GKN Aerospace Chemtronics Inc
Active WDID 9 37I000277 El Cajon, San Diego County Region 9 · San Diego
Watershed, receiving-water, nearby-water and TMDL information is temporarily unavailable. Permit and monitoring records below are complete.
At a glance
- Permit Evidence: SMARTS record
- Active 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
- Forester Creek (as reported by the facility)
- Evidence: identification unavailable 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
- Evidence: unavailable
- Monitoring results Evidence: facility-reported
- 2,244 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 16, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 8 violation records · 3 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
32.81684, -116.97801
Coordinates as reported in the permit application; not a discharge point.
- Facility address
- 1150 W Bradley Ave, El Cajon 92020
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
Unavailable.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- GKN Aerospace Chemtronics Inc
- Primary industry (SIC)
- 3724-Aircraft Engines and Engine Parts
- Application ID
- 218151
- NOI processed
- Mar 06, 1992
- Last certified
- Feb 14, 2025
- Facility size
- 25.4 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 218151 | Industrial | Active | Mar 06, 1992 | — | Feb 14, 2025 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Forester Creek
Evidence: unavailable Match status unavailable.
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.
Evidence: unavailable Unavailable.
SMARTS TMDL records Evidence: SMARTS-reported
Evidence: unavailable Unavailable.
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.
2,244 distinct measurements across 15 parameters, most recent sample Feb 16, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 80 | 14 | 0 | Oct 14, 2025 | Feb 16, 2026 |
| 2024 | 52 | 13 | 0 | Jan 26, 2025 | Feb 12, 2025 |
| 2023 | 78 | 13 | 0 | Dec 22, 2023 | Jan 20, 2024 |
| 2022 | 104 | 13 | 0 | Nov 09, 2022 | Jan 30, 2023 |
| 2021 | 104 | 13 | 0 | Dec 09, 2021 | Mar 04, 2022 |
| 2020 | 104 | 13 | 0 | Nov 07, 2020 | Jan 29, 2021 |
| 2019 | 364 | 13 | 0 | Nov 27, 2019 | Mar 18, 2020 |
| 2018 | 455 | 13 | 0 | Nov 29, 2018 | Feb 13, 2019 |
| 2017 | 182 | 13 | 0 | Jan 08, 2018 | Mar 10, 2018 |
| 2016 | 378 | 14 | 0 | Nov 20, 2016 | Feb 17, 2017 |
| 2015 | 343 | 13 | 0 | Sep 15, 2015 | Mar 11, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Chemical Oxygen Demand (COD) | mg/L | 173 | 35 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Chromium (Total) | mg/L | 173 | 30 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Copper, Total | mg/L | 173 | 1 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Fluoride, Total | mg/L | 173 | 24 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Lead, Total | mg/L | 173 | 42 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Nickel, Total | mg/L | 173 | 12 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Oil and Grease | mg/L | 173 | 85 | Sep 16, 2015 | Feb 16, 2026 | Results |
| pH | SU | 173 | 0 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Total Dissolved Solids (TDS) | mg/L | 173 | 1 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 173 | 16 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Zinc, Total | mg/L | 173 | 5 | Sep 15, 2015 | Feb 16, 2026 | Results |
| Aluminum, Total | mg/L | 138 | 3 | Nov 26, 2016 | Feb 16, 2026 | Results |
Show 3 more parameters
Aluminum, Total results (138 distinct rows, show all)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 22, 2020 | Aluminum, Total | .28 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1105171 | |
| Feb 22, 2020 | Aluminum, Total | .572 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1105171 | |
| Feb 22, 2020 | Aluminum, Total | .412 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1105171 | |
| Feb 22, 2020 | Aluminum, Total | .858 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1105171 | |
| Dec 23, 2019 | Aluminum, Total | .0648 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .157 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .239 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .379 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .263 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .504 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Dec 23, 2019 | Aluminum, Total | .888 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1108142 | |
| Nov 27, 2019 | Aluminum, Total | .255 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | .668 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | .501 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | .214 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | .276 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | 1.32 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Nov 27, 2019 | Aluminum, Total | .0937 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1104251 | |
| Feb 13, 2019 | Aluminum, Total | .225 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | .226 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | .378 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | .0864 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | 1.79 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | .393 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Feb 13, 2019 | Aluminum, Total | .215 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054237 | |
| Jan 14, 2019 | Aluminum, Total | .311 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .0546 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .111 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .469 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .327 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .248 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 14, 2019 | Aluminum, Total | .179 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054234 | |
| Jan 12, 2019 | Aluminum, Total | 0 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .0926 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .0298 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .31 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .788 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .312 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Jan 12, 2019 | Aluminum, Total | .0656 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1054233 | |
| Dec 05, 2018 | Aluminum, Total | .139 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | 1.01 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | .472 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | 1.06 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | .432 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | .468 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Dec 05, 2018 | Aluminum, Total | .341 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1034438 | |
| Nov 29, 2018 | Aluminum, Total | .952 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1033665 | |
| Nov 29, 2018 | Aluminum, Total | .815 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1033665 | |
| Nov 29, 2018 | Aluminum, Total | .34 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1033665 | |
| Nov 29, 2018 | Aluminum, Total | 1.27 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1033665 |
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 | 8 | 8 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 1999 – Dec 11, 2004 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 11, 2000 – Mar 03, 2004 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | Feb 26, 2002 – Jun 04, 2026 | 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 (26 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1335733 | Annual report 2025 | — | |
| Jun 04, 2026 | Inspections | 2071156 | B Type compliance | Finalized | Additional Info Required |
| Jun 27, 2025 | Annual reports | 1294568 | Annual report 2024 | — | |
| Jul 16, 2024 | Annual reports | 1243673 | Annual report 2023 | — | |
| Jul 19, 2023 | Annual reports | 1189698 | Annual report 2022 | — | |
| Jul 14, 2022 | Annual reports | 1113104 | Annual report 2021 | — | |
| Jul 15, 2021 | Annual reports | 1069132 | Annual report 2020 | — | |
| Jul 01, 2020 | Annual reports | 986428 | Annual report 2019 | — | |
| Jul 15, 2019 | Annual reports | 954002 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 939421 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 878687 | Annual report 2016 | — | |
| Sep 01, 2016 | Annual reports | 840652 | Annual report 2015 | — | |
| Dec 11, 2004 | Violations | 259703 | Unauthorized NSWD | Violation | Report |
| Mar 03, 2004 | Enforcement actions | 251873 | NTC (Notice to Comply) | Historical | UNKNOWN |
| Mar 03, 2004 | Inspections | 333609 | B Type compliance | — | |
| Mar 03, 2004 | Violations | 248824 | Deficient BMP Implementation | Violation | Inspection |
| Jun 18, 2002 | Violations | 222458 | Unauthorized NSWD | Violation | Inspection |
| Jun 07, 2002 | Enforcement actions | 248154 | NTC (Notice to Comply) | Historical | UNKNOWN |
| Jun 07, 2002 | Inspections | 323996 | Non-compliance Follow-up | — | |
| Feb 26, 2002 | Inspections | 323997 | B Type compliance | — | |
| Feb 26, 2002 | Violations | 203757 | Deficient BMP Implementation | Violation | Inspection |
| Feb 26, 2002 | Violations | 204661 | Deficient BMP Implementation | Violation | Inspection |
| Feb 26, 2002 | Violations | 204717 | Deficient BMP Implementation | Violation | Inspection |
| Aug 11, 2000 | Enforcement actions | 235291 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Jul 03, 2000 | Violations | 180388 | Unauthorized NSWD | Violation | Referral |
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 |
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.