DAQ-2024-007239

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153 North 1400 West
Logan, Utah 84321

March 21, 2024

TITLE V OPERATING PERMIT RENWAL APPLICATION
LOGAN CITY LANDFILL
P a g e | ii of ii March 21, 2024
TABLE OF CONTENTS

INTRODUCTION AND FACLITY DESCRIPTION…….………………………………………………….…1
UTAH DIVISION OF AIR QUALITY OPERATING PERMIT APPLICATION FORMS………….2

APPENDICES
A Site Plans
B Process Flow Diagram
C Process / Equipment Description
D Potential Emissions
E Insignificant Emission Units
F Air Pollution Control Equipment
G Compliance Monitoring Activities
H Applicable Requirements
I Proposed Exemptions from Requirements
J Emissions Trading
K Compliance Plan and Schedule
L Compliance Plan Certification

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TITLE V OPERATING PERMIT RENEWAL APPLICATION
PERMIT NUMBER: 500103003
CITY OF LOGAN
LOGAN CITY LANDFILL
153 NORTH 1400 WEST
LOGAN, CACHE COUNTY, UTAH

INTRODUCTION AND FACLITY DESCRIPTION

Logan City has prepared this application for the renewal of the Title V Operating Permit
concerning Logan City’s Class I Sanitary Landfill, with permit number 500103003. This
comprehensive submission incorporates the Utah Division of Air Quality (UDAQ) Operating
Permit Application, provided as Attachment 1. Additionally, supporting information and
documentation for the renewal application is organized in Appendices A through K, consistent
with the format recommended by UDAQ.
Situated at 153 North 1400 West, Logan, Cache County, Utah, the Logan Landfill is permitted as
a Class I municipal solid waste (MSW) facility. Since its establishment in 1960, the landfill has
dutifully served the community by accepting municipal and commercial waste from Cache
Valley residents and businesses. Notably, in 2017, the North Valley Landfill was opened to
supersede the Logan Landfill. At present, the Logan Landfill primarily receives construction and
demolition waste, alongside a limited amount of MSW during adverse weather conditions or
when the North Valley Landfill is inaccessible.
Since 2020, the city has been executing a phased closure plan for the landfill. The landfill has
been a Title V permit holder since 2005, and has consistently demonstrated compliance with
regulatory standards, underscored by a steadfast commitment to environmental stewardship.

P a g e | 2 of 2 March 21, 2024
UTAH DIVISION OF AIR QUALITY OPERATING PERMIT APPLICATION FORMS

OPERATING PERMIT APPLICATION FORM October 19, 2006
Utah Division of Air Quality

OPERATING PERMIT APPLICATION

APPLICATION FOR:  INITIAL
 MODIFICATION
X RENEWAL

AN APPLICATION FOR A PERMIT TO OPERATE MUST BE SUBMITTED WITHIN 12 MONTHS OF COMMENCING
OPERATION OR OCTOBER 10, 1995, WHICHEVER IS LATER; OR, FOR RENEWALS, NOT LATER THAN THE
RENEWAL DATE. This is not a stand alone document. Please refer to the Utah Administrative Code or the Permit
Application Instructions for specific details required to complete the application. Please print or type all information requested.
A completeness review will be made utilizing a Completeness Checklist. If you would like a copy of the checklist or if you
have any questions please contact the Operating Permit Section of the Division of Air Quality at [phone]. Written
inquiries may be addressed to: Division of Air Quality, Operating Permit Section, P.O. Box 144820, Salt Lake City, Utah
84114-4820.

GENERAL OWNER AND PLANT INFORMATION
1. Company name and address:
City of Logan
290 North 100 West
Logan, Utah 84321
Phone: ( 435 ) 716-9000
FAX: ( 435 ) 716-9003
2. Company contact for environmental issues:
Issa Hamud
Environmental Director

Phone: ( 435 ) 716-9752
FAX: ( 435 ) 716-9751
3. Plant name and address, and plant contact (if different
from above): Logan City Landfill
153 North 1400 West
Logan, Utah 84321

Phone: (435 ) 716-9756
FAX: (435 ) 716-9751
4. Owner's name and address (if different from #1):

Same as #1

Phone: ( )
FAX: ( )
5. Is plant permanent? X Yes  No If not, how long will equipment be at this location?
6. County plant is located in: __Cache County____ Are you within 50 miles of state border? X Yes  No
7. Directions to plant (street address and/or directions to site to include U.S. Geological Survey
map if necessary): Enter Logan City, Utah on Highway 89. Turn West on 200 North (Highway 30), proceed
approximately 1.8 miles to 1400 West. The landfill entrance is located on the South side of 200 North and
1400 West.

8. Identify any current Approval Order(s) (continue on separate sheet if necessary): Grandfathered?  Yes  No
AO#_________________Date ____/____/____ AO#_________________Date ____/____/____
AO#_________________Date ____/____/____ AO#_________________Date ____/____/____
AO#_________________Date ____/____/____ AO#_________________Date ____/____/____
9. If request for modification, previous operating permit # and date:
DAQO #___500103003_____________ DATE: __10__/__31__/_2019___
10. Type of business at this plant: ___Class I MSW Sanitary Landfill ______
11. Is your company a Small Business?
 Yes  No
12. Standard Industrial Classification (SIC) Code
(See Instructions): [ 4 ] [ 9 ] [ 5 ] [ 3 ]

OPERATING PERMIT APPLICATION FORM October 19, 2006

PROCESS INFORMATION
13. Site plan of plant drawn to scale to include location of emission units (Attach as Appendix A):
14. Flow diagram of emission unit(s) at the plant to include flow rates and other applicable information (Attach as
Appendix B):
15. Detailed process/equipment description. (Attach as Appendix C)
Description must include:
 Process/Equipment specific form(s) identified in the instructions
 Fuels and their use  Equipment used in process  Description of product(s)
 Raw materials used  Operation schedules  Description of changes to process
 Production rates (include daily/seasonal variances) (if applicable)
16. Does this application contain confidential information?  Yes  No
If yes, mark those portions claimed confidential and submit a statement in support of the claim.
17. Are you requesting that the permit include Alternative Operating Scenario(s)?  Yes  No
If yes, include the detailed information described in this application for each alternative requested.

EMISSIONS RELATED INFORMATION
18. Describe all potential emissions of air pollutants. (Attach as Appendix D).
Include the following:
 Emissions for which the source is major.
 Emissions of regulated air pollutants.
 Emissions of hazardous air pollutants.
 Description of any operational constraints or work practices imposed that limit the amount of regulated or
hazardous air pollutants.
 Emissions above described in appropriate units (lbs/hr, lbs/day, ppm, etc.) based on the underlying standard,
and in tons/year.
 All calculations, including conversion factors as appropriate, to support the emissions data above.
19. Identify on the site plan (see #13 above) all emissions points; and all relevant building dimensions, stack
parameters, etc.
20. List and describe any insignificant emission units. (Attach as Appendix E)
21. List all air pollution control equipment and include equipment specific forms identified in the instructions.
(Attach as Appendix F)

MONITORING INFORMATION
22. List and describe all compliance monitoring devices and activities. (Attach as Appendix G)
23. Cite and describe any applicable test methods used for determining compliance. (Include with Appendix G)

APPLICABLE REQUIREMENTS
24. Cite and describe all applicable requirements with regard to (but not limited to) the following (attach as
Appendix H):
 SIP  HAP  NSPS PSD  NSR  UACR  Title IV  Approval Order  Other
25. Are there any proposed exemptions from applicable requirements? (If yes, attach as Appendix I)  Yes 
No
March 21, 2024
APPENDIX A
SITE PLANS
A site location map, landfill general arrangement map, and landfill closure phase map are
included in this application as Figures A-1 through A-3 respectively.

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BIN SHED
WASH
BAY SHOP
FUTURE C & D
TRANSFER
EXISTING
SEWER LIFT
STATION
CHECKED BY:
COPYRIGHT:
DESIGNED BY:
DRAWN BY:
CAD DWG FILE:
PROJECT NO.:
REFERENCE:
PROVIDED BY CLIENT.
ARRANGEMENT
B
2702 South 1030 West, Suite 10
Salt Lake City, Utah 84119
[phone] Fax: [phone]
GENERAL
LOGAN LANDFILL CLOSURE
C
A
4312
DATE DESCRIPTIONMARK
ISSUE:
1
SHEET TITLE
4
C
32
B
A
1
Feet
0 250 500
11/8/23 DRAFT
TOPOGRAPHY: AERIAL SURVEY AND IMAGERY BY FORESIGHT (2018, 2021, 2023)
X:\PROJECTS\00386 Logan City\2023 Phase 3 Closure\Phase 3 Closure.dwg
2/28/24 PHASE 3 CLOSURE UPDT
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PHASE 1 & 2 CLOSURE AREA
30.61 ACRES (2020)
REMAINING AIRSPACE: 0 CYD
PHASE 3 CLOSURE AREA
9.0 ACRES (2023)
REMAINING AIRSPACE: 0 CYD
PHASE 4 CLOSURE AREA
16.2 ACRES (TBD)
REMAINING AIRSPACE:
~126,000 CYD (2023)
PHASE 5 CLOSURE AREA
12.3 ACRES (TBD)
REMAINING AIRSPACE:
~167,000 CYD (2023)
PHASE 6 CLOSURE AREA
24.1 ACRES (TBD)
REMAINING AIRSPACE:
~1.69 MCYD
BIN SHED
WASH
BAY SHOP
FUTURE C & D
TRANSFER
EXISTING
SEWER LIFT
STATION
CHECKED BY:
COPYRIGHT:
DESIGNED BY:
DRAWN BY:
CAD DWG FILE:
PROJECT NO.:
REFERENCE:
TOPOGRAPHY: AERIAL SURVEY AND IMAGERY BY FORESIGHT (2018, 2021, 2023)
PROVIDED BY CLIENT.
PHASING PLAN
B
2702 South 1030 West, Suite 10
Salt Lake City, Utah 84119
[phone] Fax: [phone]
CLOSURE
LOGAN LANDFILL CLOSURE
C
A
4312
DATE DESCRIPTIONMARK
ISSUE:
2
SHEET TITLE
4
C
32
B
A
1
Feet
0 250 500
11/8/23 DRAFT
COMPLETED CLOSURE
PHASE (1-3)
FUTURE CLOSURE
PHASE (4-6)
2/28/24 PHASE 3 CLOSURE UPDT
X:\PROJECTS\00386 Logan City\2023 Phase 3 Closure\Phase 3 Closure.dwg
Airspace Remaining:
1,982,000 CYD
March 21, 2024
APPENDIX B
PROCESS FLOW DIAGRAM

City of Logan
Logan Landfill

Solid
Waste
Generated
by
Community
Waste
Collection
Trucks
Scale
Waste
Collection
Trucks
Logan
Landfill
Tipping
Face
Solid
Waste
Landfilled
March 21, 2024
APPENDIX C
PROCESS/EQUIMPENT DESCRIPTION
Solid waste is collected through out Cache County, and transported to the Environmental
Campus which consists of the Logan Sanitary Landfill, Transfer Station, and Compost facility
located at 153 North 1400 West in Logan, Utah. The Transfer Station began operation in 2017,
since that time all municipal solid waste (MSW) has been processed through the transfer
station and landfilled at the North Valley Landfill near Clarkston, Utah. All construction and
demolition (C&D) waste is landfilled at the Logan Landfill. During extreme weather conditions
MSW is disposed of at the Logan Landfill.
The landfilling process is as follows; refuse is unloaded at the tipping face of the landfill and
moved into place with a track loader and compacted. C&D waste is covered with cover at a
minimum of every 30 days with soil. The cover soil consists of waste soil, asphalt, and concrete,
that has been stock piled at the landfill for use as daily cover.
The waste decomposes and emits landfill gas, primarily composed of methane and carbon
dioxide. Leachate is collected through drain pipes and directed to our leachate ponds located
west of the landfill. The Logan Landfill does accept Friable asbestos which is placed in a
separate cell that is clearly marked and monitored daily. There are three above ground storage
tanks located adjacent to the landfill. One 4,000-gallon diesel fuel tank used to fuel landfill
equipment and two used oil tanks (500-gallon and 2000-gallon). The diesel tank emits VOCs.
C.1 EMISSION UNITS
Details regarding the following emission units; MSW landfill, Fugitive Dust, and Various
Insignificant Activities; of the Logan landfill are provided in the following sections.
C.1.1 MSW LANDFILL
The Logan Landfill has been accepting waste since 1960. With the recent opening of the North
Valley Landfill the refuse disposal rate has decreased significantly. The Logan Landfill is now
used primarily as a C&D landfill, MSW is disposed of occasionally at the Logan Landfill due to
weather or mechanical issues at the North Valley Landfill. 2017 was the last year of full
operation, with the landfill receiving 84,055 tons of MSW and 36,624 tons of C&D waste.
Current landfill conditions and operation is outlined in the table below.
Logan Landfill
Hours of Operation: 8:00 AM to 5:00 PM Monday through
Saturday, Closed Sunday
Waste Accepted:
MSW (residential and commercial), special
waste in accordance with Rule R315-315, and
infectious waste in accordance with R315-
316
March 21, 2024
Current Refuse Disposal Rate: 62,200 tons of C&D per year
17,800 Tons of MSW per year
Landfill Area: 85 Acres
Heavy Equipment Used Daily in Landfill:
CAT 973 Track Loader (diesel)
CAT 962 Wheel Loader (diesel)
CAT 962 Wheel Loader (diesel)
10 Wheeled Water Truck (diesel)
Equipment Used Occasionally in Landfill:
1 Frontier Windrow Turner (diesel)
1 Bandit 4680P Grinder (diesel)
1 Doppstadt 617.2 Trommel Screen (diesel)
1 Compactor (diesel)
1 Motor Grader (diesel)

C.1.2 FUGITAVE DUST FROM HAUL ROADS
Fugitive dust emissions primarily arise from vehicles traversing unpaved roadways at the
landfill. The site encompasses 2,000 feet of unpaved road alongside 1,400 feet of paved
roadway. Notably, Roll-Off refuse collection trucks constitute the primary source of fugitive
dust emissions.
To mitigate fugitive dust, the landfill employs a range of control measures. These include the
placement of gravel on roadways, enforcement of reduced speed limits, regular road sweeping,
and watering of roads on as needed.
C.1.3 VARIOUS INSIGNIFICANT ACTIVITIES
The category of Insignificant Landfill Equipment comprises several stationary items, including a
propane-fired infrared tube heater, a 500-gallon propane above-ground storage tank (AST), two
(500-gallon and 2,000-gallon) used oil ASTs, and a 4,000-gallon diesel AST.
The propane-fired infrared tube heater serves the purpose of heating the equipment shop
within the Compost area. Fuel for this heater is stored in a 500-gallon propane AST.
Furthermore, the landfill utilizes both a 500-gallon and a 2,000-gallon used oil tank for the
storage of used motor oil, which is an essential component of the landfill’s household
hazardous waste program. It's important to note that no used motor oil is employed for
comfort heating purposes at the landfill.
Lastly, a 4,000-gallon diesel AST is utilized to store fuel for the operation of landfill equipment.

March 21, 2024
APPENDIX D
POTENTIAL EMISSIONS
Emissions from the landfill include gas, fugitive dust from haul roads, and insignificant
equipment (i.e. heater, fuel storage) emissions.
Landfill Gas
Landfill gas is emitted from the landfill because of anaerobic decomposition of waste. Per the
requirements of the Logan Landfill Title V Operating Permit #500103003, Tier 2 Non-Methane
Organic Compound (NMOC) Testing is completed every 5 years. The latest NMOC report was
completed by Kleinfelder on November 9, 2023. The full report is included. The NMOC
emission rate for 2023 was calculated to be 5.838 megagrams per year(Mg/yr), with a
maximum emission rate over the next five years to be 6.073 Mg/yr. The Kleinfelder report
contains all sampling data as well as the LandGEM results.
Fugitive Dust from Haul Roads
Fugitive dust generated by vehicles traveling on unpaved haul roads is a source of particulate
matter (PM) emissions. The PM emissions calculations were based on AP-42, Section 13.2.2.
Detailed fugitive dust emission calculations are provided in Tables D-1 through D-2.

24001723.001A/SLC23R159565 Page i of iv November 9, 2023
© 2023 Kleinfelder www.kleinfelder.com

849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336

TIER 2 LANDFILL GAS TESTING AND FIVE-YEAR
NMOC EMISSIONS REPORT
SAMPLING DATES: 9/14/23, 9/15/23, 9/22/23
LOGAN LANDFILL
153 NORTH 1400 WEST
LOGAN, UTAH 84321
KLEINFELDER PROJECT NO. 24001723.001A

NOVEMBER 9, 2023

Copyright 2023 Kleinfelder
All Rights Reserved

ONLY THE CLIENT OR ITS DESIGNATED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC PROJECT FOR WHICH THIS
REPORT WAS PREPARED.

24001723.001A/SLC23R159565 Page ii of iv November 9, 2023
© 2023 Kleinfelder www.kleinfelder.com

849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
A Report Prepared for:

Mr. Tyler Richards
City of Logan, UT
Utah Division of Air Quality
195 North 1950 West
Salt Lake City, UT 84116

TIER 2 LANDFILL GAS TESTING AND FIVE-YEAR NMOC EMISSIONS REPORT
SAMPLING DATES: 9/14/23, 9/15/23, 9/22/23
LOGAN LANDFILL
153 NORTH 1400 WEST
LOGAN, UTAH 84321

Prepared by:

Amit Nair
Principal Professional

KLEINFELDER
849 West Levoy Drive, Suite 200
Salt Lake City, UT 84123
Phone: [phone]

November 9, 2023
Kleinfelder Project No.: 24001723.001A

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© 2023 Kleinfelder www.kleinfelder.com

849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
TABLE OF CONTENTS
___________________________________________________________________________________

Section Page
1 EXECUTIVE SUMMARY ........................................................................................................... 1
2 INTRODUCTION ..................................................................................................................... 3
2.1 SOURCE DESCRIPTION ........................................................................................................ 3
2.2 TESTING OVERVIEW ............................................................................................................ 3
2.3 REGULATORY OVERVIEW .................................................................................................... 3
2.4 TEST MODIFICATIONS ......................................................................................................... 4
3 TIER 2 LANDFILL GAS TESTING ................................................................................................ 5
3.1 OVERVIEW ........................................................................................................................... 5
3.2 LANDFILL GAS SAMPLING PROCEDURES............................................................................. 5
3.3 LABORATORY ANALYTICAL PROCEDURES ........................................................................... 6
3.4 LABORATORY ANALYTICAL RESULTS ................................................................................... 7
4 QUALITY ASSURANCE/QUALITY CONTROL .............................................................................. 9
4.1 SUMMA CANISTERS ............................................................................................................ 9
4.2 METHOD 25C AND 3C ....................................................................................................... 10
5 NMOC EMISSION ESTIMATE ................................................................................................. 11
5.1 EXISTING WASTE IN PLACE ............................................................................................... 11
5.2 PROJECTED WASTE IN PLACE ............................................................................................ 13
5.3 DESCRIPTION OF LANDGEM MODEL ................................................................................ 13
5.4 NMOC EMISSION ESTIMATES ........................................................................................... 14
6 SUMMARY ........................................................................................................................... 15
7 REFERENCES ........................................................................................................................ 16

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
TABLES
1 Estimated Future NMOC Emissions ................................................................................................. 2
2 Summary of Tier 2 Testing Results ................................................................................................... 7
3 Summa Canister Leak Check Verification ........................................................................................ 9
4 Waste Acceptance Data (1960-2022) ....................................................................................... 11-12
5 Estimated Future Waste Acceptance Data .................................................................................... 13
6 Estimated Future NMOC Emissions ............................................................................................... 14

FIGURES
1 Site Map – Landfill Gas Probe Locations

APPENDICES
A Test Protocol
B Field Data Forms
C Laboratory Analytical Data
D LandGEM Model Report

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© 2023 Kleinfelder www.kleinfelder.com

849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
1 EXECUTIVE SUMMARY
___________________________________________________________________________________

The City of Logan Landfill (City) has developed this report regarding Tier 2 landfill gas testing and a
five-year estimate for non-methane organic compound (NMOC) emissions at the Logan Landfill
(Landfill), as required by Federal New Source Performance Standards (NSPS) for Municipal Solid Waste
Landfills (40 CFR Part 60, Subpart WWW, Sections §60.750 through §60.759 and equivalent 40 CFR
Part 62, Subpart OOO) and their Title V Operating Permit number 500103004. This report contains
results of the Landfill gas testing conducted in September 2023, and NMOC emissions estimates for the
five-year period beginning January 1, 2023, and ending December 31, 2027. If the estimated NMOC
emission rate is less than 34 megagrams (Mg) per year in each of the next five consecutive years, the
owner or operator of the landfill may submit an estimate of the NMOC emission rate for the next
five-year period in lieu of reporting annually.

Kleinfelder Inc. (Kleinfelder) conducted landfill gas testing at the Landfill on September 13-22, 2023.
Testing was conducted to assess the site-specific value for the concentration of non-methane organic
compounds (CNMOC) contained in the landfill gas, in accordance Condition II.B.2.a.1(c) of the Operating
Permit. Testing involved collecting landfill gas from 25 locations from below the Landfill cover using
subsurface sampling probes, which were composited into nine Summa canisters. Sample collection and
analyses conformed to the approved methods described in the Test Protocol (Kleinfelder Document
No. SLC23R156796), approved for this project by the Utah Division of Air Quality (UDAQ), dated
August 7, 2023.

United States Environmental Protection Agency (EPA) Landfill Gas Emissions Model (LandGEM)
Version 3.02 was used to estimate future NMOC emissions. The landfill gas NMOC laboratory analytical
result of 99.3 parts per million by volume (ppmv), and a conservative estimated waste acceptance
growth rate of 4 percent annually for the next five years (2023-2027), was input to the LandGEM model
and used to estimate NMOC emissions for the next five years. Projected NMOC emissions estimates
from the model run are provided in Table 1.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
Table 1: Estimated Future NMOC Emissions
Year NMOC Emissions
Projection (Mg/year)
2023 5.84
2024 5.89
2025 5.94
2026 6.01
2027 6.07

As shown in Table 1, estimated NMOC emissions are projected to be below 50 Mg/year
(Subpart WWW’s threshold) and below 34 Mg/year (Subpart OOO’s threshold) for the years 2023
through 2027. Actual waste acceptance over the next five years is not expected to exceed the
conservative annual growth rate of 4 percent, as assumed in this report. If waste acceptance rates
exceed a 4 percent annual increase for any of the next five years, the Landfill will either revise this
five-year estimate, or revert back to an annual reporting, as allowed by Condition II.B.2.a.3(a) of the
Operating Permit. Based on the results listed above in Table 1, NMOC testing will be repeated in 2028,
and another five-year estimate of NMOC emissions report will be generated in the year 2028 for the
period of 2028 through 2032.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
2 INTRODUCTION
___________________________________________________________________________________

2.1 SOURCE DESCRIPTION
The Logan Landfill is an active Class I municipal solid waste (MSW) landfill that is owned and managed by
the City of Logan. The Landfill area containing waste that has been in place for two or more years
consists of approximately 30 acres (12.1 hectares) of land in Cache Valley, Utah. For this project,
sampling will be performed across the portions of the Landfill that contain waste over two years of age,
which meets the sampling requirements of Condition II.B.2.a.1(c) of the Operating Permit.

A site map of the facility is provided as Figure 1.

2.2 TESTING OVERVIEW
Kleinfelder conducted landfill gas testing at the Landfill on September 14 through September 22, 2023.
Testing was conducted to assess the site-specific value for the CNMOC contained in the landfill gas in
accordance with federal and UDAQ rules. Site-specific CNMOC was calculated using Tier 2 testing
provisions as provided in Condition II.B.2.a.1(c) of the Operating Permit. Sampling conformed to
techniques and approved methods described in the Test Protocol approved for this project by UDAQ in
correspondence dated September 15, 2023. The text of the approved Test Protocol is provided as a
reference in Appendix A.

2.3 REGULATORY OVERVIEW
Testing was conducted to assess the site-specific value for the CNMOC contained in the landfill gas. The
CNMOC value was used to estimate annual NMOC emission rates using EPA’s LandGEM model. If the
estimated NMOC emission rate is less than 34 Mg per year in each of the next five consecutive years,
the owner or operator of the landfill may submit an estimate of the NMOC emission rate for the next
five-year period in lieu of reporting annually. This report contains NMOC emissions estimates for the
five-year period beginning January 1, 2023, and ending December 31, 2027. Historical waste in place,
along with projected waste in place for 2023 through 2027 were used to estimate projected future
NMOC emissions. A full description of NMOC emissions estimation procedures is discussed in Section 4
of this report.

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2.4 TEST MODIFICATIONS
Backup samples were collected in two canisters (LLFD-1 and LLFD-2). Landfill gas probe locations and
depths were adjusted to prevent ambient air intrusion into the samples and based on conditions
observed at the Landfill. The depth of each of the probes was located within waste that had been in
place for at least two years.

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3 TIER 2 LANDFILL GAS TESTING
___________________________________________________________________________________

3.1 OVERVIEW
Sampling and analysis were conducted in accordance with Condition II.B.2.a.1(c) of the Operating
Permit, and the approved Test Protocol. Field sampling activities were completed within three days at
the Landfill. A representative of UDAQ was not present during testing procedures.

3.2 LANDFILL GAS SAMPLING PROCEDURES
Landfill gas samples were collected by withdrawing gas from below the cover of the Landfill using
subsurface sampling probes. Sampling probes were hydraulically pushed into the solid waste using a
mobile direct push drill rig. A total of 25 probes were advanced (at least one meter below the cover
material) within the waste that was at least two years old to depths of approximately 10 to 20 feet
below the Landfill surface. Approximate probe locations are identified on the Site Map provided as
Figure 1.

Polyethylene tubing was attached to the sampling probe tip for extraction of landfill gas at each probe
location. The sample locations were screened for nitrogen, oxygen, carbon dioxide, and methane
content in landfill gas using a Landtec® GEM5000 portable gas analyzer. If screening indicated that
nitrogen and oxygen were detected at concentrations exceeding 20 percent and/or 5 percent,
respectively, the probe location was abandoned, and another location was selected nearby. This
field-screening procedure was conducted to ensure that landfill gas was comprised in the samples and
reduce potential intrusion of ambient air from the Landfill surface that could dilute the gas samples.

Prior to sample collection, each canister was given an initial vacuum check and the initial vacuum
measurements were recorded on the field data sheets in inches of mercury (Section 3.1, Table 3).
Following the successful screening of a sampling location and purging the sampling train, a three-way
valve was opened, allowing landfill gas to flow into an evacuated six-liter Summa canister attached to
the sampling train. Sampling rates were adjusted by a needle valve and monitored using a rotameter
incorporated into the sampling train. Approximately one liter each of gas volume from three separate
sample locations was composited into each canister, except for samples LLF-7 and LLF-9, that each
contained samples from two locations instead of three. Tracking time and flow rate, sample volumes
from each location were approximately equal as they were composited into the canisters. Following

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completion of the sample collection at each probe location, the sampling train was purged with helium
to avoid cross-contamination. Probe tubing was discarded after use at each probe location. Field data,
including gas screening results and Summa canister control forms, are provided in Appendix B.

Final vacuum measurements were recorded for each canister following sample collection at each
location. Canisters were not completely filled with landfill gas but were left under a slight vacuum as a
quality control mechanism to be able to assess if leakage had occurred during shipment to the analytical
laboratory. Each canister was verified as received under negative pressure by the laboratory and were
considered as valid for analysis. Canister vacuum is discussed further in Section 3 of this report.

A total of 25 samples of landfill gas were composited into nine Summa canisters. Landfill gas samples
were collected in two additional backup canisters and assigned sample IDs LLFD-1 and LLFD-2. Nitrogen
and oxygen concentrations from sample canisters LLF-7 and LLF-8 did not meet the required quality
control parameters, therefore results from backup canisters LLFD-1 and LLFD-2 were used instead of
LLFD-7 and LLFD-8.

3.3 LABORATORY ANALYTICAL PROCEDURES
11 total (9 primary and 2 backup) Summa canisters were shipped to Air Technology Laboratories under
chain-of-custody documentation. The samples were analyzed by EPA Reference Method 25C, which
specifies sample analysis through gas chromatography using a flame ionization detector (GC/FID). The
concentrations of NMOC are reported as total ppmv carbon and then divided by six to provide a
reported ppmv concentration as hexane, as specified by Condition II.B.2.a.1(c) of the Operating Permit.
These results are presented in Table 2 in Section 2.4 of this report.

Method 25C requires that samples be analyzed by EPA Reference Method 3C for calculation of nitrogen
and oxygen as a percentage of the total sample (U.S. EPA, 2017). The criteria for acceptance as specified
in Section 4.4 of Method 25C, is less than 20 percent nitrogen. The EPA has since recognized that landfill
gas may contain greater than 20 percent nitrogen if waste is in the initial stages of decomposition.
Therefore, EPA allows the measurement of oxygen content as an alternative to nitrogen, with
concentrations below 5 percent oxygen being deemed valid samples even if nitrogen exceeds 20 percent
in the same sample (U.S. EPA, 2017). Nitrogen and oxygen concentrations from canisters LLF-7 and LLF-8
were not acceptable and therefore the backup samples were used. Method 25C and 3C analytical data
are provided in Appendix C.

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3.4 LABORATORY ANALYTICAL RESULTS
The landfill gas samples were analyzed by Air Technology Laboratories in accordance with EPA
Method 25C. Sample results yielded the following average CNMOC value as carbon, reported in ppmv:

• Total sample average CNMOC as carbon = 596 ppmv.

The average CNMOC as carbon is divided by six and reported as hexane, as specified by
Condition II.B.2.a.1(c) of the Operating Permit:

• Total sample average CNMOC as hexane = 99.3 ppmv.

The site-specific CNMOC value of 99.3 ppmv will be used by the Landfill for annual calculation of NMOC
emissions from the Landfill as specified by Conditions II.B.2.a.1(a) and (c) of the Operating Permit. This
CNMOC value may be used for five years, after which another Tier 2 test must be performed in accordance
with Condition II.B.2.a.1(c)(3) of the Operating Permit. Analytical results of Tier 2 testing at the Landfill
are summarized in Table 2.

Table 2: Summary of Tier 2 Testing Results
Sample ID Boring/ Probe
Locations* Nitrogen (%) Oxygen (%) CNMOC as Carbon
(ppmv)
LLF-1 L-1, L-2, L-3 <3.4 <1.7 380
LLF-2 L-4, L-5, L-6 <3.6 <1.8 390
LLF-3 L-7, L-8, L-9 <3.2 <1.6 800
LLF-4 L-10, L-11, L-12 <3.4 <1.7 600
LLF-5 L-13, L-14, L-15 <3.6 <1.8 490
LLF-6 L-16, L-17, L-18 <3.6 <1.8 570
LLF-7** L-19, L-21 58 15 (invalid)
LLF-8** L-20, L-22, L-23 61 15 (invalid)
LLF-9 L-24, L-25 <3.5 <1.7 1,100
LLFD-1 (backup) L-1, L-6, L-13 <3.5 <1.7 420
LLFD-2 (backup) L-16, L-19, L-20 <3.6 <1.8 610
Average CNMOC as Carbon: 596
Average CNMOC as Hexane: 99.3
Notes:
< = Not detected at or above the indicated laboratory reporting level.
* = Probe locations depicted on Figure 1.
** = LLF-7 and LLF-8 results invalidated due to nitrogen and oxygen concentrations exceeding 20 percent and
5 percent, respectively; Results from backup sample LLFD-1 and LLFD-2 used in place of LLF-7
and LLF-8.

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Laboratory results from sample canisters LLF-7 and LL-8’s analysis were considered invalid due to
nitrogen and oxygen concentrations exceeding 20 percent and 5 percent, respectively. Backup sample
canisters in canister LLFD-1 was analyzed as replacement for LLF-7. Backup sample in canister LLFD-2
was analyzed as replacement for LLF-8. Laboratory analytical data are provided in Appendix C.

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4 QUALITY ASSURANCE/QUALITY CONTROL
___________________________________________________________________________________

4.1 SUMMA CANISTERS
The vacuum in the Summa canisters were recorded prior to and following sample collection at each
location, as well as upon receipt by the laboratory prior to performing sample analysis to verify integrity
of the samples. Table 3 lists initial, final, and receipt canister vacuums (in inches of mercury [Hg])
recorded by Kleinfelder and Air Technology Laboratories. A total of 11 canisters were shipped to the
laboratory under chain-of-custody documentation under vacuum, all of which were analyzed.

Table 3: Summa Canister Leak Check Verification
Sample ID Canister No Initial Pressure*
(inches Hg)
Final Pressure
(inches Hg)
Laboratory Receipt
Pressure (inches
Hg)
LLF-1 N4129 -16.0 -1.0 -6.0
LLF-2 N4792 -18.0 -3.0 -7.0
LLF-3 3744 -18.0 -3.0 -5.0
LLF-4 1428 -18.0 -3.0 -6.0
LLF-5 3555 -18.0 -3.0 -7.0
LLF-6 1286 -18.0 -3.0 -7.0
LLF-7** 1454 -18.0 -3.0 -6.0
LLF-8** 1412 -18.0 -2.0 -5.0
LLF-9 1351 -18.0 -2.0 -6.5
LLFD-1 (backup) 1427 -18.0 -3.0 -6.5
LLFD-2 (backup) 3751 -18.0 -2.0 -7.0
* = Canisters are shipped from the laboratory containing one liter of helium in order to render the return
shipment of landfill gas samples as non-hazardous. Initial pressures would normally reflect higher numbers if
helium was not used.

Vacuum data presented in Table 3 suggests no leaks occurred during shipment. Higher laboratory
receipt vacuums were reported, as compared to final pressures recorded by Kleinfelder before shipment
from the field. This is due to differences in altitude and corresponding atmospheric pressures between
the Landfill elevation (approximately 5,080 feet above sea level) and the elevation at Air Technology
Laboratories (approximately 150 feet above sea level).

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4.2 METHOD 25C AND 3C
Method 25C requires that a daily calibration of the gas chromatograph (GC) must be performed, as well
as a daily calibration blank. These procedures were completed by the laboratory. The laboratory
analytical report is provided in Appendix C.

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5 NMOC EMISSION ESTIMATE
___________________________________________________________________________________

5.1 EXISTING WASTE IN PLACE
Landfill emissions depend on site-specific variables, including the quantity of waste in place (WIP). The
Logan Landfill began accepting waste in 1960. Known waste acceptance rates for the years 1960 through
2022 are provided in Table 4.

Table 4: Waste Acceptance Data (1960-2022)
Year Acceptance Rate
(Mg/year)
1960 3,405
1961 3,471
1962 3,890
1963 4,323
1964 4,768
1965 5,226
1966 5,888
1967 5,569
1968 7,270
1969 7,990
1970 8,730
1971 9,528
1972 10,350
1973 11,197
1974 12,068
1975 27,002
1976 28,971
1977 30,992
1978 33,066
1979 35,195
1980 37,375
1981 39,814
1982 42,321
1983 44,898
1984 47,545
1985 50,262
1986 53,048

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Table 4 (cont.): Waste Acceptance Data (1960-2022)
Year Acceptance Rate
(Mg/year)
1987 55,904
1988 58,665
1989 61,727
1990 64,889
1991 68,153
1992 70,288
1993 70,750
1994 69,622
1995 77,106
1996 80,252
1997 86,175
1998 90,655
1999 85,669
2000 113,558
2001 98,780
2002 88,862
2003 99,268
2004 94,282
2005 98,062
2006 104,499
2007 96,895
2008 96,062
2009 86,327
2010 84,332
2011 93,713
2012 90,134
2013 98,223
2014 92,535
2015 108,551
2016 109,708
2017 112,765
2018 40,131
2019 67,804
2020 74,096
2021 59,934
2022 66,496

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5.2 PROJECTED WASTE IN PLACE
Future waste acceptance rates (2023 through 2027) have been estimated using a conservative annual
rate increase of 4 percent. The average annual waste acceptance rate from the most recent ten-year
period of 2011 through 2021 is 2.4 percent. Therefore, the assumed future annual growth rate of
4 percent is considered conservative. The projected waste acceptance rates for 2023 through 2027 are
included in Table 5.

Table 5: Estimated Future Waste Acceptance Data
Year
Projected Waste
Acceptance Rate
(tons/year)
2023 76,072
2024 79,115
2025 82,570
2026 85,570
2027 88,993

5.3 DESCRIPTION OF LANDGEM MODEL
The U.S. EPA’s LandGEM Version 3.03 was used to estimate NMOC emissions. LandGEM is based on a
first-order decomposition rate equation for quantifying emissions from the decomposition of landfilled
waste in MSW landfills. The LandGEM software was obtained from EPA’s website (EPA, 2020).

Variables used in the LandGEM model are as follows:

• k = methane generation rate constant, per year. The methane generation rate used for this
report was 0.02 per year, which is the Clean Air Act (CAA) Arid Area default. The Landfill is
considered an arid area landfill because it is located in a region that receives less than 25 inches
of rainfall per year, as defined in Condition II.B.2.a.1(a) of the Operating Permit.
• Lo = methane generation potential in cubic meters per megagram (m3/Mg) solid waste. The
default value of 170 m3/Mg was used for this model, as provided in Condition II.B.2.a.1(a) of the
Operating Permit.
• CNMOC = Concentration of NMOC in ppmv as hexane. The value of CNMOC reported in Section 2.4 is
99.3 ppmv as hexane.
• Methane Content value of 50 percent.

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5.4 NMOC EMISSION ESTIMATES
NMOC emissions were modeled with LandGEM as described above. NMOC emissions estimates from the
model run are shown below in Table 6.

Table 6: Estimated Future NMOC Emissions
Year NMOC Emissions Projection
(Mg/year)
2023 5.84
2024 5.89
2025 5.94
2026 6.01
2027 6.07

A report from the LandGEM Model run is provided in Appendix D.

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6 SUMMARY
___________________________________________________________________________________

Landfill gas testing from 25 sampling probe locations across the Landfill resulted in a CNMOC value of
99.3 ppmv. Testing and sample analysis was conducted in accordance with the Test Protocol, and
Condition II.B.2.a.1(c) of the Operating Permit. This site-specific value was used by the Landfill for
calculation of Landfill NMOC emissions.

NMOC emission estimates, based upon a conservative annual waste acceptance growth rate of
4 percent for the period from 2023 through 2027, do not exceed 34 Mg/year for any of the five years. In
accordance with Condition II.B.2.a.3(a) of the Operating Permit, if the actual waste acceptance rate
exceeds the estimated waste acceptance rate in any year reported in this estimate, a revised five-year
estimate will be submitted to the administrator, or the Landfill may revert to the submittal of annual
NMOC emission reports.

Tier 2 landfill gas testing will be repeated in 2027. Based on the estimated 2027 NMOC emission
estimate, another five-year estimate of NMOC emissions is anticipated to be generated for the five-year
period beginning January 1, 2027; however, the reporting period will be evaluated at that time based on
the relevant data.

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7 REFERENCES
___________________________________________________________________________________

Kleinfelder. (2023). Test Protocol, Tier 2 Landfill Gas Testing, Logan Landfill, 153 North 1400 West Logan,
Utah. Proposed Test Dates: Week of September 11, 2023. Document Number: SLC23R156796,
dated August 7, 2023.
U.S. Environmental Protection Agency. (2017). 40 CFR, Part 60, Appendix A, Reference Methods 3C
and 25C.
U.S. Environmental Protection Agency. (2020). https://www.epa.gov/catc/clean-air-technology-center-
products#software. Website accessed October 18, 2023.
U.S. Environmental Protection Agency. (2021). 40 CFR, Part 62, Subpart OOO.

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APPENDIX A
TEST PROTOCOL
___________________________________________________________________________________

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LOGAN LANDFILL TEST PROTOCOL
TIER 2 LANDFILL GAS TESTING
NON-METHANE ORGANIC COMPOUND (NMOC)
153 NORTH 1400 WEST
LOGAN, UTAH 84321
KLEINFELDER PROJECT NO. 24001723.001A

AUGUST 7, 2023

Copyright 2023 Kleinfelder
All Rights Reserved

ONLY THE CLIENT OR ITS DESIGNATED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC PROJECT FOR WHICH THIS
REPORT WAS PREPARED.

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A Protocol Prepared for:

Mr. Tyler Richards
City of Logan
Utah Division of Air Quality
195 North 1950 West
Salt Lake City, UT 84116

LOGAN LANDFILL TEST PROTOCOL
TIER 2 LANDFILL GAS TESTING
NON-METHANE ORGANIC COMPOUND (NMOC)
153 NORTH 1400 WEST
LOGAN, UTAH 84321

Prepared by:

Annie Matzke
Professional

Amit Nair
Principal Air Quality Professional

KLEINFELDER
849 West Levoy Drive, Suite 200
Salt Lake City, Utah 84123
Phone: [phone]

August 7, 2023
Kleinfelder Project No.: 24001723.001A

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TABLE OF CONTENTS
___________________________________________________________________________________

Section Page
1 INTRODUCTION ..................................................................................................................... 1
1.1 1.1 SOURCE DESCRIPTION .................................................................................................. 1
1.2 1.2 TESTING LOCATION ....................................................................................................... 1
1.3 1.3 PROPOSED TEST DATES ................................................................................................. 1
1.4 1.4 CONTACTS ..................................................................................................................... 2
1.4.1 Facility Representative ........................................................................................... 2
1.4.2 Testing Company Personnel .................................................................................. 2
1.4.3 Analytical Laboratory Representative ................................................................... 2
2 TEST PROGRAM ..................................................................................................................... 3
2.1 2.1 GENERAL PROCEDURE .................................................................................................. 3
2.2 2.2 SAMPLING LOCATIONS ................................................................................................. 3
2.3 2.3 MODIFIED METHOD 25C ............................................................................................... 4
2.4 2.4 METHOD 3C .................................................................................................................. 5
3 QUALITY ASSURANCE/QUALITY CONTROL .............................................................................. 6
3.1 3.1 CALIBRATIONS ............................................................................................................... 6
3.2 3.2 SUMMA® CANISTERS ..................................................................................................... 6
3.3 3.3 DATA COLLECTION ........................................................................................................ 7
3.4 3.4 LABORATORY ANALYSIS ................................................................................................ 7
3.5 3.5 BACKUP SAMPLES ......................................................................................................... 7
4 REFERENCES .......................................................................................................................... 9

FIGURES
1 Site Location Map
2 Proposed Landfill Gas Probe Locations
3 Method 25C Sampling Schematic

APPENDICES
A Post-Run Tubing System Information

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1 INTRODUCTION
___________________________________________________________________________________

The City of Logan (City) has contracted Kleinfelder, Inc. (Kleinfelder) to provide Tier 2 emissions testing
services at the Logan Landfill (“Landfill”), located at 153 North 1400 West in Logan, Cache County, Utah.
The facility operates under Title V Operating Permit (#500103004). The testing will be conducted to
assess the site-specific concentration of non-methane organic compounds (CNMOC) within landfill gas
generated at the Landfill. The results of this testing will be used to estimate the annual NMOC emission
rate from the Landfill and to assess the need for a landfill gas collection and control system (LGCS), as
required by the Landfill’s Title V Operating Permit and federal New Source Performance Standards
(NSPS) for Municipal Solid Waste Landfills (40 CFR Part 62, Subpart OOO). Sampling and analysis will be
conducted according to 40 CFR Part 60 Appendix A, Methods 25C and 3C.

1.1 SOURCE DESCRIPTION
The Logan Landfill is an active Class I municipal solid waste (MSW) landfill that is owned and managed by
the City of Logan. The Landfill area containing waste that has been in place for two or more years
consists of approximately 30 acres (12.1 hectares) of land in Cache Valley, Utah. For this project,
sampling will be performed across the portions of the Landfill that contain waste over two years of age,
which meets the sampling requirements of Subpart OOO.

A Site location map of the facility is provided as Figure 1.

1.2 TESTING LOCATION
Logan Landfill
153 North 1400 West
Logan City, Utah

1.3 PROPOSED TEST DATES
Testing is anticipated to span approximately two to three days and is proposed to be completed during
the week of September 11, 2023.

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1.4 CONTACTS
1.4.1 Facility Representative
Mr. Tyler Richards
Environmental Engineer
Logan City
435.716.9756
Email: [e-mail]

1.4.2 Testing Company Personnel
Ms. Annie Matzke, Professional
Kleinfelder, Inc.
849 West Levoy Dr., Suite #200
Salt Lake City, Utah 84123-2544
801.261.3336
Email: [e-mail]

1.4.3 Analytical Laboratory Representative
Mr. Mark Johnson, Owner
Air Technology Laboratories, Inc.
18501 East Gale Avenue, Suite 130
City of Industry, CA 91748
626.964.4032
Email: [e-mail]

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2 TEST PROGRAM
___________________________________________________________________________________

2.1 GENERAL PROCEDURE
The CNMOC will be assessed through analysis of landfill gas samples collected from temporary borings
advanced across the Landfill. Borings will be advanced to an approximate depth of 15 to 25 feet below
the landfill cover across the landfill area where waste has been in place for two-plus years, in
accordance with Environmental Protection Agency (EPA) Method 25C. Figure 2 presents the proposed
approximate landfill gas sampling locations. A 2.5-inch diameter direct-push drill rig will be used to
advance the borings and obtain the samples. The methane, nitrogen, oxygen, and carbon dioxide
content of the gas will be screened using a portable landfill gas analyzer (Landtec® GEM5000 or
equivalent) prior to sampling to screen the samples for the quality control (QC) criteria referenced in
EPA Method 25C. The NMOC samples will be collected into the sampling containers through the
post-run tubing (PRT) system connected to the direct-push drill rig (described in Section 2.3).

Landfill gas samples, approximately one-liter in volume, will be collected from each sample location at a
rate not to exceed 0.5 liters per minute, measured through a rotameter, into a six-liter Summa®
evacuated canister (note that at the Site altitude, approximately 5,100 feet above sea level, the effective
canister volume will be reduced to approximately five liters).

Results of laboratory analyses will be used for estimation of the Site-specific CNMOC.

2.2 SAMPLING LOCATIONS
Tier 2 sampling, under Subpart OOO, requires sample collection from at least two boring locations per
hectare of landfill surface that has waste in place (WIP) over two years of age. If the landfill area to be
tested is larger than 25 hectares, a maximum of 50 sample boring locations are required. The Landfill
currently has approximately 12.1 hectares of potentially gas producing MSW. Twenty-five locations will
be sampled from WIP greater than two years at depths ranging from approximately 15 to 25 feet below
the landfill surface. Deeper borings may be required to reach eligible waste and prevent ambient air
intrusion. Depth of the borings will be based on the landfill gas screening results at the time of the
testing.

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Sample boring locations will be arranged to represent an even distribution of sample locations over a
current map of the Landfill area where waste has been in place for two years or more. Sample locations
will be marked in the field prior to sampling using survey lathe and flagging tape. Sample probe locations
may be adjusted within the flagged area if field gas screening results do not meet the quality control
criteria for Method 25C, if the probe is rejected by debris in the landfill, if insufficient gas is available for
sampling, or if subsurface landfill gas collection infrastructure is present in the boring location. The
sample probe locations may also be adjusted due to unsafe conditions, such as site inaccessibility, active
landfilling operations, and/ or steep terrain profiles on the side slopes. Typically, air infiltration through
temporary slope sidewall cover may contain landfill gas that may not pass the QC requirements of
Method 25C. For these reasons, proposed sampling locations will be concentrated on the relatively
flatter accessible portions of the Landfill. Approximate landfill gas probe locations are provided on
Figure 2.

2.3 MODIFIED METHOD 25C
Sample collection and analysis used to assess the CNMOC in the landfill gas will be conducted in
accordance with EPA Method 25C, with the following modifications noted in this section.

Landfill gas samples will be collected through the PRT system as illustrated in Method 25C. A schematic
of the Method 25C sampling system is provided as Figure 3. The PRT system consists of a hollow steel
drive rod and sampling head equipped with an expendable drive point to assist with placement by
direct-push methods. When the probe has reached the desired depth, the drive rod is pulled up
approximately six to twelve inches to create a small headspace, leaving the end of the probe open for
sample collection. A ¼-inch polyethylene tube is then inserted through the center of the drive rod and
connected to the sampling head by an airtight threaded fitting. Gas is then withdrawn though the
tubing. A schematic of the post-run tubing system is provided with this Protocol in Appendix A. The
post-run tubing system will be placed using the direct-push type drilling rig.

The ¼-inch polyethylene sample tubing will be connected to a stainless-steel flow control manifold
containing a fine-flow controller, a flow-indicating rotameter, and a three-way purge/sample valve. The
Summa® canister will be attached to the sampling train behind the purge/sample valve. Prior to
sampling, the landfill gas analyzer (Landtec GEM5000 portable landfill gas analyzer or equivalent) that
is connected to the purge side of the three-way valve will be used to draw LFG through the probe and
tubing. A minimum of two sample tubing volumes of LFG purged through the sampling train prior to
collection of the samples. The landfill gas analyzer will be used to assess if the nitrogen content of the

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landfill gas is below 20 percent; if nitrogen content remains above 20 percent, an alternative QC
requirement of oxygen content less than 5 percent is allowed by EPA Method 25C.

A minimum one-liter landfill gas sample from each location will be drawn through the sampling train and
into a six-liter Summa® canister at a sampling rate not to exceed approximately 0.50 liters per minute.
Individual samples from three sampling locations will be composited into one canister, as allowed by
Subpart OOO. Landfill gas may contain explosive levels of methane; therefore, the canisters are shipped
from the laboratory containing approximately one liter of helium. This is done to inert the final sample
to avoid hazardous shipment procedures when returning samples to the laboratory. Combined with the
reduced effective volume of the canister due to the Landfill altitude and a need to ship the canister
under a slight negative pressure, a maximum of three sample locations will be composited into each
canister. The sampling train will be purged with helium between each boring and canister to prevent
cross-contamination between samples.

Summa® canisters are cleaned, polished, and leak-checked prior to shipment from the laboratory.
Vacuum readings will be recorded prior to and immediately after sampling at each location, and again
prior to shipment back to the laboratory. Upon laboratory receipt, the vacuum readings in the canisters
will be recorded to assess whether leaks have occurred during shipment. This procedure is discussed
further in Section 3.2 of this Test Protocol.

Samples from the 25 probe locations will be collected in a total of nine Summa® canisters. Each of the
nine composite-sample canisters will be analyzed for NMOC in triplicate as required by Method 25C. The
analytical results from the canisters will be averaged to estimate the average CNMOC (as carbon) of the
landfill gas. The CNMOC as carbon (reported by Method 25C) will be divided by six and reported as hexane
for calculation of NMOC emissions from the landfill facility, as specified in Subpart OOO regulations.

2.4 METHOD 3C
EPA Method 3C will be used primarily to evaluate the percentage of nitrogen and oxygen in each
composite sample. The presence of excess nitrogen or oxygen in a sample indicates infiltration of
ambient air into the gas sample. EPA Method 25C stipulates that the nitrogen content must be less than
20 percent for the sample to be acceptable. Because prior testing has indicated that many landfills may
contain in-situ nitrogen levels above 20 percent, EPA allows an alternative requirement of less than 5
percent oxygen if nitrogen exceeds the 20 percent threshold. Preliminary nitrogen and oxygen screening
will be performed in the field using the landfill gas analyzer to minimize the potential for sample
rejection due to excessive nitrogen or oxygen content.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
3 QUALITY ASSURANCE/QUALITY CONTROL
___________________________________________________________________________________

3.1 CALIBRATIONS
The landfill gas analyzer will be calibrated daily for methane and oxygen. Documentation of the
calibration will be recorded and maintained by Kleinfelder and made available upon request.

3.2 SUMMA® CANISTERS
Summa® canisters will be certified clean, in accordance with the patented Summa® process, prior to
shipment by Air Technology Laboratories. Documentation of canister cleanliness and regular canister
blank test audits are kept on file by the laboratory.

Canisters are shipped under approximately -30 inches of mercury (Hg) vacuum (effectively
-18 to -21 inches Hg at the Landfill altitude).

The canister vacuum will be recorded prior to and immediately after sampling at each probe location.
Upon laboratory receipt, the laboratory personnel will record vacuum readings in the canisters to check
that no leaks have occurred during shipment. Sample containers must maintain a negative pressure, or
vacuum, throughout the sampling and analysis procedure for sample integrity verification.

We will attempt to ship the canisters back to the laboratory on the sampling day. If canisters are shipped
the same day as the sampling, then the sampling pressure recorded upon laboratory receipt will be
considered sufficient for the recorded pre-shipment pressure. If canisters are held for more than one
day after sampling, the canister vacuum will be recorded again prior to return shipment to the
laboratory.

Appropriate data sheets showing recorded canister pressures will be included with the test report. Each
canister has a unique serial number, which will be recorded on the appropriate sampling form, as well as
on the chain-of-custody.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
3.3 DATA COLLECTION
Field data sheets will be maintained throughout the sampling event. At each sample location the
following data will be recorded:

• Probe (boring) identification number,
• Probe location, if relocated due to conditions specified in Section 2.2,
• Landfill gas parameters during the purge process,
• Pre-and post-sample canister pressure measurements,
• Canister serial number, and
• Sampling start and end times.

Additionally, the following data will be recorded on the field data sheets:

• Ambient temperature (°F), and
• General weather conditions.

Samples collected will be handled under general chain of custody requirements, in accordance with
standard environmental sampling protocol.

3.4 LABORATORY ANALYSIS
Method 25C and Method 3C each have Quality Assurance/Quality Control (QA/QC) requirements
pertaining to gas chromatograph operation and calibration. The selected analytical laboratory will
adhere to QA/QC requirements, as specified by the methods. Relevant QA/QC data will be included in
the test report.

3.5 BACKUP SAMPLES
Two extra Summa® canister will be kept in reserve in case a replacement canister is needed. An
additional landfill gas sample will be collected from every fifth sampling probe location and composited
into the extra canisters, creating two backup samples from the 25 sampling locations which will be
representative of the gas samples composited into the other canisters. The backup canisters will also be
shipped under chain-of-custody but will be held in abeyance without analysis by the laboratory.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
If one or more of the original nine sample canisters fails quality control parameters due to intrusion of
ambient air (i.e., nitrogen greater than 20% or oxygen greater than 5%), then the backup canister(s) will
be submitted as a replacement for analysis.

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849 West Levoy Drive, Suite 200, Taylorsville, UT 84123-2544 p | 801.261.3336
4 REFERENCES
___________________________________________________________________________________

Geoprobe® Systems. (1996). “Sampling Tools and Equipment Description.”
U.S. Environmental Protection Agency. (2017). 40 CFR, Part 60, Appendix A, Reference Methods 3C
and 25C.
U.S. Environmental Protection Agency. (2021). 40 CFR, Part 62, Subpart OOO.

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FILE: \\azrgisstorp03\GIS_Projects\Client\SLC_Office\24001723_LoganLandfill\24001723_Fig1.mxd
PLOTTED: 8/4/2023 2:10:31 PM, RAlvarez
SITE LOCATION MAPPROJECT:
FILE NAME:
FIGURE
1DRAWN:
CHECKED BY:
DRAWN BY:
24001723_Fig1.mxd
R. ALVAREZ
A. MATZKE TEST PROTOCOL, TIER 2 LANDFILL GAS TESTINGNON-METHANE ORGANIC COMPOUND (NMOC)LOGAN LANDFILL153 NORTH 1400 WESTLOGAN, UTAH 84321
24001723
AUG 2023
The information included on this graphic representation has beencompiled from a variety of sources and is subject to change withoutnotice. Kleinfelder makes no representations or warranties, express orimplied, as to accuracy, completeness, timeliness, or rights to the use ofsuch information. This document is not intended for use as a land surveyproduct nor is it designed or intended as a construction design document.The use or misuse of the information contained on this graphicrepresentation is at the sole risk of the party using or misusing theinformation.
SITE MAP WITH PROPOSEDAPPROXIMATE BORING LOCATIONS
TEST PROTOCOL, TIER 2 LANDFILL GAS TESTINGNON-METHANE ORGANIC COMPOUND (NMOC)LOGAN LANDFILL153 NORTH 1400 WESTLOGAN, UTAH 84321
PROJECT:FIGURE
2DRAWN:
DRAWN BY:
CHECKED BY:
Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS usercommunity© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) DistributionAirbus DS © 2023 TomTom; ESRI World Imagery, San Bernardino
FILE NAME:24001723_Fig2.mxd
24001723
AUG 2023
R. ALVAREZ
A. MATZKE
PLOTTED: 8/4/2023 2:33
:20 PM, RAlvarez
\\azrgisstorp03
\GIS_Projects\Client\SLC_Office\24001723_LoganLandfill\24001723_Fig2.mxd
The information included on this graphic representation has beencompiled from a variety of sources and is subject to change withoutnotice. Kleinfelder makes no representations or warranties, express orimplied, as to accuracy, completeness, timeliness, or rights to the use ofsuch information. This document is not intended for use as a landsurvey product nor is it designed or intended as a construction designdocument. The use or misuse of the information contained on thisgraphic representation is at the sole risk of the party using or misusingthe information.
£
LEGEND
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Approximate SiteBoundary
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Expendable point
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rod
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Sample line
Atmospheric
dump
Canister
valve
Vacuum gauge
Three way
valve
6-liter
Summa
Canister
TM
Airtight threaded fitting
Solid Waste
NOT TO SCALE
FILE NAME:
NorthValley_schem.dwg
DRAWN BY:
CHECKED BY:
DRAWN:
PROJECT NO.
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The information included on this graphic representation has been compiled from a variety of
sources and is subject to change without notice. Kleinfelder makes no representations or
warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of
such information. This document is not intended for use as a land survey product nor is it
designed or intended as a construction design document. The use or misuse of the information
contained on this graphic representation is at the sole risk of the party using or misusing the
information.
NORTH VALLEY LANDFILL
14200 STINK CREEK ROAD
LOGAN CITY, UTAH
FIGURE
3JP
KN
9/27/2021
20222825
METHOD 25c SAMPLING
SCHEMATIC
TEST PROTOCOL, TIER 2 LANDFILL GAS TESTING
NON-METHANE ORGANIC COMPOUND (NMOC)
LOGAN LANDFILL
153 NORTH 1400 WEST
LOGAN, UTAH 84321
24001723
AUG 2023
R. ALVAREZ
A. MATZKE
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APPENDIX A
POST-RUN TUBING SYSTEM INFORMATION
___________________________________________________________________________________

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APPENDIX B
FIELD DATA FORMS
___________________________________________________________________________________

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APPENDIX C
LABORATORY ANALYTICAL DATA
___________________________________________________________________________________

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APPENDIX D
LANDGEM MODEL REPORT
___________________________________________________________________________________

App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Summary Report
Landfill Name or Identifier: City of Logan Landfill
Date:
First-Order Decomposition Rate Equation:
Where,
QCH4 = annual methane generation in the year of the calculation (m 3 /year )
i = 1-year time increment Mi = mass of waste accepted in the ith year (Mg )
n = (year of the calculation) - (initial year of waste acceptance)
j = 0.1-year time increment
k = methane generation rate (year -1 )
L0 = potential methane generation capacity (m 3 /Mg )
Thursday, November 9, 2023
LandGEM is based on a first-order decomposition rate equation for quantifying emissions from the decomposition of landfilled waste in
municipal solid waste (MSW) landfills. The software provides a relatively simple approach to estimating landfill gas emissions. Model defaults
are based on empirical data from U.S. landfills. Field test data can also be used in place of model defaults when available. Further guidance on
EPA test methods, Clean Air Act (CAA) regulations, and other guidance regarding landfill gas emissions and control technology requirements
can be found at http://www.epa.gov/ttnatw01/landfill/landflpg.html.
Description/Comments:
tij = age of the jth section of waste mass Mi accepted in the ith year
(decimal years , e.g., 3.2 years)
LandGEM is considered a screening tool — the better the input data, the better the estimates. Often, there are limitations with the available
data regarding waste quantity and composition, variation in design and operating practices over time, and changes occurring over time that
impact the emissions potential. Changes to landfill operation, such as operating under wet conditions through leachate recirculation or other
liquid additions, will result in generating more gas at a faster rate. Defaults for estimating emissions for this type of operation are being
developed to include in LandGEM along with defaults for convential landfills (no leachate or liquid additions) for developing emission
inventories and determining CAA applicability. Refer to the Web site identified above for future updates.
Landgem for Tier 2 NMOC estimate report October 2023
About LandGEM:
REPORT - 1
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Input Review
LANDFILL CHARACTERISTICS
Landfill Open Year 1960
Landfill Closure Year (with 80-year limit)2039
Actual Closure Year (without limit)2046
Have Model Calculate Closure Year?Yes
Waste Design Capacity 6,011,732 short tons
MODEL PARAMETERS
Methane Generation Rate, k 0.020 year -1
Potential Methane Generation Capacity, L0 170 m 3 /Mg
NMOC Concentration 99 ppmv as hexane
Methane Content 50 % by volume
GASES / POLLUTANTS SELECTED
Gas / Pollutant #1:NMOC
Gas / Pollutant #2:Methane
Gas / Pollutant #3:Carbon dioxide
Gas / Pollutant #4:Total landfill gas
WASTE ACCEPTANCE RATES
(Mg/year)(short tons/year)(Mg)(short tons)
1960 3,405 3,746 0 0
1961 3,471 3,818 3,405 3,746
1962 3,890 4,279 6,876 7,564
1963 4,323 4,755 10,766 11,843
1964 4,768 5,245 15,089 16,598
1965 5,226 5,749 19,857 21,843
1966 5,888 6,477 25,084 27,592
1967 6,569 7,226 30,972 34,069
1968 7,270 7,997 37,541 41,295
1969 7,990 8,789 44,811 49,292
1970 8,730 9,603 52,801 58,081
1971 9,528 10,481 61,531 67,684
1972 10,350 11,385 71,059 78,165
1973 11,197 12,317 81,409 89,550
1974 12,068 13,275 92,606 101,867
1975 27,002 29,702 104,675 115,142
1976 28,971 31,868 131,676 144,844
1977 30,992 34,091 160,647 176,712
1978 33,066 36,373 191,639 210,803
1979 35,195 38,714 224,705 247,176
1980 37,375 41,113 259,900 285,890
1981 39,814 43,795 297,275 327,003
1982 42,321 46,553 337,089 370,798
1983 44,898 49,388 379,410 417,351
1984 47,545 52,299 424,308 466,739
1985 50,262 55,288 471,853 519,038
1986 53,048 58,353 522,115 574,326
1987 55,904 61,494 575,163 632,679
1988 58,665 64,531 631,066 694,173
1989 61,727 67,900 689,731 758,704
1990 64,889 71,378 751,458 826,604
1991 68,153 74,968 816,347 897,982
1992 70,288 77,317 884,500 972,950
1993 70,750 77,825 954,788 1,050,267
1994 69,622 76,584 1,025,538 1,128,092
1995 77,106 84,817 1,095,160 1,204,676
1996 80,252 88,277 1,172,266 1,289,493
1997 86,175 94,792 1,252,518 1,377,770
1998 90,655 99,720 1,338,693 1,472,562
1999 85,669 94,236 1,429,348 1,572,282
Year Waste Accepted Waste-In-Place
The 80-year waste acceptance limit of the model has been
exceeded before the Waste Design Capacity was reached.
The model will assume the 80th year of waste acceptance as
the final year to estimate emissions. See Section 2.6 of the
User's Manual.
REPORT - 2
2023 NMOC Conc.
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
WASTE ACCEPTANCE RATES (Continued)
(Mg/year)(short tons/year)(Mg)(short tons)
2000 113,558 124,914 1,515,017 1,666,518
2001 98,780 108,658 1,628,575 1,791,432
2002 88,862 97,748 1,727,355 1,900,090
2003 99,268 109,195 1,816,217 1,997,838
2004 94,282 103,710 1,915,485 2,107,033
2005 98,062 107,868 2,009,767 2,210,743
2006 104,499 114,949 2,107,828 2,318,611
2007 96,895 106,585 2,212,327 2,433,560
2008 96,602 106,262 2,309,223 2,540,145
2009 86,327 94,960 2,405,825 2,646,407
2010 84,332 92,765 2,492,152 2,741,367
2011 93,713 103,084 2,576,484 2,834,132
2012 90,134 99,147 2,670,196 2,937,216
2013 98,223 108,045 2,760,330 3,036,363
2014 92,535 101,788 2,858,553 3,144,408
2015 108,551 119,406 2,951,087 3,246,196
2016 109,708 120,679 3,059,638 3,365,602
2017 112,765 124,041 3,169,346 3,486,281
2018 40,131 44,144 3,282,111 3,610,322
2019 67,804 74,584 3,322,242 3,654,466
2020 74,096 81,506 3,390,046 3,729,050
2021 59,934 65,927 3,464,142 3,810,556
2022 66,496 73,146 3,524,076 3,876,483
2023 69,156 76,072 3,590,572 3,949,629
2024 71,922 79,115 3,659,728 4,025,701
2025 74,799 82,279 3,731,651 4,104,816
2026 77,791 85,570 3,806,450 4,187,095
2027 80,903 88,993 3,884,241 4,272,666
2028 80,903 88,993 3,965,144 4,361,659
2029 80,903 88,993 4,046,047 4,450,652
2030 80,903 88,993 4,126,950 4,539,646
2031 80,903 88,993 4,207,853 4,628,639
2032 80,903 88,993 4,288,756 4,717,632
2033 80,903 88,993 4,369,659 4,806,625
2034 80,903 88,993 4,450,562 4,895,619
2035 80,903 88,993 4,531,465 4,984,612
2036 80,903 88,993 4,612,368 5,073,605
2037 80,903 88,993 4,693,271 5,162,599
2038 80,903 88,993 4,774,174 5,251,592
2039 80,903 88,993 4,855,077 5,340,585
Year Waste Accepted Waste-In-Place
REPORT - 3
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Pollutant Parameters
Concentration Concentration
Compound (ppmv )Molecular Weight (ppmv )Molecular Weight
Total landfill gas 0.00
Methane 16.04
Carbon dioxide 44.01
NMOC 4,000 86.18
1,1,1-Trichloroethane
(methyl chloroform) -
HAP 0.48 133.41
1,1,2,2-
Tetrachloroethane -
HAP/VOC 1.1 167.85
1,1-Dichloroethane
(ethylidene dichloride) -
HAP/VOC 2.4 98.97
1,1-Dichloroethene
(vinylidene chloride) -
HAP/VOC 0.20 96.94
1,2-Dichloroethane
(ethylene dichloride) -
HAP/VOC 0.41 98.96
1,2-Dichloropropane
(propylene dichloride) -
HAP/VOC 0.18 112.99
2-Propanol (isopropyl
alcohol) - VOC 50 60.11
Acetone 7.0 58.08
Acrylonitrile - HAP/VOC 6.3 53.06
Benzene - No or
Unknown Co-disposal -
HAP/VOC 1.9 78.11
Benzene - Co-disposal -
HAP/VOC 11 78.11
Bromodichloromethane -
VOC 3.1 163.83
Butane - VOC 5.0 58.12
Carbon disulfide -
HAP/VOC 0.58 76.13
Carbon monoxide 140 28.01
Carbon tetrachloride -
HAP/VOC 4.0E-03 153.84
Carbonyl sulfide -
HAP/VOC 0.49 60.07
Chlorobenzene -
HAP/VOC 0.25 112.56
Chlorodifluoromethane 1.3 86.47
Chloroethane (ethyl
chloride) - HAP/VOC 1.3 64.52
Chloroform - HAP/VOC 0.03 119.39
Chloromethane - VOC 1.2 50.49
Dichlorobenzene - (HAP
for para isomer/VOC)0.21 147
Dichlorodifluoromethane 16 120.91
Dichlorofluoromethane -
VOC 2.6 102.92
Dichloromethane
(methylene chloride) -
HAP 14 84.94
Dimethyl sulfide (methyl
sulfide) - VOC 7.8 62.13
Ethane 890 30.07
Ethanol - VOC 27 46.08
Ga
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e
s
Gas / Pollutant Default Parameters:
Po
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t
a
n
t
s
User-specified Pollutant Parameters:
REPORT - 4
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Pollutant Parameters (Continued)
Concentration Concentration
Compound (ppmv )Molecular Weight (ppmv )Molecular Weight
Ethyl mercaptan
(ethanethiol) - VOC 2.3 62.13
Ethylbenzene -
HAP/VOC 4.6 106.16
Ethylene dibromide -
HAP/VOC 1.0E-03 187.88
Fluorotrichloromethane -
VOC 0.76 137.38
Hexane - HAP/VOC 6.6 86.18
Hydrogen sulfide 36 34.08
Mercury (total) - HAP 2.9E-04 200.61
Methyl ethyl ketone -
HAP/VOC 7.1 72.11
Methyl isobutyl ketone -
HAP/VOC 1.9 100.16
Methyl mercaptan - VOC 2.5 48.11
Pentane - VOC 3.3 72.15
Perchloroethylene
(tetrachloroethylene) -
HAP 3.7 165.83
Propane - VOC 11 44.09
t-1,2-Dichloroethene -
VOC 2.8 96.94
Toluene - No or
Unknown Co-disposal -
HAP/VOC 39 92.13
Toluene - Co-disposal -
HAP/VOC 170 92.13
Trichloroethylene
(trichloroethene) -
HAP/VOC 2.8 131.40
Vinyl chloride -
HAP/VOC 7.3 62.50
Xylenes - HAP/VOC 12 106.16
User-specified Pollutant Parameters:Gas / Pollutant Default Parameters:
Po
l
l
u
t
a
n
t
s
REPORT - 5
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
REPORT - 6
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Graphs
0.000E+00
5.000E+03
1.000E+04
1.500E+04
2.000E+04
2.500E+04
Em
i
s
s
i
o
n
s
Year
Megagrams Per Year
NMOC Methane Carbon dioxide Total landfill gas
0.000E+00
2.000E+06
4.000E+06
6.000E+06
8.000E+06
1.000E+07
1.200E+07
1.400E+07
1.600E+07
1.800E+07
2.000E+07
Em
i
s
s
i
o
n
s
Year
Cubic Meters Per Year
NMOC Methane Carbon dioxide Total landfill gas
0.000E+00
2.000E+02
4.000E+02
6.000E+02
8.000E+02
1.000E+03
1.200E+03
1.400E+03
Em
i
s
s
i
o
n
s
Year
User-specified Unit (units shown in legend below)
NMOC (av ft^3/min)Methane (av ft^3/min)
Carbon dioxide (av ft^3/min)Total landfill gas (av ft^3/min)
REPORT - 7
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
1960 0 0 0 0 0 0
1961 8.169E-03 2.279E+00 1.531E-04 7.656E+00 1.147E+04 7.710E-01
1962 1.633E-02 4.557E+00 3.062E-04 1.531E+01 2.294E+04 1.542E+00
1963 2.534E-02 7.070E+00 4.750E-04 2.375E+01 3.560E+04 2.392E+00
1964 3.521E-02 9.822E+00 6.600E-04 3.300E+01 4.946E+04 3.323E+00
1965 4.595E-02 1.282E+01 8.613E-04 4.306E+01 6.455E+04 4.337E+00
1966 5.757E-02 1.606E+01 1.079E-03 5.396E+01 8.088E+04 5.434E+00
1967 7.056E-02 1.968E+01 1.323E-03 6.613E+01 9.912E+04 6.660E+00
1968 8.492E-02 2.369E+01 1.592E-03 7.958E+01 1.193E+05 8.015E+00
1969 1.007E-01 2.809E+01 1.887E-03 9.435E+01 1.414E+05 9.502E+00
1970 1.178E-01 3.288E+01 2.209E-03 1.104E+02 1.655E+05 1.112E+01
1971 1.365E-01 3.807E+01 2.558E-03 1.279E+02 1.917E+05 1.288E+01
1972 1.566E-01 4.369E+01 2.936E-03 1.468E+02 2.200E+05 1.478E+01
1973 1.783E-01 4.975E+01 3.343E-03 1.671E+02 2.505E+05 1.683E+01
1974 2.017E-01 5.626E+01 3.780E-03 1.890E+02 2.833E+05 1.903E+01
1975 2.266E-01 6.322E+01 4.248E-03 2.124E+02 3.183E+05 2.139E+01
1976 2.869E-01 8.004E+01 5.378E-03 2.689E+02 4.030E+05 2.708E+01
1977 3.507E-01 9.784E+01 6.574E-03 3.287E+02 4.927E+05 3.310E+01
1978 4.181E-01 1.166E+02 7.837E-03 3.918E+02 5.873E+05 3.946E+01
1979 4.891E-01 1.365E+02 9.169E-03 4.584E+02 6.871E+05 4.617E+01
1980 5.639E-01 1.573E+02 1.057E-02 5.285E+02 7.921E+05 5.322E+01
1981 6.424E-01 1.792E+02 1.204E-02 6.020E+02 9.024E+05 6.063E+01
1982 7.252E-01 2.023E+02 1.359E-02 6.796E+02 1.019E+06 6.844E+01
1983 8.123E-01 2.266E+02 1.523E-02 7.613E+02 1.141E+06 7.667E+01
1984 9.039E-01 2.522E+02 1.694E-02 8.471E+02 1.270E+06 8.532E+01
1985 1.000E+00 2.790E+02 1.875E-02 9.372E+02 1.405E+06 9.439E+01
1986 1.101E+00 3.071E+02 2.063E-02 1.032E+03 1.546E+06 1.039E+02
1987 1.206E+00 3.365E+02 2.261E-02 1.130E+03 1.695E+06 1.139E+02
1988 1.316E+00 3.673E+02 2.468E-02 1.234E+03 1.849E+06 1.243E+02
1989 1.431E+00 3.993E+02 2.683E-02 1.341E+03 2.010E+06 1.351E+02
1990 1.551E+00 4.327E+02 2.907E-02 1.453E+03 2.179E+06 1.464E+02
1991 1.676E+00 4.675E+02 3.141E-02 1.571E+03 2.354E+06 1.582E+02
1992 1.806E+00 5.039E+02 3.386E-02 1.693E+03 2.537E+06 1.705E+02
1993 1.939E+00 5.409E+02 3.635E-02 1.817E+03 2.724E+06 1.830E+02
1994 2.070E+00 5.776E+02 3.881E-02 1.940E+03 2.908E+06 1.954E+02
1995 2.196E+00 6.127E+02 4.117E-02 2.058E+03 3.085E+06 2.073E+02
1996 2.338E+00 6.522E+02 4.382E-02 2.191E+03 3.284E+06 2.206E+02
1997 2.484E+00 6.930E+02 4.656E-02 2.328E+03 3.489E+06 2.344E+02
1998 2.641E+00 7.369E+02 4.951E-02 2.476E+03 3.711E+06 2.493E+02
1999 2.807E+00 7.830E+02 5.261E-02 2.630E+03 3.943E+06 2.649E+02
2000 2.957E+00 8.248E+02 5.542E-02 2.771E+03 4.153E+06 2.791E+02
2001 3.170E+00 8.845E+02 5.943E-02 2.971E+03 4.454E+06 2.992E+02
2002 3.345E+00 9.331E+02 6.269E-02 3.134E+03 4.698E+06 3.157E+02
2003 3.492E+00 9.741E+02 6.545E-02 3.272E+03 4.905E+06 3.295E+02
2004 3.660E+00 1.021E+03 6.861E-02 3.431E+03 5.142E+06 3.455E+02
2005 3.814E+00 1.064E+03 7.150E-02 3.575E+03 5.358E+06 3.600E+02
2006 3.974E+00 1.109E+03 7.449E-02 3.724E+03 5.582E+06 3.751E+02
2007 4.146E+00 1.157E+03 7.771E-02 3.885E+03 5.824E+06 3.913E+02
2008 4.296E+00 1.199E+03 8.053E-02 4.026E+03 6.035E+06 4.055E+02
2009 4.443E+00 1.239E+03 8.328E-02 4.164E+03 6.241E+06 4.193E+02
Year NMOC Methane
REPORT - 8
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results (Continued)
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
2010 4.562E+00 1.273E+03 8.551E-02 4.275E+03 6.408E+06 4.306E+02
2011 4.674E+00 1.304E+03 8.761E-02 4.380E+03 6.566E+06 4.411E+02
2012 4.806E+00 1.341E+03 9.009E-02 4.504E+03 6.751E+06 4.536E+02
2013 4.927E+00 1.375E+03 9.236E-02 4.618E+03 6.921E+06 4.650E+02
2014 5.065E+00 1.413E+03 9.495E-02 4.747E+03 7.115E+06 4.781E+02
2015 5.187E+00 1.447E+03 9.723E-02 4.861E+03 7.286E+06 4.896E+02
2016 5.345E+00 1.491E+03 1.002E-01 5.009E+03 7.508E+06 5.044E+02
2017 5.502E+00 1.535E+03 1.031E-01 5.156E+03 7.729E+06 5.193E+02
2018 5.663E+00 1.580E+03 1.062E-01 5.308E+03 7.956E+06 5.345E+02
2019 5.648E+00 1.576E+03 1.059E-01 5.293E+03 7.933E+06 5.330E+02
2020 5.698E+00 1.590E+03 1.068E-01 5.340E+03 8.005E+06 5.378E+02
2021 5.763E+00 1.608E+03 1.080E-01 5.401E+03 8.096E+06 5.440E+02
2022 5.793E+00 1.616E+03 1.086E-01 5.429E+03 8.138E+06 5.468E+02
2023 5.838E+00 1.629E+03 1.094E-01 5.471E+03 8.200E+06 5.510E+02
2024 5.888E+00 1.643E+03 1.104E-01 5.518E+03 8.271E+06 5.557E+02
2025 5.944E+00 1.658E+03 1.114E-01 5.570E+03 8.350E+06 5.610E+02
2026 6.006E+00 1.675E+03 1.126E-01 5.628E+03 8.436E+06 5.668E+02
2027 6.073E+00 1.694E+03 1.138E-01 5.692E+03 8.531E+06 5.732E+02
2028 6.147E+00 1.715E+03 1.152E-01 5.761E+03 8.635E+06 5.802E+02
2029 6.219E+00 1.735E+03 1.166E-01 5.829E+03 8.737E+06 5.870E+02
2030 6.290E+00 1.755E+03 1.179E-01 5.895E+03 8.836E+06 5.937E+02
2031 6.360E+00 1.774E+03 1.192E-01 5.960E+03 8.934E+06 6.003E+02
2032 6.428E+00 1.793E+03 1.205E-01 6.024E+03 9.030E+06 6.067E+02
2033 6.495E+00 1.812E+03 1.217E-01 6.087E+03 9.124E+06 6.130E+02
2034 6.560E+00 1.830E+03 1.230E-01 6.148E+03 9.215E+06 6.192E+02
2035 6.624E+00 1.848E+03 1.242E-01 6.208E+03 9.306E+06 6.252E+02
2036 6.687E+00 1.866E+03 1.254E-01 6.267E+03 9.394E+06 6.312E+02
2037 6.749E+00 1.883E+03 1.265E-01 6.325E+03 9.481E+06 6.370E+02
2038 6.809E+00 1.900E+03 1.276E-01 6.382E+03 9.565E+06 6.427E+02
2039 6.869E+00 1.916E+03 1.288E-01 6.437E+03 9.649E+06 6.483E+02
2040 6.927E+00 1.932E+03 1.298E-01 6.491E+03 9.730E+06 6.538E+02
2041 6.790E+00 1.894E+03 1.273E-01 6.363E+03 9.538E+06 6.408E+02
2042 6.655E+00 1.857E+03 1.247E-01 6.237E+03 9.349E+06 6.281E+02
2043 6.523E+00 1.820E+03 1.223E-01 6.113E+03 9.164E+06 6.157E+02
2044 6.394E+00 1.784E+03 1.199E-01 5.992E+03 8.982E+06 6.035E+02
2045 6.268E+00 1.749E+03 1.175E-01 5.874E+03 8.804E+06 5.916E+02
2046 6.143E+00 1.714E+03 1.152E-01 5.757E+03 8.630E+06 5.798E+02
2047 6.022E+00 1.680E+03 1.129E-01 5.643E+03 8.459E+06 5.684E+02
2048 5.903E+00 1.647E+03 1.106E-01 5.532E+03 8.292E+06 5.571E+02
2049 5.786E+00 1.614E+03 1.085E-01 5.422E+03 8.127E+06 5.461E+02
2050 5.671E+00 1.582E+03 1.063E-01 5.315E+03 7.966E+06 5.353E+02
2051 5.559E+00 1.551E+03 1.042E-01 5.210E+03 7.809E+06 5.247E+02
2052 5.449E+00 1.520E+03 1.021E-01 5.106E+03 7.654E+06 5.143E+02
2053 5.341E+00 1.490E+03 1.001E-01 5.005E+03 7.502E+06 5.041E+02
2054 5.235E+00 1.460E+03 9.813E-02 4.906E+03 7.354E+06 4.941E+02
2055 5.131E+00 1.432E+03 9.619E-02 4.809E+03 7.208E+06 4.843E+02
2056 5.030E+00 1.403E+03 9.428E-02 4.714E+03 7.066E+06 4.747E+02
2057 4.930E+00 1.375E+03 9.242E-02 4.620E+03 6.926E+06 4.653E+02
2058 4.833E+00 1.348E+03 9.059E-02 4.529E+03 6.789E+06 4.561E+02
2059 4.737E+00 1.322E+03 8.879E-02 4.439E+03 6.654E+06 4.471E+02
2060 4.643E+00 1.295E+03 8.703E-02 4.351E+03 6.522E+06 4.382E+02
NMOCYear Methane
REPORT - 9
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results (Continued)
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
2061 4.551E+00 1.270E+03 8.531E-02 4.265E+03 6.393E+06 4.296E+02
2062 4.461E+00 1.245E+03 8.362E-02 4.181E+03 6.267E+06 4.211E+02
2063 4.373E+00 1.220E+03 8.197E-02 4.098E+03 6.143E+06 4.127E+02
2064 4.286E+00 1.196E+03 8.034E-02 4.017E+03 6.021E+06 4.045E+02
2065 4.201E+00 1.172E+03 7.875E-02 3.937E+03 5.902E+06 3.965E+02
2066 4.118E+00 1.149E+03 7.719E-02 3.859E+03 5.785E+06 3.887E+02
2067 4.037E+00 1.126E+03 7.566E-02 3.783E+03 5.670E+06 3.810E+02
2068 3.957E+00 1.104E+03 7.417E-02 3.708E+03 5.558E+06 3.734E+02
2069 3.878E+00 1.082E+03 7.270E-02 3.635E+03 5.448E+06 3.660E+02
2070 3.801E+00 1.061E+03 7.126E-02 3.563E+03 5.340E+06 3.588E+02
2071 3.726E+00 1.040E+03 6.985E-02 3.492E+03 5.234E+06 3.517E+02
2072 3.652E+00 1.019E+03 6.846E-02 3.423E+03 5.131E+06 3.447E+02
2073 3.580E+00 9.988E+02 6.711E-02 3.355E+03 5.029E+06 3.379E+02
2074 3.509E+00 9.790E+02 6.578E-02 3.289E+03 4.929E+06 3.312E+02
2075 3.440E+00 9.596E+02 6.448E-02 3.224E+03 4.832E+06 3.247E+02
2076 3.372E+00 9.406E+02 6.320E-02 3.160E+03 4.736E+06 3.182E+02
2077 3.305E+00 9.220E+02 6.195E-02 3.097E+03 4.642E+06 3.119E+02
2078 3.239E+00 9.037E+02 6.072E-02 3.036E+03 4.550E+06 3.057E+02
2079 3.175E+00 8.858E+02 5.952E-02 2.976E+03 4.460E+06 2.997E+02
2080 3.112E+00 8.683E+02 5.834E-02 2.917E+03 4.372E+06 2.938E+02
2081 3.051E+00 8.511E+02 5.719E-02 2.859E+03 4.285E+06 2.879E+02
2082 2.990E+00 8.342E+02 5.605E-02 2.802E+03 4.201E+06 2.822E+02
2083 2.931E+00 8.177E+02 5.494E-02 2.747E+03 4.117E+06 2.767E+02
2084 2.873E+00 8.015E+02 5.385E-02 2.693E+03 4.036E+06 2.712E+02
2085 2.816E+00 7.857E+02 5.279E-02 2.639E+03 3.956E+06 2.658E+02
2086 2.760E+00 7.701E+02 5.174E-02 2.587E+03 3.878E+06 2.605E+02
2087 2.706E+00 7.549E+02 5.072E-02 2.536E+03 3.801E+06 2.554E+02
2088 2.652E+00 7.399E+02 4.971E-02 2.486E+03 3.726E+06 2.503E+02
2089 2.600E+00 7.253E+02 4.873E-02 2.436E+03 3.652E+06 2.454E+02
2090 2.548E+00 7.109E+02 4.777E-02 2.388E+03 3.580E+06 2.405E+02
2091 2.498E+00 6.968E+02 4.682E-02 2.341E+03 3.509E+06 2.357E+02
2092 2.448E+00 6.830E+02 4.589E-02 2.294E+03 3.439E+06 2.311E+02
2093 2.400E+00 6.695E+02 4.498E-02 2.249E+03 3.371E+06 2.265E+02
2094 2.352E+00 6.562E+02 4.409E-02 2.204E+03 3.304E+06 2.220E+02
2095 2.306E+00 6.432E+02 4.322E-02 2.161E+03 3.239E+06 2.176E+02
2096 2.260E+00 6.305E+02 4.236E-02 2.118E+03 3.175E+06 2.133E+02
2097 2.215E+00 6.180E+02 4.152E-02 2.076E+03 3.112E+06 2.091E+02
2098 2.171E+00 6.058E+02 4.070E-02 2.035E+03 3.050E+06 2.049E+02
2099 2.128E+00 5.938E+02 3.990E-02 1.995E+03 2.990E+06 2.009E+02
2100 2.086E+00 5.820E+02 3.911E-02 1.955E+03 2.931E+06 1.969E+02
Year NMOC Methane
REPORT - 10
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results (Continued)
Year
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
1960 0 0 0 0 0 0
1961 2.100E+01 1.147E+04 7.710E-01 2.866E+01 2.295E+04 1.542E+00
1962 4.200E+01 2.294E+04 1.542E+00 5.730E+01 4.589E+04 3.083E+00
1963 6.516E+01 3.560E+04 2.392E+00 8.891E+01 7.119E+04 4.783E+00
1964 9.053E+01 4.946E+04 3.323E+00 1.235E+02 9.892E+04 6.646E+00
1965 1.181E+02 6.455E+04 4.337E+00 1.612E+02 1.291E+05 8.674E+00
1966 1.480E+02 8.088E+04 5.434E+00 2.020E+02 1.618E+05 1.087E+01
1967 1.814E+02 9.912E+04 6.660E+00 2.476E+02 1.982E+05 1.332E+01
1968 2.184E+02 1.193E+05 8.015E+00 2.979E+02 2.386E+05 1.603E+01
1969 2.589E+02 1.414E+05 9.502E+00 3.532E+02 2.828E+05 1.900E+01
1970 3.030E+02 1.655E+05 1.112E+01 4.135E+02 3.311E+05 2.225E+01
1971 3.509E+02 1.917E+05 1.288E+01 4.788E+02 3.834E+05 2.576E+01
1972 4.027E+02 2.200E+05 1.478E+01 5.495E+02 4.400E+05 2.956E+01
1973 4.586E+02 2.505E+05 1.683E+01 6.257E+02 5.010E+05 3.366E+01
1974 5.186E+02 2.833E+05 1.903E+01 7.075E+02 5.666E+05 3.807E+01
1975 5.827E+02 3.183E+05 2.139E+01 7.951E+02 6.367E+05 4.278E+01
1976 7.377E+02 4.030E+05 2.708E+01 1.007E+03 8.060E+05 5.416E+01
1977 9.018E+02 4.927E+05 3.310E+01 1.230E+03 9.853E+05 6.620E+01
1978 1.075E+03 5.873E+05 3.946E+01 1.467E+03 1.175E+06 7.893E+01
1979 1.258E+03 6.871E+05 4.617E+01 1.716E+03 1.374E+06 9.234E+01
1980 1.450E+03 7.921E+05 5.322E+01 1.978E+03 1.584E+06 1.064E+02
1981 1.652E+03 9.024E+05 6.063E+01 2.254E+03 1.805E+06 1.213E+02
1982 1.865E+03 1.019E+06 6.844E+01 2.544E+03 2.037E+06 1.369E+02
1983 2.089E+03 1.141E+06 7.667E+01 2.850E+03 2.282E+06 1.533E+02
1984 2.324E+03 1.270E+06 8.532E+01 3.171E+03 2.540E+06 1.706E+02
1985 2.572E+03 1.405E+06 9.439E+01 3.509E+03 2.810E+06 1.888E+02
1986 2.831E+03 1.546E+06 1.039E+02 3.862E+03 3.093E+06 2.078E+02
1987 3.102E+03 1.695E+06 1.139E+02 4.232E+03 3.389E+06 2.277E+02
1988 3.385E+03 1.849E+06 1.243E+02 4.619E+03 3.699E+06 2.485E+02
1989 3.680E+03 2.010E+06 1.351E+02 5.021E+03 4.021E+06 2.702E+02
1990 3.988E+03 2.179E+06 1.464E+02 5.441E+03 4.357E+06 2.928E+02
1991 4.309E+03 2.354E+06 1.582E+02 5.880E+03 4.708E+06 3.163E+02
1992 4.644E+03 2.537E+06 1.705E+02 6.337E+03 5.074E+06 3.409E+02
1993 4.986E+03 2.724E+06 1.830E+02 6.803E+03 5.447E+06 3.660E+02
1994 5.323E+03 2.908E+06 1.954E+02 7.264E+03 5.816E+06 3.908E+02
1995 5.647E+03 3.085E+06 2.073E+02 7.706E+03 6.170E+06 4.146E+02
1996 6.011E+03 3.284E+06 2.206E+02 8.202E+03 6.568E+06 4.413E+02
1997 6.387E+03 3.489E+06 2.344E+02 8.715E+03 6.979E+06 4.689E+02
1998 6.792E+03 3.711E+06 2.493E+02 9.268E+03 7.421E+06 4.986E+02
1999 7.217E+03 3.943E+06 2.649E+02 9.847E+03 7.885E+06 5.298E+02
2000 7.602E+03 4.153E+06 2.791E+02 1.037E+04 8.306E+06 5.581E+02
2001 8.152E+03 4.454E+06 2.992E+02 1.112E+04 8.907E+06 5.985E+02
2002 8.600E+03 4.698E+06 3.157E+02 1.173E+04 9.397E+06 6.314E+02
2003 8.978E+03 4.905E+06 3.295E+02 1.225E+04 9.809E+06 6.591E+02
2004 9.412E+03 5.142E+06 3.455E+02 1.284E+04 1.028E+07 6.910E+02
2005 9.808E+03 5.358E+06 3.600E+02 1.338E+04 1.072E+07 7.200E+02
2006 1.022E+04 5.582E+06 3.751E+02 1.394E+04 1.116E+07 7.501E+02
2007 1.066E+04 5.824E+06 3.913E+02 1.455E+04 1.165E+07 7.826E+02
2008 1.105E+04 6.035E+06 4.055E+02 1.507E+04 1.207E+07 8.110E+02
2009 1.142E+04 6.241E+06 4.193E+02 1.559E+04 1.248E+07 8.387E+02
Carbon dioxide Total landfill gas
REPORT - 11
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results (Continued)
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
2010 1.173E+04 6.408E+06 4.306E+02 1.601E+04 1.282E+07 8.611E+02
2011 1.202E+04 6.566E+06 4.411E+02 1.640E+04 1.313E+07 8.823E+02
2012 1.236E+04 6.751E+06 4.536E+02 1.686E+04 1.350E+07 9.072E+02
2013 1.267E+04 6.921E+06 4.650E+02 1.729E+04 1.384E+07 9.301E+02
2014 1.302E+04 7.115E+06 4.781E+02 1.777E+04 1.423E+07 9.562E+02
2015 1.334E+04 7.286E+06 4.896E+02 1.820E+04 1.457E+07 9.791E+02
2016 1.374E+04 7.508E+06 5.044E+02 1.875E+04 1.502E+07 1.009E+03
2017 1.415E+04 7.729E+06 5.193E+02 1.930E+04 1.546E+07 1.039E+03
2018 1.456E+04 7.956E+06 5.345E+02 1.987E+04 1.591E+07 1.069E+03
2019 1.452E+04 7.933E+06 5.330E+02 1.981E+04 1.587E+07 1.066E+03
2020 1.465E+04 8.005E+06 5.378E+02 1.999E+04 1.601E+07 1.076E+03
2021 1.482E+04 8.096E+06 5.440E+02 2.022E+04 1.619E+07 1.088E+03
2022 1.490E+04 8.138E+06 5.468E+02 2.032E+04 1.628E+07 1.094E+03
2023 1.501E+04 8.200E+06 5.510E+02 2.048E+04 1.640E+07 1.102E+03
2024 1.514E+04 8.271E+06 5.557E+02 2.066E+04 1.654E+07 1.111E+03
2025 1.528E+04 8.350E+06 5.610E+02 2.085E+04 1.670E+07 1.122E+03
2026 1.544E+04 8.436E+06 5.668E+02 2.107E+04 1.687E+07 1.134E+03
2027 1.562E+04 8.531E+06 5.732E+02 2.131E+04 1.706E+07 1.146E+03
2028 1.581E+04 8.635E+06 5.802E+02 2.157E+04 1.727E+07 1.160E+03
2029 1.599E+04 8.737E+06 5.870E+02 2.182E+04 1.747E+07 1.174E+03
2030 1.617E+04 8.836E+06 5.937E+02 2.207E+04 1.767E+07 1.187E+03
2031 1.635E+04 8.934E+06 6.003E+02 2.231E+04 1.787E+07 1.201E+03
2032 1.653E+04 9.030E+06 6.067E+02 2.255E+04 1.806E+07 1.213E+03
2033 1.670E+04 9.124E+06 6.130E+02 2.279E+04 1.825E+07 1.226E+03
2034 1.687E+04 9.215E+06 6.192E+02 2.302E+04 1.843E+07 1.238E+03
2035 1.703E+04 9.306E+06 6.252E+02 2.324E+04 1.861E+07 1.250E+03
2036 1.720E+04 9.394E+06 6.312E+02 2.346E+04 1.879E+07 1.262E+03
2037 1.735E+04 9.481E+06 6.370E+02 2.368E+04 1.896E+07 1.274E+03
2038 1.751E+04 9.565E+06 6.427E+02 2.389E+04 1.913E+07 1.285E+03
2039 1.766E+04 9.649E+06 6.483E+02 2.410E+04 1.930E+07 1.297E+03
2040 1.781E+04 9.730E+06 6.538E+02 2.430E+04 1.946E+07 1.308E+03
2041 1.746E+04 9.538E+06 6.408E+02 2.382E+04 1.908E+07 1.282E+03
2042 1.711E+04 9.349E+06 6.281E+02 2.335E+04 1.870E+07 1.256E+03
2043 1.677E+04 9.164E+06 6.157E+02 2.289E+04 1.833E+07 1.231E+03
2044 1.644E+04 8.982E+06 6.035E+02 2.243E+04 1.796E+07 1.207E+03
2045 1.612E+04 8.804E+06 5.916E+02 2.199E+04 1.761E+07 1.183E+03
2046 1.580E+04 8.630E+06 5.798E+02 2.155E+04 1.726E+07 1.160E+03
2047 1.548E+04 8.459E+06 5.684E+02 2.113E+04 1.692E+07 1.137E+03
2048 1.518E+04 8.292E+06 5.571E+02 2.071E+04 1.658E+07 1.114E+03
2049 1.488E+04 8.127E+06 5.461E+02 2.030E+04 1.625E+07 1.092E+03
2050 1.458E+04 7.966E+06 5.353E+02 1.990E+04 1.593E+07 1.071E+03
2051 1.429E+04 7.809E+06 5.247E+02 1.950E+04 1.562E+07 1.049E+03
2052 1.401E+04 7.654E+06 5.143E+02 1.912E+04 1.531E+07 1.029E+03
2053 1.373E+04 7.502E+06 5.041E+02 1.874E+04 1.500E+07 1.008E+03
2054 1.346E+04 7.354E+06 4.941E+02 1.837E+04 1.471E+07 9.882E+02
2055 1.319E+04 7.208E+06 4.843E+02 1.800E+04 1.442E+07 9.687E+02
2056 1.293E+04 7.066E+06 4.747E+02 1.765E+04 1.413E+07 9.495E+02
2057 1.268E+04 6.926E+06 4.653E+02 1.730E+04 1.385E+07 9.307E+02
2058 1.243E+04 6.789E+06 4.561E+02 1.696E+04 1.358E+07 9.122E+02
2059 1.218E+04 6.654E+06 4.471E+02 1.662E+04 1.331E+07 8.942E+02
2060 1.194E+04 6.522E+06 4.382E+02 1.629E+04 1.304E+07 8.765E+02
Carbon dioxideYear Total landfill gas
REPORT - 12
App D Logan LF landgem-v303 Tier 2 NMOC 2023 11/9/2023
Results (Continued)
(Mg/year)(m 3 /year)(av ft^3/min)(Mg/year)(m 3 /year)(av ft^3/min)
2061 1.170E+04 6.393E+06 4.296E+02 1.597E+04 1.279E+07 8.591E+02
2062 1.147E+04 6.267E+06 4.211E+02 1.565E+04 1.253E+07 8.421E+02
2063 1.124E+04 6.143E+06 4.127E+02 1.534E+04 1.229E+07 8.254E+02
2064 1.102E+04 6.021E+06 4.045E+02 1.504E+04 1.204E+07 8.091E+02
2065 1.080E+04 5.902E+06 3.965E+02 1.474E+04 1.180E+07 7.931E+02
2066 1.059E+04 5.785E+06 3.887E+02 1.445E+04 1.157E+07 7.774E+02
2067 1.038E+04 5.670E+06 3.810E+02 1.416E+04 1.134E+07 7.620E+02
2068 1.017E+04 5.558E+06 3.734E+02 1.388E+04 1.112E+07 7.469E+02
2069 9.972E+03 5.448E+06 3.660E+02 1.361E+04 1.090E+07 7.321E+02
2070 9.775E+03 5.340E+06 3.588E+02 1.334E+04 1.068E+07 7.176E+02
2071 9.581E+03 5.234E+06 3.517E+02 1.307E+04 1.047E+07 7.034E+02
2072 9.392E+03 5.131E+06 3.447E+02 1.281E+04 1.026E+07 6.895E+02
2073 9.206E+03 5.029E+06 3.379E+02 1.256E+04 1.006E+07 6.758E+02
2074 9.023E+03 4.929E+06 3.312E+02 1.231E+04 9.859E+06 6.624E+02
2075 8.845E+03 4.832E+06 3.247E+02 1.207E+04 9.664E+06 6.493E+02
2076 8.670E+03 4.736E+06 3.182E+02 1.183E+04 9.472E+06 6.364E+02
2077 8.498E+03 4.642E+06 3.119E+02 1.160E+04 9.285E+06 6.238E+02
2078 8.330E+03 4.550E+06 3.057E+02 1.137E+04 9.101E+06 6.115E+02
2079 8.165E+03 4.460E+06 2.997E+02 1.114E+04 8.921E+06 5.994E+02
2080 8.003E+03 4.372E+06 2.938E+02 1.092E+04 8.744E+06 5.875E+02
2081 7.845E+03 4.285E+06 2.879E+02 1.070E+04 8.571E+06 5.759E+02
2082 7.689E+03 4.201E+06 2.822E+02 1.049E+04 8.401E+06 5.645E+02
2083 7.537E+03 4.117E+06 2.767E+02 1.028E+04 8.235E+06 5.533E+02
2084 7.388E+03 4.036E+06 2.712E+02 1.008E+04 8.072E+06 5.423E+02
2085 7.241E+03 3.956E+06 2.658E+02 9.881E+03 7.912E+06 5.316E+02
2086 7.098E+03 3.878E+06 2.605E+02 9.685E+03 7.755E+06 5.211E+02
2087 6.958E+03 3.801E+06 2.554E+02 9.493E+03 7.602E+06 5.108E+02
2088 6.820E+03 3.726E+06 2.503E+02 9.305E+03 7.451E+06 5.006E+02
2089 6.685E+03 3.652E+06 2.454E+02 9.121E+03 7.304E+06 4.907E+02
2090 6.552E+03 3.580E+06 2.405E+02 8.940E+03 7.159E+06 4.810E+02
2091 6.423E+03 3.509E+06 2.357E+02 8.763E+03 7.017E+06 4.715E+02
2092 6.295E+03 3.439E+06 2.311E+02 8.590E+03 6.878E+06 4.622E+02
2093 6.171E+03 3.371E+06 2.265E+02 8.420E+03 6.742E+06 4.530E+02
2094 6.049E+03 3.304E+06 2.220E+02 8.253E+03 6.609E+06 4.440E+02
2095 5.929E+03 3.239E+06 2.176E+02 8.090E+03 6.478E+06 4.352E+02
2096 5.811E+03 3.175E+06 2.133E+02 7.929E+03 6.350E+06 4.266E+02
2097 5.696E+03 3.112E+06 2.091E+02 7.772E+03 6.224E+06 4.182E+02
2098 5.584E+03 3.050E+06 2.049E+02 7.619E+03 6.101E+06 4.099E+02
2099 5.473E+03 2.990E+06 2.009E+02 7.468E+03 5.980E+06 4.018E+02
2100 5.365E+03 2.931E+06 1.969E+02 7.320E+03 5.861E+06 3.938E+02
Total landfill gasYearCarbon dioxide
REPORT - 13
APPENDIX D: POTENTIAL EMISSIONS
LOGAN CITY LANDFILL
TABLE D-1 - PAVED ROAD SECTION
Tonnage on this road section
80,000 tpy
300 tpd
40 average tph
Road Section Name Paved Rd.
Road Section Length 1,400 feet
ANNUAL and HOURLY VMT
Waste Empty/Loaded 2 9.44 3.19 12.63 11.04 80,000 40 11.04 25,078.4 12.5 2,000 0.38 9,499.4 4.7
PM10 Emissions (tons/yr)
PM10 Emissions (lbs/hr)
PM2.5 Emissions (tons/yr)
PM2.5 Emissions (lbs/hr)
0.73 0.07
Controlled PM2.5 Emissions from this
section of road (tpy) (12)
Uncontrolled PM2.5 Emissions from this
section of road (tpy) (10)
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/yr) (8b)
0.15
a, constant for PM10 and PM2.5 on industrial roads (Source:
AP-42 Table 13.2.2-2)
b, constant for PM10 and PM2.5 on industrial roads (Source:
AP-42 Table 13.2.2-2)
0.9
0.45
9,499.4
0.15 4.7 0.73 0.07
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/hr) (8b)
Uncontrolled PM2.5 Emissions from this
section of road (lbs/hr) (11)
Controlled PM2.5 Emissions from this
section of road (lbs/hr) (12)
1.53 4.7 7.27 0.73
Uncontrolled PM10 Emissions from this
section of road (tpy) (10)
Controlled PM10 Emissions from this
section of road (tpy) (12)
0.73
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/hr) (8b)
Uncontrolled PM10 Emissions from this
section of road (lbs/hr) (11)
Controlled PM10 Emissions from this
section of road (lbs/hr) (12)
1.53 9,499.4 7.27
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/yr) (8b)
s, surface material silt content, (%) (Source: AP-42 Chapter
13.2.2)6.4
w, mean weigth (tons) of the vehicles traveling the road 11.04
k, Particle size mulitplier for particle size range (PM10),
(lb/VMT) (Source: AP-42 Table 13.2.2-2)1.5
k, Particle size mulitplier for particle size range (PM2.5),
(lb/VMT) (Source: AP-42 Table 13.2.2-2)0.15
Equation Parameter Value
E, annual size-specific emission factor for PM10 (unpaved
industrial roads) extrapolated for natural mitigation (9)see table to right
VMT per
hour (8a)
miles
Weighted average used
for calculating emission
factor (5b), W =
11.04
Total vehicle miles
traveled (VMT) on this
road section (8b)
9,499.4 4.7
Trips per
year (6)
Trips per
hour (6)
Distance per trip (7)
feet miles
VMT per
year (8a)
milestons/yr average
tons/hr
Load in-Loadout (4)
Weighted
Average
Weight (5a)
tons
Average
Load Weight
(2a)
tons
Loaded
Vehicle
Weight (2b)
tons
Average
Weight (3)
tons
Average Empty
Vehicle Weight
(1)
tons
Waste
Haul Product Type
Truck Load
Description
(Empty, Loaded,
Empty/Loaded)
Direction of
Traffic
1 = one-way
2 = two-way
NOTES:
1. Weighted average of the tare weights of the individual trucks used
2a. Weighted average of recorded bin/load weights
2b. Loaded Vehicle Weight = Empty Vehicle Weight + Load Weight
3. For 1-way traffic, Average Weight of Vehicle = Empty Vehicle Weight OR Loaded Vehicle Weight, depending on if the vehicle is empty or loaded
###
Example Calculations for: Waste
9.44 tons
3.19 tons
12.63 tons
### 11.04 tons
4. Load in-Loadout = material tonnage/year or material tonnage/hour
Example Calculations for: Waste
45,000 tons/year
5a.Weighted Average Weight of a vehicle = (average weight of the vehicle)*(load in-loadout on the vehicle, in tons) / (total load in -loadout by all vehicles on this section of road)
5b. Sum total of weighted averages of individual vehicle types
6. Trips per hour = (Load in-Loadout tonnage per hour) / Load Weight
Trips per year = (Load in-Loadout tonnage per year) / Load Weight
Example Calculations for: Waste
45,000 tons/year
3.19 tons/trip
14,106.6 trips/year
7.Distance per trip obtained from the site map and known operational conditions at facility. See site map for location of this section of road.2000
8a. Vehicle Miles Traveled (VMT) per year = (trips per year)*(distance per trip)
Vehicle Miles Traveled (VMT) per hour = (trips per hour)*(distance per trip)
8b. Sum total of VMT on this section of road, VMT/yr
Sum total of VMT on this section of road, VMT/hr
9. Emission Factor Source: AP-42 5th Ed., Section 13.2.2, Equations 1a and 2, Unpaved Roads, Ev.: November 2006
10. Emissions (tons/yr) = Emission factor (lb/VMT)*(VMT/year)*(1/2000 ton/lbs)
Example Calculations for: Uncontrolled PM10 emissions (in tons per year ) from this section of road
Based on Equation listed in Table Note (9):
1.53 lb/MVT
From Table Note (8b):
2858.7 VMT/year
2.19 tons/year
11. Emissions (lbs/hr) = Emission factor (lb/VMT)*(VMT/hr)
Example Calculations for: Uncontrolled PM2.5 emissions (in tons per hour ) from this section of road
Based on Equation listed in Table Note (9):
0.15 lb/MVT
From Table Note (8b):
1.9 VMT/hr
0.22 tons/hr
12. Control Efficiency = 90% Source: 2008 UDAQ Haul Road Policy. Control Efficiency for 'pave road surface with sweeping and watering.
45000/3.19 =
(Empty Vehicle Weight + Loaded Vehicle Weight) / 2 =
Empty Vehicle Weight + Vehicle Load =
Empty Vehicle Weight =
Vehicle Load =
Loaded Vehicle Weight =
Average Weight of vehicle =
Annual tonnage of material hauled =
Annual tonnage of material hauled =
Load weight =
Annual load in-loadout tonnage =
Hourly Emissions of PM2.5 from this section of road = (0.15*1.9)/2000 =
Vehicle Miles Travled (VMT) per year =
[1.5*(6.4/12)^0.9*(11.04/3)^0.45] =Emission Factor for PM10 =
Annual Emissions of PM10 from this section of road = (1.53*2858.7)/2000 =
Emission Factor for PM2.5 = [0.15*(6.4/12)^0.9*(11.04/3)^0.45] =
Vehicle Miles Travled (VMT) per hour =
APPENDIX D: POTENTIAL EMISSIONS
LOGAN CITY LANDFILL
TABLE D-2 - UNPAVED ROAD SECTION
Tonnage on this road section
80,000 tpy
300 tpd
40 average tph
Road Section Name Paved Rd.
Road Section Length 1,400 feet
ANNUAL and HOURLY VMT
Waste Empty/Loaded 2 9.44 3.19 12.63 11.04 80,000 40 11.04 25,078.4 12.5 2,000 0.38 9,499.4 4.7
PM10 Emissions (tons/yr)
PM10 Emissions (lbs/hr)
PM2.5 Emissions (tons/yr)
PM2.5 Emissions (lbs/hr)
Vehiclae miles travelled
(VMT/yr) (8b)
Uncontrolled PM2.5 Emissions from this
section of road (tpy) (10)
Controlled PM2.5 Emissions from this
section of road (tpy) (12)
4.7
0.15 4.7 0.73 0.18
0.15 9,499.4 0.73 0.18
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/hr) (8b)
Uncontrolled PM2.5 Emissions from this
section of road (lbs/hr) (11)
Controlled PM2.5 Emissions from this
section of road (lbs/hr) (12)
a, constant for PM10 and PM2.5 on industrial roads (Source:
AP-42 Table 13.2.2-2)0.9
b, constant for PM10 and PM2.5 on industrial roads (Source:
AP-42 Table 13.2.2-2)0.45 Emission Factor (lb/MVT)
(9)
Controlled PM10 Emissions from this
section of road (lbs/hr) (12)s, surface material silt content, (%) (Source: AP-42 Chapter
13.2.2)6.4
w, mean weigth (tons) of the vehicles traveling the road 11.04 1.53 7.27 1.82
k, Particle size mulitplier for particle size range (PM2.5),
(lb/VMT) (Source: AP-42 Table 13.2.2-2)0.15
Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/hr) (8b)
Uncontrolled PM10 Emissions from this
section of road (lbs/hr) (11)
Controlled PM10 Emissions from this
section of road (tpy) (12)E, annual size-specific emission factor for PM10 (unpaved
industrial roads) extrapolated for natural mitigation (9)see table to right
1.53 9,499.4
Equation Parameter Value Emission Factor (lb/MVT)
(9)
Vehiclae miles travelled
(VMT/yr) (8b)
Uncontrolled PM10 Emissions from this
section of road (tpy) (10)
7.27 1.82k, Particle size mulitplier for particle size range (PM10),
(lb/VMT) (Source: AP-42 Table 13.2.2-2)1.5
feet miles miles miles
Weighted average used
for calculating emission
factor (5b), W =
11.04
Total vehicle miles
traveled (VMT) on this
road section (8b)
9,499.4 4.7
tons
Distance per trip (7)VMT per
year (8a)
VMT per
hour (8a)
1 = one-way
2 = two-way tons tons tons tons tons/yr
average
tons/hr
Loaded
Vehicle
Weight (2b)
Average
Weight (3)Load in-Loadout (4)
Weighted
Average
Weight (5a)Trips per
year (6)
Trips per
hour (6)
Average
Load Weight
(2a)
Waste
Haul Product Type
Truck Load
Description
(Empty, Loaded,
Empty/Loaded)
Direction of
Traffic
Average Empty
Vehicle Weight
(1)
NOTES:
1. Weighted average of the tare weights of the individual trucks used
2a. Weighted average of recorded bin/load weights
2b. Loaded Vehicle Weight = Empty Vehicle Weight + Load Weight
3. For 1-way traffic, Average Weight of Vehicle = Empty Vehicle Weight OR Loaded Vehicle Weight, depending on if the vehicle is empty or loaded
###
Example Calculations for: Waste
9.44 tons
3.19 tons
12.63 tons
### 11.04 tons
4. Load in-Loadout = material tonnage/year or material tonnage/hour
Example Calculations for: Waste
45,000 tons/year
5a. Weighted Average Weight of a vehicle = (average weight of the vehicle)*(load in-loadout on the vehicle, in tons) / (total load in -loadout by all vehicles on this section of road)
5b. Sum total of weighted averages of individual vehicle types
6. Trips per hour = (Load in-Loadout tonnage per hour) / Load Weight
Trips per year = (Load in-Loadout tonnage per year) / Load Weight
Example Calculations for: Waste
45,000 tons/year
3.19 tons/trip
14,106.6 trips/year
7.Distance per trip obtained from the site map and known operational conditions at facility. See site map for location of this section of road.2000
8a. Vehicle Miles Traveled (VMT) per year = (trips per year)*(distance per trip)
Vehicle Miles Traveled (VMT) per hour = (trips per hour)*(distance per trip)
8b. Sum total of VMT on this section of road, VMT/yr
Sum total of VMT on this section of road, VMT/hr
9. Emission Factor Source: AP-42 5th Ed., Section 13.2.2, Equations 1a and 2, Unpaved Roads, Ev.: November 2006
10. Emissions (tons/yr) = Emission factor (lb/VMT)*(VMT/year)*(1/2000 ton/lbs)
Example Calculations for: Uncontrolled PM10 emissions (in tons per year ) from this section of road
Based on Equation listed in Table Note (9):
1.53 lb/MVT
From Table Note (8b):
2858.7 VMT/year
2.19 tons/year
11. Emissions (lbs/hr) = Emission factor (lb/VMT)*(VMT/hr)
Example Calculations for: Uncontrolled PM2.5 emissions (in tons per hour ) from this section of road
Based on Equation listed in Table Note (9):
0.15 lb/MVT
From Table Note (8b):
1.9 VMT/hr
0.22 tons/hr
12. Control Efficiency = 90% Source: 2008 UDAQ Haul Road Policy. Control Efficiency for 'pave road surface with sweeping and watering.
Empty Vehicle Weight =
Vehicle Load =
Loaded Vehicle Weight = Empty Vehicle Weight + Vehicle Load =
Average Weight of vehicle = (Empty Vehicle Weight + Loaded Vehicle Weight) / 2 =
Annual tonnage of material hauled =
Annual tonnage of material hauled =
Load weight =
Annual load in-loadout tonnage = 45000/3.19 =
Vehicle Miles Travled (VMT) per hour =
Hourly Emissions of PM2.5 from this section of road = (0.15*1.9)/2000 =
[1.5*(6.4/12)^0.9*(11.04/3)^0.45] =
Vehicle Miles Travled (VMT) per year =
Annual Emissions of PM10 from this section of road = (1.53*2858.7)/2000 =
Emission Factor for PM2.5 = [0.15*(6.4/12)^0.9*(11.04/3)^0.45] =
Emission Factor for PM10 =
APPENDIX D: POTENTIAL EMISSIONS
LOGAN CITY LANDFILL
TABLE D-3 - Roads Summary
PM10 PM2.5 PM10 PM2.5
ft.lb/hr lb/hr tons/yr tons/yr
Paved Section 1,070 0.73 0.07 0.73 0.07
Unpaved Section 3,450 1.82 0.18 1.82 0.18
2.54 0.25 2.54 0.25
ANNUAL CONTROLLED EMISSIONS
Haul
Roads
Total Emissions
HOURLY CONTROLLED EMISSIONS
80000 Name of Road Section
Road Section
Length
March 21, 2024
APPENDIX E
INSIGNIFICANT EMISSION UNITS
Insignificant equipment at the Landfill, as defined in UAC R307-415-5e, consists of the following
units, detailed in Table E-1:

Table E-1
Insignificant Landfill Equipment
Equipment Type Stationary / Mobile
Propane-fired infrared tube heater Stationary
500-gallon propane AST Stationary
500-gallon used oil AST Stationary
2000-gallon used oil AST Stationary
4000-gallon diesel fuel above ground storage tank (AST) Stationary

March 21, 2024
APPENDIX F
AIR POLLUTION CONTROL EQUIPMENT
No pollution control equipment is located at the landfill for landfill gas emission. Logan City
complies with the Utah Administrative Code (UAC) R307-250 Emission Standards: Fugitive
Emissions and Fugitive Dust. Water spray is applied to haul roads as need to control fugitive
dust.

March 21, 2024
APPENDIX G
COMPLIANCE MONITORING ACTIVITIES
Landfill compliance monitoring includes the following:

Opacity Monitoring
In accordance with UAC R307-309-5, General Requirements for Fugitive Dust opacity caused by
fugitive dust shall not exceed 10 percent at the property boundary and 20 percent at the
Landfill. Visual opacity surveys are conducted quarterly using EPA Method 9.

Landfill Gas Testing
Tier 2 landfill gas testing will be performed by EPA Method 25C will continue to be conducted at
least once every five years. The most recent test was completed November 2023, the results
are included in Appendix D

March 21, 2024
APPENDIX H
APPLICABLE REQUIREMENTS
The Logan City Sanitary Landfill is subject provisions of 40 CFR Part 60, Subpart WWW –
Standards of Performance for Municipal Solid Waste Landfills. The facility is currently in
compliance with the requirements of the NSPS. Logan City preformed Tier 2 NMOC testing
using EPA Methods 3C and 25C. The results were submitted to the Utah Division of Air Quality
and the report is included in Appendix D. The results show that NMOC emissions are not
expected to exceed 34 Mg/yr NMOC during the operational life of the landfill and post closure.
The following UAC rules apply to the Landfill; R307-221 Emission Standards: Emission Controls
for Existing Municipal Solid Waste Landfills, R307-150 Emission Inventories, R307-202 Emission
Standards: General Burning, R307-309 Nonattainment and Maintenance Areas for PM10 and
PM2.5: Fugitive Emissions and Fugitive Dust.

March 21, 2024
APPENDIX I
PROPOSED EXEMPTIONS FROM REQUIREMENTS
At this time there are no proposed exemptions from the applicable requirements for the Logan
City Sanitary Landfill.

March 21, 2024
APPENDIX J
EMISSIONS TRADING
As of the date of this Renewal Application, the Logan City Landfill is not involved with emission
trading at this time. There is no foreseeable need for emissions trading in the future.

March 21, 2024
APPENDIX K
COMPLIANCE PLAN AND SCHEDULE
The Logan City Landfill is currently in compliance with all applicable requirements. Additionally,
the Landfill has remained in compliance with the terms of it Title V Operating Permit, Permit
number 500103003 throughout the permitted time period (2014 – present).
The Landfill will continue to comply with all applicable requirements of the Title V Operating
Permit, and UAC R307.
The Landfill will comply, on a timely basis, with any applicable requirement that becomes
effective during the term of the permit.