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Home My WebLink About8/23/2021 Item 2, Bell/Rickenbach - Staff Agenda CorrespondenceMEMORANDUM DATE: TO: FROM: SUBJECT: August 20, 2021 Tree Committee Kyle Bell, Associate Planner Item #2 ARCH-0406-2021 (600 Tank Farm Road) – Agenda Correspondence Revised Tree Removal Plan DISCUSSION The applicant met with the Interim City Arborist to identify additional trees that could be preserved. The applicant reviewed the grading plans and has made adjustments to lower the proposed number of tree removals from 47 to 26 (16 on-site, and 10 off-site). The plans have been revised accordingly to clearly indicate trees proposed for removal on and off site, the trees that are now proposed for preservation have been identified by red highlights (Attachment 1, Revised Tree Removal Plan). The project still includes planting the same number of trees proposed in the report, however, the compensatory planting plan ratio has increased from 5:1 to 9:1, still exceeding the required replanting ratio of 1:1. Staff has reviewed the revised plans and is in support of the preservation of more trees, no changes are proposed to the staff recommendation as provided in the Agenda Report. Attachment 1 – Revised Tree Removal Plan Attachment 2 – Revised Arborist Report 7677717470696872737567434241403938373635343332313029282725242322212019188517161514131211109875432184818283798078TANK FARM RDEXISTING TREEDRIPLINE, TYPICAL.TOP OF BANK PERBIOLOGICAL RESOURCESASSESSMENT BY KEVINMERK ASSOCIATES, LLC,DATED 8-14-20, TYPICAL600 TANK FARM ROADAPN: 053-421-001,053-421-006PROPERTYLINE, TYPICAL650 TANK FARM ROADAPN: 053-421-005ACACIA CREEKACACIA CREEKACACIA CREEKSCALE: 1" = 80'1.TREE INVENTORY, LOCATIONS, AND TAG NUMBERS PER ARBORIST REPORTPREPARED BY RRM DESIGN GROUP, DATED 08/06/2021.2.ALL TREES LOCATED WITHIN THE PROJECT BIOLOGIST DESIGNATEDRIPARIAN AREAS DEFINED IN THE BIOLOGICAL RESOURCE ASSESSMENT BYKEVIN MERK ASSOCIATES, DATED NOVEMBER 4, 2020, ARE TO REMAIN.3.NESTING RAPTORS ARE KNOWN TO INHABIT THE STAND OF BLUE GUMEUCALYPTUS LOCATED ALONG ACACIA CREEK. PLEASE CONSULT WITHTHE PROJECT BIOLOGIST PRIOR TO ANY TREE MAINTENANCE ORREMOVAL OPERATIONS.4.SEE SHEET A39 IN THE ENTITLEMENT DRAWING PACKAGE AND/OR C7 OFTHE VESTING TENTATIVE MAP DRAWING PACKAGE FOR SPECIES,LOCATION, AND SIZE OF PROPOSED TREE PLANTINGS.NOTESEXISTING SITE PLANTree TagBotanical NameCommon NameDiameter at BreastHeight (in.)Approx. Dripline ØDisposition1Eucalyptus globulus 'Compacta'blue gum98.545'2blue gum72.550'3blue gum33.520'Remove4blue gum53.535'5Eucalyptus globulusblue gum115.550'TREE TAG 6 NOT USED7Eucalyptus globulusblue gum71.060'Protect8blue gum112.555'Protect9Eucalyptus globulusblue gum65.540'Protect10Eucalyptus globulusblue gum60.560'11Eucalyptus globulusblue gum39.550'Protect12blue gum54.020'Protect13blue gum60.055'Protect14Eucalyptus globulusblue gum33.040'Protect15Eucalyptus globulusblue gum58.060'Protect16Eucalyptus globulusblue gum55.060'Protect17blue gum64.050'18blue gum49.530'Protect19blue gum52.030'20blue gum52.030'21blue gum71.530'22blue gum38.520'Remove23blue gum38.520'24blue gum50.020'Remove25blue gum62.020'TREE TAG 26 NOT USED27blue gum50.020'28blue gum49.520'Remove29blue gum30.540'30blue gum48.520'Remove31blue gum53.020'32blue gum26.020'Remove33blue gum32.020'34blue gum22.520'Remove35blue gum16.020'Remove36blue gum17.520'Remove37Eucalyptus globulusblue gum80.560'38Eucalyptus globulusblue gum70.060'39Eucalyptus globulusblue gum53.060'40Eucalyptus globulusblue gum44.060'41Eucalyptus globulusblue gum61.060'42Eucalyptus globulusblue gum82.060'43Eucalyptus globulusblue gum42.025'TREE TAGS 44-66 NOT USEDExisting Tree InventoryPrepared By: Jake Minnick, PLA, ISA Certified Arborist #WE-11830ADBH Measurement Height: 54"Date of Evaluation: 06/01/202168Schinus molleCalifornia pepper49.530'Remove69Schinus molleCalifornia pepper27.020'Remove70Schinus molleCalifornia pepper21.530'Remove71Schinus molleCalifornia pepper54.020'Remove72Schinus molleCalifornia pepper69.030'Remove73Schinus molleCalifornia pepper67.035'Remove74Schinus molleCalifornia pepper48.525'Remove75Schinus molleCalifornia pepper3.03'Remove76Schinus molleCalifornia pepper48.525'Remove77Schinus molleCalifornia pepper53.525'Remove78Eucalyptus globulusblue gum35.530'79Eucalyptus globulusblue gum20.020'Remove80Eucalyptus globulusblue gum7.510'Remove81Eucalyptus globulusblue gum8.56'Remove82Eucalyptus globulusblue gum5.05'Remove83Eucalyptus globulusblue gum11.015'Remove84Eucalyptus globulusblue gum54.025'Protect85blue gum47.530'ProtectExisting Tree Inventory ContinuedN:\1600\1622-02-RS20-600-Tank-Farm-Entitlements\Xrefs\XLT-1622-02-RS20.dwg, TREE MAP 24x36 (Tree Committee), Aug 16, 2021 11:10am, jrminnick August 16, 2021600 TANK FARMTREE PLANC8INDICATES AN EXISTING TREE TO REMAININDICATES AN EXISTING TREE TO REMAIN (8/16/21 REVISION)INDICATES AN EXISTING TREE TO BE REMOVEDTREE TAG NUMBERLEGENDQUANTITY60342691 MIN.3.5:1 MIN.TREE DISPOSITION TABLEEXISTINGPROTECTTOTAL REMOVALSPROPOSEDPROPOSED MITIGATION RATIO74TREES PROPOSED FOR REMOVAL ARE IN POOR HEALTH, ARE OVERCROWDED, EXHIBIT STRUCTURAL DEFECTS, ORCONFLICT WITH PROPOSED ONSITE IMPROVEMENTS, SUCH AS BUILDING LOCATIONS, A STORMWATER BASIN, A MULTI-USEPATH, AND ASSOCIATED GRADING. THESE PROPOSED IMPROVEMENTS ENCROACH INTO THE CRITICAL ROOT ZONE (CRZ)OF TREES PROPOSED FOR REMOVAL. ALL TREES PROPOSED FOR REMOVAL ARE RECOGNIZED AS INVASIVE SPECIES BYTHE CALIFORNIA INVASIVE PLANTS COUNCIL (CAL-IPC), AND EACH SPECIES HAS NATURALIZED ONSITE AND SPREAD TOOFFSITE LOCATIONS NEARBY.TREES PROPOSED FOR REMOVAL ONSITE SHOULD BE REMOVED, AND THEIR STUMPS GROUND DOWN TO A DEPTH OF 24".SEVERAL TREES PROPOSED FOR REMOVAL ARE LOCATED OFFSITE, ADJACENT TO THE WESTERN ACACIA CREEK TOP OFBANK BOUNDARY. THESE TREES SHOULD BE CUT FLUSH NEAR THE TOP OF THE ROOT COLLAR AND THE STUMPS AND ROOTSLEFT IN PLACE TO PROVIDE INTERIM STABILIZATION OF THE CREEK BANKS WHILE SUITABLE REPLACEMENT RIPARIAN SPECIESESTABLISH. THE PROJECT ARBORIST WILL FLAG TREES WITH STUMPS AND ROOTS THAT ARE TO REMAIN PRIOR TO THEINITIATION ANY TREE WORK.OFFSITE TREES PROPOSED TO REMAIN ALONG ACACIA CREEK SHOULD BE PRUNED UNDER THE DIRECTION OF THEPROJECT ARBORIST. IT HAS BEEN DETERMINED THAT ALL TREES TO REMAIN CAN BE PRUNED TO ACCOMMODATE THEPROPOSED PROJECT. IN GENERAL, TREES TO REMAIN HAVE NOT BEEN MAINTAINED IN MANY YEARS. MANY HAVE LARGEAMOUNTS OF DEAD WOOD THROUGHOUT THE CROWN, AND SEVERAL HAVE UNBALANCED CROWNS. MOST WILLREQUIRE A CROWN CLEANING TO REDUCE RISK ASSOCIATED WITH DEAD LIMB DROP AND SEVERAL WILL REQUIRE ACROWN REDUCTION TO ENSURE A BALANCED CROWN.A TREE REPLACEMENT PLAN IS PROPOSED FOR BOTH ONSITE AND OFFSITE TREE REMOVALS AT A MINIMUM 3.5:1REPLACEMENT RATIO. THIS EXCEEDS THE REQUIRED 1:1 REPLACEMENT RATIO SET FORTH IN CHAPTER 12.24 TREEREGULATIONS OF THE SAN LUIS OBISPO MUNICIPAL CODE BY 3.5X. ONSITE REPLACEMENT TREE SPECIES ARE PROPOSEDAS A MIXTURE OF NATIVE AND NON-NATIVE SELECTIONS BASED ON THEIR PROVEN SUCCESS UNDER LOCAL CLIMATICAND SOIL CONDITIONS.PRUNING, REMOVAL, AND REPLACEMENT PLANProtectProtectProtectProtectProtectProtectProtectProtectProtectProtectProtectRemoveProtectProtectProtectRemoveProtectProtectProtectProtectProtectProtectProtectTree TagBotanical NameCommon NameDiameter at BreastHeight (in.)Approx. Dripline ØDisposition67Eucalyptus globulusblue gum55.545'ProtectONSITE REMOVALSOFFSITE REMOVALS1610Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'Eucalyptus globulus 'Compacta'