EmissionsLookup
Non-Compliance Clean Water Act

SOUTHERN MARIN WWTP

Quick Summary

  • Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
  • Assessed $25,500 in total penalties since records began.
Address
450 SYCAMORE AVENUE
MILL VALLEY, CA 94941
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County
MARIN County
Inspections
2 · last May 8, 2024
Total Penalties
$25,500 · last Mar 25, 2024
Registry ID
110002418848

Compliance Status (Last 12 Quarters)

Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.

8
Water (CWA)
Qtrs Non-Compliant

Discharge Limit Exceedances

Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.

Pollutant Violation Reported Limit Exceedance Period Status
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 14.00 mg/L 12.30 +14% Oct 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 17.00 mg/L 12.30 +38% Jul 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 16.50 mg/L 12.30 +34% Apr 2023 Open
BOD, 5-day, percent removal DMR, Limited - Numeric Violation 77.00 % 85.00 +53% Mar 2023 Open
Solids, suspended percent removal DMR, Limited - Numeric Violation 80.00 % 85.00 +33% Mar 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 22.00 mg/L 12.30 +79% Feb 2023 Resolved
BOD, 5-day, 20 deg. C DMR, Limited - Numeric Violation 49.00 mg/L 45.00 +9% Feb 2023 Open
Coliform, total general DMR, Limited - Numeric Violation 16,000.00 MPN/100mL 10,000.00 +60% Jan 2023 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 20.72 mg/L 12.30 +68% Sep 2022 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 33.00 mg/L 32.00 +3% Aug 2022 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 27.76 mg/L 12.30 +126% Aug 2022 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 21.02 mg/L 12.30 +71% Jul 2022 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 22.67 mg/L 12.30 +84% Jun 2022 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 29.00 mg/L 12.30 +136% May 2022 Resolved
Enterococci DMR, Limited - Numeric Violation 67.90 MPN/100mL 35.00 +94% Oct 2021 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 13.00 mg/L 12.30 +6% Sep 2021 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 14.40 mg/L 12.30 +17% Jun 2021 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 22.13 mg/L 12.30 +80% Dec 2020 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 37.00 mg/L 32.00 +16% Dec 2020 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 12.45 mg/L 12.30 +1% Nov 2020 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 16.79 mg/L 12.30 +37% Sep 2020 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 15.55 mg/L 12.30 +26% Aug 2020 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 13.00 mg/L 12.30 +6% Nov 2019 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 18.88 mg/L 12.30 +53% Jul 2019 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Overdue 18.88 mg/L 12.30 +53% Jul 2019 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 35.00 mg/L 32.00 +9% Jun 2019 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 24.73 mg/L 12.30 +101% Jun 2019 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 38.00 mg/L 32.00 +19% May 2019 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 26.27 mg/L 12.30 +114% May 2019 Resolved
BOD, 5-day, percent removal DMR, Limited - Numeric Violation 84.00 % 85.00 +7% Feb 2019 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 22.20 mg/L 12.30 +80% Sep 2018 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 20.10 mg/L 12.30 +63% Aug 2018 Resolved
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 18.17 mg/L 12.30 +48% Jul 2018 Resolved
BOD, 5-day, 20 deg. C DMR, Limited - Numeric Violation 47.00 mg/L 45.00 +4% Mar 2018 Open
Nitrogen, ammonia total [as N] DMR, Limited - Numeric Violation 13.00 mg/L 12.30 +6% Jun 2016 Open

Enforcement Actions

Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.

State CWA Penalty AO
Clean Water Act · Case CA-N00001116
State CWA Penalty AO
Clean Water Act · Case CA-CFEA455251 · Mar 25, 2024
$16,500
State CWA Penalty AO
Clean Water Act · Case CA-CFEA448316 · Sep 22, 2022
$9,000
State CWA Penalty AO
Clean Water Act · Case CA-CFEA439589 · Nov 11, 2020
State CWA Penalty AO
Clean Water Act · Case CA-CFEA435437 · Feb 4, 2020
$24,000
State CWA Penalty AO
Clean Water Act · Case CA-2009-1094 · Apr 8, 2009
Administrative - Formal
· Case 09-2008-1506 · Apr 10, 2008
State CWA Non Penalty AO
Clean Water Act · Case CA-N00004198 · Feb 8, 2008
State CWA Non Penalty AO
Clean Water Act · Case CA-N00003965 · Aug 8, 2007

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