Clean Water Act discharge permit · NPDES CA0038636
HAYWARD MARSH, Hayward, CA: NPDES CA0038636 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 140Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HAYWARD MARSH, held by EAST BAY REGIONAL PARK DISTR, holds NPDES permit CA0038636, which discharges to Lower San Francisco Bay. EPA’s file records it issued May 10, 2006 and expiring May 9, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HAYWARD MARSH |
|---|---|
| Permittee as filed | EAST BAY REGIONAL PARK DISTR |
| NPDES ID | CA0038636 |
| 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 |
| Program | Publicly owned treatment works |
| Issued | May 10, 2006 |
| Expiration date | May 9, 2011 |
| Address | Hayward, CA 94544 |
| Receiving water | LOWER SAN FRANCISCO BAY |
| Subwatershed | Ward Creek-Frontal San Francisco Bay Estuaries (HUC 180500040804) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 145Pollutants on file
- 140Under a numeric limit
- 20With 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; the 60 with the most exceedances of 145 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 13 | 0 | ||
| Benzo[b]fluoranthene | 1 | 12 | 0 | ||
| Benzo[k]fluoranthene | 1 | 12 | 0 | ||
| Benzo[a]anthracene | 1 | 12 | 0 | ||
| Phosphorus, total [as P] | 4 | 8 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 8 | 0 | ||
| Nitrogen, inorganic total | 0 | 8 | 0 | ||
| pH | 4 | 6 | 0 | ||
| Nitrogen, nitrate total [as N] | 4 | 3 | 0 | ||
| Salinity | 2 | 3 | 0 | ||
| Solids, total suspended | 4 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Coliform, fecal general | 2 | 2 | 0 | ||
| Sulfide, total [as S] | 0 | 2 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 0 | 2 | 0 | ||
| Temperature, water deg. centigrade | 2 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 1 | 0 | ||
| Oxygen, dissolved percent saturation | 2 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 1 | 0 | ||
| Chlorine, total residual | 0 | 1 | 0 | ||
| Cyanide, total [as CN] | 10 | 0 | 0 | ||
| Copper, total recoverable | 10 | 0 | 0 | ||
| Nickel, total recoverable | 7 | 0 | 0 | ||
| 4,4'-DDD | 7 | 0 | 0 | ||
| Mercury, total recoverable | 7 | 0 | 0 | ||
| Heptachlor | 5 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 | ||
| Nitrogen, ammonia, tot unionized [as N] | 2 | 0 | 0 | ||
| Heptachlor epoxide | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 1 | 0 | 0 | ||
| Selenium, total recoverable | 1 | 0 | 0 | ||
| Thallium, total recoverable | 1 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 1 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 0 | 0 | ||
| Chromium, trivalent [as Cr] | 1 | 0 | 0 | ||
| Silver total recoverable | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Lead, total recoverable | 1 | 0 | 0 | ||
| Antimony, total recoverable | 1 | 0 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 1 | 0 | 0 | ||
| Dichlorobromomethane | 1 | 0 | 0 | ||
| Carbon tetrachloride | 1 | 0 | 0 | ||
| 1,2-Dichloroethane | 1 | 0 | 0 | ||
| Bromoform | 1 | 0 | 0 | ||
| Dibromochloromethane | 1 | 0 | 0 | ||
| Chloroform | 1 | 0 | 0 | ||
| Toluene | 1 | 0 | 0 | ||
| Benzene | 1 | 0 | 0 | ||
| .delta.-BHC | 1 | 0 | 0 | ||
| Acenaphthylene | 1 | 0 | 0 | ||
| Acenaphthene | 1 | 0 | 0 | ||
| Acrolein | 1 | 0 | 0 | ||
| Acrylonitrile | 1 | 0 | 0 | ||
| Anthracene | 1 | 0 | 0 | ||
| Benzo[a]pyrene | 1 | 0 | 0 | ||
| Bis[2-chloroethyl] ether | 1 | 0 | 0 | ||
| Bis[2-chloroethoxy]methane | 1 | 0 | 0 | ||
| Bis[2-chloroisopropyl] ether | 1 | 0 | 0 | ||
| Butyl benzyl phthalate | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES CA0038636.
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 CA0038636.
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 14, 2026.