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.
Sustainability of Office Space
Evaluating the sustainability of potential office spaces allows Tetra Tech to select business locations that are both cost-effective and include features that reduce the environmental impact of our operations. Sustainable spaces often include features that improve the quality of the space for employees. This metric addresses environmental, economic, and social sustainability.
Information Technology
Percent of Enterprise Data Stored in the Cloud
Cloud-based storage services translate into reduced capital costs, maintenance costs, and energy consumption. 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:
  • Leveraging our national imaging services contract for more sustainable products
  • Evaluating multi-use systems (copy, print, fax, and scan) to reduce equipment needs
  • Installing sleep mode software on all Tetra Tech computers
  • Licensing Microsoft Skype for Business as part of standard desktop suite, providing integrated IM, video, and audio communications and reducing need for direct dial telephony or conferencing services
Health & Safety
Occupational Health and Safety Awards and Recognition
Recognizing operations that receive the U.S. National Safety Council Perfect Record Award reinforces Tetra Tech’s strong safety culture. This metric addresses occupational health and safety practices.
Executive Leadership and Oversight
This metric demonstrates the commitment of senior leadership across the company to provide additional certifications and training to strengthen our Health & Safety Program. This metric addresses occupational health and safety practices.
Safe Work Performance
Working safely is every employee’s responsibility and is a part of Tetra Tech’s strong safety culture, which extends from executive leadership to each employee in the office or the field. This metric addresses occupational health and safety practices.
Reducing Lost Workday Incident Rate (LWDIR) and Total Recordable Incident Rate (TRIR)
Our industry tracks safety using LWDIR and TRIR metrics. Our goal is to continuously improve these metrics year-over-year. This metric addresses occupational health and safety practices.
Human Resources
Document Automation
Tetra Tech increasingly has moved to automate the documentation generated from hiring and managing employees, which greatly reduces the amount of paper used and improves document management. This metric addresses environmental sustainability.
Recruitment Activities Focused on Increasing Diversity
Expanding the number of outreach events, partnerships, and advertisements to recruit the most talented individuals strengthens Tetra Tech’s workforce. This metric addresses diversity and equal opportunity.
Leadership Training
Preparing our future company leaders through leadership training is a cornerstone of Tetra Tech’s succession plan. Tetra Tech’s executive leadership created and leads the company’s corporate leadership development program to support this effort. This metric addresses training and education.
Shared Services
Use of Recycled Office Supply Products
This metric measures the percentage of recycled office supply products purchased through Tetra Tech’s corporate office supply partner. This metric helps promote and educate employees about recycled products and their impact on the environment. This metric addresses environmental sustainability.
Number of Overnight Courier Shipments per Associate
This metric measures the number of overnight shipments made per associate through our corporate courier partner. By reducing the number of overnight 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.
Corporate Business Development Support/Communications
Use of Electronic Marketing Materials Instead of Print Media
With increased use of electronic marketing materials instead of print materials, we achieve reductions in paper use, printing costs, and emissions stemming from mailing. This metric addresses environmental and economic sustainability.
Sustainability of Printed Media
Concurrent with efforts to reduce the volume of our printed materials, we are improving the sustainability of corporate marketing materials that are required to be printed. This metric measures the percentage of printed materials produced by corporate marketing that include recycled content and are printed on Forest Stewardship Council-certified paper. This metric addresses environmental sustainability.
Sustainability of Events and Conferences
This metric encourages implementation of sustainable practices for our corporate-sponsored internal events and corporate-sponsored tradeshow and event presence through the use of our Sustainable Event Checklist. This metric addresses environmental and economic sustainability.
Corporate Social Responsibility
Science, Technology, Engineering, and Mathematics (STEM) Program
This metric aims to increase Tetra Tech’s contributions to our local communities by sparking interest in STEM fields. By supporting and implementing STEM activities and programs in the communities in which we live and work, we are helping grow the next generation of innovators and problem solvers. This metric addresses social sustainability.
Employee Bike to Work Week (BTWW) Challenge
Through an increase in employee participation in Tetra Tech's Annual International BTWW Challenge, we are working to decrease our impact on the environment. Each May, employees across Tetra Tech forgo other methods of transportation and bike to work for a week, helping reduce fuel used and greenhouse gas emissions released and introducing employees to this sustainable commuting method. This metric addresses both environmental and social sustainability.
Employee Involvement in Financial and In-kind Giving
This metric measures Tetra Tech’s contribution, both financial and in-kind, to the communities in which we live and work through support for local charities. By maintaining our employee engagement in these local giving opportunities, we are helping to improve our communities. This metric addresses social sustainability.
Employee Involvement in Volunteering
In conjunction with financial and in-kind giving campaigns, our employees volunteer their time to provide support to their local communities, from mentoring to local cleanup events. Through this hands-on engagement, our employees are furthering their support for their local communities. This metric addresses environmental and social sustainability.