2402_IP_FACostEstimate_20201207

2020 UPDATE
AZCOM
Closure, Post -Closure Cost Estimation Form
IP - Riegelwood Landfill
Permit Number: 24-02
865 John L. Riegel Road, Riegelwood, NC
2020 UPDATE PREPARED BY: J. Bove DATE: 12/7/2020
NCDEQ INFLATION RATE FOR 2020: 1.017 %
Closure Cost
30 Year Post
2020
ClosureCost
TOTAL
Estimate
Estimate
Old Unlined Site Closure*
$
-
$
1,001,302
$
1,001,302
Cell 1 Closure
$
5,203,826
$
1,710,258
$
6,914,084
Cell 2 Closure
$
4,230,504
$
943,898
$
5,174,402
Assessment & Corrective
$
-
$
2,000,000
Action Contingency (3)
TOTAL
$
9,434,330
$
5,655,459
$
15,089,788
* Post Closure Period Starting 2010
NOTES:
1. Costs provided reflect largest landfill area permitted for construction and/or operation.
2. All costs in 2020 Dollars including NCDEQ approved Inflation Factor added
to totals.
3. 30 Year Long Term Care Includes $2,000,000 for "potential assessment and corrective
action" per NC GS 130A-295.2(h).
Per NCDEQ:
Effective January 1, 2020, the INFLATION FACTOR PRICE
DEFLATOR/MULTIPLIER = 1.017
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
ACO
Worksheet 2: FORMAT FOR THE ESTIMATION OF POST -CLOSURE COSTS
Facility Name: Unlined Area - Riegelwood Landfill Post -Closure Cost Estimate
Permit Number: 24-02
Facility Address: 865 John L. Riegel Road, Riegelwood, NC
FACILITY CLOSURE DATE: 2009
START POST CLOSURE PERIOD: 2010
County Administrator:
OPM Representative Completing
Format: 0
Date Completed: 11-Dec-12
Updated: 7-Dec-20
Sanitary and Industrial Landfills: Closure Costs - all sections except Section X
Post -Closure - all sections
CDD Landfills: Closure Costs - Sections X, XII, XIII, XIV, XV, XVI, XVII
Post -Closure - all sections
L GROUNDWATER MONITORING
a. Total number of monitoring wells
Total number of sampling events per
b. year
c. Other samples (e.g., QA/QC)
d. Analysis costs
e. Total analysis costs
$10,000 or as
f. Miscellaneous engineering fees/report required
g. Mobilization 0.00
h. Technician field costs $0.00
i. Total sampling costs (g x b) + (h x a x b)
Total Yearly Groundwater Monitoring
k Cost (e + f + i)
❑, LANDFILL GAS MONITORING
a. Frequency of Testing
b. Cost of sampling per round
c. Total Gas Monitoring Cost Per Year (a x b)
III. LEACHATE MANAGEMENT
a. Private disposal unit cost
b. POTW disposal unit cost
c. Direct discharge to POTW unit cost
Amount of leachate generated from
d. facility records or modeling
e. Hauling cost
f. Total leachate management cost
NOT APPLICABLE
samples/event
$/sample
(b+c) x d
(gxb)+(hxax
b)
$/gallon
$/gallon
$/gallon
$/gallon
0 wells
0 samples/yr
0 samples/yr
$0.00 /sample
$0.00
$0.00
$0.00 /event
$0.00 /well
$0.00
0.00 /yr
(Covered in Cell 1
Post -closure)
0 rounds/yr
$0.00 /round
$00 /yr
(Covered in Cell 1
Post -closure)
$0.00 /gallon
$0.00 /gallon
$0.00 /gallon
0 gallons/yr
$0.00 /gallon
LO /yr
C:\Users\john.bov \Desktop\Working\IP-RWECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.)ds

2020 UPDATE
IV. ROUTINE MAINTENANCE AND REPAIRS
a. Mowing frequency
2 I
usually 2
2 visits/yr
visits/year
b Area involved in maintenance and
55.6
55.6
acres
repairs
c. Mowing unit cost per visit
$350.00
$350.00
/acre/visit
d. Total Mowing Cost Per Year
a x b x c
$38,920.00
/yr
e. Fertilizer unit cost
$0
/acre
f. Total Fertilizer Cost Per Year
b x e
$0.00
/yr
assume 3% of
g. Area to reseed/year
1.7
total final cover
1.668
acres
to be re -seeded
per year
h. Reseeding unit cost
$4,400.00
$4,400.00
/acre
i. Total Reseeding Cost Per Year
x h
$7,339.20
/yr
k Mobilization/ Demobilization cost per
$0
/yr
y
year
usually 1 % of
I. Cap erosion repair
0.556
cap area/year
0.556
acres
Assumed
M. Erosion repair unit cost
$10,000.00
18"depth
$10,000.00
/acre
n. Total Erosion Repair Cost Per Year
(I x m)
$5,560.00
/year
0 Total Maintenance and Repairs Cost
(d + f + I+k+n)
$51,819
/yr
Per Year
V. VECTOR AND RODENT CONTROL
NOT APPLICABLE
Total Vector and Rodent Control
a. Costs Per Year
$2,000 or as required
L
/yr
Total Post -Closure Cost (TPCC)
City Cost Index (CCI) Appen B.= 100%=1
Adjusted Total Costs (ATC) = (CCI) x TPCC
Length of Post -Closure Care Period
_ $51,819 /yr
19
Total Post Closure Care Costs = ATC x Post Closure Period $984,565
C:\Users\john.bov \Desktop\Working\IP-RWECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.)ds

2020 UPDATE
AXOM'
Worksheet 1: FORMAT FOR THE ESTIMATION OF CLOSURE COSTS
Facility Name: Cell 1 - Riegelwood Landfill Closure Cost Estimate
Permit Number: 24-02
Facility Address: 865 John L. Riegel Road, Riegelwood, NC
Facility Owner: International Paper
OPM Representative Completing Format:
Date Completed: 11-Dec-12
Updated: 7-Dec-20
Sanitary and Industrial Landfills: Closure Costs - all sections except Section X
Post Closure - Post -Closure - all sections
CDD Landfills: Closure Costs - Sections X, XII, XIII, XIV, XV, XVI, XVII
Post Closure - Post -Closure - all sections
r'rFMLWTR tMbwT-TFrrREST WL-L7
BE CALCULATED FOR YOU*
1----------------------J
L
NATIVE SOIL FOR SLOPE AND FILL
a. Area to be capped 16.1
b. Depth of native soil for slope and fill 12
c. Quantity of native soil needed
d. Percentage of soil from off -site
100%
e'
Purchase Unit cost off -site material (to
$19.20
include delivery cost)
f.
Percentage of soil from on -site
0%
g.
Excavation unit cost (on -site material)
$3.85
h.
Total soil unit cost
i.
Placement and Spreading Unit Cost
$1.65
j.
Compaction unit cost
$1.10
k.
Total soil unit cost
I.
Total native soil cost
m.
Percent compaction
25%
0
Total Native Soil Cost
Notes and Guidance
Values
acres x 4840
yd2/acre=
inches x lyd/36in
a x b
per yd3
(1 - d)
per yd3
(dxe+fxg)
per yd3
per yd3
(h+I+j)
(h) x (I + l)
77924 yd2
0.33 yd
25975 yd3
100%
$19.20
0%
$3.85
$19.20
$1.65
$1.10
$21.95
$570,143.93
25%
712 680
/yd3
per yd3
per yd3
per yd3
/yd3
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
I/. TOPSOIL
a. Area to be capped
b. Depth of topsoil needed
c. Quantity of topsoil needed
d. Percentage of soil from off -site
Purchase Unit cost off -site material (to
e' include delivery cost)
f. Percentage of soil from on -site
g. Excavation unit cost (on -site material)
h. Total soil unit cost
i. Placement and Spreading Unit Cost
j. Compaction unit cost
k. Total soil unit cost
I. Total soil cost
m. Percent compaction
o Total Topsoil Cost
Ill. DIVERSION BERMS
b. Length of Diversion Berm
c. Quantity of compacted fill needed
d Purchase unit cost for material or
excavation cost
e Delivery Cost (for delivery of off -site
material; dependent upon haul distance)
f. Spreading unit cost for material
g. Compaction unit cost for material
h. Total material cost
i. Percent compaction
j Total Drainage Layer Cost
IV. ON -SITE CLAY
a. Area to be capped
b. Depth of clay needed
c. Quantity of clay needed
d. Excavation unit cost
e. Placement/spreading unit cost
f. Compaction unit cost
g. Total on -site clay unit cost
h. Percent compaction
i. Total On -Site Clay Cost
16.1 acres x 4840 yd2/acre
6 in x 0.028 yd/in
a x b
100%
$19.20
0%
$0.00
$2.85
$1.10
25%
4475
$0.00
$19.20
$4.50
$1.20
25%
0
0
0
11 25%
per yd3
(1 - d)
per yd3
(dxe+fxg)
per yd3
per yd3
(h+I+j)
(h) x (1 + 1)
LF
yd3
per yd3
per yd3
per yd3
per yd3
(d+e+f+g)
(%/100)
[cxhx(1 +i)]
NOT APPLICABLE
acres x 4840 yd2
in x (1/36)yd
a x b
per yd3
per yd3
per yd3
(d+e+f)
%/100
[cxgx(1+h)]
77924 yd2
0.17 yd
12987 yd3
100%
$19.20 /yd3
0%
$0.00
$19.20
$2.85
$1.10
$23.15
$300,656.77
25%
375 821
per yd3
per yd3
per yd3
/yd 3
4475
ft
12099
yd3
$0.00
per yd3
$19.20
per yd3
$4.50 per yd3
$1.20 per yd3
$24.90 per yd3
25%
376 584
0
yd2
0.00
yd
0
yd3
$0.00
per yd3
$0.00
per yd3
$0.00
per yd3
$0.00
per yds
25%
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
V. OFF -SITE CLAY
a. Area to be capped
b. Depth of clay needed
c. Quantity of clay needed
d. Purchase unit cost
e. Delivery unit cost (for off -site material)
f. Placement/spreading unit cost
g. Compaction unit cost
h. Total off -site clay unit cost
i. Percent compaction
j. Total Off -Site Clay Cost
Vl. VENT PIPING
a. Length of drainage tile needed
b. Tile unit cost
c. Trenching and backfilling cost
d. Total drainage tile unit cost
e. Total Drainage Tile Cost
Vll. SYNTHETIC MEMBRANE
a. Area to be capped with FML
b. Purchase unit cost
c. Installation unit cost
d. Total synthetic membrane unit cost
e. Total Synthetic Membrane Cost
Vlll. GEOTEXTILE FILTER FABRIC
a. Quantity of filter fabric needed
b. Purchase unit cost
c. Installation unit cost
d. Total geotextile filter fabric unit cost
e. Total Geotextile Filter Fabric Cost
Vlll.-a GEONET COMPOSITE
a. Quantity of Geonet Composite needed
b. Purchase Unit Cost
C. Installation Unit Cost
d. Total Geonet Composite unit cost
e Total Geonet Composite cost
NOT APPLICABLE
acres x 4840 yd2
0
yd2
in x (1/36)yd
0
yd
a x b
0
yd3
per yd3
$0.00
per yd3
per yd3
$0.00
per yd3
per yd3
$0.00
per yd3
per yd3
$0.00
per yd3
(d + e + f + g)
$0.00
per yd3
25%
%/100
25%
[cxhx(1 +i)]
2500
LF
2500
LF
$1.85
per LF
$1.85
per LF
$5.26
per LF
$5.20
per LF
(b+c)
$7.05
per LF
(a x d)
$17,625
16.1
acres x 43560 ft2/acre
701316
ft2
$0.30
$0.30
/ft2
$0.13
$0.13
/ft2
(b + c)
$0.43
/ft2
(a x d)
$301,566
acres x 43560
ft2/acre=
0
ft2
$0.00
/ft2
$0.00
/ft2
(b + c)
$0.00
/ft2
(axd)
16.1 acres x 43560ft2/acre
701316
ft2
0.36
$0.36
/ft2
0.11
$0.11
/ft2
(b + c)
$0.47
/ft2
(a x d)
$329,619
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
Vlll.-b GEOSYNTHETIC CLAY LINER
a. Quantity of liner needed
b. Purchase unit cost
c. Installation unit cost
d. Total Clay Liner unit cost
e. Total clay liner cost
IX. SOIL ADMIXTURE
a. Area to be capped
b. Soil admixture unit cost
c. Total Soil Admixture Cost
X. VEGETATIVE SUPPORT SOIL
a. Area to be capped
b. Depth of soil needed
c. Quantity of soil needed
d. Percentage of soil from off -site
NOT APPLICABLE
acres x 43560 ft2/acre
(b+c)
(axd)
NOT APPLICABLE
acres x 4840 yd2
per yd2
(a x b)
aced over Synthetic Membrane)
16.1 acres x 4840 yd2/acre
18 in x (1/36)yd
(a x b)
Purchase Unit cost off -site material (to
e. include delivery cost)
f. Percentage of soil from on -site
g. Excavation unit cost (on -site material)
h. Total soil unit cost
i. Placement and Spreading Unit Cost
j. Compaction unit cost
k. Total soil unit cost
I. Total soil cost
m. Percent compaction
o Total Topsoil Cost
Xl. SOIL TESTING
a. Number of acres to be capped
Testing unit cost (includes permeability
b. tests and technician)
c. Total Soil Testing Unit Cost
Xll. VEGETATIVE COVER
a. Number of acres to be vegetated
b Unit cost for soil preparation, grading,
seed, and fertilizer
c. Total Vegetative Cover Cost
100% 1 %
$19.20
0%
$2.75
$1.10
25%
per yd3
(1 - d)
per yd3
(dxe+fxg)
per yd3
per yd3
(h+I+j)
(h) x (I + l)
16.1
$3,200
(a x b)
16.1
$3,850.00
(a x b)
0
$0.00
$0.00
$0.00
0
$0.00
ft2
/ft2
/ft2
/ft2
yd2
per yd2
77924
yd2
0.50
yd
38962
yd3
100%
$19.20 /yd3
0%
$0.00
$19.20
$2.75
$1.10
$23.05
$898,074.10
25%
$1,122, 593
per yd3
per yd3
per yd3
/yd3
16.1 acres
$3,200.00 per acre
51 520
16.1 acres
$3,850.00 per acre
61 985
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
Xlll. LANDFILL GAS (LFG) MANAGEMENT
SYSTEM
a. Number of acres of landfill to be closed
b Number of LFG detection probes to be
installed
C.
Average number of LFG vents required per
acre
d. Average cost per LFG vent
e. Average LFG detection probe unit cost
f. Total cost for LFG vents
g. Total cost for LFG detection probes
h. Total Gas Management System Cost
Sanitary Max. Spacing = 250 ft
CDD/Industrial Max. Spacing = 500 ft
XIV. GROUNDWATER MONITORING SYSTEM
Hydrogeologic study unit cost (includes
a. boring costs, piezometer costs, pump test
costs, etc.)
Monitoring well construction unit cost
b (includes installation and materials for a 50'
deep well; minimum of four wells must be
installed)
c. Number of wells to be installed
d. Additional well length over 50'
e. Unit cost for additional well length over 50'
f. Total additional cost for well length over 50'
g. Total Monitoring Well Construction Cost
Total Groundwater Monitoring System
h" Cost
XV. MOBILIZATION/ DEMOBILIZATION
a. Cost for Mobilization/ Demobilization
XVI. SURVEY AND DEED NOTATION
a. Cost for Survey and Deed Notation
XVIL CLOSURE CERTIFICATION
a. Closure Certification Costs
NOT APPLICABLE
0 0 acres
(every 500' around
0 wells
cell)
1
1 vents
$0.00
$0.00 per vent
$0.00 per probe
(axcxd)
$0.00
(b x e)
$0.00
(f + g)
Lo
INCLUDED IN POST
CLOSURE
per well
wells
LF
per VLF
(e x d) $0.00
(b x c) $0.00
(bx0+(dxe) 0.00
Max 5% of total 170,000
construction costs
$1,100/acre 17,600
Included with 0
Engineering costs —
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
XVlll. MISCELLANEOUS COSTS TO CLOSE
Erosion Control
a. Rolled Erosion Control Products
b. Downpipes & Culverts
c. RipRap (tons)
d. Strip Drain (If)
e Storm Water Control
f Total Miscellaneous Costs
TOTAL CONSTRUCTION CLOSURE
COSTS
Total Unadjusted Closure Costs
TUCC =
(1+I1... XIV)
Citv Cost Index (CCI1 ADDen B.=
1 = 100 %
Total Adjusted Closure Costs (TACC)=
CCI x TUCC
Closure Cost Estimate Subtotal=
(TA CC +XV.... XVlll)
Contingency 00%)=
(Subtotal x 0.1)
Engineering Fees=
Construction Documents(5% or as
needed)
Construction Quality Assurance (10% or
as needed)
Total Closure Cost=
(Subtotal +Contingency + Engineering)
12ac*43560/9 $15,000 or as required
*$2.25/SY
1,462
$225
500
$75
5,000
$4.75
crossings
$5,000 or as requirec
(sum(a: d)
(Subtotal x 0.05)
(Subtotal x 0.1)
130,680
328,950
37,500
23,750
35,000
555,880
3 349 992
0
3,349,992
4,093,47
409,34
204,6
409,34
r---------0
1 $ 5,116, 839 1
I I
LF
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill2020 Financial Cost Update 12-07-2020.xls

2020 UPDATE
L
H
AXO
Worksheet 2: FORMAT FOR THE ESTIMATION OF POST -CLOSURE COSTS
Facility Name: Cell 1 - Riegelwood Landfill Post -Closure Cost Estimate
Permit Number: 24-02
Facility Address: 865 John L. Riegel Road, Riegelwood, NC
0
0
County Administrator:
OPM Representative Completing
Format: 0
Date Completed: 11-Dec-12
Updated: 7-Dec-20
Sanitary and Industrial Landfills: Closure Costs - all sections except Section X
Post -Closure - all sections
CDD Landfills: Closure Costs - Sections X, XII, XIII, XIV, XV, XVI, XVII
Post -Closure - all sections
"";PrLL7N-RbSC T[4rPSgr
I WILL BE CALCULATED FOR!
YOU*01
GROUNDWATER MONITORING
a. Total number of monitoring wells
b Total number of sampling events
per year
c. Other samples (e.g., QA/QC)
d Analysis Costs (see worksheet 3 for
minimum defaults)
e. Total analysis costs
Miscellaneous engineering
f' fees/report
g. Mobilization
h. Technician field costs
i. Total sampling costs
k Total Yearly Groundwater
Monitoring Cost
LANDFILL GAS MONITORING
a. Frequency of Testing
b. Cost of sampling per round
Total Gas Monitoring Cost Per
C. Year
111. LEACHATE MANAGEMENT
a. Private disposal unit cost
b. POTW disposal unit cost
Direct discharge to POTW unit
C. cost
$18,600.00
samples/event
$/sample
(b+c) x d
$10,000 or as
required
(g x b) + (h x a x b) (g x b) + (h x a x b)
(e+f+i)
2
$0.00
(a x b)
F_ $0.0001
I F_
0 wells
0 samples/yr
0 samples/yr
$0.00 /sample
$0.00
$18,600.00
$0.00 /event
$0.00 /well
$0.00
$18,600.00
/yr
2
rounds/yr
$0.00
/round
$00
/yr
(Covers Old Cell, Cell 1 &
2 Gas monitoring costs)
$/gallon $0.0001
/gallon
$/gallon $0.00
/gallon
$/gallon $0.00
/gallon
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.xis

2020 UPDATE
Amount of leachate generated
d' from facility records or modeling
e. Pumping cost
f. Total leachate management cost
IV. ROUTINE MAINTENANCE AND I
a. Mowing frequency
b Area involved in maintenance and
repairs
c. Mowing unit cost per visit
d. Total Mowing Cost Per Year
e. Fertilizer unit cost
f. Total Fertilizer Cost Per Year
V.
g. Area to reseed/year
h. Reseeding unit cost
i. Total Reseeding Cost Per Year
k Mobilization/ Demobilization cost
per year
I. Cap erosion repair
m. Erosion repair unit cost L
Total Erosion Repair Cost Per
n' Year
0 Total Maintenance and Repairs
Cost Per Year
VECTOR AND RODENT CONTROL
2,535,491
$0.001
2
16.1
$350.00
a x b x c
(b x e)
$/gallon
usually 2 visits/year
assume 20% of total
3.22 final cover to be re-
seeded per year in
years 0-5
$4,400.00
(Ixm)
(d + f + I+k+n)
a Total Vector and Rodent Control $2, 000 or as required
Costs Per Year
Total Post -Closure Cost (TPCC)
City Cost Index (CCI) Appen 100%=1
B.=
Adjusted Total Costs (ATC) = (CCI) x TPCC
assume 5% of total
final cover to erosion
repair per year in
year 0-5
Assumed 18"depth
2,535,491 gallons/yr
$0.001 /gallon
2 468 /yr
2 visits/yr
16.1 acres
$350.00 /acre/visit
$11,270.00 /yr
$0 /acre
$0.00 /yr
3.22 acres
$4,400.00 /acre
$14,168.00 /yr
$0 /yr
0.805 acres
$10,000.00 /acre
$8,050.00 /year
33 488 /yr
1500 /yr
IF- 56 056
1
$56,056 /yr
Length of Post -Closure Care Period 3011
Total Post Closure Care Costs = ATC x Post Closure Period $1,681,670
L---------------J
C:\Users\john.bove\Desktop\Working\IP-RWECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.xis

2020 UPDATE
Worksheet 1: FORMAT FOR THE ESTIMATION OF CLOSURE COSTS
Facility Name: Cell 2 - Riegelwood Landfill Closure Cost Estimate
Permit Number: 24-02
Facility Address: 865 John L. Riegel Road, Riegelwood, NC
Facility Owner: International Paper
OPM Representative Completing Format:
Date Completed: 11-Dec-12
Updated: 7-Dec-20
Sanitary and Industrial Landfills: Closure Costs - all sections except Section X
Post Closure - Post -Closure - all sections
CDD Landfills: Closure Costs - Sections X, XII, XIII, XIV, XV, XVI, XVII
Post Closure - Post -Closure - all sections
*'rMT_ rrFlrMtffeT'TFEIMSTWM O
BE CALCULATED FOR YOU*
- - - - - - - - - - - - - - - - - - - - - -
L
Notes and Guidance
NATIVE SOIL FOR SLOPE AND FILL
Values
a. Area to be capped
acres x 4840
13
yd2/acre=
62920
yd2
b. Depth of native soil for slope and fill
12
inches x lyd/36in=
0.33
yd
C.
Quantity of native soil needed
a x b
20973
yd3
d. Percentage of soil from off -site
100%
%
100%
e.
Purchase Unit cost off -site material (to
$19.20
include delivery cost)
per yd3
$19.20
/yd3
f. Percentage of soil from on -site
0%
(1 - d)
0%
g. Excavation unit cost (on -site material)
$3.85
per yd3
$3.85
per yd3
h. Total soil unit cost
(d x e + f x g)
$19.20
i. Placement and Spreading Unit Cost
$1.65
per yd3
$1.65
per yd3
j. Compaction unit cost
$1.10
per yd3
$1.10
per yd3
k. Total soil unit cost
(h + I + j)
$21.95
/yd3
I. Total native soil cost
$460,364.67
m. Percent compaction
25%
25%
0 Total Native Soil Cost
(h) x (1 +
$575,456
H. TOPSOIL
a. Area to be capped
13
acres x 4840 yd2/acre
62920
yd2
b. Depth of topsoil needed
6
in x 0.028 yd/in
0.17
yd
c. Quantity of topsoil needed
a x b
10487
yd3
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2020 UPDATE
d. Percentage of soil from off -site
100%
%
100%
e.
Purchase Unit cost off -site material (to
$19.20
per yd3
$19.20
/yd3
include delivery cost)
f. Percentage of soil from on -site
0%
(1 - d)
0%
g. Excavation unit cost (on -site material)
$0.00
per yd3
$0.00
per yd3
h. Total soil unit cost
(d x e + f x g)
$19.20
i. Placement and Spreading Unit Cost
$2.85
per yd3
$2.85
per yd3
j. Compaction unit cost
$1.10
per yd3
$1.10
per yd3
k. Total soil unit cost
(h + I + j)
$23.15
/yd3
I. Total soil cost
$242,766.33
m. Percent compaction
25%
25%
0 Total Topsoil Cost
(h) x (1 +
$303,458
Ill. DIVERSION BERMS
a. Length of Diversion Berm
3930
LF
3930
ft
b. Quantity of compacted fill needed
yd3
10626
yd3
C. Purchase unit cost for material or
excavation cost
$0.00
per yd3
$0.00
per yd3
d Delivery Cost (for delivery of off -site
$19.20
per yd3
$19.20
per yd3
material; dependent upon haul distance)
e. Spreading unit cost for material
$4.50
per yd3
$4.50
per yd3
f. Compaction unit cost for material
$1.20
per yd3
$1.20
per yd3
g. Total material cost
(d + e + f + g)
$24.90
per yd3
h. Percent compaction
25%
(%/100)
25%
i. Total Drainage Layer Cost
[c x h x (1 +i)]
$330,720
IV. ON -SITE CLAY
NOT APPLICABLE
a. Area to be capped
acres x 4840 yd2
0
yd2
b. Depth of clay needed
in x (1/36)yd
0.00
yd
c. Quantity of clay needed
a x b
0
yd3
d. Excavation unit cost
per yd3
$0.00
per yd3
e. Placement/spreading unit cost
per yd3
$0.00
per yd3
f. Compaction unit cost
per yd3
$0.00
per yd3
g. Total on -site clay unit cost
(d + e + f)
$0.00
per yds
h. Percent compaction
25%
%/100
25%
i. Total On -Site Clay Cost
[c x g x (1 +h)]
V. OFF -SITE CLAY
NOT APPLICABLE
a. Area to be capped
acres x 4840 yd2
0
yd2
b. Depth of clay needed
in x (1/36)yd
0
yd
c. Quantity of clay needed
a x b
0
yd3
d. Purchase unit cost
per yd3
$0.00
per yd3
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2020 UPDATE
e. Delivery unit cost (for off -site material)
per yd3
$0.00
per yd3
f. Placement/spreading unit cost
per yd3
$0.00
per yd3
g. Compaction unit cost
per yd3
$0.00
per yd3
h. Total off -site clay unit cost
(d + e + f + g)
$0.00
per yd3
i. Percent compaction
25% %/100
25%
j. Total Off -Site Clay Cost
[c x h x (1 + i)]
$0
Vl. VENT PIPING
a. Length of drainage tile needed
1550 LF
1550
LF
b. Tile unit cost
F77F5 per LF
$1.85
per LF
c. Trenching and backfilling cost
$5.20 per LF
$5.20
per LF
d. Total drainage tile unit cost
(b+c)
$7.05
per LF
e. Total Drainage Tile Cost
(a x d)
$10,928
Vll. SYNTHETIC MEMBRANE
a. Area to be capped with FML
13 acres x 43560 ft2/acre
566280
ft2
b. Purchase unit cost
$0.30
$0.30
/ft2
c. Installation unit cost
$0.13
$0.13
/ft2
d. Total synthetic membrane unit cost
(b + c)
$0.43
/ft2
e. Total Synthetic Membrane Cost
(a x d)
$243,500
Vlll. GEOTEXTILE FILTER FABRIC
a. Quantity of filter fabric needed
acres x 43560
ft2/acre=
0
ft2
b. Purchase unit cost
$0.00
/ft2
c. Installation unit cost
$0.00
/ft2
d. Total geotextile filter fabric unit cost
(b + c)
$0.00
/ft2
e. Total Geotextile Filter Fabric Cost
(a x d)
Vlll.-a GEONET COMPOSITE
a. Quantity of Geonet Composite needed
13 acres x 43560ft2/acre
566280
ft2
b. Purchase Unit Cost
$0.36
$0.36
/ft2
C. Installation Unit Cost
$0.11
$0.11
/ft2
d. Total Geonet Composite unit cost
(b + c)
$0.47
/ft2
e Total Geonet Composite cost
(a x d)
$266,152
Vlll.-b GEOSYNTHETIC CLAY LINER
NOT APPLICABLE
a. Quantity of liner needed
acres x 43560 ft2/acre
0
ft2
b. Purchase unit cost
$0.00
/ft2
c. Installation unit cost
$0.00
/ft2
d• Total Clay Liner unit cost
(b + c)
$0.00
/ft2
e. Total clay liner cost
(a x d)
$00
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IX.
X.
DOWN PIPES (EAST SLOPE)
a. Drop pipes and Headwalls, per unit
b. Aggregate
c. Total Soil Admixture Cost
a. Area to be capped
b. Depth of soil needed
c. Quantity of soil needed
d. Percentage of soil from off -site
Purchase Unit cost off -site material (to
e. include delivery cost)
f. Percentage of soil from on -site
g. Excavation unit cost (on -site material)
h. Total soil unit cost
i. Placement and Spreading Unit Cost
j. Compaction unit cost
k. Total soil unit cost
I. Total soil cost
m. Percent compaction
o Total Topsoil Cost
Xl. SOIL TESTING
a. Number of acres to be capped
b. Testing unit cost (includes permeability
tests and technician)
c. Total Soil Testing Unit Cost
Xll. VEGETATIVE COVER
a. Number of acres to be vegetated
b.
Unit cost for soil preparation, grading,
seed, and fertilizer
c. Total Vegetative Cover Cost
Xlll. LANDFILL GAS (LFG) MANAGEMENT
SYSTEM
a. Number of acres of landfill to be closed
b. Number of LFG detection probes to be
installed
C. Average number of LFG vents required per
acre
d. Average cost per LFG vent
e. Average LFG detection probe unit cost
2020 UPDATE
MODIFIED FINAL
COVER
3
30 10 tons/unit
(a x b)
13
acres x 4840 yd2/acre
18
in x (1/36)yd
(a x b)
100%
%
$19.20
per yd3
0%
(1 - d)
per yd3
(dxe+fxg)
$2.75
per yd3
$1.10
per yd3
(h+I+j)
11 25%
(h) x (I + l)
13
=$3,200
(a x b)
13
$3,850.00
(a x b)
NOT APPLICABLE
$4,800.00
$2,050.00
16 450
62920
0.50
31460
100%
per unit
ton
yd2
yd
yd3
$19.20 /yd3
0%
$0.00
$19.20
$2.75
$1.10
$23.05
$725,153.00
25%
906 441
per yd3
per yd3
per yd3
/yd 3
13 acres
$3,200.00 per acre
41 600
13 acres
$3,850.00 per acre
50 050
0 acres
0 wells
1 vents
$0.00 per vent
$0.00 per probe
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2020 UPDATE
X/V.
f• Total cost for LFG vents
g. Total cost for LFG detection probes
h. Total Gas Management System Cost
Sanitary Max. Spacing = 250 ft
CDD/Industrial Max. Spacing = 500 ft
GROUNDWATER MONITORING SYSTEM
a. Hydrogeologic study unit cost (includes
boring costs, piezometer costs, pump test
costs, etc.)
b. Monitoring well construction unit cost
(includes installation and materials for a 50'
deep well; minimum of four wells must be
installed)
c. Number of wells to be installed
d. Additional well length over 50'
e.
Unit cost for additional well length over 50'
f.
Total additional cost for well length over 50'
g. Total Monitoring Well Construction Cost
h. Total Groundwater Monitoring System
Cost
XV MOBILIZATION/ DEMOBILIZATION
a. Cost for Mobilization/ Demobilization
XVI. SURVEY AND DEED NOTATION
a. Cost for Survey and Deed Notation
XVII. CLOSURE CERTIFICATION
a. Closure Certification Costs
XVlll. MISCELLANEOUS COSTS TO CLOSE
a. Erosion Control
Rolled Erosion Control Products
b. Downpipes & Culverts
c. RipRap (tons)
d. Strip Drain (If)
e. Storm Water Control
f. Total Miscellaneous Costs
(axcxd)
$0.00
(b x e)
$0.00
(f + g)
$0
INCLUDED IN POST
CLOSURE
(e x d) $0.00
(b x c) $0.00
(bx0+(dxe) 0.00
Max 5% of total 141,000
construction costs
$1,100/acre ii 14,300
Included with 0
Engineering costs
10ac*43560/9 $15,000 or as required
*$2.25/SY
1,000
$225
500
$75
4,500
$4.75
crossings
$5,000 or as requirec
(sum(a: d)
108,900
225,000
37,500
21,375
35,000
427,77
per well
wells
LF
per VLF
LF
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2020 UPDATE
TOTAL CONSTRUCTION CLOSURE
COSTS
Total Unadiusted Closure Costs
T( UCC)=
(I+II... XI V) $2, 744, 755
City Cost Index (CCI) Appen B.=
1 = 100 % 1
Total Adiusted Closure Costs (TACC)=
CCI x TUCC 2,744,755
Closure Cost Estimate Subtotal=
(TA CC +XV.... XVlll) 3,327,830
Contingency (10%)=
(Subtotal x 0.1) 332,783
Engineering Fees=
Construction Documents(5% or as
needed) (Subtotal x 0.05) 166,391
Construction Quality Assurance (10% or
as needed) (Subtotal x 0.1) 332,783
Total Closure Cost=
------ ,
(Subtotal +Contingency + Engineering) I $ 4,159, 787 I
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2020 UPDATE
AAZCO
Worksheet 2: FORMAT FOR THE ESTIMATION OF POST -CLOSURE COSTS
Facility Name: Cell 2 - Riegelwood Landfill Post -Closure Cost Estimate
Permit Number: 24-02
Facility Address: 865 John L. Riegel Road, Riegelwood, NC
0
0
County Administrator:
OPM Representative Completing
Format: 0
Date Completed: 11-Dec-12
Updated: 7-Dec-20
Sanitary and Industrial Landfills: Closure Costs - all sections except Section X
Post -Closure - all sections
CDD Landfills: Closure Costs - Sections X, XII, XIII, XIV, XV, XVI, XVII
Post -Closure - all sections
WILL BE CALCULATED FORD
YOU*I
L----------------- ._._I
1. GROUNDWATER MONITORING
a. Total number of monitoring wells
Total number of sampling events
b. per year
c. Other samples (e.g., QA/QC)
Analysis costs (see worksheet 3 for
d. minimum defaults)
e. Total analysis costs
Miscellaneous engineering
f. fees/report
g. Mobilization
h. Technician field costs
i. Total sampling costs
Total Yearly Groundwater
k Monitoring Cost
IL LANDFILL GAS MONITORING
a. Frequency of Testing
b. Cost of sampling per round
Total Gas Monitoring Cost Per
c. Year
Ill. LEACHATE MANAGEMENT
a. Private disposal unit cost
b. POTW disposal unit cost
Direct discharge to POTW unit
C. cost
Amount of leachate generated
d. from facility records or modeling
samples/event
$/sample
(b+c) x d
$10,000 or as
$0.00 required
(g x b) + (h x a x b)
(e+f+i)
$0.00
(a x b)
$0.0001
2,047,291
(gxb)+(hxax
b)
$/gallon
$/gallon
$/gallon
0 wells
0 samples/yr
0 samples/yr
$0.00 /sample
$0.00
$0.00
$0.00 /event
$0.00 /well
$0.00
0.00 /yr
(Covered in Cell 1
Post -closure)
0 rounds/yr
$0.00 /round
0.00 /yr
(Covered in Cell 1
Post -closure)
$0.0001 /gallon
$0.00 /gallon
$0.00 /gallon
2,047,291 gallons/yr
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UI
V.
2020 UPDATE
e. Hauling cost $0.001 $/gallon
f. Total leachate management cost
a. Mowing frequency
Area involved in maintenance and
b. repairs
Mowing unit cost per visit
C.
d. Total Mowing Cost Per Year
e. Fertilizer unit cost
f. Total Fertilizer Cost Per Year
Area to reseed/year
I•.
Reseeding unit cost
h.
i. Total Reseeding Cost Per Year
Mobilization/ Demobilization cost
k. per year
Cap erosion repair
I .
rn. Erosion repair unit cost
Total Erosion Repair Cost Per
n. Year
Total Maintenance and Repairs
0 Cost Per Year
VECTOR AND RODENT CONTROL
Total Vector and Rodent Control
2
13
$350.00
a x b x c
(I x m)
(d + f + I +k+n)
a. Costs Per Year $2, 000 or as required
Total Post -Closure Cost (TPCC)
t,rry L.vsr rnaex t�.�.r/ f►ppen
B-= 100%=1
Adjusted Total Costs (ATC) = (CCI) x TPCC
Length of Post -Closure Care Period
Total Post Closure Care Costs = ATC x Post Closure Period
usually 2
visits/year
me 20% of
final cover
re -seeded
fear in years
me 5% of
final cover
osion repair
fear in year
kssumed
18"depth
$0.001 /gallon
2 397 /yr
2 visits/yr
13 acres
$350.00 /acre/visit
$9,100.00 /yr
$0 /acre
$0.00 /yr
2.6 acres
$4,400.00 /acre
$11,440.00 /yr
$0 /yr
0.65 acres
$10,000.00 /acre
$6,500.00 /year
27 040 /yr
1500 /yr
30 937
1
$30,937 /yr
30
-------------
928 120
C:\Users\jchn.bove\Desktop\Working\IP-R\HECOM IP Riegelwood Landfill 2020 Financial Cost Update 12-07-2020.xis