0403_AnsonLF_20240129

MJM CONSULTING, LLC in partnership with
January 29, 2024
Ms. Donna J. Wilson
Engineering Project Manager, Solid Waste Section
Division of Waste Management
North Carolina Dept. of Environmental Quality
1646 Mail Service Center
Raleigh, NC 27699
Subject: Chambers Development of North Carolina, Inc.,
A Wholly -Owned Subsidiary of Waste Connections, Inc.
Anson County Landfill, Polkton, North Carolina
Permit No. 0403-MSWLF-2010
Phase 4, Cell 2 Intercell Berm
Construction Quality Assurance (CQA) Report
Dear Ms. Wilson:
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On behalf of Waste Connections of the Carolinas, we are writing to provide documentation and
certification of construction of the Phase 4 Cell 2 Intercell Berm Construction at the Anson County
Landfill in Polkton, North Carolina.
The intercell berm as shown on the drawings attached to the Phase 4 Cell 2 Liner Modification
prepared by Weaver Consultants dated 16 January 2024 illustrates the separation of Cell 2 into
west and east within Phase 4 Cell 2 using a lined intercell berm built within the municipal solid
waste (MSW) disposal cell at the Anson Waste Management Facility (AWMF).
This CQA Letter Report presented in Attachment A includes information prepared in accordance
with the requirements of Rule .1621 of 15A NCAC 1313, and contains results of construction
quality assurance and construction quality control testing for the Phase 4 Cell 2 Intercell Berm in
accordance with the following:
i. The approved CQA Plan, dated 26 March 2018;
ii. The conditions of the Permit to Construct, dated December 7, 2018, and modified March
11, 2022;
iii. The Phase 4 Cell 2 Minor Modification by Weaver Consultants, dated 16 January 2024 and
approved by DEQ;
45 Woodstock St., Roswell, GA 30075 Phone: [phone]

iv. The requirements of Rule 15A NCAC 13B.1624; and
V. Acceptable engineering practices.
Based on my review of the as -built surveys; the CQA Daily Field Reports; and the monitoring,
QA testing and visual observation of the construction; it is my professional opinion that
construction of the intercell berm and associated facilities (leachate sump, pump, and piping) of
the intercell berm of Phase 4 Cell 2 was completed in accordance with the approved permit
drawings dated 16 January 2024, the five permit conditions noted above, and as documented in
Attachment A -the Final Intercell Berm Construction Quality Assurance Letter Report. The
western third of the cell, delineated by the blue line on Drawing 1 of the 16 January 2024 drawings
by Weaver Consultants, is not approved for certification at this time.
I hereby certify the construction of the intercell berm as evidenced by my North Carolina seal
and signature.
Please contact me at [phone] or mikemontel(d),comcast.net with questions or comments
regarding the report.
Sincerely,
C A R.01
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SEAL
27091 -
•........
ichael J. Monteleone, P.E.
Member/Manager
Attachment A - Final Phase 4, Cell 2 Intercell Berm CQA Letter Report
cc: Brady Stewart
Matt Crockett, P.E.
Tyler Fitzgerald
Massoud Madani
Sidney Lorick
Kingsley Nwaogwugwu
Jason Watkins
Ed Mussler
- Waste Connections
- Waste Connections
- Waste Connections
- Oasis Consulting Services
- Oasis Consulting Services
- Oasis Consulting Services
- NC Dept. of Environmental Quality
- NC Dept. of Environmental Quality
Anson Waste Management Facility Cover Letter
Phase 4, Cell 2 Intercell Berm Page 2

ATTACHMENT A
FINAL INTERCELL BERM
CQA LETTER REPORT

FINAL CERTIFICATION LETTER REPORT
prepared for
WASTE CONNECTIONS
Connect with the Future®
WASTE CONNECTIONS OF THE CAROLINAS
CONSTRUCTION OF PHASE 4, CELL 2 INTERCELL BERM
ANSON COUNTY LANDFILL, POLKTON, NORTH
CAROLINA
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CERTIFICATION RECOPC ARR BE PRE -APPROVER BY THE COMPANY PRIOR TO DISPOSAL
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prepared by
MJM CONSULTING, LLC in partnership with
29 JANUARY 2024
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CONSTRUCTION
SERVICES, INC.

MJM CONSULTING, LLC in partnership with
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TABLE OF CONTENTS
1. GENERAL............................................................................................................1
2. PROJECT OVERVIEW..........................................................................................2
2.1 Project Team.................................................................................................................2
2.2 Project Schedule...........................................................................................................3
3. QUALITY ASSURANCE MONITORING / FIELD & LABORATORY TESTING ......... 4
3.1 Soil Berm Construction................................................................................................4
3.2 HDPE
Geomembrane Installation Observations..........................................................4
3.2.1
General Monitoring Procedures............................................................................... 5
3.2.2
Manufacturer Quality Control Certificates for Geomembrane................................. 5
3.2.3
HDPE Geomembrane Conformance Testing and Deployment
Observations............................................................................................................. 6
3.2.4
Geomembrane Trial Seam Observations.................................................................. 6
3.2.5
Geomembrane Seaming............................................................................................ 7
3.2.6
Geomembrane Defect and Repair Observations...................................................... 7
3.2.7
Geomembrane Seam Strength Destructive Testing Observations ............................ 7
3.2.8
Geomembrane Seam Non -Destructive Continuity Testing
Observations............................................................................................................. 8
3.3 Leachate and Forcemain Collection System Observations..........................................8
PHOTOGRAPHS
FIGURES
Figure 1 - Geomembrane Panel Layout with Destructive Test and Repair
Locations
Figure 2 - Record Drawing for Certification of Intercell Berm and Piping
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MJM CONSULTING, LLC in partnership with
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ATTACHMENTS
A. List of Monitoring and Installation Personnel
B. Soil Laboratory Testing Results
Section 1
- Structural Fill
Section 2
- Protective Cover
Section 3
- LCS Aggregate
C. Manufacturers' Quality Control Certificates
Section 1 - HDPE Geomembrane
Section 2 - Geotextile
D. Conformance Test Results
Section 1 - HDPE Geomembrane
E. Geomembrane Documentation
Section 1 - Geomembrane Extrusion Seam Log
Section 2 - Extrusion Destructive Sample Test Results
F. Daily Reports and Field Density Check Points for Intercell Berm
ii

MJM CONSULTING, LLC in partnership With
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1. GENERAL
MJM Consulting, LLC, in partnership with Oasis Construction Services, Inc. (MJM/Oasis), was
retained by Waste Connections of the Carolinas to provide construction quality assurance (CQA)
monitoring and final certification services for the construction of the Intercell Berm at the Anson
County Landfill in Polkton, North Carolina as shown on Phase 4 Cell 2 Construction Plans dated
16 January 2024.
For the intercell berm construction, the project involved an HDPE intercell berm system to be
constructed over an existing liner consisting of an 18-inch-thick compacted clay subbase (1x10-5
centimeters per second maximum permeability), a geosynthetic clay liner (GCL), a 60-mil high -
density polyethylene (HDPE) textured geomembrane, a geocomposite drainage layer, and a 24-
inch-thick protective cover layer. The Phase 4, Cell 2 intercell berm was built in accordance with
the approved CQA Plan dated March 26, 2018, Permit to Construct dated December 7, 2018, the
requirements of Rule 15A NCAC 13B.1624, and the minor modification for Phase 4 Cell 1 dated
11 March 2022; as well as the contract drawings for the construction of Phase 4, Cell 2 East
Subgrade Plan, Anson Waste Management Facility, dated 16 January 2024 and prepared by
Weaver Consultants Group, Fort Worth, TX (WCG), and the approved Construction Quality
Assurance & Construction Quality Control (CQA/CQC) Plan.
One exception to these design documents was noted. It was determined that the surveyor
inadvertently set subgrade elevations at 3.5 feet lower than design. The eastern two-thirds of the
cell provided the requisite minimum 4-foot groundwater separation. This report certifies only the
intercell berm as shown on the drawings issued for construction dated 17 January 2024 on Figure
3 separating the east cell from the west cell, and the associated piping and sump as shown in the
attached asbuilt drawings. The CQA data obtained for the western third met the requirements of
these documents, with the exception that the subgrade was set 3.5 feet lower than design. This
section is not certified at this time.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Page I

MJM CONSULTING, LLC in partnership With
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2. PROJECT OVERVIEW
2.1 Project Team
MJM/Oasis provided CQA services throughout the project to monitor the construction activities
performed by contractors, and to compile the required testing and surveying data for the final
certification report documenting that the project has been constructed in substantial compliance
with the approved permit drawings and CQA/CQC Plan. Design and engineering services were
provided by WCG.
The duties of MJM/Oasis were, more specifically, as follows:
Quality Assurance (QA) monitoring services were provided by MJM/Oasis, which had
personnel onsite on a full-time basis. The objectives of the QA Monitoring Program were
to observe and document the materials and installation procedures for conformance to the
project requirements, and to provide a certification statement that the installation was in
accordance with plans and specifications. A listing of MJM/Oasis personnel involved in
the project is presented in Attachment A.
• Geotechnical laboratory testing of the structural fill and leachate collection aggregate
layer was previously conducted by MJM/Oasis and Excel Geotechnical Testing, Inc.
(Excel) (See Attachment B). Structural fill was obtained from the pre -approved onsite
borrow area. Aggregate (i.e., 57 stone and protective cover) were obtained from the pre -
approved onsite stockpile.
Geosynthetics testing was performed by TRI Environmental, Inc. of Austin, Texas (see
destructive seam testing results in Attachment D). Geomembrane for the rainflap was
obtained from the pre -approved 60-mil HDPE rolls onsite.
The certifying engineer assigned to the project was Mr. Michael Monteleone, P.E., a registered
professional engineer licensed to practice in the State of North Carolina. He reviewed the product
submittals, test results, the as -built drawing; and prepared the final certification letter report.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Page 2

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2.2 Project Schedule
The construction of the Phase 4, Cell 2 intercell berm began on 16 January 2024, and was
substantially completed 29 January 2024. Anson Contractors, Inc. (ACI) was the general
contractor for construction of the intercell berm for Phase 4, Cell 2. MJM/Oasis had a full-time
monitor onsite from 16 January 2024 through the project completion date of 29 January 2024.
A brief onsite geosynthetic meeting was held on 23 January 2024 with representatives of
Chesapeake Lining (Chesapeake) and MJM/Oasis. Topics of this meeting included the project
scope, lines of communication and responsibilities, and installation procedures. Parties in
attendance were in agreement concerning the scheduling and installation procedures. Chesapeake
demobilized 25 January 2024.
Results of the required testing and material properties, CQA monitoring services, and required as -
built surveys are contained in this final certification letter report.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Page 3

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3. QUALITY ASSURANCE MONITORING / FIELD & LABORATORY TESTING
3.1 Soil Berm Construction
A soil berm was constructed in order to separate Cell 2 into an east/west cell along the alignment
of the intercell berm. The material for the berm was obtained from the previously approved onsite
borrow area. The berm material was tracked -in with equipment to verify soundness and
acceptability of in -situ material.
Structural fill materials were obtained from the onsite borrow area and consisted of fine, sound,
loose earth exhibiting -3 percent to +3 percent optimum moisture content, for compaction to a
minimum of 95 percent of maximum dry density, as determined by the standard Proctor test
method. During construction, MJM/Oasis personnel verified that the horizontal lifts did not
exceed 18 inches, and that surfaces were properly scarified prior to placement of additional lifts.
A total of three (3) structural fill field moisture/density tests were performed to check both in -place
moisture content, and the degree of compaction achieved by the contractor. A summary of the
field moisture/density test results for structural fill is presented in Attachment B; our review
indicated that the structural fill was placed and compacted sufficiently for the end use. Care was
observed during placement and compaction since the primary liner was directly beneath this berm.
ACI provided field construction staking at appropriate intervals. The grades were subsequently
certified by Lawrence Associates of Monroe, North Carolina (Lawrence Associates). Please note
the exception whereby it was previously determined that the surveyor inadvertently set subgrade
elevations at 3.5 feet lower than design. The eastern two-thirds of the cell provided the requisite
minimum 4-foot groundwater separation. This report certifies only the intercell berm rainflap
system to allow waste placement in the eastern two-thirds of the cell, as shown on Figures 1 and
2.
3.2 HDPE Geomembrane Installation Observations
The installation of the geomembrane rainflap was performed by Chesapeake. A work history of
the Chesapeake personnel who were involved with this project is presented in Attachment A.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Page 4

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3.2.1 General Monitoring Procedures
The CQA monitoring activities performed by MJM/Oasis during installation of the HDPE
geomembrane rainflap consisted of the following:
• Observing, documenting, and evaluating trial seam test results;
• Observing and documenting HDPE geomembrane seaming techniques and field seams;
• Identifying and documenting defects, as well as observing and documenting repairs; and
• Observing and documenting the installation of the leachate collection piping system.
One CQA monitor was present at the site on a full-time basis to perform the above activities during
the installation of the geomembrane liner.
3.2.2 Manufacturer Quality Control Certificates for Geomembrane
The geosynthetic components for the intercell berm consisted of materials used during
construction of Phase 4 Cell 2. QA/QC documentation is presented in the Phase 4 Cell 2
Certification Report dated December 2023. The following materials were used for the berm:
• A minimum 60-mil. thick, textured HDPE geomembrane (23-foot-wide by 500-foot-
long rolls) (Skaps)
• Non -woven geotextile in 15-foot-wide by nominal 300-foot-long rolls (Skaps)
Manufacturer Quality Control (QC) Certificates for SKAPS are included in Appendix C of this
Report. A review of the SKAPS documentation indicated that the geomembrane was
manufactured in accordance with project specifications. The 60-mil geomembrane and non -woven
geotextile were obtained from rolls onsite that were pre -approved for this cell. Geomembrane Roll
Nos. 3101402010 and 3101402011 were previously approved for use as rainflap material fo the
intercell berm. The data on the rolls shown as highlighted in yellow in Attachment D illustrates
the passing MQC test results for this project.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Page 5

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3.2.3 HDPE Geomembrane Conformance Testing and Deployment
Observations
Prior to HDPE geomembrane deployment, the subbase material was prepared using a dozer.
MJM/Oasis CQA monitors, along with Chesapeake personnel, visually inspected the subbase
surface to verify that the surface was smooth and free of irregularities, foreign matter, or surface
conditions that could damage the geomembrane. In accordance with the specifications,
Chesapeake submitted subgrade acceptance certificates prior to deployment of HDPE
geomembrane panels for the Intercell Berm. These certificates are presented in Attachment A.
Geomembrane panels were deployed using a front-end loader to lift the rolls, as well as personnel
who unrolled the panels in place. Chesapeake then aligned each panel of the geomembrane to
allow a nominal 5-inch overlap with the adjacent panel. Free edges of panels were temporarily
loaded with sandbags until the panels were seamed together. A summary of the geomembrane
panel deployment data is presented in Attachment E. An as -built drawing of the geomembrane
liner installation, which shows the panel layout, repair locations, and seam destructive sample
repair locations, is presented in Figure 1.
The CQA monitoring staff assigned a field identification number to each panel in chronological
order of deployment, and recorded the roll number assigned to the material by the manufacturer.
Each panel was visually examined for manufacturing defects and installation damage immediately
after deployment. Upon completion of the installation, the liner was again visually examined to
identify any subsequent damage. Individual defects were marked, documented, and subsequently
repaired by the installer.
3.2.4 Geomembrane Trial Seam Observations
Trial seams were performed by Chesapeake welding technicians as an ongoing monitoring method
of the performance of both the welder operator and the welding apparatus. Trial seams were made
in the morning and afternoon, approximately every four hours. These trial seams were then tested
by Chesapeake using a tensitometer to verify the strength of the welds. Trial seam testing was
observed and documented by an MJM/Oasis CQA monitor. Five specimens from each trial seam
were tested. If a trial seam test failed, the welding apparatus or welder was not accepted or used
for seaming until the deficiencies were corrected, and two consecutive successful trial seams were
achieved. Summaries of the trial seam data for the intercell berm rainflap are presented in
Attachment E-2. Test results for extrusion welding are presented in Attachment E-5.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Construction CQA Page 6

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3.2.5 Geomembrane Seaming
Chesapeake used extrusion welding for this project where possible. The manual extrusion welding
method included seams, repairs, and the completion of end seams. The CQA monitors tracked the
progress of each welder, and monitored each seam for visual defects and for seam completion.
Visual defects were marked and subsequently repaired by Chesapeake. A summary of
geomembrane seaming data for Cell 2, for fusion and extrusion welding, respectively, is presented
in Attachment E-5.
3.2.6 Geomembrane Defect and Repair Observations
Geomembrane panels were visually monitored for damage during deployment. Additionally, the
CQA monitors examined the geomembrane panels and seams on an ongoing basis throughout the
installation process.
Defects found on the geomembrane panels and/or seams were marked, documented by the CQA
monitor, and subsequently repaired by Chesapeake. The repair procedures were observed and
logged by the CQA monitor, and the locations were mapped. A summary of the intercell berm
defects and repairs is presented in Attachment E-4. The approximate location of the repairs is
shown in Figure 1.
3.2.7 Geomembrane Seam Strength Destructive Testing Observations
Destructive seam sample locations were selected by CQA monitors based on the progress of a
particular welder or welding device, or based on the suspicion of defective welding. Destructive
testing was conducted at a minimum frequency of one sample per every 500 linear feet of the
completed seam for each welding apparatus.
Two extrusion destructive seam samples were procured by MJM/Oasis and submitted to TRI for
laboratory testing. Five specimens were tested for peel adhesion (peel), and five specimens were
tested for shear strength (shear), for each seam sample. The acceptance criteria for shear were that
four out of five specimens must have yield strengths greater than 120 pounds per inch of width;
additionally, failure should not occur within the weld. The acceptance criteria for peel testing were
that four out of five specimens (for each track) should not fail within the weld, and that each
specimen must exhibit a yield strength greater than 91 pounds per inch of width. Both samples
passed the test criteria. A summary of the destructive seam sample laboratory test results for fusion
welding is presented in Attachment E-5. The approximate locations of the destructive seam
samples are shown in Figure 1.
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Construction CQA Page 7

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3.2.8 Geomembrane Seam Non -Destructive Continuity Testing
Observations
Geomembrane extrusion seams for the intercell berm were non-destructively tested by Chesapeake
using vacuum box methods. MJM/Oasis monitored the non-destructive testing on a procedural
basis and documented the progress of testing. Non-destructive testing was performed in
accordance with project specifications, and no deficiencies were indicated by the testing.
Summaries of the non-destructive testing of seams and repairs are presented in Attachment E-4.
3.3 Leachate and Forcemain Collection System Observations
The leachate collection system for the Cell 2 intercell berm consisted of a geomembrane and a
minimum 24-inch-thick manufactured sand protective cover layer. The leachate collection pipes
were surrounded by No. 57 aggregate wrapped with non -woven geotextile. The material was
obtained from an approved No. 57 aggregate stockpile. Test results for aggregate are presented in
Attachments B-2 and B-3.
The construction was completed in accordance with:
(i) The approved CQA plan, dated March 26, 2018;
(ii) The conditions of the permit to construct, dated December 7, 2018;
(iii) The requirements of Rule 15A NCAC 13B .1624; and
(iv) The Phase 4 Cell 2 Minor Modification prepared by WCG and dated 16 January 2024.
(v) The approved minor modification of cell re -design, dated March 11, 2022, by Nathan
Bivins, Civil and Environmental Consultants, Inc.
Please contact Mr. Michael J. Monteleone, P.E. at [phone], or mikemontelkcomcast.net
with any questions or comments regarding this report.
C A R.01
SEAL
27091 -
•........_34
ichae onteleone, P.E.
CQA Engineer of Record
Anson Waste Management Facility Final Certification Report
Phase 4, Cell 2 Intercell Berm Construction CQA Page 8

PHOTOGRAPHS

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