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HomeMy WebLinkAboutPark 2018-11-14 Handout Distributed at Meeting - South 128th Street Parcel NamingRiverton Creek (E Fork) Natural Area Parcel, 128th St. - project update November 2018 Summary Progress continues beautifully along the East Fork of Riverton Creek in the new 128th St. parcel. Several highly productive (and fun!) volunteer work parties have taken place and much has been accomplished, particularly in removing invasive species and also trash. City staff has approved the Concept Plan and the two large, leaning cottonwood trees have been cut down. The knotweed is beginning to die thanks to the city's significant investment in hiring a professional crew to injected with an aquatic safe herbicide. Much of the stand should degrade but it will require ongoing injection for several years, likely in much smaller doses. The site is very popular with families due to the attractive nature play open space along the charming stream and amongst the large cottonwood trees. Neighbors are enthused about the work as well. P 1(5) CE uGG�CAR( LF CoNc- SHR3 . C, L ©b >G�n N 0 r4 1ZoP. rm. A^`t'CJD Priorities for Forest Steward & Volunteers ^ Remove significant invasive species: blackberry, ivy and bindweed ^ Remove secondary invasive species: holly, cherry laurel, butterfly bush and hawthorn ^ Mulch paths and open space with wood chips (need many more chips) ^ Plant native species ^ Distribute dried organic material to deter foot traffic around native plants ^ Consult with riparian ecologist Onany recommended oreekSiderestoration & conservation strategies ^ Schedule more work parties ^ Conduct neighborhood outreach toincrease volunteer base and project avv8renese Arf'oD Py'CJr't'eS for City ^ Process cottonwood debris onsite (penciled infor 11/2Dincoordination vvForest such as cutting log rounds into stump round sizes, moving them around the site with tractor oonecessary, chip some ofthe branches (leave some) ^ Direct many more wood chips tosite ^ Continue tomanage elimination Vfsignificant knotweedatonda ^ Research bridge options and costs ^ Have soil tested for contaminants ^ Finalize name &prepare for adding park eignage ^ Place rocks w/equipment City Budget Items TREE REPLACEMENT (BY CODE) DUE TO COTTONWOOD REMOVAL Options include the line of conifers along the neighbor's fence line to the East called for in the concept plan- particularly cedars a they retain lower leaves for screening purposes. These should also be of a significant starting size. However, this area is highly contaminated with knotweed that is still in the process of dying, thus this site may not be available yet. Determine required number of trees to be planted and consider starting with a few in other locations until the fence line is available for the screening trees to be planted. GATOR BAGS Replacement trees Year-round stream provides excellent water source and can be filled by volunteers. One/replacement tree @ $22.99ea + tax Treegator Original Stow Tease Watering Bag for Trees Parks Commission Budget Request Items NATIVE PLANTS The site's Forest Steward is donating hundreds of dollars of their personal native plant credits built up from the Homeschool Stewardship Squad's volunteer hours over the years at the King Conservation District's Native Plant Cooperative Nursery. However, some plants will still need to be purchased as not every species is available from KCD's s credit stock (particularly tough and hardy sword ferns, but also including vine maple, salmonberry, low OR grape, hazelnut, etc.). The precise plant list, quantities, sizes & prices are dependent on nursery availability at the time of purchase and also the funds available. Hundreds of plants are already needed to begin phase one of native planting and many options exist. The majority of the natives will be small- from plugs and 4" pots to one -gallon, plus a few larger -sized trees and shrubs for durability in high -traffic areas. 1 /2 TO 1 MAN ROCKS LANDSCAPE ROCKS - (1/2-3 MAN ROCKS) For creating a naturalistic seating circle and/or a series of rocks children can play upon. Also useful for defining naturalistic planting islands with room to play around- ie a cluster of natives such as sword fern, a salmonberry and vine maple with a rock or two and wood chips around them. The larger rocks in this photo depict 2-3 man rocks which are also $90/ton. The majority of the rocks should be too heavy for the public to move (esp. children) so we will need City assistance with placing rocks. Qty 3 tons delivered plus tax = $398.00 http://ecimaterials.com/products-and-services/products/1-2-to-1-man-rock/ deemattee. They can be TO ckeries and for rock walls. PICKED UP 90.00 per ton DELIVERED 90.00 first ton, 90.00 each dditional ton P 4(5) `BEFORE' PICTURES P 5(5)