Laserfiche WebLink
i <br /> � C�rrent Conditions Summar�• <br /> � Lol 1 is mosll��bare soil (no ��cgctalion) and has historicall}� bccn used for storagc of sand. <br /> aggrcgalc. ,md crushcJ concrcic for Ihc adj.iccnl aggrcgalc mining opera�ions al thc Rinkcr <br /> KcJi-Mix planl. I hc majorily of thc silc slopcs lo thc north�ccst at a 2 perccnt gradc. Thc <br /> Isouthccisl porlion of Ihc sitc contains an cxisting gravcl road and adjacent hiehu all (an aggrcgatc <br /> mining icnn mc,ming a �ci�ical a nc,�r��cilical cxposcd soil face crcatcd by mining operations). <br /> � ��he high�eall slopcs lo���ard thc silc su a slupc of aboul 2 horizontal to 1 �•crtical. Thc graecl toad <br /> anJ liigh�will conlinuc off sitc lo Ihc soulh�rest. Scc I�igurc I. Gxisting Drainagc Map, in <br /> Appcndix A. <br /> + Slonmva�:r ninof'f Irom ahout 0.f, acres of high��all cmcrs thc silc as shcct flow. 'l�hc on-silc and <br /> ofl=si!c �mnff drains through Ihc silc as shcct Ilo�� and cm��, ;m cxisling stonn drainagc systcm <br /> 1 in Shuksan 1V';iy. 'I'hc stonn drnin systcm cccntuaily disch:u�gcs to an cxisting dctcntion pond at <br /> Ihc cnrncr uf Shuksan \Y,i��vid I lardcs�,n R�,ad. 'I'hc silc is u�ihu�arv lo �icnil Rinc ('rcck. Scc <br /> I i�urc =. Pm�iusrd 1)rainacc It:isin �\1a��. in :\�ipcndix A fix hasin bnundarics. <br /> � <br /> i'roposcd Storm Draina�c Impr���cments Stmimar�� <br /> + <br /> Slonm�atcr fiir lhc silc �vill bc cullccicd in a com�cntion;�l pipc syslcm. com c�cd tu .i dcicnti�,n <br /> � pond. discharecd at a mctcmJ ratc lo a ��atcr yuality trcatmcnt systcm. and thcn dischargcd to an <br /> cxist nL.,�omi dr;iina�c systcm in tihuks;m \1';ry. 011=sitc runoff��•ill bc collccicd ;uid comct�cd <br /> scp:u:rtcl��:uouncl ihc silc and �lisch;uecd in �hr c�isiin� sturm �lr;iin s�stcm nolcJ ahn�c. ��if'ioul <br /> IJcicnlion or��.itrr yualily trcatn�cni. <br /> I�hc :tnrm�catcr dctcntion ponJ is b.0 fcct dcri� W.�J frc; of licc slurasc and I li�ot of liccboar.l). <br /> � with ccttir�l sidcs supporlcJ h��:i rcwini�ip �c.ill nnJ 0.6 (cct ofJr�J storagc for storagc of sctUcd <br /> soil � ,ulicics. \V:dcr yualily irc�iuncnl is ��rocidcJ by a propriclary cartriJgc mcdia fillcr syslcm <br /> (Stur nFiltrr`) ��ith ;m inlc�ral liigh Ilu�c b���ass scs�cm. Prc-Irralmcm is procidcd b� a <br /> ��r�q�i icLir}°sl�mi�r mnnholc l�lurni�cpi„i � 1. <br /> � � � <br /> Dcsi},n Crifcria <br /> • ('it��o�l'��crct� ((.'OI[L .S���nni�nrrr .lLnr��,trnrrnr .11rim�r�1 <br /> • (�itl'ull'ccrr111('OI�I. /��'�it��� �irid ( ',accr,i�rri��n .l't�m,f�irrls,nnl,1)�rri/innrunslirr <br /> l)i'r�°lupin��ru <br /> Stornmalcr ('oncc�,incc ti�tilcm: <br /> ('�nic�•,�thc �,c,ik _'�-ccnr <lorm r�rnt. <br /> � � <br /> Panattoni Devclopmenl LLC Buildings C and D Septem6er 72,1007 <br /> Hydraulics Report •2• ; , , � . � <br />