PLSA was founded 40 years ago with its office presently at 1120 West Lincoln Avenue in Yakima Washington. The firm continues its tradition of providing professional engineering and surveying services throughout the Central Washington area.

The mission of PLSA is to provide quality professional engineering and surveying services tailored to the client's need.

PLSA is dedicated to creatively serving our clients in a representative and cost effective manner while providing challenging and rewarding experiences for our employees.

In all our engagements, regardless of size, we strive to represent our client in accordance with the highest standard of the engineering and surveying professions.