DSHW-2024-006438

Attachment 3
Post-Closure Care Plan
2023 NUERA Bayview Landfill Permit Renewal Part III June 30, 2023
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SECTION 5 – POST-CLOSURE PLAN
5.1 GENERAL
Post-closure care for Cell 1 at Bayview will consist of long-term maintenance of the
closure cap and ongoing sampling of the groundwater monitoring wells and gas
monitoring stations to ensure that the landfill cell has been closed in accordance with
regulations. The post-closure care period will be 30 years unless unexpected
environmental contamination or continued subsidence occurs, or a shorter period if it
can be proven that it no longer presents a threat to human health or the environment.

The most recent analysis of annual post-closure costs is provided in Appendix C – Annual
Report.
5.2 POST-CLOSURE PLAN
The Post-Closure activities will include the following work:
5.2.1 Changes to Record of Title
A Plat Map and Statement of Fact concerning the location of the landfill shall be recorded
with the Utah County recorder not later than 60 days after certification of final closure. The
recorded document will restrict future land use.
5.2.2 Monitoring and Maintenance Plan
Semi-annual groundwater and quarterly landfill gas monitoring will occur throughout the
post-closure period. This frequency will be increased if data indicate that contamination
may have occurred. The post-closure monitoring frequency will revert to the original
schedule if the more frequent monitoring demonstrates that contamination, if present, is
not attributable to the landfill.

Collection and treatment of leachate generated in Cell 1, Cell 1.5, and all Stages of Cell 2
will be provided by the dual-lined evaporation pond constructed directly north and
upstream of the existing evaporation pond. The original evaporation pond will provide
stormwater and process water runoff containment for the adjacent biosolids compost
facility (when or if composting operations are performed). These leachate collection and
2023 NUERA Bayview Landfill Permit Renewal Part III June 30, 2023
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treatment systems will be inspected as part of the ongoing activities for other landfill cells
during the post-closure period for Cell 1, Cell 1.5, and all Stages of Cell 2. Since Bayview has
no planned surface water discharge, no surface water monitoring will be required during
the post-closure period.

The table below provides a schedule for conducting inspections and maintenance and for
recording these routine activities. Landfill personnel will be responsible for conducting the
inspections, scheduling maintenance, and recording these activities on the forms provided
in Appendix F.

Frequency of Inspection / Maintenance of Facilities During Post-Closure Care

Landfill Facility Inspection or Maintenance Frequency
Landfill Cell Closure cap integrity.
Cell perimeter fence integrity.
Quarterly
Stormwater I Leachate Pond Perimeter fence integrity.
Water depth.
Liner system integrity.
Quarterly
Other Appurtenances Entrance gate integrity.
Perimeter fence integrity.
Monitoring station integrity.
Berm integrity.
Run-on and Run-off Control
Systems.
Quarterly

The above activities will be carried out as part of the ongoing operations during the active
life of the site. They will be expanded to include the entire site at final landfill closure and
will continue throughout the post-closure monitoring period.

A written summary of the activities performed during each inspection will be maintained.
NEURA will retain the right of entry to the closed landfill, maintain all right-of-way’s, and
conduct maintenance and/or remediation activities as needed. The landfill will be
inspected on a quarterly basis for the following conditions:
2023 NUERA Bayview Landfill Permit Renewal Part III June 30, 2023
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• Integrity of the final cover (including erosion, subsidence, seeps and
settlement);
• Loss of vegetative cover or growth of undesirable plant species;
• Visible debris, litter, and waste;
• Condition of access roads, gates, and fences;
• Integrity of on-site structures;
• Integrity of groundwater monitoring system;
• Integrity of methane monitoring system;
• Integrity of drainage features;
• Integrity of the leachate collection system;

The final cover will be inspected for erosion or other maintenance problems. Any problems
detected during routine site inspections will be corrected as soon as practicable. All eroded
areas will be recovered with suitable soil to establish erosion control and infiltration layers,
as well as positive drainage to maintain the integrity of the final cover. All bare areas in
the final cover will be re-vegetated as necessary.

The need for final cover system repairs due to differential settlement or subsidence will
be determined based on an evaluation of whether the final cover in the affected area
has been impaired. Any areas where the integrity of the final cover has been
compromised will be repaired as necessary.

Eroded areas in drainage ditches will be repaired and re-graded. Sediment buildup will
be removed from areas where flow is restricted. Temporary stormwater control
structures will be constructed and maintained as needed.

The leachate collection system will be maintained and operated as needed to minimize
leachate head on the liner. NUERA may seek the approval of the DWMRC to cease
leachate extraction and treatment if it can demonstrate that leachate generation has
diminished and no longer poses a threat to human health and environment.
5.2.3 Closure and Post-Closure Contact
The Landfill Manager at Bayview will be the contact person for the Closure period of the landfill.
A caretaker position will be created and serve as the point of contact during the Post-Closure
2023 NUERA Bayview Landfill Permit Renewal Part III June 30, 2023
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care period. The Landfill Manager can be reached at [phone]. The caretaker contact
information will be provided to the DWMRC once that position has been filled.