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KING COUN'1'Y,NASf 1ING7'ON, SURPACG\VA"I GR UESIGN i�fANU�V <br /> MAINTENANCE STANDARDS FOR <br /> PRIVATELY MAINTAINED DRAINAGE FACILITIES <br /> NO. 1 — Dls'17?N7'ION I'ONDS <br /> �lainlennnce Ucfecl CunJii(ons��'hen i\I:�inlmmnce is Needed Idrsulls F.cprUed�Vhen <br /> Compnncnl �\Inin�cnuncc is Pcrfurmcd <br /> (icnrr:il 'fr:i.h,l Dcbris :�ny ir.ish anJ dc6ris�rhich cxnYd I cubic kx�t 'fr.ish and Jcbris cicarcJ Gum silc. <br /> per I,O110 squarc fcct Qhis is about equ:J�o�hc <br /> ;unoum of uash it would inkc�o fill up unc <br /> .a:mJard sizc ullicc gnrbagc can). In gcncial. <br /> �h�Tc shnulJ bc no��isu;d cviJcncc of Jwnping. <br /> Pui.oi�uus Vreciaiiun .\ny puisunous or nuisnncc�rgclalion�chich No Jang�Y of poisonuus ccgciaiiun <br /> m;iy cons�itwc n hvard lo Counly persunncl nr �chcre Connty per.onncl or thc <br /> ihc public. public mighl nonnallp bc. <br /> (Coordination wilh Sr,iltic�Kinc <br /> Cuunty I Icalth DcpartmcnQ . <br /> Pollutiun Oil.Rasuline,ur oihrr coniaminains of one No cunlainin;mts presem u�h�v <br /> g:dlon or more ur;my amumn liiw�d thni coulJ: �han�surf.icc fihn.(CuorJin:�tiun <br /> I)causc damagc io plant,anim;�l.or tn:irinc e�iih Scattic'King Comily I lcohh <br /> lilc:2)cuns�iwtc n lirc hazarJ:or 3)hc Ilushcd DcpaNmcnl) <br /> du��nstream during min s�omu. <br /> Umm�u�cJ Gr:os� If facili�y is Iuc;ncJ in prira�c residcnlial arcn. \Vhen mo�cing is n�rJcd. <br /> � GrnunJ('��crr muw�ing i,nccJcJ�chcn gra.s cxarJs I S gr.isJgrounJ c���cr shuulJ bc <br /> indics in heigh�. In uther�rcas.�he generul mo�ced to 2 inches in heigh�. <br /> policy is io mskc thc pond sitc match;�djacc:�t Alo���ing o(,cicctcd highcr uxc <br /> �fO0I1lI lUlYf:IpII�l'R8111,l1 IOilb'�11IILTC IS f10 arcas nd�cr ih;m�hc cntire slupc <br /> intcrlircncc wllh Ihc(unctiun of Ihc(acility. may bc acccptablc for somc <br /> S1�UJI IOI1S. <br /> Rudcni I luln Any ceidcucc u(roJcn�hol�.a if facility ir RuJcnu dcsvuycd�mJ Jmn ur <br /> acting as n Jam ur bcmi,or nny c��iJencc u( bcrm rcpaind. (CourJina�inn�cnh <br /> �"�<<�������b a���,���i�a:���,.��i,��,��•��r�a�m Scaulc'King Couniy Ilc:�hh <br /> h„Ics. Dcpamncm) <br /> hi.cch N'hcn ins�r�s such ns wasps and homc�s Inscets J�s�ruycd or mnnccJ 1}um <br /> imcrfcrc�ciih mairicnnncc actieili�s. si�c. <br /> 'frcc Gro�ah Trcc gro�cth Jocs nol:�Ilmr mainlcnancc occcss "frccs du no�hind�T mnimcnancc <br /> or in��Tf�vcs�ciih maintcnancc actirity (i.c. actici�ics. $cl�Y�i��cly cuhic;uc <br /> slnpe mowing,sil�remo�•al,vacioring,or Irees such as alJen for firetcouJ. <br /> nryipm�hn mo��cmcnts). If tr�rs am nut <br /> intcr(cring a•ith occ�ss,Ica��c tr�Ys alonc. <br /> tiiJc Slupcs nl PonJ I�iusiun l:roJcJ Jemagc uccr 2 inchcs dccp�chcrc cau.c tilope:shoulJ bc smbilircd bc <br /> ol Jamag� �s slill presrnl or u�hcrc thcrc i, using appropriaic crociun cnntrol <br /> pmcmial li�r continucJ�rusiun. mcasurc(s):eg.,rock <br /> reinforccmcnt,plaming of�ras., <br /> cump:�ctinn. <br /> titur:igr Arca Scdimcn� Accumul.ni�l scJimcnl Ihai rxatids 10°0 otlhc ScJimcn�cicancJ oul tu JcsigncJ <br /> dc.igncJ punJ Jcp�h. punJ sha�x and dcp�h:pond <br /> ns�tiylcJ if ncc�ssarv tu conlrol <br /> / crosion. <br /> t / �Ifnicr��cncc Kuck �tisaing Only onc laqcr uf rocA csisls abo��c nalicc wil Rcpl;icr«�ck.lo J�sign s�anJarJs. / l�" <br /> U�rrllm��.ipillu;iy in;vcoficcsyuarcfce�nrlargcr.urany ` v ^ <br /> � �"1 <br /> :\P.I G4 <br />