TREFETHEN VINEYARDS WINERY INC.
1160 OAK KNOLL AVE., NAPA, CA 94558
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Jan 11, 2001#125620864Jan 11, 2001Planned (H) · Complete scope, Safety#125620864$8754 viol.4 violations$875 in penalties
Inspection #125620864
Dates
- Opened
- Jan 11, 2001
- Closing Conference Date
- Jan 11, 2001
- Closed
- Mar 6, 2001
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 49
Violations and Penalties
- Total Violations
- 4
- Violation Types
- 4 other-than-serious
- Initial Penalties
- $875
- Penalties on Record
- $875
- Site Address
- 1160 Oak Knoll Ave., Napa, CA 94558
- Industry
- Not classified in OSHA's inspection record.
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (4 of 4 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 5144 Respiratory Protection OSHA citation code: 5144 C01 | Other | 6 | 6 | $300 | $300 | Apr 3, 2001 | - | - |
| 01002 | 3314 The Control of Hazardous Energy for the Cleaning, Repairing, Servicing, Setting-Up, and Adjusting Operations of Prime Movers, Machinery and Equipment, Including Lockout/Tagout OSHA citation code: 3314 G | Other | 1 | 1 | $200 | $200 | Apr 3, 2001 | - | - |
| 01003 | 5097 Hearing Conservation Program OSHA citation code: 5097 A | Other | 1 | 1 | $225 | $225 | Apr 3, 2001 | - | - |
| 01004 | 5194 Hazard Communication OSHA citation code: 5194 E01 | Other | 1 | 12 | $150 | $150 | Apr 3, 2001 | - | - |
Sep 27, 1995#120182753Sep 27, 1995Planned (H) · Complete scope, Safety#120182753$1351 viol.1 violation$135 in penalties
Inspection #120182753
Dates
- Opened
- Sep 27, 1995
- Closing Conference Date
- Sep 27, 1995
- Closed
- Jan 25, 1996
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 26
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 other-than-serious
- Initial Penalties
- $135
- Penalties on Record
- $135
- Site Address
- 1160 Oak Knoll Ave., Napa, CA 94558
- Industry
- Not classified in OSHA's inspection record.
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3203 Injury and Illness Prevention Program OSHA citation code: 3203 A | Other | 1 | 4 | $135 | $135 | Jan 4, 1996 | - | - |
Oct 23, 1992#119723229Oct 23, 1992Planned (H) · Complete scope, Safety#119723229$1,4507 viol.7 violations$1,450 in penalties
Inspection #119723229
Dates
- Opened
- Oct 23, 1992
- Closing Conference Date
- Oct 23, 1992
- Closed
- Feb 23, 1994
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 32
Violations and Penalties
- Total Violations
- 7
- Violation Types
- 7 other-than-serious
- Initial Penalties
- $1,450
- Penalties on Record
- $1,450
- Site Address
- 1160 Oak Knoll Ave., Napa, CA 94558
- Industry
- Not classified in OSHA's inspection record.
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (7 of 7 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3270 Access General OSHA citation code: 3270 B | Other | 2 | 4 | $300 | $300 | Nov 23, 1992 | - | - |
| 01002 | 5144 Respiratory Protection OSHA citation code: 5144 C | Other | 4 | 4 | $300 | $300 | Nov 23, 1992 | - | - |
| 01003 | 5144 Respiratory Protection OSHA citation code: 5144 D04 | Other | 4 | 4 | $150 | $150 | Oct 30, 1992 | - | - |
| 01004 | 2340.16 Work Space About Electric Equipment OSHA citation code: 23400016 B | Other | 1 | 1 | $150 | $150 | Nov 23, 1992 | - | - |
| 01005 | 3661 Brakes and Warning Devices OSHA citation code: 3661 C | Other | 1 | 1 | $150 | $150 | Nov 6, 1992 | - | - |
| 01006 | 5194 Hazard Communication OSHA citation code: 5194 E01 | Other | 1 | 8 | $150 | $150 | Nov 23, 1992 | - | - |
| 01007 | 461 Permits to Operate OSHA citation code: 461 A | Other | 2 | 1 | $250 | $250 | Oct 30, 1992 | - | - |
Penalty amounts may differ from final amounts after settlement or judicial review. How to read these records
About these records
A company page groups inspections with the same normalized employer name, city and state; it is not a legal-entity identifier (how pages are grouped).
This page displays public OSHA enforcement data. Status text follows the DOL inspection record first and may include citation-level context when the inspection feed and citation records are out of sync. Penalty amounts shown reflect the latest penalty amounts on record in the DOL database and may differ from initial assessments or final amounts. This is not an official OSHA resource.
OSHA's public enforcement data does not publish a "guilty" or "not guilty" field for inspections. The closest outcome fields available are the citation counts, penalty amounts, contest dates, final-order dates, and the inspection close date shown on this page. How to interpret these status fields. How initial and current penalties are recorded.
OSHA may publish multiple citation rows in the same inspection with the same standard and penalty fields. Separate rows can still differ in OSHA metadata such as citation identifier, recorded instance count, exposed workers, or gravity value. Contest and Final Order columns show citation-level dates from OSHA's enforcement record. A dash means OSHA's record does not currently show that activity for the citation.
Understanding These Penalties
The maximum penalty for a serious violation in 2025 is $16,550 per violation. For willful violations, the range is $11,823 to $165,514. The current penalty column shows the latest amount on record in OSHA's database for each citation. When the current penalty differs from the initial penalty, OSHA's records show that the amount changed during the enforcement process, but this page does not determine the specific reason for each change. Penalty amounts are set by OSHA and adjusted annually for inflation.
3 inspections, 1992 to 2001. Each row is one inspection; point at or tap a row for its dates and totals.
Source: DOL OSHA enforcement data (inspections and violations), linked via activity_nr (exact government key).
Penalty changes: Amounts shown reflect what OSHA's enforcement record publishes. The reason for any change is not stated unless OSHA's record explicitly says so.
Short cases: When a case closed soon after it opened, the closed marker is drawn slightly to the right so both markers stay visible. Each row's card shows the exact dates.