4406_BlueRidgePaper_PostClosureCostEst_FID1795628_20230517

Evergreen Packaging - Canton Mill
Landfill No. 6
Canton, North Carolina
2023 Post -Closure Care and Monitoring Cost Estimate
Inflation Multiplier per NCDEQ-As of January 1, 2023
6.9%
ESTIMATED COSTS
1.0 Landfill Maintenance
Adjusted for
Years
Cost/Year
Total Cost
Inflation
a. General Site Repairs and Maintenance
1-30
$7,500
$225,000
$695,800
Required repairs will include erosion repairs of the cover system, siltation removal from
the stormwater conveyance system, surface repairs to the roads, and culvert
maintenance.
Approximately 150 acres of the landfill facility will require mowing and clearing of woody
1-30
$25,000
$750,000
$2,319,500
vegetation. Mowing / clearing will occur twice per year.
b. Snow Removal
1-30
$3,260
$97,800
$302,500
Road maintenance during the winter months will include plowing, sanding, and shoveling
c. Gas Control System
1-30
$ - $
-
$ -
Not Applicable
SUBTOTAL LANDFILL MAINTENANCE
$ 3,317,800
2.0 Landfill Inspections
Adjusted for
Years
Cost/Year
Total Cost
Inflation
a. Mill Inspections
1-3
$650
$1,950
$2,100
This item provides the cost for periodic inspections by Evergreen personnel. The first 3-
4-30
$400
$10,800
$35,800
vears will require 2 visits per year. Years 4-30 will require 1 visit per vear.
b. Independent Engineering Firm
1-3
$4,900
$14,700
$15,700
Cost associated with this item include 2 site inspections per year for the first three years of
4-30
$3,000
$81,000
$268,700
post closure and 1 site inspection per year for years 4-30.
c. Geotechnical Inspections
1-30
$3,700
$111,000
$343,300
This item includes the cost associated with one site inspection per year for the 30-year
post closure period. Cost include the review of data (piezometers, settlement, gauges,
etc.), and a letter report documenting the condition of the landfill.
SUBTOTAL LANDFILL INSPECTIONS $665,600
3.0 Leachate Management
Adjusted for
Years
Cost/Year
Total Cost
Inflation
a. Replacement Cost
These costs are assumed replacement costs for the leachate pond liner (20 yr life),
leachate pumps (10 vear life), and flow meter and controls (15 yr life).
Pond liner (40,000 SF)
$52,200
$198,300
Pumps
$32,100
$62,600
Flow Meter and Controls
$16,000
$43,500
b. Preventative Maintenance
1-30
$9,780
$293,400
$907,400
Assumes biannual preventative maintenance of the leachate force main, cleaning and
inspection of the leachate pond liner and annual cleaning and inspection of the leachate
collection system.
c. Electric Cost (Pump Station)
1-30
$6,300
$189,000
$584,500
This item includes the electrical cost for three pump stations.
d. General cost
1-30
$9,780
$293,400
$907,400
This item includes costs associated with general repairs and maintenance to the pump
station buildings, pumps, fitting, valves, meters and lights.
e. Leachate Treatment
Leachate
Generation
Adjusted for
Years Cost/gal
Gal/Yr
Total Cost
Inflation
Cost associated with treating the leachate pumped to the WWTP. Leachate generation is
1-30 $ 0.00050
9,022,000
$135,300
$418,500
based on geomembrane covers for Area 6D and Area 6E, and soil covers on Area 6A-East,
West. and 6B and 6C.
SUBTOTAL LEACHATE MANAGEMENT $3,122,200
20230403pcmmcloscost inflation_ final
1 4/3/2023

Evergreen Packaging - Canton Mill
Landfill No. 6
Canton, North Carolina
2023 Post -Closure Care and Monitoring Cost Estimate
4.0 Compliance Monitoring Adjusted for
Years Cost/Year Total Cost Inflation
a. Sampling and Analysis 1-5 $65,200 $326,000 $374,200
Cost associated with water quality monitoring, testing, and reporting include field 6-30 $45,500 $1,137,500 $3,960,300
sampling, laboratory analysis, quarterly and annual reporting, equipment cost, mileage,
hotel, meal cost and miscellaneous materials cost. The water sampling will be at a rate of
twice a year for the first five years and once a year the following twenty five years.
b. Landfill Gas Monitoring 1-10 $7,900 $79,000 $108,600
Cost associated with methane gas testing, and reporting include field sampling, and semi 10-30 $7,700 $154,000 $608,600
annual reporting, equipment cost, mileage, hotel, meal cost and miscellaneous materials
cost. The gas monitoring will be at a rate of twice per year for the first ten years and once
a year the following twenty years.
c. Maintenance and Repair 15 $19,600 $53,300
This item provides the cost to replace two monitoring wells and a gas probe over the 30-
year post -closure period. The cost includes drilling, installation, development, and
documentation.
SUBTOTAL COMPLIANCE MONITORING $5,105,000
30-YR POST -CLOSURE CARE, MONITORING, AND MAINTENANCE $12,210,600
POST -CLOSURE CORRECTIVE ACTION USED IN FINANCIAL ASSURANCE - ADJUSTED FOR INFLATION $2,608,400
($2,000,000 statutory minimum, July 2011)
Reviewed by Sevee & Maher Engineers, 4/3/2023
20230403pcmmcloscost inflation_ final
2 4/3/2023