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HomeMy WebLinkAboutCCB0001_Halifax Coal Ash Structural Fill Vaughan PropertyMRS URS Corporation 1600 Perimeter Park Drive„ Suite 400 Morrisville, NC 27560 Tel: 919.461.1100 Fax: 919,461.1415 w .ursoorp.00m November 15, 2007 — \6171 8g?0 Mr. Edward Mussler AN ReCE?' Permitting Supervisor — Solid Waste Section o NOV d North Carolina Department of Environment and Natural Resources 2007 Division of Waste Management CIO S01ldW 3b 1646 Mail Service Center Raleigh, NC 27699-1646 Subject: Coal Ash Structural Fill Site License Application O.N. Vaughan Property at 4752 Highway 301- Halifax, NC 36.3708 N Latitude; 77.595 W Longitude URS Project No. 31825952 Dear Mr. Mussler: On behalf of our client, Westmoreland Partners, Roanoke Valley Energy Plant in Weldon, NC, URS Corporation is submitting herein 2 copies of the above referenced application for a Coal Ash Structural Fill Site in accordance with North Carolina Department of Environment and Natural Resources, Division of Waste Management Regulations; Section .1700 Requirements for Beneficial Use of Coal Combustion By -Products (CCB). Westmoreland Partners and the property owner (O.N. Vaughan) have agreed to beneficially use CCB to reclaim a licensed soil mining site occupying 6-acres on Mr. Vaughan's property. This application seeks approval to restore the soil borrow pit to near its original topography by beneficially using CCB instead of soil as structural fill in order to restore the site to use as pasture land. The following notifications are provided as required in Section .1703(a): 1. The Structural Fill Site is shown in Figure 1 - Weldon Quadrangle at; 36.3708 N Lat. 77.595 W Long. 2. Structural fill placement is scheduled to begin as soon as approvals are received and should be complete by September 2008. 3. The estimated coal ash volume to be used for this project is 64,000 cubic yards. 4. A recent TCLP analysis of the coal ash is provided in Appendix D. 5. A signed and dated statement from the owner of the structural fill site property is also provided in Appendix D. 6. The CCB generator is: Westmoreland Partners Roanoke Valley Energy Facility 290 Power Place Weldon, NC 27890 Attention: Mr. Glenn Outland 252-536-3200 x 246 R%Common PmjeAa�MOVAQW7 Bene MW eeh. p n pmw I WI,h , MI Mh BwOdal Ilse SiG mwd-. I.doc URS The following submittal characterizes the site conditions and documents their conformance with the siting criteria in .1704 of the rules. Further, URS has designed the CCB structural fill facility controls to comply with .1705 and .1706 in the rules. Callus at 919-461-1100 with any questions concerning this application. Sincerely yours, Richard K. Lowe Ed Edens, P.E. Principal Geotechnical Engineer Civil/Roadway Engineering Gro PAO mon Pwje UWTROVAVW7 Be dale u P it qop IsWlg"MI Ma Bea WUm SMe mood-m I.doc URS Corporation 1600 Perimeter Park Drive„ Suite 400 Morrisville, NC 27560 Tel: 919.461.1100 Fax: 919.461.1415 www.urscorp.com November 14, 2007 Mr. Glenn W. Outland Environmental & Fuels Manager Roanoke Valley Energy Facility 290 Power Place P.O. Box 351 Weldon, NC 27890 Subject: Coal Ash Structural Fill Site License Application O.N. Vaughan Property at 4752 Highway 301- Halifax, NC 36.3708 N Latitude; 77.595 W Longitude URS Project No. 31825952 Dear Mr. Outland: URS Corporation has completed the above referenced work as outlined in our June 12, 2007 proposal, and authorized by Westmoreland Partners purchase order 2071061 dated August 30, 2007. The purpose of this assignment was to assess and prepare permitting documents for use of the above referenced parcel of property for a Coal Ash Structural Fill site in accordance with the North Carolina Department of Environment and Natural Resources, Division of Waste Management Regulations; Section .1700 Requirements for Beneficial Use of Coal Combustion By -Products (CCB). Site and Project Specific Information includes: 1. The Structural Fill Site is shown in Figure 1 - Weldon Quadrangle at; 36.3708 N Lat. 77.595 W Long. — 2. Structural fill placement is scheduled to begin as soon as approvals are received (December 2007) and should be complete by September 2008. 3. The estimated coal ash volume to be used for this project is 64,000 cubic yards. 4. A recent TCLP analysis of the coal ash is provided in Appendix D. 5. A signed and dated statement from the owner of the structural fill site property is provided in Appendix D. 6. The CCB generator is: Westmoreland Partners - Roanoke Valley Energy Facility 290 Power Place Weldon, NC 27890 Attention: Mr. Glenn Outland 252-536-3200 x 246 P:\Can. P.]ea W�OVA=l Benef Itl e . p ft gopee I Ml hM1 nl M Benelld.1 Va 8Be veld -re 1. w. URS The following submittal characterizes the site conditions and documents their conformance with the siting criteria in. 1704 of the rules. Further, URS has designed the CCB structural fill facility controls to comply with .1705 and .1706 in the rules, and we appreciate the opportunity to be of continued service to Westmoreland Partners. We stand ready to assist you with implementation of this project and ask that you call us at 919-461-1100 with any questions concerning this report. Sincerely yours, Richard K. Lowe Principal Geotechnical Engineer ON F Ed Edens, P.E. Civil/Roadway Engineering Group Manager P:\Common Prtyeds WMOVA�W Benelldd e u permit pmpou lgM yWIT BwOdM Uee Ske mpoB�rnBt,tlec TABLE OF CONTENTS Section 1 Introduction and Background........................................................................................1-1 1.1 Introduction.............................................................................................. 1-1 1.2 Background..............................................................................................1-1 Section 2 Soil and Groundwater Conditions.................................................................................2.1 2.1 Site Conditions......................................................................................... 2-1 2.2 Soil Conditions.........................................................................................2-3 2.3 Groundwater Conditions.......................................................................... 2-4 Section3 Notifications....................................................................................................................3.1 3.1 Notifications.............................................................................................3-1 Section 4 Structural Fill Facility Development..............................................................................4-1 4.1 Structural Fill Development..................................................................... 4-1 4.1.1 Stormwater Control...................................................................... 4-2 4.2 Structural Fill Facility Closure................................................................. 4-2 4.3 Recordation of Structural Fill Facility ..................................................... 4-2 FIGURES Figure 1 USGS Quadrangle Map — Weldon, North Carolina Figure 2 Stormwater Stilling Basin at Northwest corner of borrow site Figure 3 Stone filter dam forming Stormwater Stilling Basin Figure 4 Soil Borrow Site looking South from North Edge Figure 5 Groundwater Contour Map — Appendix B — Figure 6 Final Contour Map — Appendix C TABLES Table 1 Groundwater Level Summary Sheet — Appendix B - Appendix A Structural Fill Site Topographic Map Appendix B Soil Boring Logs Table 1 — Groundwater Level Summary Sheet Figure 5 — Groundwater Contour Map Appendix C Figure 6 — Final Contour Map Volume Calculation Summary Sheet Appendix D Coal Ash TCLP Leaching Test Results Signed Landowner Agreement for Structural Fill Placement Appendix E Erosion Control Plan 4 P:\Common Proj 0WTROVAI 7Ben NWueep mX MO�1eW h"W1 Mh BeOdN Ue SR.nWn.mOl.Eoc SEC EONE InYONC[ton and Background 1.1 INTRODUCTION Westmoreland Partners operates a coal-fired power generating facility in Weldon, North Carolina. The Coal Combustion By -Products (CCB) is proposed for beneficial use in refilling 5.2-acres in a 7-acre (+/-) soil borrow site situated 4.4 miles south of Weldon at 4752 Highway 301 in Halifax County. The soil borrow site is licensed as a mining facility by the property owner, O.N. (Nat) Vaughan. Mr. Vaughan and Westmoreland Partners have an agreement whereby Westmoreland will provide CCB as a structural fill to restore the borrow site as provided for in Section .1700 of the North Carolina Solid Waste Management 15A NCAC 13B Rules. 1.2 BACKGROUND This report describes the borrow site conditions, characterizes site soil and groundwater conditions, and provides drawings showing the Structural Fill placement and cover requirements prescribed in Section .1700 of the North Carolina Solid Waste Management 15A NCAC 13B Rules, for Beneficial Use of CCB's. umP:\Common_P{eda11'OOTROV�12W]BmelkJd aeh u..p.rn�X gapavle\HlpMwy 301AM Berefltlel We SlM.ePULnrOl.tlx 1-1 UNIONTWO Soil and Groundwater Conditions 2.1 SITE CONDITIONS ~ The parcel occupies approximately 7.25-acres of land used as a soil borrow facility, located within a 224-acre parcel of land owned by O. N. (Nat) Vaughan at 4752 Highway 301 in Halifax County, North Carolina. The facility is located immediately across highway 301 from the Halifax County Social Services facility. The site is located 4.4 miles south of Weldon, NC (36.3709 N Latitude; 77.595 W Longitude), as shown in Figure 1. The site was formerly farmland, and has been licensed as a soil mining facility since the 1980's by the current property owner, Mr. Vaughan. The area was previously a gently sloping mound that drained north, east, and west. An unnamed stream is located about 300 to 400 feet north of the borrow area. The mining permit included provision for soil erosion and sedimentation controls. A sedimentation basin was constructed in the northwest corner of the borrow area (See Figure 2), and discharge from the stilling basin is filtered through two stone check dams (See Figure 3). Figure 1 - USGS Quadrangle Map — Weldon, North Carolina P:O mmon Pmjac VWAROVAUW7 Bentl d aeh u p ft pmpoealNliphvmy BB1 Aeh BenOdd Uee SBe mpod-m I.&c 2-1 SEL71ONTWO Soil and Groundwater Conditlons Figure 2 — Stormwater Stilling Basin at Northwest corner of borrow site. Figure 3 — Stone filter dam forming Stormwater Stilling Basin. The borrow site was developed in general accordance with the mining permit development plans. The base of the borrow site slopes at approximately 1 % from the southeast corner to the stilling basin in the northwest corner. The south bank of the borrow site is a steep scarp averaging 14 feet in height. The other 3 sides of the borrow area are gently sloped, vegetated, and range from PACommon_PipjeGe W0 DVA=7Bene de u pennh gopovIMghx WI Nh Ben 81 Um 849 Input-raA1.Mp 2-2 SEBIONTWO Soil and Groundwater Conditions about 4 to 8 feet in height (See Figure 4). Approximately 75,000 cubic yards of soil were reportedly removed from the borrow site according to notes on the mining permit drawing provided by Mr. Vaughan. A windrow of topsoil is present just west of the excavated borrow area. The owner intends to reuse this topsoil in covering the CCB Structural Fill. Figure 4 — Soil Borrow Site looking South from North Edge. A topographic survey of the borrow site was conducted by Odom Land Surveying, and the existing site conditions are shown on this map in Appendix A. During the fall of 2007, the borrow site was being used to supply soil for a bridge reconstruction project on Highway 561. The North Carolina Department of Transportation (NCDOT) had recently surveyed in the borrow site as part of this project. Two benchmarks, labeled by the NCDOT, with GPS established elevations, were found at the borrow site. The benchmark used by Odom Land Surveying is identified on the topographic map in Appendix A. The site appears to satisfy Structural Fill siting criteria specified in Section .1704 of the rules 2.2 SOIL CONDITIONS Six hand auger borings were extended to determine the site soil and groundwater conditions. The hand auger borings were drilled at locations shown on the topographic map in Appendix A. Ground surface elevations at each boring location are provided on the boring logs in Appendix B. The most prevalent soil types were silty clayey fine to medium sands (classified as SC or SM according to the Unified Soil Classification System). Layers of silty clay (CL), silts (ML), or clean uniform sands (SP) were also encountered in the borings. Borings were typically extended 1 or 2 feet into the zone of saturation. PAC==m Prof d 00TBOVAV001Be d4Mu pemhpmpw MHlp yb1A Se dal UeeShe repM-m0l,d 2-3 SEMONTWO Sell and Groundwater CondlIdeas 2.3 GROUNDWATER CONDITIONS 3/4 — inch PVC observation wells were placed in each bore hole to allow subsequent water level measurements. Elevations, well dimensions, along with the depth and elevation of the water table measured on several dates are summarized in Table 1 in Appendix B. Groundwater flows in a north — northeasterly direction as shown on Figure 5 in Appendix B. Groundwater was encountered at depths ranging between about 2.1 and 4.5 feet below the ground surface in the six soil borings, as shown on the boring logs in Appendix B. Except in the stilling basin and drainage ditch at the northwest corner of the borrow site, water levels were typically more than 2 feet below the ground surface across the borrow pit bottom. Two stone check dams were constructed across a discharge channel extending northwest from the stilling basin. This discharge channel leads to an unnamed stream northwest of the borrow site. The stilling basin and check dams appear to be effectively operating as erosion control measures and can be maintained during structural fill placement. Water levels were recorded over a relatively short period of time. Much of North Carolina was experiencing a significant drought during the summer of 2007. Water levels may vary seasonally and with variations in precipitation. P1Pommon_PrgadsUWMOVAr 7SenaildeleehwepermHpropwelaVliphxay]OlNMBw OIUeeSRO MW-rw It 2-4 SEMINTHREE NoUllcations 3.1 NOTIFICATIONS ~ Section .1703 of the North Carolina Solid Waste Management 15A NCAC 13B Rules requires the following notifications: (1) The site is in an active soil borrow pit (licensed mining facility) situated at 4752 Highway 301, 4.4 miles south of Weldon, North Carolina, is proposed for use as a _ Structural Fill site, wherein Coal Combustion By -Products (CCB) will be beneficially used to restore the borrow pit to near it's original ground surface condition. The site is shown in Figure 1 on the Weldon, NC Quadrangle map. (2) Filling on the project site is expected to begin soon after receipt of a permit from the Solid Waste Section (expected in December 2007). Filling should be complete by September 2008. (3) The site CCB capacity is 64,000 cubic yards. (4) Toxicity Characteristic Leaching Procedure (TCLP) analysis for the CCB are in Appendix D. (5) The signed statement from the property owner accepting CCB use to fill the site is in Appendix D. (6) The name of the CCB generator is: Westmoreland Power 29 Power Place P. O. Box 351 Weldon, NC 27890 Don Keisling, General Manager Glenn Outland, Auxiliary Manager 252-536-3201 ext. 246 twPAC mh Pmjed WNOVA1 7 BenelkAY ash use hsmft geew 1"N Inmy W1 Mh Bmnfltlel Uee she ra ad-m0l. o 3-1 SEMINFOUR Structural Fill Facinly Development 4.1 STRUCTURAL FILL DEVELOPMENT Stormwater generated in the borrow area is contained within the site by the surrounding ground surface. Stormwater discharge is limited to an excavated channel leading northwest of an existing stilling basin at the northwest corner of the borrow site (Figure 2). Two stone check dams were previously constructed across this discharge channel, and still function in filtering sediment from discharging stormwater flow (Figure 3). Figure 6 in Appendix C provides the recommended final surface contours for the Structural Fill Facility. The site should be filled to a high point near the south center of the borrow area to elevation +88 to +90. The CCB surface should be graded to the contours shown on the drawing. Slopes ranging from 7% to 10% are recommended to minimize erosion during active filling. Filling to the contours shown on Figure 6 will provide site capacities shown in Table 2. Supporting calculations are provided in Appendix C. Table 2 Structural Fill Site Capacities CCB Volume 64,000 cubic yards 1 foot soil cover volume 7,500 cubic yards 6" topsoil cover volume 3,700 cubic yards The horizontal limit of the CCB fill is to remain well within the original borrow site limits in order to provide sufficient space for a perimeter stormwater control ditch. Figure 6 shows the bottom of the perimeter ditch slopes at 2.6% on all but the north side of the site, where the ditch bottom is flatter at a 1 % slope. Stormwater runoff and sedimentation controls have been provided for in sizing perimeter ditches, placement and sizing of rock check dams, and in sizing sediment traps near the northwest corner of the site. These features, combined with silt fences or earthen sediment traps near the active fill areas, should provide sufficient erosion control to limit sedimentation into the existing borrow site sediment trap. Appendix E includes the Erosion Control Plan for site development. The CCB should be moisture conditioned prior to transport, and truck boxes should be covered to control dust and spillage. The final 50-feet of gravel access road adjacent to Highway 301 should be surfaced with coarse aggregate (2" to 3" nominal size) to reduce tracking of soil onto the public right-of-way (see Erosion Control Plan in Appendix E). The CCB should be placed in the site beginning in the southeast corner, and proceeding toward the northwest, filling within the contours shown on Figure 6 in Appendix C. The CCB should be spread in lifts not exceeding 1 foot in thickness, and should be compacted using the spreading and hauling equipment. Active v areas in the structural fill should be kept as small as possible in order to reach final grades in portions of the site as soon as practical. Such areas can then be covered to minimize the open area subject to precipitation and wind erosion. umPAcommotipmledaQWMOVAUW7eemfldvash use PellpmWW flg9 ' W+Ash eemnddUse She repod.rea1.eoc4-1 KRIONFOUR Structural F111 Facility Development 4.1.1 Stormwater Control Prior to CCB placement an earthen containment berm at least 2 feet in height should be constructed between the stilling basin and the floor of the borrow area. Stormwater runoff from the active CCB filling area should be kept from entering the stilling basin through use of earthen filtering berms and/or silt fence as specified in the site Erosion Control Plan (See Appendix E). Soil cover should be placed over CCB slopes as soon as an area is filled to final grades in order to reduce CCB erosion and to minimize the amount of CCB sediment in perimeter ditches. Small earthen containment berms and/or silt fences should be constructed on the borrow site floor in advance of the northwesterly filing front. The earthen berms or silt fences will serve to reduce the migration of CCB sediment across the remaining borrow area floor, and keep CCB sediment from entering the stilling basin. 4.2 STRUCTURAL FILL FACILITY CLOSURE Areas in the CCB Structural fill that reach final grades should be covered with soil according to _ Section .1705 0) of the North Carolina Solid Waste Management 15A NCAC 13B Rules. Twelve inches of cover soil, plus six inches of topsoil capable of supporting vegetation, must be used to cap the structural fill facility. Final cover placement must be completed within 30 working (or 60 calendar) days, whichever is less, after CCB filling has ceased. Closure requirements include establishing vegetation as prescribed on Drawing Sheet 2 (Erosion Control Details) attached hereto. The owner is required to submit certification to the Division of Waste Management, signed and sealed by a registered professional engineer, confirming the requirements of Section .1706 of the North Carolina Solid Waste Management 15A NCAC 13B Rules have been met for the site. 4.3 RECORDATION OF STRUCTURAL FILL FACILITY Section .1707 of the North Carolina Solid Waste Management 15A NCAC 13B Rules requires the land owner to submit a notarized statement describing the volume and location of coal combustion products to the county Register of Deeds within 90 days after completion of the CCB filling project. This statement must be in the form prescribed by G.S. 47-38 through 47-43, and the Register of Deeds must notify the Waste Management Division of the date, book and page where the notice has been recorded. umPAOmmon Pmjxia�AROVAVW7 BeWdel e u permit pmp leVWftvry lotA Be del Um SMe repoA-meOl, 4-2 J APPENDIX A Structural Fill Site Topographic Map F mom / I !8 f r /& ' b ! n f i 3 / I / I I f� a m f! SS ib e / 8 o e h p � °v I O L O � J APPENDIX B Soil Boring Logs Table 1- Groundwater Level Summary Sheet Figure 5 - Groundwater Contour Map UV"�Cw'- BORING LOG: B-1 Mill Drill Date 09114107 Site Highway 301 Client Westmoreland Use Structural Fill Address Highway 301 - 4.5 miles south of Weldon, NC Total Depth it5.2 Drilling Method Hand Au er lBoring De th ft 5.2 Bohng Diam. in 1.25 Backfill Material 314" PVC NA Static Water Level 4' BGS Rmrks G. S. Elevation = 66.6 ITOC Elevation 67.44 Sample Method Continuous LD Well Well x m rn N o a E a 3 y m Soil Description 0.75'stick- p N a)[� U rn up 0 (SM-sc) Orange fine to coarse sand - trace silt, trace clay- moist 2 (SC-SM) Orange brown silly clayey fine to coarse sand -moist, 3 becoming wet @ 4' — c m n 0 w v c 0 4 (SP) Brown fine to coarse sand - wet - caving into bore hole 5 Not to Scale kNtes : Water Level in well 3.9'BGS on 9/20/07neer: Rich Lowe Driller: Rich Lowe C:\Documents and SeaingsVich IoweNly Documents\Roanoke Valley Energy\ROVA ash site on 30 kBoring Logs\B-I Page I of I U TlmdLa BORING LOG: B-2 Drill Date 09114107 Site Highway 301 Client Westmoreland jUse Ash Reuse Site Address Highway 301- 4.4 miles South of Weldon Total Depth ft 5.0 Drilling Method Hand Auger lBoring Depth ft 5.0 Boring Diam. in 1.25 Backfill Material 314" PVC Static Water Level 3' BGS Rmrks G. S. Elevation = 67.8 ITOC Elevation 68.48 ISample Method Continuous Well T `.. O to Dia ram s a n E- N �o y m E Soil Description 0.67'stick- 4)) a � � —�° � V to up o 0 (CL) Reddish brown silty sandy Gay 7 (SM-SC) Yellowish brown clayey silty fine to coarse sand with trace to some fine gravel - moist 2 (SC-SM) Brown silty clayey fine to coarse sand -wet @ 3' 3 - c m a a N N (CL) Varved Reddish brown silty clay with thin seams of gray silt - — moist o 4 (ML) Gray sandy silt with some clay -wet -soh 6 Not to Scale 6 Notes: Water Level in well 2.9' BGS on 9120107 Engineer. Rich Lowe Driller: Rich Lowe T:T,.i=moNCQ4757, LKK.¢ 6.,�a-1\B.wo/Io/2oo7t7:44 AM Page I of I BORING LOG: B-3 Drill Date 09/14/07 Site Highway 301 Client Westmoreland jUse Ash Reuse Site Address Highway 301- 4.4 miles South of Weldon Total Depth ft 5.6 Drilling Method Hand Auger lBoring Depth ft 5.6 Boring Diam. in 1.25 Backffll Material 314" PVC Static Water Level 2.818GS Rmrks G.S. Elevation ■ 63.2 TOC Elevation 63.87 Sam le Method Continuous Wall N to to 0 Diagram t a a E E£ m n 3 U to E C) Soil Description 0.56' stick- p rn Co y O o m U up 0 (SM-SC) Yellowish brown silly clayey fine to medium sand - moist 1 (ML) Gray silt 2 (SM-SC) Yellowish brown clayey silty fine to coarse sand - wet 3 CL) Soft wet gray to reddish brown silty clay n 0 SP) N n Brown wet fine to medium sand � 0 4 (ML) Gray silt 5 (SP-SM) Brown wet fine to medium sand - trace silt 6 — Not to Scale Notes: Water Level in well 2.7' BGS on 9120107 Engineer: Rich Lowe I Driller: - Rich Lowe rAhoh"(swcc4757,1,KK,4.ogs\B.3iBav0/70C00717:44AM Page I of I U BORING LOG: B-4 Drill Date 09114107 site Highway 301 Client Marbnoreland Use Ash Rouse Site Address Highway 301 - 4.4 miles South of Woklign Total Depth (ft) 5.5 Drilling Method Hand Auger 113oring Depth (ft) 5.5 Boring Diam. in 1.25 Backfill Material 314"PVC Static Water Level 4.2'BGS Rill G.S. Elevation = 64.8 ITOC Elevation 65.48. Sam ple Method Continuous a well Ci — - 2 ip a � E '('6 rn 0 M Co M E Soil Description Diagram stick- E D L) > UP'65' 0 x (SP) Yellowish brown to light brown silty fine to medium sand, trace of coarse sand, trace clay 2 X 3 Reddish brown mottled silty clayey sand - wet @ 4.2' (SM-SC) 4 Wet Light brown fine to coarse sand - trace silt X S (Sp-su) Not to Scale Notes: Water Level in well @ 3.95'BGS an 9120107 Engineer: Rich Lowe tMiler: Rich Lowe TAN.jr�(ANCl47 57, -KR,\l-.,,\6-416-4u 0/1 0/2007\7:44 AM Page I of I BORING LOG: B-5 Drill Date 09114107 . Site Highway 301 Client Westmoreland jUse Ash Reuse Site Address Highway 301- 4.4 miles South of Weldon Total Depth ft 5.0 Drilling Method Hand Au er 113oring Depth ft 5.0 Borir�g Diam. in 1.25 Backfill Material 314" PVC Static Water Level 4.6' BGS Rmrks G.S. Elevation = 67.3 TOC Elevation 56.92 Sample Method Continuous g Well n F 15 to rn N a Diagram 0.53'stick- n E m .5. o u m E Soil Desi:riptian rn 8m " �, o �, UP 0 (SM) Reddish brown silty fine sand trace clay 1 2 3 (SM-SC) Brown tine to medium sand, trace silt, trace clay t5 Y u m 0 z t 0 4 (SP-SM) Wet Light brown fine to coarse sand - trace sill, trace clay 5 6 Not to Scale Notes: Water Level in well 4.4' BGS on 9120107 Engineer: Rich Lowe Driller: Rich Lowe T:TrojectsMc 14757, LKli,\l.ugs\B-5�B.5v0n0/2007v:44 am Page I of I BORING LOG. B-6 IDrill Date 09114107 Site Highway 301 Client Hestritiorialand Use Ash Rouse SH& Address Highway 301 - 4.4 mHes South of Weldon Total Depth (11) 5.0 Driffing Method Hand Auger lBoring Depth (ft) 5.0 Boring Diam. in 1.25 Backfill Material 314"PVC Static Water Level 2.0'BGS Rmrks G.S. Elevation = 63.9 ITOC Elevation 64.77 ISam ple Method Continuous a — . Well C at (D (0rn Diagram E E Soil Description 0.7'stick- Z-0 Co up 0 (SP) Yellowish brawn fins to coarse sand 2 3 (CL) Gray to reddish brown silty sandy clay - wet :::it O Light brown siltyfine sand - wet (SM) Not to Scale Water Level in well @ Z I'BGS on 9/20/07 ! .r. .Ingoin. . Rich Lo" jDriller: Rich Lowe Al'OjmsVqC\-'4 757, LK R,T,,pMI-6\B 6\1 Oil 012007\7,43 AM Page I of I CQp 3w� JU4� N ODA m O W I $ E a nine 6a � nmmmom `m r �Q ci moo 600�v� �ommm � o 3 m m w u tO o ioNmmom N o o juo dM riee�i 3�q }j'OQ O A N NM V O O m1 m110 N N �O �0 A 3w°f Qom m Wrmr � �unQ v�i nideH I t0 �00 N 10 t0 �'q� m Q dL O d N O) t p W W c N 0 N ep {O {O �p i0 i0 r y W m M - m 'i I�pO aOZN c0 M W I I 1 C Y � 10 tA0 1M0 � Imp i0 � J oti ry �O W Cm a r $ omen NfOp C g m V e0 � tO tO N d d m j CO b Q i m N A A (O t0 N N f0 M O N r Y C 2 J 1 W O . w I� L , � W A c N m mm fb 45 m I I Q O U O h� g m L� c °p m r- a� c c. •• n 4; I I \ 1 °ro a.4.•q \ -. /,/y ,B0! !Be /flM4BiH J LO W UJ jr G h.-I j O LL � O 00 00 1WW m w m m ml m d yi Z zz m m n a w 0 N O � V y fill ip z0 0 IN�_ z N O ~ � � U rn x O CL U- fn J U ) Q a L Q~ U FL H 3 (2o O wp U J m ' Q W o Q Q X z z V) o U L J APPENDIX C Figure 6 - Final Contour Map Volume Calculation Summary Sheet _ rOC '�eM46rH ig n II I II y W Wq LL¢ U W II a a> N II CF W W z Cl) N W 2 p V rr¢ W H W U II (HHW 7>� �r wa cc 0 oC w.. I$I Hw0 LL aJy N N MUM C) W fo II I II II II II II I I I I I ! I I ssa I I s Y�y II e° .yye aeo.u.n o O yoy �D o. I I 1 r I \ \ \ I I i \ i I11 J c f0 Z cc I -I W l L � Q 2 f=e3 O U W a cr o W > U o�vi w o w s o w m m m m m m m m m ir U m ¢ w ¢ w 0 V=1 p � U m 3 m W W � > m O > z U W J a Z_ o 0: z l- 01 F O _ APPENDIX D Coal Ash TCLP Leaching Test Results Signed Landowner Agreement for Structural Fill Placement 201 West Clay Avenue / West Hazleton, PA 18202 L A B S I N C PHONE (570) 455-601 1 - FAX (570) 455-6321 www.hawkiT)tnlabs.com Certificate of Analysis -Customer:......W.estmoreland.-- LG&E- Partners Report.Date: . .... ...:August.20, 2007 Roanoke Valley Energy Facility Page I of I P.O. Box 351 Weldon, NC 27890 Material Tested: Fly Ash HawkMtnWO#: 0708-00329-001 Date Sampled: 08/03/2007 Time Sampled: 8:30 Sampler: Client Date Received: 08/08/2007 Sample Point ID: ROVA I Client Sample ID: ROVA I Fly Ash Test Name Test Results Method Technician Analysis Date Time TCLP, Extraction Fluid ID. I Fluid No. SW846-3010 MC 08/10/2007 13:22 Leachate, Ending pH 5.40 so SW846-9040 MC 09/1012007 13:22 Aluminum, leachate 9.87 mg/l SW846-6010B DDF 08/14/2007 18:00 Antimony, Leachate <0.05 mg/1 SW846-6010B DDF 09/1412007 18:00 Arsenic, Leachate 0.39 mg/l SW846-6010B DDF 08/14/2007 18:00 Barium, Leachate 0.348 mg/l SW846-6010B DDF 08/14/2007 18:00 Beryllium, Leachate 0.005 Mgt] SW846-601 OB DDF 08/14/2007 18:00 Cadmium, Leachate <0.005 mg/l SW846-6010B DDF 08/14/2007 18:00 *Boron, Leachate 6.09 mg/l SW846-6010B DDF 08/14/2007 18:00 Chromium, Leachate 0.030 mg/l SW846-6010B DDF 08/14/2007 18:00 Copper, Leachate <0.05 mg/1 SW846-6010B DDF 08/1412007 18:00 Alton, Leachate 7.07 mg/1 SW846-6010B DDF 08/14/2007 18:00 Lead, Leachate <0.05 mg/l SW846-6010B DDF 08114/2007 18:00 AManganese, Leachate 0.559 mg/1 SW846-6010B DDF 08/14/2007 18:00 AMercury, Leachate 0.003 mg/1 SW846-7470A DDF 08/14/2007 10:30 Molybdenum, Leachate 0.210 mg/l SW846-6010B DDF 08114/2007 18:00 Nickel, Leachate 0.053 mg/1 SW846-6010B DDF 08/14/2007 18:00 ASclenium, Leachate 0,60 mg/l SW846-6010B DDF 08/14/2007 18:00 ASilver, Leachate 0.040 mg/l SW846-601 OB DDF 08/14/2007 18:00 Tin, Leachate <0,050 mg/l SW846-601 OB DDF 08/14/2007 18:00 Thallium, Leachate <0.10 Mg/1 SW846-6010B DDF 08/1412007 18:00 Titanium, Leachate 0.104 mg/1 SW846-6010B DDF 08/14/2007 18:00 Zinc, Leachate 0.40 mg/l SW846-6010B DDF 08114/2007 18:00 These results relate only to the sample noted above. . Ronald A -A, Technical 1 Director on ae, ec ca c or Andrea Mengel, Enviroiunental Lab Coordinator This certificate is not to be reproduced except in full, without the written approval of HawkMtn Labs AcCoo. ISO 9001:2000 PA DEF 40-4171 REGISTERED COMPANY 4 1EPA PA00169 1 201 West Clay Avenue /West Hazleton. PA 18202 L A B S 1 N C PHONE (570) 455-601 1- FAX (570) 455-6321 www.i)awkmtnlabs.com Certificate of Analysis ......._........-Customer:.._.-Westmoreland--LG&E-Partners.. Report Date: _. August 20j72007 Roanoke Valley Energy Facility Page 1 of 1 P.O. Box 351 Weldon, NC 27890 Material Tested: Bottom Ash HawkMtn WO #: 0708-00329-002 _ Date Sampled: 08/03/2007 Time Sampled: 8:30 Sampler: Client Date Received: 08/08/2007 Sample Point ID: ROVA 1 Client Sample ID: ROVA I Bottom Ash Test Name Test Results Method Technician Analysis Date Time TCLP, Extraction Fluid ID. I Fluid No. SW846-3010 MC 08/10/2007 13:22 Leachate, Ending pH 4.99 su SW846-9040 MC 08/10/2007 13:22 Aluminum, leachate 0.71 mg/I SW846-6010B DDF 08/14/2007 18:00 _ Antimony, Leachate <0.05 mg/I SW846.6010B DDF 08/14/2007 18:00 Arsenic, Leachate <0.10 mg/I SW846-6010B DDF 08/14/2007 19:00 Barium, Leachate 0.618 mg/1 SW846-6010B DDF 08/14/2007 18:00 — Beryllium, Leachate 0.001 mg/l SW846-6010B DDP 09/14/2007 18:00 Cadmium, Leachate <0.005 mg/I SW846-6010D DDF 08/14/2007 18:00 Boron, Leachate 0.217 mg/1 SW846-6010B DDF 08/14/2007 18:00 — Chromium, Leachate <0.005 mg/l SW846.6010B DDF 08/14/2007 18:00 Copper, Leachate 0.22 mg/l SW846-6010B DDF 08/14/2007 18:00 Iron, Leachate 0.19 mg/I SW846-6010B DDF 08/14/2007 18:00 — Lead, Leachate <0.05 mg/I SW846-6010B DDF 08/14/2007 18:00 Manganese, Leachate 0.082 mg/I SW846-6010B DDF 08/14/2007 18:00 Mercury, Leachate <0.001 mg/I SW846-7470A DDF 08/14/2007 10:30 Molybdenum, Leachate <0.020 mg/I SW846-6010B DDF 08/14/2007 18:00 Nickel, Leachate <0.020 mg/l SW846-6010B DDF 08/14/2007 18:00 Selenium, Leachate <0.10 mg/1 SW846-6010B DDF 08/14/2007 18:00 Silver, Leachate <0.010 mg/I SW846.6010B DDF 08/14/2007 I8:00 — Tin, Leachate <0.050 Mgt[ SW846-6010B DDF 08/14/2007 18:00 Thallium, Leachate <0.10 mg/I SW846-6010B DDF 08/14/2007 18:00 Titanium, Leachate <0.020 mg/I SW846.6010B DDF 08/14/2007 18:00 — Zinc, Leachate 0.25 mg/I SW846-6010B DDF 08/14/2007 18:00 These results relate only to the sample noted above. Ronald Andrae, Technical Director This certificate is not to reproduced except in full, n without the written approval of HawkMtn Labs a7'0� Andrea Mengel, Environmental Lab Coordinator 01N ACCpgM IS0 9001:2000 u� PAOEP40.417 pEGISiEPEOCOMppNY _ _ EPA PA60169 6 1 201 west Clay Avenue /west Hazleton. PA 18202 L A B S 1 N C PHONE (570) 455-601 1• FAX (570) 455-6321 www.hawkmtnlabs.com Certificate of Analysis ........ Customer Westmoreland— -LG&E- Partners .._- _...... ..........Report -Date: -.....August.20 2007- Roanoke Valley Energy Facility Page 1 of 1 P.O. Box 351 Weldon, NC 27890 Material Tested: Fly Ash HawkMtn WO #: 0708-00329-003 Date Sampled: 08/03/2007 Time Sampled: 8:30 Sampler: Client Date Received: 08/OS/2007 Sample Point 1D: ROVA 11 Client Sample ID: ROVA H Fly Ash Test Name Test Results Method Technician Analysis Date Time TCLP, Extraction Fluid ID. 2 Fluid No. SW846-3010 MC 08/10/2007 13:22 Leachate, Ending pH 5.04 an SW846-9040 MC 08/102007 13:22 Aluminum, lembate 13.6 mg/I SW846-6010B DDF 08/14/2007 18:00 _ Antimony, Leachate 0.05 mg/1 SW846-601013 DDF 08/14/2007 18:00 Arsenic, Leachate 0.30 mg/I SW846.6010B DDF 08/14/2007 18:00 Barium, Leachate 0.783 mg/1 SW846-601013 DDF 08/14/2007 18:00 Beryllium, Leachate 0.008 mg/1 SW846.6010B DDF 08/14/2007 18:00 Cadmium, Leachatc <0.605 mg/1 SW846-6010B DDF 08/14/2007 18:00 Boron, Leachate 5.49 mg/1 SW846-6010B DDF 08/14/2007 18:00 '— Chromium, Leachate 0.028 mg/I SW846.6010B DDF 08/14/2007 18:00 Copper, Leachate <0.05 mg/I SW846-6010B DDF 08/14/2007 I8:00 Iron, Leachate 15.0 mg/I SW846.6010B DDF 08/14/2007 18:00 — Lead, Leachate <0.05 mg/l SW846-6010B DDF 08/14/2007 18:00 Manganese, Leachate 0.856 mg/l SW846.6010B DDF 08/14/2007 18:00 Mercury, Leachate 0.002 mg/l SW846-7470A DDF 08/14/2007 10:30 — Molybdenum, Leachate 0.145 mg/I SW846-6010B DDF 08/14/2007 18:00 Nickel, Leachate 0.111 mg/I SW846-6010B DDF 08/14/2007 18:00 Selenium, Leachate 0.48 mg/I SW846-6010B DDF 08/14/2007 18:00 Silver, Leachate 0.052 mg/I SW846-6010B DDF 08/14/2007 18:00 Tin, Leachate <0.050 mg/I SW846-6010B DDF 08/142007 18:00 Thallium, Leachate <0.10 mg/I SW846-6010B DDF 08/14/2007 18:00 Titanium, Leachate 0.128 mg/1. SW846.6010B DDF 08/14/2007 18:00 ' Zinc, Leachate 0.33 mg/I SW846-60I0B DDF 08/142007 18:00 These results relate only to the sample noted above. Ronald Andree, Technical Director This certificate is not toreproduced except in full, without the written approval of HawkMtn Labs Andrea Mengel, Environmental Lab Coordinator Q \[I RCCpgO 4. - e - PA0EP40.911 ISO 9001:2000 - EPA PA00169 pE0151EflE0 COMPANY < zo 1 West Clay Avenue /West Hazleton, PA 18202 L A B S 1 N C PHONE (570) 455-601 1- FAX (570) 455-6321 www.hawlcmtniabs.com Certificate of Analvsis .... -.... ..........Customer:..---Westmoreland--LCr&E- Partners- -..... _ _ . _..... __.Report --Date- - ---August..20 2007.. --.....-.. - ..----.... Roanoke Valley Energy Facility Page 1 of 1 P.O. Box 351 Weldon, NC 27890 Material Tested: Bottom Ash HawkMtn WO #: 0708-00329-004 _ Date Sampled: 08/03/2007 Time Sampled: 830 Sampler: Client Date Received: 08/08/2007 Sample Point ID: ROVA II Client Sample ID: ROVA II Bottom Ash Test Name Test Results Method Technician Analysis Date Time TCLP, Extraction Fluid ID. I Fluid No. SW846-3010 MC 08/10/2007 13:22 Leachate, Ending pH 4.99 su SW846-9040 MC 08/10/2007 13:22 Aluminum, leachate 0.87 mg/I SW846-6010B DDF 08/14/2007 18:00 — Antimony, Leachate <0.05 mg/I SW846-6010B DDF 08/142007 18:00 Arsenic, Leachate <0.10 mg/1 SW846-6010B DDF 08/142007 18:00 Barium, Leachate 0.859 mg/1 SW846-6010D DDF 08/142007 18:00 — Beryllium, Leachate 0.003 mg/I SW846-6010B DDF 08/14/2007 18:00 Cadmium, Leachate <0.005 mg/1 SW846-6010B DDF 08/14/2007 18:00 Boron, Leachate 0.572 mg/I SW846-6010B DDF 08/142007 18:00 — Chromium, Leachate 0.009 mg/I SW846.6010B DDF 08/142007 18:00 Copper, Leachate <0.05 mg/I SW846-6010B DDF 08/142007 18:00 Iron, Leachate 2.71 mg/I SW846-6010B DDF 08/14/2007 18:00 — Lead, Leachate <0.05 mg/I SW846.6010B DDF 08/14/2007 18:00 Manganese, Leachate 0.210 mg/1 SW846.6010B DDF 08/14/2007 18:00 Mercury, Leachate <0.001 mg/I SW846-7470A DDF 08/14/2007 10:30 Molybdenum, Leachate <0.020 mg/1 SW846-6010B DDF 08/142007 18:00 _ Nickel, Leachate 0,027 mg/l SW846.6010B DDF 08/142007 18:00 Selenium, Leachate <0.10 mg/I SW846-601013 DDF 08/14/2007 18:00 Silver, Leachate <0.010 mg/I SW846-6010B DDF 08/14/2007 18:00 — Tin, Leachate <0.050 mg/I SW846-601013 DDF 08/142007 18:00 Thallium, Leachate <0.10 mg/1 SW846-601013 DDF 08/14/2007 18:00 Titanium, Leachate <0.020 mg/l SW846-6010B DDF 08/142007 18:00 — Zinc, Leachate 1.10 mg/1 SW846-6010B DDF 08/142007 18:00 These results relate only to the sample noted above. Ronald Andree, Technical Director This certificate is not to reproduced except in full, n without the written approval of HawItlVltn Labs (�jw(,u,Q Andrea Mengel, Environmental Lab Coordinator 44'M YN AC CpgO9ry ` Iso 9001:2000 �° f PAOEP40.411 PE415PEPE�C�MP.INY �� -_ EPA PA00169 STATEMENT OF LAND OWNER Otis N. and Judith Vaughan, owner and developer of the land on which the structural fill is to be _ placed, hereby acknowledge and consent to the use of coal combustion by-products as structural fill and agree to record the fill statement with the register of deeds of Halifax County in accordance with Rule .1707 of the .1700 Regulations and in the form prescribed by G.S. 47-38 _ through G.S. 47-43. °7 )Signature of Land Owner(s) Date APPENDIX E Erosion Control Plan com x S-WN �Rq S - , sJ gN e RNon a ON I �o n oin �x QQ Sa ZZI 0. 9 G 45 p m� Rm 4 C704 o&m 0 N r /� lG� V00-• Om(1 g 3 �3 �tm+ mb O 0 S u om°g gg 6q 'S u p G $R D - 3� �o COM /f CA m J v n< o 208 n m F m 2 D O Ir Z m 0 n_ ` ,• a M Z O O Z ®a 1• i? i_ 9 Hi m. 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