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. r <br /> OCT-12—'93 09:�8 [D:G TY OF EUERETT PLRIJ TEL N0:206-259-8742 q7}8 P�E ; <br /> i' � <br /> l� ' <br /> '; i <br /> Loron 8 Dlanne Jensen � <br /> Pags 4 � � <br /> The Soil Survey oT Snohomish County maps the soil on the subject site as � ! <br /> Alderwood-Everett gravely sandy loams, 25 to 70 percent slopes. For thia soil ' <br /> type, the survey states on page 12 that "runoff is rapid, and the hazard of water �> �! <br /> erosion is high...steep yerding paths, skid trails and firebreaks are subject to : <br /> rilling and gullying unless adequate water bars are provided or they are ,� ; <br /> protected by plent cover." The City's adopted Hazard maps show your site as . ; <br /> . having a very high potential for landslides. <br /> eecause of these hazardous site conditions, the City's ESA ordinance prohibits � <br /> , <br /> the clearing af steep slopes on yours and other properties with similar slope <br /> conditions. Intact mature native vegetetion provides the best type of protection ; <br /> for these erosive soils and steep siopes. By completsly removing the native � . <br /> cover, the potentlal fo� erosion, slumping and poasibl� lost of bulldabls <br /> lands on your props�ty has besn substanti�lly Incn�a�d. It will take s <br /> decades to re-establish the native vegetetive cover that existed on the site prior ' ; <br /> to logging. <br /> However, it is not recommended that the cleared slopes be supplemented with � ° <br /> either edditionai plantings or hydroseeding becauae the majority of the � ; <br /> understory vegetation and litter/duff has been left intact. Under these � ` <br /> c i r c u m s t a n c e s t h e g r o w t h o f n a t i v e plants from seeds and root stock will occur <br /> rapidlY. Attempts to supplament this prowth with plantings on the staep slopes : <br /> will only increase slope disturbance, with the grasses in hydroseed mixtures { <br /> impeding the growth of native specias. Therefore, It is recommended that the <br /> majority of this cteared area be IeR undisturbed with the following measures •3 <br /> undertaken, � <br /> 1) Area 1 (Refer to Attached Map). Remove the downed trees and ' <br /> associated wooden debris from the creek channel and at the base of the <br /> slope on the south sida of the creek. The downed logs and vegetation <br /> outside of this area shall be left in place; this downed vegetation is <br /> essential to the recovery of the forest, providing nutrients and organic � i <br /> material essential to the growth of new plants. 7he trees and large debris , <br /> to be removed shall be flagged prior to removal, with approval of said � ; <br /> flagging provided by Ciry staff. Removal of vepetation shall be done up �, i <br /> one skid track in order to minimize further disturbance to the stope. ,� ' <br /> 2) Aroa 2. Upon completion of removal af debris from Area 1, remove ell ; ` �. <br /> logs from this level area. Install a silt fence and a permanent wood fence 3 : <br /> (split rail or other eccepteble design, 4 feet in height) at a point 25 feet 4> 1 <br /> away from the top of the slope (Less then 25°�). All areas to the north or <br /> landw8rd of the silt fence shell be hydroseeded The 25 feet north or � s <br /> seaward of the ailt fence shall be allowed to primarily revegetate naturally � °, <br /> t <br /> a' <br /> ' <br /> i <br /> ; <br /> � , <br />