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interface zones." According to the §uidelJnes, <br />the:;e are area5 that will.typically include <br />,Jeveb]pment sites adjoinin§ steep sloges, <br />ope~} .~rassJands and b~sh lands, NoodJand <br />and riparian zones, or major d~aina~e swains. <br />in sHch ,~reas, existing ve3etation ma~ cause <br />stmcture~ to be exposed to rapid~ spreadin~ <br />fire rh,~[ is difficuit for the Hayward fire <br />department to control. <br /> Ha'~ard's ~uidelines differ accordin$ <br />~[rurture ,:ore,pries. Cate3oW I structures are <br />those ~.ocated on sites where "maximum buiR- <br />in fire protection measures are necessa~ due <br />to nearby steep stopes or wildland fuel [oad- <br />in~j." These structures are to exceed minimum <br />Stat~~ pt California Fife Safe Guide ines. <br />Cate:4o~ H ~tmctures are th~se ~ocated in the <br />balance of the WUI. These mee( minimum <br />Califlmfi,~ ~uidelines. Hayward's fire aepar~- <br />ment designates which sites or ~ots must <br />Lnmpl,/with either ~et of standards, fl some <br />cas~, dm~e~opers ma~ be required ~o 8blain, <br />a[ their mmense, a qualified WUI fire manage- <br />ment omsuitant to assist in this desi~natien. <br /> The ~juidelines address bo(h construc- <br />tion standards and fuel ma[~a~emenL <br />Guildin$ ,.onstructiofl standards, listed below, <br />can ~;e applied either t~ Cate~o~ I er II struc- <br /> <br />t. En,:lm,~ ail roof e~ves [I). <br /> <br />~. Pray!de double-paned windows for exterior <br /> wMdow (I). <br /> <br />~. 5pecil"./a one-hour fire-resistive rating or <br /> ~reater for exterior bui[din~ matedal 0). <br /> <br />4. Within ~o feet of a structure, construct <br /> fence~; with an ~pen wire mesh or noncom- <br /> busdl](e ma(eda[ to preven[ fire from <br /> spreadM~ (o [he strut[ute <br /> <br />~. Design roofs that compl~ with a "Class A" <br /> mmcumbustible roof [atin~ as outlined <br /> [California} State ~uildin~ Code Section <br /> ~2o2. ~99~ edition (~o not use wood shake <br /> or trea~ed wood shake roofs) (I E II). <br /> <br />h. Provide metal enclosures with one-quaKer <br /> tach metal mesh screens on all attic vents <br /> (~de -/ents) and basemen[ vents (I <br /> <br />/. l)fovide ,;park arrestors with one-quaRef inch <br /> mesh screens on all chimneys, (I & II), <br /> <br /> i'i~: go[delines call for the establishment <br />O~ ri ~ ~[ management program and recom- <br />mend ~haL if feasible, the program be imple- <br />me[Ired !)v 3 i~omeowners association <br />dm)m;r~ ;:ovenants and restrictions appii[able <br /> <br /> Codes affecting' development in' the WUI may propose the planting of fire~resistive yeg~tation.... <br /> which burns at a relatively Iow'intensity-and has slow rates oftspi'ead with sho~ fta~ne~{i~n~hsl'~' <br /> CharacteristiCs of such vegetation include:..~ ~". :..-...-.:-:_-:..'-.. ¥ <br /> , Gro~h.w th i~ e omo accumulation o~dead:ve~e~at[o~,eithe~'on th~groun'd~:s[~n~fh'~::-~- <br /> ' upright: ' .' '"' .' ..-'~.:-..~.' '~-.: _- c:'. ~-:--.{'-~ '~.~.:.:~:.:::~.~::~.:~: ./';.?~ "~ <br />I Nonresinous plants, 'such as wi[[o~,. ~o~l~r~. o~ tuliP [ree~?'::...=-~ '~'j-~'L'.: >':'-';"?::~:/:~ :~ <br />' I Low Volume of tot~J've~etation,, sUch~a~ ~ ~rass are~as'~omp~r~d;~o:~: <br /> <br /> Plants that contain-a Iarge ~mount o~ water ~ cpm <br />  Drought-tolerant plants--deeply rooted plants With.~[~'E,~ he~'ie~s~-~-"~ <br /> Stands of plants wRhout ladder ~el~--fine; 'smaEb:ran'che~.-a~:li~'~ <br /> - and the canopy oFoveKoppin[ shrubs:~nd ~ee~.-:. <br /> i Plants requiring ~i~le maintenance "¥: C.-~.~ ~.,~_t: -_ ~.??.~ ~.~...:.~:"~/~[~:~.:~;~.~ :~'~;~::.~ -~:~?~. <br /> a Plants with woody-~ems and branches.that ~eqoire p~olong~d heatin~ to <br /> -. · <br /> <br />to the development, not individual home- <br />owners. The program is to consist of: <br /> <br />t. Homeowner education. This includes <br /> preparation of a pamphlet on fire safety, <br /> the fire cycle, and the ecolo§ical factors <br /> related to fire. <br /> <br />~. A shaded fuel break. This interrupts the fire <br /> ladder or the transfer of fire from the ~round <br /> (via shrubs and ground covers) to tree <br /> canopies. In such an area, brush and selected <br /> understory are removed from the'ground, and <br /> [ower limbs of trees are pruned back. <br /> <br />~. "Mosaic islands" of brush and shrubs. In <br /> such areas, stands are selectively thinned-- <br /> from 6o to 7o percent removed--to reduce <br /> fuet loading and break up the continuity of <br /> the fuel bed. <br /> <br />4. Fire-res[stent plants for domestic and <br /> replacement planting. The guidelines recom- <br /> mend a series of species. <br /> <br />5. Establishment of fuel management zones. <br /> The guidelines propose four levels of zones <br /> to limit the exposure of a structure to radi-. <br /> ant heat-and debris from an advancing fire. <br /> <br />ZONING PRACTICE 3.05 <br /> <br /> <br />