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HomeMy WebLinkAboutPermit PL12-022 - MACHINE TOOLWORKS - TREE PERMITMACHINE TOOLWORKS 14600 INTERURBAN AVE S P L 1 2-022 L 1 2-021 TREE PERMIT City of Tukwila Jin7 Haggerton, Mayor Department of Community Development Jack Pace, Director SENT VIA EMAIL Risa Anderegg <rnderegg@machinetoolworks.com> April 25, 2013 Ms. Risa Anderegg 14600 Interurban Ave S Tukwila, WA 98186 RE: Second Technical Comment Letter —Revision to approved shoreline tree clearing permit Machine Toolworks Tree Clearing Permit L12-021, PL12-022 Dear Mr. Anderegg: The City has received your request to revise your approved tree clearing permit. Your revision request has been reviewed and staff has the following comments. The proposed planting plan shows the removal of seven trees (#1901-1907). These trees are located adjacent to your building along the building's north and west sides. All of these trees are10-16" in caliper according to the mitigation schedule you provided. Trees of this caliper require a replacement ratio of 6 trees for every tree removed according to TMC 18.45.080. The replacement schedule used in your submittal is TMC 18.54.130 which is not used for trees in the shoreline jurisdiction. The number of trees that needs to be replaced for removal of these seven trees is 42 trees. The Red Maples in your parking lot were recently topped. Tree topping is considered the same as tree removal under TMC 18.44.080 139 and requires replacement. The Red Maples are located in the parking area and cannot be replaced at a higher ratio within the limited planting space provided in the parking lot. These trees should be replaced at a one to one ratio provided the trees are 2" caliper with a broad canopy (no columnar trees) that will provide shade the parking area. The city will need to review and approval the species you propose for tree replacement. The revised planting plan you provided includes 20 replacement trees. Three of these "trees" are willow stakes which are depicted requiring the largest land area of any tree on the plan. The stakes should be planted at a density of three stakes every three feet and should be planted at an angle into the side of the bank. The plan should be revised with the stakes planted along the bank slope and additional trees planted where the stakes are shown. The plan also left off the shrubs and ground cover that was included in the previously approved plan. The City is willing to count the willow stakes as trees to help you meet the mitigation requirements. If your landscape architect is not able to design a plan that accommodates the required 42 trees (plus the six parking lot trees), then the remaining trees will need to accounted for by either planting in an approved shoreline location off site or paying into the tree mitigation fund at a rate that will include the cost of the plant material, site clearing, soil preparation, replanting, delivery, removal of materials and waste, and labor. Your landscape architect can submit an estimate at a per tree basis for our review. sM Page t of 2 HAComplete projects\PL12-022 Tree Permit\PLl2-022 Tree Tech Comments 2.doc 04/26/2013 6300 Southcenter Boulevard, Suite #100 0 Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 All replanted areas on or off -site will still require soil preparation, mulching, and groundcover. Please provide a revised planting plan and, if needed, a mitigation cost estimate for any plants you are unable to accommodate on your site. Next Steps Your next step is to address the comments made in this letter. Once you have addressed the comments and revised the plans, first send me electronic copies for review. If you have any questions, I can be reached at 206-433-7166 or by email at stacy.macgregor@tukwilawa.gov. Sincerely, Stacy Mac r gor Assistant P1 ner sM Page 2 of 2 04/26/2013 HAComplete projects\PL12-022 Tree Permit\PL12-022 Tree Tech Comments 2.doc April 16, 2013 CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Subject: Revised Tree Clearing Permit We wish to revise our original Tree Cutting Permit Application to include only the trees that are in jeopardy of falling and injuring someone and are a hazard to our building foundation. One tree has already failed and is leaning against another. The tree numbers are #1901, #1902, #1903, #1904, #1905, #1906, #1907 on the attached plan that we are requesting to remove. Please review the attached drawing showing the trees to be removed and the replanting plan. The limited area to the east of our building will not support a replanting as per your requirements and we will be open to discuss off site tree planting as per your Shoreline Master Program statement as follows: 6. If all replacement trees cannot be reasonably accommodated on the site, off -site tree replacement within the shoreline jurisdiction may be allowed at a site approved by the City. Priority for off -site tree planting will be at locations within the Transition Zone. If no suitable off -site location is available, the applicant shall pay into a tree replacement fund. The fee shall be based on the value of the replacement trees and their delivery, labor for site preparation and plant installation, soil amendments, mulch, and staking supplies. My position is that these trees pose and immediate danger of falling and/oor damaging our foundation as described in our Certified Arborist report which you have a copy. Please advise if I need to resubmit an application or we can use the one you have on file. Regards, Machine Toolworks, Inc. Gary Anderegg President 1Page Machine Toolworks, Inc. - 14600 Interurban Ave South Tukwila, WA 98168 - (206) 575-3390 City o f Tukwila Department of Community Development NOTICE OF DECISION TO: Gary Anderegg, Applicant and Owner (gnderegg@machinetoolworks.com) King County Assessor, Accounting Division Washington State Department of Ecology Dear Mr. Anderegg: Jim Haggerton, Mayor Jack Pace, Director August 22, 2012 This letter serves as a notice of decision and is issued pursuant to TMC 18.104.170 on the following project and permit approval. L PROJECT INFORMATION Project File Number: Applicant: Type of Permit Applied for: Project Description: Location: Associated Files: Comprehensive Plan Designation/Zoning District: II. DECISION L12-021, PL12-022 Mr. Gary Anderegg Tree Clearing Permit Request to remove eleven significant trees from the shoreline urban conservancy buffer area; mitigate their removal with buffer enhancement of the property adjacent to the river. 14600 Interurban Ave S L12-021, PL12-022 Commercial/Light Industrial SEPA Determination: The City SEPA Responsible Official has previously determined that this application does not require a SEPA threshold determination because it is categorically exempt. SM Pagel of 3 08/22/2012 HAPL12-022 Tree Permit\NOD.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Far: 206-431-3665 Decision on Substantive Permit: The City Planning Supervisor has determined that the application for a Tree Clearing Permit does comply with applicable City and state code requirements and has approved that application, subject to the following conditions: 1. Replace "Katsura" with Cascara (Rhamnus Purshiana). 2. Correct the planting notes to say that the tree "roots be no greater than 1/1Oth the trunk diameter. 3. Note on the plan set that no substitutions of plants are allowed without written permission from the City prior to installation. 4. Contact Stacy MacGregor, Assistant Planner at 206-431-3670 to schedule an inspection following installation. Additionally, schedule an inspection at the above number one year and two years following installation to verify the landscaping is installed and maintained according to the approved plans. Landscaping is to be maintained for the life of the project. III. YOUR APPEAL RIGHTS The Decision on this Permit Application is a Type 1 decision pursuant to Tukwila Municipal Code § 18.104.010. Other land use applications related to this project may still be pending. One administrative appeal to the City Hearing Examiner of the Decision on the Permit itself is permitted. A party who is not satisfied with the outcome of the Hearing Examiner appeal process may file an appeal in King County Superior Court from the Hearing Examiner's decision. IV. PROCEDURES AND TIME FOR APPEALING In order to appeal the Planning Supervisor's decision on the Permit Application, a written notice of appeal must be filed with the Department of Community Development within 14 days of the issuance of this Decision, that is by September 5, 2012. The requirements for such appeals are set forth in Tukwila Municipal Code ch. 18.116. All appeal materials shall be submitted to the Department of Community Development. Appeal materials MUST include: 1. The name of the appealing party. 2. The address and phone number of the appealing party; and if the appealing party is a corporation, association or other group, the address and phone number of a contact person authorized to receive notices on the appealing parry's behalf. A statement identifying the decision being appealed and the alleged errors in the decision.. 4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of the law in the decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal. Appeal fee per the current fee schedule, additional hourly charges may apply. In addition all hearing examiner costs will be passed through to the appellant. sM Page 2 of 3 08/22/2012 HAPL12-022 Tree Permit\NOD.doc V. APPEAL HEARINGS PROCESS Any administrative appeal regarding the Permit shall be conducted as a closed record hearing before the Hearing Examiner based on the information presented to the Planning Supervisor who made the original decision. No new evidence or testimony will be permitted during the appeal hearing. Parties will be allowed to present oral argument based on the information presented to the Planning Supervisor before their decision was issued. The Hearing Examiner's decision on the appeal is the City's final decision. Any party wishing to challenge the Hearing Examiner's decision on this application must file an appeal pursuant to the procedures and time limitations set forth in RCW ch. 36.70C. If no appeal of the Hearing Examiner's decision is properly filed in Superior Court within such time limit, the Decision on this permit will be final. VI. INSPECTION OF INFORMATION ON THE APPLICATION Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at the Tukwila Department of Community Development, 6300 Southcenter Blvd., Suite 100, Tukwila, Washington 98188 from Monday through Friday between 8:30 a.m. and 5:00 p.m. The project planner is Stacy MacGregor, who may be contacted at 206-433-7166 for further information. Property owners affected by this decision may request a change in valuation for their property tax purposes. Contact the King County Assessor's Office for further information regarding property tax valuation changes. Department of Community Development City of Tukwila sM Page 3 of 3 08/22/2012 HAPL12-022 Tree Permit\NOD.doc City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director STAFF REPORT for TREE CLEARING PERMIT DATE: August 22, 2012 TO: Minnie Dhaliwal, Planning Supervisor, Department of Community Development FROM: Stacy MacGregortant Planner RE: L12-021Tree Clearing Permit for Machine Toolworks, 14600 Interurban Avenue South BACKGROUND: This Tree Clearing Permit application is a request to remove eleven significant trees from the building perimeter of the applicant's property. The property is located within the Shoreline Jurisdiction along the Duwamish River. Tukwila Municipal Code (TMC) 18.44.080 (132) requires a Shoreline Tree Removal and Vegetation Clearing Permit for removal of any significant tree within the Shoreline Jurisdiction. Only trees that interfere with access and passage on public trails or trees that present an imminent hazard to existing structures or the public may be removed from sites without an issued building permit or Federal approval. Included in the application, a certified arborist provided a risk assessment of seventeen trees on the site. The risk assessment recommends that eleven trees be removed for life safety and/or property protection. TMC 18.44.080 (134) has a table listing the tree replacement ratio. According to the table, seven trees 8-20 inches and 4 trees greater than 20 inches in diameter shall be replaced by seventy-four trees. The trees to be removed are located at the building perimeter. Seventy-four trees cannot fit adjacent to the building perimeter and the physical limitations of this area (narrow planting berms) contributed to the failure of the existing trees. The applicant has submitted a plan that mitigates for the loss of eleven trees through shoreline enhancement within the river environment. The plan calls for thirty-five native trees and fifty- two native willow stakes along with native shrubs and groundcover to be planted between the building and the shoreline. The existing invasive and non-native plants will be removed and a view corridor will be created. TMC requires native plant species within the shoreline jurisdiction. One proposed tree is a non-native. The plans have been redlined to reflect replacement of the non-native Katsura with native Cascara (Rhamnus Purshiana). Also, staff requested that the planting notes include the comment that the tree "roots be no greater than 1/loth the trunk diameter"; the plan mistyped this comment and the proposed SM Page I of 08/22/2012 HAPL12-022 Tree Permit\Tree Permit Staff Rpt.doc 6300 Southeenter Boulevard, Suite 4100 • Tu",ila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 plans states in three places that the "rootball (be) no greater than 1/101h the trunk diameter". The plans have been redlined to correct this typographic error. Plant substitutions are not allowed without written permission from the City prior to installation. Landscaping is to be maintained for the life of the project. Following installation and annually for two additional years, an inspection by City staff is required to evaluate that the landscaping has survived and maintained according to the approved plans. RECOMMENDATION: Approve the removal of eleven significant trees and the planting plan dated 7/26/2012, subject to the following red -lines on the plan set: 1) Replace "Katsura" with Cascara (Rhamnus Purshiana). 2) Correct the planting notes to say that the tree "roots be no greater than 1/101h the trunk diameter. 3) Note on the plans that no substitutions of plants are allowed without written permission from the City prior to installation. 4) Contact Stacy MacGregor, Assistant Planner at 206-431-3670 to schedule an inspection following installation. Additionally, schedule an inspection at the above number one year and two years following installation to verify the landscaping is installed and maintained according to the approved plans. Landscaping is to be maintained for the life of the project. Attachments: cc: ■ Red -lined plan set Sandra Whiting, Urban Environmentalist Files: L12-021 SM Page 2 of 2 08/22/2012 HAPL12-022 Tree Permit\Tree Permit Staff Rpt.doc Stacy MacGregor From: Stacy MacGregor Sent: Tuesday, August 27, 2013 11:36 AM To: 'sgould@kennethphilp.com' Subject: RE: Machine Toolworks Shoreline Tree Clearing Permit Sarah, Replacing these 5 trees (1913, 1914, 1915, 1916, 1917) with Pinus Contorta var. Contorta is acceptable and the following requirements from the Tukwila Municipal Code apply: Replacement trees shall be 2" in caliper. TMC 18.44.080 (134) Site preparation and planting of vegetation shall be in accordance with best management practices for ensuring the vegetation's long-term health and survival. 18.44.080 (C101) The property owner is required to ensure the viability and long-term health of trees planted for replacement through proper care and maintenance for the life of the project. Replaced trees that do not survive must be replanted in the next appropriate season for planting. TMC 18.44.080 (B5) Irrigation for buffer plantings is required for at least two dry seasons or until plants are established. TMC 128.44.080 (C2e) I will make a note in the file of this revision. Regards, Stacy MacGregor Tukwila Assistant Planner /Tuesday- Friday 8:30-3 6300 Southcenter Blvd l Tukwila, WA 98188 ph: (206) 433-7166 / fx: (206) 431-3665 Stacy. MacGregorPTukwila WA. gov / www.TukwilaWA.gov The of opportunity, the community of choice. From: Sarah Gould jmailto:sg_ould@ken nethphilp.coml Sent: Thursday, August 22, 2013 1:40 PM To: Stacy MacGregor Cc: Scott Holsapple Subject: RE: Machine Toolworks Shoreline Tree Clearing Permit Hi Stacy, Here are the list of trees that need to be replaced: 1913 1914 1915 1916 1917 We would like to replace them with Pinus contorta var. contorta. Thank you for your patience, Sarah Gould Technical Staff I Kenneth Philp Landscape Architects PS 2724 NE 55th Street, Seattle WA 98105 phone 206-783-5840 ext. 104 fax 206-706-1915 www.kennethphilp.com The information contained in this email, and all attachments, is proprietary and confidential. Distribution, duplication, disclosure or re -use of this information without written permission from Kenneth Philp Landscape Architects PS is prohibited. If you are not the intended recipient please delete this information and notify the sender. Thank you. luved�tzpe arc/ritects PS i 1 07/26/2012 Memorandum/Bulletin To: Stacy MacGregor, Assistant Planner for Dept. of Community Development, City of Tukwila From: Scott Holsapple Date: 26 July 2012 Re: Corrections for Machine Toolworks, First Technical Comment Letter Description: In response to your review of the Machine Toolworks Tree Clearing Permit plan, I have made the following changes: Details on how invasive species will be removed are in the new Site Prep and Soil Amendment Notes on sheet L-3.0. fz- Jute netting for erosion control has been added to sheet L-1.0, with details on L-3.0. Soil amendment details have been added to the new Site Prep and Soil Amendment Notes on sheet L-3.0. 4/- Mulch has been specified to be minimum 3" arborist chips and a note indicating this has been added to the Mitigation Plan on L-2.0, and the planting details on L-3.0 have been u dated to reflect the 2"-3" gap around trunks and crowns. 5. W opulus tremuloides has been replaced with Katsura trees. --ro r1o,� �S „cam .kf. Cornus sericea and Mahonia nervosa have been updated to the correct names. (c..Cornus canadensis is being kept,_as�e don't fore ee any issues _ Arctostaphylos uva-ursi has been updated to the native species instead of a cultivar. iSalix geyeriana has been removed from the live stake mix, and the stakes have been updated so that they are at a 2' density. yA U i •a 6. a, Planting details on L-3.0 now say to remove 2/3 of untreated burlap. -b Planting details on L-3.0 now specify backfilling with already amended soil on site. .a -'Planting details on L-3.0 have been updated to remove stakes. �d�-g- The planting schedule on L-2.0 and mitigation notes on L-1.0 have been updated to specify rootball details. I�. A detail for live stakes has been added to L-3.0, and the mitigation notes on L-1.0 and he plant schedule on L-2.0 have been updated to specify staking details. Ir Watering details have been added to the planting notes on L-3.0. � o � �Vlj 2724 NE 551h Street Seattle, Washington 98105 Phone 206.783.5840 Fax 206.706.1915 1 www.kennethphilp.com Cl ®f Tukwila Jim Hgggerton, tl9ayor Department of Community Development Jack Pace, Director July 19, 2012 Mr. Gary Anderegg 14600 Interurban Ave S Tukwila, WA 98186 RE: First Technical Comment Letter Machine Toolworks Tree Clearing Permit L12-021, PL12-022 Dear Mr. Anderegg: Email: Gary Anderegg (gnderegg@machinetoolworks.com) The City has completed its review of the above Tree Clearing Permit. Please find below a list issues compiled by Community Development staff regarding this project. In order to move forward with your application, we need a response on the following comments. Some may involve a revision of the plans and other comments may just be addressed in writing as way of an explanation. 1. Provide details on how invasive plants will be removed (i.e., grubbed out by machine, by hand? 2. Provide details on erosion control mechanisms during invasive species removal to prevent sedimentation into the river. Use of jute matting near the OHWM may be necessary. 3. Soil decompaction and amendment will be needed to ensure good plant survival and health. This means loosening the soil to at least 18 inches in depth and incorporating (tilling in) organic material such as compost (for example Cedar Grove or equivalent) into the entire planting site (or importing topsoil with at least 10% organic content) after tree removal and invasive plant removal and prior to planting. Provide details on soil amendment plan. (Note that the Shoreline regulations require site preparation in accordance with best management practices). In addition, this is in the best interests of the property owner, as this vegetation must be maintained and kept healthy for the life of the project. 4. Planted area must be mulched with arborist chips or bark after planting to help control weeds, prevent erosion, and conserve moisture. At least three inches should be applied except in the groundcover areas. Mulch must be kept 2 to 3 inches away from crowns of plants and trunks of shrubs and trees. Provide mulching details in the plan. This measure is also in the best interests of the property owner and is a best management practice for newly planted areas. Plant species: a. Populus tremuloides may not be the best choice for planting adjacent to the building (even though they are shown as being planted at least 10 feet away). The City would like to ensure the long term health of any trees planted along the shoreline (this species is somewhat shortlived) and would not like to see large trees near the building (at the same distance as some of the weeping willows are planted), that are weak - limbed like this species, and would probably need to be continuously pruned to keep them away from the roof. So, a substitute species should be specified. We suggest considering Acer circinatum, assuming that a deciduous species is desired. SM Page 1 of 2 HAPL12-022 Tree Tech Comments Ldoc 07/19/2012 6300 Southcenter Boulevard, Suite #100 • Tuk►i ila, IT'ashington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 b. Corms stolonifera is no longer the correct name — it is Cornus sericea. Berberis nervosa is now Mahonia nervnca c. Cornus canadensis is not recommended as a groundcover. It is notoriously difficult to grow, unless ideal forest conditions are present. Please specify a substitute. We suggest Fragaria.vesca, which also has white flowers for the landward part of this groundcover area and installing a wet -tolerant low -growing plant near the ordinary high water mark — such as Carex obnupta and/or Potentilla anserina. d. Please specify the native Arctostaphylos uva-ursi instead of a cultivar. e. Salix geyeriana is probably not an appropriate species for this river (it prefers wetlands and slow moving rivers). We suggest substituting with more of the Salix sitchensis and scouleriana. Also, planting of one live stake is not really equivalent to replacing one tree, but we will allow them to be counted to meet the tree count if the density is increased to 1 stake every 2 feet. The cost of live stakes is very reasonable and this should not present a significant cost increase to the property owner. 6. Planting notes: a. Change the notes about burlap removal to include: remove top 2/3 of untreated burlap. b. Backfilling of planting pit is to be with already amended soil on site — no backfilling with amended soils in the pit alone. Soils in the entire site must be amended. c. No tree staking. d. For B&B plants, trunks must be in the center of the root ball. e. For B&B plants minimum root ball diameters and depths shall be as follows: i. Thuja plicata: 6 ft height- 24" diameter root ball; 7 ft height- 26" diameter root ball; 8 ft height, 28" rootball diameter. Rootball depth, not less than 60% of width. ii. Fraxinus latifolia: 24 inch rootball diameter, rootball depth, not less than 60% of width. iii. Amelanchier alnifolnia: 24 inch root ball diameter f. No J roots, no circling roots, no root in rootball greater than 1/10 of trunk diameter g. For container -grown plants, roots shall be loosened prior to planting. No circling roots. Plants shall not be root bound. h. For live stakes, specify that they must be harvested from dormant stock and installed only between October 15th and March 15�'. Also 3/4 of the length must be installed below the ground (with at least two nodes above ground). Specify that pilot holes are to be used if necessary. 7. Provide details on how watering will be carried out. Plants must be watered during dry periods until established (two or three years). Fees Due: 8. A $3 balance is outstanding on your permit application. The fee must be paid prior to permit issuance. Next Steps Your next step is to address the comments made in this letter. Once you have addressed the comments and revised the plans, first send me electronic copies for review.. If you have any questions, I can be reached at 206-433-7166 or by email at stac y.r� nacgreL);or!titukwilawa.,.,ov. Sincerely, " V tZMZacG7regor Assistant Planner sM Page 2 of 07/19/2012 HAPL12-022 Tree Tech Comments Ldoc Memorandum TO: Stacy FROM: Sandra RE: L12-021, Machine Works Shoreline Tree Removal/Tree Replacement Plan, Comments 1. Provide details on how invasive plants will be removed (i.e., grubbed out by machine, by hand? 2. Provide details on erosion control mechanisms during invasive species removal to prevent sedimentation into the river. Use of jute matting near the OHWM may be necessary. 3. Soil decompaction and amendment will be needed to ensure good plant survival and health. This means loosening the soil to at least 18 inches in depth and incorporating (tilling in) organic material such as compost (for example Cedar Grove or equivalent) into the entire planting site (or importing topsoil with at least 10% organic content) after tree removal and invasive plant removal and prior to planting. Provide details on soil amendment plan. (Note that the Shoreline regulations require site preparation in accordance with best management practices). In addition, this is in the best interests of the property owner, as this vegetation must be maintained and kept healthy for the life of the project. 4. Planted area must be mulched with arborist chips or bark after planting to help control weeds, prevent erosion, and conserve moisture. At least three inches should be applied except in the groundcover areas. Mulch must be kept 2 to 3 inches away from crowns of plants and trunks of shrubs and trees. Provide mulching details in the plan. This measure is also in the best interests of the property owner and is a best management practice for newly planted areas. 5. Plant species: a. Populus tremuloides may not be the best choice for planting adjacent to the building (even though they are shown as being planted at least 10 feet away). The City would like to ensure the long term health of any trees planted along the shoreline (this species is somewhat shortlived) and would not like to see large trees near the building (at the same distance as some of the weeping willows are planted), that are weak -limbed like this species, and would probably need to be continuously pruned to keep them away from the roof. So, a substitute species should be specified. We suggest considering Acer circinatum, assuming that a deciduous species is desired. b. Cornus stolonifera is no longer the correct name — it is Cornus sericea. Berberis nervosa is now Mahonia nervosa. c. Cornus canadensis is not recommended as a groundcover. It is notoriously difficult to grow, unless ideal forest conditions are present. Please specify a substitute. We suggest Fragaria vesca, which also has white flowers for the landward part of this grou-ndeeve_r area and installing a wet -tolerant low -growing plant near the ordinary high "water mark — such as Carex obnupta and/or Potentilla anserina. 1 ,! d. Please specify the native Arctostaphylos uva-ursi instead of a cultivar. e. Salix geyeriana is probably not an appropriate species for this river (it prefers wetlands and slow moving rivers). We suggest substituting with more of the Salix sitchensis and scouleriana. Also, planting of one live stake is not really equivalent to replacing one tree, but we will allow them to be counted to meet the tree count if the density is increased to 1 stake every 2 feet. The cost of live stakes is very reasonable and this should not present a significant cost increase to the property owner. 6. Planting notes: a. Change the notes about burlap removal to include: remove top 2/3 of untreated burlap. b. Backfilling of planting pit is to be with already amended soil on site — no backfilling with amended soils in the pit alone. Soils in the entire site must be amended. c. No tree staking. d. For B&B plants, trunks must be in the center of the root ball. e. For B&B plants minimum root ball diameters and depths shall be as follows: i. Thuia plicata: 6 ft height- 24" diameter root ball; 7 ft height- 26" diameter root ball; 8 ft height, 28" rootball diameter. Rootball depth, not less than 60% of width. ii. Fraxinus latifolia: 24 inch rootball diameter, rootball depth, not less than 60% of width. iii. Amelanchier alnifolnia: 24 inch root ball diameter f. No J roots, no circling roots, no root in rootball greater than 1/10 of trunk diameter g. For container -grown plants, roots shall be loosened prior to planting. No circling roots. Plants shall not be root bound. h. For live stakes, specify that they must be harvested from dormant stock and installed only between October 15th and March 15th. Also 3% of the length must be installed below the ground (with at least two nodes above ground). Specify that pilot holes are to be used if necessary. 7. Provide details on how watering will be carried out. Plants must be watered during dry periods until established (two or three years). City of Tukwila Jim Haggerton, Mayo; Department of Community Development Jack Pace, Director July 9, 2012 Gary Anderegg Machine Toolworks, Inc. 14600 Interurban Ave S Tukwila WA 98168 Re: Tree Clearing Permit Application Dear Gary, The City is in receipt of the Tree Clearing Permit Application submitted to the Planning Department on July 6, 2012. The application was forwarded to Senior Planner, Carol Lumb, as requested. She will review the application along with the materials that were submitted. The application fee is $53.00, as stated on the City's 2012 Land Use Permit Fee schedule. This fee covers the 2 hours typically needed for review. The check submitted with the permit was for $50.00. Prior to decision/issuance of permit, all fees will need to be paid. Sincerely, Teri Svedahl Administrative Support Technician Building & Planning Cc; Carol Lumb, Senior Planner Enc Initials Page I of I W:\Admin\CITY SEALS & LETTERHEAD\Letterhead.doe 07/06/2012 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 Aim July 2, 2012 Carol Lumb, AICP, Senior Planner City of Tukwila Department of Community Development 6300 Southcenter Blvd, Suite 100 Tukwila, WA 98188 Dear Carol, jUL 0 6 2012 C®C�#P�'iN f` DEVELAPt��6 I am applying for a Tree Clearing permit to remove the trees on our property due to their poor condition and health as per the attached report from our Certified Arborist, Brian Gilles. They pose a hazard to persons and property. Based on the attached report and for your reference, the trees I am requesting a Tree Clearing Permit are #1901, #1902, #1903, #1904, #1905, #1906, #1907, #1908, #1909, #1910, #1911. I have. attached the replanting plan as per your request, however, the planting to meet the mitigation requirement with the limited space for replanting will be detrimental to the plants as per email attached from our Landscape Architect, Scott Holsapple. I am requesting an exception to the replanting plan as the trees requested to be removed are a hazard and must be removed now. I am also requesting a reduction of the amount of replanting due to overcrowding of the plants to meet the mitigation requirements with limited space available. I will agree to provide some replanting as per your section 18.54.140. I have enclosed the initial fee of $50.00. Please call once you have reviewed. Thank you for your help and guidance on the procedures. Regards, MACHINE TOOLWORKS, INC. 4 �� Gary Anderegg President 11Page Machine Toolworks, Inc., 14600 Interurban Avenue South Tukwila, WA 98168 (206) 5 7 5 - 3 3 9 0 RECEIVED s 2�121 Gills Consulting SUL Brian K. Gilles UNI COMM DEVELOPMENT 425-822-4994 RISK ASSESSMENT OF TREES AT MAZAK MACHINE WORKS 14600 Interurban Avenue South Tukwila, WA. 98188 April, 23, 2012 PREPARED FOR: Mazak Machine works Greg & Lisa Anderegg 14600 Interurban Avenue South Tukwila, WA 98188 PREPARED BY: GILLES CONSULTING Brian K. Gilles, Consulting Arborist ISA Certified Arborist # PN-0260A ASCA Registered Consulting Arborist # RCA-418 PNW-ISA Certified Tree Risk Assessor #148 A=n ��pt10MA! fog . �a LY�Tt CIERTIF120 49BdR,�V`1 ARlORISf fax: 425-822-6314 email: bkgilles@comcast.net P.O. Box 2366 Kirkland, WA 98083 Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 2 of 20 CONTENTS ASSIGNMENT.............................................................................................................. 3 METHODOLOGY........................................................................................................3 Failure......................................................................................................................... 3 OBSERVATIONS AND RECOMMENDATIONS......................................................4 AdditionalTesting....................................................................................................... 9 CONCLUSIONS...........................................................................................................9 WAIVER OF LIABILITY............................................................................................9 ATTACHMENTS........................................................................................................11 Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 3 of 20 EXECUTIVE SUMMARY There were 17 trees evaluated on the property around the building and in the parking lot areas. It is my professional judgment that many of the trees should be removed for safety of trail users and the safety of the structure. ASSIGNMENT Greg and Lisa Anderegg, owners of Mazak Machine Works at 14600 Interurban Avenue South in Tukwila, contracted with Gilles Consulting to evaluate the trees around their building and parking lot. They had concerns about the stability of the trees, the potential for the trees to damage the foundation of the building, and whether or not the trees in the parking lot were a danger to people and property. They requested that I perform a risk assessment of the 17 trees on the property and advise them on best management practices for the trees. METHODOLOGY On Thursday, April 12, 2012, I met with Mr. Anderegg at the site. He pointed out the trees of concern and requested that I evaluate them for risk. To evaluate the trees and to prepare the report, I drew upon my 30+ years of experience in the field of arboriculture and my formal education in natural resources management, dendrology, forest ecology, plant identification, and plant physiology. I also followed the. protocol of the International Society of Arboriculture (ISA) for Visual Assessment (VA) that includes looking at the overall health of the trees as well as the site conditions. This is a scientifically based process to look at the entire site, surrounding land and soil, as well as a complete look at the trees themselves. In examining each tree, I looked at such factors as: size, vigor, canopy and foliage condition, density of needles, injury, insect activity, root damage and root collar health, crown health, evidence of disease -causing bacteria, fungi or virus, dead wood and hanging limbs. Failure While no one can predict with absolute certainty which trees will or will not fail, we can, by using this scientific process, assess which trees are most likely to fail and take appropriate action to minimize injury and damage. Tree Tags The trees were tagged and numbered 1901 through 1917. The tags are made of shiny aluminum approximately one inch by three inches in size and are attached to the tree with staples and a one foot strip of brightly colored survey tape. The tags were placed as high Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 4 of 20 as possible to minimize their removal and were generally placed on the backsides of the trees as inconspicuously as possible. The trees were numbered and tagged beginning with the first Pine on the west side of the building in a clock wise manner going around the building and parking lot ending up in the southwest corner of the parking lot with the Red maple tagged as # 1917 OBSERVATIONS AND RECOMMENDATIONS The building is an approximate square with a square-ish parking lot on the south side. The Green river passes on the east side and there is a paved trail on the west side. The trees can be collected in to 4 groups: Trees along the west side of the building: a. They are numbered 1901 through 1906. They are 2 Austrian Black Pine and 4 Douglas Fir trees. b. One striking note is that they are growing on a small mound that surrounded the bases of the building on the west, north, east, and a portion of the south sides. 'hoto # 1: looking NE from the lriveway entrance to the parking lot ooking at trees # 1901 —1906 Note the small amount of soil volume available for the trees to develop idequate critical root zones . i. This berm is severely limiting the amount of exploitable for the critical root zone of all the trees planted on the berms. ii. Tree # 1903 has already failed due to a lack of adequate root space and volume. It is leaning into tree # 1904. The pressure of the trunk of # 1903 is causing the trunk of # 1904 to lean and is causing. the roots and base of # 1904 to fail. Left unattended both trees have the potential to fail and fall across the paved path. iii. All 6 trees have the potential to fail under a storm load due to the lack of rooting volume. They have the potential to cause harm to the foundation of the building if they do fail. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 5 of 20 c. 1 strongly recommend that trees # 1901 through 1906 be removed for safety. 2. The tree Along the north side of the building: a. Tree # 1907 is a Scotts Pine on the north side of the building that is planted within 4 feet of the building. b. Berm Planting: i. Like trees # 1901 through 1906, this tree is planted on a small berm with inadequate soil volume to support a critical root zone adequate to support this large tree under a storm load. The roots have had to grow next to the foundation and will fail ass the tree continues to grow taller than the building and catches more prevailing storm winds. c. I strongly recommend that trees # 1901 through 1906 be removed for safety. hoto # 2: looking east along the xth wall of the building towards ee # 1907 Note the weak area where the ee was previously topped and ow it has regenerated to be now filler than the building Note also the small berm miting the critical root zone of ie tree Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 6 of 20 3. Trees along the east side of the building: a. There are 4 large Weeping Willow trees along the east side of the building. b. They have all been pruned away from the building over the decades. i. The problem is that the pruning was done in a less than expert way and the trees are suffering extensive decay and loss of large limbs as a result. 1. Decay from large pruning wounds has coalesced into large decay columns in the large scaffold branches and main trunks. 2. In addition, Carpenter Ants have infested the decayed portions and are hollowing out the trunks and scaffold branches. c. All four trees have a high probability offailure and should be removed for safety. �! Photos # 3 & 4: Trees # 1908 & 1909 on the East side of the building. t I Note the poor pruning cuts, dead branches, and rot pockets on the trunks � r t fir_ i Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 7 of 20 ;� rlsthrPhoto # 5: The large decay column in tree # 1910. Not only does the decay extend up into the trunk it r ' extends down into the base of the trunk leaving it vulnerable to windthrow in a severe storm event. W� Vl� Oki Photo # 6: The base and lower trunk of tree # 1911 Note the advanced decay that extends down into the base and up into the trunk for 20 or more feet Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 8 of 20 4. Trees around the parking lot: a. There are 6 Red Maple trees along the south and east sides of the parking lot. They are all in Fair condition with moderate health and a few structural defects. i. Specific defects include: 1. Previous topping wound that have re=generated into reasonably healthy tops. However they are structurally weak at these old wounds. 2. They are planted in small planter bed at the edge of the parking lot and they are planted into incredibly poor soils. Almost all of the roots are on the surfaces of the ground. These trees will eventually outgrow their sites as the roots exceed the carrying capacity of the planter beds. b. Since the trees are in Fair condition and still provide a lot of cooling shade to the parking lot during the summer months I recommend retaining the trees and treating them. i. Cover the surface roots with several inches of mulch. ii. Fertilize the trees with proper tree based fertilizer sot increase the overall health of the trees. Photo # 7: The surface roots and lower trunk of # 1912 Photo # 8: Trees # 1915 & 1916 in the southwest corner of the parking lot. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 9 of 20 In an effort to present the information and conclusions for each tree in a manner that is clear and easy to understand, as well as to save paper, I have included a detailed spreadsheet, Attachment 1, Tree Inventory/Condition Spreadsheet. All the same information from the ISA Tree Hazard Form is included in this spreadsheet and the attached glossary. The descriptions on the spreadsheet were left brief in order to include as much pertinent information as possible and to make the report manageable. The attached glossary provides a detailed description of the terms used in the spreadsheet and in this report. It can be found in Attachment 2, Glossary. A brief review of these terms and descriptions will enable the reader to rapidly move through the. spreadsheet and better understand the information. Additional Testing The trees all presented signs and/or symptoms that were readily discernible using the visual tree evaluation system. These signs and/or symptoms indicate extensive internal decay and/or structural defects. Therefore, no additional tests were performed during this site visit. CONCLUSIONS It is my judgment that trees # 1901 through 1911 are an unacceptable level of risk. They pose a high potential of failure and the ability to cause bodily injury and damage to property. I believe they should be removed and replaced with smaller stature trees that will not outgrow the amount of available soil. WAIVER OF LIABILITY There are many conditions affecting a tree's health and stability, which may be present and cannot be ascertained, such as, root rot, previous or unexposed construction damage, internal cracks, stem rot and more which may be hidden. Changes in circumstances and conditions can also cause a rapid deterioration of a tree's health and stability. Adverse weather conditions can dramatically affect the health and safety of a tree in a very short amount of time. While I have used every reasonable means to examine these trees, this evaluation represents my opinion of the tree health at this point in time. These findings do not guarantee future safety nor are they predictions of future events. The tree evaluation consists of an external visual inspection of an individual tree's root flare, trunk, and canopy from the ground only unless otherwise specified. The inspection may also consist of taking trunk or root soundings for sound comparisons to aid the evaluator in determining the possible extent of decay within a tree. Soundings are only an aid to the evaluation process and do not replace the use of other more sophisticated diagnostic tools for determining the extent of decay within a tree. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 10 of 20 As conditions change, it is the responsibility of the property owners to schedule additional site visits by the necessary professionals to ensure that the long-term success of the project is ensured. It is the responsibility of the property owner to obtain all required permits from city, county, state, or federal agencies. It is the responsibility of the property owner to comply with all applicable laws, regulations, and permit conditions. If there is a homeowners association, it is the responsibility of the property owner to comply with all Codes, Covenants, and Restrictions (CC&R's) that apply to tree pruning and tree removal. This tree evaluation is to be used to inform and guide the client in the management of their trees. This in no way implies that the evaluator is responsible for performing recommended actions or using other methods or tools to further determine the extent of internal tree problems without written authorization from the client. Furthermore, the evaluator in no way holds that the opinions and recommendations are the only actions required to insure that the tree will not fail. A second opinion is recommended. The client shall hold the evaluator harmless for any and all injuries or damages incurred if the evaluator's recommendations are not followed or for acts of nature beyond the evaluator's reasonable expectations, such as severe winds, excessive rains, heavy snow loads, etc. This report and all attachments, enclosures, and references, are confidential and are for the use of the client concerned. They may not be reproduced, used in any way, or disseminated in any form without the prior consent of the client concerned and Gilles Consulting. Thank you for calling Gilles Consulting for your arboricultural needs. Sincerely, Brian K. Gilles, Consulting Arborist ISA Certified Arborist # PN-0260A ASCA Registered. Consulting Arborist # RCA-418 PNW-ISA Certified Tree Risk Assessor #148 Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 11 of 20 ATTACHMENTS ATTACHMENT 1 - TREE INVENTORY/CONDITIONS SPREADSHEET................12 ATTACHMENT 2 - GLOSSARY.................................................................................14 ATTACHMENT 3 - REFERENCES ..................................... :....................................... 20 Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 12 of 20 ATTACHMENT 1 - TREE INVENTORY/CONDITIONS SPREADSHEET ABBFtEVWTMI..EC8A3-SEEC,La6GMY1N FI P ATTACHNEIM FMGFWATM1)ETAI- Vrrem riat oflhetmeln older to-nd— thedsknf_Itid l ww c l ar PROPERTY TpEEM SP83ES SMNsEW FOUASE 1A01ift 1R W f00T fOdrS OOMs8tf3 Clallxw STATE TAH06T Ma" PFMOMJTYt1P ISAIIN/9O. PBCOINr8a4TON IACATON UPE tTON0mm OOUM PATM AnN3 PARr NBLLIM PATMtl Gnwwgonbmnbd%een"-cIP*odtrd4 Oad brax3s I. c.Wy. Hg1 PCLeNity or We<l Wdl. 1901 AERPn Avaspa Wads Based Wm NOD % tridd fdsra Ties Is t000se elm loins bk* —4d cave Good fmrrae Bann -W—" tunAdjon two if itUs. Base is IllN of o—te pd and ITS W d%esl r A dbld0. Poapat P-ft Portia G?oedrp on bum b*ft sbdp and pad trait Rrd bracts In co *y, bfgr pdbotdiN d Wad I 19M AIPPn 11.7 13 75% Avmpe Weds Imp Wert FND lasddm IAlua Teo Is too ckae loos bk* weld Dane Fab f3rras BenII os ry 6uxhlim Mille Oft it liBase is 72 Wdvest wd dlldp and bond ilan, Poor pas psrip kea Was dint{tt. G—rg on bmn bdwear Nt ad Tared tray . WB— I nowleals veal pwmly Petlefy Wadbrads in cargy. Bsseis 417 Wdwvt 1903 CF/Pm 10.4' 12 WA ry Alaipe AraaOe do to rod ad Fail Failed' 6uvbtlon wsf, T e bd In m et stain ad is pllrp N—r 19ircM 3 2 5 10 13Yme hose (sires Rstridd bavp bto the—Wof 19M, Poor Pod pvtrp vas strdg/, Gi *q on bmnbet-en tklp ad pmtd troll, —.1ig t lean dod brad— h campy, Hgt pub hilly d gem 1907 CF/Pm tO.P 12 GU% os Awrops Aw:ape dreltln FF1D Pestrktd dYra Baaeb Bd tornvest louddim vd,Pbor OykiO Ndn.9priacat l3rrsre pes9re d f pad pvirp pmc9tad. Tuk, base/rod caw ad 19W rod base on, Wiry de to pesure fan 19M O'w*p on bum bcheon bkU wd pemdtrdk Dead b—t- h conW/. Hgr Pd lb d 'ftw1stmckwto0ebk1g (.stridd fav Udcaso Fair SpYkat F3.rtrae fdrrdstlm dam 8 it tolls. Base is 4T Wofv st f-ddfm vd, Poor pwt rp pradkes Wed hrrHms h—W. HM prolvNty of diva Tm is too dose to its bk p• %add case Pbstridea 6uddim ti►m O k t ls, AE post pvirp Wig-b—d 190E LF/Prrr 16Y 13 86% .wry Ouse FUdlty Sragt hND pmdiom woe is W Tan NNlouddion corner, Good Sprivt 3 2 3 8 (dlrioe CimMV a 2 aided bem d MVcon- eJ Ndp. Tis tree hos nsre ores for rods W apparmW in. sail Is se povthey card Penetrate Figs pr.b blty ddkm, Tine b too dace to the bldit. %add care lo-Man W kse Nk his Nrlh sided 1907 ScP/Ps' 134' 13 65% G—oty cage drV Fakd newtap Stivigt FY1D lydrktd wpedMly os N Oda Ida thws the brYdrp, SSA' Baseb 4 NdErsdal 31nsks h—&high Folk Spiker 1 2 3 8 Ibns e lky symredc.1 Alerape dblda wM, pdardYly. dfolkre uda dam krd esp-.d1y a they pd tAw and hmW Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 13 of 20 TREE THY SPBClES DBi DW let SYMYEnW FCLYYOE OaOMI TfilliC ROOM RCOI8 OdYNBi1S F 87A716 TAMEr S CF PRCBAEXUIYCF ISAHAT/IW fiBLa1MBL11T10N LOCATION LINE CCM11ON COLLCOLLARRATND RATM PART FARAAW RA71N0 Pear pat pnriro practices, Rot Podkefs In piney march, TNs Is the best the tree mil eye E d 19M WASb 2Z8 24 55% 104- Ari-.ge FieguleeflrpLeans Fat Probade Restricted gd- irs health" stnctm mil dedinehm roar Consider RnoW ry Fora' . Typical, baserat on. Rboa t co m etim drerraal dap berm tan ife E side ofthe foudtim Base is alai IOT E dthe E tuda0m mall Port pat iNro pracdoes. Dead Baefrs In QrxlH- large broken branches ton recent stmn. Rot Pockets h piracy vmu d , The is the test 1909 W MSb 23,7' ZO 40116 Mnor Aaaga ing- Eadowr Restricted the tree Wit a er b4 Its health and sbu &re WD rd Indecine NaiSigifcert CkreidRUM" m base rot likdy a rrinp m Rcat exe d m dremod ala g berm tam E side dthe fokrdatim mall, Base is about E dE iarct0m mN Mrs PrcbdAe Restdde4 Poorpatpufrgpn@cices. Baseis6Nd a riot d S E dpoWng lot cuad b 14 SE Na SE mrg d birig 1910 WA/Sb 27.3' 20 65% aYTMXUY Aeage parWro SE ea Od bracies in ca pY. This is the Par Nrw9gifcart Brno e best the tee Wi ere he• all ck v rill ton here East POW pat PnArg practices, Cl G AdAned 1911 VNAISD 266' 2O 39% A age A Carte rat Base rot CapeterArt iniestalim , Tts is the best this Poor Nnagrifcart 2 3 3 8 Fb m parrodM asyrnrnetry tree mil eve do• all dorm III fan here Base is abort S S of plat cub and abat ST SE d RestcstdcSvIbaa ligt ffiad sfarrtl atx t 94' E d pakirp Id cub K&kh ow airfece rods, 1912 FWAr 21.8' 20 80% syrnrnatri Aerage Healthypical Ty Base rot ad 11'B' N dpeWrg lot m agacet p> ty to Fair soil eject, ma tor the S, Poor past pnring practices, This is the best tlis tree mil a be• all dosn rill tan here Salted 1913 RIWNPr 19LT 2Z 70% Gaesily A rage Regenerating- Sligt lam SE, U40 ,a Wd,4 Poor Fast Puing practices. GroWg in planter bed I'st, 2por"latstheaearty7midq Fair Sigfaat 3 2 2 7 Sol klect, rrcrltar parking lot symtrelnld A%erage typical SVGce RsJaapy Topped a 12-14 Souh d 1814 RNVM 1II 1" 22 Ems (3--ally- Agape Slim lean S. NaD R stddea Pow, past pi+6g does, Qasing in Flare Bed bstmeen 2 pakkg lots the are only 7- Ms. Fa Sulks t 3 2 2 7 Sol irlect, "wit p ro bl sYn* AQ 1YPcal , Sore decay In INUM Su4oe rod SO, or 1915 RWAr 1S7' 20 70% ty A S O lam S, Partially Iaetdated, Paonri post plg pr:cbss, t W&V In piartebed I & Sit 3 2 2 7 Scil irject. moritor paML.lot syntrwcal We A.eape typical Suface lxs e 2 paWrg kis that are orty 7 Wale. To the Seth dperwrp Ict 1916 F WAr 19.1" 24 WA Garmally Average Regermatirg- Typical Patlaity iaetdde4 past "no practice, Pei -sly TcFPstQ Fair Sig kart 3 2 2 7 Scil irjed, maita airy synirn[Vical A`aage aposed Sulboe 14 and 36, Occy in Suface roots Fork (M5S w Base h 29 S dundagwd L11ily —A. a9 E aC hbNldthe 1917 RWAr 17.9' 28 75%r='-Y Avaaga Ficalty Indkled bark NAD Restdcte4 2S' W oC 3 Wd Faking lot art ad SS N die FairSigrcat 3 2 2 7 Stlliryect, moiler drn 1T, Typical Suface airy dive arh Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 14 of 20 ATTACHMENT 2 - GLOSSARY Terms Used in This Report, on the Tree Condition / Inventory Spreadsheet, and Their Significance In an effort to clearly present the information for each tree in a manner that facilitates the reader's ability to understand the conclusions I have drawn for each tree, I have collected the information in a spreadsheet format. This spreadsheet was developed by Gilles Consulting based upon the Tree Risk Assessment in Urban Areas and the Urban/Rural Interface course manual and the Tree Risk Assessment Form, both sponsored by the Pacific Northwest Chapter of the International Society of Arboriculture, and the Hazard Tree Evaluation Form from the book, The Evaluation of Hazard Trees in Urban Areas, by Matheny and Clarke. The descriptions were left brief on the spreadsheet in an effort to include as much pertinent information as possible, to make the report manageable, and to avoid boring the reader with infinite levels of detail. However, a review of these terms and descriptions will allow the reader to rapidly move through the report and understand the information. 1) TREE LOCATION —Relative placement of the tree. 2) TREE #—the unique tag number of each tree. 3) SPECIES —this describes the species of each tree with both most readily accepted common name and the officially accepted scientific name. 4) DBH—Diameter Breast Height. This is the standard measurement of trees taken at 4.5 feet above the average ground level of the tree base. i) Occasionally it is. not practical to measure a tree at 4.5 feet above the ground. The most representative area of the trunk near 4.5 feet is then measured and noted on the spreadsheet. For instance, a tree that forks at 4.5 feet can have an unusually large swelling at that point. The measurement is taken below the swelling and noted, e.g. `28.4" at 36"'. ii) Trees with multiple stems are listed as a "clump of x," with x being the number of trunks in the clump. Measurements may be given as an average of all the trunks, or individual measurements for each trunk may be listed. (1) Every effort is made to distinguish between a single tree with multiple stems and several trees growing close together at the bases. 5) DRIP LINE —the radius, the distance from the trunk to the furthest branch tips. 6) % LCR—Percentage of Live Crown Ratio. The relative proportion of green crown to overall tree height. This is an important indication of a tree's health. If a tree has a high percentage of Live Crown Ratio, it is likely producing enough photosynthetic activity to support the tree. If a tree has less than 30% to 40% LCR, it can create a shortage of needed energy and can indicate poor health and vigor. 7) SYMMETRY —is the description of the form of the canopy, i.e., the balance or overall shape of the canopy and crown. This is the place I list any major defects in the canopy shape, e.g. does the tree have all its foliage on one side or in one unusual Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 15 of 20 area? Symmetry can be important if there are additional defects in the tree such as rot pockets, cracks, loose roots, weak crown, etc. Symmetry is generally categorized as Generally Symmetrical, Minor Asymmetry or Major Asymmetry: i) Gen. Sym.—Generally Symmetrical. The canopy/foliage is generally even on all sides with spacing of scaffold branches typical for the species, both vertically and radially. ii) Min. Asym.—Minor Asymmetry. The canopy/foliage has a slightly irregular shape with more weight on one side, but appears to be no problem for the tree. iii) Maj. Asym.—Major Asymmetry. The canopy/foliage has a highly irregular shape for the species with the majority of the weight on one side of the tree. This can have a significant impact on the tree's stability, health and hazard potential —especially if other defects are noted such as cracks, rot, or root defects. 8) FOLIAGEBRANCH—describes the foliage of the tree in relation to a perfect specimen of that particular species. First the branch growth and foliage density is described, and then any signs or symptoms of stress and/or disease are noted. The condition of the foliage, or the branches and buds for deciduous trees in the dormant season, are important indications of a tree's health and vigor. i) For Deciduous trees in the dormant season: (1) The structure of the deciduous tree is visible. (2) The quantity and quality of buds indicates health, and is described as good bud set, average bud set, or poor bud set. These are abbreviated in the spreadsheet as: gbs, abs, or pbs. (3) The amount of annual shoot elongation is visible and is another major indication of tree health and vigor. This is described as: a) Excellent, Good, Average, or Short Shoot Elongation. These are abbreviated in the spreadsheet as ESE, GSE, ASE, or SSE. ii) For evergreen trees year round and deciduous trees in leaf, the color and density of the foliage indicates if the tree is healthy or stressed, or if an insect infestation, a bacterial, fungal, or viral infection is present. Foliage is categorized on a scale from: (1) Dense —extremely thick foliage, an indication of healthy vigorous growth, (2) Good —thick foliage, thicker than average for the species, (3) Normal/Average—thick foliage, average for the species; an indication of healthy growth, (4) Thin or Thinning —needles and leaves becoming less dense so that sunlight readily passes through; an indication that the tree is under serious stress that could impact the long-term survivability and safety of the tree, (5) Sparse=few leaves or needles on the twigs, an indication that the tree is under extreme stress and could indicate the future death of the tree, Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 16 of 20 (6) Necrosis —the presence of dead twigs and branchlets. This is another significant indication of tree health. A few dead twigs and branches are reasonably typical in most trees of size. However, if there are dead twigs and branchlets all over a certain portion of the tree, or all over the tree, these are indications of stress or attack that can have an impact on the tree's long-term health. (7) Hangers —a term to describe a large branch or limb that has broken off but is still hanging up in the tree. These can be particularly dangerous in adverse weather conditions. 9) CROWN CONDITION —the crown is uppermost portion of the tree, generally considered the top 10 to 20% of the canopy or that part of the canopy above the main trunk in deciduous trees and above the secondary bark in evergreen trees. i) The condition of the tree's crown is a reflection of the overall health and vigor of the entire tree. The crown is one of the first places a tree will demonstrate stress and pathogenic attack such as root rot. ii) If the Crown Condition is healthy and strong, this is a good sign. If the crown condition is weak, broken out, or shows other signs of decline, it is an indication that the tree is under stress. It is such an important indication of health and vigor that this is the first place a trained forester or arborist looks to begin the evaluation of a tree. Current research reveals that, by the time trees with root rot show significant signs of decline in the crown, fully 50% or more of the roots have already rotted away. Crown Condition can be described as: (1) Healthy Crown —exceptional growth for the species. (2) Average Crown —typical for the species. (3) Weak Crown —thin spindly growth with thin or sparse needles. (4) Flagging Crown —describes a tree crown that is weak and unable to grow straight up. (5) DyingCrown--describes rown—describes obvious decline that is nearing death. (6) Dead Crown —the crown has died due to pathological or physical injury. The tree is considered to have significant stress and/or weakness if the crown is dead. (7) Broken out —a formerly weak crown condition that has been broken off by adverse weather conditions or other mechanical means. (8) Regenerated or Regenerating —formerly broken out crowns that are now growing back. Regenerating crowns may appear healthy, average, or weak and indicate current health of the tree. (9) Suppressed —a term used to describe poor condition of an entire tree or just the crown. Suppressed crowns are those that are entirely below the general level of the canopy of surrounding trees which receive no direct sunlight. They are generally in poor health and vigor. Suppressed trees are generally trees that are smaller and growing in the shade of larger trees around them. They generally have thin or sparse Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 17 of 20 . needles, weak or missing crowns, and are prone to insect attack as well as bacterial and fungal infections. 10) TRUNK —this is the area to note any defects that can have an impact on the tree's stability or hazard potential. Typical things noted are: i) FORKED —bifurcation of branches or trunks that often occur at a narrow angle. ii) INCLUDED BARK —a pattern of development at branch or trunk junctions where bark is turned inward rather than pushed out. This can be a serious structural defect in a tree that can and often does lead to failure of one or more of the branches or trunks, especially during severe, adverse weather conditions. iii) EPICORMIC GROWTH —this is generally seen as dense thick growth near the trunk of a tree. Although this looks like a healthy condition, it is, in fact the opposite. Trees with Epicormic Growth have used their reserve stores of energy in a last ditch effort to produce enough additional photosynthetic surface area to produce more sugars, starches and carbohydrates to support the continued growth of the tree. Generally speaking, when conifers in the Pacific Northwest exhibit heavy amounts of Epicormic Growth, they are not producing enough food to support their current mass and are already in serious decline. iv) INTERNAL STRUCTURAL WEAKNESS —a physical characteristic of the tree trunk, such as a kink, crack, rot pocket, or rot column that predisposes the tree trunk to failure at the point of greatest weakness. v) BOWED —a gradual curve of the trunk. This can indicate an Internal Structural Weakness or an overall weak tree. It can also indicate slow movement of soils or historic damage of the tree that has been corrected by the curved growth. vi) KINKED —a sharp angle in the tree trunk that indicates that the normal growth pattern is disrupted. Generally this means that the internal fibers and annual rings are weaker than straight trunks and prone to failure, especially in adverse weather conditions. vii) GROUND FLOWER —an area of deformed bark near the base of a tree trunk that indicates long-term root rot. 11) ROOT COLLAR —this is the area where the trunk enters the soil and the buttress roots flare out away from the trunk into the soil. It is here that signs of rot, decay, insect infestation, or fungal or bacterial infection are noted. NAD stands for No Apparent Defects. 12) ROOTS —any abnormalities such as girdling roots, roots that wrap around the tree itself that strangle the cambium layer and kill the tree, are noted here. 13) COMMENTS —this is the area to note any additional information that would not fit in the previous boxes or attributes about the tree that have bearing on the health and structure of the tree. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 18 of 20 14) CURRENT HEALTH RATING —A description of the tree's general health ranging from dead, dying, poor, senescent, suppressed, fair, good, very good, to excellent. 15) STATUS —this is the rating of whether the tree is Significant or Non -Significant,. based upon whether it is in good health and good structure. PNW-ISA TREE RISK ASSESSMENT RATINGS FOR HAZARD POTENTIAL -- The Pacific Northwest Chapter of the International Society of Arboriculture now certifies arborists as Certified Tree Risk Assessors using an adjusted scale of 3 to 12 points based upon 4 component parts. They are: 16) TARGET RATING --A scale of zero to three points depending upon the amount of use within the range of the tree and the amount of injury or damage that might occur if the tree or component part does fail. Target is both the level of use and the quality/value of the target combined with the foreseeable amount of injury or damage that will likely occur should the tree or component part fail. i) 0 Points, no target. No Hazard. ii) 1 Point, Low human use or low target value. iii) 2 Points, Moderate human use or moderate target value. iv) 3 Points, High or constant human use or high target value. 17) SIZE OF PART-- The larger the tree or component part that fails, the greater the potential for injury or damage. i) 1 Point = small branches or trunks up to 4 inches in diameter. ii) 2 Points = branches or trunks from 4.1 to 19.9 inches in diameter. iii) 3 Points = large branches or trunks greater than 20 inches in diameter. 18) PROBABILITY OF FAILURE --This component ranks the likelihood that the observed defect(s) will fail in a reasonable amount of time in the foreseeable future. The probability of failure automatically has associated with it threshold of action recommended to reduce or minimize the potential failure and associated injuries or damages that might occur. i) 1 Point = Minor defect is not likely to lead to imminent failure. (1) No further action is required. ii) . 2 Points = One or more defects are well established but would typically not lead to failure for several years. (1) Corrective action might be useful to prevent future problems but only if time and money is available. Not the highest priority for action. Generally "retain and monitor" is acceptable action. iii) 3 Points = The defect(s) is serious and failure is likely. (1) Corrective action is required in weeks or months. iv) 4 Points = The defect(s) are serious and imminent failure is likely. (1) Action is required in days or weeks. v) 5 Points = The tree or component parts are already failing. Failure is imminent. This is an emergency situation. (1) Corrective action is required immediately today. 19) ISA HAZARD RATING --The combined component ratings of Target Rating, Size of Part, Probability of Failure, and Other Risk Factors on a scale of 3 through 12. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 19 of 20 20) RECOMMENDATION— this is an estimate of whether or not the tree is of sufficient health, vigor, and structure that it is worth retaining. Specific recommendations for each tree are included in this column. They may include anything from pruning dead wood, mulching, aerating, injecting tree -based fertilizer into the root system, shortening into a habitat tree or wildlife snag, or to completely removing the tree. i) Monitor: "Monitor" is a specific recommendation that the tree be re- evaluated on a routine basis to determine if there are any significant changes in health or structural stability. "Monitor annually" (or bi-annually, tri- annually, etc.)" means the tree should be looked at once every year (or every 2 or 3 years, etc.) This yearly monitoring can be a quick look at the trees to see if there are any significant changes. Significant changes such as storm damage, loss of crown, partial failure of one or more roots, etc. require that a full evaluation be done of the tree at that time. ii) Potential to retain with tree protection measures: means that the tree appears to have the internal resources, the health and vigor, structural stability, and the wind firmness to be able to withstand the stresses of construction if development requirements and construction requirements allow. iii) Habitat or Remove: means that the tree has a high potential to fail and cause either personal injury or property damage —in other words the tree has been declared a hazard tree and should be dealt with prior to the next large storm. If it is at all possible the recommendation is to leave some of the trunk standing for wildlife habitat and some of the trunk on the ground as a nurse log. The height of the standing habitat tree depends upon the size of the tree, the condition of the tree, and the distance to a probable target. It should be short enough so that when it does fail years in the future it will not cause personal injury or property damage. Nurse logs can be laid horizontally across the slope to aid with erosion control and to provide microenvironments for new plantings. The nurse logs meaning to be steak to prevent their movement and potential harm to people. If for some reason this is not possible that should be removed for safety. NOTE: TREES WITH THE SAME DESCRIPTION AND DIFFERENT RATINGS: Two trees may have the same descriptions in the matrix boxes, one may be marked "Significant," while another may be marked "Non -Significant." The difference is in the degree of the description, i.e., "early necrosis" versus "advanced necrosis" for instance. Another example is "center rot" or `base rot". In a.Western Red Cedar tree, the presence of low or even moderate rot is not significant and does not diminish the strength of the tree. However, low levels of rot in the base of a Douglas Fir tree, in an area known to have virulent pathogens present, is highly significant and predisposes that tree to windthrow. Risk Assessment of Trees at Mazak Machine Works 14600 Interurban Ave S, Tukwila, WA 98188 Gilles Consulting April 23, 2012 Page 20 of 20 ATTACHMENT 3 - REFERENCES Harris, Richard W. et al. Arboriculture, Integrated Management of Landscape Trees, Shrubs, and Vines. 41" ed. Upper Saddle River: Prentice Hall, 2004. 2. Matheny, Nelda P. and Clark, James R. Evaluation of Hazard Trees. 2°d ed. Savoy: The International Society of Arboriculture Press, 1994. 3. Matheny, Nelda P. and Clark, James R. Trees & Development, A Technical Guide to Preservation of Trees During Land Development. Savoy: The International Society of Arboriculture Press, 1998. 4. Mattheck, Claus and Breloer, Helge. The Body Language of Trees, A Handbook for Failure Analysis. London: HMSO, 1994. Pacific Northwest Chapter-ISA. Tree Risk Assessment in Urban Areas and the Urban/Rural Interface. Course Manual. Release 1.5. PNW-ISA: Silverton, Oregon, 2011. Gary Anderegg From: Scott Holsapple <sholsapple@kennethphilp.com> Sent: Monday, July 02, 2012 5:15 PM To: Gary Anderegg Cc: 'Brian K Gilles' Subject: RE: Tukwila-Mazak Machine Works Gary - Yes, I think the tree and shrub planting is too dense given the mature size of those species. I would think roughly half of the trees and shrubs we have on our schedule would be adequate. Scott Holsapple Kenneth Philp Landscape Architects From: Gary Anderegg [mailto:ganderegg@machinetoolworks.com] Sent: Monday, July 02, 2012 2:48 PM To: sholsapple@kennethphilp.com Cc: 'Brian K Gilles' Subject: RE: Tukwila-Mazak Machine Works Scott, In your professional option, does your proposed planting plan seem too excessive for the amount of land available, for the health and growth of the new planting? If it does, I am going to request and exception to the requirement. Regards, Gary Anderegg Machine Toolworks, Inc. (206) 947-7489 Cell (800) 426-2052 Office www.machinetoolworks.com From: Scott Holsapple [ma ilto: sholsa ppleO) ken nethph i 1p.com] Sent: Thursday, June 21, 2012 9:55 AM To: Gary Anderegg Cc: 'Brian K Gilles' Subject: RE: Tukwila-Mazak Machine Works Hi Gary - Attached are our tree removal and planting restoration plans for you review. If these meet your approval, please feel free to go ahead and submit. If you have questions or would like to see revisions, please let me know. CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX: (206) 431-3665 E-mail. plannin(a(a�TukwilaWA.gov AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS PERMISSION TO ENTER PROPERTY STATE OF WASHINGTON ss COUNTY OF KING RECEIVED ►JUL 10G 20121 DEVEUN LOPMEENNT The undersigned being duly sworn and upon oath states as follows: 1. I am the current owner of the property which is the subject of this application. 2. All statements contained in the applications have been prepared by me or my agents and are true and correct to the best of my knowledge. 3. The application is being submitted with my knowledge and consent. 4. Owner grants the City, its employees, agents, engineers, contractors or other representatives the right to enter upon Owner's real property, located at /14G oo i.vTrit e-lz 4.v q y _ s, for the purpose of application review, for the limited time necessary to complete that purpose. 5. Owner agrees to hold the City harmless for any loss or damage to persons or property occurring on the private property during the City's entry upon the property, unless the loss or damage is the result of the sole negligence of the City. 6. Non -responsiveness to a City information request for ninety (90) or more days, shall be cause to cancel the application(s) without refund of fees. EXECUTED at kA 01-- (city), 11,�_(state), on� , 20—Pt (Print Name) �II�GGG /it//i.-2G2G.4�/ h�'y� S- ir//LGG/GD, Ll/ij� (Address) (Phone Number) (Sighafire) On this day personally appeared before me clnyw to me known to be the individual who executed the foregoing instrument and acknowledged that he/she signed the same as his/her voluntary act and deed for the uses and purposes mentioned therein. SUBSCRIBED AND SWORN TO BEFORE ME ON THIS _QF ` )U A tp , 20 Notary Public State of Washington NANCY Y WU My Appointment Expires Feb 14, 2015 NOTAR Lein rand for the State of Washington residing at-[11V-ca 11 & My Commission expires on H:V.and Use Applications in PDRTree Permit-Jan201 Ldoc 1JUL' 0 2012 CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX (206) 431-3665 E-mail: planning(a TukwilaWA.gov COMMUNITY OEV ELOPMEiiT TREE CLEARING PERMIT FOR STAFF USE ONLY Permits Plus Type: P-TREE Planner: File Number: Z— a • a Application Complete Date: Project File Number: [Application Incomplete Date:. Other File Numbers: NAME OF PROJECT/DEVELOPMENT: Machine Toolworks Tree Removal and replanting plan LOCATION OF PROJECT/DEVELOPMENT: Give street address or, ifvacant, indicate lot(s), block and subdivision, access street, and nearest intersection. /,o /-4-1 rUr-- 14600 indu tip -Bra, Tukwila, WA 98168 LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). 3365901.650 DEVELOPMENT COORDINATOR: The individual who: • has decision making authority on behalf of the owner/applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City to whom all notices and reports will be sent. Name: Gary Anderegg Address: 14600 Interurban Ave S Phone: (206) 575-3390 E-mail: gnderegg@machinetoolworks.corn FAX: Signature: 4f,Date: Z C ck 5 p d H:1Land Use Applications in PDF1Tree Permit-Jan201 Ldoc ' s l MA]AK MACHINE WORKS \ EXISTING PARKING LOT I • I 1 plllf PLANT SCHEDULE — b al,n 'i — — _l_ us• On SMAWA NAIE CWMW MKE SUE COMM .kd.h S—b" 7'.dper hl hh" bn.dit BIB td n P.prr kd 1' olper K bhPd k..diy IH bb C Onto. bA P' lW Fd b*" k..dil. BE Aw. Qdkl bpn 1' o7per K b.hd kndv& 66 W.— kd Cde H' m kl bhwd kaki/. U3 B WILLOW RAKES I7 fd. lryei.. Grye Wih. IX da K.p. mod. ad dd.6 IS Sf. s /enm s w wd . 1/1" d> Cry. m . ad Add IS Sd.,,A— Sid. Wi. 1/7' d.. Kq,.d, ad Am n WOINAm 71 10M1 IIBimW (M[Pl uPmD nx1[. a NxMd[PM Sw,a km S m, Q7Y BOTAWAL NAME EWMOM*A NIF EWMENTS d Ea,• ,ap kd0ar 114 Id nd OV k S P1b1eyYP km Nod on.p It 1 pl Sd nd w 4-. O Il SIoYAoia7x .Mn I PL — Fd ad wl...•d ® S Y.m.i• e.a• E. j— Fwprn N." 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(1�1 °-1 \ 5 YF1.11 l 1 E✓f q Vl.'W a t ,• + w ,�• m r� 1p FFi7 ARCHP n ZZJ,NI N %4 J- ._-_ ; W',. F - .. I\ »x •.a 0, . ?T4L E N .PLO R ... 'I D __. N r ' TT :. r�IL •., T A bLDI4G TP.. hI U.. <. wG-•sY nLT£K --- - .IF • P.Rlr!- 1 - J ;.Y.'�' ' _,_1 >'� IfT- 7 �• 3 ➢PP.G3 >R¢A %: ZT P. 1^_ %• LL E-5: "0'P • IJ %TA �S iP'hL R_Ra R--P bG( LLb i ] Y ✓ _ E r « mr Ptov or,. ar l.Lb 0 a, �` NG:,i {.vA.+r I i {{ t.. 1 �t LPMrAG, u.. O _ ♦ � 5"AN nKp 13 4 l �. etl h. f y R£OLIKE �eNONN) 2 5P (VMI. J%7 .l2-T.:'.) �D�3 '`'-,•i ,-rr rl CM EM IKONMONT :ONE J 6.& 0 : 9 '5�: '� b.+l._ I'., • +�LX TAL ` 140-TH -TOTAL b:TC: AREA. EU-PE':'?Z 1nP.b t•. _ 04 2 Sow ' If1906 "' ® l (r♦� ___4j Thuja plicata Western red cedar 1901 13,4'� _ 1 Fraxinus latifolia Oregon ash #i90s — \ Cr �� Paper birch # 1904 ` �i. r I Sallx sltchensis Sitka willow #1908 3# 19.03 I \ 22.8" �i 10.4-....c.,' \ ® , t ` #'(90Z \.......... LEGEND 11.2" MAZAK MACHINE WORKS \ _._. - ♦♦ • 111111 11111 11111 • Limit of Work j r #1909 \ I \ 23.7" � I Property Line #19001 .lY ........ Approx. River Environment lone Extents Approx. High Water Mark I :• �� Approx. River Water Line \ % % \ 0� - ` 8 Amelanchier / \ J • / u121.3" " ® \ / �r f Existing Trees to Be Preserved \ At1917 @ I . 17.9" i ® Trees Proposed for Removal EXISTING PARKING LOT t' \ 0 Woodchip Overlook \ 28.6" j A PLANT SCHEDULE / QTY BOTANICAL NAME / — — 20.1" — j „ Is.r 19._ COMMON NAME SIZE COMMENTS 9 Amelanchier alnifolia Serviceberry 2" caliper, 24" dia. root ball 3 Betula papyrifera Paper birch 2" caliper Full, balanced branching, B&B, trunk at the center of root ball, I Fraxinus latifolia Oregon ash 2" caliper, 24" dia. rootball, rootball depth at least 60% width no I roots or circlingg roots, rootball no greater than 1/IOth trunk dia. 4 Thuja pliaa Western red cedar 6-8' all (root ball dia. should be 24" if 6', 26" if 7', 28" if 8'), rootball depth at least 60% width WILLOW STARES 2 Salix scouleriana Scouler willow 1/2" dia. Kept moist and shaded, I Salix sitchensis Sitka willow 1/2" dia. harvested from drrmant stock, Installed only Oct IS - Mar IS 20 TOTAL TREES (MEETS REQUIRED NUMBER OF REPLACEMENTS) MITIGATION SCHEDULE TREE No. 1901 CALIPER (IN-) 12.0 No. REPLACEMENTS ,2— I902 11.2 2 1903 I0.4 2 1904 10.0 2 1905 12.1 4 1906 16.1 4 1907 13.4 4 TOTAL CALIPER REMOVAL 85.2 TOTAL REPLACEMENTS:0 PER TUKWILA MUNICIPAL CODE SECTION`18`S10— J (AC Ad-, MITIGATION NOTES REPLACEMENT SIZE: 2" caliper for deciduous trees, roothall no greater than 1/10th trunk diameter, no j roots or circling roots. Thuja plirata: 6' height - 24" dia. rootball; 7' height - 26" rootball; 8' height - 28" rootball; oothall depth at least 60% width. Fraxinus americans: 24" dia. rootball; rootball depth at least 60% width. Amelanchier alnifolia: 24" dia. roothall. 6-8' tall for evergreens, rootball no greater than 1/10th trunk diameter, no j roots or circling roots. 1/2" diameter for live stakes, harvested from dormant stock and installed between Oct IS and Mar 15. REPLACEMENT DENSITY: Outside River Buffer Zone: 70 trees/acre max. (including existing trees) q—e/ Wthin River Buffer Zone: IS-20' spating for trees, �LJ 3-or shrubs, 1.2' fo r stakes, 2 solo scouleriana Scowler willow — ORDINARY HIGH WATER MARK WATER LINE RIVER LEVEL EL. 3.0 Landscape Archit Phone: 201 183 5840 PIALHINt TOOLWORKS, 1 14600 INTERURBAN AV TII0IAIIIA IAIA 00100 STATE Of- WASHINGTOI REGISTEREC �DSCA '® PERMIT DRAW DESIGNED BY: SH DRAWN BY: jK / SH / S( 41REVISIONS . /%+REVISIONS Sheet True CALL 2 DAYS MITGATI( BEFORE YOU DIG 1-800-424-5555 PLAN Sheer Nunher a 5' in, 70' 1 •i ?\nuS CO( bHc� "a"CM-6 C ICQQe' L'--� Q-fQ' 04*L6 �''e425iC �ep�cse�'�n3 . -Cc ees-ty b4e � v S PLANT SCHEDULE Mahonia i),,' W1 P9 k m munitum Sward Fem �GS mphoricupas mdks eeping Snowberry MAIAK MACHINE WORKS Western Red Cedu LEGEND " � � � � � m Limit of Work Property line ... _ . _ . — River Environment lone Extents I Katsun High Water Mark / 0 River Water line GSalix scouleriam 3 Scouter Willow .�._., y ♦ 3 faliz atshemn ) • � ♦ Sitka WiOow _ \ r Existing Trees ♦ Q \ ♦ 15 Amelandlier alnhlia Sen aberry ♦ � Woodchip Overlook 61 Viburnum du{, Vacdnium matun i ++ A + EXISTING PARKING LOT - ++ + o \ + +1 ++ ++; 1 + + 1916 + —#191S 1'A;`#1914 1 �- 10.1" 1 1913 19.5" ++ i + QTY BOTANICAL NAME COMMON NAME SIZE COMMENTS LEES r �I IN`��'� e.. 10 41 \, o � t/ E �.-- Aruosu h os uvalNsi 0 W Kinnikinmk Comus canademu BunahberrY Dogwood MULCH ENTIRE PLANTING AREA W/ NIX. 3" ARBORIST CHIN, TTP. ORDINARY HIGH WATER MARK ER LINE RIVER LEVEL EL. 3.0 9 I Lonic,ra dhws "I 1714 NE Silk I.. Aaas Wneiv. 9810S Landscape Arcbitecta Ps Ph.. : 206 781 S840 F. 206 706 191E MACHINE TOOLWORKS, INC. 14600 INTERURBAN AVE SOUTH TUKWILA. WA 98188 STATE OP WASHINGTON R"VaS'EREO ,J�"�I.RC�.TMT PERMIT DRAWINGS DESIGNED BY: SH DRAWN BY: JK / SH / SG IS Amelanchier alnifolia Serviceberry 2" caliper, 24" dia. root ball QTY BOTANICAL NAME COMMON NAME SIZE COMMENTS e Knnikmnk Q Mack Orange Paper Birch Date Issue ,r"'�SHRUBS 1 2 PERMIT SUBMITTAL 6 Betula papyrifera Paper Birch 2" caliper 1 0 1 6 Corpus sericea Red -Osier Dogwood I gal. Comm anademu IP Svmphoricarpos Abm 6 Camus auin a Q 16/ 1 REVISIONS Full, balanced branching, B&B, + �a.J' S Philadefphrs kwisii Mack Orange I gal. Bundherry Dogwood Snowberry At $ier Dogwood 4 Fraxinus latifolia Oregon Ash 2" cal r, 24" dia. Football, trunk at the center of root ball Full and well -rooted, rootbal depth at least 60% width no J roots or cirding roots, roadsall 12 S7mphoicaspos albus Snowberry I gal. no circling roots, �v no greater than III th trunk dia um ovations Evergreen i S VacciniEver Huckleberry I il 8 enm�'nura� ^2" caliper B RY B not root bound {L� `�-cTncw►Rt'fi V�{TggJk �.�(���—c—� (" B 6 Viburnum edule Highbush Cranberry I gal. 2 Thuo plicata Western Red Cedar 6-8' tall (root ball dia should be 9 Lonicera ciliosa Trumpet Honeysuckle I gal. 14" if 6', 26" if 7', 28" H 81, 3S TOTAL TREES rootball depth at least 60% width , 7� GROUNDCOVERS CALL 2 DAYS MITGATION WILLOW STAKES BEFORE YOU DIG ® 375 kctosuphldos ura-uni Ninnikinnik 4" pots 12" O.C. 16 Salix scouleriana Scouler Willow 1/2" dia Kept moist and shaded, . 37S Comus canadensis Bunchberry Dogwood 4" pots 12" O.C. 1-800-424-5555 PLAN � 26 Salix sitchensis Sitka Willow I/2" dia Full and well -rooted, harvested from dormant stock, installed only Oct IS - Mar IS no circling roots, S2 TOTAL STABS 100 M lystic nervosa Low Oregon Grape I gal. 36" O.C. not roorbound ® u..r Nwlkv 4S Polystichum muniam Sword Fern 1 gal. 36" O.0 17 TOTAL M111GATNFN (MEETS REQUIRED NUMBER OF REPLAGEMENTS) 125 Symphoricarpos moiis Creeping Snowberry I gal. 24" O.C. Q 0 S. 10, 10' �_ 1L O SCALE: I"=10'-0" NORTH 1�0 `CN�\ `� 0 ` L.� (���� t �..� t� �` "��StCN m' ��`�► � Q.-` �,35`NAAJ�— uva-uru \) \ 5 16.1 #1�04�'�: sFf �4 71 G 3#190�r C #1957 17.9" / 41907 J 13.4 JL � MAZAK MACHINE WORKS EXISTING PARKING LOT LEGEND - — — — — — M Limit of Work _ _ Property line _ . _ . _ . _ . _ Approx. River Environment Zone Extents — - — Approx. High Water Mark #2.8" —— — — _—— #1909 — \ / 23.7" \ t#19 10 -- — Ir I #1916 _ \ / e #191S I ® If1914 I —� ® #1913 19.S" a ♦ t ♦ f ♦ It - , ,. ♦` Y' Tav, a _ p "� t SAW Lr r REMOVAL & RESTORATION AREA LIMIT OF WORK TE KEY ALE: I" = 30' 0" MITIGATION SCHEDULE TREE No. CALIPER (IN.) No. REPLACEMENTS 1901 12.0 6 1901 11.1 6 1903 10.4 6 1904 10.0 6 1905 I2.1 6 1906 16.1 6 1907 13.4 6 1908 11.1 8 1909 13.1 8 1910 11.3 8 1911 11.6 8 TOTAL CALIPER REMOVAL 187.6 TOTAL REPLACEMENTS: 74 ORDINARY HIGH WATER MARK ER LINE RIVER LEVEL W,3.0 \ MITIGATION NOTES Approx. River Water Line Existing Trees to Be Preserved Imasire Plants To Be Removed kenneth it 1724 a[ 55's Scot kmk, Wv6iq. 98105 L a a d a c a p e Architects Ps Rave: 106 783 5N0 f. 206 706 1915 MACHINE TOOLWORKS, INC. 14600 INTERURBAN AVE SOUTH TURWILA, WA 98188 �L� STATE OF WASHINGTON R=(Y, S7Rr-O L SeSCR ' A4CWEcGT KE'vvE R. n:iP " Gamnf'C>TE �0 5<b PERMIT DRAWINGS DESIGNED BY: SH DRAWN BY: JK / SH / SG Date Issue 06/21/12 PERMIT SUBMITTAL Q 01/26/12 REVISIONS REPLACEMENT SIZE: e' plit% up®Z — 1" caliper for deciduous trees, rooeha7Pno greater than I/IOtb trunk diameter, no I roots or circling room. Thus plicata: 6' height - 24" da rootbalt 7' height - 76" rootba4 8' height - 28" motball; ooba0 depth at Least 60Y width. From xnrs,mzna: 14" dia. matba0; motb0 depth at few 60% xidth. W. T6k Amelanthier alnifoln: 24" dla. rootball. 6.8' ta8 for evergreens, ruodialoo greater than 1/106 trunk diameter, no J roots or circling room. CALL 2 DAYS TREE 1/2" diameter for live stakes, harvested from dormant stock and installed between Oct IS and Mar IS, BEFORE YOU DIG REMOVAL REPLACEMENT DENSITY: 1-800-424-5555 PLAN Outside River Buffer font: 100 trees/acre ma. (including existing trees) VAthin Auer Buffer lone: IS-20' spacing for trees, 3-S' for shrubs, I•Y for cakes, saws awau I•IS' lar groundcarer 0 0 S' 10' 20' I L 0 SCALE I"=10'-0" XOATH,, �� a, � TWICE SIZE OF ROOTBALL DECIDUOUS TREE PLANTING 1 scue xrs KEEP MULCH 2.3" FROM TRUNK PROVIDE WATER SAUCER WHERE ROOM ALLOWS VERIFY WITH LANDSCAPE ARCHITECT. MIN. 3" DEPTH MULCH OF ARBORIST CHIPS. FINISH GRADE, INSTALL FERTILIZER PER SPECIFICATIONS A MFR. INSTRUCTIONS. REMOVE UNTREATED BURLAP FROM TOP 2/3 OF ROOT BALL, REMOVE TREATED BURLAP OR WIRE BASKETS COMPLETELY. BACKFILL PLANTING PIT WITH SOIL ALREADY AMENDED ON SHE. MOUND CENTER OF PLANTING PIT COMPACT TO SUBGRADE DENSITY. %1 CONIFEROUS TREE PLANTING L scw_ xrs REMOVE UNTREATED BURLAP FROM TOP 2/3 OF ROOTBALL REMOVE TREATED BURLAP 1.5 D OR WIRE BASKETS COMPLETELY. ROOTBALL CONTAINER PLANTS -SCORE ROOT KEEP MULCH 2-3" FROM INAMETEI BALLS IN 3 PLACES TO 1/2" CROWN AND TRUNK (D) DEPTH. INSTALL I' ABOVE m 0 INSTALL GROUNDCOVERS CONTAINER DEPTH. e TOP DRESSING FERTIUZER SEE SPECIFICATIONS. AS SPECIFIED 2D TYPICAL FINISHED GRADE W/ 2" LATER OF MULCH MIN. 3" DEPTH MULCH D OF ARBORIST CHIPS. OF ARBORIST CHIPS. PROVIDE WATER SAUCER FINISH GRADE OF SOIL LOOSEN ROOTS PRIOR TO PWFTI \ INSTALL FERTILIZER PER BACKFILL MINING /AAj SPECIFICATIONS AND PIT WITH SOIL ALREADY \\ MANUFACTURER'S SCORE ROOTBALL PLANTING FERTILIZER AROUND AMENDED ON SITE. \ \ / <( O \ /\ RECOMMENDATIONS. 3 PLACES TO 1/2 DEPTH ROOTBALL BACKFILL W/ SOIL AMENDED MOUND CENTER OF INSTALL I" ABOVE CONTAINER DEPTH ALREADY ON SITE PLANTING PH COMPACT TO SUBGRADE DENSITY. SHRUB PLANTING uale xrs GROUNDCOVER PLANTING Y sae xa LEAVE AT LEAST 2 MODES ABOVE GROUND INSTALL 3/4 LENGTH Y SPACING BETWEEN STARES BELOW THE GROUND i MIN. 3" DEPTH OF MULCH I OF ARBORIST (NIPS. SOIL ALREADY AMENDED ON SITE. USE PILOT HOLES IF NECESSARY WILLOW LIVE STAKE PLANTING ( [ 1 UTE NETTING EROSION CONTROL 7 uau: xrs U scat£ Nrs . 3- U[YIM MULLM Ut ORIST CHIPS. EROSION CONTROL RIC OVER EXISTING SOIL PLE BEFORE COVERING H SPECIFIED MULCH. STAPLES DRIVEN THROUGH ,NKET @ 12" O.C. iTING SOIL KEEP MULCH 2-3" FROM TRUNK MIN. 3" DEPTH MULCH OF ARBONST CHIPS. REMOVE UNTREATED BURLAP FROM TOP 213 OF ROOT BALL, REMOVE TREATED BURLAP OR WIRE BASKETS COMPLETELY. FINISH GRADE. INSTALL FERTILIZER PER SPECIFICATIONS AND MANUFACTURER'S RECOMMENDATIONS. BACKFILL PLANTING PIT WITH SOIL ALREADY AMENDED ON SITE. MOUND CENTER OF PLANTING PIT COMPACT TO SUBGRADE DENSITY. SITE PREPARATION & SOIL AMENDMENT NOTES: I. SOIL AMENDMENT SHALL OCCUR IN ENTIRE PLANTING AREA PRIOR TO PLANTING ACCORDING TO SHORELINE REGULATIONS AND BEST MANAGEMENT PRACTICES. 2. REMOVE INVASIVE SPECIES BY HAND GRUBBING PRIOR TO SOIL AMENDMENT. 3. DURING INVASIVE SPECIES REMOVAL, INSTALL JUTE NETTING NEAR THE ORDINARY HIGH WATER MARK TO PREVENT EROSION. 4. SOIL SHALL THEN BE DECOMPACTED BY AIRSPADE TO 18" DEPTH IN PLANTING AREA S. COMPOST (CEDAR GROVE OR EQUIVALENT) SHALL BE TILLED INTO ENTIRE PLANTING AREA AFTER DECOMPACTION. In\ PLANTING NOTES: I. NO GRADING SHALL OCCUR IN THE DRIPUNE OF EXISTING TREES. 2. INSTALLATION OF ALL PLANT MATERIAL WITHIN DRIPLINE OF EXISTING TREES SHALL BE PIT PLANTED. LANDSCAPE ARCHITECT IS TO BE NOTIFIED OF ANY ROOT MASS DISCOVERED DURING EXCAVATION, AND CONSULTED PRIOR TO CONTINUED WORK IN THE AREA 3. RELOCATION, PRUNING, AND REMOVAL OF EXISTING PLANT MATERIAL SHALL BE COORDINATED ON SITE BY PROJECT LANDSCAPE ARCHITECT. 4. FINAL PLANT LAYOUT TO BE APPROVED ON SITE BY PROJECT LANDSCAPE ARCHITECT PRIOR TO PLANTING. S. ALL MIN. SLOPED PLANTING AREAS TO BE CLEARED, GRUBBED, AND ROTOYATED PRIOR TO SOIL PREP. 6. PLANTING BEDS TOPSOILS PER LANDSCAPE SPECIFICATIONS. 7. LAWN AREAS PER LANDSCAPE SPECIFICATIONS. 8. ALL PLANTING BEDS TO BE TOP -DRESSED WITH 2" LAYER OF COMPOSTED MULCH, PER LANDSCAPE SPECIFICATIONS. 9. LOCATE ALL UTILITIES 48 HOURS PRIOR TO START OF WORK CONTRACTOR RESPONSIBLE FOR MAINTAINING MARKS. 10. EROSION CONTROL NETTING TO BE INSTALLED PER MANUFACTURERS AND LANDSCAPE SPECIFICATIONS ON ALL SLOPES OF 3:1 OR STEEPER NT pUiT,JFE RAEFQB.kB N51BlE W$"RfP1A(l", STOCK NOT MEETING THESE STANDARDS. 12. PLANTS MUST BE WATERED DURING DAY PERIODS UNTIL ESTABLISHED (2-3 YEARS) 2724 NE 55 Soee Solve, w.kinpw 98I05 Landscape Architects PS Phone: 206 M SOW F. 206 706 1915 MACHINE TOOLWORKS, INC. 14600 INTERURBAN AVE SOUTH TUKWILA, WA 98188 14-11 `al,\ STA7 OF WASHNGTON AEG:S7R__D PERMIT DRAWINGS DESIGNED BY: SH DRAWN BY: JK / SH / SG Date Issue 06121/12 PERMIT SUBMITTAL 07/16/12 REVISIONS Shn fitle itle Z 0 PLANTING F—SobDETAILS 1 CALL 2 DAYS & NOTES BEFORE YOU DIG SM1te , 1-800-424-5555 L-3.0 fzv 4\:--, 1. GENERA ORNOTES: OWNER RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS AND SCHEDULING ALL REQUIRED INSPECTIONS. 2. ALL WORK INCLUDING BUT NOT LIMITED TO ITEMS SUCH AS TRENCH EXCAVATION AND BACKFILL PIPE BENDING PIPE INSTALLATION, CLEANING AND TESTING, ROADWAY REPAIR ETC. SHALL CONFORM TO MUNICIPAL REQUIREMENTS AND STANDARD SPECIFICATIONS. A COPY OF THESE DOCUMENTS SMALL BE ON SITE DURING CONSTRUCTION. 3. A COPY OF THE APPROVED PLAN MUST BE ON SITE WHENEVER CONSTRUCTION IS IN PROCESS. 4. PRIOR TO CONSTRUCTION ACTIVITY, THE CONTRACTOR SHALL SCHEDULE AND ATTEND A PRECORSTRUCHON CONFERENCE WITH THE MUNICIPALITY, ARCHITECT, AND OWNER WITH NOTIFICATION OF TIME AND LOCATION. S. THE CONTRACTOR SHALL NOTIFY MUNICIPALITY, ARCHITECT, AND OWNER TWENTY-FOUR (24) HOURS IN ADVANCE OF ALL WATER SERVICE INTERRUPTIONS, HYDRANT SHUT -OFFS, AND STREET CLOSURES OR OTHER ACCESS BLOCKAGE. 6. ALL LOCATIONS OF EXISTING UTILITIES SHOWN HEREIN HAVE BEEN ESTABLISHED BY FIELD SURVEY OR OBTAINED FROM AVAILABLE RECORDS AND SHOULD THEREFORE BE CONSIDERED APPROXIMATE ONLY AND NOT NECESSARILY COMPLETE. IT IS THE SOLE RESPONSIBILITY OF THE CONTRACTOR TO INDEPENDENTLY VERIFY THE ACCURACY OF ALL UTILITY LOCATIONS SHOWN, AND TO FURTHER DISCOVER AND AVOID ANY OTHER UTILITIES NOT SHOWN HEREIN WHICH MAY BE EFFECTED BY THE IMPLEMENTATION OF THIS PLAN. 7. CONTRACTOR SHALL CONTACT AN UNDERGROUND LOCATING SERVICE AT LEAST FORTY-EIGHT (48) HOURS PRIOR TO CONSTRUCTION (BOO-424-5555) AND LOCATE AND PROTECT ALL CASTINGS AND UTILITIES DURING CONSTRUCTION 8. UTILITY SERVICE CONNECTIONS ARE TO BE MAINTAINED PRIVATELY, NOT BY THE MUNICIPALITY. THE CONTRACTOR SHALL PROVIDE FOR ALL TESTS REQUIRED BY THE STREET USE INSPECTOR 9. THE CONTRACTOR SHALL PROVIDE AND MAINTAIN TEMPORARY SEDIMENTATION COLLECTION FACILITIES TO INSURE THAT SEDIMENT -LADEN WATER DOES NOT ENTER THE NATURAL OR PUBLIC DRAINAGE SYSTEM. AS CONSTRUCTION PROGRESSES AND UNEXPECTED (SEASONAL) CONDITIONS DICTATE, MORE SILTATION CONTROL FACILITIES MAY BE REQUIRED TO INSURE COMPLETE SILTATION CONTROL OF THE PROJECT. THEREFORE, IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY HIS ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES THAT MAY BE NEEDED TO PROTECT ADJACENT PROPERTIES 10. THE CONTRACTOR SHALL KEEP OFF -SITE STREETS CLEAN AT ALL TIMES BY SWEEPING. WASHING OF THESE STREETS WITH WATER WILL NOT BE ALLOWED WITHOUT PRIOR APPROVAL OF THE MUNICIPALITY WITH JURISDICTION. 11. ALL WORK REQUIRED TO BE PERFORMED AS A MUNICIPAL SERVICE CONCERNING THE REMOVAL OR RELOCATION OF UTILITIES SHALL BE DONE AT THE CONTRACTORS EXPENSE. 12. CONTRACTOR TO MAKE SURE DRAIN LINES AND INFILTRATION TRENCHES DO NOT CONFUCT WITH THE FOOTINGS FOR STRUCTURES. ALL FOOTINGS SHALL BE MARKED AND STAKED FOR APPROVAL PRIOR TO CONSTRUCTION. 13 CONTRACTOR SHALL TAKE EAT RA CARE NOT TO DISTURB OR INCONVENIENCE SURROUNDING NEIGHBORHOOD DURING CONSTRUCTION R) A"u IF—t - C cm 5 A? FCP-g