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Home My WebLink About1422 Capuchino Avenue - Technical StudyKielty Arborist Services LLC Certified Arborist WE#0476A P.O. Box 6187 San Mateo, CA 94403 ,�.�.�, � ._m. � .�; �R=., � .�� 650-515-9783 �'� � �'�,_ .� �r June 19, 2018 RC Weymeyer design and Build Attn: Ms. Katrina Hall Reweymeyer.com Site: 1422 Capuchino, Burlingame, CA Dear Ms. Hall, 1Ui_ - ;� 'I_(118 ;'4 � �` �'s!= �?IJ�;� iP��iVli- C:�1!�-r'�^4;3R�;?�•�lC=a ��"�J. As requested on Friday, June 15, 2018, I visited the above site to inspect and comment on the trees. A new home is proposed for this site and your concern for the future health and safety of the trees has prompted this visit. Method: All inspections were made from the ground; the trees were not climbed for this inspection. The trees in question were located on a map provided by you. The trees were then measured for diameter at 54 inches above ground level (DBH or diameter at breast height). The trees were given a condition rating for form and vitality. The trees condition rating is based on 50 percent vitality and 50 percent form, using the following scale. 1 - 29 Very Poor 30 - 49 Poor 50 - 69 Fair 70 - 89 Good 90 - 100 Excellent The height of the trees was measured using a Nikon Forestry 550 Hypsometer. The spread was paced off. Comments and recommendations for future maintenance are provided. 1422 Capuchino 6/19/18 Survey: Tree# Species 1 P Pin oak (Quercus palustris) 2*P Coast live oak (Quercus agrifolia) �2) DBH CON HT/SP Comments 4.1 90 20/10 Good vigor, good form, young tree, street tree. 30est 80 40/35 Good vigor, fair form, well maintained, close to neighbor's driveway, overly thinned out. 6 times diametei =15 feet 3R Cherry brush hedge 11.8 30 (Syzygium australe) 4R Lemon 8.1 10 (Citrus spp.) 15/10 Poor vigor, poor form, nearly dead, heavily topped, in decline. 15/10 NEARLY DEAD. SP/R Coast live oak 29.8 45 40/35 Good vigor, poor form, multi leader at 6 (Quercus agrifolia) feet, shared tree on property line, tree has Shared tree on property line been hedge pruned on both the property side and neighbor's property side, adjacent to existing and proposed driveway. 6 Cherry plum 10-10-8-6-5 45 (Prunus spp.) 7R Apple 11.2 35 (Mal us spp.) 8R Pear 8.2 45 (Pyrus spp.) 9R Black acacia 2"x6 40 (Acacia melanoxylon) 30/20 Fair vigor, poor form, multi leader at base with decay at base, most of tree a stump re- sprout. 20/20 Poor vigor, poor form, heavily decayed trunk. 15/12 Fair vigor, poor form, not well maintained. 20/10 Fair vigor, poor form, multi leader at base, invasive species. P-Indicates protected tree by ciry ordinance R-Indicates proposed tree removal *-Indicates tree on neighboring property 1422 Capuchino 6/19/18 (3) Summary: The trees on site are a mix of imported and native trees. Pin oak tree # 1 is a street tree that has been recently planted. This tree is in excellent condition. Street trees are required to be protected regardless of size in the city of Burlingame. The entire street tree planting pit is recommended to be fenced off. This will help to retain the existing soil structure and protect the soil from compaction within the tree's root zone as well as future root zone. Coast live oak tree #2 is located on the neighboring property to the east, only a few feet from the property line. The existing home on site is within the tree's calculated root zone of 6 times the tree's diameter. The existing home foundation likely acted as a root barrier for this tree. Roots underneath the homes foundation are expected to be nonexistent. The proposed first floor foundation near this tree will be slightly further away from the tree than the existing foundation. The existing foundation will need to be carefully removed when working near this tree. Tree protection fencing is recommended to be placed at a radius of 15 feet (6 times diameter) from this tree where possible throughout all stages of construction including demolition. Fencing will need to be placed at the existing home foundation and out to 15 feet where possible. Demolition equipment must work as far from the tree as possible to reduce the risk of compaction to the tree's root zone. Fencing at 15 feet from the tree will stop demolition equipment from being located within the tree's critical root zone. The project arborist is recommended to be called out to the site to witness the removal of the foundation near this tree, so that mitigation measures can be recommended if roots are impacted(not likely). Cherry brush #3 consist of 4 trees. The recorded diameter is the largest diameter measured out of the 4 trees. These trees are all in poor condition due to being topped in the past as well as growing in the suppressed conditions caused by the neighboring oak tree. These trees do offer some minor screening for the property. Because these trees are in poor condition they are recommended for removal. These trees are not of a protected size in Burlingame. To replace the lost screen it is recommended to replant with a native species with the same water requirements as the oak tree. The Pacific Wax Myrtle (Morella californica) would be a good replacement species in this location. Lemon tree #4 is nearly dead and should be removed. No mitigation measures would be expected to improve the trees health. This tree is not a protected tree in Burlingame. Cherry plum tree #6 is in poor condition. The tree is a stump re-sprout meaning the tree was removed in the past but no poisoned so the tree grew new trunks from the base of the tree. The tree has a good amount of fruit production. This tree can be retained but needs maintenance consisting of pruning and possible cabling. A further decay assessment is needed for this tree. This tree offers a good amount of screening for the property. (4) Apple tree #6 is in decline and recommended for removal. Heavy decay was observed on the tree's trunk making the tree hazardous. This tree is not a protected sized tree. Showing heavy decay on apple tree #6 Pear tree #8 is in poor condition. This tree is not of a protected size and no permit is required to remove the tree. Removal is recommended. Black acacia tree #9 is in poor condition. This tree is codominant at grade with 6 separate leaders. This species is extremely invasive and encouraged for removal in most cities. Removal is recommended. This tree is under the protected size in Burlingame. The following tree protection plan will help to reduce potential impacts to the retained trees on site. Showing tree hedge pruned Tree proposed for removal: Coast live oak tree #5 is located at the property line to the west. The majority of the tree is on the property, but a portion of the tree's trunk is on the neighboring property making it a shared tree. This tree has been poorly maintained in the past by both the neighbor and the previous property owner. The tree has been hedge pruned on both sides for building clearance. Pruning cuts consist of heading cuts on all of the limbs, resulting in an abundance of sprout like growth. The pruning has also created an unbalanced canopy. The tree has caused significant property damage to the existing driveway on site. The driveway is proposed to be replaced in the same location. This tree is proposed for removal in order to construct the needed property improvements. Also, the tree is hazardous as the past pruning creates a high risk of future branch failure. Because the tree is considered a shared tree, the adjacent property owner must agree to the proposed tree removal. A replacement tree will likely be needed for this tree. 1422 Capuchino 6/ 19/ 18 1422 Capuchino 6/19/18 (5) Tree Protection Plan: Tree Protection Zones Tree protection zones should be installed and maintained throughout the entire length of the project. Prior to the commencement of any Development Project, a chain link fence shall be installed at a distance of 6 times the diameter of any protected tree which will or will not be affected by the construction. Fencing for the protection zones should be 6 foot tall metal chain link type supported my 2 inch metal poles pounded into the ground by no less than 2 feet. The support poles should be spaced no more than 10 feet apart on center. Signs should be placed on fencing signifying "Tree Protection Zone - Keep Out". No materials or equipment should be stored or cleaned inside the tree protection zones. Excavation, grading, soil deposits, drainage and leveling is prohibited within the tree protection zones. No wires, signs or ropes shall be attached to the protected trees on site. Utility services and irrigation lines shall all be place outside of the tree protection zones if possible. Tree protection fencing is recommended to be installed at a distance of 6 times the diameter of the protected trees to be retained. The retained street tree #1 will need to have its planting pit completely fenced off. Fencing distances from trees to be retained Pin oak tree #1- Fencing shall be installed in a way that completely fences off the entire street tree planting pit. Coast live oak tree #2- Fencing shall be installed at a distance of 15 feet(6 times diameter) from the tree. Where not possible because of the existing foundation, fencing shall be placed at the foundation edge. Cherry plum tree #6- Fencing is recommended to be placed at a distance of 10 feet from the tree where possible. Inspections The site arborist will need to verify that tree protection fencing has been installed before the start of construction. The city of Burlingame usually requires a letter stating the fencing is in place before any permits are to be granted. The site arborist must inspect the site anytime excavation work is to take place within 6 times the diameter of a protected tree on site. It is the contractors responsibility to contact the site arborist if excavation work is to take place within 6 times the diameter of the protected trees on site. Kielty Arborist Services can be reached at kkarbor0476@yahoo.com or by phone at (650) 515-9783 (Kevin), or (650) 532-4418 (David). Root Cutting and Grading No roots are expected to be cut on this site. If for any reason roots are to be cut, they shall be monitored and documented. Large roots (over 2" diameter) or large masses of roots to be cut must be inspected by the site arborist. The site arborist, at this time, may recommend irrigation or fertilization of the root zone. All roots needing to be cut should be cut clean with a saw or lopper. Roots to be left exposed for a period of time should be covered with layers of burlap and kept moist. The site arborist must first give consent if roots over 2 inches in diameter are to be cut. 1422 Capuchino 6/19/18 (6) Landscape Barrier zone If for any reason a smaller tree protection zone is needed for access, a landscape buffer consisting of wood chips spread to a depth of six inches with plywood or steel plates placed on top will be placed where tree protection fencing is required. The landscape buffer will help to reduce compaction to the unprotected root zone. Trenching and Excavation Trenching for irrigation, drainage, electrical or any other reason shall be done by hand when inside the dripline of a protected tree. Hand digging and the careful placement of pipes below or besides protected roots will significantly reduce root loss, thus reducing trauma to the tree. All trenches shall be backfilled with native materials and compacted to near its original level, as soon as possible. Trenches to be left open for a period of time, will require the covering of all exposed roots with burlap and be kept moist. The trenches will also need to be covered with plywood to help protect the exposed roots. Irrigation Normal irrigation for the imported species to be retained (#1 and #6) should be maintained throughout the entire length of the project. The imported trees on this site will require irrigation during the warm season months. Some irrigation may be required during the winter months depending on the seasonal rainfall. During the summer months the trees on this site should receive heavy flood type irrigation 2 times a month. During the fall and winter 1 time a month should suffice. Mulching the root zone of protected trees will help the soil retain moisture, thus reducing water consumption. The trees are recommended to be irrigated by means of a soaker hose during the dry summer months. The soaker hose should be turned on once a month for 4 hours at a time. The neighbor's coast live oak tree shall not be irrigated unless its root zone is traumatized. The information included in this report is believed to be true and based on sound arboricultural principles and practices. Sincerely, Kevin R. Kielty Certified Arborist WE#0476A David P. Beckham Certified Arborist WE#10724A SN:'�l�TC4 _- f: A�+'.>. lC:�✓ t/ti'.�".4' V.i �._:�.0 � T .�,. e.ain� � *�: � �-_� -��.� � � = �°a � W : rx.-. j. .,..�_ i�.._-�....�.'R� ! _'-' x+.. � . .x i-,:-..--:,- .-.� s r s, � - ,� f ±�s Y ` � _ : g S 5,.�.;.•<��_, . _ - _ .... . � ¢„' �.._'_. ___ . _. ... _.. _ . ._. , a,..:e;�t _��- . 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