Rock Solid Stone
Active WDID 9 37I020489 Fallbrook, 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
- Fallbrook, San Diego County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Santa Margarita (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
- 57 distinct results, 8 reporting years (2015 to 2025)
- Most recent sample Jan 02, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 3 violation records · 4 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
- 33.38394, -117.24328
- 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
- 308 Industrial Wy, Fallbrook 92028
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Lake O'Neill-Santa Margarita River HUC12 180703020504
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
- Rock Solid Stone
- Primary industry (SIC)
- 3281-Cut Stone and Stone Products
- Application ID
- 309120
- NOI processed
- Oct 06, 2006
- Last certified
- Jun 26, 2024
- Facility size
- 0.5 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 309120 | Industrial | Active | Oct 06, 2006 | — | Jun 26, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Santa Margarita
- 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
5 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.
57 distinct measurements across 6 parameters, most recent sample Jan 02, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 3 | 3 | 0 | Jan 02, 2026 | Jan 02, 2026 |
| 2024 | 3 | 3 | 0 | Mar 31, 2025 | Mar 31, 2025 |
| 2023 | 6 | 3 | 0 | Jan 22, 2024 | Feb 01, 2024 |
| 2019 | 9 | 3 | 0 | Dec 04, 2019 | Apr 17, 2020 |
| 2018 | 12 | 3 | 0 | Nov 29, 2018 | Feb 04, 2019 |
| 2017 | 6 | 3 | 0 | Jan 09, 2018 | Mar 22, 2018 |
| 2016 | 10 | 5 | 0 | Nov 21, 2016 | Jan 12, 2017 |
| 2015 | 8 | 4 | 0 | Jan 05, 2016 | Mar 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| pH | SU | 17 | 2 | Jan 05, 2016 | Jan 02, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 17 | 3 | Jan 05, 2016 | Jan 02, 2026 | Results |
| Oil and Grease | mg/L | 13 | 9 | Jan 09, 2018 | Jan 02, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 4 | 0 | Jan 05, 2016 | Jan 12, 2017 | Results |
| Total Organic Carbon (TOC) | mg/L | 4 | 0 | Jan 05, 2016 | Jan 12, 2017 | Results |
| Total Dissolved Solids (TDS) | mg/L | 2 | 1 | Nov 21, 2016 | Jan 12, 2017 | Results |
All results (57 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 02, 2026 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363965 | |
| Jan 02, 2026 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1363965 | |
| Jan 02, 2026 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363965 | |
| Mar 31, 2025 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1330670 | |
| Mar 31, 2025 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1330670 | |
| Mar 31, 2025 | Total Suspended Solids (TSS) | 3.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1330670 | |
| Feb 01, 2024 | Oil and Grease | < 5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1288504 | |
| Feb 01, 2024 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1288504 | |
| Feb 01, 2024 | Total Suspended Solids (TSS) | 14.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1288504 | |
| Jan 22, 2024 | Oil and Grease | .1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1288696 | |
| Jan 22, 2024 | pH | 6.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1288696 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 93.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1288696 | |
| Apr 17, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1123296 | |
| Apr 17, 2020 | pH | > 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1123296 | |
| Apr 17, 2020 | Total Suspended Solids (TSS) | > 186 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1123296 | |
| Mar 10, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1123296 | |
| Mar 10, 2020 | pH | > 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1123296 | |
| Mar 10, 2020 | Total Suspended Solids (TSS) | > 139 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1123296 | |
| Dec 04, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1096683 | |
| Dec 04, 2019 | pH | 4 | SU | Effluent | Qualifying Storm Event | A4500HB | 1096683 | |
| Dec 04, 2019 | Total Suspended Solids (TSS) | > 204 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1096683 | |
| Feb 04, 2019 | Oil and Grease | 3.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1044885 | |
| Feb 04, 2019 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1044885 | |
| Feb 04, 2019 | Total Suspended Solids (TSS) | 50 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1044885 | |
| Jan 17, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1044253 | |
| Jan 17, 2019 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1044253 | |
| Jan 17, 2019 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1044253 | |
| Dec 05, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1033757 | |
| Dec 05, 2018 | pH | < 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1033757 | |
| Dec 05, 2018 | Total Suspended Solids (TSS) | > 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1033757 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1028393 | |
| Nov 29, 2018 | pH | < 5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1028393 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | < 11 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1028393 | |
| Mar 22, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 993165 | |
| Mar 22, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 993165 | |
| Mar 22, 2018 | Total Suspended Solids (TSS) | 83 | mg/L | Effluent | Qualifying Storm Event | A2540D | 993165 | |
| Jan 09, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 991798 | |
| Jan 09, 2018 | pH | 5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 991798 | |
| Jan 09, 2018 | Total Suspended Solids (TSS) | 9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 991798 | |
| Jan 12, 2017 | Electrical Conductivity @ 25 Deg. C | 12.6 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 919485 | |
| Jan 12, 2017 | pH | 7.54 | SU | Effluent | Qualifying Storm Event | A4500HB | 919485 | |
| Jan 12, 2017 | Total Dissolved Solids (TDS) | DNQ 7 | mg/L | Effluent | Qualifying Storm Event | A2540C | 919485 | |
| Jan 12, 2017 | Total Organic Carbon (TOC) | 2.6 | mg/L | Effluent | Qualifying Storm Event | A5310B | 919485 | |
| Jan 12, 2017 | Total Suspended Solids (TSS) | DNQ 11 | mg/L | Effluent | Qualifying Storm Event | A2540D | 919485 | |
| Nov 21, 2016 | Electrical Conductivity @ 25 Deg. C | 79.4 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 919471 | |
| Nov 21, 2016 | pH | 6.85 | SU | Effluent | Qualifying Storm Event | A4500HB | 919471 | |
| Nov 21, 2016 | Total Dissolved Solids (TDS) | 58 | mg/L | Effluent | Qualifying Storm Event | A2540C | 919471 | |
| Nov 21, 2016 | Total Organic Carbon (TOC) | 26 | mg/L | Effluent | Qualifying Storm Event | A5310B | 919471 | |
| Nov 21, 2016 | Total Suspended Solids (TSS) | 73 | mg/L | Effluent | Qualifying Storm Event | A2540D | 919471 | |
| Mar 07, 2016 | Electrical Conductivity @ 25 Deg. C | 35.5 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 919448 |
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 | 3 | 3 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 2010 – Jul 02, 2013 | Oct 21, 2026 | All violations |
| Enforcement actions | 4 | 4 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jul 01, 2007 – Aug 21, 2013 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Sep 20, 2012 – Sep 20, 2012 | 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 (19 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 15, 2026 | Annual reports | 1334986 | Annual report 2025 | — | |
| Jun 17, 2025 | Annual reports | 1293783 | Annual report 2024 | — | |
| Aug 02, 2024 | Annual reports | 1068152 | Annual report 2020 | — | |
| Aug 02, 2024 | Annual reports | 1112161 | Annual report 2021 | — | |
| Aug 02, 2024 | Annual reports | 1188826 | Annual report 2022 | — | |
| Aug 02, 2024 | Annual reports | 985375 | Annual report 2019 | — | |
| Jul 24, 2024 | Annual reports | 1242841 | Annual report 2023 | — | |
| Dec 16, 2019 | Annual reports | 952906 | Annual report 2018 | — | |
| Jul 05, 2018 | Annual reports | 938320 | Annual report 2017 | — | |
| Jul 11, 2017 | Annual reports | 848030 | Annual report 2015 | — | |
| Jul 11, 2017 | Annual reports | 877534 | Annual report 2016 | — | |
| Aug 21, 2013 | Enforcement actions | 412873 | SEL (Staff Enforcement Letter) | Active | |
| Jul 02, 2013 | Violations | 851553 | Late Report | Violation | Report |
| Sep 20, 2012 | Inspections | 2016637 | Non-compliance Follow-up | — | No Further Action |
| Aug 07, 2012 | Enforcement actions | 410867 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 02, 2012 | Violations | 848251 | Late Report | Violation | Report |
| Aug 20, 2010 | Enforcement actions | 402366 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2010 | Violations | 842235 | Late Report | Violation | Report |
| Jul 01, 2007 | Enforcement actions | 330719 | NOV (Notice of Violation) | Historical | 97-03-DWQ |
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.