Power generation, geothermal · California

Mammoth Pacific L.P.

Mammoth Lakes, CA · ~23 workers · 2 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
4.6
Avg TCR
1.2
Industry avg
0
Fatalities
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The verdict

Mammoth Pacific L.P. runs at 382% of its industry's injury rate - far more dangerous than the typical Power generation, geothermal workplace, earning a grade F.

Mammoth Pacific L.P.: 4.6 TCR = 382% of Power generation, geothermal BLS 1.2 · 2y Form 300A (see methodology below)

Mammoth Pacific L.P. safety composite

Mammoth Pacific L.P. scores strongest on dart rate (safer than 71% of same-industry peers) and weakest on total case rate (tcr) (safer than 18%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

D

45/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 4.58 per 100 workers

Safer than 18% of industry peers

DART rate
C 0 per 100 workers

Safer than 71% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−9.2

2018→2019

Mammoth Pacific L.P. injury rate improved

Mammoth Pacific L.P.'s TCR fell 9.2 from 9.2 in 2018 to 0.0 in 2019. Peak filing year was 2018 at 9.2 TCR. In 2019, DART was 0× this establishment's average TCR (severity share of cases).

2018=9.2 · 2019=0.0

OSHA ITA Form 300A scorecard

Establishment book 221116 · Mammoth Lakes, CA ABOVE-IND · SMALL

Grade F · TCR 4.6 · 382% of ind

  • DART 0.0 DART
  • RANK #7/9
  • PHOTO Imperial Valley Cent…
  • BOOK 2y book
  • INJ 2 inj
  • SIZE ~23 FTE

Nearest TCR peer: Imperial Valley Centralized Services/Imperial Valley Centralized Maintenance (0.5 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Mammoth Pacific L.P. in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Mammoth Pacific L.P. averages 4.6 TCR (382% of the Power generation, geothermal BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Mammoth Pacific L.P. TCR series: 2018=9.2 · 2019=0 · BLS 1.2

Where Mammoth Pacific L.P. falls in its industry

17 Power generation, geothermal establishments

Safer than 18% of graded establishments in this industry, whose median TCR is 2.2.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #7 safest of 9 Power generation, geothermal employers in California.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2019 0.0 0.0 0 0 0
2018 9.2 9.2 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

221116 · CA · Mammoth Lakes

17 Power generation, geothermal employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 10 employers in Mammoth Lakes, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Imperial Valley Centralized Services/Imperial Valley Centralized Maintenance 5.1 TCR
NAICS-TCR Heber Geothermal Facility 3.7 TCR
NAICS-TCR Ormesa Geothermal Projects 3.4 TCR
NAICS-TCR Puna Geothermal Venture 3.3 TCR
STATE-SIZE James Diedrich Farms 23 FTE
STATE-SIZE Tri-Fanucchi Farms,LLC 23 FTE
STATE-SIZE KAN2 - 04 23 FTE
STATE-SIZE Kyer Farms 23 FTE
CITY-NEAR Mammoth Mountain Ski Area, LLC 2,452 FTE
CITY-NEAR Mammoth Hospital 410 FTE
CITY-NEAR California Department of Transportation Facility 314 315 FTE
CITY-NEAR 6962-SWY-0029-0029-02400 102 FTE
NAT-TCR French's Air Conditioning 4.6 TCR
NAT-TCR QSI Tremonton 4.6 TCR
NAT-TCR LifePath- Bethlehem 4.6 TCR
NAT-TCR 1571 Imperial Way 4.6 TCR
NAT-SIZE Megha LLC 23 FTE
NAT-SIZE Bristol Store 23 FTE
NAT-SIZE Val-Tex, Inc. 23 FTE
NAT-SIZE Pap Mobile 23 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2019, 2018. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.