SIP REVISION - WASTE MANAGEMENT.PDF

Maricopa County — Formal (2022-06-22)

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REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
[Month Year] 
Maricopa County Air Quality Department
Phone: 602-506-6010
Fax: 602-506-6179
Maricopa.gov/AQ
CleanAirMakeMore.com
301 West Jefferson Street | Suite 410 | Phoenix, AZ 85003
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TABLE OF CONTENTS 
SECTION 1: INTRODUCTION 
1.1 
Purpose 
1.2 
Regulatory Background 
SECTION 2: COMPLETENESS CRITERIA 
2.1 
Administrative Materials 
2.2 
Technical Support 
APPENDICES 
Appendix 1: 
Waste Management Permit Conditions 
Appendix 2: 
Waste Management Emission Reduction Credit Certification Packages 
Appendix 3: 
EPA Letter dated August 18, 2021 
Appendix 4: 
Notice of Public Hearing 
Appendix 5: 
Board of Supervisors’ Approval  
Appendix 6: 
Relevant Arizona Revised Statutes 
Appendix 7: 
Compilation of Public Comments 
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REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
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SECTION 1: INTRODUCTION
1.1 
Purpose:
This SIP revision is being submitted to the U.S. Environmental Protection Agency (EPA) 
for incorporation of permit conditions from three Waste Management of Arizona, Inc. 
(Waste Management) permits into the Arizona SIP. Specifically, the Maricopa County Air 
Quality Department (MCAQD) is requesting the EPA approve the following permit 
conditions into the Arizona SIP: 

Conditions 37-46 of Maricopa County Air Quality Permit P0008308

Conditions 33-42 of Maricopa County Air Quality Permit P0008309

Conditions 37-46 of Maricopa County Air Quality Permit P0008316
The permit conditions above are included in Appendix 1 of this submittal. 
1.2 
Regulatory Background: 
Waste Management recently replaced 225 diesel-fueled solid waste collection trucks with 225 
compressed natural gas (CNG) fueled trucks reducing emissions of NOx from four 
collection fleets. The four collection fleets are based at three transfer stations within the 
Maricopa County ozone nonattainment area. Each transfer station is permitted by MCAQD. 
On July 8, 2021, Waste Management submitted an emission reduction credit (ERC) 
application to MCAQD to certify the emission reductions for use as emission offsets. 
MCAQD representatives reviewed the ERC application to determine if the emission 
reductions qualified as permanent, quantifiable, surplus, enforceable, and real as required by 
40 CFR 51.165(a)(3)(ii)(A) through (D) and 40 CFR 51.165(a)(3)(ii)(G). MCAQD 
representatives determined the emission reductions qualified as quantifiable, surplus, and 
real and could qualify as permanent and enforceable with revisions to the three transfer 
station air quality permits associated with the four collection fleets. 
In August of 2021, MCAQD revised Waste Management permits P0008308, P0008309, and 
P0008316 to include permit conditions to make the emission reductions permanent and 
enforceable. The permits were revised to include a condition that the replaced diesel-fueled 
trucks be either permanently disabled or permanently removed from the nonattainment area 
and a condition that future replacement trucks of the CNG trucks be only with trucks 
certified to a NOx emission limit equivalent to or less than the CNG trucks. In addition, the 
permits were revised to include monitoring and recordkeeping requirements to make the 
reductions enforceable. 
After MCAQD revised the Waste Management permits MCAQD certified 33.6 tons/year 
of emission reduction credits. The Waste Management Emission Reduction Certification 
Packages are included in Appendix 2. 
To further ensure the permanency of the Waste Management emission reductions the EPA 
directed the MCAQD to submit the Waste Management permit conditions related to the 
emission reduction credits for approval into the Arizona SIP. See the EPA letter included in 
Appendix 3 for further details. 
The Maricopa County Board of Supervisors approved submittal of the Waste Management 
permit conditions into the Arizona SIP on [date]. 
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SECTION 2: COMPLETENESS CRITERIA 
2.1 
Administrative Materials: 
2.1(a) A formal letter of submittal from the MCAQD Director or [his] designee, 
requesting the EPA approval of the SIP revision. 
See SIP submission cover letter from Philip A. McNeely, Director of MCAQD, 
included above. 
2.1(b) Evidence that MCAQD has adopted the SIP revision in the State code or 
body of regulations; or issued the permit, order, consent agreement in final 
form. 
The Maricopa County Board of Supervisors approved submittal of the permit 
conditions into the Arizona SIP on [date]. 
See Appendix 5 of this document. 
2.1(c) Evidence that MCAQD has the necessary legal authority under State law 
to adopt and implement the SIP revision. 
Arizona Revised Statutes (A.R.S.) §§ 49-112, 49-474, 49-479 and 49-480 authorize 
MCAQD to submit revisions to the SIP for approval. 
See Appendix 6 of this document. 
2.1(d) A copy of the actual regulations, or documents submitted for approval and 
incorporation by reference into the plan, including indication of the changes 
made to the existing approved plan, where applicable. 
See Appendix 1 of this document which includes the ERC permit conditions from 
MCAQD air quality permits P0008308, P0008309, and P0008316. 
2.1(e) Evidence that MCAQD followed all of the procedural requirements of the 
State’s laws and constitution in conducting and completing the 
adoption/issuance of the plan. 
MCAQD completed all of the following procedural requirements for obtaining 
approval of the SIP submittal: 
(1) 
Provided the public at least 30 days to comment on the draft SIP submittal 
(BOS Public Hearing Notice and Newspaper Affidavit); and
(2) 
Obtained approval to submit the permit conditions as a revision to the 
Arizona SIP from the Board of Supervisors (Certified Minutes of 
BOS Public Hearing [Date]). 
See Appendices 4 and 5 
2.1(f) Evidence that public notice was given of the proposed change consistent with 
procedures approved by the EPA, including the date of publication of such 
notice. 
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See Appendix 4 for evidence that MCAQD gave public notice of the proposed 
SIP submittal, including the date of publication of such notice. 
2.1(g) Certification that public hearing(s) were held in accordance with the 
information provided in the public notice and the State’s laws and 
constitution, if applicable and consistent with the public hearing 
requirements in 40 CFR 51.102. 
See Appendix 5. 
2.1(h) Compilation of public comments and the MCAQD’s response. 
Appendix 7 includes a compilation of public comments and MCAQD’s 
responses. 
2.2 
Technical Support: 
2.2(a) Identification of all regulated pollutant(s) affected by the plan. 
The regulated pollutant affected by this plan is NOx. 
2.2(b) Identification of the locations of affected sources including the EPA 
attainment/nonattainment designation of the locations and the status of the 
attainment plan for the affected area(s). 
The affected sources are mobile sources, solid waste collection trucks, traveling in 
the ozone nonattainment area. 
2.2(c) Quantification of the changes in plan allowable emissions from the affected 
sources; estimates of changes in current actual emissions from affected 
sources or, where appropriate, quantification of changes in actual emissions 
from affected sources through calculations of the differences between certain 
baseline levels and allowable emissions anticipated as a result of the revision. 
Waste Management’s replacement of 225 diesel-fueled solid waste collection trucks 
with 225 CNG fueled trucks reduced emissions of NOx by 33.6 tons/year. 
2.2(d) The MCAQD’s demonstration that the national ambient air quality standards, 
EPA attainment/nonattainment designations for all or parts of Maricopa County are:
1987 PM10 Standard: 
Serious Nonattainment (June 10, 1996)
2008 Ozone Standard: 
Moderate Nonattainment (May 4, 2016)
2015 Ozone Standard: 
Marginal Nonattainment (June 4, 2018)
1971 Carbon Monoxide Standard: 
Attainment (April 8, 2005)
2008 Lead Standard: 
 
Unclassified/Attainment (December 31, 2011)
2010 Nitrogen Oxides Standard: 
Unclassified/Attainment (January 31, 2012)
2010 Sulfur Dioxide Standard:  
Unclassified/Attainment (April 19, 2018)
2012 PM2.5 Standard:  
Unclassified/Attainment (April 15, 2015)
The status of attainment plans for Maricopa County are:
2012 Five Percent Plan: 
Approved (June 10, 2014)
2017 MAG Ozone Moderate Plan: 
Partial Approval/Partial Disapproval (June 2, 2020)
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prevention of significant deterioration increments, reasonable further progress 
demonstration, and visibility, as applicable, are protected if the plan is 
approved and implemented. 
The national ambient air quality standards, prevention of significant deterioration 
increments, reasonable further progress demonstration, and visibility are protected if 
the plan is approved because approval of the plan is ensuring the permanence of the 
Waste Management emission reductions.  
2.2(e) Modeling information required to support the proposed revision, including 
input data, output data, models used, justification of model selections, 
ambient monitoring data used, meteorological data used, justification for use 
of offsite data (where used), modes of models used, assumptions, and other 
information relevant to the determination of adequacy of the modeling 
analysis. 
Not applicable. 
2.2(f) Evidence, where necessary, that emission limitations are based on continuous 
emission reduction technology. 
Not applicable. 
2.2(g) Evidence that the plan contains emission limitations, work practice standards 
and recordkeeping/reporting requirements, where necessary, to ensure 
emission levels. 
See Appendix 1: Waste Management Permit Conditions 
2.2(h) Compliance/enforcement strategies, including how compliance will be 
determined in practice. 
The MCAQD will determine compliance by conducting periodic inspections and 
ensuring compliance with the permit conditions. Enforcement will be conducted per 
current department policies and procedures. 
2.2(i) Special economic and technological justifications required by any applicable 
EPA policies, or an explanation of why such justifications are not necessary. 
Not applicable. 
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REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 1: 
WASTE MANAGEMENT PERMIT CONDITIONS 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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MARICOPA COUNTY AIR QUALITY DEPARTMENT 
Permitting Division 
3800 N. Central Avenue, Suite 1400, Phoenix, Arizona 85012 
Phone: (602) 506-6010  
Fax: (602) 506-6985 
AIR QUALITY PERMIT TO OPERATE AND/OR CONSTRUCT 
(As required by Title 49, Chapter 3, Article 2, Section 49-480, Arizona Revised Statutes) 
ISSUED TO 
San Tan Transfer Station 
4040 S 80th St 
Mesa, AZ 85212 
This air quality permit to operate and/or construct does not relieve the applicant of the 
responsibility of meeting all air pollution regulations. 
THE PERMITTEE IS SUBJECT TO THE SPECIFIC AND GENERAL CONDITIONS IDENTIFIED IN THIS PERMIT. 
FACILITY NUMBER: 
F001645 
 
LEGACY PERMIT NUMBER:  
040027 
PERMIT NUMBER: 
P0008308 
 
REVISION DATE: 
08/25/2021 
EXPIRATION DATE: 
06/30/2024 
 
Todd Martin, Non-Title V Permit Supervisor 
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San Tan Transfer Station, Facility # F001645 
Permit # P0008308 
Revision Date: 08/25/2021 
[SIP Rule 220 §302.2] [Rule 204 §305.2.a] 
42. Monitoring of Equipment Use:
The Permittee shall monitor the use of all CNG-powered equipment used to generate ERCs to verify that the
equipment is operated in the same manner as was represented in the ERC application, specifically the
emission calculations using Motor Vehicle Emission Simulator (MOVES) software. This monitoring shall
include the follow, at minimum:
a.
Vehicle miles traveled (VMT) for each CNG-powered vehicle;
b.
Percent of VMT within the nonattainment area.
[SIP Rule 220 §302.2] [Rule 204 §305.2.b] 
43. Removal/Disposal of Replaced Equipment:
a.
The Permittee shall permanently remove any replaced diesel-powered equipment from the nonattainment 
area or render the replaced equipment permanently disabled and dispose of in a manner that complies
with all applicable local, state, and federal laws. For future CNG-powered equipment replacements, the
Permittee shall provide evidence of proper disposal upon request from the Control Officer or from the
permitted source using the ERCs as offsets. Evidence shall include at a minimum, serial numbers or
vehicle numbers if the vehicle number is linked in the Permittee’s records to the serial number, and
location of where or how the equipment was disposed or removed from the nonattainment area.
b.
The Permittee shall monitor the location and usage of CNG-powered vehicles that were used to create
ERCs and have been replaced but remain operational outside the ozone nonattainment area. Such
monitoring shall include the following, at minimum:
i.
Name and address of the current owner of the vehicle;
ii.
Documentation showing the current owner’s geographic coverage area;
iii.
Description of current vehicle usage including the following:
1)
Customer names;
2)
Pickup and delivery locations (address or equivalent).
[SIP Rule 220 §302.2] [Rule 204 §305.2.d] 
44. Inspections:
The Permittee shall allow the Control Officer access to the premises for conducting an inspection to
verify compliance with requirements applicable to ERCs and their continued achievement. An
inspection may include, but is not limited to, a review of records and reports.
[SIP Rule 220 §302.2] [Rule 204 §502] 
45. Recordkeeping:
a.
Records shall be maintained on site at all times by the Permittee in a consistent and complete manner, in
either electronic or paper format.
b.
Records shall be made available upon request and without delay to the owner or operator of the permitted 
source utilizing the ERCs and the Control Officer or his designee.
c.
Records shall be maintained for five (5) years beyond the use or retirement of the ERCs, or five years
after the retirement of a CNG-powered vehicle which was used to generate ERCs. The ERCs are to be
used as offsets for Intel Corporation, facility # F000701, permit # P0006742.
[SIP Rule 220 §302.2] [Rule 204 §501] 
d.
CNG-powered equipment: Records shall include a detailed inventory of all CNG-powered equipment
used to generate ERCs including all of the following for each piece of equipment:
i.
The equipment manufacturer.
ii.
The model number.
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San Tan Transfer Station, Facility # F001645 
Permit # P0008308 
Revision Date: 08/25/2021 
iii.
The model year.
iv.
A description of the equipment.
v.
Information on sources used to obtain family or test group, fuel capacities, and emission rates of
each CNG-powered vehicle when used to calculate ERCs.
vi.
The date each CNG-powered vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
vii. Any maintenance performed on a vehicle including the following, at minimum:
1)
A description of the maintenance;
2)
The date that the maintenance was performed;
3)
The effect of the maintenance on the continued achievement of the ERCs.
e.
Diesel-powered vehicle: Records shall include a detailed inventory of all diesel-powered vehicle used for
the same purpose as CNG-powered vehicle including all of the following for each vehicle:
i.
The vehicle manufacturer.
ii.
The model number.
iii.
The model year.
iv.
A description of the vehicle including serial number.
v.
Fuel type.
vi.
The date each vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
f.
Monthly review and, if necessary, update the vehicle inventory.
g.
Operational Records:
i.
Monthly: For each CNG-powered vehicle used to generate ERCs, the Permittee shall record a
description of all maintenance and repairs and at least one of the following to demonstrate the vehicle
is used in the same manner as was represented in the ERC application, most notably the calculations 
using Motor Vehicle Emission Simulator (MOVES) software:
1)
Hours of operation.
2)
Mileage accrued.
ii.
Monthly: For each piece of diesel-fueled vehicle that can be used for the same purpose as the CNG-
powered vehicle used to generate ERCs, the Permittee shall record a description of all maintenance
and repairs and at least one of the following:
1)
Hours of operation.
2)
Mileage accrued.
3)
Fuel consumed.
h.
Replacement of diesel vehicles:
For any diesel vehicle that is replaced with a higher emitting vehicle, the Permittee shall notify the
Department by the end of the month following the vehicle replacement so the Department can review
Permittee records to ensure the ERCs continue to meet applicable requirements.
[SIP Rule 220 §302.2][Rule 204 §505] 
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MARICOPA COUNTY AIR QUALITY DEPARTMENT 
Engineering and Permitting Division 
3800 N. Central Avenue, Suite 1400, Phoenix, Arizona 85012 
Phone: (602) 506-6010  
Fax: (602) 506-6985 
AIR QUALITY PERMIT TO OPERATE AND/OR CONSTRUCT 
(As required by Title 49, Chapter 3, Article 2, Section 49-480, Arizona Revised Statutes) 
ISSUED TO 
White Tanks Transfer Station 
18605 W McDowell Rd 
Goodyear, AZ 85338 
This air quality permit to operate and/or construct does not relieve the applicant of the 
responsibility of meeting all air pollution regulations. 
THE PERMITTEE IS SUBJECT TO THE SPECIFIC AND GENERAL CONDITIONS IDENTIFIED IN THIS PERMIT. 
FACILITY NUMBER: 
F001646 
 
LEGACY PERMIT NUMBER:  
040086 
PERMIT NUMBER: 
P0008309 
 
REVISION DATE: 
08/25/2021 
EXPIRATION DATE: 
10/31/2024 
 
Todd Martin, Non-Title V Permit Supervisor 
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White Tanks Transfer Station Facility# F001646 
Permit#: P0008309 
Revision Date: 08/25/2021 
[SIP Rule 220 §302.2] [Rule 204 §305.1.a] 
36. Quantification of Baseline Emissions and Emission Reductions:
a.
The Permittee’s documentation to quantify baseline emissions and emission reductions shall comply with
the methodology given in Rule 204 Appendix C and with emission factors in grams per mile traveled
(g/mile) or comparable units based on application documents, most notably the calculations using Motor
Vehicle Emission Simulator (MOVES) software.
b.
ERC quantification calculations shall not include emission reductions created or used under any other
emissions trading program, emission reductions used to satisfy the State Implementation Plan
including transportation conformity requirements, or any emission reductions pursuant to a federal
consent decree, or state and local settlements.
[SIP Rule 220 §302.2] [Rule 204 §§305.1.b & c] 
37. Operation and Maintenance of CNG-Powered Vehicles:
The Permittee shall operate and maintain CNG-powered vehicles in accordance with the manufacturer’s
written instructions and maintenance program in order to ensure the continued generation of emission
reductions. Vehicle operation and maintenance shall be documented in accordance with Permit Condition
41.d.vii.
[SIP Rule 220 §302.2] [Rule 204 §305.2.a] 
38. Monitoring of Equipment Use:
The Permittee shall monitor the use of all CNG-powered equipment used to generate ERCs to verify that the
equipment is operated in the same manner as was represented in the ERC application, specifically the
emission calculations using Motor Vehicle Emission Simulator (MOVES) software. This monitoring shall
include the follow, at minimum:
a.
Vehicle miles traveled (VMT) for each CNG-powered vehicle;
b.
Percent of VMT within the nonattainment area.
[SIP Rule 220 §302.2] [Rule 204 §305.2.b] 
39. Removal/Disposal of Replaced Equipment:
a.
The Permittee shall permanently remove any replaced diesel-powered equipment from the nonattainment 
area or render the replaced equipment permanently disabled and dispose of in a manner that complies
with all applicable local, state, and federal laws. For future CNG-powered equipment replacements, the
Permittee shall provide evidence of proper disposal upon request from the Control Officer or from the
permitted source using the ERCs as offsets. Evidence shall include at a minimum, serial numbers or
vehicle numbers if the vehicle number is linked in the Permittee’s records to the serial number, and
location of where or how the equipment was disposed or removed from the nonattainment area.
b.
The Permittee shall monitor the location and usage of CNG-powered vehicles that were used to create
ERCs and have been replaced but remain operational outside the ozone nonattainment area. Such
monitoring shall include the following, at minimum:
i.
Name and address of the current owner of the vehicle;
ii.
Documentation showing the current owner’s geographic coverage area;
iii.
Description of current vehicle usage including the following:
1)
Customer names;
2)
Pickup and delivery locations (address or equivalent).
[SIP Rule 220 §302.2] [Rule 204 §305.2.d] 
40. Inspections:
The Permittee shall allow the Control Officer access to the premises for conducting an inspection to
verify compliance with requirements applicable to ERCs and their continued achievement. An
inspection may include, but is not limited to, a review of records and reports.
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White Tanks Transfer Station Facility# F001646 
Permit#: P0008309 
Revision Date: 08/25/2021 
[SIP Rule 220 §302.2] [Rule 204 §502] 
41. Recordkeeping:
a.
Records shall be maintained on site at all times by the Permittee in a consistent and complete manner, in
either electronic or paper format.
b.
Records shall be made available upon request and without delay to the owner or operator of the permitted
source utilizing the ERCs and the Control Officer or his designee.
c.
Records shall be maintained for five (5) years beyond the use or retirement of the ERCs, or five years
after the retirement of a CNG-powered vehicle which was used to generate ERCs. The ERCs are to be
used as offsets for Intel Corporation, facility # F000701, permit # P0006742.
[SIP Rule 220 §302.2] [Rule 204 §501] 
d.
CNG-powered equipment: Records shall include a detailed inventory of all CNG-powered equipment
used to generate ERCs including all of the following for each piece of equipment:
i.
The equipment manufacturer.
ii.
The model number.
iii.
The model year.
iv.
A description of the equipment.
v.
Information on sources used to obtain family or test group, fuel capacities, and emission rates of
each CNG-powered vehicle when used to calculate ERCs.
vi.
The date each CNG-powered vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
vii. Any maintenance performed on a vehicle including the following, at minimum:
1)
A description of the maintenance;
2)
The date that the maintenance was performed;
3)
The effect of the maintenance on the continued achievement of the ERCs.
e.
Diesel-powered vehicle: Records shall include a detailed inventory of all diesel-powered vehicle used for
the same purpose as CNG-powered vehicle including all of the following for each vehicle:
i.
The vehicle manufacturer.
ii.
The model number.
iii.
The model year.
iv.
A description of the vehicle including serial number.
v.
Fuel type.
vi.
The date each vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
f.
Monthly review and, if necessary, update the vehicle inventory.
g.
Operational Records:
i.
Monthly: For each CNG-powered vehicle used to generate ERCs, the Permittee shall record a
description of all maintenance and repairs and at least one of the following to demonstrate the vehicle 
is used in the same manner as was represented in the ERC application, most notably the calculations 
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MARICOPA COUNTY AIR QUALITY DEPARTMENT 
Engineering and Permitting Division 
3800 N. Central Avenue, Suite 1400, Phoenix, Arizona 85012 
Phone: (602) 506-6010  
Fax: (602) 506-6985 
AIR QUALITY PERMIT TO OPERATE AND/OR CONSTRUCT 
(As required by Title 49, Chapter 3, Article 2, Section 49-480, Arizona Revised Statutes) 
ISSUED TO 
DEER VALLEY TRANSFER STATION 
2120 W ADOBE DR 
PHOENIX, AZ 85027 
This air quality permit to operate and/or construct does not relieve the applicant of the 
responsibility of meeting all air pollution regulations. 
THE PERMITTEE IS SUBJECT TO THE SPECIFIC AND GENERAL CONDITIONS IDENTIFIED IN THIS PERMIT. 
FACILITY NUMBER: 
F000443 
 
LEGACY PERMIT NUMBER:  
000024 
PERMIT NUMBER: 
P0008316 
 
REVISION DATE: 
08/25/2021 
EXPIRATION DATE: 
04/30/2025 
 
Todd Martin, Non-Title V Permit Supervisor 
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Deer Valley Transfer Station Facility # F000443 
Permit # P0008316 
Revision Date: 08/25/2021 
43. Removal/Disposal of Replaced Equipment:
a.
The Permittee shall permanently remove any replaced diesel-powered equipment from the nonattainment 
area or render the replaced equipment permanently disabled and dispose of in a manner that complies
with all applicable local, state, and federal laws. For future CNG-powered equipment replacements, the
Permittee shall provide evidence of proper disposal upon request from the Control Officer or from the
permitted source using the ERCs as offsets. Evidence shall include at a minimum, serial numbers or
vehicle numbers if the vehicle number is linked in the Permittee’s records to the serial number, and
location of where or how the equipment was disposed or removed from the nonattainment area.
b.
The Permittee shall monitor the location and usage of CNG-powered vehicles that were used to create
ERCs and have been replaced but remain operational outside the ozone nonattainment area. Such
monitoring shall include the following, at minimum:
i.
Name and address of the current owner of the vehicle;
ii.
Documentation showing the current owner’s geographic coverage area;
iii.
Description of current vehicle usage including the following:
1)
Customer names;
2)
Pickup and delivery locations (address or equivalent).
[SIP Rule 220 §302.2] [Rule 204 §305.2.d] 
44. Inspections:
The Permittee shall allow the Control Officer access to the premises for conducting an inspection to
verify compliance with requirements applicable to ERCs and their continued achievement. An
inspection may include, but is not limited to, a review of records and reports.
[SIP Rule 220 §302.2] [Rule 204 §502] 
45. Recordkeeping:
a.
Records shall be maintained on site at all times by the Permittee in a consistent and complete manner, in
either electronic or paper format.
b.
Records shall be made available upon request and without delay to the owner or operator of the permitted 
source utilizing the ERCs and the Control Officer or his designee.
c.
Records shall be maintained for five (5) years beyond the use or retirement of the ERCs, or five years
after the retirement of a CNG-powered vehicle which was used to generate ERCs. The ERCs are to be
used as offsets for Intel Corporation, facility # F000701, permit # P0006742.
[SIP Rule 220 §302.2] [Rule 204 §501] 
d.
CNG-powered equipment: Records shall include a detailed inventory of all CNG-powered equipment
used to generate ERCs including all of the following for each piece of equipment:
i.
The equipment manufacturer.
ii.
The model number.
iii.
The model year.
iv.
A description of the equipment.
v.
Information on sources used to obtain family or test group, fuel capacities, and emission rates of
each CNG-powered vehicle when used to calculate ERCs.
vi.
The date each CNG-powered vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
vii. Any maintenance performed on a vehicle including the following, at minimum:
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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Deer Valley Transfer Station Facility # F000443 
Permit # P0008316 
Revision Date: 08/25/2021 
1)
A description of the maintenance;
2)
The date that the maintenance was performed;
3)
The effect of the maintenance on the continued achievement of the ERCs.
e.
Diesel-powered vehicle: Records shall include a detailed inventory of all diesel-powered vehicle used for
the same purpose as CNG-powered vehicle including all of the following for each vehicle:
i.
The vehicle manufacturer.
ii.
The model number.
iii.
The model year.
iv.
A description of the vehicle including serial number.
v.
Fuel type.
vi.
The date each vehicle was:
1)
Added to the inventory.
2)
Removed from the inventory.
f.
Monthly review and, if necessary, update the vehicle inventory.
g.
Operational Records:
i.
Monthly: For each CNG-powered vehicle used to generate ERCs, the Permittee shall record a
description of all maintenance and repairs and at least one of the following to demonstrate the vehicle 
is used in the same manner as was represented in the ERC application, most notably the calculations 
using Motor Vehicle Emission Simulator (MOVES) software:
1)
Hours of operation.
2)
Mileage accrued.
ii.
Monthly: For each piece of diesel-fueled vehicle that can be used for the same purpose as the CNG-
powered vehicle used to generate ERCs, the Permittee shall record a description of all maintenance
and repairs and at least one of the following:
1)
Hours of operation.
2)
Mileage accrued.
3)
Fuel consumed.
h.
Replacement of diesel vehicles:
For any diesel vehicle that is replaced with a higher emitting vehicle, the Permittee shall notify the
Department by the end of the month following the vehicle replacement so the Department can review
Permittee records to ensure the ERCs continue to meet applicable requirements.
[SIP Rule 220 §302.2][Rule 204 §505] 
46. Annual Reporting:
The Permittee shall submit a report to the Control Officer annually by March 1 for the most recent calendar
year.  The report shall include the following, at minimum:
a.
The quantity of ERCs, the vehicles used to generate the ERCs, and the identification of the vehicles, and
their location and usage.
b.
A summary of the operation and maintenance of vehicles for the continued achievement of the ERCs.
The summary shall include the following, at minimum:
i.
A description of maintenance performed to ensure vehicle emissions remain at the level necessary
to achieve the ERCs;
ii.
A description of vehicle usage as it relates to emissions to ensure continued achievement of the
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REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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Return to Table of Contents 
REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 2: 
WASTE MANAGEMENT EMISSION REDUCTION CREDIT CERTIFICATION 
PACKAGES 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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August 25, 2021 
Daniel Czecholinski 
Philip A. McNeely, R.G. Director 
Phone: 602-506-6701 
Email: Philip.McNeely@maricopa.gov 
Maricopa.gov I AQ 
CleanA irMakeMore.com 
J\.ir Quality Division Director 
Arizona Department of Environmental Quality 
1110 West Washington Street 
Phoenix, Arizona 85007 
RE: 
Emissions Reduction Certification (ERC) 
Waste Management of Arizona, Inc. (Santan Transfer Station) - MCAQD Facility F001645 
Dear Mr. Czecholinski: 
The Maricopa County J\.ir Quality Department (IYICAQD) has verified the credit and number of 
tons of actual emissions that have been reduced by replacing diesel-fueled solid waste collection 
trucks with CNG-fueled tlucks based at the Waste Management Santan Transfer Station located at 
4040 South 80th Street in Mesa, _Arizona. In accordance with the Arizona Administrative Code, the 
following actual emissions have been verified for use as certified emission credits: 
Nitrogen Oxides (NOx): 18.3 tons/year 
Per Maricopa County Rule 204 §301 and AAC Rule 18-2-1205.A, the Control Officer may certify an 
emission credit if the credit is verified and determined by all of the following: 
1. A reduction in actual emissions that occurred after August 17, 1999. 
The facility has replaced 129 diese/ft1e/ed solid waste co//ectio11 tn1cks with 129 CNGft1eled solid waste co!!ettion 
!tucks. Actt1al NOx emissions from CNG tn1cks are 65 - 90% less than dieselft1eled trucks depe11di11g 011 mode/ 
yem: 
2. A quantifiable reduction in actual emissions. 
The applicant sttbmitted ca/c11/ations ttsing EPA 's LVIotor Vehicle Emissions S imttlator so.fiware (v3. 01) to qt1C1ntijj 
emissiom from both the old and new trucks. Actttai vehide mi/es tmveled were also provided to define the act11al 
emissiom. Emission baseline from the dieseift1eled tr11cks has been calcttlated over a seties efyears (i.e., 2013-2021) 
depending on when the actttal conversion occmrecl. 
3. A permanent reduction in actual emissions. 
The trucks removed from sm1ice must be disabled or moued outside of the JVfaricopa Cot111ry 11011-attaimmnt area as 
req11ired in the site air quali!J permit P0008308. The permit a/so req11ires that airy ft1t11re replacement of trt1cks 
mttst be eqttal to or lower emitting than the tr11ck beillg replaced. These e1iforceable pmvit conditions make the 
emission red11ctio11s pe1ma11e11t. 
Return to Table of Contents
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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Daniel Czechollnski 
Dole: August 25. 2021 
Page 2 of 2 
4. An enforceable reduction in actual emissions. 
The air quality permit (i.e., P0008308) for the facility includes provisions reqt1ili11g removal of the dieselfired tn1cks 
that J.JJere replaced f?J the CNGjired tn1cks be removed from the lvlmicopa Co1111(y ozone 11011-attai11ment a red. 
Additional conditions in the pe1mit req11ire monitoring and record keeping to f11rther make the redt1ctio11s enforceable. 
5. A sutplus reduction in actual emissions occurring in addition to any other required emission 
reduction. 
The type of tmcks that formed the hasis for the emission credit have bee11 listed i11 the 2017 Ozone Pe1iodic Emission 
Inventory (PEI) and previous PEis as dieself11eled vehicles. These i11ve11tolies are ttsed for regional pla1111ing f?y the 
J\!Ian'cupa Association of Governments. No e1J1issio11redttctiom1verc reqttired at the sotm:e either through pla1111i11g or 
reg11/ation that wo11ld reduce the certified credits. Therefore, the /mver emitting CNGjired tn1cks are s111plt1s to the 
i11ventory. Co11seqt1e11t!J, the table be/01v is ct s11111mary of the emission credit calcttlatio11. 
Pollutant 
Baseline Emissions 
Ongoing Emissions 
Certified Credits 
(tons/year) 
(tons/vear) 
(tons/year) 
NOx 
23.4 
5.1 
18.3 
Based on the information submitted by the souxce and verified as described above, the MCAQD 
certifies emission reduction credits in the amount of 18.3 tons of N Ox. 
This notification is being provided to the Arizona Department of Environmental Quality in the 
event the applicant submits the certified ERCs for deposit in the Arizona Emissions Bank. 
If you have any questions or need additional information, please contact Richard Sumner of my staff 
at Richard.sumner@maricopa.gov or 602-506-1842. 
Sincerely, 
t!fti!:<~ 
Director 
Maricopa County Air· Quality Department 
Cc: 
David Bearden, Waste Management of Arizona, Inc. 
Attachments 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
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Emission Reduction Credit 
Evaluation 
Source: Waste Management (Santan Transfer Station) 
Facility ID: F001645 
Permit: P0008308 
Date: August 11, 2021 
Project Description: Replace diesel-powered solid waste collection trucks with CNG-powered trucks. 
Baseline Emissions: CNG trucks were brought into the fleet over a number of years. Therefore, the baseline is the diesel truck that was 
replaced by the CNG truck. For example, the NOx emission rate from the diesel truck was 5.29 g/mile and CNG truck #211914 
emission rate put into service in 2015 is 1.76 g/mile. (Emission rates based on EPA MOVES 3.01.) The reduction is the difference 
between the baseline diesel truck emission rate and the CNG truck emission rate. Credits are reduced by 2.5% to allow for 
mileage outside of the non-attainment area. Annual mileage used in the calculation is 97.5% of actual average mileage for each 
individual truck. Note: Santan Transfer Station includes both Santan Fleet and Elwood Fleet. 
Example Calculation (1 Truck): (5.29 g/mile - 1.76 g/mile) x 35,649 miles/year x 0.975 = 122,695 g/yr = 0.135 tons/year 
Total NOx from the attached spreadsheet for 73 trucks (Santan Fleet)= 10.6954 tons (uncorrected for outside non attainment area) 
Total Creditable NOx (after correction)= 10.6954 tons (97.5/97.51) = 10.7 tons 
Creditable NOx reduction (Santan Fleet)= 10.7 tons 
Total NOx from the attached spreadsheet for 56 trucks (Elwood Fleet)= 7.7929 tons (uncorrected for outside non attainment area) 
Total Creditable NOx (after correction)= 7.7929 tons (97.5/100) = 7.6 tons 
Creditable NOx reduction (Elwood Fleet)= 7.6 tons 
Total Creditable NOx reduction= 10.7 + 7.6 = 18.3 tons 
Prepared by Richard Sumner 
August 11, 2021 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
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Relurn complelecl form lo 
Maricopa County Air Quallly Deportment 
3800 l•lorth Central Ave Svile 1400. Phoenix AZ 850 12 
Phone: 602.506.60 10 fox. 602.372.0587 
AQPermil s ii'm ail.moricopo.gov 
3800 t·lort>1 Central A•1e. 5uile I ~00 . Phoenix. AZ 85012 or 50 1 l•lorlh <14th St, Suite 200 Pnoen1.< AZ 850013. 
Emission Reduction Credit Application 
F:ml.tl)• lnfonnarion 
1. Facility Name: 
Waste i\lanagement of Arizona, Inc. 
222 S. ~Iill :\ve., Suite 333 
2. Faciltty Address: 
City: 
Tempe 
State: .-\rizona 
Zip Code: 85281 
3. Permit#: 
040086/FOOl646 (White Tnnks)g t'>!.\oai.? /roa\t:.'-f.5 { Sl\i'l'fA-'1l·oc:ioG83S/~DMLl43 ( b~J~~I 
Contact Information 
I 
4. Is the facility information the same as the contact infonnat1on? 
YesO 
No l2J 
5. Contact Name: Dave Bearden 
222 S. ~1111 :\vc., Suite 333 
6. Conract _-\ddress: 
City: 
Tempe 
Srnte: 
Arizona 
Zip Code: 85281 
7. Pollutant (Complete a separate sheet for each pollutant): 
NOx 
8. Date: 
Jun 28, 2021 
9. List of the equipmenr/process involved with the emission reduction: 
Solid Waste Collection Trucks converted from diesel fuel to compressed natural gas 
I Add a Rnw IDcletc a Rov. 
10. Describe how the emission reduction will be accomplished: 
Waste Management has been con\'erting the majority of their solid waste collection truck neets in the Phocni.."\: area from diesel fuel co 
Compressed Natuml Gas (CNG), and is applring for NOx Emissions lleducuon Credits (ERCs) from the voluntaxy conversion of trucks 
from diesel to CNG operation. The trucks arc associated with four collection fleets operate at three transfer stauons m the non-
attainment area. :\ttachmcnt A pro\•ides gualifying crircria, mechod of calculauons and fleet calculauons which have bern met in the 
generation of these ERCs. 
11. Estimated date of emission reduction: various sec attachment:\ 
12. Describe how rhe reduction will be made permancnr: 
13. Baseline period (two calendar years): 
2020 
2021 
If rhis is not the most recent cwo calendar years, pro\'idc a detailed explanation of why the most recent years were not used. 
111e requin:mcnts related to the ERCs will be included with pennit modification for the tl"'ilnsfcr srntions \\'hitc Tanks, Deer Valley and 
San Tan. The proposed requirements celarc to I) \'V?lf will continue to purchase CNG trucks or alternative trucks with at least or better 
NOx emissions compared to the cucrenr Cummins Engine, 2) perform routine engine maintenance and 3) maintain ar least 22 trucks 
operating 95% or more of their time in the Non-attainment Arca. 
14. Identify the method that is proposed to calculatc rhc baseline emissions and how that method is being uscd. {Examples: matcrlnl 
balance, performance test data, continuous momtor, crrussion factors, etc.) 
Sec Attachment i\ - Criteria, Methods of Calculations and Fleet Calculations 
RcviscJ 13Marl9 
!'age 1 of'.!. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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f' 'IJll C JI• f r· 
l · ::•; 
'. 
Maricopa County A'r Quality Deportmeril 
33'J{ , ., 11 
r_ ~~:}' ·.JI \ 
•: · · '! 1 
1 ··r, .n 
•\/ ( 1· )' 1 
15. Llsr rhe seasonal emission rate on a quartcrlr basis from the opcr:ition/ process that provided the emission reduction. 
Bnschnc Ycnr One 
2020 
~[: 
<.J2: 
t.l3: 
~4: 
Bnsehne \\-ar Two 
2021 
QI: 
Q2: 
Q3: 
Q4: 
16. Calculation of base\Jnc cm1ss1ons m tons per year: 
.\. List anr emission factors wirh rhc1r source (mcludc unirs): 
Sec :\ttachmcnt :\ 
I Add :i Row IDclctc :i Ro" 
6 , List assumpt10ns made to perform the cakulauons: 
Sec ;\tt:ichmcnt .-\ 
C. Show s;imple of c;1lcubt10ns made ro nrify cm1ss1on reducuon: 
Sec :\nachmcnt ;\ 
D. Baseline emission rntc: (tons per year}: 
3Y.14 
E. Provide a list of documents attached to substantiate the lmsis for the cnlculatlom (e.g., safety data sheets, process records, 
matcnal use records, monttonng records, etc.). 
Sec :\trnchmcnt .:\ 
j Add a Row., Ddcu: a Row 
F. Comml'nts or add1t1onal 1nfonnauon: 
17. Do you plan to register the ceruficd credits m the .-\nzona Em1ss1ons Bank administered by the ;\rizon:i Department of 
Enmonml'ntal Qua~ty (. \DEQ)? 
IZ]Ycs 
0 No 
If yes, tht're ls a registration fee of S200 parable to .-\ DEQ. For more 
1nform:111on about the ~\nzona Etl1lss1ons B:1nk please CC\1CW :\nzona :\dmrn1strat1vc Code Title I 8, Chnptcr 2, :\rnclc 12. 
18. r ceruf)· that the statements nnd information prO\·ided herein arc true, accur;itc, and complete based on mformation and belief formed 
a[tcr reasonable inquiry. 
-
Stgnaturc of owner or rcspnnsthle official: I ~~wl... 
I 
Trpc: or print name and utlc : I 
o~ ~lLr~ 
I 
D:1tc: I '7/13jlot~ 
tlcrnro.I 13.\l:irl 9 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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Attachment A- Criteria, Methods of Calculations and Fleet Calculations 
The five ERC qualifying criteria are being met in the generation of these ERCs: 
• 
Real Each of the CNG trucks are designed to operate solely on natural gas. There is extensive 
evidence, including engine certification testing results, to show that these trucks emit less NOx on a per 
mile basis that their diesel counter parts. In quantifying the ERCs, actual miles traveled in the 
nonattainment area are combined with actual emissions rates using standardize EPA modeling methods 
applicable to these operating conditions. While these new CNG trucks are replacing older diesel trucks 
with much higher NOx emissions, to assure that the reductions are real, the analysis is based on the 
emissions of the CNG trash truck in comparison to a new diesel trash truck of the same vintage. 
• 
Quantifiable As described In detail in this Appendix A, the emissions reduction resulting from 
the voluntary replacement of diesel trash collection trucks with lower NOx emitting CNG trucks is being 
quantified using the EPA MOVES3.01, reflecting the miles traveled by the CNG trucks within the 
nonattainment area. The model has been adjusted to reflect actual use patterns of the Waste 
Management trash trucks and the difference in emissions between diesel and CNG in the year each CNG 
truck was or will be placed into service. 
• 
Surplus The conversion to CNG trash truck fleets is being carried out on a voluntary basis. It is 
not being done to comply with any current or anticipated regulatory requirement. We understand that 
trash truck is the region appear as diesel powered In the Regional Ozone Modeling over the last decade 
Including the latest (2017) Reglonal emissions inventory. 
• 
Permanent Waste Management is proposing to make these reductions pe'rmanent by keeping 
these CNG trucks in service in the nonattalnment area and replacing them with CNG trucks or trucks 
with equal or lower NOx emissions whenever one is removed from service. Proposed permit conditions 
that would be added to the air permit of the Fleet location, reflecting this commitment, are presented in 
Appendix B. 
• 
Enforceable The Fleet requirements will be added to existing minor source air permits issued 
by the Maricopa County Air Quality Department. The conditions of these air permits are federally 
enforceable. Waste Management will be requesting permit conditions in each of these permits that will 
make the continuing use of these CNG trucks or replacement trucks with equal or lower NOx emissions 
in the nonattainment area. See Appendix B. This will make the action that Waste Management has 
taken to create these ERCs federally enforceable. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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The methods of calculations for the ERCs are: 
Waste Management currently operates 225 refuse trucks powered by compressed natural gas 
(CNG) engines in the greater Phoenix area that collect waste and deliver it to transfer stations. 
The fleets are referred to as White Tank, San Tan, North Phoenix and Elwood. These CNG 
vehicles are powered by U.S. EPA certified 2011to2020 model-year Cummins 8.9-liter engines. 
The model-year 2011 to 2015 engines were certified by Cummins to the 0.2 g/bhp-hr NOx 
standard that applies to 2010 and later model-year vehicles while the 2016 and later model-
year engines were certified by Cummins to family NOx emissions limits (FELs) of 0.02 g/bhp-hr. 
The MERC calculation methodology is based on a comparison of the CNG refuse truck emissions 
to the emissions of a diesel refuse truck of the same model year. A credit calculation is 
performed for each CNG vehicle based the vehicle's lifetime average annual mileage reported 
by Waste Management and the differential in emissions NOx between the CNG vehicle and a 
diesel-powered refuse truck with an engine of the same model-year, computed for calendar 
year 2021 derived from EPA's MOVES3.01. 
The emissions differential calculation begins with 2010 through 2020 model-year emission 
factors (in units of grams of NOx per mile of operation) for diesel and CNG refuse trucks 
obtained by running MOVES 3.01 configured for Maricopa County in calendar year 2021. Two 
adjustments were made to the MOVES 3.01 emission factors. The first was made to account for 
the fact that the engines in the 2016 and later Waste Management CNG vehicles were certified 
to a family emissions level (FEL) of 0.02 g/bhp·hr for NOx which is 10 times lower than the 
applicable emission standard of 0.20 g/bhp-hr which is assumed in MOVES3.01.1 Therefore, 
CNG emission rates for 2016 to 2020 model-year vehicles were assumed to be one-tenth of the 
comparable diesel emission rate. 
The second adjustment was made to account for the actual load factors experienced by Waste 
Management's CNG vehicles during routine operations which is not appropriately accounted 
for in MOVES 3.01.2 More specifically, Waste Management collected engine load data using a 
Cummins engine analyzer3 from three trucks operating on actual in-use refuse routes 
representative of the three main types of refuse truck operation occurring in the Waste 
Management: 1) residential, 2) roll-off, and 3) frontload. These load factors were determined 
1 Based on a review of the MOVES3 documentation related to emission factors for heavy-duty CNG trucks, it is 
clear that the MOVES emission factors are based on data from 2011 and 2014 model-year vehicles certified to the 
0.20 g/bhp-hr standard which overestimates the actual emissions of the 2016 to 2020 model-year CNG trucks. See 
"Exhaust Emission Rates for Heavy-Duty Onroad Vehicles in MOVES3", EPA-420-R-20-018, November 2020, page 
197. 
2 For example, the MOVES3.01 fuel consumption values for 2011to2020 model-year refuse trucks are only about 
12% higher than for transit buses rather than the expected average of about 30%. See Alternative Fuels Data 
Center: Maps and Data - Average Fuel Economy by Major Vehicle Category (energy.gov) 
3 The analyzer is lap top based unit that directly reads engine performance, monitoring data and calculate 
parameters including the engine load factor. Dave - can you provide the name of software and maybe a llnk to a 
Cummins web page where it is described? 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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to be 40.5% for residential, 31.5% for roll-off, and 38% for front end loaders which are much 
higher than the 20 to 25% load engines experience during certification emissions testing.• 
Therefore the diesel and CNG emission rates from MOVES3.01 were scaled using the load 
factors provided by Waste Management divided by the 25% value that is the upper bound of 
the range reported from certification testing. 
The final MERC calculation for each CNG vehicle involved multiplying the weighted average 
annual milage of that type of vehicle by the emissions difference between the diesel and CNG 
emission rates. For example, the MERC value for a 2015 residential refuse truck that travels 
50,000 miles would be: 
MERC (tons/year)= 50,000 miles/year* (4.20-1.40) grams NOx/mile • (40.5/25) 
= 243,000 grams NOx/year = 0.27 tons NOx/year 
Where 4.20 and 1.40 grams NOx/mile are the MOVES3 generated NOx emission factors for 
2015 model-year diesel and CNG refuse trucks, respectively. 
While the MERC value for a 2020 front end loader refuse truck traveling 50,000 miles a year 
would be: 
MERC (tons/year)= 50,000 miles/year* (2.84 - 0.284) grams NOx/mile * (38/25) 
= 194,256 grams NOx/year = 0.21 tons NOx/year 
Where 2.84 grams NOx/mile is the diesel emission factor and 0.284 the assumed natural gas 
emission factor given engine certification to a 0.02 g/bhp-hr NOx FEL. 
The annual emissions reductions associated with CNG use in the individual trucks are then 
summed over all trucks to arrive at the total MERC value for the 225 trucks. This value is then 
multiplied by 0.95 in order to account for actual CNG truck operation in the Phoenix non-
attainment area based on Information provided by Waste Management indicating that 5% of 
their operation occurs outside the nonattainment area. 
4 Transit Bus Load-Based Modal Emission Rate Model Development, EPA/600/R-07 /106, July 2007, page 3·2. 
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Appendix B 
Proposed Permit Conditions for the Use of CNG Trash Trucks by the Waste 
Management Fleets in the Maricopa Nonattainment Area1 
Waste Management (WM) will maintain and operate a minimum of 225 CNG fueled trash trucks, 
serving the four Fleets in the greater Phoenix area. Any retired CNG truck will be replaced with 
either a new CNG truck certified at 0.02 g/bhp-hr or lower NOx emitting trash truck fueled with CNG 
or an alternative fuel, with the replacement truck counting towards this total. 
WM will conduct periodic service on each CNG truck consistent with the manufacturer's 
recommendations consisting of: 
Applicable 
Engine 
Description of Service 
-
ALL 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics, check 
fuel filter for moisture 
I 
-
ALL 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth, includes gas leak detection system validation 
12L Gas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. includes engine oil and lube filter replacement 
12L Gas 
Spark Plug and Ignition System Service 
ALL 
Specific Inspections related to CNG engines and fuel system, 
Includes the service of the high pressure and low-pressure fuel 
filters 
! 
9LGas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. Includes servicing high pressure and low-
pressure fuel filters, engine oil and filter replacement 
9LGas 
Spark Plug and Ignition System Service 
ALL 
Specific inspection related to Engine, Transmission, Axles, Body 
and Hydraulics 
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ALL 
Specific CNG Engine and fuel system inspection items, Engine 
valve lash inspection and adjustment service 
ALL 
Service of CNG Fuel Delivery and Leak Detection System 
ALL 
CNG Tanks and Fuel Delivery System Inspection by qualified 
Inspector 
ALL 
Annual DOT Inspection, PMI Forms have grayed sections that 
need to be filled out for this service 
WM shall maintain the following records: 
• 
Inventory of the CNG trucks used by these four Fleets 
• 
Records of the maintenance of these vehicles 
Additionally, we propose to keep records showing generally that the CNG trash trucks are being used 
in a manner consistent with the derivation of the ERCs. Without an enforceable limit. This would be 
keeping the following records: 
• 
As part of the inventory of the CNG trucks, annually provide a listing the route(s) for each 
truck with an annotation of whether the route is or is not predominantly in the 
nonattainment area. 
This would include: 
• 
Annually, WM shall demonstrate that 95% or more of the routes use by their CNG trucks 
were predominately in the nonattainment area. 
• 
If this figure is not met, WM will notify the MCAPD and explain why the usage was less than 
expected, what actions WM is taking to ensure that CNG truck use is consistent with this 
target, and the outlook for the coming year. 
These conditions would be Inserted into the current air permits of each of the four fleets using the CNG trucks for trash 
collection. 
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Page 31 of 73
DRAFT

Refuse truck activity 2021 NOx emission factors (g/mi) 
Model year 
Gasoline 
Diesel 
CNG 
1992 
7.18 
29.66 
1993 
8.17 
29.79 
1994 
7.35 
29.75 
1995 
7.19 
28.02 
1996 
7.19 
29.88 
1997 
8.25 
29.91 
1998 
4.24 
27.19 
1999 
4.24 
21.32 
2000 
20.39 
2001 
20.43 
2002 
20.25 
2003 
1.50 
10.74 
2004 
10.73 
2005 
1.45 
10.75 
2006 
1.45 
10.76 
2007 
1.56 
7.52 
2008 
0.47 
7.29 
2009 
0.47 
7.47 
2010 
5.88 
2011 
5.16 
2012 
5.27 
2013 
0.32 
4.24 
2014 
4.20 
2015 
4.20 
2016 
4.09 
2017 
3.90 
2018 
2.84 
2019 
2.84 
2020 
2.84 
2021 
2.84 
0.02 CNG 
8.30 
8.30 
8.30 
1.40 
1.40 
1.40 
1.40 
1.40 
1.40 
0.93 
0.93 
0.93 
0.93 
0.93 
0.93 
Total Credits 
Total Vehicles 
average mileage residential 
average mileage roll off 
average mileage front load 
34.14 tons 
225.00 
18068 
29577 
44463 
0.41 
CNG emissions rotes for vehicles certified to 0.02 g/bhp-hr 
0.39 
FEL ore assumed to be 10% of some model-year diesel 
0.28 
emission rotes 
0.28 
0.28 
0.28 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 32 of 73
DRAFT

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REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 33 of 73
DRAFT

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16 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 34 of 73
DRAFT

August 13, 2021 
Daniel Czecholinski 
Philip A. McNeely, R.G. Director 
Phone: 602-506-6701 
Email: Philip.McNeely@maricopa.gov 
Maricopa.gov/AQ 
C leanAirMakeMore.com 
Air Quality Division Director 
Arizona Department of Environmental Quality 
1110 West Washington Street 
PhoenL'{, Arizona 85007 
RE: 
Emissions Reduction Certification (ERC) 
Waste Management of Arizona, Inc. (White Tank Transfer Station) - MCAQD Facility 
F001646 
Dear Mr. Czecholinski: 
The Maricopa County Air Quality Department (MCAQD) has verified the credit and number of 
tons of actual emissions that have been reduced by replacing diesel-fueled solid waste collection 
trucks with CNG-fueled trucks based at the Waste Management White Tank Transfer Station 
located at 18605 West McDowell Road in Goodyear, Arizona. In accordance with the Arizona 
Administrative Code, the following actual emissions have been verified for use as certified emission 
credits: 
· 
Nitrogen Oxides (NOx): 4.1 tons/year 
Per Maricopa County Rule 204 §301 and AAC Rule 18-2-1205.A, the Control Officer may certify an 
emission credit if the credit is verified and dete1mined by all of the following: 
1. A reduction in actual emissions that occurred after August 17, 1999. 
The facili!J has replaced 22 dieselji1eled solid waste collection tmcks with 22 CNGft1eled solid waste collection 
trttcks. Actttal NOx emissions from CNG trttcks are 65 - 90% less than dieselji1eled tntcks depending on model 
yet11: 
2. A quantifiable reduction in actual emissions. 
The applicant submitted calc11lations using EPA 's lvlotor Vehicle Emissions Simulator software (v3.01) to qt1a11tijj 
emissions from both the old and new tmcks. Actual vehicle miles traveled ivere also provided to define the actttal 
emissions. EmissioJI baseline from the diese!jiteled tr'lfcks has been calm lated over a SCJies of years (i.e., 2013-2021) 
depending 011 when the adtta! conversion occmn:d. 
3. A permanent reduction in actual emissions. 
The tntcks removed from service mttst be disabled or moved outside of the Nfaricopa Cotm!J non-attainment area as 
required in the site air quality permit P0008309. The permit also requires that tll!J f11t11re replacemmt qf tntcks 
must be eqttal to or lower emitting than the tr11ck being replaced. These ei({ontJable permit co11ditio11s make the 
emissio11 reductions permanent. 
Return to Table of Contents
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 35 of 73
DRAFT

Daniel Czecholinski 
Date: August 13, 2021 
Page 2of 2 
4. An enforceable reduction in actual emissions. 
The air qualiry permit (i.e., P0008309) far the faci!iry indttdes pmvisio11s reqttiring ret11oval ef the dieseljired tr11cks 
that JJJere replaced ry the CNGJired !nicks be ret11oved fmtn the lvlaricopa Comiry ozone non-attai11me11t area. 
Additional conditions in the permit require monitoring and record keeping to ft11ther make the redttctions e1iforceable. 
5. A surplus reduction in actual emissions occurring in addition to any other required emission 
reduction. 
The rype ef trucks that farmed the basisfar the et11issio11 credit have been listed in the 2017 Ozone Periodic Emission 
Inventory (PEI) and previotts PEis c1s dieselfi1eled vehicles. These inventories are ttsed far regional planning ry the 
J\1micopa Association qf Governme11ts. No et11issio11 red11dio11s were required at the source either thrrmgh pla1111i11g or 
regulation that wo1t!d reduce the ce1tified credits. TherefOre, the !oJJJer emitting CNGJired tr11cks are st11p!t1s to the 
inventory. Conseqttent!J, the table below is a smm11ary ef the emission credit calculation. 
Pollutant 
Baseline Emissions 
Ongoing Emissions 
Certified Credits 
(tons/year) 
(tons/year) 
(tons/year) 
NOx 
4.6 
0.5 
4.1 
Based on the information submitted by the source and verified as described above, the MCAQD 
certifies emission reduction credits in the amount of 4.1 tons of NOx. 
T his notification is being provided to the Arizona Department of Environmental Quality in the 
event the applicant submits the certified ERCs for deposit in the Arizona Emissions Bank. 
If you have any questions or need additional information, please contact Richard Sumner of my staff 
at Richard.sumner@maricopa.gov or 602-506-1842. 
l,Zj#u 
Philip A. McNeely, RG 
Director 
Maricopa County Air Quality Department 
Cc: 
David Bearden, Waste Management of Arizona, Inc. 
Attachments 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 36 of 73
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Emission Reduction Credit 
Evaluation 
Source: Waste Management (White Tank Transfer Station) 
Facility ID: F001646 
Permit: P0008309 
Date: August 11, 2021 
Project Description: Replace diesel-powered solid waste collection trucks with CNG-powered trucks. 
Baseline Emissions: CNG trucks were brought into the fleet over a number of years. Therefore, the baseline is the diesel truck that was 
replaced by the CNG truck. For example, the NOx emission rate from the diesel truck was 6.32 g/mile and CNG truck #106190 
emission rate put into service in 2018 is 0.63 g/mile. (Emission rates based on EPA MOVES 3.01.) The reduction is the difference 
between the baseline diesel truck emission rate and the CNG truck emission rate. Credits are reduced by 2.5% to allow for 
mileage outside of the non-attainment area. Annual mileage used in the calculation is 97.5% of actual average mileage for each 
individual truck. 
Sample Calculation (1 Truck): (6.32 g/mile - 0.63 g/mile) x 13,220 miles/year x 0.975 = 118,813 g/yr = 0.08 tons/year 
Total NOx from the attached spreadsheet for 22 trucks= 4.1395 tons (uncorrected for outside non attainment area) 
Total Creditable NOx (after correction)= 4.1395 tons (97.5/99.17) 
Creditable NOx reduction= 4.1 tons 
Prepared by Richard Sumner 
August 11, 2021 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
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Page 37 of 73
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Relurn completed form lo 
Maricopa Counly Air Quollly Department 
J800 1 lorlh Central Ave Suile I ·100. Phoen1~ AZ 85012 
Phone: 602.506.60 I 0 Fa~. 602.372.0587 
AQPermilsitmail.moricopo.gov 
36001 101111 Central Ave. Suire I .100. Phoenix. AZ 85012 or 501 Mo1lh .1,1111 SI, Suile 200 Pnoeno~ AZ 85000. 
Emission Reduction Credit Application 
Fac11.11y Information 
I. Facilirr Name: 
Waste Management of :\rizona, lnc. 
222 S. ~dill :\ve., Suite 333 
2. FacilHJ Address: 
Ctty: 
Tempe 
Stace: • .\rizona 
Zip Code; 85281 
. 
3. Permit#: 
040086/ F0016-16 (\'<'hite Tanks)a 
'Ol\002..'7 /Foo\ r.115 { Sl\r.ii'Afl). ObC>~'{ 3S/f DC>Ol.Jl\ 3 { i)€A._ ~~'1' ') 
Contact Information 
I 
-1. Is the facility information the same as the contact information? 
YesO 
No [8J 
5. Contact Name: Dave BC'.uden 
222 S. l\1111 Ave., Suite 333 
6. Contact Address: 
City: 
Tempe 
Stare: 
Arizona 
Zip Code: 85281 
7. Pollutant (Complete a separate sheet for e:ich pollutant): 
NOx 
8. Date: 
Jun 28, 2021 
9. l.Jst of 1hc equipment/process involved with 1he emission reduction: 
Solid Waste Collection Trucks converted from diesel fuel to compressed natural gas 
, ,\dd a Rm1: IDclca: n Rw 
10. Describe how the emission reduction will be :iccomphshed: 
Waste Management has been converting the majority of their solid waste collection truck fleets in the Phoenb: area from dtescl fuel co 
Compressed Natural Gas (CNG), and is appliing foe NOx Emissions Reducuon Credits (ERCs) from the voluntary conversion of trucks 
from diesel to CNG oper.ition. TI1e trucks arc associated w11h four collection tleets operate at three transfer stauons m the non-
attainment area. Attachment A prO\·ides qualifying criteria, method of calculations and fleet calculanons which have been met in the 
generation of these ERCs. 
11. Estimated d:1te of emission reduction: various sec attachment:\ 
12. Describe how the reduction will be made permanent: 
13. Baseline period (two calcnd:u years): 
2020 
2021 
If this is not the most recent cwo calendar years, provide a detailed explanation of why the most recent years were not used. 
11le requirements related to the ERCs will be included with permit modification for the transfer st;1tions \\'hite Tanks, Deer Valley and 
San Tan. The proposed requirements relate to I) \'171! will continue to purchase CNG trucks or alternative trucks with at least or better 
NOx emissions compared to the current Cummins Engine, 2) perform routine engine maintenance and 3) maint:un ar least 22 trucks 
operating 95% or more of their time in 1he Non·attainmcnt .Arca. 
14. Identify the method that is proposed to calculate the baseline crrussions and how that method is being used. (Examples: matcrinl 
balance, performance test data, continuous monitor, emission factors, etc.) 
Sec Attachment A - Criteria, ~lcthods of Calculations and Fleet Calculations 
lkvlscJ 13Mnrl 9 
l'agc 1 of'.! 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
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'11': 
•I 
Maricopa County Afr Quality Oeportme1>i 
33·-;f: 
ii 
; ;j .. I" 
t 5. List the seasonal emission rate on a quactcdr basis from the operation/process rhat provxdcd the c-m1ss1on rcducuon. 
Bnschnc \'car One 
2010 
l.) I: 
l.)2: 
l.)3: 
l.)4 
.~---·"~"--~ 
----~~ 
Baseline \\-ar T\\·o 
2021 
QI: 
Q2: 
Q3: 
Q4: 
16. Calculation of bj.Scltne cm1ss1ons 10 tons per rear; 
.\ List nny emission factors \Vlfh their source (include units)'. 
Sec .-\ttat:hrncnt :\ 
I 1\dd a Row IDclctc: a Ro" 
B. List assumpuons made to perform the C\tlcuhluons: 
Sec .-\trachmcnt ;\ 
C. Sho\v ~ample of c:i.kubtions m;-ide to Ycrtfv cm1~s1on reducnon: 
~cc ;\ttachmcot A 
D. Busehnc emission rate (tons per year): 
3'-1, I '-l 
E. Pro'l.1dc n List of documents attached to substantiate rhc Im.sis for the calculauons (e.g., safety data sheets, process records, 
matenal use records, monttonng records, etc.). 
Sec Attachment.-\ 
I i\dd a Row I Delete: a Row 
f. Comments or addiuonal tnformauon: 
l7. Do rou plan to register the CcctJficd credits In the • .-\nzona Emissions Bank administered by the o\rtzon;1 Department of 
Enntonmcnrnl QuaU~· (. \DEQ)? [{]Yes 
0No 
If yes, there IS a registration fee of $200 parable to :-\.DEQ. For more 
1nformauon about the Ar1zon:1 Em1ss1ons Bank please rc\'IC\\' .-\nzon:i. .-\dnun1strit1ve Code Title 18, Chapter 2, :\rude 12. 
18. I cerufy that the statcn1cnts and 1nfonnation proYidcd herein arc true, accurate, and complete based on information and belief formed 
after reasonable inquiry. 
-
. 
Signature of o\vncr or responsible offic:taL I µ " . /\ {{.,,, wl... 
Type or print name and 1irlc : I 
o~ ~ttrk 
I 
Date: I '711312.ot~ 
lk•v1sl'J IJ~larl 9 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
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Attachment A - Criteria. Methods of Calculations and Fleet Calculations 
The five ERC qualifying criteria are being met in the generation of these ERCs: 
• 
Real Each of the CNG trucks are designed to operate solely on natural gas. There is extensive 
evidence, including engine certification testing results, to show that these trucks emit less NOx on a per 
mile basis that their diesel counter parts. In quantifying the ERCs, actual miles traveled in the 
nonattainment area are combined with actual emissions rates using standardize EPA modeling methods 
applicable to these operating conditions. While these new CNG trucks are replacing older diesel trucks 
with much higher NOx emissions, to assure that the reductions are real, the analysis is based on the 
emissions of the CNG trash truck in comparison to a new diesel trash truck of the same vintage. 
• 
Quantifiable As described in detail in this Appendix A, the emissions reduction resulting from 
the voluntary replacement of diesel trash collection trucks with lower NOx emitting CNG trucks is being 
quantified using the EPA MOVES3.01, reflecting the miles traveled by the CNG trucks within the 
nonattainment area. The model has been adjusted to reflect actual use patterns of the Waste 
Management trash trucks and the difference in emissions between diesel and CNG in the year each CNG 
truck was or will be placed into service. 
• 
Surplus The conversion to CNG trash truck fleets is being carried out on a voluntary basis. It is 
not being done to comply with any current or anticipated regulatory requirement. We understand that 
trash truck is the region appear as diesel powered In the Regional Ozone Modeling over the last decade 
including the latest (2017) Regional emissions inventory. 
• 
Permanent Waste Management is proposing to make these reductions permanent by keeping 
these CNG trucks in service in the nonattainment area and replacing them with CNG trucks or trucks 
with equal or lower NOx emissions whenever one is removed from service. Proposed permit conditions 
that would be added to the air permit of the Fleet location, reflecting this commitment, are presented in 
Appendix 8. 
• 
Enforceable The Fleet requirements will be added to existing minor source air permits issued 
by the Maricopa County Air Quality Department. The conditions of these air permits are federally 
enforceable. Waste Management will be requesting permit conditions in each of these permits that will 
make the continuing use of these CNG trucks or replacement trucks with equal or lower NOx emissions 
in the nonattainment area. See Appendix 8. This will make the action that Waste Management has 
taken to create these ER Cs federally enforceable. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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The methods of calculations for the ERCs are: 
Waste Management currently operates 225 refuse trucks powered by compressed natural gas 
(CNG) engines in the greater Phoenix area that collect waste and deliver it to transfer stations. 
The fleets are referred to as White Tank, San Tan, North Phoenix and Elwood. These CNG 
vehicles are powered by U.S. EPA certified 2011 to 2020 model-year Cummins 8.9·1iter engines. 
The model-year 2011 to 2015 engines were certified by Cummins to the 0.2 g/bhp-hr NOx 
standard that applies to 2010 and later model-year vehicles while the 2016 and later model-
year engines were certified by Cummins to family NOx emissions limits (FELs) of 0.02 g/bhp-hr. 
The MERC calculation methodology is based on a comparison of the CNG refuse truck emissions 
to the emissions of a diesel refuse truck of the same model year. A credit calculation is 
performed for each CNG vehicle based the vehicle's lifetime average annual mileage reported 
by Waste Management and the differential in emissions NOx between the CNG vehicle and a 
diesel-powered refuse truck with an engine of the same model-year, computed for calendar 
year 2021 derived from EPA's MOVES3.01. 
The emissions differential calculation begins with 2010 through 2020 model-year emission 
factors (in units of grams of NOx per mile of operation) for diesel and CNG refuse trucks 
obtained by running MOVES 3.01 configured for Maricopa County in calendar year 2021. Two 
adjustments were made to the MOVES 3.01 emission factors. The first was made to account for 
the fact that the engines in the 2016 and later Waste Management CNG vehicles were certified 
to a family emissions level (FEL) of 0.02 g/bhp-hr for NOx which is 10 times lower than the 
applicable emission standard of 0.20 g/bhp-hr which is assumed in MOVES3.0l.1 Therefore, 
CNG emission rates for 2016 to 2020 model-year vehicles were assumed to be one·tenth of the 
comparable diesel emission rate. 
The second adjustment was made to account for the actual load factors experienced by Waste 
Management's CNG vehicles during routine operations which is not appropriately accounted 
for in MOVES 3.01.2 More specifically, Waste Management collected engine load data using a 
Cummins engine analyzer3 from three trucks operating on actual in-use refuse routes 
representative of the three main types of refuse truck operation occurring in the Waste 
Management: 1) residential, 2) roll-off, and 3) frontload. These load factors were determined 
l Based on a review of the MOVES3 documentation related to emission factors for heavy-duty CNG trucks, it Is 
clear that the MOVES emission factors are base.d on data from 2011 and 2014 model-year vehicles certified to the 
0.20 g/bhp-hr standard which overestimates the actual emissions of the 2016 to 2020 model-year CNG trucks. See 
"Exhaust Emission Rates for Heavy-Duty Onroad Vehicles In MOVES3", EPA-420-R-20-018, November 2020, page 
197. 
2 For example, the MOVES3.0l fuel consumption values for 2011 to 2020 model-year refuse trucks are only about 
12% higher than for transit buses rather than the expected average of about 30%. See Alternative Fuels Data 
Center: Maps and Data - Average Fuel Economy by Maier Vehicle Category (energy.gov) 
3 The analyzer is lap top based unit that directly reads engine performance, monitoring data and calculate 
parameters including the engine load factor. Dave - can you provide the name of so~ware and maybe a link to a 
Cummins web page where it is described? 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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to be 40.5% for residential, 31.5% for roll-off, and 38% for front end loaders which are much 
higher than the 20 to 25% load engines experience during certification emissions testing.' 
Therefore the diesel and CNG emission rates from MOVES3.01 were scaled using the load 
factors provided by Waste Management divided by the 25% value that is the upper bound of 
the range reported from certification testing. 
The final MERC calculation for each CNG vehicle involved multiplying the weighted average 
annual milage of that type of vehicle by the emissions difference between the diesel and CNG 
emission rates. For example, the MERC value for a 2015 residential refuse truck that travels 
50,000 miles would be: 
MERC (tons/year)= 50,000 miles/year• (4.20-1.40) grams NOx/mile • (40.5/25) 
= 243,000 grams NOx/year = 0.27 tons NOx/year 
Where 4.20 and 1.40 grams NOx/mile are the MOVES3 generated NOx emission factors for 
2015 model-year diesel and CNG refuse trucks, respectively. 
While the MERC value for a 2020 front end loader refuse truck traveling 50,000 miles a year 
would be: 
MERC (tons/year)= 50,000 miles/year* (2.84-0.284) grams NOx/mile * (38/25) 
= 194,256 grams NOx/year = 0.21 tons NOx/year 
Where 2.84 grams NOx/mile is the diesel emission factor and 0.284 the assumed natural gas 
emission factor given engine certification to a 0.02 g/bhp-hr NOx FEL. 
The annual emissions reductions associated with CNG use in the individual trucks are then 
summed over all trucks to arrive at the total MERC value for the 225 trucks. This value is then 
multiplied by 0.95 in order to account for actual CNG truck operation in the Phoenix non-
attainment area based on Information provided by Waste Management indicating that 5% of 
their operation occurs outside the nonattainment area. 
4 Transit Bus load-Based Modal Emission Rate Model Development, EPA/600/R·07 /106, July 2007, page 3-2. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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Appendix B 
Proposed Permit Conditions for the Use of CNG Trash Trucks by the Waste 
Management Fleets in the Maricopa Nonattainment Area1 
Waste Management !WM) will maintain and operate a minimum of 225 CNG fueled trash trucks, 
serving the four Fleets in the greater Phoenix area. Any retired CNG truck will be replaced with 
either a new CNG truck certified at 0.02 g/bhp-hr or lower NOx emitting trash truck fueled with CNG 
or an alternative fuel, with the replacement truck counting towards this total. 
WM will conduct periodic service on each CNG truck consistent with the manufacturer's 
recommendations consisting of: 
Applicable 
Engine 
Description of Service 
-
ALL 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics, check 
fuel filter for moisture 
-
l 
ALL 
Specific inspection related to Cab, Engine, Transmission, Fuel 
l 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth, includes gas leak detection system validation 
12L Gas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. includes engine oil and lube filter replacement 
12L Gas 
Spark Plug and Ignition System Service 
ALL 
Specific Inspections related to CNG engines and fuel system, 
includes the service of the high pressure and low-pressure fuel 
filters 
[ 
9LGas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. Includes servicing high pressure and low-
pressure fuel filters, engine oil and filter replacement 
9LGas 
Spark Plug and Ignition System Service 
-
ALL 
Specific inspection related to Engine, Transmission, Axles, Body 
and Hydraulics 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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DRAFT

ALL 
Specific CNG Engine and fuel system inspection items, Engine 
valve lash inspection and adjustment service 
ALL 
Service of CNG Fuel Delivery and Leak Detection System 
ALL 
CNG Tanks and Fuel Delivery System Inspection by qualified 
Inspector 
ALL 
Annual DOT Inspection, PMI Forms have grayed sections that 
need to be filled out for this service 
WM shall maintain the following records: 
• 
Inventory of the CNG trucks used by these four Fleets 
• 
Records of the maintenance of these vehicles 
Additionally, we propose to keep records showing generally that the CNG trash trucks are being used 
in a manner consistent with the derivation of the ERCs. Without an enforceable limit. This would be 
keeping the following records: 
• 
As part of the inventory of the CNG trucks, annually provide a listing the route(s) for each 
truck with an annotation of whether the route is or is not predominantly in the 
nonattainment area. 
This would include: 
• 
Annually, WM shall demonstrate that 95% or more of the routes use by their CNG trucks 
were predominately in the nonattainment area. 
• 
If this figure is not met, WM will notify the MCAPD and explain why the usage was less than 
expected, what actions WM is taking to ensure that CNG truck use is consistent with this 
target, and the outlook for the coming year. 
'These conditions would be inserted Into the current air permits of each of the four fleets using the CNG trucks for trash 
collection. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 44 of 73
DRAFT

Refuse truck activity 2021 NOx emission factors (g/mi) 
Model year 
Gasoline 
Diesel 
CNG 
1992 
7.18 
29.66 
1993 
8.17 
29.79 
1994 
7.35 
29.75 
1995 
7.19 
28.02 
1996 
7.19 
29.88 
1997 
8.25 
29.91 
1998 
4.24 
27.19 
1999 
4.24 
21.32 
2000 
20.39 
2001 
20.43 
2002 
20.25 
2003 
1.50 
10.74 
2004 
10.73 
2005 
1.45 
10.75 
2006 
1.45 
10.76 
2007 
1.56 
7.52 
2008 
0.47 
7.29 
2009 
0.47 
7.47 
2010 
5.88 
2011 
5.16 
2012 
5.27 
2013 
0.32 
4.24 
2014 
4.20 
2015 
4.20 
2016 
4.09 
2017 
3.90 
2018 
2.84 
2019 
2.84 
2020 
2.84 
2021 
2.84 
0.02CNG 
8.30 
8.30 
8.30 
1.40 
1.40 
1.40 
1.40 
1.40 
1.40 
0.93 
0.93 
0.93 
0.93 
0.93 
0.93 
. I 
Total Credits 
Total Vehicles 
average mileage residential 
average mileage roll off 
average mileage front load 
34.14 tons 
225.00 
18068 
29577 
44463 
0.41 
CNG emissions rates for vehicles certified to O. 02 g/bhp-hr 
0.39 
FEL are assumed to be 10% of same model-year diesel 
0.28 
emission rates 
0.28 
0.28 
0.28 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 45 of 73
DRAFT

106189 
106190 
211939 
214010 
214011 
214012 
214418 
214420 
214668 
4lS982 
416403 
416404 
416S99 
416600 
4l706S 
417068 
4l76ll 
417612 
417613 
41761S 
Vehicles 
wH11e 
09/20/2018 
40.S 
01/02/2019 
40.S 
02104/2019 
40.S 
U/12/2018 
31.S 
03/18/2015 
31.S 
ll/26/2018 
31.S 
ll/30/2018 
31.S 
12/18/2018 
31.S 
09/06/2019 
31.S 
09/16/2019 
31.S 
01/17/2020 
38.0 
10/0S/2018 
38.0 
01/10/2019 
38.0 
01/1512019 
38.0 
06/24/2019 
38.0 
06/10/2019 
38.0 
09/23/2019 
38.0 
10/01/2019 
38.0 
06/22/2020 
38.0 
06/26/2020 
38.0 
06/22/2020 
38.0 
06/22/2020 
22 
35 
23 
21 
26 
82 
49 
Sl 
Sl 
S7 
SB 
68 
30 
23 
2S 
28 
14 
21 
34 
3S 
27 
56 
60 
Recent' 
l\llileag• 
Reaml 
ll8t9 o1 
Hours 
ill 
Diii& at a.- Milews• 
RecentHours ~ 
Service 
~ 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
5,764 
4,610 
4,494 
4,334 
17,187 
6,378 
6,806 
6,Sl9 
4,958 
S,010 
3,896 
7,338 
8,71S 
6,809 
5,646 
S,157 
3,730 
3,706 
2,254 
2,114 
2,277 
2,343 
Sll 
408 
437 
S09 
2,211 
l ,767 
1,851 
1,813 
1,884 
l,810 
l,974 
573 
432 
439 
513 
723 
3SO 
364 
641 
707 
l,06S 
1,178 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
04/28/2021 
S0,095 
3S,215 
3S,S71 
33,03S 
203,339 
90,829 
93,874 
91A71 
55,043 
61,839 
56,219 
153,898 
152,698 
149,911 
ll8,68S 
117,710 
81,198 
68,577 
43,978 
44,S61 
42,050 
50,559 
951.0 
847.0 
814.0 
898.0 
2233.0 
884.0 
880.0 
862.0 
600.0 
590.0 
467.0 
936.0 
839.0 
834.0 
674.0 
688.0 
S83.0 
575.0 
310.0 
306.0 
310.0 
310.0 
2.32 
2.23 
2.46 
6.12 
2.42 
2.41 
2.36 
1.64 
1.62 
1.28 
2.56 
2.30 
2.28 
l.85 
1.88 
l.60 
l.S8 
0.8S 
0.84 
0.85 
0.8S 
CUMMINS ISLG 
1977 
14,999 CUMMINS l9N 
2006 
15,754 CUMMINS l9N 
1751 
13,220 CUMMINS l9N 
2796 
32,876 CUMMINS ISLG 
2613 
36,773 CUMMINS ISLG 
2802 
38,169 CUMMINS ISLG 
2739 
37,964 CUMMINS ISLG 
2981 
32,338 CUMMINS l9N 
3064 
37,137 CUMMINS l9N 
2992 
42,397 CUMMINS l9N 
28SO 
S9,790 CUMMINS ISLG 
3781 
66,242 CUMMINS l9N 
2969 
65,416 CUMMINS l9N 
3042 
63,995 CUMMINS L9N 
2728 
62,064 CUMMINS l9N 
2322 
50,617 CUMMINS l9N 
2331 
43,300 CUMMINS l9N 
2613 
Sl,026 CUMMINS l9N 
2489 
52,310 CUMMINS l9N 
2615 
48,257 CUMMINS L9N 
2688 
S8,142 CUMMINS L9N 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
2017 
2018 
2018 
2017 
2014 
2017 
2017 
2017 
2018 
2018 
2019 
2017 
2018 
2018 
2018 
2018 
2018 
2018 
2019 
2019 
2019 
2019 
CNG 
NOx 
Diesel 
(g/ mile 
NOx 
(g/mile) 
0.63~ 
0.46~ 
0.46~ 
0.63 _.§B_ 
1.76~ 
0.49~ 
0.49~ 
0.49~ 
0.36~ 
0.36~ 
0.36~ 
0.59~ 
0.43~ 
0.43~ 
0.43~ 
0.43~ 
0 .43~ 
0.43 ~ 
0 .43~ 
0.43~ 
0.43~ 
0.43~ 
Total 
Annual NOx Truck Route Percentage 
Non-
EmissionsR within Non- within Non· 
Attainm 
eduction 
attainment attainment 
ent Area 
(tons) 
Area 
Area 
Miles 
0.12 Yes 
100% 
19031 
0.07 Yes 
100% 
14999 
0.07 Yes 
100% 
15754 
0.08 Yes 
0.13 Yes 
0.18 Yes 
0.19 Yes 
0.18 Yes 
0.11 Yes 
0.1.3 Yes 
0.15 Yes 
0.35 Yes 
0.28 Yes 
0.28 Yes 
0.27 Yes 
0.27 Yes 
0.22 Yes 
0.19 Yes 
0.22 Yes 
0.22 Yes 
0.21 Yes 
0.25 Yes 
4.139S 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
100% 
lOO"h 
100% 
100".< 
100".< 
85% 
100"-' 
100% 
Total NAA = 
Tota! Miles = 
% fn NAA= 
13220 
32876 
36773 
38169 
37964 
32338 
37137 
42397 
S9790 
66242 
6S4l6 
63995 
62064 
S06l7 
43300 
Sl026 
44486 
48257 
58142 
933994 
941818 
99.17% 
average an 
Residential 
19,031 
14,999 
15,7S4 
13,220 
0 
0 
0 
lS,751 
Roll off 
0 
0 
32,876 
36,773 
38,169 
37,964 
32,338 
37,137 
42,397 
0 
Front 
Load 
0 
59,790 
66,242 
6S,416 
63,995 
62,064 
50,617 
43,300 
Sl,026 
44,486 
48,2S7 
58,142 
36,808 
5S,758 
7 
11 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 46 of 73
DRAFT

August 13, 2021 
Daniel Czecholinski 
Philip A. McNeely, R.G . Director 
Phone: 602-506-6701 
Email: Phllip.Mc Neely@maricopa.gov 
Maricopa.gov/AG 
CleanAirMakeMore.com 
Air Quality Division Director 
Arizona Department of Envirorunental Quality 
1110 West Washington Street 
Phoenix, Arizona 85007 
RE: 
Emissions Reduction Certification (ERC) 
Waste Management of Arizona, Inc. (Deer Valley Transfer Station) - MCAQD Facility 
F000443 
Dear Mr. Czecholinski: 
The Maricopa County Air Quality Department (MCAQD) has verified the credit and number of 
tons of actual emissions that have been reduced by replacing diesel-fueled solid waste collection 
trncks with CNG-fueled trucks based at the Waste Management Deer Valley Transfer Station 
located at 2120 West Adobe Drive in Phoenix, Arizona. In accordance with the Arizona 
Administrative Code, the following actual emissions have been verified for use as certified emission 
credits: 
Nitrogen Oxides (NOx): 11.2 tons/year 
Per Ma1-icopa County Rule 204 §301 and AAC Rule 18-2-1205.A, the Control Officer may certify an 
emission credit if the credit is verified and determined by all of the following: 
1. A reduction in actual emissions that occurred after August 17, 1999. 
The facili!J has replaced 74 diesel-ji1eled solid JJJaste collection tr'llcks with 74 CNG-ji1eled solid waste collection 
tmcks. Actt1al NOx emissions from CNG tr11cks are 65 - 90% less than diesel-fi1eled tn1cks depending on model 
yem: 
2. A quantifiable reduction in actual emissions. 
. 
The applicant st1bmitted calct1lations using EPA 's Motor Vehicle Emissions Simulator sojtJJJare (v3.01) to qt1antify 
emissiom from both the old and ne1JJ tn1cks. Actual vehicle miles traveled were also provided to define the actual 
emissions. Emissio11 baseline from the diesel-fi1eled tmcks has been calculated over a series of years (i.e., 2013-2021) 
depending on when the act11al conversion occt11red. 
3. A permanent reduction in actual emissions. 
The trncks removed from service mt1st be disabled or moved outside qf the Mmicopa Coim!J non-attainment area as 
required in the site air q11ali!J permit P0008316. The permit also reqttires that mry fitt11re replacement of tntcks 
mttst be eqt1al to or loJJJer emitting than the trttck being replaced These enforceable pe1mit conditions make the 
emission reductions permanent. 
Return to Table of Contents
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 47 of 73
DRAFT

Daniel Czecholinski 
Date: August 13, 2021 
Page 2of 2 
4. An enforceable reduction in actual emissions. 
The air q11ali!J permit (i.e., P0008316) for the jacili!J inclttdes provisions reqttiting removal of the diesel-fired tmcks 
that were replaced ry the CNG-jired trt1cks be removed from the Jvlaricopa Cotmry ozone non-attainment area. 
Additional co11ditions in the permit require monitoting and record keeping to flnther make the redttctions enforceable. 
5. A sutplus reduction in actual emissions occurring in addition to any other required emission 
reduction. 
The type of trt1cks that formed the basis for the emissio11 credit have been listed i11 the 2017 Ozone Pe1iodic Emission 
Inventory (PEI) and previotts PEis as dieselfueled vehicles. These invent01ies are ttsed for regional planning ry the 
Mmicopa Association of Governments. No emission reductions JJJ~t-e 1-eqt1i1-ed at the sottrce either through planning or 
1-egtt!ation that wottld mlttce the cettified mdits. Therefot-e, the lower emitting CNG-ji1-ed tr11cks m-e smplt1s to the 
inventory. Conseqttent!J, the table helo1JJ is a summary of the emission mdit calcttlation. 
Pollutant 
Baseline Emissions 
Ongoing Emissions 
Certified Credits 
(tons/year) 
(tons/year) 
(tons/year) 
NOx 
15.2 
4.0 
11.2 
Based on the information submitted by the source and verified as described above, the MCAQD 
certifies emission reduction credits in the amount of 11.2 tons of NOx. 
This notification is being provided to the Arizona Department of Environmental Quality in the 
event the applicant submits the certified ERCs for deposit in the Arizona Emissions Bank. 
If you have any questions or need additional information, please contact Richard Sumner of my staff 
at Richard.sumner@maricopa.gov or 602-506-1842. 
Sincerely, 
~c!i~G~ 
Director 
Maricopa County Air Quality Department 
Cc: 
David Bearden, Waste Management of Arizona, Inc. 
Attachments 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 48 of 73
DRAFT

Emission Reduction Credit 
Evaluation 
Source: Waste Management (Deer Valley Transfer Station) 
Facility ID: F000443 
Permit: P0008316 
Date: August 11, 2021 
Project Description: Replace diesel-powered solid waste collection trucks with CNG-powered trucks. 
Baseline Emissions: CNG trucks were brought into the fleet over a number of years. Therefore, the baseline is the diesel truck that was 
replaced by the CNG truck. For example, the NOx emission rate from the diesel truck was 5.29 g/mile and CNG truck #212441 
emission rate put into service in 2016 is 1.76 g/mile. (Emission rates based on EPA MOVES 3.01.) The reduction is the difference 
between the baseline diesel truck emission rate and the CNG truck emission rate. Credits are reduced by 2.5% to allow for 
mileage outside of the non-attainment area. Annual mileage used in the calculation is 97.5% of actual average mileage for each 
individual truck. The North Yard Fleet is associated with the Deer Valley Transfer Station. 
Example Calculation (1 Truck): (5.29 g/mile - 1.76 g/mile) x 20,506 miles/year x 0.975 = 69,028 g/yr = 0.078 tons/year 
Total NOx from the attached spreadsheet for 74 trucks= 11.5167 tons (uncorrected for outside non attainment area) 
Total Creditable NOx (after correction)= 11.5167 tons (97.5/99.87) 
Creditable NOx reduction= 11.2 tons 
Prepared by Richard Sumner 
August 11, 2021 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 49 of 73
DRAFT

Return completed form lo 
Motlcopo Counly Air Quollly Department 
3800 r'lotlh Cenlrot Ave Suite 1400. Phoenix 
Phone: 602.506.6010 Fm. 602.372.0587 
AQPermits ii moil.moricoµo.gov 
3800 Morlh Cenlrol Ave. Suire 1.100. Phoe ni~. AZ 85012 or 501 Morlh ~4th SI. Suile 200 Phoe ni~ AZ 85008. 
Emission Reduction Credit Application 
Faciltt)' Information 
1. Facilirr Name: 
\X1aste !ll:magcmcnt of Arizona, Inc. 
222 S. l\lill .-\vc., Swtc 333 
2. Facility Address: 
City; 
Tempe 
Sta tc: .-\rizona 
Zip Code: 85281 
3. Permit#: 
040086/FOO 16-16 (\Vhitc Tnnks)GI 01.\002.17 /Foo\ C.115 ( <;;11 .. ri"'Atl) • 0tit>~4 3B/f DC>Ol1Y 3 { De.:il. v'kl.l:'.-V) 
Contact Information 
. 
I 
4. Is the facility information the same as the conmct information? 
YesO 
No 18] 
5. Contacr Name: Dave: Bearden 
222 S. l\1111 .-\ ve., Suuc 333 
6. Conrnct .-\cldrcss: 
City: 
Tempe 
State:: 
Ariwna 
Zip Code: 85281 
7. Pollutant (Complete a separate sheet for each pollutant): 
NOx 
8. Date: 
Jun 28, 2021 
9. List o f the equipment/process involved with the emission rcduc1ion: 
Solid \Vnste Collection Trucks converted from diesel fuel to compressed natuml gas 
I Add ~ Rnw I 
Dclctc n RD\I 
10. Describe how the emission reduction will be accomplished: 
Wash: .l\l:magc:mc:nr has bc:c:n converting the majority of their solid waste: collection truck Oeets in the Phocnix arca from diesel fuel to 
Compressed Narum! G:is (CNG), :ind is appl)i ng foe NOx Emissions Reducuon Credits (ERCs) from the voluntarr conversion o f trucks 
from diesel to CNG oper-.1.tion. The trucks ace associated with four collccrion fleets operate nt three transfer stauons m the no n-
arrainment area. Attachment A pro\ides qualifying criteria, method of calcul:111ons and fleet calculations which have been met in the 
generation of these ERCs. 
11. Estimated date of emission reduction: vnrious sec attachment :\ 
12. Describe how the reduction will be made pc:cmancnt: 
13. Baseline period (two calendar yeats): 
2020 
2021 
If this is not the most recent rwo calendat years, provide a detailed explanation of why the most recent years were not used. 
The requirements related to the ERCs will be included with permit modification for the transfer st;itions White Tanks, Deer Vallc:y and 
San Tan. The proposed requirements relate to 1) \'\11\[ will continue to purchase CNG trucks or alternative trucks with at least o r better 
NO.x emissions compared to the current Cummins Engine, 2) perform routine engine maintenance and 3) maintain :ir lc01st 22 trucks 
operating 95% or more o f their rime in the Non·:llt:tlnmcnt Area. 
14. Identify the method 1h:1t is proposed to calculate the baseline emissions and how that method is being used. (Examples: material 
balance, perfocmance test data, continuous monitor, emission factors, etc.) 
Sec Attachment A - Criteria, Methods of Calculations and Fleet Calculations 
Rcvlml 13Marl9 
Page l of 2 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 50 of 73
DRAFT

l'j t 
f ·l.... 
Maricopa County Air Quality Oepartme 11t 
3il ·c 
.~ 1· JI 
f "•. n 
o\ 
I• J 
~ 
( ' ;:; ._.,._ =--, .JI 
t_. 
it.Jo 
15. Lisr the seasonal emission rate on a quarter!}' basis from the operation/ process that provided the em1ss1on reduction. 
Bnschnc Year One 
'.!020 
(.,21: 
Q2: 
Q3: 
Q4: 
Baschne Yl-ar T\\'O 
2021 
QI: 
Q1: 
Q3: 
Q4· 
16. Calculation of baseltnc emissions m tons per )·car: 
,-\ List :mr emission factors with their source (include umts): 
Sec .-\uachmcnt _-\ 
I Add 3 Row IDclctc a Ro\L 
B, List assumptions made to perform the c,1lcubuons: 
Sec ;\trachmcnt .-\ 
C. Show snmplc of c:1lcubt1ons made to ,·cnfv cm1ss1on rcducuon· 
Sec :\ttachmcnt A 
D . Baseline emission mtc (tons per year): 
3Y,14 
E. Provide n list of documents attnched to subsranrfate the basis for tin: calculanons (e.g., safety data sheets, proct:ss records, 
matenal use records, monttonng rt:cords, etc.). 
Sec .-\ttachmcnt .-\ 
I 1\dd a RolV I Delete 3 Row 
F. Comments or :u.ld1uonal mformauon: 
17. Do you plan to register the certified crcdas m the .-\nzona Em1ss1ons Bank admimstcred by the . .\rizona Department of 
Enrnonmenral Quality (.\DEQ)? [{)Yes 
0
No 
If )'CS, there 1s a reg1str:1t1on fee of $'.!00 payable to .-\DEQ. For more 
1nform:1uon about the :\rizona Em1ss1ons Bank please re,·1ew .-\nzona .-\dminismmve Code Title 18, Chap1cr 2, :\mcle 12. 
18. l ecru!)· that the statements and mformation prm·idcd herein arc true, accurate, and complete based on mforrnaoon and bchcf formed 
afrcr m1sonable inquiry. 
-
Signature of owner or rcspons1blc official: I ~~llAlJ.... 
I 
Trpt: or pnnc n:ime and uric : I 
o~ ~(tf~ 
I Dare: I rt'j13llot~ 
lk l'i~cJ 13.\larl 9 
l'~~o.: '.! uf '.! 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 51 of 73
DRAFT

Attachment A - Criteria, Methods of Calculations and Fleet Calculations 
The five ERC qualifying criteria are being met in the generation of these ERCs: 
• 
Real Each of the CNG trucks are designed to operate solely on natural gas. There is extensive 
evidence, including engine certification testing results, to show that these trucks emit less NOx on a per 
mile basis that their diesel counter parts. In quantifying the ERCs, actual miles traveled in the 
nonattalnment area are combined with actual emissions rates using standardize EPA modeling methods 
applicable to these operating conditions. While these new CNG trucks are replacing older diesel trucks 
with much higher NOx emissions, to assure that the reductions are real, the analysis is based on the 
emissions of the CNG trash truck in comparison to a new diesel trash truck of the same vintage. 
• 
Quantifiable As described in detail in this Appendix A, the emissions reduction resulting from 
the voluntary replacement of diesel trash collection trucks with lower NOx emitting CNG trucks is being 
quantified using the EPA MOVES3.01, reflecting the miles traveled by the CNG trucks within the 
nonattainment area. The model has been adjusted to reflect actual use patterns of the Waste 
Management trash trucks and the difference in emissions between diesel and CNG in the year each CNG 
truck was or will be placed into service. 
• 
Surplus The conversion to CNG trash truck fleets is being carried out on a voluntary basis. It is 
not being done to comply with any current or anticipated regulatory requirement. We understand that 
trash truck is the region appear as diesel powered in the Regional Ozone Modeling over the last decade 
including the latest (2017) Regional emissions inventory. 
• 
Permanent Waste Management is proposing to make these reductions permanent by keeping 
these CNG trucks in service in the nonattainment area and replacing them with CNG trucks or trucks 
with equal or lower NOx emissions whenever one is removed from service. Proposed permit conditions 
that would be added to the air permit of the Fleet location, reflecting this commitment, are presented in 
Appendix B. 
• 
Enforceable The Fleet requirements will be added to existing minor source air permits issued 
by the Maricopa County Air Quality Department. The conditions of these air permits are federally 
enforceable. Waste Management will be requesting permit conditions in each of these permits that will 
make the continuing use of these CNG trucks or replacement trucks with equal or lower NOx emissions 
in the nonattainment area. See Appendix B. This will make the action that Waste Management has 
taken to create these ERCs federally enforceable. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 52 of 73
DRAFT

The methods of calculations for the ERCs are: 
Waste Management currently operates 225 refuse trucks powered by compressed natural gas 
(CNG) engines in the greater Phoenix area that collect waste and deliver it to transfer stations. 
The fleets are referred to as White Tank, San Tan, North Phoenix and Elwood. These CNG 
vehicles are powered by U.S. EPA certified 2011 to 2020 model-year Cummins 8.9-llter engines. 
The model-year 2011 to 2015 engines were certified by Cummins to the 0.2 g/bhp-hr NOx 
standard that applies to 2010 and later model-year vehicles while the 2016 and later model-
year engines were certified by Cummins to family NOx emissions limits (FELs) of 0.02 g/bhp-hr. 
The MERC calculation methodology is based on a comparison of the CNG refuse truck emissions 
to the emissions of a diesel refuse truck of the same model year. A credit calculation is 
performed for each CNG vehicle based the vehicle's lifetime average annual mileage reported 
by Waste Management and the differential in emissions NOx between the CNG vehicle and a 
diesel-powered refuse truck with an engine of the same model-year, computed for calendar 
year 2021 derived from EPA's MOVES3.0l. 
The emissions differential calculation begins with 2010 through 2020 model-year emission 
factors (in units of grams of NOx per mile of operation) for diesel and CNG refuse trucks 
obtained by running MOVES 3.01 configured for Maricopa County in calendar year 2021. Two 
adjustments were made to the MOVES 3.01 emission factors. The first was made to account for 
the fact that the engines in the 2016 and later Waste Management CNG vehicles were certified 
to a family emissions level (FEL) of 0.02 g/bhp-hr for NOx which is 10 times lower than the 
applicable emission standard of 0.20 g/bhp-hr which is assumed In MOVES3.01.1 Therefore, 
CNG emission rates for 2016 to 2020 model-year vehicles were assumed to be one-tenth of the 
comparable diesel emission rate. 
The second adjustment was made to account for the actual load factors experienced by Waste 
Management's CNG vehicles during routine operations which is not appropriately accounted 
for in MOVES 3.01.2 More specifically, Waste Management collected engine load data using a 
Cummins engine analyzer3 from three trucks operating on actual in-use refuse routes 
representative of the three main types of refuse truck operation occurring in the Waste 
Management: 1) residential, 2) roll-off, and 3) frontload. These load factors were determined 
1 Based on a review of the MOVES3 documentation related to emission factors for heavy-duty CNG trucks, It Is 
clear that the MOVES emission factors are based on data from 2011 and 2014 model-year vehicles certified to the 
0.20 g/bhp-hr standard which overestimates the actual emissions of the 2016 to 2020 model-year CNG trucks. See 
"Exhaust Emission Rates for Heavy-Duty Onroad Vehicles In MOVES3", EPA-420-R-20-018, November 2020, page 
197. 
2 For example, the MOVES3.0l fuel consumption values for 2011 to 2020 model-year refuse trucks are only about 
12% higher than for transit buses rather than the expected average of about 30%. See Alternative Fuels Data 
Center: Maps and Data - Average Fuel Economy by Malor Vehicle Category (energy.gov) 
3 The analyzer is lap top based unit that directly reads engine performance, monitoring data and calculate 
parameters including the engine load factor. Dave - can you provide the name of software and maybe a link to a 
Cummins web page where it is described? 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 53 of 73
DRAFT

to be 40.5% for residential, 31.5% for roll-off, and 38% for front end loaders which are much 
higher than the 20 to 25% load engines experience during certification emissions testing.' 
Therefore the diesel and CNG emission rates from MOVES3.01 were scaled using the load 
factors provided by Waste Management divided by the 25% value that is the upper bound of 
the range reported from certification testing. 
The final MERC calculation for each CNG vehicle involved multiplying the· weighted average 
annual miiage of that type of vehicle by the emissions difference between the diesel and CNG 
emission rates. For example, the MERC value for a 2015 residential refuse truck that travels 
50,000 miles would be: 
MERC (tons/year)= 50,000 miles/year• (4.20-1.40) grams NOx/mile * (40.5/25) 
= 243,000 grams NOx/year = 0.27 tons NOx/year 
Where 4.20 and 1.40 grams NOx/mile are the MOVES3 generated NOx emission factors for 
2015 model-year diesel and CNG refuse trucks, respectively. 
While the MERC value for a 2020 front end loader refuse truck traveling 50,000 miles a year 
would be: 
MERC (tons/year) = 50,000 miles/year • (2.84- 0.284) grams NOx/mile * (38/25) 
= 194,256 grams NOx/year = 0.21 tons NOx/year 
Where 2.84 grams NOx/mile is the diesel emission factor and 0.284 the assumed natural gas 
emission factor given engine certification to a 0.02 g/bhp-hr NOx FEL. 
The annual emissions reductions associated with CNG use in the individual trucks are then 
summed over all trucks to arrive at the total MERC value for the 225 trucks. This value is then 
multiplied by 0.95 in order to account for actual CNG truck operation in the Phoenix non-
attainment area based on information provided by Waste Management indicating that 5% of 
their operation occurs outside the nonattainment area. 
4 Transit Bus Load-Bas.d Modal Emission Rate Model Development, EPA/600/R-07 /106, July 2007, page 3-2. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 54 of 73
DRAFT

Appendix B 
Proposed Permit Conditions for the Use of CNG Trash Trucks by the Waste 
Management Fleets in the Maricopa Nonattainment Area1 
Waste Management !WM) will maintain and operate a minimum of 225 CNG fueled trash trucks, 
serving the four Fleets in the greater Phoenix area. Any retired CNG truck will be replaced with 
either a new CNG truck certified at 0.02 g/bhp-hr or lower NOx emitting trash truck fueled with CNG 
or an alternative fuel, with the replacement truck counting towards this total. 
WM will conduct periodic service on each CNG truck consistent with the manufacturer's 
recommendations consisting of: 
Applicable 
Engine 
Description of Service 
-
ALL 
Specific Inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics, check 
fuel filter for moisture 
" 
I 
ALL 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in"depth, includes gas leak detection system validation 
12L Gas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. Includes engine oil and lube filter replacement 
12L Gas 
Spark Plug and Ignition System Service 
ALL 
Specific Inspections related to CNG engines and fuel system, 
includes the service of the high pressure and low-pressure fuel 
filters 
9LGas 
Specific inspection related to Cab, Engine, Transmission, Fuel 
System, Steering System and Axles, Body and Hydraulics but 
more in-depth. Includes servicing high pressure and low-
pressure fuel filters, engine oil and filter replacement 
9LGas 
Spark Plug and Ignition System Service 
-· ALL 
Specific inspection related to Engine, Transmission, Axles, Body 
and Hydraulics 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 55 of 73
DRAFT

ALL 
Specific CNG Engine and fuel system inspection items, Engine 
valve lash inspection and adjustment service 
ALL 
Service of CNG Fuel Delivery and Leak Detection System 
ALL 
CNG Tanks and Fuel Delivery System Inspection by qualified 
Inspector 
ALL 
Annual DOT Inspection, PMI Forms have grayed sections that 
need to be filled out for this service 
WM shall maintain the following records: 
• 
Inventory of the CNG trucks used by these four Fleets 
• 
Records of the maintenance of these vehicles 
Additionally, we propose to keep records showing generally that the CNG trash trucks are being used 
in a manner consistent with the derivation of the ERCs. Without an enforceable limit. This would be 
keeping the following records: 
• 
As part of the inventory of the CNG trucks, annually provide a listing the route(s) for each 
truck with an annotation of whether the route is or is not predominantly in the 
nonattainment area. 
This would include: 
• 
Annually, WM shall demonstrate that 95% or more of the routes use by their CNG trucks 
were predominately in the nonattainment area. 
• 
If this figure is not met, WM will notify the MCAPD and explain why the usage was less than 
expected, what actions WM is taking to ensure that CNG truck use is consistent with this 
target, and the outlook for the coming year. 
'These conditions would be inserted Into the current air permits of each of the four fleets using the CNG trucks for trash 
collection. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 56 of 73
DRAFT

Refuse truck activity 2021 NOx emission factors (g/mi) 
Model year 
Gasoline 
Diesel 
CNG 
1992 
7.18 
29.66 
1993 
8.17 
29.79 
1994 
7.35 
29.75 
1995 
7.19 
28.02 
1996 
7.19 
29.88 
1997 
8.25 
29.91 
1998 
4.24 
27.19 
1999 
4.24 
21.32 
2000 
20.39 
2001 
20.43 
2002 
20.25 
2003 
1.50 
10.74 
2004 
10.73 
2005 
1.45 
10.75 
2006 
1.45 
10.76 
2007 
1.56 
7.52 
2008 
0.47 
7.29 
2009 
0.47 
7.47 
2010 
5.88 
2011 
5.16 
2012 
5.27 
2013 
0.32 
4.24 
2014 
4.20 
2015 
4.20 
2016 
4.09 
2017 
3.90 
2018 
2.84 
2019 
2.84 
2020 
2.84 
2021 
2.84 
0.02 CNG 
8.30 
8.30 
8.30 
1.40 
1.40 
1.40 
1.40 
1.40 
1.40 
0.93 
0.93 
0.93 
0.93 
0.93 
0.93 
Total Credits 
Total Vehicles 
average mileage residential 
average mileage roll off 
average mileage front load 
34.14 tons 
225.00 
18068 
29577 
44463 
0.41 
CNG emissions rotes for vehicles certified to 0. 02 g/bhp-hr 
0.39 
FEL are assumed to be 10% of same model-year diesel 
0.28 
emission rates 
0.28 
0.28 
0.28 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
Page 57 of 73
DRAFT

104474 
10C4?5 
105290 
105291 
106100 
106101 
l5l050 
211459 
211465 
2114!12 
211493 
211784 
211785 
211780 
211781 
211788 
211189 
211190 
211916 
211971 
212219 
212220 
212;1.21 
212222 
2U437 
212438 
212439 
212440 
212441 
212442 
212940 
212941 
212942 
2!-C013 
21~14 
214279 
214280 
2l44l3 
21.C..:1.( 
2.1.(.(:5 
21«!6 
214417 
214419 
21523.S 
215239 
215240 
2154'4 
215465 
215466 
3Dl15 
36)115 
414040 
4l40i'l 
414072 
414083 
414089 
414371 
414372 
41073 
414374 
41A37S 
414547 
414653 
414995 
4149% 
414997 
414998 
415'95 
415996 
416601 
415602 
416603 
411066 
417067 
ToUI 
40,5 12/18/2013 
40.S 1.l/18/2013 
40.5 11/24/2015 
40.5 U/OS/2015 
40.5 11/0l/2018 
40.5 09/24/2018 
40.5 0!/15/2018 
31.5 12/18/2013 
31.5 05/13/2013 
31..S 05/13/2013 
31..S OC/22/2013 
31.5 01/01/201.5 
]l.5 01/10/2015 
31..S 11/10/2014 
31.5 0 1/01/2015 
31..5 02/01/2015 
31..S 02/01/2015 
ll.5 02/01/2015 
31.5 02/27/2015 
31.5 01/04/2015 
31.5 06/24/2015 
31.5 10/15/2015 
31.S 09/10/2015 
31.S 
09/~/2015 
31.S 11/02/2015 
lt.S 12/04/201S 
"31.5 12/23/2015 
31.S 01/04/2016 
31.S 01/08/2016 
31.5 OlJU/2016 
.u.5 ovao(2011 
31.5 02/09/2017 
31.S 03/15/2017 
31.5 02/04/2019 
31.S 12/11/2018 
n.S 01/2-4/2019 
31.5 01/28/2019 
31.5 07/01/201.9 
31.5 08/09/2019 
31.5 07/01/2019 
31.S 07/15/201.9 
ll.S 08/09/2019 
ll.5 07/22/2019 
ll.S 06/03/2020 
:11.5 06/29/2020 
31.S 06/lS/2020 
ll.S 11/11/2020 
31.5 12/30/2020 
31.5 ll/11/2020 
-40.S 03/15/2012 
40.S 03/lS/2012 
lS,0 12/lS/2013 
38.0 ll/30/2013 
38.C ll/12/20l3 
38.0 12/10/2013 
38.0 11/12/2013 
38.0 03/13/2015 
38,0 03/U/2015 
38.0 03/09/2015 
38.0 03/23/2015 
38.0 03/13/2015 
38.0 04/ll/2016 
38.0 09/21/2015 
.38.0 02/22/2016 
.!8.0 03/28/2016 
.33.0 03/01/2016 
38.0 02/01/2016 
38.0 08./.31/2018 
38.0 09/l7/20t8 
3M 04/26/2019 
38.0 03/05/2019 
38.0 04/11/2019 
38.0 10/02/2019 
38.0 11/0C/2019 
11 05/13/2021 
12 05/13/2021 
66 05/13/202.l 
&4 
OS/13/2021 
247 
05/13/2021 
45 
05/13/2021 
40 05/13/2021 
71 
05/1.3/2021 
68 05/13/2021 
70 OS/U/2021 
78 
05/13/2021 
73 
05/13/2021 
124 
OS/13/2021 
66 05/13/2021 
6l 05/13/2021 
54 
OS/13/2021 
86 05/13/2021 
64 
05/13/2021 
101 
OS/13/2021 
84 
OS/lJ/2021 
68 
05/13/2021 
55 
OS/lJ/20lt 
&3 
OS/U/2021 
SS 
OS/U/2021 
90 
05/13/2021 
61 
05/13/2021 
82 
05/13/2021 
Sl OS/ll/;i'.021 
75 
OS/U/2021 
123 
OS/U/2021 
&9 
05/11/2021 
62 
05/13/2021 
57 05/13/2021 
64 
05/13/2021 
99 
05/13/202-1 
63 05/U/2021 
74 
05/13/202l 
49 
05/13/2021 
48 
05/13/ 2021 
so 
05/13/2021 
67 
OS/13/2021 
45 
05/13/2021 
S5 
OS/13/2021 
15 
05/13/2021 
49 
05/13/2021 
46 
05/13/2021 
46 
05/1.3/2021 
Sl 
05/13/20l1 
46 
05/13/2021 
29 
05/U/2021 
23 
05/13/2021. 
Sl 
05/13/2021. 
61 
05/13/2021 
16 
OS/13/2021 
21 
05/13/2021 
19 
OS/13/2021 
40 
05/13/202l 
33 
OS/13/2021 
29 
05/13/2021 
31 
05/13/2021 
34 
05/13/2021 
39 
05/13(2021 
35 
05/13/2021 
31 
05/1.3/2021 
35 
05/13/2021 
48 
OS/13/2021 
31 
05/13/2021 
38 
05/13/2021 
34 
OS/13/2021 
24 
05/13/2021 
u 
05/13/1021 
29 
05/13/2021 
21 
05/lJ/2021 
28 
05/13/2021 
15,433 
14,650 
12,744 
12,467 
5,5$8 
S.605 
6,391 
19,320 
19,2&7 
20,007 
19,650 
17,1 21 
l7,S20 
17,311 
16,840 
17,996 
16,866 
17,464 
17,346 
16,207 
13,920 
14,896 
14,828 
15,119 
lS,241 
14,933 
15,012 
!4,120 
1.:,290 
13,~6 
11,712 
10.457 
10,9:t0 
5,600 
6,616 
5,567 
6.232 
4,093 
4,591 
4,6e.9 
4,960 
4,411 
4,890 
2.4U 
2,411 
2,261 
1,011 
m 
l,081 
6,828 
8,283 
16,059 
18,500 
19,244 
19,024 
16,586 
U,264 
13,741 
12,960 
13,741 
13,860 
12,287 
14,101 
14,659 
12,0lS 
11.876 
13,598 
5.nsi 
S,93S 
!i,1.517 
4,533 
4,445 
3.040 
U i16 
2246 05/13/2021 
2561 OS/13/2021 
1804 
05/13/2021 
1382 05/13/2021 
o OS/13/2021 
0 
OS/13/2021 
1700 OS/13/2021 
OS/13/2021 
OS/13/2021 
458 
05/13/2021 
0 
05/13/2021 
05/13/2021 
05/13/2021 
05/13/202J 
05/13/2021 
0 
05/13/2021 
0 
05/11/2021 
0 
05/13/2021 
OS/13/2021 
05/13/2021 
0 
05/13/2021 
1923 
05/13/2021 
0 
OS/U/2021 
2607 05/U/2021 
1845 05/13/2021 
2150 05/13/2021 
2102 
05/13/2021 
1795 05/13/2021 
1745 
OS/13/2021 
1795 
05/13/2021 
1822 05/13/2021 
1705 
05/13/2021 
1711 
05/13/2021 
0 
05/13/2021 
136 OS/13/2021 
0 
05/13/2021 
179 
05/13/2021 
0 
05/13/2021 
0 
05/13/2021 
O OS/13/2021 
93S OS/13/2021 
0 
05/13/2021 
0 
OS/13/2021 
4!)4 
05/13/2021 
400 05/13/2021 
408 05/13/2021 
508 
05/13/2021 
424 
05/13/2021 
395 05/19/2021 
.:806 OS/13/2021 
0 
05/13/2021 
05/13{2021 
OS/13/2021 
686 05/13/2021 
2225 OS/13/2021 
1S36 05/13/2021 
0 
OS/ll/2021 
0 
05/ 13/2021 
0 
05/13/2021 
0 
05/13/2021 
0 
OS/ 13/2021 
1822 05/13/2021 
4016 05/13/2021 
1785 05/13/2021 
1821 
0<;/13/2021 
1670 05/13/2021 
1855 05/13/2021 
1791 
OS/13/2021 
1946 05/13/2021 
0 
05/13/2021 
05/13/2021 
OS/13/2021 
0 
05/13/2021 
Sl? 05/13/2021 
186,606 
178,345 
121,255 
149,148 
58,205 
65,117 
64,on 
325,5.llS 
212.494 
221,960 
234,789 
175,04S 
220,973 
210.227 
189,119 
220,131 
206,561 
230,994 
173,863 
16',839 
194,561 
164,705 
llS,800 
177,252 
197,785 
163,771 
192,761 
132,637 
lll,410 
158,881 
111,643 
145,518 
142,173 
65.692 
52,530 
66,323 
79,1<1 
45,767 
38,455 
60,859 
49,284 
52,225 
67,473 
27,278 
35,224 
15,041 
15,062 
12,401 
16,754 
65,142 
87,537 
332,208 
367,190 
191,171 
335,3&4 
333,061 
266,443 
299,186 
271,242 
291,585 
252,096 
24,,523 
231,220 
287,330 
241,SOO 
232,652 
282,000 
116.229 
130,765 
US,541 
99,347 
80,586 
60,437 
28.218 
2701.0 
2703.0 
1997.0 
1,86.0 
924.0 
962.0 
1002.0 
2703.0 
2922.0 
2922.0 
2943.0 
2324.0 
2315.0 
2346.0 
2324.0 
2293.0 
n93.0 
2293.0 
2267.0 
2321.0 
2089.0 
2037.0 
2072.0 
2052.0 
201.9.0 
1987.0 
1968.0 
l.956.0 
1952.0 
l.947.0 
1564.0 
1554.0 
1520.0 
829.0 
878.0 
S40.0 
836.0 
682.0 
643.0 
682.0 
668.0 
643.0 
661.0 
344.0 
318.0 
ll2.0 
183.0 
134.0 
183.0 
3146.0 
3346.0 
2703.0 
2721.0 
2739.0 
2711.0 
2739.0 
22S3.0 
22S3.0 
22S7,0 
2243.0 
2:ZS3.0 
18S8.o 
2061.0 
1907.0 
1872.0 
1899.0 
192!.0 
986.0 
969.0 
748,0 
tco.o 
163.0 
589.0 
556,0 
7.41 
1.41 
5.41 
5.44 
2.53 
"" 
2.7S 
1.41 
8.0l 
8.01 
.. ,. 
6.37 
6.34 
6.43 
6.37 
·~· 
6.28 
6.28 
~" 
6.36 
S.72 
S.58 .... 
5.52 
5.53 
5.44 
5.39 
5.36 
5.35 
5,33 
4.28 
4,26 
4.16 
2.27 
2..:1 
2.30 
2.2' 
1.87 
l.16 
1.87 
l .83 
l.76 
l.81 
0"4 
0~1 
0'1 
0.50 
0.37 
0.50 
9.17 
9.17 
7.41 ,,, 
1.SO 
1A3 
1.50 
6.17 
6.17 
6.18 
6.15 
6.11 
5.09 
5.6S 
5.22 
S.13 
S.20 
5.28 
2.10 
2.6S 
2.05 
2.19 
2.1)9 
1.61 
"" 
2074 
24,MS CUMMINS ISlG 
1977 
23,737 CUMMINS IStG 
2317 
21,833 CUMM1NSISlG 
2280 
27,066 CUMMINS 15lG 
2098 
22,992 CUMMINS ISLG 
2110 
24,707 CUMMINS ISLG 
2313 
22,720 CUMMINS ISLG 
2599 
44,095 CUMMINS 15LG 
2398 
26,544 CUMMINS ISlG 
7490 
27.669 CUMMINS 15lG 
2427 
2.9,119 CUMMINS ISLG 
2678 
27,649 CUMMINS ISlG 
2743 
34,840 CUMMI NS tslG 
26.83 
32,708 CUMMINS ISLG 
2635 
29,702 CUMMINS tsLG 
2855 
35,040 CUMMINS ISLG 
2671 
32,881 CUMMINS ISLG 
2170 
36,170 CUMMINS tsLG 
2777 
27,993 CUMMINS ISlG 
2535 
25,923 CUMMINS tSlG 
2420 
33,995 CUMMINS ISlG 
2659 
29,168 C\JMMINS ISt.G 
2601 
20,399 CUMMINS !stG 
2680 
31,065 CUMMINS ISlG 
273:9 
35,423 CUMMINS ISlG 
2732 
29,689 CUMMtNS !st.G 
2780 
35,361 CUMMINS ISl.G 
2623 
24,416 CUMMINS !51..G 
26S8 
20,506 CUMMINS JstG 
2563 
29,449 CUMMINS lSlG 
2717 
25,630 CUMMINS !SlG 
2442 
33,778 CUMMINS lstG 
2611 
33,729 CUMMINS !stG 
2440 
28.923 CUMMINS L!JN 
2709 
21, 781 CUMMINS !stG 
2392 
28,3 19 CUMMINS l9N 
2689 
l4,475 CUMMINS l9N 
2164 
24,494 CUMMINS l9N 
2579 
21,829 CUMM:NS L9N 
2483 
32,571 CUMMINS L9N 
2674 
26,418 CUMMINS l9N 
2478 
29,646 CUMMINS l9N 
2670 
37,258 CUMMINS l9N 
2563 
28,41.9 CUMMJN5 l9N 
2711 
l9,'J7l CUMMJNS t9N 
2435 
16,087 CUMMlN5 1.'JN 
1925 
29.028 CUMM1N5 l9N 
1828 
12,640 CUMMINS ~N 
2064 
32,629 CUMMINS 1.9N 
742 
6,582 CUMMJNS lSlG 
901 
9,554 CUMMlNS ISlG 
216"2 
44,860 CUMMINS lSlG 
2473 
49,256 CUMMINS tSlG 
2562 
S2,38l CUMMINS ISLG 
2559 
Sl.651 CUMMINS J51G 
2208 
44,179 CUMMINS lSl.G 
2142 
43,165 CUMMINS JSlG 
2221 
48,470 C\JMMINS ISlG 
2091 
43,865 CUMMINS ISlG 
2231 
47,449 
CUMMINS JSLG 
2240 
40,841 C\JMMINS 15LG 
2406 
4!1,660 CU MM INS ISLG 
2491 
40,237 CUMMINS ISLG 
2800 
S4,653 CUMM INS ISLG 
2340 
46,732 CUM MINS ISLG 
2273 
44,396 CUMM INS ISLG 
25&8 
53,036 CUMMINS ISLG 
2177 
42,363 CUMM INS ISLG 
2223 
48,523 CUMM INS ISLG 
2524 
56,380 CUMM INS L9N 
2063 
4S,327 CUMMINS \.9N 
21U 
3S.SSO CUMM INS l9N 
1811 
37,1152 CUMMINS 1..9N 
1042 
18.185 CUMM INS l9N 
'20 
320 
320 
320 
'20 
l20 
"° 
"° 
320 
320 
320 
320 
320 
320 
320 
"° 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
"° 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
320 
"° 
320 
320 
320 
320 
320 
320 
320 
320 
320 
"° 
"° 
320 
320 
l20 
320 
"° 
320 
320 
320 
320 
320 
"° 
320 
"° 
320 
320 
310 
TNCk 
Annu.I 
Route 
Perccntag 
NOx 
wltl'iln 
c within 
Non· 
CNG 
Cle:t0l 
Eml»lons Non-
Non· 
Attalnmo 
NOx 
NOx 
Reduction attalnmc ott.olnmon nt Aro• 
RO$fdon 
Front 
h:i:/mll•) J..e!!!ill!l 
(tons) 
nt Area 
t Arca 
Mllll'S 
II.Ill 
RoUoff Loodor 
2012 
2.21 _____!.,ll. 
0.17 Yes 
100% 
24895 
24,895 
O 
O 
20U 
2.27 ~ 
0,16 Yl!S 
100% 
23'31 
23,737 
2014 
2.27 ~ 
O.U Ye$ 
100% 
218H 
21,833 
2014 
2.21 ~ 
0.14 Yt>:i 
100% 
27066 
27,066 
2017 
0.61 ~ 
0.14 Yes 
100% 
22992 
22,992 
2017 
0.63 ~ 
0,15 Ye-. 
100% 
24707 
24,707 
2017 
0.63 __..§:11. 
0.14 y~ 
100% 
22720 
22,720 
2012 
l .77 
6.64 
0,24 y~ 
100% 
44095 
0 
44,095 
2012 
1.17 
6.64 
0.14 Yrs 
100% 
26544 
O 
26.544 
2012 
1.77 
6.64 
0.15 Yrs 
100% 
27569 
o 
27,669 
2012 
1.71 
6.64 
0.16 Ye-s 
100% 
2.9119 
29,119 
2014 
1.76 
S.29 
0.11 Yll'$ 
100% 
21649 
27.649 
2014 
1.76 
5.29 
0,1.; No 
91% 
31720 
31,720 
2013 
l 17 ~ 
0.13 'fes 
Hl0% 
12708 
32,708 
2014 
1.76~ 
0.12 Yts 
100% 
29702 
29,702 
2014 
l.76~ 
0.14 Yll'I 
100% 
35040 
35,040 
2014 
l.76~ 
0.13 YM 
100'..4 
32881 
32.881 
2014 
1.75~ 
0.11; YM 
100% 
3&770 
36,770 
2014 
1.76 
S.29 
0.11 Yes 
10014 
27993 
0 
27,993 
2014 
1.76 
5.29 
0.10 Yrs 
100% 
25923 
0 
25,923 
2014 
1.75~ 
0.13 Ye!$ 
100% 
33995 
O 
33,995 
2014 
1.76~ 
0.11 YC$ 
100"..4 
29168 
29,168 
2014 
1.76~ 
0.08 Yn 
100'..4 
20399 
20,399 
2014 
1.76~ 
0.12 Yrs 
100% 
310li5 
0 
31,065 
2014 
1.76 ___j,12.. 
0.14 y~ 
100'..4 
35423 
35,423 
2014 
l .76 
5.29 
O.l2 y~ 
100% 
29689 
29,689 
2014 
1.76 
S.23 
0 .14 Yrs 
100% 
35361 
o 
35,361 
''"' 
2015 
2015 
2016 
""' 
2016 
2018 
2017 
2018 
2018 
2018 
2018 
2018 
2018 
2018 
2018 
2019 
2019 
201!1 
201' 
201' 
201' 
2011 
2011 
2012 
2012 
2012 
2012 
2012 
2014 
2014 
2014 
2014 
2014 
2015 
2014 
"'" 
2015 
2015 
2015 
2017 
2017 
2018 
201& 
2018 
2018 
2013 
1.76 
S.29 
1.76 
5.29 
1.76~ 
0.52_..hl!. 
0.52~ 
0.52 _.H!. 
0.36________..lJ!_ 
0.49~ 
0.36 
3.58 
0.36 
3.5.s 
0.36 
3.58 
0.36 
3.58 
0.36~ 
0.36_±1!. 
0.36~ 
0.36~ 
0.36_!J!_ 
0.36~ 
0.35 -----M!. 
0.36~ 
0.36_1:& 
0.36~ 
2.27~ 
2.27~ 
2.13~ 
2.13~ 
2.13 ---..!QQ. 
2 .13~ 
2.U ____!&!Q. 
2.13~ 
2.13~ 
2 • .13~ 
2.13-----Y!_ 
2 .13~ 
2.13~ 
2 .13~ 
2.13_..!J!. 
2.13~ 
2.U ____!l!. 
2.13--Y!,. 
0,S9 --2.:2L 
O.SS ____l...& 
0.43~ 
0 .43--.....!:R 
0.43~ 
0 .43 ----i:!!. 
0.43 
4.l2 
Total 
0.09 Yes 
0,08 Yos 
0 .11 Yos 
0.13 Ye:; 
0,11 Yin 
0.11 Yo~ 
0.10 Yen. 
0.11 Yci; 
0.10 Yw. 
0.12 YM 
0.09 Yes 
0.08 Yes 
0,12 Ym. 
0.09 y~ 
0.11 Y~ 
0 ,13 Yin 
0 .10 Yos 
0,14 y~ 
0 .06 Yes 
0.10 Yes 
0.12 YM 
0.12 Yes 
0.04 Yos 
0.06 Yos 
0.29 '{~ 
0.32 Yi;:s 
0.34 y~ 
0.33 Yes 
0.29 Yes 
0.20 YH 
0,2l Yes 
0.21 Yos 
0.22 Yes 
0.19 y~ 
0.23Yt-$ 
0.l9YI!) 
0.26 'fM 
0.22Yes 
0.21Yes 
0.2SY.n 
0.2SY.n 
0.28Yt'S 
0.24Yt:s 
0.19Yes 
0.17Ycs 
0.16Y(!'_,, 
O.OSYrs 
U.5167 
100% 
24416 
0 
24,416 
100% 
20506 
20,506 
100% 
29449 
29,449 
100% 
25630 
25,610 
100% 
33778 
33,718 
100% 
33729 
33,729 
100% 
28923 
211.923 
100% 
21781 
0 
21,781 
100% 
2881.9 
0 
28,819 
100% 
3447S 
0 
34,475 
100% 
24494 
o 
24A94 
100% 
21829 
21,8'29 
100% 
32571 
32,571 
100% 
26418 
26,418 
100% 
29646 
2',646 
100% 
372S!I 
37,258 
100% 
28419 
28,41'J 
100% 
3"71 
39,971 
100% 
16087 
16,087 
100% 
2902S 
0 
29.028 
100% 
12640 
n,&.co 
1Cl0% 
32629 
32,629 
100% 
6S82 
6,S82 
0 
100% 
!XS4 
9,554 
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48470 
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54653 
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42363 
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48523 
.:8,523 
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23 
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REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 3: 
EPA LETTER DATED AUGUST 18, 2021 
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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
REGION IX 
75 Hawthorne Street 
San Francisco, CA 94105-3901 
Richard Sumner 
Permitting Division Manager 
Maricopa County Air Quality Department 
3800 N. Central Avenue, Suite 1400 
Phoenix, AZ  85012 
Re: Comments on Proposed Permit Action for the Intel Corporation – Ocotillo Campus in Chandler, AZ 
Dear Richard Sumner: 
Thank you for the opportunity to review the Maricopa County Air Quality Department’s (MCAQD) July 
21, 2021 proposed permit action for the Intel Corporation – Ocotillo Campus (“Intel”). In this action, 
Intel is requesting authorization for a major modification to construct and operate two new 
semiconductor Fab modules and supporting equipment (“Fab 52 and Fab 62”). The permit action also 
relies on the MCAQD’s permits for three Waste Management, Inc. (WM) facilities to generate mobile 
source emission reduction credits (MERCs) to be used as emissions offsets for the Intel project. This 
letter and the enclosure provide the U.S. Environmental Protection Agency’s (EPA) comments on the 
MCAQD’s proposed action and the WM permits. In developing our comments, we also reviewed the 
requirements of Clean Air Act (CAA) section 173, the MCAQD’s State Implementation Plan (SIP)-
approved and non-SIP approved rules, and the EPA’s guidance document “Improving Air Quality with 
Economic Incentive Programs” (January 2001). 
Our comments focus primarily on ensuring the enforceability of the emissions offsets required for this 
project under the CAA’s Nonattainment New Source Review (NNSR) program. This permit action 
pilots an innovative approach of generating offsets by imposing requirements on a mobile source fleet 
through the fleet owner’s CAA stationary source permit. Mobile sources are not typically subject to 
CAA stationary source permitting requirements. In this case, the MERCs are being generated by WM’s 
refuse truck fleets by switching diesel fueled vehicles to vehicles fueled with compressed natural gas 
(CNG). This approach was used because the MCAQD does not currently have an EPA-approved 
program in the MCAQD’s portion of the Arizona SIP for generating MERCs for the purpose of meeting 
CAA stationary source permitting requirements.  
The ability to generate MERCs through MCAQD-issued permits is based, in part, on our understanding 
of the MCAQD’s authority to issue a stationary source permit that includes enforceable requirements for 
mobiles sources that are under the control of the stationary source owner or operator. Thus, this option 
may have limited application if the entity seeking to generate MERCs does not also have an enforceable 
CAA stationary source permit. Our comments are as comprehensive as possible to ensure that the 
permits issued to WM to generate the offsets upon which Intel is relying will meet the NNSR program’s 
offset integrity requirements at the time construction is authorized.  
Additionally, the MERCs being certified for this project appear to be good candidates for emissions 
offsets because the vehicles that are the source of the credits are municipal refuse trucks that represent 
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EPA Region 9 Comments – 8/18/2021 
Intel – Ocotillo Campus, Major Modification 
“captive fleets” (e.g., where all the vehicles in the fleet are identifiable, have GPS tracking equipment 
installed, and return to base daily), their emissions are included in the MCAQD’s emissions inventory 
used for ozone attainment planning, and they can be expected to operate at current or greater utilization 
levels into the future. Also, the emission reductions associated with these MERCs have not been relied 
upon in any demonstrations of attainment or reasonable further progress.  
We are not aware of another instance of generating offsets from mobile sources by imposing 
requirements on a mobile source fleet through the fleet owner’s CAA stationary source permit. Thus, the 
EPA will continue to evaluate this approach to ensure all the NNSR program criteria are met. A SIP-
approved rule remains the EPA’s preferred approach for ensuring MERCs are generated in a manner 
that meets the NNSR program’s criteria of being real, surplus, permanent, quantifiable, and federally 
enforceable.  
We appreciate your willingness to include us in the development of this permitting action and we look 
forward to continuing to work with the MCAQD in meeting the CAA’s requirements, as well as our 
shared goal of protecting human health and the environment.   
If you have any questions regarding the EPA’s comments, please contact Lisa Beckham at (415) 972-
3811 or beckham.lisa@epa.gov.   
Sincerely, 
Laura Yannayon 
Acting Manager, Permits Office 
Air and Radiation Division 
Enclosure 
cc: Craig McCurry, Senior Environmental Engineer, Intel Corp 
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EPA Region 9 Comments – 8/18/2021 
Intel – Ocotillo Campus, Major Modification 
Below are the EPA’s comments on the MCAQD’s July 21, 2021 proposed action to authorize the Fab 52 
and Fab 62 project for the Intel Corporation – Ocotillo Campus under the New Source Review (NSR) 
program through revisions to the facility’s title V permit. Our comments also relate to the permits issued 
to three WM facilities, which Intel is relying on to generate emission reductions to meet the NNSR 
program’s offset requirements.   
1. Enforceability of Emissions Offsets Obligations in Intel’s Permit
a.
Intel’s draft permit does not contain enforceable conditions requiring Intel to use emissions
offsets certified by the MCAQD for the Fab 52 and Fab 62 project. Consistent with MCAQD
Rule 240 § 304.9.c, and in the same manner that MCAQD has made its Lowest Achievable
Emission Rate (LAER) determinations enforceable, the permit must include conditions
identifying the specific ton per year offset obligation applicable to this project (204.3 VOC
credits and 189.5 NOX credits) to ensure the reductions are an enforceable condition of the
permit to construct and operate.
b. Condition 2.c of Intel’s draft permit needs additional specificity to ensure its enforceability.
Consistent with the comment above, the condition should be expanded to include volatile organic
compounds (VOC) to ensure enforceability of the offset requirement for VOC. Additionally, it is
unclear what is meant by the nitrogen oxide (NOX) offset credits “shall be in effect” by the time
Intel commences operation of the project, as the emissions reductions that generate the offsets
credits must be federally enforceable prior to issuance of the authorization to construct
(consistent with CAA section 173(a)).  Please clarify this condition to indicate that such emission
reductions must have occurred and/or been implemented prior to the project commencing
operation.
2. Permanency of Offsets Obtained from Waste Management
The offsets generated by WM are made federally enforceable through SIP-approved MCAQD Rule
220 § 302.2, which provides a means for permittees to accept voluntary, federally enforceable permit
conditions. However, the voluntary origin of the federally enforceable conditions affects whether
they meet the permanency requirements of the MCAQD’s NNSR program (MCAQD Rule 240 §
304.4). To ensure the permanency of these reductions, the MCAQD should submit the MERC permit
conditions in WM’s permits for approval into the MCAQD portion of the Arizona SIP. The EPA
will work with the MCAQD to help establish permanency of these offsets prior to the project
commencing operation.
3. Enforceability of Waste Management MERCs
Many of the conditions in the WM permits regarding the MERCs are too general to be enforceable
as a practical matter and insufficient for ensuring the offsets meet the offset integrity requirements in
MCAQD Rule 240 § 304.4 and are therefore valid. To ensure the offsets are valid, the WM permits
must be revised to identify the criteria upon which MCAQD is certifying the emission reductions,
including but not limited to: (1) the quantity in tons per year of credits generated by WM’s permit,
(2) the total number of CNG-powered vehicles that have been (or will be) used to generate the
offsets granted by the permit, (3) a list of the specific municipal refuse vehicles used to generate the
offsets (e.g., by serial/VIN), (4) the specific nonattainment area (e.g., Phoenix-Mesa ozone
nonattainment area) within which the CNG-powered vehicles must be operated, and (5) specific
monitoring and recordkeeping conditions for ensuring compliance with these requirements.
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EPA Region 9 Comments – 8/18/2021 
Intel – Ocotillo Campus, Major Modification 
For example, in response to this comment, an attachment could be added to the permit that is 
referenced within the emission reduction credit (ERC) conditions that identifies items (1) through 
(3). We would also recommend including a reporting requirement that WM submit an updated 
version of the attachment annually. 
4. Reporting Requirements for Waste Management
Because WM has ongoing obligations to ensure compliance with the information upon which the
ERC credits were certified, WM’s permits must include conditions to monitor ongoing compliance
through, at a minimum, an annual reporting requirement. The report should summarize how
monitoring/recordkeeping demonstrates that WM is continuing to ensure the emissions reductions
are being achieved. Other types of notifications should be considered, for example, what happens if a
CNG refuse truck is damaged or suffers significant maintenance issues that inhibits the truck from
generating the offset credits attributed to that truck.
5. Removal/Disposal of Replaced Refuse Trucks in Waste Management Permits
The current conditions in WM’s permits related to removal and disposal of replaced refuse trucks do
not ensure that all replaced trucks for which offset credits have been generated do not return to the
Phoenix-Mesa ozone nonattainment area. To meet the permanent and enforceable requirements for
valid offsets, WM’s permits must include additional requirements to monitor the operation of
replaced refuse trucks to ensure they do not return to the nonattainment area. This should include
monitoring and recordkeeping requirements to ensure that replaced trucks for which offset credits
were generated and that remain in operation (instead of being permanently disabled) are not being
used or will not be used in the Phoenix-Mesa ozone nonattainment area.
6. Monitoring of Equipment Use in Waste Management Permits
The ERC permit condition related to “monitoring of equipment use” appears to be intended to
require WM to monitor the operational parameters of the refuse trucks that were used in certifying
that the emission reductions for the project are real, surplus, and quantifiable. However, the
condition is not clear enough to make this requirement enforceable as a practical matter, as required
by MCAQD Rule 240 § 304.4. To ensure enforceability, the permit must specifically identify the
parameters that require ongoing monitoring and recordkeeping, and the method that will be used to
conduct the monitoring. We expect that the monthly monitoring and recordkeeping would include
factors such as vehicle miles traveled (VMT) for each refuse truck, VMT travelled while in service,
and the percent of VMT traveled within the nonattainment area.
7. Clarification of Several Waste Management ERC Permit Conditions
As described below, several of the conditions pertaining to the emission reductions in the WM
permits warrant additional specificity to ensure their practical enforceability:
a. Operation and Maintenance
The permit condition related to operation and maintenance is not fully enforceable because we
could not find a clear corresponding monitoring/recordkeeping provision related to this
requirement. This permit must include requirements to keep records onsite that demonstrate
compliance with this requirement.
b. Inspections
The permit condition related to inspections must further specify that the refuse trucks and
monitoring equipment can also be inspected.
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EPA Region 9 Comments – 8/18/2021 
Intel – Ocotillo Campus, Major Modification 
c.
Recordkeeping
In the recordkeeping section, it is unclear what the permit is referring to by “equipment
category.” This must be revised to provide more clarity. This section also allows WM to choose
which records they will maintain. As currently written, it appears WM could choose a different
monitoring parameter each month. It is unclear how such information would ensure
enforceability of the MERCs. For example, the ability to only monitor hours of operation would
not ensure the MERCs meet the offset integrity requirements. Please ensure the required
recordkeeping matches the monitoring data used to determine the quantity of offsets generated.
d. Terminology in ERC Conditions is Inconsistent
The permits’ ERC conditions seem to use the terms equipment, vehicle, and engine
interchangeably. Please review the final conditions to ensure consistent terminology. The
language of the ERC conditions needs to be specific enough to ensure that an inspector can
properly identify what they are looking for from the permit conditions. For example, identifying
the equipment as “refuse trucks” would significantly clarify the permit conditions. There is also
an instance where the term “generator” is used that we believe should be clarified to “Permittee.”
e.
References to Application
The permit conditions contain several references to the “application” used for generating these
emission reductions. These references appear to be intended to make specific elements of the
application enforceable, but they lack specificity, which likely makes them unenforceable. To the
extent any references to the “application” remain in the permit conditions after consideration of
our comments, such references must specify which portions of the application they refer to in
order to be able to make those provisions enforceable as a practical matter. One option might be
including portions of the application as an attachment to the permit.
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REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 4: 
NOTICE OF PUBLIC HEARING
(Pending Affidavit of Publication) 
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REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 5: 
BOARD OF SUPERVISORS’ APPROVAL 
(Pending Board of Supervisors’ Approval) 
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REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 6: 
RELEVANT ARIZONA REVISED STATUTES 
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Relevant Arizona Revised Statutes 
49-112. County regulation; standards 
A. When authorized by law, a county may adopt a rule, ordinance or regulation that is more 
stringent than or in addition to a provision of this title or rule adopted by the director or any 
board or commission authorized to adopt rules pursuant to this title if all of the following 
requirements are met: 
1.
The rule, ordinance or regulation is necessary to address a peculiar local condition.
2.
There is credible evidence that the rule, ordinance or regulation is either:
(a) Necessary to prevent a significant threat to public health or the environment that
results from a peculiar local condition and is technically and economically feasible. 
(b) Required under a federal statute or regulation, or authorized pursuant to an 
intergovernmental agreement with the federal government to enforce federal statutes 
or regulations if the county rule, ordinance or regulation is equivalent to federal 
statutes or regulations. 
3.
Any fee or tax adopted under the rule, ordinance or regulation does not exceed the
reasonable costs of the county to issue and administer the permit or plan approval program.
B. When authorized by law, a county may adopt rules, ordinances or regulations in lieu of a state 
program that are as stringent as a provision of this title or rule adopted by the director or any 
board or commission authorized to adopt rules pursuant to this title if the county 
demonstrates that the cost of obtaining permits or other approvals from the county will 
approximately equal or be less than the fee or cost of obtaining similar permits or approvals 
under this title or any rule adopted pursuant to this title. If the state has not adopted a fee or 
tax for similar permits or approvals, the county may adopt a fee when authorized by law in 
the rule, ordinance or regulation that does not exceed the reasonable costs of the county to 
issue and administer that permit or plan approval program. 
C. A county that adopts rules, ordinances or regulations pursuant to subsection B of this section 
and that at any time cannot comply with subsection B of this section shall prepare and fil e a 
notice of noncompliance with the director. The county shall post a copy of the notice of 
noncompliance on the county's website with a date stamp of the date of posting. If the county 
does not comply with subsection B of this section within one year after posting of the notice 
on the county's website, the director shall provide written notice to and assert regulatory 
jurisdiction over those persons and entities subject to the affected county rules, ordinances or 
regulations. 
D. Except as provided in chapter 3, article 3 of this title, before adopting or enforcing any rule, 
ordinance or regulation pursuant to subsection A or B of this section, the county shall 
comply with the following requirements: 
1.
Prepare a notice of proposed rulemaking to include the proposed rule, ordinance or
regulation. This notice shall demonstrate evidence of compliance with subsection A or B of
this section. The notice shall include the name, address and phone number of a person who
can answer questions about the proposed rule, ordinance or regulation and accept any
written requests for the county to conduct an oral proceeding. The county shall post the
notice on the county's website with a date stamp of the date of posting. The county shall
publish the availability of the notice of the proposed rule, ordinance or regulation in a
newspaper of general circulation in the county. If there is no newspaper of general
circulation in the county, the county shall publish the notice in a newspaper of general
circulation in an adjoining county. If requested by the public, the county shall make available
a paper copy of the notice at a reasonable cost.
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2.
For at least thirty days after the posting of the notice of the proposed rule, ordinance or
regulation, afford persons the opportunity to submit in writing comments, statements,
arguments, data and views on the proposed rule, ordinance or regulation.
3.
Respond in writing to the comments submitted pursuant to paragraph 2 of this subsection
and post the county's response on the county's website. If requested by the public, the
county shall make paper copies of its comments available at a reasonable cost.
4.
Schedule a public hearing on the proposed rule, ordinance or regulation if a written request
for an oral proceeding is submitted to the county during the thirty-day comment period. The
county shall post the notice of oral proceeding on a proposed rule, ordinance or regulation
on the county's website. The county shall post the notice of oral proceeding at least twenty
days before the date of the oral proceeding. The county shall publish notice of any public
hearing required pursuant to this paragraph in any newspaper as prescribed by this title or
county ordinance. The county shall select a time and location for the public hearing that
affords a reasonable opportunity for the public to participate.
E. A county is not required to comply with subsection D, paragraphs 2, 3 and 4 of this section 
before it adopts or enforces a rule, ordinance or regulation if the rule, ordinance or regulation 
only incorporates by reference an existing state or federal rule or law that provides greater 
regulatory flexibility for regulated parties and otherwise satisfies the requirements prescribed in 
subsection B of this section. 
F. Until June 30, 1995, a person may file with the clerk of the board of supervisors for that 
county a petition challenging a county rule, ordinance or regulation adopted before July 15, 
1994 for compliance with the criteria set forth in subsection A or B of this section. The 
petition shall contain the grounds for challenging the specific county rule, ordinance or 
regulation. Within one year after the petition is filed, the board of supervisors shall review the 
challenged rule, ordinance or regulation and make a written demonstration of compliance with 
the criteria set forth in subsection A or B of this section and challenged in the petition. Any 
rules, ordinances or regulations that have been challenged and for which the board of 
supervisors has not made the written demonstration within one year after the filing of the 
petition required by this section become unenforceable as of that date. If a county has already 
made a written demonstration under section 49-479, subsection C, for a rule, ordinance or 
regulation, the person filing the petition shall state the specific grounds in the petition why that 
demonstration does not meet the requirements of this section. 
G. A rule, ordinance or regulation adopted pursuant to subsection A of this section may not 
be invalidated subsequent to its adoption on the grounds that the economic feasibility 
analysis is insufficient or inaccurate if a county makes a good faith effort to comply with 
the economic feasibility requirement of subsection A, paragraph 2, subdivision (a), of this 
section and has explained in the written statement, made public pursuant to subsection D 
of this section, the methodology used to satisfy the economic feasibility requirement. 
H. This section shall not apply to any rule, ordinance or regulation adopted by a county pursuant to: 
1.
Title 36 for which the state has similar statutory or rule making authority in this title.
2.
Section 49-391.
3.
Chapter 3, article 8 of this title.
4.
Chapter 4, article 3 of this title and section 49-765.
5.
Nonsubstantive rules relating to the application process that have a de minimis economic
effect on regulated parties.
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49-474. County control boards 
The board of supervisors of each county may authorize the board of health or health department 
of their respective counties in cooperation with the department of environmental quality to: 
1. Study the problem of air pollution in the county. 
2. Study possible effects on adjoining counties. 
3. Cooperate with chambers of commerce, industry, agriculture, public officials and all other 
interested persons or organizations. 
4. Hold public hearings if in their discretion such action is necessary. 
5. The board of supervisors by resolution may establish an air pollution control district. 
49-479. Rules; hearing 
A. The board of supervisors shall adopt such rules as it determines are necessary and feasible to 
control the release into the atmosphere of air contaminants originating within the territorial 
limits of the county or multi-county air quality control region in order to control air pollution, 
which rules, except as provided in subsection C shall contain standards at least equal to or 
more restrictive than those adopted by the director. In fixing such standards, the board or 
region shall give consideration but shall not be limited to: 
1. The latest scientific knowledge useful in indicating the kind and extent of all identifiable 
effects on health and welfare which may be expected from the presence of an air pollution 
agent, or combination of agents in the ambient air, in varying quantities. 
2. Atmosphere conditions and the types of air pollution agent or agents which, when present in 
the atmosphere, may interact with another agent or agents to produce an adverse effect on 
public health and welfare. 
3. Securing, to the greatest degree practicable, the enjoyment of the natural attractions of the 
state and the comfort and convenience of the inhabitants. 
B. No rule may be enacted or amended except after the board of supervisors first holds a 
public hearing after twenty days' notice of such hearing. The proposed rule, or any proposed 
amendment of a rule, shall be made available to the public at the time of notice of such 
hearing. 
C. A county may adopt or amend a rule, emission standard, or standard of performance that is as 
stringent or more stringent than a rule, emission standard or standard of performance for 
similar sources adopted by the director only if the county complies with the applicable 
provisions of section 49-112. 
D. All rules enacted pursuant to this section shall be made available to the public at a 
reasonable charge upon request. 
49-480. Permits; fees 
A. The board of supervisors may adopt a program for the review, issuance, revision, 
administration and enforcement of permits and for public review of proposed permits for 
sources that are subject to section 49-426, subsection A, that are not under the jurisdiction of 
the state pursuant to section 49-402 and that are not otherwise exempt pursuant to section 49-
426, subsection B and subsection K of this section. This program shall include provisions for 
administration, inspection and enforcement of general permits issued pursuant to section 49-
426, subsection H and subsection J of this section. 
B. Procedures for the review, issuance, revision and administration of permits issued pursuant to 
this section and required to be obtained pursuant to title V of the clean air act including sources 
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that emit hazardous air pollutants shall be substantially identical to procedures for the review, 
issuance, revision and administration of permits issued by the department under this chapter. 
Such procedures shall comply with the requirements of sections 165, 173 and 408 and titles III 
and V of the clean air act and implementing regulations for sources subject to titles III and V of 
the clean air act. Procedures for the review, issuance, revision and administration of permits 
issued pursuant to this section and not required to be obtained pursuant to title V of the clean 
air act shall impose no greater procedural burden on the permit applicant than procedures for 
the review, issuance, revision and administration of permits issued by the department under 
sections 49-426 and 49-426.01 and other applicable provisions of this chapter. 
C. Upon adoption of a permit program by the board of supervisors pursuant to this section, no 
person may begin actual construction, operate or make a modification to any source subject 
to the permit program without complying with the requirements of that program. 
D. Permits issued pursuant to a program adopted under this section are subject to payment 
of a reasonable fee to be determined as follows: 
1.
For any source required to obtain a permit under title V of the clean air act, the board of
supervisors shall establish by rule a system of fees consistent with and equivalent to that
prescribed under section 502 of the clean air act. Such system shall prescribe procedures for
increasing the fee each year by the percentage, if any by which the consumer price index for
the most recent calendar year ending before the beginning of such year exceeds the
consumer price index for the calendar year 1989.
2.
For any facility subject to the permitting requirements of this chapter but not required to
obtain a permit under title V of the clean air act, the board of supervisors shall determine a
permit fee based on all reasonable direct and indirect costs required to administer the permit,
but not exceeding twenty-five thousand dollars.
The board of supervisors shall establish an annual inspection fee, not to exceed the average cost of 
services. 
E. Funds received for permits issued pursuant to this section shall be deposited in a special 
public health fund and shall be used by the control officer to defray the costs of 
implementing this article. 
F. Permits issued pursuant to this section for a source required to obtain a permit under title V 
of the clean air act shall, and for a source that is not required to obtain a title V permit may, 
contain all of the following: 
1.
Conditions reflecting all applicable requirements of this article and rules adopted pursuant to
this article.
2.
Enforceable emission limitations and standards.
3.
A schedule for compliance, if applicable.
4.
The requirement to submit at least every six months the results of any required monitoring.
5.
Any other conditions that are necessary to assure compliance with this article and the clean
air act, including the applicable implementation plan.
G. The control officer may refuse to issue any permit to any source subject to the requirements 
of title V of the clean air act if the administrator objects to its issuance in a timely manner as 
prescribed under title V of the act. 
H. In the case of a permit with a term of three or more years issued pursuant to the requirements 
of title V of the clean air act to a major source, the control officer shall require revisions to the 
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permit to incorporate applicable standards and regulations adopted by the administrator 
pursuant to the clean air act after the issuance of the permit. The control officer shall require 
any revisions as expeditiously as practicable but not later than eighteen months after the 
promulgation of such standards and regulations. No permit revision shall be required if the 
effective date of the standards and regulations is after the expiration of the permit. Any permit 
revision required pursuant to this subsection shall be treated as a permit renewal. 
I. Except as provided in section 49-426, subsection B and subsection A of this section, any 
person burning used oil, used oil fuel, hazardous waste or hazardous waste fuel in any machine, 
incinerator or device shall first obtain a permit from the control officer. Any permit issued by 
the control officer under this subsection shall contain, at a minimum, conditions governing: 
1.
Limitations on the types, amounts and feed rates of used oil, used oil fuel, hazardous waste
or hazardous waste fuel which may be burned.
2.
The frequency and types of fuel testing to be conducted by the person.
3.
The frequency and type of emissions testing or monitoring to be conducted by the person.
4.
Requirements for record keeping and reporting.
5.
Numeric emission limitations expressed in pounds per hour and tons per year for air
contaminants to be emitted from the facility burning used oil, used oil fuel, hazardous waste
or hazardous waste fuel.
J. The board of supervisors may authorize by rule the control officer to issue a general permit 
for a defined class of facilities if that class of facilities has not been issued a general permit by 
the director for sources in that county pursuant to section 49-426, subsection H. The criteria 
for issuance of a general permit are those applicable to the director pursuant to section 49-
426, subsection G. 
K. The board of supervisors may identify by rule sources or classifications of sources for which a 
permit is not required and pollutant-emitting activities and emissions units at permitted 
sources that are not subject to inclusion in the permit. The criteria for exemptions granted 
pursuant to this subsection are those applicable to exemptions granted by the director 
pursuant to section 49 -426, subsection B. 
L. In determining whether a permitting threshold established pursuant to this section applies to 
an existing source, the control officer shall exclude particulate matter that is not subject to a 
national ambient air quality standard under the clean air act. 
M. The board of supervisors may adopt a rule or ordinance that establishes less burdensome 
permit procedures and requirements for permits that are not required to be obtained pursuant 
to title V of the clean air act. Until the effective date of a rule or ordinance adopted by a board 
of supervisors pursuant to this section, the control officer, either on the control officer's own 
initiative or on the request of a permit applicant, may waive requirements that are not 
appropriate for non-title V sources. 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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Return to Table of Contents 
REVISION TO ARIZONA’S SIP 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS 
APPENDIX 7: 
COMPILATION OF PUBLIC COMMENTS 
REVISION TO ARIZONA’S STATE IMPLEMENTATION PLAN (SIP) 
INCORPORATION OF WASTE MANAGEMENT PERMIT CONDITIONS
[Month - Year] 
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