Weldmac MFG Co
Terminated WDID 9 37I023629 El Cajon, San Diego County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- El Cajon, San Diego County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Pacific Ocean (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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 65 distinct results, 7 reporting years (2015 to 2022)
- Most recent sample May 04, 2023 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 1 violation record · 1 enforcement action
- 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
- 32.81664, -116.96942
- Precision
- 5 decimal places
- Shared point
- 2 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
- 1533 N Johnson Ave, El Cajon 92020
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Forester Creek HUC12 180703040702
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
- Terminated
- Operator
- Weldmac MFG Co
- Primary industry (SIC)
- 3999-Manufacturing Industries, NEC
- Application ID
- 426635
- NOI processed
- May 08, 2012
- Termination effective
- Aug 10, 2023
- Last certified
- Aug 26, 2025
- Facility size
- 2
- Impervious area
- 95 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 426635 | Industrial | Terminated | May 08, 2012 | Aug 10, 2023 | Aug 26, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Pacific Ocean
- 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
290 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 |
|---|---|---|---|
| Forester Creek CAR9071300020010924120240 | 413 m | listed | 9 |
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.
65 distinct measurements across 4 parameters, most recent sample May 04, 2023.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2022 | 15 | 3 | 0 | Sep 09, 2022 | May 04, 2023 |
| 2021 | 12 | 3 | 0 | Oct 05, 2021 | Mar 04, 2022 |
| 2020 | 12 | 3 | 0 | Jan 25, 2021 | Mar 03, 2021 |
| 2019 | 6 | 3 | 0 | Feb 10, 2020 | Mar 10, 2020 |
| 2018 | 6 | 3 | 0 | Nov 29, 2018 | Jan 15, 2019 |
| 2016 | 4 | 2 | 0 | Jan 09, 2017 | Jan 19, 2017 |
| 2015 | 10 | 4 | 0 | Oct 05, 2015 | Apr 07, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 22 | 15 | Oct 05, 2015 | May 04, 2023 | Results |
| Total Suspended Solids (TSS) | mg/L | 22 | 9 | Oct 05, 2015 | May 04, 2023 | Results |
| pH | SU | 20 | 1 | Oct 05, 2015 | May 04, 2023 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 1 | 0 | Oct 05, 2015 | Oct 05, 2015 | Results |
All results (65 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| May 04, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1237468 | |
| May 04, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | A4500HB | 1237468 | |
| May 04, 2023 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1237468 | |
| Jan 26, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1237485 | |
| Jan 26, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | A4500HB | 1237485 | |
| Jan 26, 2023 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1237485 | |
| Jan 10, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1226911 | |
| Jan 10, 2023 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1226911 | |
| Jan 10, 2023 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1226911 | |
| Nov 08, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1218784 | |
| Nov 08, 2022 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1218784 | |
| Nov 08, 2022 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1218784 | |
| Sep 09, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1214947 | |
| Sep 09, 2022 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1214947 | |
| Sep 09, 2022 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1214947 | |
| Mar 04, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1179667 | |
| Mar 04, 2022 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1179667 | |
| Mar 04, 2022 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1179667 | |
| Feb 22, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1178658 | |
| Feb 22, 2022 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1178658 | |
| Feb 22, 2022 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1178658 | |
| Dec 09, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1174068 | |
| Dec 09, 2021 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1174068 | |
| Dec 09, 2021 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1174068 | |
| Oct 05, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1167685 | |
| Oct 05, 2021 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1167685 | |
| Oct 05, 2021 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1167685 | |
| Mar 03, 2021 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1146421 | |
| Mar 03, 2021 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1148952 | |
| Mar 03, 2021 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1146421 | |
| Mar 03, 2021 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1148952 | |
| Mar 03, 2021 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1146421 | |
| Mar 03, 2021 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1148952 | |
| Jan 25, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1141333 | |
| Jan 25, 2021 | Oil and Grease | 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1141305 | |
| Jan 25, 2021 | pH | ND 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1141333 | |
| Jan 25, 2021 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1141305 | |
| Jan 25, 2021 | Total Suspended Solids (TSS) | ND 46 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1141333 | |
| Jan 25, 2021 | Total Suspended Solids (TSS) | 46 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1141305 | |
| Mar 10, 2020 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1100961 | |
| Mar 10, 2020 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1100961 | |
| Mar 10, 2020 | Total Suspended Solids (TSS) | 42 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1100961 | |
| Feb 10, 2020 | Oil and Grease | 6.66 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1100973 | |
| Feb 10, 2020 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1100973 | |
| Feb 10, 2020 | Total Suspended Solids (TSS) | 91 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1100973 | |
| Jan 15, 2019 | Oil and Grease | 3.17 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1043404 | |
| Jan 15, 2019 | pH | 6.8 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1043404 | |
| Jan 15, 2019 | Total Suspended Solids (TSS) | 89 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1043404 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1043393 | |
| Nov 29, 2018 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1043393 |
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 | Jul 02, 2012 – Jul 02, 2012 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Jul 31, 2012 – Jul 31, 2012 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Aug 09, 2012 – Aug 09, 2012 | Oct 21, 2026 | All inspections |
| Annual reports | 9 | certified reports (contents not shown) | 2015 – 2023 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jun 18, 2026 | Annual reports | 1246111 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 957264 | Annual report 2018 | — | |
| Jul 13, 2023 | Annual reports | 1192248 | Annual report 2022 | — | |
| Jul 15, 2022 | Annual reports | 1115902 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1064029 | Annual report 2020 | — | |
| Jul 16, 2020 | Annual reports | 980979 | Annual report 2019 | — | |
| Oct 01, 2018 | Annual reports | 942699 | Annual report 2017 | — | |
| Jul 15, 2017 | Annual reports | 882183 | Annual report 2016 | — | |
| Jun 24, 2016 | Annual reports | 842029 | Annual report 2015 | — | |
| Aug 09, 2012 | Inspections | 2016144 | B Type compliance | — | Additional Info Required |
| Jul 31, 2012 | Enforcement actions | 409404 | SEL (Staff Enforcement Letter) | Active | |
| Jul 02, 2012 | Violations | 848565 | Late Report | Violation | Report |
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.