Tim Croll has joined HDR as a senior solid waste planner after spending 23 years working in solid waste for the City of Seattle.
Tim Croll holds a bachelor of science degree in geology and mineralogy from The Ohio State University and a masters of science in geological sciences from the University of Washington.
Joint Water Commission recently awarded a $25-million water treatment center expansion contract to Slayden Contractors to make safety, maintenance and capacity improvements at the water treatment facility in Forest Grove, Ore.
The project will include two separate construction packages with the first being a series of safety and maintenance improvements for existing structures, and the second being an 85 million gallons per day increase to the facility’s water capacity in order to meet the demands of Washington County.
The publication addresses shop drawings, design, cable materials and coatings, shipping and receiving, fabrication, erection, post construction issues and inspections.