Teri Raasch is a Design Manager at Carollo Engineers, with over 9 years of experience on wastewater projects involving planning, design, and construction management of headworks projects. As a rising technical process leader at Carollo, she participates in concept development and technical review for headworks projects across the country. In this role, she is exposed to success stories, lessons learned, and misinterpretations about headworks. She has also personally designed several headworks projects with state of the art grit removal systems. These projects have utilized a simplified method for interpreting grit characterization studies in order to establish plant-specific design criteria.