Op-Tech Environmental Services

Op-Tech Environmental Services is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• General Contractors & Building Contractors
• Environmental Contractors

North American Industry Classification System (NAICS) Categories:

• New Single-Family Housing Construction (Except Operative Builders) > Contractors, General
• Other Scientific And Technical Consulting Services > Consultants Environmental > Environmental Contractors

Standard Industry Classification (SIC) Categories:

• General Contractors - Single-Family Houses > General Contractors - Residential
• Special Trade Contractors, Nec > Environmental Contractors