McMahon Steel Co Inc
Terminated WDID 9 37I023784 Chula Vista, 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
- Chula Vista, San Diego County
- Region 9 · San Diego · Location · Statewide map
- Receiving water
- Otay River (as reported by the facility)
- Evidence: identification corroborated Otay River Details
- Identified receiving water on the 2026 303(d) list
- Yes · 12 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 145 distinct results, 3 reporting years (2015 to 2017)
- Most recent sample Mar 15, 2018 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 0 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
- 32.59458, -117.0155
- 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
- 1880 Nirvana Ave, Chula Vista 91911
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Poggi Canyon-Otay River HUC12 180703041004
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
- McMahon Steel Co Inc
- Primary industry (SIC)
- 3441-Fabricated Structural Metal
- Application ID
- 430137
- NOI processed
- Aug 14, 2012
- Termination effective
- Jul 22, 2026
- Last certified
- May 01, 2015
- Facility size
- 1.5 Acres
- Impervious area
- 80 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 430137 | Industrial | Terminated | Aug 14, 2012 | Jul 22, 2026 | May 01, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Otay River
- Discharges directly / indirectly
- Y / N (as answered in the permit application)
Evidence: identification corroborated Otay River CAR9102000019991117160226
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 339 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Otay River is on the 2026 Clean Water Act section 303(d) list (12 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Benthic Community Effects | 5 | List on 303(d) list (TMDL required list) | 5A | 126452 |
| Bifenthrin | 5 | List on 303(d) list (TMDL required list) | 5A | 112135 |
| Copper | 5 | List on 303(d) list (TMDL required list) | 5A | 112121 |
| Cyfluthrin | 5 | List on 303(d) list (TMDL required list) | 5A | 112142 |
| Indicator Bacteria | 5 | List on 303(d) list (TMDL required list) | 5A | 127908 |
| Nitrogen | 5 | List on 303(d) list (TMDL required list) | 5A | 132051 |
| Oxygen, Dissolved | 5 | List on 303(d) list (TMDL required list) | 5A | 112126 |
| Phosphorus | 5 | List on 303(d) list (TMDL required list) | 5A | 112129 |
| Pyrethroids | 5 | List on 303(d) list (TMDL required list) | 5A | 112134 |
| Total Dissolved Solids | 5 | List on 303(d) list (TMDL required list) | 5A | 125509 |
| Toxicity | 5 | List on 303(d) list (TMDL required list) | 5A | 112131 |
| Zinc | 5 | List on 303(d) list (TMDL required list) | 5A | 112133 |
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.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Otay River CAR9102000019991117160226 | 339 m | listed | 12 |
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.
145 distinct measurements across 8 parameters, most recent sample Mar 15, 2018.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2017 | 16 | 8 | 0 | Feb 27, 2018 | Mar 15, 2018 |
| 2016 | 45 | 8 | 0 | Sep 20, 2016 | Jan 19, 2017 |
| 2015 | 84 | 7 | 0 | Oct 05, 2015 | Jan 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 20 | 5 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Iron, Total | mg/L | 20 | 0 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 20 | 1 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Oil and Grease | mg/L | 20 | 18 | Oct 05, 2015 | Mar 15, 2018 | Results |
| pH | SU | 20 | 0 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Total Suspended Solids (TSS) | mg/L | 20 | 7 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Zinc, Total | mg/L | 20 | 1 | Oct 05, 2015 | Mar 15, 2018 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 5 | 0 | Jan 05, 2017 | Mar 15, 2018 | Results |
All results (145 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Mar 15, 2018 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 998598 | |
| Mar 15, 2018 | Electrical Conductivity @ 25 Deg. C | 273 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 998598 | |
| Mar 15, 2018 | Iron, Total | 1.35 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 998598 | |
| Mar 15, 2018 | Nitrite Plus Nitrate (as N) | .55 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 998598 | |
| Mar 15, 2018 | Oil and Grease | DNQ 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 998598 | |
| Mar 15, 2018 | pH | 6.7 | SU | Effluent | Qualifying Storm Event | A4500HB | 998598 | |
| Mar 15, 2018 | Total Suspended Solids (TSS) | 76 | mg/L | Effluent | Qualifying Storm Event | A2540D | 998598 | |
| Mar 15, 2018 | Zinc, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 998598 | |
| Feb 27, 2018 | Aluminum, Total | DNQ .8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 997036 | |
| Feb 27, 2018 | Electrical Conductivity @ 25 Deg. C | 68.4 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 997036 | |
| Feb 27, 2018 | Iron, Total | .742 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 997036 | |
| Feb 27, 2018 | Nitrite Plus Nitrate (as N) | ND | mg/L | Effluent | Qualifying Storm Event | A4500NE | 997036 | |
| Feb 27, 2018 | Oil and Grease | DNQ 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 997036 | |
| Feb 27, 2018 | pH | 7.66 | SU | Effluent | Qualifying Storm Event | A4500HB | 997036 | |
| Feb 27, 2018 | Total Suspended Solids (TSS) | DNQ 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 997036 | |
| Feb 27, 2018 | Zinc, Total | .077 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 997036 | |
| Jan 19, 2017 | Aluminum, Total | DNQ .35 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920690 | |
| Jan 19, 2017 | Electrical Conductivity @ 25 Deg. C | 39.1 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 920690 | |
| Jan 19, 2017 | Iron, Total | .446 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920690 | |
| Jan 19, 2017 | Nitrite Plus Nitrate (as N) | .08 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 920690 | |
| Jan 19, 2017 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 920690 | |
| Jan 19, 2017 | pH | 7.43 | SU | Effluent | Qualifying Storm Event | A4500HB | 920690 | |
| Jan 19, 2017 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 920690 | |
| Jan 19, 2017 | Zinc, Total | .224 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920690 | |
| Jan 09, 2017 | Aluminum, Total | .17 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920583 | |
| Jan 09, 2017 | Electrical Conductivity @ 25 Deg. C | 47.3 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 920583 | |
| Jan 09, 2017 | Iron, Total | .273 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920583 | |
| Jan 09, 2017 | Nitrite Plus Nitrate (as N) | .26 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 920583 | |
| Jan 09, 2017 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 920583 | |
| Jan 09, 2017 | pH | 6.78 | SU | Effluent | Qualifying Storm Event | A4500HB | 920583 | |
| Jan 09, 2017 | Total Suspended Solids (TSS) | DNQ 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 920583 | |
| Jan 09, 2017 | Zinc, Total | 2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920583 | |
| Jan 05, 2017 | Aluminum, Total | DNQ .42 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920573 | |
| Jan 05, 2017 | Electrical Conductivity @ 25 Deg. C | 35.5 | umhos/cm | Effluent | Qualifying Storm Event | A2510B | 920573 | |
| Jan 05, 2017 | Iron, Total | .412 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920573 | |
| Jan 05, 2017 | Nitrite Plus Nitrate (as N) | .23 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 920573 | |
| Jan 05, 2017 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 920573 | |
| Jan 05, 2017 | pH | 7.17 | SU | Effluent | Qualifying Storm Event | A4500HB | 920573 | |
| Jan 05, 2017 | Total Suspended Solids (TSS) | DNQ 6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 920573 | |
| Jan 05, 2017 | Zinc, Total | 1.7 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 920573 | |
| Dec 16, 2016 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 916115 | |
| Dec 16, 2016 | Iron, Total | .137 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 916115 | |
| Dec 16, 2016 | Nitrite Plus Nitrate (as N) | 1.07 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 916115 | |
| Dec 16, 2016 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 916115 | |
| Dec 16, 2016 | pH | 7.57 | SU | Effluent | Qualifying Storm Event | A4500HB | 916115 | |
| Dec 16, 2016 | Total Suspended Solids (TSS) | DNQ 9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 916115 | |
| Dec 16, 2016 | Zinc, Total | 1.64 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 916115 | |
| Sep 20, 2016 | Aluminum, Total | .16 | mg/L | Effluent | Qualifying Storm Event | EPA 200.7 | 907450 | |
| Sep 20, 2016 | Aluminum, Total | .2 | mg/L | Effluent | Qualifying Storm Event | EPA 200.7 | 907450 | |
| Sep 20, 2016 | Iron, Total | .208 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 907450 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 1 | inspections, not findings | Jun 23, 2015 – Jun 23, 2015 | 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 (12 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 21, 2026 | Annual reports | 1337941 | Annual report 2025 | — | |
| Jul 11, 2025 | Annual reports | 1296883 | Annual report 2024 | — | |
| Jul 08, 2024 | Annual reports | 1246112 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1192249 | Annual report 2022 | — | |
| Jul 08, 2022 | Annual reports | 1115903 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1064030 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 980980 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 957265 | Annual report 2018 | — | |
| Jul 13, 2018 | Annual reports | 942700 | Annual report 2017 | — | |
| Jul 12, 2017 | Annual reports | 882184 | Annual report 2016 | — | |
| Jun 13, 2016 | Annual reports | 839981 | Annual report 2015 | — | |
| Jun 23, 2015 | Inspections | 2026054 | Inspection from Vehicle | — | Follow-up Inspection Needed |
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.