6.2 SR 10-03-2022Request for Action
To
Item Number
Mayor and City Council
6.2
Agenda Section
Meeting Date
Prepared by
Presentations,
October 3, 2022
Suzanne Fischer, Environmental/Special Projects Director
Awards, and
Recognition
Item Description
Reviewed by
Waste Management's Operational Status
Matt Ledvina, Gestalt En r. & Peter Beck, City Attorney
Reviewed by
Cal Portner, City Administrator
Action Requested
Informational.
Background/Discussion
Waste Management submitted their Closure, Post Closure Contingency Action Plan, and Financial Assurance Plan
in August of 2022. The documents are intended to fulfill the MPCA requirements for closure, post closure, and
contingency action with financial assurance calculations. The plans are divided into the following sections:
Section 2 is the closure plan for the facility which include MPCA notification, schedule, procedures, and
certification. In addition, the closure costs are presented for purposes of establishing financial assurance needs.
Section 3 defines a Post -Closure Care Plan for the facility and evaluates costs associated with post -closure care. It
adjusts the costs to future dollars and summarizes a 20-year total for financial assurance purposes.
Section 4 defines a Contingency Action Plan and evaluates costs associated with each contingency. The financial
assurance evaluation includes proportional amounts reflecting the probability of each contingency, thereby
allowing contingency costs to be included in the financial assurance calculations.
Section 5 defines the financial assurance required for site closure, post -closure care, and contingency actions.
Financial assurance calculations included in this application were prepared in January 2022 and included as part of
the annual report. The financial assurance calculations are updated annually as part of the annual report.
Financial Impact
N/A
Mission/Policy/Goal
The Elk River Mission
Attachments
■ Elk River Landfill Closure, Post Closure Contingency Action Plan & Financial Assurance Plan
The Elk River Vision P 0 W E e E 0 0 V
A welcoming community rvitb revolutionary and spirzted resourcefulness, exceptional NATURE
service, and community engagement that encourages and inspires prosperz[ Updated. August 2020
6.2 at
® Stantec
CLOSURE, POST -CLOSURE,
CONTINGENCY ACTION PLAN AND
FINANCIAL ASSURANCE PLAN
Elk River Landfill, Inc.
August 2022
Prepared for:
Elk River Landfill, Inc.
224460 Highway 169 Northwest
Elk River, MN 55330
Prepared by:
Stantec Consulting Services Inc.
1800 Pioneer Creek Center
PO Box 249
Maple Plain, MN 55359
Phone: 763-479-4200
Project Number:
227705133
Table of Contents
1 INTRODUCTION........................................................................................................
1..................... 0
2 CLOSURE PLAN.......................................................................................................
2 ..................... 1
2.1 General.......................................................................................................................................2..................1
2.2 Notification Of Cell/Phase Closure.............................................................................................
2..................1
2.3 Notification Of Final Closure.......................................................................................................
2..................1
2.4 Closure Schedule.......................................................................................................................
2..................1
2.5 Closure Procedures....................................................................................................................
2..................2
2.6 Certification Of Cell/Final Closure..............................................................................................
2 ..................2
2.7 Deed Notation.............................................................................................................................
2 .................3
2.8 Amendment Of Closure Plan......................................................................................................
2..................3
2.9 Closure Cost Estimate................................................................................................................
2..................3
3 POST -CLOSURE PLAN............................................................................................
3.1
3.1 General.......................................................................................................................................3.1
3.2 Inspection And Maintenance......................................................................................................
3.1
3.3 Environmental Monitoring...........................................................................................................
3.1
3.3.1 Water Quality..............................................................................................................................
3.1
3.3.2 Surface Water.............................................................................................................................
3.2
3.3.3 Leachate.....................................................................................................................................
3.2
3.3.4 Leak Detection............................................................................................................................
3.2
3.4 Surface Water Runoff Control Facilities.....................................................................................
3.2
3.5 Final Cover Surface....................................................................................................................
3.2
3.6 Leachate System Management..................................................................................................
3.3
3.7 Gas Monitoring...........................................................................................................................
3.3
3.8 Reporting....................................................................................................................................
3.4
3.9 Ultimate Land Use......................................................................................................................
3.4
3.10 Amendment Of Post -Closure Plan.............................................................................................
3.4
3.11 Post -Closure Care Cost Estimate..............................................................................................
3.4
4 CONTINGENCY ACTION PLAN ........
4.1 General...............................................................
Contingencies That May Need Corrective Action .
Event -Triggered Contingencies .................................
4.2.2 Inspection -Triggered Contingencies .............
4.2.3 Monitoring -Triggered Contingencies ................
Corrective Actions .....................................................
4.3.1 Emergency Actions .....................................
4.3.2 Follow-up to Emergency Actions .....................
Events Not Requiring Emergency Action ..................
4.4 Action Levels ......................................................
Equipment Availability ...............................................
4.6 Amendment Of Contingency Plan ..............
4.7 Estimated Costs For Contingency Actions .
5 FINANCIAL ASSURANCE .................
.................................................................... 4.1
..................................................................... 4.1 4.2
................................................................. 4.1 4.2.1
.............................................................. 4.2
.................................................................... 5.1
BProject Number: 227705133
LIST OF TABLES
1 MSW Southern Development Area Design Volumes
2 Closure Cost Estimate
3 Post -Closure Costs
4A Event -Triggered Contingencies
413 Inspection -Triggered Contingencies
4C Monitoring -Triggered Contingencies
4D Contingency Action Cost Estimate
5 Post -Closure Cost Calculations
Project Number: 227705133
Introduction
This report consists of a Closure Plan, Post -Closure Plan, Contingency Action Plan, and the proposed
financial assurance for the Elk River Landfill (the Landfill) in Elk River. This report is intended to fulfill the
Minnesota Pollution Control Agency (MPCA) requirements for closure (Minnesota Rules (MR)
7035.2625), post -closure (MR 7035.2645 and 7035.2655), and contingency action (MR 7035.2615). Cost
estimates for closure, post -closure, and contingency action are included for financial assurance
calculations.
Section 2.0 of this document presents the Closure Plan for the facility. This Closure Plan includes MPCA
notification, schedule, procedures and certification. In addition, the closure costs are presented for
purposes of establishing financial assurance needs.
Section 3.0 of this document defines a Post -Closure Care Plan for the facility and evaluates costs
associated with post -closure care. It adjusts the costs to future dollars and summarizes a 20-year total for
financial assurance purposes.
Section 4.0 of this document defines a Contingency Action Plan and evaluates costs associated with
each contingency. The financial assurance evaluation includes proportional amounts reflecting the
probability of each particular contingency, thereby allowing contingency costs to be included in the
financial assurance calculations.
Section 5.0 of this document defines the financial assurance required for site closure, post -closure care
and contingency actions. Financial assurance calculations included in this application were prepared in
January 2022 and included as part of the annual report. The financial assurance calculations are updated
annually as part of the annual report.
The objectives of the closure, post -closure, and contingency action plans are to establish procedures to
be followed during each of the activities, and to establish a basis for determining the financial assurance
appropriate for the Landfill. Financial assurance in the form of a surety bond has been established for
actions on the property owned by Waste Management.
In
BProject Number: 227705133
2 Closure Plan
2.1 General
Closure of filled areas for the MSW and demolition/construction (C&D) cells is the responsibility of the
Landfill. Closure activities described below will take place sequentially as areas of the site are brought to
final grades. Minnesota Rules for Municipal Solid Waste Part 7035.2625 are used as a guide to
determine closure requirements.
Contact after closure is:
Elk River Landfill
District Manager
22460 Hwy 169 NW
Elk River, MN 55330
Phone: (763) 441-2464
A copy of the approved Closure Plan and all revisions to the Closure Plan will be kept at the facility until
closure is completed and certified. This Closure Plan supersedes any previous closure plans prepared for
this site.
2.2 Notification Of Cell/Phase Closure
The MPCA will be notified of impending cell or phase closure at least two weeks prior to initiation of
closure activities. Closure of the last currently permitted MSW cell (Cell 20 Phase 3) is anticipated to be
completed in 2028.
2.3 Notification Of Final Closure
Final closure at each area will begin within 30 days after receiving the last shipment of waste, weather
permitting. Final closure will be preceded by the following:
The MPCA Commissioner will be notified 90 days before closure activities begin.
A closure notice will be posted 60 days prior to closing. Date of closure and alternate disposal
sites will be indicated.
A notice of closure will be published in a local newspaper 30 days prior to closure. A copy will be
sent to the MPCA Commissioner.
2.4 Closure Schedule
The closure schedule is dependent on the waste flows and facility design. Closure will be initiated in a
phased approach, leaving only the operating cell(s) in an "open" condition. Independent cells, or portions
thereof, will be closed once filled to final elevation. The facility is expected to reach final capacity in the
MSW area in approximately the year 2028 given current projected MSW disposal rates. Per the
Conditional Use Permit with the City of Elk River, no MSW waste will be disposed in the MSW area after
December 31, 2030. All closure construction within the City of Elk River will be completed by December
31, 2031, unless an alternate schedule is agreed upon by both the City and the Landfill.
BProject Number: 227705133 2.1
The facility is not expected to reach final capacity in the C&D area for more than 25 years. However, this
projection is subject to change based on several factors.
2.5 Closure Procedures
Closure of each cell in the MSW and C&D disposal areas will be initiated upon reaching final grade
according to the closure requirements in the permit. Alternatively, a temporary cap may be installed with
final closure activities at a later date. The closure area surface will be brought to final grade and benched,
if not already done so, according to the design plans. Appropriate buffer layers to bring surface to final
grade will be placed during site operations. A summary of closure procedures is as follows:
Inspect soil buffer layer and supplement as necessary.
Install minimum 40-mil synthetic flexible membrane liner.
Install geonet drainage layer according to the design plans.
Grading and placement of 18 inches of soil fill.
Placement of 6 inches of vegetation supporting topsoil.
Seed and mulch the final covered area.
Landfill gas management features will be installed prior to or concurrently with the placement of final
cover according to the Landfill Gas Management Plan.
Any changes in the design will be incorporated into a re-evaluation of closure costs and the related
financial assurance calculations at the time of final cover construction.
At the time of final closure of the facility, all stored material, tires, appliances, etc. will be hauled to a
facility for recycling or an operating permitted disposal facility as appropriate. On -site structures which will
require removal upon closure will be evaluated as the site approaches final closure.
All temporary and final cover materials will comply with the requirements of applicable rules at the time of
construction (see construction specifications).
2.6 Certification Of Cell/Final Closure
Upon completion of activities for final closure of any cell, a closure documentation report, signed by a
professional engineer registered in the State of Minnesota, stating that the cell has been closed in
accordance with approved plans and specifications will be submitted to the MPCA as required by the
MPCA Solid Waste Rules Part 7035.2610.
Testing of the various components of the cover will be conducted and documented in accordance with
the Construction Quality Assurance/Quality Control Plan in effect at the time of final closure and in
accordance with applicable rules. The final closure construction documentation will be submitted to the
MPCA no later than 60 days following completion of final cell closure. The documentation will contain
record drawings, testing data, description of the construction process, and photographs of the major
aspects of the construction phase.
In addition, upon final closure of the facility, a detailed description, including a plat, will be recorded with
the Sherburne County Recorder. The description will include general types and location of wastes, depth
of fill, and other information of interest to future landowners. A copy of record drawings will be submitted
to the Sherburne County Recorder and the MPCA.
BProject Number: 227705133 2.2
2.7 Deed Notation
Sherburne County will record a notation on the deed to the property, or on some other instrument
normally examined during a title search. The notation will, in perpetuity, notify any potential purchasers of
the property of any special conditions or limitations for use of the site. The notation will include record
drawings for the facility. A copy of the notation carrying the County Recorder's seal will be included with
the final closure certification.
2.8 Amendment Of Closure Plan
A modified closure plan will be prepared and submitted to the MPCA for approval within 60 days of any
change or event that affects the Closure Plan. This applies to any change in the Operations and
Maintenance Plan or facility design affecting closure procedures, or whenever the expected year of
closure changes. In the case of this facility, the Closure Plan is reviewed on an annual basis during
preparation of the annual report and will be updated at the time of re -permitting to incorporate any
changes in operations, design or scheduling of closure.
2.9 Closure Cost Estimate
MPCA Rules Part 7035.2685 requires that a cost estimate be prepared for closure of the largest area that
may require closure. For purposes of financial assurance, it is assumed that 72 acres will require closure,
which provides for the largest, most expensive closure activity, as required by the MPCA Rules. Table 2
presents the estimated closure costs and justification for the proposed closure. Prices reflect past project
experience and those typical of construction projects in the area.
Closure cost estimates will be updated by March 1 of each year to adjust for inflation, areas previously
closed, and changes in design, closure plans, or site conditions which require changes in the cost
estimates.
BProject Number: 227705133 2.3
3 Post -Closure Plan
3.1 General
Waste Management or any successor will be responsible for the post -closure care of the site. Minnesota
Solid Waste Management Rules, Parts 7035.2645 and 7035.2655 are used as a guide to determine
postclosure requirements. The post -closure period begins after final closure certification and continues
for a period of at least 20 years from that date. A summary of the post -closure care program is provided
in the following text.
3.2 Inspection And Maintenance
Routine inspection of the site will occur at least four times a year (spring, summer, fall and winter). The
inspections will include observations of cover integrity (e.g., erosion of the final cover or problems with
vegetation quality); evaluation of settlement and surface water drainage; inspection of the leachate
collection system; inspection of the landfill gas extraction system; and inspection of monitoring systems
and site security features. Specific inspections of certain portions of the facility may be conducted on a
more frequent basis as required by other permits (i.e. air permit).
If a site inspection reveals any problems with leachate collection systems, landfill gas extraction system,
monitoring systems, security systems, or the final cover, appropriate corrective measures will be taken
as outlined in the Contingency Action Plan. In addition, routine maintenance, such as mowing to prevent
tree growth, and maintaining drainage way flow capacity, will be performed as needed. Any features
found to need repair or maintenance during the inspections will be promptly and properly repaired and
maintained. This includes, but is not limited to, security fencing, monitoring wells, active gas collection
systems, leachate collection systems, and surface water control structures.
Other inspection, monitoring, and maintenance practices are defined in the following sections for specific
facility features.
3.3 Environmental Monitoring
Groundwater monitoring, surface water monitoring and leak detection monitoring will be performed
according to the MPCA-approved environmental monitoring plan in place for the post -closure period. The
current Site -Specific Sampling and Analysis Plan (SAP), Barr Engineering, February 2021 (Appendix G
of the Operations and Maintenance Plan) should be referred to for a complete list of monitoring points,
parameters and monitoring schedule currently in place. This SAP will be updated in the future in
anticipation of closure and will outline the monitoring to be conducted during the post -closure period.
3.3.1 WATER QUALITY
The current groundwater monitoring network at the Landfill includes monitoring wells located around the
C&D and MSW areas. As the site is developed to both the north and south, additional monitoring wells
may be installed and some may be removed. The groundwater monitoring network will be modified as
needed, and will also be modified as the site enters the post -closure period. Currently, groundwater
monitoring wells are sampled three times per year (spring, summer, fall). During the post -closure period,
a set of groundwater monitoring wells will likely be monitored on a semi-annual to annual basis.
MProject Number: 227705133 3.1
The Landfill also currently samples a network of 14 residential wells located around the Landfill on an
annual basis. Monitoring of residential wells will likely be reviewed in the post -closure period.
3.3.2 SURFACE WATER
Surface water monitoring is currently conducted at two existing monitoring points during the spring,
summer, and fall monitoring events. The monitoring points are located in the Rice Lake wetland complex.
During the post -closure period, surface water monitoring will likely either continue to be conducted on a
semi-annual basis or switch to annual monitoring.
3.3.3 LEACHATE
Leachate is currently monitored in accordance with the MCES and MPCA permits, a City of Elk River
Industrial Wastewater Treatment Agreement, as well as the requirements for leachate recirculation (if
applicable). The leachate monitoring events are currently conducted quarterly with additional monthly
samples collected for compliance with some requirements of the MCES permit for off -site disposal and
City of Elk River direct connection disposal. Leachate monitoring is anticipated to follow a similar
schedule as long as leachate continues to be hauled or pumped off -site for treatment at a WWTF.
3.3.4 LEAK DETECTION
The facility lysimeters are currently monitored three times per year to coincide with water quality
monitoring. Leak detection lysimeters are currently located in existing cells 6 through 20. During the
postclosure period, lysimeter monitoring will likely be reduced to coincide with other monitoring
conducted onsite.
3.4 Surface Water Runoff Control Facilities
During post -closure, on -site benches, drainage ditches, swales, downslope structures, downslope piping,
and ponds will be inspected at least four times annually, and after major storm events, to determine any
need of maintenance. Maintenance associated with sediment accumulations or erosion problems will be
performed as needed. Sedimentation ponds will be cleaned as necessary (likely more often shortly after
closure, and less frequently towards the end of the post -closure care period).
3.5 Final Cover Surface
The final cover surface will be inspected at least four times annually for erosion and settlement. Surface
repairs will be performed as needed. Supplemental cover soil will be placed when needed due to erosion
and settlement. Seeding, fertilizing, and mulching of bare soil will be provided where required. MPCA will
be kept informed of the scheduled repairs.
Any and all areas that have been seeded, fertilized and mulched will be inspected quarterly to check for
erosion, to make sure that sustained vegetative growth has been established and continues to survive.
All erosion ruts or gullies, and general settlement areas of the final cover landfill area will be refilled with
suitable earth, graded and reseeded accordingly.
BProject Number: 227705133 3.2
3.6 Leachate System Management
The leachate handling systems collect leachate and transfer it to one of the leachate storage tanks.
Leachate is either recirculated through the waste in accordance with the recirculation plan or hauled to a
WWTF for treatment. The leachate collection system pipes will continue to be cleaned at a minimum of
once per year. Leachate will be sampled and analyzed in accordance with the SAP (Barr Engineering
Feb. 2021, or as modified).
The HELP model shows that after final closure, leachate generation approaches zero. This is due to the
extremely efficient performance of the FML/geonet combination. However, the tremendous number of
variables utilized in the HELP model usually allows only a gross approximation of leachate quantity.
Therefore, an alternative method for estimating post -closure leachate generation will be used. The other
method used to estimate leachate quantity is by direct comparison to existing landfills with leachate
collection. Using this latter method the MPCA suggests that appropriate estimations can be obtained by
expecting five percent of total precipitation which contacts a landfill final cover. Utilizing this method, the
maximum average annual leachate production for the facility during post -closure is estimated to be
4,655,325 gallons. Based on experience, the volume of leachate produced will decrease over the
postclosure period. Assuming the maximum leachate generated during the first year of post -closure is
4,655,325 gallons, the quantity generated decreases by 50% by year five (2,327,662 gallons), and
leachate generation is negligible by the end of the post -closure period (year 20); the average annual
volume of leachate produced during post -closure is 1,745,747 gallons.
Landfill gas condensate and liquid from the gas extraction wells is also managed by the leachate
collection system and hauled off -site for treatment at a WWTF. The quantity of condensate managed
during post -closure for the purposes of deriving treatment costs was estimated at 4% of the leachate
produced. The average annual condensate production is calculated as 69,830 gallons. Therefore, the
average generation of leachate and condensate will be approximately 1,815,577 gallons/year (1,745,747
gallons leachate + 69,830 gallons condensate).
Leachate may be recirculated back into the waste to maximize landfill gas production during landfill
operation, however, for purposes of financial assurance cost estimation, it is assumed that leachate is
discharged directly to Elk River WWTF for treatment.
It should be noted that the Landfill continually reviews their options with regard to leachate management,
both on- and off -site, and will continue to do so into the post -closure period.
3.7 Gas Monitoring
During post -closure, landfill gas monitoring will be performed at minimum on a quarterly basis. Monitoring
of certain aspects of the gas system will likely be conducted more frequently in accordance with other
permits and regulations (i.e. air permit). A portable methane gas meter will be used to measure the gas
concentrations at designated monitoring points. A portable meter will also be used for conducting surface
scans. The in -place meters measuring flow and other parameters at the flares and gas plant will also
likely continue to be used into the post -closure period.
At the perimeter gas probes, the detection of methane above 25 percent of the LEL at any of the
monitoring points will trigger an investigation as to the cause, and likely result in an adjustment of flow
rate in the landfill gas wells associated with the area in question.
MProject Number: 227705133 3.3
3.8 Reporting
A report describing the inspection, conditions observed, corrective actions, maintenance activities and
monitoring activities and results is prepared and transmitted to the MPCA annually on or before March 1.
The corporate contact for the facility during the post -closure period will be:
Elk River Landfill
District Manager
22460 Hwy 169 NW
Elk River, MN 55330
Phone: (763) 441-2464
3.9 Ultimate Land Use
Waste Management will control uses of the site so there will not be disturbance to the final cap system,
liner, leachate collection system, landfill gas management system, or monitoring system unless approval
is obtained from the MPCA. If the property is sold, the deed will thoroughly document any required
restrictions.
If an alternative end use is planned, the proposal will be brought to the City, County and MPCA for
approval.
3.10 Amendment Of Post -Closure Plan
A modified Post -Closure Plan will be prepared and submitted to the MPCA for approval within 60 days of
any change or event that affects the Post -Closure Plan. This applies to, but is not limited to, any change
in the monitoring system or procedures. The Post -Closure Plan will be amended whenever the permit is
renewed.
3.11 Post -Closure Care Cost Estimate
Table 3 provides a summary of annual post -closure care costs. The long-term care cost projection for 20
years, based on the annual post -closure costs, will be used for financial assurance calculations.
BProject Number: 227705133 3.4
4 Contingency Action Plan
4.1 General
This section presents the Contingency Action Plan for the Landfill, prepared in accordance with Part
7035.2615 of the MPCA Solid Waste Rules. In addition to routine landfill contingency responses for the
MSW and C&D disposal areas, this Plan also includes responses to events that may occur due to
leachate recirculation.
The purpose of this plan is to:
• Identify occurrences at the facility such as natural disasters, vandalism, accidents or failure of
constructed design features that could lead to release of solid waste or leachate and endanger
human health and the environment.
• Establish the sequence and timing of response actions that would minimize hazards to human
health and the environment.
• Identify equipment needed to remediate each occurrence.
• Identify any possible prior arrangements to be made with contractors in order to assure timely
and effective response action.
• Estimate the costs associated with these response actions.
Section 4.2 identifies potential occurrences, or contingencies, for this facility which may need corrective
action. Section 4.3 describes contingent corrective action procedures, including the sequence and
timetable, to be followed in case any of the events identified in Section 4.2 take place. Section 4.4
presents action levels for groundwater, surface water and air quality, whichever are included in the
monitoring program. Section 4.5 discusses equipment availability. Section 4.6 presents estimated costs
for the identified contingency actions. Section 4.7 discusses the need for amendment of this Contingency
Action Plan.
A copy of this plan will be kept at the Landfill office at all times for reference by on -site and operations
personnel as well as regulatory inspection personnel.
Each contingency set forth in this plan has a number of possible solutions and no contingency plan can
directly address circumstances encountered. Therefore, the MPCA will be promptly notified of major
incidents and regular discussions will be held on proposed actions and response status.
4.2 Contingencies That May Need Corrective Action
Certain events that may occur at the Landfill could endanger human health or the environment. These
events could be the result of natural disasters, accidents, vandalism or failure of constructed design
features.
Each of the tables listed in the following sections lists contingencies which may be triggered by events,
inspections or monitoring, respectively; the possible result, effect, or cause of the contingency; and
actions to be taken to evaluate and respond to the contingency.
BProject Number: 227705133 4.1
4.2.1 EVENT -TRIGGERED CONTINGENCIES
Table 4A lists potential event -triggered contingencies. Event -triggered contingencies may include severe
rainfall, leachate spill, grass fire, or other sudden, unanticipated events.
4.2.2 INSPECTION -TRIGGERED CONTINGENCIES
Table 4B lists potential inspection -triggered contingencies. Inspection -triggered contingencies may
include signs of distress in the landfill cover (such as stressed vegetation), cover erosion, leachate head
buildup on the liner beneath the waste, surface drainage problems and other findings associated with
routine wear and aging of the facility and noticed during routine inspections.
4.2.3 MONITORING -TRIGGERED CONTINGENCIES
Table 4C lists potential monitoring -triggered contingencies. Monitoring -triggered contingencies may
include contamination of groundwater or surface water beyond action levels, leachate detected in the
leak detection systems, detection of methane at gas monitoring points, and other findings discovered as
a result of routine facility monitoring.
4.3 Corrective Actions
4.3.1 EMERGENCY ACTIONS
Many of the event -triggered contingencies such as natural disasters, vandalism, fire, embankment failure
or leachate spill may require an emergency response. Such responses typically need to be implemented
immediately and may involve equipment and personnel beyond those routinely involved with facility
operation. These additional resources could include city fire and police departments and additional
contractor equipment and personnel. Table 4A summarizes, and the following paragraphs describe, the
general emergency actions which may be necessary in response to each identified event -triggered
contingency.
4.3.1.1 General
In the event of emergencies at the site during operations or post -closure, Waste Management personnel
must be contacted. The following is the key contact at Waste Management for site operation and design:
Elk River Landfill
District Manager
22460 Hwy 169 NW
Elk River, MN 55330
Phone: (320) 510-5438
The District Manager will then contact the necessary safety, environmental, or management personnel
within Waste Management to assist with the necessary corrective action. The District Manager will also
be involved with the necessary notifications to regulatory personnel. The District Manager, or other
Waste
Management personnel as necessary, will contact any additional resources necessary, such as
consultants, contractors or emergency responders, to assist with the needed efforts. If necessary, the
BProject Number: 227705133 4.2
Landfill will submit a written report describing the emergency and the procedures followed to minimize
potential hazards to the MPCA (typically within two weeks of the emergency).
4.3.1.2 Severe Rainfall
As soon as weather permits, inspect the site to determine any damage to the vegetation, berms, cap,
surface water controls, and monitoring systems. If damage is noticed, take measures to correct the
damage. For instance, place temporary erosion controls, such as soil fill, erosion control blanket or
mulch, to minimize further erosion. Place sand bags or riprap to stabilize facility features. Place
sandbags and temporary piping to make runoff controls temporarily functional. Remove any excess
sediment from runoff controls and outlets.
4.3.1.3 Flood
The Landfill is not within the floodplain; thus flooding of the facility is improbable.
4.3.1.4 Leachate Spill
Immediately retrieve any free liquid by pumping it into holding tanks, tank trucks or steel drums, and
apply absorbent materials to absorb un-pumpable liquid. If the spill is greater than 5 gallons, immediately
contact the State Duty Officer at (651) 296-8100. In such case, emergency actions will be implemented
immediately.
4.3.1.5 Grass Fire
Attempt to extinguish fire using water, fire extinguisher or soil. Contact the Elk River Fire Department for
assistance if necessary. Clear all access roads of equipment to facilitate emergency vehicle access.
If a fire affecting the site goes unreported during post -closure, the leachate tanker truck operator will
notice any related damage during his site visits. He will move to address these issues immediately by
notifying responsible Waste Management personnel of the damage.
4.3.1.6 Vandalism
For acts of vandalism that create hazards to human health and the environment, appropriate temporary
repairs should be performed as soon as possible to make the damaged system temporarily functional.
If a vandalism affecting the site goes unreported during post -closure, the leachate tanker truck operator
will notice any related damage during his site visits. He will move to address these issues immediately by
notifying responsible Waste Management personnel of the damage.
4.3.2 FOLLOW-UP TO EMERGENCY ACTIONS
As soon as possible following the occurrence and emergency response to an event requiring emergency
actions, a detailed inspection of the affected areas will be performed. The site operation team will
conduct the inspection. The purpose of the inspection will be to assess the degree and extent of
damage, if any, to the final cover, surface water controls, landfill gas management system, leachate
BProject Number: 227705133 4.3
collection system, monitoring systems, access roads, fencing, etc. The extent of any damage will be
described in detailed inspection notes and photographed.
Following the inspection, a brief report will be prepared by the operator's technical staff describing the
emergency and effects of damage, if any, on the intended purposes of the engineering features of the
facility. The report will also identify repair procedures that will restore the features to their intended
function. The inspection report and proposed repair schedule will be submitted to the MPCA on a
schedule agreed to by all parties.
4.3.3 EVENTS NOT REQUIRING EMERGENCY ACTION
Inspection -triggered and monitoring -triggered contingencies such as small cracks in embankments or the
cover, a gradual embankment or cover movement trend, cover settlement, leachate seeps, minor
erosion, leachate head buildup, detects in leachate leak detection devices, surface drainage problems
and water quality violations generally will not require an emergency response. These contingencies,
however, may require interim response actions, continued or enhanced monitoring, assessment of the
extent of the problem, and/or evaluation of the design prior to implementation of repairs or remedial
actions. Action for inspection- and monitoring -triggered contingencies is summarized in Tables 4B and
4C, respectively.
4.3.3.1 Water Quality
The following discussion describes the general procedures to follow for actions related to water quality
problems. The procedure is divided into two steps. The first is verification of the problem. The second is
the response to employ if the first step is indicative of a problem. Each problem has a number of possible
solutions and no contingency plan of action can directly address all circumstances encountered.
Therefore, this plan is conceptual and flexible, to be used as a preliminary guide by all those associated
with the project. The initial steps identified here will help define the plan of action to be followed for
specific contingency occurrences.
• If a water quality action level defined by the current permitting document is exceeded, notify the
MPCA in writing.
• Check all sampling, sample handling and analytical procedures to verify that proper techniques
were used.
• Determine the potential implications of the elevated parameters, by examining background and
historical data, reviewing regional and time variations in water quality and determining if all
monitoring points are showing elevated levels or if the occurrence is localized.
• If necessary, resample to verify results.
• If similar results are found from resampling, evaluate the results for potential impact to human
health and the environment.
• Based on the significance of the results, determine if immediate action is needed or if continued
or expanded monitoring is sufficient. Expanded monitoring may include increasing the frequency
of sampling.
• Meet with the MPCA staff to determine the need to implement assessment monitoring to comply
with requirements for disposal sites.
• Determine, if possible, the source of the problem.
During the time period covering the above actions, routine water monitoring will also continue according
to the regular schedule.
MProject Number: 227705133 4.4
Once the above evaluation is complete and the conclusion is reached that a problem is occurring, the
next step is to determine the nature and extent of that problem. This may be done by continuing to
monitor the existing monitoring points or by installing additional monitoring points. The information
gathered during this period of investigation will be submitted to the MPCA in a report.
The result will then be used to complete a feasibility study that will determine the remedial action needed,
if any, to correct the problem. Examples of remedial actions which might be selected individually or in
combination are:
• Continuing the monitoring of groundwater and surface water and, if necessary, expanding the
monitoring system.
• Repairing the final cover or surface drainage features these have been identified as the cause of
the problems.
• Repairing the leachate collection system if these have been identified as the cause of the
problem.
• Installation of a groundwater extraction system and/or groundwater flow barrier.
• Installation or modification of landfill gas extraction wells.
4.4 Action Levels
Water quality intervention levels have been established for the site, and are discussed in the Annual
Reports prepared for the facility. These levels are for use in determining compliance for the facility,
based on results from the environmental monitoring system. Note that these action levels are updated by
MDH and MPCA periodically and thus may change through the operating life of the facility and the post -
closure period. These changes will be noted in the annual reports due each February 1.
In the event of action level exceedances, the MPCA will be notified by Landfill staff and a contingency
plan of action will be discussed and implemented as necessary.
4.5 Equipment Availability
The Landfill maintains several pieces of equipment at the site for operations during the active operating
period of the Landfill. On -site equipment could be utilized for emergency actions at the facility. A partial
list of available equipment (as of August 2022) is:
• One CAT D6 Dozer
• Two Kamatsu Dozers
• One Hyundai 780 Loader
• One Dresser 538 Loader
• One CAT Grader
• One CAT 740 Ejector Haul Truck
• One CAT 973 Track Loader
• One CAT Skid Loader
• Two CAT 836 Compactors
• One CAT 826 Compactor
• One CAT Excavator
• One Volvo A25G Water Truck
MProject Number: 227705133 4.5
The types and amount of equipment available following closure of the Landfill will be greatly reduced.
However, equipment is available on very short notice from a variety of local sources, including other
Waste Management facilities, local contractors, or rental facilities.
4.6 Amendment Of Contingency Plan
A modified contingency plan will be prepared and submitted to the MPCA whenever the facility permit is
amended; the design, construction, operation or maintenance of the facility change; or when a release at
or failure of the facility occurs which indicates revised procedures or costs are necessary. The Financial
Assurance plan will be revised whenever amendment of the Contingency Action Plan requires such a
change.
4.7 Estimated Costs For Contingency Actions
Cost estimates for contingency actions are summarized in Table 4D. The actions included in the
Contingency Action Plan cost estimates are considered to be occurrences above and beyond the routine
maintenance performed during site operation and post -closure care. The cost estimates include the
capital expenditure required to implement the contingency action, and where appropriate, the annual
operation and maintenance costs of the contingency action. Operating and maintenance costs for
subsequent years are included for the estimated period of operating time of the contingency action, or
through the 20-year post -closure period. Cost estimates for contingency actions will be revised as
necessary during the operating life of the facility, to account for inflation and other needed changes, such
as those which would be addressed in an amended plan.
BProject Number: 227705133 4.6
Closure, Post -Closure, Contingency Action Plan and Financial Assurance Plan
5 Financial Assurance
5 Financial Assurance
Financial assurance for site closure, post -closure maintenance and monitoring and contingency action is
provided by establishment of a Financial Guarantee Bond (Bond) in accordance with Part 7035.2735.
The financial assurance cost estimate as calculated is $12,680,501.54, as detailed in Table 5. The
Landfill currently has a Bond on file with the MPCA and it is adjusted annually based on the required
review of the financial assurance for the annual report submittal. Upon approval of the revised cost
estimates included in this report, the Landfill will revise the value of their Bond. The Bond value will also
be revised with subsequent annual report submittals accordingly.
In addition to the financial assurance established with the MPCA, the Landfill also has established
financial assurance with both the City of Elk River ($300,000) and Sherburne County ($300,000). The
financial assurance mechanism currently implemented with both the City and County is also held in the
form of Bonds.
MProject Number: 227705133 5.1
Closure, Post -Closure, Contingency Action Plan and Financial Assurance Plan
TABLES
MSW Southern Development Area Design Volumes
Closure Cost Estimate
3 Post -Closure Cost Estimate
4A Event -Triggered Contingencies
4B Inspection -Triggered Contingencies
4C Monitoring -Triggered Contingencies
4D Contingency Action Cost Estimate
5 Post -Closure Cost Calculation
MProject Number: 227705133
Airspace
(CY)(3)
Final
Cover Area
(acres)(4)
Final Cover
& Buffer
Soils (CY)
12" Base
Drainage
Layer (CY)
24" Base
Clay
Liner (CY)
HDPE Liner
Quantity
(SF)
Operational
Volume
(CY)(5)
Intermediate
Cover Soils
(CY)
Airspace
Waste Only
(CY)
Site Life
(years)(')
Open
Date
Close
Date
1,573,697
16.4
66,308
8,398
18,715
252,648
1,507,389
188,424
1,318,965
3.0
2023
2028
1,573,697
16.4
66,308
8,398
18,715
252,648
1,507,389
188,424
1,318,965
3.0
2028
over
sr soils.
Ards per year
Table 2
Closure
Cost Estimate
Elk River Landfill
- Entire
Facility
Unit
Unit
Price
Quantity
Cost
LS
$25,000
1
$25,000
Mobilization
Cover System
LLDPE Liner
SF
$0.34
3,136,320
$1,066,349
Geocomposite
SF
$0.55
3,136,320
$1,724,976
Cover soils
CY
$3.25
174,240
$566,280
Topsoil
CY
$11.00
58,080
$638,880
Seed & Mulch
Acre
$700
72
$50,400
Buffer Soils
CY
$4.00
58,080
$232,320
Drainage Control Features
MSW Erosion Control
SF
$0.11
679,536
$74,749
Demo Erosion Control
SF
$0.11
365,904
$40,249
CPEP drain pipe (4-inch)
LF
$4.00
12,040
$48,160
CPEP drain pipe (18 and 24-inch)
LF
$25.00
1,000
$25,000
CPEP drain pipe (36-inch)
LF
$30.00
2000
$60,000
Sedimentation ponds
LS
$200,000.00
1
$200,000
LFG System
Mobilizations
LS
$25,000
1
$25,000
MSW Active System
Condensate piping
LF
$5.00
1,625
$8,125
Subheader piping
LF
$32.00
3,000
$96,000
Header piping
LF
$87.00
950
$82,650
Condensate sump
Each
$16,500
4
$66,000
Wellheads
Each
$600
65
$39,000
Gas Wells
VF
$92.00
5,550
$510,600
Demo Passive System
Piping
LF
$18.30
250
$4,575
Vents
Each
$224.00
3
$672
Trenching
LF
$42.75
250
$10,688
Granular Backfill
CY
$5.70
100
$570
SUBTOTAL (CONSTRUCTION)
$5,596,243
Engineering (@10% of construction)
LS
$5,596,243
0.1
$559,624
2022 Costs
TOTAL
$6,155,900
U:\227705133\technical\CPCCAP\Elk River 2021 cost tables.final.xlsx Closure -facility
Table 3
Post -Closure Costs
Elk River Landfill - Entire Facility
Unit
Cost
Unit
Price
Quantity
Cost
Totals
Facility Inspection Costs
$6,050
Landfill Supervisor
hour
$50
100
$5,000
Technician
hour
$35
30
$1,050
Routine Maintenance
$49,060
Mowing
acre
$150
141.4
$21,210
Fertilizing
acre
$150
10
$1,500
Cover Revegetation
acre
$1,500
3
$4,500
Security and Building Repair
LS
$3,000
1
$3,000
Surface Water Management and Maintenance
LS
$6,000
1
$6,000
Access Road Maintenance
LS
$1,200
1
$1,200
Rodent Control
hour
$25
16
$400
Erosion Repair
acre
$7,500
1.5
$11,250
Leachate System Management
$33,500
Collection System Cleaning (1x/year)
LF
$0.50
10,000
$5,000
Leachate Management (direct discharge to City)
gallon
$0.013
1,900,000
$24,700
Leachate Monitoring
Monthly Sample Collection
sample
$75
12
$900
Monthly Analysis
sample
$50
12
$600
Quarterly Sample Collection
sample
$75
4
$300
Quarterly Analysis
sample
$500
4
$2,000
$30,100
Landfill Gas Management
MSW Active System
Blower Replacements
LS
$2,200
1
$2,200
Flare and Generator Maintenance
LS
$2,000
1
$2,000
System Operation and Inspection
LS
$7,500
1
$7,500
Collection System Replacement (1 well/5 years)
LS
$12,000
0.2
$2,400
Gas Management System
LS
$9,000
1
$9,000
Demo Passive System
System Maintenance & Inspection
LS
$2,000
1
$2,000
Reporting
LS
$5,000
1
$5,000
Monitoring
Water Sample Collection
Monitoring Well Sample
11 Residential wells sampled 1x/year
4 Residential wells samples 1x/ 3 years
Lysimeter Monitoring
Lab Analysis
Quarterly Analysis (spring)
Quarterly Analysis (summer)
Quarterly Analysis (fall)
Residential Well Analysis
Lysimeter Samples
System Maintenance
Monitoring Well Replacement (5 wells/10 years)
Gas Monitoring (3x/year)
Reporting
Administrative and Reporting Services
2022 Costs
$38,643
sample
$120
98
$11,760
sample
$120
11
$1,320
sample
$120
1.333
$160
LS
$800
2
$1,600
sample
$100
29
$2,900
sample
$140
43
$6,020
sample
$100
26
$2,600
sample
$100
12.333
$1,233
sample
$75
4
$300
hour
$50
10
$500
well
$4,000
0.5
$2,000
LS
$2,250
1
$2,250
LS
$6,000
1
$6,000
LS
$8,000
1
$8,000
TOTAL
$165,400
U:\227705133\technical\CPCCAP\Elk River 2021 cost tables.final.xlsx Post -Closure -facility
TABLE
Event -Triggered
Contingency
1. Severe Rainfall
2. Leachate or Fuel
Spill
4A
Event -Triggered Contingencies
Elk River Landfill
Result
Threatened Embankment
Stability
Actin
Report; immediately assess
damage visually; within ten
working days place sand
bags, soil fill or riprap to
temporarily stabilize
embankment; check for
cracking and differential
movement; evaluate
condition and design and
prepare permanent repair
procedures report;
implement
recommendations.
Erosion Report; within fourteen
working days place
temporary erosion controls,
such as hay bales, erosion
control mats, silt fences, or
mulch; assess damage;
make permanent repairs.
Damaged Surface Water
Control
Damaged Vegetation
Report; within fourteen
working days place
sandbags, soil fill, and/or
temporary piping to make
surface water controls
temporarily functional;
remove sediments from
outlets; evaluate and make
permanent repairs.
Report; assess damage; if
necessary, within fourteen
working days place
temporary erosion controls;
evaluate cause; re -vegetate
Surface Water or Report; immediately contain
Groundwater Contamination and collect retrievable
leachate and absorb
remaining leachate; monitor;
evaluate impact; determine
and implement appropriate
follow-up actions.
Soil Contamination Report; within fourteen
working days collect
saturated soil for disposal in
lined cell; collect soil
samples below excavation;
evaluate impact; determine
and implement appropriate
follow-up actions.
3. Grass Fire Damaged Vegetation Report; immediately place
soil over fire or use water to
extinguish fire; contact City
of Elk River Fire Department
if necessary to extinguish
fire; clear access roads for
equipment access;
extinguish fire; place
temporary erosion controls;
revegetate.
4. Subsurface Fire Waste Burning Reduce extraction rate from
gas wells. Saturate surface
with water to suffocate fire.
5. Explosion Report; contact Elk River
Fire Department; if
Event -Triggered Result Action
Contingency necessary to extinguish
fire, evaluate damage,
determine and implement
appropriate follow-up
action.
6. Unacceptable Aesthetic Degradation This would most likely be
Odors Developed identified by reports
generated from WMI staff,
regulators, or neighbors. If
such a report occurs, ERL
will notify the MPCA and
take appropriate actions
7. Vandalism Damage to Facility Features Report; within fourteen
working days assess
impact; based on impact
repair damage; assess site
security.
TABLE
4B
Inspection -Triggered Contingencies
Elk River Landfill
Inspection -Triggered Contingency Result Action
1. Leachate Head Buildup Increased GroundwaterExtract and dispose or treat leachate;
Contamination Potential monitor; evaluate cause of leachate head
buildup; if necessary, increase leachate
hauling frequency.
2. Erosion or Degradation of Cap
Increased Leachate
Report; immediately assess damage; within
Generation, Potential
fourteen working days place temporary
Surface Water
erosion controls; evaluate cause and
Contamination
design; make permanent repairs.
3. Clogged Surface Water Controls
Erosion
Report; within fourteen working days place
temporary erosion controls; remove cause
of clogs; assess damage; repair erosion;
evaluate design and make any needed
changes; clean pipes, ditches, and
sedimentation ponds, as needed.
4. Leachate Detected in Leachate
Increased GroundwaterReport; within seven working days extract
Sump Leak Detection System
Contamination Potential
and dispose or treat leachate; monitor;
evaluate quantity and rate of leakage;
evaluate potential impacts on groundwater;
if necessary, evaluate cause and determine
potential remedial actions; implement
remedial action.
5. Gas System Failure
Increased Gas Migration
Report; immediately isolate affected system
Potential
components and continue operation of
unaffected portions of the gas system (if
possible); evaluate cause and design; make
permanent repairs
6. Leachate Seeps
Damaged Vegetation
Report; assess damage and evaluate
cause; make permanent repairs and
revegetate
Surface Water or
Report; immediately contain and collect
Groundwater
retrievable leachate and absorb remaining
Contamination
leachate; monitor; evaluate impact;
determine and implement appropriate
follow-up actions
Soil Contamination
Report; within fourteen working days collect
saturated soil for disposal in lined cell;
collect soil samples below excavation;
evaluate impact; determine and implement
7. Leachate Collection System Failure
Increased Groundwater
Contamination Potential
appropriate follow-up actions. Report; immediately assess damage;
evaluate cause and design; make
permanent repairs.
8. Leak in Leachate Tank or Increase Groundwater Report; immediately assess damage;
Transmission Pipe Contamination Potential evaluate cause and design; make
permanent repairs.
TABLE
4C
Monitoring -Triggered Contingencies
Elk River Landfill
Monitoring -Triggered Contingency Result
1. Exceedance of Groundwater Groundwater
Standard Contamination
Action
Report; continue monitoring; within
fourteen working days evaluate impact;
complete feasibility study and
determine remedial action; implement
remedial action.
2. Exceedance of Surface Water Surface Water Report; continue monitoring; within Standard
(in Sedimentation Contamination fourteen working days evaluate impact;
Basins) complete feasibility study and
determine remedial action; implement
remedial action.
3. Exceedance of Allowable Levels Unacceptable Monitor; report, evaluate cause of for
Leachate Discharge to Impact at MCES exceedance; design permanent Treatment
Plant. Treatment Plant pretreatment actions or choose
alternative disposal method, choose
alterative and write repot; implement
recommendations.
4. Leachate Detected in Leachate Increased Report; within seven working days Leak
Detection System Groundwater extract and dispose or treat leachate;
Contamination monitor; evaluate quantity and rate of
Potential leakage; evaluate potential impact on
groundwater; if necessary, evaluate cause and
determine potential remedial actions; implement
remedial action.
5. Detection of Methane Potential Explosive If exceedance is near an closed
Concentrations Above Conditions structure, evacuate and ventilate
Acceptable Limits at Gas structure, investigate whether methane
Monitoring Points. is entering structure, propose repose to
protect structure if needed; report;
adjust flow rate at applicable extraction
wells; continue monitoring.
6. Monitored Natural Attenuation Insufficient If the corrective actions are not judged
(MNA) is Not Shown to be Corrective Action to be protective as part of the initial
Protective as Part of the Initial MNA assessment (in accordance with
MNA Assessment MPCA-approved Groundwater
Corrective Action Work Plan, Barr,
March 2021), ERL will provide a
schedule and details for designing and
implementing a groundwater extraction
and treatment system.
Table 4D
Contingency Action Cost Estimate
Elk River Landfill
:hate Spill Cleanup (1,000 gallons, 100 cy soil)
iquid Recovery
isposal
ontaminated Soil Excavation
lean Soil Fill
lobilization
are Erosion/Embankment Repair (1 acre)
over Fill
evegetation
lean Surface Water Controls
leanup
w Cover Damage Repair (1 acre)
;s Fire and Revegetation
ire Fighting
evegetation
surface Fire/Explosion
ire Fighting
ework Cap (2 acres)
:hate Collection System Repair
roblem Assessment and Engineering
igh Pressure Flushing of Collection Pipes
eplace Collapsed Pipe
xcavate and Replace Waste
eplacement of 25 pumps
damage is deep, install final cover
indwater Extraction and Treatment
lobilization
ite Preparation
Unit
Unit Price Quantity Cost
hour
$250
6
$1,500
gal
$0.013
1000
$13
CY
$8.00
100
$800
CY
$4.00
100
$400
LS
$2,500
1
$2,500
CY
$6.50
16133
$104,865
acre
$800
5
$4,000
LF
$0.50
2000
$1,000
LS
$10,000
1
$10,000
acre
$77,000
1
hour
$500
8
$4,000
acre
$800
2
$1,600
day
$5,000
15
$75,000
acre
$77,000
2
$154,000
LS
$5,000
1
$5,000
LS
$10,000
1
$10,000
LF
$18.00
200
$3,600
CY
$10.00
9000
$90,000
each
$1,500
25
$37,500
acre
$77,000
5
$385,000
LS
$72,540
1
$72,540
LS
$10,000
1
$10,000
Cost
Totals
$5,2'
$119,91
$77,01
$5,6'
$229,01
$531,11
$1,447,41
xtraction Well Installation - Mud Rotary Methods
each
$26,067
3
$78,200
iezometer Installation - Sonic Methods
each
$15,000
3
$45,000
rench Excavation and Backfill
LF
$20
1000
$20,000
tility Bedding Soil
LF
$2.00
1000
$2,000
DPE Forcemain - 2" Dia. SDR11 (Well lines)
LF
$3.50
1000
$3,500
irectional Drilling 4" Dia. Line 8' Deep
LF
$10.00
7700
$77,000
DPE Forcemain - 4" Dia. SDR11 (pipe around LF to east infilt. basin)
LF
$6.00
7700
$46,200
ressure Testing and Quality Control
LS
$20,000
1
$20,000
Jell Power and Conduit
LF
$11.00
1000
$11,000
orcemain Sheet Insulation
LF
$12.50
1000
$12,500
✓ater Treatment Structure
LS
$58,000
1
$58,000
✓ater Treatment Units
LS
$140,000
1
$140,000
✓ater Treatment Plumbing
LS
$20,000
1
$20,000
qualization Tank, Controls, and Transfer Pumps
LS
$47,000
1
$47,000
xtraction Well Controls, Well Pumps, and Instrumenation
LS
$100,000
1
$100,000
apid Infiltration Basin
LS
$15,000
1
$15,000
tartup/Commissioning
LS
$20,000
1
$20,000
onstruction Contingency
25%
$797,940
0.25
$199,485
ischarge Permitting
LS
$20,000
1
$20,000
lodel Application
LS
$20,000
1
$20,000
reatment Pilot Test
LS
$100,000
1
$100,000
esign Investigation
LS
$50,000
1
$50,000
ngineering and Construction Administration
26%
$997,425
0.26
$260,000
TOTAL $2,415,21
2021 Expected Value (assumed @ 60%) $1,449,1;
J:\227705133\technical\CPCCAP\Elk River 2021 cost tables.2022rev.xlsx Contingency Actior
Table 5
Post -Closure Cost Calculations
Elk River Landfill
miMINNESOTA POLLUTION
CONTROL AGENCY Payment rate estimate table
520 Lafayette Road North Solid Waste Permit Program
St. Paul, MN 55155-4194 Doc Type: Permitting Annual Report w-sw7-26 (Revised 10127121)
Submit
Elk River Landfill with
74
Annual
Report
Facility name
SW#
2021 approved closure cost estimate
2021 approved annual postclosure care cost estimate
2021 approved contingency action cost estimate Account
balance on December 31, 2021
Value of guarantee on December 31, 2021
(Letter of Credit or
Surety Bond) 84
Operating life in months (maximum 120)
Projected costs over post -closure care period
2022 Annual postclosure care cost estimate
Inflation factor = 4.026% Discount
rate = 0.25%
6,155, 900.00
165,400.00
1,095,240.00
NA
$ 11,460,785.00
$ 172,059.00
Year Inflated annual Inflated and discounted cost annual cost
2022
$172,059
$172,059
2023
$178,986
$178,540
2024
$186,192
$185,265
2025
$193,688
$192,243
2026
$201,486
$199,484
2027
$209,598
$206,997
2028
$218,036
$214,794
2029
$226,814
$222,885
2030
$235,946
$231,280
2031
$245,445
$239,991
2032
$255,327
$249,031
2033
$265,606
$258,410
2034
$276,300
$268,144
2035
$287,423
$278,244
2036
$298,995
$288,724
2037
$311,033
$299,599
2038
$323,555
$310,884
2039
$336,581
$322,593
2040
$350,132
$334,744
2041
$364,228
$347,352
Totals $5,137,431
(Current value - not discounted)
Basis for this years payments
2022 Closure cost estimate
2022 Postclosure care cost estimate
2022 Contingency action cost estimate
Total
* Present value is only for Trust Funds and
$5,001,261
(Current value - discounted)
Current value
Present value*
$6,403,736.53
$6,292,783.45
$5,137,430.64
$5,001,260.84
$1,139,334.36
n/a
$12,680,501.54
$12,433,378.65
Account balance on December 31, 2020 NA
Value of guarantee on December 31, 2020
$11,460, 785.00
Operating life in months (never greater than 120 months) _
84
Your monthly payment if not discounting = #VALUE!
Your monthly payment if discounted = #VALUE!
Dedicated Trust Fut
https://www.pca.state.mn.us • 651-296-6300 • 800-657-3864
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