San Luis Obispo Cnty Oceano Airport
Active WDID 3 40I002538 Oceano, San Luis Obispo County Region 3 · Central Coast
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Oceano, San Luis Obispo County
- Region 3 · Central Coast · Location · Statewide map
- Receiving water
- Meadow Creek (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
- 4 waterbodies; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 54 distinct results, 9 reporting years (2016 to 2025)
- Most recent sample Feb 16, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 0 violation records · 0 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
- 35.10467, -120.62514
- 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
- 561 Airpark Dr, Oceano 93445
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Meadow Creek-Frontal Pacific Ocean HUC12 180600060705
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
- San Luis Obispo County Regional Airport
- Primary industry (SIC)
- 4581-Airports, Flying Fields, and Airport Terminal Services
- Application ID
- 185693
- NOI processed
- Mar 31, 1992
- Last certified
- Apr 08, 2021
- Facility size
- 58 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 185693 | Industrial | Active | Mar 31, 1992 | — | Apr 08, 2021 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Meadow Creek
- Discharges directly / indirectly
- N / Y (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
1 official waterbody shares 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Arroyo Grande Creek (below Lopez Lake) CAR3103101419980804113947 | 538 m | listed | 11 |
| Pacific Ocean Shoreline at Pismo State Beach, Oceano (San Luis Obispo County) at Pier Ave CAC3103102520100525151845 | 592 m | not listed | 0 |
| Pacific Ocean Shoreline at Pismo State Beach, Oceano (San Luis Obispo County) south of Pier at end of Strand Way CAC3103102520100525145207 | 677 m | not listed | 0 |
| Pacific Ocean Shoreline at Pismo State Beach, Oceano (San Luis Obispo County) 350 yards north of Pier Ave CAC3103102520100525145951 | 720 m | not listed | 0 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
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.
54 distinct measurements across 7 parameters, most recent sample Feb 16, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 3 | 3 | 0 | Feb 16, 2026 | Feb 16, 2026 |
| 2024 | 6 | 3 | 0 | Dec 12, 2024 | Mar 05, 2025 |
| 2023 | 6 | 3 | 0 | Jan 18, 2024 | Jan 24, 2024 |
| 2022 | 3 | 3 | 0 | Mar 10, 2023 | Mar 10, 2023 |
| 2020 | 3 | 3 | 0 | Jan 29, 2021 | Jan 29, 2021 |
| 2019 | 4 | 4 | 0 | Mar 11, 2020 | Mar 11, 2020 |
| 2018 | 11 | 6 | 0 | Jan 31, 2019 | Mar 02, 2019 |
| 2017 | 6 | 6 | 0 | Mar 21, 2018 | Mar 21, 2018 |
| 2016 | 12 | 6 | 0 | Jan 09, 2017 | Jan 22, 2017 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 13 | 11 | Jan 09, 2017 | Feb 16, 2026 | Results |
| pH | SU | 13 | 0 | Jan 09, 2017 | Feb 16, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 13 | 4 | Jan 09, 2017 | Feb 16, 2026 | Results |
| Ammonia, Total (as N) | mg/L | 5 | 3 | Jan 09, 2017 | Mar 02, 2019 | Results |
| Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | mg/L | 5 | 1 | Jan 09, 2017 | Mar 02, 2019 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 4 | 0 | Jan 09, 2017 | Jan 31, 2019 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 1 | 0 | Mar 11, 2020 | Mar 11, 2020 | Results |
All results (54 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 16, 2026 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1368304 | |
| Feb 16, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1368304 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368304 | |
| Mar 05, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1328620 | |
| Mar 05, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1328620 | |
| Mar 05, 2025 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1328620 | |
| Dec 12, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1317886 | |
| Dec 12, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1317886 | |
| Dec 12, 2024 | Total Suspended Solids (TSS) | 7.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317886 | |
| Jan 24, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1277758 | |
| Jan 24, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277758 | |
| Jan 24, 2024 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277758 | |
| Jan 18, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1270745 | |
| Jan 18, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1270745 | |
| Jan 18, 2024 | Total Suspended Solids (TSS) | 48 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1270745 | |
| Mar 10, 2023 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1234732 | |
| Mar 10, 2023 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1234732 | |
| Mar 10, 2023 | Total Suspended Solids (TSS) | ND | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1234732 | |
| Jan 29, 2021 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1143089 | |
| Jan 29, 2021 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1143089 | |
| Jan 29, 2021 | Total Suspended Solids (TSS) | 6 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1143089 | |
| Mar 11, 2020 | Electrical Conductivity @ 25 Deg. C | 356 | umhos/cm | Receiving Water | Qualifying Storm Event | A2510B | 1103179 | |
| Mar 11, 2020 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1103179 | |
| Mar 11, 2020 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1103179 | |
| Mar 11, 2020 | Total Suspended Solids (TSS) | 11 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1103179 | |
| Mar 02, 2019 | Ammonia, Total (as N) | ND | mg/L | Receiving Water | Qualifying Storm Event | E350.1 | 1039467 | |
| Mar 02, 2019 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | ND | mg/L | Receiving Water | Qualifying Storm Event | A5210B | 1039467 | |
| Mar 02, 2019 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1039467 | |
| Mar 02, 2019 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1039467 | |
| Mar 02, 2019 | Total Suspended Solids (TSS) | 7 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1039467 | |
| Jan 31, 2019 | Ammonia, Total (as N) | .59 | mg/L | Receiving Water | Qualifying Storm Event | E350.1 | 1039488 | |
| Jan 31, 2019 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 6 | mg/L | Receiving Water | Qualifying Storm Event | A5210B | 1039488 | |
| Jan 31, 2019 | Chemical Oxygen Demand (COD) | 61 | mg/L | Receiving Water | Qualifying Storm Event | A5220D | 1039488 | |
| Jan 31, 2019 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1039488 | |
| Jan 31, 2019 | pH | 6 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1039488 | |
| Jan 31, 2019 | Total Suspended Solids (TSS) | 7 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1039488 | |
| Mar 21, 2018 | Ammonia, Total (as N) | ND | mg/L | Receiving Water | Qualifying Storm Event | E350.1 | 1001885 | |
| Mar 21, 2018 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 4 | mg/L | Receiving Water | Qualifying Storm Event | A5210B | 1001885 | |
| Mar 21, 2018 | Chemical Oxygen Demand (COD) | 61 | mg/L | Receiving Water | Qualifying Storm Event | A5220D | 1001885 | |
| Mar 21, 2018 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1001885 | |
| Mar 21, 2018 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 1001885 | |
| Mar 21, 2018 | Total Suspended Solids (TSS) | 4 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1001885 | |
| Jan 22, 2017 | Ammonia, Total (as N) | ND | mg/L | Receiving Water | Qualifying Storm Event | E350.1 | 920413 | |
| Jan 22, 2017 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 9 | mg/L | Receiving Water | Qualifying Storm Event | A5210B | 920413 | |
| Jan 22, 2017 | Chemical Oxygen Demand (COD) | 63 | mg/L | Receiving Water | Qualifying Storm Event | A5220D | 920413 | |
| Jan 22, 2017 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 920413 | |
| Jan 22, 2017 | pH | 7 | SU | Receiving Water | Qualifying Storm Event | pH_Paper | 920413 | |
| Jan 22, 2017 | Total Suspended Solids (TSS) | DNQ 2.58 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 920413 | |
| Jan 09, 2017 | Ammonia, Total (as N) | .088 | mg/L | Receiving Water | Qualifying Storm Event | E350.1 | 919871 | |
| Jan 09, 2017 | Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | 3 | mg/L | Receiving Water | Qualifying Storm Event | A5210B | 919871 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| 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 (11 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 25, 2026 | Annual reports | 1335909 | Annual report 2025 | — | |
| Jun 17, 2025 | Annual reports | 1294746 | Annual report 2024 | — | |
| Jun 19, 2024 | Annual reports | 1243857 | Annual report 2023 | — | |
| Jun 22, 2023 | Annual reports | 1189887 | Annual report 2022 | — | |
| Jun 22, 2022 | Annual reports | 1113308 | Annual report 2021 | — | |
| Jun 15, 2021 | Annual reports | 1069347 | Annual report 2020 | — | |
| Jul 10, 2020 | Annual reports | 986658 | Annual report 2019 | — | |
| Jul 15, 2019 | Annual reports | 954239 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 939656 | Annual report 2017 | — | |
| Jul 14, 2017 | Annual reports | 878938 | Annual report 2016 | — | |
| Jun 23, 2016 | Annual reports | 843402 | Annual report 2015 | — |
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.