POTOMAC CONSTRUCTION CO INC

236220 - Commercial and Institutional Building Construction (SPECIFICALLY: CONSTRUCTION AND PROJECT MANAGEMENT); 237110 - Water and Sewer Line and Related Structures Construction (SPECIFICALLY: CONSTRUCTION AND PROJECT MANAGEMENT); 237310 - Highway, Street, and Bridge Construction (SPECIFICALLY: CONSTRUCTION AND PROJECT MANAGEMENT); 238910 - Site Preparation Contractors (SPECIFICALLY: CONSTRUCTION AND PROJECT MANAGEMENT); 238990 - All Other Specialty Trade Contractors (SPECIFICALLY: POST CONSTRUCTION CLEANUP); 541620 - Environmental consulting services; 611430 - Professional and Management Development Training (SPECIFICALLY: TRAINING IN OSHA, EPA, ASBESTOS, LEAD AND MOLD ABATEMENT, HAZARDOUS WASTE DISPOSAL, CPR AND FIRST AID)

541611 - Administrative Management and General Management Consulting Services; ; 541612 - Human Resources Consulting Services (MANAGEMENT SERVICES-ORGANIZATIONAL DEVELOPMENT AND TRAINING); ; 561110 - Office Administrative Services (DOCUMENT, DATA/RECORD, RETRIEVAL.); ; 561311 - Employment Placement Agencies (EXECUTIVE PLACEMENT SERVICES); ; 561320 - Temporary help services