L /L 0.14 0.05 J 1.74 0.081 J 0.13 0.1 U 1 U 0.24 Magnesium 7439-95-4 T /L 11400 11300 16400 18000 16700 16200 5960 6070 Manganese 7439-96-5 D /L 3.2 J 5 U 60 37 36 34 102 31 Manganese 7439-96-5 T 50 02L Ng/L 16 5 U 49 40 J+ 37 36 150 45 Mercury 7439-97-6 D /L 0.2 U 0.2 U 0.05 U 0.2 U 0.2 U 0.2 U 0.05 U 0.2 U Mercury 7439-97-6 T 1 02L /L 0.2 U 0.2 U 0.05 U 0.2 U 0.2 U 0.2 U 0.05 U 0.2 U Methane 74-82-8 N /L 2.5 J+ 2.3 J+ 10 U 1.8 J+ 1.9 J+ 4.1 J+ 10 U 1.8 J+ Molybdenum 7439-98-7 D /L 0.5 U 0.5 U 1.26 0.82 0.63 0.42 J 1 U 0.5 U Molybdenum 7439-98-7 T /L 0.5 U 0.5 U 1.52 0.8 0.56 0.34 J 1 U 0.11 J Nickel 7440-02-0 D /L 0.58 0.58 1 U 3 1.2 0.68 2.14 2.9 Nickel 7440-02-0 T 100 02L /L 0.59 0.64 3.37 3.4 0.77 0.33 J 3.09 3.4 Potassium 7440-09-7 T /L 5000 U 5000 U 1000 5000 U 5000 U 5000 U 1690 5000 U Selenium 7782-49-2 D /L 0.5 U 0.5 U 1 U 0.5 U 0.5 U 0.5 U 1 U 0.5 U Selenium 7782-49-2 T 20 02L /L 0.5 U 0.5 U 1 U 0.5 U 0.5 U 0.5 U 1 U 0.5 U Sodium 7440-23-5 T /L 16700 16300 9470 9730 9060 8410 7920 7010 Strontium 7440-24-6 D /L 210 180 533 520 580 520 140 140 Strontium 7440-24-6 T /L 200 200 526 520 580 560 140 140 Thallium 7440-28-0 D /L 0.1 U 0.1 U 0.2 U 0.1 U 0.038 J 0.1 U 0.2 U 0.1 U Thallium 7440-28-0 T 0.2 IMAC Ng/L 0.1 U 0.1 U 0.2 U 0.1 U 0.1 U 0.1 U 0.2 U 0.1 U Vanadium 7440-62-2 D /L 1 U 1 U 2.75 3 3.7 3.2 0.3 U 0.7 J Vanadium 7440-62-2 T 0.3 IMAC Ng/L 0.31 J 0.3 J 5.65 3.7 3.1 2.3 0.3 U 0.93 J Zinc 7440-66-6 D /L 4.4 J 4.4 J 14 2.9 J 16 8.6 J 6 5.1 J Zinc 7440-66-6 T 1000 02L /L 7.2 J+ 10 U 5 UJ 12 10 U 3.7 J+ 5 UJ 5.9 J Total Dissolved Solids TDS N 500000 02L /L 151000 187000 250000 257000 265000 261000 110000 105000 Total Organic Carbon TOC N /L 25800 550 J 202 J+ 1000 U 1000 U 1000 U 697 J+ 710 J Total Suspended Solids TSS N /L 2500 U 2500 U 16000 7200 2600 U 2500 U 5000 U 3000 Alkalinity, CO3 ALK-CO3 N pq1L 5000 U 5000 U 10000 U 5000 U 5000 U 5000 U 10000 U 5000 U Alkalinity, HCO3 ALK-HCO3 N /L 75100 70600 190000 196000 192000 174000 28000 11900 Alkalinity, lab ALK-LAB N /L 75100 70600 190000 196000 192000 174000 28000 11900 Chloride 16887-00-6 N 250000 02L /L 6800 6900 3900 3300 3700 3800 3000 1700 Nitrite as N 14797-65-0 N 1000 02L /L 178 808 Nitro en, NO2 plus NO3 NO2-NO3 N /L 440 430 170 86 83 580 Sulfate 14808-79-8 N 250000 02L /L 37600 36700 16000 15300 18700 18500 41000 46100 Sulfide 18496-25-8 N /L 100 U 100 U 500 U 100 U 100 U 100 U 100 U 100 U Arsenic 7440-38-2 T 10 02L /L Iron 7439-89-6 T 300 02L Ng/L Manganese 7439-96-5 D /L Manganese 7439-96-5 T 50 02L Ng/L As III 7784-46-5 T /L As V 10103-60-3 T /L Chromium VI 18540-29-9 T 0.07 DHHS Ng/L 0.35 0.41 0.021 J Fe II 1345-25-1 T /L Fe III 1309-37-1 T /L Mn II 1344-43-0 1 T I pg/L Page 3 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: BG-5S BG-5S GWA-12D GWA-12D GWA-12D GWA-12D GWA-12S GWA-12S Round 3 Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 11/16/2015 12/15/2015 6/4/2015 9/9/2015 11/19/2015 12/15/2015 6/4/2015 9/11/2015 N N N N N N N N DR-BG-5S-NS-4Q15-1 DR-BG-5S-NS-4Q15-2 GWA-12D DR-GWA-12D-NS-3Q15 DR-GWA-12D-NS-4Q15-1DR-GWA-I2D-NS-4Q15-i GWA-12S DR-GWA-I2S-NS-3Q15 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Mn IV 1313-13-9 T /L Se IV 10102-18-8 T /L Se VI 13410-01-0 T /L Uranium, Natural 7440-61-1 T /L Radium-226 13982-63-3 T Ci/L Radium-228 15262-20-1 T Ci/L Uranium-233 13968-55-3 T Ijq1L Uranium-234 13966-29-5 T /L Uranium-236 13982-70-2 T /L Dissolved Oxygen DO N m /L 0.88 0.47 0.44 0.5 1.2 4.85 5.34 Temperature TEMP N Deg C 16.1 17.7 20.7 17.8 16.6 18.3 23.4 pH PH N 6.5 8.5 02L SU 6.2 7.47 7.4 7.4 7.6 5.45 5.6 Turbidity, field TURB N NTU 3.07 8.35 4.9 1 7.13 1 2.5 1 2.38 1 87.1 Specific Conductivityfield SC N S/cm 256.4 396.7 526 385.3 371.6 151.3 257.4 Oxidation Reduction Potential ORP N mV 158.3 -81.4 -19.7 -69.7 -79.9 321 242.7 GW Depth TOC GW DEPTH-TOCI N I I ft 1 7.2 34.69 19.1 16.76 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mg/L = milligrams per liter mV = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective Ja 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 4 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-12S GWA-9D GWA-9D GWA-9D GWA-9D GWA-9S GWA-9S GWA-9S Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 Round 3 12/18/2015 6/15/2015 9/9/2015 11/16/2015 12/15/2015 6/19/2015 9/9/2015 11/16/2015 N N N N N N N N DR-GWA-12S-NS-4Q15-2 GWA-9D DR-GWA-9D-NS-3Q15 DR-GWA-9D-NS-4Q15-1 DR-GWA-9D-NS-4Q15-2 GWA-9S DR-GWA-9S-NS-3Q15 DR-GWA-9S-NS-4Q15-1 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Aluminum 7429-90-5 D /L 100 U 10 U 100 U 100 U 100 U 100 U 100 U 100 U Aluminum 7429-90-5 T /L 560 1270 100 U 210 100 U 4300 630 300 Antimony 7440-36-0 D /L 0.2 J 0.5 U 0.5 U 0.5 U 0.5 U 0.19 J 0.5 U 0.5 U Antimony 7440-36-0 T 1 IMAC Ng/L 0.19 J 0.5 U 0.5 U 0.5 U 0.5 U 0.22 J 0.5 U 0.5 U Arsenic 7440-38-2 D /L 0.5 U 2.1 0.69 0.77 0.74 0.5 U 0.5 U 0.5 U Arsenic 7440-38-2 T 10 02L /L 0.48 J 2.3 0.67 0.84 0.84 0.63 0.5 U 0.5 U Barium 7440-39-3 D /L 34 24 20 14 12 5 U 10 11 Barium 7440-39-3 T 700 02L /L 41 23 21 15 13 42 17 14 Beryllium 7440-41-7 D /L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.077 J 0.21 0.18 J Beryllium 7440-41-7 T 4 IMAC /L 0.081 J 0.085 J 0.2 U 0.2 U 0.2 U 0.67 0.23 0.21 Boron 7440-42-8 D /L 50 U 50 U 50 U 50 U 50 U 50 U 50 U 50 U Boron 7440-42-8 T 700 02L /L 50 U 50 U 50 U 38 J 50 U 50 U 50 U 50 U Cadmium 7440-43-9 D /L 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U 0.038 J 0.027 J Cadmium 7440-43-9 T 2 02L /L 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U 0.036 J 0.034 J 0.053 J Calcium 7440-70-2 T /L 7210 17700 14200 8270 7150 1050 584 835 J+ Chromium 7440-47-3 D /L 0.65 J+ 0.25 J 0.34 J 0.5 U 0.5 U 0.27 J+ 0.57 0.49 J+ Chromium 7440-47-3 T 10 02L Ng/L 3.4 2.9 1.2 J+ 2.5 J+ 1.4 J+ 3.5 0.97 J+ 0.82 J+ Cobalt 7440-48-4 D /L 0.26 J 0.51 0.36 J 0.76 0.81 1.5 4.5 5.5 Cobalt 7440-48-4 T 1 IMAC Ng/L 0.47 J 1.2 0.38 J 0.9 0.88 9.3 4.7 6.7 Copper 7440-50-8 D /L 2.8 J+ 1 U 1.9 0.6 J+ 0.72 J+ 1 UJ 5 9.2 J+ Copper 7440-50-8 T 1000 02L /L 1.4 J+ 2.1 J+ 1 U 0.4 J 0.47 J 4.5 J+ 1.4 1.5 Iron 7439-89-6 D /L 50 U 1390 1800 2000 2100 50 U 50 U 50 U Iron 7439-89-6 T 300 02L Ng/L 890 3290 2000 2600 2300 5100 750 290 Lead 7439-92-1 D /L 0.23 0.1 U 0.13 0.085 J+ 0.12 J+ 0.1 U 0.51 0.95 J+ Lead 7439-92-1 T 15 02L /L 0.35 0.67 J+ 0.1 U 0.32 0.14 4.3 0.38 0.39 Magnesium 7439-95-4 T /L 4370 3050 2620 2260 2030 890 558 753 Manganese 7439-96-5 D /L 27 590 690 660 480 36 100 140 Manganese 7439-96-5 T 50 02L Ng/L 37 640 720 620 530 220 110 140 Mercury 7439-97-6 D /L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Mercury 7439-97-6 T 1 02L /L 0.2 U 0.072 J 0.2 U 0.2 U 0.2 U 0.073 J+ 0.2 U 0.2 U Methane 74-82-8 N /L 3.2 J+ 10 U 3 J+ 2.6 J+ 1.9 J+ 2.3 J+ 2.7 J+ 1.7 J+ Molybdenum 7439-98-7 D /L 0.5 U 0.27 J 0.12 J 0.21 J 0.5 U 0.5 U 0.5 U 0.5 U Molybdenum 7439-98-7 T /L 0.1 J 0.52 0.12 J 0.27 J 0.5 U 0.3 J 0.5 U 0.5 U Nickel 7440-02-0 D /L 2.8 1.2 J+ 0.98 2.4 2 0.66 J+ 2.9 3.1 Nickel 7440-02-0 T 100 02L /L 3.7 3.2 J+ 1.2 3.7 2.5 6.1 J+ 2.9 3.9 Potassium 7440-09-7 T /L 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Selenium 7782-49-2 D /L 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U Selenium 7782-49-2 T 20 02L /L 0.26 J 0.5 U 0.5 U 0.5 U 0.5 U 0.56 0.5 U 0.5 U Sodium 7440-23-5 T /L 5630 6140 5510 5000 4850 J 6980 5390 5960 Strontium 7440-24-6 D /L 94 63 52 33 25 3.1 J 8.1 9.5 Strontium 7440-24-6 T /L 100 64 55 31 27 21 9.1 9.3 Thallium 7440-28-0 D /L 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U Thallium 7440-28-0 T 0.2 IMAC Ng/L 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.034 J 0.1 U 0.1 U Vanadium 7440-62-2 D /L 0.42 J 1 U 1 U 1 U 1 U 1 U 1 U 1 U Vanadium 7440-62-2 T 0.3 IMAC Ng/L 2.4 J+ 1.8 1 U 0.38 J 0.39 J 5.1 0.59 J 0.65 J Zinc 7440-66-6 D /L 16 3.9 J+ 10 U 8.7 J 3.1 J 5.1 J+ 12 13 Zinc 7440-66-6 T 1000 02L /L 6.9 J 8.9 J+ 10 U 12 J+ 16 20 16 11 J+ Total Dissolved Solids TDS N 500000 02L /L 87000 113000 91000 42000 90000 161000 50000 36000 Total Organic Carbon TOC N /L 1300 1000 U 17500 1000 U 1000 U 14200 1000 U 1000 U Total Suspended Solids TSS N /L 2500 U 16100 5000 U 5800 5900 239000 30200 6900 Alkalinity, CO3 ALK-CO3 N /L 5000 U 10000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Alkalinity, HCO3 ALK-HCO3 N /L 6000 57000 47600 32000 25400 9100 5700 4900 J Alkalinity, lab ALK-LAB N /L 6000 57000 47600 32000 25400 9100 5700 4900 J Chloride 16887-00-6 N 250000 02L /L 2700 2000 2100 2900 3100 4200 4000 4100 Nitrite as N 14797-65-0 N 1000 02L /L Nitro en, NO2 plus NO3 NO2-NO3 N /L 790 20 U 20 U 20 U 20 U 48 36 31 Sulfate 14808-79-8 N 250000 02L /L 32400 4200 4300 6000 6000 650 J 2700 6400 Sulfide 18496-25-8 N /L 100 U 500 U 100 U 100 U 100 U 100 U 100 U 100 U Arsenic 7440-38-2 T 10 02L /L Iron 7439-89-6 T 300 02L Ng/L Manganese 7439-96-5 D /L Manganese 7439-96-5 T 50 02L Ng/L As III 7784-46-5 T /L As V 10103-60-3 T /L Chromium VI 18540-29-9 T 0.07 DHHS Ng/L 0.26 0.03 U 0.03 U 0.083 Fe II 1345-25-1 T /L Fe III 1309-37-1 T /L Mn II 1344-43-0 1 T /L Page 5 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-12S GWA-9D GWA-9D GWA-9D GWA-9D GWA-9S GWA-9S GWA-9S Round 4 Round 1 Round 2 Round 3 Round 4 Round 1 Round 2 Round 3 12/18/2015 6/15/2015 9/9/2015 11/16/2015 12/15/2015 6/19/2015 9/9/2015 11/16/2015 N N N N N N N N DR-GWA-12S-NS-4Q15-2 GWA-9D DR-GWA-9D-NS-3Q15 DR-GWA-9D-NS-4Q15-1 DR-GWA-9D-NS-4Q15-2 GWA-9S DR-GWA-9S-NS-3Q15 DR-GWA-9S-NS-4Q15-1 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Mn IV 1313-13-9 T /L Se IV 10102-18-8 T /L Se VI 13410-01-0 T /L Uranium, Natural 7440-61-1 T /L Radium-226 13982-63-3 T Ci/L Radium-228 15262-20-1 T Ci/L Uranium-233 13968-55-3 T /L Uranium-234 13966-29-5 T /L Uranium-236 13982-70-2 T /L Dissolved Oxygen DO N m /L 0.16 0.12 0.31 0.5 4.17 4.52 1.61 Temperature TEMP N Deg C 26.1 16.7 18.2 14.5 23.8 19 16.3 pH PH N 6.5 8.5 02L SU 6.4 6.2 6.1 5.8 5.55 5.1 5.3 Turbidity, field TURB N NTU 16.28 0.9 9.97 1.9 235.9 1 7.2 1 9.24 Specific Conductivityfield SC NPS/cm 141.9 157.4 89.6 84.4 39.3 48.1 45.2 Oxidation Reduction Potential ORP N mV 90.8 69.8 1.5 42 331.5 1 287 241.6 GW Depth TOC GW DEPTH-TOC N I ft 34.66 28.1 34.58 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mg/L = milligrams per liter mV = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective Ja 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 6 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-9S MW-23BR MW-23BR MW-23BR MW-23D MW-23D Round 4 Round 1 Round 2 Round 4 Round 1 Round 4 12/15/2015 6/1/2015 9/10/2015 12/15/2015 6/30/2015 12/15/2015 N N N N N N DR-GWA-9S-NS-4Q15-2 MW-23BR DR-MW-23BR-NS-3Q15 R-MW-23BR-NS-4Q15-: MW-23D DR-MW-23D-NS-4Q15-2 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Aluminum 7429-90-5 D /L 85 J 75 100 U 100 U 100 U 88 J Aluminum 7429-90-5 T /L 300 8 100 U 66 J 180 100 U Antimony 7440-36-0 D /L 0.5 U 1.16 0.50 U 0.5 U 0.5 U 0.5 U Antimony 7440-36-0 T 1 IMAC Ng/L 0.5 U 1.21 0.50 U 0.5 U 0.5 U 0.5 U Arsenic 7440-38-2 D /L 0.5 U 6.29 1.2 0.69 0.33 J 0.3 J Arsenic 7440-38-2 T 10 02L /L 0.5 U 6.36 1.1 0.65 0.27 J 0.33 J Barium 7440-39-3 D /L 11 132 120 110 94 72 Barium 7440-39-3 T 700 02L /L 14 136 120 120 80 16 Beryllium 7440-41-7 D /L 0.18 J 1 U 0.20 U 0.2 U 0.2 U 0.2 U Beryllium 7440-41-7 T 4 IMAC /L 0.19 J 1 U 0.20 U 0.2 U 0.2 U 0.2 U Boron 7440-42-8 D /L 50 U 50 U 28 J 32 J 50 U 50 U Boron 7440-42-8 T 700 02L /L 50 U 50 U 29 J 50 U 50 U 50 U Cadmium 7440-43-9 D /L 0.04 J 1 U 0.080 U 0.08 U 0.08 U 0.08 U Cadmium 7440-43-9 T 2 02L /L 0.037 J 1 U 0.080 U 0.08 U 0.08 U 0.08 U Calcium 7440-70-2 T /L 1130 53700 48500 54500 61100 59000 Chromium 7440-47-3 D /L 0.23 J+ 1 U 0.25 J 0.21 J 0.22 J 0.34 J Chromium 7440-47-3 T 10 02L Ng/L 0.58 J+ 1 U 0.50 U 0.5 U 0.26 J+ 1.5 Cobalt 7440-48-4 D /L 6.7 1 U 0.50 U 0.5 U 0.22 J 0.18 J Cobalt 7440-48-4 T 1 IMAC Ng/L 6.5 1 U 0.50 U 0.5 U 0.25 J 0.3 J Copper 7440-50-8 D /L 7.6 J+ 1 U 1.0 U 1 U 0.27 J+ 1.4 Copper 7440-50-8 T 1000 02L /L 1.8 8.46 1.2 0.27 J 0.88 J+ 0.87 J Iron 7439-89-6 D /L 44 J 57 1100 1100 J 50 U 69 Iron 7439-89-6 T 300 02L Ng/L 370 138 1000 1200 J 110 48 J Lead 7439-92-1 D /L 0.8 J+ 1 U 0.10 U 0.1 U 0.1 U 0.1 U Lead 7439-92-1 T 15 02L /L 0.25 1 U 0.10 U 0.1 U 0.057 J+ 0.24 Magnesium 7439-95-4 T /L 896 18900 18900 19400 13600 13000 Manganese 7439-96-5 D /L 140 31 30 27 300 110 Manganese 7439-96-5 T 50 02L Ng/L 160 32 29 30 280 25 Mercury 7439-97-6 D /L 0.2 U 0.05 U 0.20 U 0.2 U 0.2 U 0.2 U Mercury 7439-97-6 T 1 02L /L 0.2 U 0.05 U 0.20 UJ 0.2 U 0.2 U 0.2 U Methane 74-82-8 N /L 1.9 J+ 10 UJ 55.7 45.5 1.8 J+ 55.5 Molybdenum 7439-98-7 D /L 0.5 U 2.51 1.6 1.1 0.57 0.48 J Molybdenum 7439-98-7 T /L 0.5 U 2.52 1.6 1.1 0.41 J 0.12 J Nickel 7440-02-0 D /L 3.7 1 U 0.50 U 0.25 J 0.47 J 1.5 Nickel 7440-02-0 T 100 02L /L 3.9 1 U 0.50 U 0.47 J 0.49 J+ 1 Potassium 7440-09-7 T /L 5000 U 654 5000 U 5000 U 5000 U 5000 U Selenium 7782-49-2 D /L 0.5 U 1 U 0.50 U 0.5 U 0.5 U 0.5 U Selenium 7782-49-2 T 20 02L /L 0.5 U 1 U 0.50 U 0.5 U 0.5 U 0.5 U Sodium 7440-23-5 T /L 6460 13200 15200 14000 7300 6400 Strontium 7440-24-6 D /L 13 1930 2100 1700 890 480 Strontium 7440-24-6 T /L 15 1940 1900 1900 740 110 Thallium 7440-28-0 D /L 0.1 U 0.2 U 0.10 U 0.1 U 0.1 U 0.023 J Thallium 7440-28-0 T 0.2 IMAC Ng/L 0.1 U 0.55 0.10 U 0.1 U 0.1 U 0.1 U Vanadium 7440-62-2 D /L 1 U 1.15 1.0 U 1 U 1 U 1 U Vanadium 7440-62-2 T 0.3 IMAC Ng/L 0.74 J 1.38 1.0 U 0.31 J 1 U 1.2 Zinc 7440-66-6 D /L 10 14 10 U 19 31 4.7 J Zinc 7440-66-6 T 1000 02L /L 16 7 10 U 16 J+ 27 2.6 J Total Dissolved Solids TDS N 500000 02L /L 36000 270000 266000 276000 252000 279000 Total Organic Carbon TOC N /L 1000 U 148 1000 U 29000 J 520 J 1000 U Total Suspended Solids TSS N /L 5900 5000 U 2500 U 2600 U 2500 U 3500 Alkalinity, CO3 ALK-CO3 N /L 5000 U 10000 U 5000 U 5000 U 5000 U 5000 U Alkalinity, HCO3 ALK-HCO3 N /L 7800 220000 203000 233000 205000 168000 Alkalinity, lab ALK-LAB N /L 7800 220000 203000 J- 233000 J 205000 168000 Chloride 16887-00-6 N 250000 02L /L 4200 3300 3800 4100 8000 J+ 5200 Nitrite as N 14797-65-0 N 1000 02L /L 10 U Nitro en, NO2 plus NO3 NO2-NO3 N /L 42 J+ 20 U 20 U 20 UJ 36 Sulfate 14808-79-8 N 250000 02L /L 7000 12000 8400 11000 29800 27700 Sulfide 18496-25-8 N /L 100 U 100 U 180 100 U 100 U 100 U Arsenic 7440-38-2 T 10 02L /L 0.58 0.5 U Iron 7439-89-6 T 300 02L Ng/L 516 100 Manganese 7439-96-5 D /L 31.4 193 Manganese 7439-96-5 T 50 02L Ng/L 32.2 J+ - 272 J+ As III 7784-46-5 T /L 0.456 J 0.2 U 0.5 U As V 10103-60-3 T /L 0.5 U 0.203 0.5 U Chromium VI 18540-29-9 T 0.07 DHHS Ng/L 0.027 J 0.014 J 0.089 J 1.1 Fe II 1345-25-1 T /L 476 J 20 U 46.6 J- Fe III 1309-37-1 T /L 20 U Mn II 1344-43-0 1 T /L 1 53.4 J Page 7 of 8 Table 2-5 Background Groundwater Analytical Results - Rounds 1, 2, 3, and 4 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-9S MW-23BR MW-23BR MW-23BR MW-23D MW-23D Round 4 Round 1 Round 2 Round 4 Round 1 Round 4 12/15/2015 6/1/2015 9/10/2015 12/15/2015 6/30/2015 12/15/2015 N N N N N N DR-GWA-9S-NS-4Q15-2 MW-23BR DR-MW-23BR-NS-3Q15 R-MW-23BR-NS-4Q15-: MW-23D DR-MW-23D-NS-4Q15-2 Constituent CAS RN Fraction Criteria Min (range only) NCDEQ 02L GWQS, IMACs, DHHS Criteria Source Unit Mn IV 1313-13-9 T /L 311 J Se IV 10102-18-8 T /L 2 UJ 0.5 U 2 U Se VI 13410-01-0 T /L 2 UJ 0.5 UJ 2 U Uranium, Natural 7440-61-1 T /L Radium-226 13982-63-3 T Ci/L Radium-228 15262-20-1 T Ci/L Uranium-233 13968-55-3 T /L Uranium-234 13966-29-5 T /L Uranium-236 13982-70-2 T /L Dissolved Oxygen DO N m /L 1.6 3.05 0.16 0.41 1.44 1.86 Temperature TEMP N Deg C 19.5 21.8 21.9 12.1 19.8 14.8 pH PH N 6.5 8.5 02L SU 5.3 7.45 7.5 7.5 6.89 5.95 Turbidity, field TURB N NTU 8.2 0.22 6.1 1.2 51.69 9.73 Specific Conductivityfield SC NPS/cm 54.9 474.3 716 451.8 438.2 385.3 Oxidation Reduction Potential ORP N mV 1 211.3 6 -146.7 1 -141.6 146.5 68.8 GW Depth TOC GW DEPTH-TOCI N I I ft 1 28.19 15.48 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mg/L = milligrams per liter mV = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective Ja 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 8 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-12D GWA-12D GWA-12S GWA-12S GWA-6S GWA-7D GWA-7D Round 1 (CSA Sampling) Round 2 (30-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) 6/4/2015 9/9/2015 6/4/2015 9/11/2015 9/12/2015 6/16/2015 9/10/2015 N N N N N N N GWA-12D DR-GWA-12D-NS-3Q15 GWA-12S DR-GWA-12S-NS-3Q15 DR-GWA-6S-NS-3Q15 GWA-7D DR-GWA-7D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Aluminum D 7429-90-5 NS pg/L 1 298 100 U 21 100 U 100 U 9.1 J 100 U Aluminum T 7429-90-5 NS pg/L 5 U 81 J 190 350 220 117 130 Antimony D 7440-36-0 NS pg/L 1 U 0.16 J 1 U 0.5 U 0.5 U 0.5 U 0.2 J Antimony T 7440-36-0 1 IMAC pg/L 1 U 0.19 J 1 U 0.5 U 0.5 U 0.5 U 0.2 J Arsenic D 7440-38-2 NS pg/L 2.54 2.3 1 U 0.14 J 3.1 0.5 U 0.5 U Arsenic T 7440-38-2 10 02L pg/L 3.71 2.7 1 U 0.16 J 2.9 0.13 J 0.5 U Barium D 7440-39-3 NS pg/L 23 16 53 46 210 23 19 Barium T 7440-39-3 700 02L pg/L 17 16 55 54 220 24 19 Beryllium D 7440-41-7 NS pg/L 1 U 0.2 U 1 U 0.2 U 0.2 U 0.2 U 0.2 U Beryllium T 7440-41-7 4 IMAC pg/L 1 U 0.2 U 1 U 0.2 U 0.2 U 0.2 U 0.2 U Boron D 7440-42-8 NS pg/L 50 U 50 U 50 U 50 U 710 50 U 50 U Boron T 7440-42-8 700 02L pg/L 50 U 50 U 50 U 50 U 700 50 UJ 50 U Cadmium D 7440-43-9 NS pg/L 1 U 0.08 U 1 U 0.08 U 0.08 U 0.08 U 0.08 U Cadmium T 7440-43-9 2 02L pg/L 1 U 0.08 U 1 U 0.08 U 0.08 U 0.08 U 0.08 U Calcium T 7440-70-2 NS pg/L 51700 54700 12200 10100 83000 26900 22800 Chromium D 7440-47-3 NS pg/L 1 U 0.23 J 1 U 0.48 J 0.45 J 0.25 J+ 1.3 Chromium T 7440-47-3 10 02L pg/L 2.87 0.43 J+ 1.01 1.4 0.75 J+ 0.51 J+ 0.54 J+ Cobalt D 7440-48-4 NS pg/L 1 U 0.31 J 1 U 0.24 J 1.6 2.8 2.7 Cobalt T 7440-48-4 1 IMAC pg/L 1 U 0.35 J 1 U 0.49 J 1.8 2.8 2.8 Copper D 1 7440-50-8 NS pg/L 3.32 1 U 1 UJ 0.57 J 0.29 J 0.22 J+ 1 U Copper T 7440-50-8 1000 02L pg/L 3.9 J+ 0.52 J 1 U 1.3 0.39 J 0.39 J+ 0.25 J+ Iron D 7439-89-6 NS pg/L 386 30 J 10 U 50 U 13600 1390 1700 Iron T 7439-89-6 300 02L pg/L 54 100 185 460 15200 1610 1800 Lead D 7439-92-1 NS pg/L 1 U 0.16 1 U 0.1 U 0.1 U 0.1 UJ 0.063 J Lead T 7439-92-1 15 02L pg/L 1.74 0.081 J 1 U 0.24 0.077 J 0.13 J+ 0.11 Magnesium T 7439-95-4 NS pg/L 16400 18000 5960 6070 12500 13300 12900 Manganese D 7439-96-5 NS pg/L 60 37 102 31 3700 1100 960 Manganese T 7439-96-5 50 02L pg/L 49 40 J+ 150 45 3800 1000 910 Mercury D 7439-97-6 NS pg/L 0.05 U 0.2 U 0.05 U 0.2 U 0.2 U 0.2 UJ 0.2 U Mercury T 7439-97-6 1 02L pg/L 0.05 U 0.2 U 0.05 U 0.2 U 0.2 U 0.2 UJ 0.2 UJ Methane N 74-82-8 NS pg/L 10 U 1.8 J+ 10 U 1.8 J+ 2740 10 U 1.8 J Molybdenum D 7439-98-7 NS pg/L 1.26 0.82 1 U 0.5 U 8.6 0.14 J 0.5 U Molybdenum T 7439-98-7 NS pg/L 1.52 0.8 1 U 0.11 J 8 0.11 J 0.5 U Nickel D 7440-02-0 NS pg/L 1 U 3 2.14 2.9 1.8 1.4 J+ 1.7 Nickel T 7440-02-0 100 02L pg/L 3.37 3.4 3.09 3A 1.9 2.1 J+ 1.3 J+ Potassium T 7440-09-7 NS pg/L 1000 5000 U 1690 5000 U 10700 5000 U 5000 U Selenium D 7782-49-2 NS pg/L 1 U 0.5 U 1 U 0.5 U 0.5 U 0.5 U 0.5 U Selenium T 7782-49-2 20 02L pg/L 1 U 0.5 U 1 U 0.5 U 0.5 U 0.5 U 0.5 U Sodium T 7440-23-5 NS pg/L 9470 9730 7920 7010 26200 25900 22900 Strontium D 7440-24-6 NS pg/L 533 520 140 140 680 290 290 Strontium T 7440-24-6 NS pg/L 526 520 140 140 710 290 280 Thallium D 7440-28-0 NS pg/L 0.2 U 0.1 U 0.2 U 0.1 U 0.1 U 0.1 UJ 0.1 U Thallium T 7440-28-0 0.2 IMAC pg/L 0.2 U 0.1 U 0.2 U 0.1 U 0.1 UJ 0.1 UJ 0.1 U Vanadium D 7440-62-2 NS pg/L 2.75 3 0.3 U 0.7 J 1.2 1 U 1 U Vanadium T 7440-62-2 0.3 IMAC pg/L 5.65 3.7 0.3 U 0.93 J 1.1 0.3 J 1 U Zinc D 7440-66-6 NS pg/L 14 2.9 J 6 5.1 J 13 2.6 J 12 Zinc T 7440-66-6 1000 02L pg/L 5 UJ 12 5 UJ 5.9 J 4.8 J 3.5 J 10 J+ Total Dissolved Solid N TDS 500000 02L pg/L 250000 257000 110000 105000 340000 242000 233000 Total Organic Carbot N TOC NS pg/L 202 J+ 1000 U 697 J+ 710 J 7800 590 J 1000 U Total Suspended Sol N TSS NS pg/L 16000 7200 5000 U 3000 371000 4300 5000 U Alkalinity, CO3 N ALK-CO3 NS pg/L 10000 U 5000 U 10000 U 5000 U 5000 UJ 10000 U 5000 U Alkalinity, HCO3 N ALK-HCO3 NS pg/L 190000 196000 28000 11900 317000 59000 53900 Alkalinity, lab N ALK-LAB NS pg/L 190000 196000 28000 11900 317000 59000 53900 Chloride N 16887-00-6 250000 02L pg/L 3900 3300 3000 1700 18900 3000 3000 Nitrite as N N 14797-65-0 1000 02L pg/L 178 808 Nitrogen, NO2 plus N NO2-NO3 NS pg/L 170 580 16 J- 20 U 20 U Sulfate N 14808-79-8 250000 02L pg/L 16000 15300 41000 46100 2300 98200 98600 Sulfide N 18496-25-8 NS pg/L 500 U 100 U 100 U 100 U 100 U 100 U 100 U As(III) T 7784-46-5 NS pg/L As(V) T 10103-60-3 NS pg/L Chromium (VI) T 18540-29-9 0.07 DHHS pg/L Fe(II) T 1345-25-1 NS pg/L Fe(III) T 1309-37-1 NS pg/L Mn(II) T 1344-43-0 NS pg/L Mn(IV) T 1313-13-9 NS pg/L Se(IV) T 10102-18-8 1 NS I pg/L Se(VI) T 13410-01-0 NS pg/L Uranium, Natural T 7440-61-1 NS pg/L Page 1 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-12D GWA-12D GWA-12S GWA-12S GWA-6S GWA-7D GWA-7D Round 1 (CSA Sampling) Round 2 (30-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) 6/4/2015 9/9/2015 6/4/2015 9/11/2015 9/12/2015 6/16/2015 9/10/2015 N N N N N N N GWA-12D DR-GWA-12D-NS-3Q15 GWA-12S DR-GWA-12S-NS-3Q15 DR-GWA-6S-NS-3Q15 GWA-7D DR-GWA-7D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Radium-226 T 13982-63-3 NS pCi/L Radium-228 T 15262-20-1 NS pCi/L Uranium-233 T 13968-55-3 NS pg/L Uranium-234 T 13966-29-5 NS pg/L Uranium-236 T 13982-70-2 NS pg/L Dissolved Oxygen N I DO NS mg/L 0.47 0.44 4.85 5.34 0.2 2.21 0.2 Temp (Celcius) N TEMP -- NS Deg C 17.7 20.7 18.3 23.4 21.1 29.8 22.9 pH (field) N PH 6.5 8.5 02L SU 1 7.47 7.4 5.45 5.6 6.8 6.01 6.2 Turbidity, field N TURB -- NS NTU 8.35 4.9 2.38 87.1 140.2 8.58 9.3 Spec. Cond. (field) N SC NS PS/cm 396.7 526 151.3 257.4 687 353.2 252.1 Oxidation Reduction N ORP NS my -81.4 -19.7 321 242.7 -92.1 129 -74.6 GW Depth (TOC) N GW_DEPTH-TOCj NS ft 33.28 16.76 19.7 20.5 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet my = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective January 2015) 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 2 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-7S GWA-7S GWA-8D GWA-8D GWA-8S GWA-9D GWA-9D Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (30-2015) Round 1 (CSA Sampling) Round 1 (CSA Sampling) Round 2 (3Q-2015) 6/19/2015 9/10/2015 6/5/2015 9/9/2015 6/18/2015 6/15/2015 9/9/2015 N N N N N N N GWA-7S DR-GWA-7S-NS-3Q15 GWA-8D DR-GWA-8D-NS-3Q15 GWA-8S_N_WG_20150618 GWA-9D DR-GWA-9D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Aluminum D 7429-90-5 NS pg/L 1 420 730 6.4 J 100 U 100 U 10 U 100 U Aluminum T 7429-90-5 NS pg/L 600 850 769 300 150 1270 100 U Antimony D 7440-36-0 NS pg/L 0.5 U 0.63 0.6 0.5 U 0.22 J 0.5 U 0.5 U Antimony T 7440-36-0 1 IMAC pg/L 0.23 J 0.6 0.71 0.5 U 0.16 J 0.5 U 0.5 U Arsenic D 7440-38-2 NS pg/L 0.5 U 0.5 U 1.2 0.98 0.6 2.1 0.69 Arsenic T 7440-38-2 10 02L pg/L 0.5 U 0.5 U 1.4 0.86 0.57 2.3 0.67 Barium D 7440-39-3 NS pg/L 25 32 29 32 19 24 20 Barium T 7440-39-3 700 02L pg/L 28 33 34 34 19 23 21 Beryllium D 7440-41-7 NS pg/L 4.7 6.7 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Beryllium T 7440-41-7 4 IMAC pg/L 3.7 7.7 0.2 U 0.2 U 0.2 U 0.085 J 0.2 U Boron D 7440-42-8 NS pg/L 38 J+ 50 U 50 U 50 U 39 J+ 50 U 50 U Boron T 7440-42-8 700 02L pg/L 50 U 50 U 50 U 50 U 34 J 50 U 50 U Cadmium D 7440-43-9 NS pg/L 0.46 0.42 0.08 U 0.08 U 0.081 0.08 U 0.08 U Cadmium T 7440-43-9 2 02L pg/L 0.37 0.43 0.027 J 0.08 UJ 0.08 U 0.08 U 0.08 U Calcium T 7440-70-2 NS pg/L 25800 23500 130000 124000 39600 17700 14200 Chromium D 7440-47-3 NS pg/L 0.95 J+ 0.87 0.9 J+ 1.1 0.46 J 0.25 J 0.34 J Chromium T 7440-47-3 10 02L pg/L 1.9 2 J+ 3.2 3.4 J+ 0.95 2.9 1.2 J+ Cobalt D 7440-48-4 NS pg/L 19.2 13.4 0.14 J 0.5 U 8.6 0.51 0.36 J Cobalt T 7440-48-4 1 IMAC I pg/L 17.7 14.6 0.26 J 0.19 J 9.7 1.2 0.38 J Copper D 1 7440-50-8 NS pg/L 1 UJ 2.4 5 J+ 0.32 J 0.37 J 1 U 1.9 Copper T 7440-50-8 1000 02L pg/L 1.2 J+ 2.4 J+ 1.7 J+ 0.88 J+ 0.42 J 2.1 J+ 1 U Iron D 7439-89-6 NS pg/L 50 U 50 U 50 U 140 50 U 1390 1800 Iron T 7439-89-6 300 02L pg/L 310 61 413 420 190 3290 2000 Lead D 7439-92-1 NS pg/L 0.1 U 0.056 J 0.46 0.1 U 0.1 U 0.1 U 0.13 Lead T 7439-92-1 15 02L pg/L 0.18 J+ 0.095 J 0.81 0.37 J+ 0.068 J 0.67 J+ 0.1 U Magnesium T 7439-95-4 NS pg/L 18600 18000 29200 34200 24800 3050 2620 Manganese D 7439-96-5 NS pg/L 1000 1100 1000 1600 2700 590 690 Manganese T 7439-96-5 50 02L pg/L 950 1200 1200 1700 1700 640 720 Mercury D 7439-97-6 NS pg/L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Mercury T 7439-97-6 1 02L pg/L 0.085 J+ 0.2 UJ 0.2 U 0.2 U 0.2 U 0.072 J 0.2 U Methane N 74-82-8 NS pg/L 1.9 J+ 2.4 J 28 8.8 J+ 6.6 J+ 10 U 3 J+ Molybdenum D 7439-98-7 NS pg/L 0.5 U 0.2 J 3.1 2.4 0.73 0.27 J 0.12 J Molybdenum T 7439-98-7 NS pg/L 0.14 J 0.16 J 3.4 2.3 0.73 0.52 0.12 J Nickel D 7440-02-0 NS pg/L 51.1 39.6 0.51 J+ 0.81 6.1 1.2 J+ 0.98 Nickel T 7440-02-0 100 02L pg/L 46.9 42 1.4 J+ 1.8 J+ 5.8 3.2 J+ 1.2 Potassium T 7440-09-7 NS pg/L 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Selenium D 7782-49-2 NS pg/L 1 0.62 0.84 0.69 0.5 U 0.5 U 0.5 U 0.5 U Selenium T 7782-49-2 20 02L pg/L 0.86 0.88 1.1 0.5 U 0.5 U 0.5 U 0.5 U Sodium T 7440-23-5 NS pg/L 18700 21400 29900 32900 40400 6140 5510 Strontium D 7440-24-6 NS pg/L 780 710 630 730 460 63 52 Strontium T 7440-24-6 NS pg/L 800 740 700 760 420 64 55 Thallium D 7440-28-0 NS pg/L 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U Thallium T 7440-28-0 0.2 IMAC I pg/L 0.1 U 0.1 U 0.018 J 0.1 U 0.1 U 0.1 U 0.1 U Vanadium D 7440-62-2 NS pg/L 1 U 0.4 J 3.2 0.41 J 1 UJ 1 U 1 U Vanadium T 7440-62-2 0.3 IMAC pg/L 0.38 J 1 U 5.2 1.3 0.45 J 1.8 1 U Zinc D 7440-66-6 NS pg/L 560 490 10 U 10 U 7.8 J 3.9 J+ 10 U Zinc T 7440-66-6 1000 02L pg/L 390 500 3.4 J+ 10 UJ 13 8.9 J+ 10 U Total Dissolved Solid N TDS 500000 02L pg/L 318000 287000 690000 J- 726000 397000 113000 91000 Total Organic Carbot N TOC NS pg/L 980 J 750 J 1100 970 J 1200 1000 U 17500 Total Suspended Sol N TSS NS pg/L 38000 3000 13000 J+ 6700 18900 16100 5000 U Alkalinity, CO3 N ALK-CO3 NS pg/L 5000 U 5000 U 10000 U 5000 U 5000 U 10000 U 5000 U Alkalinity, HCO3 N ALK-HCO3 NS pg/L 5500 2100 J 120000 129000 61800 57000 47600 Alkalinity, lab N ALK-LAB NS pg/L 5500 2100 J 120000 129000 61800 57000 47600 Chloride N 16887-00-6 250000 02L pg/L 2400 3000 4700 4000 5500 2000 2100 Nitrite as N N 14797-65-0 1000 02L pg/L Nitrogen, NO2 plus N I NO2-NO3 NS pg/L 370 1100 20 U 20 U 20 U 20 U 20 U Sulfate N 14808-79-8 250000 02L pg/L 176000 170000 368000 346000 181000 4200 4300 Sulfide N 18496-25-8 NS pg/L 100 U 100 U 500 U 100 U 100 U 500 U 100 U As(III) T 7784-46-5 NS pg/L As(V) T 10103-60-3 NS pg/L Chromium (VI) T 18540-29-9 0.07 DHHS I pg/L Fe(II) T 1345-25-1 NS pg/L Fe(III) T 1309-37-1 NS pg/L Mn(II) T 1344-43-0 1 NS pg/L Mn(IV) T 1313-13-9 NS pg/L Se(IV) T 10102-18-8 NS pg/L Se(VI) T 13410-01-0 NS pg/L Uranium, Natural T 7440-61-1 NS pg/L Page 3 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-7S GWA-7S GWA-8D GWA-8D GWA-8S GWA-9D GWA-9D Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (30-2015) Round 1 (CSA Sampling) Round 1 (CSA Sampling) Round 2 (3Q-2015) 6/19/2015 9/10/2015 6/5/2015 9/9/2015 6/18/2015 6/15/2015 9/9/2015 N N N N N N N GWA-7S DR-GWA-7S-NS-3Q15 GWA-8D DR-GWA-8D-NS-3Q15 GWA-8S_N_WG_20150618 GWA-9D DR-GWA-9D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Radium-226 T 13982-63-3 NS pCi/L Radium-228 T 15262-20-1 NS pCi/L Uranium-233 T 13968-55-3 NS pg/L Uranium-234 T 13966-29-5 NS pg/L Uranium-236 T 13982-70-2 NS pg/L Dissolved Oxygen N I DO NS mg/L 4.89 2.1 3.46 0.95 0.16 0.12 Temp (Celcius) N TEMP -- NS Deg C 25 30.1 23.6 19 26.1 16.7 pH (field) N PH 6.5 8.5 02L SU 1 5.39 4.9 7.81 7.35 6.4 6.2 Turbidity, field N TURB -- NS NTU 9 6.6 9.74 17.1 16.28 0.9 Spec. Cond. (field) N SC NS PS/cm 394.9 419.6 839 950 141.9 157.4 Oxidation Reduction N ORP NS my 342.9 24.9 78.9 -75 90.8 69.8 GW Depth (TOC) N GW DEPTH -TO NS ft 19.21 34.68 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet my = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 4 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-9S GWA-9S MW-12 MW-12 MW-12D MW-12D MW-20D Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) 6/19/2015 9/9/2015 6/20/2015 9/9/2015 6/20/2015 9/9/2015 6/24/2015 N N N N N N N GWA-9S DR-GWA-9S-NS-3Q15 MW-12 DR-MW-12-NS-3Q15 MW-12D DR-MW-I2D-NS-3Q15 MW-20D Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Aluminum D 7429-90-5 NS pg/L 1 100 U 100 U 100 U 100 U 100 U 100 U 100 U Aluminum T 7429-90-5 NS pg/L 4300 630 990 180 960 59 J 130 Antimony D 7440-36-0 NS pg/L 0.19 J 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U Antimony T 7440-36-0 1 IMAC pg/L 0.22 J 0.5 U 0.18 J 0.5 U 0.5 U 0.5 U 0.5 U Arsenic D 7440-38-2 NS pg/L 0.5 U 0.5 U 0.42 J 0.38 J 0.44 J 0.35 J 0.58 Arsenic T 7440-38-2 10 02L pg/L 0.63 0.5 U 0.71 0.28 J 0.44 J 0.24 J 0.91 Barium D 7440-39-3 NS pg/L 5 U 10 5.8 5.9 20 19 56 Barium T 7440-39-3 700 02L pg/L 42 17 10 6.7 29 21 66 Beryllium D 7440-41-7 NS pg/L 0.077 J 0.21 0.11 J 0.11 J 0.2 U 0.2 U 0.2 U Beryllium T 7440-41-7 4 IMAC pg/L 0.67 0.23 0.22 0.14 J 0.11 J 0.2 U 0.2 U Boron D 7440-42-8 NS pg/L 50 U 50 U 33 J+ 50 U 50 U 50 U 26 J Boron T 7440-42-8 700 02L pg/L 50 U 50 U 50 U 50 U 50 U 50 U 35 J Cadmium D 7440-43-9 NS pg/L 0.08 U 0.038 J 0.074 J 0.08 U 0.052 J 0.08 U 0.08 U Cadmium T 7440-43-9 2 02L pg/L 0.036 J 0.034 J 0.05 J 0.052 J 0.08 U 0.08 U 0.08 U Calcium T 7440-70-2 NS pg/L 1050 584 2440 3200 12800 12700 43400 Chromium D 7440-47-3 NS pg/L 0.27 J+ 0.57 0.41 J+ 0.18 J 0.2 J+ 0.48 J 0.5 UJ Chromium T 7440-47-3 10 02L pg/L 3.5 0.97 J+ 2.6 J+ 0.59 J+ 1.4 J+ 0.52 J+ 0.47 J Cobalt D 7440-48-4 NS pg/L 1.5 4.5 9.9 9.3 4.5 4.3 0.5 U Cobalt T 7440-48-4 1 IMAC I pg/L 9.3 4.7 10.1 8.9 4.8 4.6 0.5 U Copper D 1 7440-50-8 NS pg/L 1 UJ 5 3.1 J+ 2.9 0.25 J+ 0.53 J 1 U Copper T 7440-50-8 1000 02L pg/L 4.5 J+ 1.4 10.6 3.2 1.7 J+ 0.38 J 1 U Iron D 7439-89-6 NS pg/L 50 U 50 U 1900 2400 4800 4500 50 U Iron T 7439-89-6 300 02L pg/L 5100 750 3600 2900 6100 4900 200 Lead D 7439-92-1 NS pg/L 0.1 U 0.51 0.11 J+ 0.19 0.1 U 0.1 U 0.1 U Lead T 7439-92-1 15 02L pg/L 4.3 0.38 4.5 1.4 0.51 0.087 J 0.094 J Magnesium T 7439-95-4 NS I pg/L 890 558 4680 5090 8110 7860 11000 Manganese D 7439-96-5 NS pg/L 36 100 440 450 1300 1300 470 Manganese T 7439-96-5 50 02L pg/L 220 110 450 470 1400 1400 500 Mercury D 7439-97-6 NS pg/L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Mercury T 7439-97-6 1 02L pg/L 0.073 J+ 0.2 U 0.072 J+ 0.2 U 0.2 U 0.2 U 0.2 U Methane N 74-82-8 NS pg/L 2.3 J+ 2.7 J+ 3.4 J+ 4.9 J+ 2.3 J+ 2.9 J+ 12.8 Molybdenum D 7439-98-7 NS pg/L 0.5 U 0.5 U 0.15 J 0.1 J 0.16 J 0.11 J 0.22 J Molybdenum T 7439-98-7 NS I pg/L 0.3 J 0.5 U 0.2 J 0.15 J 0.2 J 0.15 J 0.22 J Nickel D 7440-02-0 NS pg/L 0.66 J+ 2.9 9.7 9.4 5 4.8 0.5 U Nickel T 7440-02-0 100 02L pg/L 6.1 J+ 2.9 11.2 9.8 5.7 5.2 0.19 J Potassium T 7440-09-7 NS pg/L 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Selenium D 7782-49-2 NS pg/L 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U Selenium T 7782-49-2 20 02L pg/L 0.56 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U Sodium T 7440-23-5 NS pg/L 6980 5390 4970 J 5490 13100 11200 10600 Strontium D 7440-24-6 NS pg/L 3.1 J 8.1 9.2 11 46 51 460 Strontium T 7440-24-6 NS pg/L 21 9.1 10 12 51 53 520 Thallium D 7440-28-0 NS pg/L 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U Thallium T 7440-28-0 0.2 IMAC pg/L 0.034 J 0.1 U 0.017 J 0,019 J 0.1 U 0.1 U 0.1 U Vanadium D 7440-62-2 NS pg/L 1 U 1 U 1 U 1 U 1 U 1 U 1 U Vanadium T 7440-62-2 0.3 IMAC pg/L 5.1 0.59 J 2.6 1 U 1.4 1 U 0.41 J Zinc D 7440-66-6 NS pg/L 5.1 J+ 12 90 84 12 J+ 17 10 UJ Zinc T 7440-66-6 1000 02L pg/L 20 16 92 86 16 18 10 UJ Total Dissolved Solid N TDS 500000 02L pg/L 161000 50000 72000 69000 168000 145000 187000 Total Organic Carbot N TOC NS pg/L 14200 1000 U 1000 U 1000 U 1000 U 1000 U 1000 U Total Suspended Sol N TSS NS pg/L 239000 30200 76300 24200 120000 6900 5500 Alkalinity, CO3 N ALK-CO3 NS pg/L 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U 5000 U Alkalinity, HCO3 N ALK-HCO3 NS pg/L 9100 5700 17200 22100 62500 54700 158000 Alkalinity, lab N ALK-LAB NS pg/L 9100 5700 17200 22100 62500 54700 158000 Chloride N 16887-00-6 250000 1 02L pg/L 4200 4000 5900 6000 9400 8900 4200 Nitrite as N N 14797-65-0 1000 02L pg/L Nitrogen, NO2 plus N NO2-NO3 NS pg/L 48 36 20 U 20 U 20 UJ 20 U 12 J Sulfate N 14808-79-8 250000 02L pg/L 650 J 2700 10200 9900 25400 23200 5700 Sulfide N 18496-25-8 NS pg/L 100 U 100 U 100 U 100 U 100 U 100 U 100 U As(III) T 7784-46-5 NS pg/L As(V) T 10103-60-3 NS pg/L Chromium (VI) T 18540-29-9 0.07 1 DHHS pg/L Fe(II) T 1345-25-1 NS pg/L Fe(III) T 1309-37-1 NS pg/L Mn(II) T 1344-43-0 NS pg/L Mn(IV) T 1313-13-9 NS pg/L Se(IV) T 10102-18-8 NS pg/L Se(VI) T 13410-01-0 1 NS pg/L Uranium, Natural T 7440-61-1 1 NS pg/L Page 5 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: GWA-9S GWA-9S MW-12 MW-12 MW-12D MW-12D MW-20D Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) 6/19/2015 9/9/2015 6/20/2015 9/9/2015 6/20/2015 9/9/2015 6/24/2015 N N N N N N N GWA-9S DR-GWA-9S-NS-3Q15 MW-12 DR-MW-12-NS-3Q15 MW-12D DR-MW-I2D-NS-3Q15 MW-20D Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Radium-226 T 13982-63-3 NS pCi/L Radium-228 T 15262-20-1 NS pCi/L Uranium-233 T 13968-55-3 NS pg/L Uranium-234 T 13966-29-5 NS pg/L Uranium-236 T 13982-70-2 NS pg/L Dissolved Oxygen N I DO NS mg/L 4.17 4.52 0.25 0.2 0.25 0.2 0.49 Temp (Celcius) N TEMP -- NS Deg C 23.8 19 19.4 18.5 23.7 19.9 16.8 pH (field) N PH 6.5 8.5 02L SU 1 5.55 5.1 5.58 5.6 6.18 6.1 7.44 Turbidity, field N TURB -- NS NTU 235.9 7.2 51.04 8.2 29.71 4.89 9.67 Spec. Cond. (field) N SC NS PS/cm 39.3 48.1 58.3 101.7 210.5 214.5 322 Oxidation Reduction N ORP NS my 331.5 287 166.3 -48.2 64.5 -54.4 22 GW Depth (TOC) N GW_DEPTH-TOCj NS I ft 32.68 23.35 22.64 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet my = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 6 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: MW-20S OW-310D Round 1 (CSA Sampling) Round 2 (30-2015) 6/24/2015 9/11/2015 N N MW-20S DR-OW-310D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Aluminum D 7429-90-5 NS pg/L 100 U 100 U Aluminum T 7429-90-5 NS pg/L 100 U 800 Antimony D 7440-36-0 NS pg/L 0.5 U 0.28 J Antimony T 7440-36-0 1 IMAC pg/L 0.5 U 0.25 J Arsenic D 7440-38-2 NS pg/L 0.58 777 Arsenic T 7440-38-2 10 02L pg/L 0.63 782 Barium D 7440-39-3 NS pg/L 12 380 Barium T 7440-39-3 700 02L pg/L 13 410 Beryllium D 7440-41-7 NS pg/L 0.2 U 0.2 U Beryllium T 7440-41-7 4 IMAC pg/L 0.2 U 0.12 J Boron D 7440-42-8 NS pg/L 50 U 980 Boron T 7440-42-8 700 02L pg/L 50 U 980 Cadmium D 7440-43-9 NS pg/L 0.08 U 0.08 U Cadmium T 7440-43-9 2 02L pg/L 0.08 U 0.08 U Calcium T 7440-70-2 NS pg/L 15300 95200 Chromium D 7440-47-3 NS pg/L 0.24 J+ 0.21 J Chromium T 7440-47-3 10 02L pg/L 0.22 J 0.95 J+ Cobalt D 7440-48-4 NS pg/L 2.2 1.4 Cobalt T 7440-48-4 1 IMAC pg/L 2.1 1.9 Copper D 1 7440-50-8 NS pg/L 1 U 1 U Copper T 7440-50-8 1000 02L pg/L 1 U 1.7 J+ Iron D 7439-89-6 NS pg/L 2500 2200 Iron T 7439-89-6 300 02L pg/L 2800 3500 Lead D 7439-92-1 NS pg/L 0.1 U 0.1 U Lead T 7439-92-1 15 02L pg/L 0.1 U 0.71 Magnesium T 7439-95-4 NS pg/L 10500 13500 Manganese D 1 7439-96-5 NS pg/L 840 1400 Manganese T 7439-96-5 50 02L pg/L 820 1600 Mercury D 7439-97-6 NS pg/L 0.2 U 0.2 U Mercury T 7439-97-6 1 02L pg/L 0.2 U 0.2 U Methane N 74-82-8 NS pg/L 79.2 816 Molybdenum D 7439-98-7 NS pg/L 0.22 J 45.9 Molybdenum T 7439-98-7 NS pg/L 0.18 J 43 Nickel D 7440-02-0 NS pg/L 0.92 2.2 Nickel T 7440-02-0 100 02L pg/L 0.87 2.6 J+ Potassium T 7440-09-7 NS pg/L 5000 U 7810 Selenium D 7782-49-2 NS pg/L 0.5 U 0.5 U Selenium T 7782-49-2 20 02L pg/L 0.5 U 0.5 U Sodium T 7440-23-5 NS I pg/L 9640 20000 Strontium D 7440-24-6 NS pg/L 120 2600 Strontium T 7440-24-6 NS pg/L 130 2600 Thallium D 7440-28-0 NS pg/L 0.1 U 0.091 J Thallium T 7440-28-0 0.2 IMAC pg/L 0.1 U 0.14 J+ Vanadium D 7440-62-2 NS pg/L 1 U 1.6 Vanadium T 7440-62-2 0.3 IMAC pg/L 1 U 3.2 Zinc D 7440-66-6 NS I pg/L 2.8 J+ 12 Zinc T 7440-66-6 1000 02L pg/L 60 3.4 J Total Dissolved Solic N TDS 500000 02L pg/L 121000 383000 Total Organic Carbot N TOC NS pg/L 690 J 1000 U Total Suspended Sol N TSS NS pg/L 3000 6600 Alkalinity, CO3 N ALK-CO3 NS pg/L 5000 U 5000 U Alkalinity, HCO3 N ALK-HCO3 NS pg/L 68300 283000 Alkalinity, lab N ALK-LAB NS pg/L 68300 283000 Chloride N 16887-00-6 250000 02L pg/L 20800 19100 Nitrite as N N 14797-65-0 1000 02L pg/L Nitrogen, NO2 plus N NO2-NO3 NS pg/L 20 U 20 U Sulfate N 14808-79-8 250000 02L pg/L 3800 26400 Sulfide N 18496-25-8 NS pg/L 100 U 100 U As(III) T 7784-46-5 NS pg/L As(V) T 10103-60-3 NS pg/L Chromium (VI) T 18540-29-9 0.07 DHHS pg/L Fe(II) T 1345-25-1 NS pg/L Fe(III) T 1309-37-1 NS pg/L Mn(II) T 1344-43-0 NS pg/L Mn(IV) T 1313-13-9 NS pg/L Se(IV) T 10102-18-8 NS pg/L Se(VI) T 13410-01-0 NS pg/L Uranium, Natural T 7440-61-1 NS pg/L Page 7 of 8 Table 2-6 Groundwater Results Upgradient of Ash Basin and Ash Storage Areas - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: MW-20S OW-310D Round 1 (CSA Sampling) Round 2 (30-2015) 6/24/2015 9/11/2015 N N MW-20S DR-0W-310D-NS-3Q15 Constituent Fractio CAS RN Criteria Min Groundwate Criteria Unit Radium-226 T 13982-63-3 NS pCi/L Radium-228 T 15262-20-1 NS pCi/L Uranium-233 T 13968-55-3 NS pg/L Uranium-234 T 13966-29-5 NS pg/L Uranium-236 T 13982-70-2 NS pg/L Dissolved Oxygen N I DO NS I mg/L 0.81 Temp (Celcius) N TEMP -- NS Deg C 23.6 pH (field) N PH 6.5 8.5 02L SU 7.1 Turbidity, field N TURB -- NS NTU 5.82 Spec. Cond. (field) N SC NS PS/cm 483.9 Oxidation Reduction N ORP NS my -133.3 GW Depth (TOC) N GW DEPTH -TO NS ft Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet my = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 8 of 8 Table 2-7 Groundwater Results Beneath Ash Basin - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: AB-10D AB-10D AB-25BR AB-25BR AB-25D AB-25D AB-30BR Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) 6/24/2015 9/11/2015 6/26/2015 9/11/2015 6/26/2015 9/12/2015 6/24/2015 N N N N N N N AB-10D DR-AB-10D-NS-3Q15 AB-25BR DR-AB-25BR-NS-3Q15 AB-25D DR-AB-25D-NS-3Q15 AB-30BR Constituent Fraction CAS RN Criteria Min (range only) Groundwater Criteria Criteria Source Unit Aluminum D 7429-90-5 NS pq/L 74 J 100 U 100 U 100 U 52 J 100 U 100 U Aluminum T 7429-90-5 NS pq/L 290 430 100 U 85 J 170 360 280 Antimony D 7440-36-0 NS pq/L 8.8 1.5 1 0.86 1.6 0.5 U 0.5 U Antimony T 7440-36-0 1 IMAC pg/L 1.9 1.4 1 0.45 J 1.7 0.2 J 0.5 U Arsenic D 7440-38-2 NS pg/L 0.66 0.41 J 2.4 1.6 0.31 J 0.25 J 0.82 Arsenic T 7440-38-2 10 02L pg/L 0.68 0.51 J+ 2.6 1 0.45 J 0.38 J 0.83 Barium D 7440-39-3 NS pq/L 37 310 19 30 16 26 82 Barium T 7440-39-3 700 02L pg/L 290 400 21 35 20 29 99 Beryllium D 7440-41-7 NS pg/L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Beryllium T 7440-41-7 4 IMAC pg/L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U Boron D 7440-42-8 NS pq/L 250 240 190 270 820 930 300 Boron T 7440-42-8 700 02L pg/L 290 230 180 260 840 830 320 Cadmium D 7440-43-9 NS pq/L 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U 0.08 U Cadmium T 7440-43-9 2 02L pq/L 0.08 U 0.08 U 0.08 U 0.08 U 0.026 J 0.08 U 0.08 U Calcium T 7440-70-2 NS pq/L 60800 J- 88700 33200 40500 29300 35600 J- 69700 Chromium D 7440-47-3 NS pq/L 5.5 3.4 4.4 0.49 J 0.19 J+ 0.33 J+ 0.86 J+ Chromium T 7440-47-3 10 02L pg/L 4.1 6.1 30.1 13.4 0.96 2.9 J+ 2.2 J+ Cobalt D 7440-48-4 NS pq/L 0.96 1.1 0.5 U 0.5 U 0.25 J 0.34 J+ 0.5 U Cobalt T 7440-48-4 1 IMAC pg/L 1.1 1.9 0.27 J 0.24 J 0.3 J 0.78 0.29 J Copper D 7440-50-8 NS pq/L 1.5 J+ 5.3 0.41 J+ 0.48 J 0.28 J+ 1.3 J+ 1.2 J+ Copper T 7440-50-8 1000 02L pq/L 2.1 J+ 1.9 1.6 2.5 J+ 0.36 J 0.77 J+ 2.5 J+ Iron D 7439-89-6 NS pq/L 50 U 50 UJ 50 U 50 U 50 U 50 U 77 Iron T 7439-89-6 300 02L pg/L 34 J 43 J 150 150 93 330 490 Lead D 7439-92-1 NS pq/L 0.1 UJ 1 0.1 UJ 0.074 J 0.1 UJ 0.13 J+ 0.14 J+ Lead T 7439-92-1 15 02L pq/L 0.13 1.2 0.086 J 0.49 0.17 0.52 J+ 0.28 Magnesium T 7439-95-4 NS pq/L 10900 3060 6090 8390 10500 13400 10900 Manganese D 7439-96-5 NS pq/L 5 U 5 U 4.1 J 52 190 510 350 Manganese T 7439-96-5 50 02L pg/L 26 13 7.8 59 180 550 370 Mercury D 7439-97-6 NS pq/L 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 UJ 0.2 U Mercury T 7439-97-6 1 02L pq/L 0.2 U 0.2 UJ 0.2 U 0.2 UJ 0.2 U 0.2 U 0.2 U Methane N 74-82-8 NS pq/L 31.5 J+ 38.6 J 8.6 J+ 6.6 J+ 4.2 J+ 3.5 J+ 34.5 J+ Molybdenum D 7439-98-7 NS pq/L 2.4 2.1 7.4 5.5 12.6 11.4 2.3 Molybdenum T 7439-98-7 NS pq/L 1.6 2.4 8.3 3.4 13 11.6 2.4 Nickel D 7440-02-0 NS pq/L 1.8 J+ 1.7 1.2 J+ 1.7 2.3 3 J+ 1.4 J+ Nickel T 7440-02-0 100 02L pq/L 1.6 J+ 2.3 15.1 7.3 2.9 4.8 J+ 2.5 J+ Potassium T 7440-09-7 NS pq/L 68800 J- 93800 5000 U 5000 U 5000 U 5000 U 5000 U Selenium D 7782-49-2 NS pq/L 0.38 J 0.35 J 0.67 0.44 J 0.5 U 0.5 U 0.5 U Selenium T 7782-49-2 20 02L pg/L 0.22 J 0.47 J 0.64 0.23 J 0.5 U 0.5 U 0.5 U Sodium T 7440-23-5 NS pq/L 42000 58200 43700 35500 32300 24300 14200 Strontium D 7440-24-6 NS pq/L 730 3400 380 530 160 160 680 Strontium T 7440-24-6 NS pq/L 2900 3900 410 570 180 170 740 Thallium D 7440-28-0 NS pq/L 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U Thallium T 7440-28-0 0.2 IMAC pg/L 0.1 U 0.02 J 0.1 U 0.1 UJ 0.023 J 0.1 U 0.1 U Vanadium D 7440-62-2 NS pq/L 2.9 0.96 J 5.1 3.2 0.56 J 0.45 J 1 U Vanadium T 7440-62-2 0.3 IMAC pg/L 1.5 0.63 J 5.5 1.7 0.69 J 0.64 J 0.91 J Zinc D 7440-66-6 NS pq/L 10 UJ 10 U 10 U 10 U 10 U 27 J+ 10 UJ Zinc T 7440-66-6 1000 02L pg/L 10 UJ 7.2 J 10 U 2.8 J 3.6 J 38 12 J+ Total Dissolved Solids N TDS 500000 02L pg/L 272000 1320000 296000 289000 258000 247000 327000 Total Organic Carbon N TOC NS pq/L 28400 1200 1200 960 J 1000 U 10700 1000 U Total Suspended Solids N TSS NS pq/L 80400 2500 U 10100 5000 22400 12100 Alkalinity, CO3 N ALK-CO3 NS pq/L 10000 5000 U 11500 5000 U 5000 U 5000 UJ 5000 U Alkalinity, HCO3 N ALK-HCO3 NS pg/L 226000 698000 55900 66600 70800 1000 J+ 133000 Alkalinity, lab N ALK-LAB NS pq/L 236000 698000 67400 66600 70800 1000 J+ 133000 Chloride N 16887-00-6 250000 02L pq/L 24900 17400 22900 23600 19800 20400 20800 Nitrite as N N 14797-65-0 1000 02L pq/L Nitrogen, NO2 plus NO3 N NO2-NO3 NS pq/L 13 J+ 20 U 20 U 20 U 12 J 20 U 20 UJ Sulfate N 14808-79-8 250000 02L pg/L 33700 19800 99000 99800 83000 84800 96700 Sulfide N 18496-25-8 NS pq/L 100 U 100 U 100 U 100 U 100 U 100 U 100 U As(III) T 7784-46-5 NS pq/L 0.439 0.189 As(V) T 10103-60-3 NS pq/L 0.143 0.325 Chromium (VI) T 18540-29-9 0.07 DHHS pg/L 4.51 0.039 J+ Fe(II) T 1345-25-1 NS pq/L 20 U 20 U Fe(III) T 1309-37-1 NS pq/L 20 UJ 20 U Mn(II) T 1344-43-0 NS pq/L 5 UJ 213 Mn(IV) T 1313-13-9 NS pq/L 13.1 5.76 Se(IV) T 10102-18-8 NS pq/L 0.5 U 0.5 U Se(VI) T 13410-01-0 NS pq/L 0.5 U 0.5 U Uranium, Natural T 7440-61-1 NS pg/L 1.6 1.3 1.28 Page 1 of 10 Table 2-7 Groundwater Results Beneath Ash Basin - Round 1 and Round 2 Corrective Action Plan Part 2 Dan River Steam Station Ash Basin Location: Event: Sample Date: Sample Type Code: Sample Name/ID: AB-10D AB-10D AB-25BR AB-25BR AB-25D AB-25D AB-30BR Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) Round 2 (3Q-2015) Round 1 (CSA Sampling) 6/24/2015 9/11/2015 6/26/2015 9/11/2015 6/26/2015 9/12/2015 6/24/2015 N N N N N N N AB-10D DR-AB-10D-NS-3Q15 AB-25BR DR-AB-25BR-NS-3Q15 AB-25D DR-AB-25D-NS-3Q15 AB-30BR Constituent Fraction CAS RN Criteria Min (range only) Groundwater Criteria Criteria Source Unit Radium-226 T 13982-63-3 NS pCi/L 1.02 5.47 0.499 J Radium-228 T 15262-20-1 NS pCi/L 2.03 J 3 U 3 U Uranium-233 T 13968-55-3 NS uq/L 0.05 U 0.05 U 0.05 U Uranium-234 T 13966-29-5 NS pq/L 0.05 U 0.05 U 0.05 U Uranium-236 T 13982-70-2 NS uq/L 0.05 U 0.05 U 0.05 U Dissolved Oxygen N DO NS mg/I 0.2 0.27 0.67 0.51 0.74 Temp (Celcius) N TEMP -- NS Deg C 22.9 23.1 24A 22.7 23.7 pH (field) N PH 6.5 8.5 02L SU 12.2 9.12 8.47 7.09 7.1 Turbidity, field N TURB NS NTU 9.4 3.31 5.13 1 6.11 16.71 Spec. Cond. (field) N SC NS PS/cm 5588 427 440.7 390 374.2 Oxidation Reduction Potential N ORP NS mV -197.8 155 5.1 208 127.9 GW Depth (TOC) I N GW DEPTH-TOCj NS ft 59.23 52.44 Notes: pg/L = micrograms per liter pS/cm = microsiemens per centimeter ft = feet mV = millivolts NTU - nephelometric turbidity units pCi/L = picocuries per liter SU = standard unit J = laboratory estimated concentration J- = estimated concentration, biased low J+ = estimated concentration, biased high U = results not detected at concentrations which equal the laboratory's method reporting limit 02B = North Carolina surface water standards as specified in T15 NCAC 02B .0211 and .0216 (amended effective January 2015) 02L = North Carolina groundwater standards as specified in T15A NCAC 02L D = dissolved Deg C = degree Celsius DHHS = North Carolina Department of Health and Human Services DO = dissolved oxygen GW = groundwater GWQS = groundwater quality standard IMAC = Interim Maximum Allow Concentration N = normal NS = no standard T = total TDS = total dissolved solids TOC = total organic carbon Page 2 of 10