Clean Water Act discharge permit · NPDES CA0083348
UC DAVIS, CENTER FOR AQUATIC BIOLOGY AND AQUACULTURE, Yolo County, CA: NPDES CA0083348 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 25Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
UC DAVIS, CENTER FOR AQUATIC BIOLOGY AND AQUACULTURE, held by UC DAVIS, holds NPDES permit CA0083348, which discharges to S. Fork Putah Creek. EPA’s file records it issued December 8, 2006 and expiring December 1, 2011. 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 | UC DAVIS, CENTER FOR AQUATIC BIOLOGY AND AQUACULTURE |
|---|---|
| Permittee as filed | UC DAVIS |
| NPDES ID | CA0083348 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 8, 2006 |
| Expiration date | December 1, 2011 |
| Address | Yolo County, CA 95616 |
| Receiving water | S. FORK PUTAH CREEK |
| Subwatershed | Putah Creek-South Fork Putah Creek (HUC 180201620504) |
| Other EPA IDs (FRS) | RCRA handler CAD047120084; ICIS-AIR source CAYSA000061130025C |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 192Pollutants on file
- 25Under a numeric limit
- 174With a violation of any kind
- 3With 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; the 60 with the most exceedances of 192 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Chromium, hexavalent tot recoverable | 0 | 12 | 12 | May 31, 2017 | 135% over the limit |
| Specific conductance | 2 | 4 | 3 | December 31, 2017 | 9% over the limit |
| Solids, settleable | 2 | 3 | 2 | June 30, 2017 | 100% over the limit |
| Solids, total suspended | 10 | 10 | 0 | ||
| Bolero | 0 | 3 | 0 | ||
| cis-1,2-Dichloroethene | 0 | 3 | 0 | ||
| Selenium, total recoverable | 8 | 2 | 0 | ||
| Cadmium, total recoverable | 8 | 2 | 0 | ||
| Mercury, total recoverable | 8 | 2 | 0 | ||
| Chlorpyrifos | 8 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 2 | 0 | ||
| Nitrogen, nitrite total [as N] | 0 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 | ||
| Cyanide, total [as CN] | 0 | 2 | 0 | ||
| Sulfite [as SO3] | 0 | 2 | 0 | ||
| Sulfide, total [as S] | 0 | 2 | 0 | ||
| Sulfate, total [as SO4] | 0 | 2 | 0 | ||
| Asbestos | 0 | 2 | 0 | ||
| Fluoride, total [as F] | 0 | 2 | 0 | ||
| Arsenic, total recoverable | 0 | 2 | 0 | ||
| Iron, total recoverable | 0 | 2 | 0 | ||
| Thallium, total recoverable | 0 | 2 | 0 | ||
| Beryllium, total recoverable [as Be] | 0 | 2 | 0 | ||
| Boron, total recoverable | 0 | 2 | 0 | ||
| Barium, total recoverable | 0 | 2 | 0 | ||
| Chromium, trivalent [as Cr] | 0 | 2 | 0 | ||
| Nickel, total recoverable | 0 | 2 | 0 | ||
| Silver total recoverable | 0 | 2 | 0 | ||
| Zinc, total recoverable | 0 | 2 | 0 | ||
| Aluminum, total recoverable | 0 | 2 | 0 | ||
| Lead, total recoverable | 0 | 2 | 0 | ||
| Copper, total recoverable | 0 | 2 | 0 | ||
| Antimony, total recoverable | 0 | 2 | 0 | ||
| Foaming agents | 0 | 2 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 0 | 2 | 0 | ||
| Dichloromethane | 0 | 2 | 0 | ||
| Tributyltin | 0 | 2 | 0 | ||
| Diquat | 0 | 2 | 0 | ||
| Manganese, total recoverable | 0 | 2 | 0 | ||
| Methyl tert-butyl ether [MTBE] | 0 | 2 | 0 | ||
| Dinoseb | 0 | 2 | 0 | ||
| Dichlorobromomethane | 0 | 2 | 0 | ||
| Carbon tetrachloride | 0 | 2 | 0 | ||
| 1,2-Dichloroethane | 0 | 2 | 0 | ||
| Bromoform | 0 | 2 | 0 | ||
| Dibromochloromethane | 0 | 2 | 0 | ||
| Chloroform | 0 | 2 | 0 | ||
| Toluene | 0 | 2 | 0 | ||
| Benzene | 0 | 2 | 0 | ||
| .delta.-BHC | 0 | 2 | 0 | ||
| Acenaphthylene | 0 | 2 | 0 | ||
| Acenaphthene | 0 | 2 | 0 | ||
| Acrolein | 0 | 2 | 0 | ||
| Acrylonitrile | 0 | 2 | 0 | ||
| Anthracene | 0 | 2 | 0 | ||
| Benzo[b]fluoranthene | 0 | 2 | 0 | ||
| Benzo[k]fluoranthene | 0 | 2 | 0 | ||
| Benzo[a]pyrene | 0 | 2 | 0 | ||
| Bis[2-chloroethyl] ether | 0 | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CA0083348.
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 CA0083348 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.