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HomeMy WebLinkAbout7.1 WildfireMgmtPlanAmendSUBJECT: CITY CLERK FILE #420-20 & 540-70 File I1 1 101-1 11Ot AGENDA STATEMENT "/'O -- CITY councIL MEETING DATE: March S, 2002 Amendments to the Wildfire Management Plan Report Prepared By: James R. Ferdinand, Fire Marshal ATTACHMENTS: RECOMMENDATION: 1. Resolution amending the Wildfire Management Plan 2. Draft Amended Wildfire Management Plan 3. Findings of Fact 4. Removal Requirements Adopt Resolution amending the Wildfire Management Plan FINANCIAL STATEMENT: None DESCRIPTION: including reformatting the document Heritage Trees. Staff recqmmends amending the Wildfire Management Plan and incorporating a new standard for construction on lots containing The City Council previously amended the Wildfire Management Plan by adoption of Resolution No. 24- 01, which included changes to the Plan's provisions for protection of the City's Heritage Trees. Among those changes was a requirement that steel components be used for under floor construction. The attached resolution, Attachment 1, would amend Item 3, Page 7, of the Wildfire Management Plans regulations for Construction of Structural Members in the section dealing with Modified Construction Requirements for Lots Containing Fire Resistive Heritage Trees, as adopted by Resolution 24-01. The new provision would substitute fire rated material for the current requirement that steel structural members be used for under floor construction. Fire rated materials are defined in the Building Code as construction to resist the spread of fire, which includes stucco and special fire rated sheet rock. Findings of fact similar to those adopted for Resolution 24-01 have been created to support the changes and will be submitted to the State Building Standards Commission as required. See Attachment 3. In order to meet the intent of the Wildfire Management Plan and protect Heritage Trees, the Removal Requirements have been modified. The Removal Requirements have been developed by Alameda County Fire Department and are included by reference, in the Fire Code ,adoption. The Fire Chief has the authority to review, revise and approve the standard. See Attachment 4. Staff has reviewed the proposed amendments against the 1998 California Fire Code and found them in compliance the Code. RECOMMENDATION: It is staff's recommendation that the City Council adopt the Resolution amending the Wild Fire Management Plan. m m m m m m m m m m m m m mm m m m m m m m m m m m m ! m m m m m m m m m m m mm m m mm m m m mm ! m mm ! m ! m ~ ~ mm m m m m m m mm m m mm ! m mm m #~ ! I m m m m m m mm m m mm m m ! m! m m m mm m m m m COPIES TO: ITEMNO. rT.[ RESOLUTION NO. - 02 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF DUBLIN APPROVING AMENDMENTS TO THE WILDFIRE MANAGEMENT PLAN WHEREAS, the Wildfire Management Plan was adopted by Resolution 84-96 on July 9, 1996 which requires specific construction methods, fire resistive materials, tree trimming and vegetation management within fire buffer zones, and, WHEREAS, Chapter 5.60 of the Dublin Municipal Code is the City's Heritage Tree Ordinance which protects specific trees within the City of Dublin, and WHEREAS, Resolution 24-01 was adopted February 20, 2001, which identifies specific Heritage Trees and construction methods specifically related to trimming and pruning of Heritage Trees may adversely impact the health of the tree, and WHEREAS, certain Heritage Trees are more fire resistive than others, therefore trimming and pruning requirements can be modified to remain compliant with the 1998 California Fire Code and to provide alternate means of protection for the tree and buildings within fire buffer zones, and WHEREAS, the City's Building Official has recommended that the City Council revise the Wildfire Management Plan to allow the use of rated construction in the enclosure of under floor areas rather than steel support structures as set forth in Item 3, Construction of Structural Members in the section dealing with Modified Construction Requirements for Buildings/Lots Containing Fire Resistive Heritage Trees, on page 7 attached as exhibit A: and WHEREAS, the City Council finds the Wildfire Management Plan set forth in Attachment 2 is reasonably necessary because of local climatic, geological, and topographical conditions. As documented in Section 8.2.2 of the Dublin General Plan with respect to western Dublin, and Section 8.3.2 of the Eastern Dublin Specific Plan and Section 3.4 of the Eastern Dublin EIR with respect to eastern Dublin, the risk of wildfire is particularly great for residential development adjacent to undeveloped open space lands~ Within Dublin, such areas may be dry, windy areas, or remote, hilly areas where accessibility might be limited as set forth in the Findings of Fact in Attachment 3. NOW, THEREFORE, BE IT RESOLVED that Item 3, Construction of Structural Members, Modified Construction Requirements for Lots Containing Fire Resistive Heritage Trees on page 7 of the Wildfire Management Plan is hereby amended to read as set forth in Exhibit A. PASSED, APPROVED AND ADOPTED this day of ,2002. AYES: NOES: ABSENT: ABSTAIN: ATTEST: City Clerk Mayor K2/G/3-5-02/res~wildfirepln. doc (Item 7.1) ATTACHMENT 1 t DRAFT AMENDMENTS TO THE WILDFIRE MANAGEMENT PLAN [MODIFICATIONS] The entire document has been reformatted to incorporate the Heritage Tree Requirements and changes as follows: Page 7 - Removed the existing subparagraph and added the following to Construction Requirements for Buildings on Lots or Parcels Adjacent to Open Space and Undeveloped Landing. Modified Construction Requirements for Buildings/Lots Containing Fire Resistive Heritage Trees Proposed Language: e Construction of Structural Members: Structural members used in the construction of all under floor areas shall be protected to a minimum of one- hour rating. Under floor areas of structure and decks shall be enclosed to the ground with exterior walls rated as required in Item #1 Exterior Walls above. City of Dublin Wildfire Management Plan I I ADOPTED: July 9, 1996 Resolution No. 84-96 REVISED: March 5, 2002 Resolution No. -02 ATTACHMENT 2 City of Dublin - Wildfire Management Plan Implementation Guideline Responsible Parties Timing Action City Determine Future · Provide Wildfire Management Plan to · Planning Development Developer Developer Development Initiation · Determines Open Space Ownership · Proposes Maintenance Program · Identifies Funding Source City · Community Development · Fire · Finance Developer City · Community Development · Fire · Finance City · Fire · Building · Finance Property Owner City · Fire Community Development City · Master Tentative Map Tentative Map Development Agreement Site Development Review Planned Development Building Plan Approval Final Construction Inspection and Sign-off Transfer of Property Inspection in conjunction with annual Weed Abatement Program Citizen complaints All Permit applications on affected properties Proposed changes by the City or others that impact the Habitat · Records Ownership · Records Maintenance Program · Approves Funding Source · Certification of Fees Developer Submits- · Design of Fire Buffer Zone · Maintenance and Irrigation Plan · Maintenance Plan for Open Space · Maintenance Specifications and Budget · Preliminary Landscape Plan for Private Property · Vicinity Plan · Wildfire Management Plan Specification Met · Certification of Fees · Certification all requirements satisfied · Certification all fees are current Notify purchaser of open space ownership, maintenance and funding responsibilities by recording on title. Inspect Properties for Compliance with Wildfire Management Plan Requirements Evaluate Wildlife Habitat City of Dublin - Wildfire Management Plan Purpose The purpose of this plan is to reduce the risk of open land wildfire to the lowest practical level consistent with reasonable protection of wildlife habitat and other open space values Authority, Adopted by Dublin City Council Resolution 84-96 dated July 9, 1996. Amended by Resolution 24-01, March 20, 2001, Revised by Resolution -02, January 2002. Requirements This plan will satisfy the requirements as follows: Implementation of the Wildfire Management Plan is the responsibility of the City of Dublin. Vegetation and habitat (in open space) will only change as a result of natural forces or other actions (weed abatement), since this plan does not impose requirements into the open space. This plan provides for the development of a Fire Buffer Zone between open space/undeveloped lands and developed properties; therefore, no additional brush control measures are required where this plan is utilized. Vegetation growth within areas affected by this plan will be monitored in two ways. First, all areas will be inspected in accordance with the Fire Department's Abatement Program. Second, whenever any building, grading or other activity affects open space/undeveloped lands or the Fire Buffer, reevaluation will take place. Wildlife habitat will be evaluated by the City when there is any proposed change in open space/undeveloped lands. Applicability This Wildfire Management Plan applies to all new development within the City of Dublin. Definitions Adjacent to Open Space - This refers to commercial parcels and residential lots which have a point of contact with open space. Adjacent to Undeveloped Land - This refers to Commercial parcels and residential lots which have a point of contact with Undeveloped Land. Fire Buffer Zone - Treatment of land as identified in the "Vegetation Establishment and Maintenance Guidelines" as areas A, B, C and D. WMP - 2 - City of Dublin - Wildfire Management Plan Fire Resistive Heritage Trees - Coast Live Oak, Valley Oak, Blue Oak, or California Buckeye trees that otherwise qualify as Heritage Trees under the Heritage Tree Ordinance, Chapter 5.60 of the Dublin Municipal Code Irrigated - To supply water to the Fire Buffer Zone artificially by means of pipes, pumps, etc. Landscape Plan - This plan specifies the plantings, which are to be utilized in areas A, B, C, and D of the Fire Buffer Zone. Open Space - For the purpose of this plan, Open Space is defined as those lands set.aside to remain permanently undeveloped. Undeveloped Land - For the purpose of this plan, Undeveloped Land is that land which is available for development but no Tentative Map, Master Tentative Map or Development Agreement has been approved, and any land designated for government use for which no development plan has been approved. Vicinity Plan - Areas within 300 feet of boundaries or property lines of subdivisions, commercial parcels and residential lots. Vicinity plans include property lines, structures, slop, vegetation, fuel breaks, water supply systems and access roads. Alternative Methods / Appeals An applicant wishing to use alternative methods shall submit their request to the Deputy Fire Marshal in accordance with the California Fire Code, Section 103 as amended by the city. An applicant wishing to appeal a requirement placed on them by this plan shall file their appeal in accordance with the California Fire Code, Section 103 as amended by the city. Ownership and Financing of Maintenance for Open Space The city requires that a responsible entity be selected or formed to provide ownership and maintenance of Open Space. The City also requires that the owner of record and maintenance responsibilities be disclosed to potential purchasers of property. The City will evaluate each proposed project to determine ownership of the Open Space affiliated with the project. A determination of ownership and maintenance will be made in the Master Tentative Map, Tentative Map, Development Agreement or in conjunction with the Tract Map approval process. Maintenance responsibility will be assigned to the Owner of record at this time. The following are types of approved ownership in the City of Dublin: City Ownership - When the City determines that the needs will be best served by City ownership of the Open Space, the developer will be required to prepare the land according to approved specifications prior to transfer of ownership to the City. WMP - 3 - City of Dublin - Wildfire Management Plan Developer/Homeowner Association Ownership - When the developer retains control of the Open Space, the City will require that the developer post a bond adequate to ensure Fire Buffer Zone development. The development agreement will specify performance standards to be met regarding Open Space maintenance and development of the Fire Buffer Zone. Other Governmental Agency Ownership - Only with the City's approval will the ownership of Open Space be transferred to another governmental body. Maintenance Sources When not in conflict with other City policies maintenance of Open Space will be the responsibility of one party. City Provided - when the City elects to maintain Open Space, all associated expenses are the responsibility of the City. Homeowner Association Provided - When ownership of the Open Space is by a Homeowners Association, all maintenance shall be in accordance with City specifications at the expense of the Homeowners Association. Other Governmental Agency Provided - When ownership of the Open Space is by another Governmental Agency, all maintenance shall be in accordance with City specifications at the expense of the Governmental Agency. Potential Funding Sources for Maintenance The City shall determine which is the most appropriate method of funding Open Space maintenance. Funding methods include: · New Assessment District · Annexation to Existing Assessment District · Private funding from Homeowner Association or similar body Notice to Owners The developer will be responsible for disclosing to all purchasers of property the ownership and maintenance responsibilities and funding mechanism for Open Space, which is affiliated with the purchaser's property. In addition to any notices required by law, this disclosure shall be recorded on the title at the time of sale of the property. WMP 4 City of Dublin - Wildfire Management Plan Plan Submittal Requirements Plans shall be submitted and will be reviewed for compliance with the Wildfire Management Plan in accordance with the following schedule: Planned Development Rezoning Review - Plans submitted for PDR review shall include the following: · Design of the Fire Buffer Zone · Preliminary landscape plan for privately owned properties · Vicinity Plan Tentative Map - Map submittals shall include: · Ownership of Open Space and the Fire Buffer Zone · Maintenance of the Open Space and Fire Buffer Zone · Funding mechanism for maintenance of Open Space and Fire Buffer Zone Site Development Review - Plans submitted for SDR review shall include the following: · Design of the Fire Buffer Zone · Maintenance Specifications · Maintenance and Irrigation Plan for the Fire Buffer Zone · Maintenance plan for the Open Space · Budget for the Maintenance Program · Preliminary landscape plan for privately owned properties · Vicinity Plan Building Plan Review- Building plan submittal shall include the following: · Construction requirements for specific properties adjacent to Open Space or Undeveloped Lands · Final landscape plans Final Approval Prior to Occupancy - All sites, tracts and buildings will be subject to final inspection by each approving department. Final approval shall be granted only after all conditions placed by each department have been complied with. Fees - All fees related to the development must be current prior to any processing or approval of the following actions: · PD Rezone · Tentative Map Approval · Site Development Review · Building Permit Issuance · Final Inspection and Occupancy WMP - 5 - City of Dublin - Wildfire Management Plan Construction Requirements for Buildings Adjacent to Open Space or Undeveloped Land Automatic Fire Sprinkler System - Automatic Fire Sprinkler Systems shall be required in all buildings that are adjacent to Open Space or Undeveloped Land. The installation of the Automatic Fire Sprinkler System shall be in accordance with approved City standards. Roof Covering - Roof covering shall be Class A rated. For roof coverings where the profile allows a space between the covering and decking, the space at the eave ends shall be fire stopped precluding entry of embers or flames. Roof decking shall be solid. Space sheathing shall be prohibited. Protection of Eaves - Eaves on the side of the building facing the Open Space or Undeveloped Space shall be protected on the exposed underside by materials approved for one-hour fire resistive construction. Fascias shall be constructed as to be protected on the backside by materials approved for one-hour fire resistive construction, or 2-inch nominal dimension lumber. Gutters and Downspouts - Gutters and downspouts shall be constructed of noncombustible materials. Exterior Walls - Exterior walls on the side of the building facing the Open Space or Undeveloped Space shall be constructed of materials approved for one-hour fire resistive construction or with noncombustible materials. Exception - Heavy Timber Construction. Such shall extend from the top of the foundation to the underside of the roof sheathing. Unenclosed Under-floor Protection - Buildings or structures shall have all under-floor areas enclosed to the ground with approved exterior wall materials on the side of the building facing the Open Space or Undeveloped Space. Exception - Complete enclosures may be omitted where the underside of all exposed floors, structural columns, beams and supporting walls are protected as required for exterior wall, one- hour fire resistive construction or heavy timber construction. Appendages and Projections - Unenclosed accessory structures attached to buildings with habitable spaces and projections, such as decks, shall be of one-hour fire resistive construction, heavy timber construction or constructed with noncombustible materials. When the attached structure is located and constructed so that the structure or any portion thereof projects over a descending slope surface, the area below the structure shall have all under floor areas enclosed. Windows - Exterior windows, window walls and skylights shall be tempered glass, multi- layered glazed panels or dual pane construction. Exterior Doors - Exterior doors, other than vehicular access doors, shall be non-combustible or solid core construction of not less than 1 3¼ inch thick. When windows are within doors, they shall be of tempered glass or multi-layered glazed panels. City of Dublin - Wildfire Management Plan Vents - Attic ventilation openings, foundation or under floor vents, or other ventilation openings in vertical exterior walls, and vents through roof shall not exceed 144 square inches each. Such vents shall be covered with non-combustible corrosion resistant mesh with openings not to exceed IA inch. Attic ventilation openings shall not be located in soffits, eave overhangs, between rafters at eaves, or in other overhang areas. Attic ventilation shall be accomplished using eyebrow type vents on the roof surface of any side of the building except those facing the Open Space or Undeveloped Space. Under floor ventilation openings shall be located as close to grade as practical. Exception: Residential occupancies where 2 or more sides are facing Open Space or Undeveloped Space may have eyebrow vents on the protected side(s) of the structure provided that they are located a minimum of five (5) feet above the exterior wall line. Detached accessory Structures and Fences - Detached accessory structures located less than 50 feet from a building containing habitable space shall have exterior walls constructed with materials approved for one-hour fire resistive construction, heavy timber construction, or constructed with non-combustible materials on the exterior side. When the detached structure is located and constructed so that the structure or any portion thereof projects over a descending slope surface, the area below the structure shall have all under floor areas enclosed to within 6 inches of the ground with exterior walls. Fences constructed of combustible materials shall be separated from the perimeter of buildings containing habitable space by connecting to buildings with a Masonry Pilaster. See Figure 1. Modified Construction Requirements for Buildings/Lots Containing Fire Resistive Heritage Trees The following requirements shall be implemented in addition to the construction requirements set forth above when there is a Fire Resistive Heritage Tree within 100 feet of the exterior wall of a building or deck projection as measured from the drip line of the tree. 1. Exterior Walls Fire rated construction standards required for the exterior wall most exposed to wildfire risk shall be extended to the adjacent elevations of the structure. 2. Windows Install dual tempered glass windows in openings on the exterior wall most exposed to wildfire risk and adjacent elevations of the structure. 3. Construction of Structural Members Structural members used in the conslxuction of all under floor areas shall be protected to a minimum of one-hour rating. Under floor areas of structure and decks shall be enclosed to the ground with exterior walls rated as required in Item #1 Exterior Walls, above. 4. Automatic Fire Sprinklers Provide fire sprinkler flow detection monitoring through a Underwriters Laboratories Certificated central station company. WM~ 7 City of Dublin - Wildfire Management Plan Standards for Vegetation Establishment and Maintenance The City requires that all new development utilize the following standards for vegetation establishment and maintenance. VEGETATION GUIDELINES ON LOTS WITH 0 TO 30% SLOPE 0% to 10% Slope 3-feet from Structure- · Maintain an area of non-combustible material, flowers, plants, concrete, gravel or soil. 4-feet thru 14-feet from Structure- · Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees to 10 feet from grade or one third the total live crown height. 15-feet thru 30-feet from Structure- · Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees 6 to 10 feet from grade. WMP - 8 - City of Dublin - Wildfire Management Plan DO~NSLOPE UPSLOPE 11% to 20% Slope 3-feet from Structure- Maintain an area of non-cOmbustible material, flowers, plants, concrete, gravel or soil. 4-feet thru 19-feet from Structure- - Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees to 10 feet from grade or one third the total live crown height. 20-feet thru 44-feet from Structure- - Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees 6 to 10 feet from grade or one third the total live crown height. 45-feet thru 70-feet from the Structure- Thin trees to 10 feet between crowns. Prune limbs of all remaining trees 6 to 10 feet from grade or one third the total live crown height. City of Dublin - Wildfire Management Plan DOV~NSLOPE UPSLOPE 21% to 30% Slope 3-feet from Structure- Maintain an area of non-combustible material, flowers, plants, concrete, gravel, soil. 4-feet thru 24-feet from Structure- . Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees to 10 feet from grade or one third the total live crown height. 25-feet thru 55-feet from Structure- - Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees 6 to crown height. 10 feet from grade or one third the total live 55-feet thru 100-feet from the Structure- · Thin trees to 10 feet between crowns. · Prune limbs of all remaining trees 6 to 10 feet from grade or one third the total live crown height. 30% and greater shall be evaluated on a case by case basis. WMP - 10 - City of Dublin - Wildfire Management Plan Vegetation Maintenance The City requires that a maintenance program be established for the created fire buffer areas, which will maintain plant species according to approved specifications. Maintenance programs should prevent the introduction of unapproved species and plan for the removal of biomass, overgrowth and dead foliage. The maintenance program should also plan for the replacement of dead plants and plants which are beyond useful life. Irrigation Where required for establishment and or maintenance of plant species, irrigation systems shall be utilized and maintained. Open Space Access All open Space areas shall have two points of access suitable for wildland fire apparatus. Minimum unobstructed width shall be 20 feet. Gates, when used shall meet the key control requirements of the fire department. Establishment and Maintenance of Vegetation on Approved Lots Plant species as shown for the specific area on the Plant Species List may be established or maintained in that area. Lawns and native grasses may be utilized in all areas, except Area-A where native grass is prohibited, provided they are kept mowed to a maximum height of 4 inches. When native grasses are utilized, mowing will be limited to the months of May through November. Establishment and Maintenance of Fire Resistive Heritage Trees on Approved Lots When any of the Vegetation Standards call for pruning of limbs and trees that are identified as Fire Resistive Heritage Trees, the following standards may be implemented in place of required ground clearance. The property owner shall install and maintain an irrigated fuel break/greenbelt, outside the dripline of the Fire Resistive Heritage Trees. Size and compatibility of the greenbelt shall be determined following consultation with a Certified Arborist and review of the degree of slope surrounding the trees. The greenbelt vegetation shall be fire resistive and require little watering. All vegetation shall be maintained per the Wildfire Management Plan standards or Alameda County Fire Department Removal Standards (Exhibit A), except as modified for Fire Resistive Heritage Trees. 3. Ground under the Fire Resistive Heritage Trees shall be kept free of weeds and dead wood. Leaf litter shall be allowed to remain as mulch to protect the soil. WMP - 11 - City of Dublin - Wildfire Management Plan Limited pruning shall be completed to thin foliage, remove dead wood, raise the foliage one-foot above the ground and where appropriate, separate the crowns of the trees. Crown separation shall be based on the recommendation of the Project Arborist and the City's Arborist. Branches larger than one inch in diameter shall not be pruned unless agreed to by the project Arborist and the City's Arborist. 5. All other applicable standards shall continue to apply except as modified above. Establishment and Maintenance of Vegetation on Permanently Designated Open Space Where Fire Buffer Zones extend into designated Open Space the planting established in the Fire Buffer Zone will include only native grasses and native trees shown on the Plant Species List. Grasses in the Open Space Fire Buffer Zone shall be kept mowed to a height of 4 inches. When native grasses are utilized, mowing will be limited to the months of May through November. Where trees are established and/or maintained they shall be in accordance with the appropriate Area. In open space where other than native grasses and/or trees are used, planting areas shall be irrigated. Establishment and Maintenance of Vegetation on Undeveloped Land Where Fire Buffer Zones extend into designated Undeveloped Lands the planting established in the Fire Buffer Zone will include only native grasses and native trees shown on the Plant Species List. Grasses in the Undeveloped Land Fire Buffer Zone shall be kept mowed to a height of 4 inches. When native grasses are utilized, mowing will be limited to the months of May through November. Where trees are established and/or maintained they shall be in accordance with the appropriate Area. In Undeveloped Land where other than native grasses and/or trees are used, planting areas shall be irrigated. Discing Discing is not permitted in any fire Buffer Zone or Open Space for fire protection purposes. Trees Trees from the Plant Species List or trees of like characteristic may be used in any zone. WMP - 12 - City of Dublin - Wildfire Management Plan DETAIL -I ~'~-~ 1~~__/'2:" 5;PACE MINIMUM 4" EX"'rERI'~R VENEER 4-i~. RFRAR MINIMUM -=- BUILDING LINE PL, NN 6~-0' MINIMUM Di~TH OR RE]=E~ TO' PROJECT ,.~ClL5 SQUARE CONCRETE ELOCK PILAS'I'~ EX"TERI~R 'VENEER TO MATCH EX"'['E]~I~R FINISH (STIJO0~, BRIQ.~, STONE, ETC.~I '-.'.') 4"'x 2.4-"xl E~" ~ONCFETE GRADE BEAM 1. FIU. ALL CELLS ',AITH GROUT.  2. MORTAR SH,ALI_ BE '~ADE 'N', , ;~. CONCRETE COMPRESSIVE STRENGTH !__ Z4' DIA._I SHALL BE A MINIMUM OF .'.'.'.'.'.'.'.'.'.~500 ps'l, - -i '1-.REBAR SHALL BE ~:F.,ADE PROFILE 5. NC, SPEQ,AL INSPECTION. MASONI[Y pll, . lTIm AT J N f C .DING NOT TO SCALE L_ - 13- t- t~ 0 ~ 0 City of Dublin Plant Species and Area of Use Table This table outlines plant species appropriate for planting in conjuction with the "Standards for Vegetation Establishment and Maintenance Guildelines." species Name CharaCteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large Matter Moisture Content Sensitive Iow Content ~,REA A This area must contain non-combustible material. Irrigated flowers are the only suitable plant life. AREA B This area is suitable for all of the plant species shown for Area A above, and the following plant species. Aeonium arboreum - Atropurpureum Aeonium suc * * ~ ~ * · yes Aeoium undulatum Saucer Plant suc ~ . ~ w * · yes Agapanthus orientalis blue Lily of the Nile peren . . w ~ w · yes Agapanthus "Peter Pan" Dwarf Lily of the Nile peren ~ * ~ ~ ~ · yes Agave americana "Alba Picata"* Agave suc · · * * * ~ no Agave attenuata "Nova"* Blue Agave suc · · . . w ~ yes Aloe arborenscens Torch Aloe suc ~ . w w * * yes Aloe "Johnson's Hybrid" No Comon Name suc ~ w w * ~ · yes Aloe Nobilis Aloe suc * ~ * ~ * · yes Aloe Striata Coral Aloe suc . ~ w * * · yes Aloe vera Medicinal Aloe suc ~ * * * ~ · yes Aloe X spinosissima Spider Aloe suc . . . * * · yes Arbutus unedo Strawberry Tree tree · · * * * · no Arctotheca calendua Capeweed gr cvr . . . * · * no Almeria alliacea* Sea Pink gr cvr . * · * * · no Almeria maritma* Sea Pink gr cvr * * · * * · no City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Duchesnea indica Mock Strawberry grd cvr ~e ~ ~ ~e ~e · no Dymondia margaretae No Common Name grd cvr ~ w ~ ~ ~ · no Echeveria "Blue Wave" Echeveria suc ~ ~ ~e ~ ~e · no Echeveria "Pinkie" Echeveria suc ~ ~ ~e ~e ~ · no Echeveria "Topsy Turvy" Echeveria suc ~ ~e w ~ ~ · no Erigeron "Moerheimii"* Fleabane peren ok ok · ? · · no Eri~leron karvinskianus* Santa Barabara Daisy peren ok ok · ? · · no Fejoa sellowiana Pineapple Guava shrub · · ~ ~e · ~ no Festuca ruba creeping* Red Fescue grd cvr ~ ~ · ~e · · no Fragaria chileoensis* Wild Strawberry grd cvr ~ ~e ~ ~e w · no G~7~nia "Mitsuwa Orange" Orange Gazania grd cvr ~ ~ · ~ w · no G~7~nia "Mitsuwa Yellow" Yellow Gazania grd cvr ~e w · w ~e · no Hemerocallis (assorted) Day Lily peren ~ ~e ~ ~ ~ · no Hesperaloe parviflora Red Yucca suc ~e ~ ~ ~ ~ · ? Jasminum ligistifolium Shiny Leaf Jasmine vine ~e · · ~ ~e · no Juniperus conferta Shore Juniper shrub . . · . · oils no Kalanchoe pumila Kalanchoe suc ~ ~ ~ ~ ~ · ? Kniphofia uvaria Red Hot Poker peren ~ ~ ~ · ~e · no Lampranthus aurantiacus Bush Gold suc ~e ~ ~ ~ ~ · yes Lampranthus spectabilis rosea Trailing Ice Plant suc ~ ~ ~e ~e ~ · yes Macademea "Dr. Beaumont" Macademea tree · · w w ~ · yes City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick ' Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Malephora crocea Croceum Ice Plant suc , , , , , · yes Myoporum Parvifolium Prostrate Myoporum grd cvr , * · ~ * · yes Nerine masonorum Nerine bulb ~ ~ * * ~ · no Nerium oleander "Mrs. Roeding" Dwarf Pink Oleander shrub · · · ~ ~ · no Nerium oleander "Petite Salmon" Dwarf Salmon Oleander shrub o · · * * · no Pelargonium peltatum Ivy Geranium peren · ~ , , ~ · no Phormium tenax "Maori Maiden" New Zealand Flax peren · · · . · · no Phomium tenax "Maori Queen" New Zealand Flax peren · · · w · · no Phormium tenax "Maofi Sunset" New Zealand Flax peren · · · w · · no Pittosporum c. "Compacta" Dwarf Karo shrub o · w * * · no Pittosporum tobira "Wheeler's Dwarf" Mock Orange shrub , w , w , · no Punica Granatum "Nana"* Dwarf Pomegrante shrub · ~ · w · · no Quemus agrifolia* Coast Live Oak tree · , · w · · no Ribes viburnifolium* Evergreen Currant shrub · o , · * · no Scaevola "Mauve Clusters" Fan Flower grd cvr w w · w * · no Schinus molle California Pepper tree · · · ~ · · no Sedum acre Stonecrop suc , * * ~ ~ · yes Sedum album Stonecrop suc . . . . . · yes Sedum brevifolium Stonecrop suc . . . . . · yes Sedum confusum Stonecrop suc . * * * * · yes City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or 'or large) Matter Moisture Content Sensitive Iow) Content Sedum lineare Stonecrop suc . . . . . · yes Sedum rosea Rose Root suc * * * * * · yes Sedum rubrotinctum Stonecrop suc * * * * * · yes Sedum spathulifolium "Purpureum"* Stonecrop suc * * * * * · yes Senecio cinerea Dusty Miller peren * * · * · * no Senecia kleinia "Mandraliscae" No Common Name peren * * · * * · yes Thevetia peruviana nedifolia Yellow Oleander shrub · · · * * · no Trachelospermum jasminoides Star Jasmine vine · · * * * · no Tulbaghia violacea "Silver Lace" Society Garlic peren * * · · * · no Yucca Whipplei* Yucca peren * · · * * · no AREA C This area is suitable for all of the plant species shown for Areas A and B above, and the following plant species. Achillea millefolium "Cedse Queen"* Pink Yarrow peren . . · * * * no Achillea millefolium "Red Beauty"* Red Yarrow peren * * · * * * no Achillea millefolium white* White Yarrow peren * * · * * * no Achillea taygetea "Moonshine"* Yarrow peren , * · * * * no Achillea tomentosa* Wooly Yarrow peren * * · * * * no Ajuga reptans Carpet Bugle grd cvr , , · * * · no Arctostaphylos "Carmel Sur"* Manzanita shrub , , · · · * .no Arctostaphylos "Emerald Carpet'* Manzanita shrub * * · · · · no City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Arctostephylos "Woods Red"* Manzanita shrub ? ? * · * ? no Amtotheca calendula Cape Weed grd cvr ~ w ~ ~ , w yes Artemisia "Canyon Gray"* Silver Wormwood shrub · · · · · ~ no Artemisia Causcasica Caucasian Sagebrush grd cvr w ~e · · · ~ no Artemisia pycnocephala* No Common Name shrub ~e ~ · · · w yes Atriplex nuttalli cuneata* Saltbrush shrub ? ? · w w ~e yes Atriplex muttalli gardneri* Saltbrush shrub ? ? · ~ ~ ~ yes Atriplex semibaccata Australian Saltbrush shrub ~e ~ · ~ ~ ~e yes Centaurea gymnocarpa Dusty Miller peren ~e w · ~ · ~e no Centranthus ruber Red Valerian peren Centranthus ruber "Albus" White Valerian peren Cheiranthus Erysimum Cheiri Wallflower peren w w · ~ ~e · no Coreopsis Ianceolata "Sun Ray" Coreopsis peren w w · ~ w · no Diplacus Iongifolius* Monkey Flower peren · · · · · · no Diplacus puciceus* Red Monkey Flower peren · · · · · · no Elymus condensatus "Canyon Prince"* No Common Name grd cvr ~ ~e · · · · no Eriogonum cmcatum* Coastal Wild Gum peren ~ w · · · · no Eriogonum grandiflora rubesens* Island Buckwheat shrub w ~e · · · · no Eschscholzia californica* California Poppy peren ~ ~e ~ ~ ~e · no Galvesia speciosa* Island Bush Snapdragon shrub · · · ~e w · no Gaura lindheimerii* Gaura peren ~e · · ? ~e · no CitY of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Ganzania leucoleana hybrids Trailing Yellow Gazania peren . . . . . . no Gazania regens leucolaena Trailing Gazania peren . . . * * · no Geranium incanum Stork's Bill Geranium peren . * · · * · no Geranium sanguuineum Geranium peren . . * * * · no Helichrysum petiolatum "nana" Curry Plant annual . . · · · * yes Heuchera maxima* Coral Bells or Island Alum Root grd cvr . . * * · · no Iris "Pacific Coast Hybrids"* California Iris peren . . · * * · no Koeleria glauca* Blue Hair Grass peren . . . . . · no Lantana motevidensis Lantana grd cvr . . . · * · no Lavandula dentata French Lavender peren · · · · * * no Lanvandula stoechas Spanish Lavender peren · · · · * * no Limonium perezil Statice peren . . . . . . yes Linaria maroccana Toad-Flax annual * * · · * · no Myoporum parvifollium "Prostratum" No Common Name grd cvr * * * * * · no Oenothera berlandieri Mexican Evening Primrose peren * * · * * · no Osteospermum fruticosum ~,frioan Daisy grd cvr * * · * * · no Pelargonium peltatum Ivy Geranium peren * * * * * · yes Penstemon "Firebird"* Red Penstemon peren * * · * * · no Penstemon "Midnight"* Beard Tongue peren * * · * * · no Penstemon "Skyline"* Penstemon peren * * · * * · no City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Penstemon heterophyllus* Penstemon peren . . · ~ ~ · no Perovskia atriplicifolia Russian Sage peren · o · ° · w no Phyla nodiflora Lippia grd cvr ~ * · ~ ~ * no Rosmarinus.officinalis "Prostrata" Rosemary shrub ~ * · · · oils no Salvia "Allen Chickering"* Sage shrub ? ? ? · · * no Salvia aurea Sage peren · · w · · * no Salvia chamaedryoides Sage shrub . . · · · w no Salvia leucantha* Mexican Brush Sage shrub · · · · · * no Salvia leucopylla* Purple Sage shrub · · · · · * Salvia sonomensis "Dara's Choice"* Sage peren . . · · · * no Santolin Chamaecyparisssus Grey Lavender Cotton peren o . · · · * no Santolina virens Green Lavender Cotton peren · . . · · * no Senecia "Vira-Vira" Dusty Miller shrub · · · . ° * no Silene maritima No Common Name peren . . · * * * no Sisyrichium californicum* Yellow-Eyed Grass peren . . · . * · no Stachysbyzantina Lamb Ears peren * * · * * · no Thyme praecox articus Thyme peren * * · * * oils no Thyme pseudolanuginosus Thyme peren * * · * * oils no Trichostema lanatum* Woody Blue Curls shrub · · · * · oils no Vinca major Periwinkle 9rd cvr . . · . * · no Vinca minor Myrtle shrub · · * * * · no City of Dublin Plant SPecies and Area of Use Table Species Name Characteristics ~pecies - Latin Name Species - Common Name Form Little Form Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content ~,REA D This area is suitable for all of the plant species shown for Areas A, B, and C above and the following plant species. Alnus rhombifloira* Arctostaphylos "Dr. Hurd"* Arctostaph¥1os pajaroenses "Paradise"* Carpobrotus edulis Iceplant Cercocarpus betuloides* White Alder Manzanita Pajaro manzaita Sea Fig Mt. Mahogany tree shrub shrub suc ;hrub no no no no no Ceanothus "Anchor Bay"* Mountain Lilac shrub * * . * * · no Ceanothus "Frosty Blue "* Mountain Lilac shrub · ° · ? * · no Ceanthothus "Joyce Coulter"* Mountain Lilac · o · · * · no Mountain Lilac Mountain Lilac Ceanothus "Ray Hartman"* Ceanothus "Snow Flurry"* Ceanothus "Wheeler Canyon"* Ceanothus "Yankee Point"* Mountain Lilac Mountain Lilac shrub shrub shrub shrub shrub no no no no Ceanothus "Point Reyes"* Mountain Lilac ;hrub . . ° · * · no Ceanothus griseus horizontalis* Mountain Lilac ;hrub * * · · * · no Heteromeles arbutifolia* Toyon shrub · · * * * · no ~hrub shrub Prunuslyonil* Quercus agrifolia* Catalina Cherry Coffee Berry no no City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name Species - Common Name Form Little Form Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Rhamnus crocea* Redberry shrub o . . . . . no Romneya coulteri* Matilija Poppy peren · · . . . . no GRASSES J Bromus carinatus California brome grass . . . . . . no Calamagrosti foliosa Leafy reed grass Calamagrostis nutkaensis Sand reed grass Danthonia californica California oat grass grass * · · · * · no Deschampsia caespitosa holciformis no common name grass * · · · * · no Elymus californicus California bottlebrush grass Elynus glaucus Blue wildrye grass . o . ° . ° no Elymus triticoides Creeping wildrye grass . ° · · * · no Elymus virescens Coastal wildrye grass * ° . ° * · no Festuca californica California fescue grass . ° ° · * · no Fescue idahoensis 'Tomales Bay" Idaho fescue grass . . ° · * · no Festuca rubra Red fescue grass * · · · * * no Festuca rubra "Jana's Blue" Red rescue grass * · · * * · no Koeleria macrantha no common name grass . ° · * * · no Melica californica Western melic grass grass * · · · * · no Melica imperfecta Small flower melic grass grass * · · · * · no City of Dublin Plant Species and Area of Use Table Species Name Characteristics Species - Latin Name ISpecies. Common Name FormI LittleI Form [ Leaf (thick Little Dead High Mineral Freeze Volume (dense or or large) Matter Moisture Content Sensitive Iow) Content Stipa sps. INeedlegrass grass I * I * I ' I ' * · no TREES The following is a list of trees that have a combination of characteristics which make them less flammable and as such are permitted in Areas B, C and D. Species - Latin Name Species - Common Name Characteristics .cer (many)** Aesculus californica* Citrus (many) Cinnamomum camphora Fraxinus (deciduous) Liquidamber Persimmon Maple Buckeye Orange, lemon, lime Camphor Tree Ash Sweet Gum Persimmon Pistachia chinensis Pistachio Populus* Prunus (deciduous) Pyrus (deciduous) Robiniana ambigua** Salix (free form)** Sequoia sempervirens Poplar/Cottonwood Plums/Apples/Peaches Pears Locust Hybrids Willows (tree form) Coast Redwood ' Growth structure which naturally provides for adequate separation between the tree canopy and ground 'Citrus and Sequioa trees are exceptions). Leaf shape, and size which make it less likely to ignite. Generally leaves are big or thick. High moisture content of the foliage. Usually deciduous trees have a higher moisture content. * Little dead wood in the tree canopy. The listed trees generally do not hold onto or accumulate dead wood. Note: Other trees that have the same characterisics as the trees shown on this list may be utilized. Approval will be granted on a case by case basis. FINDINGS OF FACT AND NEED FOR CHANGES OR MODIFICATIONS TO THE STATE BUILDINGS STANDARDS CODE BECAUSE OF LOCAL CONDITIONS CHANGES OR MODIFICATIONS: Pursuant to Section 17958 of the State of California Health and Safety Code, the City Council of the City of Dublin, in its resolution amending the Wildfire Management Plan of 1996, changes or modifies certain provisions of the State Building Standards Code, as it pertains to the regulation of buildings used for human habitation. A copy of such text of changes or modifications is included in the City Council resolution attached as Attachment 2. FINDINGS: Pursuant to Sections 17958.5 and 17958.7(a) of the State of California Health and Safety Code, the City Council of the City of Dublin has. determined the attached changes or modifications are needed, and are reasonably necessary because of local climatic, geographic, and topographic conditions. A copy of the City Council resolution making such a determination is attached as Attachment 1. LOCAL CONDITIONS: Local conditions have an adverse effect on the prevention of (1) major fire loss, (2) the potential for life and property loss; making necessary changes or modifications in the Uniform Fire Code and the State Building Standards Code, in order to provide a reasonable degree of property security and fire and life safety in the City of Dublin. Within the areas of the City exist approximately 12.20 square miles of land, with a population of 32,500. Within this area of drastically varied terrain, are developed residential urban areas, which interface with sparsely populated rural areas and rolling hills. Because of the climatic conditions, which exist in the City, and the nature of the topography and geography of the City, these Findings of Fact listed below shall be submitted to the California Building Standards Commission. 1. CLIMATIC Ao Precipitation. Precipitation ranges from 8.6 to 21.2 inches per year, with an average of approximately 14.52 inches per year. Approximately 85% falls during the months November through April, and 15% from May through October. This area experienced a major drought and it is possible more droughts will occur in the future. Relative Humidity. Humidity generally ranges from 60% during the daytime, to 80% at night. It drops to 20% during the summer months and occasionally lower. ATTACHMENT3 Do Temperature. Temperatures have been recorded as high as 108 degrees f. During the summer months, the City can experience temperatures such as that for extended periods of time. Winds. The prevailing winds are from the Northwest; however, winds are experienced from virtually every direction at one time or another, Wind speed varies from a light breeze of 5 mph to 15 mph. In the summer months, the wind may gust from 7 mph to 30 mph. Additionally the, fog may reach the City, which will provide some cooling effect. Regardless of the cooling effect of the fog on the Westem side of the hills, the City is prone to periods of Westerly, Northwesterly winds, and "Fohen type" winds that have the same effect as the "Santa Ana" winds of the South state. Summary. These local climatic conditions affect the acceleration, intensity, and size of fires in the community. Times of little or no rainfall, low humidity, and high temperature create extremely hazardous conditions. The winds in this area can have a tremendous impact upon structure fires where buildings are built in close proximity to each other, and fires within the Wildland Urban Interface which can threaten the structures built in an around the brush and timber. Both of the above listed conditions are commonly found in the City. GEOGRAPHIC and TOPOGRAPHIC Geographic location, Topography. The City of Dublin is located on the eastern side of the foothills of the Oakland Range. The City is characterized by a flat plain at the intersection of Highways 580 and 680. To the east and west of this central area are hilly areas that become increasingly steeper. The flatter and more moderately sloping areas include existing or planned urban level development. Interface between open space wildland and urban development areas are common. Within the hill area are numerous homes and planned developments. With the steep valleys and winding roadways leading to these areas, fire spread and response time are impacted. Bo Roads and Streets. The number of vehicle miles driven in the City is steadily increasing and efforts in traffic and roadway improvements are being made in an attempt to ease the crush of commuters to and through the areas. The City' is intersected by Highways 580 and 680. There is also the Bay Area Rapid Transit District lines and passenger station. The impact of planned developments and traffic flow will continue to have an affect on the Fire Department and the delivery of fire and emergency services. Co Summary. The above local geographic and topographical conditions increase the magnitude, exposure, accessibility problems, and fire hazards presented to the fire departments serving the City. CONCLUSION: Local climatic, geographical, and topographical conditions impact fire prevention and suppression efforts; the frequency, spread, acceleration, and intensity of the fire involving buildings and wildland areas within the City of Dublin. While it is clearly understood that the adoption of these modifications to the Code may not prevent the incidents of fire, it is further noted that the implementation of these modifications may serve to reduce the severity and potential of life and property due to fire. The City of Dublin submits these Findings of Fact to supplement and further document the determination made by the City Council on March 5, 2002 through the attached resolution. This filing is made to the California Building Standards Commission pursuant to Section 17958.7(a) of the State of California Health and Safety Code. The required determination is marked on the attached City Council resolution. The related modifications are marked on Attachment 2 of the City Council resolution, and directly reference the residential/open space interface wildfire hazard identified in the determination. Respectfully Submitted, James R. Ferdinand, Assistant Chief/Fire Marshal Attachment: City Council Resolution No. Alameda County Fire Department Fire Prevention Bureau City of Dublin Division Removal Requirements Weeds, Rubbish, and Litter Abatement The following are the minimum requirements for removal of weeds, rubbish, and litter, Please read the entire list as more than one category may apply to your property. BUrning is not allowed, except in agricultural applications and then by permit onlY. RUBBISH, LITTER AND DEBRIS All Areas: Remove any rubbish, garbage, litter, junk, old building materials, or other items completely from the property and appropriately dispose of them. Maintained throughout the year. WEEDS AND OVERGROWN VEGETATION All Areas: Prune any overgrown plants, shrubs or trees; remove cuttings and dead tree limbs. Keep all trees, shrubs, and other vegetation, or portions thereof adjacent to any building or structure, free from dead limbs, branches, and other combustible materials. Maintain five feet (5') of vertical clearance between roof surface and portions of trees. Maintain roof of building or structure free of leaves, needles, twigs, or other combustible litter. Maintained throughout the year. Urban: Abate all exterior fire hazards; complete abatement 'may include a combination of discing, mowing, and spraying. Remove from the property all dead trees and maintain weeds and other vegetation at a height of no more than four inches (4"). Native shrubbery should be cleared to a distance of at least fifteen feet (15') from the structure. Maintain trees within one hundred feet (100') of any building, structure, or within ten feet (10') from any roadway, highway, street, alley, or driveway, so that no leafy foliage, twigs, or branches are within six feet (6') of the ground. The otherwise required six foot (6') foliage clearance may be modified for specific Fire Resistive Heritage Trees as defined and further provided for in the City of Dublin Wildfire Management Plan. Remove any portion'of a tree that extends within ten feet (10') of the outlet of a chimney or stovepipe. ATTACHMENT 4 Page 2. Removal Requirements - City of Dublin Rural: Parcels, one acre or less, shall require complete abatement of all exterior fire hazards. Parcels greater than one acre should provide a minimum twelve-foot (12') firebreak. Firebreaks are to follow as closely as practical, the property line, along one side of fence lines, ditches, and on top of ridges, or surrounding structures. Trees may be left within the firebreak and shall have low limbs trimmed up to a height of six feet (6'). All buildings and structures which are upon or adjoining hazardous fire areas, shall be maintained with an effective firebreak by removing and clearing away flammable vegetation and combustible growth from within thirty feet (30') of such buildings or structures. A firebreak of one hundred feet (100') may be required due to terrain, topography, or fuel. Where practical, provide twelve-foot (12') firebreaks from inside fence line along all public roadways. Combustible storage, such as usable lumber, cord fire wood, hay or straw, shall be neatly stacked an all combustible growth shall be removed from within fifteen feet (15') of the stored materials. Rural Residential: Remove from the property, within thirty feet (30') immediately surrounding structures, all dead trees, and maintain all weeds and other vegetation at a height of no more than four inches (4"). Native shrubbery should be cleared to a distance of at least fifteen feet (15') of structure. Remove any portion of a tree branch, which extends within ten feet (10') of the outlet of a chimney or stovepipe. Keep all trees, shrubs, and other vegetation adjacent to or overhanging any building or structure free of dead limbs, branches, or other combustible materials. Where practical, provide twelve-foot (12') firebreaks from inside fence line along all public roadways. Combustible storage, such as usable lumber, cord fire wood, hay or straw, shall be neatly stacked and all combustible growth shall be removed within fifteen feet (15') of stored material. No ~stack shall be located less than thirty feet (30') from a building or structure. Combustible trash, rubbish, or litter shall be removed from the property. If you have any questions, please contact the Alameda County Fire Department, Fire Prevention Bureau, City of Dublin Division, at 925-833-6606.