Carrier profile · USDOT 2367838 · MC-436414 · Updated Jun 13, 2026

CORNERSTONE ENVIRONMENTAL CONTRACTORS INC

1 power unitLocal · 1 statesCONCORD, CA50/100

AUTHORITY STATUS UNKNOWNMC-436414 STATUS UNKNOWNHAZMAT

Observed fleet · trailing 24 mo daily

1Power units

1 observed · MCS-150

—Trailers seen

None observed · 24 mo

12.0Avg age (yr)

2014–2014 · vPIC

Call dispatch(925) 299-9225 Email dispatchnquinn@CORNERSTONEENV.COM

Click to see how we scored it

Load decision · FMCSA snapshot · Jun 13, 2026

Limited record

Not enough federal record to assess. Verify authority and insurance directly.

Established 14 yearsNo active operating authority

Watch · 1

No active operating authorityNo active common, contract, or broker authority is on file for a for-hire carrier.

In good standing · 1

Established 14 yearsOperating authority has been on file since 2013.

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo0.0%

Crashes · fatal

Clean · 24 mo

USDOT registration

yr registered

Authority not on file

Insurance (BIPD)— unknown

No filing on record

Vehicle OOS · 24-mo0.0%

Crashes · fatal

Clean · 24 mo

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots

Fleet typeIdentity

Owner-operator

1 power unit. Brokers price each fleet type apart.

Fleet age vs peersDecoding

—

Not yet decoded

Identity stabilityStable

13 yr unchanged

Same registration since 2013 — no chameleon / reincarnation signal.

Safety

1 inspections · 24 mo

Out-of-service rate· 24-mo cumulative

Vehicle OOS 0.0%24-mo cumulative

050%

Driver OOS 0.0%24-mo cumulative

030%

Every inspection in the window pooled — 1 vehicle and 1 driver inspections over 24 months.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

No roadside inspections on the FMCSA record in this window

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Expected band

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.5 / unit·yr

thin signalabundant signal

Roadside-inspection volume is about what you'd expect for a 1-unit fleet — enough signal to read the safety record, though not a heavy sample.

Registered power units: 1
Inspections · 24 mo: 1
Annualized: ≈1 / yr
Coverage: ≈0.5 inspections / unit · yr

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving2 · 0 OOS
393.9 Inoperative required lampsVehicle Maintenance2 · 0 OOS
393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1 · 0 OOS

Explore full safety record — inspections, BASICs, crashes

Authority & insurance

Can they legally + adequately haul your load?

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.

Explore full authority & insurance record

Equipment & fleet

VIN-decoded · NHTSA vPIC

Capacity· power units = haulable capacity; trailers are towed

Registered power units (MCS-150): 1
Observed power (24 mo): 1
Trailers (towed): 0

Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.

Explore full fleet — VIN roster, equipment mix, age distribution

Operations & lanes

Revealed by inspection density across 1 states · 24 mo

Operating footprint· revealed by roadside-inspection geography

Operating radiusLocal

revealed

States observed

US states

Inspections · 24 mo

CA busiest

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base

CONCORD, CA

4050 PIKE LANE SUITE B

Top corridor

CA 1

Density

fewermore

Shade = roadside inspections, last 24 mo.

See the full operating map — state density, top lanes

Network & fraud

Affiliated entities & reincarnation signals · for review, not a verdict

Shares a company officer with other carriers

randy fowler — 5 carriers: USDOT 995521 USDOT 1478472 USDOT 3478407 USDOT 4249067

Capacity consistency· registered vs roadside-observed power units

Registered (MCS-150)

Observed (24 mo)

Registered and roadside-observed capacity are broadly consistent.

Explore the carrier network & VIN cross-links

Identity & contact

FMCSA census + L&I dossier

Location

Physical address: 4050 PIKE LANE SUITE B, CONCORD, CA, 94520
Mailing address: PO BOX 5127, CONCORD, CA, 94524
Operation: Intrastate (Hazmat)· Hazmat

Contact

Phone: (925) 299-9225
Cell: (925) 234-0560
Fax: (925) 755-8099
Email: nquinn@cornerstoneenv.com
Web domain: cornerstoneenv.com

Registration

Officers: Randy Fowler · Randy Fowler
USDOT / docket: 2367838 · MC-436414
First registered: Jan 4, 2013
Last MCS-150: Jul 25, 2025 · 12,849 mi (2024)
FMCSA safety rating: Not rated
Recordable crash rate: 0.00
D-U-N-S: 942861725

Fleet (self-reported · MCS-150)

Power units

Drivers

CDL drivers

12,849

Annual mileage

Open the full identity & federal record

Federal activity

Daily-captured FMCSA licensing & insurance changes — monitored by Vektor

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.

Open the full federal-record activity feed

Reviews

Verified broker, shipper & driver reviews — moderated

Performance ratings only — never the Vektor risk score

No verified reviews yet

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Verification summaryAuthority, insurance, safety and identity facts for CORNERSTONE ENVIRONMENTAL CONTRACTORS INC.

CORNERSTONE ENVIRONMENTAL CONTRACTORS INC (USDOT 2367838) is unrated by Vektor because the carrier's FMCSA record does not contain enough evidence for a safety score as of Jun 13, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available as of Jun 13, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jun 13, 2026.

Its vehicle out-of-service rate was 0.0% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Jun 13, 2026.

The carrier received 1 roadside inspections in the last 24 months — 1 vehicle-level and 1 driver-level — across 1 state, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.

The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Jun 13, 2026.

It reports 1 power unit and 1 driver in its most recent MCS-150 filing dated Jul 25, 2025.

It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.

Frequently asked

What is CORNERSTONE ENVIRONMENTAL CONTRACTORS INC's USDOT number?

CORNERSTONE ENVIRONMENTAL CONTRACTORS INC's USDOT number is 2367838, and its motor carrier number is MC-436414.

Is CORNERSTONE ENVIRONMENTAL CONTRACTORS INC authorized to operate?

As of Jun 13, 2026, CORNERSTONE ENVIRONMENTAL CONTRACTORS INC is active in the FMCSA register.

What is CORNERSTONE ENVIRONMENTAL CONTRACTORS INC's safety record?

CORNERSTONE ENVIRONMENTAL CONTRACTORS INC has a 0.0% vehicle out-of-service rate (national average 22.26%) across 1 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor does not assign this carrier a safety score — there is not enough federal record to assess it.