Dillard Trucking Inc Environme
Active WDID 5S07I016207 Byron, Contra Costa 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
- Byron, Contra Costa County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- 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
- None
- Monitoring results Evidence: facility-reported
- 111 distinct results, 10 reporting years (2016 to 2025)
- Most recent sample Apr 10, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 4 violation records · 5 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
- 37.86748, -121.63902
- Precision
- 5 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
- 3120 Camino Diablo P O Box 423, Byron 94514
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- Lower Kellogg Creek HUC12 180400030802
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
- Dillard Trucking Inc
- Primary industry (SIC)
- 4214-Local Trucking with Storage
- Application ID
- 198174
- NOI processed
- Nov 08, 2000
- Last certified
- Mar 18, 2015
- Facility size
- 2 Acres
- Impervious area
- 90 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 198174 | Industrial | Active | Nov 08, 2000 | — | Mar 18, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Delta
- 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
2 official waterbodies share 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.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
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.
111 distinct measurements across 3 parameters, most recent sample Apr 10, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 12 | 3 | 0 | Oct 02, 2025 | Apr 10, 2026 |
| 2024 | 12 | 3 | 0 | Nov 11, 2024 | Mar 12, 2025 |
| 2023 | 9 | 3 | 0 | Dec 18, 2023 | Apr 04, 2024 |
| 2022 | 12 | 3 | 0 | Sep 19, 2022 | Apr 07, 2023 |
| 2021 | 12 | 3 | 0 | Oct 22, 2021 | Apr 14, 2022 |
| 2020 | 6 | 3 | 0 | Jan 04, 2021 | Mar 10, 2021 |
| 2019 | 12 | 3 | 0 | Sep 16, 2019 | Apr 06, 2020 |
| 2018 | 12 | 3 | 0 | Oct 03, 2018 | Apr 02, 2019 |
| 2017 | 12 | 3 | 0 | Nov 16, 2017 | Mar 13, 2018 |
| 2016 | 12 | 3 | 0 | Oct 14, 2016 | Apr 06, 2017 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 37 | 13 | Oct 14, 2016 | Apr 10, 2026 | Results |
| pH | SU | 37 | 0 | Oct 14, 2016 | Apr 10, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 37 | 0 | Oct 14, 2016 | Apr 10, 2026 | Results |
All results (111 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Apr 10, 2026 | Oil and Grease | 2.8 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1373255 | |
| Apr 10, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1373255 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 9.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1373255 | |
| Feb 10, 2026 | Oil and Grease | 11.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1369890 | |
| Feb 10, 2026 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1369890 | |
| Feb 10, 2026 | Total Suspended Solids (TSS) | 107 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1369890 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359490 | |
| Nov 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359490 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 62 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359490 | |
| Oct 02, 2025 | Oil and Grease | 3.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1359481 | |
| Oct 02, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1359481 | |
| Oct 02, 2025 | Total Suspended Solids (TSS) | 53 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1359481 | |
| Mar 12, 2025 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1326476 | |
| Mar 12, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1326476 | |
| Mar 12, 2025 | Total Suspended Solids (TSS) | 116 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1326476 | |
| Feb 13, 2025 | Oil and Grease | 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1323659 | |
| Feb 13, 2025 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1323659 | |
| Feb 13, 2025 | Total Suspended Solids (TSS) | 57.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1323659 | |
| Dec 27, 2024 | Oil and Grease | 11.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319038 | |
| Dec 27, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1319038 | |
| Dec 27, 2024 | Total Suspended Solids (TSS) | 77 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319038 | |
| Nov 11, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317089 | |
| Nov 11, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1317089 | |
| Nov 11, 2024 | Total Suspended Solids (TSS) | 75.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317089 | |
| Apr 04, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1285336 | |
| Apr 04, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1285336 | |
| Apr 04, 2024 | Total Suspended Solids (TSS) | 32.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1285336 | |
| Mar 11, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1283839 | |
| Mar 11, 2024 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1283839 | |
| Mar 11, 2024 | Total Suspended Solids (TSS) | 58.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1283839 | |
| Dec 18, 2023 | Oil and Grease | 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1271280 | |
| Dec 18, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1271280 | |
| Dec 18, 2023 | Total Suspended Solids (TSS) | 90 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1271280 | |
| Apr 07, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1237988 | |
| Apr 07, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1237988 | |
| Apr 07, 2023 | Total Suspended Solids (TSS) | 7.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1237988 | |
| Feb 24, 2023 | Oil and Grease | 1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1230448 | |
| Feb 24, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1230448 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 17 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1230448 | |
| Nov 01, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1216410 | |
| Nov 01, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1216410 | |
| Nov 01, 2022 | Total Suspended Solids (TSS) | 34 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1216410 | |
| Sep 19, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1216408 | |
| Sep 19, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1216408 | |
| Sep 19, 2022 | Total Suspended Solids (TSS) | 205 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1216408 | |
| Apr 14, 2022 | Oil and Grease | 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1182458 | |
| Apr 14, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1182458 | |
| Apr 14, 2022 | Total Suspended Solids (TSS) | 10 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1182458 | |
| Mar 15, 2022 | Oil and Grease | 4.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1179727 | |
| Mar 15, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1179727 |
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 | 4 | 4 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 2003 – Jul 15, 2018 | Oct 21, 2026 | All violations |
| Enforcement actions | 5 | 4 issued · 0 draft · 1 withdrawn, rescinded or superseded | Aug 12, 2003 – Aug 16, 2018 | Oct 21, 2026 | All actions |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| 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 (20 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| May 15, 2026 | Annual reports | 1337301 | Annual report 2025 | — | |
| May 30, 2025 | Annual reports | 1296207 | Annual report 2024 | — | |
| Jun 28, 2024 | Annual reports | 1245404 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1191511 | Annual report 2022 | — | |
| Jul 08, 2022 | Annual reports | 1115082 | Annual report 2021 | — | |
| Jul 09, 2021 | Annual reports | 1063174 | Annual report 2020 | — | |
| Jun 26, 2020 | Annual reports | 980047 | Annual report 2019 | — | |
| Apr 16, 2019 | Annual reports | 956300 | Annual report 2018 | — | |
| Aug 23, 2018 | Annual reports | 941727 | Annual report 2017 | — | |
| Aug 16, 2018 | Enforcement actions | 430670 | 1st NNC - AR (First Notice of Non-Compliance (annual report)) | Active | |
| Jul 15, 2018 | Violations | 867926 | Late Report | Violation | Report |
| Jun 28, 2017 | Annual reports | 881127 | Annual report 2016 | — | |
| Jun 29, 2016 | Annual reports | 841829 | Annual report 2015 | — | |
| Oct 23, 2009 | Enforcement actions | 401196 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 01, 2009 | Violations | 841021 | Deficient BMP Implementation | Violation | Report |
| Aug 19, 2004 | Enforcement actions | 253574 | NNC (Notice of Non-Compliance) | Historical | UNKNOWN |
| Jul 01, 2004 | Violations | 267048 | Deficient Report | Violation | Inspection |
| Oct 10, 2003 | Enforcement actions | 251468 | NNC (Notice of Non-Compliance) | Historical | UNKNOWN |
| Aug 12, 2003 | Enforcement actions | 251467 | NNC (Notice of Non-Compliance) | Withdrawn | UNKNOWN |
| Jul 01, 2003 | Violations | 246614 | Deficient Report | Violation | Inspection |
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.