chy—lonms il ioiodlied rn ar 57 ein ( irieliesl deep and rolled down, However, il isexperis and doesni always woik Ceineni arid (amping plus sprinkling flush! oe prdtmble, ur a oiluininous spray an be rolled rn nlier ulling ln rluy soils, sali or sodium moonareean nayernesaine cllcd EXPLOSIVES m sorneiiiries used (a eorripaei iris jxdci oi lull danis, arid eunsisls ol lhmwlng in a 3x; slieli charge oldyruniiie. This works well al nines, bnl u dingemi il you own a ielrreuer, or ii liie doiri wall is poorly eoinpaeled ioslarl wim, CLAY is expansivc il ii los lo be med in, our ii is oleen used [0 seal dams near n elsy poekei Tlie elav is spiead and rolled 2340 (m 9-12 ineliesl lhick over suspeel arnus IMPERMEABLE MEMBRANES ean oe ol welded plaene, neoprene, or even poured eonereie lrnpenne alale membranes are loo expensive In use on any nul Crlllcal dorris, wnieli inay niean a guaranieed warer supply to: house 0! louder. in very porous aieas. Usmg membranes enables banks [0 be sleeper no any orlier eorilieonipaenori or gley sysieni, so run more wnier ean be lined inlo sinaller spare. li is nol ‘oioloeical-‘ unless a sand oi lopsoil lloor is also added over me sealing layer, when lisn or planls ran on odded. Eanh slorape is now llie elyeapesl, easresi, and niosr locally sell-reliani nieinod ol waler eonseryalion Unless balk eilies and larnis use such ineiliods. elean wit" will deservedlv oeeonie known as me world‘s raresi iriineral, lllrhealm will lae peipeluaied, and droughts and lloods allke lseeorne roininonplaee None ol lliese are neeessary, Cans vary preailv, as a mush guilds, waier sloied in soil and nurnus rne elieapesl and ol giearesl yolunie, surlaee dams nu! eliespesl, nnd runks denr, bu| srill niueli less expensxvr llisn piped wnier [mm rnains supply l ean only urge all people ol guodwlll lo prornore, iund, and mves‘igMe waler and waier smrage, warer energy and waler elea ess. as me elilorinaied, nielallie, asbesloslilrred, porsonous waier ol mndun eenrralised svsreins is prudneing sueli epideniie disease an riess n. eaneer, bone marrow (adore, and gasiioinresiinal disorder [I n 22,500 l mnk rosrs 2n uriirs ol inoney, llie same uniis in a sensible ealli sloraee peys lor 2500,00 l, or spool m0 nines as inuen warer, Up Io moon—2,500,000 l links Eel eneaper, as less eoriereie is used lor niore waier Thai is, a \axge hank is ieladvely cheaper ilian a small lank Abnvc 2mm l, sueli mnlré are usually poured on sile, oelow iliis, iliey ore earled lioin a eeniral minuliduring sire Dams, in eonlrasl, begin lo eosl rnoie as in. lieigyil oi llie wnll rises Abom .1 rn (in feel) ol relainine wnll is in. liiriii oi eneap dams Above ilus, eosrs rise iapidly as greaier skills, inoie expensive and inassiye norenals, inore eornplex eorilrols ol levels, and niueli gnaltr enyiioni-nenlal rlsks rukeineir loll As nored, elieap waler in dains depends on llie enoree ol sile, so chm very low dsnu or. welleeleered sues impound zo-lw nines inoie waier lhan llie some enirri used on sleeper sires, wneie every unii ol eanli rnoved eounls u uml ol waler However, eyen earili ranks enavalzd oelow grade are a| Dnhlevmh M pdee of eoneiere ranks above yidt wnere aie links, inodesl danis. and mive dnnis applapni‘ne7 Tanks are dppropriole on isolaied dwellings, in llallonds, arid everywhm in cross and urbanised areas Dims of lroin 22,500 ro l 5 M) are per: ouill on any good sire in eounlry ond parkland aieas Massive dams are appmpriale liaidly anywhm our lhe llne roskeoerrned or elneialed uplands ol solid and loiesred hllls, sumeei lo low eurlnoualre nsk and died only lor inodesl doineslie \nm dirry iridusuiall power generanon TANKS Culmnl arid liisiorieal pmzdzm niay deierrnine liow earlli is moved and used, or even it ii an be iii/owed or all. Thus, an Australian aeeuslonied lo a greai vai-iery ol surlaee slorsee, in aslounded lliul iliere .re no scnzmilc or CDSTS FDR DAMS AND YAMKS Sienna MB rod mu m nines lie oosi M dams 1mm same :Mum ul will! sored: mn—sin rem-unis lor mm are anen o ’° EARTH DAMS ‘° TANI6 n * 4‘, . . ,s s rr s r , ,, , neunzm m” “*9" (“Mr”) ’— olrea fizz» Elude!) 3 165