Clean Water Act discharge permit · NPDES WA0991012
WESTLAKE US 2 LLC, WESTLAKE CHLORO-VINYL CORPORATION, Longview, WA: NPDES WA0991012 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
WESTLAKE US 2 LLC, WESTLAKE CHLORO-VINYL CORPORATION, held by Unknown, holds NPDES permit WA0991012. EPA’s file records it issued August 16, 2019 and expiring August 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WESTLAKE US 2 LLC, WESTLAKE CHLORO-VINYL CORPORATION |
|---|---|
| Permittee as filed | Unknown |
| NPDES ID | WA0991012 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 16, 2019 |
| Expiration date | August 31, 2024 |
| Issuing agency | State |
| Address | Longview, WA 98632 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Longview-Frontal Columbia River (HUC 170800030402) |
| NAICS | 325180 – Other Basic Inorganic Chemical Manufacturing |
| SIC | 2812 – Alkalies And Chlorine |
| Other EPA IDs (FRS) | RCRA handler WAH000042579; ICIS-AIR source WASWC0005301500148 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 19Pollutants on file
- 0Under a numeric limit
- 19With a violation of any kind
- 1With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH, maximum | 0 | 2 | 1 | September 30, 2019 | |
| Solids, total suspended | 0 | 4 | 0 | ||
| Chloride [as Cl] | 0 | 4 | 0 | ||
| Mercury, total [as Hg] | 0 | 4 | 0 | ||
| E. coli | 0 | 3 | 0 | ||
| Solids, total dissolved | 0 | 3 | 0 | ||
| Flow | 0 | 3 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| Redox [oxidation reduction potential] | 0 | 2 | 0 | ||
| pH | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Turbidity | 0 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 1 | 0 | ||
| Oil and grease, hexane extr method | 0 | 1 | 0 | ||
| Copper, total [as Cu] | 0 | 1 | 0 | ||
| Zinc, total [as Zn] | 0 | 1 | 0 | ||
| Duration | 0 | 1 | 0 | ||
| Volume, total | 0 | 1 | 0 | ||
| pH, minimum | 0 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 21, 2025 | Monitoring Violations - Analysis not Conducted | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WA0991012 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.