235940  Wrecking and Demolition Contractors

235950  Building Equipment and Other Machinery Installation Contractors

235990  All Other Special Trade Contractors

561210  Facilities Support Services

561720  Janitorial Services

562112  Hazardous Waste Collection

562119  Other Waste Collection

562910  Remediation Services

562998  All Other Miscellaneous Waste Management Services

Minority Certifications

HEI is certified by the following agencies:

U.S. SBA 8(a) (graduated in 2004)           State of NH DOT
State of ME DOT                                       New England Minority Purchasing Council
 

Staff

HEI's valuable expertise in environmental and construction management includes: completion of project-required documentation, from technical submittals to quality assurance and quality control plans and closing reports; formation of and adherence to project schedules and budgets; preparation and implementation of project-specific health and safety plans.  HEI provides clients a fully trained staff that is responsive, proficient, and resourceful. Each project is professionally managed under the direction of an experienced project manager.