Clean Water Act discharge permit · NPDES COR901602
MKS INSTRUMENTS INC BROOMFIELD, Broomfield, CO: NPDES COR901602 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MKS INSTRUMENTS INC BROOMFIELD, held by MKS Instruments Inc, holds NPDES permit COR901602, which discharges to Unnamed Tributary To Big Dry Creek. EPA’s file records it issued January 21, 2022 and expiring December 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MKS INSTRUMENTS INC BROOMFIELD |
|---|---|
| Permittee as filed | MKS Instruments Inc |
| NPDES ID | COR901602 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | January 21, 2022 |
| Expiration date | December 31, 2025 |
| Address | Broomfield, CO 80020 |
| Receiving water | unnamed tributary to Big Dry Creek |
| Subwatershed | Middle Big Dry Creek (HUC 101900030407) |
| Other EPA IDs (FRS) | RCRA handler COR000252114 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 45Pollutants on file
- 4Under a numeric limit
- 45With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 3 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 4 | 0 | ||
| Iron, total [as Fe] | 2 | 4 | 0 | ||
| Aluminum, total [as Al] | 2 | 4 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 0 | 1 | 0 | ||
| Perfluorobutanoic acid (PFBA) | 0 | 1 | 0 | ||
| Perfluorooctanesulfonamide (PFOSA) | 0 | 1 | 0 | ||
| Perfluoropentanoic acid (PFPeA) | 0 | 1 | 0 | ||
| Perfluorohexanoic acid (PFHxA) | 0 | 1 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 0 | 1 | 0 | ||
| Perfluorononanoic acid (PFNA) | 0 | 1 | 0 | ||
| Perfluorodecanoic acid (PFDA) | 0 | 1 | 0 | ||
| Perfluoroundecanoic acid (PFUnA) | 0 | 1 | 0 | ||
| Perfluorododecanoic acid (PFDoA) | 0 | 1 | 0 | ||
| Perfluorotridecanoic acid (PFTrDA) | 0 | 1 | 0 | ||
| Perfluorotetradecanoic acid (PFTeDA) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | 0 | 1 | 0 | ||
| Perfluorobutanesulfonic acid (PFBS) | 0 | 1 | 0 | ||
| Perfluorodecanesulfonic acid (PFDS) | 0 | 1 | 0 | ||
| Perfluoroheptanesulfonic acid (PFHpS) | 0 | 1 | 0 | ||
| Perfluorohexanesulfonic acid (PFHxS) | 0 | 1 | 0 | ||
| Perfluorooctanesulfonic acid (PFOS) | 0 | 1 | 0 | ||
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | 0 | 1 | 0 | ||
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | 0 | 1 | 0 | ||
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | 0 | 1 | 0 | ||
| Perfluoropentanesulfonic acid (PFPeS) | 0 | 1 | 0 | ||
| Perfluorononanesulfonic acid (PFNS) | 0 | 1 | 0 | ||
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | 0 | 1 | 0 | ||
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | 0 | 1 | 0 | ||
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | 0 | 1 | 0 | ||
| Perfluorododecanesulfonic acid (PFDoS) | 0 | 1 | 0 | ||
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamide (NMeFOSA) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamide (NEtFOSA) | 0 | 1 | 0 | ||
| PFAS Sum | 0 | 1 | 0 | ||
| 3-Perfluoropropyl propanoic acid (3:3 FTCA) | 0 | 1 | 0 | ||
| Perfluoro-3-methoxypropanoic acid (PFMPA) | 0 | 1 | 0 | ||
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS) | 0 | 1 | 0 | ||
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | 0 | 1 | 0 | ||
| 3-Perfluoroheptyl propanoic acid (7:3 FTCA) | 0 | 1 | 0 | ||
| Perfluoro-4-methoxybutanoic acid (PFMBA) | 0 | 1 | 0 | ||
| 2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA) | 0 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR901602.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES COR901602.
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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.