Industrial stormwater facility
WDID 1 12I015562 · Notice of Intent · Willow Creek, Humboldt
SIC 1429 · Crushed and Broken Stone, NEC · 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 (4) Aluminum, 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 |
|---|---|---|---|---|---|
| 2026-04-01 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2026-04-01 | Discharge PT.# 2 | pH | 6.9 | SU | Qualifying Storm Event |
| 2026-04-01 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 2.7 | mg/L | Qualifying Storm Event |
| 2026-02-25 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2026-02-25 | Discharge PT.# 2 | pH | 6.9 | SU | Qualifying Storm Event |
| 2026-02-25 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 11 | mg/L | Qualifying Storm Event |
| 2025-02-24 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2025-02-24 | Discharge PT.# 2 | pH | 7.1 | SU | Qualifying Storm Event |
| 2025-02-24 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 44 | mg/L | Qualifying Storm Event |
| 2025-01-08 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2025-01-08 | Discharge PT.# 2 | pH | 7 | SU | Qualifying Storm Event |
| 2025-01-08 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 33 | mg/L | Qualifying Storm Event |
| 2024-11-25 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-11-25 | Discharge PT.# 2 | pH | 7.3 | SU | Qualifying Storm Event |
| 2024-11-25 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 29 | mg/L | Qualifying Storm Event |
| 2024-01-26 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-01-26 | Discharge PT.# 2 | pH | 7.2 | SU | Qualifying Storm Event |
| 2024-01-26 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 50 | mg/L | Qualifying Storm Event |
| 2024-01-11 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2024-01-11 | Discharge PT.# 2 | pH | 7.1 | SU | Qualifying Storm Event |
| 2024-01-11 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 66 | mg/L | Qualifying Storm Event |
| 2023-03-13 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2023-03-13 | Discharge PT.# 2 | pH | 7.2 | SU | Qualifying Storm Event |
| 2023-03-13 | Discharge PT.# 2 | Total Suspended Solids (TSS) | 26 | mg/L | Qualifying Storm Event |
| 2023-01-10 | Discharge PT.# 2 | Oil and Grease | ND —(non-detect / est.) | 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 |
|---|---|---|---|---|---|---|
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 eligible2 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 |
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.
98 substantive of 139 indexed attachments
Signed SWPPP
Source file type SWPPP · part 1/1 · 2016-06-13 · 10.1 MB
Site Map
Source file type Facility/Site Map · part 3/3 · 2015-06-10 · 239 KB
Location Map
Source file type Facility/Site Map · part 2/3 · 2015-06-10 · 319 KB
Area Map
Source file type Facility/Site Map · part 1/3 · 2015-06-10 · 383 KB
SWPPP BMP's
Source file type SWPPP · part 2/2 · 2015-06-10 · 4.3 MB
SWPPP
Source file type SWPPP · part 1/2 · 2015-06-10 · 91 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-12 · 819 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-04-15 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-03-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-13 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-03-27 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-01-22 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-12-11 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-07-03 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-02-15 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-01-24 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-06-27 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-04-06 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-01-30 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-07-02 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-08 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-01-20 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-07 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-04-04 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-02-14 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-01-13 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-07-12 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-04-16 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-01-29 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-01-06 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-06-18 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-03-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-02-04 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-01-10 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-12-12 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-06-26 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-03-22 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-02-07 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-06-14 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-02-24 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-01-24 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-12-23 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-11-01 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-06-26 · 850 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-02-18 · 403 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-02-18 · 403 KB
4-1-26 labs
Source file type Laboratory Results · 2026-04-15 · 202 KB
2-25-26 labs
Source file type Laboratory Results · 2026-03-18 · 208 KB
2-24-25 lab results
Source file type Laboratory Results · 2025-03-27 · 273 KB
1-8-25 Lab results
Source file type Laboratory Results · 2025-01-22 · 209 KB
lab results
Source file type Laboratory Results · 2024-12-11 · 270 KB
2-2-24 labs
Source file type Laboratory Results · 2024-02-15 · 185 KB
1-11-24 Lab Results
Source file type Laboratory Results · 2024-01-24 · 209 KB
3-13-23 lab results
Source file type Laboratory Results · 2023-04-06 · 267 KB
1-10-23 lab results
Source file type Laboratory Results · 2023-01-30 · 195 KB
4-21-22 Lab results
Source file type Laboratory Results · 2022-05-08 · 185 KB
1-6-22 Lab Results
Source file type Laboratory Results · 2022-01-20 · 322 KB
3/8/12 Lab results
Source file type Laboratory Results · 2021-04-04 · 319 KB
2-2-21 lab results
Source file type Laboratory Results · 2021-02-14 · 320 KB
12-17-2020 Lab Results
Source file type Laboratory Results · 2021-01-13 · 324 KB
3/31/2020 Lab results
Source file type Laboratory Results · 2020-04-16 · 265 KB
lab results
Source file type Laboratory Results · 2020-01-29 · 266 KB
lab results 12-23-19
Source file type Laboratory Results · part 1/1 · 2020-01-06 · 266 KB
2-13-19 lab results
Source file type Laboratory Results · part 1/1 · 2019-03-03 · 166 KB
LAB RESULTS 1-21-19
Source file type Laboratory Results · part 1/1 · 2019-02-04 · 256 KB
LAB RESULTS
Source file type Laboratory Results · part 1/1 · 2019-01-10 · 254 KB
Lab Results
Source file type Laboratory Results · part 1/1 · 2018-12-12 · 260 KB
SAMPLE RESULTS
Source file type Laboratory Results · part 1/1 · 2018-03-22 · 270 KB
12418 Sample report
Source file type Laboratory Results · part 1/1 · 2018-02-07 · 880 KB
Northcoast Lab results
Source file type Laboratory Results · part 1/1 · 2017-02-24 · 371 KB
1-9-17 Lab Results
Source file type Laboratory Results · part 1/1 · 2017-01-24 · 11 KB
12/12/16 Lab results
Source file type Laboratory Results · part 1/1 · 2016-12-23 · 387 KB
1/15/16 Analytical Report
Source file type Laboratory Results · part 1/1 · 2016-02-18 · 103 KB
1/6/16 Analytical report
Source file type Laboratory Results · part 1/1 · 2016-02-18 · 106 KB
12/14/15 Analytical Results
Source file type Laboratory Results · part 1/1 · 2016-02-18 · 98 KB
12/21/15 analytical report
Source file type Laboratory Results · part 1/1 · 2016-02-18 · 700 KB
2025-2026 annual report
Source file type Supporting Documentation · 2026-07-12 · 3.0 MB
2024-2025 Annual Inspection Report
Source file type Supporting Documentation · 2025-07-13 · 2.8 MB
Annual Inspection report
Source file type Supporting Documentation · 2024-07-03 · 2.4 MB
2022-2023 Annual inspection
Source file type Supporting Documentation · 2023-06-27 · 2.1 MB
2021-2022 Anual Inspection report
Source file type Supporting Documentation · 2022-07-02 · 3.0 MB
Annual Report
Source file type Other · 2021-07-07 · 2.4 MB
Storm water annual Inspection report
Source file type Supporting Documentation · 2020-07-12 · 3.2 MB
Inspection report
Source file type Photograph · 2019-09-03 · 4.8 MB
Anual Inspection Report
Source file type Supporting Documentation · 2019-06-18 · 2.4 MB
R Brown Quarry annual inspection report
Source file type Other · part 1/1 · 2018-06-26 · 2.4 MB
Storm Water Annual Inspection Report
Source file type Other · part 1/1 · 2016-06-26 · 3.5 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2016-03-11 · 3.1 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2016-03-11 · 2.1 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2016-03-11 · 2.8 MB
141001_PRK_ef_IGPThankYouR Brown and Sons Quarry.pdf
Source file type Cover/Explanation Letter · part 1/1 · 2014-10-21 · 442 KB
Brown Quarry
Source file type Supporting Documentation · part 1/1 · 2014-07-14 · 173 KB
Brown Quarry
Source file type Supporting Documentation · part 1/1 · 2014-07-14 · 13.0 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2014-05-27 · 2.5 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2014-05-27 · 2.3 MB
Brown Quarry
Source file type Photograph · part 1/1 · 2014-05-27 · 2.6 MB
suggested pond placement
Source file type Photograph · 2010-03-02 · 405 KB
Photograph
Source file type Photograph · 2010-03-02 · 446 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