Benchmark
Active WDID 2 07I027230 Concord, Contra Costa County Region 2 · San Francisco Bay
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Concord, Contra Costa County
- Region 2 · San Francisco Bay · 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
- 1 waterbody; 1 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 195 distinct results, 8 reporting years (2017 to 2025)
- Most recent sample May 28, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 0 violation records · 0 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
- 38.01071, -122.03183
- 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
- 4041 Pike Lane, Concord 94520
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- Mount Diablo Creek-Frontal Suisun Bay Estuaries HUC12 180500010302
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
- Benchmark Electronics
- Primary industry (SIC)
- 3599-Industrial and Commercial Machinery and Equipment, NEC
- Application ID
- 471412
- NOI processed
- Jul 05, 2017
- Last certified
- Dec 06, 2024
- Facility size
- 4 Acres
- Impervious area
- 98 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 471412 | Industrial | Active | Jul 05, 2017 | — | Dec 06, 2024 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Mount Diablo Creek
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
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 |
|---|---|---|---|
| Mt. Diablo Creek CAR2073104019990217163214 | 915 m | listed | 3 |
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.
195 distinct measurements across 3 parameters, most recent sample May 28, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 24 | 3 | 0 | Nov 13, 2025 | May 28, 2026 |
| 2024 | 18 | 3 | 0 | Dec 16, 2024 | Jan 31, 2025 |
| 2023 | 39 | 3 | 0 | Dec 20, 2023 | Apr 04, 2024 |
| 2022 | 45 | 3 | 0 | Nov 01, 2022 | Mar 09, 2023 |
| 2021 | 27 | 3 | 0 | Nov 08, 2021 | Apr 21, 2022 |
| 2019 | 15 | 3 | 0 | Dec 18, 2019 | Jan 09, 2020 |
| 2018 | 9 | 3 | 0 | Jan 14, 2019 | Jan 14, 2019 |
| 2017 | 18 | 3 | 0 | Mar 02, 2018 | Apr 06, 2018 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 65 | 42 | Mar 02, 2018 | May 28, 2026 | Results |
| pH | SU | 65 | 0 | Mar 02, 2018 | May 28, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 65 | 2 | Mar 02, 2018 | May 28, 2026 | Results |
All results (195 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| May 28, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1374844 | |
| May 28, 2026 | pH | 5.88 | SU | Effluent | Qualifying Storm Event | pH_Field | 1374844 | |
| May 28, 2026 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1374844 | |
| Apr 10, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372500 | |
| Apr 10, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1372500 | |
| Apr 10, 2026 | pH | 6.38 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372500 | |
| Apr 10, 2026 | pH | 6.34 | SU | Effluent | Qualifying Storm Event | pH_Field | 1372500 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 16.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372500 | |
| Apr 10, 2026 | Total Suspended Solids (TSS) | 13.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1372500 | |
| Nov 13, 2025 | Oil and Grease | 4.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358722 | |
| Nov 13, 2025 | Oil and Grease | 3.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358722 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358722 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358722 | |
| Nov 13, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358722 | |
| Nov 13, 2025 | pH | 6.95 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358722 | |
| Nov 13, 2025 | pH | 6.46 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358722 | |
| Nov 13, 2025 | pH | 7.56 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358722 | |
| Nov 13, 2025 | pH | 7.65 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358722 | |
| Nov 13, 2025 | pH | 7.74 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358722 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 140 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358722 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358722 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358722 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 4.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358722 | |
| Nov 13, 2025 | Total Suspended Solids (TSS) | 5.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358722 | |
| Jan 31, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322072 | |
| Jan 31, 2025 | Oil and Grease | 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322072 | |
| Jan 31, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1322072 | |
| Jan 31, 2025 | pH | 7.37 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322072 | |
| Jan 31, 2025 | pH | 7.37 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322072 | |
| Jan 31, 2025 | pH | 7.58 | SU | Effluent | Qualifying Storm Event | pH_Field | 1322072 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 15.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322072 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 2.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322072 | |
| Jan 31, 2025 | Total Suspended Solids (TSS) | 14.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1322072 | |
| Dec 16, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319728 | |
| Dec 16, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319728 | |
| Dec 16, 2024 | Oil and Grease | 2.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319728 | |
| Dec 16, 2024 | pH | 7.45 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319728 | |
| Dec 16, 2024 | pH | 6.44 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319728 | |
| Dec 16, 2024 | pH | 7.29 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319728 | |
| Dec 16, 2024 | Total Suspended Solids (TSS) | 10 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319728 | |
| Dec 16, 2024 | Total Suspended Solids (TSS) | 2.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319728 | |
| Dec 16, 2024 | Total Suspended Solids (TSS) | 127 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319728 | |
| Apr 04, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287128 | |
| Apr 04, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1287128 | |
| Apr 04, 2024 | pH | 7.46 | SU | Effluent | Qualifying Storm Event | pH_Field | 1287128 | |
| Apr 04, 2024 | pH | 7.11 | SU | Effluent | Qualifying Storm Event | pH_Field | 1287128 | |
| Apr 04, 2024 | Total Suspended Solids (TSS) | 12.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287128 | |
| Apr 04, 2024 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1287128 | |
| Feb 07, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1283221 | |
| Feb 07, 2024 | Oil and Grease | DNQ 3.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1283221 |
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 | 0 | 0 Violation · 0 Potential (preliminary) · 0 Dismissed | — | Oct 21, 2026 | |
| Enforcement actions | 0 | 0 issued · 0 draft · 0 withdrawn, rescinded or superseded | — | Oct 21, 2026 | |
| Inspections | 1 | inspections, not findings | Feb 27, 2020 – Feb 27, 2020 | Oct 21, 2026 | All inspections |
| Annual reports | 9 | certified reports (contents not shown) | 2017 – 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 (10 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 14, 2026 | Annual reports | 1338718 | Annual report 2025 | — | |
| Jul 10, 2025 | Annual reports | 1297730 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1246981 | Annual report 2023 | — | |
| Jul 13, 2023 | Annual reports | 1193160 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1116944 | Annual report 2021 | — | |
| Jun 22, 2021 | Annual reports | 1065139 | Annual report 2020 | — | |
| Jun 26, 2020 | Annual reports | 982208 | Annual report 2019 | — | |
| Feb 27, 2020 | Inspections | 2046517 | B Type compliance | — | Additional Info Required |
| Jun 28, 2019 | Annual reports | 958542 | Annual report 2018 | — | |
| Jun 14, 2018 | Annual reports | 946727 | Annual report 2017 | — |
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.