OWP will be closed from 4:00 pm on Friday, December 20, 2024, until 8:00 am on Thursday, January 2, 2025, for Winter Break.
(All times are PST.)
For students in Canada: Due to the ongoing Canada Post strike, please use UPS or FedEx to return your scantrons for grading. You may take your exams online even if you received paper exams.
If exams are submitted: |
Course certificates will be mailed: |
By December 13th |
By December 20th |
After December 20th |
Early January |
Please note: Postmark dates will not be honored.
Water and Wastewater Terms Beginning P
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
pan test
The pan test measures how uniformly wastewater is being distributed over the media of a trickling filter. Place pans at different locations on the filter surface. After a period of time, measure the water in each pan using a graduated cylinder or similar device. Each pan will have a similar amount of water if the wastewater is evenly distributed over the trickling filter.