Industrial stormwater facility
WDID 1 23I017642 · Notice of Intent · Ukiah, Mendocino
SIC 2951 · Asphalt Paving Mixtures and Blocks · 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 (8) Aluminum, Copper, Manganese, Mercury, Sediment, Sedimentation/Siltation +2 more
River & Stream · Integrated Report category 5 · TMDL required
Listed pollutants / stressors (6) Oxygen, Dissolved, pH, Sediment, Sedimentation/Siltation, 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 |
|---|---|---|---|---|---|
| 2026-02-24 | DP-11 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2026-02-24 | DP-11 | pH | 7.5 | SU | Qualifying Storm Event |
| 2026-02-24 | DP-11 | Total Suspended Solids (TSS) | 9.5 | mg/L | Qualifying Storm Event |
| 2026-02-17 | DP-11 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2026-02-17 | DP-11 | pH | 7.3 | SU | Qualifying Storm Event |
| 2026-02-17 | DP-11 | Total Suspended Solids (TSS) | 29 | mg/L | Qualifying Storm Event |
| 2026-01-05 | DP-11 | Oil and Grease | 2.9 | mg/L | Qualifying Storm Event |
| 2026-01-05 | DP-11 | pH | 7.2 | SU | Qualifying Storm Event |
| 2026-01-05 | DP-11 | Total Suspended Solids (TSS) | 14 | mg/L | Qualifying Storm Event |
| 2025-12-29 | DP-11 | Oil and Grease | 2.5 | mg/L | Qualifying Storm Event |
| 2025-12-29 | DP-11 | pH | 8.5 | SU | Qualifying Storm Event |
| 2025-12-29 | DP-11 | Total Suspended Solids (TSS) | 460 | mg/L | Qualifying Storm Event |
| 2025-03-12 | DP-11 | Oil and Grease | 2.7 | mg/L | Qualifying Storm Event |
| 2025-03-12 | DP-11 | pH | 8.9 | SU | Qualifying Storm Event |
| 2025-03-12 | DP-11 | Total Suspended Solids (TSS) | 170 | mg/L | Qualifying Storm Event |
| 2025-03-12 | DP-5 | Oil and Grease | 2.5 | mg/L | Qualifying Storm Event |
| 2025-03-12 | DP-5 | pH | 8.6 | SU | Qualifying Storm Event |
| 2025-03-12 | DP-5 | Total Suspended Solids (TSS) | 89 | mg/L | Qualifying Storm Event |
| 2024-11-21 | DP-11 | Oil and Grease | 2.4 | mg/L | Qualifying Storm Event |
| 2024-11-21 | DP-11 | pH | 6.3 | SU | Qualifying Storm Event |
| 2024-11-21 | DP-11 | Total Suspended Solids (TSS) | 12 | mg/L | Qualifying Storm Event |
| 2023-01-04 | DP-11 | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2023-01-04 | DP-11 | pH | 8.2 | SU | Qualifying Storm Event |
| 2023-01-04 | DP-11 | Total Suspended Solids (TSS) | 6.2 | mg/L | Qualifying Storm Event |
| 2022-12-30 | DP-11 | Oil and Grease | 2.5 | 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. | 4 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. | 4 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 | —1 sample above | 400 mg/L | At or below NALOne eligible result in this reporting year was outside the instantaneous maximum NAL. The Order states the condition as two or more results in one reporting year. | 4 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.
92 substantive of 131 indexed attachments
2026_04_NSS_SWPPP
Source file type SWPPP · part 1/1 · 2026-05-01 · 37.6 MB
North State Street SWPPP 03-03-2025
Source file type SWPPP · 2025-03-03 · 37.4 MB
SWPPP Revision
Source file type SWPPP · part 1/1 · 2016-11-04 · 9.0 MB
SWPPP_Revised_060116
Source file type SWPPP · part 1/1 · 2016-07-01 · 8.1 MB
SWPPP
Source file type SWPPP · part 1/1 · 2015-07-01 · 8.6 MB
Figure 2
Source file type Facility/Site Map · part 2/2 · 2015-07-01 · 4.8 MB
Figure 1
Source file type Facility/Site Map · part 1/2 · 2015-07-01 · 1.7 MB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-07 · 819 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-03-17 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-03-17 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-02-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2026-02-12 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-11 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-11 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2025-03-07 · 405 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 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-02-15 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-01-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-07-06 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-05-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-01-13 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-06 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-04-23 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-07-02 · 1000 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-02-18 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-01-20 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-07-10 · 999 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-04-23 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-02-14 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-07-06 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-03-28 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-07-05 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-03-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-03-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-08 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-08 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-06-17 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-04-01 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-02-26 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-02-10 · 403 KB
Submitted report pdf
Source file type Submitted Report PDF · 2015-12-18 · 403 KB
Submitted Report PDF
Source file type Submitted Report PDF · 2014-06-24 · 247 KB
2026_0217LabResults
Source file type Laboratory Results · part 1/1 · 2026-03-16 · 716 KB
2026_0224LabResults
Source file type Laboratory Results · part 1/1 · 2026-03-16 · 719 KB
2026_0105LabResults
Source file type Laboratory Results · part 1/1 · 2026-02-18 · 736 KB
2025_1229LabResults
Source file type Laboratory Results · part 1/1 · 2026-02-10 · 1.2 MB
Stormwater 03-12-25
Source file type Laboratory Results · 2025-07-11 · 766 KB
Stormwater 11-21-2024
Source file type Laboratory Results · 2025-03-07 · 327 KB
North State Stormwater Sampling 01-04-23
Source file type Laboratory Results · 2023-02-15 · 762 KB
North State Stormwater Sampling 12-30-22
Source file type Laboratory Results · 2023-01-18 · 758 KB
Sampling Results 4.14.22
Source file type Laboratory Results · 2022-05-18 · 699 KB
Sampling Results 12.13.21
Source file type Laboratory Results · part 1/1 · 2022-01-12 · 696 KB
North State Street 020221
Source file type Laboratory Results · 2021-04-23 · 692 KB
North State Street 01-16-20 Sample Results
Source file type Laboratory Results · 2020-02-18 · 670 KB
North State Street 12-13-19 Sample Results
Source file type Laboratory Results · part 1/1 · 2020-01-20 · 703 KB
04-05-19 Sample
Source file type Laboratory Results · part 1/1 · 2019-04-23 · 679 KB
01-11-19 Sample Results
Source file type Laboratory Results · part 1/1 · 2019-02-14 · 697 KB
Sample Results for 03-14-18
Source file type Laboratory Results · part 1/1 · 2018-03-28 · 523 KB
Stormwater Results for 01/19/17
Source file type Laboratory Results · part 1/1 · 2017-02-17 · 644 KB
Sampling from 01/09/17
Source file type Laboratory Results · part 1/1 · 2017-02-17 · 616 KB
Stormwater Sampling 01-19-17
Source file type Laboratory Results · part 1/1 · 2017-02-01 · 644 KB
Storm Water Sampling for 01/09/17
Source file type Laboratory Results · part 1/1 · 2017-01-24 · 616 KB
NSS_Sample Results_110915
Source file type Laboratory Results · part 1/1 · 2016-07-06 · 190 KB
NSS_Sample Results_042216
Source file type Laboratory Results · part 1/1 · 2016-05-19 · 640 KB
NSS Storm Water Sample Results
Source file type Laboratory Results · part 1/1 · 2016-04-01 · 646 KB
NSS Storm Water Sample Results
Source file type Laboratory Results · part 1/1 · 2016-02-26 · 650 KB
NSS_12.10.15_Sample Results
Source file type Laboratory Results · part 1/1 · 2016-02-10 · 646 KB
NSS Storm Water Sample Results 11.09.15
Source file type Laboratory Results · part 1/1 · 2015-12-18 · 193 KB
NSS_Sample Results_121114
Source file type Laboratory Results · part 1/1 · 2015-06-17 · 236 KB
NSS_Smaple Results_112014
Source file type Laboratory Results · part 1/1 · 2015-06-17 · 259 KB
North State Storm Water Sample Results 02.26.14
Source file type Laboratory Results · part 1/1 · 2014-06-18 · 509 KB
North State Storm Water Sample Results 02.07.14
Source file type Laboratory Results · part 1/1 · 2014-06-18 · 550 KB
North State Street Storm Water Sample Results 03.20.13
Source file type Laboratory Results · part 1/1 · 2013-06-27 · 1.8 MB
North State Street Storm Water Sample Results 10.31.12
Source file type Laboratory Results · part 1/1 · 2013-06-27 · 431 KB
Laboratory Results for Stormwater 11-21-2024
Source file type Supporting Documentation · 2025-03-07 · 759 KB
SWPPP Revision 11-16-21
Source file type Supporting Documentation · part 1/1 · 2021-11-16 · 84.0 MB
Granite Ukiah
Source file type Photograph · part 1/1 · 2017-03-30 · 3.7 MB
Granite Ukiah
Source file type Photograph · part 1/1 · 2017-03-30 · 2.8 MB
Granite Ukiah
Source file type Photograph · part 1/1 · 2017-03-30 · 3.1 MB
NSS_Sample Error Explanations
Source file type Cover/Explanation Letter · part 1/1 · 2015-06-24 · 47 KB
Granite Ukiah
Source file type Photograph · part 1/1 · 2015-03-12 · 2.7 MB
Granite Ukiah
Source file type Photograph · part 1/1 · 2015-03-12 · 2.9 MB
141001_PRK_ef_IGPThankYouNorth State Street Facility.pdf
Source file type Cover/Explanation Letter · part 1/1 · 2014-10-21 · 442 KB
North State Monthly Observations_02.26.14 Storm Event
Source file type Other · part 1/1 · 2014-06-18 · 32 KB
North State Water Sampling Analytical Methods
Source file type Other · part 1/1 · 2014-06-18 · 32 KB
Storm Water Annual Report Explanations
Source file type Cover/Explanation Letter · part 1/1 · 2013-06-27 · 22 KB
North State Street Storm Water Sampling Analytical Methods Utilized
Source file type Other · part 1/1 · 2013-06-27 · 39 KB
136654_AnnualReport_20080812101227.pdf
Source file type Binary Large Object · part 1/1 · 2008-08-12 · 236 KB
NSt.2.pdf
Source file type Binary Large Object · part 1/1 · 2008-06-17 · 1.1 MB
NSt.1.pdf
Source file type Binary Large Object · part 1/1 · 2008-06-17 · 885 KB
178444.pdf
Source file type Binary Large Object · part 1/1 · 2007-07-05 · 97 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