04-0180 Stormwater Design 020306
City of Yelm
Community Development Department
105 Yelm Avenue West
P.O. Box 479
Yelm, WA 98597
February 3, 2006
Bob Tauscher
Jerome W. Morrissette and Assoc.
1700 Cooper Point Road SW #B2
Olympia, Washington 98502
RE: Ridgeline Middle School - SPR-04-0180-YL
Stormwater Facility Design
Mr. Tauscher:
This letter is to follow up all the speculation and discussions that have transpired due to the flooding at the Ridgeline Junior High School and the adjacent properties. I have met
with the project general contractor, Ed Wiltsie of your office and even had a discussion with Alan Burke and Erling Birkland at City Hall about the flooding of the adjacent properties.
After Ed Wilsie and I met with the adjacent owner, it was Ed’s recommendation that the School District construct a ditch to drain the water from the up stream drainage areas to the onsite
stormwater pond. After this excavation was completed the water on the adjacent property was lowered approximately 8” overnight. This has been the only action that has taken place by
the project owner or their representatives to date, that the city was requested to be involved with.
After reviewing all the information and watching the site conditions for the passed week it appears that the design of the western portion of the school site has affected the adjacent
property owners and the high ground water movement of this area. These conditions were not addressed in the design of this site and are also the same conditions that we had to address
with the installation of the STEP tank. This condition needs to be addressed before additional work may commence in this area or any other stormwater is directed to this area. Please
contact me to arrange for a meeting between the City and all parties from this project.
If you have any additional questions or comments please do not hesitate to call or contact me at jimg@ci.yelm.wa.us.
Community Development Department
Respectfully,
Jim Gibson PE
Development Review Engineer
Cc Alan Burke and Rocky Birkland, Yelm Schools by email