Valisa is a Environmental Regulatory Specialist with more than 20 years of experience providing environmental...
ESA partners with clients and communities to drive sustainable, resilient, and equitable solutions that shape a better world.


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News & Ideas
November 17, 2023
November 14, 2023
ESA is pleased to sponsor, present, and exhibit at the 2023 Headwaters to Ocean (H2O)...
November 10, 2023
ESA is pleased to welcome Michael Chidley as Director of Operations in the Northwest Region....
October 31, 2023
If the topics at the 6th Annual Western Groundwater Congress in Burbank are any indication,...
October 30, 2023
While Lake Tahoe’s crystalline azure has lasted for eons, the changes wrought by past land...
October 26, 2023
The Federal Water Pollution Control Act of 1948 was the first major U.S. law to...