ALPHA RIDGE LANDFILL
MARRIOTTSVILLE, MD · HOWARD COUNTY · NAICS 562212
Data updated May 2026
ALPHA RIDGE LANDFILL ranks among smaller GHGRP totals (#6,157 of 8,713 nationally; #49 of 77 in MD), a lower-footprint comparator in Waste.
- National rank #6,157 of 8,713 GHGRP facilities
- #49 of 77 in MD
- #944 of 1,433 in Waste
- 100% of HOWARD COUNTY OF MARYLAND (INC) parent CO₂e
- 2023 mix: 99.8% non-CO₂ (CH₄-led)
- -1.2% since 2011
ALPHA RIDGE LANDFILL vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
25,772 6157th of 8713 higher than 2,556 of 8,713 facilities
GHGRP facilities, banded by latest reported CO₂e (MT)
Each bar is a band; taller bars hold more facilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · 2023
Facility footprint context
This site accounts for 100% of HOWARD COUNTY OF MARYLAND (INC) reported parent CO₂e (26K MT of 26K MT ). Inside the EPA Waste sector it ranks #944 of 1,433 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 26K MT CO₂e reported for 2023, non-CO₂ gases are 99.8% , led by CH₄ at 99.8% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 0.2%
- 45 MT
- CH₄
- 99.8%
- 26K MT
- N₂O
- -
- n/r
Annual emissions history
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 25,772 |
| 2022 | 21,115 |
| 2021 | 16,060 |
| 2020 | 16,106 |
| 2019 | 15,696 |
| 2018 | 19,373 |
| 2017 | 23,331 |
| 2016 | 28,554 |
| 2015 | 29,709 |
| 2014 | 31,275 |
| 2013 | 32,301 |
| 2012 | 36,548 |
| 2011 | 26,095 |
Facility insight: ALPHA RIDGE LANDFILL
ALPHA RIDGE LANDFILL (ID 1007291) reported 26K MT CO₂e for 2023 in HOWARD COUNTY, MD (#6,157 of 8,713 by latest CO₂e).
Over 13 years (2011–2023), emissions stayed within a narrow band around 26K MT CO₂e (peak 37K MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2012 at 37K MT CO2e; latest 2023 sits 29.5% below that peak (26K MT). The largest year-to-year move was 2011→2012 (+40.1%, 10K MT).
Frequently Asked Questions
Where does ALPHA RIDGE LANDFILL rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, ALPHA RIDGE LANDFILL ranks #6,157 of 8,713 reporting facilities by latest reported CO₂e, and #49 of 77 facilities in MD (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than ALPHA RIDGE LANDFILL? ▼
ALPHA RIDGE LANDFILL's 26K MT CO₂e is higher than 2,556 of the 8,713 GHGRP facilities with reported emissions (29%), an exact count from the full corpus, not an estimate.
How much CO2 does ALPHA RIDGE LANDFILL emit? ▼
ALPHA RIDGE LANDFILL reported 26K MT CO2e in 2023.
What share of HOWARD COUNTY OF MARYLAND (INC) does ALPHA RIDGE LANDFILL represent? ▼
ALPHA RIDGE LANDFILL accounts for 100% of HOWARD COUNTY OF MARYLAND (INC)'s reported GHGRP CO₂e (26K MT of 26K MT).
What is ALPHA RIDGE LANDFILL's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 99.8% of reported CO₂e at ALPHA RIDGE LANDFILL, with CH₄ the larger non-CO₂ share at 99.8% (CO₂ 0.2%). Shares use the facility's GHGRP gas components for that year.
Where does ALPHA RIDGE LANDFILL rank inside Waste? ▼
Among EPA GHGRP facilities tagged Waste, ALPHA RIDGE LANDFILL ranks #944 of 1,433 by latest reported CO₂e.
Is ALPHA RIDGE LANDFILL reducing emissions? ▼
Over 13 reporting years (2011–2023), ALPHA RIDGE LANDFILL's emissions have decreased by 1.2%. Emissions have remained relatively stable.
Nationwide facilities with similar CO₂e or sector
Lower-footprint peers outside MD: nearest CO₂e totals and same-sector reporters for context.
Similar reported CO₂e
Nearest latest-year facility totals outside MD (26K MT here).
Similar Waste CO₂e
Nearest same-sector facility totals outside MD.