pretreatment screen
Pretreatment screen for a residential raingarden. Photo courtesy of Katherine Sullivan.

NOTE: It is strongly recommended that pretreatment devices be certified through Washington State's TAPE or New Jersey's NJCAT programs, be modeled using SHSAM, or follow guidance in this manual for vegetated filter strips and forebays.

Screens provide a very specific and limited function of collecting large pollutants from stormwater runoff at defined sites along the stormwater flow network. Screens do not provide volume reduction, peak flow reduction, sedimentation, infiltration, filtration, sorption and biological processes.

Pages in category "Level 3 - Best management practices/Pretreatment practices/Screening and straining devices"

The following 2 pages are in this category, out of 2 total.