Sediment Surveys

GLEC’s extensive field service capabilities and equipment set us apart from other companies.  We have four highly experienced field crews available to fulfill a wide range of survey missions.  GLEC owns and operates a large inventory of specialized field sampling equipment to conduct sediment sampling surveys.  Sediment sampling equipment includesdredges (standard Ponar, petite Ponar, and Eckman samplers), gravity corers (GLEW samplers), and 2-inch and 4-inch diameter sediment core sampling equipment that can be advanced using either a vibracore unit or pneumatic drivecore equipment.  GLEC’s 26 foot crane-deployable sediment coring boat is equipped with a customized pneumatic vibracore core sampler capable of retrieving up to 10 foot core samples in river and harbor environments.   The sediment coring boat has collected samples in water depths as shallow as 6-12 inches and as deep as 70 feet. Sediment core systems use either a pneumatic vibracore unit or drivecore sediment sampling unit. The pneumatic drive core unit can obtain 4-inch OD diameter cores that can range up to 10-12 feet long.

GLEC’s field crews have specialized training with respect to water safety.  In addition, they have either 24-hour or 40-hour HAZWOPER training.  GLEC’s boats are licensed and registered in the State of Michigan. Because GLEC owns all of its field equipment, we can easily accommodate client scheduling and fast-turnaround requirements.

Contaminated Sediments



John Barkach

Senior Program Manager
Phone: 248-538-0900


GLEC operates one of only a few U.S. laboratories accredited for whole sediment toxicity testing. GLEC also maintains NELAP accreditation for chlorophyll and nutrient chemistry testing.


GLEC's Columbus, OH laboratory is ADEQ accredited for Acute Toxicity and Chronic Toxicity testing.



Great Lakes Environmental Center

739 Hastings Street
Traverse City, MI   49686

Phone: (231) 941-2230
Fax: (231) 941-2240