Environmental Maintenance Services Inc

Doing business as Bioserv

USDOT activeAuthority activeCarrier & Shipper · InterstateHazmat

USDOT693501
MC924851
LocationProspect, CT
Phone(203) 758-5550
Fleet17 power units · 15 drivers

Environmental Maintenance Services Inc (USDOT 693501, MC-924851) is an interstate motor carrier based in Prospect, Connecticut with 17 power units and 15 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 17 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 10, 2026

Operating authorityActive · MC-924851Motor Carrier of Property Liability insurance$1,000,000 on fileRequired: $1,000,000 Safety ratingSatisfactoryRated Dec 31, 2002 Out-of-service ordersNone on fileFMCSA out-of-service orders file Registration (MCS-150)Updated Dec 17, 202510 months ago Process agent (BOC-3)On fileProcess Agent Service Company, Inc.

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Operating authority

Status from the FMCSA Company Census File, November 10, 2026

Docket	Authority type	Status
MC-924851	Motor Carrier of Property (except Household Goods)	Active

First granted on July 27, 2015 · see full authority history.

Insurance

FMCSA licensing system (Motus), November 11, 2026

Liability (BIPD) required$1,000,000
Liability (BIPD) on file$1,000,000
Cargo insurance required / on fileNo / No
Bond required / on fileNo / No

Filings on file

Type	Insurer	Coverage	Effective
Liability (BIPD) BMC-91X	Key Risk Insurance Company	$1,000,000	May 14, 2026

Insurance history: 12 past filings

Type	Insurer	Effective	Ended	Reason
Liability (BIPD)	Key Risk Insurance Company	May 14, 2026	—	—
Liability (BIPD)	Key Risk Insurance Company	May 14, 2025	—	Replaced
Liability (BIPD)	Key Risk Insurance Company	May 14, 2024	May 14, 2025	Replaced
Liability (BIPD)	Key Risk Insurance Company	May 14, 2023	May 14, 2024	Replaced
Liability (BIPD)	Key Risk Insurance Company	May 14, 2022	May 14, 2023	Replaced
Liability (BIPD)	Arch Insurance Company	May 14, 2021	May 14, 2022	Cancel
Liability (BIPD)	Arch Insurance Company	May 14, 2020	May 14, 2021	Cancel
Liability (BIPD)	Arch Insurance Company	May 14, 2019	May 14, 2020	Cancel
Liability (BIPD)	Arch Insurance Company	Nov 7, 2018	May 14, 2019	Cancel
Liability (BIPD)	Arch Insurance Company	May 14, 2018	Nov 7, 2018	Cancel
Liability (BIPD)	Arch Insurance Company	May 14, 2017	May 14, 2018	Cancel
Liability (BIPD)	Plaza Insurance Company	May 14, 2015	May 14, 2017	Replaced

Process agent (BOC-3)

Process Agent Service Company, Inc., Sioux Falls, SD

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

17
Inspections: 5.9%
Driver out-of-service: 0.0%
Vehicle out-of-service: 0
Crashes

Inspected most often in: New York (9), Connecticut (4), New Jersey (3), Pennsylvania (1).

Most recent inspection on file: October 15, 2026.

FMCSA safety rating: Satisfactory (rated December 31, 2002)

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

November 26, 2026Operating authority involuntary suspension notice — Motor Carrier of Property (except Household Goods)
June 1, 2022Reinstated — Common carrier authority; Motor Carrier of Property (except Household Goods)
May 23, 2022Involuntary revocation — Common carrier authority
April 19, 2021Involuntary revocation — Common carrier authorityDiscontinued revocation on May 14, 2021
April 17, 2020Involuntary revocation — Common carrier authorityDiscontinued revocation on May 15, 2020
April 17, 2019Involuntary revocation — Common carrier authorityDiscontinued revocation on May 14, 2019
November 26, 2018Reinstated — Common carrier authorityRevoked on May 23, 2022
November 13, 2018Involuntary revocation — Common carrier authority

Show 2 earlier events

April 17, 2018Involuntary revocation — Common carrier authorityDiscontinued revocation on May 14, 2018
July 27, 2015Granted — Common carrier authorityRevoked on November 13, 2018

Fleet and operations

From the company’s own registration (Form MCS-150), updated December 17, 2025

Power units: 17
Trucks: 17
Trucks owned: 17
Drivers: 15
CDL drivers: 0
Interstate drivers: 12
Intrastate drivers: 3
Miles traveled: 415,685 (2024)
Classification: Private property; Authorized for hire
Hazardous materials: Yes
USDOT registered: June 11, 1997
Address: 10 Gramar Avenue, Prospect, CT 06712
Phone (registered with FMCSA): (203) 758-5550

Cargo carried

Liquids / gases
Chemicals
Paper products
Waste materials

Key facts

USDOT number 693501 was registered on June 11, 1997.
Operating authority MC-924851 was first granted on July 27, 2015.
The company last updated its FMCSA registration (Form MCS-150) on December 17, 2025.
It reported 415,685 vehicle miles traveled in 2024.
One insurance filing is on file, including Liability (BIPD) coverage with Key Risk Insurance Company.
It had 17 roadside inspections in the last 24 months; 9 inspections recorded no violations.
Its most recent FMCSA safety rating is Satisfactory, issued on December 31, 2002.
Its process agent filing (BOC-3) is with Process Agent Service Company, Inc..

Other carriers in Prospect, CT

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