Kielty Arborist Services LLC P.O. Box 6187 San Mateo, CA

Kielty Arborist Services LLC P.O. Box 6187 San Mateo, CA 94403 January 15, 2016 California Water Service Attn: Ms. Selma Vukolic 1278 Redcliff Drive San Jose, CA 95118 Site: California Water Corporation Yard, 341 North Delaware Street, San Mateo, CA Dear Ms. Vukolic, As requested on Monday, January 25, 2016, I visited the above site for the purpose of inspecting and commenting on the significant trees (trees over 6 inches in diameter at 48 inches above ground level). New construction is planned for this location and as required by the City of San Mateo a tree survey, a landscape unit work sheet and a tree protection plan will be included. Method: The significant trees on this site were located on a map provided by me. Each tree was given an identification number. This number was inscribed on a metal foil tag and nailed to the trees at eye level. The trees were then measured for diameter at 48 inches above ground level (DBH or diameter at breast height). Each tree was assigned a condition rating from 1 to 100 representing form and vitality using the following scale; 1-29 Very Poor 30-49 Poor 50-69 Fair 70-89 Good 90-100 Excellent The height of each tree was estimated and the spread was paced off. Lastly, a comments section is provided. Summary: In general, the trees at this location are in fair condition. Poor maintenance practices in the past, including toppings, has resulted in several of the trees having poor form. Topping trees will often cause them to grow with multiple leaders with poor crotches. The trees also tend to loose their apical dominance. The black pine has survived a bark beetle infestation and has improved its condition rating. Several of the camphor trees are in decline. The decline is caused by a fungal disease known as verticillium wilt. This pathogen often destroys the vascular system of the tree. The disease is usually not fatal but will leave the

California Water Corporation Yard January 15, 2016 tree in decline and disfigured. Despite year of drought the vigor of the trees has not had a significant decline. Landscape Unit Worksheet The City of San Mateo requires construction sites of this nature to submit a landscape units value for each tree over 6 inches in diameter to determine replacement value for trees that may need to be removed. The landscape unit is a calculation which assigns a numerical value to each tree. Factors used in calculating the landscape unit include: Diameter of each tree at 48 inches above ground level. Species value of each tree. Condition rating of each tree. Location rating of each tree. Identify if the tree is in the buildable area. Identify heritage trees. The builder or developer is required to install replacement trees according to the LU (Landscape Unit) Value of the trees they intend to remove. LU value for replacement trees are as follows: LU Value Replacement tree size 1 15 gallon 2 24 inch box 3 36 inch box 4 48 inch box Tree Protection Plan: Tree protection zones should be established and maintained throughout the entire length of the project. Fencing for protection zones should be 6 foot tall metal chain link supported by metal poles pounded into the ground. The location for protective fencing should be as close to the dripline as possible, still allowing room for construction to safely continue. Entire sections of the property can be fenced off providing maximum protection to groups of trees. No equipment or materials should be stored or cleaned inside protection zones. Any roots to be cut should be monitored and documented. Large roots or large masses of roots to be cut should be inspected by the site arborist. The site arborist may recommend irrigation or fertilizing at that time. Cut all roots clean with a saw or loppers. Roots to be left exposed for a period of time should be covered with layers of burlap and kept moist. Trenching for irrigation, electrical, drainage or any other reason, should be hand dug when beneath the dripline of desired trees. Hand digging and careful placement of pipes below or beside protected roots will dramatically reduce root loss, thus reducing trauma to desired trees. Trenches should be back filled as soon as possible using native materials and compacted to near original levels. Trenches to be left open with exposed roots shall KIELTY ARBORIST SERVICES P.O.Box 6187, San Mateo, CA 94403 TEL (650) 515-9783 FAX (650) 525-14639 Kkarbor0476@yahoo.com - 2 -

California Water Corporation Yard January 15, 2016 be covered with burlap and kept moist. Plywood laid over the trench will help to protect roots below. Normal irrigation should be maintained throughout the entire length of the project. All of the trees will need regular warm season irrigation. Irrigation should consist of surface flooding, with enough water to wet the entire root zone. This type of irrigation should be carried out two times per month during the warm dry season. Irrigation prior to the start of construction will improve the trees vigor and will reduce trauma from root loss. The spreading of 3 to 6 inches of wood chips will help the soil to retain moisture and will improve the soil structure. The installation of chips will also help to reduce compaction of the root zones and should be spread were compaction is expected to be heavy. This information should be kept on site at all times. 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 KIELTY ARBORIST SERVICES P.O.Box 6187, San Mateo, CA 94403 TEL (650) 515-9783 FAX (650) 525-14639 Kkarbor0476@yahoo.com - 3 -

Tree Survey Kevin R. Kielty Certified Arborist Site: California Water Department, Deleware Street, San Mateo, CA Tree # Species Nursery Group DBH (inches) Trunk Area (TA) Replacement Trunk Area (TA R ) TA incr (= TA - TA R ) Basic Tree Cost ( = TA incr x Unit Tree Cost ) Condition Location Species Rating Unit Tree Cost 1 Monterey pine 4 13.3 133 4.75 128.25 $5,013 50% 60% 30% $451 2 Deodar cedar 3 37.5 1063 2.09 1060.91 $88,215 50% 80% 90% $31,757 3 Redwood 4 31.8 739 2.09 736.91 $61,381 50% 80% 90% $22,097 4 Redwood 4 25.7 531 2.09 528.91 $44,154 50% 80% 90% $15,896 5 Redwood 4 49.5 1541 2.09 1538.91 $127,803 55% 80% 90% $50,610 6 Redwood 4 65.4 2002 2.09 1999.91 $165,983 40% 80% 90% $47,803 7 Redwood 4 43.8 1314 2.09 1311.91 $109,002 55% 80% 90% $43,165 8 Deodar cedar 3 17.8 254 2.09 251.91 $21,213 65% 80% 90% $9,928 9 Redwood 4 67.7 2067 2.09 2064.91 $171,366 55% 80% 90% $67,861 10 Ginkgo 2 19 283 4.75 278.25 $10,467 50% 80% 70% $2,931 11 Ginkgo 2 7.6 50 4.75 45.25 $1,995 60% 80% 70% $670 12 Coast live oak 3 9.4 64 3.80 60.2 $2,539 50% 80% 90% $914 13 Deodar cedar 3 38.2 1063 2.09 1060.91 $88,215 60% 80% 90% $38,109 14 Deodar cedar 3 17.4 227 2.09 224.91 $18,977 60% 80% 90% $8,198 15 Deodar cedar 3 33.7 882 2.09 879.91 $73,224 55% 80% 90% $28,997 16 Redwood 4 26 531 2.09 528.91 $44,154 45% 80% 90% $14,306 17 Douglas fir 4 12.8 133 3.60 129.4 $6,233 25% 80% 70% $873 18 Redwood 4 28.2 615 2.09 612.91 $51,111 60% 80% 90% $22,080 19 Redwood 4 30.1 707 2.09 704.91 $58,731 65% 80% 90% $27,486 20 Redwood 4 31.3 739 2.09 736.91 $61,381 60% 80% 90% $26,517 21 Redwood 4 30.8 739 2.09 736.91 $61,381 60% 80% 90% $26,517 22 Redwood 4 25.3 491 2.09 488.91 $40,842 60% 80% 90% $17,644 23 Redwood 4 38.4 1134 2.09 1131.91 $94,095 65% 80% 90% $44,036 24 Redwood 4 25.2 491 2.09 488.91 $40,842 40% 80% 90% $11,762 25 Redwood 4 42.2 1233 2.09 1230.91 $102,294 55% 80% 90% $40,508 26 Redwood 4 34.1 882 2.09 879.91 $73,224 55% 80% 90% $28,997 27 Western red cedar 3 25.9 531 2.24 528.76 $41,086 55% 80% 50% $9,039 28 Ginkgo 2 18 254 4.75 249.25 $9,413 45% 80% 70% $2,372 29 Ginkgo 2 9.3 64 4.75 59.25 $2,504 60% 80% 70% $841 30 Ginkgo 2 14.3 154 4.75 149.25 $5,777 70% 80% 70% $2,264 31 Deodar cedar 3 43.9 1314 2.09 1311.91 $109,002 65% 80% 90% $51,013 32 Deodar cedar 3 24.6 491 2.09 488.91 $40,842 60% 80% 90% $17,644 33 Southern magnolia 3 23.8 452 2.09 449.91 $37,612 60% 80% 70% $12,637 34 Douglas fir 4 29.6 707 3.60 703.4 $32,327 60% 80% 70% $10,862 35 Ginkgo 2 11.2 95 4.75 90.25 $3,631 60% 80% 70% $1,220 36 Ginkgo 2 16.6 227 4.75 222.25 $8,431 70% 80% 70% $3,305 37 Ginkgo 2 17.3 227 4.75 222.25 $8,431 65% 80% 70% $3,069 38 Ginkgo 2 17.1 227 4.75 222.25 $8,431 70% 80% 70% $3,305 39 Ginkgo 2 20.1 314 4.75 309.25 $11,594 70% 80% 70% $4,545 40 Ginkgo 2 19.8 314 4.75 309.25 $11,594 65% 80% 70% $4,220 41 Japanese Black Pine 1 19.6 314 2.24 311.76 $14,523 50% 80% 50% $2,905 42 Camphor 2 14 154 2.24 151.76 $12,042 40% 80% 50% $1,927 43 Camphor 2 18.5 283 2.24 280.76 $21,980 60% 80% 50% $5,275 44 Camphor 2 16.1 201 2.24 198.76 $15,662 50% 80% 50% $3,132 Page 1 of 2

Tree Survey Kevin R. Kielty Certified Arborist Tree # Species Nursery Group DBH (inches) Trunk Area (TA) Replacement Trunk Area (TA R ) TA incr (= TA - TA R ) Basic Tree Cost ( = TA incr x Unit Tree Cost ) Condition Location Species Rating Unit Tree Cost 45 Camphor 2 13.3 133 2.24 130.76 $10,424 50% 80% 50% $2,085 46 Camphor 2 22.5 415 2.24 412.76 $32,149 60% 80% 50% $7,716 47 Camphor 2 17.5 254 2.24 251.76 $19,746 55% 80% 50% $4,344 48 Deodar cedar 3 17.7 254 2.09 251.91 $21,213 60% 80% 90% $9,164 49 Camphor 2 18.2 254 2.24 251.76 $19,746 70% 80% 50% $5,529 50 Camphor 2 19.8 314 2.24 311.76 $24,368 65% 80% 50% $6,336 51 Camphor 2 19.2 283 2.24 280.76 $21,980 65% 80% 50% $5,715 52 Camphor 2 17.2 227 2.24 224.76 $17,666 70% 80% 50% $4,946 53 Camphor 2 14.6 177 2.24 174.76 $13,814 60% 80% 50% $3,315 54 Camphor 2 19.4 283 2.24 280.76 $21,980 65% 80% 50% $5,715 55 Camphor 2 17.4 227 2.24 224.76 $17,666 60% 80% 50% $4,240 56 Camphor 2 13 133 2.24 130.76 $10,424 65% 80% 50% $2,710 57 Camphor 2 21.5 380 2.24 377.76 $29,453 60% 80% 50% $7,069 58 Camphor 2 16.4 201 2.24 198.76 $15,662 60% 80% 50% $3,759 59 Camphor 2 17.8 254 2.24 251.76 $19,746 60% 80% 50% $4,739 60 Camphor 2 21.9 380 2.24 377.76 $29,453 60% 80% 50% $7,069 61 Coast live oak 3 8.3 50 3.80 46.2 $3,909 45% 80% 90% $1,267 62 Srawberry tree 1 10.9 95 2.09 92.91 $7,508 55% 70% 70% $2,023 63 Strawberry tree 1 5.9 28 2.09 25.91 $2,346 55% 70% 70% $632 $858,058 Page 2 of 2

Site: California Water Department Tree Evaluation Schedule Landscape Units Fate: Preserve/ Remove Species Value % Condition Value % Location Value % 0.35 Caliper Inches.70 if in allowable bldg. area 1.25 if Heritage Tree Ref. Species Name Botanical Name LU Value 1 Monterey pine Pinus radiata 30% 50% 60% 0.35 13.3 0.70 1.00 2.39 2 Deodar cedar Cedrus deodara 90% 50% 75% 0.35 37.5 1.00 1.25 45.20 3 Redwood Sequoia sempervirens 90% 55% 75% 0.35 31.8 1.00 1.25 42.16 4 Redwood Sequoia sempervirens 90% 40% 75% 0.35 25.7 1.00 1.25 24.78 5 Redwood Sequoia sempervirens 90% 55% 75% 0.35 49.5 1.00 1.25 65.63 6 Redwood Sequoia sempervirens 90% 65% 75% 0.35 65.4 1.00 1.25 102.48 7 Redwood Sequoia sempervirens 90% 55% 75% 0.35 43.8 1.00 1.25 58.07 8 Deodar cedar Cedrus deodara 90% 50% 75% 0.35 17.8 1.00 1.25 21.46 9 Redwood Sequoia sempervirens 90% 60% 75% 0.35 67.7 1.00 1.25 97.92 10 Ginkgo Ginkgo biloba 70% 50% 75% 0.35 19 1.00 1.25 17.81 11 Ginkgo Ginkgo biloba 70% 60% 75% 0.35 7.6 1.00 1.00 6.84 12 Coast live oak Quercus agrifolia 90% 60% 75% 0.35 9.4 1.00 1.00 10.88 13 Deodar cedar Cedrus deodara 90% 55% 75% 0.35 38.2 1.00 1.25 50.65 14 Deodar cedar Cedrus deodara 90% 45% 75% 0.35 17.4 1.00 1.25 18.88 15 Deodar cedar Cedrus deodara 90% 25% 75% 0.35 33.7 1.00 1.25 20.31 16 Redwood Sequoia sempervirens 90% 60% 75% 0.35 26 1.00 1.25 37.61 17 Douglas fir Pseudotsuga menziesii 70% 65% 75% 0.35 12.8 1.00 1.00 12.48 18 Redwood Sequoia sempervirens 90% 60% 75% 0.35 28.2 1.00 1.25 40.79 19 Redwood Sequoia sempervirens 90% 60% 75% 0.35 30.1 1.00 1.25 43.54 20 Redwood Sequoia sempervirens 90% 60% 75% 0.35 31.3 1.00 1.25 45.27 21 Redwood Sequoia sempervirens 90% 65% 75% 0.35 30.8 1.00 1.25 48.26 22 Redwood Sequoia sempervirens 90% 40% 75% 0.35 25.3 1.00 1.25 24.40 23 Redwood Sequoia sempervirens 90% 55% 75% 0.35 38.4 1.00 1.25 50.91 24 Redwood Sequoia sempervirens 90% 55% 75% 0.35 25.2 1.00 1.25 33.41 25 Redwood Sequoia sempervirens 90% 55% 75% 0.35 42.2 1.00 1.25 55.95 26 Redwood Sequoia sempervirens 90% 45% 75% 0.35 34.1 0.70 1.25 25.89 27 Western red cedar Thuja plicata 50% 60% 65% 0.35 25.9 0.70 1.25 12.63 28 Ginkgo Ginkgo biloba 70% 70% 75% 0.35 18 1.00 1.00 18.90 29 Ginkgo Ginkgo biloba 70% 65% 75% 0.35 9.3 1.00 1.00 9.07 30 Ginkgo Ginkgo biloba 70% 60% 75% 0.35 14.3 1.00 1.00 12.87 31 Deodar cedar Cedrus deodora 90% 60% 75% 0.35 43.9 1.00 1.25 63.50 KIELTY ARBORIST SERVICES P.O. Box 6187, San Mateo, CA 94403 kkarbor0476@yahoo.com

Fate: Preserve/ Remove Species Value % Condition Value % Location Value % 0.35 Caliper Inches.70 if in allowable bldg. area 1.25 if Heritage Tree Ref. Species Name Botanical Name LU Value 32 Deodar cedar Cedrus deodora 90% 60% 75% 0.35 24.6 1.00 1.25 35.58 33 Southern magnolia Magnolia grandiflora 70% 60% 75% 0.35 23.8 1.00 1.25 26.78 34 Douglas Fir Pseudotsuga menziesii 70% 70% 75% 0.35 29.6 1.00 1.25 38.85 35 Ginkgo Ginkgo biloba 70% 65% 75% 0.35 11.2 1.00 1.00 10.92 36 Ginkgo Ginkgo biloba 70% 70% 75% 0.35 16.6 1.00 1.25 21.79 37 Ginkgo Ginkgo biloba 70% 70% 75% 0.35 17.3 1.00 1.25 22.71 38 Ginkgo Ginkgo biloba 70% 65% 75% 0.35 17.1 1.00 1.25 20.84 39 Ginkgo Ginkgo biloba 70% 50% 75% 0.35 20.1 1.00 1.25 18.84 40 Ginkgo Ginkgo biloba 70% 40% 75% 0.35 19.8 1.00 1.25 14.85 41 Japanese Black Pine Pinus thunbergiana 50% 60% 75% 0.35 19.6 1.00 1.25 15.75 42 Camphor Cinnamomum camphora 50% 50% 70% 0.35 14 1.00 1.00 7.00 43 Camphor Cinnamomum camphora 50% 50% 70% 0.35 18.5 1.00 1.25 11.56 44 Camphor Cinnamomum camphora 50% 60% 70% 0.35 16.1 1.00 1.25 12.08 45 Camphor Cinnamomum camphora 50% 55% 70% 0.35 13.3 1.00 1.00 7.32 46 Camphor Cinnamomum camphora 50% 60% 70% 0.35 22.5 1.00 1.25 16.88 47 Camphor Cinnamomum camphora 50% 70% 70% 0.35 17.5 1.00 1.25 15.31 48 Deodar cedar Cedrus deodora 90% 65% 70% 0.35 17.7 1.00 1.25 25.89 49 Camphor Cinnamomum camphora 50% 65% 75% 0.35 18.2 1.00 1.25 15.84 50 Camphor Cinnamomum camphora 50% 70% 75% 0.35 19.8 1.00 1.25 18.56 51 Camphor Cinnamomum camphora 50% 60% 75% 0.35 19.2 1.00 1.25 15.43 52 Camphor Cinnamomum camphora 50% 65% 75% 0.35 17.2 1.00 1.25 14.97 53 Camphor Cinnamomum camphora 50% 60% 75% 0.35 14.6 1.00 1.00 9.39 54 Camphor Cinnamomum camphora 50% 65% 75% 0.35 19.4 1.00 1.25 16.89 55 Camphor Cinnamomum camphora 50% 60% 75% 0.35 17.4 1.00 1.00 11.19 56 Camphor Cinnamomum camphora 50% 60% 75% 0.35 13 1.00 1.00 8.36 57 Camphor Cinnamomum camphora 50% 60% 75% 0.35 21.5 1.00 1.25 17.28 58 Camphor Cinnamomum camphora 50% 60% 75% 0.35 16.4 1.00 1.25 13.18 59 Camphor Cinnamomum camphora 50% 45% 75% 0.35 17.8 1.00 1.25 10.73 60 Camphor Cinnamomum camphora 50% 55% 75% 0.35 21.9 1.00 1.25 16.13 61 Coast live oak Quercus agrifolia 90% 55% 75% 0.35 8.3 1.00 1.00 8.80 62 Strawberry tree Arbutus unedo 70% 55% 70% 0.35 10.9 1.00 1.00 8.39 63 Strawberry tree Arbutus unedo 70% 55% 70% 0.35 5.9 1.00 1.00 4.54 KIELTY ARBORIST SERVICES P.O. Box 6187, San Mateo, CA 94403 kkarbor0476@yahoo.com

PDF created with pdffactory trial version www.pdffactory.com