Clean Water Act discharge permit · NPDES WYR320620

LAGOON ROAD YARD, Rock Springs, WY: NPDES WYR320620 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

LAGOON ROAD YARD, held by Sweetwater County, holds NPDES permit WYR320620. EPA’s file records it issued January 1, 2025 and expiring December 31, 2025.

LAGOON ROAD YARD, Rock Springs, Wyoming: Coverage under a general permit WYR320620, held by Sweetwater County; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2025, term to December 31, 2025, by Wyoming Department of Environmental Quality.

January 13, 2020: WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP (ST6).
January 13, 2020: WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP (ST6).
January 12, 2020: WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP (ST6).

Wyoming holds 209 Industrial stormwater coverages of this permit type in EPA’s file; 176 were issued before WYR320620. Sweetwater County holds 2 permits in Wyoming.

Other permits held by Sweetwater County

SWEETWATER COUNTY ROAD & BRIDGE MAINTENANCE SHOP, Rock Springs: WYR001226, issued May 14, 2024

Coverages issued nearest WYR320620

January 1, 2025: BLACK HILLS BENTONITE THORNTON PLANT, (Unknown City), WYR320216, held by Black Hills Bentonite, LLC
January 1, 2025: WEAVER QUARRY (LQD PT0658), (Unknown City), WYR320342, held by CEMEX Construction Materials South, LLC
January 1, 2025: TUFFA PIT (LQD PT0299), (Unknown City), WYR320343, held by Mountain Cement Company LLC
January 1, 2025: BLM PIT (AKA BLM 1); (LQD SP0653), (Unknown City), WYR320567, held by Big Horn Redi Mix, Inc.
January 1, 2025: ROTH PIT (WILLY PIT, PT0803), (Unknown City), WYR320617, held by Big Horn Redi Mix, Inc.
January 1, 2025: ROSETTA PIT (LQD ET1523), (Unknown City), WYR320690, held by E-Cubed Industries, LLC
January 1, 2025: JONATHON QUARRY (LQD PT0790), Laramie, WYR320728, held by Pete Lien & Sons Inc.
January 1, 2025: HUGHES PIT (LQD SP0814), (Unknown City), WYR320763, held by E-Cubed Industries, LLC
January 1, 2025: BLACK ROCK PIT (SP0726), (Unknown City), WYR320846, held by Big Horn Redi Mix, Inc.
January 1, 2025: ESTERBROOK HILL GRAVEL SITE, (Unknown City), WYR320857, held by USDA Forest Service-Medicine Bow

LAGOON ROAD YARD among its neighbors

EPA’s permit file holds 6 discharge permits in the 140401050506-Bitter Creek subwatershed (HUC 140401050506), WYR320620 among them. Its county holds 61, 2 of them major permits; WYR320620 is a minor permit.

Other permits in the 140401050506-Bitter Creek subwatershed (HUC 140401050506)

ASPHALT PLANT, LEWIS & LEWIS, INC., Rock Springs: WYR001613, minor permit, permit term to September 30, 2025
CUDD PRESSURE CONTROL, INC., Rock Springs: WYR001207, minor permit, permit term to May 31, 2024
JACAM CATALYST - ROCK SPRINGS, Rock Springs: WYR001538, minor permit, permit term to May 31, 2024
ROCK SPRINGS LANDFILL, Rock Springs: WYR001004, minor permit, permit term to May 31, 2024
TEMPORARY FILL AND VERTICAL EXPANSION AREAS CLOSURE, Rock Springs: WYR106102, minor permit, permit term to February 1, 2020

Identity

Facility as filed	LAGOON ROAD YARD
Permittee as filed	Sweetwater County
NPDES ID	WYR320620
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	January 1, 2025
Expiration date	December 31, 2025
Issuing agency	Wyoming Department of Environmental Quality
Address	Rock Springs, WY 82901
Subwatershed	140401050506-Bitter Creek (HUC 140401050506)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES WYR320620.

Inspections, violations and enforcement

3Single-event violations

Date	What EPA recorded	Agency
January 13, 2020	WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP	ST6
January 13, 2020	WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP	ST6
January 12, 2020	WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES WYR320620.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES WYR320620.

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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit WYR320620 for LAGOON ROAD YARD in Rock Springs, WY, held by Sweetwater County under an administratively continued industrial stormwater general permit issued by the Wyoming Department of Environmental Quality. The page lists zero pollutants on file, zero pollutants under a numeric limit, and zero pollutants with an effluent exceedance, within subwatershed 140401050506-Bitter Creek (HUC 140401050506).