AIR VOL BLOCK LLC
Active WDID 3 40I009148 San Luis Obispo, 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
- San Luis Obispo, San Luis Obispo County
- Region 3 · Central Coast · Location · Statewide map
- Receiving water
- San Luis Obispo 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
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 160 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 17, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 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
- 35.24399, -120.6753
- Precision
- 4 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
- 1 Suburban Rd, San Luis Obispo 93401
- Regional Water Board
- 3 — Central Coast
HUC12 watershed Evidence: spatial
- Lower San Luis Obispo Creek HUC12 180600060702
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
- Air Vol Block LLC
- Primary industry (SIC)
- 3271-Concrete Block and Brick
- Application ID
- 185702
- NOI processed
- Nov 08, 1992
- Last certified
- Mar 13, 2015
- Facility size
- 11 Acres
- Impervious area
- 30 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 185702 | Industrial | Active | Nov 08, 1992 | — | Mar 13, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- San Luis Obispo Creek
- 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
3 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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| San Luis Obispo Creek (below Osos Street) CAR3102402119980828115513 | 333 m | listed | 7 |
| Prefumo Creek CAR3102401220020124125422 | 533 m | listed | 5 |
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.
160 distinct measurements across 4 parameters, most recent sample Feb 17, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 4 | 0 | Oct 14, 2025 | Feb 17, 2026 |
| 2024 | 16 | 4 | 0 | Nov 25, 2024 | Mar 31, 2025 |
| 2023 | 28 | 4 | 0 | Dec 19, 2023 | Apr 05, 2024 |
| 2022 | 16 | 4 | 0 | Nov 07, 2022 | Jan 09, 2023 |
| 2021 | 12 | 4 | 0 | Oct 25, 2021 | Apr 22, 2022 |
| 2020 | 12 | 4 | 0 | Dec 28, 2020 | Mar 10, 2021 |
| 2019 | 12 | 4 | 0 | Dec 04, 2019 | Apr 09, 2020 |
| 2018 | 16 | 4 | 0 | Oct 03, 2018 | Feb 27, 2019 |
| 2017 | 8 | 4 | 0 | Jan 09, 2018 | Mar 21, 2018 |
| 2016 | 16 | 4 | 0 | Oct 28, 2016 | Feb 20, 2017 |
| 2015 | 8 | 4 | 0 | Nov 02, 2015 | Dec 11, 2015 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 40 | 0 | Nov 02, 2015 | Feb 17, 2026 | Results |
| Oil and Grease | mg/L | 40 | 20 | Nov 02, 2015 | Feb 17, 2026 | Results |
| pH | SU | 40 | 1 | Nov 02, 2015 | Feb 17, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 40 | 0 | Nov 02, 2015 | Feb 17, 2026 | Results |
All results (160 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 17, 2026 | Iron, Total | 1200 | mg/L | Receiving Water | Qualifying Storm Event | E200.8 | 1371282 | |
| Feb 17, 2026 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1371282 | |
| Feb 17, 2026 | pH | 8.4 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1371282 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | 30 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1371282 | |
| Feb 11, 2026 | Iron, Total | 360 | mg/L | Receiving Water | Qualifying Storm Event | E200.8 | 1366902 | |
| Feb 11, 2026 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1366902 | |
| Feb 11, 2026 | pH | 8.8 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1366902 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 13 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1366902 | |
| Nov 14, 2025 | Iron, Total | 370 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1358980 | |
| Nov 14, 2025 | Oil and Grease | 1.8 | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1358980 | |
| Nov 14, 2025 | pH | 7.7 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1358980 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 20 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1358980 | |
| Oct 14, 2025 | Iron, Total | 1000 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1356021 | |
| Oct 14, 2025 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1356021 | |
| Oct 14, 2025 | pH | 8 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1356021 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 18 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1356021 | |
| Mar 31, 2025 | Iron, Total | 470 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1330085 | |
| Mar 31, 2025 | Oil and Grease | 1.7 | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1330085 | |
| Mar 31, 2025 | pH | 8.6 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1330085 | |
| Mar 31, 2025 | Total Suspended Solids (TSS) | 14 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1330085 | |
| Mar 17, 2025 | Iron, Total | 590 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1330084 | |
| Mar 17, 2025 | Oil and Grease | 40 | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1330084 | |
| Mar 17, 2025 | pH | 8.8 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1330084 | |
| Mar 17, 2025 | Total Suspended Solids (TSS) | 16 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1330084 | |
| Mar 13, 2025 | Iron, Total | 640 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1330082 | |
| Mar 13, 2025 | Oil and Grease | 0 | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1330082 | |
| Mar 13, 2025 | pH | 8.5 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1330082 | |
| Mar 13, 2025 | Total Suspended Solids (TSS) | 12 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1330082 | |
| Nov 25, 2024 | Iron, Total | 840 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1316775 | |
| Nov 25, 2024 | Oil and Grease | 2.1 | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1316775 | |
| Nov 25, 2024 | pH | 8.3 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1316775 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 23 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1316775 | |
| Apr 05, 2024 | Iron, Total | 1200 | mg/L | Receiving Water | Qualifying Storm Event | E200.8 | 1285270 | |
| Apr 05, 2024 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1285270 | |
| Apr 05, 2024 | pH | 8.2 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1285270 | |
| Apr 05, 2024 | Total Suspended Solids (TSS) | 17 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1285270 | |
| Mar 01, 2024 | Iron, Total | .39 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1282186 | |
| Mar 01, 2024 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1282186 | |
| Mar 01, 2024 | pH | 8.3 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1282186 | |
| Mar 01, 2024 | Total Suspended Solids (TSS) | 10 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1282186 | |
| Jan 22, 2024 | Iron, Total | 4.7 | mg/L | Receiving Water | Qualifying Storm Event | E200.8 | 1277252 | |
| Jan 22, 2024 | Iron, Total | .47 | mg/L | Receiving Water | Qualifying Storm Event | E200.7 | 1282119 | |
| Jan 22, 2024 | Iron, Total | .47 | mg/L | Receiving Water | Qualifying Storm Event | E200.8 | 1277145 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1277252 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1282119 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Receiving Water | Qualifying Storm Event | E1664B | 1277145 | |
| Jan 22, 2024 | pH | 7.9 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1277252 | |
| Jan 22, 2024 | pH | 7.9 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1282119 | |
| Jan 22, 2024 | pH | 7.9 | SU | Receiving Water | Qualifying Storm Event | pH_Field | 1277145 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 13 | mg/L | Receiving Water | Qualifying Storm Event | A2540D | 1277252 |
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 | 2 | inspections, not findings | Aug 18, 2014 – Apr 05, 2023 | 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 (13 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 24, 2026 | Annual reports | 1333957 | Annual report 2025 | — | |
| Jun 20, 2025 | Annual reports | 1292720 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1241710 | Annual report 2023 | — | |
| Jul 07, 2023 | Annual reports | 1187629 | Annual report 2022 | — | |
| Apr 05, 2023 | Inspections | 2059769 | B Type compliance | Finalized | No Further Action |
| Jul 05, 2022 | Annual reports | 1110871 | Annual report 2021 | — | |
| Jun 21, 2021 | Annual reports | 1066793 | Annual report 2020 | — | |
| Jun 12, 2020 | Annual reports | 983934 | Annual report 2019 | — | |
| Jul 08, 2019 | Annual reports | 951426 | Annual report 2018 | — | |
| Jun 22, 2018 | Annual reports | 936832 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 875964 | Annual report 2016 | — | |
| Jul 06, 2016 | Annual reports | 840851 | Annual report 2015 | — | |
| Aug 18, 2014 | Inspections | 2023253 | B Type compliance | — | Follow-up Inspection Needed |
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.