Industrial stormwater facility
WDID 1 23I018049 · Notice of Intent · Mendocino, Mendocino
SIC 4151 · School Buses · 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) Oxygen, Dissolved, Sediment, Sedimentation/Siltation, Temperature, water
Coastal & Bay Shoreline · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (1) Indicator Bacteria
Coastal & Bay Shoreline · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (1) Indicator Bacteria
River & Stream · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (3) Sediment, Sedimentation/Siltation, Temperature, water
Coastal & Bay Shoreline · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (1) Indicator Bacteria
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 |
|---|---|---|---|---|---|
| 2024-01-16 | Storm Drain | Oil and Grease | 3.8 | mg/L | Qualifying Storm Event |
| 2024-01-16 | Storm Drain | pH | 6.5 | SU | Qualifying Storm Event |
| 2024-01-16 | Storm Drain | Total Suspended Solids (TSS) | 25 | mg/L | Qualifying Storm Event |
| 2023-10-10 | Storm Drain | Oil and Grease | DNQ 3.4(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2023-10-10 | Storm Drain | pH | 6 | SU | Qualifying Storm Event |
| 2023-10-10 | Storm Drain | Total Suspended Solids (TSS) | 47 | mg/L | Qualifying Storm Event |
| 2022-12-08 | Storm Drain | Oil and Grease | DNQ 1.8(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-12-08 | Storm Drain | pH | 7 | SU | Qualifying Storm Event |
| 2022-12-08 | Storm Drain | Total Suspended Solids (TSS) | 23 | mg/L | Qualifying Storm Event |
| 2022-12-01 | Storm Drain | Oil and Grease | DNQ 2.9(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-12-01 | Storm Drain | pH | 6.8 | SU | Qualifying Storm Event |
| 2022-12-01 | Storm Drain | Total Suspended Solids (TSS) | 53 | mg/L | Qualifying Storm Event |
| 2022-11-07 | Storm Drain | Electrical Conductivity | 49 | umhos/cm | Qualifying Storm Event |
| 2022-11-07 | Storm Drain | Oil and Grease | DNQ 1.8(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-11-07 | Storm Drain | pH | 6.8 | SU | Qualifying Storm Event |
| 2022-11-07 | Storm Drain | Total Suspended Solids (TSS) | 36 | mg/L | Qualifying Storm Event |
| 2022-04-11 | Storm Drain | Electrical Conductivity | 49 | umhos/cm | Qualifying Storm Event |
| 2022-04-11 | Storm Drain | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-04-11 | Storm Drain | Total Suspended Solids (TSS) | 3.6 | mg/L | Qualifying Storm Event |
| 2022-04-04 | Storm Drain | Electrical Conductivity | 77 | umhos/cm | Qualifying Storm Event |
| 2022-04-04 | Storm Drain | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2022-04-04 | Storm Drain | Total Suspended Solids (TSS) | 230 | mg/L | Qualifying Storm Event |
| 2021-10-21 | Storm Drain | Electrical Conductivity | DNQ 11(non-detect / est.) | umhos/cm | Qualifying Storm Event |
| 2021-10-21 | Storm Drain | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2021-10-21 | Storm Drain | Total Suspended Solids (TSS) | 5.9 | 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 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 |
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.
69 substantive of 100 indexed attachments
SWPPP_06-2022
Source file type SWPPP · 2023-01-12 · 2.9 MB
SW Site Map_05-2022
Source file type Facility/Site Map · 2022-05-13 · 317 KB
K8 SWPP Site Map
Source file type Facility/Site Map · part 1/1 · 2015-08-11 · 277 KB
SWPP
Source file type SWPPP · part 1/1 · 2015-08-11 · 2.9 MB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-13 · 819 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-14 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-05-29 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-05-29 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-05-29 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-08-07 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-08-07 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-08-07 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-01-12 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-01-12 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-11 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-11 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-11 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-11 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-11 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-14 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-08-21 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-09-03 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-05-08 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-05-01 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-06-27 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-06-27 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-06-27 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-03-20 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-08-03 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-08-03 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-08-03 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2015-08-11 · 245 KB
032922 inspection report
Source file type Final Inspection Report · 2022-04-19 · 1.4 MB
01-16-2024 QSE Results
Source file type Laboratory Results · 2024-02-07 · 770 KB
10-10-23 Lab Report
Source file type Laboratory Results · 2023-11-09 · 754 KB
12-8-22 Lab Results
Source file type Laboratory Results · 2023-01-13 · 780 KB
11-07-22 QSE Results
Source file type Laboratory Results · 2023-01-05 · 850 KB
12-01-2022 SW Results
Source file type Laboratory Results · 2023-01-03 · 771 KB
04-04-2022 QSE Results
Source file type Laboratory Results · 2022-05-09 · 712 KB
04-11-2022 QSE
Source file type Laboratory Results · 2022-05-09 · 761 KB
10-21-21 QSE
Source file type Laboratory Results · 2022-05-09 · 709 KB
09-27-2021 QSE
Source file type Laboratory Results · 2022-05-09 · 791 KB
Event 3
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 552 KB
Event 2
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 550 KB
Event 1 lab results
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 545 KB
event 3 lab results
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 552 KB
event 2 lab results
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 550 KB
event 1 lab results
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 545 KB
event 1 lab results
Source file type Laboratory Results · part 1/1 · 2017-06-27 · 798 KB
event 3
Source file type Laboratory Results · part 1/1 · 2017-06-27 · 767 KB
Sample 2
Source file type Laboratory Results · part 1/1 · 2017-03-17 · 797 KB
Event 2
Source file type Laboratory Results · part 1/1 · 2016-08-03 · 720 KB
Event 1
Source file type Laboratory Results · part 1/1 · 2016-08-03 · 399 KB
Event 1
Source file type Laboratory Results · part 1/1 · 2016-07-12 · 399 KB
Event 2
Source file type Laboratory Results · part 1/1 · 2016-07-12 · 720 KB
Evet # 2
Source file type Laboratory Results · part 1/1 · 2016-02-10 · 720 KB
Event #1
Source file type Laboratory Results · part 1/1 · 2016-02-10 · 399 KB
Termination Letter
Source file type Supporting Documentation · 2024-10-09 · 1.0 MB
event 2
Source file type Supporting Documentation · 2021-07-14 · 737 KB
event 1
Source file type Supporting Documentation · 2021-07-14 · 678 KB
Event 2
Source file type Other · 2020-08-21 · 675 KB
Event 1
Source file type Other · 2020-08-21 · 718 KB
event 2
Source file type Supporting Documentation · 2020-08-21 · 675 KB
Event 1
Source file type Supporting Documentation · 2020-08-21 · 718 KB
Mendo Bus Maintenance
Source file type Photograph · part 1/1 · 2017-01-19 · 2.1 MB
Mendo Bus Maintenance
Source file type Photograph · part 1/1 · 2017-01-19 · 2.0 MB
Swarm Attachment
Source file type Swarm Attachment · 2016-08-02 · 234 KB
Storm Water Sample
Source file type Supporting Documentation · part 1/1 · 2015-08-11 · 402 KB
141001_PRK_ef_IGPThankYouSchool Bus Manintenance Yard.pdf
Source file type Cover/Explanation Letter · part 1/1 · 2014-10-21 · 442 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