Farallon Consulting L.L.C. Share: Environmental Engineering Farallon Consulting L.L.C. Visit Website 975 5th Avenue Northwest Issaquah, Washington 98027 (425) 295-0800 About Map About With offices in Washington, Oregon, and California, Farallon provides a wide array of environmental consulting services to clients throughout the West Coast and beyond. What's Nearby? Distance: 5 10 15 20 25 50 mi.