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7302_DukeEnergy_Roxboro_DamSafetyReport_DIN25900_20160406 Contents 1 Purpose and Background 1  1.1 Purpose 1  1.2 Background 1  1.3 Approved Plans 1  2 Quality Assurance and Slope Stability 3  2.1 Introduction 3  2.2 Quality Assurance 3  2.3 Construction During 2015 4  2.4 Remaining Capacity 4  2.5 Incremental Development 4  2.6 Operations During 2015 4  3 Conclusions 6  4 References 7  Tables Table 1 Summary of 2015 In-Place Density Test Results Attachments Attachment 1 Approvals Attachment 2 Compaction Reports Attachment 3 Incremental Development Drawings Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page i Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 1 of 7 1 Purpose and Background 1.1 Purpose This report is being submitted in compliance with the requirements of the April 8, 2010 Certificate of Approval issued by the North Carolina Department of Environment and Natural Resources (NCDENR) (now the Department of Environmental Quality, NCDEQ) Land Quality Section for construction of Phases IV and V of the Roxboro Industrial Landfill, which is located within the watershed of the East Ash Basin Dam. The East Ash Basin Dam (State ID PERSO- 033-L) is regulated by the Division of Energy, Mineral and Land Resources, Land Quality Section under the North Carolina Dam Safety Rules (15A NCAC 2K) and is classified as a low hazard dam. The dam has not impounded water since the 1980s. The Certificate of Approval is presented in Attachment 1, along with subsequent relevant correspondence. Stipulation 3 of the Certificate of Approval requires the Engineer of Record to submit an annual progress report indicating that construction of landfill Phases IV and V (now referred to as Phases 4 and 5) is proceeding in accordance with “approved plans” (refer to Section 1.3). This progress report is for calendar year 2015. Copies of these annual progress reports are filed in the landfill’s operating record, along with construction certification reports, permits to operate, environmental monitoring data, and other relevant documents. 1.2 Background NCDENR Division of Waste Management Solid Waste Section (SWS) issued the original permit for the Roxboro Industrial Landfill in 1988 (Solid Waste Permit No. 7302-INDUS), which began as an unlined landfill. NCDENR SWS issued a Permit to Construct for lined Phases 1, 2 and 3 on June 22, 2002. The involvement of the North Carolina Dam Safety Program began approximately at the time the permit application for lined Phases 4 and 5 was submitted to NCDENR SWS. The Construction Plan for Phases 4 and 5 was reviewed and approved by the State Dam Safety Engineer (documented in the April 8, 2010 Certificate of Approval) prior to SWS issuing the Permit to Construct on May 28, 2010. The construction and filling of Phase 6, in accordance with the currently permitted design, was determined to fall outside the jurisdiction of the North Carolina Dam Safety Law of 1967 as documented by a May 14, 2013 letter from the State Dam Safety Engineer (presented in Attachment 1). The April 2013 Annual Engineer’s Progress Report states that this decision was based in part on the assumption that the peak elevation of Phase 6 would not exceed the peak permitted elevation of Phases 1 through 5, which at that time was 660 ft based on the 2010 approval of the Construction Plan for Phases 4 and 5 (refer to DIN 9106 in Section 1.3). Phases 1 through 5 have a single geomembrane liner with a leachate collection system. Phase 6 has a double geomembrane liner with leachate collection and leakage detection systems. More detailed descriptions of the engineering controls for Phases 1 through 5 and Phase 6 are presented in previous annual progress reports. 1.3 Approved Plans The purpose of this section is to document Amec Foster Wheeler’s understanding of “approved plans.” The table below is copied from the “List of Documents for Approved Plan” in the current Permit to Operate for the landfill, issued by NCDEQ on February 9, 2015, and includes the NCDEQ document identification number (DIN) of each document. Correspondence in the Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 2 of 7 original “List of Documents for Approved Plan” that did not result in or document any proposed or actual change to approved documents or site conditions has been omitted. DIN Description 10596 Certificate of Approval, Roxboro Plant East Ash Pond Dam, Phases IV and V Landfill (Proposed), Person County, State ID: PERSO-033-L. Letter to Progress Energy. Letter prepared by Division of Land Resources. April 8, 2010. 9106 Application for Permit Amendment, Construction Plan, Volumes 1, 2, and 3, Progress Energy, Roxboro Landfill, N.C. Solid Waste Permit Number 73-02, Phases IV & V. Prepared for Progress. Prepared by BlackRock Engineers, Inc. December 21, 2009, revised May 10, 2010 11344 Construction Quality Assurance Report, Roxboro Industrial Waste Landfill Facility, Lined Ash Monofill – SW Permit No. 73-02, Phase IV Construction. Prepared for Progress. Prepared by BlackRock Engineers, Inc. August 23, 2010. 13157 Construction Quality Assurance Report, Roxboro Industrial Waste Landfill Facility, Lined Ash Monofill – SW Permit No. 73-02, Phase V Construction. Prepared for Progress. Prepared by BlackRock Engineers, Inc.. March 4, 2011. 17252 Application for Permit Modification, Progress Energy Roxboro Lined Ash Monofill, NC Solid Waste Permit No. 73-02, Semora, North Carolina. Prepared for Progress Energy. Prepared by BlackRock Engineers, Inc. September 2012. 17741 Disposal Rate Criteria, Progress Energy Roxboro Lined Ash Monofill, NC Solid Waste Permit #73-02, Semora, North Carolina. Prepared by Progress Energy. November 2012. 19871 Attachment 6,- Monitoring Plan, Permit to Construct Application, Duke Energy Progress, Roxboro Lined Ash Monofill – Phase – 6, SW Permit No. 73-02. Prepared for Duke Energy Progress. Prepared by BlackRock Engineers, Inc. August 2013. 19596 Permit to Construct Application, Duke Energy Progress, Roxboro Lined Ash Monofill – Phase 6, Solid Waste Permit No. 73-02. Prepared for Duke Energy Progress. Prepared by BlackRock Engineers, Inc. August 2013. 22081 Phase 6A Permit to Operate Construction Quality Assurance Report. Prepared for Duke Energy Progress. Prepared by BlackRock Engineers, Inc. October 2014. Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 3 of 7 2 Quality Assurance and Slope Stability 2.1 Introduction Amec Foster Wheeler understands that the primary concern of the North Carolina Dam Safety Program is the slope stability of the East Ash Pond Dam and a secondary concern is the slope stability of the landfill. Slope stability analyses performed by Amec Foster Wheeler to directly address the primary and secondary slope stability concerns are contained in the annual progress report for calendar year 2014 (Reference 2). Section 2.2 of this report summarizes the compaction QA activities performed in 2015. No additional field explorations, laboratory testing, or slope stability analyses were needed for this report for calendar year 2015. 2.2 Quality Assurance Ongoing quality assurance activities consist of annual topographic survey updates and generally weekly compaction testing of coal combustion residuals (CCR) placed in the landfill. An update of the topographic survey was performed on April 1, 2015 and consisted of an aerial survey of the entire landfill. Compaction testing of landfilled CCR was performed generally weekly throughout the year by ESP Associates as a subcontractor to Charah. Inc. Amec Foster Wheeler reviewed the monthly reports prepared by ESP. As specified in the current version of the Implementation Plan - Landfill Operations (Rev. 3) dated August 2013, the compaction requirements differ for the outer shell and the interior landfill area. The outer shell is defined as material within 100 feet of the outer slopes of the landfill and this material is to be compacted to a minimum of 95% of the standard Proctor maximum dry density (ASTM D698). Compaction testing was generally performed once per week in accordance with the Implementation Plan (Reference 1). Within the area defined as the shell, in- place density tests were performed at a spacing of approximately 100 feet on center during each weekly visit. The interior CCR material is to be compacted to meet a minimum of 90% of the standard Proctor maximum dry density (ASTM D698). For the area defined as the interior, in-place density tests were performed at a spacing of approximately 150 feet on center during each weekly visit. ESP performed a total of 261 in-place density tests for the 373,157 tons of CCR that were landfilled, for an average rate of 1 in-place density test per 1,400 tons. For the 188 “interior” density tests performed, the average degree of compaction was 95.2% of standard Proctor maximum dry density, thus exceeding the required minimum of 90%. For the 73 “shell” density tests performed, the average degree of compaction was 98.5% of standard Proctor maximum dry density, thus exceeding the required minimum of 95%. In accordance with the Implementation Plan - Landfill Operations, at least one standard Proctor was performed for every 25,000 CY (or tons) of CCR placed. ESP performed 29 Proctors for the 373,157 tons of CCR that were landfilled, for an average rate of 1 Proctor per 13,000 tons. Variability in coal mineral composition and in the performance of the boiler units results in variability of the CCR materials and the resulting maximum dry density of material landfilled. One point Proctor tests are routinely performed in the field to gain an indication of which laboratory Proctor test corresponds with the material being tested. ESP performed a total of 46 one-point Proctors in 2015. Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 4 of 7 Monthly reports of in-place density testing and Proctor testing are included in Attachment 2. A summary of in-place density test results is presented in Table 1 below. Table 1. Summary of 2015 In-Place Density Test Results Parameter 2015 In-Place Density Test Results Dry Density-Mean (pcf) 68.0 Standard Deviation 2.87 Dry Density-Minimum (pcf) 59.4 Dry Density-Maximum (pcf) 72.2 Mean Compaction (% of max. dry density) 96.1% 2.3 Construction During 2015 Phase 6A (now referred to as Phase 6) construction was completed in October 2014. Upon additional examination of record surveys, it was observed that the compacted soil liner in the northwest corner of Phase 6, which was intended to overlap the existing liner system of Phases 3 and 4, stopped approximately 10 feet short of the intended overlap within an area approximately 200 feet wide. To achieve full coverage of compacted soil liner within the non- overlapping area of Phase 6, construction was performed in April and May of 2015. The compacted soil liner was extended and the overlying layers of the liner system (i.e., primary and secondary geomembranes and drainage geocomposites) were reinstalled in the affected area. The construction work and associated quality assurance activities are documented in the certification report for the project (Reference 3). 2.4 Remaining Capacity In addition to the recently constructed Phase 6, there is permitted capacity remaining in Phases 1 through 5 as well. Phases 1 through 6 are expected to reach capacity as early as June 2018. The actual disposal rate depends on plant operation and percentage of byproduct produced that is beneficially reused in lieu of disposal. 2.5 Incremental Development The owner’s representative provides incremental Operation and Construction Plans to the contractor to guide the incremental filling of the landfill. The plans are prepared to avoid temporary conditions that would be less stable than indicated by calculated factors of safety for final conditions. The Phase 4H incremental development drawings are provided in Attachment 3. Drawings for Phase 6A, mentioned in Section 2.6, are not included because Phase 6 is not under the jurisdiction of the North Carolina Dam Safety Law of 1967. 2.6 Operations During 2015 The location of landfill operations is referred to by the designation of the corresponding incremental operation plan (or lift plan). At the beginning of 2015, landfill operations were being completed in Phase 4G and beginning in Phase 4H. In June 2015, Phase 4H was completed at an intermediate elevation of approximately 604 feet, and filling began in Phase 6A. Intermediate Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 5 of 7 cover soil was placed on all areas of Phase 4H not yet covered, and an extension of downpipe DP-5 was installed. Filling continued in Phase 6A for the remainder of 2015, resulting in the majority of the Phase 6 floor being covered with an initial lift of CCR up to approximately 10 feet thick. Since early 2011, the Phase 3 area has been at an intermediate elevation of approximately 604 feet with intermediate soil cover and stormwater management features installed and maintained. Based on site records, a total of 373,157 tons of CCR were disposed in the lined landfill during 2015. At an estimated total unit weight of 1.2 tons per cubic yard, the estimated landfill volume consumed in 2015 was 311,000 cubic yards. Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 6 of 7 3 Conclusions As in previous years, a quality assurance program has been implemented for CCR landfilled during 2015. The intent of the quality assurance program, to verify that slope stability is being maintained and that the basis for the 2010 Certificate of Approval remains valid, has been achieved. The results of in-place density testing performed throughout 2015 indicate compliance with the compaction requirements contained in the Implementation Plan – Landfill Operations for the Roxboro Industrial Landfill. Annual Progress Report for Dam Safety Certificate of Approval March 2016 Page 7 of 7 4 References 1. “Implementation Plan – Landfill Operations, Duke Energy Progress-Roxboro Steam Electric Plant, Roxboro Lined Ash Monofill, Person County, North Carolina, Permit No. 73-20,” Rev. 3, prepared by BlackRock Engineers, Inc., August 2013. 2. “Annual Progress Report for Dam Safety Certificate of Approval, Roxboro Lined Ash Monofill, NC Solid Waste Permit 7302-INDUS, NC Dam ID: PERSO-0330L,” prepared by Amec Foster Wheeler, April 1, 2015. 3. “Roxboro Lined Ash Monofill Certification Report for Phase 6A Compacted Soil Liner Extension,” prepared by Amec Foster Wheeler, June 1, 2015. Annual Progress Report for Dam Safety Certificate of Approval Attachments Annual Progress Report for Dam Safety Certificate of Approval Attachment 1 Approvals NCDENR North Carolina Department of Environment and Natural Resources Division of Land Resources Land Quality Section James D.Simons,PG,PE Beverly Eaves Perdue,Governor Director and State Geologist Dee Freeman,Secretary Certificate of Approval April 8,2010 CERTIFIED MAIL RETURN RECEIPT Mr.Fred Holt Progress Energy Carolinas,Inc. Environmental,Health and Safety Services Section POBoxl551PEB4 Raleigh,NC 27602 Re:Roxboro Plant East Ash Pond Dam Phases IV and V Landfill (Proposed) Person County State ID:PERSO-033-L Dear Mr.Holt: This is in response to your submission received on January 29,2010 of plans, specifications and design data for construction ofPhases IV and V of a proposed landfill at the subject plant site known as the Roxboro Landfill.This submittal was made in compliance with the Dam Safety Law of 1967.The plans,specifications and design data submitted were prepared under the supervision of Mr.Gary W.Ahlberg,PE and Mr. Gregory G.Mills,PE. The Roxboro Landfill area when completed will encompass approximately 71 acres constructed in five phases.This Landfill is contained within the watershed of the East Ash Pond Dam which has been determined to be of low hazard classification.The northern fill slope toe of the Phases IV and V Landfill will be approximately 700 feet upstream from the crest ofthe East Ash Pond Dam which is centered at Latitude:36.4807 degrees,Longitude:-79.0668 degrees. This letter constitutes approval of the proposal to modify the subject dam according to the plans and specifications received by this Division on January 29,2010 with the following stipulations: 1612 Mail Service Center,Raleigh,North Carolina 27699-1612 •Telephone 919-733-4574 /FAX:919-733-2876 512 North Salisbury Street,Raleigh,North Carolina,27604 •lntemet:http://www.dlr.enr.state.nc.us/pages/landqualitysection.html Mr.Fred Holt Roxboro Plant East Ash Pond Dam Phases IV and V Landfill (Proposed) April 8,2010 Page 2 of 3 1.Project construction shall be supervised by Mr.Gary W.Ahlberg,PE and Mr.Gregory G. Mills,PE.Mr.Gary W.Ahlberg,PE and Mr.Gregory G.Mills,PE shall be responsible for field observation of construction as necessary to ensure compliance with approved plans. 2.During construction, the Division of Land Resources may require such progress reports as are deemed necessary. 3.In accordance with GS 143-215.29 and NCAC 15A-2K .0203,.0215,and .0212,Mr. Gary W.Ahlberg,PE and Mr.Gregory G.Mills,PE shall submit each year on the date of this approval a progress report indicating that construction is proceeding in accordance with approved plans.Within 30 days of final completion of the project,Mr.Gary W. Ahlberg,PE and Mr.Gregory G.Mills,PE shall inspect the completed work and upon finding that the work has been done as specified and the dam is safe,shall file with the Division of Land Resources two sets of record drawings and a certificate stating that the work has been completed in accordance with approved plans,specifications and other requirements. 4.Final approval by the Division ofLand Resources for operation ofthis dam pursuant to record drawing and final certification submittal will be required. 5.You must notify Mr.John Holley,PE,Regional Engineer,Land Quality Section,1628 Mail Service Center,Raleigh,North Carolina 27699-1628 or 3800 Barrett Drive,Raleigh North Carolina 27609,telephone number (919)791-4200 ten days before the start of construction. The Army Corps of Engineers and the Water Quality Section of this Department should be contacted to determine if additional permits are required.Also,the erosion and sediment control program having jurisdiction should be contacted to determine permit requirements.In any case, sediment must be prevented from entering the waters of the state or flowing onto neighboring property.Should this dam be approved by the Division of Land Resources for decommissioned status,this approval will no longer be in effect and there will no longer be a requirement to meet stipulations of this approval. Construction of the modifications must begin within one year ofthe date ofthis letter or this approval is void.For assistance you may contact the Raleigh Regional Office at (919)791-4200 or a staffmember of the Dam Safety Program in the Raleigh Central Office at telephone number (919)733-4574. Sincerely, Steven M.McEvoj State Dam Safety Eri^ifceer Mr.Fred Holt Roxboro Plant East Ash Pond Dam Phases IV and V Landfill (Proposed) April 8,2010 Page 3 of3 cc:Mr.Gary W.Ahlberg,PE Mr.Gregory G.Mills,PE Mr.John Holley,PE,Regional Engineer Surface Water Protection Regional Supervisor Mr.Dexter Matthews,Division of Waste Management File name:PERSO-033 20100408 COAM RoxboroEastAshPond.doc NCDENR North Carolina Department ofEnvironment and Naturai Resources Pat McCrory Donald van der Vaart Governor Secretary March 16,2015 Mr. George Hamrick Vice President Duke Energy 400 South Tryon Street P.O Box 1321,ST03H Charlotte,NC 28202 RE:Roxboro East Ash Pond Dam Engineer ofRecord Change Person County State Dam ID:PERSO-033 Dear Mr.Hamrick: Thisletteris in responseto yourletterdatedNovember 11,2014 requesting a changeofEngineer ofRecord forthe subject damas designatedin the Certificate ofApprovalto Modifydated April 8,2010 (Phases IVand V Landfill Proposed).ThisApprovalto Modifynamestheengineersof record as Mr. Gary W. Ahlberg, PE and Mr. Gregoiy G. Mills. This letterconstitutesapprovalto designateMr.ThomasMaier,PE as engineer ofrecord, replacingboth Mr.Ahlbergand Mr.Mills. Mr.Maiermustadhereto all conditionsand stipulations ofthe April 8, 2010 Approval to Modify. Sincerely, Steven M.Mc^v£^PE State Dam Safety Engineer Land Quality Section cc: Mr.Thomas Maier,PE,AMEC Environment &.Infrastructure Ms. Kim Hutchinson,Duke Energy Division ofEnergy,Mineral,and Land Resources Energy Section •Geological Sunrey Section •Land Quality Section 1612 Mail Service Center,Raleigh,North Carolina 27699-1612 •919-707-92001 FAX:919-715-8801 512 North Salisbury Street,Raleigh,North Carolina 27604 •Internet:httD://Dortal.ncdenr.oro/web/lr/ An Equal Opportunity \Affirmative Action Employer -50%Recycled \10%PostConsumer Paper Mr.George Hamrick Roxboro EastAshPondDam Engineer of Record Change PERSO-033 March 16,2015 Page 2 of2 Mr.John Holley, PE, LandQuality Regional Supervisor Surface Water Protection Supervisor Filename:PERSO-033_20I503I6_EOR Change_Roxboro EastAshPondDam Annual Progress Report for Dam Safety Certificate of Approval Attachment 2 Compaction Reports 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report January 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities includes: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 0 34,133.66 34,133.66 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 11,300.00 11,300.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 January 2015 Facility Totals 0 45,433.66 45,433.66 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors H 6-7. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, thirty one (31) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation Test ID Location Elevation 80* Cell H-6 581.4 90* Cell H-6 584.9 100 Cell H-7 581.4 81* Cell H-6 581.7 91 Cell H-6 584.4 101 Cell H-6 584.7 82* Cell H-6 581.2 92 Cell H-7 583.3 102* Cell H-6 587.7 83* Cell H-6 581.2 93 Cell H-7 582.3 103* Cell H-6 587.9 84 Cell H-6 579.5 94 Cell H-7 579.7 104* Cell H-6 587.5 85 Cell H-7 578.3 95* Cell H-6 586.5 105 Cell H-6 587.7 86 Cell H-7 580.1 96* Cell H-6 585.7 106 Cell H-6 585.9 87 Cell H-6 580.8 97* Cell H-6 585.9 107 Cell H-6 585.8 88* Cell H-6 584.7 98 Cell H-6 586.9 108 Cell H-7 586.1 89* Cell H-6 584.8 99 Cell H-6 585.2 109 Cell H-7 584.5 * Shell Test Location 110 Cell H-7 583.6 All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated February 2, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Three (3) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Tim Russell, Duke Energy Jeff Newell, Duke Energy Kim Hutchinson, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Justin Mize, Charah Rob Long, Charah Matthew Morris, Charah Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Ja n u a r y  20 1 5  To n n a g e  Su m m a r y DF A  to  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 0 . 0 0 0 . 0 0 N / A N / A 0 . 0 0 2n d   12 5 6 . 2 4 1 0 6 0 . 0 0 0 . 0 0 P 4 H 5 ,  H6 ,  H7 2316.24 3r d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 4t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 5t h   13 7 3 . 5 0 11 4 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2513.50 6t h   97 7 . 3 8 13 2 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2297.38 7t h   12 4 5 . 8 0 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 1245.80 8t h   12 2 4 . 6 2 13 6 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2584.62 9t h   22 2 1 . 0 4 98 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 3201.04 10 t h   25 8 0 . 0 6 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2580.06 11 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 12 t h   25 6 2 . 0 0 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2562.00 13 t h   28 3 9 . 5 2 24 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 3079.52 14 t h   12 1 4 . 1 0 10 0 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2214.10 15 t h   27 7 7 . 4 6 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2777.46 16 t h   29 6 8 . 2 4 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2968.24 17 t h   10 5 0 . 9 2 54 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 1590.92 18 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 19 t h   16 2 2 . 8 4 10 0 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2622.84 20 t h   16 2 0 . 6 4 86 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 2480.64 21 s t   0. 0 0 74 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 740.00 22 n d   98 9 . 2 0 92 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 1909.20 23 r d   40 1 . 1 8 14 0 . 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 541.18 24 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 25 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 26 t h   81 7 . 9 4 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 817.94 27 t h   92 7 . 5 8 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 927.58 28 t h   13 4 2 . 0 6 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 1342.06 29 t h   84 1 . 6 8 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 841.68 30 t h   12 7 9 . 6 6 0. 0 0 0. 0 0 P4 H5 ,  H6 ,  H7 1279.66 31 s t   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 MT D 34 , 1 3 3 . 6 6 11 , 3 0 0 . 0 0 0. 0 0 YT D 34 , 1 3 3 . 6 6 11 , 3 0 0 . 0 0 0. 0 0 Ro x b o r o  To n n a g e  Su m m a r y   Ja n u a r y ‐15 Da t e La n d f i l l e d 45 , 4 3 3 . 6 6 45 , 4 3 3 . 6 6 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com February 2, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES January 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of January 1 through January 31, 2015. During this reporting period, an ESP representative visited the site and performed thirty-one (31) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – January 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill February 2, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. Please note that on January 28, 2015, the result of our one-point Standard Proctor field test of ash sample material obtained near the location of Test #102 indicated an interpreted maximum dry density of 69.7 pounds per cubic foot (pcf) based on the Standard Proctor laboratory test (S-11) previously performed by ESP. This interpreted maximum dry density was anticipated to be used for the remainder of our tests on that date. The results of our subsequent field nuclear gauge density tests and laboratory moisture content testing on that date resulted in calculated in-place dry densities ranging from 68.6 to 76.0 pcf indicating compaction ranging from 98 to 109 percent of the materials interpreted maximum dry density. Variability of the in-place ash materials indicating a change in field conditions was not apparent until the results of the laboratory moisture contents were available. The highest maximum dry density of ESP’s laboratory Standard Proctor testing was utilized for the remainder of the tests as shown on the attached “Nuclear Gauge Test Report” indicating the ash materials were compacted to 95 to 105 percent. Further analyzing the results and utilizing historic Standard Proctor test results performed by others, the material represented by Test Nos. 103 to 110 may be better represented by Geotechnics Proctor 602-04-01 which had a maximum dry density of 76.6 pcf. If this Standard Proctor result is used to evaluate the results of ESP’s testing, it indicates the material represented by Test Nos. 103 to 110 is compacted to 90 to 99 percent of the material’s maximum dry density which is more consistent with the results of our previous testing at this site. During this period, ESP obtained four (3) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations Field Density and Laboratory Testing Services – January 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill February 2, 2015 3 and Northing/Easting coordinates were provided by Charah field personnel at the time of testing with the exception of the testing on January 6, 2015 when locations were not available as the GPS system at the site was not functioning. The coordinates and elevations of our other test dates during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Locations One Point Plots – January 2015 Moisture-Density Relationship (S-7 and S-10 through S-12) Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 80 Landfill - Shell: Cell H-6 (See attached sketch dated 1-6-15)581.4 Landfill Shell 1149 BOSNAK, Jesse 81 Landfill - Shell: Cell H-6 (See attached sketch dated 1-6-15)581.7 Landfill Shell 1149 BOSNAK, Jesse 82 Landfill - Shell: Cell H-6 (See attached sketch dated 1-6-15)581.2 Landfill Shell 1149 BOSNAK, Jesse 83 Landfill - Shell: Cell H-6 (See attached sketch dated 1-6-15)581.2 Landfill Shell 1149 BOSNAK, Jesse 84 Landfill: Cell H-6 (See attached sketch dated 1-6-15)579.5 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 85 Landfill: Cell H-7 (See attached sketch dated 1-6-15)578.3 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 86 Landfill: Cell H-7 (See attached sketch dated 1-6-15)580.1 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 87 Landfill: Cell H-6 (See attached sketch dated 1-6-15)580.8 Greater than 100 ft. from crest 1149 BOSNAK, Jesse Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 80 1/6/15 S-1 A F Ash 38.3 67.2 38.7 64.4 6 96 95 81 1/6/15 S-1 A F Ash 38.3 67.2 38.8 65.1 6 97 95 82 1/6/15 S-1 A F Ash 38.3 67.2 33.2 63.6 6 95 95 83 1/6/15 S-1 A F Ash 38.3 67.2 34.8 64.0 6 95 95 84 1/6/15 S-1 A F Ash 38.3 67.2 30.1 66.9 6 100 90 85 1/6/15 S-1 A F Ash 38.3 67.2 36.3 65.7 6 98 90 86 1/6/15 S-1 A F Ash 38.3 67.2 32.7 61.0 6 91 90 87 1/6/15 S-1 A F Ash 38.3 67.2 34.3 60.9 6 91 90 Page 1 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 2/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 88 Landfill - Shell: Cell H-6 (See attached sketch dated 1-15-15)584.7 Landfill Shell 596 BOSNAK, Jesse 89 Landfill - Shell: Cell H-6 (See attached sketch dated 1-15-15)584.8 Landfill Shell 596 BOSNAK, Jesse 90 Landfill - Shell: Cell H-6 (See attached sketch dated 1-15-15)584.9 Landfill Shell 596 BOSNAK, Jesse 91 Landfill: Cell H-6 (See attached sketch dated 1-15-15)584.4 Greater than 100 ft. from crest 596 BOSNAK, Jesse 92 Landfill: Cell H-7 (See attached sketch dated 1-15-15)583.3 Greater than 100 ft. from crest 596 BOSNAK, Jesse 93 Landfill: Cell H-7 (See attached sketch dated 1-15-15)582.3 Greater than 100 ft. from crest 596 BOSNAK, Jesse 94 Landfill: Cell H-7 (See attached sketch dated 1-15-15)579.7 Greater than 100 ft. from crest 596 BOSNAK, Jesse 95 Landfill - Shell: Cell H-6 (See attached sketch dated 1-22-15)586.5 Landfill Shell 596 BOSNAK, Jesse Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 88 1/15/15 S-3 A B Ash 37.0 66.2 38.9 66.6 6 101 95 89 1/15/15 S-3 A B Ash 37.0 66.2 37 65.7 6 99 95 90 1/15/15 S-3 A B Ash 37.0 66.2 34.3 65.0 6 98 95 91 1/15/15 S-3 A B Ash 37.0 66.2 31.3 63.0 6 95 95 92 1/15/15 S-3 A B Ash 37.0 66.2 33.7 60.1 6 91 90 93 1/15/15 S-3 A B Ash 37.0 66.2 36.6 65.4 6 99 90 94 1/15/15 S-3 A B Ash 37.0 66.2 39.3 59.8 6 90 90 95 1/22/15 S-11 A F Ash 35.7 69.7 34.4 69.0 6 99 95 Page 2 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 2/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 96 Landfill - Shell: Cell H-6 (See attached sketch dated 1-22-15)585.7 Landfill Shell 596 BOSNAK, Jesse 97 Landfill - Shell: Cell H-6 (See attached sketch dated 1-22-15)585.9 Landfill Shell 596 BOSNAK, Jesse 98 Landfill: Cell H-6 (See attached sketch dated 1-22-15)586.9 Greater than 100 ft. from crest 596 BOSNAK, Jesse 99 Landfill: Cell H-6 (See attached sketch dated 1-22-15)585.2 Greater than 100 ft. from shell 596 BOSNAK, Jesse 100 Landfill: Cell H-7 (See attached sketch dated 1-22-15)581.4 Greater than 100 ft. from crest 596 BOSNAK, Jesse 101 Landfill: Cell H-6 (See attached sketch dated 1-22-15)584.7 Greater than 100 ft. from crest 596 BOSNAK, Jesse 102 Landfill - Shell: Cell H-6 (See attached sketch dated 1-28-15)587.7 Landfill Shell 1026 SCAFF, Clyde 103 Landfill - Shell: Cell H-6 (See attached sketch dated 1-28-15)587.9 Landfill Shell 1026 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 96 1/22/15 S-11 A F Ash 35.7 69.7 37.7 66.5 6 95 95 97 1/22/15 S-11 A F Ash 35.7 69.7 30.6 69.5 6 100 95 98 1/22/15 S-11 A F Ash 35.7 69.7 30 65.7 6 94 90 99 1/22/15 S-11 A F Ash 35.7 69.7 34.3 63.5 6 91 90 100 1/22/15 S-11 A F Ash 35.7 69.7 34.7 62.4 6 90 90 101 1/22/15 S-11 A F Ash 35.7 69.7 42 62.6 6 90 90 102 1/28/15 S-11 A F Ash 35.7 69.7 42 66.8 6 96 95 103 1/28/15 S-7 A F Ash 32.4 72.2 20 72.6 6 101 95 Page 3 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 2/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 104 Landfill - Shell: Cell H-6 (See attached sketch dated 1-28-15)587.5 Landfill Shell 1026 SCAFF, Clyde 105 Landfill: Cell H-6 (See attached sketch dated 1-28-15)587.7 Greater than 100 ft. from crest 1026 SCAFF, Clyde 106 Landfill: Cell H-6 (See attached sketch dated 1-28-15)585.9 Greater than 100 ft. from crest 1026 SCAFF, Clyde 107 Landfill: Cell H-6 (See attached sketch dated 1-28-15)585.8 Greater than 100 ft. from crest 1026 SCAFF, Clyde 108 Landfill: Cell H-7 (See attached sketch dated 1-28-15)586.1 Greater than 100 ft. from crest 1026 SCAFF, Clyde 109 Landfill: Cell H-7 (See attached sketch dated 1-28-15)584.5 Greater than 100 ft. from crest 1026 SCAFF, Clyde 110 Landfill: Cell H-7 (See attached sketch dated 1-28-15)583.6 Greater than 100 ft. from crest 1026 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 104 1/28/15 S-7 A F Ash 32.4 72.2 20.8 74.5 6 103 95 105 1/28/15 S-7 A F Ash 32.4 72.2 30.3 75.9 6 105 90 106 1/28/15 S-7 A F Ash 32.4 72.2 29.1 72.0 6 100 90 107 1/28/15 S-7 A F Ash 32.4 72.2 40.4 68.6 6 95 90 108 1/28/15 S-7 A F Ash 32.4 72.2 26.4 72.7 6 101 90 109 1/28/15 S-7 A F Ash 32.4 72.2 35.3 76.0 6 105 90 110 1/28/15 S-7 A F Ash 32.4 72.2 43.3 74.0 6 102 90 Page 4 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 2/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-7 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/4/14 Sample No: S-7 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/3/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5424 5490 5545 5655 5654 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1209 1275 1330 1440 1439 Weight of Soil in Mold (lbs)2.665 2.811 2.932 3.175 3.172 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.3 84.7 88.3 95.6 95.6 Moisture Can No X R V T G Weight of Can 134.92 134.72 134.84 135.08 135.74 Weight of Wet Soil & Can 481.5 486.22 514.81 610.15 634.67 Weight of Dry Soil & Can 425.08 418.82 433.46 493.96 498.42 Weight of Water 56.42 67.4 81.35 116.19 136.25 Weight of Dry Soil 290.16 284.1 298.62 358.88 362.68 Moisture Content (%)19.44%23.72%27.24%32.38%37.57% Dry Unit Weight (pcf)67.2 68.4 69.4 72.2 69.5 Comments: Tony Summers AMRL - N/A 12/4/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/4/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 56.6 Zero Air Voids Curves For Gs = 2 6 - 2 8 49.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-10 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 / 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4734 Roxboro Ash Density Testing Date: 1/2/15 Sample No: S-10 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 1/2/2015 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5390 5465 5490 5496 5318 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1175 1250 1275 1281 1103 Weight of Soil in Mold (lbs)2.590 2.756 2.811 2.824 2.432 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)78.0 83.0 84.7 85.1 73.2 Moisture Can No B F I H V Weight of Can 134.89 135.01 135.43 134.97 134.67 Weight of Wet Soil & Can 629.86 647.58 676.94 604.74 509.6 Weight of Dry Soil & Can 486.28 483.13 496.83 440.82 407.22 Weight of Water 143.58 164.45 180.11 163.92 102.38 Weight of Dry Soil 351.39 348.12 361.4 305.85 272.55 Moisture Content (%)40.86%47.24%49.84%53.59%37.56% Dry Unit Weight (pcf)55.4 56.4 56.5 55.4 53.2 Comments: Tony Summers AMRL - N/A 1/2/2015 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 1/2/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 69.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 35.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-11 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 / 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4742 Roxboro Ash Density Testing Date: 1/9/15 Sample No: S-11 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 1/8/2015 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5487 5566 5645 5641 5630 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1272 1351 1430 1426 1415 Weight of Soil in Mold (lbs)2.804 2.978 3.153 3.144 3.119 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)84.5 89.7 95.0 94.7 94.0 Moisture Can No S A V T R Weight of Can 135.41 135.07 134.74 135.09 135.78 Weight of Wet Soil & Can 543.02 687.54 637.69 765.17 462.07 Weight of Dry Soil & Can 450.88 553.13 503.32 589.75 365.84 Weight of Water 92.14 134.41 134.37 175.42 96.23 Weight of Dry Soil 315.47 418.06 368.58 454.66 230.06 Moisture Content (%)29.21%32.15%36.46%38.58%41.83% Dry Unit Weight (pcf)65.4 67.9 69.6 68.3 66.2 Comments: Tony Summers AMRL - N/A 1/9/2015 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 1/9/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.9 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.6 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-12 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 / 1 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4748 Roxboro Ash Density Testing Date: 1/17/15 Sample No: S-12 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 1/16/2015 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5516 5593 5642 5638 5636 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1301 1378 1427 1423 1421 Weight of Soil in Mold (lbs)2.868 3.038 3.146 3.137 3.133 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)86.4 91.5 94.8 94.5 94.4 Moisture Can No S A G V T Weight of Can 135.28 135.02 135.17 134.7 135.05 Weight of Wet Soil & Can 532.58 580.52 590.56 630.24 561.03 Weight of Dry Soil & Can 434.85 463.95 466.09 489.32 430.13 Weight of Water 97.73 116.57 124.47 140.92 130.9 Weight of Dry Soil 299.57 328.93 330.92 354.62 295.08 Moisture Content (%)32.62%35.44%37.61%39.74%44.36% Dry Unit Weight (pcf)65.1 67.6 68.9 67.6 65.4 Comments: Tony Summers AMRL - N/A 1/17/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 1/17/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2015 9/30/2014 7A-21/30/2014 Position Date Test #Northing Easting Elevation ft 1/15/2015 88 993416.283 1981827.753 584.7 1/15/2015 89 993326.155 1981785.747 584.9 1/15/2015 90 993243.942 1981728.264 584.9 1/15/2015 91 993250.996 1981853.695 584.4 1/15/2015 92 993107.565 1981896.361 583.3 1/15/2015 93 993059.590 1981747.382 582.3 1/15/2015 94 992956.722 1981920.464 579.7 1/22/2015 95 993356.103 1981816.141 586.5 1/22/2015 96 993272.418 1981747.046 585.7 1/22/2015 97 993169.793 1981684.462 585.9 1/22/2015 98 993236.274 1981843.814 587.0 1/22/2015 99 993097.462 1981885.994 585.2 1/22/2015 100 992948.193 1981926.412 581.4 1/22/2015 101 993087.403 1981747.311 584.7 1/28/2015 102 993406.343 1981839.834 587.7 1/28/2015 103 993315.459 1981796.760 587.9 1/28/2015 104 993230.379 1981740.715 587.5 1/28/2015 105 993201.726 1981875.954 587.7 1/28/2015 106 993147.687 1981796.602 585.9 1/28/2015 107 993081.163 1981726.083 585.8 1/28/2015 108 993077.448 1981946.344 586.1 1/28/2015 109 993057.834 1981879.774 584.5 1/28/2015 110 992981.948 1981811.179 583.6 Note: GPS data unavailable for 1/6/2015 as the system was not functioning. Test locations on sketch that date provided by construction equipment. Roxboro Ash Density Test Location Coordinates 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report February 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities includes: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 0 49,668.64 49,668.64 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 0 0 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 February 2015 Facility Totals 0 49,668.64 49,668.64 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors H 6-7. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, thirty one (31) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation Test ID Location Elevation 111* Cell H-6 588.7 121 Cell H-7 590.3 131 Cell H-7 592.9 112* Cell H-6 588.9 122 Cell H-7 587.8 132 Cell H-7 593.0 113* Cell H-6 589.3 123 Cell H-7 589.5 133* Cell H-6 594.9 114 Cell H-6 588.3 124 Cell H-7 590.1 134* Cell H-6 594.9 115 Cell H-7 586.9 125 Cell H-7 588.7 135* Cell H-6 595.4 116 Cell H-7 582.0 126* Cell H-6 589.4 136* Cell H-6 595.5 117 Cell H-6 586.2 127* Cell H-6 590.8 137 Cell H-6 592.8 118* Cell H-6 590.1 128* Cell H-6 592.0 138 Cell H-6 589.0 119* Cell H-6 590.5 129 Cell H-7 592.4 139 Cell H-6 593.6 120* Cell H-6 590.9 130 Cell H-7 592.5 140 Cell H-7 592.9 * Shell Test Location 141 Cell H-7 593.5 All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated March 3, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Three (3) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Walter Fox, Charah Rob Long, Charah Matthew Morris, Charah Chris Emory, Charah Thomas Maier, AMEC Landfill Operating Record Charah file Charah, Inc. Roxboro Steam Station February 2015 Tonnage Summary DFA to Landfill DBA to Landfill Decant Material Tons Tons Tons Phase Grid Total 1st 0.00 0.00 0.00 N/A N/A 0.00 2nd 1756.12 0.00 0.00 P4 H6, H7 1756.12 3rd 1575.80 0.00 0.00 P4 H6, H7 1575.80 4th 2194.80 0.00 0.00 P4 H6, H7 2194.80 5th 2039.80 0.00 0.00 P4 H6, H7 2039.80 6th 2239.90 0.00 0.00 P4 H6, H7 2239.90 7th 0.00 0.00 0.00 N/A N/A 0.00 8th 0.00 0.00 0.00 N/A N/A 0.00 9th 1687.12 0.00 0.00 P4 H6, H7 1687.12 10th 1610.36 0.00 0.00 P4 H6, H7 1610.36 11th 1767.34 0.00 0.00 P4 H6, H7 1767.34 12th 1591.50 0.00 0.00 P4 H6, H7 1591.50 13th 1557.38 0.00 0.00 P4 H6, H7 1557.38 14th 1541.72 0.00 0.00 P4 H6, H7 1541.72 15th 974.58 0.00 0.00 P4 H6, H7 974.58 16th 1640.54 0.00 0.00 P4 H6, H7 1640.54 17th 2840.08 0.00 0.00 P4 H6, H7 2840.08 18th 3366.86 0.00 0.00 P4 H6, H7 3366.86 19th 2594.78 0.00 0.00 P4 H6, H7 2594.78 20th 2528.14 0.00 0.00 P4 H6, H7 2528.14 21st 2271.36 0.00 0.00 P4 H6, H7 2271.36 22nd 0.00 0.00 0.00 N/A N/A 0.00 23rd 615.08 0.00 0.00 P4 H6, H7 615.08 24th 2588.60 0.00 0.00 P4 H6, H7 2588.60 25th 3052.40 0.00 0.00 P4 H6, H7 3052.40 26th 2351.64 0.00 0.00 P4 H6, H7 2351.64 27th 3336.36 0.00 0.00 P4 H6, H7 3336.36 28th 1946.38 0.00 0.00 P4 H6, H7 1946.38 MTD 49,668.64 0.00 0.00 YTD 83,802.30 11,300.00 0.00 95,102.30 Roxboro Tonnage Summary  February‐15 Landfilled 49,668.64 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com March 3, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES February 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of February 1 through February 28, 2015. During this reporting period, an ESP representative visited the site and performed thirty-one (31) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – February 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill March 3, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained three (3) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were provided by Charah field personnel at the time of testing. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates One Point Plots – February 2015 (2 sheets) Moisture-Density Relationship (S-5, S-7, S-13, S-14 and S-15) Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 111 Landfill - Shell: Cell H-6 (See attached sketch dated 2-3-15)588.7 Landfill Shell 32385 BOSNAK, Jesse 112 Landfill - Shell: Cell H-6 (See attached sketch dated 2-3-15)588.9 Landfill Shell 32385 BOSNAK, Jesse 113 Landfill - Shell: Cell H-6 (See attached sketch dated 2-3-15)589.3 Landfill Shell 32385 BOSNAK, Jesse 114 Landfill: Cell H-6 (See attached sketch dated 2-3-15)588.3 Greater than 100 ft. from crest 32385 BOSNAK, Jesse 115 Landfill: Cell H-7 (See attached sketch dated 2-3-15)586.9 Greater than 100 ft. from crest 32385 BOSNAK, Jesse 116 Landfill: Cell H-7 (See attached sketch dated 2-3-15)582.0 Greater than 100 ft. from crest 32385 BOSNAK, Jesse 117 Landfill: Cell H-6 (See attached sketch dated 2-3-15)586.2 Greater than 100 ft. from crest 32385 BOSNAK, Jesse 118 Landfill - Shell: Cell H-6 (See attached sketch dated 2-11-15)590.1 Landfill Shell 68093 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 111 2/3/15 S-5 A F Ash 42.0 62.7 39.7 61.7 6 98 95 112 2/3/15 S-5 A F Ash 42.0 62.7 35.4 62.9 6 100 95 113 2/3/15 S-5 A F Ash 42.0 62.7 39 60.4 6 96 95 114 2/3/15 S-5 A F Ash 42.0 62.7 36.3 61.8 6 99 90 115 2/3/15 S-5 A F Ash 42.0 62.7 38.9 58.0 6 93 90 116 2/3/15 S-5 A F Ash 42.0 62.7 33.6 64.0 6 102 90 117 2/3/15 S-5 A F Ash 42.0 62.7 45.9 60.0 6 96 90 118 2/11/15 S-7 A F Ash 32.4 72.2 31.2 73.4 6 102 95 Page 1 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 3/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 119 Landfill - Shell: Cell H-6 (See attached sketch dated 2-11-15)590.5 Landfill Shell 68093 SCAFF, Clyde 120 Landfill - Shell: Cell H-6 (See attached sketch dated 2-11-15)590.9 Landfill Shell 68093 SCAFF, Clyde 121 Landfill: Cell H-7 (See attached sketch dated 2-11-15)590.3 Greater than 100 ft. from crest 68093 SCAFF, Clyde 122 Landfill: Cell H-7 (See attached sketch dated 2-11-15)587.8 Greater than 100 ft. from crest 68093 SCAFF, Clyde 123 Landfill: Cell H-7 (See attached sketch dated 2-11-15)589.5 Greater than 100 ft. from crest 68093 SCAFF, Clyde 124 Landfill: Cell H-7 (See attached sketch dated 2-11-15)590.1 Greater than 100 ft. from crest 68093 SCAFF, Clyde 125 Landfill: Cell H-7 (See attached sketch dated 2-11-15)588.7 Greater than 100 ft. from crest 68093 SCAFF, Clyde 126 Landfill - Shell: Cell H-6 (See attached sketch dated 2-18-15)589.4 Landfill Shell 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 119 2/11/15 S-7 A F Ash 32.4 72.2 25.6 73.2 6 101 95 120 2/11/15 S-7 A F Ash 32.4 72.2 31.3 70.4 6 98 95 121 2/11/15 S-7 A F Ash 32.4 72.2 28.8 70.0 6 97 90 122 2/11/15 S-7 A F Ash 32.4 72.2 26.1 70.6 6 98 90 123 2/11/15 S-7 A F Ash 32.4 72.2 33.3 65.3 6 90 90 124 2/11/15 S-7 A F Ash 32.4 72.2 35.8 67.7 6 94 90 125 2/11/15 S-7 A F Ash 32.4 72.2 28 67.6 6 94 90 126 2/18/15 S-14 A F Ash 35.3 70.2 33.9 72.9 6 104 95 Page 2 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 3/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 127 Landfill - Shell: Cell H-6 (See attached sketch dated 2-18-15)590.8 Landfill Shell 1149 SCAFF, Clyde 128 Landfill - Shell: Cell H-6 (See attached sketch dated 2-18-15)592.0 Landfill Shell 1149 SCAFF, Clyde 129 Landfill: Cell H-7 (See attached sketch dated 2-18-15)592.4 Greater than 100 ft. from crest 1149 SCAFF, Clyde 130 Landfill: Cell H-7 (See attached sketch dated 2-18-15)592.5 Greater than 100 ft. from crest 1149 SCAFF, Clyde 131 Landfill: Cell H-7 (See attached sketch dated 2-18-15)592.9 Greater than 100 ft. from crest 1149 SCAFF, Clyde 132 Landfill: Cell H-7 (See attached sketch dated 2-18-15)593.0 Greater than 100 ft. from crest 1149 SCAFF, Clyde 133 Landfill - Shell: Cell H-6 (See attached sketch dated 2-27-15)594.9 Landfill Shell 114 BOSNAK, Jesse 134 Landfill - Shell: Cell H-6 (See attached sketch dated 2-27-15)594.9 Landfill Shell 114 BOSNAK, Jesse Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 127 2/18/15 S-14 A F Ash 35.3 70.2 37.3 68.4 6 97 95 128 2/18/15 S-14 A F Ash 35.3 70.2 34.3 70.1 6 100 95 129 2/18/15 S-14 A F Ash 35.3 70.2 36.3 66.2 6 94 90 130 2/18/15 S-14 A F Ash 35.3 70.2 37.8 65.9 6 94 90 131 2/18/15 S-14 A F Ash 35.3 70.2 27.6 67.4 6 96 90 132 2/18/15 S-14 A F Ash 35.3 70.2 34.4 65.7 6 94 90 133 2/27/15 S-13 A F Ash 39.8 66.8 37.6 63.4 12 95 95 134 2/27/15 S-13 A F Ash 39.8 66.8 37.4 65.5 12 98 95 Page 3 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 3/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 135 Landfill - Shell: Cell H-6 (See attached sketch dated 2-27-15)595.4 Landfill Shell 114 BOSNAK, Jesse 136 Landfill - Shell: Cell H-6 (See attached sketch dated 2-27-15)595.5 Landfill Shell 114 BOSNAK, Jesse 137 Landfill: Cell H-6 (See attached sketch dated 2-27-15)592.8 Greater than 100 ft. from crest 114 BOSNAK, Jesse 138 Landfill: Cell H-6 (See attached sketch dated 2-27-15)589.0 Greater than 100 ft. from crest 114 BOSNAK, Jesse 139 Landfill: Cell H-6 (See attached sketch dated 2-27-15)593.6 Greater than 100 ft. from crest 114 BOSNAK, Jesse 140 Landfill: Cell H-7 (See attached sketch dated 2-27-15)592.9 Greater than 100 ft. from crest 114 BOSNAK, Jesse 141 Landfill: Cell H-7 (See attached sketch dated 2-27-15)593.5 Greater than 100 ft. from crest 114 BOSNAK, Jesse Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 135 2/27/15 S-13 A F Ash 39.8 66.8 24.2 71.0 12 106 95 136 2/27/15 S-13 A F Ash 39.8 66.8 28.4 67.2 12 101 95 137 2/27/15 S-13 A F Ash 39.8 66.8 28.1 64.3 12 96 90 138 2/27/15 S-13 A F Ash 39.8 66.8 31.6 63.2 12 95 90 139 2/27/15 S-13 A F Ash 39.8 66.8 29.4 65.4 12 98 90 140 2/27/15 S-13 A F Ash 39.8 66.8 28.3 64.5 12 97 90 141 2/27/15 S-13 A F Ash 39.8 66.8 42.9 60.1 12 90 90 Page 4 of 4 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 3/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Date Test #Northing Easting Elevation ft 2/3/2015 111 993317.712 1981816.841 588.7 2/3/2015 112 993237.720 1981755.942 588.9 2/3/2015 113 993157.535 1981693.307 589.3 2/3/2015 114 993207.701 1981871.603 588.3 2/3/2015 115 993055.900 1981916.704 586.9 2/3/2015 116 992895.271 1981907.590 582.0 2/3/2015 117 993065.676 1981750.745 586.2 2/11/2015 118 993388.403 1981864.169 590.1 2/11/2015 119 993302.417 1981813.519 590.5 2/11/2015 120 993222.556 1981752.764 590.9 2/11/2015 121 993175.184 1981881.826 590.0 2/11/2015 122 993040.560 1981931.108 587.8 2/11/2015 123 993099.940 1981995.245 589.5 2/11/2015 124 993212.252 1981954.623 590.1 2/11/2015 125 993102.857 1981782.586 588.7 2/18/2015 126 993049.25 1981853.80 589.4 2/18/2015 127 993138.25 1981902.15 590.8 2/18/2015 128 993242.95 1981965.65 592.0 2/18/2015 129 993148.50 1982019.40 592.4 2/18/2015 130 933356.15 1981864.30 592.5 2/18/2015 131 993264.20 1981805.65 592.9 2/18/2015 132 993182.05 1981746.00 593.0 2/27/2015 133 993141.539 1981737.659 594.9 2/27/2015 134 993215.352 1981807.890 594.9 2/27/2015 135 993908.920 1981849.377 595.4 2/27/2015 136 993395.758 1981896.520 595.5 2/27/2015 137 993083.862 1981846.369 592.8 2/27/2015 138 992950.000 1981890.730 589.0 2/27/2015 139 993172.378 1981960.791 593.6 2/27/2015 140 993086.737 1981964.048 592.9 2/27/2015 141 992947.662 1982011.123 593.5 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 on-site Material Description TEST RESULTS 62.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 42.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-5 ASTM D698 - Procedure A Fly Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont BvdFort M , SC 29708Teephone: 803.802.2440 Fax: 803.802.2550 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 1 / 2 6 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4707 Roxboro Ash Density Testing Date: 11/25/14 Sample No: S-5 Tech: J. Boznak *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 11/25/2014 J. Boznak Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5429 5510 5564 5557 Weight of Proctor Mold (g)4215 4215 4215 4215 Weight of Soil in Mold (g)1214 1295 1349 1342 Weight of Soil in Mold (lbs)2.676 2.855 2.974 2.959 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.6 86.0 89.6 89.1 Moisture Can No D S F V Weight of Can 135.88 136.64 136.18 135.7 Weight of Wet Soil & Can 481 467.67 562.8 479.29 Weight of Dry Soil & Can 388.91 374.34 433.97 369.85 Weight of Water 92.09 93.33 128.83 109.44 Weight of Dry Soil 253.03 237.7 297.79 234.15 Moisture Content (%)36.39%39.26%43.26%46.74% Dry Unit Weight (pcf)59.1 61.7 62.5 60.7 Comments: Tony Summers AMRL - N/A 11/25/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 11/25/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-7 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/4/14 Sample No: S-7 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/3/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5424 5490 5545 5655 5654 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1209 1275 1330 1440 1439 Weight of Soil in Mold (lbs)2.665 2.811 2.932 3.175 3.172 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.3 84.7 88.3 95.6 95.6 Moisture Can No X R V T G Weight of Can 134.92 134.72 134.84 135.08 135.74 Weight of Wet Soil & Can 481.5 486.22 514.81 610.15 634.67 Weight of Dry Soil & Can 425.08 418.82 433.46 493.96 498.42 Weight of Water 56.42 67.4 81.35 116.19 136.25 Weight of Dry Soil 290.16 284.1 298.62 358.88 362.68 Moisture Content (%)19.44%23.72%27.24%32.38%37.57% Dry Unit Weight (pcf)67.2 68.4 69.4 72.2 69.5 Comments: Tony Summers AMRL - N/A 12/4/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/4/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 39.8 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-13 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 2 / 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4781 Roxboro Ash Density Testing Date: 2/6/15 Sample No: S-13 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/5/2015 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5174 5270 5355 5365 5339 Weight of Proctor Mold (g)3955 3955 3955 3955 3955 Weight of Soil in Mold (g)1219 1315 1400 1410 1384 Weight of Soil in Mold (lbs)2.687 2.899 3.086 3.108 3.051 Volume of Mold (cu.ft.).0001 0.0333 0.0333 0.0333 0.0333 0.0333 Wet Unit Weight (pcf)80.7 87.1 92.7 93.3 91.6 Moisture Can No B K U J M Weight of Can 135.13 135.02 134.81 135.14 135.3 Weight of Wet Soil & Can 444.05 476.43 454.21 421.73 482.55 Weight of Dry Soil & Can 370.74 386.41 364.66 335.27 371.44 Weight of Water 73.31 90.02 89.55 86.46 111.11 Weight of Dry Soil 235.61 251.39 229.85 200.13 236.14 Moisture Content (%)31.11%35.81%38.96%43.20%47.05% Dry Unit Weight (pcf)61.6 64.1 66.7 65.2 62.3 Comments: Tony Summers AMRL - N/A 2/6/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 2/6/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 35.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-14 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 2 / 1 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4794 Roxboro Ash Density Testing Date: 2/17/15 Sample No: S-14 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/16/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5613 5567 5597 5653 5648 Weight of Proctor Mold (g)4220 4220 4220 4220 4220 Weight of Soil in Mold (g)1393 1347 1377 1433 1428 Weight of Soil in Mold (lbs)3.071 2.970 3.036 3.159 3.148 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)92.8 89.7 91.7 95.4 95.1 Moisture Can No M O D W U Weight of Can 88.79 82.94 83.57 86.65 85.55 Weight of Wet Soil & Can 564.07 684.17 561.29 588.66 579.52 Weight of Dry Soil & Can 425.5 543.62 445.05 457.66 442.08 Weight of Water 138.57 140.55 116.24 131 137.44 Weight of Dry Soil 336.71 460.68 361.48 371.01 356.53 Moisture Content (%)41.15%30.51%32.16%35.31%38.55% Dry Unit Weight (pcf)65.7 68.7 69.4 70.5 68.6 Comments: Tony Summers AMRL - N/A 2/17/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 2/17/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-15 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4826 Roxboro Ash Density Testing Date: 3/2/15 Sample No: S-15 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/28/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5544 5598 5620 5629 5593 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1318 1372 1394 1403 1367 Weight of Soil in Mold (lbs)2.906 3.025 3.073 3.093 3.014 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)87.8 91.4 92.8 93.4 91.0 Moisture Can No W U K G S Weight of Can 85.82 134.82 134.90 135.17 135.31 Weight of Wet Soil & Can 506.03 661.26 662.23 608.14 590.46 Weight of Dry Soil & Can 409.88 530.22 525.75 474.23 453.33 Weight of Water 96.15 131.04 136.48 133.91 137.13 Weight of Dry Soil 324.06 395.4 390.85 339.06 318.02 Moisture Content (%)29.67%33.14%34.92%39.49%43.12% Dry Unit Weight (pcf)67.7 68.6 68.8 67.0 63.6 Comments: Tony Summers AMRL - N/A 3/2/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/2/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report March 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 0 28,626.74 28,626.74 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 7,340.00 7,340.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 600 600 March 2015 Facility Totals 0 36,566,74 36,566,74 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors H 6-8. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, fifty three (53) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation Test ID Location Elevation 142* Cell I-6 595.1 160 Cell H-7 595.6 178* Cell H-7 N/A 143* Cell H-6 596.2 161 Cell H-7 593.1 179 Cell H-7 N/A 144* Cell H-6 596.6 162 Cell H-7 592.4 180 Cell H-7 N/A 145* Cell H-6 596.3 163 Cell H-7 595.9 181 Cell H-7 N/A 146* Cell H-6 596.1 164* Cell H-7 596.4 182 Cell H-7 N/A 147 Cell H-6 592.9 165* Cell H-7 596.8 183 Cell H-8 N/A 148 Cell H-7 587.0 166* Cell H-7 597.2 184 Cell H-8 N/A 149 Cell H-6 595.5 167* Cell H-7 596.8 185 Cell H-8 N/A 150 Cell H-7 594.6 168 Cell H-7 597.1 186* Cell H-7 597.7 151 Cell H-7 594.7 169 Cell H-7 596.6 187* Cell H-7 597.6 152* Cell H-6 596.6 170 Cell H-7 594.6 188* Cell H-7 597.8 153* Cell H-6 597.3 171 Cell H-7 594.2 189 Cell H-7 597.8 154* Cell H-6 597.7 172 Cell H-8 596.4 190 Cell H-7 597.5 155* Cell H-6/7 597.6 173 Cell H-8 594.8 191 Cell H-7 596.7 156 Cell H-6 596.7 174* Cell H-7 N/A 192 Cell H-7 595.4 157 Cell H-6 596.8 175* Cell H-7 N/A 193 Cell H-8 597.5 158 Cell H-6 596.2 176* Cell H-7 N/A 194 Cell H-8 596.4 159 Cell H-7 596.5 177* Cell H-7 N/A * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated April 2, 2015 attached to this report. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Four (4) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Scott Nordgren, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Kyle Baucom, Duke Energy Walter Fox, Charah Rob Long, Charah Matthew Morris, Charah Chris Emory, Charah Thomas Maier, AMEC Landfill Operating Record Charah file 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. Ch a r a h  In c . Ro x b o r o  St e a m  St a t i o n Ma r c h  20 1 5  To n n a g e  Su m m a r y DF A  to  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 0 . 0 0 0 . 0 0 N / A N / A 0 . 0 0 2n d   15 8 2 . 3 8 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 1 5 8 2 . 3 8 3r d   16 9 7 . 0 8 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 1 6 9 7 . 0 8 4t h   20 2 7 . 4 8 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 2 0 2 7 . 4 8 5t h   14 3 2 . 5 8 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 1 4 3 2 . 5 8 6t h   18 8 4 . 3 0 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 1 8 8 4 . 3 0 7t h   24 8 6 . 6 0 0 . 0 0 0 . 0 0 P 4 H 6 , H 7 2 4 8 6 . 6 0 8t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 9t h   13 2 4 . 4 8 0. 0 0 0. 0 0 P4 H6 , H 7 1324.48 10 t h   14 0 6 . 5 6 0. 0 0 0. 0 0 P4 H6 , H 7 1406.56 11 t h   13 8 8 . 1 8 0. 0 0 36 0 . 0 0 P4 H6 , H 7 1748.18 12 t h   16 2 4 . 6 8 0. 0 0 0. 0 0 P4 H6 , H 7 1624.68 13 t h   15 2 6 . 8 8 0. 0 0 0. 0 0 P4 H6 , H 7 1526.88 14 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 15 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 16 t h   13 9 6 . 5 0 0. 0 0 0. 0 0 P4 H6 , H 7 1396.50 17 t h   11 3 5 . 5 6 0. 0 0 0. 0 0 P4 H6 , H 7 1135.56 18 t h   86 0 . 9 0 0. 0 0 24 0 . 0 0 P4 H7 , H 8 1100.90 19 t h   11 2 7 . 2 6 0. 0 0 0. 0 0 P4 H7 , H 8 1127.26 20 t h   90 3 . 6 4 0. 0 0 0. 0 0 P4 H7 , H 8 903.64 21 s t   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 22 n d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 23 r d   82 7 . 8 2 88 0 . 0 0 0. 0 0 P4 H7 , H 8 1707.82 24 t h   73 7 . 3 2 36 0 . 0 0 0. 0 0 P4 H7 , H 8 1097.32 25 t h   91 4 . 7 4 10 4 0 . 0 0 0. 0 0 P4 H7 , H 8 1954.74 26 t h   73 4 . 0 8 96 5 . 0 0 0. 0 0 P4 H7 , H 8 1699.08 27 t h   47 8 . 2 8 11 8 5 . 0 0 0. 0 0 P4 H7 , H 8 1663.28 28 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 29 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 30 t h   70 3 . 9 8 12 0 5 . 0 0 0. 0 0 P4 H7 , H 8 1908.98 31 s t   42 5 . 4 6 17 0 5 . 0 0 0. 0 0 P4 H7 , H 8 2130.46 MT D 28 , 6 2 6 . 7 4 7, 3 4 0 . 0 0 60 0 . 0 0 YT D 11 2 , 4 2 9 . 0 4 18 , 6 4 0 . 0 0 60 0 . 0 0 13 1 , 6 6 9 . 0 4 Ro x b o r o  To n n a g e  Su m m a r y   Ma r c h ‐15 La n d f i l l e d 36 , 5 6 6 . 7 4 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com April 2, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES March 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of March 1 through March 31, 2015. During this reporting period, an ESP representative visited the site and performed fifty-three field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – March 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill April 2, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained four (4) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were provided by Charah field personnel at the time of testing. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report Density Test Location Sketches (5 sheets) Roxboro Ash Density Test Location Coordinates One Point Plot – March 2015 Moisture-Density Relationship (6 DQG S-14 through S-19) Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 142 Landfill - Shell: Cell I-6 (See attached sketch dated 3-3-15)595.1 Landfill Shell 1149 BOSNAK, Jesse 143 Landfill - Shell: Cell H-6 (See attached sketch dated 3-3-15)596.2 Landfill Shell 1149 BOSNAK, Jesse 144 Landfill - Shell: Cell H-6 (See attached sketch dated 3-3-15)596.6 Landfill Shell 1149 BOSNAK, Jesse 145 Landfill - Shell: Cell H-6 (See attached sketch dated 3-3-15)596.3 Landfill Shell 1149 BOSNAK, Jesse 146 Landfill - Shell: Cell H-6 (See attached sketch dated 3-3-15)596.1 Landfill Shell 1149 BOSNAK, Jesse 147 Landfill: Cell H-6 (See attached sketch dated 3-3-15)592.9 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 148 Landfill: Cell H-7 (See attached sketch dated 3-3-15)587.0 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 149 Landfill: Cell H-6 (See attached sketch dated 3-3-15)595.5 Greater than 100 ft. from crest 1149 BOSNAK, Jesse Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 142 3/3/15 S-15 A F Ash 34.9 68.8 37.1 65.8 12 96 95 143 3/3/15 S-15 A F Ash 34.9 68.8 32.1 66.1 12 96 95 144 3/3/15 S-15 A F Ash 34.9 68.8 29.5 69.2 12 101 95 145 3/3/15 S-15 A F Ash 34.9 68.8 33.4 66.8 12 97 95 146 3/3/15 S-15 A F Ash 34.9 68.8 32.9 68.0 12 99 95 147 3/3/15 S-15 A F Ash 34.9 68.8 28.8 65.3 12 95 90 148 3/3/15 S-15 A F Ash 34.9 68.8 33 67.5 12 98 90 149 3/3/15 S-15 A F Ash 34.9 68.8 24.4 66.1 12 96 90 Page 1 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 150 Landfill: Cell H-7 (See attached sketch dated 3-3-15)594.6 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 151 Landfill: Cell H-7 (See attached sketch dated 3-3-15)594.7 Greater than 100 ft. from crest 1149 BOSNAK, Jesse 152 Landfill - Shell: Cell H-6 (See attached sketch dated 3-10-15)596.6 Landfill Shell 1149 SCAFF, Clyde 153 Landfill - Shell: Cell H-6 (See attached sketch 3-10-15)597.3 Landfill Shell 1149 SCAFF, Clyde 154 Landfill - Shell: Cell H-6 (See attached sketch dated 3-10-15)597.7 Landfill Shell 1149 SCAFF, Clyde 155 Landfill - Shell: Cell H-6/H-7 (See attached sketch dated 3-10-15)597.6 Landfill Shell 1149 SCAFF, Clyde 156 Landfill: Cell H-6 (See attached sketch dated 3-10-15)596.7 Greater than 100 ft. from crest 1149 SCAFF, Clyde 157 Landfill: Cell H-6 (See attached sketch dated 3-10-15)596.8 Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 150 3/3/15 S-15 A F Ash 34.9 68.8 26.8 66.6 12 97 90 151 3/3/15 S-15 A F Ash 34.9 68.8 26.5 65.2 12 95 90 152 3/10/15 S-14 A F Ash 35.3 70.2 26.2 69.2 12 99 95 153 3/10/15 S-14 A F Ash 35.3 70.2 32.7 69.3 12 99 95 154 3/10/15 S-14 A F Ash 35.3 70.2 31.8 67.5 12 96 95 155 3/10/15 S-14 A F Ash 35.3 70.2 31.2 70.8 12 101 95 156 3/10/15 S-14 A F Ash 35.3 70.2 27.7 68.5 12 98 90 157 3/10/15 S-14 A F Ash 35.3 70.2 29 68.2 12 97 90 Page 2 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 158 Landfill: Cell H-6 (See attached sketch dated 3-10-15)596.2 Greater than 100 ft. from crest 1149 SCAFF, Clyde 159 Landfill: Cell H-7 (See attached sketch dated 3-10-15)596.5 Greater than 100 ft. from crest 1149 SCAFF, Clyde 160 Landfill: Cell H-7 (See attached sketch dated 3-10-15)595.6 Greater than 100 ft. from crest 1149 SCAFF, Clyde 161 Landfill: Cell H-7 (See attached sketch dated 3-10-15)593.1 Greater than 100 ft. from crest 1149 SCAFF, Clyde 162 Landfill: Cell H-7 (See attached sketch dated 3-10-15)592.4 Greater than 100 ft. from crest 1149 SCAFF, Clyde 163 Landfill: Cell H-7 (See attached sketch dated 3-10-15)595.9 Greater than 100 ft. from crest 1149 SCAFF, Clyde 164 Landfill - Shell: Cell H-7 (See attached sketch dated 3-18-15)596.4 Landfill Shell 1149 SCAFF, Clyde 165 Landfill - Shell: Cell H-7 (See attached sketch dated 3-18-15)596.8 Landfill Shell 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 158 3/10/15 S-14 A F Ash 35.3 70.2 32.1 66.2 12 94 90 159 3/10/15 S-14 A F Ash 35.3 70.2 26.7 69.8 12 99 90 160 3/10/15 S-14 A F Ash 35.3 70.2 32.5 68.9 12 98 90 161 3/10/15 S-14 A F Ash 35.3 70.2 27.9 67.5 12 96 90 162 3/10/15 S-14 A F Ash 35.3 70.2 29.6 68.9 12 98 90 163 3/10/15 S-14 A F Ash 35.3 70.2 29.2 72.0 12 103 90 164 3/18/15 S-14 A F Ash 35.3 70.2 31.3 69.3 12 99 95 165 3/18/15 S-14 A F Ash 35.3 70.2 31.4 71.2 12 101 95 Page 3 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 166 Landfill - Shell: Cell H-7 (See attached sketch dated 3-18-15)597.2 Landfill Shell 1149 SCAFF, Clyde 167 Landfill - Shell: Cell H-7 (See attached sketch dated 3-18-15)596.8 Landfill Shell 1149 SCAFF, Clyde 168 Landfill: Cell H-7 (See attached sketch dated 3-18-15)597.1 Greater than 100 ft. from crest 1149 SCAFF, Clyde 169 Landfill: Cell H-7 (See attached sketch dated 3-18-15)596.6 Greater than 100 ft. from crest 1149 SCAFF, Clyde 170 Landfill: Cell H-7 (See attached sketch dated 3-18-15)594.6 Greater than 100 ft. from crest 1149 SCAFF, Clyde 171 Landfill: Cell H-7 (See attached sketch dated 3-18-15)594.2 Greater than 100 ft. from crest 1149 SCAFF, Clyde 172 Landfill: Cell H-8 (See attached sketch dated 3-18-15)596.4 Greater than 100 ft. from crest 1149 SCAFF, Clyde 173 Landfill: Cell H-8 (See attached sketch dated 3-18-15)594.8 Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 166 3/18/15 S-14 A F Ash 35.3 70.2 35.4 67.7 12 96 95 167 3/18/15 S-14 A F Ash 35.3 70.2 27.9 70.4 12 100 95 168 3/18/15 S-14 A F Ash 35.3 70.2 34.8 64.8 12 92 90 169 3/18/15 S-14 A F Ash 35.3 70.2 36.6 63.3 12 90 90 170 3/18/15 S-14 A F Ash 35.3 70.2 30.8 68.5 12 98 90 171 3/18/15 S-14 A F Ash 35.3 70.2 29.5 68.0 12 97 90 172 3/18/15 S-14 A F Ash 35.3 70.2 36.8 63.1 12 90 90 173 3/18/15 S-14 A F Ash 35.3 70.2 37.1 63.7 12 91 90 Page 4 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 174 Landfill - Shell: Cell H-7 (See attached sketch dated 3-24-15)Landfill Shell 1149 SCAFF, Clyde 175 Landfill - Shell: Cell H-7 (See attached sketch dated 3-24-15)Landfill Shell 1149 SCAFF, Clyde 176 Landfill - Shell: Cell H-7 (See attached sketch dated 3-24-15)Landfill Shell 1149 SCAFF, Clyde 177 Landfill - Shell: Cell H-7 (See attached sketch dated 3-24-15)Landfill Shell 1149 SCAFF, Clyde 178 Landfill - Shell: Cell H-7 (See attached sketch dated 3-24-15)Landfill Shell 1149 SCAFF, Clyde 179 Landfill: Cell H-7 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 180 Landfill: Cell H-7 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 181 Landfill: Cell H-7 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" 174: Elevations not available for Test Nos. 174-185 as Charah GPS personnel not present at time of testing. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 174 3/24/15 S-18 A F Ash 36.5 70.1 38.3 66.6 12 95 95 175 3/24/15 S-18 A F Ash 36.5 70.1 29.9 69.7 12 99 95 176 3/24/15 S-18 A F Ash 36.5 70.1 29.7 70.5 12 101 95 177 3/24/15 S-18 A F Ash 36.5 70.1 28.8 70.3 12 100 95 178 3/24/15 S-18 A F Ash 36.5 70.1 30.1 71.5 12 102 95 179 3/24/15 S-18 A F Ash 36.5 70.1 35.8 64.9 12 93 90 180 3/24/15 S-18 A F Ash 36.5 70.1 32.8 67.4 12 96 90 181 3/24/15 S-18 A F Ash 36.5 70.1 34 67.1 12 96 90 Page 5 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 182 Landfill: Cell H-7 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 183 Landfill: Cell H-8 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 184 Landfill: Cell H-8 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 185 Landfill: Cell H-8 (See attached sketch dated 3-24-15)Greater than 100 ft. from crest 1149 SCAFF, Clyde 186 Landfill - Shell: Cell H-7 (See attached sketch dated 3-31-15)597.7 Landfill Shell 114 SCAFF, Clyde 187 Landfill - Shell: Cell H-7 (See attached sketch dated 3-31-15)597.6 Landfill Shell 114 SCAFF, Clyde 188 Landfill - Shell: Cell H-7 (See attached sketch dated 3-31-15)597.8 Landfill Shell 114 SCAFF, Clyde 189 Landfill: Cell H-7 (See attached sketch dated 3-31-15)597.8 Greater than 100 ft. from crest 114 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" 186, 187, 188, 189: Proctor S-9, adj. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 182 3/24/15 S-18 A F Ash 36.5 70.1 33.5 66.3 12 95 90 183 3/24/15 S-18 A F Ash 36.5 70.1 32.6 67.1 12 96 90 184 3/24/15 S-18 A F Ash 36.5 70.1 33 66.6 12 95 90 185 3/24/15 S-18 A F Ash 36.5 70.1 38.6 63.0 12 90 90 186 3/31/15 OP-28 A F Ash 32.1 59.4 42.3 57.2 12 96 95 187 3/31/15 OP-28 A F Ash 32.1 59.4 47.5 56.5 12 95 95 188 3/31/15 OP-28 A F Ash 32.1 59.4 47.2 57.9 12 97 95 189 3/31/15 OP-28 A F Ash 32.1 59.4 31.6 59.4 12 100 90 Page 6 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 190 Landfill: Cell H-7 (See attached sketch dated 3-31-15)597.5 Greater than 100 ft. from crest 114 SCAFF, Clyde 191 Landfill: Cell H-7 (See attached sketch dated 3-31-15)596.7 Greater than 100 ft. from crest 114 SCAFF, Clyde 192 Landfill: Cell H-7 (See attached sketch dated 3-31-15)595.4 Greater than 100 ft. from crest 114 SCAFF, Clyde 193 Landfill: Cell H-8 (See attached sketch dated 3-31-15)597.5 Greater than 100 ft. from crest 114 SCAFF, Clyde 194 Landfill: Cell H-8 (See attached sketch dated 3-31-15)596.4 Greater than 100 ft. from crest 114 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" 190, 191, 192, 193, 194: Proctor S-9, adj. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 190 3/31/15 OP-28 A F Ash 32.1 59.4 28.1 59.0 12 99 90 191 3/31/15 OP-28 A F Ash 32.1 59.4 37.4 55.6 12 94 90 192 3/31/15 OP-28 A F Ash 32.1 59.4 32.2 59.5 12 100 90 193 3/31/15 OP-28 A F Ash 32.1 59.4 33.7 58.5 12 98 90 194 3/31/15 OP-28 A F Ash 32.1 59.4 36.1 59.2 12 100 90 Page 7 of 7 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 E4C Date Test #Northing Easting Elevation ft 3/3/2015 142 993368.498 1981902.980 595.1 3/3/2015 143 993282.796 1981849.486 596.2 3/3/2015 144 993199.288 1981795.728 596.6 3/3/2015 145 993126.620 1981730.775 596.3 3/3/2015 146 993071.012 1981653.449 596.1 3/3/2015 147 993063.287 1981796.393 592.9 3/3/2015 148 992918.812 1981862.654 587.0 3/3/2015 149 993162.541 1981924.414 595.5 3/3/2015 150 993046.188 1981996.952 594.6 3/3/2015 151 992912.501 1982039.781 594.7 3/10/2015 152 993376.652 1981879.392 596.6 3/10/2015 153 993291.189 1981835.221 597.3 3/10/2015 154 993208.598 1981784.892 597.7 3/10/2015 155 993136.574 1981720.296 597.6 3/10/2015 156 993294.160 1981932.138 596.7 3/10/2015 157 993211.873 1381884.620 596.8 3/10/2015 158 993136.865 1981819.215 596.2 3/10/2015 159 993166.519 1981994.140 596.5 3/10/2015 160 993116.082 1981939.475 595.6 3/10/2015 161 993050.255 1981890.789 593.1 3/10/2015 162 992996.401 1981828.328 592.4 3/10/2015 163 993039.736 1982045.847 595.9 3/18/2015 164 993470.544 1981969.396 596.4 3/18/2015 165 993985.835 1981926.947 596.8 3/18/2015 166 993306.135 1981872.589 597.2 3/18/2015 167 993228.264 1981810.677 596.8 3/18/2015 168 993275.186 1982089.495 597.1 3/18/2015 169 993236.291 1982021.336 596.6 3/18/2015 170 993207.456 1981956.304 594.6 3/18/2015 171 993161.591 1981876.097 594.2 3/18/2015 172 993167.210 1982130.047 596.4 3/18/2015 173 993126.188 1982042.454 594.8 3/31/2015 186 993333.193 1981905.997 597.7 3/31/2015 187 993256.510 1981847.970 597.6 3/31/2015 188 993183.266 1981789.277 597.8 3/31/2015 189 993318.239 1982058.614 597.8 3/31/2015 190 993269.207 1981979.449 597.5 3/31/2015 191 993187.011 1981927.095 596.7 3/31/2015 192 993105.648 1981883.379 595.4 3/31/2015 193 993184.651 1982129.593 597.5 3/31/2015 194 993155.310 1982044.687 596.4 Note: GPS personnel for Charah not available on 3/24/18 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 57.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-9 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 3 0 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4733 Roxboro Ash Density Testing Date: 12/26/14 Sample No: S-9 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/26/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5299 5336 5384 5354 Weight of Proctor Mold (g)4215 4215 4215 4215 Weight of Soil in Mold (g)1084 1121 1169 1139 Weight of Soil in Mold (lbs)2.390 2.471 2.577 2.511 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)72.0 74.4 77.6 75.6 Moisture Can No D P W T Weight of Can 135.27 134.74 134.62 135.12 Weight of Wet Soil & Can 509.28 518.3 569.59 721.41 Weight of Dry Soil & Can 425.22 427.05 457.5 561.78 Weight of Water 84.06 91.25 112.09 159.63 Weight of Dry Soil 289.95 292.31 322.88 426.66 Moisture Content (%)28.99%31.22%34.72%37.41% Dry Unit Weight (pcf)55.8 56.7 57.6 55.0 Comments: Tony Summers AMRL - N/A 12/26/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/26/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 35.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-14 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 2 / 1 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4794 Roxboro Ash Density Testing Date: 2/17/15 Sample No: S-14 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/16/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5613 5567 5597 5653 5648 Weight of Proctor Mold (g)4220 4220 4220 4220 4220 Weight of Soil in Mold (g)1393 1347 1377 1433 1428 Weight of Soil in Mold (lbs)3.071 2.970 3.036 3.159 3.148 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)92.8 89.7 91.7 95.4 95.1 Moisture Can No M O D W U Weight of Can 88.79 82.94 83.57 86.65 85.55 Weight of Wet Soil & Can 564.07 684.17 561.29 588.66 579.52 Weight of Dry Soil & Can 425.5 543.62 445.05 457.66 442.08 Weight of Water 138.57 140.55 116.24 131 137.44 Weight of Dry Soil 336.71 460.68 361.48 371.01 356.53 Moisture Content (%)41.15%30.51%32.16%35.31%38.55% Dry Unit Weight (pcf)65.7 68.7 69.4 70.5 68.6 Comments: Tony Summers AMRL - N/A 2/17/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 2/17/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-15 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4826 Roxboro Ash Density Testing Date: 3/2/15 Sample No: S-15 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/28/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5544 5598 5620 5629 5593 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1318 1372 1394 1403 1367 Weight of Soil in Mold (lbs)2.906 3.025 3.073 3.093 3.014 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)87.8 91.4 92.8 93.4 91.0 Moisture Can No W U K G S Weight of Can 85.82 134.82 134.90 135.17 135.31 Weight of Wet Soil & Can 506.03 661.26 662.23 608.14 590.46 Weight of Dry Soil & Can 409.88 530.22 525.75 474.23 453.33 Weight of Water 96.15 131.04 136.48 133.91 137.13 Weight of Dry Soil 324.06 395.4 390.85 339.06 318.02 Moisture Content (%)29.67%33.14%34.92%39.49%43.12% Dry Unit Weight (pcf)67.7 68.6 68.8 67.0 63.6 Comments: Tony Summers AMRL - N/A 3/2/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/2/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 71.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-16 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4827 Roxboro Ash Density Testing Date: 3/6/15 Sample No: S-16 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/6/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5514 5558 5659 5672 5658 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1288 1332 1433 1446 1432 Weight of Soil in Mold (lbs)2.840 2.937 3.159 3.188 3.157 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.8 88.7 95.4 96.3 95.4 Moisture Can No X S B C L Weight of Can 134.9 135.23 134.94 135.46 134.95 Weight of Wet Soil & Can 504.21 508.62 488.15 492.78 484.12 Weight of Dry Soil & Can 428.62 349.48 400.66 398.34 386.53 Weight of Water 75.59 159.14 87.49 94.44 97.59 Weight of Dry Soil 293.72 214.25 265.72 262.88 251.58 Moisture Content (%)25.74%74.28%32.93%35.93%38.79% Dry Unit Weight (pcf)68.2 50.9 71.8 70.9 68.7 Comments: Tony Summers AMRL - N/A 3/7/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/7/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-17 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4850 Roxboro Ash Density Testing Date: 3/21/15 Sample No: S-16 Tech: N. Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/20/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5506 5584 5665 5678 5641 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1280 1358 1439 1452 1415 Weight of Soil in Mold (lbs)2.822 2.994 3.172 3.201 3.119 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.3 90.4 95.8 96.7 94.2 Moisture Can No D E A P Q Weight of Can 135.21 135.51 134.98 134.65 135.19 Weight of Wet Soil & Can 481.51 542.7 486.74 492.46 509.4 Weight of Dry Soil & Can 412.82 451.83 399.45 399.77 404.67 Weight of Water 68.69 90.87 87.29 92.69 104.73 Weight of Dry Soil 277.61 316.32 264.47 265.12 269.48 Moisture Content (%)24.74%28.73%33.01%34.96%38.86% Dry Unit Weight (pcf)68.3 70.3 72.1 71.7 67.9 Comments: Tony Summers AMRL - N/A 3/21/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/21/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 36.5 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-18 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4850 Roxboro Ash Density Testing Date: 3/26/15 Sample No: S-18 Tech: N.Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/25/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5503 5581 5662 5667 5646 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1277 1355 1436 1441 1420 Weight of Soil in Mold (lbs)2.815 2.987 3.166 3.177 3.131 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.1 90.2 95.6 96.0 94.6 Moisture Can No S J P I B Weight of Can 135.18 135.16 134.65 135.06 134.96 Weight of Wet Soil & Can 576.41 542.19 620.48 560.43 581.4 Weight of Dry Soil & Can 478.84 442.09 490.47 444.51 453.1 Weight of Water 97.57 100.1 130.01 115.92 128.3 Weight of Dry Soil 343.66 306.93 355.82 309.45 318.14 Moisture Content (%)28.39%32.61%36.54%37.46%40.33% Dry Unit Weight (pcf)66.2 68.1 70.0 69.8 67.4 Comments: Tony Summers AMRL - N/A 3/26/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/26/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 On Site Material Description TEST RESULTS 55.0 Zero Air Voids Curves For Gs = 2 6 - 2 8 52.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-19 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 5 G P J 3 / 3 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4866 Roxboro Ash Density Testing Date: 3/26/15 Sample No: S-19 Tech: N. Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/25/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5375 5409 5470 5500 5526 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1149 1183 1244 1274 1300 Weight of Soil in Mold (lbs)2.533 2.608 2.743 2.809 2.866 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)76.5 78.8 82.9 84.9 86.6 Moisture Can No K G N E C Weight of Can 134.84 135.13 134.35 135.46 135.44 Weight of Wet Soil & Can 543.87 542.41 439.87 550.83 539.24 Weight of Dry Soil & Can 422.47 414.73 336.93 404.00 390.27 Weight of Water 121.4 127.68 102.94 146.83 148.97 Weight of Dry Soil 287.63 279.6 202.58 268.54 254.83 Moisture Content (%)42.21%45.67%50.81%54.68%58.46% Dry Unit Weight (pcf)53.8 54.1 54.9 54.9 54.6 Comments: Tony Summers AMRL - N/A 3/26/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/26/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report April 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 0 9,334.46 9,334.46 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 360.00 360.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 425.00 425.00 April 2015 Facility Totals 0 10,119.46 10,119.46 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors H 7-8. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, eleven (11) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation 195* Cell H-7 599.1 196* Cell H-7 599.1 197* Cell H-7 599.0 198 Cell H-7 598.9 199 Cell H-8 598.7 200 Cell H-7 598.5 201 Cell H-8 596.4 202 Cell H-8 595.4 203 Cell H-8 593.1 204 Cell H-8 596.9 205 Cell H-8 594.7 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated May 1, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Two (2) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Scott Nordgren, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Kyle Baucom, Duke Energy Walter Fox, Charah Rob Long, Charah Matthew Morris, Charah Chris Emory, Charah Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Ap r i l  20 1 5  To n n a g e  Su m m a r y DF A  to  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s Ph a s e Gr i d Total 1s t   45 3 . 9 6 0 . 0 0 0 . 0 0 P 4 H 7 , H 8 4 5 3 . 9 6 2n d   0. 0 0 0. 0 0 42 5 . 0 0 P4 H7 , H 8 425.00 3r d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 4t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 5t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 6t h   65 6 . 5 0 36 0 . 0 0 0. 0 0 P4 H7 , H 8 1016.50 7t h   71 2 . 9 2 0. 0 0 0. 0 0 P4 H7 , H 8 712.92 8t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 9t h   13 2 5 . 5 8 0. 0 0 0. 0 0 P4 H7 , H 8 1325.58 10 t h   85 8 . 4 0 0. 0 0 0. 0 0 P4 H7 , H 8 858.40 11 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 12 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 13 t h   13 4 7 . 5 0 0. 0 0 0. 0 0 P4 H7 , H 8 1347.50 14 t h   31 7 . 3 0 0. 0 0 0. 0 0 P4 H7 , H 8 317.30 15 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 16 t h   90 9 . 1 4 0. 0 0 0. 0 0 P4 H7 , H 8 909.14 17 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 18 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 19 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 20 t h   75 6 . 5 2 0. 0 0 0. 0 0 P4 H7 , H 8 756.52 21 s t   37 1 . 4 8 0. 0 0 0. 0 0 P4 H7 , H 8 371.48 22 n d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 23 r d   30 0 . 5 2 0. 0 0 0. 0 0 P4 H7 , H 8 300.52 24 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 25 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 26 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 27 t h   33 5 . 5 6 0. 0 0 0. 0 0 P4 H7 , H 8 335.56 28 t h   39 5 . 6 4 0. 0 0 0. 0 0 P4 H7 , H 8 395.64 29 t h   34 5 . 1 0 0. 0 0 0. 0 0 P4 H7 , H 8 345.10 30 t h   24 8 . 3 4 0. 0 0 0. 0 0 P4 H7 , H 8 248.34 MT D 9, 3 3 4 . 4 6 36 0 . 0 0 42 5 . 0 0 YT D 12 1 , 7 6 3 . 5 0 19 , 0 0 0 . 0 0 1, 0 2 5 . 0 0 14 1 , 7 8 8 . 5 0 Ro x b o r o  To n n a g e  Su m m a r y   Ap r i l ‐15 La n d f i l l e d 10 , 1 1 9 . 4 6 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com May 1, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES April 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of April 1 through April 30, 2015. During this reporting period, an ESP representative visited the site and performed eleven (11) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. The number of tests during this reporting period was reduced with respect to previous reporting periods due to the relatively low amount of ash placed. In addition, as reported by Charah personnel, ash material was not placed within the shell area during this reporting period following our testing on April 9, 2015. Test locations were selected based on placement of ash each week as reported to ESP by on- site Charah personnel. As a result of inherent variability of fill materials, the one-point standard Field Density and Laboratory Testing Services – April 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill May 1, 2015 2 Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained two (2) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – April 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill May 1, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (2 sheets) Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates One Point Plots – April 2015 (2 sheets) Moisture-Density Relationship (S-6, S-11, S-12, S-20 and S-21) Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 195 Landfill - Shell: Cell H-7 (See attached sketch dated 4-9-15)599.1 Landfill Shell 1149 SCAFF, Clyde 196 Landfill - Shell: Cell H-7 (See attached sketch dated 4-9-15)599.1 Landfill Shell 1149 SCAFF, Clyde 197 Landfill - Shell: Cell H-7 (See attached sketch dated 4-9-15)599.0 Landfill Shell 1149 SCAFF, Clyde 198 Landfill: Cell H-7 (See attached sketch dated 4-9-15)598.9 Greater than 100 ft. from crest 1149 SCAFF, Clyde 199 Landfill: Cell H-8 (See attached sketch dated 4-9-15)598.7 Greater than 100 ft. from crest 1149 SCAFF, Clyde 200 Landfill: Cell H-7 (See attached sketch dated 4-17-15)598.5 Greater than 100 ft. from crest 1027 SCAFF, Clyde 201 Landfill: Cell H-8 (See attached sketch dated 4-17-15)596.4 Greater than 100 ft. from crest 1027 SCAFF, Clyde 202 Landfill: Cell H-8 (See attached sketch dated 4-23-15)595.4 Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 195 4/9/15 S-6 A F Ash 42.0 64.8 51.6 61.3 12 95 95 196 4/9/15 S-6 A F Ash 42.0 64.8 37 65.8 12 102 95 197 4/9/15 S-6 A F Ash 42.0 64.8 36.5 64.5 12 100 95 198 4/9/15 S-6 A F Ash 42.0 64.8 42.6 60.3 12 93 90 199 4/9/15 S-6 A F Ash 42.0 64.8 44.6 60.1 12 93 90 200 4/17/15 S-12 A F Ash 37.6 68.9 37.8 63.9 12 93 90 201 4/17/15 S-12 A F Ash 37.6 68.9 37.6 67.2 12 98 90 202 4/23/15 S-12 A F Ash 37.6 68.9 25.5 64.1 12 93 90 Page 1 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 203 Landfill: Cell H-8 (See attached sketch dated 4-23-15)593.1 Greater than 100 ft. from crest 1149 SCAFF, Clyde 204 Landfill: Cell H-8 (See attached sketch dated 4-28-15)596.9 Greater than 100 ft. from crest 1149 SCAFF, Clyde 205 Landfill: Cell H-8 (See attached sketch dated 4-28-15)594.7 Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 203 4/23/15 S-12 A F Ash 37.6 68.9 33.1 62.1 12 90 90 204 4/28/15 S-11 A F Ash 35.7 69.7 37.7 63.3 12 91 90 205 4/28/15 S-11 A F Ash 35.7 69.7 37.2 62.7 12 90 90 Page 2 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 4/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 4/9/2015 195 993424.592 1981948.504 599.1 4/9/2015 196 993340.015 1981904.036 599.0 4/9/2015 197 993264.643 1981852.792 599.0 4/9/2015 198 993319.691 1982006.213 598.9 4/9/2015 199 993203.211 1982071.688 598.7 4/17/2015 200 993174.758 1981835.451 598.5 4/17/2015 201 993118.304 1981905.675 596.4 4/23/2015 202 993074.486 1981904.099 595.4 4/23/2015 203 993025.585 1981979.232 593.1 4/28/2015 204 993125.413 1981887.020 596.9 4/28/2015 205 993054.871 1981955.465 594.7 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 64.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 42.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-6 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/2/14 Sample No: S-6 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/1/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5415 5508 5551 5605 5585 5584 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1200 1293 1336 1390 1370 1369 Weight of Soil in Mold (lbs)2.646 2.851 2.945 3.064 3.020 3.018 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)79.7 85.9 88.7 92.3 91.0 90.9 Moisture Can No R B P W M O Weight of Can 83.35 134.96 134.85 134.78 135.73 83.03 Weight of Wet Soil & Can 374.58 439.94 462.06 618.21 465.02 452.17 Weight of Dry Soil & Can 306.65 358.12 370.04 473.65 362.12 331.55 Weight of Water 67.93 81.82 92.02 144.56 102.9 120.62 Weight of Dry Soil 223.3 223.16 235.19 338.87 226.39 248.52 Moisture Content (%)30.42%36.66%39.13%42.66%45.45%48.54% Dry Unit Weight (pcf)61.1 62.8 63.8 64.7 62.5 61.2 Comments: Tony Summers AMRL - N/A 12/2/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/2/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 69.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 35.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-11 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 / 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4742 Roxboro Ash Density Testing Date: 1/9/15 Sample No: S-11 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 1/8/2015 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5487 5566 5645 5641 5630 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1272 1351 1430 1426 1415 Weight of Soil in Mold (lbs)2.804 2.978 3.153 3.144 3.119 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)84.5 89.7 95.0 94.7 94.0 Moisture Can No S A V T R Weight of Can 135.41 135.07 134.74 135.09 135.78 Weight of Wet Soil & Can 543.02 687.54 637.69 765.17 462.07 Weight of Dry Soil & Can 450.88 553.13 503.32 589.75 365.84 Weight of Water 92.14 134.41 134.37 175.42 96.23 Weight of Dry Soil 315.47 418.06 368.58 454.66 230.06 Moisture Content (%)29.21%32.15%36.46%38.58%41.83% Dry Unit Weight (pcf)65.4 67.9 69.6 68.3 66.2 Comments: Tony Summers AMRL - N/A 1/9/2015 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 1/9/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.9 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.6 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-12 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 / 1 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4748 Roxboro Ash Density Testing Date: 1/17/15 Sample No: S-12 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 1/16/2015 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5516 5593 5642 5638 5636 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1301 1378 1427 1423 1421 Weight of Soil in Mold (lbs)2.868 3.038 3.146 3.137 3.133 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)86.4 91.5 94.8 94.5 94.4 Moisture Can No S A G V T Weight of Can 135.28 135.02 135.17 134.7 135.05 Weight of Wet Soil & Can 532.58 580.52 590.56 630.24 561.03 Weight of Dry Soil & Can 434.85 463.95 466.09 489.32 430.13 Weight of Water 97.73 116.57 124.47 140.92 130.9 Weight of Dry Soil 299.57 328.93 330.92 354.62 295.08 Moisture Content (%)32.62%35.44%37.61%39.74%44.36% Dry Unit Weight (pcf)65.1 67.6 68.9 67.6 65.4 Comments: Tony Summers AMRL - N/A 1/17/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 1/17/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2015 9/30/2014 7A-21/30/2014 Position 50 55 60 65 70 75 80 85 90 95 100 105 20 25 30 35 40 45 50 55 60 65 On Site Material Description TEST RESULTS 56.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 45.8 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-20 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 4 / 2 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4903 Roxboro Ash Density Testing Date: 4/21/15 Sample No: S-20 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 4/20/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5352 5400 5465 5460 5433 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1134 1182 1247 1242 1215 Weight of Soil in Mold (lbs)2.500 2.606 2.749 2.738 2.679 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)75.5 78.7 83.1 82.7 80.9 Moisture Can No G L D I B Weight of Can 135.12 134.83 135.27 135.04 134.94 Weight of Wet Soil & Can 444.09 418.2 610.11 522.01 547.68 Weight of Dry Soil & Can 358.08 334.19 459.54 396.85 409.63 Weight of Water 86.01 84.01 150.57 125.16 138.05 Weight of Dry Soil 222.96 199.36 324.27 261.81 274.69 Moisture Content (%)38.58%42.14%46.43%47.81%50.26% Dry Unit Weight (pcf)54.5 55.4 56.7 56.0 53.9 Comments: Tony Summers AMRL - N/A 4/21/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 4/21/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 50 55 60 65 70 75 80 85 90 95 25 30 35 40 45 50 55 60 On Site Material Description TEST RESULTS 61.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 46.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-21 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 4 / 3 0 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4910 Roxboro Ash Density Testing Date: 4/30/15 Sample No: S-21 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 4/29/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5435 5503 5560 5555 5535 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1217 1285 1342 1337 1317 Weight of Soil in Mold (lbs)2.683 2.833 2.959 2.948 2.903 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.1 85.6 89.4 89.0 87.7 Moisture Can No B X I BD CP Weight of Can 134.92 134.82 135.01 87.43 57.07 Weight of Wet Soil & Can 592.25 583.44 554.27 508.81 743.45 Weight of Dry Soil & Can 464.11 447.88 421.63 365.42 506.5 Weight of Water 128.14 135.56 132.64 143.39 236.95 Weight of Dry Soil 329.19 313.06 286.62 277.99 449.43 Moisture Content (%)38.93%43.30%46.28%51.58%52.72% Dry Unit Weight (pcf)58.3 59.7 61.1 58.7 57.4 Comments: Tony Summers AMRL - N/A 4/30/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 4/30/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report May 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 0 21,308.40 21,308.40 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 5,570.00 5,570.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 490.00 490.00 May 2015 Facility Totals 0 27,368.40 27,368.40 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sector H-8. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, twenty-one (21) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 206 Cell H-8 596.4 217* Cell H-8 600.5 207 Cell H-8 597.6 218* Cell H-8 600.5 208 Cell H-8 597.9 219 Cell H-8 600.5 209 Cell H-8 598.1 220 Cell H-8 600.3 210 Cell H-8 598.0 221* Cell H-8 600.8 211* Cell H-8 599.6 222* Cell H-8 600.9 212* Cell H-8 599.8 223 Cell H-8 601.0 213 Cell H-8 599.7 224 Cell H-8 601.0 214 Cell H-8 599.7 225 Cell H-8 601.6 215 Cell H-8 599.8 226 Cell H-8 600.9 216 Cell H-8 599.7 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated June 1, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Two (2) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Scott Nordgren, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Kyle Baucom, Duke Energy Walter Fox, Charah Rob Long, Charah Matthew Morris, Charah Chris Emory, Charah Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Ma y  20 1 5  To n n a g e  Su m m a r y DF A  to  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 0 . 0 0 0 . 0 0 P 4 H 7 , H 8 0 . 0 0 2n d   0. 0 0 0 . 0 0 0 . 0 0 N / A N / A 0 . 0 0 3r d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 4t h   0. 0 0 90 0 . 0 0 0. 0 0 P4 H7 , H 8 900.00 5t h   72 7 . 3 2 10 3 0 . 0 0 0. 0 0 P4 H7 , H 8 1757.32 6t h   79 9 . 9 8 98 0 . 0 0 0. 0 0 P4 H7 , H 8 1779.98 7t h   69 7 . 1 0 75 0 . 0 0 0. 0 0 P4 H7 , H 8 1447.10 8t h   0. 0 0 47 5 . 0 0 0. 0 0 P4 H7 , H 8 475.00 9t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 10 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 11 t h   70 9 . 1 4 83 5 . 0 0 0. 0 0 P4 H8 1544.14 12 t h   13 1 2 . 2 2 36 0 . 0 0 0. 0 0 P4 H8 1672.22 13 t h   15 9 4 . 1 6 0. 0 0 0. 0 0 P4 H8 1594.16 14 t h   10 3 9 . 4 4 0. 0 0 0. 0 0 P4 H8 1039.44 15 t h   12 8 6 . 2 0 0. 0 0 49 0 . 0 0 P4 H8 1776.20 16 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 17 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 18 t h   16 3 6 . 4 8 0. 0 0 0. 0 0 P4 H8 1636.48 19 t h   73 0 . 4 8 24 0 . 0 0 0. 0 0 P4 H8 970.48 20 t h   60 6 . 1 6 0. 0 0 0. 0 0 P4 H8 606.16 21 s t   98 5 . 9 0 0. 0 0 0. 0 0 P4 H8 985.90 22 n d   15 7 8 . 1 6 0. 0 0 0. 0 0 P4 H8 1578.16 23 r d   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 24 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 25 t h   15 0 1 . 2 2 0. 0 0 0. 0 0 P4 H8 1501.22 26 t h   10 8 7 . 4 6 0. 0 0 0. 0 0 P4 H8 1087.46 27 t h   13 6 2 . 8 4 0. 0 0 0. 0 0 P4 H8 1362.84 28 t h   14 5 5 . 9 0 0. 0 0 0. 0 0 P4 H8 1455.90 29 t h   21 9 8 . 2 4 0. 0 0 0. 0 0 P4 H8 2198.24 30 t h   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 31 s t   0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 MT D 21 , 3 0 8 . 4 0 5, 5 7 0 . 0 0 49 0 . 0 0 YT D 14 3 , 0 7 1 . 9 0 24 , 5 7 0 . 0 0 1, 5 1 5 . 0 0 16 9 , 1 5 6 . 9 0 Ro x b o r o  To n n a g e  Su m m a r y   Ma y ‐15 La n d f i l l e d 27 , 3 6 8 . 4 0 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com June 1, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES May 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of May 1 through May 31, 2015. During this reporting period, an ESP representative visited the site and performed twenty-one (21) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As reported by Charah personnel, ash material was not placed within the shell area during this reporting period prior to our testing on May 15, 2015. As a result of inherent variability of fill materials, the one- point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, Field Density and Laboratory Testing Services – May 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill June 1, 2015 2 oven laboratory moisture content testing (ASTM D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained two (2) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – May 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill June 1, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (3 sheets) Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates One Point Plots – May 2015 (2 sheets) Moisture-Density Relationship (S-1, S-6, S-7, S-16, S-22 and S-23) Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 206 Landfill: Cell H-8 (See attached sketch dated 5-6-15)596.4 Greater than 100 ft. from crest 1027 SCAFF, Clyde 207 Landfill: Cell H-8 (See attached sketch dated 5-6-15)597.6 Greater than 100 ft. from crest 1027 SCAFF, Clyde 208 Landfill: Cell H-8 (See attached sketch dated 5-6-15)597.9 Greater than 100 ft. from crest 1027 SCAFF, Clyde 209 Landfill: Cell H-8 (See attached sketch dated 5-6-15)598.1 Greater than 100 ft. from crest 1027 SCAFF, Clyde 210 Landfill: Cell H-8 (See attached sketch dated 5-6-15)598.0 Greater than 100 ft. from crest 1027 SCAFF, Clyde 211 Landfill - Shell: Cell H-8 (See attached sketch dated 5-15-15)599.6 Landfill Shell 32385 SCAFF, Clyde 212 Landfill - Shell: Cell H-8 (See attached sketch 5-15-15)599.8 Landfill Shell 32385 SCAFF, Clyde 213 Landfill: Cell H-8 (See attached sketch dated 5-15-15)599.7 Greater than 100 ft. from crest 32385 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 206 5/6/15 S-16 A F Ash 32.9 71.8 33 64.7 12 90 90 207 5/6/15 S-16 A F Ash 32.9 71.8 30.7 67.3 12 94 90 208 5/6/15 S-16 A F Ash 32.9 71.8 30.6 66.9 12 93 90 209 5/6/15 S-16 A F Ash 32.9 71.8 33.2 68.7 12 96 90 210 5/6/15 S-16 A F Ash 32.9 71.8 35.4 68.2 12 95 90 211 5/15/15 S-1 A F Ash 38.3 67.2 38.4 68.1 12 101 95 212 5/15/15 S-1 A F Ash 38.3 67.2 37.4 65.8 12 98 95 213 5/15/15 S-1 A F Ash 38.3 67.2 37.1 63.5 12 94 90 Page 1 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 5/29/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 214 Landfill: Cell H-8 (See attached sketch dated 5-15-15)599.7 Greater than 100 ft. from crest 32385 SCAFF, Clyde 215 Landfill: Cell H-8 (See attached sketch dated 5-15-15)599.8 Greater than 100 ft. from crest 32385 SCAFF, Clyde 216 Landfill: Cell H-8 (See attached sketch dated 5-15-15)599.7 Greater than 100 ft. from crest 32385 SCAFF, Clyde 217 Landfill - Shell: Cell H-8 (See attached sketch dated 5-19-15)600.5 Landfill Shell 32385 SCAFF, Clyde 218 Landfill - Shell: Cell H-8 (See attached sketch dated 5-19-15)600.5 Landfill Shell 32385 SCAFF, Clyde 219 Landfill: Cell H-8 (See attached sketch dated 5-19-15)600.5 Greater than 100 ft. from crest 32385 SCAFF, Clyde 220 Landfill: Cell H-8 (See attached sketch dated 5-19-15)600.3 Greater than 100 ft. from crest 32385 SCAFF, Clyde 221 Landfill - Shell: Cell H-8 (See attached sketch dated 5-26-15)600.8 Landfill Shell 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 214 5/15/15 S-1 A F Ash 38.3 67.2 37 63.8 12 95 90 215 5/15/15 S-1 A F Ash 38.3 67.2 33.7 63.5 12 94 90 216 5/15/15 S-1 A F Ash 38.3 67.2 30 65.8 12 98 90 217 5/19/15 S-7 A F Ash 32.4 72.2 38.4 69.2 12 96 95 218 5/19/15 S-7 A F Ash 32.4 72.2 34.6 71.7 12 99 95 219 5/19/15 S-7 A F Ash 32.4 72.2 35.8 64.8 12 90 90 220 5/19/15 S-7 A F Ash 32.4 72.2 38.3 65.4 12 91 90 221 5/26/15 S-6 A F Ash 42.0 64.8 28.4 66.4 12 102 95 Page 2 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 5/29/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge SN Field Technician 222 Landfill - Shell: Cell H-8 (See attached sketch dated 5-26-15)600.9 Landfill Shell 1149 SCAFF, Clyde 223 Landfill: Cell H-8 (See attached sketch dated 5-26-15)601.0 Greater than 100 ft. from crest 1149 SCAFF, Clyde 224 Landfill: Cell H-8 (See attached sketch dated 5-26-15)601.0 Greater than 100 ft. from crest 1149 SCAFF, Clyde 225 Landfill: Cell H-8 (See attached sketch dated 5-26-15)601.6 Greater than 100 ft. from crest 1149 SCAFF, Clyde 226 Landfill: Cell H-8 (See attached sketch dated 5-26-15)600.9 Greater than 100 ft. from crest 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter" Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 222 5/26/15 S-6 A F Ash 42.0 64.8 37.4 61.6 12 95 95 223 5/26/15 S-6 A F Ash 42.0 64.8 32.4 61.3 12 95 90 224 5/26/15 S-6 A F Ash 42.0 64.8 30.8 61.2 12 94 90 225 5/26/15 S-6 A F Ash 42.0 64.8 32.5 60.8 12 94 90 226 5/26/15 S-6 A F Ash 42.0 64.8 33.5 61.5 12 95 90 Page 3 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 5/29/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 5/6/2015 206 993116.030 1982002.013 596.4 5/6/2015 207 993192.361 1981958.229 597.6 5/6/2015 208 993132.846 1981885.080 597.9 5/6/2015 209 993039.356 1981923.540 598.1 5/6/2015 210 993072.835 1981816.767 598.0 5/15/2015 211 993461.512 1981968.120 599.6 5/15/2015 212 993370.596 1981927.292 599.8 5/15/2015 213 993358.772 1982018.468 599.7 5/15/2015 214 993270.118 1981962.669 599.7 5/15/2015 215 993238.737 1982064.785 599.8 5/15/2015 216 993183.265 1982021.238 599.7 5/19/2015 217 993243.496 1981844.888 600.5 5/19/2015 218 993161.995 1981775.464 600.5 5/19/2015 219 993194.702 1981926.398 600.5 5/19/2015 220 993114.653 1981867.304 600.3 5/26/2015 221 993474.239 1981971.08 600.8 5/26/2015 222 993372.721 1981928.798 600.9 5/26/2015 223 993317.346 1982057.826 601.0 5/26/2015 224 993274.888 1981982.586 601.0 5/26/2015 225 993202.093 1982109.555 601.6 5/26/2015 226 993184.472 1982026.941 600.9 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-1 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 0 / 1 5 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4634 Roxboro Ash Density Testing Date: 10/14/14 Sample No: S-1 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 10/13/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5458 5529 5590 5620 5598 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1243 1314 1375 1405 1383 Weight of Soil in Mold (lbs)2.740 2.897 3.031 3.097 3.049 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)82.5 87.3 91.3 93.3 91.8 Moisture Can No R O TS OL E Weight of Can 249.02 263.21 229.41 239.91 268.53 Weight of Wet Soil & Can 984.75 1014.69 1159.49 1046.86 1157.77 Weight of Dry Soil & Can 820.44 830.38 911.25 817.24 896.52 Weight of Water 164.31 184.31 248.24 229.62 261.25 Weight of Dry Soil 571.42 567.17 681.84 577.33 627.99 Moisture Content (%)28.75%32.50%36.41%39.77%41.60% Dry Unit Weight (pcf)64.1 65.9 66.9 66.7 64.9 Comments: Tony Summers AMRL - N/A 10/14/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 10/14/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 64.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 42.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-6 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/2/14 Sample No: S-6 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/1/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5415 5508 5551 5605 5585 5584 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1200 1293 1336 1390 1370 1369 Weight of Soil in Mold (lbs)2.646 2.851 2.945 3.064 3.020 3.018 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)79.7 85.9 88.7 92.3 91.0 90.9 Moisture Can No R B P W M O Weight of Can 83.35 134.96 134.85 134.78 135.73 83.03 Weight of Wet Soil & Can 374.58 439.94 462.06 618.21 465.02 452.17 Weight of Dry Soil & Can 306.65 358.12 370.04 473.65 362.12 331.55 Weight of Water 67.93 81.82 92.02 144.56 102.9 120.62 Weight of Dry Soil 223.3 223.16 235.19 338.87 226.39 248.52 Moisture Content (%)30.42%36.66%39.13%42.66%45.45%48.54% Dry Unit Weight (pcf)61.1 62.8 63.8 64.7 62.5 61.2 Comments: Tony Summers AMRL - N/A 12/2/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/2/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-7 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/4/14 Sample No: S-7 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/3/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5424 5490 5545 5655 5654 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1209 1275 1330 1440 1439 Weight of Soil in Mold (lbs)2.665 2.811 2.932 3.175 3.172 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.3 84.7 88.3 95.6 95.6 Moisture Can No X R V T G Weight of Can 134.92 134.72 134.84 135.08 135.74 Weight of Wet Soil & Can 481.5 486.22 514.81 610.15 634.67 Weight of Dry Soil & Can 425.08 418.82 433.46 493.96 498.42 Weight of Water 56.42 67.4 81.35 116.19 136.25 Weight of Dry Soil 290.16 284.1 298.62 358.88 362.68 Moisture Content (%)19.44%23.72%27.24%32.38%37.57% Dry Unit Weight (pcf)67.2 68.4 69.4 72.2 69.5 Comments: Tony Summers AMRL - N/A 12/4/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/4/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 71.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-16 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4827 Roxboro Ash Density Testing Date: 3/6/15 Sample No: S-16 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/6/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5514 5558 5659 5672 5658 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1288 1332 1433 1446 1432 Weight of Soil in Mold (lbs)2.840 2.937 3.159 3.188 3.157 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.8 88.7 95.4 96.3 95.4 Moisture Can No X S B C L Weight of Can 134.9 135.23 134.94 135.46 134.95 Weight of Wet Soil & Can 504.21 508.62 488.15 492.78 484.12 Weight of Dry Soil & Can 428.62 349.48 400.66 398.34 386.53 Weight of Water 75.59 159.14 87.49 94.44 97.59 Weight of Dry Soil 293.72 214.25 265.72 262.88 251.58 Moisture Content (%)25.74%74.28%32.93%35.93%38.79% Dry Unit Weight (pcf)68.2 50.9 71.8 70.9 68.7 Comments: Tony Summers AMRL - N/A 3/7/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/7/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-22 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4935 Roxboro Ash Density Testing Date: 5/13/15 Sample No: S-22 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/12/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5450 5538 5620 5617 5609 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1232 1320 1402 1399 1391 Weight of Soil in Mold (lbs)2.716 2.910 3.091 3.084 3.067 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)82.1 87.9 93.4 93.2 92.6 Moisture Can No Q T G X B Weight of Can 135.12 135.04 135.03 134.81 134.88 Weight of Wet Soil & Can 472.47 511.09 699.61 574.44 578.87 Weight of Dry Soil & Can 403.58 425.7 559.92 455.32 448.11 Weight of Water 68.89 85.39 139.69 119.12 130.76 Weight of Dry Soil 268.46 290.66 424.89 320.51 313.23 Moisture Content (%)25.66%29.38%32.88%37.17%41.75% Dry Unit Weight (pcf)65.3 68.0 70.3 67.9 65.4 Comments: Tony Summers AMRL - N/A 5/13/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/13/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-23 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4945 Roxboro Ash Density Testing Date: 5/19/15 Sample No: S-23 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/18/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5443 5500 5594 5625 5604 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1225 1282 1376 1407 1386 Weight of Soil in Mold (lbs)2.701 2.826 3.034 3.102 3.056 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.6 85.4 91.6 93.7 92.3 Moisture Can No X V A P R Weight of Can 134.81 134.53 134.95 134.63 134.84 Weight of Wet Soil & Can 436.2 524.96 527.17 620.36 471.38 Weight of Dry Soil & Can 366.72 425.84 417.08 477.39 364.83 Weight of Water 69.48 99.12 110.09 142.97 106.55 Weight of Dry Soil 231.91 291.31 282.13 342.76 229.99 Moisture Content (%)29.96%34.03%39.02%41.71%46.33% Dry Unit Weight (pcf)62.8 63.7 65.9 66.1 63.1 Comments: Tony Summers AMRL - N/A 5/19/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/19/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report June 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 and 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 29,770.14 15,936.70 45,706.84 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 75.00 75.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 June 2015 Facility Totals 29,770.14 16,011.70 45,781.84 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sector H-8, I-10, and J-10. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, twenty (20) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 227* Cell H-8 602.4 237 Cell H-8 602.3 228 Cell H-8 602.4 238* Cell H-8 601.9 229 Cell H-8 602.8 239 Cell H-8 603.3 230* Cell H-8 603.2 240 Cell H-8 602.9 231* Cell H-8 602.8 241* Cell H-8 602.1 232* Cell H-8 602.4 242 Cell I-10 520.9 233* Cell H-8 601.5 243 Cell J-10 523.6 234* Cell H-8 601.5 244* Cell I-10 522.0 235 Cell H-8 603.4 245 Cell I-10 522.0 236 Cell H-8 602.9 246 Cell J-10 522.0 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated July 1, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Three (3) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Scott Nordgren, Duke Energy Luke Cagle, Duke Energy Evan Andrews, Duke Energy Kyle Baucom, Duke Energy Walter Fox, Charah Rob Long, Charah Matthew Morris, Charah Chris Emory, Charah Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Ju n e  20 1 5  To n n a g e  Su m m a r y DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s To n s Ph a s e Gr i d Total 1s t   15 3 3 . 0 4 0 . 0 0 0 . 0 0 0 . 0 0 P 4 H 8 1 5 3 3 . 0 4 2n d   20 2 2 . 6 6 0. 0 0 0. 0 0 0. 0 0 P4 H8 2022.66 3r d   18 2 9 . 8 0 0. 0 0 0. 0 0 0. 0 0 P4 H8 1829.80 4t h   97 4 . 6 8 0. 0 0 0. 0 0 0. 0 0 P4 H8 974.68 5t h   19 6 1 . 8 2 0. 0 0 0. 0 0 0. 0 0 P4 H8 1961.82 6t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 7t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 8t h   17 5 5 . 0 6 0. 0 0 0. 0 0 0. 0 0 P4 H8 1755.06 9t h   20 4 9 . 1 2 0. 0 0 0. 0 0 0. 0 0 P4 H8 2049.12 10 t h   12 8 7 . 3 2 0. 0 0 0. 0 0 0. 0 0 P4 H8 1287.32 11 t h   10 9 5 . 7 6 0. 0 0 75 . 0 0 0. 0 0 P4 H8 1170.76 12 t h   14 2 7 . 4 4 84 4 . 5 0 0. 0 0 0. 0 0 P4 / P 6 H9 / I 1 0 2271.94 13 t h   0. 0 0 77 8 . 1 0 0. 0 0 0. 0 0 P6 I1 0 778.10 14 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 15 t h   0. 0 0 20 4 0 . 9 0 0. 0 0 0. 0 0 P6 I1 0 2040.90 16 t h   0. 0 0 21 0 9 . 3 2 0. 0 0 0. 0 0 P6 I1 0 2109.32 17 t h   0. 0 0 22 3 7 . 8 6 0. 0 0 0. 0 0 P6 I1 0 2237.86 18 t h   0. 0 0 20 5 7 . 8 2 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2057.82 19 t h   0. 0 0 18 1 7 . 9 0 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 1817.90 20 t h   0. 0 0 20 9 2 . 8 0 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2092.80 21 s t   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 22 n d   0. 0 0 19 7 7 . 9 4 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 1977.94 23 r d   0. 0 0 22 3 8 . 5 4 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2238.54 24 t h   0. 0 0 18 0 2 . 6 6 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 1802.66 25 t h   0. 0 0 24 1 3 . 6 8 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2413.68 26 t h   0. 0 0 19 6 2 . 9 0 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 1962.90 27 t h   0. 0 0 94 2 . 7 8 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 942.78 28 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 29 t h   0. 0 0 23 3 0 . 8 4 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2330.84 30 t h   0. 0 0 21 2 1 . 6 0 0. 0 0 0. 0 0 P6 I1 0 ,  J1 0 2121.60 MT D 15 , 9 3 6 . 7 0 29 , 7 7 0 . 1 4 75 . 0 0 0. 0 0 YT D 15 9 , 0 0 8 . 6 0 29 , 7 7 0 . 1 4 24 , 6 4 5 . 0 0 15 1 5 . 0 0 21 4 , 9 3 8 . 7 4 Ro x b o r o  To n n a g e  Su m m a r y   Ju n e ‐15 La n d f i l l e d 45 , 7 8 1 . 8 4 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com July 1, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES June 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of June 1 through June 30, 2015. During this reporting period, an ESP representative visited the site and performed twenty (20) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM D2216) was performed for each field nuclear density gauge test and are the reported moisture values Field Density and Laboratory Testing Services – June 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill July 1, 2015 2 on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained three (3) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – June 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill July 1, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (3 sheets) Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – June 2015 (3 sheets) Moisture-Density Relationship (S-2, S-3, S-7, S-8, S-24 through S-26) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 227 Landfill - Shell: Cell H-8 (See attached sketch dated 6-3-15)602.4 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 228 Landfill: Cell H-8 (See attached sketch dated 6-3-15)602.4 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 229 Landfill: Cell H-8 (See attached sketch dated 6-3-15)602.8 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 230 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)603.2 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 231 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)602.8 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 232 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)602.4 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 233 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)601.5 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 234 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)601.5 Landfill Shell Troxler 3450 1026D SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 227 6/3/15 S-3 A B Ash 37.0 66.2 38.4 66.9 12 101 95 228 6/3/15 S-3 A B Ash 37.0 66.2 40.9 62.1 12 94 90 229 6/3/15 S-3 A B Ash 37.0 66.2 41.3 62.5 12 94 90 230 6/11/15 S-2 A F Ash 38.2 66.7 38.9 66.3 12 99 95 231 6/11/15 S-2 A F Ash 38.2 66.7 40.1 65.0 12 97 95 232 6/11/15 S-2 A F Ash 38.2 66.7 40.5 66.3 12 99 95 233 6/11/15 S-2 A F Ash 38.2 66.7 41.1 66.4 12 100 95 234 6/11/15 S-2 A F Ash 38.2 66.7 38.6 65.3 12 98 95 Page 1 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 6/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 235 Landfill: Cell H-8 (See attached sketch dated 6-11-15)603.4 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 236 Landfill: Cell H-8 (See attached sketch dated 6-11-15)602.9 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 237 Landfill: Cell H-8 (See attached sketch dated 6-11-15)602.3 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 238 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)601.9 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 239 Landfill: Cell H-8 (See attached sketch dated 6-11-15)603.3 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 240 Landfill: Cell H-8 (See attached sketch dated 6-11-15)602.9 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 241 Landfill - Shell: Cell H-8 (See attached sketch dated 6-11-15)602.1 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 242 Landfill: Cell I-10 (See attached sketch dated 6-18-15)520.9 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 235 6/11/15 S-2 A F Ash 38.2 66.7 38 62.5 12 94 90 236 6/11/15 S-2 A F Ash 38.2 66.7 41.8 63.6 12 95 90 237 6/11/15 S-2 A F Ash 38.2 66.7 31.3 63.2 12 95 90 238 6/11/15 S-2 A F Ash 38.2 66.7 33 63.1 12 95 95 239 6/11/15 S-2 A F Ash 38.2 66.7 30.8 61.2 12 92 90 240 6/11/15 S-2 A F Ash 38.2 66.7 39.9 65.2 12 98 90 241 6/11/15 S-2 A F Ash 38.2 66.7 35 68.0 12 102 95 242 6/18/15 S-7 A F Ash 32.4 72.2 30.6 72.4 12 100 90 Page 2 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 6/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 243 Landfill: Cell J-10 (See attached sketch dated 6-18-15)523.6 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 244 Landfill - Shell: Cell I-10 (See attached sketch dated 6-24-15)522.0 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 245 Landfill: Cell I-10 (See attached sketch dated 6-24-15)522.0 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 246 Landfill: Cell J-10 (See attached sketch dated 6-24-15)522.0 Greater than 100 ft from crest Troxler 3450 1026D SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 243 6/18/15 S-7 A F Ash 32.4 72.2 31.9 72.3 12 100 90 244 6/24/15 S-8 A F Ash 38.3 65.1 27.6 64.7 12 99 95 245 6/24/15 S-8 A F Ash 38.3 65.1 28.7 64.0 12 98 90 246 6/24/15 S-8 A F Ash 38.3 65.1 27.8 63.4 12 97 90 Page 3 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 6/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 6/3/2015 227 993451.912 1981966.984 602.4 6/3/2015 228 993353.817 1982009.468 602.4 6/3/2015 229 993260.815 1982049.590 602.8 6/11/2015 230 993482.081 1981992.683 603.1 6/11/2015 231 993388.918 1981950.221 602.8 6/11/2015 232 993299.608 1981908.583 602.4 6/11/2015 233 993222.574 1981856.651 601.5 6/11/2015 234 993152.380 1981793.918 601.5 6/11/2015 235 993316.338 1982041.027 603.4 6/11/2015 236 993240.596 1981992.568 602.8 6/11/2015 237 993161.110 1981941.541 602.3 6/11/2015 238 993110.174 1981886.344 601.9 6/11/2015 239 993197.775 1982104.503 603.3 6/11/2015 240 993154.346 1982055.647 602.9 6/11/2015 241 993093.251 1981980.101 602.1 6/18/2015 242 992487.485 1981808.794 520.9 6/18/2015 243 993490.682 1981919.302 523.6 6/24/2015 244 992408.85 1981763.65 522.0 6/24/2015 245 992405.70 1981859.30 522.0 6/24/2015 246 992430.60 1981951.60 522.0 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On-site Material Description TEST RESULTS 66.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-2 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 1 / 1 5 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4683 Roxboro Ash Density Testing Date: 11/7/14 Sample No: S-2 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 11/5/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5432 5513 5585 5599 5607 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1217 1298 1370 1384 1392 Weight of Soil in Mold (lbs)2.683 2.862 3.020 3.051 3.069 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.8 86.2 91.0 91.9 92.4 Moisture Can No X Q B N K Weight of Can 134.08 135.1 135.46 134.91 135.31 Weight of Wet Soil & Can 576.96 579.97 532.44 683.89 569.98 Weight of Dry Soil & Can 476.82 470.23 425.36 532.27 439.66 Weight of Water 100.14 109.74 107.08 151.62 130.32 Weight of Dry Soil 342.74 335.13 289.9 397.36 304.35 Moisture Content (%)29.22%32.75%36.94%38.16%42.82% Dry Unit Weight (pcf)62.5 64.9 66.4 66.5 64.7 Comments: Tony Summers AMRL - N/A 11/7/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 11/7/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-3 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 1 / 1 5 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4684 Roxboro Ash Density Testing Date: 11/14/14 Sample No: S-3 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 11/13/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5457 5578 5570 5591 5598 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1242 1363 1355 1376 1383 Weight of Soil in Mold (lbs)2.738 3.005 2.987 3.034 3.049 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)82.5 90.5 90.0 91.4 91.8 Moisture Can No C M F W H Weight of Can 135.43 134.96 135.00 134.62 134.99 Weight of Wet Soil & Can 680.4 637.21 709.75 662.02 562.13 Weight of Dry Soil & Can 547.41 509.47 556.95 512.03 429.04 Weight of Water 132.99 127.74 152.8 149.99 133.09 Weight of Dry Soil 411.98 374.51 421.95 377.41 294.05 Moisture Content (%)32.28%34.11%36.21%39.74%45.26% Dry Unit Weight (pcf)62.3 67.5 66.1 65.4 63.2 Comments: Tony Summers AMRL - N/A 11/14/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 11/14/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.2 Zero Air Voids Curves For Gs = 2 6 - 2 8 32.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-7 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 4 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4710 Roxboro Ash Density Testing Date: 12/4/14 Sample No: S-7 Tech: N. Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/3/2014 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5424 5490 5545 5655 5654 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1209 1275 1330 1440 1439 Weight of Soil in Mold (lbs)2.665 2.811 2.932 3.175 3.172 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.3 84.7 88.3 95.6 95.6 Moisture Can No X R V T G Weight of Can 134.92 134.72 134.84 135.08 135.74 Weight of Wet Soil & Can 481.5 486.22 514.81 610.15 634.67 Weight of Dry Soil & Can 425.08 418.82 433.46 493.96 498.42 Weight of Water 56.42 67.4 81.35 116.19 136.25 Weight of Dry Soil 290.16 284.1 298.62 358.88 362.68 Moisture Content (%)19.44%23.72%27.24%32.38%37.57% Dry Unit Weight (pcf)67.2 68.4 69.4 72.2 69.5 Comments: Tony Summers AMRL - N/A 12/4/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/4/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-8 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 3 0 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4730 Roxboro Ash Density Testing Date: 12/19/14 Sample No: S-8 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/19/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5363 5416 5461 5500 5562 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1147 1201 1246 1285 1347 Weight of Soil in Mold (lbs)2.529 2.648 2.747 2.833 2.970 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)76.2 79.8 82.7 85.3 89.4 Moisture Can No J R S M G Weight of Can 135.12 134.8 135.40 135.6 135.28 Weight of Wet Soil & Can 526.49 610.67 574.08 496.28 501.66 Weight of Dry Soil & Can 450.24 506.83 470.37 405.59 401.54 Weight of Water 76.25 103.84 103.71 90.69 100.12 Weight of Dry Soil 315.12 372.03 334.97 269.99 266.26 Moisture Content (%)24.20%27.91%30.96%33.59%37.60% Dry Unit Weight (pcf)61.3 62.3 63.2 63.9 65.0 Comments: Tony Summers AMRL - N/A 12/19/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/19/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-24 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4969 Roxboro Ash Density Testing Date: 6/1/15 Sample No: S-24 Tech: C. Pratt *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/30/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5494 5554 5624 5626 5623 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1276 1336 1406 1408 1405 Weight of Soil in Mold (lbs)2.813 2.945 3.100 3.104 3.097 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.0 89.0 93.6 93.8 93.6 Moisture Can No E I R X B Weight of Can 135.23 135.00 134.86 134.82 134.84 Weight of Wet Soil & Can 573.30 544.44 669.71 551.71 696.85 Weight of Dry Soil & Can 470.89 442.32 521.26 428.68 519.12 Weight of Water 102.41 102.12 148.45 123.03 177.73 Weight of Dry Soil 335.66 307.32 386.4 293.86 384.28 Moisture Content (%)30.51%33.23%38.42%41.87%46.25% Dry Unit Weight (pcf)65.1 66.8 67.7 66.1 64.0 Comments: Tony Summers AMRL - N/A 6/1/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/1/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 39.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-25 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 2 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.306 Project Name: Lab No: 5006 Mayo Ash Density Testing Date: 6/27/15 Sample No: S-7 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 6/26/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5671 5757 5862 5857 5842 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1453 1539 1644 1639 1624 Weight of Soil in Mold (lbs)3.203 3.393 3.624 3.613 3.580 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)96.8 102.5 109.5 109.2 108.2 Moisture Can No A-117 A-10 SR-71 CB JR1 Weight of Can 86.78 87.07 86.63 86.95 87.37 Weight of Wet Soil & Can 869.4 975.76 836.55 919.22 809.9 Weight of Dry Soil & Can 770.52 836.88 699.21 753.6 656.13 Weight of Water 98.88 138.88 137.34 165.62 153.77 Weight of Dry Soil 683.74 749.81 612.58 666.65 568.76 Moisture Content (%)14.46%18.52%22.42%24.84%27.04%Dry Unit Weight (pcf)84.5 86.5 89.4 87.4 85.1 Comments: Tony Summers AMRL - N/A 6/27/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/27/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 71.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-26 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 3 0 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4993A Roxboro Ash Density Testing Date: 6/27/15 Sample No: S-26 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 6/26/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5466 5536 5626 5667 5658 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1248 1318 1408 1449 1440 Weight of Soil in Mold (lbs)2.751 2.906 3.104 3.194 3.175 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)83.1 87.8 93.8 96.5 95.9 Moisture Can No H B JL KC JS Weight of Can 134.9 134.88 87.03 87.74 87.22 Weight of Wet Soil & Can 455.02 638.52 637.51 631.97 845.37 Weight of Dry Soil & Can 395.25 530.12 505.99 490.87 633.18 Weight of Water 59.77 108.4 131.52 141.1 212.19 Weight of Dry Soil 260.35 395.24 418.96 403.13 545.96 Moisture Content (%)22.96%27.43%31.39%35.00%38.87% Dry Unit Weight (pcf)67.6 68.9 71.4 71.5 69.1 Comments: Tony Summers AMRL - N/A 6/27/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/27/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report July 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 4/5 and 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 49,759.06 1,885.96 51,645.02 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 0 0 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 July 2015 Facility Totals 49,759.06 1,885.96 51,645.02 *Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sector I-10-11, and J-10-11, K-11, L-11-12, and M-10-12. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, thirty eight (38) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation Test ID Location Elevation 247 Cell J-10 527.9 260 Cell K-11 530.7 273 Cell K-11 535.5 248 Cell J-10 525.5 261 Cell L-11 532.8 274 Cell K-11 537.6 249* Cell I-10 522.9 262 Cell L-11 534.5 275 Cell L-11 539.4 250 Cell I-10 528.0 263 Cell L-12 538.0 276 Cell L-12 539.6 251 Cell J-10 525.8 264 Cell M-12 540.6 277 Cell M-12 542.4 252* Cell I-10 524.7 265 Cell M-11 536.8 278 Cell M-12 544.7 253 Cell J-11 530.2 266 Cell L-11 534.2 279 Cell L-11 536.4 254 Cell J-11 528.8 267 Cell I-11 529.0 280 Cell M-11 538.6 255* Cell I-11 526.8 268* Cell J-11 531.4 281 Cell M-11 540.7 256* Cell I-11 526.4 269* Cell J-11 532.6 282 Cell L-10 535.1 257 Cell L-11 527.4 270* Cell I-11 526.9 283 Cell M-10 537.1 258 Cell J-11 528.1 271 Cell J-11 529.9 284 Cell M-10 538.9 259 Cell K-11 528.9 272 Cell J-11 531.2 * Shell Test Location 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated August 3, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Three (3) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Ju l y  20 1 5  To n n a g e  Su m m a r y DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 1 8 4 7 . 6 8 0 . 0 0 0 . 0 0 P 6 I 1 0 , J 1 0 1 8 4 7 . 6 8 2n d   20 0 . 2 0 1 2 4 7 . 5 6 0 . 0 0 0 . 0 0 P 6 I 1 0 , J 1 0 1 4 4 7 . 7 6 3r d   44 0 . 8 2 9 6 6 . 5 4 0 . 0 0 0 . 0 0 P 6 I 1 0 , J 1 0 1 4 0 7 . 3 6 4t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 5t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 6t h   0. 0 0 21 4 8 . 7 0 0. 0 0 0. 0 0 P6 I1 0 , J 1 0 2148.70 7t h   0. 0 0 16 2 5 . 2 8 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 1625.28 8t h   0. 0 0 20 1 1 . 9 4 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 2011.94 9t h   0. 0 0 20 2 5 . 3 4 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 2025.34 10 t h   0. 0 0 25 0 7 . 5 0 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 2507.50 11 t h   10 4 5 . 7 8 0. 0 0 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 1045.78 12 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 13 t h   19 9 . 1 6 18 1 0 . 7 6 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 2009.92 14 t h   0. 0 0 14 4 9 . 8 2 0. 0 0 0. 0 0 P6 K1 1 ,  L1 1 1449.82 15 t h   0. 0 0 24 2 6 . 7 8 0. 0 0 0. 0 0 P6 I1 0 ,  I1 1 2426.78 16 t h   0. 0 0 29 8 1 . 5 4 0. 0 0 0. 0 0 P6 I1 0 , I 1 1 2981.54 17 t h   0. 0 0 20 6 3 . 0 4 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2063.04 18 t h   0. 0 0 74 6 . 6 4 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 746.64 19 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 20 t h   0. 0 0 25 9 0 . 7 4 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2590.74 21 s t   0. 0 0 23 4 7 . 0 2 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2347.02 22 n d   0. 0 0 24 2 0 . 4 2 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2420.42 23 r d   0. 0 0 23 9 5 . 9 0 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2395.90 24 t h   0. 0 0 23 3 9 . 3 2 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2339.32 25 t h   0. 0 0 11 6 7 . 7 8 0. 0 0 0. 0 0 P6 L1 1 1167.78 26 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 27 t h   0. 0 0 23 5 9 . 7 8 0. 0 0 0. 0 0 P6 L1 0 2359.78 28 t h   0. 0 0 24 8 1 . 9 8 0. 0 0 0. 0 0 P6 M1 0 2481.98 29 t h   0. 0 0 21 9 3 . 5 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2193.56 30 t h   0. 0 0 14 8 6 . 7 0 0. 0 0 0. 0 0 P6 M1 1 1486.70 31 s t   0. 0 0 21 1 6 . 7 4 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2116.74 MT D 1, 8 8 5 . 9 6 49 , 7 5 9 . 0 6 0. 0 0 0. 0 0 YT D 16 0 , 8 9 4 . 5 6 79 , 5 2 9 . 2 0 24 , 6 4 5 . 0 0 15 1 5 . 0 0 Ro x b o r o  To n n a g e  Su m m a r y   Ju l y ‐15 La n d f i l l e d 51 , 6 4 5 . 0 2 26 6 , 5 8 3 . 7 6 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com August 3, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES July 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of July 1 through July 31, 2015. During this reporting period, an ESP representative visited the site and performed thirty-eight (38) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM D2216) was performed for each field nuclear density gauge test and are the reported moisture values Field Density and Laboratory Testing Services – July 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill August 3, 2015 2 on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell and equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. During this period, ESP obtained three (3) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – July 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill August 3, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (5 sheets) Density Test Location Sketches (5 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – July 2015 (2 sheets) Moisture-Density Relationship (S-13, S-22, S-24, S-25 and S-27 through S-29) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 247 Landfill: Cell J-10 (See attached sketch dated 7-2-15)527.9 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 248 Landfill: Cell J-10 (See attached sketch dated 7-2-15)525.5 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 249 Landfill - Shell: Cell I-10 (See attached sketch dated 7-2-15)522.9 Landfill Shell Troxler 3450 1149 SCAFF, Clyde 250 Landfill: Cell I-10 (See attached sketch dated 7-2-15)528.0 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 251 Landfill: Cell J-10 (See attached sketch dated 7-2-15)525.9 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 252 Landfill - Shell: Cell I-10 (See attached sketch dated 7-2-15)524.7 Landfill Shell Troxler 3450 1149 SCAFF, Clyde 253 Landfill: Cell J-11 (See attached sketch dated 7-2-15)530.2 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 254 Landfill: Cell J-11 (See attached sketch dated 7-2-15)528.8 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 247 7/2/15 S-13 A F Ash 39.8 66.8 31.8 63.7 12 95 90 248 7/2/15 S-13 A F Ash 39.8 66.8 38.1 62.9 12 94 90 249 7/2/15 S-13 A F Ash 39.8 66.8 37.3 64.9 12 97 95 250 7/2/15 S-13 A F Ash 39.8 66.8 34.4 65.7 12 98 90 251 7/2/15 S-13 A F Ash 39.8 66.8 39.8 64.2 12 96 90 252 7/2/15 S-13 A F Ash 39.8 66.8 37.6 65.4 12 98 95 253 7/2/15 S-13 A F Ash 39.8 66.8 33.3 65.5 12 98 90 254 7/2/15 S-13 A F Ash 39.8 66.8 36.7 63.5 12 95 90 Page 1 of 5 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 255 Landfill - Shell: Cell I-11 (See attached sketch dated 7-2-15)526.8 Landfill Shell Troxler 3450 1149 SCAFF, Clyde 256 Landfill - Shell: Cell I-11 (See attached sketch dated 7-8-15)526.4 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 257 Landfill: Cell L-11 (See attached sketch dated 7-8-15)527.4 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 258 Landfill: Cell J-11 (See attached sketch dated 7-8-15)528.1 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 259 Landfill: Cell K-11 (See attached sketch dated 7-8-15)528.9 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 260 Landfill: Cell K-11 (See attached sketch dated 7-8-15)530.7 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 261 Landfill: Cell L-11 (See attached sketch dated 7-8-15)532.8 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 262 Landfill: Cell L-11 (See attached sketch dated 7-8-15)534.5 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 255 7/2/15 S-13 A F Ash 39.8 66.8 32.4 67.3 12 101 95 256 7/8/15 S-22 A F Ash 33.2 70.3 33.0 69.5 12 99 95 257 7/8/15 S-22 A F Ash 33.2 70.3 36.5 64.0 12 91 90 258 7/8/15 S-22 A F Ash 33.2 70.3 37.5 66.3 12 94 90 259 7/8/15 S-22 A F Ash 33.2 70.3 37.2 66.3 12 94 90 260 7/8/15 S-22 A F Ash 33.2 70.3 35.9 68.3 12 97 90 261 7/8/15 S-22 A F Ash 33.2 70.3 34.2 67.3 12 96 90 262 7/8/15 S-22 A F Ash 33.2 70.3 36.0 68.1 12 97 90 Page 2 of 5 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 263 Landfill: Cell L-12 (See attached sketch dated 7-15-15)538.0 Landfill Shell Troxler 3450 114 SCAFF, Clyde 264 Landfill: Cell M-12 (See attached sketch dated 7-15-15)540.6 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 265 Landfill: Cell M-11 (See attached sketch dated 7-15-15)536.8 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 266 Landfill: Cell L-11 (See attached sketch dated 7-15-15)534.2 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 267 Landfill: Cell I-11 (See attached sketch dated 7-22-15)529.0 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 268 Landfill - Shell: Cell J-11 (See attached sketch dated 7-22-15)531.4 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 269 Landfill - Shell: Cell J-11 (See attached sketch dated 7-22-15)532.6 Landfill Shell Troxler 3450 1026D SCAFF, Clyde 270 Landfill - Shell: Cell I-11 (See attached sketch dated 7-22-15)526.9 Landfill Shell Troxler 3450 1026D SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 263 7/15/15 S-24 A F Ash 37.0 67.8 45.5 63.3 12 93 90 264 7/15/15 S-24 A F Ash 37.0 67.8 48.1 61.9 12 91 90 265 7/15/15 S-24 A F Ash 37.0 67.8 44.6 62.7 12 92 90 266 7/15/15 S-24 A F Ash 37.0 67.8 44.8 62.2 12 92 90 267 7/22/15 S-25 F Ash 39.9 67.1 39.8 64.6 12 96 90 268 7/22/15 S-25 F Ash 39.9 67.1 39.9 63.6 12 95 95 269 7/22/15 S-25 F Ash 39.9 67.1 38.8 64.1 12 96 95 270 7/22/15 S-25 F Ash 39.9 67.1 40.7 63.5 12 95 95 Page 3 of 5 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 271 Landfill: Cell J-11 (See attached sketch dated 7-22-15)529.9 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 272 Landfill: Cell J-11 (See attached sketch dated 7-22-15)531.2 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 273 Landfill: Cell K-11 (See attached sketch dated 7-22-15)535.5 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 274 Landfill: Cell K-11 (See attached sketch dated 7-22-15)537.6 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 275 Landfill: Cell L-11 (See attached sketch dated 7-22-15)539.4 Greater than 100 ft. from crest Troxler 3450 1026D SCAFF, Clyde 276 Landfill: Cell L-12 (See attached sketch dated 7-29-15)539.6 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 277 Landfill: Cell M-12 (See attached sketch dated 7-29-15)542.4 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 278 Landfill: Cell M-12 (See attached sketch dated 7-29-15)544.7 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 271 7/22/15 S-25 F Ash 39.9 67.1 41.4 61.6 12 92 90 272 7/22/15 S-25 F Ash 39.9 67.1 35.1 63.7 12 95 90 273 7/22/15 S-25 F Ash 39.9 67.1 33.5 63.9 12 95 90 274 7/22/15 S-25 F Ash 39.9 67.1 35.3 62.4 12 93 90 275 7/22/15 S-25 F Ash 39.9 67.1 35.2 62.9 12 94 90 276 7/29/15 S-24 A F Ash 37.0 67.8 42.3 64.8 12 96 90 277 7/29/15 S-24 A F Ash 37.0 67.8 38.2 64.7 12 95 90 278 7/29/15 S-24 A F Ash 37.0 67.8 43.4 61.4 12 91 90 Page 4 of 5 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 279 Landfill: Cell L-11 (See attached sketch dated 7-29-15)536.4 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 280 Landfill: Cell M-11 (See attached sketch dated 7-29-15)538.6 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 281 Landfill: Cell M-11 (See attached sketch dated 7-29-15)540.7 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 282 Landfill: Cell L-10 (See attached sketch dated 7-29-15)535.1 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 283 Landfill: Cell M-10 (See attached sketch dated 7-29-15)537.1 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 284 Landfill: Cell M-10 (See attached sketch dated 7-29-15)538.9 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 279 7/29/15 S-24 A F Ash 37.0 67.8 39.1 65.9 12 97 90 280 7/29/15 S-24 A F Ash 37.0 67.8 29.6 68.7 12 101 90 281 7/29/15 S-24 A F Ash 37.0 67.8 30.8 68.5 12 101 90 282 7/29/15 S-24 A F Ash 37.0 67.8 35.6 67.7 12 100 90 283 7/29/15 S-24 A F Ash 37.0 67.8 38.9 66.0 12 97 90 284 7/29/15 S-24 A F Ash 37.0 67.8 39.4 65.6 12 97 90 Page 5 of 5 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 7/2/2015 247 992474.557 1982007.072 527.9 7/2/2015 248 992448.871 1981905.835 525.5 7/2/2015 249 992421.536 1981793.186 522.9 7/2/2015 250 992380.313 1982062.498 528.0 7/2/2015 251 992339.946 1981950.771 525.9 7/2/2015 252 992300.307 1981828.942 524.7 7/2/2015 253 992193.487 1982086.992 530.2 7/2/2015 254 992196.639 1981976.700 528.7 7/2/2015 255 992199.855 1981856.147 526.8 7/8/2015 256 992204.030 1981846.048 526.4 7/8/2015 257 992219.246 1981941.325 527.4 7/8/2015 258 992239.493 1982041.481 528.1 7/8/2015 259 992253.820 1982138.595 528.9 7/8/2015 260 99268.249 1982233.913 530.7 7/8/2015 261 992285.284 1982342.304 532.8 7/8/2015 262 992300.054 1982449.023 534.5 7/15/2015 263 992118.250 1982345.811 538.0 7/15/2015 264 992116.354 1982464.909 540.6 7/15/2015 265 992272.196 1982469.251 536.8 7/15/2015 266 992287.199 1982346.054 534.2 7/22/2015 267 992136.408 1981869.685 529.0 7/22/2015 268 992129.470 1981968.657 531.4 7/22/2015 269 992122.193 1982064.926 532.6 7/22/2015 270 992267.091 1981864.476 526.9 7/22/2015 271 992250.774 1981976.107 529.9 7/22/2015 272 992235.845 1982081.246 531.2 7/22/2015 273 992158.093 1982230.079 535.5 7/22/2015 274 992150.313 1982326.828 537.6 7/22/2015 275 992141.558 1982433.582 539.4 7/29/2015 276 992084.361 1982339.926 539.6 7/29/2015 277 992079.245 1982457.085 542.4 7/29/2015 278 992075.248 1982561.250 544.7 7/29/2015 279 992226.210 1982340.618 536.4 7/29/2015 280 992220.461 1982452.780 538.6 7/29/2015 281 992215.176 1982562.158 540.7 7/29/2015 282 992341.374 1982340.220 535.1 7/29/2015 283 992345.486 1982448.898 537.1 7/29/2015 284 992350.146 1982562.198 538.9 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 39.8 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-13 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 2 / 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4781 Roxboro Ash Density Testing Date: 2/6/15 Sample No: S-13 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/5/2015 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5174 5270 5355 5365 5339 Weight of Proctor Mold (g)3955 3955 3955 3955 3955 Weight of Soil in Mold (g)1219 1315 1400 1410 1384 Weight of Soil in Mold (lbs)2.687 2.899 3.086 3.108 3.051 Volume of Mold (cu.ft.).0001 0.0333 0.0333 0.0333 0.0333 0.0333 Wet Unit Weight (pcf)80.7 87.1 92.7 93.3 91.6 Moisture Can No B K U J M Weight of Can 135.13 135.02 134.81 135.14 135.3 Weight of Wet Soil & Can 444.05 476.43 454.21 421.73 482.55 Weight of Dry Soil & Can 370.74 386.41 364.66 335.27 371.44 Weight of Water 73.31 90.02 89.55 86.46 111.11 Weight of Dry Soil 235.61 251.39 229.85 200.13 236.14 Moisture Content (%)31.11%35.81%38.96%43.20%47.05% Dry Unit Weight (pcf)61.6 64.1 66.7 65.2 62.3 Comments: Tony Summers AMRL - N/A 2/6/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 2/6/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-22 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4935 Roxboro Ash Density Testing Date: 5/13/15 Sample No: S-22 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/12/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5450 5538 5620 5617 5609 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1232 1320 1402 1399 1391 Weight of Soil in Mold (lbs)2.716 2.910 3.091 3.084 3.067 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)82.1 87.9 93.4 93.2 92.6 Moisture Can No Q T G X B Weight of Can 135.12 135.04 135.03 134.81 134.88 Weight of Wet Soil & Can 472.47 511.09 699.61 574.44 578.87 Weight of Dry Soil & Can 403.58 425.7 559.92 455.32 448.11 Weight of Water 68.89 85.39 139.69 119.12 130.76 Weight of Dry Soil 268.46 290.66 424.89 320.51 313.23 Moisture Content (%)25.66%29.38%32.88%37.17%41.75% Dry Unit Weight (pcf)65.3 68.0 70.3 67.9 65.4 Comments: Tony Summers AMRL - N/A 5/13/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/13/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-24 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4969 Roxboro Ash Density Testing Date: 6/1/15 Sample No: S-24 Tech: C. Pratt *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/30/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5494 5554 5624 5626 5623 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1276 1336 1406 1408 1405 Weight of Soil in Mold (lbs)2.813 2.945 3.100 3.104 3.097 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.0 89.0 93.6 93.8 93.6 Moisture Can No E I R X B Weight of Can 135.23 135.00 134.86 134.82 134.84 Weight of Wet Soil & Can 573.30 544.44 669.71 551.71 696.85 Weight of Dry Soil & Can 470.89 442.32 521.26 428.68 519.12 Weight of Water 102.41 102.12 148.45 123.03 177.73 Weight of Dry Soil 335.66 307.32 386.4 293.86 384.28 Moisture Content (%)30.51%33.23%38.42%41.87%46.25% Dry Unit Weight (pcf)65.1 66.8 67.7 66.1 64.0 Comments: Tony Summers AMRL - N/A 6/1/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/1/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 39.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-25 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 2 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.306 Project Name: Lab No: 5006 Mayo Ash Density Testing Date: 6/27/15 Sample No: S-7 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 6/26/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5671 5757 5862 5857 5842 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1453 1539 1644 1639 1624 Weight of Soil in Mold (lbs)3.203 3.393 3.624 3.613 3.580 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)96.8 102.5 109.5 109.2 108.2 Moisture Can No A-117 A-10 SR-71 CB JR1 Weight of Can 86.78 87.07 86.63 86.95 87.37 Weight of Wet Soil & Can 869.4 975.76 836.55 919.22 809.9 Weight of Dry Soil & Can 770.52 836.88 699.21 753.6 656.13 Weight of Water 98.88 138.88 137.34 165.62 153.77 Weight of Dry Soil 683.74 749.81 612.58 666.65 568.76 Moisture Content (%)14.46%18.52%22.42%24.84%27.04%Dry Unit Weight (pcf)84.5 86.5 89.4 87.4 85.1 Comments: Tony Summers AMRL - N/A 6/27/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/27/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-27 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 Telephone: Fax: ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 7 / 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5017 Roxboro Ash Density Testing Date: 7/7/15 Sample No: S-27 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/6/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5487 5599 5614 5604 5601 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1269 1381 1396 1386 1383 Weight of Soil in Mold (lbs)2.798 3.045 3.078 3.056 3.049 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)84.5 92.0 93.0 92.3 92.1 Moisture Can No d x t ts jl Weight of Can 135.22 134.84 135.11 87.32 87.06 Weight of Wet Soil & Can 586.41 618.13 600.06 722.46 782.29 Weight of Dry Soil & Can 467.02 479.95 461.88 524.51 557 Weight of Water 119.39 138.18 138.18 197.95 225.29 Weight of Dry Soil 331.8 345.11 326.77 437.19 469.94 Moisture Content (%)35.98%40.04%42.29%45.28%47.94% Dry Unit Weight (pcf)62.2 65.7 65.3 63.5 62.3 Comments: Tony Summers AMRL - N/A 7/7/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/7/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-28 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 7 / 2 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5032 Roxboro Ash Density Testing Date: 7/24/15 Sample No: S-28 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/23/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5436 5478 5579 5598 5582 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1218 1260 1361 1380 1364 Weight of Soil in Mold (lbs)2.685 2.778 3.000 3.042 3.007 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.1 83.9 90.6 91.9 90.8 Moisture Can No N S B M O Weight of Can 134.28 135.23 134.88 135.07 134.78 Weight of Wet Soil & Can 545.59 550.47 581.56 577.66 511.41 Weight of Dry Soil & Can 447.58 444.14 455.34 442.62 388.76 Weight of Water 98.01 106.33 126.22 135.04 122.65 Weight of Dry Soil 313.3 308.91 320.46 307.55 253.98 Moisture Content (%)31.28%34.42%39.39%43.91%48.29% Dry Unit Weight (pcf)61.8 62.4 65.0 63.9 61.3 Comments: Tony Summers AMRL - N/A 7/24/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/24/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.5 Zero Air Voids Curves For Gs = 2 6 - 2 8 41.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-29 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 8 / 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5049 Roxboro Ash Density Testing Date: 7/31/15 Sample No: S-29 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/30/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5476 5570 5627 5634 5623 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1258 1352 1409 1416 1405 Weight of Soil in Mold (lbs)2.773 2.981 3.106 3.122 3.097 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)83.8 90.0 93.8 94.3 93.6 Moisture Can No K X F KC CD Weight of Can 134.81 134.84 134.92 73.79 87.38 Weight of Wet Soil & Can 584.56 646.94 622.26 862.16 853.72 Weight of Dry Soil & Can 473.78 506.52 480.12 619.43 596.79 Weight of Water 110.78 140.42 142.14 242.73 256.93 Weight of Dry Soil 338.97 371.68 345.2 545.64 509.41 Moisture Content (%)32.68%37.78%41.18%44.49%50.44% Dry Unit Weight (pcf)63.1 65.4 66.5 65.3 62.2 Comments: Tony Summers AMRL - N/A 7/31/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/31/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report August 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 47,135.52 0 47,135.52 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 0 0 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 August 2015 Facility Totals 47,135.52 0 47,135.52 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors K-10, K-11, L-10, L-11, M-10, and M-11. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, sixteen (16) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 285 Cell M-11 541.7 293 Cell L-10 539.0 286 Cell M-11 540.5 294 Cell L-11 539.4 287 Cell M-10 538.7 295 Cell L-10 537.9 288 Cell L-11 537.0 296 Cell K-10 537.8 289 Cell L-10 536.1 297 Cell K-11 540.4 290 Cell L-10 535.5 298 Cell M-10 541.4 291 Cell L-11 537.1 299 Cell M-10 542.4 292 Cell L-10 537.5 300 Cell M-11 543.4 * Shell Test Location 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated September 1, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Two (2) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Au g u s t  20 1 5  To n n a g e  Su m m a r y DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 1 1 8 7 . 4 6 0 . 0 0 0 . 0 0 P 6 M 1 0 ,  M1 1 1187.46 2n d   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 3r d   0. 0 0 18 7 9 . 9 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 1879.96 4t h   0. 0 0 18 9 7 . 2 2 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 1897.22 5t h   0. 0 0 21 3 5 . 5 8 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2135.58 6t h   0. 0 0 19 2 7 . 7 2 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 1927.72 7t h   0. 0 0 23 5 7 . 6 0 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2357.60 8t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 9t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 10 t h   0. 0 0 22 9 6 . 4 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2296.46 11 t h   0. 0 0 22 4 1 . 5 0 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2241.50 12 t h   0. 0 0 27 4 6 . 9 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2746.96 13 t h   0. 0 0 24 0 5 . 4 8 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2405.48 14 t h   0. 0 0 16 6 1 . 4 8 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 1661.48 15 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 16 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 17 t h   0. 0 0 27 8 6 . 8 8 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2786.88 18 t h   0. 0 0 23 5 4 . 9 6 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2354.96 19 t h   0. 0 0 21 2 8 . 3 8 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2128.38 20 t h   0. 0 0 22 0 5 . 3 8 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2205.38 21 s t   0. 0 0 23 7 0 . 5 0 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2370.50 22 n d   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 23 r d   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 24 t h   0. 0 0 23 0 1 . 6 6 0. 0 0 0. 0 0 P6 L1 0 ,  L1 1 2301.66 25 t h   0. 0 0 22 6 7 . 2 8 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2267.28 26 t h   0. 0 0 23 8 4 . 5 8 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2384.58 27 t h   0. 0 0 23 4 3 . 5 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 2343.56 28 t h   0. 0 0 15 6 5 . 5 6 0. 0 0 0. 0 0 P6 M1 0 1565.56 29 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 30 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 31 s t   0. 0 0 16 8 9 . 3 6 0. 0 0 0. 0 0 P6 M1 0 ,  M1 1 1689.36 MT D 0. 0 0 47 , 1 3 5 . 5 2 0. 0 0 0. 0 0 YT D 16 0 , 8 9 4 . 5 6 1 2 6 , 6 6 4 . 7 2 24 , 6 4 5 . 0 0 15 1 5 . 0 0 Ro x b o r o  To n n a g e  Su m m a r y   Au g u s t ‐15 La n d f i l l e d 47 , 1 3 5 . 5 2 31 3 , 7 1 9 . 2 8 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com September 1, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES August 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of August 1 through August 31, 2015. During this reporting period, an ESP representative visited the site and performed sixteen (16) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – August 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill September 1, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. Please note that ash material was not placed within the shell area during this reporting period. During this period, ESP obtained two (2) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – August 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill September 1, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (2 sheets) Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – August 2015 (2 sheets) Moisture-Density Relationship (S-18, S-22, S-24, S-30 and S-31) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 285 Landfill: Cell M-11 (See attached sketch dated 8-5-15)541.7 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 286 Landfill: Cell M-11 (See attached sketch dated 8-5-15)540.5 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 287 Landfill: Cell M-10 (See attached sketch dated 8-5-15)538.7 Greater than 100 ft. from crest Troxler 3450 114 SCAFF, Clyde 288 Landfill: Cell L-11 (See attached sketch dated 8-12-15)537.0 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 289 Landfill: Cell L-10 (See attached sketch dated 8-12-15)536.1 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 290 Landfill: Cell L-10 (See attached sketch dated 8-12-15)535.5 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 291 Landfill: Cell L-11 (See attached sketch dated 8-12-15)537.1 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 292 Landfill: Cell L-10 (See attached sketch dated 8-12-15)537.5 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 285 8/5/15 S-24 A F Ash 37.0 67.8 34.5 65.5 12 97 90 286 8/5/15 S-24 A F Ash 37.0 67.8 37.9 64.5 12 95 90 287 8/5/15 S-24 A F Ash 37.0 67.8 37.9 63.8 12 94 90 288 8/12/15 S-18 A F Ash 36.5 70.1 36.8 66.6 12 95 90 289 8/12/15 S-18 A F Ash 36.5 70.1 28.0 71.3 12 102 90 290 8/12/15 S-18 A F Ash 36.5 70.1 41.5 64.7 12 92 90 291 8/12/15 S-18 A F Ash 36.5 70.1 39.7 65.1 12 93 90 292 8/12/15 S-18 A F Ash 36.5 70.1 41.7 64.6 12 92 90 Page 1 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/31/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 293 Landfill: Cell L-10 (See attached sketch dated 8-12-15)539.0 Greater than 100 ft. from crest Troxler 3450 1149 SCAFF, Clyde 294 Landfill: Cell L-11 (See attached sketch dated 8-21-15)539.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 295 Landfill: Cell L-10 (See attached sketch dated 8-21-15)537.9 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 296 Landfill: Cell K-10 (See attached sketch dated 8-21-15)537.8 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 297 Landfill: Cell K-11 (See attached sketch dated 8-21-15)540.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 298 Landfill: Cell M-10 (See attached sketch dated 8-25-15)541.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 299 Landfill: Cell M-10 (See attached sketch dated 8-25-15)542.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 300 Landfill: Cell M-11 (See attached sketch dated 8-25-15)543.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 293 8/12/15 S-18 A F Ash 36.5 70.1 36.4 66.7 12 95 90 294 8/21/15 S-22 A F Ash 33.2 70.3 35.1 66.6 12 95 90 295 8/21/15 S-22 A F Ash 33.2 70.3 35.7 67.8 12 96 90 296 8/21/15 S-22 A F Ash 33.2 70.3 38.2 66.6 12 95 90 297 8/21/15 S-22 A F Ash 33.2 70.3 37.8 65.8 12 94 90 298 8/25/15 S-18 A F Ash 36.5 70.1 30.1 67.6 12 96 90 299 8/25/15 S-18 A F Ash 36.5 70.1 32.4 68.0 12 97 90 300 8/25/15 S-18 A F Ash 36.5 70.1 33.6 67.7 12 97 90 Page 2 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 8/31/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 8/5/2015 285 992187.623 1982518.106 541.7 8/5/2015 286 992301.189 1982519.666 540.5 8/5/2015 287 992423.332 1982516.346 538.7 8/12/2015 288 992255.727 1982315.021 537.0 8/12/2015 289 992368.080 1982300.298 536.1 8/12/2015 290 992461.779 1982287.594 535.5 8/12/2015 291 992454.748 1982396.235 537.1 8/12/2015 292 992362.916 1982396.235 537.5 8/12/2015 293 992261.574 1982423.462 539.0 8/21/2015 294 992433.900 1982477.400 539.4 8/21/2015 295 992463.700 1982356.050 537.9 8/21/2015 296 992321.050 1982333.550 357.8 8/21/2015 297 992300.150 1982454.550 540.4 8/25/2015 298 992454.528 1982532.694 541.4 8/25/2015 299 992333.534 1982523.203 542.4 8/25/2015 300 992235.393 1982513.334 543.4 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 36.5 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-18 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4850 Roxboro Ash Density Testing Date: 3/26/15 Sample No: S-18 Tech: N.Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/25/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5503 5581 5662 5667 5646 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1277 1355 1436 1441 1420 Weight of Soil in Mold (lbs)2.815 2.987 3.166 3.177 3.131 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.1 90.2 95.6 96.0 94.6 Moisture Can No S J P I B Weight of Can 135.18 135.16 134.65 135.06 134.96 Weight of Wet Soil & Can 576.41 542.19 620.48 560.43 581.4 Weight of Dry Soil & Can 478.84 442.09 490.47 444.51 453.1 Weight of Water 97.57 100.1 130.01 115.92 128.3 Weight of Dry Soil 343.66 306.93 355.82 309.45 318.14 Moisture Content (%)28.39%32.61%36.54%37.46%40.33% Dry Unit Weight (pcf)66.2 68.1 70.0 69.8 67.4 Comments: Tony Summers AMRL - N/A 3/26/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/26/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-22 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4935 Roxboro Ash Density Testing Date: 5/13/15 Sample No: S-22 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/12/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5450 5538 5620 5617 5609 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1232 1320 1402 1399 1391 Weight of Soil in Mold (lbs)2.716 2.910 3.091 3.084 3.067 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)82.1 87.9 93.4 93.2 92.6 Moisture Can No Q T G X B Weight of Can 135.12 135.04 135.03 134.81 134.88 Weight of Wet Soil & Can 472.47 511.09 699.61 574.44 578.87 Weight of Dry Soil & Can 403.58 425.7 559.92 455.32 448.11 Weight of Water 68.89 85.39 139.69 119.12 130.76 Weight of Dry Soil 268.46 290.66 424.89 320.51 313.23 Moisture Content (%)25.66%29.38%32.88%37.17%41.75% Dry Unit Weight (pcf)65.3 68.0 70.3 67.9 65.4 Comments: Tony Summers AMRL - N/A 5/13/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/13/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 67.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-24 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 6 / 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4969 Roxboro Ash Density Testing Date: 6/1/15 Sample No: S-24 Tech: C. Pratt *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/30/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5494 5554 5624 5626 5623 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1276 1336 1406 1408 1405 Weight of Soil in Mold (lbs)2.813 2.945 3.100 3.104 3.097 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.0 89.0 93.6 93.8 93.6 Moisture Can No E I R X B Weight of Can 135.23 135.00 134.86 134.82 134.84 Weight of Wet Soil & Can 573.30 544.44 669.71 551.71 696.85 Weight of Dry Soil & Can 470.89 442.32 521.26 428.68 519.12 Weight of Water 102.41 102.12 148.45 123.03 177.73 Weight of Dry Soil 335.66 307.32 386.4 293.86 384.28 Moisture Content (%)30.51%33.23%38.42%41.87%46.25% Dry Unit Weight (pcf)65.1 66.8 67.7 66.1 64.0 Comments: Tony Summers AMRL - N/A 6/1/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 6/1/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 66.5 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.8 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-30 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 8 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5062 Roxboro Ash Density Testing Date: 8/25/15 Sample No: S-30 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 8/24/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5473 5524 5599 5608 5587 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1255 1306 1381 1390 1369 Weight of Soil in Mold (lbs)2.767 2.879 3.045 3.064 3.018 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)83.6 87.0 92.0 92.6 91.2 Moisture Can No R X W T TS Weight of Can 134.85 134.86 134.58 135.19 87.44 Weight of Wet Soil & Can 484.22 580.37 685.33 628.01 778.7 Weight of Dry Soil & Can 402.34 465.12 532.26 482.33 558.82 Weight of Water 81.88 115.25 153.07 145.68 219.88 Weight of Dry Soil 267.49 330.26 397.68 347.14 471.38 Moisture Content (%)30.61%34.90%38.49%41.97%46.65% Dry Unit Weight (pcf)64.0 64.5 66.4 65.2 62.2 Comments: Tony Summers AMRL - N/A 8/25/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 8/25/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 62.0 Zero Air Voids Curves For Gs = 2 6 - 2 8 44.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-31 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 8 / 3 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5083 Roxboro Ash Density Testing Date: 8/29/15 Sample No: S-31 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 8/28/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5426 5474 5570 5557 5552 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1208 1256 1352 1339 1334 Weight of Soil in Mold (lbs)2.663 2.769 2.981 2.952 2.941 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)80.5 83.7 90.0 89.2 88.8 Moisture Can No g w t ts bd Weight of Can 135.07 134.62 135.15 87.51 87.28 Weight of Wet Soil & Can 488.81 630.54 500.03 729.75 1122.94 Weight of Dry Soil & Can 392.86 489.24 385.82 520.33 771.55 Weight of Water 95.95 141.3 114.21 209.42 351.39 Weight of Dry Soil 257.79 354.62 250.67 432.82 684.27 Moisture Content (%)37.22%39.85%45.56%48.39%51.35% Dry Unit Weight (pcf)58.6 59.8 61.9 60.1 58.7 Comments: Tony Summers AMRL - N/A 8/29/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 8/29/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report September 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 17,570.36 0 17,570.36 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 0 0 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 620.00 0 620.00 September 2015 Facility Totals 18,190.36 0 18,190.36 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors L-10, M-10, and M-11. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, twenty (20) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 301 Cell M-10 540.2 311 Cell M-10 542.6 302 Cell M-10 541.5 312 Cell L-10 543.9 303 Cell M-11 540.3 313 Cell M-11 545.3 304 Cell M-11 542.1 314 Cell M-10 544.6 305 Cell M-11 540.6 315 Cell M-10 546.1 306 Cell M-11 542.7 316 Cell M-11 547.7 307 Cell M-10 542.7 317 Cell M-10 543.1 308 Cell M-10 541.6 318 Cell M-10 541.6 309 Cell L-10 540.7 319 Cell M-11 544.6 310 Cell M-10 541.1 320 Cell M-11 546.6 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated October 2, 2015 attached to this report. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Three (3) bulk samples of ash material were collected for laboratory Standard Proctor moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction). One point field test data is provided on pages 13-14 of the ESP compaction report date October 2, 2015 (attached). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n Se p t e m b e r  20 1 5  To n n a g e  Su m m a r y DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l D B A  to  La n d f i l l D e c a n t  Ma t e r i a l To n s To n s To n s To n s Ph a s e Gr i d Total 1s t   0. 0 0 6 4 5 . 2 2 0 . 0 0 2 6 0 . 0 0 P 6 M 1 0 , M 1 1 9 0 5 . 2 2 2n d   0. 0 0 14 8 3 . 6 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1483.60 3r d   0. 0 0 17 3 6 . 4 2 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1736.42 4t h   0. 0 0 13 1 5 . 4 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1315.40 5t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 6t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 7t h   0. 0 0 70 2 . 8 4 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 702.84 8t h   0. 0 0 97 5 . 4 6 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 975.46 9t h   0. 0 0 0. 0 0 0. 0 0 36 0 . 0 0 P6 M1 0 , M 1 1 360.00 10 t h   0. 0 0 13 9 0 . 1 4 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1390.14 11 t h   0. 0 0 17 9 9 . 5 6 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1799.56 12 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 13 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 63 8 0. 0 0 58 5 . 2 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 585.20 15 t h   0. 0 0 37 5 . 3 6 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 375.36 16 t h   0. 0 0 33 8 . 9 6 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 338.96 17 t h   0. 0 0 52 4 . 3 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 524.30 18 t h   0. 0 0 10 3 1 . 0 8 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1031.08 19 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 20 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 21 s t   0. 0 0 26 8 . 5 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 268.50 22 n d   0. 0 0 52 7 . 8 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 527.80 23 r d   0. 0 0 55 8 . 0 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 558.00 24 t h   0. 0 0 73 7 . 6 2 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 737.62 25 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 26 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 27 t h   0. 0 0 0. 0 0 0. 0 0 0. 0 0 N/ A N/ A 0.00 28 t h   0. 0 0 11 8 7 . 3 0 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 1187.30 29 t h   0. 0 0 41 6 . 9 2 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 416.92 30 t h   0. 0 0 97 0 . 6 8 0. 0 0 0. 0 0 P6 M1 0 , M 1 1 970.68 MT D 0. 0 0 17 , 5 7 0 . 3 6 0. 0 0 62 0 . 0 0 YT D 16 0 , 8 9 4 . 5 6 1 4 4 , 2 3 5 . 0 8 24 , 6 4 5 . 0 0 21 3 5 . 0 0 Ro x b o r o  To n n a g e  Su m m a r y   Se p t e m b e r ‐15 La n d f i l l e d 18 , 1 9 0 . 3 6 33 1 , 9 0 9 . 6 4 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com October 2, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES September 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of September 1 through September 30, 2015. During this reporting period, an ESP representative visited the site and performed twenty (20) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – September 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill October 2, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. Please note that ash material was not placed within the shell area during this reporting period. During this period, ESP obtained three (3) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – September 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill October 2, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (3 sheets) Density Test Location Sketches (5 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – September 2015 (2 sheets) Moisture-Density Relationship (S-8, S-18, S-22, S-28 and S-32 through S-34) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 301 Landfill: Cell M-10 (See attached sketch dated 9-1-15)540.2 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 302 Landfill: Cell M-10 (See attached sketch dated 9-1-15)541.5 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 303 Landfill: Cell M-11 (See attached sketch dated 9-1-15)540.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 304 Landfill: Cell M-11 (See attached sketch dated 9-1-15)542.1 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 305 Landfill: Cell M-11 (See attached sketch dated 9-1-15)540.6 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 306 Landfill: Cell M-11 (See attached sketch dated 9-1-15)542.7 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 307 Landfill: Cell M-10 (See attached sketch dated 9-10-15)542.7 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde 308 Landfill: Cell M-10 (See attached sketch dated 9-10-15)541.6 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 301 9/1/15 S-8 F Ash 38.3 65.1 34.9 62.4 12 96 90 302 9/1/15 S-8 F Ash 38.3 65.1 37.7 61.8 12 95 90 303 9/1/15 S-8 F Ash 38.3 65.1 39.7 60.9 12 94 90 304 9/1/15 S-8 F Ash 38.3 65.1 39.5 60.2 12 92 90 305 9/1/15 S-8 F Ash 38.3 65.1 36.8 62.9 12 97 90 306 9/1/15 S-8 F Ash 38.3 65.1 39.2 59.0 12 91 90 307 9/10/15 S-8 F Ash 38.3 65.1 42.5 59.1 12 91 90 308 9/10/15 S-8 F Ash 38.3 65.1 43.5 61.5 12 94 90 Page 1 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 10/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 309 Landfill: Cell L-10 (See attached sketch dated 9-10-15)540.7 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde 310 Landfill: Cell M-10 (See attached sketch dated 9-10-15)541.1 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde 311 Landfill: Cell M-10 (See attached sketch dated 9-10-15)542.6 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde 312 Landfill: Cell L-10 (See attached sketch dated 9-10-15)543.9 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 313 Landfill: Cell M-11 (See attached sketch dated 9-10-15)545.3 Greater than 100 ft. from crest.Troxler 3450 1027 SCAFF, Clyde 314 Landfill: Cell M-10 (See attached sketch dated 9-16-15)Greater than 100 ft. from crest Troxler 3450 596 SCAFF, Clyde 315 Landfill: Cell M-10 (See attached sketch dated 9-16-15)Greater than 100 ft. from crest Troxler 3450 596 SCAFF, Clyde 316 Landfill: Cell M-11 (See attached sketch dated 9-16-15)Greater than 100 ft. from crest Troxler 3450 596 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 309 9/10/15 S-8 F Ash 38.3 65.1 43.6 60.9 12 94 90 310 9/10/15 S-8 F Ash 38.3 65.1 39.6 63.1 12 97 90 311 9/10/15 S-8 F Ash 38.3 65.1 42.8 61.5 12 94 90 312 9/10/15 S-8 F Ash 38.3 65.1 40.3 60.9 12 94 90 313 9/10/15 S-8 F Ash 38.3 65.1 40.1 62.5 12 96 90 314 9/16/15 S-18 F Ash 36.5 70.1 41.6 64.5 12 92 90 315 9/16/15 S-18 F Ash 36.5 70.1 34.9 67.2 12 96 90 316 9/16/15 S-18 F Ash 36.5 70.1 38.3 65.7 12 94 90 Page 2 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 10/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 317 Landfill: Cell M-10 (See attached sketch dated 9-24-15)543.1 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 318 Landfill: Cell M-10 (See attached sketch dated 9-24-15)541.6 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 319 Landfill: Cell M-11 (See attached sketch dated 9-30-15)544.6 Greater than 100 ft. from shell Troxler 3450 1027 SCAFF, Clyde 320 Landfill: Cell M-11 (See attached sketch dated 9-30-15)546.6 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 317 9/24/15 S-22 F Ash 33.2 70.3 45.8 63.9 12 91 90 318 9/24/15 S-22 F Ash 33.2 70.3 42.8 64.0 12 91 90 319 9/30/15 S-28 F Ash 40.2 65.1 43.9 61.8 12 95 90 320 9/30/15 S-28 F Ash 40.2 65.1 45.0 61.8 12 95 90 Page 3 of 3 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 10/2/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 9/1/2015 301 992430.850 1982403.547 540.2 9/1/2015 302 992415.907 1982505.439 541.5 9/1/2015 303 992344.075 1982389.640 540.3 9/1/2015 304 992324.352 1982486.505 542.1 9/1/2015 305 992260.071 1982374.725 540.6 9/1/2015 306 992249.784 1982471.312 542.7 9/10/2015 307 992467.30 1982535.10 542.7 9/10/2015 308 992472.95 1982444.95 541.6 9/10/2015 309 992480.20 1982353.65 540.7 9/10/2015 310 992370.30 1982343.70 541.1 9/10/2015 311 992362.90 1982438.30 542.6 9/10/2015 312 992359.20 1982531.15 543.9 9/10/2015 313 992248.60 1982534.00 545.3 9/16/2015 314 992445.85 1982557.35 544.6 9/16/2015 315 992313.70 1982557.55 546.1 9/16/2015 316 992182.55 1982558.95 547.7 9/24/2015 317 992441.25 1982449.90 543.1 9/24/2015 318 992447.40 1982339.10 541.6 9/30/2015 319 992256.221 1982426.127 544.6 9/30/2015 320 992233.068 1982521.913 546.6 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.3 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-8 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 3 0 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4730 Roxboro Ash Density Testing Date: 12/19/14 Sample No: S-8 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/19/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5363 5416 5461 5500 5562 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1147 1201 1246 1285 1347 Weight of Soil in Mold (lbs)2.529 2.648 2.747 2.833 2.970 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)76.2 79.8 82.7 85.3 89.4 Moisture Can No J R S M G Weight of Can 135.12 134.8 135.40 135.6 135.28 Weight of Wet Soil & Can 526.49 610.67 574.08 496.28 501.66 Weight of Dry Soil & Can 450.24 506.83 470.37 405.59 401.54 Weight of Water 76.25 103.84 103.71 90.69 100.12 Weight of Dry Soil 315.12 372.03 334.97 269.99 266.26 Moisture Content (%)24.20%27.91%30.96%33.59%37.60% Dry Unit Weight (pcf)61.3 62.3 63.2 63.9 65.0 Comments: Tony Summers AMRL - N/A 12/19/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/19/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 36.5 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-18 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4850 Roxboro Ash Density Testing Date: 3/26/15 Sample No: S-18 Tech: N.Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/25/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5503 5581 5662 5667 5646 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1277 1355 1436 1441 1420 Weight of Soil in Mold (lbs)2.815 2.987 3.166 3.177 3.131 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.1 90.2 95.6 96.0 94.6 Moisture Can No S J P I B Weight of Can 135.18 135.16 134.65 135.06 134.96 Weight of Wet Soil & Can 576.41 542.19 620.48 560.43 581.4 Weight of Dry Soil & Can 478.84 442.09 490.47 444.51 453.1 Weight of Water 97.57 100.1 130.01 115.92 128.3 Weight of Dry Soil 343.66 306.93 355.82 309.45 318.14 Moisture Content (%)28.39%32.61%36.54%37.46%40.33% Dry Unit Weight (pcf)66.2 68.1 70.0 69.8 67.4 Comments: Tony Summers AMRL - N/A 3/26/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/26/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-22 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4935 Roxboro Ash Density Testing Date: 5/13/15 Sample No: S-22 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/12/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5450 5538 5620 5617 5609 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1232 1320 1402 1399 1391 Weight of Soil in Mold (lbs)2.716 2.910 3.091 3.084 3.067 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)82.1 87.9 93.4 93.2 92.6 Moisture Can No Q T G X B Weight of Can 135.12 135.04 135.03 134.81 134.88 Weight of Wet Soil & Can 472.47 511.09 699.61 574.44 578.87 Weight of Dry Soil & Can 403.58 425.7 559.92 455.32 448.11 Weight of Water 68.89 85.39 139.69 119.12 130.76 Weight of Dry Soil 268.46 290.66 424.89 320.51 313.23 Moisture Content (%)25.66%29.38%32.88%37.17%41.75% Dry Unit Weight (pcf)65.3 68.0 70.3 67.9 65.4 Comments: Tony Summers AMRL - N/A 5/13/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/13/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-28 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 7 / 2 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5032 Roxboro Ash Density Testing Date: 7/24/15 Sample No: S-28 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/23/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5436 5478 5579 5598 5582 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1218 1260 1361 1380 1364 Weight of Soil in Mold (lbs)2.685 2.778 3.000 3.042 3.007 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.1 83.9 90.6 91.9 90.8 Moisture Can No N S B M O Weight of Can 134.28 135.23 134.88 135.07 134.78 Weight of Wet Soil & Can 545.59 550.47 581.56 577.66 511.41 Weight of Dry Soil & Can 447.58 444.14 455.34 442.62 388.76 Weight of Water 98.01 106.33 126.22 135.04 122.65 Weight of Dry Soil 313.3 308.91 320.46 307.55 253.98 Moisture Content (%)31.28%34.42%39.39%43.91%48.29% Dry Unit Weight (pcf)61.8 62.4 65.0 63.9 61.3 Comments: Tony Summers AMRL - N/A 7/24/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/24/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position v v55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 63.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-32 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 9 / 1 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5113 Roxboro Ash Density Testing Date: 9/17/15 Sample No: S-32 Tech: Nick Sitaras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 9/16/2015 N. Sitaras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5448 5485 5569 5550 5443 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1230 1267 1351 1332 1225 Weight of Soil in Mold (lbs)2.712 2.793 2.978 2.937 2.701 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.9 84.4 90.0 88.7 81.6 Moisture Can No G B F S M Weight of Can 135.08 134.94 134.96 135.20 135.11 Weight of Wet Soil & Can 465.74 442.13 510.73 422.75 543.69 Weight of Dry Soil & Can 378.38 359.92 399.85 334.1 409.70 Weight of Water 87.36 82.21 110.88 88.65 133.99 Weight of Dry Soil 243.3 224.98 264.89 198.9 274.59 Moisture Content (%)35.91%36.54%41.86%44.57%48.80% Dry Unit Weight (pcf)60.3 61.8 63.4 61.4 54.8 Comments: Tony Summers AMRL - N/A 9/17/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 9/17/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.9 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.5 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-33 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 9 / 2 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5136 Roxboro Ash Density Testing Date: 9/27/15 Sample No: S-33 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 9/27/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5474 5570 5645 5654 5640 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1256 1352 1427 1436 1422 Weight of Soil in Mold (lbs)2.769 2.981 3.146 3.166 3.135 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)83.7 90.0 95.0 95.6 94.7 Moisture Can No J KC TS BD W Weight of Can 135.11 87.76 87.32 87.38 134.67 Weight of Wet Soil & Can 451.65 542.77 963.65 907.88 629.52 Weight of Dry Soil & Can 380.26 426.81 721.81 658.74 469.56 Weight of Water 71.39 115.96 241.84 249.14 159.96 Weight of Dry Soil 245.15 339.05 634.49 571.36 334.89 Moisture Content (%)29.12%34.20%38.12%43.60%47.76% Dry Unit Weight (pcf)64.8 67.1 68.8 66.6 64.1 Comments: Tony Summers AMRL - N/A 9/28/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 9/28/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 69.0 Zero Air Voids Curves For Gs = 2 6 - 2 8 37.1 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-34 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 9 / 2 9 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5137 Roxboro Ash Density Testing Date: 9/27/15 Sample No: S-34 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 9/27/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5488 5575 5641 5622 5624 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1270 1357 1423 1404 1406 Weight of Soil in Mold (lbs)2.800 2.992 3.137 3.095 3.100 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)84.6 90.4 94.8 93.5 93.6 Moisture Can No S CE JL R A-117 Weight of Can 135.21 87.74 87.09 134.87 86.85 Weight of Wet Soil & Can 405.80 468.42 771.44 664.57 814.59 Weight of Dry Soil & Can 343.7 371.67 584.62 512.22 592.05 Weight of Water 62.1 96.75 186.82 152.35 222.54 Weight of Dry Soil 208.49 283.93 497.53 377.35 505.2 Moisture Content (%)29.79%34.08%37.55%40.37%44.05% Dry Unit Weight (pcf)65.2 67.4 68.9 66.6 65.0 Comments: Tony Summers AMRL - N/A 9/28/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 9/28/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report October 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 13,160.38 0 13,160.38 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 5,995.00 0 5,995.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 520.00 0 520,00 October 2015 Facility Totals 19,675.38 0 19,675.38 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors J-10, K-10, M-10, and M-11. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, thirteen (13) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 321 Cell M-10 546.3 328 Cell J-10 530.6 322 Cell M-10 547.3 329 Cell M-10 546.2 323 Cell M-11 548.3 330 Cell J-10 544.2 324 Cell K-10 531.3 331 Cell J-10 532.0 325 Cell J-10 529.5 332 Cell J-10 532.2 326 Cell M-10 544.3 333 Cell M-11 546.8 327 Cell M-10 542.8 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated November 3, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. Two (2) bulk samples of ash material were collected for laboratory Standard Proctor 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 moisture-density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction) One point field test data is provided on page 10 of the ESP compaction report date November 3, 2015 (attached). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l De c a n t  Ma t e r i a l To n s To n s To n s Dis p o s a l  / Re u s e To n s Ph a s e Grid Total 1s t   0. 0 0 1 6 0 1 . 9 2 0 . 0 0 N / A 0 . 0 0 P 6 J 1 0 1 6 0 1 . 9 2 2n d   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 3r d   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 4t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 5t h   0. 0 0 22 5 . 3 6 0. 0 0 N/ A 0. 0 0 P6 J10 225.36 6t h   0. 0 0 11 7 8 . 0 2 0. 0 0 N/ A 0. 0 0 P6 J10 1178.02 7t h   0. 0 0 70 7 . 7 6 0. 0 0 N/ A 0. 0 0 P6 J10 707.76 8t h   0. 0 0 22 7 . 6 0 0. 0 0 N/ A 0. 0 0 P6 J10 227.60 9t h   0. 0 0 40 0 . 8 6 0. 0 0 N/ A 0. 0 0 P6 J10 400.86 10 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 11 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 12 t h   0. 0 0 10 7 0 . 4 0 0. 0 0 N/ A 0. 0 0 P6 M10 1070.40 13 t h   0. 0 0 10 1 9 . 2 8 0. 0 0 N/ A 52 0 . 0 0 P6 J10 1539.28 14 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 15 t h   0. 0 0 11 5 3 . 7 8 0. 0 0 N/ A 0. 0 0 P6 J10 1153.78 16 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 17 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 18 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 19 t h   0. 0 0 10 2 6 . 0 2 67 5 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1701.02 20 t h   0. 0 0 65 2 . 2 2 13 0 0 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1952.22 21 s t   0. 0 0 0. 0 0 14 8 5 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1485.00 22 n d   0. 0 0 11 1 2 . 6 2 48 0 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1592.62 23 r d   0. 0 0 0. 0 0 87 5 . 0 0 Di s p o s a l 0. 0 0 P6 J10 875.00 24 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 25 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 26 t h   0. 0 0 75 5 . 8 4 40 0 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1155.84 27 t h   0. 0 0 87 6 . 9 4 38 0 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1256.94 28 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 29 t h   0. 0 0 11 5 1 . 7 6 40 0 . 0 0 Di s p o s a l 0. 0 0 P6 J10 1551.76 30 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 31 s t   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/A 0.00 MT D 0. 0 0 13 , 1 6 0 . 3 8 52 0 . 0 0 YT D 16 0 , 8 9 4 . 5 6 1 5 7 , 3 9 5 . 4 6 26 5 5 . 0 0 35 1 , 5 8 5 . 0 2 Ro x b o r o  To n n a g e  Su m m a r y   Oc t o b e r ‐15 La n d f i l l e d 19 , 6 7 5 . 3 8 DB A  to  La n d f i l l 5, 9 9 5 . 0 0 30 , 6 4 0 . 0 0 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com November 3, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES October 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of October 1 through October 31, 2015. During this reporting period, an ESP representative visited the site and performed thirteen (13) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – October 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill November 3, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. Please note that ash material was not placed within the shell area during this reporting period. During this period, ESP obtained two (2) bulk samples of ash material and transported them to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationships performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (2 sheets) Density Test Location Sketches (4 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – October 2015 (2 sheets) Moisture-Density Relationship (S-2, S-18, S-27, S-35 and S-36) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 321 Landfill: Cell M-10 (See attached sketch dated 10-8-15)546.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 322 Landfill: Cell M-10 (See attached sketch dated 10-8-15)547.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 323 Landfill: Cell M-11 (See attached sketch dated 10-8-15)548.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 324 Landfill: Cell K-10 (See attached sketch dated 10-8-15)531.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 325 Landfill: Cell J-10 (See attached sketch dated 10-8-15)529.5 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 326 Landfill: Cell M-10 (See attached sketch dated 10-14-15)544.3 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 327 Landfill: Cell M-10 (See attached sketch dated 10-14-15)542.8 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 328 Landfill: Cell J-10 (See attached sketch dated 10-14-15)530.6 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 321 10/8/15 S-27 A F Ash 40.7 65.8 37.4 64.3 12 98 90 322 10/8/15 S-27 A F Ash 40.7 65.8 35.4 63.9 12 97 90 323 10/8/15 S-27 A F Ash 40.7 65.8 36.1 63.2 12 96 90 324 10/8/15 S-27 A F Ash 40.7 65.8 35.0 63.6 12 97 90 325 10/8/15 S-27 A F Ash 40.7 65.8 33.9 63.5 12 97 90 326 10/14/15 S-18 A F Ash 36.5 70.1 40.1 63.9 12 91 90 327 10/14/15 S-18 A F Ash 36.5 70.1 38.8 65.9 12 94 90 328 10/14/15 S-18 A F Ash 36.5 70.1 31.2 69.1 12 99 90 Page 1 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 11/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 329 Landfill: Cell M-10 (See attached sketch dated 10-23-15)546.2 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 330 Landfill: Cell M-10 (See attached sketch dated 10-23-15)544.2 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 331 Landfill: Cell J-10 (See attached sketch dated 10-23-15)532.0 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 332 Landfill: Cell J-10 (See attached sketch dated 10-23-15)532.2 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 333 Landfill: Cell M-11 (See attached sketch dated 10-30-15)546.8 Greater than 100 ft. from crest. Troxler 3450 1027 ROBERTS, JOSHUA Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 329 10/23/15 S-35 F Ash 34.7 70.1 40.9 63.2 12 90 90 330 10/23/15 S-35 F Ash 34.7 70.1 39.1 63.7 12 91 90 331 10/23/15 S-35 F Ash 34.7 70.1 34.3 66.9 12 95 90 332 10/23/15 S-35 F Ash 34.7 70.1 38.5 64.8 12 92 90 333 10/30/15 S-2 A F Ash 38.2 66.7 40.6 66.1 12 99 90 Page 2 of 2 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 11/3/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 10/8/2015 321 992474.037 1982576.484 546.3 10/8/2015 322 992364.472 1982566.932 547.3 10/8/2015 323 992253.033 1982559.217 548.3 10/8/2015 324 992465.553 1982059.431 531.3 10/8/2015 325 992481.310 1981948.497 529.5 10/14/2015 326 992520.90 1982485.15 544.3 10/14/2015 327 992535.30 1982364.45 542.8 10/14/2015 328 992475.95 1981931.25 530.6 10/23/2015 329 992313.75 1982451.55 546.2 10/23/2015 330 992348.45 1982340.40 544.2 10/23/2015 331 992460.50 1982031.50 532.0 10/23/2015 332 992483.30 1981940.80 532.2 10/30/2015 333 992230.233 1982469.017 546.8 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On-site Material Description TEST RESULTS 66.7 Zero Air Voids Curves For Gs = 2 6 - 2 8 38.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-2 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 1 / 1 5 / 1 4 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4683 Roxboro Ash Density Testing Date: 11/7/14 Sample No: S-2 Tech: T. Summers *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2014 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2014 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 11/5/2014 T. Summers Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5432 5513 5585 5599 5607 Weight of Proctor Mold (g)4215 4215 4215 4215 4215 Weight of Soil in Mold (g)1217 1298 1370 1384 1392 Weight of Soil in Mold (lbs)2.683 2.862 3.020 3.051 3.069 Volume of Mold (cu.ft.).0001 0.0332 0.0332 0.0332 0.0332 0.0332 Wet Unit Weight (pcf)80.8 86.2 91.0 91.9 92.4 Moisture Can No X Q B N K Weight of Can 134.08 135.1 135.46 134.91 135.31 Weight of Wet Soil & Can 576.96 579.97 532.44 683.89 569.98 Weight of Dry Soil & Can 476.82 470.23 425.36 532.27 439.66 Weight of Water 100.14 109.74 107.08 151.62 130.32 Weight of Dry Soil 342.74 335.13 289.9 397.36 304.35 Moisture Content (%)29.22%32.75%36.94%38.16%42.82% Dry Unit Weight (pcf)62.5 64.9 66.4 66.5 64.7 Comments: Tony Summers AMRL - N/A 11/7/2014 Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 11/7/2014 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2014 1/16/2014 9/30/2014 7A-21/30/2014 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 36.5 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-18 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 2 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4850 Roxboro Ash Density Testing Date: 3/26/15 Sample No: S-18 Tech: N.Sitras *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 3/25/2015 N. Sitras Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5503 5581 5662 5667 5646 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1277 1355 1436 1441 1420 Weight of Soil in Mold (lbs)2.815 2.987 3.166 3.177 3.131 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.1 90.2 95.6 96.0 94.6 Moisture Can No S J P I B Weight of Can 135.18 135.16 134.65 135.06 134.96 Weight of Wet Soil & Can 576.41 542.19 620.48 560.43 581.4 Weight of Dry Soil & Can 478.84 442.09 490.47 444.51 453.1 Weight of Water 97.57 100.1 130.01 115.92 128.3 Weight of Dry Soil 343.66 306.93 355.82 309.45 318.14 Moisture Content (%)28.39%32.61%36.54%37.46%40.33% Dry Unit Weight (pcf)66.2 68.1 70.0 69.8 67.4 Comments: Tony Summers AMRL - N/A 3/26/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/26/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-27 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 Telephone: Fax: ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 7 / 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5017 Roxboro Ash Density Testing Date: 7/7/15 Sample No: S-27 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/6/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5487 5599 5614 5604 5601 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1269 1381 1396 1386 1383 Weight of Soil in Mold (lbs)2.798 3.045 3.078 3.056 3.049 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)84.5 92.0 93.0 92.3 92.1 Moisture Can No d x t ts jl Weight of Can 135.22 134.84 135.11 87.32 87.06 Weight of Wet Soil & Can 586.41 618.13 600.06 722.46 782.29 Weight of Dry Soil & Can 467.02 479.95 461.88 524.51 557 Weight of Water 119.39 138.18 138.18 197.95 225.29 Weight of Dry Soil 331.8 345.11 326.77 437.19 469.94 Moisture Content (%)35.98%40.04%42.29%45.28%47.94% Dry Unit Weight (pcf)62.2 65.7 65.3 63.5 62.3 Comments: Tony Summers AMRL - N/A 7/7/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/7/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.7 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-35 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 0 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5149 Roxboro Ash Density Testing Date: 10/10/15 Sample No: S-35 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 10/10/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5518 5575 5621 5647 5615 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1300 1357 1403 1429 1397 Weight of Soil in Mold (lbs)2.866 2.992 3.093 3.150 3.080 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)86.6 90.4 93.4 95.2 93.0 Moisture Can No E B K L J Weight of Can 135.15 135.11 134.83 134.78 135.16 Weight of Wet Soil & Can 571.28 675.87 654.98 687.29 647.39 Weight of Dry Soil & Can 477.91 548.36 524.16 536.68 498.47 Weight of Water 93.37 127.51 130.82 150.61 148.92 Weight of Dry Soil 342.76 413.25 389.33 401.9 363.31 Moisture Content (%)27.24%30.86%33.60%37.47%40.99% Dry Unit Weight (pcf)68.0 69.1 69.9 69.2 66.0 Comments: Tony Summers AMRL - N/A 10/10/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 10/10/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2015 7A-21/30/2015 Position >> 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 62.5 Zero Air Voids Curves For Gs = 2 6 - 2 8 46.4 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-36 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 0 / 2 8 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5777 Roxboro Ash Density Testing Date: 10/28/15 Sample No: S-36 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 10/27/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5418 5517 5595 5577 5569 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1200 1299 1377 1359 1351 Weight of Soil in Mold (lbs)2.646 2.864 3.036 2.996 2.978 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)79.9 86.5 91.7 90.5 90.0 Moisture Can No L I E B K Weight of Can 134.86 134.95 135.13 134.98 134.84 Weight of Wet Soil & Can 462.87 490.05 591.06 580.07 565.29 Weight of Dry Soil & Can 375.31 384.98 445.55 428.34 411.25 Weight of Water 87.56 105.07 145.51 151.73 154.04 Weight of Dry Soil 240.45 250.03 310.42 293.36 276.41 Moisture Content (%)36.42%42.02%46.88%51.72%55.73% Dry Unit Weight (pcf)58.6 60.9 62.4 59.7 57.8 Comments: Tony Summers AMRL - N/A 10/28/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 10/28/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2015 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report November 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 8,294.54 0 8,294.54 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 6,595.00 0 6,595.00 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 0 0 0 November 2015 Facility Totals 14,889.54 0 14,889.54 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the Industrial landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sectors L-10, M-10, and M-11. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, five (5) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 334 Cell M-10 549.0 337 Cell L-10 545.2 335 Cell M-11 548.0 338 Cell M-11 543.4 336 Cell L-10 545.5 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated December 1, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. One (1) bulk sample of ash material was collected for laboratory Standard Proctor moisture- density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction) One point field test data is provided on pages 9-11 of the ESP compaction report dated December 1, 2015 (attached). Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n No v e m b e r  20 1 5  To n n a g e  Su m m a r y DF A  to  La n d f i l l D F A  to  P6  La n d f i l l De c a n t  Ma t e r i a l To n s To n s To n s Dis p o s a l  / Re u s e To n s Ph a s e Gr i d Total 1s t   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 2n d   0. 0 0 0 . 0 0 5 0 0 . 0 0 D i s p o s a l 0 . 0 0 P 6 J 1 0 5 0 0 . 0 0 3r d   0. 0 0 3 8 4 . 0 2 5 1 0 . 0 0 D i s p o s a l 0 . 0 0 P 6 J 1 0 8 9 4 . 0 2 4t h   0. 0 0 0 . 0 0 1 2 5 0 . 0 0 Di s p o s a l 0. 0 0 P6 N1 0 , N 1 1 1250.0 0 5t h   0. 0 0 1 1 2 2 . 9 8 5 7 5 . 0 0 D i s p o s a l 0 . 0 0 P 6 N 1 0 , N 1 1 1 6 9 7 . 9 8 6t h   0. 0 0 0 . 0 0 1 0 0 0 . 0 0 Di s p o s a l 0. 0 0 P6 N1 0 , N 1 1 1000.0 0 7t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 8t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 9t h   0. 0 0 6 4 4 . 5 6 2 8 0 . 0 0 D i s p o s a l 0 . 0 0 P 6 N 1 0 , N 1 1 9 2 4 . 5 6 10 t h   0. 0 0 0 . 0 0 7 2 5 . 0 0 D i s p o s a l 0 . 0 0 P 6 N 1 0 , N 1 1 7 2 5 . 0 0 11 t h   0. 0 0 1 4 7 9 . 3 4 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 1479.3 4 12 t h   0. 0 0 60 9 . 1 8 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 609.18 13 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 14 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 15 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 16 t h   0. 0 0 61 7 . 4 8 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 617.48 17 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 18 t h   0. 0 0 10 0 1 . 2 4 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 1001.2 4 19 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 20 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 21 s t   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 22 n d   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 23 r d   0. 0 0 11 8 9 . 0 6 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 1189.06 24 t h   0. 0 0 0. 0 0 17 5 5 . 0 0 Di s p o s a l 0. 0 0 P6 N1 0 , N 1 1 1755.0 0 25 t h   0. 0 0 12 4 6 . 6 8 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 1246.68 26 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 27 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 28 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 29 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 30 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 MT D 0. 0 0 8, 2 9 4 . 5 4 0. 0 0 YT D 16 0 , 8 9 4 . 5 6 1 6 5 , 6 9 0 . 0 0 26 5 5 . 0 0 37 , 2 3 5 . 0 0 36 6 , 4 7 4 . 5 6 Ro x b o r o  To n n a g e  Su m m a r y   No v e m b e r ‐15 DB A  to  La n d f i l l La n d f i l l e d 6, 5 9 5 . 0 0 14 , 8 8 9 . 5 4 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com December 1, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES November 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of November 1 through November 30, 2015. During this reporting period, an ESP representative visited the site and performed five (5) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – November 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill December 1, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior. Please note that ash material was not placed within the shell area during this reporting period. In addition, no tests were requested the week of November 16 as reportedly three units were offline at the time. During this period, ESP obtained one (1) bulk sample of ash material and transported it to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationship test performed on the ash material and/or used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – November 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill December 1, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (1 sheet) Density Test Location Sketches (3 sheets) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plots – November 2015 (3 sheets) Moisture-Density Relationship (S-15, S-22, S-28 and S-37) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 334 Landfill: Cell M-10 (See attached sketch dated 11-5-15)549.0 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 335 Landfill: Cell M-11 (See attached sketch dated 11-5-15)548.0 Greater than 100 ft. from crest Troxler 3450 1027 ROBERTS, JOSHUA 336 Landfill: Cell L-10 (See attached sketch dated 11-11-15)545.5 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 337 Landfill: Cell L-10 (See attached sketch dated 11-11-15)545.2 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde 338 Landfill: Cell M-11 (See attached sketch dated 11-24-15)543.4 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter".Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 334 11/5/15 S-22 A F Ash 33.2 70.3 36.2 70.1 12 100 90 335 11/5/15 S-22 A F Ash 33.2 70.3 38.8 72.7 12 103 90 336 11/11/15 S-28 F Ash 40.2 65.1 41.0 66.2 12 102 90 337 11/11/15 S-28 F Ash 40.2 65.1 41.8 64.5 12 99 90 338 11/24/15 S-15 A F Ash 34.9 68.8 46.0 64.1 12 93 90 Page 1 of 1 Nuclear Density Test Report Test Method: ASTM D6938 Report Date: 11/30/2015 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate BoulevardSuite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 11/5/2015 334 992296.847 1982569.977 549.0 11/5/2015 335 992417.912 1982573.386 548.0 11/11/2015 336 992389.986 1982431.136 545.5 11/11/2015 337 992495.806 1982432.779 545.2 11/24/2015 338 992225.400 1982638.050 543.4 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 68.8 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-15 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 3 / 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4826 Roxboro Ash Density Testing Date: 3/2/15 Sample No: S-15 Tech: M. Oreste *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 2/28/2015 M. Oreste Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5544 5598 5620 5629 5593 Weight of Proctor Mold (g)4226 4226 4226 4226 4226 Weight of Soil in Mold (g)1318 1372 1394 1403 1367 Weight of Soil in Mold (lbs)2.906 3.025 3.073 3.093 3.014 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)87.8 91.4 92.8 93.4 91.0 Moisture Can No W U K G S Weight of Can 85.82 134.82 134.90 135.17 135.31 Weight of Wet Soil & Can 506.03 661.26 662.23 608.14 590.46 Weight of Dry Soil & Can 409.88 530.22 525.75 474.23 453.33 Weight of Water 96.15 131.04 136.48 133.91 137.13 Weight of Dry Soil 324.06 395.4 390.85 339.06 318.02 Moisture Content (%)29.67%33.14%34.92%39.49%43.12% Dry Unit Weight (pcf)67.7 68.6 68.8 67.0 63.6 Comments: Tony Summers AMRL - N/A 3/2/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 3/2/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.3 Zero Air Voids Curves For Gs = 2 6 - 2 8 33.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-22 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 5 / 1 3 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 4935 Roxboro Ash Density Testing Date: 5/13/15 Sample No: S-22 Tech: C. Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 5/12/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5450 5538 5620 5617 5609 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1232 1320 1402 1399 1391 Weight of Soil in Mold (lbs)2.716 2.910 3.091 3.084 3.067 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)82.1 87.9 93.4 93.2 92.6 Moisture Can No Q T G X B Weight of Can 135.12 135.04 135.03 134.81 134.88 Weight of Wet Soil & Can 472.47 511.09 699.61 574.44 578.87 Weight of Dry Soil & Can 403.58 425.7 559.92 455.32 448.11 Weight of Water 68.89 85.39 139.69 119.12 130.76 Weight of Dry Soil 268.46 290.66 424.89 320.51 313.23 Moisture Content (%)25.66%29.38%32.88%37.17%41.75% Dry Unit Weight (pcf)65.3 68.0 70.3 67.9 65.4 Comments: Tony Summers AMRL - N/A 5/13/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 5/13/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 65.1 Zero Air Voids Curves For Gs = 2 6 - 2 8 40.2 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-28 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 7 / 2 7 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5032 Roxboro Ash Density Testing Date: 7/24/15 Sample No: S-28 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2014 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 7/23/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5436 5478 5579 5598 5582 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1218 1260 1361 1380 1364 Weight of Soil in Mold (lbs)2.685 2.778 3.000 3.042 3.007 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)81.1 83.9 90.6 91.9 90.8 Moisture Can No N S B M O Weight of Can 134.28 135.23 134.88 135.07 134.78 Weight of Wet Soil & Can 545.59 550.47 581.56 577.66 511.41 Weight of Dry Soil & Can 447.58 444.14 455.34 442.62 388.76 Weight of Water 98.01 106.33 126.22 135.04 122.65 Weight of Dry Soil 313.3 308.91 320.46 307.55 253.98 Moisture Content (%)31.28%34.42%39.39%43.91%48.29% Dry Unit Weight (pcf)61.8 62.4 65.0 63.9 61.3 Comments: Tony Summers AMRL - N/A 7/24/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 7/24/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2014 7A-21/30/2015 Position 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 72.5 Zero Air Voids Curves For Gs = 2 6 - 2 8 34.0 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-37 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 1 / 1 1 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5791 Roxboro Ash Density Testing Date: 11/11/15 Sample No: S-37 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 11/10/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5500 5574 5675 5666 5670 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1282 1356 1457 1448 1452 Weight of Soil in Mold (lbs)2.826 2.989 3.212 3.192 3.201 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.4 90.3 97.0 96.4 96.7 Moisture Can No G J R P N Weight of Can 135.08 135.14 134.82 134.66 134.32 Weight of Wet Soil & Can 454.50 627.94 766.71 553.3 696.49 Weight of Dry Soil & Can 389.03 514.83 606.67 436.94 525.79 Weight of Water 65.47 113.11 160.04 116.36 170.7 Weight of Dry Soil 253.95 379.69 471.85 302.28 391.47 Moisture Content (%)25.78%29.79%33.92%38.49%43.60% Dry Unit Weight (pcf)67.9 69.6 72.5 69.6 67.3 Comments: Tony Summers AMRL - N/A 11/11/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 11/11/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2015 7A-21/30/2015 Position 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Monthly Activity Report December 2015 Roxboro Steam Station Landfill Operations Landfill operations at Roxboro Steam Station have been concentrated with waste placement in the Industrial Landfill, Phase 6 for this reporting period. Please reference the attached tonnage tracking spreadsheet for daily tonnage placement and materials accepted. A brief snapshot of waste placement activities include: Waste Material Accepted Industrial Landfill – Phase 6 Industrial Landfill – Phase 4/5 Extension Fly Ash (FA) 6,322.72 0 6,322.72 Gypsum 0 0 0 WWTS (Waste Cake) 0 0 0 Dry Bottom Ash (DBA) 0 0 0 Fly Ash from Mayo* 0 0 0 Bottom Ash from Mayo* 0 0 0 Other Materials** 360.00 0 360.00 December 2015 Facility Totals 6,682.72 0 6,682.72 * Material from Mayo is no longer being placed in the Roxboro ILF **Other materials included Decant waste for this reporting period Compaction testing was performed on waste placed within the Industrial landfill facility at the Roxboro Steam Station (RSS) as required. Testing is required at an interval of 1 test per 100 feet on center on a weekly basis at the RSS Industrial Landfill. The outer shell of the landfill unit is measured at 100 feet off the outside top of slope and the ash material placed within the landfill shell is required to meet 95% of the Standard Proctor. The interior ash material is required to be compacted to meet a minimum of 90% of the Standard Proctor and may be tested at a spacing of approximately 150 feet on center. The working area for this period was defined as grid sector N-10. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Based upon the working area defined for this period, two (2) field density tests were performed on materials placed in the Industrial Landfill. Northing and Easting coordinates for each test site are provided in the attached compaction test report. Tests were completed at elevations as presented below: Test ID Location Elevation Test ID Location Elevation 339* Cell N-10 544.5 340 Cell N-10 542.7 * Shell Test Location All tests confirmed the compaction requirement of at least 90% of the materials Standard Proctor maximum dry density with moisture content of +/- 5% of the materials optimum moisture content or higher as required by the PTO conditions. Reference the compaction report from ESP for further details, dated December 31, 2015 attached to this report. Proctors are required to be tested 1 per 25,000 cubic yards (or tons)1 for the landfill facility at RSS. One (1) bulk sample of ash material was collected for laboratory Standard Proctor moisture- density relationship testing (ASTM D698) for this period thus meeting the PTO requirements. In addition, one-point field tests (check plugs) are performed during every compaction testing event to ensure the proper Proctor is being applied to determine the material’s in-place density (compaction) One point field test data is provided on page 7 of the ESP compaction report dated December 31, 2015 (attached). 1 Historic density ratios for ash placement indicate 1 cubic yard per ton is a conservative approach to determining compaction test frequencies. 12601 Plantside Drive | Louisville, Kentucky 40299 |Phone: 502.245.1353 | Fax: 502.245.7398 Dust control was provided throughout the monthly operations using water from the two onsite water trucks. We maintain the capability of adding chemical dust suppressants (Eco-Green products) as approved by Duke. No issues were noted with operational compliance at the time of this report. All operational activities have been found to be compliant with the permitted operations plans for each of the landfills at the Roxboro Steam Station. Attachments: Charah Tonnage Reporting Spreadsheet ESP Monthly Compaction Testing Report Cc: Kim Hutchinson, Duke Energy Rob Long, Charah Scott Nordgren, Duke Energy Matthew Morris, Charah Luke Cagle, Duke Energy Chris Emory, Charah Evan Andrews, Duke Energy Walter Fox, Charah Kyle Baucom, Duke Energy Robert Miller, Duke Energy Thomas Maier, AMEC Landfill Operating Record Charah file Ch a r a h ,  In c . Ro x b o r o  St e a m  St a t i o n De c e m b e r  20 1 5  To n n a g e  Su m m a r y  Re p o r t DF A  to  P4  La n d f i l l D F A  to  P6  La n d f i l l De c a n t  Ma t e r i a l To n s To n s To n s Dis p o s a l  / Re u s e To n s Ph a s e Gr i d Total 1s t   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 2n d   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 3r d   0. 0 0 1 0 3 8 . 6 2 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 1 0 3 8 . 6 2 4t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 5t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 6t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 7t h   0. 0 0 8 0 0 . 4 8 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 8 0 0 . 4 8 8t h   0. 0 0 3 9 6 . 5 0 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 3 9 6 . 5 0 9t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 10 t h   0. 0 0 3 8 8 . 3 8 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 3 8 8 . 3 8 11 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 12 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 13 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 14 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 15 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 3 6 0 . 0 0 P 6 N 1 0 , N 1 1 3 6 0 . 0 0 16 t h   0. 0 0 6 2 6 . 3 8 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 6 2 6 . 3 8 17 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 18 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 19 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 20 t h   0. 0 0 0 . 0 0 0 . 0 0 N / A 0 . 0 0 N / A N / A 0 . 0 0 21 s t   0. 0 0 4 9 6 . 0 8 0 . 0 0 N / A 0 . 0 0 P 6 N 1 0 , N 1 1 4 9 6 . 0 8 22 n d   0. 0 0 14 0 9 . 6 2 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 1409.62 23 r d   0. 0 0 62 6 . 3 8 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 626.38 24 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 25 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 26 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 27 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 28 t h   0. 0 0 23 9 . 2 4 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 239.2 4 29 t h   0. 0 0 30 1 . 0 4 0. 0 0 N/ A 0. 0 0 P6 N1 0 , N 1 1 301.0 4 30 t h   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 31 s t   0. 0 0 0. 0 0 0. 0 0 N/ A 0. 0 0 N/ A N/ A 0.00 MT D 0. 0 0 6, 3 2 2 . 7 2 36 0 . 0 0 YT D 16 0 , 8 9 4 . 5 6 1 7 2 , 0 1 2 . 7 2 30 1 5 . 0 0 37 , 2 3 5 . 0 0 37 3 , 1 5 7 . 2 8 Ro x b o r o  To n n a g e  Su m m a r y   De c e m b e r ‐15 DB A  to  La n d f i l l La n d f i l l e d 0. 0 0 6, 6 8 2 . 7 2 101 Corporate Boulevard, Suite 109 • West Columbia, SC 29169 1.800.960.7317 – Phone 803.705.2229, fax 803.802.2515 www.espassociates.com December 31, 2015 Charah, Inc. 12601 Plantside Drive Louisville, Kentucky 40299 Attention: Mr. Norman Divers Reference: FIELD DENSITY AND LABORATORY TESTING SERVICES December 2015 Duke Energy – Roxboro Steam Station Ash Landfill Semora, North Carolina ESP Project No. E4-BP21.305 NC PE Firm C-0587 Dear Mr. Divers: ESP Associates, P.A. (ESP), is providing field density and laboratory testing services of ash placed in landfill cells on a part-time, on call basis at the referenced project. This letter summarizes the field density testing and laboratory testing services for the period of December 1 through December 31, 2015. During this reporting period, an ESP representative visited the site and performed two (2) field density tests on ash placed within the landfill using a nuclear density gauge (ASTM D6938), in conjunction with a one-point Standard Proctor field test for each day’s density testing. As a result of inherent variability of fill materials, the one-point standard Proctor values are reference points performed in general accordance with portions of ASTM D698 that determine the maximum dry density and optimum moisture content for the material tested. The one-point data are shown on the attached “One Point Plot” sheet. In addition, oven laboratory moisture content testing (ASTM Field Density and Laboratory Testing Services – December 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill December 31, 2015 2 D2216) was performed for each field nuclear density gauge test and are the reported moisture values on the attached “Nuclear Density Test Report”. All tests indicate densities equaling or exceeding equaling or exceeding 90 percent of the materials Standard Proctor maximum dry density within the landfill interior and equaling or exceeding 95 percent of the materials Standard Proctor maximum dry density within the landfill shell. Please note that with the exception of the week ending December 13, 2015, weekly testing was not requested this month as Charah reported units were offline and no ash was hauled. During this period, ESP obtained one (1) bulk sample of ash material and transported it to our office and performed laboratory Standard Proctor moisture-density relationship testing (ASTM D698). The results of the field density tests along with the laboratory Standard Proctor moisture/density relationship test performed on the ash material and used to evaluate the field density tests performed during this period are enclosed for your review. As requested, elevations and Northing/Easting coordinates were obtained by ESP personnel at the time of testing utilizing equipment provided by Charah. The coordinates and elevations of test locations during this period are shown on the attached “Roxboro Ash Density Test Locations” sheet. Field Density and Laboratory Testing Services – December 2015 ESP Project No. E4-BP21.305 Duke Energy – Roxboro Steam Station Ash Landfill December 31, 2015 3 ESP appreciates the opportunity to be of service to you. If you should have any questions or need additional information, please feel free to contact us at your convenience. Sincerely, ESP Associates, P.A. David A. Bixler II, P.E. Andrew M. Burton, P.E. Senior Project Manager Project Manager DAB/AMB Enclosures: Nuclear Density Test Report (1 sheet) Density Test Location Sketches (1 sheet) Roxboro Ash Density Test Location Coordinates (1 sheet) One Point Plot – December 2015 (1 sheet) Moisture-Density Relationship (S-38) Test Information Test #Test Location Elevation Reference Gauge Make / Model / SN Field Technician 339 Landfill - Shell: Cell N-10 (See attached sketch dated 12-9-15)544.5 Landfill-Shell Troxler 3450 1027 SCAFF, Clyde 340 Landfill: Cell N-10 (See attached sketch dated 12-9-15)542.7 Greater than 100 ft. from crest Troxler 3450 1027 SCAFF, Clyde Related Tests Test #Related Test #Test Type Remarks Comments Tests are "Direct Transmission" (Method A) unless probe depth is noted as "Backscatter". Gauge calibration data on file with the testing agency. Test Results Test # Retest Of Test Date Proctor ID Method Soil Classification Optimum Moisture (%) Maximum Dry Density (pcf) In Place Moisture (%) In Place Dry Density (pcf) Probe Depth (in) Percent Compaction Min Comp. (%)Remark 339 12/9/15 S-38 F Ash 35.9 70.9 39.0 67.8 12 96 95 340 12/9/15 S-38 F Ash 35.9 70.9 39.1 66.4 12 94 90 Page 1 of 1 Nuclear Density Test Report Test Method: ASTM D6938 Client: Charah, Inc. Louisville, KY 40299 12601 Plantside Drive Project: Roxboro Ash Density Testing BP21.305.000 Semora, NC 101 Corporate Boulevard Suite 109 West Columbia, SC 29169 Phone: 803-705-2229 ESP - Columbia Date Test #Northing Easting Elevation ft 12/15/2015 339 992335.866 1982842.569 544.5 12/15/2015 340 992347.997 1982739.435 542.7 Roxboro Ash Density Test Location Coordinates 55 60 65 70 75 80 85 90 95 100 105 110 115 10 15 20 25 30 35 40 45 50 55 On Site Material Description TEST RESULTS 70.9 Zero Air Voids Curves For Gs = 2 6 - 2 8 35.9 PCF % Maximum Dry Density Optimum Water Content Roxboro Ash Density Testing Semora, North Carolina Job No. Project BP21.305 WATER CONTENT, % DR Y D E N S I T Y , p c f MOISTURE-DENSITY RELATIONSHIP Sample I.D. Test Method Material Source S-38 ASTM D698 - Procedure A Ash Project: Roxboro Ash Density Testing Location: Semora, North Carolina Number: BP21.305 3475 Lakemont B vdFort M , SC Te ephone: 803 802 2440 Fax: 803 802 2515 ES P C O M P A C O N - S N G L E B P 2 1 3 0 5 G P J B P 2 1 3 0 2 G P J 1 2 / 1 6 / 1 5 Moisture - Density Relationship Test Methods ASTM D 698, D 1557, D2216, AASHTO T99, T180, T265 Project No: E4-BP21.305 Project Name: Lab No: 5832 Roxboro Ash Density Testing Date: 12/15/15 Sample No: S-38 Tech: Chris Devine *Soil Description: Grayish Black Ash Type and Specification ESP ID# Cal. Date: Type and Specification ESP ID# Cal. Date: Balance (0.1 g) C-1B Compaction Mold 1/18/2015 Balance E-1C Compaction Hammer 9/7/2015 Straightedge 8C Oven 2/1/2015 Sieve #4 3G Proctor Method Determination D698 Method A Date:Tech: Proctor Workout 12/14/2015 C. Devine Point Number 1 2 3 4 5 6 7 8 Weight Soil and Mold (g)5508 5586 5666 5658 5646 Weight of Proctor Mold (g)4218 4218 4218 4218 4218 Weight of Soil in Mold (g)1290 1368 1448 1440 1428 Weight of Soil in Mold (lbs)2.844 3.016 3.192 3.175 3.148 Volume of Mold (cu.ft.).0001 0.0331 0.0331 0.0331 0.0331 0.0331 Wet Unit Weight (pcf)85.9 91.1 96.4 95.9 95.1 Moisture Can No D B K J V Weight of Can 135.22 134.95 134.86 135.14 134.54 Weight of Wet Soil & Can 459.33 480.27 724.66 699.51 572.75 Weight of Dry Soil & Can 389.1 396.04 569.2 540.95 444.91 Weight of Water 70.23 84.23 155.46 158.56 127.84 Weight of Dry Soil 253.88 261.09 434.34 405.81 310.37 Moisture Content (%)27.66%32.26%35.79%39.07%41.19% Dry Unit Weight (pcf)67.3 68.9 71.0 69.0 67.4 Comments: Tony Summers AMRL - N/A 12/15/2015 Supervising Technician Name Signature Certification Type/No. David A. Bixler II, PE Sr. Project Engineer 12/15/2015 Technical Responsibility Signature Date Moisture-Density Relationship Form ESP-L-01.04__Rev. 03__7/24/09 ESP-2 6A-41/30/2015 1/16/2015 9/30/2015 7A-21/30/2015 Position Annual Progress Report for Dam Safety Certificate of Approval Attachment 3 Incremental Development Drawings