There is not currently any stormwater runoff treatment infrastructure between SE 249th Street and SE 256th Street along Witte Road before stormwater is discharged into either the south or north fork of Jenkins Creek. The City of Maple Valley has been awarded a $75,000 grant for the design of stormwater treatment retrofits from the Washington State Department of Ecology to reduce pollutant loading to Jenkins Creek.
This project will design stormwater treatment retrofits for the existing Witte Road and Lake Wilderness Golf Course access road, as well as from the improved roadway width once the Witte Road Corridor Improvements have been completed for this section of Witte Road. The stormwater collection and treatment system will be designed to integrate with the completed Witte Road Improvement Project.
Design is planned to be completed in 2019 and the City will apply for construction grant funds from the Department of Ecology in the 4th quarter of 2019. Construction is planned for summer of 2020.
The City is holding an Open House to discuss the alternatives for this project on July 16, 2019 at 5:00 pm at Lake Wilderness Golf Course Grill and Banquet Hall.
For more information and comments, please contact Halley Kimball, PE, SWM/NPDES Program Manager at firstname.lastname@example.org or 425-413-6646.