2013 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

Units

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 Wells

 

VLF

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.

 

Table H.2 Closure Cost Estimate

 

Facility Name:

 

Permit Number:

 

Task/Service

Quantity

Units

Multipliera

Unit Costb

Subtotal

1

Preliminary Site Work

 

 

 

 

 

a

Conduct Site Evaluation

1

Lump sum

1

$3,381.90

$3,381.90

b

Dispose Final Wastes

 

 

 

 

 

 

Average Daily Flow

c

tons/day

 

 

 

 

Disposal Cost

d

tons/day

5

e

 

c

Remove Temporary Building(s)

1

lump sum

1

$3,101.21

$3,101.21

d

Remove Equipment

1

lump sum

1

$2,531.50

$2,531.50

e

Repair/Replace Perimeter Fencing

 

linear feet

0.25

$3.32

 

f

Clean Leachate Line(s)

1

lump sum

1

$1,531.76

$1,531.76

2

Monitoring Equipment

 

 

 

 

 

a

Rework/Replace Monitoring Well(s)

 

VLF

0.25

$71.12

 

b

Plug Abandoned Monitoring Well(s)

 

VLF

0.25

$28.47

 

c

Rework/Replace Methane Probe(s)

 

VLF

0.25

$61.41

 

d

Plug Abandoned Methane Probe(s)

 

VLF

0.25

$22.44

 

e

Rework/Replace Remediation and/or Gas Control Equipment

1

lump sum

0.05

f

 

3

Construction

 

 

 

 

 

a

Complete Site Grading to include on- and off-site borrow areas

 

acres

1

$1,340.83

 

b

Construct Final Cap

 

 

 

 

 

 

Compacted On-site Clay Cap or

 

cubic yards

1

$4.82

 

 

Compacted Off-site Clay Cap or

 

cubic yards

1

$7.82

 

 

Install Geosynthetic Clay Liner Cap

 

square feet

1

$0.49

 

c

Construct Landfill Gas Venting Layer

 

 

 

 

 

 

Place Sand or

 

acres

1

$35,852.60

 

 

Install Net and Geotextile

 

square feet

1

$0.35

 

d

Install Passive Landfill Gas Vents

 

acres

1

$858.88

 

e

Install Flexible Membrane Liner

 

square feet

1

$0.38

 

f

Drainage Layer

 

 

 

 

 

 

Place Sand or

 

acres

1

$35,852.60

 

 

Install Net and Geonet

 

square feet

1

$0.35

 

g

Place On-site Topsoil

 

cubic yards

1

$2.07

 

 

Place Off-site Topsoil

 

cubic yards

1

$16.55

 

h

Establish vegetative cover, including on- and off-site borrow areas

 

acres

1

$508.84

 

4

Drainage/erosion control

 

 

 

 

 

a

Construct Terraces

 

linear feet

1

$8.67

 

b

Construct Letdown Channels

 

linear feet

1

$8.14

 

c

Clean Perimeter Drainage Ditches

 

linear feet

0.50

$6.60

 

5

Tasks Not Identified

 

 

 

 

 

6

Subtotal

 

 

 

 

 

7

Administrative Services

1

lump sum

0.10

g

 

8

Technical and Professional Services

1

lump sum

0.12

g

 

9

Closure Contingency

1

lump sum

0.10

g

 

10

Total Final Closure

 

 

 

 

h

 

a     Multipliers are determined from the Solid Waste Financial Assurance Program Report, December 22, 2000.

b     Unit costs include a 1.76% inflationary adjustment for 2013.

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.

Table I.1   Post-closure Cost Estimate

 

Facility Name:

 

Permit Number:

 

Task/Service

Quantity

Units

Multipliera

Unit Costb

Subtotal

1

Site maintenance

 

 

 

 

 

a

Site Inspections

 

4

 

per year

30

 

8

 

$615.20

$73,824.00

 

$19,686.40

b

General Maintenance

 

1

 

per year

30

 

8

 

$1,844.42

$55,332.60

 

$14,755.36

c

Remediation and/or Gas Control Equipment

 

1

 

lump sum

 

0.3c

 

d

 

2

Monitoring equipment

 

 

 

 

 

a

Rework/Replace Monitoring Well(s)

 

VLF

0.25

$71.58

 

b

Plug Abandoned Monitoring Well(s)

 

VLF

0.25

$28.47

 

c

Final Plugging of Monitoring Wells

 

VLF

1

$28.47

 

d

Rework/Replace Methane Probe(s)

 

VLF

0.25

$61.41

 

e

Plug Abandoned Methane Probe(s)

 

VLF

0.25

$22.44

 

f

Final Plugging of Methane Probes

 

VLF

1

$22.44

 

g

Final Plugging of Piezometer(s)

 

VLF

1

$22.44

 

3

Sampling and analysis

 

 

 

 

 

a

Groundwater Monitoring Wells

 

 

wells

60

 

16

$663.37 

e

   $163.73

 

 

 

 

b

Methane Gas Probes

 

probes

60

$43.04

 

c

Surface Water Monitoring Points

 

points

60

$79.95

 

d

Leachate

 

sample

60

$128.82

 

4

Final cover maintenance

 

 

 

 

 

a

Mow and Fertilize Vegetative Cover

 

 

acres

30

 

8

 

$203.52

 

b

Repair Erosion, Settlement, and Subsidence for On-site Soils

 

 

acres

30

 

8

 

$2.95

 

 

Repair Erosion, Settlement, and Subsidence for Off-site Soils

 

 

acres

30

 

8

 

$17.65

 

c

Reseed Vegetative Cover

 

acres

0.20

$508.83

 

5

Leachate management

 

 

 

 

 

a

Clean Leachate Line(s)

1

per year

30 (30 yrs)

$1,577.55

$47,326.50

b

Maintain Leachate Collection System and Equipment

 

1

 

per year

 

30 (30 yrs)

 

$2,450.79

 

$73,523.70

c

Collect, Treat, Transport, and Dispose of Leachate

 

 

gal/yr

 

30

 

$0.32

 

6

Tasks not identified

 

 

 

 

 

7

Subtotal

 

 

 

 

 

7

Administrative Services

1

lump sum

0.06

f

 

8

Technical and Professional Services

 

1

 

lump sum

 

0.07

 

f

 

9

Post-closure Contingency

1

lump sum

0.10

f

 

10

Total Post-closure

 

 

 

 

g

 

a     Multipliers are determined from the Solid Waste Financial Assurance Program Report, December 22, 2000.

b     Unit costs include a 1.76% inflationary adjustment for 2013.

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.