EPA-regulated facilities in Laramie County, WY

There are 1,407 EPA-regulated facilities inside Laramie County, Wyoming. The most common kinds are water discharge (741), hazardous waste (370), air emissions (286). 7 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 22 have a violation on record. Penalties over the last five years total $5.8M across 3 sites.

Open the map of Laramie County

1,407facilities in the county

7in significant noncompliance

22with a violation on record

$5.8Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	370
Treatment, storage or disposal	1
Large quantity generators	4
Small quantity generators	178
Transporters	10
Chemical (RMP/TRI)	24
Superfund	13
Air emissions	286
Major sources	8
Synthetic minor sources	6
Minor sources	55
Water discharge	741
Major permits	3
Minor permits	361
Drinking water systems	57
Greenhouse gas reporters	7
Data centers	33
Scrap yards	4
Recycling centers	1

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

DYNO NOBEL INC-CHEYENNE PLANT 8305 OTTO RD, CHEYENNE, WY, 82001 Significant noncompliance · $415k in penalties
TRI-STATE OIL RECLAIMERS 1770 OTTO RD, CHEYENNE, WY, 82001 Significant noncompliance · $56k in penalties
EVERGREEN MOBILE HOME PARK 4504 GREENFIELD COURT, CHEYENNE, WY, 82001 Significant noncompliance
CYS13 DATA CENTER UNKNOWN, UNKNOWN, WY, 00000 Significant noncompliance
CHEYENNE REGIONAL AIRPORT 1401 AIRPORT PARKWAY, CHEYENNE, WY, 82001 Significant noncompliance
WYOMING GAME AND FISH (2021) 5400 BISHOP BLVD, CHEYENNE, WY, 82006 Significant noncompliance
LCCC STUDENT SERVICES CENTER UNKNOWN, UNKNOWN, WY, 00000 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UNITED PARCEL SERVICE 1920 WESTLAND ROAD, CHEYENNE, WY, 82001 $5.3M in penalties

Superfund sites

WARREN F.E. AFB ATLAS D MISSILE SITE # 2 TWENTY FIVE MILES NORTHEAST OF CHEYENNE, CHEYENNE, WY, 82009
U S AIR FORCE WYOMING AIR NATIONAL GUARD 217 DELL RANGE BOULEVARD, CHEYENNE, WY, 82009
WYOMING ARMY NG MRS PGM 3919 CENTRAL AVENUE, CHEYENNE, WY, 82001
CHEYENNE PCE PLUME 26TH & PIONEER, CHEYENNE, WY, 82001
FT. F.E. WARREN TARGET AND MANEUVER RANGE NW SIDE OF F.E. WARREN AIR FORCE BASE, CHEYENNE, WY, 82001
F.E. WARREN AIR FORCE BASE I-25 AND RANDALL AVE., CHEYENNE, WY, 82005
TATOOINE INDUSTRIES 4390 I-80 SERVICE ROAD, BURNS, WY, 82053
HIGH PLAINS GRASSLAND RESEARCH STATION 8408 HILDRETH RD, CHEYENNE, WY, 82009
WARREN F.E. AFB ATLAS D MISSILE SITE # 3 NINE MILES SOUTH OF HILLSDALE, HILLSDALE, WY, 82060
WARREN F.E. AFB ATLAS D MISSILE SITE # 1 FIFTEEN MILES NORTHWEST OF CHEYENNE, CHEYENNE, WY, 82009

Data centers

Unnamed data center (OSM)
CYS13 DATA CENTER UNKNOWN, UNKNOWN, WY, 00000 Significant noncompliance
Unnamed data center (OSM)
CYS14 DATA CENTER 7700 COMMERCE CIRCLE, CHEYENNE, WY, 82007
UNIV CORP OF ATMOS RES NCAR WY SUPERCOMP 8120 VETA DRIVE, CHEYENNE, WY, 82009
MICROSOFT CHEYENNE DATA CENTER CYS17 - CYS22 SECTION 28, 13N, 66W, LARAMIE, WY, 82001
1547 GREEN HOUSE DATA CENTER 304 PROGRESS CIRCLE, CHEYENNE, WY, 82007
CYS43 DATA CENTER (UNKNOWN ADDRESS), (UNKNOWN CITY), WY, 00000
MICROSOFT CHEYENNE DATA CENTER CYS13 & CYS14 (MICROSOFT CORP) SECTION 36, 14N, 66W, LARAMIE COUNTY, WY, 82007
MICROSOFT CHEYENNE DATA CENTER CYS17 - CYS22 (MICROSOFT CORP) S28-T13N-R66W, LARAMIE COUNTY, WY, 82007

Towns in Laramie County

Cheyenne

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.