Bay Area Rapid Transit Daly Ci

Active WDID 2 41I009420 Colma, San Mateo County Region 2 · San Francisco Bay

At a glance

Permit Evidence: SMARTS record
Active Industrial
Notice of Intent (WDID code I) · Permits and applications
Location Evidence: facility-reported
Colma, San Mateo County
Region 2 · San Francisco Bay · Location · Statewide map
Receiving water
Colma Creek (as reported by the facility)
Evidence: identification corroborated Colma Creek Details
Identified receiving water on the 2026 303(d) list
Yes · 1 Appendix A decision, category 4b 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
246 distinct results, 9 reporting years (2015 to 2024)
Most recent sample Nov 22, 2024 · Monitoring
Compliance and enforcement records Evidence: SMARTS record
0 inspections · 0 violation records · 0 enforcement actions
Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported
0 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
37.68391, -122.46816
Precision
5 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
255 D St, Colma 94014
Regional Water Board
2 — San Francisco Bay

HUC12 watershed Evidence: spatial

  • Colma Creek-Frontal San Francisco Bay Estuaries HUC12 180500040903

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
San Francisco Bay Area Rapid Transit District
Primary industry (SIC)
4013-Railroad Switching and Terminal Establishments
Application ID
182890
NOI processed
Nov 23, 1992
Last certified
Jul 10, 2026
Facility size
18.3 Acres

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

Permit history

Storm water applications for this WDID, newest first
ApplicationTypeStatusProcessedTerminatedCertified
182890 IndustrialActiveNov 23, 1992 —Jul 10, 2026

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

Receiving water

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

Evidence: identification corroborated Colma Creek CAR2044002020080624163112

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

Nearest distance from the reported facility location: 1.8 km. Method receiving_water/2.

2026 Integrated Report status Evidence: State-published

Colma Creek is on the 2026 Clean Water Act section 303(d) list (1 Appendix A decision; category 4b).

2026 Appendix A decisions for the identified receiving water
PollutantCategoryListing decisionTMDL requirementDecision ID
Trash4bDo Not Delist from 303(d) list (being addressed with action other than TMDL) 5C87612

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

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.

246 distinct measurements across 5 parameters, most recent sample Nov 22, 2024.

By reporting year

Distinct results by reporting year
Reporting year (July–June)Distinct resultsParametersWith several versionsFirst sampleLast sample
202455 0 Nov 22, 2024Nov 22, 2024
2023265 0 Dec 19, 2023Apr 13, 2024
2021155 0 Nov 09, 2021Dec 22, 2021
2020205 0 Feb 02, 2021Feb 11, 2021
2019255 0 Dec 18, 2019Apr 05, 2020
2018405 0 Nov 29, 2018Feb 13, 2019
2017405 0 Nov 16, 2017Mar 20, 2018
2016405 0 Oct 14, 2016Jan 18, 2017
2015355 0 Nov 09, 2015Nov 02, 2016

By parameter

Distinct results by parameter
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Copper, Totalmg/L50 0Nov 09, 2015Nov 22, 2024 Results
pHSU50 0Nov 09, 2015Nov 22, 2024 Results
Zinc, Totalmg/L50 0Nov 09, 2015Nov 22, 2024 Results
Oil and Greasemg/L48 42Nov 09, 2015Nov 22, 2024 Results
Total Suspended Solids (TSS)mg/L48 18Nov 09, 2015Nov 22, 2024 Results

All results (246 distinct rows)

Reported monitoring results, newest first
Sample dateParameterResultUnitsLocation typeEventMethodReportVersions
Nov 22, 2024 Copper, Total 15 mg/L Effluent Qualifying Storm Event E200.8 1316733
Nov 22, 2024 Oil and Grease 1.9 mg/L Effluent Qualifying Storm Event E1664B 1316733
Nov 22, 2024 pH 8.1 SU Effluent Qualifying Storm Event pH_Field 1316733
Nov 22, 2024 Total Suspended Solids (TSS) 6.6 mg/L Effluent Qualifying Storm Event A2540D 1316733
Nov 22, 2024 Zinc, Total 98 mg/L Effluent Qualifying Storm Event E200.8 1316733
Apr 13, 2024 Copper, Total .013 mg/L Effluent Qualifying Storm Event E200.8 1288252
Apr 13, 2024 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1288252
Apr 13, 2024 pH 8.1 SU Effluent Qualifying Storm Event pH_Field 1288252
Apr 13, 2024 Total Suspended Solids (TSS) 5.6 mg/L Effluent Qualifying Storm Event A2540D 1288252
Apr 13, 2024 Zinc, Total .057 mg/L Effluent Qualifying Storm Event E200.8 1288252
Jan 31, 2024 Copper, Total .017 mg/L Effluent Qualifying Storm Event E200.8 1288249
Jan 31, 2024 Copper, Total .025 mg/L Effluent Qualifying Storm Event E200.8 1288249
Jan 31, 2024 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1288249
Jan 31, 2024 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1288249
Jan 31, 2024 pH 8 SU Effluent Qualifying Storm Event pH_Field 1288249
Jan 31, 2024 pH 8.2 SU Effluent Qualifying Storm Event pH_Field 1288249
Jan 31, 2024 Total Suspended Solids (TSS) 4.4 mg/L Effluent Qualifying Storm Event A2540D 1288249
Jan 31, 2024 Total Suspended Solids (TSS) 28.8 mg/L Effluent Qualifying Storm Event A2540D 1288249
Jan 31, 2024 Zinc, Total .11 mg/L Effluent Qualifying Storm Event E200.8 1288249
Jan 31, 2024 Zinc, Total .25 mg/L Effluent Qualifying Storm Event E200.8 1288249
Dec 29, 2023 Copper, Total .016 mg/L Effluent Qualifying Storm Event E200.8 1288246
Dec 29, 2023 Copper, Total .014 mg/L Effluent Qualifying Storm Event E200.8 1288246
Dec 29, 2023 pH 7.8 SU Effluent Qualifying Storm Event pH_Field 1288246
Dec 29, 2023 pH 7.9 SU Effluent Qualifying Storm Event pH_Field 1288246
Dec 29, 2023 Zinc, Total .09 mg/L Effluent Qualifying Storm Event E200.8 1288246
Dec 29, 2023 Zinc, Total .18 mg/L Effluent Qualifying Storm Event E200.8 1288246
Dec 19, 2023 Copper, Total .034 mg/L Effluent Qualifying Storm Event E200.8 1288245
Dec 19, 2023 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1288245
Dec 19, 2023 pH 7.6 SU Effluent Qualifying Storm Event pH_Field 1288245
Dec 19, 2023 Total Suspended Solids (TSS) 6.8 mg/L Effluent Qualifying Storm Event A2540D 1288245
Dec 19, 2023 Zinc, Total .13 mg/L Effluent Qualifying Storm Event E200.8 1288245
Dec 22, 2021 Copper, Total .04 mg/L Effluent Qualifying Storm Event E200.8 1179795
Dec 22, 2021 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1179795
Dec 22, 2021 pH 8.31 SU Effluent Qualifying Storm Event pH_Field 1179795
Dec 22, 2021 Total Suspended Solids (TSS) ND mg/L Effluent Qualifying Storm Event A2540D 1179795
Dec 22, 2021 Zinc, Total .025 mg/L Effluent Qualifying Storm Event E200.8 1179795
Nov 09, 2021 Copper, Total .011 mg/L Effluent Qualifying Storm Event E200.8 1170552
Nov 09, 2021 Copper, Total .012 mg/L Effluent Qualifying Storm Event E200.8 1170552
Nov 09, 2021 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1170552
Nov 09, 2021 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1170552
Nov 09, 2021 pH 8.4 SU Effluent Qualifying Storm Event pH_Field 1170552
Nov 09, 2021 pH 8.4 SU Effluent Qualifying Storm Event pH_Field 1170552
Nov 09, 2021 Total Suspended Solids (TSS) DNQ 2 mg/L Effluent Qualifying Storm Event A2540D 1170552
Nov 09, 2021 Total Suspended Solids (TSS) DNQ 4 mg/L Effluent Qualifying Storm Event A2540D 1170552
Nov 09, 2021 Zinc, Total .1 mg/L Effluent Qualifying Storm Event E200.8 1170552
Nov 09, 2021 Zinc, Total .096 mg/L Effluent Qualifying Storm Event E200.8 1170552
Feb 11, 2021 Copper, Total .015 mg/L Effluent Qualifying Storm Event E200.8 1143920
Feb 11, 2021 Copper, Total .016 mg/L Effluent Qualifying Storm Event E200.8 1143920
Feb 11, 2021 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1143920
Feb 11, 2021 Oil and Grease ND mg/L Effluent Qualifying Storm Event E1664B 1143920

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
Violations0 0 Violation · 0 Potential (preliminary) · 0 Dismissed — Oct 21, 2026
Enforcement actions0 0 issued · 0 draft · 0 withdrawn, rescinded or superseded — Oct 21, 2026
Inspections0inspections, not findings — Oct 21, 2026
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 (11 records, newest first)
Compliance and enforcement records, newest first
DateRecordIDType or purposeStatus as publishedDetail
Jul 08, 2026 Annual reports 1335165 Annual report 2025 —
Jul 10, 2025 Annual reports 1293968 Annual report 2024 —
Jul 08, 2024 Annual reports 1243045 Annual report 2023 —
Jul 11, 2023 Annual reports 1189039 Annual report 2022 —
Jul 11, 2022 Annual reports 1112396 Annual report 2021 —
Jul 13, 2021 Annual reports 1068400 Annual report 2020 —
Jun 26, 2020 Annual reports 985636 Annual report 2019 —
Aug 28, 2019 Annual reports 953177 Annual report 2018 —
Jul 11, 2018 Annual reports 938593 Annual report 2017 —
Jul 13, 2017 Annual reports 877817 Annual report 2016 —
Jul 14, 2016 Annual reports 839330 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.