Aircraft X Ray Laboratories Inc

Active WDID 4 19I016489 Huntington Park, 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: Huntington Park, Los Angeles County; Region 4 · Los Angeles · Location · Statewide map
Receiving water: Los Angeles River (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: None
Monitoring results Evidence: facility-reported: 857 distinct results, 11 reporting years (2015 to 2025); Most recent sample Jan 02, 2026 · Monitoring
Compliance and enforcement records Evidence: SMARTS record: 1 inspection · 3 violation records · 3 enforcement actions; Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported: 6 records; TMDL records

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

Open this facility on the statewide map

Reported location Evidence: facility-reported

Coordinates: 33.99556, -118.22525
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: 5216 Pacific Blvd, Huntington Park 90255
Regional Water Board: 4 — Los Angeles

HUC12 watershed Evidence: spatial

Chavez Ravine-Los Angeles River HUC12 180701050401

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: Aircraft X Ray Laboratories Inc
Primary industry (SIC): 3471-Electroplating, Plating, Polishing, Anodizing, and Coloring
Application ID: 191176
NOI processed: Apr 25, 2001
Last certified: Mar 21, 2024
Facility size: 2 Acres
Impervious area: 100 %

Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.

Permit history

Storm water applications for this WDID, newest first
Application	Type	Status	Processed	Terminated	Certified
191176	Industrial	Active	Apr 25, 2001	—	Mar 21, 2024

Every storm water application SMARTS records for this WDID, newest first (1).

Receiving water

Reported by the facility Evidence: facility-reported: Los Angeles River
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

7 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.

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 records SMARTS lists for this 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	Copper, Total	.06749 mg/L	NEL instantaneous	FINAL	2020-07-01	Y
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	Nitrate, Total (as N)	8 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
Los Angeles River Nitrogen TMDL	Los Angeles River Watershed	Nitrite, Total (as N)	1 mg/L	NEL instantaneous	FINAL	2020-07-01	Y

6 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.

857 distinct measurements across 11 parameters, most recent sample Jan 02, 2026.

By reporting year

Distinct results by reporting year
Reporting year (July–June)	Distinct results	Parameters	First sample	Last sample
2025	120	10	Dec 23, 2025	Jan 02, 2026
2024	60	10	Mar 12, 2025	Mar 12, 2025
2023	120	10	Dec 21, 2023	Feb 01, 2024
2022	70	10	Jan 09, 2023	Mar 12, 2025
2021	60	11	Dec 14, 2021	Dec 14, 2021
2020	60	10	Mar 10, 2021	Mar 10, 2021
2019	60	10	Dec 04, 2019	Dec 04, 2019
2018	132	10	Nov 29, 2018	Mar 21, 2019
2017	60	10	Mar 02, 2018	Mar 02, 2018
2016	108	9	Dec 30, 2016	Feb 03, 2017
2015	7	7	Mar 11, 2016	Mar 11, 2016

By parameter

Distinct results by parameter
Parameter	Units	Measurements	Below detection	First sample	Last sample	Results
Zinc, Total	mg/L	98	7	Mar 11, 2016	Jan 02, 2026	Results
Aluminum, Total	mg/L	86	27	Mar 11, 2016	Jan 02, 2026	Results
Iron, Total	mg/L	86	26	Mar 11, 2016	Jan 02, 2026	Results
Nitrite Plus Nitrate (as N)	mg/L	86	28	Mar 11, 2016	Jan 02, 2026	Results
Oil and Grease	mg/L	86	81	Mar 11, 2016	Jan 02, 2026	Results
Total Suspended Solids (TSS)	mg/L	86	57	Mar 11, 2016	Jan 02, 2026	Results
Chromium (Total)	mg/L	85	65	Dec 30, 2016	Jan 02, 2026	Results
pH	SU	85	0	Mar 11, 2016	Jan 02, 2026	Results
Copper, Total	mg/L	73	5	Mar 02, 2018	Jan 02, 2026	Results
Lead, Total	mg/L	73	42	Mar 02, 2018	Jan 02, 2026	Results
Total Dissolved Solids (TDS)	mg/L	13	0	Dec 30, 2016	Dec 14, 2021	Results

All results (857 distinct rows)

Reported monitoring results, newest first
Sample date	Parameter	Result	Units	Location type	Event	Method	Report
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Aluminum, Total	< .0285	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Chromium (Total)	< .007	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	< .0021	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	< .0021	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	.0027	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	.0029	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	.0032	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Copper, Total	.0032	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Iron, Total	< .00926	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Lead, Total	< .0017	mg/L	Effluent	Qualifying Storm Event	E200.7	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Nitrite Plus Nitrate (as N)	< .145	mg/L	Effluent	Qualifying Storm Event	E300.0	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	Oil and Grease	< 2.5	mg/L	Effluent	Qualifying Storm Event	E1664A	1364366
Jan 02, 2026	pH	6.42	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	pH	6.56	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	pH	6.58	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	pH	6.3	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	pH	6.25	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	pH	6.22	SU	Effluent	Qualifying Storm Event	pH_Field	1364366
Jan 02, 2026	Total Suspended Solids (TSS)	< 5	mg/L	Effluent	Qualifying Storm Event	A2540D	1364366
Jan 02, 2026	Total Suspended Solids (TSS)	< 5	mg/L	Effluent	Qualifying Storm Event	A2540D	1364366

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.

Compliance and enforcement records by type
Record type	Records	As published	Dates	Retrieved	List
Violations	3	2 Violation · 1 Potential (preliminary) · 0 Dismissed	Oct 08, 2008 – Apr 03, 2025	Oct 21, 2026	All violations
Enforcement actions	3	3 issued · 0 draft · 0 withdrawn, rescinded or superseded	Oct 08, 2008 – Apr 03, 2025	Oct 21, 2026	All actions
Inspections	1	inspections, not findings	Oct 08, 2008 – Oct 08, 2008	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 (18 records, newest first)

Compliance and enforcement records, newest first
Date	Record	ID	Type or purpose	Status as published	Detail
Jul 13, 2026	Annual reports	1336843	Annual report 2025	—
Jul 14, 2025	Annual reports	1295728	Annual report 2024	—
Apr 03, 2025	Enforcement actions	455716	ACL (Administrative Civil Liability)	Historical	R4-2025-0125
Apr 03, 2025	Violations	891021	Late Report	Violation	Report
Jul 12, 2024	Annual reports	1244893	Annual report 2023	—
Jul 10, 2024	Violations	889230	Enforcement Action	Potential	Internal Report
Jul 09, 2024	Enforcement actions	453534	13383 Order (Water Code section 13383 order)	Historical	R4-2024-0188
Jul 12, 2023	Annual reports	1190973	Annual report 2022	—
Jul 15, 2022	Annual reports	1114489	Annual report 2021	—
Jul 09, 2021	Annual reports	1070581	Annual report 2020	—
Jul 15, 2020	Annual reports	987986	Annual report 2019	—
Jul 12, 2019	Annual reports	955614	Annual report 2018	—
Jul 16, 2018	Annual reports	941036	Annual report 2017	—
Jul 13, 2017	Annual reports	880400	Annual report 2016	—
Jul 15, 2016	Annual reports	846062	Annual report 2015	—
Oct 08, 2008	Enforcement actions	355919	NTC (Notice to Comply)	Historical	Field NTC
Oct 08, 2008	Inspections	1535185	B Type compliance	—	Additional Info Required
Oct 08, 2008	Violations	794748	Deficient BMP Implementation	Violation	Inspection

Sources and provenance

Sources behind this page
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.