Providing professional engineering services using the best of traditional and modern engineering tools, 4 Seasons Engineering, Inc., specializes in civil engineering services for commercial and residential construction, services custom-fit to your needs. 4 Seasons Engineering, Inc. is a community-recognized and -respected design and consulting civil engineering firm excelling in a broad range of innovation, technical and professional services. The company is owned and operated by the husband/wife team of Jay and Donna Petersen, both registered Professional Civil Engineers in the State of Washington. Our current staff consists of three full time professional engineers. Serving Clallam and Jefferson Counties in Washington State since 1994.