As discussed in the Methodology, section, Tetra Tech organizes our sustainability indicators around the "3P" approach—addressing projects, procurement, and internal processes—that is ingrained in Tetra Tech's culture and business model. Triple bottom line analysis incorporating environmental, economic, and social impacts is a core component of Tetra Tech's corporate sustainability reporting.

Each area of our 3P approach is analyzed against the following indicators:

  • Environmental performance, including energy efficiency, recycling, renewable energy, and emission reductions
  • Economic performance, including benefits to our clients and shareholders, and operational efficiency
  • Social performance, including beneficial social project results, shareholder benefits, community outreach, workforce enhancements, and health and safety metrics
  • Integrated performance indicators yielding double or triple bottom line results

Enterprise-wide Performance Indicators

Tetra Tech uses the following metrics as indicators of our overall economic, environmental, and social sustainability:

  • Revenue Growth – as documented in the company's annual report
  • Headcount Growth – as documented in the company's annual report
  • Carbon Emission Reductions – normalized per associate

Specific Performance Indicators

Specific performance metrics have been established for Tetra Tech's centralized services, as described in the table below. The table identifies each metric and explains its significance for improving Tetra Tech's sustainability. The table also includes ongoing policies and practices being implemented by each corporate service to enhance our company's sustainability. These metrics are used to measure our progress in annual reporting on the program.

Real Estate
Footprint (square foot/associate)
Improving the efficiency of space utilization reduces energy consumption and utility costs. This metric addresses environmental and economic sustainability.
Information Technology
Percent of Computers Less than 5 Years Old
Measuring how current our systems are provides an assessment of the energy efficiency of our IT systems. This metric addresses environmental and economic sustainability.
Percent of Tetra Tech on Tetra Linx
With implementation of Tetra Linx, Tetra Tech's payroll, procurement, expense accounting, and other administrative processes have been transferred to a paperless format. This metric addresses environmental and economic sustainability.
Number of IT System Servers per Associate
Reducing the number of servers in our IT network translates into reduced capital costs, maintenance costs, and energy consumption. This metric addresses environmental and economic sustainability.

In addition to the specific metrics listed above, IT Services implements the following policies and practices in its operations:

  • Replacing desktop CRT monitors with energy efficient LCD monitors
  • Leveraging our national imaging services contract for more sustainable products
  • Evaluating multi-use systems (copy, print, fax, and scan) to reduce equipment needs
  • Installation of "sleep mode" software on all Tetra Tech computers
Health & Safety

Improving Health and Safety Performance and Tracking
Health and safety is the most important component of Tetra Tech's duty of care to its employees.

Health and Safety Services implements the following policies and practices in its operations:

  • Online health and safety reporting
  • Sharing training resources
Human Resources
Number of Promotions from within Tetra Tech
This metric addresses social and economic sustainability.
Training per Associate
This metric provides an assessment of Tetra Tech's investment in our employees. This metric also addresses social sustainability.
Certifications per Associate
Encouraging and supporting our employees in obtaining additional credentials allows Tetra Tech to better serve our clients and to prepare for meeting the demands of new and more complex challenges. This metric addresses social sustainability.

In addition to the specific metrics listed above, Human Resources implements the following policies and practices in its operations:

  • Annual Community Service Award promoting social sustainability
  • Human Resources business operations and hiring processes are paperless
  • Reduced use of print advertising
  • Each new operating unit acquisition is converted to current paperless HR practices
Shared Services
Office Supply Costs per Associate
This metric corresponds to the consumption of office supplies such as paper with the goal of improved efficiency in use of office supplies. This metric addresses environmental and economic sustainability.
Number of Overnight Courier Shipments per Associate
By reducing the number of shipments, we avoid significant costs, reduce emissions related to shipping methods, and save resources used in shipping materials and packaging. This metric addresses environmental and economic sustainability.

In addition to the specific metrics listed above, Shared Services implements the following policies and practices in its operations:

  • Online stationary templates and on-demand stationary printing
  • Online business card ordering
  • Centralized imaging equipment procurement (under development)
Business Development Support/Communications
Use of Electronic Marketing Instead of Print Media
With increased use of electronic marketing materials instead of using print materials, we achieve reductions in paper use, printing costs, emissions stemming from mailing. This metric addresses environmental and economic sustainability.

In addition to the specific metrics listed above, Business Development Support and Media and Communications Services implements the following policies and practices in its operations:

  • Using recycled paper for internal and external publications
  • Development of print-on-demand brochures
  • Development of electronic brochures
  • Development of conference-specific websites for information sharing