With more than 25 years of experience, over 500 employees, and 120+ crews operating across the United States, TEC provides turnkey solutions including erosion and sediment control, stormwater management, site compliance, hydroseeding, site remediation, and environmental services. Why Join TEC: As the nation's largest and most experienced erosion control contractor, TEC offers the opportunity to lead a growing multi-branch operation, develop high-performing teams, and make a direct impact on business success.