Galvanizing Industry Storm Water Treatment Technology Evaluation and Rainwater Harvesting Integration

Portland, OR and Tualatin, OR

Daniel Scarpine provided technology feasibility, pilot test, design, and permitting services to Galvanizers Company (Portland, Oregon), and Pacific States Galvanizing (Tualatin, Oregon).

Key Services

  • Conducted comprehensive site assessment including field locates and pollutant hotspot identification
  • Prepared innovation design to use contaminates storm water runoff for process water make-up
  • Conducted bench and field tests incorporating media filtration, ion exchange, EC, and membrane concentration
  • Conducted particle size distributions and suspended solids analysis for specification of screening/ filtration devices
  • Prepared design for storm water handling, water storage, and treatment system design


  • Both facilities are meeting current and proposed DEQ storm water benchmarks
  • Rainwater harvesting design results in reduction of potable water and lowers storm water treatment costs