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Clean Water Act discharge permit · NPDES CA0037851

LAS GALLINAS VALLEY SD STP, San Rafael, CA: NPDES CA0037851 discharge permit, effluent exceedances, inspections, penalties

LAS GALLINAS VALLEY SD STP, held by Las Gallinas Valley Sanitary District, holds NPDES permit CA0037851, which discharges to Miller Creek. EPA’s file records it issued May 13, 2015 and expiring June 30, 2020. 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 filedLAS GALLINAS VALLEY SD STP
Permittee as filedLas Gallinas Valley Sanitary District
NPDES IDCA0037851
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 13, 2015
Expiration dateJune 30, 2020
AddressSan Rafael, CA 94903
Receiving waterMiller Creek

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

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 73 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Copper, total [as Cu]02626February 29, 2000314% over the limit
Coliform, total general02222October 31, 199999,999% over the limit
Mercury, total [as Hg]02619February 29, 20002,750% over the limit
Nitrogen, ammonia total [as N]143618December 31, 199880% over the limit
Chlorine, total residual22617November 30, 20242,147,483,650% over the limit
Copper, total recoverable41913February 28, 202591% over the limit
Solids, total suspended126512December 31, 2021260% over the limit
Solids, settleable02610February 29, 20001,900% over the limit
Enterococci2117December 31, 202599,999% over the limit
Cyanide, total [as CN]5115February 29, 2024100% over the limit
Solids, suspended percent removal274December 31, 202187% over the limit
Zinc, total [as Zn]044January 31, 200051% over the limit
Oil and grease8183May 31, 1999250% over the limit
BOD, 5-day, 20 deg. C12872April 30, 2007146% over the limit
pH482December 31, 2005
Lead, total [as Pb]022March 31, 199834% over the limit
Nickel, total [as Ni]022May 31, 199920% over the limit
Di[2-ethylhexyl] phthalate [DEHP]421January 31, 20161,650% over the limit
Silver, total [as Ag]011February 28, 19946% over the limit
Arsenic, total [as As]0190
Flow, in conduit or thru treatment plant6140
BOD, carbonaceous [5 day, 20 C]0140
Mercury, total recoverable6110
Nickel, total recoverable4100
Lead, total recoverable080
Selenium, total recoverable050
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss440
Oxygen, dissolved [DO]040
Sulfide, total [as S]040
Sulfide, dissolved, [as S]040
Chromium, hexavalent tot recoverable040
Temperature, water deg. centigrade230
BOD, 5-day, percent removal230
Cyanide, total recoverable030
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)420
Oxygen, dissolved percent saturation020
Ammonia, unionized020
BOD, carb-5 day, 20 deg C, percent removal020
% Survival Flow Through 96Hr Acute Pimephales promelas020
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)020
TCDD equivalents410
Arsenic, total recoverable010
Thallium, total recoverable010
Beryllium, total recoverable [as Be]010
Silver total recoverable010
Zinc, total recoverable010
Cadmium, total recoverable010
Antimony, total recoverable010
Methylmercury010
Nitrite + Nitrate total [as N]1200
Phosphorus, total [as P]1200
Nitrogen, inorganic total800
Nitrogen, total [as N]400
Nitrogen, Kjeldahl, total [as N]400
Phosphorus, dissolved reactive [drp as P]400
Polychlorinated biphenyls [PCBs], sum of Aroclors400
1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin200
1,2,3,7,8-Pentachlorodibenzo-p-dioxin200
1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin200
1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin200

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES CA0037851.

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.

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, CA0037851.

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How we handle your data → Privacy

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 CA0037851 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.