Industrial stormwater facility
WDID 1 12I017241 · Notice of Intent · Arcata, Humboldt
SIC 3273 · Ready-Mixed Concrete · 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 |
|---|---|---|---|---|---|
| 2020-04-04 | B2W | Chemical oxygen demand (COD) | 7.4 | mg/L | Qualifying Storm Event |
| 2020-04-04 | B2W | Iron | 7.1 | mg/L | Qualifying Storm Event |
| 2020-04-04 | B2W | Nitrate | DNQ .098(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-04-04 | B2W | Nitrogen, Nitrite | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-04-04 | B2W | Oil and Grease | 5.1 | mg/L | Qualifying Storm Event |
| 2020-04-04 | B2W | pH | 7.5 | SU | Qualifying Storm Event |
| 2020-04-04 | B2W | Total Suspended Solids (TSS) | 23 | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | Chemical oxygen demand (COD) | 37 | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | Iron | 8.2 | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | Nitrate | .71 | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | Nitrogen, Nitrite | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-03-14 | B2W | pH | 7.2 | SU | Qualifying Storm Event |
| 2020-03-14 | B2W | Total Suspended Solids (TSS) | 60 | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | Chemical oxygen demand (COD) | 16 | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | Iron | 10 | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | Nitrate | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | Nitrogen, Nitrite | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | Oil and Grease | ND —(non-detect / est.) | mg/L | Qualifying Storm Event |
| 2020-01-08 | B2W | pH | 7.9 | SU | Qualifying Storm Event |
| 2020-01-08 | B2W | Total Suspended Solids (TSS) | 29 | mg/L | Qualifying Storm Event |
| 2019-12-19 | B2W | Chemical oxygen demand (COD) | 23 | mg/L | Qualifying Storm Event |
| 2019-12-19 | B2W | Iron | 9.1 | mg/L | Qualifying Storm Event |
| 2019-12-19 | B2W | Nitrate | .16 | mg/L | Qualifying Storm Event |
| 2019-12-19 | B2W | Nitrogen, Nitrite | 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 |
|---|---|---|---|---|---|---|
Chemical Oxygen Demand (COD) cod | Annual | 20.85 mg/L | 120 mg/L | At or below NALAnnual average of 4 eligible result(s) compared with the annual NAL.0.17× threshold | 4 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 | 8.6 mg/L | 1 mg/L | Above NALAnnual average of 4 eligible result(s) compared with the annual NAL.8.6× threshold | 4 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. | 3 eligible1 excluded1 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 | —0 samples above | 400 mg/L | At or below NALNo 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 |
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.
102 substantive of 150 indexed attachments
20260623-SWPPP-Amendment6
Source file type SWPPP · 2026-06-24 · 4.1 MB
SWPPP_Fig2_SiteMap_20260618
Source file type Facility/Site Map · 2026-06-23 · 3.7 MB
20260623-SWPPP-Amendment6
Source file type SWPPP · 2026-06-23 · 4.1 MB
20211005-SWPPP-Amend-3
Source file type SWPPP · 2022-08-31 · 8.4 MB
SWPA2_Fig2_SiteMap_20211013
Source file type Facility/Site Map · 2021-10-14 · 1.5 MB
SWPPP Amend. 2 Revision 1
Source file type SWPPP · part 1/1 · 2020-10-22 · 7.3 MB
SWPPP Amend. 2 Revision 1
Source file type SWPPP · part 1/1 · 2020-10-20 · 7.3 MB
Boyd Road SWPPP
Source file type SWPPP · part 1/1 · 2015-08-24 · 787 KB
4945 Boyd Road Site Map 6-26-2015
Source file type Facility/Site Map · part 1/1 · 2015-06-26 · 3.2 MB
Submitted report pdf
Source file type Submitted Report PDF · 2026-07-14 · 1.0 MB
Submitted report pdf
Source file type Submitted Report PDF · 2025-07-02 · 1003 KB
Submitted report pdf
Source file type Submitted Report PDF · 2024-07-11 · 1003 KB
Submitted report pdf
Source file type Submitted Report PDF · 2023-07-17 · 1003 KB
Submitted report pdf
Source file type Submitted Report PDF · 2022-07-08 · 1004 KB
Submitted report pdf
Source file type Submitted Report PDF · 2021-07-14 · 1004 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-07-14 · 1003 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-06-09 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-06-09 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-06-09 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-03-31 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-03-31 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2020-03-31 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-05-15 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-05-15 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-02-15 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-02-15 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-01-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-01-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2019-01-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-07-11 · 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 · 2018-03-23 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-01-29 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2018-01-29 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-06-23 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-05-31 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-05-31 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-05-30 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-03-22 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2017-03-03 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-06 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-06 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-06 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-06 · 911 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-07-01 · 405 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-06-27 · 406 KB
Submitted report pdf
Source file type Submitted Report PDF · 2016-04-14 · 405 KB
ERA Level 2Update 1 Fe
Source file type Level 2 Technical Report · part 1/1 · 2020-10-20 · 3.6 MB
Level 2 Exceedance Response Action (ERA) Technical Report-Nitrate+Nitrite Nitrogen
Source file type Level 2 Technical Report · part 1/1 · 2020-04-16 · 4.1 MB
20200313-Level2ERA-TSS
Source file type Level 2 ERA Action Plan · part 1/1 · 2020-03-30 · 4.1 MB
Exceedance Response Action Level 2 Technical Report - Iron
Source file type Level 2 Technical Report · part 1/1 · 2019-07-11 · 3.7 MB
20181231-ERALevel2Fe
Source file type Level 2 ERA Action Plan · part 1/1 · 2018-12-31 · 2.6 MB
20181228_-Level2ExtLtr
Source file type Level 2 Technical Report · part 1/1 · 2018-12-31 · 55 KB
20181228-ERA-Level2NN
Source file type Level 2 ERA Action Plan · part 1/1 · 2018-12-31 · 3.0 MB
20181228-ERA-Level1TSS-Rpt
Source file type Level 1 Technical Report · part 1/1 · 2018-12-28 · 2.6 MB
Exceedance Response Action Level 1 Action Plan Nitrate + Nitrite Nitrogen
Source file type Level 1 Technical Report · part 1/1 · 2018-01-09 · 3.7 MB
20171229 ERM Level 2 ERA
Source file type Level 2 ERA Action Plan · part 1/1 · 2017-12-29 · 3.2 MB
Level 1 ERA Technical Report
Source file type Level 1 Technical Report · part 1/1 · 2017-01-11 · 1.1 MB
2026_03_03_ERM Inspection Report
Source file type Final Inspection Report · part 1/1 · 2026-04-20 · 7.1 MB
Apr 4, 2020 lab rpt
Source file type Laboratory Results · 2020-04-30 · 277 KB
Mar 14, 2020 lab rpt
Source file type Laboratory Results · 2020-04-02 · 286 KB
Jan 8, 2020 lab rpt
Source file type Laboratory Results · 2020-01-28 · 362 KB
Dec 19, 2019 lab rpt
Source file type Laboratory Results · 2020-01-24 · 272 KB
04/05/2019 Lab Results
Source file type Laboratory Results · part 1/1 · 2019-05-15 · 405 KB
03/27/2019 Lab Results
Source file type Laboratory Results · part 1/1 · 2019-05-15 · 429 KB
December 24, 2018 Sampling Results
Source file type Laboratory Results · part 1/1 · 2019-02-15 · 346 KB
December 14, 2018 Lab Results
Source file type Laboratory Results · part 1/1 · 2019-02-15 · 351 KB
April 05, 2018 Sample Results
Source file type Laboratory Results · part 1/1 · 2018-05-01 · 320 KB
February 22, 2018 Lab Results
Source file type Laboratory Results · part 1/1 · 2018-03-23 · 328 KB
January 18, 2018 Lab Results
Source file type Laboratory Results · part 1/1 · 2018-01-29 · 320 KB
December 20,2017 Results
Source file type Laboratory Results · part 1/1 · 2018-01-29 · 317 KB
12-14-2016 Lab Analysis
Source file type Laboratory Results · part 1/1 · 2017-05-31 · 359 KB
11-15-2016 lab analysis
Source file type Laboratory Results · part 1/1 · 2017-05-31 · 296 KB
April 07, 2017 Sample Results
Source file type Laboratory Results · part 1/1 · 2017-05-30 · 308 KB
Feb. 03, 2017 Lab Results
Source file type Laboratory Results · part 1/1 · 2017-03-22 · 310 KB
12/14/2016 Analytical Results
Source file type Laboratory Results · part 1/1 · 2016-12-28 · 359 KB
11/15/2016 Analytical Report
Source file type Laboratory Results · part 1/1 · 2016-12-28 · 296 KB
March 01, 2016 Lab Results
Source file type Laboratory Results · part 1/1 · 2016-07-06 · 291 KB
December 18, 2015 Lab Results
Source file type Laboratory Results · part 1/1 · 2016-07-06 · 293 KB
December 3, 2015 Lab Results
Source file type Laboratory Results · part 1/1 · 2016-07-06 · 305 KB
April 14 sampling Results
Source file type Laboratory Results · part 1/1 · 2016-06-27 · 323 KB
March 2016 Results
Source file type Laboratory Results · part 1/1 · 2016-04-14 · 291 KB
12/18/2015 ANALYTICAL REPORT
Source file type Laboratory Results · part 1/1 · 2016-02-18 · 293 KB
12/3/2015 ANALYTICAL REPORT
Source file type Laboratory Results · part 1/1 · 2015-12-30 · 305 KB
20230123-SWPPP-Amendment-5
Source file type Cover/Explanation Letter · 2023-02-08 · 1.4 MB
20220728-SWPPP-Amendment4
Source file type Cover/Explanation Letter · 2022-08-31 · 310 KB
Discharger request for remanding level 2 ERA
Source file type E-mail Correspondence · 2020-08-03 · 869 KB
Exceedance Letter
Source file type Cover/Explanation Letter · 2019-12-05 · 737 KB
Corrective action
Source file type Photograph · 2019-08-29 · 1.6 MB
Inspection report
Source file type Photograph · 2019-08-29 · 7.1 MB
20181228_-Level2ExtLtr
Source file type Cover/Explanation Letter · part 1/1 · 2018-12-31 · 55 KB
SWPPP Amendment #3
Source file type Supporting Documentation · part 1/1 · 2016-12-29 · 4.3 MB
Eureka Readi Mix Boyd Rd
Source file type Photograph · part 1/1 · 2015-12-07 · 1.8 MB
Eureka Readi Mix Boyd Rd
Source file type Photograph · part 1/1 · 2015-12-07 · 3.3 MB
141017_DCJ_ef_IGP_Exceedance_EurekaReadyMixArcata.pdf
Source file type Cover/Explanation Letter · part 1/1 · 2014-10-28 · 310 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 409 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 361 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 434 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 556 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 539 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 876 KB
Eureka Readi Mix Eureka Site
Source file type Photograph · part 1/1 · 2013-10-14 · 1017 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