Armstrong Technology Inc
Active WDID 5S31NEC012858 Auburn, Placer County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- No Exposure Certification (NEC) · Permits and applications
- Location Evidence: facility-reported
- Auburn, Placer County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- Rock Creek Lake (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 131 distinct results, 7 reporting years (2015 to 2022)
- Most recent sample Feb 28, 2023 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 2 violation records · 3 enforcement actions
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 38.950511, -121.086988
- Precision
- 6 decimal places
- Shared point
- 2 permits report this exact point
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 12780 Earhart Avenue, Auburn 95602
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Orr Creek HUC12 180201610201
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- No Exposure Certification (NEC)
- Status
- Active
- Operator
- Armstrong Technology Inc
- Primary industry (SIC)
- 3599-Industrial and Commercial Machinery and Equipment, NEC
- Application ID
- 460912
- NOI processed
- Sep 09, 2015
- Last certified
- Sep 02, 2026
- Facility size
- 25000 SqFt
- Impervious area
- 90 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 460912 | Industrial | Active | Sep 09, 2015 | — | Sep 02, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Rock Creek Lake
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
1 official waterbody shares this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Rock Creek (Placer County) CAR5142201120090105143038 | 339 m | listed | 1 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
131 distinct measurements across 3 parameters, most recent sample Feb 28, 2023.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2022 | 24 | 3 | 0 | Sep 19, 2022 | Feb 28, 2023 |
| 2021 | 18 | 3 | 0 | Oct 22, 2021 | Mar 15, 2022 |
| 2020 | 12 | 3 | 0 | Dec 17, 2020 | Feb 02, 2021 |
| 2019 | 24 | 3 | 0 | Sep 16, 2019 | May 18, 2020 |
| 2018 | 12 | 3 | 0 | Nov 29, 2018 | Jan 15, 2019 |
| 2017 | 18 | 3 | 0 | Nov 09, 2017 | Mar 01, 2018 |
| 2015 | 23 | 3 | 0 | Nov 10, 2015 | Oct 14, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 44 | 34 | Nov 10, 2015 | Feb 28, 2023 | Results |
| pH | SU | 44 | 20 | Nov 10, 2015 | Feb 28, 2023 | Results |
| Total Suspended Solids (TSS) | mg/L | 43 | 31 | Nov 10, 2015 | Feb 28, 2023 | Results |
All results (131 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Dec 17, 2020 | pH | 6.59 | SU | Effluent | Qualifying Storm Event | A4500HB | 1138115 | |
| Dec 17, 2020 | pH | 6.68 | SU | Effluent | Qualifying Storm Event | A4500HB | 1138115 | |
| Dec 17, 2020 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1138115 | |
| Dec 17, 2020 | Total Suspended Solids (TSS) | DNQ 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1138115 | |
| May 18, 2020 | Oil and Grease | DNQ 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1108248 | |
| May 18, 2020 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 1108248 | |
| May 18, 2020 | pH | DNQ 7.15 | SU | Effluent | Qualifying Storm Event | A4500HB | 1108248 | |
| May 18, 2020 | pH | DNQ 6.95 | SU | Effluent | Qualifying Storm Event | A4500HB | 1108248 | |
| May 18, 2020 | Total Suspended Solids (TSS) | DNQ 2.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1108248 | |
| May 18, 2020 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1108248 | |
| Jan 16, 2020 | Oil and Grease | DNQ 6.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1098704 | |
| Jan 16, 2020 | Oil and Grease | DNQ 5.7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1098704 | |
| Jan 16, 2020 | pH | DNQ 6.3 | SU | Effluent | Qualifying Storm Event | A4500HB | 1098704 | |
| Jan 16, 2020 | pH | DNQ 6.66 | SU | Effluent | Qualifying Storm Event | A4500HB | 1098704 | |
| Jan 16, 2020 | Total Suspended Solids (TSS) | DNQ 49 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1098704 | |
| Jan 16, 2020 | Total Suspended Solids (TSS) | DNQ 130 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1098704 | |
| Dec 13, 2019 | Oil and Grease | DNQ 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1093834 | |
| Dec 13, 2019 | Oil and Grease | DNQ 3.6 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1093834 | |
| Dec 13, 2019 | pH | DNQ 7.08 | SU | Effluent | Qualifying Storm Event | A4500HB | 1093834 | |
| Dec 13, 2019 | pH | DNQ 7.15 | SU | Effluent | Qualifying Storm Event | A4500HB | 1093834 | |
| Dec 13, 2019 | Total Suspended Solids (TSS) | DNQ 4.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1093834 | |
| Dec 13, 2019 | Total Suspended Solids (TSS) | DNQ 68 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1093834 | |
| Sep 16, 2019 | Oil and Grease | DNQ 1.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1089815 | |
| Sep 16, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1089815 | |
| Sep 16, 2019 | pH | 6.29 | SU | Effluent | Qualifying Storm Event | A4500HB | 1089815 | |
| Sep 16, 2019 | pH | 6.29 | SU | Effluent | Qualifying Storm Event | A4500HB | 1089815 | |
| Sep 16, 2019 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1089815 | |
| Sep 16, 2019 | Total Suspended Solids (TSS) | DNQ 53 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1089815 | |
| Jan 15, 2019 | Oil and Grease | DNQ 14 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1034701 | |
| Jan 15, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 1034701 | |
| Jan 15, 2019 | pH | DNQ 6.86 | SU | Effluent | Qualifying Storm Event | A4500HB | 1034701 | |
| Jan 15, 2019 | pH | ND | SU | Effluent | Qualifying Storm Event | A4500HB | 1034701 | |
| Jan 15, 2019 | Total Suspended Solids (TSS) | DNQ 130 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1034701 | |
| Jan 15, 2019 | Total Suspended Solids (TSS) | DNQ 6.88 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1034701 | |
| Nov 29, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1028986 | |
| Nov 29, 2018 | Oil and Grease | DNQ 4.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1028986 | |
| Nov 29, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1028986 | |
| Nov 29, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1028986 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | DNQ 93 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1028986 | |
| Nov 29, 2018 | Total Suspended Solids (TSS) | DNQ 25 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1028986 | |
| Mar 01, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 994463 | |
| Mar 01, 2018 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 994463 | |
| Mar 01, 2018 | pH | ND | SU | Effluent | Qualifying Storm Event | pH_Paper | 994463 | |
| Mar 01, 2018 | pH | ND | SU | Effluent | Qualifying Storm Event | pH_Paper | 994463 | |
| Mar 01, 2018 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994463 | |
| Mar 01, 2018 | Total Suspended Solids (TSS) | 3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 994463 | |
| Jan 08, 2018 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 989626 | |
| Jan 08, 2018 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 989626 | |
| Jan 08, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 989626 | |
| Jan 08, 2018 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 989626 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 2 | 2 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 15, 2016 – Jul 16, 2024 | Oct 21, 2026 | All violations |
| Enforcement actions | 3 | 3 issued · 0 draft · 0 withdrawn, rescinded or superseded | Sep 12, 2016 – Sep 09, 2024 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Jan 07, 2016 – Oct 16, 2023 | Oct 21, 2026 | All inspections |
| Annual reports | 8 | certified reports (contents not shown) | 2015 – 2022 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Sep 09, 2024 | Enforcement actions | 454393 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Active | |
| Jul 16, 2024 | Violations | 890022 | Late Report | Violation | Report |
| Oct 16, 2023 | Inspections | 2062148 | B Type compliance | Performed | Additional Info Required |
| Jul 03, 2023 | Annual reports | 1193000 | Annual report 2022 | — | |
| Jun 30, 2022 | Annual reports | 1116771 | Annual report 2021 | — | |
| Jul 09, 2021 | Annual reports | 1064954 | Annual report 2020 | — | |
| Jul 01, 2020 | Annual reports | 982006 | Annual report 2019 | — | |
| Aug 28, 2019 | Annual reports | 958335 | Annual report 2018 | — | |
| Jun 06, 2018 | Annual reports | 943779 | Annual report 2017 | — | |
| Jun 23, 2017 | Annual reports | 883303 | Annual report 2016 | — | |
| Nov 15, 2016 | Annual reports | 854517 | Annual report 2015 | — | |
| Oct 28, 2016 | Enforcement actions | 424997 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Sep 12, 2016 | Enforcement actions | 423989 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 15, 2016 | Violations | 861061 | Late Report | Violation | Report |
| Jan 07, 2016 | Inspections | 2028399 | B Type compliance | — | Additional Info Required |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.