Meet the Team

Aimee Krieger

President

Program Specialist at the Beaverton Swim Center. Aimee is accustom to having eyes rolled at her (mostly by her sons) and does not shy away from goofy fun and time with people she cares about.

Colin Perkins

Past President

Pool Operator at the Tualatin Hills Aquatic Center. Colin will always have your back, though he does have an aversion to having his picture taken.

Melissa (Mayer) Van Altvorst

President Elect

Office Tech at the Tualatin Hills Aquatic Center. Melissa is a wrangler of crab as well as two active, wonderful children.

Brenda Peterson

Treasurer

Office Tech with Maintenance Operations. Brenda is passionate about her family, softball, and animals.

Hanna Dörnhofer

Secretary

Community Engagement Park Ranger at the Tualatin Hills Nature Center and with Nature & Trails. Hanna loves animals and plants, meeting new people, and is always down to talk union stuff. She’s known for playing pranks on her coworkers and bringing flowers back to the office.

Casey Jennett

Representative

OSEA Representative for THPRD since Fall 2025