Carroll Canyon Aggregates
Active WDID 9 37I005218 San Diego, San Diego County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- San Diego, San Diego County
- Region 9 · San Diego · Location · Statewide map
- 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 71 distinct results, 7 reporting years (2015 to 2024)
- Most recent sample Feb 27, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 1 violation record · 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
- 32.90149, -117.12378
- 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
- 10051 Black Mountain Rd, San Diego 92126
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Carroll Canyon HUC12 180703040401
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
- CalMat Co dba Vulcan Materials Co
- Primary industry (SIC)
- 1442-Construction Sand and Gravel
- Secondary SIC
- 2951-Asphalt Paving Mixtures and Blocks
- Application ID
- 218330
- NOI processed
- Apr 09, 1992
- Last certified
- Dec 17, 2025
- Facility size
- 198 Acres
- Impervious area
- 95 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 218330 | Industrial | Active | Apr 09, 1992 | — | Dec 17, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Carroll Canyon Creek
- Discharges directly / indirectly
- Y / N (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
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 |
|---|---|---|---|
| Carroll Canyon CAR9061000020090127004841 | 149 m | listed | 4 |
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.
71 distinct measurements across 6 parameters, most recent sample Feb 27, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 18 | 6 | 0 | Jan 27, 2025 | Feb 27, 2025 |
| 2023 | 11 | 6 | 0 | Jan 22, 2024 | Feb 01, 2024 |
| 2022 | 10 | 5 | 0 | Feb 13, 2023 | Mar 01, 2023 |
| 2021 | 8 | 4 | 0 | Dec 09, 2021 | Dec 14, 2021 |
| 2020 | 8 | 4 | 0 | Jan 25, 2021 | Jan 29, 2021 |
| 2019 | 4 | 4 | 0 | Dec 23, 2019 | Dec 23, 2019 |
| 2015 | 12 | 4 | 0 | Sep 15, 2015 | Sep 15, 2015 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 15 | 4 | Sep 15, 2015 | Feb 27, 2025 | Results |
| pH | SU | 15 | 0 | Sep 15, 2015 | Feb 27, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 15 | 0 | Sep 15, 2015 | Feb 27, 2025 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 12 | 0 | Sep 15, 2015 | Feb 27, 2025 | Results |
| Nitrate, Total (as N) | mg/L | 7 | 0 | Feb 13, 2023 | Feb 27, 2025 | Results |
| Nitrite, Total (as N) | mg/L | 7 | 6 | Feb 13, 2023 | Feb 27, 2025 | Results |
All results (71 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 27, 2025 | Nitrate, Total (as N) | 2.6 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Feb 27, 2025 | Nitrite Plus Nitrate (as N) | 2.6 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Feb 27, 2025 | Nitrite, Total (as N) | < .45 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Feb 27, 2025 | Oil and Grease | 6.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322449 | |
| Feb 27, 2025 | pH | 5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1322449 | |
| Feb 27, 2025 | Total Suspended Solids (TSS) | 220 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322449 | |
| Feb 13, 2025 | Nitrate, Total (as N) | .33 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322463 | |
| Feb 13, 2025 | Nitrite Plus Nitrate (as N) | .33 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322463 | |
| Feb 13, 2025 | Nitrite, Total (as N) | < .18 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322463 | |
| Feb 13, 2025 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322463 | |
| Feb 13, 2025 | pH | 8.9 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322463 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322463 | |
| Jan 27, 2025 | Nitrate, Total (as N) | 1.7 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Jan 27, 2025 | Nitrite Plus Nitrate (as N) | 1.7 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Jan 27, 2025 | Nitrite, Total (as N) | < .18 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1322449 | |
| Jan 27, 2025 | Oil and Grease | 3.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322449 | |
| Jan 27, 2025 | pH | 5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1322449 | |
| Jan 27, 2025 | Total Suspended Solids (TSS) | 150 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322449 | |
| Feb 01, 2024 | Nitrate, Total (as N) | .42 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1278942 | |
| Feb 01, 2024 | Nitrite Plus Nitrate (as N) | .42 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1278942 | |
| Feb 01, 2024 | Nitrite, Total (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1278942 | |
| Feb 01, 2024 | Oil and Grease | .86 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1278942 | |
| Feb 01, 2024 | pH | 8.7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1278942 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 140 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1278942 | |
| Jan 22, 2024 | Nitrate, Total (as N) | .65 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1273639 | |
| Jan 22, 2024 | Nitrite, Total (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1273639 | |
| Jan 22, 2024 | Oil and Grease | .86 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1273639 | |
| Jan 22, 2024 | pH | 8.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1273639 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 50 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1273639 | |
| Mar 01, 2023 | Nitrate, Total (as N) | .4 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1228809 | |
| Mar 01, 2023 | Nitrite, Total (as N) | ND | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1228809 | |
| Mar 01, 2023 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1228809 | |
| Mar 01, 2023 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1228809 | |
| Mar 01, 2023 | Total Suspended Solids (TSS) | 110 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1228809 | |
| Feb 13, 2023 | Nitrate, Total (as N) | 1.1 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1228809 | |
| Feb 13, 2023 | Nitrite, Total (as N) | 2.7 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1228809 | |
| Feb 13, 2023 | Oil and Grease | 1.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1228809 | |
| Feb 13, 2023 | pH | 9.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1228809 | |
| Feb 13, 2023 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1228809 | |
| Dec 14, 2021 | Nitrite Plus Nitrate (as N) | .82 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1173682 | |
| Dec 14, 2021 | Oil and Grease | 1.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1173682 | |
| Dec 14, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1173682 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 120 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1173682 | |
| Dec 09, 2021 | Nitrite Plus Nitrate (as N) | .32 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1172997 | |
| Dec 09, 2021 | Oil and Grease | .63 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1172997 | |
| Dec 09, 2021 | pH | 7.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1172997 | |
| Dec 09, 2021 | Total Suspended Solids (TSS) | 3.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1172997 | |
| Jan 29, 2021 | Nitrite Plus Nitrate (as N) | 1.1 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1145246 | |
| Jan 29, 2021 | Oil and Grease | .95 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1145246 | |
| Jan 29, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1145246 |
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 | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Feb 07, 2011 – Feb 07, 2011 | Oct 21, 2026 | All violations |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 3 | inspections, not findings | Jul 06, 2001 – Mar 02, 2017 | 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 (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 07, 2026 | Annual reports | 1334169 | Annual report 2025 | — | |
| Jul 14, 2025 | Annual reports | 1292939 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1241941 | Annual report 2023 | — | |
| Jul 10, 2023 | Annual reports | 1187870 | Annual report 2022 | — | |
| Jul 05, 2022 | Annual reports | 1111133 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1067068 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 984221 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 951723 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 937133 | Annual report 2017 | — | |
| Jul 11, 2017 | Annual reports | 876282 | Annual report 2016 | — | |
| Mar 02, 2017 | Inspections | 2033631 | B Type compliance | — | No Further Action |
| Jul 12, 2016 | Annual reports | 846083 | Annual report 2015 | — | |
| Feb 07, 2011 | Inspections | 2010575 | B Type compliance | — | Additional Info Required |
| Feb 07, 2011 | Violations | 843554 | Deficient BMP Implementation | Violation | Inspection |
| Jul 06, 2001 | Inspections | 313760 | B Type compliance | — |
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.