Naval Base Ventura County San Nicolas Island
Active WDID 4 56I000858 San Nicolas Island, Ventura County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- San Nicolas Island, Ventura County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Pacific Ocean (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- None
- Monitoring results Evidence: facility-reported
- 181 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Dec 31, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 2 violation records · 2 enforcement actions
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 33.24645, -119.49917
- Precision
- 5 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- San Nicolas Island building 152, San Nicolas Island 93042
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- San Nicolas Island HUC12 180701070001
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- Naval Base Ventura County Point Mugu
- Primary industry (SIC)
- 4512-Air Transportation, Scheduled
- Secondary SIC
- 5171-Petroleum Bulk Stations and Terminals
- Tertiary SIC
- 4491-Marine Cargo Handling
- Application ID
- 192552
- NOI processed
- Mar 23, 1992
- Last certified
- May 12, 2025
- Facility size
- 13370 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 192552 | Industrial | Active | Mar 23, 1992 | — | May 12, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Pacific Ocean
- Discharges directly / indirectly
- N / N (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
290 official waterbodies share this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
181 distinct measurements across 15 parameters, most recent sample Dec 31, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Nov 14, 2025 | Dec 31, 2025 |
| 2024 | 3 | 3 | 0 | Feb 12, 2025 | Feb 12, 2025 |
| 2023 | 21 | 3 | 0 | Dec 21, 2023 | Feb 01, 2024 |
| 2022 | 18 | 3 | 0 | Nov 08, 2022 | Mar 10, 2023 |
| 2021 | 4 | 2 | 0 | Dec 14, 2021 | Dec 14, 2021 |
| 2020 | 9 | 3 | 0 | Jan 28, 2021 | Jan 28, 2021 |
| 2019 | 49 | 7 | 0 | Nov 20, 2019 | Mar 16, 2020 |
| 2018 | 23 | 7 | 0 | Jan 31, 2019 | Feb 13, 2019 |
| 2017 | 3 | 3 | 0 | Mar 21, 2018 | Mar 21, 2018 |
| 2016 | 34 | 13 | 0 | Jan 09, 2017 | Jan 20, 2017 |
| 2015 | 5 | 5 | 0 | Jan 06, 2016 | Jan 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Total Suspended Solids (TSS) | mg/L | 51 | 0 | Jan 06, 2016 | Dec 31, 2025 | Results |
| Oil and Grease | mg/L | 49 | 44 | Jan 06, 2016 | Dec 31, 2025 | Results |
| pH | SU | 46 | 0 | Jan 06, 2016 | Dec 31, 2025 | Results |
| Diesel Oil | mg/L | 12 | 6 | Jan 06, 2016 | Mar 16, 2020 | Results |
| Aluminum, Total Recoverable | ug/L | 4 | 0 | Feb 13, 2019 | Mar 16, 2020 | Results |
| Gasoline | mg/L | 4 | 4 | Jan 06, 2016 | Jan 20, 2017 | Results |
| Iron, Total Recoverable | mg/L | 4 | 0 | Feb 13, 2019 | Mar 16, 2020 | Results |
| Gasoline | ug/L | 3 | 3 | Feb 13, 2019 | Mar 16, 2020 | Results |
| Aluminum, Dissolved | ug/L | 1 | 1 | Jan 20, 2017 | Jan 20, 2017 | Results |
| Aluminum, Total | ug/L | 1 | 0 | Jan 20, 2017 | Jan 20, 2017 | Results |
| Iron, Dissolved | mg/L | 1 | 1 | Jan 20, 2017 | Jan 20, 2017 | Results |
| Iron, Total | mg/L | 1 | 0 | Jan 20, 2017 | Jan 20, 2017 | Results |
Show 4 more parameters
All results (181 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | Oil and Grease | DNQ 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363813 | |
| Dec 31, 2025 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363813 | |
| Dec 31, 2025 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363813 | |
| Dec 31, 2025 | pH | 8.2 | SU | Effluent | Qualifying Storm Event | A4500H | 1363813 | |
| Dec 31, 2025 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | A4500H | 1363813 | |
| Dec 31, 2025 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | A4500H | 1363813 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 35 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363813 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 22 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363813 | |
| Dec 31, 2025 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363813 | |
| Nov 14, 2025 | Oil and Grease | DNQ 2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358397 | |
| Nov 14, 2025 | pH | 8.7 | SU | Effluent | Qualifying Storm Event | A4500H | 1358397 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 250 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358397 | |
| Feb 12, 2025 | Oil and Grease | DNQ 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1326812 | |
| Feb 12, 2025 | pH | 8.56 | SU | Effluent | Qualifying Storm Event | A4500H | 1326812 | |
| Feb 12, 2025 | Total Suspended Solids (TSS) | 120 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326812 | |
| Feb 01, 2024 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281566 | |
| Feb 01, 2024 | Oil and Grease | ND 0 | mg/L | Internal | Qualifying Storm Event | E1664A | 1281566 | |
| Feb 01, 2024 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1281566 | |
| Feb 01, 2024 | pH | 8.78 | SU | Effluent | Qualifying Storm Event | A4500H | 1281566 | |
| Feb 01, 2024 | pH | 8.33 | SU | Internal | Qualifying Storm Event | A4500H | 1281566 | |
| Feb 01, 2024 | pH | 8.31 | SU | Effluent | Qualifying Storm Event | A4500H | 1281566 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281566 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 1400 | mg/L | Internal | Qualifying Storm Event | A2540D | 1281566 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 2400 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1281566 | |
| Dec 21, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272523 | |
| Dec 21, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272523 | |
| Dec 21, 2023 | Oil and Grease | ND 0 | mg/L | Internal | Qualifying Storm Event | E1664A | 1272523 | |
| Dec 21, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1272523 | |
| Dec 21, 2023 | pH | 8.61 | SU | Effluent | Qualifying Storm Event | A4500H | 1272523 | |
| Dec 21, 2023 | pH | 8.25 | SU | Effluent | Qualifying Storm Event | A4500H | 1272523 | |
| Dec 21, 2023 | pH | 8.35 | SU | Internal | Qualifying Storm Event | A4500H | 1272523 | |
| Dec 21, 2023 | pH | 8.02 | SU | Effluent | Qualifying Storm Event | A4500H | 1272523 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 39 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272523 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 26 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272523 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 270 | mg/L | Internal | Qualifying Storm Event | A2540D | 1272523 | |
| Dec 21, 2023 | Total Suspended Solids (TSS) | 9.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272523 | |
| Mar 10, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1233698 | |
| Mar 10, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1233698 | |
| Mar 10, 2023 | pH | 8.38 | SU | Effluent | Qualifying Storm Event | A4500H | 1233698 | |
| Mar 10, 2023 | pH | 7.72 | SU | Effluent | Qualifying Storm Event | A4500H | 1233698 | |
| Mar 10, 2023 | Total Suspended Solids (TSS) | 120 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233698 | |
| Mar 10, 2023 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1233698 | |
| Feb 24, 2023 | Oil and Grease | DNQ 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1229896 | |
| Feb 24, 2023 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1229896 | |
| Feb 24, 2023 | pH | 8.24 | SU | Effluent | Qualifying Storm Event | A4500H | 1229896 | |
| Feb 24, 2023 | pH | 7.69 | SU | Effluent | Qualifying Storm Event | A4500H | 1229896 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 190 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1229896 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1229896 | |
| Nov 08, 2022 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1217040 | |
| Nov 08, 2022 | Oil and Grease | DNQ 3.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1217040 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Aug 14, 2001 – Mar 04, 2009 | Oct 21, 2026 | All violations |
| Enforcement actions | 2 | 2 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 14, 2001 – Jun 23, 2010 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Aug 14, 2001 – Mar 10, 2022 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (17 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 07, 2026 | Annual reports | 1335543 | Annual report 2025 | — | |
| Jul 08, 2025 | Annual reports | 1294367 | Annual report 2024 | — | |
| Jun 28, 2024 | Annual reports | 1243460 | Annual report 2023 | — | |
| Jul 12, 2023 | Annual reports | 1189475 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1112869 | Annual report 2021 | — | |
| Mar 10, 2022 | Inspections | 2055205 | B Type compliance | Finalized | No Further Action |
| Jul 13, 2021 | Annual reports | 1068885 | Annual report 2020 | — | |
| Jul 08, 2020 | Annual reports | 986162 | Annual report 2019 | — | |
| Jul 01, 2019 | Annual reports | 953725 | Annual report 2018 | — | |
| Jul 11, 2018 | Annual reports | 939143 | Annual report 2017 | — | |
| Jul 06, 2017 | Annual reports | 878396 | Annual report 2016 | — | |
| Jun 29, 2016 | Annual reports | 841294 | Annual report 2015 | — | |
| Jun 23, 2010 | Enforcement actions | 404350 | SEL (Staff Enforcement Letter) | Historical | |
| Mar 04, 2009 | Violations | 843669 | Deficient BMP Implementation | Violation | Report |
| Aug 14, 2001 | Enforcement actions | 237146 | NTC (Notice to Comply) | Historical | UNKNOWN |
| Aug 14, 2001 | Inspections | 1736322 | B Type compliance | — | Additional Info Required |
| Aug 14, 2001 | Violations | 194513 | Deficient BMP Implementation | Violation | Inspection |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.