ARBORIST REPORT. Hall Equities Phase II & Granite Development Contra Costa Times Site Walnut Creek, CA. Attachment 9a

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1 Attachment 9a ARBORIST REPORT Hall Equities Phase II & Granite Development Contra Costa Times Site Walnut Creek, CA PREPARED FOR Hall Equities Group 1855 Olympic Blvd., Suite 250 Walnut Creek, CA AND Granite Development, LLC 100 E. San Marcos Blvd Suite 200 San Marcos, CA PREPARED BY 325 Ray Street Pleasanton, CA January 2016

2 Arborist Report Hall Equities Phase II and Granite Development Contra Costa Times site, Walnut Creek Table of Contents Page Introduction and Overview 1 Survey Methods 1 Description of Trees 2 Suitability for Preservation 4 Evaluation of Impacts and Recommendations 6 Appraisal of Value 11 Tree Preservation Guidelines 16 List of Tables Table 1. Tree condition and frequency of occurrence. 3 Table 2. Suitability for preservation 5 Table 3. Trees identified for removal 8 Table 4. Transplant candidates 10 Tables Appraised value of trees Attachments Tree Assessment Form Tree Assessment Map

3 Arborist Report Hall Equities Phase II and Granite Development CC Times Site Walnut Creek, CA Introduction and Overview Portions of the Contra Costa Times site in Walnut Creek will be redeveloped by the Hall Equities Group (HEG) and Granite Development. HEG is proposing to redevelop the Phase II portion of the property, including repurposing a portion of the existing building for an indoor sports facility, adding three abutting buildings, reconfiguring the parking lot and reconfiguring access along Shadelands Drive. Granite Development is proposing to redevelop the northeast corner of the property into a skilled nursing facility. was asked to prepare a combined Arborist Report addressing both development proposals for submission to the City of Walnut Creek. This report provides the following information: 1. An assessment of trees within and immediately adjacent to both project areas. 2. An assessment of the impacts of constructing both projects on the trees. 3. Recommendations for tree preservation and removal. 4. The appraise value of all surveyed trees using the techniques described in the Guide for Plant Appraisal, 9 th edition (International Society of Arboriculture). 5. Guidelines for tree preservation during the design, construction and maintenance phases. Assessment Methods Trees were assessed in May and September All trees 9 or greater in diameter, within the project area or with portions of their crowns extending into the project area, were included (per Walnut Creek Ordinance No. 1966). The assessment procedure consisted of the following steps: 1. Identifying the tree as to species; 2. Tagging each tree with an identifying number and recording its location on a map; 3. Measuring the trunk diameter at a point 54 above grade; 4. Evaluating the health and structural condition using a scale of 1 5: 5 - A healthy, vigorous tree, reasonably free of signs and symptoms of disease, with good structure and form typical of the species. 4 - Tree with slight decline in vigor, small amount of twig dieback, minor structural defects that could be corrected. 3 - Tree with moderate vigor, moderate twig and small branch dieback, thinning of crown, poor leaf color, moderate structural defects that might be mitigated with regular care. 2 - Tree in decline, epicormic growth, extensive dieback of medium to large branches, significant structural defects that cannot be abated. 1 - Tree in severe decline, dieback of scaffold branches and/or trunk; most of foliage from epicormics; extensive structural defects that cannot be abated. 5. Rating the suitability for preservation as high, moderate or low. Suitability for preservation considers the health, age and structural condition of the tree, and its potential to remain an asset to the site for years to come. High: Trees with good health and structural stability that have the potential for longevity at the site. Moderate: Trees with somewhat declining health and/or structural defects than can be abated with treatment. The tree will require more intense management and monitoring, and may have shorter life span than those in high category. Low: Tree in poor health or with significant structural defects that cannot be mitigated. Tree is expected to continue to decline, regardless of treatment. The species or individual may have characteristics that are undesirable for landscapes, and generally are unsuited for use areas.

4 Contra Costa Times site, January 2016 Page 2 Description of Trees Since all of the trees on the Contra Costa Times site have been assessed for various phases of redevelopment, tree tag numbers for the HEG Phase II and Granite Development portions of the site were not contiguous. Tag numbers for the two portions of the site include the following: HEG Phase II: # , , , ,491, 492, , , 531 and 532. Granite: #369, , , 493, and A total of 167 trees, including 124 trees on the HEG Phase II site and 43 trees on the Granite Development site, were assessed (Table 1, following page). Descriptions of each tree are found in the Tree Assessment Form and locations are plotted on the Tree Assessment Map (see Attachments). Thirty-eight (38) evergreen ash were assessed, including #528 and 529 which were just off-site to the east of the project. The majority of these were located along the Shadelands Dr. frontage, with a handful located along Mitchell Dr., adjacent to parking lots and in the undeveloped eastern portion of the site. Seventeen (17) of the trees were young, with diameters ranging from 11 to 17, 13 were semi-mature (18-24 ) and 8 were mature (25-38 ). The majority (21 trees) were in fair condition, 12 were in good and 5 in poor. Although hearty and vigorous, the trees were showing twig and branch dieback associated with a lack of irrigation, which appeared to have been shut-off. Thirty-two (32) valley oaks were assessed, with most located in the southeast portion of the site. This included a row of 14 valley oaks running north to south at the eastern edge of the parking lot, including # , 485 and 486. Twenty-one (21) were young to semi-mature, with trunk diameters between 9 and 17, and the remaining 11 were mature (19-31 in diameter). Although some had developed leans or had been suppressed by their neighbors due to close spacing, these were some of the best trees (health, structure and aesthetics) on the site (Photo 1). Seventeen (17) were in good condition, 15 were in fair and none of the valley oaks were in poor condition. Because they are native to California and did not appear to have ever received irrigation, their health had not been as affected by the current drought as some of the other species on the site. Photo 1: Looking northwest at the row of valley oaks, with #475 in the foreground. The trees were located at the edge of an undeveloped portion of the site. Although structures and forms of some had been affected by close spacing, valley oaks at the CC Times site had performed well.

5 Contra Costa Times site, January 2016 Page 3 Table 1. Tree condition and frequency of occurrence. Contra Costa Times site, Walnut Creek Common Name Scientific Name Condition Rating No. of Poor Fair Good trees (1-2) (3) (4-5) Hackberry Celtis occidentalis Italian cypress Cupressus sempervirens Red river gum Eucalyptus camaldulensis Evergreen ash Fraxinus uhdei Honey locust Gleditsia triacanthos f. inermis Calif. black walnut Juglans hindsii Hollywood juniper Juniperus chinensis 'Kaizuka' Crape myrtle Lagerstroemia indica Privet Ligustrum japonicum Sweetgum Liquidambar styraciflua Tulip poplar Liriodendron tulipifera Southern magnolia Magnolia grandiflora Mulberry Morus alba Olive Olea europaea Canary Island palm Phoenix canariensis Date palm Phoenix dactylifera Coast live oak Quercus agrifolia Holly oak Quercus ilex Valley oak Quercus lobata Coast redwood Sequoia sempervirens Mexican fan palm Washingtonia robusta Xylosma Xylosma congestum Zelkova Zelkova serrata Total % 50% 42% 100% Twenty-three (23) coast redwoods were assessed, including the two of the largest trees on the site, #462 and 463 measuring 50 and 47 in diameter, respectively. Coast redwoods at the CC Times site were mature to over-mature (22-50 in diameter). The species does not tolerate the typically dry conditions of our interior valleys and this was compounded by the apparent lack of irrigation. Twelve (12) of the coast redwoods were in fair condition, 9 were in good and 2 were in poor. Some of the better performers were located along the west side of the building near the entry (HEG Phase II portion of the site) but all showed some amount of twig and branch dieback. Ten (10) Calif. black walnuts were growing on the site, with the majority concentrated in the northeast corner of the site, adjacent to the existing maintenance building. Calif. black walnuts were young to semi-mature, with 8 of the trees having diameters between 9 and 18. Six (6) were in fair condition and 4 were in poor. Eight (8) coast live oaks were scattered across the property. These were young (6 trees) to semimature (2 trees), with diameters between 11 and 17. Six (6) were in fair condition and 2 were in good. Ten (10) Canary Island date palms, four (4) Mexican fan palms and a date palm were concentrated around the existing entries off of Shadelands Drive. All were in good condition.

6 Contra Costa Times site, January 2016 Page 4 The remaining 76 trees were represented by 15 species and included: Seven (7) sweetgums, with six (6) in fair condition and one (1) in good. Seven (7) Italian cypress in good condition. Five (5) xylosma. These were large, multi-stemmed shrubs and included 4 in fair condition and 1 in good. Four (4) Calif. black walnuts. One (1) was in poor condition and three (3) in fair. Three (3) each of holly oak and hackberry Two (2) each of red river gum, honey locust, Hollywood juniper, privet, tulip poplar, and zelkova One (1) each of crape myrtle, Southern magnolia, mulberry and olive. Average tree condition for the site was fair, with 84 trees or 50% of the population in that category. Seventy (70) trees were in good condition (42%) and 13 were in poor (8%). Table 1, previous page, provides a summary of condition by species. Walnut Creek Ordinance No defines certain native species with diameters of 9 or greater as Highly Protected. Based on this definition, 40 trees, including the 32 valley oaks and 8 coast live oaks qualified as Highly Protected. Highly Protected trees are identified in the Tree Assessment Form (see attachments). Suitability for Preservation Before evaluating the impacts that will occur during development, it is important to consider the quality of the tree resource itself, and the potential for individual trees to function well over an extended length of time. Trees that are preserved on development sites must be carefully selected to make sure that they may survive development impacts, adapt to a new environment and perform well in the landscape. Our goal is to identify trees that have the potential for long-term health, structural stability and longevity. For trees growing in open fields, away from areas where people and property are present, structural defects and/or poor health presents a low risk of damage or injury if they fail. However, we must be concerned about safety in use areas. Therefore, where development encroaches into existing plantings, we must consider their structural stability as well as their potential to grow and thrive in a new environment. Where development will not occur, the normal life cycles of decline, structural failure and death should be allowed to continue. Evaluation of suitability for preservation considers several factors: Tree health Healthy, vigorous trees are better able to tolerate impacts such as root injury, demolition of existing structures, changes in soil grade and moisture, and soil compaction than are non-vigorous trees. Structural integrity Trees with significant amounts of wood decay and other structural defects that cannot be corrected are likely to fail. Such trees should not be preserved in areas where damage to people or property is likely. Species response There is a wide variation in the response of individual species to construction impacts and changes in the environment. In our experience, for example, Calif. black walnut are sensitive to construction impacts, while coast live oak and palms are tolerant of site disturbance.

7 Contra Costa Times site, January 2016 Page 5 Tree age and longevity Old trees, while having significant emotional and aesthetic appeal, have limited physiological capacity to adjust to an altered environment. Young trees are better able to generate new tissue and respond to change. Invasiveness Species which spread across a site and displace desired vegetation are not always appropriate for retention. This is particularly true when indigenous species are displaced. The California Invasive Plant Inventory Database ( lists species identified as being invasive. Walnut Creek is part of the Central West Floristic Province. River red gum, olive and Canary Island date palm were the only species assessed at the Contra Costa Times site considered to have Limited invasiveness. Each tree was rated for suitability for preservation based upon its age, health, structural condition and ability to safely coexist within a development environment. Table 2, provides a summary of suitability ratings. Suitability ratings for individual trees are provided in the Tree Assessment Forms (see attachments). We consider trees with high suitability for preservation to be the best candidates for preservation. We do not recommend retention of trees with low suitability for preservation in areas where people or property will be present. Retention of trees with moderate suitability for preservation depends upon the intensity of proposed site changes. Table 2: Tree Suitability for Preservation Contra Costa Times site, Walnut Creek High These are trees with good health and structural stability that have the potential for longevity at the site. Thirty-eight (38) of the trees were highly suitable for preservation, including 11 valley oaks, 10 Canary Island date palms, 7 Italian cypress, 4 Mexican fan palms, 2 evergreen ash, and one (1) each of red river gum, hackberry, date palm and crape myrtle. Moderate Trees in this category have fair health and/or structural defects that may be abated with treatment. Trees in this category require more intense management and monitoring, and may have shorter life-spans than those in the high category. Eighty-six (86) of the trees were of moderate suitability for preservation, including 24 evergreen ash, 17 valley oaks, 16 coast redwoods, 6 coast live oaks, 5 xylosma, 5 sweetgums, 3 Calif. black walnuts, 2 Hollywood junipers, and one (1) each of hackberry, red river gum, holly oak, honey locust, mulberry, olive, tulip poplar, and zelkova. Low Trees in this category are in poor health or have significant defects in structure that cannot be abated with treatment. These trees can be expected to decline regardless of management. Forty-three (43) of the trees were of low suitability for preservation, including 12 evergreen ash, 7 coast redwoods, 7 Calif. black walnuts, 4 valley oaks, two (2) each of holly oak, coast live oak, sweetgum, and privet, and one (1) each of hackberry, honey locust, tulip poplar, Southern magnolia and zelkova.

8 Contra Costa Times site, January 2016 Page 6 Evaluation of Impacts and Recommendations Appropriate tree retention develops a practical match between the location and intensity of construction activities and the quality and health of trees. The Tree Assessment was the reference point for tree condition and quality. For ease of use and appropriate mitigation, I have been asked to separate the impacts by parcel/developer. HEG Phase II Potential impacts from construction were evaluated using the Preliminary Grading and Drainage Plan (sheets C3 and C4) prepared by Kier & Wright Engineers (dated September 2015) and the Landscape Plan (sheet L-1.1), prepared by Camp and Camp Associates (dated November 19, 2015). The plan depicted the design for three new buildings adjacent to the existing building. A portion of the existing building would be renovated and repurposed as an indoor sports facility. Parking lots would be added, existing parking lots would be reconfigured and bioretention basins would be incorporated across the site. Two of the existing entrances onto Shadelands Dr. would be retained (at the east and west ends of the site) and a new entrance would be added (in the middle of the site) to serve the eastern parking lot. Grading and drainage information, and accurate trunk locations for most of the trees were shown on the plans. The most significant impacts will be associated with constructing the new buildings, reconfiguring the parking lots and installing the bioswales and driveway onto Shadelands Drive. Based on my assessment of the plans, removal is required for 102 trees. The majority of the trees identified for removal would be directly impacted by the parking lot improvements (38 trees), the building improvements (25 trees) and the bioswales (18 trees). Four (4) trees were of low suitability for preservation and are considered inappropriate for retention (#463, 512, 514 and 518). Twenty-five (25) of the trees identified for removal qualified as Highly Protected. Table 3 (page 8) lists trees recommended for removal along with a description of the impacts and their Highly Protected status. I recommend preservation for 9 trees, including 5 Highly Protected trees and off-site tree #532. Preservation of trees is predicated on following the Tree Preservation Guidelines provided on page 13. A dripline encroachment permit issued by the City of Walnut Creek will be required for all 9 trees (#334, 373, 475, 478, 486, 487, 515, 517 and 532). Root and canopy pruning may be required for construction clearance and prior to grading. Root and canopy pruning recommendations are provided in the Tree Preservation Guidelines (page 16). An additional five (5) trees could be retained with modifications to the adjacent parking lots, bioswales or drive isles. This includes trees #473, 480, 481, 485 and 520. Specific recommendations for modifications to the design to provide adequate space for preservation of these trees are provided in the Tree Preservation Guidelines (page 16). Transplanting The thirteen (13) palm trees, including 8 Canary Island date palms, 4 Mexican fan palms and a date palm were of an appropriate size and condition to be considered good candidates for transplanting. Table 5 (page 11) lists trees preliminarily recommended for transplanting. A final determination of which trees can actually be transplanted can only be determined following a complete review of site constraints (infrastructure, slope, overhead utilities, etc.) by a qualified transplant contractor.

9 Contra Costa Times site, January 2016 Page 7 Although palms are relatively easy to transplant successfully, they will still require one to two years of aftercare and monitoring to ensure appropriate irrigation and cultural practices are being followed. Additional transplant considerations include if the trees will be planted immediately or if they will be stored between removal and replanting, where and how the trees will be stored, the location for replanting, and species-site compatibility. Success of transplanting decreases the longer trees are stored, and costs for maintenance increase. For best results, we recommend they be planted immediately following removal. Once a final determination of which trees will be relocated, if they will be stored or planted immediately and where they we be relocated to has been determined, detailed transplant specifications can be provided. Granite Development Potential impacts from construction were evaluated using the Site Plan and Grading Plan, prepared by Blair Church and Flynn Civil Engineers (dated November 6, 2015). The plan showed the design for a new skilled nursing facility. The building would be centrally located on the site, with a perimeter road and a parking lot along the eastern boundary. A new entrance onto Mitchell Dr. would be located in the northeast corner of the site and bioswales would be located in most of the available landscape beds. A new sidewalk would also be installed along Mitchell Drive. Grading and drainage information were shown on the plans. Limited utility information was available and accurate trunk locations were not represented. Potential impacts from construction were estimated for each tree. Precise impacts will have to be determined once trees have been accurately located and plotted, and the plans are finalized. The most significant impacts will be associated with constructing the new building and installing the perimeter road and the parking lot. Based on my assessment of the plans, removal would be required for 37 trees, including 14 that would fall within the building, 8 within bioswales, 8 within the road, 5 within the parking lot, 1 within the entry and 1 considered incompatible with the building design. Seven (7) of the trees identified for removal qualified as Highly Protected. Table 3, following page, provides a summary of the recommended action for each tree along with a description of the impacts and Highly Protected status. Based on my assessment of the plans, 6 trees can be preserved, including 3 along Mitchell Dr. (#396, 503 and 504) and three off-site trees (# ). Off-site trees will be immediately adjacent to a proposed bioswale and can be expected to experience some root loss associated with the excavation. Preservation of trees is predicated on following the Tree Preservation Guidelines provided on page 16. A dripline encroachment permit issued by the City of Walnut Creek will be required for trees #396, 503, 504 and Root and canopy pruning of trees to be preserved will likely be required for construction of the sidewalk, road and bioswales. Root and canopy pruning recommendations are provided in the Tree Preservation Guidelines that follow. Summary For the site as a whole, a total of 16 trees can be preserved under the current development proposals, including 9 trees on the HEG Phase II site and 7 on the Granite Development Site. Eight (8) of the trees identified for preservation qualified as Highly Protected (5 on the HEG Phase II site and 3 on the Granite Development site). Thirteen (13) palms located on the HEG Phase II site are being considered for transplanting (Table 5, page 11). A total of 138 trees would require removal (102 on the HEG Phase II site and 36 on the Granite Development site). Thirty-two (32) of the trees identified for removal qualified as Highly Protected (25 on the HEG Phase II site and 7 on the Granite Development site).

10 Contra Costa Times site, January 2016 Page 8 Table 3. HEG Phase II trees identified for removal Contra Costa Times site, Walnut Creek Tree Common Trunk Highly Impacts No. Name Diameter Protected? 333 Coast redwood 29 No Remove, impacted by building/hardscape 335 Coast redwood 24 No Remove, within new entry 336 Coast redwood 22 No Remove, impacted by building 337 Coast redwood 23 No Remove, within new entry 338 Coast redwood 27 No Remove, impacted by building 339 Hollywood juniper 9,7,5 No Remove, within new entry 340 Hollywood juniper 10,7,5 No Remove, impacted by bldng. 355 Zelkova 11 No Remove, within pkng. lot 356 Zelkova 14 No Remove, within pkng. lot 357 Evergreen ash 11,7 No Remove, within bldng. 358 Evergreen ash 16,12,9,8,8 No Remove, within bldng. 359 Evergreen ash 16,16,14,11,7 No Remove, within bldng. 360 Privet 12,5,4,2 No Remove, within bldng. 361 Evergreen ash 9,9,8,7,6,6 No Remove, within bldng. 362 Sweetgum 19 No Remove, within bldng. 363 Evergreen ash 28 No Remove, within sidewlk. 364 Evergreen ash 19 No Remove, within pkng. 365 Evergreen ash 24 No Remove, within pkng. 370 Evergreen ash 23 No Remove, within grading 372 Evergreen ash 18 No Remove, impacted by new entry 374 Evergreen ash 11 No Remove, within pkng. 375 Evergreen ash 22 No Remove, within bioswale 376 Evergreen ash 26 No Remove, within pkng. 378 Coast live oak 16 Yes Remove, within bioswale 379 Holly oak 14,10,8,6,6 No Remove, within bioswale 380 Red river gum 50 No Remove, within bioswale 381 Holly oak 9 No Remove, within bioswale 382 Valley oak 10 Yes Remove, within bioswale 419 Coast redwood 40 No Remove, within pkng. 420 Coast redwood 31 No Remove, within pkng. 421 Coast redwood 26 No Remove, within bioswale 422 Hackberry 18 No Remove, within bioswale 423 Hackberry 10 No Remove, within pkng. 424 Hackberry 17 No Remove, within pkng. lot 425 Coast redwood 28 No Remove, within pkng. 426 Coast redwood 43 No Remove, within hardscape 427 Sweetgum 9 No Remove, within grading 428 Sweetgum 9 No Remove, within grading 429 Coast redwood 38 No Remove, within bldng. 430 Honey locust 10 No Remove, within bldng. 431 Crape myrtle 9 No Remove, within bldng. 432 Italian cypress 15 No Remove, within bldng. 433 Italian cypress 14 No Remove, within bldng. 434 Italian cypress 11 No Remove, within bldng. 435 Italian cypress 11 No Remove, within bldng. 436 Italian cypress 10,6 No Remove, within bldng. 437 Italian cypress 12 No Remove, within bldng. (Continued, following page)

11 Contra Costa Times site, January 2016 Page 9 Table 3. HEG Phase II trees identified for removal, continued. Contra Costa Times site, Walnut Creek Tree Common Trunk Highly Impacts No. Name Diameter Protected? 438 Sweetgum 11 No Remove, within hardscape 439 Mulberry 15 No Remove, within pkng. lot 440 Southern magnolia 12 No Remove, within pkng. lot 444 Sweetgum 20 No Remove, within hardscape 446 Sweetgum 21 No Remove, within bldng. 447 Sweetgum 17 No Remove, within bldng. 448 Coast redwood 46 No Remove, within bioswale 449 Coast redwood 33 No Remove, within bioswale 450 Coast redwood 30 No Remove, within new entry 451 Honey locust 10 No Remove, within bldng. 452 Evergreen ash 35 No Remove, within pkng. 453 Evergreen ash 32 No Remove, within pkng. 455 Evergreen ash 23 No Remove, within pkng. 457 Evergreen ash 27 No Remove, within pkng. lot 458 Evergreen ash 21 No Remove, within grading 459 Evergreen ash 20 No Remove, within pkng. lot 460 Evergreen ash 22 No Remove, within grading 461 Evergreen ash 20 No Remove, within bioswale 462 Coast redwood 50 No Remove, within grading 463 Coast redwood 47 No Remove, low suitability 466 Valley oak 12,7 Yes Remove, within pkng. lot 467 Valley oak 10 Yes Remove, impacted by pkng. lot 468 Valley oak 11 Yes Remove, within pkng. lot 469 Evergreen ash 13,8,6,6 No Remove, within pkng. lot 470 Coast live oak 17 Yes Remove, within pkng. lot 471 Evergreen ash 14 No Remove, within pkng. lot 472 Valley oak 24,16 Yes Remove, impacted by bioswale 473 Valley oak 24 Yes Remove, impacted by bioswale 474 Valley oak 11 Yes Remove, impacted by bioswale 476 Valley oak 14 Yes Remove, within pkng. lot 477 Valley oak 25 Yes Remove, impacted by pkng. lot 479 Valley oak 14 Yes Remove, within bioswale 480 Valley oak 20,14 Yes Remove, impacted by pkng. lot 481 Valley oak 15,12,10 Yes Remove, impacted by pkng. lot 482 Valley oak 10,10,4 Yes Remove, within pkng. lot 483 Valley oak 9,8 Yes Remove, within bioswale 484 Calif. black walnut 13,13,13,12,10,8 No Remove, within bioswale 485 Valley oak 20 Yes Remove, impacted by pkng. lot 491 Valley oak 17 Yes Remove, within pkng. lot 492 Calif. black walnut 16 No Remove, within pkng. lot 494 Coast live oak 11 Yes Remove, within pkng. lot 495 Coast live oak 13 Yes Remove, within pkng. lot 497 Coast live oak 10,8,7 Yes Remove, within pkng. lot 506 Tulip poplar 12 No Remove, within bldng. 507 Calif. black walnut 22 No Remove, within bldng. 508 Tulip poplar 11 No Remove, within bldng. 509 Valley oak 21,13 Yes Remove, within pkng. lot 510 Evergreen ash 14 No Remove, within grading (Continued, following page)

12 Contra Costa Times site, January 2016 Page 10 Table 3. HEG Phase II trees identified for removal, continued. Contra Costa Times site, Walnut Creek Tree Common Trunk Highly Impacts No. Name Diameter Protected? 511 Evergreen ash 13 No Remove, within grading 512 Valley oak 13 Yes Remove, low suitability 513 Holly oak 10,10,7,4 No Remove, within pkng. lot 514 Calif. black walnut 11,5 No Remove, low suitability 516 Red river gum 19 No Remove, impacted by pkng. lot 518 Valley oak 9 Yes Remove, low suitability 520 Valley oak 17 Yes Remove, impacted by pkng. lot Table 4. Granite Development trees identified for removal. Contra Costa Times site, Walnut Creek Tree Common Trunk Highly Impacts No. Name Diameter Protected? 396 Canary Island palm 44 No Remove, within sidewalk 397 Evergreen ash 22, 7 No Remove, within bioswale 398 Valley oak 11 Yes Remove, within bioswale 399 Canary Island palm 50 No Remove, within sidewalk 400 Evergreen ash 14,10 No Remove, within bioswale 401 Coast live oak 9 Yes Remove, within road 402 Valley oak 14 Yes Remove, within road 403 Calif. black walnut 10 No Remove, within bioswale 404 Valley oak 22 Yes Remove, impacted by building 405 Olive 9 No Remove, within building 406 Xylosma 12 No Remove, within building 407 Calif. black walnut 9,8 No Remove, within building 408 Evergreen ash 9 No Remove, within building 409 Xylosma 11 No Remove, within building 410 Coast redwood 35 No Remove, within building 411 Coast redwood 30 No Remove, within building 412 Xylosma 10,6,5 No Remove, within building 413 Xylosma 11 No Remove, within building 414 Xylosma 10,3 No Remove, within building 415 Coast redwood 27 No Remove, within building 488 Calif. black walnut 49 No Remove, within bioswale 489 Evergreen ash 12 No Remove, within bioswale 490 Evergreen ash 14 No Remove, within bioswale 493 Coast redwood 24,22,14,13 No Remove, within road 498 Italian cypress 12 No Remove, within road 499 Coast redwood 37 No Remove, within road 500 Coast redwood 40 No Remove, within building 501 Calif. black walnut 18 No Remove, within building 502 Calif. black walnut 14,10 No Remove, within building 505 Evergreen ash 36 No Remove, incompatible with bldg. 521 Valley oak 10,7 Yes Remove, within bioswale 522 Valley oak 31 Yes Remove, within parking lot 523 Calif. black walnut 9,6 No Remove, within parking lot 524 Privet 9,5,5,3,2,2 No Remove, within parking lot 525 Evergreen ash 18 No Remove, within parking lot 526 Evergreen ash 14,12,9 No Remove, within parking lot 527 Valley oak 15 Yes Remove, within entry

13 Contra Costa Times site, January 2016 Page 11 Table 5: HEG Phase II transplant candidates Contra Costa Times site, Walnut Creek Tree # Species Trunk Highly Comments Diameter Protected? (in.) 371 Mexican fan palm 11 No Transplant candidate 377 Date palm 24 No Transplant candidate 441 Canary Island palm 40 No Transplant candidate 442 Canary Island palm 38 No Transplant candidate 443 Mexican fan palm 11 No Transplant candidate 445 Canary Island palm 44 No Transplant candidate 454 Canary Island palm 41 No Transplant candidate 456 Canary Island palm 43 No Transplant candidate 464 Canary Island palm 42 No Transplant candidate 465 Canary Island palm 53 No Transplant candidate 496 Mexican fan palm 19 No Transplant candidate 519 Canary Island palm 36 No Transplant candidate Appraisal of Value As part of the submittal requirements, Contra Costa County requires that the value of all of the surveyed trees be established prior to development. To accomplish this, I employed the standard methods found in Guide for Plant Appraisal, 9th edition (published in 2000 by the International Society of Arboriculture, Savoy IL). In addition, I referred to Species Classification and Group Assignment (1992), a publication of the Western Chapter of the International Society of Arboriculture. These two documents outline the methods employed in tree appraisal. The value of landscape trees is based upon four factors: size, species, condition and location. Size is measured as trunk diameter at 54" above grade. The species factor considers the adaptability and appropriateness of the plant in the inland valley of the East Bay Area. The Species Classification and Group Assignment lists recommended species ratings and evaluations. Condition reflects the health and structural integrity of the individual, as documented in my October 2012 assessment. The location factor considers the site, placement and contribution of the tree in its surrounding landscape. HEG Phase II The appraised value of the 9 trees recommended for preservation was $58,450 (Table 6, following page). The appraised value of the 102 trees recommended for removal was $455,500 (Table 7, following page). The appraised value of the 13 trees identified as transplant candidates was $50,500 (Table 8, page 14). Granite Development The appraised value of the 6 trees recommended for preservation was $29,700 (Table 9, page 15). The appraised value of the 36 trees recommended for removal was $157,800 (Table 10, page 15).

14 Contra Costa Times site, January 2016 Page 12 Table 6. Appraised value of HEG Phase II trees recommended for preservation Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 334 Coast redwood 24 5, Evergreen ash 27 4, Valley oak 19 9, Valley oak 24 14, Valley oak 20,12,9 11, Coast live oak 12 1, Valley oak 9 1, Evergreen ash 10,9 7, Evergreen ash 18 2,650 Total 58,450 Table 7. Appraised value of HEG Phase II trees recommended for removal. Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 333 Coast redwood 29 7, Coast redwood 24 5, Coast redwood 22 3, Coast redwood 23 5, Coast redwood 27 6, Hollywood juniper 9,7,5 1, Hollywood juniper 10,7,5 1, Zelkova 11 1, Zelkova 14 2, Evergreen ash 11,7 1, Evergreen ash 16,12,9,8,8 3, Evergreen ash 16,16,14,11,7 5, Privet 12,5,4,2 1, Evergreen ash 9,9,8,7,6,6 2, Sweetgum 19 4, Evergreen ash 28 6, Evergreen ash 19 2, Evergreen ash 24 3, Evergreen ash 23 3, Evergreen ash 18 1, Evergreen ash Evergreen ash 22 3, Evergreen ash 26 5, Coast live oak 16 3, Holly oak 14,10,8,6,6 6, Red river gum 50 16, Holly oak 9 1, Valley oak 10 1, Coast redwood 40 9, Coast redwood 31 6, Coast redwood 26 4, Hackberry 18 3, Hackberry (Continued, following page)

15 Contra Costa Times site, January 2016 Page 13 Table 7. Appraised value of HEG Phase II trees recommended for removal, continued. Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 424 Hackberry 17 3, Coast redwood 28 5, Coast redwood 43 10, Sweetgum 9 1, Sweetgum 9 1, Coast redwood 38 12, Honey locust Crape myrtle 9 1, Italian cypress 15 3, Italian cypress 14 2, Italian cypress 11 1, Italian cypress 11 1, Italian cypress 10,6 1, Italian cypress 12 1, Sweetgum 11 1, Mulberry 15 1, Southern magnolia Sweetgum 20 4, Sweetgum 21 7, Sweetgum 17 3, Coast redwood 46 11, Coast redwood 33 7, Coast redwood 30 8, Honey locust 10 1, Evergreen ash 35 9, Evergreen ash 32 5, Evergreen ash 23 3, Evergreen ash 27 5, Evergreen ash 21 1, Evergreen ash 20 1, Evergreen ash 22 3, Evergreen ash 20 1, Coast redwood 50 13, Coast redwood 47 2, Valley oak 12,7 3, Valley oak 10 2, Valley oak 11 2, Evergreen ash 13,8,6,6 1, Coast live oak 17 3, Evergreen ash 14 1, Valley oak 24,16 15, Valley oak 24 14, Valley oak 11 2, Valley oak 14 3, Valley oak 25 16, Valley oak 14 3, Valley oak 20,14 15, Valley oak 15,12,10 12, Valley oak 10,10,4 4,000 (Continued, following page)

16 Contra Costa Times site, January 2016 Page 14 Table 7. Appraised value of HEG Phase II trees recommended for removal, continued. Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 483 Valley oak 9,8 2, Calif. black walnut 13,13,13,12,10,8 6, Valley oak 20 10, Valley oak 17 1, Calif. black walnut 16 1, Coast live oak 11 2, Coast live oak 13 1, Coast live oak 10,8,7 1, Tulip poplar 12 15, Calif. black walnut 22 1, Tulip poplar Valley oak 21,13 3, Evergreen ash 14 3, Evergreen ash 13 1, Valley oak 13 2, Holly oak 10,10,7,4 2, Calif. black walnut 11, Red river gum 19 4, Valley oak Valley oak 17 7,450 Total 455,500 Table 8. Appraised value of trees transplant candidates Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 377 Date palm 24 1, Canary Island palm 40 6, Canary Island palm 38 6, Mexican fan palm Canary Island palm 44 3, Canary Island palm 41 6, Canary Island palm 43 6, Canary Island palm 42 6, Canary Island palm 53 6, Mexican fan palm 19 4, Canary Island palm 36 2, Mexican fan palm Date palm 24 1,100 Total 50,500

17 Contra Costa Times site, January 2016 Page 15 Table 9. Appraised value of Granite Development trees recommended for preservation Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 369 Valley oak 16,12,4 10, Evergreen ash 38 10, Coast live oak 11,10,10,8 4, Evergreen ash Evergreen ash 11 1, Valley oak 9 2,150 Total 29,700 Table 10. Appraised value of Granite Development trees recommended for removal. Contra Costa Times site, Walnut Creek Tree Common Name Size Appraised No. (in.) Value ($) 396 Canary Island palm 44 1, Evergreen ash 22, 7 1, Valley oak 11 2, Canary Island palm 50 1, Evergreen ash 14,10 1, Coast live oak Valley oak 14 3, Calif. black walnut Valley oak 22 12, Olive 9 1, Xylosma 12 2, Calif. black walnut 9,8 1, Evergreen ash Xylosma 11 1, Coast redwood 35 11, Coast redwood 30 6, Xylosma 10,6,5 1, Xylosma 11 1, Xylosma 10,3 1, Coast redwood 27 2, Calif. black walnut 49 9, Evergreen ash Evergreen ash 14 1, Coast redwood 24,22,14,13 9, Italian cypress 12 1, Coast redwood 37 12, Coast redwood 40 9, Calif. black walnut 18 2, Calif. black walnut 14,10 2, Evergreen ash 36 10, Valley oak 10,7 2, Valley oak 31 24, Calif. black walnut 9, Privet 9,5,5,3,2, Evergreen ash 18 2, Evergreen ash 14,12,9 2, Valley oak 15 5,850 Total 157,800

18 Contra Costa Times site, January 2016 Page 16 Tree Preservation Guidelines The goal of tree preservation is not merely tree survival during development but maintenance of tree health and beauty for many years. Trees retained on sites that are either subject to extensive injury during construction or are inadequately maintained become a liability rather than an asset. The response of individual trees will depend on the amount of excavation and grading, the care with which demolition is undertaken, and the construction methods. The following recommendations will help reduce impacts to trees from development and maintain and improve their health and vitality through the clearing, grading and construction phases. Design recommendations 1. Any plan affecting trees should be reviewed by the Consulting Arborist with regard to tree impacts. These include, but are not limited to, improvement plans, utility and drainage plans, grading plans, landscape and irrigation plans and demolition plans. 2. Evaluate the possibility of adjusting the design as described in the following table to allow for preservation of additional trees. Recommended Design Modifications HEG Phase II Tree No. Species Diameter Modification 473 Valley oak 24 Eliminate/reconfigure bioswale S. & W. to provide 15' in all directions 480 Valley oak 20,14 Eliminate parking stalls E. & W. to provide 15' in all directions 481 Valley oak 15,12,10 Eliminate parking stalls E. & W. to provide 10' in all directions 485 Valley oak 20 Eliminate drive isle S. to provide 12' in all directions 520 Valley oak 17 Eliminate parking stalls W. to provide 12' in all directions Recommended Design Modifications Granite Development Tree No. Species Diameter Modification 369 Valley oak 16,12,4 Designing the new sidewalk to provide a minimum of 5 from the trunk and to be placed on grade or as close to existing grade as possible. 527 Valley oak 15 Designing the new entry adjacent to tree to provide a minimum of 8 of clearance from the trunk 3. A TREE PROTECTION ZONE must be established for trees to be preserved, in which no disturbance is permitted. TREE PROTECTION ZONES for trees identified for preservation are provided in the table on the following page. No grading, excavation, construction or storage of materials shall occur within that zone.

19 Contra Costa Times site, January 2016 Page 17 Specific Tree Protection Zones HEG Phase II Tree No. TPZ 334, 373 & 475 Back of curb E.; DL in all other directions ' W., 12' E., 15' N., 10' S ' W.; 10' E., DL N. & S ' W.; DL E., N. & S. 515 & 517 6' W.; DL N. & S. Specific Tree Protection Zones Granite Development Tree No. TPZ 369 5' NW, 5' SW, DL in all other directions 503 8' NW, 10' NE, DL in all other directions ' NW, 15' NE, 15' SE, DL SW ' NW, 15' SE, DL in all other directions Property line SW.; dripline in all other directions 4. Tree Preservation Guidelines prepared by the Consulting Arborist should be included on all plans. 5. No underground services including utilities, sub-drains, water or sewer shall be placed in the TREE PROTECTION ZONE. To minimize impacts to trees, locate underground services to provide as much room as possible from trees identified for preservation. 6. Any herbicides placed under paving materials must be safe for use around trees and labeled for that use. 7. Irrigation systems must be designed to avoid trenching within the TREE PROTECTION ZONE. 8. Do not apply lime to soil for stabilization within 25 of trees to be preserved. Lime is toxic to tree roots. 9. Maintain the existing irrigation system. If the existing irrigation system is not functional, have a temporary system installed (using soaker hoses or pvc laid on the ground and covered with mulch) as soon as possible to supply the trees with water and help them recover and prepare them for impacts associated with the demolition and construction process. Pre-construction treatments and recommendations 1. The demolition contractor and construction superintendent shall meet with the Consulting Arborist before beginning work to discuss work procedures and tree protection. 2. Fence all trees to be retained to completely enclose the TREE PROTECTION ZONE prior to demolition, grubbing or grading. Fences shall be 6 chain link held in place with rebar staples as required by the City of Walnut Creek. Fences are to remain until all grading and construction is completed. Place weather proof signs, 2 x 2, on the fencing that read Tree Protection Zone Keep Out (eg. one sign for each of the four compass points). 3. Where possible, cap and abandon all existing underground utilities within the TPZ in place. Removal of utility boxes by hand is acceptable but no trenching should be performed within the TPZ in an effort to remove utilities, irrigation lines, etc.

20 Contra Costa Times site, January 2016 Page Tree(s) to be removed that have branches extending into the canopy of tree(s) to remain must be removed by a qualified arborist and not by demolition or construction contractors. The qualified arborist shall remove the tree in a manner that causes no damage to the tree(s) and understory to remain. Stumps shall be ground below grade. 5. Any brush clearing required within the TREE PROTECTION ZONE shall be accomplished with hand-operated equipment. 6. Any work within the TREE PROTECTION ZONE shall be approved and monitored by the Consulting Arborist. 7. Prune trees to be preserved to provide adequate clearance and correct any existing defects in structure. All pruning shall be completed by a Certified Arborist or Tree Worker and adhere to the latest edition of the ANSI Z133 and A300 standards as well as the Best Management Practices -- Tree Pruning published by the International Society of Arboriculture. 8. All tree work shall comply with the Migratory Bird Treaty Act as well as California Fish and Wildlife code to not disturb nesting birds. To the extent feasible tree pruning and removal should be scheduled outside of the breeding season. Breeding bird surveys should be conducted prior to tree work. Qualified biologists should be involved in establishing work buffers for active nests. 9. Apply and maintain 4-6 of wood chip mulch within the TREE PROTECTION ZONE. Recommendations for tree protection during construction 1. Prior to beginning work, all contractors working in the vicinity of trees to be preserved are required to meet with the Consulting Arborist at the site to review all work procedures, access routes, storage areas and tree protection measures. 2. If injury should occur to any tree during construction, it should be evaluated as soon as possible by the Consulting Arborist so that appropriate treatments can be applied. 3. Fences have been erected to protect trees to be preserved. Fences define a specific TREE PROTECTION ZONE for each tree or group of trees. Fences are to remain until all site work has been completed. Fences may not be relocated or removed without permission of the Consulting Arborist. 4. Construction trailers, traffic and storage areas must remain outside fenced areas at all times. 5. Prior to grading, pad preparation, excavation for foundations/footings/walls, trenching, trees may require root pruning outside the TREE PROTECTION ZONE by cutting all roots cleanly to the depth of the excavation. Roots shall be cut by manually digging a trench and cutting exposed roots with a saw, with a vibrating knife, rock saw, narrow trencher with sharp blades, or other approved root pruning equipment. The Consulting Arborist will identify where root pruning is required and monitor all root pruning activities. 6. All underground utilities, drain lines or irrigation lines shall be routed outside the TREE PROTECTION ZONE. If lines must traverse through the protection area, they shall be tunneled or bored under the tree as directed by the Consulting Arborist. 7. No materials, equipment, spoil, waste or wash-out water may be deposited, stored, or parked within the TREE PROTECTION ZONE (fenced area). 8. Any additional tree pruning needed for clearance during construction must be performed by a qualified arborist and not by construction personnel.

21 Contra Costa Times site, January 2016 Page If temporary haul or access roads must pass over the root area of trees to be retained, a road bed of 6 of mulch or gravel shall be created to protect the soil. The road bed material shall be replenished as necessary to maintain a 6 depth. Maintenance of impacted trees Trees preserved at the Contra Costa Times site may experience a physical environment different from that pre-development. As a result, tree health and structural stability should be monitored. Occasional pruning, fertilization, mulch, pest management, replanting and irrigation may be required. John Leffingwell Board Certified Master Arborist WE-3966B Registered Consulting Arborist #442 Attached: Tree Assessment Form Tree Assessment Map

22 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 333 Coast redwood 29 No 4 Moderate Good form and structure; twig and branch dieback; canopy starting to thin. 334 Coast redwood 24 No 4 Moderate Good form and structure; twig and branch dieback. 335 Coast redwood 24 No 4 Moderate Good form and structure; twig and branch dieback; upper canopy starting to thin. 336 Coast redwood 22 No 3 Moderate Crowded; narrow form; embedded wire at 5' S.; 8" sprout above wire; twig and branch dieback. 337 Coast redwood 23 No 4 Moderate Good form and structure; twig and branch dieback. 338 Coast redwood 27 No 4 Moderate Good form and structure; twig and branch dieback. 339 Hollywood juniper 9,7,5 No 3 Moderate Multiple attachments at base; upright form. 340 Hollywood juniper 10,7,5 No 3 Moderate Multiple attachments at base; one sided SE. away from bldg./trees. 355 Zelkova 11 No 3 Moderate Multiple attachments at 7'; canopy 20% dead. 356 Zelkova 14 No 3 Low Multiple attachments at 7'; canopy 25% dead; in small island. 357 Evergreen ash 11,7 No 3 Low Codominant trunks at base; growing through fence; one stem removed. 358 Evergreen ash 16,12,9,8,8 No 3 Moderate Multiple attachments at 2'; included bark; full crown; minor dieback. 359 Evergreen ash 16,16,14,11,7 No 3 Moderate Multiple attachments at 1'; smaller stems suppressed & leaning; one sided W.; minor dieback. 360 Privet 12,5,4,2 No 3 Low Multiple attachments at 1'; suppressed; poor form. Pgae 1

23 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 361 Evergreen ash 9,9,8,7,6,6 No 3 Moderate Multiple attachments at 1'; one sided W.; minor dieback. 362 Sweetgum 19 No 3 Moderate Codominant trunks at 12'; history of branch failures; fair structure. 363 Evergreen ash 28 No 4 High Multiple attachments at 10'; a little one sided N.; minor dieback. 364 Evergreen ash 19 No 3 Moderate Codominant trunks at 10'; leaning & one sided E.; minor dieback. 365 Evergreen ash 24 No 3 Moderate Codominant trunks at 10'; leggy form; moderate dieback. 369 Valley oak 16,12,4 Yes 4 Moderate Multiple attachments at base; crowded and onesided NE. 370 Evergreen ash 23 No 3 Low Codominant trunks at 10'; upright form; dead branches to 6". 371 Mexican fan palm 11 No 5 High Good young tree; growing against light stanchion; 5' of brown trunk. 372 Evergreen ash 18 No 3 Low Multiple attachments at 10'; crowded & one sided W. ; moderate dieback. 373 Evergreen ash 27 No 3 Moderate Multiple attachments at 10'; central leader dead; laterals S. 374 Evergreen ash 11 No 3 Low Codominant trunks at 8'; upright form; moderate dieback. 375 Evergreen ash 22 No 4 Moderate Multiple attachments at 10'; good form; minor dieback. 376 Evergreen ash 26 No 4 Moderate Multiple attachments at 10'; good form; low laterals; minor dieback. 377 Date palm 24 No 4 High Crowded; leans N.; 10' of brown trunk. Pgae 2

24 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 378 Coast live oak 16 Yes 4 Moderate Multiple attachments at 7'; fair structure; low laterals; dieback. 379 Holly oak 14,10,8,6,6 No 3 Moderate Multiple attachments at 3'; spreading form; low laterals; moderate dieback in upper crown. 380 Red river gum 50 No 4 High Multiple attachments at 10'; upright form; minor dieback. 381 Holly oak 9 No 3 Low Suppressed; one sided N. 382 Valley oak 10 Yes 3 Moderate Multiple attachments at 6'; fair branch structure. 396 Canary Island palm 44 No 5 High Good form and structure; 12' of brown trunk. 397 Evergreen ash 22, 7 No 2 Low Thin canopy; extensive dieback. 398 Valley oak 11 Yes 3 Low Suppressed; heavy lean E. 399 Canary Island palm 50 No 5 High Crowded; upright form; 10' of brown trunk. 400 Evergreen ash 14,10 No 3 Moderate Codominant trunks at 1'; upright; dieback. 401 Coast live oak 9 Yes 3 Moderate Suppressed; leans SW. 402 Valley oak 14 Yes 3 Moderate Crowded; leans SE.; ivy. 403 Calif. black walnut 10 No 2 Low Multiple attachments at 7'; central leader dead. 404 Valley oak 22 Yes 4 High Codominant trunks at 15'; slight lean E.; 405 Olive 9 No 4 Moderate Crowded; crown bowed S. 406 Xylosma 12 No 4 Moderate Large shrub; good form. 407 Calif. black walnut 9,8 No 3 Moderate Codominant trunks at base; high crown; ivy. 408 Evergreen ash 9 No 4 High Upright form; minor dieback. 409 Xylosma 11 No 3 Moderate Large shrub; crowded & one sided N. 410 Coast redwood 35 No 4 Moderate Good form and structure; canopy a little thin. 411 Coast redwood 30 No 3 Moderate Good form and structure; very thin canopy. 412 Xylosma 10,6,5 No 3 Moderate Large shrub; crowded & one sided W. 413 Xylosma 11 No 3 Moderate Large shrub; crowded & upright. 414 Xylosma 10,3 No 3 Moderate Large shrub; crowded; narrow form. 415 Coast redwood 27 No 2 Low Very thin canopy; extensive dieback. Pgae 3

25 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 419 Coast redwood 40 No 3 Low Good form and structure; canopy a little thin. 420 Coast redwood 31 No 3 Low Lost top; thin canopy. 421 Coast redwood 26 No 3 Moderate Good form and structure; thin canopy. 422 Hackberry 18 No 4 Moderate Multiple attachments at 7'; dieback in upper canopy. 423 Hackberry 10 No 3 Low Multiple attachments at 7'; one sided W.; moderate dieback. 424 Hackberry 17 No 4 High Multiple attachments at 8'; good form and structure; minor dieback. 425 Coast redwood 28 No 3 Moderate Good form and structure; thin canopy. 426 Coast redwood 43 No 3 Moderate Codominant trunks in upper canopy; thin 427 Sweetgum 9 No 3 Moderate Upright form; close to building; moderate dieback. 428 Sweetgum 9 No 3 Low Suppressed; poor form and structure; moderate dieback. 429 Coast redwood 38 No 4 Moderate Good form and structure; hangers S.; thinning. 430 Honey locust 10 No 2 Low Poor form and structure; significant dieback. 431 Crape myrtle 9 No 4 High Good form; slight lean S.; minor dieback. 432 Italian cypress 15 No 5 High Upright form; close to building. 433 Italian cypress 14 No 5 High Upright form; close to building. 434 Italian cypress 11 No 5 High Upright form; close to building. 435 Italian cypress 11 No 5 High Upright form; close to building. 436 Italian cypress 10,6 No 5 High Upright form; close to building. 437 Italian cypress 12 No 5 High Upright form; close to building. 438 Sweetgum 11 No 3 Moderate Good form; fair structure; moderate dieback. 439 Mulberry 15 No 3 Moderate Codominant trunks at 6'; extensive surface roots; moderate dieback. 440 Southern magnolia 12 No 2 Low Surface roots; extensive dieback. Pgae 4

26 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 441 Canary Island palm 40 No 5 High Good form and structure; 20' of brown trunk. 442 Canary Island palm 38 No 5 High Good form and structure; 20' of brown trunk; pillowing over curb. 443 Mexican fan palm 11 No 5 High Good young tree; 4' of brown trunk. 444 Sweetgum 20 No 3 Low Codominant trunks at 10'; crown separating; weak attachment; history of branch failure. 445 Canary Island palm 44 No 5 High Good form and structure; 10' of brown trunk. 446 Sweetgum 21 No 4 Moderate Multiple attachments at 12'; upright form; surface roots. 447 Sweetgum 17 No 3 Moderate Codominant trunks at 12'; crowded w/ crown bowed N.; included bark. 448 Coast redwood 46 No 3 Low Was codominant; stem failed N.; minor dieback. 449 Coast redwood 33 No 3 Low Good form and structure; very thin canopy. 450 Coast redwood 30 No 4 Moderate Good form and structure; thin canopy. 451 Honey locust 10 No 3 Moderate Good form; fair structure; moderate dieback. 452 Evergreen ash 35 No 4 Moderate Good form and structure; moderate dieback; surface roots. 453 Evergreen ash 32 No 3 Low Large cavity W.; topped at 20'; dieback; surface roots. 454 Canary Island palm 41 No 5 High Good form and structure; 20' of brown trunk; pillowing over sidewalk. 455 Evergreen ash 23 No 3 Moderate Multiple attachments at 10'; dieback. 456 Canary Island palm 43 No 5 High Good form and structure; 20' of brown trunk; pillowing over curb. 457 Evergreen ash 27 No 4 Moderate Multiple attachments at 10'; one sided W.; dieback. 458 Evergreen ash 21 No 2 Low Multiple attachments at 8'; extensive dieback. 459 Evergreen ash 20 No 2 Low Multiple attachments at 8'; extensive dieback. Pgae 5

27 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 460 Evergreen ash 22 No 3 Low Codominant trunks at 10'; leans S.; moderate dieback. 461 Evergreen ash 20 No 2 Low Multiple attachments at 8'; extensive dieback. 462 Coast redwood 50 No 3 Low Basal swelling; very thin canopy. 463 Coast redwood 47 No 1 Low All but dead. 464 Canary Island palm 42 No 5 High Good form and structure; 22' of brown trunk. 465 Canary Island palm 53 No 5 High Good form and structure; 20' of brown trunk. 466 Valley oak 12,7 Yes 3 Moderate Crowded; upper crown sweeps N. 467 Valley oak 10 Yes 4 Moderate Crowded; upright form. 468 Valley oak 11 Yes 3 Moderate Crowded; upper crown bowed W. 469 Evergreen ash 13,8,6,6 No 3 Moderate Multiple attachments at base; 13" stem dominant; dieback. 470 Coast live oak 17 Yes 3 Low Crowded; leans N. to horizontal; base growing against fence. 471 Evergreen ash 14 No 3 Moderate Codominant trunks at 10'; fence embeds in base; moderate dieback. 472 Valley oak 24,16 Yes 3 Moderate Codominant trunks at 4'; crowded; one sided N.; dieback. 473 Valley oak 24 Yes 4 High Codominant trunks at 10'; growing against/displacing wall; one sided NE.; dieback. 474 Valley oak 11 Yes 3 Moderate Crowded; narrow form. 475 Valley oak 19 Yes 4 High Multiple attachments at 10'; good form and structure; twig dieback. 476 Valley oak 14 Yes 3 Moderate Codominant trunks at 6'; fill at base; thin canopy; epicormics. 477 Valley oak 25 Yes 4 Moderate Multiple attachments at 6'; good form; seam SW.; dieback. Pgae 6

28 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 478 Valley oak 24 Yes 4 High Multiple attachments at 10'; good form; twig dieback. 479 Valley oak 14 Yes 3 Low Suppressed; bowed S. to horizontal. 480 Valley oak 20,14 Yes 4 Moderate Codominant trunks at 4'; good form; twig dieback; epicormics. 481 Valley oak 15,12,10 Yes 4 Moderate Multiple attachments at base; good form; dieback; epicormics. 482 Valley oak 10,10,4 Yes 3 Moderate Suppressed; one stem upright; other bowed S. to horizontal. 483 Valley oak 9,8 Yes 3 Moderate Codominant trunks at 3'; crowded; narrow, upright form. 484 Calif. black walnut 13,13,13,12,10,8 No 3 Moderate Multiple attachments at base; some stems 485 Valley oak 20 Yes 4 High Crowded; slight lean NE.; good form. 486 Valley oak 20,12,9 Yes 3 Moderate Multiple attachments at base; suppressed; one sided N. 487 Coast live oak 12 Yes 3 Moderate Suppressed; twists and turns through canopy of # Calif. black walnut 49 No 2 Low Codominant trunks at 5'; dead top; cavity in attachment with ganoderma. 489 Evergreen ash 12 No 3 Moderate Crowded; upright, narrow form. 490 Evergreen ash 14 No 4 Moderate Crook at 4'; upright form; dieback. 491 Valley oak 17 Yes 4 High Codominant trunks at 15'; slight lean W.; good form. 492 Calif. black walnut 16 No 2 Low Dead top. 493 Coast redwood 24,22,14,13 No 3 Moderate Multiple attachments at base; thin canopy. 494 Coast live oak 11 Yes 4 Moderate Crowded; slight lean W. 495 Coast live oak 13 Yes 3 Moderate Crowded; leans W. 496 Mexican fan palm 19 No 5 High Good form and structure; 50' of brown trunk. Pgae 7

29 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 497 Coast live oak 10,8,7 Yes 3 Low Multiple attachments at 2'; two W. stems removed. 498 Italian cypress 12 No 5 High Upright form. 499 Coast redwood 37 No 4 Moderate Codominant trunks at 30'; thin upper canopy. 500 Coast redwood 40 No 3 Moderate Lost top; thin canopy. 501 Calif. black walnut 18 No 3 Low Multiple attachments at 7'; moderate dieback; engulfed in ivy. 502 Calif. black walnut 14,10 No 3 Moderate Codominant trunks at 4'; dieback. 503 Evergreen ash 38 No 4 Moderate Multiple attachments at 7'; spreading form; moderate dieback. 504 Coast live oak 11,10,10,8 Yes 3 Moderate Multiple attachments at 3'; suppressed; branches to ground; borer damage. 505 Evergreen ash 36 No 4 Moderate Multiple attachments at 8'; spreading form; moderate dieback; dead branches. 506 Tulip poplar 12 No 3 Low Good form and structure; dead top. 507 Calif. black walnut 22 No 3 Low Multiple attachments at 15'; large basal wound E.; dieback. 508 Tulip poplar 11 No 4 Moderate Good form and structure; slight lean S. 509 Valley oak 21,13 Yes 4 Moderate Codominant trunks at 2'; pruning wounds; growing in medium island; dieback. 510 Evergreen ash 14 No 3 Moderate One sided S.; base growing around fence pier. 511 Evergreen ash 13 No 2 Low One sided S.; moderate dieback. 512 Valley oak 13 Yes 3 Low Upright form; base growing around fence. 513 Holly oak 10,10,7,4 No 3 Low Multiple attachments at 3'; included bark; 7" stem growing around fence. 514 Calif. black walnut 11,5 No 3 Low Growing on fence line; codominant trunks at 3'; embedded fence. 515 Valley oak 9 Yes 4 High Good young tree; growing against fence. Pgae 8

30 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 516 Red river gum 19 No 3 Moderate Codominant trunks at 7'; included bark; one sided W. 517 Evergreen ash 10,9 No 3 Moderate Codominant trunks at 3'; narrow attachment; growing against fence. 518 Valley oak 9 Yes 3 Low Base growing against #517; crown bowed N. to horizontal. 519 Canary Island palm 36 No 5 High No tag; excellent form and structure; 15' of brown trunk. 520 Valley oak 17 Yes 4 High On fence line; good form and structure; dieback. 521 Valley oak 10,7 Yes 3 Moderate Codominant trunks at 3'; embedded fence; dieback. 522 Valley oak 31 Yes 4 High Multiple attachments at 8'; heavy lateral limbs N. & S.; branches to ground; embedded fence; dieback. 523 Calif. black walnut 9,6 No 2 Low Base off-site, crown entirely on development site; codominant trunks at base; embedded fence. 524 Privet 9,5,5,3,2,2 No 3 Low Multiple attachments at base; dieback. 525 Evergreen ash 18 No 4 Moderate Codominant trunks at 6'; good form; growing on fence line. 526 Evergreen ash 14,12,9 No 3 Moderate Multiple attachments at base; growing against/embedded fence; dieback. 527 Valley oak 15 Yes 4 High Multiple attachments at 10'; growing against fence; dieback. 528 Evergreen ash 9 No 3 Low Off-site, no tag; crown bowed W. onto development site; poor form and structure. 529 Evergreen ash 11 No 4 Moderate Off-site, no tag; good form and structure; extends 15' W. onto development site. Pgae 9

31 Tree Assessment Hall Equities Group Phase II & Granite Development Contra Costa Times site, 2640 Shadelands Drive Walnut Creek, California February & May 2015 TREE SPECIES SIZE HIGHLY CONDITION SUITABILITY COMMENTS No. DIAMETER PROTECTED? 1=POOR FOR (in inches) 5=EXCELLENT PRESERVATION 530 Valley oak 9 Yes 4 High Off-site, no tag; good form and structure; extends 10' W. onto development site. 531 Mexican fan palm 11 No 5 High Off-site, no tag; good form and structure; 5' of brown trunk. 532 Evergreen ash 18 No 4 Moderate Off-site, no tag; upright form; trunk wound 15'; extends 20' W. onto development site. Pgae 10

32 Tree Assessment Map Shadelands Drive Walnut Creek, CA Prepared for: Hall Equities Group Walnut Creek, CA November 2014 Updated May 2015 & October No Scale Notes: Base map provided by: Kier & Wright, Inc. Livermore CA Driplines and numbered tree locations are approximate Ray Street Pleasanton, California Phone Fax