Friends of Marymoor Park

April 27, 2016 Meeting Summary

-- see also the March 23, 2016  meeting summary

1) Introductions – Norah Robinson, King County Parks; Andy Boland, Marymoor Facilities; Sewer Project Team:  Jennifer Kauffman, Robert Gilmore, Monica, Alison Spiker, engineer; Michael Hobbs, Eastside Audubon, FOMP Secretary; Shane Berry, AEG Live;  Ollie Oliver, birdwatcher, neighbor

2)  Lake Hills and NW Lake Sammamish Sewer Upgrade Project

King County is upgrading and updating the regional sewer service in Redmond. The sewer line starts south of NE 24th St. at the Bellevue/Redmond boundary, and runs north through neighborhoods to Idylwood Beach Park, where it then follows under and/or adjacent to West Lake Sammamish Parkway all along Marymoor Park, and then follows the Sammamish River Trail to NE 85th St.  Sewage goes north to the Brightwater treatment facility in Woodinville.  It is a gravity line, so the alignment needs to stay pretty much where it is. The old lines were built in the 50’s – 70’s, with the oldest having well exceeded their design lifetime, and the newer sections needing repairs.  Need to replace old sewer and increase capacity – 4.5 miles from southwest of Idlewood up to Redmond City Hall.

Project website 

They are doing community outreach and smaller, localized meetings to keep residents apprised of the project.

Schedule:  Design and permitting – 2016-2018, with construction to take aroud 3 years starting mid-‘18. Timing of construction past Marymoor still TBD.

Initial Phase:  Upcoming field work – beginning May 2016

Surveying, utility locations, (July-August) geotechnical evaluations – soils and groundwater. Small rubber-tracked boring rig, accompanied by Bobcat. Borings themselves would be off to the side of the trail. Drilling cores 15-30 feet deep, putting in groundwater monitoring wells. Equipment will move along the trail, but work and overnight storage will be off-trail.

Construction:  Will use open-trench construction, working in stages. Some sections south of Marymoor will be in-roadway work. Along Marymoor, and north to the City Hall, the pipe follows or underlies the trail. In spots they will use trenchless construction – current thoughts are to use trenchless under the roadway at the Marymoor Way crossing.

Construction will take place typically from 7 a.m.-5 p.m., but they can sometimes get permits to work later.

Discussion:  Norah will want to know about trail closures well in advance.  Many Fun Runs, etc., have annual events that start/end at Marymoor and use the trails to the north. Trail events will be affected.  Jennifer indicated that if trail detours onto WLSP are necessary, that will require permitting early in the project.

Norah stressed that during the summer, lane closures on WLSP and on Marymoor Way would be VERY problematic, i.e. for concerts.

The project team is aware of cultural resource issues. Most of the alignment will be in existing disturbed soils, but they will be doing surveys, etc. as required.

Michael offered to put informational links onto the Friends of Marymoor Park website, directing people to the official sites.

3) International Drone Day: May 7

Worldwide day of events about drones – technical/scientific usage, racing, recreation. Promotes drones, but with a heavy emphasis on rules and regulations. VERY recent FAA ruling requires all owners of drones and model aircraft weighing over 0.5 lbs to register with the FAA and to tag all aircraft with identifying codes.

2016 event planned at Marymoor to be located in the McNair field (parking in Lot B). As Marymoor is already a place where people bring their drones, this is a great opportunity to explain Marymoor Park rules covering drones. (Only allowed at the R/C field, and only by MAR/C members)

Free event, with classes, races, demonstrations.

Norah does not want to have this as an annual event at Marymoor.

4) CIP/Project/Facilities Updates:

a) Birdloop – With permanent solutions for replacing the pavement between the East Footbridge and the eastern end of the boardwalk not possible in the 2018 time frame, there’s concern about safety of the crumbling asphalt.  We discussed with Andy the possibility of removing the worst of the pavement and replacing with gravel as a stop-gap.

b) Noxious weeds - Weed crew completed the spring 2016 treatment of the Canada Thistle around the bird loop.  Troy was happy to see a great reduction in the middle of the meadow, thought they still have a challenge in the south end.  After nesting season, Troy will check back in with Eastside Audubon and work with available staff to do a walk through with shovels and conduct a manual removal about the same time the thistle is blooming.  Troy also told Glenn they would treat the blackberries on Snag Row and plan to finish that up quickly, and also touch up the poison hemlock control for the spring.

c) Community Gardens – Irrigation project complete. Path project will hold off until after the main season.

d) Park Drainage – asking for larger culverts for the entrance to Lot K. Existing ones small, often get clogged. Water backs up into Lot K, damaging pavement – Funding request for 2017-18

e)  Clise Mansion – wood sill restoration work, painting done on Clise.  Fixed some wall water damage.   Still working on some damaged windows (age) and some minor vandalism.

f) Concert Venue Seating – Concrete walkway work starts Monday.  New seating pad will be installed in Fall

g) Shop yard fencing - Fencing approved but not yet purchased

5) Other:

Marymoor Concerts:  AEG Live will host a Community Meet-n-Greet, Thursday May 26th   Will highlight this summer's concert series.  There will be food, beverages, and giveaways.  This is an opportunity to find out about the shows, ask questions, raise concerns.  RSVP to ODAVIS@AEGLIVE.COM , 206-477-7275

Notable upcoming events:

6/3 – Jerry Baker Memorial Velodrome – Dedication ceremony 6:30 pm prior to Friday racing – same day as big Lumineers Concert at 6:00 p.m. Velodrome people should use East entrance/exit.

6/6-6/13 Women's PGA parking.  Monday/Tuesday low volumes. Wed/Thurs – ramping up. Fri/Sat/Sun – up to ~5000 cars max., using every parking lot except lot D. Routes in and out of park will be limited intermittently throughout the day.  Monday is a rain-delay extension date.

Next Meeting: May 25, 2016, 7:00 p.m. at the Art Barn

These notes do not constitute an official record of the meeting.  They may have inaccuracies and omissions.  If anyone has any complaints about the content of these notes, they should direct them to Michael Hobbs at, and he will endeavor to correct them.


Home | Mission | Members | Events | News | Maps | Getting There | Contact Us | Links | Search
Meeting Summaries |
Wildlife at Marymoor | Birding at Marymoor Park

Problems, comments, suggestions?  Email the FOMP webmaster at