Industrial stormwater facility
WDID 1 23I005730 · Notice of Intent · Gualala, Mendocino
SIC 5093 · Scrap and Waste Materials · Regional Board 1 - North Coast Region
Hydrologic
Official facility coordinate plotted against the associated Final 2026 Integrated Report impaired-water geometry.
Geometry shown is limited to waterbodies geographically associated with this facility. Geographic association does not establish a discharge connection, receiving-water connectivity, or causation.
Intelligence summary
What is available for this facility across the connected datasets.
Official
303(d) context
Grouped by derived geographic association class.
River & Stream · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (2) Sediment, Temperature, water
River & Stream · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (5) Aluminum, Benthic Community Effects, Sediment, Sedimentation/Siltation, Temperature, water
Associations are calculated from official facility coordinates, USGS HUC12 boundaries, and official 2026 impaired-water geometry. They do not establish a discharge connection or causation.
Water Board-stated TMDL waste load allocations applied to this industrial permit in SMARTS.
No SMARTS TMDL requirement is recorded for this WDID. In the statewide TMDL export only permits in Regions 4, 8 and 9 currently carry industrial TMDL requirements, so an absence here is not a statement that the facility discharges to an unimpaired water.
Official monitoring
Self-reported industrial stormwater sampling results as submitted by the discharger to SMARTS.
Loading reported results…
| Sample date | Location | Parameter | Result | Units | Event |
|---|---|---|---|---|---|
| 2026-03-23 | SW-3 | Aluminum | .37 | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Chemical oxygen demand (COD) | 180 | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Iron | .69 | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Lead | .00043 | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | pH | 7.7 | SU | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Total Suspended Solids (TSS) | 23 | mg/L | Qualifying Storm Event |
| 2026-03-23 | SW-3 | Zinc | .014 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Aluminum | .02 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Chemical oxygen demand (COD) | 34 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Iron | .38 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Lead | .00064 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Oil and Grease | 1.6 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | pH | 7.2 | SU | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Total Suspended Solids (TSS) | 1.5 | mg/L | Qualifying Storm Event |
| 2026-02-23 | SW-2 | Zinc | .026 | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Aluminum | .66 | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Chemical oxygen demand (COD) | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Iron | .93 | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Lead | .000037 | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | pH | 7.2 | SU | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Total Suspended Solids (TSS) | 7.2 | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-1 | Zinc | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-12-29 | SW-2 | Aluminum | .26 | mg/L | Qualifying Storm Event |
Monitoring rows are official self-reported SMARTS submissions, joined to this facility by WDID. California Stormwater Intelligence does not restate, correct, average or evaluate reported values, and no benchmark comparison or violation determination is made.
YDOS-derived
Reported SMARTS analytical results compared against the Numeric Action Levels of the Industrial General Permit version in effect for each reporting year (July 1 – June 30).
| Parameter | NAL type | Calculated value | NAL | Result | Samples used | Method |
|---|---|---|---|---|---|---|
Aluminum, Total aluminum_total | Annual | 0.195 mg/L | 0.75 mg/L | At or below NALAnnual average of 2 eligible result(s) compared with the annual NAL.0.26× threshold | 2 eligible | arithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported) |
Chemical Oxygen Demand (COD) cod | Annual | 107 mg/L | 120 mg/L | At or below NALAnnual average of 2 eligible result(s) compared with the annual NAL.0.89× threshold | 2 eligible | arithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported) |
Iron, Total iron_total | Annual | 0.535 mg/L | 1 mg/L | At or below NALAnnual average of 2 eligible result(s) compared with the annual NAL.0.54× threshold | 2 eligible | arithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported) |
Lead, Total lead_total | Annual | 5.35e-4 mg/L | 0.262 mg/L | At or below NALAnnual average of 2 eligible result(s) compared with the annual NAL.0× threshold | 2 eligible | arithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported) |
Oil and Grease oil_grease | Instantaneous maximum | —0 samples above | 25 mg/L | At or below NALNo eligible result in this reporting year was outside the instantaneous maximum NAL. | 2 eligible1 non-detect as zero | count of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year |
pH ph | Instantaneous maximum | —0 samples above | 6 – 9 pH units | Within NAL rangeNo eligible result in this reporting year was outside the instantaneous maximum NAL. | 2 eligible | count of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year |
Total Suspended Solids (TSS) tss | Instantaneous maximum | —0 samples above | 400 mg/L | At or below NALNo eligible result in this reporting year was outside the instantaneous maximum NAL. | 2 eligible | count of eligible effluent results outside the instantaneous maximum NAL within the July 1 - June 30 reporting year |
Zinc, Total zinc_total | Annual | 0.02 mg/L | 0.26 mg/L | At or below NALAnnual average of 2 eligible result(s) compared with the annual NAL.0.08× threshold | 2 eligible | arithmetic mean of all eligible effluent results in the July 1 - June 30 reporting year (censored results assigned zero only where MDL and ML were both reported) |
An NAL exceedance is a permit-defined condition that triggers Exceedance Response Actions under the Industrial General Permit. It is not a violation, an enforcement action, or a Water Board compliance determination. Annual values use the arithmetic average of eligible results with non-detects treated as zero; instantaneous maximum NALs (total suspended solids, oil and grease, pH) are exceeded when two or more eligible results in a reporting year fall outside the level. Rules transcribed from 2014-0057-DWQ as amended by 2015-0122-DWQ ↗ (effective 2015-07-01, superseded 2020-06-30); 2014-0057-DWQ as amended by 2018-0028-DWQ ↗ (effective 2020-07-01).
Documents
Attachment inventory recorded in the State Water Board SMARTS public attachment workflow for this permit.
Metadata indicators
DerivedDocument indicators are YDOS-derived counts and dates calculated from SMARTS attachment metadata. They describe what is on file, not whether a facility complied with any requirement.
45 substantive of 76 indexed attachments
20210609-SCL-SWPPP-Amend3
Source file type SWPPP · part 1/1 · 2021-06-11 · 11.4 MB
20210609-SCL-SWPPP-Amend3
Source file type SWPPP · part 1/1 · 2021-06-10 · 11.4 MB
AppA-Figures
Source file type Facility/Site Map · part 1/1 · 2021-06-10 · 3.2 MB
SWPPP Amendment 2
Source file type SWPPP · part 1/1 · 2018-03-02 · 4.5 MB
Amendment 1
Source file type SWPPP · part 1/1 · 2016-02-29 · 104 KB
SITE MAPS
Source file type Facility/Site Map · part 1/1 · 2015-06-29 · 442 KB
Stormwater Pollution Prevention Plan
Source file type SWPPP · part 1/1 · 2015-06-29 · 3.7 MB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-07 · 819 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-03-30 · 407 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-08 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-02-04 · 408 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-07-11 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-02-07 · 408 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-07-31 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-07-03 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-06-09 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-03-24 · 408 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-09-06 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-04-26 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-14 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-04-23 · 105 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-07-15 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-04-08 · 104 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-07-11 · 10 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-07-06 · 10 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-11 · 10 KB
QSE 2-23-26
Source file type Laboratory Results · 2026-03-29 · 1.3 MB
QSE_Dec 29 2024_MCSC
Source file type Laboratory Results · 2025-02-03 · 1.2 MB
QSE_MCSCTS_Lab Results_01142024
Source file type Laboratory Results · 2024-02-07 · 766 KB
QSE 12-8-2022
Source file type Laboratory Results · 2023-06-03 · 1.1 MB
QSE_SCTS_Lab Results_12302022
Source file type Laboratory Results · 2023-03-23 · 1.5 MB
Mar 28, 2022 lab rpt
Source file type Laboratory Results · 2022-04-25 · 721 KB
Mar 18, 2021 lab rpt
Source file type Laboratory Results · 2021-04-13 · 798 KB
Mar 20, 2019 lab rpt
Source file type Laboratory Results · part 1/1 · 2019-04-05 · 673 KB
Dec 17, 2018 lab rpt
Source file type Laboratory Results · part 1/1 · 2019-01-11 · 701 KB
Mar 21, 2017 lab rpt
Source file type Laboratory Results · part 1/1 · 2017-04-07 · 1.5 MB
Dec 14, 2016 lab rpt
Source file type Laboratory Results · part 1/1 · 2017-02-13 · 650 KB
Mar 7, 2016 lab rpt
Source file type Laboratory Results · part 1/1 · 2016-07-11 · 1.1 MB
Dec 14, 2015
Source file type Laboratory Results · part 1/1 · 2016-01-21 · 620 KB
Dec 21, 2015 lab rpt
Source file type Laboratory Results · part 1/1 · 2016-01-19 · 630 KB
Compliance Group Inspection
Source file type Supporting Documentation · 2026-07-03 · 472 KB
Compliance Group Inspection
Source file type Supporting Documentation · 2024-06-29 · 211 KB
Compliance Group Inspection
Source file type Supporting Documentation · 2023-07-02 · 247 KB
Image of Property Boundary/Industrial Area
Source file type Supporting Documentation · 2022-09-06 · 15.4 MB
Sample Frequency Reduction Certification
Source file type Memo · part 1/1 · 2018-03-02 · 170 KB
Enforcement
Enforcement actions as recorded by the State Water Board for this permit, in the source system's own terminology.
Structured enforcement records are not yet connected for this site. The absence of a record is not a finding about this facility.
Reporting
Annual report and Exceedance Response Action information as stated by the source system, distinguished from what is inferred from document metadata.
Annual report documents on file
DerivedYears are YDOS-derived from attachment metadata. A gap means no annual-report document was identified for that year in the attachment index — it is not a finding that a report was not filed.
Recent activity
New or changed source records this platform detected for this permit, newest first.
No source change has been detected for this permit yet. Change detection begins from the date each dataset was first indexed.
Provenance