Clean Water Act discharge permit · NPDES WYR320893
QUARRY #3 (LQD ET1566), Leo, WY: NPDES WYR320893 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
QUARRY #3 (LQD ET1566), held by Stone Royale LLC, holds NPDES permit WYR320893. EPA’s file records it issued March 21, 2025 and expiring December 31, 2025.
QUARRY #3 (LQD ET1566), Leo, Wyoming: Coverage under a general permit WYR320893, held by Stone Royale LLC; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued March 21, 2025, term to December 31, 2025, by Wyoming Department of Environmental Quality.
Wyoming holds 209 Industrial stormwater coverages of this permit type in EPA’s file; 197 were issued before WYR320893.
Coverages issued nearest WYR320893
- January 1, 2025: POWDER RIVER MINE (LQD PT0754), (Unknown City), WYR320874, held by Quality Agg & Construction, Inc.
- January 1, 2025: DALY PIT (LQD ET1652), (Unknown City), WYR320886, held by K & M Mining, LLC
- January 1, 2025: QUARRY #2 (LQD SP0800), (Unknown City), WYR320892, held by Strid Marble and Granite Company
- January 1, 2025: LOST CREEK PIT (LQD ET1577), (Unknown City), WYR320930, held by K&M Mining, LLC
- January 1, 2025: FINNERTY PIT (LQD ET1506), (Unknown City), WYR320945, held by Alexander Construction Co.
- April 1, 2025: DULL CENTER GRAVEL PIT, (Unknown City), WYR320943, held by USDA Forest Service
- April 8, 2025: DRILLING TOOLS INTERNATIONAL, INC., Casper, WYR001523, held by Drilling Tools International, Inc.
- May 28, 2025: NOV TUBOSCOPE WELLBORE TECHNOLOGIES, Casper, WYR000942, held by National Oilwell Varco, L.P.
- May 28, 2025: NOV MOBILE RIG, Casper, WYR001315, held by National Oilwell Varco, L.P.
- May 29, 2025: NOV TUBOSCOPE ZERO ROAD, Casper, WYR001069, held by National Oilwell Varco, L.P.
QUARRY #3 (LQD ET1566) among its neighbors
EPA’s permit file holds 1 discharge permits in the Gooseberry Creek-Sage Creek subwatershed (HUC 101800030402), WYR320893 among them. Its county holds 42, 0 of them major permits; WYR320893 is a minor permit.
What the register holds for QUARRY #3 (LQD ET1566): its NPDES ID, its permit type and status, its dates, its address in Leo, Wyoming. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES WYR320893.
Identity
| Facility as filed | QUARRY #3 (LQD ET1566) |
|---|---|
| Permittee as filed | Stone Royale LLC |
| NPDES ID | WYR320893 |
| 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 | March 21, 2025 |
| Expiration date | December 31, 2025 |
| Issuing agency | Wyoming Department of Environmental Quality |
| Address | Leo, WY |
| Subwatershed | Gooseberry Creek-Sage Creek (HUC 101800030402) |
| SIC | 1411 – Dimension Stone |
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 WYR320893.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WYR320893.
Inspections
EPA’s inspection file holds no inspection for NPDES WYR320893.
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 WYR320893.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WYR320893.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.