Establishment profile
SIERRA ROCK LLC
1845 QUARRY RD, PLACERVILLE, CA, 95667
212319 — Other Crushed and Broken Stone Mining and Quarrying
Summary
SIERRA ROCK LLC has accumulated 19 OSHA violations across 23 inspections over 35 years of recorded history, with $3,010 in total assessed penalties.
The establishment sits in the 95th percentile for violations within its industry-state peer group of 1,680 employers. Inspection frequency runs at the 99th percentile. The most recent enforcement activity was recorded 1 year ago.
Federal records were found in 2 of 15 sources. Sources without matching records returned empty for this establishment.
Agency coverage
SIERRA ROCK LLC appears in OSHA workplace safety, MSHA mine safety, and FMCSA motor carrier registration records only. No matching records were found in WHD wage enforcement, EPA environmental compliance, NLRB labor relations, OFLC visa and labor certification (historical), SAM.gov federal debarment, CMS nursing home enforcement, CPSC product recalls, or NHTSA vehicle recalls.
OSHA workplace safety
52% of inspections at this establishment produced violations, with 2 inspections producing serious-or-greater violations.
Most-cited OSHA standards
Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 18 distinct standards shown · 19 citations in this view · $3,010 in penalties.
| CFR section | Citations | Inspections | Total penalty | First cited | Last cited |
|---|---|---|---|---|---|
| 6984 C | 2 | 2 | — | Mar 2001 | May 2011 |
| 341 D05 A | 1 | 1 | $375 | Apr 2009 | Apr 2009 |
| 3214(B) | 1 | 1 | $325 | Aug 2018 | Aug 2018 |
| 6151(C)(1) | 1 | 1 | $305 | Oct 2025 | Oct 2025 |
| 3395(I) | 1 | 1 | $260 | Aug 2018 | Aug 2018 |
| 3203(A) | 1 | 1 | $260 | Aug 2018 | Aug 2018 |
| 7016(I) | 1 | 1 | $260 | Aug 2018 | Aug 2018 |
| 3212(A)(2)(A) | 1 | 1 | $205 | Oct 2025 | Oct 2025 |
| 4650(D) | 1 | 1 | $205 | Oct 2025 | Oct 2025 |
| 6151(C)(4) | 1 | 1 | $195 | Aug 2018 | Aug 2018 |
| 29 CFR 2473.0001 A | 1 | 1 | $195 | Aug 2018 | Aug 2018 |
| 3999(B) | 1 | 1 | $165 | Sep 2021 | Sep 2021 |
| 3276(E)(11) | 1 | 1 | $110 | Oct 2014 | Oct 2014 |
| 29 CFR 2340.0023 | 1 | 1 | $100 | Sep 1996 | Sep 1996 |
| 4851 B | 1 | 1 | $50 | Oct 2013 | Oct 2013 |
| 7014(G) | 1 | 1 | — | Aug 2023 | Aug 2023 |
| 5251 N | 1 | 1 | — | Aug 2011 | Aug 2011 |
| 1592 A | 1 | 1 | — | Aug 1999 | Aug 1999 |
Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.
Peer comparison
Worse on violations than nearly every other employer in NAICS 2123 within CA. Peer group: 1,680 employers. This establishment has 19 OSHA violations; peer median is 2.
Safety self-report (OSHA 300A)
No self-reported injury rates filed with OSHA's Injury Tracking Application for SIERRA ROCK LLC. Verify directly with OSHA Injury Tracking Application →
Industry benchmark
BLS rates reflect industry-wide averages. Self-reported figures come from OSHA’s Injury Tracking Application; absence of self-reported data does not necessarily indicate non-compliance — many establishments fall below the ITA reporting threshold.
Inspection breakdown
Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.
OSHA severe injury reports
No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for SIERRA ROCK LLC. Verify directly with Occupational Safety and Health Administration →
Activity timeline
Most recent federal enforcement activity recorded 1 year ago. Data on this page is refreshed weekly.
Wage & Hour Division (WHD)
No WHD wage, overtime, or child-labor enforcement cases on file for SIERRA ROCK LLC. Verify directly with Wage and Hour Division →
Mine safety (MSHA)
Company-level in CA — for SIERRA ROCK LLC, not this location alone
Mine Safety & Health Administration — citations issued at mining operations. MSHA records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other SIERRA ROCK LLC operations in the same state.
MSHA citations
Mine Safety and Health Administration citations. S&S (significant and substantial) marks violations that could reasonably contribute to a serious injury. Negligence rating is MSHA’s operator-culpability assessment (none, low, moderate, high, or reckless disregard). Proposed = assessed at issuance; Paid = post-settlement / appeal. 100 citations · 68S&S · $86,974 proposed / $34,516 paid.
| Citation | Mine | Date | Section | S&S | Negligence | Proposed | Paid |
|---|---|---|---|---|---|---|---|
| 8696111 | Diamond Quarry El Dorado, CA | Aug 2012 | — | Yes | HighNegligence | $13,300 | — |
| 8603539 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $6,996 | — |
| 8603537 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | HighNegligence | $5,080 | — |
| 8879921 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | HighNegligence | $3,939 | $3,939 |
| 8603536 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | LowNegligence | $3,143 | — |
| 8991443 | Diamond Quarry El Dorado, CA | Jan 2017 | — | Yes | ModNegligence | $2,438 | $2,438 |
| 8695760 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $1,995 | — |
| 8612693 | Diamond Quarry El Dorado, CA | Aug 2013 | — | Yes | ModNegligence | $1,944 | — |
| 8603530 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,944 | — |
| 8603524 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,944 | — |
| 7972541 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $1,603 | — |
| 6353540 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | HighNegligence | $1,566 | $1,566 |
| 8879915 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,539 | $1,539 |
| 8603548 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,530 | — |
| 8603544 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $1,530 | — |
| 8603534 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,530 | — |
| 8879916 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,508 | $1,508 |
| 8879923 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,211 | $1,211 |
| 8879925 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,187 | $1,187 |
| 8879924 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,187 | $1,187 |
| 9377171 | Diamond Quarry El Dorado, CA | Jun 2018 | — | Yes | ModNegligence | $1,118 | $1,118 |
| 9377003 | Diamond Quarry El Dorado, CA | Aug 2017 | — | Yes | ModNegligence | $1,096 | $1,096 |
| 8879933 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,010 | $1,010 |
| 8696109 | Diamond Quarry El Dorado, CA | Aug 2012 | 104(b) | No | HighNegligence | $1,000 | — |
| 8696108 | Diamond Quarry El Dorado, CA | Aug 2012 | 104(b) | No | HighNegligence | $1,000 | — |
| 8879625 | Diamond Quarry El Dorado, CA | Jul 2016 | — | Yes | ModNegligence | $994 | $994 |
| 8879623 | Diamond Quarry El Dorado, CA | Jul 2016 | — | Yes | ModNegligence | $994 | $994 |
| 8785610 | Diamond Quarry El Dorado, CA | Feb 2014 | — | No | ModNegligence | $807 | — |
| 8695757 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $807 | — |
| 8991528 | Diamond Quarry El Dorado, CA | Aug 2017 | — | Yes | ModNegligence | $734 | $734 |
| 8603543 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | LowNegligence | $634 | — |
| 8603540 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | LowNegligence | $634 | — |
| 8603538 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $634 | — |
| 8603535 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $634 | — |
| 8603532 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $540 | — |
| 8603531 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $540 | — |
| 8879926 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $533 | $533 |
| 7972554 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $475 | $475 |
| 8879918 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $453 | $453 |
| 8879631 | Diamond Quarry El Dorado, CA | Jul 2016 | — | No | ModNegligence | $446 | $446 |
| 8603541 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $425 | — |
| 8561077 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | HighNegligence | $425 | $425 |
| 8561076 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | HighNegligence | $425 | $425 |
| 7972535 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $399 | $399 |
| 9507203 | Diamond Quarry El Dorado, CA | Apr 2021 | — | Yes | ModNegligence | $355 | $355 |
| 9502947 | Diamond Quarry El Dorado, CA | Nov 2020 | — | Yes | ModNegligence | $351 | $351 |
| 9502946 | Diamond Quarry El Dorado, CA | Nov 2020 | — | Yes | ModNegligence | $351 | $351 |
| 7972556 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $340 | — |
| 7972555 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $340 | $171 |
| 8879929 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $305 | $305 |
| 8879917 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $305 | $305 |
| 7972542 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $294 | $294 |
| 6353551 | Diamond Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $286 | $286 |
| 8561088 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561087 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561086 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561078 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561073 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8695761 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $270 | — |
| 8695744 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $270 | — |
| 8879455 | Diamond Quarry El Dorado, CA | Sep 2015 | — | Yes | ModNegligence | $243 | — |
| 8695755 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $243 | — |
| 8695754 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $243 | — |
| 8695747 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $243 | — |
| 8603545 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $243 | — |
| 7972552 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | ModNegligence | $242 | $242 |
| 7972540 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $242 | $242 |
| 8879920 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $239 | $239 |
| 9377177 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 9377176 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 9377175 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 7996521 | Diamond Quarry El Dorado, CA | Apr 2002 | — | Yes | ModNegligence | $224 | $224 |
| 7996083 | Diamond Quarry El Dorado, CA | Mar 2001 | — | Yes | ModNegligence | $224 | $224 |
| 9377002 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991531 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991530 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | LowNegligence | $220 | $220 |
| 8991529 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991527 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991526 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 6353543 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $217 | $217 |
| 6353542 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $217 | $217 |
| 6370689 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $217 | $217 |
| 7992434 | Weber Creek Quarry El Dorado, CA | Sep 2000 | — | No | HighNegligence | $207 | $207 |
| 8879930 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $204 | $204 |
| 8879928 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $204 | $204 |
| 7972539 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $196 | $196 |
| 7972538 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $196 | $196 |
| 7972550 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | ModNegligence | $184 | $184 |
| 6353550 | Diamond Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370687 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370686 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370684 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6356866 | Diamond Quarry El Dorado, CA | Dec 2003 | — | Yes | ModNegligence | $177 | $177 |
| 6345613 | Diamond Quarry El Dorado, CA | Jan 2003 | — | Yes | ModNegligence | $173 | $173 |
| 8912426 | Diamond Quarry El Dorado, CA | Apr 2024 | — | Yes | ModNegligence | $172 | $172 |
| 8879659 | Diamond Quarry El Dorado, CA | Oct 2018 | 110(j) | No | HighNegligence | $154 | $154 |
| 9680942 | Diamond Quarry El Dorado, CA | Oct 2025 | — | No | LowNegligence | $151 | $151 |
| 9890712 | Diamond Quarry El Dorado, CA | Apr 2025 | — | No | LowNegligence | $151 | $151 |
| 9890711 | Diamond Quarry El Dorado, CA | Apr 2025 | — | No | LowNegligence | $151 | $151 |
| 9377174 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $151 | $151 |
Source: MSHA citation database. “Contractor” annotations indicate the cited party was on-site at the mine but not the mine’s operator -- responsibility attaches to the contractor LLC, not the mine’s owner. Section codes reference 30 CFR (the Mine Safety and Health regulations).
Labor relations (NLRB)
No NLRB unfair labor practice charges or union representation cases on file for SIERRA ROCK LLC. Verify directly with National Labor Relations Board →
Visa & labor certification (OFLC) — historical
No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for SIERRA ROCK LLC. Verify directly with Office of Foreign Labor Certification →
Environmental compliance (EPA)
No EPA inspections or formal enforcement actions on file for SIERRA ROCK LLC. Verify directly with Environmental Protection Agency →
EPA-registered facilities
Every EPA ECHO facility associated with this employer, sorted most-significant first. Each row links to EPA’s Detailed Facility Report for the source-of-truth record. Permits column lists active programs (Air = Clean Air Act, Water = Clean Water Act, RCRA = hazardous waste, TRI = Toxics Release Inventory reporting). 2 facilities · 1 marked inactive.
| Facility | Permits | Status | Inspections | Formal actions | Penalties | Last inspected | ECHO |
|---|---|---|---|---|---|---|---|
SIERRA ROCK 1845 QUARRY RD · PLACERVILLE, CA, 95667 | AirWaterRCRA | No Violation Identified | 0 | 0 | — | — | View → |
SIERRA ROCK 5140 QUARRY RD · PLACERVILLE, CA, 95667 | — | — | 0 | 0 | — | — | View → |
Source: EPA ECHO (Enforcement and Compliance History Online). Compliance status follows EPA’s own labels (“Sig Violation” = significant noncompliance; QNCR = quarters of noncompliance over the recent reporting window). Inactive facilities (struck through) retain historical enforcement records even after operations ceased.
Motor carrier safety (FMCSA)
Federal Motor Carrier Safety Administration — DOT-regulated carrier registration and fleet data.
Inspection history
| Date | Trigger | Violations | Serious | Penalty | |
|---|---|---|---|---|---|
| 2025-08-11 | Planned | 3 | — | $715 | |
| 2023-06-14 | Planned | 1 | — | $0 | |
| 2021-06-25 | Planned | 1 | — | $165 | |
| 2018-07-25 | Planned | 6 | — | $1,495 | |
| 2014-10-14 | Planned | 1 | — | $110 | |
| 2013-10-07 | Planned | 1 | — | $50 | |
| 2011-07-21 | Planned | 1 | — | $0 | |
| 2011-04-20 | Complaint | 1 | 1 | $0 | |
| 2010-07-22 | Planned | 0 | — | $0 | |
| 2008-11-21 | Planned | 1 | — | $375 | |
| 2007-07-09 | Planned | 0 | — | $0 | |
| 2006-05-01 | Planned | 0 | — | $0 | |
| 2003-03-06 | Complaint | 0 | — | $0 | |
| 2002-08-13 | Planned | 0 | — | $0 | |
| 2001-08-16 | Follow-up | 0 | — | $0 | |
| 2001-03-06 | Complaint | 1 | 1 | $0 | |
| 2000-09-14 | Planned | 0 | — | $0 | |
| 1999-07-23 | Planned | 1 | — | $0 | |
| 1998-06-08 | Planned | 0 | — | $0 | |
| 1997-09-10 | Complaint | 0 | — | $0 | |
| 1996-08-27 | Planned | 1 | — | $100 | |
| 1995-05-19 | Planned | 0 | — | $0 | |
| 1990-09-18 | Planned | 0 | — | $0 |
Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.
In the news
Other employers in this industry and state
Other employers in other crushed and broken stone mining and quarrying within CA, ordered by federal enforcement volume:
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- SYAR INDUSTRIES, INC.HOPLAND — 3 federal enforcement records
- GAIL MATERIALS, INC.CORONA — 3 federal enforcement records
- HANSON AGGREGATESSAN DIEGO — 3 federal enforcement records
- HANSON AGGREGATESSAN MARCOS — 3 federal enforcement records
- HANSON AGGREGATES MID-PACIFIC, INC.CONCORD — 3 federal enforcement records
- RMC PACIFIC MATERIALS INCPLEASANTON — 3 federal enforcement records
- CEMEX INCDAVENPORT — 3 federal enforcement records
- CALMAT COCHULA VISTA — 3 federal enforcement records
- CEMEX CONSTRUCTION MATERIALS PACIFIC LLCCLAYTON — 3 federal enforcement records
Related searches
- Other Crushed and Broken Stone Mining and QuarryingAll employers in this industry
- Employers in CAState-wide enforcement data
- Other Crushed and in CAIndustry × state cross-filter
About this data
This profile aggregates federal enforcement records on SIERRA ROCK LLC from every major federal compliance and enforcement source. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.
Establishments are matched across agencies using normalized employer name, state, and ZIP code.
OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.
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Contact sales →Frequently asked
- What is SIERRA ROCK LLC's OSHA violation history?
- SIERRA ROCK LLC has 23 OSHA inspections on record with 19 violations and $3,010 in total penalties.
- How does SIERRA ROCK LLC's safety record compare to its industry?
- SIERRA ROCK LLC operates in the other crushed and broken stone mining and quarrying industry. The industry average Total Recordable Incident Rate (TRIR) is 1.8.