2015 Worksheet for Calculating Closure and Post-closure Cost Estimates
All site data necessary to calculate estimates of closure and post-closure costs can be gathered by
completing table H.1. Data from Table H.1 should be inserted into Tables H.2 and I.1 to
complete calculations.
Table H.1 Site Data
Facility Name:
Permit Number:
Description
Quantity
Total Permitted Area
acres
Active Portion
Composite Lined
acres
Soil Lined
acres
Area of Largest Cell/Phase
Requiring Final Cap
Composite Lined
acres
Soil Lined
acres
Perimeter Fencing
linear feet
Groundwater Monitoring
VLF
Wells
Methane Gas Probes
VLF
Terraces
linear feet
Letdown channels
linear feet
Perimeter drainage ditches
linear feet
Average Daily Flow
tons/day
Landfill Disposal Cost
$/ton
VLF = Vertical linear feet. The sum of the depths of all monitoring wells.
Units
Table H.2 Closure Cost Estimate
Facility Name:
Permit Number:
Task/Service
1 Preliminary Site
Work
a Conduct Site
Evaluation
b Dispose Final
Wastes
Average Daily Flow
Disposal Cost
Quantity
Units
Multipliera
1
Lump sum
1
c
tons/day
tons/day
5
d
Unit Costb
$3,481.71
e
Subtotal
$3,481.71
c Remove Temporary
Building(s)
d Remove Equipment
e Repair/Replace
Perimeter Fencing
f Clean Leachate
Line(s)
2 Monitoring
Equipment
a Rework/Replace
Monitoring Well(s)
b Plug Abandoned
Monitoring Well(s)
c Rework/Replace
Methane Probe(s)
d Plug Abandoned
Methane Probe(s)
e Rework/Replace
Remediation and/or
Gas Control
Equipment
3 Construction
a Complete Site
Grading to include
on- and off-site
borrow areas
b Construct Final Cap
Compacted On-site
Clay Cap or
Compacted Off-site
Clay Cap or
Install Geosynthetic
Clay Liner Cap
c Construct Landfill
Gas Venting Layer
Place Sand or
Install Net and
Geotextile
d Install Passive
Landfill Gas Vents
e Install Flexible
Membrane Liner
f Drainage Layer
Place Sand or
Install Net and
Geonet
1
lump sum
1
$3,192.74
$3,192.74
1
lump sum
linear feet
1
0.25
$2,606.22
$3.42
$2,606.22
1
lump sum
1
$1,576.97
$1,576.97
VLF
0.25
$73.22
VLF
0.25
$29.31
VLF
0.25
$63.23
VLF
0.25
$23.10
lump sum
0.05
acres
1
$1,380.41
cubic yards
1
$4.96
cubic yards
1
$8.05
square feet
1
$0.51
acres
square feet
1
1
$36,910.77
$0.37
acres
1
$884.23
square feet
1
$0.40
acres
square feet
1
1
$36,910.77
$0.37
1
f
g Place On-site
Topsoil
Place Off-site
Topsoil
h Establish vegetative
cover, including onand off-site borrow
areas
4 Drainage/erosion
control
a Construct Terraces
b Construct Letdown
Channels
c Clean Perimeter
Drainage Ditches
5 Tasks Not
Identified
6 Subtotal
7 Administrative
Services
8 Technical and
Professional
Services
9 Closure
Contingency
10 Total Final Closure
a
cubic yards
1
$2.13
cubic yards
1
$17.04
acres
1
$523.86
linear feet
linear feet
1
1
$8.93
$8.38
linear feet
0.50
$6.80
1
lump sum
0.10
g
1
lump sum
0.12
g
1
lump sum
0.10
g
h
Multipliers are determined from the Solid Waste Financial Assurance Program Report, December 22, 2000.
Unit costs include a 1.44% inflationary adjustment for 2015.
c
New facilities: Insert the value for “W” in OAC 252:515-27-8(a)(2). Existing facilities: Insert reported annual
tonnage for the previous year, divided by 312 operating days per year (52 weeks per year x 6 operating days per
week).
d
Insert number of tons/day from above.
e
Insert landfill disposal cost per ton of waste ($/ton).
f
Input capital cost for gas control/remediation equipment, if installed at the site.
g
Input subtotal from line 6.
h
Add rows 6 through 9.
b
Table I.1 Post-closure Cost Estimate
Facility Name:
Permit Number:
Task/Service
1 Site maintenance
a Site Inspections
b General
Maintenance
Quantity
Units
4
per year
Multipliera
Unit Costb
30
$76,003.31
$633.36
8
30
1
per year
$20,267.55
$56,965.66
$1,898.56
8
c Remediation and/or
Gas Control
Equipment
2 Monitoring
equipment
a Rework/Replace
Monitoring Well(s)
b Plug Abandoned
Monitoring Well(s)
c Final Plugging of
Monitoring Wells
d Rework/Replace
Methane Probe(s)
e Plug Abandoned
Methane Probe(s)
f Final Plugging of
Methane Probes
g Final Plugging of
Piezometer(s)
3 Sampling and
analysis
a Groundwater
Monitoring Wells
1
$15,190.84
lump sum
0.3c
d
VLF
0.25
$73.70
VLF
0.25
$29.31
VLF
1
$29.31
VLF
0.25
$63.23
VLF
0.25
$23.10
VLF
1
$23.10
VLF
1
$23.10
60
$682.94
e
wells
16
b Methane Gas Probes
c Surface Water
Monitoring Points
d Leachate
4 Final cover
maintenance
a Mow and Fertilize
Vegetative Cover
$168.56
probes
points
60
60
$44.31
$82.31
sample
60
$132.62
30
acres
Subtotal
$209.52
b Repair Erosion,
Settlement, and
Subsidence for Onsite Soils
Repair Erosion,
Settlement, and
Subsidence for Offsite Soils
c Reseed Vegetative
Cover
5 Leachate
management
a Clean Leachate
Line(s)
b Maintain Leachate
Collection System
and Equipment
c Collect, Treat,
Transport, and
Dispose of Leachate
6 Tasks not identified
7 Subtotal
7 Administrative
Services
8 Technical and
Professional
Services
9 Post-closure
Contingency
10 Total Post-closure
a
8
30
acres
$3.03
8
30
acres
$18.17
8
acres
0.20
$523.85
1
per year
30 (30 yrs)
$1,624.12
$48,723.46
1
per year
30 (30 yrs)
$2,523.13
$75,693.82
gal/yr
30
1
lump sum
0.06
f
1
lump sum
0.07
f
1
lump sum
0.10
f
$0.32
g
Multipliers are determined from the Solid Waste Financial Assurance Program Report, December 22, 2000.
Unit costs include a 1.44% inflationary adjustment for 2015.
c
5% of equipment capital cost, maintenance performed once per 5 yrs for 30 years.
d
Input capital cost for gas control/remediation equipment, if installed at the site.
e
If the approved groundwater monitoring plan requires monitoring for alternative constituents, unit costs shall be
calculated in accordance with OAC 252:515-27-52(b) or (c).
f Input subtotal from line 7.
g
Add lines 7 through 10.
b