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HomeMy WebLinkAbout5103_JohnstonLF_ CQAPh6A20211129,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Construction Quality Assurance Report Johnston County MSW Landfill — Phase 6A Smithfield, North Carolina Prepared for: Johnston County Department of Solid Waste Services Smithfield, North Carolina September 2021 Prepared by: NCLIC.NO.F-1370 (ENGINEERING) SMITH+GARONER 14 N. Boylan Avenue, Raleigh NC 27603 1919.828.0577 APRINTED ON 100% RECYCLED PAPER O 2021 Smith Gardner, Inc. This document is intended for the sole use of the client for which it was prepared and for the purpose agreed upon by the client and Smith Gardner, Inc. ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Construction Quality Assurance Report Johnston County MSW Landfill— Phase 6A Smithfield, North Carolina Prepared For: Johnston County Department of Solid Waste Services Smithfield, North Carolina S+G Project No.JOHNSTON-19-4 DocuSigned by: Spt,l&U'r K (' bumbvu 8B13721B7E5F488... SpencerW. Hollomon, P.E. Project Engineer D�oc�u}Signe�d+by: 5B6B31996A674D7... Pieter K. Scheer, P.E. Vice President, Senior Engineer September 2021 NCLIC.NG.F-1370 (ENGINEERING) SMITH+6ARONER 14 N. Boylan Avenue, Raleigh NC 27603 1919.828.0577 ,7190436A-6:25782A/,)A.!++"-s-A&-& A#! 'A"' -#As #(-+(""%" Johnston County MSW Landfill— Phase 6A Smithfield, North Carolina Construction Quality Assurance Report Table of Contents Paqe 1.0 OVERVIEW....................................................................................................................1 2.0 PROJECT DESCRIPTION.............................................................................................. 1 2.1 General......................................................................................................................1 2.2 Reference Documents...............................................................................................2 2.3 Design Clarifications and Modifications...................................................................2 2.4 Project Participants...................................................................................................3 2.4.1 Owner............................................................................................................3 2.4.2 Engineer/CQA Engineer................................................................................3 2.4.3 CQA Testing - Earthwork, Geosynthetics, & Construction Monitoring .......3 2.4.4 Contractor..................................................................................................... 4 2.4.5 Geosynthetics Installer.................................................................................4 2.4.6 Electrical Subcontractor...............................................................................4 2.4.7 Contractor's Surveyor...................................................................................4 3.0 SUMMARY OF CONSTRUCTION ACTIVITIES................................................................. 5 3.1 Site Preparation.........................................................................................................5 3.2 Erosion and Sedimentation Control Measures........................................................ 5 3.3 Earthwork.................................................................................................................. 5 3.4 Soil Liner....................................................................................................................6 3.5 Geosynthetic Clay Liner (GCL).................................................................................. 6 3.6 60 Mil HDPE Geomembrane..................................................................................... 7 3.7 Leachate Collection System/Protective Cover.........................................................7 3.8 Leachate Pumps and Force Main............................................................................. 7 3.9 Project Timeline........................................................................................................ 8 4.0 CQA PROGRAM............................................................................................................ 8 4.1 Scope of Services......................................................................................................8 5.0 EARTHWORK CQA........................................................................................................ 9 6.0 SOIL LINER CQA.......................................................................................................... 9 7.0 GCL CQA.................................................................................................................... 10 7.1 Material Approval.................................................................................................... 10 7.2 Manufacturer's Quality Control Submittals........................................................... 10 7.3 Material Control Testing......................................................................................... 10 8.0 60 MIL HDPE GEOMEMBRANE CQA........................................................................... 11 8.1 Material Approval.................................................................................................... 11 8.2 Manufacturer's Quality Control Certificates.......................................................... 11 8.3 Material Control Testing......................................................................................... 11 8.4 Field Seam Control Tests........................................................................................ 11 Johnston County MSW Landfill - Phase 6A Construction Quality Assurance Report September 2021 Table of Contents Page i ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""w. 8.5 Field Seam Record Tests........................................................................................ 11 9.0 LEACHATE MANAGEMENT SYSTEM CQA................................................................... 12 9.1 Material Approval.................................................................................................... 12 9.2 Manufacturer's Quality Control Submittals........................................................... 12 9.3 Material Control Testing......................................................................................... 12 9.4 Contractor CQC Testing.......................................................................................... 13 9.5 Leachate Pump Start-Up........................................................................................ 13 10.0 GEOTEXTILE CQA....................................................................................................... 13 10.1 Material Approval.................................................................................................... 13 10.2 Manufacturer's Quality Control Submittals........................................................... 13 10.3 Material Control Testing......................................................................................... 14 11.0 DRAINAGE GEOCOMPOSITE CQA............................................................................... 14 11.1 Material Approval.................................................................................................... 14 11.2 Manufacturer's Quality Control Submittals........................................................... 14 11.3 Material Control Testing......................................................................................... 14 12.0 RECORD DRAWINGS.................................................................................................. 14 13.0 PROJECT CERTIFICATION......................................................................................... 15 TABLES Table 1 Summary of Material Control and Record Tests - Structural Fill Table 2 Summary of Material Control and Record Tests - Soil Liner Test Fill Table 3 Summary of Material Control and Record Tests - Soil Liner Table 4 Summary of Material Control Tests - GCL Table 5 Summary of Material Control Tests - HDPE Geomembrane Table 6 Summary of Material Record Tests - HDPE Geomembrane Seams Table 7 Summary of Material Control Tests - Geotextiles Table 8 Summary of Material Control Tests - Drainage Geocomposite APPENDICES Appendix A Reference Documents (Permits/Approvals) Appendix B Design Clarifications and Modifications Appendix C Photographic Log Appendix D Subgrade Inspection and Well/Piezometer Abandonment Information Appendix E CQA Meeting Minutes Appendix F Earthwork CQA Data F1. CQA Test Results - Control Tests F2. CQA Test Results - Record Tests Appendix G Soil Liner CQA Data G1. CQA Test Results - Control Tests G2. CQA Test Results - Record Tests Appendix H Interface Shear Strength Test Data Appendix I GCL CQA Data 11. Manufacturer's Product Data Submittals and Quality Control Certificates 12. Geosynthetics Inventory - GCL 13. CQA Test Results - Material Control Tests Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Table of Contents Page ii ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Appendix J Geomembrane CQA Data J1. Manufacturer's Product Data Submittals and Quality Control Certificates J2. Geosynthetics Inventory - HDPE Geomembrane J3. CQA Test Results - Material Control Tests J4. Installer Logs Trial Seam Log Panel Placement Log Seaming and Non -Destructive Test Log Destructive Test Log Repair Log Tensiometer Calibration Certificates J5. CQA Test Results - Destructive Seam Testing (Laboratory) Appendix K Leachate Management System CQA Data K1. Manufacturer's Product Data Submittals and Quality Control Certificates K2. CQA Test Results - Drainage Aggregate K3. CQA Test Results - Protective Cover K4. Leachate Collection System Video Inspection K5. Leachate Force Main Pressure Test Documentation K6. Leachate Pump Start -Up Documentation Appendix L Geotextile CQA Data L1. Manufacturer's Product Data Submittals and Quality Control Certificates L2. Geosynthetics Inventory - Geotextiles (Type GT-C; Type GT-S) L3. CQA Test Results - Material Control Tests Appendix M Drainage Geocomposite CQA Data M1. Manufacturer's Product Data Submittals and Quality Control Certificates M2. Geosynthetics Inventory - Drainage Geocomposite M3. CQA Test Results - Material Control Tests Appendix N Record Drawings French Drain Record Drawing Conformance Table (Layer Thicknesses) Subgrade As -Built Survey Soil Liner As -Built Survey Geomembrane Record Layout Protective Cover As -Built Survey Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Table of Contents Page Ai ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 1.0 OVERVIEW This Construction Quality Assurance (CQA1 Report has been prepared to document the CQA activities performed during the construction of Phase 6A of the Johnston County municipal solid waste (MSW) landfill. The landfill facility is located on County Home Road near Smithfield, North Carolina and is owned and operated by Johnston County under State Solid Waste Permit No. 51-03. A Permit to Construct for Phase 6A was issued by the North Carolina Department of Environmental Quality Division of Waste Management (NCDWM) on May 8, 2020. 2.0 PROJECT DESCRIPTION 2.1 General Phase 6A is a 12.2 acre (lined) Subtitle D landfill unit designed by Smith Gardner, Inc. (S+G). The components of the constructed alternative liner system include the following components (top -down): • a leachate collection system (LCS1 consisting of: 0 24 inches of protective cover (soil); o a drainage geocomposite; and o a system of collection pipes and gravel columns. a 60 mil textured HDPE geomembrane liner; a geosynthetic clay liner (GCL1; and • an 18-inch thick soil liner with a hydraulic conductivity of no more than 1 x 10-5 cm/sec. Leachate generated from Phase 6A will be collected in a sump at the north end of the unit. From the sump, the leachate will be pumped via side -wall riser pumps and force main to an existing gravity main which drains to the on -site leachate storage lagoon. In addition to the liner and leachate management systems, the Phase 6A design also includes associated perimeter berms and erosion and sedimentation control measures. Also, part of the construction included the installation of geosynthetic rain cover over the protective cover in order to provide stormwater/leachate separation and, thus, reduce the quantity of leachate generated during initial operations. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 1 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 2.2 Reference Documents Phase 6A was constructed in accordance with the following documents with clarifications and modifications as described in Section 2.3. Construction Documents - Johnston County MSWLF - Phase 6A: Includes general and technical specifications, CQA manual, contract addenda, and construction drawings prepared by Smith Gardner, Inc. (S+G) and dated February 2020 (Conformed - April 2020). Permit To Construct Application - Johnston County MSWLF - Phase 6: Includes technical specifications, CQA manual, and permit drawings prepared by S+G and dated March 2019 (as revised through May 2020) (Permit to Construct issued by NCDWM on May 8, 2020 (copy provided in Appendix A. Erosion and Sedimentation Control Plan for Johnston County MSWLF Phase 6 prepared by S+G dated February 2020 (as revised through May 2020). Letter of approval correspondence dated May 18, 2020 from Land Quality Section (copy provided in Appendix A). NC DEQ DWR Approval of Individual 401 Water Quality Certification (WQC 004224) dated April 2, 2020 from NC DEQ DWR. U.S. Army Corps of Engineers Approval (Action ID: SAW-2017-00348) dated May 5, 2020 from U.S. Army C.O.E. 2.3 Design Clarifications and Modifications Clarifications and modifications to the above documents for Phase 6A are provided in Appendix B. A listing of each is as follows: Desian Clarification: Culvert Schedules Design Modification: Construction Dewatering (French Drain). Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 2 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 2.4 Project Participants The following parties were involved in the construction and CQA of Phase 6A: 2.4.1 Owner Johnston County Department of Solid Waste Services 680 County Home Road Smithfield, NC 27577 Phone: (919) 938-4750 Contact: Rick Proctor, Director 2.4.2 Engineer/CQA Engineer Smith Gardner, Inc. (S+G1 14 N. Boylan Ave. Raleigh, NC 27603 Phone: (919) 828-0577 Fax: (919) 828-3899 Contacts: Pieter Scheer, P.E., Project Manager Herman Thio, P.E., Electrical Engineer 2.4.3 CQA Testing - Earthwork, Geosynthetics, C Construction Monitoring Geotechnics (Soil Testing) 2200 Westinghouse Blvd., Suite 103 Raleigh, NC 27604 Phone: (919) 876-0405 Fax: (919) 876-0460 Contacts: Mike Smith, Regional Manager Jeremy Shaw, Field Technician Erik Lindquist, Field Technician Geotechnics (Laboratory Testing of Geosynthetics) 544 Braddock Ave. East Pittsburgh, PA 15112 Phone: (412) 823-7600 Fax: (412) 823-8999 Contact: J.P. Kline, P.E., Lab Director Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 3 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 2.4.4 Contractor Shamrock Environmental Corp. (Shamrock) 6106 Corporate Park Drive Browns Summit, NC 27214 Phone: (800) 881-1098 Contacts: Bryan Gaidanowicz, Project Manager Mike Shelden, Project Superintendent 2.4.5 Geosynthetics Installer Chesapeake Containment Systems, Inc. (CCS) 2690-D Salisbury Hwy. Statesville, NC 28677 Phone: (704) 208-3440 Contact: Jordan Sellers, Project Manager 2.4.6 Electrical Subcontractor TEC Industrial, LLC 161 Gold Hill Rd Madison NC 27025 Phone: (336) 223-6379 Contacts: Mac Taylor, Project Manager 2.4.? Contractor's Surveyor Bateman Civil Survey Co., P.C. 2524 Reliance Avenue Apex, North Carolina 27539 Phone: (919) 577-1080 Contact: Steven Carson, PLS, Project Manager Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 4 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 3.0 SUMMARY OF CONSTRUCTION ACTIVITIES Major elements of the project are discussed below. Photos documenting the construction of Phase 6A can be found in Appendix C. Prior to Shamrock beginning work, a project Pre - Construction Meeting was held on May 22, 2020. 3.1 Site Prenaration Construction of Phase 6A began in June 2020 with the surveying/staking of the limits of construction and the initiation of site preparation activities by Shamrock. During site clearing, several wells and piezometers were abandoned (Appendix D). 3.2 Erosion and Sedimentation Control Measures The construction of erosion and sedimentation control measures took place in conjunction with project activities and under the site permits issued by the Land Quality Section of the NC Division of Land Resources. Permanent drainage channels, culverts, etc. were added as areas were brought to grade. Once areas reached final grade, the areas were vegetated in accordance with project requirements. 3.3 Earthwork Once portions of the site were cleared and grubbed, excavation and stockpiling activities were performed. Excavated materials including stripped topsoil, unsuitable soils, and structural fill were identified and separated. Topsoil and unsuitable soils were taken to the stockpile area within Borrow Area D for future use by Shamrock or as daily or intermediate cover by the County. The soils within the Phase 6A footprint identified for use as structural fill were excavated and placed and compacted where needed. As anticipated, during excavation activities, several areas required overexcavation and backfill due to the presence of unsuitable materials. During construction of the subgrade, continued seepage was observed along and near the eastern slope in the southern half of Phase 6A due to significant precipitation during the initial months of construction. Because of this, a French drain was added (Reference Section 2.3 (Design Modification No. 1) and Appendix B). The French drain was constructed using perforated corrugated polyethylene pipe encased in No. 57 stone, which was wrapped in a Type GT-S geotextile. Upon construction, the top of the drain (top of stone) was surveyed to verify that a minimum separation of 4 feet was maintained to subgrade elevations (record information on the French drain is provided in Appendix N.). Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 5 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Upon completion of the Phase 6A subgrade and in accordance with the permit, Ms. Joan Smyth, P.G. visited and examined the site to identify any subgrade conditions that may adverselyaffect the design, construction, or operation of the unit. As documented in Ms. Smyth's report (Appendix D) no adverse conditions were observed. A record drawing showing completed subgrade elevations is provided in Appendix N. 3.4 Soil Liner Prior to the construction of the soil liner, a soil liner CQA meeting was held in accordance with the requirements of the project CQA manual. A summary of this meeting can be found in Appendix E. Prior to construction of the soil liner, a test fill (pad) was constructed on November 23rd and 241h, 2020 (Lifts 1 & 2) and December 2rd, 2020 (Lift 3) near the south end of Phase 6A. The test fill was constructed using the procedure described below and tested in accordance with the project specifications and CQA manual. All tests on the test fill met or exceeded project requirements. Once the test results for the test fill were obtained, construction of the soil liner was initiated. For the placement and compaction of the compacted soil liner, Shamrock used the following procedure: 1. Shamrock would first excavate the material from the borrow area and place the material in nominal 10 inch loose lifts. 2. The loose material was then processed using tracked equipment to break down clods as needed. 3. Shamrock then used a water tanker to add moisture, as needed, to the loose lift of soil liner. 4. Next a pad foot compactor was used to compact the liner. 5. Finally, each compacted lift was rolled with a smooth drum roller to seal the surface against moisture loss and to protect the lift from precipitation. Prior to the placement of subsequent lifts, the top of each lift was scarified to allow bonding of the lifts. A record drawing showing completed soil liner elevations is provided in Appendix N. 3.5 Geosynthetic Clay Liner (GCL) Prior to the installation of geosynthetics, a geosynthetics CQA meeting was held in accordance with the requirements of the project CQA manual. A summary of this meeting can be found in Appendix E. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 6 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" GCL placement by CCS began on April 7, 2021 at the south end of Phase 6A and proceeded to the north following the parameters of the project specifications and standard industry practices. 3.6 60 Mil HOPE Geomembrane The GCL installation was followed closely by placement of the 60 mil HDPE geomembrane to minimize the potential for damage to the GCL by hydration. In accordance with project requirements, textured HDPE geomembrane was placed over the GCL. A record drawing showing the orientation of geomembrane panels as well as destructive sample and repair locations is provided in Appendix N. 3.7 Leachate Collection System/Protective Cover As the 60 mil HDPE geomembrane installation was proceeding, placement of cushion (Type GT-C) geotextile (under gravel columns) and drainage geocomposite was begun. As these materials were placed, the overlying protective cover soil was placed by Shamrock beginning at the south end of Phase 6A and proceeding to the north. In order to protect the underlying geosynthetics from damage, trucks operated on at least 3 feet of material and low ground pressure dozers were used to push out the material. Only minor wrinkling of the geomembrane was observed during placement (as is typical) and good contact between the HDPE geomembrane and the underlying GCL was apparent. Along with placement of protective cover, Shamrock constructed the gravel columns/pipes across the base of Phase 6A. The gravel columns were covered with Type GT-S geotextile. The soils used for protective cover were excavated from Borrow Area D and were silty sands (SM) and clayey sands (SC). The material was compacted by tracked equipment during placement and the majority of Phase 6A was covered with geosynthetic rain cover upon completion of protective cover placement. 3.8 Leachate Pumos and Force Main During protective cover placement, Shamrock installed the Leachate force main along the northern perimeter berm. Once the leachate sump area was completed, the leachate side risers and pumps along with the associated electrical conduits and equipment were installed and connected with the Leachate force main. A pump start-up was performed as described in Section 9.5. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 7 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 3.9 Project Timeline The following is a timeline of major items of work and project milestones: Notice to Proceed: Start of Site Work: Compacted Soil Liner Geosynthetics Installation: Aggregate/Protective Cover Placement Geosynthetic Rain Cover Installation: Pump Start Up: 4.0 CQA PROGRAM 4.1 Scope of Services 06/15/20 06/15/20 11/23/20 - 12/2/20 (Test Fit[) 12/30/20 - 3/27/21 (General Fit[) 4/7/21 - 5/3/21 4/27/21 - 6/7/21 6/7/21 - 6/14/21 9/23/21 In satisfying the requirements of the Project CQA Manual for Phase 6A, the following activities were performed: • Observation and documentation of construction of prepared subgrade, structural fill, soil liner, GCL, HDPE geomembrane, and leachate collection system (LCS). • Field and/or laboratory testing of structural fill, soil liner, geosynthetics, and drainage aggregate. • Review of submittals from the Contractor for conformance with project specification and CQA requirements. • Review/preparation of record drawings. • Preparation of the final CQA report. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 8 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 5.0 EARTHWORK CQA The criteria for construction of structural fill per the project specifications included the following: Materials: SM, SP, SC, ML, MH, CL-ML, CL, or CH (ASTM D 2488) with no topsoil or other deleterious material and no stones or rocks in excess of one half the lift thickness as compacted; Density: Minimum 95% Maximum Standard Proctor Dry Density (98% under roads and structures) (ASTM D 698); Moisture Content: As necessary for compaction; and Lift Thickness: 8-inch max. (compacted). The number and results of material control and record tests performed on the structural fill are summarized in Table 1. Other tests performed on an on -going basis during construction included a visual classification of soils (ASTM D 2488) and monitoring of loose lift thickness. Note that the number of tests required was based on an approximate quantity of 150,000 CY of material placed (in -place measure). The results of field and laboratory testing of structural fill can be found in Appendix F. A record drawing showing completed subgrade elevations is provided in Appendix N. 6.0 SOIL LINER CQA The criteria for construction of soil liner per the project specifications included the following: Materials: Soil type as required to achieve the hydraulic conductivity criteria with no organics, debris, or other detrimental material; Clod Size: Max. 1/4 inch; Gradation: Max. ='/2 inch (finished soil liner surface) and Max. = 11/2 inches (below finished soil liner surface); Lift Thickness: 6-inch max. (compacted). Density: Minimum 95% Maximum Standard Proctor Dry Density (ASTM D 698); Moisture Content: > optimum moisture content (ASTM D 698); Hydraulic Conductivity: < 1 x 10-5 cm/sec; and Thickness: 18 inches min. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 9 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" The number and results of material control and record tests performed on the soil liner are summarized in Table 2 (Test Fill) and Table 3. Note that the number of tests required was based on an approximate quantity of 29,800 CY of material placed (in -place measure). Other tests performed on an on -going basis during construction included a visual classification of soils (ASTM D 2488) and monitoring of clod size and loose lift thickness. The results of field and laboratory testing of the soil liner can be found in Appendix G. Final thickness of the soil liner was verified by Bateman Civil Survey Co. An as -built of the soil liner can be found in Appendix N. 7.o GCL CQA 7.1 MaterialApproval S+G reviewed and approved the geosynthetic clay liner (GCL) product submittals provided by Shamrock. The selected material was BentoLiner NWL-35 as manufactured by Solmax Geosynthetics, LLC of Houston, TX. Copies of selected product submittals for these products can be found in Appendix 11. Note that, as part of the submittal information for all geosynthetics, interface shear strength testing was performed for the potential critical geosynthetic/soil or geosynthetic/geosynthetic interfaces within the liner systems. This testing was performed on representative material samples by Geotechnics of Pittsburgh, PA under subcontract to CCS. A summary of this testing performed is provided in Appendix H. The results for each interface were found to meet or exceed project design requirements. 7.2 Manufacturer's Quality Control Submittals S+G reviewed and approved Solmax's quality control certificates upon delivery to the site. Copies of these certificates can be found in Appendix 11. 7.3 Material Control Testing The number and results of material control tests performed on the GCL are summarized in Table 4. Note that the number of tests required was based on a quantity of 590,550 SF (254 rolls/6 lots) of material received. A geosynthetics inventory log for the GCL can be found in Appendix 12. This log identifies the rolls which were sampled for material control testing. The results of material control testing of GCL can be found in Appendix 13. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page to ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 8.0 60 MIL HOPE GEOMEMBRANE CQA 8.1 MaterialApproval S+G reviewed and approved the 60 mil HDPE geomembrane product submittals provided by Shamrock. The selected material was 60 mil Double -Side Textured HDPE geomembrane as manufactured by Solmax Geosynthetics, LLC of Houston, TX. Copies of selected product submittals for these products can be found in Appendix J1. 8.2 Manufacturer's Quality Control Certificates S+G reviewed and approved Solmax's quality control certificates upon delivery to the site. Copies of these certificates can be found in Appendix J1. 8.3 Material Control Testi The number and results of material control tests performed on the 60 mil HDPE geomembrane is summarized in Table 5. Note that the number of tests required was based on a quantity of 626,184 SF (54 rolls/1 lot) of material received. A geosynthetics inventory log for HDPE geomembrane can be found in Appendix J2. This log identifies the rolls which were sampled for material control testing. The results of material control testing of HDPE geomembrane can be found in Appendix J3. 8.4 Field Seam Control Tests The results of trial welds performed by CCS can be found in Appendix J4. s.5 Field Seam Record Tests Seaming forms (including the results of nondestructive testing) can be found in Appendix J4. The results of destructive CQC and CQA testing can be found in Appendices J4 and J5, respectively. A geomembrane repair report documenting all repairs of defects and destructive sample locations can be found in Appendix J4. Record testing of HDPE geomembrane seams is summarized in Table 6. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 11 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 9.0 LEACHATE MANAGEMENT SYSTEM CQA 9.1 MaterialApproval S+G reviewed and approved the leachate management system product submittals provided by Shamrock. The selected materials included the following: Drainage Aggregate: I Martin Marietta - Benson Quarry (No. 57 Stone) HDPE Pipe/Fittings: I Lee Supply 2", 3", and 8" Diam. (DR 11); 18" Diam. (DR 17) Valves: I Ball & Check Valves: Asahi America Pumps: Side Risers (2): QED Environmental Systems Torpedo Sideslope Pump Model 45SI0-3 (1 HP) Geotextiles: See Section 10.0 Drainage Geocomposite: See Section 11.0 Geosynthetic Rain Cover: Raven Dura-Skrim 12BV Copies of selected product submittals for these products can be found in Appendix K1. 9.2 Manufacturer's Quality Control Submittals S+G reviewed and approved stone gradation information from Shamrock related to the No. 57 stone. This information is provided in Appendix K1. 9.3 Material Control Testi The gradation of the No. 57 stone provided for use in the leachate collection system was evaluated in accordance with ASTM C 136 for the approximate 3,300 CY of material provided. One gradation test was performed on the No. 57 stone (meeting the 1 test per 5,000 CY project requirement) and the results met project requirements. Additionally, carbonate content of the No. 57 stone was evaluated in accordance with ASTM D 3042. The results demonstrated a carbonate content of 0.6%. The results of the CQA testing on No. 57 stone can be found in Appendix K2. Grain size analyses (in accordance with ASTM D 422) were either performed during the project or previously performed for the borrow areas used as protective cover. A total of Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 12 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 10 gradation tests (meeting the 1 test per 5,000 CY project requirement based on 39,700 CY of protective cover placed) documented the soils used for protective cover were classified as silty sands (SM) and clayey sands (SC), which meet project requirements. Note that compaction testing was not performed as tracking of the final lift was specified. The results of the CQA testing on protective cover soil can be found in Appendix K3. 9.4 Contractor CQC Testing Upon completion of construction of the leachate collection system, the piping system was flushed with water and inspected using a video camera by Jet Clean America, a subcontractor to Shamrock. Documentation of the pipe inspection can be found in Appendix K4. During construction of the leachate force main, Shamrock performed a hydrostatic pressure test on the force main. The pressure testing was conducted in accordance with ASTM F 2164. Documentation of the successful test can be found in Appendix K5. 9.5 Leachate Pump Start -Up Near completion of the project, Shamrock provided the services of the pump manufacturer, QED Environmental Systems, to perform start-up of the leachate pumps on September 23, 2021. Documentation of the pump start-up can be found in Appendix K6. 10.0 GEOTEXTILE CQA 10.1 Material Approval S+G reviewed and approved the geotextile product submittals provided by Shamrock. The selected materials were Mirafi S1600 (Type GT-C geotextile) as manufactured by Tencate Geosynthetics of Pendergrass, CA and TerraTex N06 (Type GT-S geotextile) as manufactured by Thrace Linq for Hanes Geo Components of Winston-Salem, NC. Copies of selected product submittals for this product can be found in Appendix L1. 10.2 Manufacturer's Qualitv Control Submittals S+G reviewed and approved manufacturer quality control certificates upon delivery to the site. Copies of these certificates can be found in Appendix L1. Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 13 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 10.3 Mate ria[Control Testi The number and results of material control tests performed on the geotextiles is summarized in Table 9. Note that the number of tests required was based on a quantity of 67,500 SF (15 rolls/1 lot) of Type GT-C geotextile and 67,500 SF (15 rolls/1 lot) of Type GT-S geotextile material received and used in Phase 6A. A geosynthetics inventory log for Type GT-C and Type GT-S geotextile can be found in Appendix L2. The results of material control testing of geotextiles can be found in Appendix L3. 11.0 DRAINAGE GEOCOMPOSITE CQA 11.1 MaterialARproval S+G reviewed and approved the drainage geocomposite product submittals provided by Shamrock. The selected material was FabriNet TRX 300 as manufactured by Solmax Geosynthetics, LLC of Houston, TX. Copies of selected product submittals for this product can be found in Appendix M1. 11.2 Manufacturer's Oualitv Control Submittals S+G reviewed and approved Solmax's quality control certificates upon delivery to the site. Copies of these certificates can be found in Appendix M1. 11.3 Material Control Testi The number and results of material control tests performed on the drainage geocomposite is summarized in Table 9. Note that the number of tests required was based on a quantity of 726,750 SF (255 rolls/2 lots) of material received. A geosynthetics inventory log for drainage geocomposite can be found in Appendix M2. The results of material control testing of drainage geocomposite can be found in Appendix M3. 12.0 RECORD DRAWINGS The following record (as -built) drawings depicting the construction of Phase 6A can be found in Appendix N: • French Drain; • Conformance Table (Layer Thicknesses) (prepared by Bateman Civil Survey); • Subgrade (prepared by Bateman Civil Survey); • Soil Liner (prepared by Bateman Civil Survey); • HDPE Geomembrane (prepared by Chesapeake Containment Systems); and • Protective Cover (prepared by Bateman Civil Survey); Johnston County MSW Landfill- Phase 6A Construction Quality Assurance Report September 2021 Page 14 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" 13.0 PROJECT CERTIFICATION Based on the observations and results of the CQA program documented herein, it is my professional opinion that the construction of Phase 6A of the Johnston County MSW Landfill was completed in accordance with the following: i. The Project CQA Manual; ii. The conditions of the Permit to Construct Phase 6A; iii. The requirements of 15A NCAC 13B.1624; and iv. Acceptable engineering practices. SMITH GARDNER, INC. ®®.�$° � �� °°ell DocuSigned by: I-P r.L ti SAL r an a 5B6631996A674D7...4. Pieter K. Scheer, P.E.�� Project Manager �����@��� 'P40,'ensena�en®"y@ 9/29/2021 Johnston County MSW Landfill— Phase 6A Construction Quality Assurance Report September 2021 Page 15 ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill Phase BA Construction TABLET SUMMARY OF MATERIAL CONTROL AND RECORD TESTS STRUCTURAL FILL Property Control Tests Record Tests Moisture -Density Relationship (Proctor) In -Place Density In -Place Moisture Content Units ----- % Std. Proctor % Test Method ASTM D 698 ASTM D 2922' ASTM D 30172 Required Test Frequency 5,000 CY per each soil 20,000 ft2 per lift & 1 per 500 LF of Berms (<200 ft. base width) (+/- 1 Per 500 CY) 20,000 ft2 per lift & 1 per 500 LF of Berms (<200 ft. base width) (+/- 1 Per 500 CY) No. of Tests Required 30 300 300 No. of Tests Performed 13 (See Note 31 341 341 Specified Value ----- > 95% Std. Proctor As Required for Density Minimum Value ----- 95.0 -5.8% Opt. Maximum Value ----- 103.0 10.7% Opt. Average Value ----- 97.0 1.1 % Opt. Quantity of Structural Fill (In-PLace): 150,000 CY Notes: 1. Nuclear density values verified periodically by sand cone (ASTM D 1556), rubber balloon [ASTM D 2167), and/or drive cylinder (ASTM D 29371 test methods. 2. Nuclear moisture values verified periodically by oven (ASTM D 22161, microwave oven (ASTM D 46431, and/or direct heating (ASTM D 4959) test methods. 3. Fewer tests were deemed acceptable based on the consistency of materials used. SMITH GARDNER, INC. Table 1 - Structural Fill JC Phase 6A MSWLF CQA Report Tables ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%'. Johnston County MSW Landfill Phase 6A Construction TABLE 2 SUMMARY OF MATERIAL CONTROL AND RECORD TESTS COMPACTED SOIL LINER TEST FILL 1of1 Property Control Tests Record Tests Grain Size Analysis Atterberg Limits Moisture -Density Relationship (Proctor) Hydraulic Conductivity (Remolded) In -Place Density In -Place Moisture Content Hydraulic Conductivity (Undisturbed) Units ----- ----- ----- cm/sec % Std. Proctor % cm/sec Test Method ASTM D 6913 ASTM D 4318 ASTM D 698 ASTM D 5084 ASTM D 29221 ASTM D 30172 ASTM D 5084 Required Test Frequency 1 per lift 1 per lift 1 per lift 1 per Lift 3 per lift 3 per Lift 1 per lift No. of Tests Required 3 3 3 3 9 9 3 No. of Tests Performed 3 3 3 3 17 17 3 Specified Value < 1.5" ----- ----- < 1 x 10-5 o > 95 /o Std. Proctor > % Opt. & As Required for Hydraulic Conductivity 5 < 1 x 10- Minimum Value Pass ----- ----- 3.0E-08 96 0.0% Opt. 2.7E-08 Maximum Value Pass ----- ----- 1.2E-07 100 5.3% Opt. 7.0E-08 Average Value Pass ----- ----- 6.2E-08 98 1.6% Opt. 4.7E-08 Number of Lifts: 3 Notes: 1. Nuclear density values verified periodically by sand cone [ASTM D 15561, rubber balloon [ASTM D 21671, and/or drive cylinder [ASTM D 2937) test methods. 2. Nuclear moisture values verified periodically by oven (ASTM D 2216), microwave oven [ASTM D 4643), and/or direct heating (ASTM D 4959) test methods. SMITH GARNER, INC. Table 2 - CSL Test FiLL JC Phase 6A MSWLF COA Report Tables ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%'. Johnston County MSW Landfill Phase 6A Construction TABLE 3 SUMMARY OF MATERIAL CONTROL AND RECORD TESTS COMPACTED SOIL LINER 1of1 Property Control Tests Record Tests Grain Size Analysis Atterberg Limits Moisture -Density Relationship (Proctor) Hydraulic Conductivity (Remolded) In -Place Density In -Place Moisture Content Hydraulic Conductivity (Undisturbed) Units ----- ----- ----- cm/sec % Std. Proctor % cm/sec Test Method ASTM D 6913 ASTM D 4318 ASTM D 698 ASTM D 5084 ASTM D 2922' ASTM D 30172 ASTM D 5084 Required Test Frequency 2,000 CY 2,000 CY 5,000 CY 10,000 CY 10,000 ft2 per lift 10,000 ft2 per lift 40,000 ft2 per lift No. of Tests Required 15 15 6 3 160 160 40 No. of Tests Performed 20 20 8 6 254 254 42 Specified Value < 1.5" ----- ----- < 1 x 10-5 > 95% Std. Proctor > Opt. & As Required for Hydraulic Conductivity < 1 x 10-5 Minimum Value Pass ----- ----- 2.4E-08 95 -0.2% Opt. 3.8E-09 Maximum Value Pass ----- ----- 2.3E-06 100 5.3% Opt. 7.0E-07 Average Value Pass ----- ----- 4.2E-07 98 1.3% Opt. 6.9E-08 Quantity of Compacted Soil Liner (In -Place): 29,800 CY Area of Compacted Soil Liner: 12.2 AC Number of Lifts: 3 Notes: 1. Nuclear density values verified periodically by sand cone (ASTM D 1556), rubber balloon (ASTM D 2167), and/or drive cylinder (ASTM D 2937) test methods. 2. Nuclear moisture values verified periodically by oven (ASTM D 2216), microwave oven (ASTM D 4643), and/or direct heating (ASTM D 49591 test methods. SMITH GARDNER, INC. Table 3 - CSL JC Phase 6A MSWLF CQA Report Tables ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%'. Johnston County MSW Landfill TABLE 4 1 of 1 Phase 6A Construction SUM MARY OF MATERIAL CONTROL TESTS GEOSYNTHETIC CLAY LINER Property Hydraulic Conductivity Bentonite Content Peel Strength Average Units cm/sec psf lbs Test Method ASTM D 5887 ASTM D 5993 ASTM D 6496 Required Test Frequency 100,000 ftz or 1 per Lot 100,000 ftz or 1 per Lot 100,000 ft2 or 1 per Lot No. of Tests Required 6 6 6 No. of Tests Performed 6 6 6 Specified Value < 5 X 10-9 > 0.75 > 5.3 Sample I.D. Results Roll2335-089143 (L20-120-002-001) 1.04E-09 0.89 11.4 Roll 2335-089186 (L20-120-002-002) 1.14E-09 0.91 10.9 Roll 2335-089229 (L20-120-002-003) 1.30E-09 0.87 12.7 Roll 2335-089272 (L20-120-002-004) 1.17E-09 0.93 11.8 Roll2335-089315(1-20-120-002-005) 1.28E-09 0.93 12.2 Roll, 2335-089358(L20-120-002-006) 1.79E-09 0.76 14.6 Minimum Value 1.04E-09 0.76 10.9 Maximum Value 1.79E-09 0.93 14.6 Average Value 1.29E-09 0.88 12.3 Quantity of GCL Received: 590,550 ftz 6 Lots Notes: 1. At 0% Moisture. SMITH GARDNER, INC. Table 4 - GCL JC Phase 6A MSWLF COA Report Tables ,7190436A-6:25782A/,)A.!++"-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill Phase BA Construction TABLE 5 SUMMARY OF MATERIAL CONTROLTESTS HOPE GEOMEMBRANE 1 of 1 Property Thickness Density Carbon Black Content Carbon Black Dispersion Tensile Properties Tear Resistance Tensile Strength at Yield Tensile Strength at Break Elongation at Yield Elongation at Break MD' CD' MD CD MD CD MD CD MD CD Units mils g/cm3 % Category lb/inch lb/inch % % Lbs Test Method ASTM D 5994 ASTM D 1505 ASTM D 4218 ASTM D 5596 ASTM D 6693 (Type IV) ASTM D 1004 Required Test Frequency 100,000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot No. of Tests Required 7 7 7 7 7 7 7 7 7 No. of Tests Performed 7 7 7 7 7 7 7 7 7 Specified Value 60 (See Note 31 > 0.940 2.0 - 3.0 1, 2, or 3 > 126 > 90 > 12 > 100 > 42 Sample I.D. Results Roll 1001-148561 (L20-120-001-001) 59 0.946 2.46 Pass 172 168 187 170 15 14 440 440 60.7 58.3 Roll 1001-148569 (L20-120-001-002) 58 0.947 2.30 Pass 152 161 172 173 15 13 440 470 55.7 55.6 Roll 1001-148578 (L20-120-001-003) 60 0.947 2.41 Pass 153 161 184 173 15 15 500 480 57.0 55.1 Roll 1001-148587 (L20-120-001-004) 59 0.946 2.38 Pass 156 160 186 164 15 14 460 280 58.0 55.9 Roll 1001-148595 (L20-120-001-005) 59 0.946 2.62 Pass 160 161 183 173 15 14 430 480 57.4 56.8 Roll 1001-148604 (L20-120-001-006) 60 0.947 2.55 Pass 159 162 193 175 15 14 520 470 57.2 57.0 Roll 1001-148613 (L20-120-001-007)i 60 0.947 2.43 Pass 164 168 190 175 14 14 430 350 57.2 57.0 Minimum Value 58 0.946 2.30 Pass 152 160 172 164 14 13 430 280 55.7 55.1 Maximum Value 60 0.947 2.62 Pass 172 168 193 175 15 15 520 480 60.7 58.3 Average Value 59 0.947 2.45 Pass 159 163 185 172 15 14 460 424 58 56.5 Quantity of HDPE Geomembrane Received: 626,184 ft2 1 Lots Notes: 1. Carbon black dispersion for 10 different views: Min. 9 of 10 in Categories 1 or 2; All 10 in Categories 1, 2, or 3. 2. MD = Machine Direction; CD = Cross Machine Direction 3. Thickness value is a nominal value. Minimum average can be-5% (57 mils). SMITH GARDNER, INC. Table 5 - HDPE-GM JC Phase 6A MSWLF CQA Report Tables ,7190436A-6:25782A/,)A.!++"-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill TABLE 6 1 of 3 Phase 6A Construction SUMMARY OF MATERIAL RECORD TESTS HOPE GEOMEMBRANESEAMS Property Peel Strength ' Shear Strength ' Peak Load Outside Track (Weld "A") Locus of Break & Incursion Peak Load Inside Track (Weld "B"I Locus of Break & Incursion Peak Load Locus of Break & Incursion Units Lbs/inch ----- lbs/inch ----- Lbs/inch ----- Test Method ASTM D 6392 COC Field Destructive Seam Testing Required Test Frequency 500 LF No. of Tests Required 55 No. of Tests Performed 59 Specified Value > 91 (Hot Wedge) > 78 (Ex. Fillet) (See Note 21 > 91 (Hot Wedge) - > 78 (Ex. Fillet) (See Note 2) > 120 (See Note 21 Results - See Appendix J COA Laboratory Destructive Seam Testing Required Test Frequency 1 per day of Production Seaming No. of Tests Required 11 No. of Tests Performed 20 Specified Value (See Note 21 > 91 (Hot Wedge) > 78 (Ex. Fillet) (See Note 21 >> 91 (Hot Wedge) > 78 (Ex. Fillet) (See Note 2) > 120 (See Note 21 Sample I.D. Results DS-1 128.4 Pass 135.5 Pass 169.5 Pass DS-2 135.8 Pass 132.3 Pass 160.0 Pass DS-3 125.3 Pass 123.1 Pass 158.9 Pass DS-4 131.1 Pass 128.1 Pass 172.1 Pass DS-5 134.5 Pass 121.6 Pass 160.9 Pass DS-6 132.4 Pass 122.9 Pass 164.8 Pass DS-7 135.9 Pass 136.5 Pass 168.4 Pass DS-8 128.5 Pass 139.9 Pass 173.4 Pass DS-9 130.6 Pass 130.3 Pass 162.5 Pass DS-10 128.1 Pass 127.3 Pass 164.5 Pass DS-11 133.8 Pass 135.6 Pass 160.3 Pass DS-12 134.7 Pass 131.2 Pass 168.1 Pass DS-13 128.1 Pass 124.4 Pass 163.2 Pass DS-14 139.1 Pass 134.2 Pass 164.9 Pass DS-15 147.8 Pass 143.9 Pass 158.7 Pass DS-16 125.9 Pass 141.6 Pass 162.9 Pass DS-17 129.5 Pass 134.7 Pass 160.5 Pass DS-18 130.4 Pass 140.1 Pass 160.8 Pass DS-19 132.4 Pass 129.5 Pass 173.1 Pass DS-20 130.8 Pass 138.9 Pass 166.7 Pass SMITH GARGNER, INC. Table 6 - HDPE-GM Seams JC Phase 6A MSWLF CDA Report Tables ,7190436A-6:25782A/,)A.!++"-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill TABLE 6 2 of 3 Phase 6AConstruction SUMMARY OF MATERIAL RECORD TESTS HOPE GEOMEMBRANE SEAMS COA Laboratory Destructive Seam Testing IContinuedl Specified Value (See Note 2) > 91 Hot Wedge (See Note 21 > 91 Hot Wedge -78 [Ex (See Note 21 > 120 (See Note 21 Sample I.D. Results DS-21 138.2 Pass 129.2 Pass 164.0 Pass DS-22 130.2 Pass 118.4 Pass 163.6 Pass DS-23 121.9 Pass 136.5 Pass 168.2 Pass DS-24 126.5 Pass 117.1 Pass 160.5 Pass DS-25 130.7 Pass 133.2 Pass 165.9 Pass DS-26 129.2 Pass 137.8 Pass 167.2 Pass DS-27 133.8 Pass 132.8 Pass 165.4 Pass DS-28 147.1 Pass 153.6 Pass 185.0 Pass DS-29 127.0 Pass 136.2 Pass 168.7 Pass DS-30 128.1 Pass 151.1 Pass 170.5 Pass DS-31 131.6 Pass 129.6 Pass 164.1 Pass DS-32 130.1 Pass 131.4 Pass 166.8 Pass DS-33 131.0 Pass 143.4 Pass 177.3 Pass DS-34 131.1 Pass 138.5 Pass 169.9 Pass DS-35 151.0 Pass 140.0 Pass 175.2 Pass DS-36 127.9 Pass 138.5 Pass 175.1 Pass DS-37 152.0 Pass 155.3 Pass 166.9 Pass DS-38 132.5 Pass 138.8 Pass 169.6 Pass DS-39 126.3 Pass 129.0 Pass 166.4 Pass DS-40 136.5 Pass 137.0 Pass 173.5 Pass DS-41 129.1 Pass 137.9 Pass 166.2 Pass DS-42 131.5 Pass 120.7 Pass 166.4 Pass DS-43 153.9 Pass 150.2 Pass 167.2 Pass DS-44 127.3 Pass 132.6 Pass 173.9 Pass DS-45 125.4 Pass 141.3 Pass 169.1 Pass DS-46 149.4 Pass 150.5 Pass 161.3 Pass DS-47 133.5 Pass 139.7 Pass 178.6 Pass DS-48 131.4 Pass 142.1 Pass 171.6 Pass DS-49 133.7 Pass 144.7 Pass 169.8 Pass DS-50 135.4 Pass 136.4 Pass 165.3 Pass DS-51 144.2 Pass 148.9 Pass 167.8 Pass DS-52 134.3 Pass 134.2 Pass 164.3 Pass DS-53 129.7 Pass 129.9 Pass 168.7 Pass DS-54 132.6 Pass 127.1 Pass 169.9 Pass DS-55 128.4 Pass 125.6 Pass 165.5 Pass DS-56 141.5 Pass 150.0 Pass 164.4 Pass DS-57 123.2 Pass 143.9 Pass 170.2 Pass DS-58(Extrusion) 109.1 Pass ----- ----- 171.5 Pass DS-59lExtrusion) 137.1 Pass 168.3 Pass SMITH GARGNER, INC. Table 6 - HDPE-GM Seams JC Phase 6A MSWLF CDA Report Tables ,7190436A-6:25782A/,)A.!++,,-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill TABLE 6 3 of 3 Phase 6AConstruction SUMMARY OF MATERIAL RECORD TESTS HOPE GEOMEMBRANE SEAMS CQA Laboratory Destructive Seam Testing [Continued) Specified Value (See Note 21 > 91 (Hot Wedge) > 78 (Ex. Fillet) (See Note 21 > 91 (Hot Wedge) > 78 (Ex. Fillet) (See Note 21 > 120 (See Note 21 Minimum Value 109.1 Pass 117.1 Pass 158.7 Pass Maximum Value 153.9 Pass 155.3 Pass 185.0 Pass Average Value 132.8 Pass 135.7 Pass 167.4 Pass Quantity of Geomembrane Seams: Number of Production Seaming Days: 27,280 LF W-) 11 Days Notes: 1. Values listed for shear and peel strengths are for 4 out of 5 test specimens; the 51" specimen can be as low as 80 % of the specified values. 2. Regarding the locus -of -break patterns of the different seaming methods in shear and peel, refer to the project specifictions. SMITH GARDNER, INC. Table 6 - HDPE-GM Seams JC Phase 6A MSWLF CQA Report Tables ,7190436A-6:25782A/,)A.!++"-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill TABLE7 1 of 1 ,Has e 6A Construction SUMMARY OF MATERIAL CONTROL TESTS GEOTEXTILES Property Tensile Properties Puncture Resistance Trapezoidal Tear Strength Mass Per Unit Area Apparent Opening Size LAOS) Grab Strength Grab Elongation MD' CD1 MD CD MD CD Units lbs % Las its lbs U.S. Sieve Test Method ASTM D 4632 ASTM D 6241 ASTM D 4533 ASTM D 5261 ASTM D 4751 Required Test Frequency 100.000 fte or 1 per Lot 100.000 fte or 1 per Lot 100,000 fte or 1 per Lot 100,000 fte or 1 per Lot 100,000 fte or 1 per Lot Type GT-C Geotextile No. of Tests Required 1 1 1 1 1 NA No. of Tests Performed 1 1 1 1 1 ----- Specified Value > 205 > 50 > 900 > 80 > 16 ----- Sample I.D. Results Roll J1040846 (L21-061-004-0011 494 1 485 64 1 86 1,489 173 1 193 18 ----- Minimum Value 494 485 64 86 1,489 173 193 18 ----- Maximum Value 494 485 64 86 1,489 173 193 18 ----- Average Value 494 485 64 86 1,489 173 193 18 ----- Quantity of Type GT-C Geotextile Received: 67,500 SF 1 Lots Type GT-S Geotextile No. of Tests Required 1 1 1 1 NA 1 No, of Tests Performed 1 1 1 1 ----- 1 Specified Value > 160 > 50 > 410 > 55 ----- > 70 Sample I.D. Results ROLL T0001844201L21-061-005-001 183 1 225 54 1 55 583 55 1 74 ----- 120 Minimum Value 183 225 54 55 583 55 74 ----- 120 Maximum Value 183 225 54 55 583 55 74 ----- 120 Average Value 183 225 E 54 55 583 55 74 ----- 120 Quantity of Type GT-S Geotextile Received: 67,500 SF 1 Lots Notes: 1. MID = Machine Direction; CID = Cross Machine Direction SMITH GARDNER, INC. Table 7 - Geotextites JC Phase 6A MSW LF COA Report Tables ,7190436A-6:25782A/,)A.!++"-$-A&-& A#! 'A"' -#A$ #(-+(""%" Johnston County MSW Landfill TABLES 1 of 1 Phase 6A Construction SOMMARY OF MATERIAL CONTROL TESTS DRAINAGE GEOCOMPOSITE Property Geonet Thickness Geonet Density Ply Adhesion Transmissivity Side A Side B MD' MD Units inches g/cm3 Lbs m3/m/sec Test Method ASTM D 5199 ASTM D 1505 ASTM D 7005 ASTM D 4716 Required Test Frequency 100.000 ft2 or 1 per Lot 100.000 ft2 or 1 per Lot 100,000 ft2 or 1 per Lot 1 per Lot No. of Tests Required 8 8 8 2 No. of Tests Performed 7 (See Note 21 7 (See Note 21 7 (See Note 21 2 Specified Value > 0.25 > 0.94 > 2.0 (Typ.)/> 1.0 (Min. Avg.) > 4.9 x 10-4 Sample I.D. Results Roll 2331-588400(L20-120-003-001) 0.300 0.9566 3.17 4.19 6.33E-04 0112331-588440(L20-120-003-002) 0.315 0.9564 3.58 3.68 7.55E-04 o1L2331-588480(L20-120-003-0031 0.304 0.9555 2.20 5.18 ----- 0112331-588523(L20-120-003-004) 0.303 0.9565 2.61 2.68 ----- olL 2331-588565 (L20-120-003-0051 0.308 0.9571 2.79 3.31 ----- o112331-588605(L20-120-003-006) 0.306 0.9567 1.35 2.58 ----- 0112331-588645(L20-120-003-0071 0.309 0.9560 2.97 2.89 Minimum VaLue 0.300 0.9555 1.35 2.58 6.33E-04 Maximum Value 0.315 0.9571 3.58 5.18 7.55E-04 Average Value 0.306 0.9564 2.67 3.50 6.94E-04 Quantity of Drainage Geocomposite Received: 726,750 ft2 2 Lots Notes: 1. MD = Machine Direction 2. Actual frequency (Approx. 1 per 103,800 SF) was deemed acceptable given the test results obtained. SMITH GARONER, INC. Table 8 - Drainage Geocomposite JC Phase 6A MSWLF COA Report Tables Appendix A Reference Documents (Permits/Approvals) Construction Quality Assurance Report Johnston County MSW Landfill- Phase 6A Smithfield, North Carolina RGY COOPER Governor MICHAEL 5. REGAN Secretary MICHAEL SCOTT Director Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 1 of 16 NORTH CAROLINA Environmental Quality STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WASTE MANAGEMENT SOLID WASTE SECTION MUNICIPAL SOLID WASTE AND C&D LANDFILL FACILITY Permit No. 5103 JOHNSTON COUNTY is hereby issued a PERMIT TO CONSTRUCT 5103-MSWLF — JOHNSTON COUNTY MSW LANDFILL, PHASE 6 PERMIT TO OPERATE 5103-MSWLF - JOHNSTON COUNTY MSW LANDFILL, PHASE 4A 5103-CDLF — JOHNSTON COUNTY C&D LANDFILL, AREA 2, CELLS 1 AND 2 PERMIT FOR CLOSURE MSW PHASES 1 THROUGH 4 AND C&D AREA 1 Located at 680 County Home Road, west of Smithfield, in Johnston County, North Carolina in accordance with Article 9, Chapter 130A, of the General Statutes of North Carolina and all rules promulgated thereunder and subject to the conditions set forth in this permit. The legal description of the site is identified on the deeds recorded for this property listed in Attachment No. 1 of this permit. Digitally signed by Sherri Stanley Date: 2020.05.08 11:53:13-04'00' Sherri C. Stanley, Supervisor Permitting Branch, Solid Waste Section Division of Waste Management D1E Q 0. W 111nNR e! FAYeI.I�Y �� North Carolina Department of Environmental Quality I Division of Waste Management 217 West Jones Street 1 1646 Mai[ Service Center 1 Ratetgh, North Carolina 27699-1646 919.707,8200 Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 2 of 16 ATTACHMENT 1 GENERAL PERMIT CONDITIONS AND INFORMATION Permit to Operate Data Table Permit Issuance Expiration* 5103-MSWLF May 8, 2020 August 6, 2057 5103-CDLF May 8, 2020 August 6, 2057 *Life -of -site pursuant to NCGS 130A-294 (a2) is when the fill operation reaches final permitted elevations, or no later than 60 years from August 6, 1997, which is the initial operation of the lined units. PART I GENERAL FACILITY This permit is issued by the North Carolina Department of Environmental Quality, Division of Waste Management, Solid Waste Section (Section). In accordance with North Carolina Solid Waste Management Rule 15A NCAC 13B .0201(d), a solid waste management facility permit shall have two parts: a permit approval to construct and a permit approval to operate. The permit approval to construct must be implemented in accordance with Attachment 2 of this permit. The permit approval to operate must be implemented in accordance with Attachment 3 of this permit. 2. The persons to whom this permit is issued ("permittee") are the owners and operators of the solid waste management facility. 3. The Permit to Construct and Operate dated May 27, 2015, was recorded with the Johnston County Register of Deeds on June 4, 2015. The document is recorded in Deed Book 4607, pages 81-100. The recordation can also be viewed on the Section's online documents database. 4. When this property is sold, leased, conveyed, or transferred in any manner, the deed or other instrument of transfer must contain in the description section, in no smaller type than that used in the body of the deed or instrument, a statement that the property has been used as a sanitary landfill and a reference by book and page to the recordation of the permit. 5. By beginning construction or receiving waste at this facility the permittee shall be considered to have accepted the terms and conditions of this permit. 6. Construction and operation of this solid waste management facility must be in accordance with the Solid Waste Management Rules, 15A NCAC 13B, Article 9 of Chapter 130A of the North Carolina General Statutes (NCGS 130A-290, et seq.), the conditions contained in this permit, and the approved plan. Should the approved plan and the rules conflict, the Solid Waste Management Rules shall take precedence unless specifically addressed by permit condition. Failure to comply may result in compliance action or permit revocation. 7. This permit is issued based on the documents submitted in support of the application for permitting the facility identified in Attachment 1, "List of Documents for Approved Plan," which constitutes the approved plan for the facility. Where discrepancies exist, the most recent submittals and the conditions of permit shall govern. 8. This permit may be transferred only with the approval of the Section, through the issuance of a new or substantially amended permit in accordance with applicable statutes and rules. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 3 of 16 9. In accordance with NCGS 130A-295.2(g), the permittee must notify the Section thirty (30) days prior to any significant change in the identity or business structure of either the owner or the operator, including but not limited to, a proposed transfer of ownership of the facility or a change in the parent company of the owner or operator of the facility. 10. The permittee is responsible for obtaining all permits and approvals necessary for the development of this project including approval from appropriate agencies for sedimentation and erosion control, and a General or Individual National Pollutant Discharge Elimination System (NPDES) Stormwater Discharge Permit. Issuance of this permit does not remove the permittee's responsibilities for compliance with any other local, state or federal rule, regulation or statute. Properties Approved for the Solid Waste Management Facility Johnston County, N.C. Register of Deeds Book Page Grantee (sold to) Acres 763 525 Johnston County 86.6 1228 652 Johnston County 248.75 1215 747 Johnston County 63 E-3 1 Johnston County —29 2109 599 Johnston County 14.02 Plat Book 81 219 Johnston County Landfill Recombination Survey Total Site Acreage: 529 acres Johnston County Parcel No. 15I08028. The actual disposal area consists of approximately 226.4 acres, which includes Phases 1 through 10, both MSW and C&D (construction and demolition debris) landfill units. Deeds have not been located for all parcels of the landfill property. Filled and Current Landfill Units Latitude and Longitude, ap rox. center of the Phase(s) Phases 1 and 2 35.514450,-78.426652 Phases 3, 4, 4A, and C&D Area 1 35.518818,-78.427060 C&D Area 2 35.517529,-78.423941 Phase 5 35.515484,-78.432306 Phase 6 35.515074,-78.434195 Permitting History Issuance Date Doc/File ID Permit No. 51-01 PTO Phase 4 March 13, 1984 Permit No. 51-01 PTO vertical expansion October 25, 1990 Permit No. 51-01 PTO vertical expansion July 30, 1991 Permit No. 51-01 PTO C&D Phase 4A (C&D Area 1) December 22, 1998 Permit No. 51-01 PTO C&D Phase 4A (C&D Area 1) January 22, 2002 14472 Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 4 of 16 Permit No. 51-02 PTC Phase 5 December 22, 1995 Permit No. 51-02 PTO Phase 5 August 6, 1997 Permit No. 51-02 PTO Phase 5 leachate recirculation March 27, 2001 Permit No. 51-03 PTC MSW Phase 4A Cells 1 and 2 and C&D Phase 4A (C&D Area 1) April 3, 2002 14584 PTO Phase 5 and C&D Phase 4A vertical expansion (C&D Area 1) April 3, 2002 14584 PTO MSW Phase 4A Cell 1 and C&D Phase 4A (C&D Area 1) December 20, 2002 PTO MSW Phase 4A Cell 2 and C&D Area 1 August 1, 2005 14587 PTC C&D Area 2, Cell 1 August 31, 2006 14588 PTO C&D Area 2, Cell 1 August 24, 2007 2934 PTC MSW Phase 4A, Cell 3 January 16, 2009 6088 PTO MSW Phase 4A, Cell 3, fill sequence 1 September 28, 2009 8483 PTO MSW Phase 4A, permit renewal May 27, 2015 24159 PTC C&D Area 2, Cell 2, and PTO permit renewal May 27, 2015 24159 PTO C&D Area 2, Cells 1 and 2 May 26, 2017 27742 PTO MSW Phase 4A Vertical Expansion May 8, 2020 1389224 PTC MSW Phase 6 May 8, 2020 1389224 In 1973, landfill operations began in Phase 1 on this property. Phases 2, 3, and 4 began operating in 1974, 1979, and 1984, respectively. In 1984, landfill permit number 51-01 was issued for the facility. Phases 1 through 4 were not constructed with a liner below the waste. Acreage and volume information on the unlined Phases of the landfill are following: Unlined Landfill Unit Area (acres) Gross Capacity (cubic yards) Phases 1 and 2 22.1 732,363 Phase 3 25.4 1,174,139 Phase 4 37.3 1,631,731 Total Unlined 84.8 3,538,233 2. In 1997, landfill operations began in Phase 5, which was constructed with a Subtitle D liner. Phase 5 was issued permit number 51-02. 3. In 1998, a separate C&D landfill cell began operating on top of closed MSW Phase 4. This area was called C&D Phase 4A at that time, but was later named C&D Area 1. 4. In 2002, permit number 5103 was issued. This permit approved operation of MSW Phase 4A (Cell 1), which is a lined landfill cell between closed MSW Phases 3 and 4. Phase 4A also piggybacks the side slopes over closed Phases 3 and 4. This permit issuance incorporated previous permits 51- 01 and 51-02 into one permit, now called permit number 51-03. In 2005, landfill operations began in MSW Phase 4A, Cell 2. A vertical expansion was approved for C&D disposal in C&D Area 1 on top of closed Phase 4. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 5 of 16 6. In 2007, C&D Area 2 was approved and began operating. Part of this area (Cell 1) is adjacent and east of closed MSW Phase 3, and part of Area 2 (Cell 2) piggybacks the side slope of closed Phase 3. C&D Area 2 is designed with a geomembrane liner and leachate collection system. 7. In 2015, the property boundary was increased to include the yard waste management area and additional buffer east of C&D Area 2. Property parcels were combined. 8. In 2020, a vertical expansion was approved for Phase 4A, increasing the final elevation of Phase 4A by 13 feet to a final height of 345 msl. PART II: LIST OF DOCUMENTS FOR APPROVED PLAN Note — Documents referenced in this permit (e.g., File ID 1389226) can be viewed online at the NC Solid Waste Section website in the Documents database. Johnston County Subtitle D Landfill Phase 5, Permit 51-02. Construction Quality Assurance (CQA), As -Built Certification, and Revised Engineering Plan. Prepared by McKim & Creed Engineers, P.A., Cary, NC. March 1997. 3 Volumes and drawings. 2. Letter Grimes to Fry. Requesting approval of Alternative Daily Cover, Tarpomatic. July 27, 1998. Doc ID 14565. 3. Johnston County C&D Landfill Vertical Expansion. Prepared by G.N. Richardson & Associates, Inc., Raleigh, NC. December 1998. 4. Cap Closure Certification Letter for the Johnston County Landfill, Dec. 1998. 5. Permit to Construct Application. Johnston County MSW Landfill -Phase 4A. Prepared by G.N. Richardson & Associates, Inc., Raleigh, NC. April 2000. Revised December 2001. 6. Permit Modification Application. Johnston County C&D Landfill Vertical Expansion. Prepared by G.N. Richardson & Associates, Inc., Raleigh, NC. January 2002. (Modification, Area 4A, Permit No. 51-01). 7. Division of Water Quality Permit No. WQ0019631, Johnston County, Conjunctive Use at Johnston County Landfill, Reclaimed Water Utilization System. March 27, 2002. Modified June 13, 2003, December 20, 2004, May 5, 2006, and November 16, 2006. 8. CQA Report, Johnston County MSW Landfill, Phase 4A, Cell 1. Prepared by G.N. Richardson & Associates, Raleigh, NC. December 2002. 9. Permit Modification Application. Johnston County C&D Landfill Vertical Expansion. Prepared by G.N. Richardson & Associates, Inc., Raleigh, NC. December 2003, Revised August 2005. 10. CQA Report, Johnston County MSW Landfill, Phase 4A, Cell 2. Prepared by G.N. Richardson & Associates, Raleigh, NC. July 2005. 11. Permit to Construct Application. Johnston County C&D Landfill, Area 2. Prepared b: G.N. Richardson & Associates, Inc., Raleigh, NC. October 2005. Revised May 2006. 12. CQA Report, Johnston County C&D Landfill, Area 2, Cell 1. Prepared by Richardson Smith Gardner & Associates, Raleigh, NC. June 2007. Doc ID 2769. 13. Johnston County Landfill Equalization Facility Drawings. Prepared by Dewberry & Davis, Inc., Raleigh, NC. October 2007. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 6 of 16 14. Letter from Pieter Scheer, Richardson, Smith, Gardner & Associates, to Donna Wilson, NC DENR, November 6, 2007. Revised Permit Modification Request, Modification of Existing Leachate Storage Pond for use as Equalization Basin. Doc ID 3348. 15. Permit Amendment Application, Johnston County MSW Landfill, Phase 4A, Cell 3. Prepared by Richardson Smith Gardner & Associates, Raleigh, NC. June 2007, amended January 2009. Doc ID 6615. 16. Closure and Post -Closure Plans and Financial Assurance for Continued Operation of the C&D Landfill (0547 Requirements). Prepared by Richardson Smith Gardner & Associates, Raleigh, NC. June 2008, amended January 2009. Doc ID 8491. 17. Seep Repair and Miscellaneous Site Improvement, Johnston County MSW Landfill. Prepared by Richardson Smith Gardner & Associates, Raleigh, NC. April 3, 2009. Doc ID 8551. 18. CQA Report, Johnston County MSW Landfill, Phase 4A, Cell 3. Prepared by G.N. Richardson & Associates, Raleigh, NC. July 2009, revised August 2009. Doc ID 8084. 19. Closure CQA for C&D Area 1. Prepared by Richardson Smith Gardner, Raleigh, NC. July 2011. Doc ID 21740. 20. Construction Documentation, Landfill Gas Collection System. Prepared by SCS Engineers, PC, Charlotte, NC. November 2011, revised December 2011. Doc ID 16068. 21. Permit Amendment and Permit to Construct Application, Area 2, Cell 2, Johnston County C&D Landfill. Prepared by Smith Gardner, Inc., Raleigh, NC. Feb. 2013, amended through May 2015. Doc ID 24160 and 24161. 22. Permit Amendment Application, Johnston County MSW Landfill, Phase 4A, Cell 3. Prepared by Smith Gardner, Inc., Raleigh, NC. April 2014, amended through May 2015. Doc ID 24165 and 24166. 23. CQA Report, Johnston County C&D Landfill, Area 2 Cell 2. Prepared by Smith Gardner, Raleigh, NC. April 2017. Doc ID 27741. 24. Application for Permit to Construct Application, MSW Phase 6 and Application for Vertical Expansion of MSW Phase 4A. Prepared by Smith Gardner, Raleigh, NC. April 2019, revised through May 2020. Main application - File ID 1389226. Sedimentation and Erosion Control - File ID 1389798. Design Hydrogeologic Report - File IDs 1405296 and 1405299. Water Quality Monitoring Plan - File ID 1390438. Landfill Gas Monitoring Plan - File ID 1377148. - End of Section - ATTACHMENT 2 CONDITIONS OF PERMIT TO CONSTRUCT This permit approves the construction of MSW unit Phase 6. The initial, substantial, construction authorized by this Permit to Construct must commence within 18 months from the issuance date of this permit (May 8, 2020). If substantial construction does not begin within 18 months from the issuance date of this permit, then the permit to construct shall expire. Substantial construction includes, but is not limited to, issuance of construction contracts, Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 7 of 16 mobilization of equipment onsite, and construction activities including installation of sedimentation and erosion control structures. The permittee may reapply for the permit to construct prior to the expiration date. The re -application will be subject to the statutes and rules in effect on that date and may be subject to additional fees. 2. The permittee must conduct a preconstruction meeting at the facility prior to initiating construction of any unit/cell and must notify the Section at least 10 days prior to the meeting. Construction of all solid waste management units within this facility must be in accordance with the approved plans and only for those phases of development approved for construction as described in the list of approved documents in Attachment 1. 4. Modifications or revisions of the approved documents or changes during construction of any landfill unit/cell require approval by the Section, and may constitute a permit modification. Construction of groundwater monitoring wells and landfill gas monitoring wells, and abandonment of groundwater and landfill gas wells, shall be in accordance with the conditions of Attachment 3, Monitoring and Reporting Conditions. 6. Any modifications in sedimentation and erosion control activities require approval by the Land Quality Section. The Section must be notified of any sedimentation and erosion control modifications. 7. Burning of land -clearing debris generated on -site as a result of construction activities requires approval by the Section prior to initiating the burn. The facility must also ensure the activity is in compliance with all air pollution and open burning laws, regulations, and ordinances. In areas with streams and/or wetlands, the permittee shall provide to the Section an electronic (pdf) copy of the 404/401 approval from the U.S. Army Corps of Engineers and/or the NCDEQ Division of Water Resources, prior to construction in the affected areas. 9. MSW landfill units identified as future phases (Phases 7 through 10) are deemed suitable for preparation of a permit application in accordance with Solid Waste Rule 15A NCAC 13B .1618(a)(1). An application for a permit approval to construct for each phase, prepared in accordance with applicable statutes and rules in effect on that date, must be submitted to the Section for approval. 10. The following requirements must be met prior to operation of any newly constructed area in Phase 6: a. Abandonment records for the monitoring wells within the Phase 6 footprint, MW-5-2, MW- 5-3, and MW-5-4, shall be submitted to the Section. b. Construction Quality Assurance (CQA) documentation and a certification by the project engineer that the unit was built in accordance with approved plans and the conditions of the permit must be submitted to the Section for review and approval. c. The edge of waste footprint must be identified with permanent physical markers. d. The Permittee must contact the regional environmental specialist and permitting engineer to determine whether the Section chooses to hold a pre -operative meeting with key landfill personnel and representatives of the Section. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 8 of 16 e. Documentation of financial assurance mechanisms must be submitted to the Section. The financial assurance amount must include closure and post -closure costs including the new area to receive the permit to operate. f. The Permittee must obtain a permit to operate for the unit from the Section. g. Groundwater monitoring wells MW-6-1 and MW-6-2 must be installed, developed, and added to the routine monitoring schedule. New site plan drawings showing the location and identification of the new and existing wells must be submitted to the Section. - End of Section — ATTACHMENT 3 CONDITIONS OF OPERATING PERMIT PART I: GENERAL FACILITY CONDITIONS In accordance with 130A-294 (a2), this permit is for the life -of -site. Life -of -site ends when the facility reaches its final permitted elevations but no later than August 6, 2057. Sixty years from the initial approval to receive waste of the lined units is August 6, 2057. Continued operation after this date will require a permit renewal in accordance with rules and requirements at that time. 2. This facility is permitted to receive non -hazardous solid waste generated within the State of North Carolina, consistent with local government waste management plans(s) and with local government approval and as defined in G.S. 130A-290(a) (35), except where prohibited by the North Carolina General Statutes Article 9 of Chapter 130A, and the rules adopted by the Commission for Health Services. 3. The following must not be accepted for disposal: hazardous waste, yard trash, liquid wastes, regulated medical waste, sharps not properly packaged, PCB waste as defined in 40 CFR 761, and wastes banned from disposal in North Carolina by G.S. 130A-309.10(f). 4. The annual disposal rate for the MSW and C&D units must be no more than 401,000 tons per year, for years 2016-2025, and no more than 425,000 tons per year, for years 2026-2035. No more than 156,000 tons per year shall be waste generated outside of Johnston County, in accordance with the local government approval issued for this facility, dated January 3, 2006. Reference File ID 1390279. 5. The permittee must not knowingly dispose of solid waste that is generated within the boundaries of a unit of local government that by ordinance: a. Prohibits generators or collectors of solid waste from disposing of that type or form of solid waste. b. Requires generators or collectors of solid waste to recycle that type or form of solid waste. 6. The facility operator must complete an approved operator training course in compliance with G.S. 130A-309.25. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 9 of 16 a. A responsible individual certified in landfill operations must be on -site during all operating hours of the facility while open for public use to ensure compliance with operational requirements. b. All pertinent landfill -operating personnel must receive training and supervision necessary to properly operate the landfill units in accordance with G.S. 130A-309.25 and addressed by memorandum dated November 29, 2000. 7. The facility must be adequately secured by means of gates, chains, berms, fences, or other security measures approved by the Section to prevent unauthorized entry. Signs must be posted at the entrance to the facility that state types of waste that can and cannot be received at the facility, the hours of operation, the permit number(s), contact name, telephone number, and other pertinent information. Traffic signs or markers must be provided as necessary to promote an orderly traffic pattern to and from the operating areas and to maintain efficient operating conditions. 9. Interior roadways must be of all-weather construction and maintained in good condition. Fire lanes must be maintained and passable at all times. Dimensions of the fire lanes must be coordinated with the Fire Marshall having jurisdiction over the site. 10. Permanent physical markers must be maintained to identify the edge of the approved waste disposal boundary. Boundaries must be marked for all active and inactive/filled landfill units. 11. The permittee must actively employ a screening program at the facility for detecting and preventing the disposal of excluded or unauthorized waste. At a minimum, the program must include: a. Random inspections of incoming loads or other comparable procedures. b. Records of any inspections. c. Training of personnel to recognize hazardous, liquid, and other excluded waste types. d. Development of a contingency plan to properly manage any identified hazardous, liquid, or other excluded or unauthorized wastes. The plan must address identification, removal, storage, and final disposition of these wastes. 12. In accordance with 130A-295.6, this landfill may use alternative daily cover (ADC) that has been previously approved at another sanitary landfill in North Carolina. The Section maintains a list of approved ADC and its appropriate use, which may be referred to, but is not required to be, in determining ADC types and uses. The owner must follow the implementation notice and notification requirements of the guidance document Approved Alternative Daily Cover Materials for Use at Sanitary Landfills. a. The use of ADC that does not meet the condition above requires approval of the Section prior to implementation. Requests for ADC approval must include a plan detailing the comprehensive use and a demonstration of the effectiveness of the alternative cover, developed according to Section guidelines. Plans that are approved by the Section will be added to the list of approved documents in Attachment 1. b. The use of tarps and auto shredder fluff are approved as alternate cover. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 10 of 16 c. The permittee must maintain records for all solid waste materials accepted and used as ADC. The records must include: the date of receipt, weight of material, general description of the material, identity of the generator and transporter, and county of origin. Records must be made available to the Section upon request. d. The application of ADC materials in excess of normal application of daily cover of the material shall constitute disposal. 13. The leachate collection system must be cleaned and maintained in accordance with 15A NCAC 13B.1626(12)(a), NCGS 130A-295.6 (h)(3), and the approved plan. Remote camera inspections of leachate lines must be conducted upon completion of construction and at least once every five years. Cleaning of leachate collection lines must be conducted as necessary for proper functioning and to address buildup of leachate on the liner. Any blockages encountered must be repaired and reported to the Section. Documentation of leachate line inspections, cleaning and maintenance must be included in the operating record of the facility and provided to the Section upon request. 14. The owner or operator must maintain a record of the amount of solid waste received at the landfill units, compiled monthly. Scales must be used to weigh the amount of waste received. 15. Open burning of solid waste is prohibited. Fires must be reported to the Regional Waste Management Specialist within 24 hours of the occurrence with a written notification to be submitted within 15 calendar days of the occurrence. 16. Burning of land -clearing debris generated on -site, as a result of construction activities, requires approval by the Section prior to initiating the burn. The facility must also ensure the activity is in compliance with all air pollution and open burning laws, regulations, and ordinances. 17. Financial assurance for the MSW and C&D landfill units, as required by state rules and statutes, must be continuously maintained for the duration of the facility in accordance with applicable rules and statutes. Closure and Post -Closure cost estimates and financial instruments must be updated annually pursuant to 15A NCAC 13B .1628. 18. Copies of this permit, the approved plans, and all records required to be maintained in the operating record by the permittee must be maintained at the facility, unless otherwise approved by the Section, and made available to the Section upon request. Monitoring and Reporting Conditions 19. Groundwater, surface water, and landfill gas monitoring must be established and monitored as identified in the approved monitoring plans. The permittee must obtain approval from the Section for the design, installation, development or abandonment of any groundwater monitoring well or landfill gas monitoring well. Any modification to the approved monitoring plans must be submitted to the Section Hydrogeologist for review. 20. A licensed geologist must be present to supervise the installation of any new groundwater monitoring wells and landfill gas monitoring wells. 21. Within thirty (30) days of the completed construction of each new groundwater monitoring well and landfill gas monitoring well, the well construction record (GW-1 form), well schematic, boring log, field log and notes, and description of well development activities must be submitted Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 11 of 16 to the Section. Within thirty (30) days of the completed permanent abandonments of a groundwater monitoring well and landfill gas monitoring well, the well abandonment record (GW-30 form) and any additional information included in the abandonment record must be submitted to the Section. 22. Each groundwater monitoring well and landfill gas well must be surveyed for location and elevation. Each groundwater monitoring well and landfill gas monitoring well must have an identification plate permanently attached to the well, in accordance with 15A NCAC 2C .0108. 23. Groundwater, surface water, and landfill gas monitoring shall be conducted in accordance with the approved monitoring plans. Any modification to the approved monitoring plans must be submitted to the Section Hydrogeologist for review. 24. Groundwater monitoring wells and surface water sampling locations must be sampled for the constituents listed in the approved monitoring plan, at least semi-annually, according to the approved plan and the current policies and guidelines of the Section in effect at the time of sampling. Groundwater monitoring for the C&D units must be conducted in accordance with 15A NCAC 13B .1630 through .1633. Landfill gas monitoring must be conducted quarterly in accordance with applicable Rules and the approved landfill gas monitoring plan. Assessment monitoring must continue in accordance with the Solid Waste Management Rules and any additional requirements set forth by the Section. 25. The four independent samples which comprise the initial baseline sampling event must be collected from each groundwater monitoring well and the report must be submitted to the Section within six months after issuance of the Permit to Operate. 26. Untreated leachate must be sampled and analyzed at least semi-annually concurrently with the water quality monitoring. The leachate must be analyzed for all Appendix I constituents, pH, specific conductance, BOD, COD, phosphate, nitrate, and sulfate. Test results must be submitted to the Section along with the water quality monitoring results. In the event leachate is recirculated, additional leachate sampling may be required. 27. Reports of the analytical data for each water quality monitoring event must be submitted to the Section within 120 days of the sample collection date. The permittee must provide a potentiometric surface map for the current sampling event that shows groundwater and surface water sampling locations, and all new, existing, and abandoned groundwater well locations. Analytical data must be submitted in a manner prescribed by the Section. 28. A readily accessible unobstructed path must be maintained so that monitoring wells and surface water sampling locations are accessible using four-wheel drive vehicles. 29. All landfill gas monitoring must be conducted by properly trained personnel. Landfill gas monitoring must include interior monitoring of onsite buildings. Landfill gas monitoring results must be recorded on forms provided by the Section and be maintained in the facility's operating record. 30. Documentation of well completion, development details, repair, abandonment, and all other pertinent activities associated with each monitoring well and all sampling activities associated with each groundwater well, landfill gas monitoring well, surface water location, and leachate Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 12 of 16 sampling location must be maintained in the facility operating record. Records of all monitoring events and analytical data must be kept as part of the operating record. Erosion and Sedimentation Control Requirements 31. All earth disturbing and sedimentation and erosion control activities must be conducted in accordance with the Sedimentation Control Act N.C.G.S. 113A-50, et seq., and rules promulgated under 15A NCAC 4, and must be consistent with any other local, state, or federal requirements. All required sedimentation and erosion control measures must be installed and operable to mitigate excessive on -site erosion and to prevent silt from leaving the area of the landfill unit during the service life of the facility. 32. Modifications to the approved sedimentation and erosion control activities require approval by the North Carolina Land Quality Section. The Section must be notified of any sedimentation and erosion control plan modifications. 33. Facility construction, operations or practices must not cause or result in a discharge of pollution, dredged material, and/or fill material into waters of the state in violation of the requirements under Sections 402 and 404 of the Clean Water Act, as amended. PART II: MUNICIPAL SOLID WASTE LANDFILL SPECIFIC CONDITIONS 34. This permit approves the vertical expansion of Phase 4A, the continued operation of Phase 4A, as well as the onsite environmental management and protection facilities as described in the approved plans. Phase 4A is a lined MSW unit that piggy -backs the unlined MSW units 3 and 4. 35. The following table lists the dimensions and details for the lined MSW landfill units, both existing and planned. Gross capacity is the measured volume between the bottom of waste and the top of final cover. Lined (Subtitle D) MSW Units Acres Gross Capacity (cubic yards) Approximate Service Years' Phase 5 19.2 1,087,199 Inactive Phase 4A2 29.4 3,443,753 2.9 — 3.8 Phase 63 19.7 2,396,265 8 - 12 Phase 74 23.4 2,841,196 9.5 — 14.2 Phase 8 19.8 3,122,359 10.4 —15.6 Phase 9 23.1 1,558,088 5.2 — 7.8 Phase 10 18 4,360,867 13.2 —19.8 Total (Lined) 152.6 18,809,727 49.2 — 73.2 'Life expectancy as calculated June 2018. 2Phase 4A capacity includes vertical expansion approved May 2020. PPhase 6 is approved for construction but not yet approved for disposal. 4Applications must be submitted to the Section for review and approval prior to the construction and operation of Phases 7 through 10. 36. Adjustments to the landfill capacity that would result in a total capacity of 21,890,000 cubic yards or more would require a substantial amendment to the permit. This total capacity consists Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 13 of 16 of the capacity of the lined MSW and C&D landfill units: MSW Phases 4A, and 5 through 10, and C&D Areas 1 and 2. 37. The facility is permitted to co -dispose of wastewater treatment sludge generated within the facility's approved service area, and subject to the terms and procedures of the approved plan. 38. Closure or partial closure of any MSWLF unit must be in accordance with the Closure Plans described in the approved plans and 15A NCAC 13B .1629. Final Closure Plans must be submitted to the Division at least 90 days prior to implementation. 39. The use of leachate recirculation as a leachate management tool requires approval by the Section prior to implementation. Requests for leachate recirculation approval must include a comprehensive management plan developed according to Section guidelines. Plans which are approved by the Section will be included in the list of approved documents in Attachment 1. 40. On or before August 1 annually, the Permittee must submit an annual facility report to the Section, on forms prescribed by the Section. a. The reporting period shall be for the previous year beginning July 1 and ending June 30. b. The annual report must list the amount of waste received and landfilled in tons and be compiled: i. On a monthly basis. ii. By county, city or transfer station of origin. iii. By specific waste type. iv. By disposal location within the facility. v. By diversion to alternative management facilities. c. A measurement of volume utilized in the MSW cells must be performed during the second quarter of the calendar year. The date and volumes, in cubic yards, must be included in the report. d. The amount of MSW waste, in tons from scale records, disposed in landfill cells since August 6, 1997 through the date of the annual volume survey must be included in the report. e. The completed report must be forwarded to the Regional Waste Management Specialist for the facility by the date due on the prescribed annual facility report form. f. A copy of the completed report must be forwarded to each county manager for each county from which waste was received at the facility. Documentation that a copy of the report has been forwarded to the county managers must be sent to the Regional Waste Management Specialist by the date due on the prescribed annual facility report form. PART III: CONSTRUCTION AND DEMOLITION DEBRIS UNIT SPECIFIC CONDITIONS 41. This permit approves the continued operation of Area 2 for the disposal of C&D waste. The following table lists the dimensions and details for the C&D landfill units, both existing and planned. Gross capacity is defined as the volume measured from the bottom of waste through the top of final cover. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 14 of 16 C&D Units Acres Gross Capacity (cubic yards) Approximate Service Years' Area 1 16.2 614,472 Closed Area 2 15.8 873,334 1.6 — 2.7 Total 32.0 1,487,806 1.6 — 2.7 'Life expectancy as calculated June 2018. 42. The C&DLF unit is permitted to receive construction and demolition waste and land clearing and inert debris as follows: a. C&D solid waste as defined in 15A NCAC 13B, Rule .0532(8) means solid waste generated solely from the construction, remodeling, repair, or demolition operations on pavement and buildings or structures. C&D waste does not include municipal and industrial wastes that may be generated by the on -going operations at buildings or structures. b. Inert debris as defined in NCGS 130A-290 (a) (14) means solid waste that consists solely of material such as concrete, brick, concrete block, uncontaminated soil, rock, and gravel. c. Land Clearing Waste as defined in G.S. 13OA-290 (a)(15) means solid waste which is generated solely from land clearing activities, limited to stumps, trees, limbs, brush, grass, and other naturally occurring vegetative material. d. Asphalt in accordance with G.S. §130A-294(m). 43. The C&DLF unit must not accept wastes excluded for disposal as specified in 15A NCAC 13B, Rule .0542(e). 44. The leachate collection system within the C&D units must be operated to remove leachate from the landfill in such a way as to ensure that the leachate head on the liner does not exceed one foot under normal operating conditions. 45. The C&D units must be closed in accordance with the approved plan and the requirements of the Section at the time of closure. A final closure plan must be submitted for review at least ninety (90) days prior to closure of any phase of the C&D landfill units. 46. On or before August 1 annually, the Permittee must submit an annual facility report to the Section, on forms prescribed by the Section. a. The reporting period shall be for the previous year beginning July 1 and ending June 30. b. The annual report must list the amount of waste received and landfilled in tons and be compiled: i. On a monthly basis. ii. By county, city or transfer station of origin. iii. By specific waste type. iv. By disposal location within the facility. v. By diversion to alternative management facilities. c. A measurement of volume utilized in the C&D cells must be performed during the second quarter of the calendar year. The date and volumes, in cubic yards, must be included in the report. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 15 of 16 d. The amount of C&D waste, in tons from scale records, disposed in landfill cells since August 24, 2007, through the date of the annual volume survey must be included in the report. e. The completed report must be forwarded to the Regional Waste Management Specialist for the facility by the date due on the prescribed annual facility report form. f. A copy of the completed report must be forwarded to each county manager for each county from which waste was received at the facility. Documentation that a copy of the report has been forwarded to the county managers must be sent to the Regional Waste Management Specialist by the date due on the prescribed annual facility report form. PART IV: POST -CLOSURE SPECIFIC CONDITIONS FOR THE UNLINED MSW LANDFILL UNITS AND CONSTRUCTION AND DEMOLITION DEBRIS UNIT 47. Unlined MSW landfill units Phase 1 and 2 were closed prior to October 1993, and unlined MSW landfill units Phase 3 and 4 were closed in 1999. An enhanced closure cap was also installed over Phases 1 and 2 in 1999. C&D landfill Area 1 is located on top of unlined MSW Phase 4, and was closed in 2011. 48. The integrity and effectiveness of the cap system must be maintained. Maintenance and repairs to the cover must be conducted as necessary to correct the effects of settlement, subsidence, erosion, or other events, and to prevent surface water from impounding over waste, and run-on and run-off from eroding or otherwise damaging the cap system. Mowing and removal of trees on the final cover is required at least once per year. 49. Any post -closure use of the property, including but not limited to, residential, commercial, industrial, agricultural, or recreational use, is subject to review and approval by the Section and must not disturb the integrity of the cap system, or the function of the monitoring systems. The Section may approve any other disturbance if the owner or operator demonstrates that disturbance of the cap system, including any removal of waste, will not increase the potential threat to human health or the environment. 50. The permittee must conduct groundwater and surface water sampling in accordance with the approved groundwater monitoring plan, corrective action program, and the N.C. Solid Waste Management Rules (1600 et seq.). 51. Permanent physical markers must be maintained to identify the edge of the waste disposal boundary. PART V: MISCELLANEOUS SOLID WASTE MANAGEMENT UNIT SPECIFIC CONDITIONS Yard Waste Processing and Storage Unit 52. Yard waste must be managed within the approved boundaries, reference Doc ID 27823. Management of yard waste in areas of the facility other than that referenced above, require written approval of the Section. 53. The yard waste processing area must be operated in accordance with the Rules for Solid Waste Compost Facilities, 15A NCAC 13B .1401 et seq, as applicable, and the approved plan, reference File ID 1389226, pdf page 426. Facility Permit No: 5103 Johnston County MSW & C&D Landfill May 8, 2020 File ID: 1389224 Page 16 of 16 Recycling Collection Areas 54. Recycling areas, including the white goods, battery, waste oil, and tire collection areas, must be located in areas of the facility as shown on Drawing S 1, Doc ID 1389226, pdf page 645, and operated in accordance with the approved plans. The Section must be notified of any planned changes to the locations of these processing or collection areas. 55. Wastes and recyclables must be stored in reasonably sized areas or piles with adequate fire breaks and lanes. 56. Surface water must be diverted from all operational and storage areas to prevent standing water. 57. White goods containing refrigerants must be stored upright and handled in a manner to prevent leakage. Refrigerants must be properly removed by trained personnel prior to removal off -site for recycling. - End of Permit Conditions — ROY COOPER Gfive/ tvr MICHAEL S. REGAN Sc(retar). BRIAN WRENN .4c1Jnq Uirr: for NORTH CAROLINA Environmental Quality May 18, 2020 LETTER OF APPROVAL Johnston County ATTN: Rick J. Hester, County Manager 207 E. Johnston Street Smithfield, NC 27577 RE: Project Name: Johnston County MSW Landfill — Phase 6 Project ID: JOHNS-2020-024 Approved Acres: 38.9 (not previously approved) County: JOHNSTON City: Smithfield Address: County Home Road River Basin: Neuse, Stream Classification: Other Submitted By: Smith + Gardner Engineers Date Received by LQS: May 14, 2020 Plan Type: Revised Dear Mr. Hester: The subject erosion and sedimentation control plan has been approved. The enclosed Certificate of Approval must be posted at the job site. This plan approval shall expire three (3) years following the date of approval, if no land -disturbing activity has been undertaken, as is required by Title 15A NCAC 413.0129. As of April 1, 2019, all new construction activities are required to complete and submit an electronic Notice of Intent (eNOI) form requesting a Certificate of Coverage (COC) under the NCG010000 Construction General Permit. After the form is reviewed and found to be complete, you will receive a link with payment instructions for the $100 annual permit fee. After the fee is received, you will receive the COC via email. You MUST obtain the COC prior to commencement of any land disturbing; activity. The eNOI form may be accessed at deq.nc.gov/NCG01. Please direct questions about the eNOI form to Annette Lucas at Annette. Lucas@ncdenngov or Paul Clark at Paul.Clark Damcdenr.gov. If the owner`operator of this project changes in the future, the new responsible party is required to apply for hislher own COC. Title 15A NCAC 4B .011$(a) and the NCGO1 permit require that the following documentation be kept on file at the job site: 1. The approved E&SC plan as well as any approved deviation. 2. The NCGO1 permit and the COC, once it is received. 3. Records of inspections made during the previous 12 months. r�,D' EQNo)� tit Carolina Vcpar intent of Environmental Qunli:}' Vivl.;!on of Cncryy. hllncral and Lind i r,aur. cs — 919.791.,Uoo Ro1v:9 t Rr�1ional Oliirr Ih23 Ala ISCrv;ry C�rntvr :i800IMrrc1t ThM— R.rlciult. Nnrth C:arrdirta 271ot1`+ Letter of Approval Johnston County May 18, 2020 Page 2 of 2 Also, this letter gives the notice required by G.S. 113A-61.1(a) of our right of periodic inspection to insure compliance with the approved plan. Title 15A NCAC 413.0118(a) requires that a copy of the approved erosion control plan be on file at the job site. Also, this letter gives the notice required by G.S. 113A-61.1(a) of our right of periodic inspection to insure compliance with the approved plan. North Carolina's Sedimentation Pollution Control Act is performance -oriented, requiring protection of existing natural resources and adjoining properties. If, following the commencement of this project, it is determined that the erosion and sedimentation control plan is inadequate to meet the requirements of the Sedimentation Pollution Control Act of 1973 (North Carolina General Statute 113A-51 through 66), this office may require revisions to the plan and implementation of the revisions to ensure compliance with the Act. Acceptance and approval of this plan is conditioned upon your compliance with Federal and State water quality laws, regulations, and rules. In addition, local city or county ordinances or rules may also apply to this land -disturbing activity. This approval does not supersede any other permit or approval. Please note that this approval is based in part on the accuracy of the information provided in the Financial Responsibility Form, which you provided. You are requested to file an amended form if there is any change in the information included on the form. This permit allows for a land -disturbance, as called for on the application plan, not to exceed the approved acres. Exceeding the acreage will be a violation of this permit and would require a revised plan and additional application fee. In addition, it would be helpful if you notify this office of the proposed starting date for this project. Please notify us if you plan to have a preconstruction conference. Your cooperation is appreciated. Sincerely, 15,4S*de Sally Castle, El Regional Engineering Associate Land Quality Section Enclosures: Certificate of Approval NPDES NCGO1 Fact Sheet cc: Pieter K. Sheer, PE (pieterftsmithgardnerinc.com ) Electronic Copy Regional Office File Appendix Design Clarifications and Modifications Construction Quality Assurance Report Johnston County MSW Landfill- Phase 6A Smithfield, North Carolina SMITH GARDNER Project: Johnston County MSW Landfill - Phase 6A Smithfield, North Carolina Owner: Johnston County Department of Solid Waste Services 680 County Home Road Smithfield, North Carolina 27577 Contractor: Shamrock Environmental Corp. ATTN: Bryan Gaidanowicz 6106 Corporate Park Drive Browns Summit, NC 27410 Reference(s): Culvert Schedules shown on Drawing S2 and Drawing EC1 Design Clarification No. Regulatory Review Required (Y/N): N *If Yes, see below. Strike out the culvert schedule on Drawing S2 (Subgrade Grading and Drainage Plan). Refer instead to the culvert schedule shown on Drawing EC1 (Phase 6A Erosion and Sedimentation Control Plan) which is correct. Reason for Clarification(sl: Discrepancies between the culvert schedules shown on Drawings S2 and EC1 Attachments: None Regulatory Agency: ATTN: Digitally signed by Pieter K. Scheer, P.E. Pieter K. Scheer, Gardner, Inc., K. Scheer P.E ou, emaPieter er@smiithgar, erSmith � u,email=pieter@smithgardnerinccom, c=US Date: 2020.07.0211:20:17-04'00' BY: Pieter K. Scheer, P.E. Title: Project Manager Date: July 2, 2020 Distribution: I X Owner I Contractor I Field I File I IRegulatoryAgency SMITH GARDNER Project: Johnston County MSW Landfill - Phase 6A Smithfield, North Carolina Owner: Johnston County Department of Solid Waste Services 680 County Home Road Smithfield, North Carolina 27577 Contractor: Shamrock Environmental Corp. ATTN: Bryan Gaidanowicz 6106 Corporate Park Drive Browns Summit, NC 27410 Reference(s): Drawing S2 (Subgrade Grading and Drainage Plan) Design Modification No Regulatory Review Required IY/NI: Y *If Yes, see below. NOTE: Each modification described herein is a revision of a previously approved permit and/or design feature. A French drain network is being added to Phase 6A as shown on the attached Figure 1. It is expected that the layout of the drain will be adjusted as needed including addition of laterals based on actual field conditions. However, the top of the drains (top of stone for perforated piping/stone) will be a minimum of 4.0 feet below the finished subgrade elevations. The water collected in the drain will be outleted to the north of Phase 6A into Sediment Basin 3W. Reason for Modification(s): To address soft and wet subgrade conditions in the eastern and central portions of Phase 6A which were occurring due to groundwater seepage and significantly above average rainfall. Attachments: Figure 1 (Phase 6A Construction Dewatering Plan) Regulatory Agency: NC DEO - DWM - Solid Waste Section ATTN: Donna Wilson/Christine Ritter donna.wilson(a)ncdenr.aov ch ristine. ritter(a)ncdenr.aov DocuSigned by: PsA4 Z 5MB31996A674D7... By: Pieter K. Scheer, P.E. Title: Project Manager Date: October 9, 2020 Distribution: I X Owner I Contractor I Field I File I RegulatoryAgency Jpo�f���i FRENCH DRAIN (SEE NOTES 1,2,& 4) 'OILD Pl� 176 183 ` —z20 (6"0 CPE (TYPE S)) 1 i i(TYP.) (SEE NOTE 2) 194 \ ) ��� �� �� 1 Q, w END CAP. \ ? `� _ ((t d 6- ym_'ai1/�/__= 179 lyo Oni 191 zoo = '_ ° _� / J 210 i 'o 20 0 — 210 l7 g,.a \ 1 m o ,a 1 eo~� Iv / 1\\ 06.3 ti � �� L- > C �- r " �, �)�, o'er � .•, ` z �.t .,.�, �r� /\ \ °0C \���)�(, �o ` �� l�iZ r ��i ��7� ✓jr-\��� two .1 1� �� ���� °ice^LI\L�rf� �sj \`I/� ~A71 \ 1 In \ (v 790 0 200' 400' mith Gardner, Inc. ++�maa►�auee►r�rNk CAR � `v�� DocuSigra by: � e' BEAL �1886 r 5B6B319i� 4 ��a�'s4,ARQ��4�ti4@°mac 10/9/2020 t^rarntgoo � 190 �— LEGEND 200EXISANG 10' CONTOUR (SEE REFERENCE 1) — — — — — — EXISANG 2' CONTOUR 200 PROPOSED 10' CONTOUR (SEE REFERENCE 2) PROPOSED 2' CONTOUR FRENCH DRAIN (SEE NOTES 1, 2, & 4) SOLID PIPE (SEE NOTE 2) 195 BOTTOM OF TRENCH ELEVATION (SEE NOTE 3) NOTES 1. ADJUST ALIGNMENT AND ADD LATERALS AS NEEDED TO ADDRESS WET AREAS. 2. MAINTAIN 1% FALL ON PIPE. 3. BOTTOM OF TRENCH ELEVATIONS CAN BE LOWER IF NEEDED TO CAPTURE FLOW. 4. MAINTAIN 4.0' MIN. FROM TOP OF STONE TO FINISHED SUBGRADE. REFERENCE 1. SITE BASE TOPOGRAPHY PROVIDED BY SHAMROCK ENVIRONMENTAL CORPORATION OCTOBER 2020. 2. DESIGN GRADES PER DRAWING S2 OF THE CONSTRUCTION PLANS TITLED "JOHNSTON COUNTY MSW LANDFILL PHASE 6A CONSTRUCTION DRAWINGS", PREPARED BY SMITH GARDNER, INC. DATED APRIL 2020. TOP OF SUBGRADE TYPE GT—S GE" XTILE WRAP 4.0 MIN. NCDOT NO 57 (OR SIMILAR) STONE//�//\IT, /j /i;� 6'0 PERFORATED PIPE \(CPE TYPE SP) I* BEDDING FRENCH DRAIN DETAIL NOT TO SCALE FIG.1 z w W J� z� a U a Z U s � - c U C� m z CD N O N Appendix Photographic Log Construction Quality Assurance Report Johnston County MSW Landfill- Phase 6A Smithfield, North Carolina ,3+ 6 ENa1NEER5 Client Name: Johnston County, North Carolina Photo No. Date: j 6/25/20 Direction Photo Taken: South Description: Site Clearing Site Location: Johnston County MSW Landfill - Phase 6A PHOTOGRAPHIC LOG Project No. JOHNSTON-19-4