Industrial stormwater facility
WDID 1 12I019992 · Notice of Intent · Mc Kinleyville, Humboldt
SIC 1442 · Construction Sand and Gravel · 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 (6) Aluminum, Sediment, Sedimentation/Siltation, Specific Conductivity, Temperature, water, Turbidity
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 |
|---|---|---|---|---|---|
| 2022-01-04 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | .12 | mg/L | Qualifying Storm Event |
| 2022-01-04 | Sample Point | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-01-04 | Sample Point | pH | 7.8 | SU | Qualifying Storm Event |
| 2022-01-04 | Sample Point | Total Suspended Solids (TSS) | 3.8 | mg/L | Qualifying Storm Event |
| 2019-02-25 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | .16 | mg/L | Qualifying Storm Event |
| 2019-02-25 | Sample Point | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2019-02-25 | Sample Point | pH | 8.1 | SU | Qualifying Storm Event |
| 2019-02-25 | Sample Point | Total Suspended Solids (TSS) | 24 | mg/L | Qualifying Storm Event |
| 2016-12-15 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | .15 | mg/L | Qualifying Storm Event |
| 2016-12-15 | Sample Point | Oil and Grease | DNQ 4.4(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2016-12-15 | Sample Point | pH | 7.8 | SU | Qualifying Storm Event |
| 2016-12-15 | Sample Point | Total Suspended Solids (TSS) | 52 | mg/L | Qualifying Storm Event |
| 2016-03-21 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | .089 | mg/L | Qualifying Storm Event |
| 2016-03-21 | Sample Point | Oil and Grease | 1.2 | mg/L | Qualifying Storm Event |
| 2016-03-21 | Sample Point | pH | 7.8 | SU | Qualifying Storm Event |
| 2016-03-21 | Sample Point | Total Suspended Solids (TSS) | 250 | mg/L | Qualifying Storm Event |
| 2016-02-19 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | .054 | mg/L | Qualifying Storm Event |
| 2016-02-19 | Sample Point | Oil and Grease | < .88(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2016-02-19 | Sample Point | pH | 7.4 | SU | Qualifying Storm Event |
| 2016-02-19 | Sample Point | Total Suspended Solids (TSS) | 44 | mg/L | Qualifying Storm Event |
| 2015-12-18 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | 1.23 | mg/L | Qualifying Storm Event |
| 2015-12-18 | Sample Point | Nitrate/Nitrite (Nitrite + Nitrate as N) | 1.23 | mg/L | Qualifying Storm Event |
| 2015-12-18 | Sample Point | Oil and Grease | < .89(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2015-12-18 | Sample Point | Oil and Grease | < .89(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2015-12-18 | Sample Point | pH | 7.6 | SU | 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 |
|---|---|---|---|---|---|---|
Nitrite Plus Nitrate (as N) nitrate_nitrite_n | Annual | 0.12 mg/L as N | 0.68 mg/L as N | At or below NALAnnual average of 1 eligible result(s) compared with the annual NAL.0.18× threshold | 1 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. | 1 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. | 1 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. | 1 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.
32 substantive of 49 indexed attachments
Essex Site Map
Source file type Facility/Site Map · part 1/1 · 2015-07-02 · 2.9 MB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-15 · 819 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-14 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-07-12 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-07-14 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-07-14 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-01-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-15 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-07-15 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-07-16 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-04-22 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-07-13 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-07-10 · 11 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-13 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-05-19 · 407 KB
Essex Lab Results 1-4-2022
Source file type Laboratory Results · 2022-01-18 · 277 KB
Lab Results 2-25-2019
Source file type Laboratory Results · part 1/1 · 2019-03-12 · 342 KB
12/15/2016 Sample Results
Source file type Laboratory Results · part 1/1 · 2017-01-25 · 241 KB
MFC Essex Stormwater 160321
Source file type Laboratory Results · part 1/1 · 2016-05-19 · 213 KB
MFC Essex Stormwater 160219
Source file type Laboratory Results · part 1/1 · 2016-05-19 · 274 KB
MFC Essex Stormwater 151218
Source file type Laboratory Results · part 1/1 · 2016-05-19 · 199 KB
MFC Essex Stormwater 151210
Source file type Laboratory Results · part 1/1 · 2016-05-19 · 276 KB
MFC Essex Stormwater 160321
Source file type Laboratory Results · part 1/1 · 2016-04-12 · 213 KB
MFC Essex Stormwater 160219
Source file type Laboratory Results · part 1/1 · 2016-03-09 · 274 KB
MFC Essex Stormwater 151218
Source file type Laboratory Results · part 1/1 · 2016-01-19 · 199 KB
MFC Essex Storm Water 12/10/2015
Source file type Laboratory Results · part 1/1 · 2016-01-06 · 276 KB
Response to Inspection
Source file type Supporting Documentation · 2019-11-14 · 1.2 MB
SWPPP Amendment No 1
Source file type Other · 2019-10-11 · 9.6 MB
Inspection report
Source file type Photograph · 2019-10-09 · 4.5 MB
Mercer Fraser Essec
Source file type Photograph · part 1/1 · 2016-11-15 · 2.5 MB
Mercer Fraser Blue Lake
Source file type Photograph · part 1/1 · 2013-04-08 · 513 KB
Mercer Fraser Blue Lake
Source file type Photograph · part 1/1 · 2013-04-08 · 471 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