ISA Certified Arborist Report Landscape and Tree Evaluation. Submitted To:

Arborist OnSite Horticultural Consulting Inc. 130 San Ramon Drive San Jose, California 95111 Direct 408/ 226-3427 Fax 408/ 227-9901 Robert@arboristonsite.com ISA Certified Arborist Report Landscape and Tree Evaluation Submitted To: Jay Paul Company 350 California Street Suite 1905 San Francisco, California 94104 C/o Eileen M. Griffin Project Location: 410-430 N. Mary Avenue Sunnyvale, California Submitted By: Robert Booty, Member The American Society of Consulting Arborists ISA Certified Arborist WC-4286 January 3, 2010

Table of Contents Assignment 3 Observations 3 Conclusion 3 Tree pruning requirements and specifications 4 Tree pruning specifications for 410-430 N. Mary 5 Site map; Color key to tree locations and Species 6 Carob Trees Trim Hedges 7 Plum Trees From 11-8-09 Report 8 Pine Trees, Monterey Pine Pitch Canker 9 Chinese Pistachio Trees, Trim Hedges 10 Poplar Trees, Trim Hedges 11 Liquid Amber Trees, Trim Hedges 12 Remove Excess Leaves From Around Poplar Trees 13 Magnolia Trees, Trim Ground Cover From Around Them 14 Sycamore Tree Planted Too Deep 15 Adjust Irrigation Not To Spray Tree Trunks 16 Replace Broken Tree Stakes Along Mary Avenue 17 Recommended Tree Pruning 2010 Pine Trees 18 Recommended Tree Pruning 2010 Carob Trees 19 Recommended Tree Pruning 2010 Redwood Trees 20 Recommended Tree Pruning 2010 Chinese Pistachio Trees 21 Recommended Tree Pruning 2010 Red Plum Trees 22 Recommended Tree Pruning 2010 Liquid Amber Trees 23 Action item list 5 Assumptions and Limiting Conditions 24 Certification of Performance 25 Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 2

Assignment I have been retained by Eileen Griffin who is the director of property management for the Jay Paul Company in San Francisco California. Mrs. Griffin has requested that I visit 410-430 North Mary Avenue complex in Sunnyvale, evaluate the landscaping and trees then compile a report of my findings that includes maintenance or plant health care issues at the time of my visit. It has also been requested, that I include within my report recommendations for priority tree pruning on the complex for this season. Observations I visited the site on two separate occasions December 30 & 31, 2009. My observations of the property will be discussed on pages 6-23 using site maps as a visualization tool for the location, during my discussion. Conclusions The hedges in many of the islands need to be pruned away from the tree trunks; this retains moisture near the base of the tree and will rot the root crown of the tree. There is a need for air circulation around the lower trunk; the hedges prevent that from happening. Adjust the irrigation so sprinklers are not spraying directly on the trunks of trees. This is a leading cause of tree diseases. Monterey Pine Pitch Canker The pine trees are infected with Monterey pine pitch canker. This is a fungal disease that is affecting most of the pine trees in California, if left alone the trees will eventually die. Agrifoss is a registered fungicide for the disease, together with a product called pentrabark the two are applied as a basal application to the trunk of the tree. I would recommend two applications six months apart (Jan. and July) and continue to monitor the trees for the disease. I would also remove any new infections from the trees as they manifest themselves. Note; agrifoss is a strong product and overspray will cause a temporary die back to under story plants. As the treatment is applied fresh water must be used to rinse off any over spray material from desirable under story plants. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 3

Tree Pruning Requirements and Specifications All tree-pruning operations will be conducted under the direction of an ISA Certified Arborist who will monitor and inspect the project to ensure that these pruning specifications are employed until the project is completed. All pruning must be administered by a qualified and experienced arborist; pruning shall be performed in such a manner that promotes the preservation of tree health and structure. All work performed shall be in accordance with the most current edition of the following industry standards: Performance Standards, Standard Practices for Tree Care Operations ANSI A300-1995 Appendix G; Safety Standards, ANSI, Z 133.1-1994, Appendix F; and Tree Pruning Guidelines, Appendix E. There are six types of pruning techniques that may be required for use on mature trees. Prior to entering the tree, the tree worker is required to be familiar with these types of pruning as stated in the Performance Standards, ANSI, A300-1995. Species-specific pruning promotes the natural shape of the tree (example Excurrent, decurrent, vase-shaped, fast growing, ect.) A. Types of pruning a. Crown Cleaning b. Crown Thinning c. Crown Raising d. Crown Restoration e. Crown Reduction f. Utility Pruning Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 4

Tree Pruning Specifications for 410-430 N. Mary Avenue 1) Pine Trees; crown cleaning, thinning. Focus on dead and diseased branches; provide end weight reductions removing no more than 20% of the living foliage. 2) Carob Trees; crown cleaning, thinning. Focus on developing proper branch structure with end weight reductions removing no more than 20% of the living foliage. 3) Redwood Trees; crown cleaning, thinning removing no more than 20% of the living foliage. 4) Chinese Pistachio Trees; crown cleaning, thinning. Focus on developing proper branch structure with end weight reductions removing no more than 20% of the living foliage. 5) Red Plum Trees; crown cleaning, thinning. Focus on developing proper branch structure removing no more than 20% of the living foliage. 6) Liquid Amber Trees; crown cleaning, thinning. Focus on developing proper branch structure with end weight reductions removing no more than 20% of the living foliage. Action Item List 1. Clear all the hedges away from the trunks of trees. 2. Readjust the irrigation system so that sprinklers are not hitting tree trunks. 3. The recommended trees to prune during January are pine, carob and Redwood trees. 4. Provide two basal treatments for the pine trees of agrifoss and pentrabark. 5. Replace broken tree stakes on Mary Avenue. 6. Remove accumulated leaves from around all Poplar Trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 5

Pine Trees 85 Acacia Tree 1 Site Map Tree Location and Species Color Key Carob Trees 40 Chinese Pistachio 23 Poplar Trees 110 Red Plum 139 Redwood Trees 3 Crape Myrtle 64 Sycamore Trees 30 Liquid Amber Trees 18 Magnolia Trees 14 8 13 15 Pear Trees 7 11 11 30 6 5 2 5 6 12 5 6 3 5 6 3 6 3 3 6 5 13 7 22 5 5 4 3 5 6 13 8 9 14 2 2 6 3 4 2 2 Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 6

The reddish brown flagging in the pine tree is Monterey Pine Pitch Canker. Initially I began to number each tree for treatment, until I realized every tree had the disease. This fungal disease is affecting the majority of pine trees in California, if left untreated the trees eventually die. I will describe the treatments in the conclusions section of this report. The red lines on the site map are where the pine trees are located. Monterey Pitch Pine Canker Bark Beetles Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 9

The hedge needs to be cut away from these Chinese Pistachio Trees, the same way as described for the carob trees. Pistachio trees are circled in red on map. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 10

The hedge around the poplar trees needs to be cut away just as the carob trees were. Red circles and lines are location of poplar trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 11

The leaves from these poplar trees have accumulated at the base of the trees, in some areas over a foot deep. This organic material will rot the base of the trees. Remove the leaves from around the trees. Red lines are location of poplar trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 13

The ground cover needs to be removed from around these Magnolia trees. A one foot circle should be maintained. Red lines are areas of Magnolia trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 14

These Sycamore trees are planted too deep. The soil should be brought back away from the lower trunk to expose the root flare. This condition will promote decay and the gradual decline of the health of the tree. This condition is scattered throughout the property, however not as bad as some I have already seen. The red line is the general location of these trees (sycamore) blue lines are Liquid Amber trees with the same problems. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 15

These are a few sprinklers I noticed; however there are more, that directly spray the trunk of the tree. These need to be relocated so they don t spray the tree. Keeping the trunk wet during the winter (rain) and the summer (irrigation) predisposes the tree to trunk rot, cankers, and phytophthora diseases. By redesigning the irrigation so these trees are not being wet in the summer, a lot of tree health problems can be resolved. This may be as simple as removing and capping the problem sprinkler head. These trees receive their water elsewhere on the property, such as the lawn nearby. Sprinkler heads Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 16

All the young trees that are staked along Mary Ave. should be checked regularly, this is a high traffic area and subject to vandalism. I counted 4 trees that need restaking. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 17

Recommended Tree Pruning for 2010 Winter Pruning of The Pine Trees All of the pine trees should be thinned and pruned during January-February. Specific attention should be directed to removing the branches that have died back from the Monterey Pine Pitch Canker disease. The importance here is to remove the inoculum from the tree to help manage the spread of the disease. The dead branch removal will also help to visually monitor the spread of the disease and provide an indicator as to the value of any treatments being applied. There are a total of 85 pine trees Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 18

Recommended Tree Pruning for 2010 Carob Tree Pruning All of the Carob trees should be pruned during January. There are 40 Carob trees Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 19

Recommended Tree Pruning for 2010 Redwood tree Pruning The Redwood trees should be pruned in January before any intense winter storms develop later in the season. There are 3 Redwood Trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 20

Recommended Tree Pruning for 2010 Chinese Pistachio Tree Pruning The Chinese Pistachio Trees should be pruned May-June There are 23 Pistachio Trees Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 21

Recommended Tree Pruning for 2010 Red Plum Trees All the red plum trees should be pruned May-June. 8 plum trees were subtracted from the inventory total. These were the subject of the 11-8-09 report There are 131 Red plum trees to be pruned. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 22

Recommended Tree Pruning for 2010 Liquid Amber Trees All the Liquid Amber Trees should be pruned May-June. There are a total of 18 trees. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 23

Assumptions and Limiting Conditions 1. Any legal description provided to the consultant is assumed to be correct. No responsibility is assumed for matters legal in character nor is any opinion rendered as to the quality of any title. 2. The appraiser or consultant can neither guarantee nor be responsible for accuracy of information provided by others, information not provided or disclosed. 3. The appraiser or consultant shall not be required to give testimony or to attend court by reason of this appraisal or consultation/reports unless subsequent written arrangements are made, including payment of an additional fee for services. 4. Loss or removal of any part of this report invalidates the entire appraisal or report/evaluation. 5. Possession of this report or a copy thereof does not imply right of publication or use for any purpose by any other than the persons(s) to whom it is addressed without written consent of this appraiser or consultant. 6. This report and the values expressed herein represent the opinion of the appraiser or consultant, and the appraiser s or consultants fee is in no way contingent upon the reporting of a specified value nor upon any finding to be reported. 7. Sketches, diagrams, graphs, photos, ect., in this report, being intended as visual aids, are not necessarily to scale and should not be construed as engineering reports or surveys. 8. This report has been made in conformity with acceptable evaluation/diagnostic reporting techniques and procedures, as recommended by the International Society of Arboriculture. 9. No tree described in this report was climbed, unless otherwise stated. Arborist OnSite cannot assume responsibility for any defects which could only have been discovered by climbing. A full root collar or root crown inspection, consisting of excavating the soil around the tree to uncover hidden defects or disease involving the root collar and major buttress roots, was not performed, unless otherwise stated. Arborist OnSite cannot accept responsibility for any root defects which could only have been discovered by such an inspection. Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 24

Certification of Performance I, Robert Booty, certify: That I have personally inspected the tree(s) and/or the property referred to in this report, and have stated my findings accurately. The extent of the evaluation and or appraisal is stated in the attached report and the terms and conditions; That the analysis, opinions and conclusions stated herein are my own, and are based on current scientific procedures and facts; That my compensation is not contingent upon the reporting of a predetermined conclusion that favors the cause of the client or any other party, nor upon the results of the assessment, the attainment of stipulated results, or the occurrence of any subsequent events; That my analysis, opinions, and conclusions were developed and this report has been prepared according to commonly accepted arboricultural practices; That no one provided significant professional assistance to the consultant, except as indicated within the report. I further certify that I am a Member of the American Society of Consulting Arborists, and I am an International Society of Arboriculture Certified Arborist. I have been involved in the practice of arboriculture and the care and study of trees for over 42 years. Signed: January 11, 2010 Date: Copyright 2010 Arborist OnSite Horticultural Consulting All Rights Reserved 25