SIERRA CHEMICAL
2302 LARKIN CIRCLE, SPARKS, NV 89431
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Sep 10, 1999#302865951Sep 10, 1999Planned (H) · Complete scope, Safety#302865951$00 viol.0 violations$0 in penalties
Inspection #302865951
Dates
- Opened
- Sep 10, 1999
- Closing Conference Date
- Sep 10, 1999
- Closed
- Sep 10, 1999
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 25
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- Mustang Facility, Kean Canyon, Sparks, NV 89434
- 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.
Feb 19, 1999#302480579Feb 19, 1999Planned (H) · Complete scope, Safety#302480579$00 viol.0 violations$0 in penalties
Inspection #302480579
Dates
- Opened
- Feb 19, 1999
- Closing Conference Date
- Feb 19, 1999
- Closed
- Feb 19, 1999
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 35
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- Mustang Facility, Kean Canyon, Sparks, NV 89434
- 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.
Jan 7, 1998#301957643Jan 7, 1998FatalityAccident (A) · Complete scope, HealthFatality#301957643$220,50070 viol.70 violations$220,500 in penalties
Inspection #301957643
Dates
- Opened
- Jan 7, 1998
- Closing Conference Date
- Apr 17, 1998
- Contested
- May 26, 1998
- Closed
- Jun 6, 2000
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 26
- Related Activity
- 1 accident
Violations and Penalties
- Total Violations
- 70
- Violation Types
- 63 serious, 7 willful
- Initial Penalties
- $220,500
- Penalties on Record
- $220,500
- Site Address
- Mustang Facility, Kean Canyon, Sparks, NV 89434
- Industry
- Not classified in OSHA's inspection record.
Accident Inspection: This inspection record is categorized as an accident inspection in the U.S. Department of Labor OSHA enforcement data. Employers must report work-related fatalities within 8 hours, and work-related inpatient hospitalizations, amputations, or losses of an eye within 24 hours. An accident-related inspection does not by itself determine fault.
Incident Investigation Summaries
Incident investigation summaries linked to this inspection through OSHA's accident and injury enforcement data. These summaries describe the reported incident. The enforcement outcome for the linked inspection is in the inspection details above.
Four employees killed in explosions at manufacturing plant
Enforcement Outcome
Citation contest activity appears on May 26, 1998. Final orders are recorded through Sep 9, 1999. Penalty changes shown on this page reflect the latest amounts published in OSHA's enforcement data.
Violations
Violation list (5 of 70 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.119 Process Safety Management of Highly Hazardous Chemicals OSHA citation code: 19100119 F01 | Willful | 1 | 17 | $49,000 | $49,000 | May 8, 1998 | May 26, 1998 | - |
| 01001B | 1910.119 Process Safety Management of Highly Hazardous Chemicals OSHA citation code: 19100119 F01 ID | Willful | 1 | 17 | $0 | $0 | May 8, 1998 | May 26, 1998 | - |
| 01001C | 1910.119 Process Safety Management of Highly Hazardous Chemicals OSHA citation code: 19100119 F02 | Willful | 1 | 17 | $0 | $0 | May 8, 1998 | May 26, 1998 | - |
| 01001D | 1910.119 Process Safety Management of Highly Hazardous Chemicals OSHA citation code: 19100119 F01 IF | Willful | 1 | 17 | $0 | $0 | May 8, 1998 | May 26, 1998 | - |
| 01001E | 1910.119 Process Safety Management of Highly Hazardous Chemicals OSHA citation code: 19100119 F03 | Willful | 2 | 17 | $0 | $0 | May 8, 1998 | May 26, 1998 | - |
Showing the 5 violations listed first by citation identifier. This inspection has 70 total violations documented in the U.S. Department of Labor OSHA enforcement database. The complete violation list is available at enforcedata.dol.gov.
Sep 25, 1996#301695474Sep 25, 1996Planned (H) · Complete scope, Health#301695474$00 viol.0 violations$0 in penalties
Inspection #301695474
Dates
- Opened
- Sep 25, 1996
- Closing Conference Date
- Jan 15, 1997
- Closed
- Jan 15, 1997
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 65
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 2302 Larkin Circle, Sparks, NV 89431
- 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.
Mar 25, 1993#123829418Mar 25, 1993Referral (C) · Partial scope, Safety#123829418$00 viol.0 violations$0 in penalties
Inspection #123829418
Dates
- Opened
- Mar 25, 1993
- Closing Conference Date
- Mar 25, 1993
- Closed
- Mar 25, 1993
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 6
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- Mustang Facility, Kean Canyon, Sparks, NV 89434
- Industry
- Not classified in OSHA's inspection record.
Referral Inspection: This inspection record is categorized as a referral inspection in the DOL OSHA enforcement data. Referral inspections can result from another agency, another OSHA activity, or another source referring a potential hazard to OSHA.
Aug 18, 1992#111194890Aug 18, 1992Referral (C) · Partial scope, Health#111194890$1,2004 viol.4 violations$1,200 in penalties
Inspection #111194890
Dates
- Opened
- Aug 18, 1992
- Closing Conference Date
- Sep 15, 1992
- Contested
- Oct 21, 1992
- Final Order
- Dec 27, 1993
- Closed
- Dec 27, 1993
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 18
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 4
- Violation Types
- 4 serious
- Initial Penalties
- $2,400
- Penalties on Record
- $1,200
- Site Address
- 2302 Larkin Circle, Sparks, NV 89431
- Industry
- Not classified in OSHA's inspection record.
Referral Inspection: This inspection record is categorized as a referral inspection in the DOL OSHA enforcement data. Referral inspections can result from another agency, another OSHA activity, or another source referring a potential hazard to OSHA.
Violations
Violation list (4 of 4 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.120 Hazardous Waste Operations and Emergency Response OSHA citation code: 19100120 Q06 | Serious | 1 | 3 | $1,500 | $750 | Nov 17, 1992 | Oct 21, 1992 | Dec 27, 1993 |
| 01001B | 1910.120 Hazardous Waste Operations and Emergency Response OSHA citation code: 19100120 Q06 IIIA | Serious | 1 | 7 | $0 | $0 | Nov 17, 1992 | Oct 21, 1992 | Dec 27, 1993 |
| 01002A | 1910.132 Personal Protective Equipment - General Requirements OSHA citation code: 19100132 A | Serious | 1 | 8 | $900 | $450 | Oct 21, 1992 | Oct 21, 1992 | Dec 27, 1993 |
| 01002B | 1910.132 Personal Protective Equipment - General Requirements OSHA citation code: 19100132 A | Serious | 1 | 8 | $0 | $0 | Nov 17, 1992 | Oct 21, 1992 | Dec 27, 1993 |
Nov 20, 1991#114601164Nov 20, 1991Referral (C) · Partial scope, Health#114601164$00 viol.0 violations$0 in penalties
Inspection #114601164
Dates
- Opened
- Nov 20, 1991
- Closing Conference Date
- Mar 13, 1992
- Closed
- Mar 13, 1992
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 60
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 2302 Larkin Circle, Sparks, NV 89431
- Industry
- Not classified in OSHA's inspection record.
Referral Inspection: This inspection record is categorized as a referral inspection in the DOL OSHA enforcement data. Referral inspections can result from another agency, another OSHA activity, or another source referring a potential hazard to OSHA.
Oct 22, 1990#111195715Oct 22, 1990Unprogrammed Related (G) · Partial scope, Health#111195715$2,3402 viol.2 violations$2,340 in penalties
Inspection #111195715
Dates
- Opened
- Oct 22, 1990
- Closing Conference Date
- Nov 19, 1990
- Closed
- May 4, 1992
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 50
Violations and Penalties
- Total Violations
- 2
- Violation Types
- 2 serious
- Initial Penalties
- $2,340
- Penalties on Record
- $2,340
- Site Address
- 2302 Larkin Circle, Sparks, NV 89431
- Industry
- Not classified in OSHA's inspection record.
Unprogrammed Related Inspection: This inspection record is categorized as an unprogrammed related inspection in the DOL OSHA enforcement data. The public DOL category label is preserved here without adding extra interpretation beyond the government label.
Incident Investigation Summaries
Incident investigation summaries linked to this inspection through OSHA's accident and injury enforcement data. These summaries describe the reported incident. The enforcement outcome for the linked inspection is in the inspection details above.
Employee's finger amputated after hydrofluoric acid burn
Violations
Violation list (2 of 2 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 618038501 | Serious | 1 | 1 | $1,080 | $1,080 | Dec 6, 1990 | - | - |
| 01002 | 1910.151 Medical Services and First Aid OSHA citation code: 19100151 B | Serious | 1 | 50 | $1,260 | $1,260 | Dec 6, 1990 | - | - |
Aug 7, 1990#111194510Aug 7, 1990Follow-Up (F) · Partial scope, Health#111194510$00 viol.0 violations$0 in penalties
Inspection #111194510
Dates
- Opened
- Aug 7, 1990
- Closing Conference Date
- Oct 24, 1990
- Closed
- Jun 27, 1991
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 28
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 2302 Larkin Circle, Sparks, NV 89431
- Industry
- Not classified in OSHA's inspection record.
Follow-Up Inspection: This inspection record is categorized as a follow-up inspection in the DOL OSHA enforcement data. Follow-up inspections are used by OSHA after earlier enforcement activity and can be used to check later compliance status.
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.
Source: U.S. Department of Labor OSHA incident investigation data (`osha_accident` + `osha_accident_injury`). Linked via `rel_insp_nr` to the inspection activity number (exact government key). Injury, body part, source and event values are OSHA's own codes. OSHA states that these fields are not coded according to the requirements under the Occupational Injury and Illness Classification System (OIICS). Only the values present in the OSHA record are listed; an incident with no value that resolves in OSHA's code table shows "Injury details not recorded". Where a record covers several people, each field lists every value recorded across them.
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.
29 inspections, 1990 to 2014. 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.