2909 WHITEHORSE TRL 2016-08-15 - Laserfiche WebLink

I�A��i��* sl`_L ^ "�r✓ August 5, 2004 International Forestry RECEIVED AUG 0 9 2004 C 0 N S U L T A N T S I N C. OPERATIONS & 11232 120`h Avenue NE #201 • Kirkland, WA 98033 • USA A�NTENANCE Mr. Larry Cram City of Everett, Street Department 3200 Cedar St. Everett, WA 98201 Re:Trees South of Whitehorse Road, Everett, WA Dear Mr. Cram: At your request, I have examined certain trees standing in a native growth area immediately southeast of Whitehorse Road and Northwest of Broadway in Everett Washington. The purpose of the examination was to determine the hazard rating of the subject trees and suggest remedial action if appropriate. The trees were examined on August 5, 2004 by Tom Hanson. Description The site is an undeveloped area separating the Whitehorse area from busy Broadway Ave. below to the southeast The total area is approximately 50-feet by 175-feet or about 9,000 square feet. It is steep with sandy/gravelly soils. The majority of the trees on the site are white poplar (Popu/us a/ba) with � few Douglas-fir (Pseudotsuga menziesii). There is evidenoe of soil unstabi(ity (pistol butts), particulariy in Douglas-fir near Whitehorse Road at the top. The Douglas fir elsewhere, are generally suppressed, leaning or pistol butted. The poplar are densly packed near the bottom ofi the slope. (Th�se trees typically grow in wet areas such as ditches or slope bottoms). The root systems of the poplar have buckled the pavement on Whitehorse on more than one occasion. White poplar are listed as invasive species in several publications. They have very shallow and aggressive rooting systems and the wood is brittle and prone to breakage. Recommendations I am suggesting that this area be revegetated with native species more suitable to the soils �nd less maintenance intensive. In order to prevent erosion, the stumps and roots should be left in place until new plantings occupy the site. Removal and eradication of the poplar will require some diligence as cut stumps and residual roots may spraut if simply cut and left on site. Post cutting treatments should include a topical treatment of USDA approved herbicide such as Garlon 4 to prevent sprouting. (See label instructions). Blackberry and grass control will also be necessary. On this site trees could be grouped and shrubs planted over the entire site pleasing entrance to the city, landscaping for the fesidences on Whitehorse reduced maintenance on the roadway. I suggest 3Q-40 3-4-foot tall trees in about 500 1-gallon size shrubs. (425) 822-5915 • Fax (425) 822-5975 • www.inforestry.com to create a Road and groups and