Mallard Creek Inc
Active WDID 5S31I012876 Rocklin, Placer County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Rocklin, Placer County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- Pleasant Grove Creek (as reported by the facility)
- Evidence: identification corroborated Pleasant Grove Creek Details
- Identified receiving water on the 2026 303(d) list
- Yes · 8 Appendix A decisions, category 5 Evidence: State-published
- Describes the waterbody, not this facility · Waterbody profile
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 153 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 24, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 4 inspections · 6 violation records · 7 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
- 38.809645, -121.318042
- Precision
- 6 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 4095 Duluth Ave, Rocklin 95765
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Pleasant Grove Creek HUC12 180201610302
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
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- Mallard Creek Inc
- Primary industry (SIC)
- 3999-Manufacturing Industries, NEC
- Application ID
- 199229
- NOI processed
- Jan 31, 1997
- Last certified
- Jun 09, 2015
- Facility size
- 10 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 199229 | Industrial | Active | Jan 31, 1997 | — | Jun 09, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Pleasant Grove Creek
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: identification corroborated Pleasant Grove Creek CAR5192200020070510150258
Receiving water reported by facility — waterbody identification corroborated by geographic evidence.
Nearest distance from the reported facility location: 525 m. Method receiving_water/2.
2026 Integrated Report status Evidence: State-published
Pleasant Grove Creek is on the 2026 Clean Water Act section 303(d) list (8 Appendix A decisions; category 5).
| Pollutant | Category | Listing decision | TMDL requirement | Decision ID |
|---|---|---|---|---|
| Bifenthrin | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs | 146426 |
| Cyfluthrin | 5 | List on 303(d) list (being addressed by USEPA approved TMDL) | 5B · Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs | 146434 |
| Cypermethrin | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs | 170948 |
| Fipronil | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 146418 |
| Imidacloprid | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 146421 |
| Oxygen, Dissolved | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 146410 |
| Pyrethroids | 5 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | 5B · Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs | 146417 |
| Toxicity | 5 | Do Not Delist from 303(d) list (TMDL required list) | 5A | 146415 |
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. State Board adoption 2026-02-03; USEPA approval not confirmed. A listing describes the waterbody, not this facility. Waterbody profile.
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 |
|---|---|---|---|
| Pleasant Grove Creek CAR5192200020070510150258 | 525 m | listed | 8 |
| Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) CAR5192200020120323141359 | 747 m | listed | 7 |
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.
153 distinct measurements across 4 parameters, most recent sample Feb 24, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 4 | 0 | Oct 14, 2025 | Feb 24, 2026 |
| 2024 | 16 | 4 | 0 | Nov 20, 2024 | Feb 01, 2025 |
| 2023 | 16 | 4 | 0 | Nov 06, 2023 | Jan 13, 2024 |
| 2022 | 16 | 4 | 0 | Dec 01, 2022 | Jan 19, 2023 |
| 2021 | 12 | 4 | 0 | Oct 21, 2021 | Apr 21, 2022 |
| 2020 | 14 | 4 | 0 | Nov 17, 2020 | Feb 02, 2021 |
| 2019 | 15 | 3 | 0 | Dec 18, 2019 | Jan 17, 2020 |
| 2018 | 6 | 3 | 0 | Jan 05, 2019 | Jan 20, 2019 |
| 2017 | 6 | 3 | 0 | Nov 04, 2017 | Mar 13, 2018 |
| 2016 | 12 | 3 | 0 | Oct 15, 2016 | Dec 15, 2016 |
| 2015 | 24 | 3 | 0 | Nov 15, 2015 | Mar 10, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 44 | 9 | Nov 15, 2015 | Feb 24, 2026 | Results |
| pH | SU | 44 | 0 | Nov 15, 2015 | Feb 24, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 44 | 1 | Nov 15, 2015 | Feb 24, 2026 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 21 | 1 | Jan 22, 2021 | Feb 24, 2026 | Results |
All results (153 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 24, 2026 | Chemical Oxygen Demand (COD) | ND | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1368021 | |
| Feb 24, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1368021 | |
| Feb 24, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1368021 | |
| Feb 24, 2026 | Total Suspended Solids (TSS) | 14 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368021 | |
| Feb 16, 2026 | Chemical Oxygen Demand (COD) | 17 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1368015 | |
| Feb 16, 2026 | Oil and Grease | .67 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1368015 | |
| Feb 16, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1368015 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 3.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368015 | |
| Nov 07, 2025 | Chemical Oxygen Demand (COD) | 250 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1358871 | |
| Nov 07, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1358871 | |
| Nov 07, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358871 | |
| Nov 07, 2025 | Total Suspended Solids (TSS) | 29 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358871 | |
| Oct 14, 2025 | Chemical Oxygen Demand (COD) | 49 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1355689 | |
| Oct 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1355689 | |
| Oct 14, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1355689 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 7.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1355689 | |
| Feb 01, 2025 | Chemical Oxygen Demand (COD) | 44 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1321370 | |
| Feb 01, 2025 | Oil and Grease | .7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1321370 | |
| Feb 01, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1321370 | |
| Feb 01, 2025 | Total Suspended Solids (TSS) | 24 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1321370 | |
| Jan 03, 2025 | Chemical Oxygen Demand (COD) | 44 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1319229 | |
| Jan 03, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1319229 | |
| Jan 03, 2025 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319229 | |
| Jan 03, 2025 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319229 | |
| Dec 12, 2024 | Chemical Oxygen Demand (COD) | 80 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1317094 | |
| Dec 12, 2024 | Oil and Grease | 13 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1317094 | |
| Dec 12, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317094 | |
| Dec 12, 2024 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317094 | |
| Nov 20, 2024 | Chemical Oxygen Demand (COD) | 54 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1315977 | |
| Nov 20, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1315977 | |
| Nov 20, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1315977 | |
| Nov 20, 2024 | Total Suspended Solids (TSS) | 5.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1315977 | |
| Jan 13, 2024 | Chemical Oxygen Demand (COD) | 41 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1273758 | |
| Jan 13, 2024 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1273758 | |
| Jan 13, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1273758 | |
| Jan 13, 2024 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1273758 | |
| Jan 02, 2024 | Chemical Oxygen Demand (COD) | 43 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1273758 | |
| Jan 02, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1273758 | |
| Jan 02, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1273758 | |
| Jan 02, 2024 | Total Suspended Solids (TSS) | 23 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1273758 | |
| Nov 18, 2023 | Chemical Oxygen Demand (COD) | 81 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1268452 | |
| Nov 18, 2023 | Oil and Grease | .7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1268452 | |
| Nov 18, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1268452 | |
| Nov 18, 2023 | Total Suspended Solids (TSS) | 7.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1268452 | |
| Nov 06, 2023 | Chemical Oxygen Demand (COD) | 73 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1268452 | |
| Nov 06, 2023 | Oil and Grease | .8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1268452 | |
| Nov 06, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1268452 | |
| Nov 06, 2023 | Total Suspended Solids (TSS) | 10 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1268452 | |
| Jan 19, 2023 | Chemical Oxygen Demand (COD) | 39 | mg/L | Effluent | Qualifying Storm Event | E410.4 | 1223266 | |
| Jan 19, 2023 | Oil and Grease | .7 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1223266 |
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 | 6 | 6 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 02, 2008 – Jul 01, 2014 | Oct 21, 2026 | All violations |
| Enforcement actions | 7 | 7 issued · 0 draft · 0 withdrawn, rescinded or superseded | Aug 01, 2008 – Aug 15, 2014 | Oct 21, 2026 | All actions |
| Inspections | 4 | inspections, not findings | Sep 13, 2013 – Dec 02, 2020 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | 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 (28 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 08, 2026 | Annual reports | 1334618 | Annual report 2025 | — | |
| Jul 01, 2025 | Annual reports | 1293408 | Annual report 2024 | — | |
| Jun 28, 2024 | Annual reports | 1242437 | Annual report 2023 | — | |
| Jul 05, 2023 | Annual reports | 1188398 | Annual report 2022 | — | |
| Jul 11, 2022 | Annual reports | 1111698 | Annual report 2021 | — | |
| Jul 02, 2021 | Annual reports | 1067663 | Annual report 2020 | — | |
| Dec 02, 2020 | Inspections | 2049782 | Complaint | Performed | No Further Action |
| Dec 02, 2020 | Inspections | 2049832 | B Type compliance | Performed | Additional Info Required |
| Jul 15, 2020 | Annual reports | 984852 | Annual report 2019 | — | |
| Jul 01, 2019 | Annual reports | 952367 | Annual report 2018 | — | |
| Jul 10, 2018 | Annual reports | 937780 | Annual report 2017 | — | |
| Jun 30, 2017 | Annual reports | 876963 | Annual report 2016 | — | |
| Jul 07, 2016 | Annual reports | 847799 | Annual report 2015 | — | |
| Oct 09, 2014 | Inspections | 2023911 | B Type compliance | — | No Further Action |
| Aug 15, 2014 | Enforcement actions | 416695 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 01, 2014 | Violations | 855036 | Late Report | Violation | Report |
| Sep 13, 2013 | Inspections | 2019966 | B Type compliance | — | Follow-up Inspection Needed |
| Aug 16, 2013 | Enforcement actions | 413202 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 02, 2013 | Violations | 851806 | Late Report | Violation | Report |
| Apr 13, 2012 | Enforcement actions | 408588 | 13267 Letter/Order (Water Code section 13267 letter or order) | Historical | |
| Jul 13, 2011 | Violations | 847779 | Deficient BMP Implementation | Violation | Report |
| Aug 19, 2010 | Enforcement actions | 402433 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical | |
| Jul 02, 2010 | Violations | 842302 | Late Report | Violation | Report |
| Sep 03, 2009 | Enforcement actions | 400878 | 2nd NNC - AR (Second Notice of Non-Compliance (annual report)) | Historical | |
| Jul 23, 2009 | Enforcement actions | 400480 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Historical |
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.