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#-'_ ..11 B� S.•DO vL��TE\ �tiCE OF STOR�I DR� �GE F:�CII.ITIES <br />�i-i•,hout nroper maintenance oi stornw•ate; :acilities, sediment and other debris can quickly cloa :acilities, <br />makin� them useless. Rehaoilitation oi such facilities is di;;uu'.c znd exnensive. Po;luted water and sedimenu <br />renoved durine tne cleanin� ope; ation mus: be prooe-ly disoosed of. Stor�u�yter aearnent iacilities shall be <br />nair.tained ac:ordine to c,ite:ia or procedures presented in Section 3-1. <br />=..13 S�II' S:'0 PRI�.�,TE STREET �:?) P�\G LOT S��EEPLrG <br />Private s.;eevparkins lot sweepine shouid'oe im�lemented ior sices witn hign imoervious co�er and :o improve <br />:llil0ia C1t211iti' IiOID C:LISi1R� develoomem sites. Sweepins ;eie:s i0 i!]C :CiilO�'21 OI 2CCllIDUI2T�Q aUSt C1i.2Ild <br />debris :;on impervious suraces w•ith the use oi mechanical clezne:s. Sites which eshibit high ]ev:ls oi sedinent <br />on inoervious sur."aces should also implement z_g; essive sou; ce conaol nesures to prevent accunula�ion oi <br />;uch sediments. <br />�;hile �aditionzl s�eat!parkin_ lot sweepins has shoan limited e:;ectiveness at improving water ouzli�'the:e is <br />e��idence that it c2n be e:;ec:ive wnen becer equipment and ope,-ating procedures are used. Tne most e;:icient <br />rvpes o: sw:epers, such as re�enerative air cleaners or vacuum sweepers, should'oe used. <br />Vf�TFiODS TO VfAXIVIIZE SR'nEP11�G EFFICIE�iCY <br />l. bfultiple passes should be made. Gene:ally speaking, one oxss can ,-emove 50% o; a�'zilable solics, rNo <br />pzsses provide i:°�o remo�•al. <br />''. The ;reauency of sweepin� nri�•ate streets 2nd parkins ue2s w•ith hieh nollutant loadings shoulc be <br />increased, p2r.icularly in indus.:ial zreas. R eekt�� cleaning oi private streeu will.provide more re;�o�'2� <br />e,-�iciency; less irequent sweeoin_ w�ill acconolish liale. <br />_. Vzcuum or reeeae;ative air s�•eepe:s z: e the most ef;ective in renoving the small oz �icles mes. <br />zssociated wiLh poliutanu. <br />" Operators should be �ained to a.—,ain matiimen sweeper pe:iomance. 5weeper speed, brush adjusment <br />�. <br />znd rotation rate, sweepin� parem. maneu��e:ing around �a:ked venicles, in:erin storage and dupesa <br />m:chods all aiiect pollutant removal. <br />, ., <br />-.-_ � <br />