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n�rr�c,��rion rnc�r sHeer <br /> � Location N�etlanO Impacf d Mitigatlon Sites(same) � <br /> Site Names lnc Boe�ng Company(Boeing)propenies south ol Scaway Boulevard <br /> ClrylCounry Evere;tlSnonomish <br /> Senion,Township,Rangc Seawn 3,Townsh�p 28N,Ranqe+E <br /> Latitude,Longitude(GIS vcrified) 4i°56'15'N. 122°16�Yt'W <br /> WatcrsAed Snonomish <br /> WRIA 7 <br /> Consvuqion schedule(tlevetoDment sito and compensation site�s�l: Summer 7012 <br /> Summery of p�o�ect,including proposed type and location ol worM,discussion ol avoidance and minimization measures,goals and <br /> objeclives,wetland lunetions,Impacted and miUgated(note assessment method used�,and the penerai design concept(include <br /> where it has been done belorc). <br /> , Boeing unacr an Agrcetl Order wnh�ne Lvasn�rGton State Deoartment o1 Ecoiogy(Ewlopyl. �,s responsb!e ior the Ucanup ol a tr.cn!oroefnene <br /> (TCE)Dlume c�tendmg nortn ol Ihe srortnHater dete-.uon ponds along PouOer M11dl Gulch�n��e ury o'E�eren(Cny1 Was�mamn The Olume <br /> c�tcr.as onlo D�rtel5 1B0�0J00700500 ana 28041000100200.IOGited south of Seaway Uoulerard anC noM of Ihc Bo�ing L�ercri p�art The <br /> nvo parceis are owneA Cy Boemg and conta.� Wetland A and Powde� bfi��l CreeM AS Oie first phase ol an mtenm 3cUon IIA�. Bceing is <br /> proDosing lo insta'�I a remedial system Io eetrec� and ireat conlaminateC groundwater Iro�n I�e p'�ne beneath Inese two 0�«�s l�e <br /> ob,eclnes of Phase 1 include 1) [sabhs�i hydraullc containmem and O�eve^d furt�er m�g�atron. to Ihr, manmum eTte�t praqiW'�le. ol <br /> chlormatM solvenico�tam;nated grounCwater Ceyo�� Seaway BoulevarE an0 oM Bceing property. aia 2) Reduce. to the maR�mum e+iCnt <br /> � piactiu3�le.m�grahon ol chbrinaleA solrenbcontam�nalea grounAwalei lo Ue sudace w.ate�s ol PowAei`.UII Creek.soulh ol Seaway Uo�'evard <br /> I� TOe Pnase t ia cons�sts ol a grountlw�aie�eatranion an0 treatment IGET 1 sys�em Nae w,il esaDl�sh��wre tones lor hY�rauLc cAnVol The <br /> GET system w,ll inG�Ce tnree gmunRaatet e.iractm� v.ells.a gmundwaler Irealmerl system consrsb�g ol an au smpper contained�•d�in a <br /> treatment syslem �mlaing, an e'+gineereA ou;fall lor eiscnarge of Ircatca grou^.dwaler to Ine City samt.lry sewer syslem. ana gySOGaled <br /> ple:ometers and momionng welis w moeAor grounEwate�hydrology and cuahry Impacfs ta rnuw�areas�a�e becn avoiGcO and mm�mired lo <br /> ihe e.tent praci�rzl (rcler to SecUon 5 of t�e reportl UravadaGie impar.l lo weitand is i.m ted w temporory impacLs(�e. Ueanng)assoaatM <br /> wdh mslallation ol 0�exome;ers The mitgalion plan Icr unavo�CaDle impa[IS t0�s sl5 of iestorabon o��5'etld�C A <br /> WeUandlWaterway Impan <br /> i � Waler Hydrologic Habltat IsnOscapc <br /> � Name �mpacts(fl � Type Rnting Ouality Score Score pqsltion HGM Class <br /> Score <br /> Wetland� 7BSB' iemporary III ta J 15 \alleybotlom Slope <br /> Wetland fmpacls and Mitigatlon <br /> Wclland Type(Gownrdin, <br /> classifiwtion) Arealmpacted Resloration�atea) <br /> Valuslnneloreslea 705R' 7fi5tl'olonSileresloration <br /> DescriDe other impacts andlor other mitigation activities. <br /> lemporary�mD�ctS Ia Cullers ol SVeiland A and Powder A1ill CreeA will OCcur aSSoaateC v.alh mstall:i�ion 01 D�elomeler5 dnG a segmenf ol Ou• <br /> treateA grounOwaler A�schargr,line ihe mdigation plan mcludes�estoration ol 5.�70 h'temporanly CislwDed Aunng tonstruaion <br /> In order lo assess Ihc potcmial impact to Ihe slayc aod Ilow ol wrlau�waler in Powar.r 6611 C!eeA �i�sed by groundwa�cr e�Vacbon,kioi•nq <br /> wJl pedorm basclmc and posl-syslem operauon moreionng ollloMs and wale�levcls m Powdr.r ldill Cree1 Ii changes m the stage or Oow ol n�,� <br /> [reck artt ODScrvN Iha�arC al�nbN,blc Io grouna+:lei eaVaction.Ihiti inlortneUon n�ll be iepohed�o a^A uscd by Ihe Was��ngion Ucpanm��•n <br /> ol Rsh and WJGIAe (WDFIA') �o dCle�mmC wheU+e� Inc IuncUon and value ol Ihc crcek Aave tMen advcrsely ImpacteA, and by Pce�.ny .u�a <br /> Emloqy(in cooperaUon wllh W Df W�10 dcicrtnme how to apprupnately nnbgalc lo�these im{W tls whJe sell mceting Ine ohjcarves ol lhe In <br /> Doxribe I�e buffers Eefng proviAed for the mrtigolion site,including minimum anC ma�imum wiEth,total buHer area,antl descriD��on <br /> ol surrounding land uses. <br /> Temporary bu��Cr impa�Ys wrl o[Cu�,howcvCi,no loss ol funrhon ur are�w91�es�ni fmrn prp�icl acinihes Lantl use m Ilic surtoundiny slutly <br /> Jica CAnsi,ls pnmanly of Io�uSied aieas d�d slCep sloDes <br /> Describe 1he water regime at Ihe mitipation sile�s�,including source of wamr,eapected water depth,a+erape outflow(winler,spring, <br /> summcr�,and owncrship ol weMr rights. <br /> Wecand mit:gauon cons�st,ol resto�at�on ol dantings Ihal are clearea eunng conslrucUon anrvnies Nomanl0ulauon ol wellana hyArology is <br /> proOoseA as D���I i�e reslowLon plan <br /> Provide a list ol peAormanw standards a�d t�e estimated time to reach each. <br /> Weilantl m�UgaLon consists ol resloration of pian�ngs Ihal are Geared Ounng conslruction aclivmes. No mampulalion ol wellana hydrology is J <br /> proposed as pan ol tne miDgaLon plan Based on site con4�6ons and minimal mo0ifia�4on lo eKisunq sne condilions,high success ol mih9abon � <br /> plantings is anliopate� ihe lantlswpe wnUacror wd��prm�de a 7_yeai warrnnly br m�t�ga0on planhngs —_ _ _, <br /> ):in: ��.5:"�;cP:nfl-�p��e:s�eH:�,.yea.ar'P�ni1�hN..•� I.rerJ,.�.r.au 'IR:t tic'S«x.arr.�He�.. �F4DhU�1550Lh1E5 <br /> Iil <br />