Otto Rosenau & Associates, Inc. is a geotechnical and materials testing laboratory. We offer assessment for a wide variety of industrial, commercial, municipal, and residential projects ranging in size and scope. We work with numerous public and private agencies, organizations, and businesses to assure standards and specifications are met and exceeded. Call us now!

Western States Soil Conservation. 29 Years + in business. We perform boring, environmental, geotechnical, mud rotary, auger, HQ, and NQ drilling services all across Oregon, Washington, Idaho and Northern California. We also offer land clearing and other excavation services.