PLSA has a legacy of successfully delivering top quality performance, within budget and tailored to the individual needs of the client. We are a diverse firm with expertise in civil engineering, geotechnical engineering, land surveying, land planning, environmental services, materials testing and construction quality control. Our clients include governmental agencies, school districts, churches, utility districts and a great number of private sector developers throughout the State of Washington. During the last 50 years, PLSA has completed thousands of projects for our clients. PLSA has one primary office located in Yakima, Washington and is an Equal Opportunity Employer completely compliant with governmental regulations.