Since 1993 H&K has provide geotechnical and geoenvironmental engineering, materials testing and special inspection, geology, hydrogeology, and SWPPP services throughout the western United States. H&K’s professional staff are registered as Professional Geologists, Civil Engineers, Engineering Geologists, Geotechnical Engineers, Hydrogeologists, Professionals in Sediment and Erosion Control, and Qualified SWPPP Designers and Practitioners. We maintain a deep bench of qualified engineering field and laboratory technicians, and our laboratories are accredited by DSA, Caltrans, CCRL, AASHTO, ASTM, and the U.S. Army Corps of Engineers.