Diamond Environmental Services Lp is an active intrastate non-hazmat carrier based in San Marcos, CA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 233 | 75 | 0 |
| Tractors | 11 | 0 | 0 |
| Trailers | 16 | 0 | 0 |
| Total Power Units | 319 | ||
Distinct vehicles · 24 mo
vs 319 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 60% | 93% | Around peer average |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 98% | 98% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 70% | 88% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 3 | — | 6.67% |
| Vehicle | 0 | 12 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Apr 1, 2025 | 0 | 0 | 1 | 1 |
| Jan 1, 2025 | 1 | 0 | 0 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 46 | 10 | 13 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 26, 2026 | CA | STRAIGHT TRUCK | 2 | 0 |
| Mar 11, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Jan 16, 2026 | CA | STRAIGHT TRUCK | 0 | 1 |
| Jan 6, 2026 | CA | STRAIGHT TRUCK | 0 | 0 |
| Dec 31, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 3 | 0.12 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 25 | 3.26 | — |
| Driver Fitness | 4 | 0.84 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 1 state. Top state CA accounts for 100% of activity. Activity outside home state (CA): 0%.
| Driver Fitness |
| 4 |
| 4 |
| 4 |
| Unsafe Driving | 3 | 1 | 0 |
| CA |
| STRAIGHT TRUCK |
| 1 |
| 0 |
| Dec 22, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Oct 29, 2025 | CA | STRAIGHT TRUCK | 1 | 0 |
| Oct 15, 2025 | CA | STRAIGHT TRUCK | 0 | 0 |
| Oct 9, 2025 | CA | STRAIGHT TRUCK | 3 | 1 |
| Aug 27, 2025 | CA | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 26, 2026 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Mar 26, 2026 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Dec 31, 2025 | 3939ALLPL | Lighting - License plate lamp inoperative | Vehicle Maintenance | — |
| Oct 29, 2025 | 39311A1LSML | Lighting - Side marker lamp(s) missing | Vehicle Maintenance | — |
| Oct 9, 2025 | 38395ALCDL | Restriction - (CDL) - Operate a CMV in violation of a restriction | Driver Fitness | Yes |
| Oct 9, 2025 | 39311A1LRR | Lighting - Reflex reflector(s) missing or improper | Vehicle Maintenance | — |
| Oct 9, 2025 | 3939ALCL | Lighting - Clearance lamp(s) inoperative | Vehicle Maintenance | — |
| Aug 27, 2025 | 3922SLLCP | State/Local Laws - Operate a CMV while using a cellular phone | Unsafe Driving | — |
| Jul 24, 2025 | 38391ALCDL | License (CDL) - Operate a CMV without proper CDL class | Driver Fitness | Yes |
| Jul 24, 2025 | 3963A1F | Fuel - Dripping leak. | Vehicle Maintenance | Yes |