GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):128,852.8
CO2 equivalent emissions from supplier subparts LL-QQ (metric tons):
Biogenic CO2 emissions from facility subparts C-II, SS, and TT (metric tons):21,159.7
Cogeneration Unit Emissions Indicator:N
GHG Report Start Date:2020-01-01
GHG Report End Date:2020-12-31
Description of Changes to Calculation Methodology:Changed to bulk methodology for equation HH-1.
Plant Code Indicator:N
Primary NAICS Code:562212
Second Primary NAICS Code:

Parent Company Details:

Parent Company Name:WASTE CONNECTIONS US INC
Address:3 Waterway Square Place, Suite 110, The Woodlands, TX 77380
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Biogenic Carbon dioxide
Gas Quantity	21,159.7 (Metric Tons)
Own Result?

Gas Name	Methane
Gas Quantity	1.3 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.256 (Metric Tons)
Own Result?

Unit Details:

Unit Name : GP-LFGTE Facility
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Small Unit Aggregation Details:
Use Ivt Indicator: N
Highest Maximum Rated Heat Input Capacity: 14.6
Cumulative Maximum Rated Heat Input Capacity: 87.6

Emission Details:
Annual CO₂ mass emissions from sorbent: 0 (Metric Tons)
Annual Biogenic CO2 Emissions: 21159.7 (metric tons)
Annual Fossil fuel based CO2 Emissions: 0 (metric tons)

Tier Fuel Details:

Fuel : Landfill Gas
Tier Name : Tier 1 (Equation C-1)
Tier Methodology Start Date : 2020-01-01
Tier Methodology End Date : 2020-12-31

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
21159.7 (Metric Tons)	1.30 (Metric Tons)	0.256 (Metric Tons)	32.5 (Metric Tons)	76.3 (Metric Tons)

Equation C1/C8 Inputs :
Fuel Quantity : 837877914 (scf/year)

Subpart HH: Municipal Solid Waste Landfills

Gas Information Details

Gas Name	Methane
Gas Quantity	5,149.76 (Metric Tons)
Own Result?

Landfill Details

Is the landfill open?

Estimated Year LandFill Closure

2056

Starting Year for Accepting Waste

2004

First year of emissions reporting

2010

Leachate recirculation was used during the reporting year

Typical frequency of use for leachate recirculation system

Used several times a year for the past 10 years

Scales are present at the landfill in the reporting year

Does the landfill have a landfill gas collection system?

Passive vents and/or flares are present

Landfill Capacity

75286841 ( Metric Tons )

Total surface area of the landfill containing waste

692599.5 ( Square Meters )

Covertype Details

Sand cover

Other soil mixture

Aeration Details

Aeration Blower Capacity	( )
Landfill Fraction Affected by Aeration	( )
Aeration Blower Operations Hours	( )
Other MCF Factors
Additional Description

Current Waste Disposal Quantity Determination Details

First Year to Current Year Annual Waste Quantity Method

Reporting Year	2020
Total Annual Waste Disposal Quantity	1252358.88 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1252358.88 (Metric Tons)
Reporting Year	2019
Total Annual Waste Disposal Quantity	1337328.01 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1337328.01 (Metric Tons)
Reporting Year	2018
Total Annual Waste Disposal Quantity	1496058.42 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1496058.42 (Metric Tons)
Reporting Year	2017
Total Annual Waste Disposal Quantity	1506822.74 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1506822.74 (Metric Tons)
Reporting Year	2016
Total Annual Waste Disposal Quantity	1435092.83 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1435092.83 (Metric Tons)
Reporting Year	2015
Total Annual Waste Disposal Quantity	1332131.99 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1332131.99 (Metric Tons)
Reporting Year	2014
Total Annual Waste Disposal Quantity	1406820.91 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1406820.91 (Metric Tons)
Reporting Year	2013
Total Annual Waste Disposal Quantity	1559113.72 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1559113.72 (Metric Tons)
Reporting Year	2012
Total Annual Waste Disposal Quantity	1086785.11 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1086785.11 (Metric Tons)
Reporting Year	2011
Total Annual Waste Disposal Quantity	1164191.42 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1164191.42 (Metric Tons)
Reporting Year	2010
Total Annual Waste Disposal Quantity	1024223.08 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	1024223.08 (Metric Tons)

Waste Type Details

Year Waste Disposed

2020

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2019

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2018

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2017

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2016

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2015

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2014

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2013

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2012

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2011

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2010

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Historical Waste Disposal Quantity Estimation Details

Method used to determine the annual waste quantity for any prior years

Were scales used to determine the annual waste quantity	Y
Start Year	2004
End Year	2009

Prior Year Annual Waste Quantity Method

Reporting Year	2009
Total Annual Waste Disposal Quantity	820632.5 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	820632.5 (Metric Tons)
Reporting Year	2008
Total Annual Waste Disposal Quantity	803716.02 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	803716.02 (Metric Tons)
Reporting Year	2007
Total Annual Waste Disposal Quantity	922183.23 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	922183.23 (Metric Tons)
Reporting Year	2006
Total Annual Waste Disposal Quantity	923193.63 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	923193.63 (Metric Tons)
Reporting Year	2005
Total Annual Waste Disposal Quantity	536684.21 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	536684.21 (Metric Tons)
Reporting Year	2004
Total Annual Waste Disposal Quantity	336901.48 (Metric Tons)
Method Used to Determine Quantity	Used scales to weigh loads before off-loading and either used scales to weigh individual loads after off-loading or used representative tare vehicle/container weights
Annual Waste Disposal Quantity	336901.48 (Metric Tons)

Waste Type Details

Year Waste Disposed

2009

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2008

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2007

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2006

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2005

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Year Waste Disposed

2004

Missing data procedure used?

Number of Times Substituted

Waste Type Details

Option	Waste Type	Percent by Weight	Degradable Organic Carbon Value	Fraction Of DOC Dissimilated	Decay Rate
Bulk Waste	Bulk waste	1	0.2	0.5	0.057

Working Capacity Details

Were working capacities used to determine waste disposal quantities

Tipping Receipt Details

Were tipping receipts or company records used to determine waste disposal quantities

Method used for estimating all annual waste quantities that are not determined with the methods above

Method

None

Method Start Year
Method End Year

Historical Estimation Population Details

Historical landfill Capacity
Reason

Methane Generation and Emissions for Landfills with LFG Collection Systems

Gas Collection System Information

System Manufacturer	Geosyntec Consultants (designer), Golder Associates (designer), Cornerstone Environmental Group (designer), Aptim (contractor/designer), SCS Field Services (contractor), Skagen Energy Services (contractor)
System Capacity	8400 ( acfm )
Number of Wells	162

Methane Oxidation Fractions

Methane Oxidation Fraction HH-5	0.10
Methane Oxidation Fraction HH-6	0.10
Methane Oxidation Fraction HH-7	0.10
Methane Oxidation Fraction HH-8	0.10

Measurement Locations

Name

Flare 2

Description

4,800 scfm candlestick flare

Annual Operating Hours

3085 (Hours)

Quantity of Recovered Methane

2939.38 (Metric Tons)

Destruction Devices

Name	Annual Operating Hours	Destruction Efficiency
Flare 2	3085 (Hours)	1 (fraction (number between 0 and 1))

Name

Flare 1

Description

3,600 scfm candlestick flare

Annual Operating Hours

2033 (Hours)

Quantity of Recovered Methane

1826.54 (Metric Tons)

Destruction Devices

Name	Annual Operating Hours	Destruction Efficiency
Flare 1	2033 (Hours)	1 (fraction (number between 0 and 1))

Name

Leachate Evaporator

Description

Skagen F1200 leachate evaporator using landfill gas as a fuel.

Annual Operating Hours

2467 (Hours)

Quantity of Recovered Methane

379.37 (Metric Tons)

Destruction Devices

Name	Annual Operating Hours	Destruction Efficiency
Leachate Evaporator	2467 (Hours)	0.98 (fraction (number between 0 and 1))

Name

LFGTE Facility

Description

Flowrate to the LFGTE Facility (Six CAT G3520C Engine/Generator sets)

Annual Operating Hours

6080 (Hours)

Quantity of Recovered Methane

7668.09 (Metric Tons)

Destruction Devices

Name	Annual Operating Hours	Destruction Efficiency
LFGTE Facility	6080 (Hours)	1 (fraction (number between 0 and 1))

Methane Generation and Emissions values

Estimated Gas Collection Efficiency HH3	0.70 ( decimal fraction )
Is Override Indicator?	N
Methane Generation Equation HH5	42533.47 ( Metric Tons )
Is Override Indicator?	N
Methane Emissions Equation HH6	31009.01 ( Metric Tons )
Is Override Indicator?	N
Methane Generation Equation HH7	16674.22 ( Metric Tons )
Is Override Indicator?	Y
Basis for Input Methane Generation Value	Equation HH-1
Methane Emission from Equation HH8	5149.76 ( Metric Tons )
Is Override Indicator?	Y

Gas Collection Systems details

Annual Volume FGCollected Gas Volumetric Flow	Measured Value	1370667380 ( scf )
	Is Substituted Indicator?	N
	Number of Times Substituted
Annual Average Methane Concentration	Measured Value	47.3 ( Number (between 0 and 100) )
	Is Substituted Indicator?	N
	Number of Days Substituted
	Number of Weeks Substituted
	Number of Months Substituted
	Number of Times Substituted
Temperature Incorporated Indicator	Y
Pressure Incorporated Indicator	Y
LFG Flow Wet Basis Indicator	Y
Methane Concentration Wet Basis Indicator	Y
Site Destruction Location	On-site
Annual Quantity Of Recovered MethaneHH4	12813.38 ( Metric Tons )

Waste Depth Details

Area Type	Waste Depth	Surface Area
A1	0 ( Meters )	0 ( Square Meters )
A2	15.2 ( Meters )	123429.1 ( Square Meters )
A3	45.7 ( Meters )	8093.7 ( Square Meters )
A4	53.3 ( Meters )	265656.3 ( Square Meters )
A5	53.3 ( Meters )	295420.5 ( Square Meters )

Equation HH-1 Details:

The fraction of CH4 in landfill gas (F), is it based on a measured value or default value	default
Fraction by volume of CH4 in landfill gas	0.5
An MCF value other than the default of 1 was used	N
Annual MCF Value	1.0

Annual Modeled Methane Generation	47259.41 ( Metric Tons )
Annual Modeled Methane Generation User Overrided value?	N