STI is a Certified Minority Business Enterprise in the States of Maryland,
New Jersey, Virginia, and the District of Columbia.
1

UST/AST Services

STI provides turnkey UST/AST servic...
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2

Remediation Management

Increasingly stringent enforcement ...
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3

Emergency Response and Cleanup

Subsurface Technologies’ fully tr...
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4

Vacuum Truck Services

Subsurface Technologies, Inc. (STI)...
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Welcome to
Subsurface Technologies Inc

Subsurface Technologies, Inc. (STI) provides environmental and construction services to public and private sector clients throughout the United States. Since its founding in 1998, STI has developed a full range of capabilities and a wide client base. STI is a Certified Minority Business Enterprise in the states of Maryland, Virginia, New Jersey and the District of Columbia. With a small, experienced staff, STI is positioned to grow and become a major player in the environmental field.