Dalou Corporation dba Tomco Product
Terminated WDID 4 19NEC005047 Azusa, Los Angeles County Region 4 · Los Angeles
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- No Exposure Certification (NEC) · Permits and applications
- Location Evidence: facility-reported
- Azusa, Los Angeles County
- Region 4 · Los Angeles · Location · Statewide map
- Receiving water
- Little Dalton Wash (as reported by the facility)
- Evidence: identification corroborated Little Dalton Wash Details
- Identified receiving water on the 2026 303(d) list
- Yes · 5 Appendix A decisions, category 5 Evidence: State-published
- Describes the waterbody, not this facility · Waterbody profile
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- None
- Monitoring results Evidence: facility-reported
- 28 distinct results, 1 reporting year (2021 to 2021)
- Most recent sample Mar 28, 2022 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 2 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
- 34.13508, -117.92227
- Precision
- 5 decimal places
- Shared point
- 4 permits report this exact point
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 741 N Coney Ave 741 N Coney Ave, Azusa 91702
- Regional Water Board
- 4 — Los Angeles
HUC12 watershed Evidence: spatial
- Big Dalton Wash HUC12 180701060402
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
- No Exposure Certification (NEC)
- Status
- Terminated
- Operator
- Dalou Corp dba Tomco Products
- Primary industry (SIC)
- 3499-Fabricated Metal Products, NEC
- Application ID
- 507444
- NOI processed
- Mar 29, 2019
- Last certified
- Jun 08, 2021
- Facility size
- 22000 SqFt
- Impervious area
- 0 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 507444 | Industrial | Terminated | Mar 29, 2019 | — | Jun 08, 2021 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Little Dalton Wash
- Discharges directly / indirectly
- Y / N (as answered in the permit application)
Evidence: identification corroborated Little Dalton Wash CAR4052000020210323060989
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 2.2 km. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Little Dalton Wash is on the 2026 Clean Water Act section 303(d) list (5 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| alpha-Endosulfan (Endosulfan 1) | 5 | List on 303(d) list (TMDL required list) | 5A | 140194 |
| Copper | 5 | List on 303(d) list (TMDL required list) | 5A | 140193 |
| Indicator Bacteria | 5 | List on 303(d) list (TMDL required list) | 5A | 150296 |
| Lead | 5 | List on 303(d) list (TMDL required list) | 5A | 140198 |
| Zinc | 5 | List on 303(d) list (TMDL required list) | 5A | 140206 |
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. State Board adoption 2026-02-03; USEPA approval not confirmed. A listing describes the waterbody, not this facility. Waterbody profile.
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.
28 distinct measurements across 7 parameters, most recent sample Mar 28, 2022.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2021 | 28 | 7 | 0 | Dec 14, 2021 | Mar 28, 2022 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total Recoverable | mg/L | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
| Iron, Total Recoverable | mg/L | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
| Oil and Grease | mg/L | 4 | 4 | Dec 14, 2021 | Mar 28, 2022 | Results |
| pH | SU | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
| Total Suspended Solids (TSS) | mg/L | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
| Zinc, Total Recoverable | mg/L | 4 | 0 | Dec 14, 2021 | Mar 28, 2022 | Results |
All results (28 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 28, 2022 | Aluminum, Total Recoverable | .17 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1182248 | |
| Mar 28, 2022 | Aluminum, Total Recoverable | .17 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1182248 | |
| Mar 28, 2022 | Iron, Total Recoverable | .4 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1182248 | |
| Mar 28, 2022 | Iron, Total Recoverable | .24 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1182248 | |
| Mar 28, 2022 | Nitrite Plus Nitrate (as N) | .054 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1182248 | |
| Mar 28, 2022 | Nitrite Plus Nitrate (as N) | .047 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1182248 | |
| Mar 28, 2022 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1182248 | |
| Mar 28, 2022 | Oil and Grease | ND 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1182248 | |
| Mar 28, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1182248 | |
| Mar 28, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1182248 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 7.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1182248 | |
| Mar 28, 2022 | Total Suspended Solids (TSS) | 7.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1182248 | |
| Mar 28, 2022 | Zinc, Total Recoverable | .16 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1182248 | |
| Mar 28, 2022 | Zinc, Total Recoverable | .091 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1182248 | |
| Dec 14, 2021 | Aluminum, Total Recoverable | .05 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1175824 | |
| Dec 14, 2021 | Aluminum, Total Recoverable | .048 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1175824 | |
| Dec 14, 2021 | Iron, Total Recoverable | .094 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1175824 | |
| Dec 14, 2021 | Iron, Total Recoverable | .12 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1175824 | |
| Dec 14, 2021 | Nitrite Plus Nitrate (as N) | .23 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1175824 | |
| Dec 14, 2021 | Nitrite Plus Nitrate (as N) | .25 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1175824 | |
| Dec 14, 2021 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1175824 | |
| Dec 14, 2021 | Oil and Grease | ND 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1175824 | |
| Dec 14, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1175824 | |
| Dec 14, 2021 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1175824 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 2.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1175824 | |
| Dec 14, 2021 | Total Suspended Solids (TSS) | 5.7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1175824 | |
| Dec 14, 2021 | Zinc, Total Recoverable | .097 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1175824 | |
| Dec 14, 2021 | Zinc, Total Recoverable | .097 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1175824 |
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 | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Oct 02, 2020 – Apr 09, 2021 | Oct 21, 2026 | All violations |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 1 | inspections, not findings | Mar 09, 2020 – Mar 09, 2020 | Oct 21, 2026 | All inspections |
| Annual reports | 2 | certified reports (contents not shown) | 2021 – 2022 | 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 (5 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 21, 2023 | Annual reports | 1195667 | Annual report 2022 | — | |
| Jul 11, 2022 | Annual reports | 1150951 | Annual report 2021 | — | |
| Apr 09, 2021 | Violations | 876708 | Failure to meet NEC criteria | Violation | Inspection |
| Oct 02, 2020 | Violations | 876353 | Failure to meet NEC criteria | Violation | Report |
| Mar 09, 2020 | Inspections | 2050510 | NEC | Finalized | Additional Info Required |
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.