6204_RepuiblicServices_UwharrieMSWLF_2022Cost Est._20220715

HODGES, HARBIN,
NEWBERRY & TRIBBLE, INC.
Consulting Engineers
June 15, 2022
Ms. Sarah M. Moutos
Environmental Program Consultant
Division of Waste Mgmt - Solid Waste Section
North Carolina Dept of Environmental Quality
217 W. Jones Street
Raleigh, NC 27603
Re: Uwharrie Regional MSW Landfill
Montgomery County, North Carolina
Facility Permit No. 62-04
Closure / Post -Closure Cost - REVISED
HHNT Project No. 6703-291-05
Dear Ms. Moutos:
We have enclosed the updated Closure/Post-Closure Cost Estimate for Financial Assurance on the subject
project. Please note, these costs have been updated to 2022 dollars and to address comments provided by
Mr. Ming Chao, P.E. during his review of the Phases 5 & 6 Permit to Construct application. The costs are
summarized below:
Closure Costs............................................................................................... $16,432,010.08
Post -Closure Costs....................................................................................... $115150,100.00
Potential Assessment and Corrective Action ................................................. $2,440,001.18
Total Financial Assurance............................................................................ $30,022,111.26
The annual financial assurance mechanism will be submitted under separate cover after these costs
have been approved. Should you have any questions, please call.
Sincerely,
HODGES, HARBIN, NEWBERRY & TRIBBLE, INC.
K Matthew Cheek, P.E
Professional Engineer
KMC/sc
Enclosure
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cc: Sherri Stanley (w/ enclosure)
Ming Chao, P.E. (w/ enclosure)
Mike Gurley (w/ enclosure)
Joe Reynolds (w/ enclosure)
3920 Arkwright Road, Suite 101 • Macon, Georgia 31210 [phone] • Fax [phone] • www.hhnt.com
SAVANNAH • ATLANTA • Macon • STATESBORO • GREENVILLE, SC

UHWARRIE REGIONAL LANDFILL
FACILITY PERMIT NO.62-04 MONTGOMERY COUNTY, NC
CLOSURE COST ESTIMATE
2022 UPDATE
GENERAL
Largest Area: Cells No. 1 - 14B = 6,355,404 s.f. = 145.9 acres
Subtract Acreage Previously Closed = 39.1 Acres
= 106.8 acres = 4,652,208 s.f.
CLOSURE CARE COST ESTIMATE
1 Contractor Mobilization
2 Subgrade Preparation
3 6" Topsoil
4,652,208 s.f. x 0.5 ft. — 27
4 18" Cover Soil
4,652,208 s.f. x 1.5 ft. — 27
5 18" Infiltration Layer (1 x 10-5 cm/sec)
484,262 s.f. x 1.5 ft. —
6 Drainage Layer (Geocomposite)
Material
Labor
7 FML
Material & Installation
8 Permanent Vegetation
9 Silt Fence
10 Excelsior Matting
11 Final Disposal of Waste & Cleanup
12 Downdrain Construction
13 Stormwater Diversion Berms
14 Stormwater Channels & Lining
15 Sediment Basin Cleanout
16 Landfill Gas Extraction System Expansion
17 Yard Waste Collection Unit Decomissioning
18 Scrap Tire Collection Unit Decomissioning
19 Waste Limit Survey for Deed Recordation
20 Engineering and Closure Certification
21 CQA Monitoring & Reporting (including Field & Lab testing)
22 Certification Surveying
1 L.S. @ $50,000.00 = $50,000.00
4,652,208 s.f. @ $0.22 = $1,023,485.76
ft3/cy = 86,152 c.y. @
ft3/cy = 258,456 c.y. @
$6.00 = $516,912.00
$6.85 = $1,770,423.60
27 ft3/cy = 26,903 c.y. @ $12.00 = $322,841.33
4,652,208
s.f.
@
$0.49 =
$2,279,581.92
4,652,208
s.f.
@
$0.15 =
$697,831.20
4,652,208
s.f.
@
$0.59 =
$2,744,802.72
106.8
ac
@
$2,950.00 =
$315,060.00
3,250
l.f.
@
$4.00 =
$13,000.00
516,912
s.y.
@
$2.00 =
$1,033,824.00
1,250
tons
@
$50.00 =
$62,500.00
11,386
l.f.
@
$78.00 =
$888,108.00
84,643
l.f.
@
$22.25 =
$1,883,306.75
16,000
s.y.
@
$89.85 =
$1,437,600.00
12,000
c.y.
@
$7.00 =
$84,000.00
1
L.S.
@
$200,000.00 =
$200,000.00
1
L.S.
@
$20,000.00 =
$20,000.00
1
L.S.
@
$20,000.00 =
$20,000.00
1
L.S.
@
$6,500.00 =
$6,500.00
106.8
ac
@
$2,650.00 =
$283,020.00
106.8
ac
@
$6,461.00 =
$690,034.80
106.8
ac
@
$835.00 =
$89,178.00
TOTAL CLOSURE COST (2022)
$16,432,010.08

UWHARRIE REGIONAL LANDFILL
FACILITY PERMIT NO. 62-04 MONTGOMERY COUNTY, NC
POST CLOSURE CARE COST ESTIMATE
2022 UPDATE
Constructed Area Covered by this Est. = 145.9 ac
1 Water Monitoring & Statistics
(Includes Appendix I sampling, analysis & reporting for 2 events per year.)
Groundwater 21 wells @
2
event/yr
@
$1,450.00 =
$60,900.00
Underdrain 1 location @
2
event/yr
@
$1,450.00 =
$2,900.00
Surface Water 3 locations @
2
event/yr
@
$205.00 =
$1,230.00
Leachate 1 sample @
2
event/yr
@
$960.00
$1,920.00
2 Methane Gas Monitoring 17 wells @
4
events/yr
@
$25.00 =
$1,700.00
3 Sediment & Erosion Control,
(including Inspections, Repairs to Cap, Slope & Vegetation)
1
L.S.
@
$31,000.00 =
$31,000.00
4 Sediment Basin Cleanout
1,200
C.Y.
@
$7.40 =
$8,880.00
5 Leachate Collection Treatment & Analysis (Average over 30 years)
1
L.S.
@
$70,000.00 =
$70,000.00
6 Leachate System Maintenance (including camera & jetting every 5 yrs)
1
L.S.
@
$22,000.00 =
$22,000.00
7 Alarm System Monitoring
1
L.S.
@
$1,440.00 =
$1,440.00
8 Engineering Inspections & Reporting
4
yr
@
$1,500.00 =
$6,000.00
9 Air Emissions Testing & Reporting
1
yr
@
$5,700.00 =
$5,700.00
10 Operation & Maintenance of the Methane Gas Collection System
1
yr
@
$110,000.00 =
$110,000.00
11 Mowing
2
yr
@
$9,750.00 =
$19,500.00
12 Site Maintenance & Repair
(including fencing, gates, security, paths to final cover system &
1
L.S.
@
$2,500.00 =
$2,500.00
monitoring network)
ANNUAL POST CLOSURE CARE COST (2022)
$345,670.00
X 30 YEARS
$10,370,100.00
13 Leachate System Decommissioning (one-time cost)
2 Ea. @ $75,000.00 = $150,000.00
14 LFG System Decommissioning (one-time cost)
(including conversion to passive vents) 1 L.S. @ $630,000.00 = $630,000.00
ANNUAL POST CLOSURE CARE COST (2022) $780,000.00
TOTAL 30 YEAR COST (2022) $11,150,100.00