Established in 1991 as a small environmental drilling contractor with one rig, Connelly and Associates, Inc. now ranks as one of the largest geotechnical and environmental drilling firms in the Washington, D.C. and Baltimore, Maryland region.
We operate in four states and the District of Columbia from our two office locations:
- Frederick, Maryland
- Manassas, Virginia
Our mission is to provide drilling services of the highest level to the Mid-Atlantic region. Our employees conduct themselves in a professional manner and enjoy their work. Our equipment is well maintained, dependable and constantly updated. Our clients regard us as partners in the process and not simply another subcontractor. Our clients’ needs are more than adequately met by our professional employees and our outstanding service. We continue our success with a consistent focus on these ideals.
Connelly and Associates, Inc. is a certified contractor by the National Ground Water Association and a participating member of the National Drilling Association.
Our state certifications include:
Licensed Construction Firm
Licensed Geotechnical Well Drillers
Licensed Water Well Drillers
Licensed Class A Contractor
Licensed Specialty Contractor
Connelly and Associates strives to provide the highest level of service and commitment to our clients. With exceptional loyalty to our clients and their projects, we have built strong, long-standing relationships. Below is a partial list of our clientele.
Earth Engineering, Inc.
ECS Corporate Services, LLC
Environmental Consultants & Contractors, Inc. (ECC, Inc.)
GeoConcepts Engineering, Inc.
Pennoni Associates, Inc.
Schnabel Engineering, Inc.