Appendix I: Performance Metrics

 

Metric Unit of Measure SASB Code 2021 2020
GREENHOUSE GAS EMISSIONS

Direct GHG emissions (same as gross global Scope 1 emissions)

Metric tons CO2e

IF-WM-110a.1

2,0291 1,4512

Indirect Scope 2 emissions from electricity consumption

Metric tons CO2e   3,564 3,2583
Other indirect Scope 3 emissions Metric tons CO2e   1,153 464
Total Operated Direct + Indirect GHG Emissions Metric tons CO2e   6,746 5,173
Emissions avoided through carbon sequestration Metric tons CO2e   (199,798)4 (231,764)
Net Negative Carbon Footprint Metric tons CO2e   (193,052) (226,591)
Scope 1 emissions intensity kg CO2e/bbl   0.1695


0.173

Scope 2 emissions intensity kg CO2e/bbl   0.2975 0.389
Scope 3 emissions intensity kg CO2e/bbl   0.0965 0.055

Total Operated Direct + Indirect GHG Emissions Intensity

kg CO2e/bbl   0.562 0.617
Total sequestered Metric tons CO2e   (276,153) (278,805)7
Total fuel consumed

Gigajoules (GJ)

Metric tons CO2e

EM-SV-110a.1

26,1711

1,847

18,224

1,2702

ENERGY MANAGEMENT
Total energy consumed

Gigajoules (GJ)

Metric tons CO2e

 

32,4981

3,564

27,689

3,258

AIR QUALITY
Nitrogen Oxide (NOx) emissions Metric tons IF-WM-120a.1 not meaningful not meaningful
Sulfur Oxide (SO2) emissions Metric tons IF-WM-120a.1 not meaningful not meaningful
Volatile organic compounds Metric tons IF-WM-120a.1 49.56 49.116
Hazardous air pollutants Metric tons IF-WM-120a.1 4.49 4.456
Slurry Emissions Metric tons CO2e   115.99 119.21
Landfill Emissions Metric tons CO2e   66.14 61.67

Number of facilities in or near areas of dense population

Number IF-WM-120a.2 0.0 0.0

Number of incidents of non-compliance associated with air emissions

Number IF-WM-120a.3 0.0 0.0
MANAGEMENT OF LEACHATE & HAZARDOUS WASTE
Number of correction actions implemented for landfill releases Number IF-WM-120a.2 0.0 0.0
Number of incidents of non-compliance associated with environmental impacts Number IF-WM-120a.3 0.0 0.0
WORKFORCE HEALTH & SAFETY
Total recordable incident rate (TRIR) Rate IF-WM-120a.1 0.0 0.0
Fatality rate Rate IF-WM-120a.1 0.0 0.0
Near miss frequency rate (NMFR) Rate IF-WM-120a.1 0.0 0.0
Number of road accidents and incidents Number IF-WM-320a.3 0.0 0.0
Total vehicle incident rate (TVIR) Rate EM-SV-320a.1 0.0 0.0
DIVERSITY - MANAGEMENT
GENDER REPRESENTATION
Female Percentage   7% 12%
Male Percentage   93% 88%
RACIAL/ETHNIC GROUP REPRESENTATION
White Percentage   82% 84%
Hispanic Percentage   11% 12%
Black or African American Percentage   7% 4%
Asian or Pacific Islander Percentage   0% 0%
Native American Percentage   0% 0%
Two or More Races & Other
Percentage   0% 0%
DIVERSITY - NON-MANAGEMENT
GENDER REPRESENTATION - Non-Management
Female Percentage   11% 15%
Male
Percentage   89% 85%
RACIAL/ETHNIC GROUP REPRESENTATION - Non-Management
White Percentage   26% 28%
Hispanic Percentage   55% 55%
Black or African American Percentage   15% 16%
Asian or Pacific Islander Percentage   3% 0%
Native American Percentage   0% 0%
Two or More Races & Other Percentage   1% 0%

 

1 Total GHG emissions increased from 2020 to 2021 due to an increase in activity related to the disposal of more barrels of waste, which requires more electricity, fuel, and contracted

support.

2 Scope 1 emissions and related CO2e from fuel consumption restated for 2020 due to updated emissions factors and categorization of equipment.

3 Scope 2 emissions for 2020 restated for consistency in reporting methodology used for 2021.

4 Total emissions avoided through sequestration decreased from 2020 to 2021 due to the mix of waste received from customers (i.e., Milestone received more oil-based waste in 2020

vs. more water-based waste in 2021).

5 Emissions intensity calculated as follows: [Emissions ÷ (Liquids managed + Incidental Solids managed)]. Solids converted from cubic yards to barrels using 4.81 bbl/yd3.

6 Air quality VOC and HAP concentrations for 2020 restated to reflect consistency in reporting methodology.

7 Activity metric, total volume of incidental solids managed restated for 2020 based on a prior misapplied application of conversation factors.

ACTIVITY METRICS UNIT OF MEASURE  2021   2020
Number of customers Number 736 669
Active landfills Number 2 2
Active slurry injection drilling waste disposal facilities Number 8 7
Total volume of liquids managed Barrels 10,772,319 8,004,221
Total volume of incidental solids managed Cubic yards 256,175 79,1127