Associated Plating

Active WDID 4 19I016570 Santa Fe Springs, 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
Santa Fe Springs, Los Angeles County
Region 4 · Los Angeles · Location · Statewide map
Receiving water
Coyote Creek North Fork (as reported by the facility)
Evidence: identification corroborated Coyote Creek, North Fork Details
Identified receiving water on the 2026 303(d) list
Yes · 4 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
210 distinct results, 8 reporting years (2018 to 2025)
Most recent sample Feb 16, 2026 · Monitoring
Compliance and enforcement records Evidence: SMARTS record
1 inspection · 3 violation records · 2 enforcement actions
Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported
1 record
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
33.95261, -118.0596
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
9636 Ann Street, Santa Fe Springs 90670
Regional Water Board
4 — Los Angeles

HUC12 watershed Evidence: spatial

  • La Mirada Creek HUC12 180701060602

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
Associated Plating Company
Primary industry (SIC)
3471-Electroplating, Plating, Polishing, Anodizing, and Coloring
Application ID
191191
NOI processed
Jun 11, 2001
Last certified
Mar 13, 2020
Facility size
1.4 Acres
Impervious area
70 %

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

Permit history

Storm water applications for this WDID, newest first
ApplicationTypeStatusProcessedTerminatedCertified
191191 IndustrialActiveJun 11, 2001 —Mar 13, 2020

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

Receiving water

Reported by the facility Evidence: facility-reported
Coyote Creek North Fork
Discharges directly / indirectly
Y / N (as answered in the permit application)

Evidence: identification corroborated Coyote Creek, North Fork CAR4051501020081117111917

Receiving water reported by facility — waterbody identification corroborated by geographic evidence.

Nearest distance from the reported facility location: 2.8 km. Method receiving_water/2.

2026 Integrated Report status Evidence: State-published

Coyote Creek, North Fork is on the 2026 Clean Water Act section 303(d) list (4 Appendix A decisions; category 5).

2026 Appendix A decisions for the identified receiving water
PollutantCategoryListing decisionTMDL requirementDecision ID
Indicator Bacteria5Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) 5B · San Gabriel River Coliform (45)150288
Oil and Grease5List on 303(d) list (TMDL required list) 5A138912
Selenium5Do Not Delist from 303(d) list (TMDL required list) 5A · San Gabriel River Metals (39)138913
Zinc5List on 303(d) list (TMDL required list) 5A · San Gabriel River Metals (39)138914

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

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
TMDLWaterbody (as reported)ParameterLimitTypePeriodDueDischarges to TMDL water
R4 - San Gabriel River Metals and Selenium TMDLR4 - Coyote Creek and its tributary/iesZinc, Total .158 mg/LNEL instantaneous FINAL2020-07-01Y

1 record. 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.

210 distinct measurements across 7 parameters, most recent sample Feb 16, 2026.

By reporting year

Distinct results by reporting year
Reporting year (July–June)Distinct resultsParametersWith several versionsFirst sampleLast sample
2025427 0 Nov 14, 2025Feb 16, 2026
202477 0 Mar 12, 2025Mar 12, 2025
2023147 0 Feb 01, 2024Feb 20, 2024
2022287 0 Nov 08, 2022Jan 10, 2023
2021357 0 Oct 25, 2021Mar 28, 2022
2020497 0 Dec 28, 2020Mar 10, 2021
2019287 0 Nov 20, 2019Mar 17, 2020
201877 0 May 22, 2019May 22, 2019

By parameter

Distinct results by parameter
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Aluminum, Totalmg/L30 2May 22, 2019Feb 16, 2026 Results
Iron, Totalmg/L30 2May 22, 2019Feb 16, 2026 Results
Nitrite Plus Nitrate (as N)mg/L30 6May 22, 2019Feb 16, 2026 Results
Oil and Greasemg/L30 16May 22, 2019Feb 16, 2026 Results
pHSU30 0May 22, 2019Feb 16, 2026 Results
Total Suspended Solids (TSS)mg/L30 17May 22, 2019Feb 16, 2026 Results
Zinc, Totalmg/L30 1May 22, 2019Feb 16, 2026 Results

All results (210 distinct rows)

Reported monitoring results, newest first
Sample dateParameterResultUnitsLocation typeEventMethodReportVersions
Feb 16, 2026 Aluminum, Total < .1 mg/L Effluent Qualifying Storm Event E200.8 1369302
Feb 16, 2026 Aluminum, Total .13 mg/L Effluent Qualifying Storm Event E200.8 1369302
Feb 16, 2026 Iron, Total < .1 mg/L Effluent Qualifying Storm Event E200.8 1369302
Feb 16, 2026 Iron, Total < .1 mg/L Effluent Qualifying Storm Event E200.8 1369302
Feb 16, 2026 Nitrite Plus Nitrate (as N) < .2 mg/L Effluent Qualifying Storm Event E300.0 1369302
Feb 16, 2026 Nitrite Plus Nitrate (as N) < .2 mg/L Effluent Qualifying Storm Event E300.0 1369302
Feb 16, 2026 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1369302
Feb 16, 2026 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1369302
Feb 16, 2026 pH 6.84 SU Effluent Qualifying Storm Event pH_Field 1369302
Feb 16, 2026 pH 6.98 SU Effluent Qualifying Storm Event pH_Field 1369302
Feb 16, 2026 Total Suspended Solids (TSS) < 4 mg/L Effluent Qualifying Storm Event A2540D 1369302
Feb 16, 2026 Total Suspended Solids (TSS) < 4 mg/L Effluent Qualifying Storm Event A2540D 1369302
Feb 16, 2026 Zinc, Total < .01 mg/L Effluent Qualifying Storm Event E200.8 1369302
Feb 16, 2026 Zinc, Total .022 mg/L Effluent Qualifying Storm Event E200.8 1369302
Nov 20, 2025 Aluminum, Total .039 mg/L Effluent Qualifying Storm Event E200.8 1358989
Nov 20, 2025 Aluminum, Total .027 mg/L Effluent Qualifying Storm Event E200.8 1358994
Nov 20, 2025 Iron, Total .39 mg/L Effluent Qualifying Storm Event E200.8 1358989
Nov 20, 2025 Iron, Total .25 mg/L Effluent Qualifying Storm Event E200.8 1358994
Nov 20, 2025 Nitrite Plus Nitrate (as N) .21 mg/L Effluent Qualifying Storm Event E300.0 1358989
Nov 20, 2025 Nitrite Plus Nitrate (as N) < .2 mg/L Effluent Qualifying Storm Event E300.0 1358994
Nov 20, 2025 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1358989
Nov 20, 2025 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1358994
Nov 20, 2025 pH 6.38 SU Effluent Qualifying Storm Event pH_Field 1358989
Nov 20, 2025 pH 6.84 SU Effluent Qualifying Storm Event pH_Field 1358994
Nov 20, 2025 Total Suspended Solids (TSS) 9.3 mg/L Effluent Qualifying Storm Event A2540D 1358989
Nov 20, 2025 Total Suspended Solids (TSS) ND 4 mg/L Effluent Qualifying Storm Event A2540D 1358994
Nov 20, 2025 Zinc, Total .065 mg/L Effluent Qualifying Storm Event E200.8 1358989
Nov 20, 2025 Zinc, Total .1 mg/L Effluent Qualifying Storm Event E200.8 1358994
Nov 14, 2025 Aluminum, Total .064 mg/L Effluent Qualifying Storm Event E200.8 1358036
Nov 14, 2025 Aluminum, Total .07 mg/L Effluent Qualifying Storm Event E200.8 1358044
Nov 14, 2025 Iron, Total .35 mg/L Effluent Qualifying Storm Event E200.8 1358036
Nov 14, 2025 Iron, Total .45 mg/L Effluent Qualifying Storm Event E200.8 1358044
Nov 14, 2025 Nitrite Plus Nitrate (as N) < .2 mg/L Effluent Qualifying Storm Event E300.0 1358036
Nov 14, 2025 Nitrite Plus Nitrate (as N) .21 mg/L Effluent Qualifying Storm Event E300.0 1358044
Nov 14, 2025 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1358036
Nov 14, 2025 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664A 1358044
Nov 14, 2025 pH 6.87 SU Effluent Qualifying Storm Event pH_Field 1358036
Nov 14, 2025 pH 7.02 SU Effluent Qualifying Storm Event pH_Field 1358044
Nov 14, 2025 Total Suspended Solids (TSS) ND 8 mg/L Effluent Qualifying Storm Event A2540D 1358036
Nov 14, 2025 Total Suspended Solids (TSS) ND 8 mg/L Effluent Qualifying Storm Event A2540D 1358044
Nov 14, 2025 Zinc, Total .12 mg/L Effluent Qualifying Storm Event E200.8 1358036
Nov 14, 2025 Zinc, Total .072 mg/L Effluent Qualifying Storm Event E200.8 1358044
Mar 12, 2025 Aluminum, Total .31 mg/L Effluent Qualifying Storm Event E200.7 1328498
Mar 12, 2025 Iron, Total .21 mg/L Effluent Qualifying Storm Event E200.7 1328498
Mar 12, 2025 Nitrite Plus Nitrate (as N) < .2 mg/L Effluent Qualifying Storm Event E353.2 1328498
Mar 12, 2025 Oil and Grease < 5 mg/L Effluent Qualifying Storm Event E1664B 1328498
Mar 12, 2025 pH 7.03 SU Effluent Qualifying Storm Event pH_Field 1328498
Mar 12, 2025 Total Suspended Solids (TSS) 24 mg/L Effluent Qualifying Storm Event A2540D 1328498
Mar 12, 2025 Zinc, Total .073 mg/L Effluent Qualifying Storm Event E200.7 1328498
Feb 20, 2024 Aluminum, Total .26 mg/L Effluent Qualifying Storm Event E200.7 1282693

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 typeRecordsAs publishedDatesRetrievedList
Violations3 3 Violation · 0 Potential (preliminary) · 0 Dismissed Jan 01, 2020 – May 21, 2021 Oct 21, 2026 All violations
Enforcement actions2 2 issued · 0 draft · 0 withdrawn, rescinded or superseded Feb 19, 2020 – May 21, 2021 Oct 21, 2026 All actions
Inspections1inspections, not findings Feb 26, 2020 – Feb 26, 2020 Oct 21, 2026 All inspections
Annual reports11certified reports (contents not shown) 2015 – 2025 Oct 21, 2026 All reports
Water-quality-based corrective action reports0reports, 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 (17 records, newest first)
Compliance and enforcement records, newest first
DateRecordIDType or purposeStatus as publishedDetail
Jul 01, 2026 Annual reports 1336844 Annual report 2025 —
Jul 07, 2025 Annual reports 1295729 Annual report 2024 —
Jul 01, 2024 Annual reports 1244894 Annual report 2023 —
Jul 10, 2023 Annual reports 1190974 Annual report 2022 —
Jul 01, 2022 Annual reports 1114491 Annual report 2021 —
Jun 29, 2021 Annual reports 1070583 Annual report 2020 —
May 21, 2021 Enforcement actions 440740 NOV (Notice of Violation) Historical
May 21, 2021 Violations 877018 Incomplete/Insufficient SWPPP ViolationReport
Jul 02, 2020 Annual reports 987988 Annual report 2019 —
Feb 26, 2020 Inspections 2047018 B Type compliance FinalizedAdditional Info Required
Feb 26, 2020 Violations 872978 Late Report ViolationInspection
Feb 19, 2020 Enforcement actions 436290 NOV (Notice of Violation) Historical
Jan 01, 2020 Violations 872696 Late Report ViolationReport
Jul 10, 2019 Annual reports 955616 Annual report 2018 —
Jul 13, 2018 Annual reports 941038 Annual report 2017 —
Aug 17, 2017 Annual reports 880402 Annual report 2016 —
Sep 06, 2016 Annual reports 845883 Annual report 2015 —

Sources and provenance

Sources behind this page
InformationSourceRetrieved or published
Permit, location, receiving-water textSMARTS Industrial Application Specific DataOct 20, 2026
Permit historySMARTS Storm Water ApplicationsOct 20, 2026
Monitoring resultsSMARTS Industrial Parameter DataOct 20, 2026
Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12)USGS2026-10-22
2026 California Integrated Report, Appendix A: 2026 303(d) List (final)SWRCB2026-10-22
Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0)SWRCB GIS2026-10-22
SMARTS TMDL requirementsSMARTS2026-10-21

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

Records are shown as published and are not compliance determinations. How geographic context is derived.