DSHW-2024-007958

DSHW-2024-007958 195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144880 • Salt Lake City, UT 84114-4880
Telephone [phone] • Fax [phone] • T.D.D. 711
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF WASTE MANAGEMENT
AND RADIATION CONTROL

Douglas J. Hansen
Director

October 22, 2024

Tim Loveday, Solid Waste Superintendent
Summit County Public Works
P.O. Box 128
Coalville, UT 84017

RE: Permit Approval for the Three Mile Canyon Landfill, Summit County
SW205

Dear Mr. Loveday:

Enclosed is the approved renewed permit to operate Three Mile Canyon Landfill (Landfill). A 45-day public
comment period for the permit draft began on July 5, 2024, and ended on August 19, 2024; no comments
were received.

Please note that periodic inspections of the Landfill may be conducted by representatives of the Division of
Waste Management and Radiation Control or the Summit County Health Department.

If you have any questions, please call Matt Sullivan at 385-454-8012.

Sincerely,

Douglas J. Hansen, Director
Division of Waste Management and Radiation Control

DJH/MS/wa

Enclosures: Three Mile Canyon Landfill Permit (DSHW-2024-002424)
Attachment 1 – Plan of Operation (DSHW-2024-002426)
Attachment 2 – Final Cover & Designs (DSHW-2024-002428)
Attachment 3 – Post-Closure Care Plan (DSHW-2024-002430)
Statement of Basis for the Three Mile Canyon Landfill Permit (DSHW-2024-008465)

c: Phil Bondurant, Health Director, Summit County Health Department
Nathan Brooks, Environmental Health Director, Summit County Health Department

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DIVISION OF WASTE MANAGEMENT
AND RADIATION CONTROL
SOLID WASTE LANDFILL PERMIT
Three Mile Canyon Landfill

Pursuant to Utah Solid and Hazardous Waste Act, Title 19, Chapter 6, Part 1 (the Act) of the
Utah Code and the Utah Solid Waste Permitting and Management Rules, Utah Administrative
Code R315-301 et seq. (the Rules) adopted thereunder, this Permit is issued to:

Summit County
as owner and operator

to own, construct, and operate the Three Mile Canyon Landfill, a Class I landfill, located in
Summit County, Utah as shown in the Permit Renewal Application that was determined
complete on December 22, 2022 (DSHW-2022-026892).

The Permittee is subject to the requirements of the Rules and the requirements set forth herein.

All references to the Rules are to regulations that are in effect on the date that this Permit
becomes effective.

This Permit shall become effective October 22, 2024.
Closure Cost Revision Date: October 22, 2029.
This Permit shall expire at midnight October 21, 2034.
Signed this 22nd day of October, 2024.

Douglas J. Hansen, Director
Division of Waste Management and Radiation Control

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FACILITY OWNER/OPERATOR INFORMATION

LANDFILL NAME:

Three Mile Canyon Landfill
OWNER NAME:

Summit County
OWNER ADDRESS:

1775 South Hoytsville Road, Coalville, Utah 84107
OWNER PHONE NO.:

[phone]
OPERATOR NAME: Same as above

OPERATOR ADDRESS:

Same as above

OPERATOR PHONE NO.:

Same as above

TYPE OF PERMIT:

Class I Landfill

FACILITY LOCATION Four miles south of Wanship on State Route 32, turn
right on Three Mile Canyon Road; stay right one-half
mile to landfill entrance. Township 1 South, Range 5
East, Section 5, SLMB; Summit County, Latitude 40º
45' 28", Longitude 111º 24' 00"

PERMIT NUMBER:

9508R3

PERMIT HISTORY This facility became operational accepting solid waste
in 1986. It received its first permit approximately in
August 1998. This is the third renewal of the permit.
This renewal permit is effective on the date shown on
the signature page.

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RECITALS

A. The term “Permit” as used in this document is defined in Utah Admin. Code R315-301-
2(55). “Director” as used throughout this Permit refers to the Director of the Division of
Waste Management and Radiation Control (the Division).

A Permit renewal application was received on November 8, 2022 (DSHW-2022-026312).
Revised appendices were received on August 13, 2023, by email, and revised parts of the
permit application text were provided by email on February 24, 2024 (DSHW-2024-008064).
On February 29, 2024, the revised pages replaced certain pages from the original document,
so that DSHW-2022-026312 contains all updates. On September 11, 2023, the Division
received a “Cultural Resource Inventory for Summit County Public Works Department’s
Threemile [sic] Class I Landfill Expansion Summit County, Utah (T1S, R5E, Section 5)”
(DSHW-2023-209048). On December 1, 2023, the State Historic Preservation Office
concurred with the cultural resource inventory (DSHW-2023-212504).

B. This Permit consists of the signature page, Facility Owner/Operator Information section,
General Permit Conditions, Specific Permit Conditions, and all attachments to this Permit.

C. The facility as described in this Permit is a Class I landfill with its original unlined disposal
cell and additional approved disposal cells (Cell 1 through Cell 5) are and will be lined
following industry standards, a scale house, maintenance building, leachate pond, and yard
waste and recyclable materials areas.

GENERAL PERMIT CONDITIONS

1. INCORPORATION OF RECITALS
The aforementioned recitals are expressly incorporated into and made a part of this Permit.

2. CONTENTS OF PERMIT APPLICATION
All contents, materials, and statements submitted as the Permit Application, provided that
they meet the requirements of the Rules, shall become a part of this Permit under Utah
Admin. Code R315-310-2(6). The Director does not endorse, adopt, or incorporate into this
Permit contents, materials, or statements in the Permit Application that do not meet the
requirements of the Rules.

3. INCORPORATION OF ATTACHMENTS
Attachments to this Permit are incorporated by reference into and made part of this Permit, as
are documents incorporated by reference into the attachments. All representations made in
the attachments of this Permit are enforceable under Utah Admin. Code R315-301-5(2).

4. CONTROLLING TERMS
Where differences in wording exist between this Permit and the attachments of this Permit,
the wording of this Permit supersedes that of the attachments.

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5. COMPLIANCE NO DEFENSE
Compliance with this Permit does not constitute a defense to actions brought under any other
local, state, or federal laws. This Permit does not exempt the Permittee from obtaining any
other local, state, or federal permits or approvals required for the facility’s operation.

6. EFFECT OF PERMIT
The issuance of this Permit does not convey any property rights, in either real or personal
property, or any exclusive privileges. Nor does this Permit authorize any injury to private
property or any invasion of personal rights, nor any infringement of federal, state, or local
laws or regulations, including zoning ordinances.

7. SEVERABILITY
The provisions of this Permit are severable. If any provision of this Permit is held invalid for
any reason, the remaining provisions shall remain in full force and effect. If the application
of any provision of this Permit to any circumstance is held invalid, its application to other
circumstances shall not be affected.

By this Permit, the Permittee is subject to the following conditions.

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PERMIT REQUIREMENTS
I. GENERAL COMPLIANCE RESPONSIBILITIES
I.A. General Operation
I.A.1. The Permittee shall operate the landfill in accordance with all applicable requirements
of the Rules for a Class I landfill, that are in effect as of the date of this Permit unless
otherwise noted in this Permit. Any permit noncompliance or noncompliance with
any applicable portions of the Act and applicable portions of the Rules constitutes a
violation of this Permit or applicable statute or rule and is grounds for appropriate
enforcement action, permit revocation, modification, termination, or denial of a
permit renewal application.
I.B. Acceptable Waste
I.B.1. This Permit is for the disposal of non-hazardous solid waste that may include:
I.B.1.a Municipal solid waste as defined by Utah Admin. Code R315-301-2(47);
I.B.1.b Commercial solid waste as defined by Utah Admin. Code R315-302-2(14);
I.B.1.c Industrial solid waste as defined by Utah Admin. Code R315-302-2(35);
I.B.1.d Construction/demolition solid waste as defined by Utah Admin. Code R315-301-
2(17);
I.B.1.e Special waste as allowed by Utah Admin. Code R315-315 and authorized in section
III.I of this Permit and limited by this section;
I.B.1.f Hazardous waste generated by a very small quantity generator as specified in Utah
Admin. Code R315-262-14; and
I.B.1.g PCBs as specified by Utah Admin. Code R315-315-7(2).
I.C. Prohibited Waste
I.C.1. Any prohibited waste received and accepted for treatment, storage, or disposal at the
facility shall constitute a violation of this Permit, of the Act and the Rules.
I.C.2. Prohibited waste may include, but is not limited to:
I.C.2.a Hazardous waste as defined by Utah Admin. Code R315-261-3 except as allowed in
I.B.1.f (Acceptable Waste) of this Permit;
I.C.2.b Containers larger than household size (five gallons) holding any liquid;
non-containerized material containing free liquids; or any waste containing free
liquids in containers larger than five gallons;
I.C.2.c PCBs as defined by Utah Admin. Code R315-301-2(53), except as allowed in Section
I.B (Acceptable Waste) of this Permit; and

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I.C.2.d Regulated asbestos as specified in Utah Admin. Code R315-315-2.
I.D. Inspections and Inspection Access
I.D.1. The Permittee shall allow the Director or an authorized representative, or
representatives from the Summit County Health Department, with or without prior
notice, to enter at reasonable times to:
I.D.1.a Inspect the landfill or other premises, practices, or operations regulated or required
under the terms and conditions of this Permit or the Rules;
I.D.1.b Have access to and make copies of any records required to be kept under the terms
and conditions of this Permit or the Rules;
I.D.1.c Inspect any loads of waste, treatment facilities or processes, pollution management
facilities or processes, or control facilities or processes required under this Permit or
regulated under the Rules; and
I.D.1.d Create a record of any inspection by photographic, video, electronic, or any other
reasonable means.
I.E. Noncompliance
I.E.1. If monitoring, inspection, or testing indicates that any condition of this Permit or any
applicable Rules may be or is being violated, the Permittee shall promptly make
corrections to the operation or other activities to bring the facility into compliance
with the Rules or the conditions of this Permit. Corrective actions may include, but
are not limited to, eliminating the activity causing the noncompliance or violation,
containment of any waste or contamination using barriers or access restrictions,
placing of warning signs, or temporarily or permanently closing areas of the facility.
I.E.2. If the Permittee discovers noncompliance with any condition of this Permit or
violation of an applicable rule, the Permittee shall:
I.E.2.a Document the noncompliance or violation in the daily operating record, on the day
the event occurred or the day it was discovered;
I.E.2.b Notify the Director by telephone within 24 hours or the next business day following
documentation of the event; and
I.E.2.c Give written notice of the noncompliance or violation and measures taken to protect
human health and the environment within seven days after Director notification.
I.E.3. Within 30 days after the documentation of the event, the Permittee shall submit to the
Director a written report describing the nature and extent of the noncompliance or
violation and the remedial measures taken or to be taken to protect human health and
the environment and to eliminate the noncompliance or violation. Upon receipt and
review of the assessment report, the Director may order the Permittee to perform
appropriate remedial measures, such as development of a site remediation plan for
approval by the Director.

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I.E.4. In an enforcement action, the Permittee may not claim as a defense that it would have
been necessary to halt or reduce the permitted activity in order to maintain
compliance with the Rules and this Permit.
I.F. Revocation
I.F.1. This Permit is subject to revocation if the Permittee fails to comply with any
condition of this Permit. The Director will notify the Permittee in writing prior to any
proposed revocation action and such action shall be subject to all applicable hearing
procedures established under Utah Admin. Code R305-7 and the Utah Administrative
Procedures Act.
II. DESIGN AND CONSTRUCTION
II.A. Design and Construction
II.A.1. The Permittee shall construct any landfill cell, sub-cell, run-on diversion system,
run-off containment system, waste treatment facility, leachate handling system, or
final cover in accordance with the equivalent design submitted as part of the Permit
Application and in accordance with the Rules.
II.A.2. Prior to construction of any engineered structure or feature, excluding buildings, and
including but not limited to any landfill cell, sub-cell, landfill liner, monitoring
system, control or collection system, waste treatment unit, or final cover, the
Permittee shall:
II.A.2.a Submit construction design drawings, signed by a professional engineer with a
current registration in Utah, and a Construction Quality Control and Construction
Quality Assurance (CQC/CQA) Plans to the Director for approval; and
II.A.2.b Incorporate approved design drawings and CQA/CQC Plans into this Permit
according to the permit modification process specified in Utah Admin. Code
R315-311-2.
II.A.3. The Permittee/s shall construct any engineered structure or feature described in
condition II.A.2 of this Permit in accordance with the design drawings and
CQC/CQA Plans approved by the Director.
II.A.4. A qualified party, independent of the owner and the construction contractor shall
perform the quality assurance function for components and other testing as required
by the approved CQC/CQA Plans. The quality assurance and other testing results
shall be submitted as part of the as-built drawings to the Director after construction is
complete.
II.A.5. If groundwater is encountered during excavation of the landfill, the Permittee shall
notify the Director immediately, implement a contingency plan, and develop and
submit an alternative construction design for approval.
II.A.6. No later than 90 days after construction, the Permittees shall:

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II.A.6.a Notify the Director of completion of construction of any engineered structure or
feature described in condition II.A.2 of this Permit; and
II.A.6.b Submit construction documents, including as-built drawings and CQC/CQA records
for each construction event, stamped and approved by a professional engineer
registered in the State of Utah, to the Director for review.
II.A.7. No waste shall be accepted into an engineered structure or feature until the Director
has reviewed the as-built documents and CQC/CQA records and has provided
approval for acceptance of waste.
II.B. Run-On Control
II.B.1. The Permittee shall maintain run-on and run-off control systems as specified in Utah
Admin. Code R315-303-3(1)(c) and R315-303-3(1)(d).
II.B.1.a Run-on control systems shall prevent run-on from entering the active area of the
facility; and run-off control systems shall contain, and collect and treat, if necessary,
run-off from the active area of the facility.
II.C. Equivalent Design
The Permittee proposed a landfill liner design that uses a geosynthetic clay liner in
place of the clay component of the liner required by Utah Admin. Code R315-303-
3(3)(a)(ii). The proposed liner is approved.
III. LANDFILL OPERATION
III.A. Operations Plan
III.A.1. At all times, the Permittee shall keep the Operations Plan, in Attachment 1 of this
Permit, on site at the landfill. The Permittee shall operate the landfill in accordance
with the operations plan. If necessary, the Permittee may modify the Operations Plan
following the procedures of Utah Admin. Code R315-311-2(1) upon approval from
the Director. The Permittee shall note any modification to the Operations Plan in the
daily operating record.
III.B. Security
III.B.1. The Permittee shall operate the Landfill so that unauthorized entry to the facility is
restricted. The Permittee shall:
III.B.2. Lock all facility gates and other access routes during the time the landfill is closed.
III.B.3. Have at least two people employed by the Permittee at the landfill during the time
that the landfill is open.
III.B.4. Construct all fencing and any other access controls as shown in the Permit
Application to prevent access by the public and large animals.

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III.C. Training
III.C.1. The Permittee shall provide training for on-site personnel in landfill operation,
including but not limited to waste load inspection, hazardous waste identification,
personal safety and protection, and relevant documentation and notification
requirements.
III.D. Burning of Waste
III.D.1. Except as provided in this paragraph, intentional burning of solid waste is prohibited
and is a violation of Utah Admin. Code R315-303-4(2)(b). The Permittee is allowed
to burn material by complying with the requirements of Utah Admin. Code R307-
202-7. The Permittee shall perform such burning in a segregated area within the
landfill site. The Permittee’s non-compliance with Utah Admin. Code R307-202-7,
as determined by the Director of the Division of Waste Management and Radiation
Control, also constitutes non-compliance with this Permit.
III.D.2. The Permittee shall take reasonable steps to prevent the ignition of accidental fires,
maintain adequate fire protection to control any fires that may occur at the facility,
and extinguish all accidental fires that ignite despite these steps as soon as reasonably
possible.
III.E. Daily Cover
III.E.1. The Permittee shall completely cover the solid waste received at the landfill at the end
of each working day with a minimum of six inches of earthen material. At the end of
each day of operation, the Permittee shall properly grade the surface of the daily
cover and shall record and certify in the daily operating record the amount of cover
the Permittee has on the waste.
III.E.2. The Permittee may use an alternative daily cover material when the material and the
application of the alternative daily cover meets the requirements of Utah Admin.
Code R315-303-4(4)(b) through R315-303-4(4)(e).
III.E.2.a Woodchips are approved as an alternative daily cover material for this facility in
accordance with Utah Admin. Code R315-303-4(4)(e).
III.E.2.b The Permittee shall apply standard daily cover (min. six inches of soil) at least once
per week.
III.E.2.c The Permittee shall apply standard daily cover any time the daily cover will be
exposed for greater than 24 hours.
III.E.2.d The Permittee shall apply standard daily cover when weather conditions (e.g., wind,
rain, etc.) prevent proper use of alternate daily cover.
III.E.2.e The Permittee shall record alternative daily cover use dates in the facility daily
operating log.

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III.E.2.f The Director may rescind or amend the alternative daily cover approval if the
requirements to prevent blowing debris, to minimize access to the waste by vectors,
to minimize the threat of fires at the open face, to minimize odors, or to shed
precipitation are not met, or if necessary to prevent nuisance conditions or adverse
impacts to human health or the environment.
III.F. Ground Water Monitoring
III.F.1. The Permittee shall monitor the groundwater underlying the landfill in accordance
with the Groundwater Monitoring Plan and the Groundwater Monitoring Quality
Assurance/Quality Control Plan contained in the Permit Application. If necessary,
the Permittee may modify the Groundwater Monitoring Plan and the Groundwater
Monitoring Quality Assurance/Quality Control Plan, provided that the modification
meets all of the requirements of the Rules and is approved by the Director as a minor
modification under Utah Admin. Code R315-311-2(1)(a). The Permittee shall note in
the daily operating record any modification to the Ground Water Monitoring Plan and
the Groundwater Monitoring Quality Assurance/Quality Control Plan. A plan change
that the Director finds to be less protective of human health or the environment than
the approved plan is a major modification and is subject to the requirements of Utah
Admin. Code R315-311.
III.G. Gas Monitoring
III.G.1. The Permittee shall monitor explosive gases at the landfill in accordance with the Gas
Monitoring Plan contained in the Permit Application and shall otherwise meet the
requirements of Utah Admin. Code R315-303-3(5). If necessary, the Permittee may
modify the Gas Monitoring Plan, provided that the modification meets all of the
requirements of the Rules and is approved by the Director as a minor modification
under Utah Admin. Code R315-311-2(1). The Permittee shall note any modification
to the Gas Monitoring Plan in the daily operating record.
III.G.2. If the concentrations of explosive gases at any of the facility structures, or at the
property boundary, or beyond the property boundary ever exceed the standards set in
Utah Admin. Code R315-303-2(2)(a), the Permittee shall:
III.G.2.a Immediately take all necessary steps to ensure protection of human health and notify
the Director;
III.G.2.b Within seven days of detection, place in the daily operating record the explosive gas
levels detected and a description of the immediate steps taken to protect human
health;
III.G.2.c Submit a remediation plan that meets the requirements of Utah Admin. Code
R315-303-3(5)(b) to, and receive approval from, the Director; and
III.G.2.d Upon approval from the Director, implement the approved remediation plan.

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III.H. Waste Inspections
III.H.1. The Permittee shall visually inspect incoming waste loads to verify that no wastes
other than those allowed by this permit are disposed in the landfill. The Permittee
shall conduct a complete waste inspection at a minimum frequency of 1 % of
incoming loads, but no less than one complete inspection per day. The Permittee
shall select the loads to be inspected on a random basis.
III.H.2. The Permittee shall inspect all loads suspected or known to have one or more
containers capable of holding more than five gallons of liquid to ensure that each
container is empty.
III.H.3. The Permittee shall inspect all loads that the Permittee suspects may contain a waste
not allowed for disposal at the landfill.
III.H.4. The Permittee shall conduct complete random inspections as follows:
III.H.4.a The Permittee shall conduct random waste inspections at the working face or an area
designated by the Permittee.
III.H.4.b The Permittee shall direct loads subjected to complete inspection be unloaded at the
designated area;
III.H.4.c The Permittee shall use equipment or hand tools to spread loads for inspection;
III.H.4.d Personnel trained in hazardous waste recognition and recognition of other
unacceptable waste shall conduct a visual inspection of the waste; and
III.H.4.e Personnel conducting the inspection shall record the results of the inspection on a
waste inspection form found in Attachment 1. The Permittee shall place the form in
the daily operating record at the end of the operating day.
III.H.4.f The Permittee or the waste transporter shall properly dispose of any waste found that
is not acceptable at the facility at an approved disposal site for the waste type and
handle the waste according to the rules covering the waste type.
III.I. Disposal of Special Wastes
III.I.1. If a load of incinerator ash is accepted for disposal, the Permittee shall transport it to
the place of disposal in such a manner as to prevent leakage or the release of fugitive
dust. The Permittee shall completely cover the ash with a minimum of six inches of
material, or the Permittee shall use other methods or material, if necessary, to control
fugitive dust. The Permittee may use ash for daily cover when its use does not create
a human health or environmental hazard.
III.I.2. The Permittee may dispose of animal carcasses in the landfill working face and shall
cover them with other solid waste or earth by the end of the operating day in which
the carcasses are received. Alternatively, the Permittee may dispose of animal
carcasses in a special trench or pit prepared for the acceptance of dead animals. If a
special trench is used, the Permittee shall cover animals placed in the trench with six
inches of earth by the end of each operating day.

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III.J. Self-Inspections
III.J.1. The Permittee shall inspect the facility to prevent malfunctions and deterioration,
operator errors, and discharges that may cause or lead to the release of wastes or
contaminated materials to the environment or create a threat to human health or the
environment. The Permittee shall complete these general inspections no less than
quarterly and shall cover the following areas: waste placement, cover; cell liner;
leachate systems; fences and access controls; roads; run-on/run-off controls; ground
water monitoring wells; intermediate cover; litter controls; and records. The
Permittee shall place a record of the inspections in the daily operating record on the
day of the inspection. The Permittee shall correct the problems identified in the
inspections in a timely manner and document the corrective actions in the daily
operating record.
III.K. Recordkeeping
III.K.1. The Permittee shall maintain and keep on file at the scale house a daily operating
record and other general records of landfill operation as required by Utah Admin.
Code R315-302-2(3). The landfill operator, or other designated personnel, shall date
and sign the daily operating record at the end of each operating day. Each record kept
by the Permittee shall contain the signature of the appropriate operator or personnel
and the date signed. The Daily operating record shall consist of the following two
types of documents:
III.K.1.a Records related to the daily landfill operation or periodic events, including:
III.K.1.a.(i) The number of loads of waste and the weights, or estimates of weights or
volumes, of waste received each day of operation and recorded at the end of each
operating day;
III.K.1.a.(ii) Major deviations from the approved Plan of Operations, recorded at the end of the
operating day the deviation occurred;
III.K.1.a.(iii) Results of monitoring required by this Permit, recorded in the daily operating
record on the day of the event or the day the information is received; and
III.K.1.a.(iv) Records of all inspections conducted by the Permittee, results of the inspections,
and, if necessary, corrective actions taken, recorded in the record on the day of the
event.
III.K.1.b Records of a general nature, including:
III.K.1.b.(i) A copy of this Permit, including the Permit Application;
III.K.1.b.(ii) Results of inspections conducted by representatives of the Director, and of
representatives of the Summit County Health Department, when forwarded to the
Permittee;
III.K.1.b.(iii) Closure and post-closure care plans; and

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III.K.1.b.(iv) Records of employee training.
III.L. Reporting
III.L.1. The Permittee shall prepare and submit to the Director an Annual Report as required
by Utah Admin. Code R315-302-2(4), using the Division of Waste Management and
Radiation Control’s Community Portal.
III.M. Roads
III.M.1. The Permittee shall improve and maintain all access roads within the landfill
boundary that are used for transporting waste to the landfill for disposal shall be
improved and maintained as necessary to assure safe and reliable all-weather access
to the disposal area.
III.N. Litter Control
III.N.1. The Permittee shall minimize litter resulting from operations of the landfill. In
addition to the litter control plans found in Section 3 of the Permit Application, the
Permittee shall implement the following procedures when high wind conditions are
present:
III.N.1.a Reduce the size of the tipping face;
III.N.1.b Reduce the number of vehicles allowed to discharge at the tipping face at one time;
III.N.1.c Orient vehicles to reduce wind effects on unloading and waste compaction;
III.N.1.d Reconfigure tipping face to reduce wind effect;
III.N.1.e Use portable and permanent wind fencing as needed; and
III.N.1.f Should high winds present a situation that windblown litter cannot be controlled, the
Permittee shall cease operations of the landfill until the winds diminish.
IV. CLOSURE REQUIREMENTS
IV.A. Closure
IV.A.1. No more than 120 days prior to the projected final receipt of waste, the Permittee
shall submit to the Director, for review, a Quality Control and Quality Assurance Plan
for construction of the final landfill cover, and approval of the plan shall be received
from the Director prior to construction of any part of the final cover at the landfill.
IV.A.2. The Permittee shall notify the Director of the projected final receipt of waste in
accordance with Utah Admin. Code R315-302-3(4) and begin closure activities in
accordance with an approved Closure Plan within 30 days of final receipt of waste.
IV.A.3. The Permittee shall install final cover for the landfill as shown in Attachment 2. The
final cover shall meet, at a minimum, the standard design for closure as specified in
Utah Admin. Code R315-303-3(4) plus sufficient cover soil or equivalent material to

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protect the low permeability layer from the effects of frost, desiccation, and root
penetration.
IV.A.4. A qualified person not affiliated with the Permittee or the construction contractor
shall perform permeability testing on the final cover.
IV.A.5. Upon completion of closure activities, the Permittee shall submit to the Director, for
approval, all documents demonstrating closure activities, and a certification from a
professional engineer registered in the state of Utah, that the landfill has been closed
in accordance with an approved Closure Plan, and approved Construction Quality
Control and Construction Quality Assurance Plan.
IV.B. Title Recording
IV.B.1. The Permittee shall meet the requirements of Utah Admin. Code R315-302-2(6) by
recording a notice with the Summit County Recorder as part of the record of title that
the property has been used as a landfill. The notice shall include waste disposal
locations and types of waste disposed. The Permittee shall provide the Director the
notice as recorded.
IV.C. Post-Closure Care
IV.C.1. Upon approval from the Director that the treatment facility has been closed in
accordance with an approved Closure Plan, the Permittee shall apply for a
post-closure care permit in accordance with Utah Admin. Code R315-310-10.
IV.C.2. The Permittee shall perform post-closure care at the closed landfill in accordance with
the Post-Closure Care Plan contained in Attachment 3 until a Post-Closure Care
Permit is issued by the Director. Post-closure care shall continue until all waste
disposal sites at the landfill have stabilized and the finding of Utah Admin. Code
R315-302-3(7)(c) is made.
IV.D. Financial Assurance
IV.D.1. The Permittee shall keep in effect and active the currently approved financial
assurance mechanism or another approved mechanism that meets the requirements of
Utah Admin. Code R315-309 and is approved by the Director to cover the costs of
closure and post-closure care at the landfill. The Permittee shall adequately fund and
maintain the financial assurance mechanisms to provide for the cost of closure at any
stage or phase or anytime during the life of the landfill or the permit life, whichever is
shorter.
IV.E. Financial Assurance Annual Update
IV.E.1. The Permittee shall submit an annual revision of closure and post-closure costs for
inflation and financial assurance funding as required by Utah Admin. Code
R315-309-2(2), to the Director as part of the annual report. The Permittee shall
submit the information as required in Utah Admin. Code R315-309-8 and shall meet
the qualifications for the Local Government Financial Test each year.

Page 15 of 16

IV.F. Closure Cost and Post-Closure Cost Revision
IV.F.1. The Permittee shall submit a complete revision of the closure and post-closure cost
estimates by the Closure Cost Revision Date listed on the signature page of this
Permit and any time the facility is expanded, any time a new cell is constructed, or
any time a cell is expanded.
V. ADMINISTRATIVE REQUIREMENTS
V.A. Permit Modification
V.A.1. Modifications to this Permit may be made by the Permittee or by the Director in
accordance with the procedures specified in Utah Admin. Code R315-311-2. The
Permittee may initiate a modification by submitting a written request to the Director.
The Director may initiate a modification by giving written notice to the Permittee.
V.B. Permit Transfer
V.B.1. This Permit may be transferred to a new permittee or new permittees by complying
with the permit transfer provisions specified in Utah Admin. Code R315-310-11.
V.C. Expansion
V.C.1. This Permit is for a Class I landfill. The permitted landfill shall operate according to
the design and Operation Plan described and explained in this Permit. Any expansion
of the current footprint designated in the description contained in the Permit
Application, but within the property boundaries designated in the Permit Application,
shall require submittal of plans and specifications to the Director. The plans and
specifications shall be approved by the Director prior to construction.
V.C.2. Any expansion of the landfill facility beyond the property boundaries designated in
the description contained in the Permit Application shall require submittal of a new
permit application in accordance with the requirements of Utah Admin. Code
R315-310.
V.C.3. Any addition to the acceptable wastes described in Section I.B shall require submittal
of all necessary information to the Director and the approval of the Director.
Acceptance for PCB bulk product waste under Utah Admin. Code R315-315-7(3)(b)
can only be done after submittal of the required information to the Director and
modification of Section I.C of this Permit.
V.D. Expiration
V.D.1. If the Permittee desires to continue operating this landfill after the expiration date of
this Permit, the Permittee shall submit an application for permit renewal at least six
months prior to the expiration date, as shown on the signature (cover) page of this
Permit. If the Permittee timely submits a permit renewal application and the permit
renewal is not complete by the expiration date, this Permit shall continue in force
until renewal is completed or denied.

Page 16 of 16

VI. ATTACHMENTS
Attachment 1 – Plan of Operation
Attachment 2 – Final Cover & Designs
Attachment 3 – Post-Closure Care Plan

Attachment 1

Plan of Operation
Part II – Three Mile Landfill Permit Application 18 November 2022
Since the application of select waste over the protective layer of soil on the side slopes
will take place incrementally as the level of MSW within the cell raises, specific
measures will be followed to minimize the potential of liner damage. The following
procedure will be followed to ensure protection of the liner over the side slopes:
 All Spotters and Equipment Operators involved with the placement of select
MSW will have annual training delineating the screening and placement of the
select MSW. The annual training documentation will identify the person receiving
the training, date of training, and the name of the person providing the training.
All training documents will be included in the operation record.
 General MSW will be placed in the new lined cells only after the placement of the
protective soil has been completed. As the waste is placed, landfill Equipment
Operators will spread the select MSW in a layer of approximately 1’-2’ thick. The
Equipment Operator will perform the initial screening of the MSW as he/she
spreads the MSW into the 1’-2’ thick layer.
 A dedicated Spotter will perform the second screening of the MSW for objects
capable of causing damage to the liner by penetrating the protective soil layer. All
materials with the potential of damaging the liner through the two (2) foot thick
soil layer will be removed from the MSW.
 Once the MSW has been screened by the Spotter and deemed adequate for use as
the select MSW layer, the Landfill Superintendent will be notified.
 The Equipment Operator will screen the MSW another time as he/she places the
select MSW layer over the two (2) foot thick protective soil layer.
The Superintendent will periodically observe the placement of the select MSW layer on
the side slopes as a final screening of the select MSW.
3.2.2.2 Development of Cell 2
Construction
Cell 2 will be constructed on 2024/2025 and begin accepting waste in 2025. Soil
generated from the Cell 2 excavation will be used to construct site access roads and for
daily landfill operational cover. Any excess soil will be stockpiled for use as daily,
intermediate, or final landfill cover construction in the Phase A Closure area.

Attachment 2

Final Cover & Designs
Part II – Three Mile Landfill Permit Application 44 November 2022
SECTION 4 - CLOSURE PLAN
This section describes the final cover construction, site capacity, schedule of closure
implementation, estimated costs for closure, and final inspection procedures for the
existing unlined landfill and the proposed lined Landfill.
4.1 CLOSURE STRATEGY
As shown in the permit Drawings Drawing 6 (Appendix A), the final cover grading plan
for the TMCL is to close the existing and lined landfill areas in six Phases. When the
unlined portion of the landfill reaches capacity, the County will develop a plan to close
the unlined portion of the landfill, and the phased closure of the unlined area of the
landfill will be initiated. A construction design package including plans, specifications
and QA/QC plan will be prepared and submitted to the State DWMRC for review and
approval. The first area to be closed will be the area of the TMCL designated as Closure
Phase A as shown on Drawing 6 (Appendix A).
The remaining areas of the landfill will be closed as each area is filled to the final
elevation. Once Phase A is closed, drawing 6 (Appendix A) illustrates the planned
closure sequence of the landfill moving in a clockwise manner from Phase A to Phase F
near the existing landfill entrance. The projected date of final closure of the entire
landfill, based on current waste streams and existing waste projection is approximately
2054.
The Director of the Division of Waste Management and Radiation Control will be
notified in writing at least 60 days prior to the anticipated last receipt of waste in
accordance with R315-302. Implementation of the closure plan will begin within 30 days
after last receipt of waste. Closure will be completed within 180 days of implementation
of closure activities, unless an extension has been granted by the Director of the Division
of Waste Management and Radiation Control.

Part II – Three Mile Landfill Permit Application 45 November 2022
4.2 FINAL COVER DESIGN AND INSTALLATION
A design package consisting of construction drawings, specifications, and QA/QC plan
for each of the closure Phases will be prepared and submitted to the State of Utah
DWMRC for review and approval prior to construction. A final documentation package
will be prepared once the last area of the landfill is closed to ensure compliance with
federal and state regulations effective at the time of closure. The conceptual final cover
design described herein is in accordance with current State of Utah regulations and
RCRA Subtitle D criteria. The final cover system is designed to control the emission of
landfill gas, promote the establishment of vegetative cover, minimize infiltration and
percolation of water into the waste, and prevent erosion of the waste throughout the post-
closure care period and beyond.
4.2.1Cover System Components
In Appendix A the planned sequencing of the final cover phases of the landfill are as
shown on drawing 6 Appendix A. Three Mile Landfill lined area final cover components
will consist of the follow components beginning from bottom to top:
 A minimum of 12 inches of intermediate native soil cover
 A reinforced GCL
 A 60-mil textured HDPE membrane
 A geocomposite drainage layer (geonet sandwiched between two geotextile
fabrics)
 An 18-inch soil protective cover layer, the lower 12-inches will consist of select
site soils (to protect the geosynthetics) and the upper 6 inches will consist of
native soils suitable for plant growth.
The soil cover layers will consist of native soil materials placed and compacted to
minimize maintenance efforts. The top 18 inches of soil protective cover and in particular
the upper 6 inches will be a vegetative cap capable of supporting vegetation.
The final cover areas of the TMCL that are over the unlined landfill (Closure Phases A
and B) may be closed with a different final cover profile due to the lack of a landfill liner.
Part II – Three Mile Landfill Permit Application 46 November 2022
Summit County personnel will discuss the closure methodology of the unlined landfill
with DWMRC prior to the development of construction documents. One potential
alternative, which incorporates 30-in (minimum) of soil cover, is shown on Drawing 7.
4.2.2 Seed, Fertilizer and Mulch
The 6-inch vegetative layer of the cover will be used in all closure phases, seeded with a
mixture of grasses suitable for fast growth in the region then fertilized and mulched. A
local, experienced agronomist will be retained to develop an appropriate seed mixture for
the seeding of the final cover for the landfill.
4.2.3 Landscaping
The landfill facility, including all surrounding grounds, will be maintained in conjunction
with any scheduled maintenance activities (i.e., grass cutting, road improvements, etc.).
The landscape of the landfill will be designed to be both functional and aesthetically
pleasing.
4.2.4 Contouring
The landfill's final grades will be inspected and maintained in order to ensure its integrity
and conformity with the conceptual final cover contours.
Any areas where water has collected (ponded) will be regraded. Erosion damage resulting
from extremely heavy rainfall will be repaired. Landfill personnel will inspect the final
grading no less than quarterly.
4.2.5 Quality Assurance/Quality Control (QA/QC) Procedures
Prior to the actual construction activities associated with each of the closure phases of the
final landfill cover; drawings, specifications and QA/QC procedures will be developed
and submitted to the State of Utah DWMRC for review and approval. Each of the closure
construction projects will be performed in strict adherence to the construction QA/QC
Plan approved by the DWMRC.
Part II – Three Mile Landfill Permit Application 47 November 2022
4.3 CLOSURE COST ESTIMATES
Detailed cost estimates for the construction of closure phases (A through F) will be
routinely updated for use in financial assurance fund analysis. Appendix E contains the
most recent cost estimate associated with the TMCL closure operation.
4.4 CERTIFICATION OF CLOSURE AND RECORD KEEPING
A civil engineer registered in the State of Utah will design, observe, and document that
each of the landfill closure projects has been done in accordance with DWMRC
regulations. The registered engineer will be employed by the County, or will be a
County-hired contractor and will certify the landfill was closed according to the closure
plan. Any amendment or deviation to the closure plan will be approved by the Director of
the Division of Waste Management and Radiation Control and any associated permit
modifications will be made. As part of the certification process, the engineer shall also
provide closure as-built drawings to the Director of the Division of Waste Management
and Radiation Control within 90 days following completion of closure activities.

Attachment 3

Post-Closure Care Plan
Part II – Three Mile Landfill Permit Application 48 November 2022
SECTION 5 - POST-CLOSURE PLAN
Post closure activities will begin when closure for the entire landfill is approved by the
Director of the Division of Waste Management and Radiation Control. The following
presents the post-closure plan for the TMCL.
5.1 MONITORING PROGRAM
The following subsections offer a description of the monitoring program, which includes
groundwater monitoring systems and leachate and gas collection systems.
5.1.1. Groundwater Monitoring
Groundwater is currently monitored as detailed in the approved Groundwater Monitoring
Plan (Appendix C). Landfill personnel will continue to implement the groundwater
monitoring program in conformance with the requirements of Rule R315-308, Ground
Water Requirements of the State of Utah Department of Environmental Quality, Division
of Waste Management and Radiation Control, Administrative Rules throughout the Post-
Closure care period. Groundwater monitoring wells will be sampled in accordance with
the approved Groundwater Monitoring Plan.
5.1.2 Surface Water Monitoring
Although no surface water sampling activities are scheduled for the landfill, landfill
personnel will inspect the drainage system no less than quarterly. Temporary repairs to
any observed damage will be made until permanent repairs can be scheduled. Landfill
personnel or a licensed general contractor will replace drainage facilities, if necessary.
5.1.3 Leachate Collection and Treatment
5.1.3.1Unlined Landfill
A leachate collection system was neither required nor installed during construction of the
unlined landfill.

Part II – Three Mile Landfill Permit Application 49 November 2022

5.1.3.2 Lined Landfill
The last lined cell of the landfill will be constructed with a leachate sump rather than a
leachate pond. The leachate that flows into the sump will be removed and pumped to
either a leachate pond located at the landfill or taken to a POTW. Once the landfill is
closed, the level of leachate in the sump will be monitored quarterly and all leachate
removed will be taken to a POTW.
5.1.4 Landfill Gas
Although no landfill gas collection or management structures currently exist, it is likely
that they will be incorporated into future facility designs. Any landfill gas structure
installed during the life of the landfill will either be abandoned during closure activities
or will be a part of a maintenance program. If landfill gas structures are operational
during the Post-Closure period, landfill personnel will be responsible for the inspection
and maintenance of those structures. Monitoring will occur quarterly.
As outlined in R315-303, Summit County personnel will take all the necessary steps to
protect human health and will immediately notify DWMRC if explosive gas levels are
detected. Summit County personnel will implement a remediation plan for the explosive
gas releases, place a copy of the plan in the operating record, and notify UDEQ that the
plan has been implemented. The remediation plan will describe the nature and extent of
the problem and the proposed remedy.
5.2 MAINTENANCE PROGRAM
The following subsections offer a description of the maintenance of installed equipment,
including groundwater monitoring systems and leachate collection systems.
5.2.1 Monitoring Systems
5.2.1.1 Groundwater
Part II – Three Mile Landfill Permit Application 50 November 2022
All current and future groundwater monitoring wells will be inspected for signs of failure
or deterioration during each sampling event. If damage is discovered, the nature and
extent of the problem will be recorded. A decision will be made to replace or repair the
well. Possible repairs include redevelopment, chemical treatment, partial casing
replacement or repair, sealing the annulus, or pumping and testing. If a well needs to be
replaced, it will be properly abandoned.
5.2.1.2 Surface Water
Drainage control problems can result in accelerated erosion of a particular area within the
landfill. Differential settlement of drainage control structures can limit their usefulness
and may result in a failure to properly direct storm water off-site.
Implementation of a post-closure maintenance program will maintain the integrity of the
final drainage system throughout the post-closure maintenance period. The final surface
water drainage system will be evaluated and inspected, no less than quarterly, for ponded
water and blockage of and damage to drainage structures and swales. Where erosion
problems are noted or drainage control structures need repair, proper maintenance
procedures will be implemented as soon as site conditions permit so that further damage
is prevented. Damaged drainage pipes and broken ditch linings will be removed and
replaced.
TMCL personnel will inspect the drainage system no less than quarterly. Temporary
repairs will be made until permanent repairs can be scheduled. Summit County personnel
or a licensed general contractor will replace drainage facilities.
5.2.1.3 Leachate Collection and Treatment
The leachate control and recovery system must be maintained so that it operates during
the post-closure maintenance period. The system will be inspected no less than quarterly
by Summit County personnel for signs of deterioration. Summit County personnel or a
licensed contractor will make required repairs.
5.2.1.4. Landfill Gas
Part II – Three Mile Landfill Permit Application 51 November 2022
The landfill gas monitoring system (if utilized) will be regularly inspected in conjunction
with the scheduled monitoring tasks. The system will be repaired, and parts replaced as
required to maintain system capabilities. The landfill gas monitoring system will be
inspected quarterly throughout the post-closure period.
5.2.2 Cover and Run-On/Run-Off Systems
The final grades and capping system will incorporate features to manage storm water,
minimize erosion, and provide for efficient removal of storm water collected in the
drainage layer. Drawings 6 (Appendix A) show proposed final grades and illustrate the
extent of storm water collection and surface water and erosion control systems on the
surface of the final cover.
The final cover will convey collected water via earthen dikes, swales, and drainage
channels to the storm water detention basins.
Placement of all permanent drainage facilities will be completed in conjunction with the
construction of the final cover.
5.3 SCHEDULE OF POST-CLOSURE ACTIVITIES
Quarterly post-closure activities, consisting of monitoring and maintaining the final
cover, leachate collection and treatment system, gas collection and treatment system, and
permanent drainage facilities, will be implemented as areas of the landfill are filled to
final grade. Appendix D contains a quarterly inspection form which will be used to
document this activity.
5.4 CHANGES TO RECORD OF TITLE, LAND USE, AND ZONING
Summit County personnel will notify the Summit County Recorder's Office at any such
time when there is a change to the Record of Title, land use plan, or zoning restrictions.
In addition, the County will notify the Recorder at that time when the post-closure care
period has expired and when a final site use has been accepted by the State.

Statement of Basis
for the Three Mile Canyon Landfill Permit

1. INTRODUCTION

This Statement of Basis provides the rationale of the Director of the Division of Waste Management and
Radiation Control (Division) for issuing the Three Mile Canyon Landfill Permit, a Class I landfill. The
Director’s staff conducted this evaluation to ensure compliance with the applicable solid waste rules.
Matt Sullivan wrote this Statement of Basis.

2. FACILITY BACKGROUND

a. Facility Location and History

The Three Mile Canyon Landfill is four miles south of Wanship in Summit County on State Route
32, then right on Three Mile Canyon Road. It is approximately one-half mile (stay right) to the
landfill entrance. The Three Mile Canyon Landfill has served Summit County communities for
many years.

b. Regulatory History

The Three Mile Canyon Landfill became operational in approximately 1986. It received its first
permit to operate in 1998. Since then, Three Mile Canyon Landfill has received two permit renewals
to operate (and one permit modification in 2014). This is its third permit renewal.

3. EVALUATION OF THE PERMIT APPLICATION

a. The permit application (DSHW-2022-026312) was received on November 8, 2022. Summit County
received a letter dated December 22, 2022 (DSHW-2022-026892) stating that the permit application
was evaluated and complete in addressing the Solid Waste Permitting and Management Rules, and if
the Division required additional information, Summit County would be contacted.
On February 28, 2023, a request for information was sent to Summit County by the Division
(DSHW-2023-001876). Summit County responded to the request on August 13, 2023, and
February 24, 2024, and that information was updated in the permit application
(DSHW-2022-026312).

4. JUSTIFICATION FOR ISSUING THE PERMIT

a. The Director’s staff has evaluated the permit application as required by Section § 19-6-108 of the
Solid and Hazardous Waste Act and Utah Administrative Code R315-301 through R315-322. The
information provided in the application satisfies the requirements.

5. PUBLIC PARTICIPATION

a. As required by Utah Admin. Code R315-311-3, the Director provided an initial 45-day public
comment period public comment period from July 5, 2024, through August 19, 2024. No comments
were received.

6. DIRECTOR RESPONSE TO PUBLIC COMMENTS: No comments were received during the public
comment period. There were no responses from the Director.
Figure 1
Facility Location
North Bearing – top of map