CM Topsoil Inc
Active WDID 4 19I025235 Sylmar, Los Angeles 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
- Sylmar, Los Angeles County
- Region 4 · Los Angeles · 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
- None
- Monitoring results Evidence: facility-reported
- 154 distinct results, 10 reporting years (2015 to 2025)
- Most recent sample Dec 24, 2025 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 12 violation records · 10 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
- 34.2927, -118.40475
- 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
- 12087 N Lopez Canyon Road, Sylmar 91342
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Tujunga Wash-Los Angeles River HUC12 180701050208
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
- CM Topsoil Inc
- Primary industry (SIC)
- 2875-Fertilizers, Mixing Only
- Application ID
- 451992
- NOI processed
- Jan 08, 2015
- Last certified
- Aug 11, 2015
- Facility size
- 7.1 Acres
- Impervious area
- 32 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 451992 | Industrial | Active | Jan 08, 2015 | — | Aug 11, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Storm Drain
- Discharges directly / indirectly
- N / Y (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.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
SMARTS TMDL records Evidence: SMARTS-reported
SMARTS TMDL record as reported for this facility; it is not a determination that the TMDL applies to the facility.
| TMDL | Waterbody (as reported) | Parameter | Limit | Type | Period | Due | Discharges to TMDL water |
|---|---|---|---|---|---|---|---|
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Lead, Total | .094 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Metals TMDL | Los Angeles River and Los Angeles River Tributaries | Zinc, Total | .159 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
| Los Angeles River Nitrogen TMDL | Los Angeles River Watershed | Nitrite Plus Nitrate (as N) | 8 mg/L | NEL instantaneous | FINAL | 2020-07-01 | Y |
3 records. Links between these records and specific TMDL projects or listed waterbodies have not been reviewed and are not shown.
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.
154 distinct measurements across 10 parameters, most recent sample Dec 24, 2025.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 8 | 0 | Nov 21, 2025 | Dec 24, 2025 |
| 2024 | 8 | 8 | 0 | Feb 13, 2025 | Feb 13, 2025 |
| 2023 | 16 | 8 | 0 | Jan 22, 2024 | Feb 06, 2024 |
| 2022 | 24 | 8 | 0 | Nov 08, 2022 | Jan 10, 2023 |
| 2021 | 18 | 9 | 0 | Oct 25, 2021 | Dec 14, 2021 |
| 2020 | 8 | 8 | 0 | Dec 28, 2020 | Dec 28, 2020 |
| 2019 | 24 | 8 | 0 | Dec 04, 2019 | Mar 17, 2020 |
| 2018 | 16 | 8 | 0 | Dec 06, 2018 | Jan 17, 2019 |
| 2016 | 16 | 8 | 0 | Dec 15, 2016 | Dec 30, 2016 |
| 2015 | 8 | 8 | 0 | Jan 05, 2016 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Iron, Total | mg/L | 19 | 4 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Lead, Total | mg/L | 19 | 6 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 19 | 7 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Oil and Grease | mg/L | 19 | 18 | Jan 05, 2016 | Dec 24, 2025 | Results |
| pH | SU | 19 | 0 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Total Suspended Solids (TSS) | mg/L | 19 | 4 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Zinc, Total | mg/L | 19 | 3 | Jan 05, 2016 | Dec 24, 2025 | Results |
| Phosphorus, Total (as P) | mg/L | 18 | 5 | Dec 15, 2016 | Dec 24, 2025 | Results |
| Nitrite, Total (as N) | mg/L | 2 | 0 | Oct 25, 2021 | Dec 14, 2021 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 1 | 0 | Jan 05, 2016 | Jan 05, 2016 | Results |
All results (154 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Dec 24, 2025 | Iron, Total | .36 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1363856 | |
| Dec 24, 2025 | Lead, Total | DNQ .00042 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1363856 | |
| Dec 24, 2025 | Nitrite Plus Nitrate (as N) | ND 0 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1363856 | |
| Dec 24, 2025 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1363856 | |
| Dec 24, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1363856 | |
| Dec 24, 2025 | Phosphorus, Total (as P) | ND 0 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1363856 | |
| Dec 24, 2025 | Total Suspended Solids (TSS) | 5.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1363856 | |
| Dec 24, 2025 | Zinc, Total | DNQ .013 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1363856 | |
| Nov 21, 2025 | Iron, Total | 3.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1360930 | |
| Nov 21, 2025 | Lead, Total | DNQ .00288 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360930 | |
| Nov 21, 2025 | Nitrite Plus Nitrate (as N) | .29 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1360930 | |
| Nov 21, 2025 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1360930 | |
| Nov 21, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1360930 | |
| Nov 21, 2025 | Phosphorus, Total (as P) | .92 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1360930 | |
| Nov 21, 2025 | Total Suspended Solids (TSS) | 54 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1360930 | |
| Nov 21, 2025 | Zinc, Total | .09 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1360930 | |
| Feb 13, 2025 | Iron, Total | .55 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1325105 | |
| Feb 13, 2025 | Lead, Total | DNQ .002 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1325105 | |
| Feb 13, 2025 | Nitrite Plus Nitrate (as N) | DNQ .16 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1325105 | |
| Feb 13, 2025 | Oil and Grease | DNQ 2.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1325105 | |
| Feb 13, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1325105 | |
| Feb 13, 2025 | Phosphorus, Total (as P) | .13 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1325105 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1325105 | |
| Feb 13, 2025 | Zinc, Total | DNQ .0416 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1325105 | |
| Feb 06, 2024 | Iron, Total | DNQ .09 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1280842 | |
| Feb 06, 2024 | Lead, Total | DNQ .0011 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280842 | |
| Feb 06, 2024 | Nitrite Plus Nitrate (as N) | DNQ .18 | mg/L | Effluent | Qualifying Storm Event | A4500HB | 1280842 | |
| Feb 06, 2024 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1280842 | |
| Feb 06, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1280842 | |
| Feb 06, 2024 | Phosphorus, Total (as P) | DNQ .024 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1280842 | |
| Feb 06, 2024 | Total Suspended Solids (TSS) | 2.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1280842 | |
| Feb 06, 2024 | Zinc, Total | 1.94 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1280842 | |
| Jan 22, 2024 | Iron, Total | DNQ .091 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1278114 | |
| Jan 22, 2024 | Lead, Total | DNQ .00077 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1278114 | |
| Jan 22, 2024 | Nitrite Plus Nitrate (as N) | DNQ .071 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1278114 | |
| Jan 22, 2024 | Oil and Grease | ND 0 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1278114 | |
| Jan 22, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1278114 | |
| Jan 22, 2024 | Phosphorus, Total (as P) | DNQ .026 | mg/L | Effluent | Qualifying Storm Event | A4500PFH | 1278114 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 4.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1278114 | |
| Jan 22, 2024 | Zinc, Total | 1.06 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1278114 | |
| Jan 10, 2023 | Iron, Total | .03 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1229087 | |
| Jan 10, 2023 | Lead, Total | .0004 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1229087 | |
| Jan 10, 2023 | Nitrite Plus Nitrate (as N) | DNQ .07 | mg/L | Effluent | Qualifying Storm Event | E353.2 | 1229087 | |
| Jan 10, 2023 | Oil and Grease | DNQ 3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1229087 | |
| Jan 10, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1229087 | |
| Jan 10, 2023 | Phosphorus, Total (as P) | DNQ .06 | mg/L | Effluent | Qualifying Storm Event | E365.3 | 1229087 | |
| Jan 10, 2023 | Total Suspended Solids (TSS) | DNQ .4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1229087 | |
| Jan 10, 2023 | Zinc, Total | .89 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1229087 | |
| Jan 05, 2023 | Iron, Total | .05 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1236522 | |
| Jan 05, 2023 | Lead, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1236522 |
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 | 12 | 12 Violation · 0 Potential (preliminary) · 0 Dismissed | Jan 08, 2018 – Nov 24, 2025 | Oct 21, 2026 | All violations |
| Enforcement actions | 10 | 10 issued · 0 draft · 0 withdrawn, rescinded or superseded | Apr 04, 2018 – Nov 24, 2025 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Dec 03, 2014 – Feb 20, 2019 | 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 | 1 | reports, by parameter | 2021-22 – 2021-22 | Oct 21, 2026 | All reports |
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 (37 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 06, 2026 | Annual reports | 1338962 | Annual report 2025 | — | |
| Nov 24, 2025 | Enforcement actions | 467724 | ACL (Administrative Civil Liability) | Active | R4-2025-0245 |
| Nov 24, 2025 | Violations | 902222 | Effluent | Violation | Report |
| Jul 08, 2025 | Annual reports | 1297990 | Annual report 2024 | — | |
| Sep 26, 2024 | Enforcement actions | 454908 | ACL (Administrative Civil Liability) | Active | R4-2024-0350 |
| Sep 26, 2024 | Violations | 890541 | Effluent | Violation | Report |
| Sep 26, 2024 | Violations | 890542 | Late Report | Violation | Report |
| Sep 13, 2024 | Water-quality-based corrective action reports | 1303013 | WQBCAR 2021-22 | — | Zinc, Total |
| Jul 01, 2024 | Annual reports | 1247254 | Annual report 2023 | — | |
| Dec 20, 2023 | Enforcement actions | 452523 | ACL (Administrative Civil Liability) | Historical | R4-2023-0399 |
| Dec 20, 2023 | Violations | 887682 | Effluent | Violation | Report |
| Dec 20, 2023 | Violations | 887683 | Late Report | Violation | Report |
| Sep 06, 2023 | Enforcement actions | 450831 | ACL (Administrative Civil Liability) | Historical | R4-2023-0094 |
| Jul 06, 2023 | Annual reports | 1193451 | Annual report 2022 | — | |
| Jul 12, 2022 | Annual reports | 1117277 | Annual report 2021 | — | |
| Jun 29, 2021 | Annual reports | 1065488 | Annual report 2020 | — | |
| Feb 18, 2021 | Violations | 886006 | Late Report | Violation | Report |
| Aug 14, 2020 | Enforcement actions | 437225 | NOV (Notice of Violation) | Historical | |
| Jul 13, 2020 | Annual reports | 982584 | Annual report 2019 | — | |
| Mar 06, 2020 | Violations | 873666 | Deficient Report | Violation | Report |
| Feb 21, 2020 | Enforcement actions | 436363 | NOV (Notice of Violation) | Historical | |
| Feb 18, 2020 | Enforcement actions | 436258 | NOV (Notice of Violation) | Historical | |
| Feb 18, 2020 | Violations | 872665 | Late Report | Violation | Report |
| Jan 01, 2020 | Violations | 872771 | Late Report | Violation | Report |
| Dec 05, 2019 | Enforcement actions | 435481 | NOV (Notice of Violation) | Historical |
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.