9930 EVERGREEN WAY BASE FILE 2018-01-01 MF Import

II �: Y.t�.IN�IU :'M '• � 7T The subject property is located on the intersection of Evergreen Way (U.S. 99) and 100th Street S.W. (AiT.-port Way). There presently aze m structures on the site. The site is c�rently cwered with scrub tsees az�d brush, There are m �'gr.'eai tz�ees an the site. ENVIROfII`�VTAI. II�ACfS il) EARTH: Approximately 9ff/o of the site wi.11 be aleared and graded to accartmdate roa�s, parking lots, utilities and building, Other than ordinary c],earing an� �.ad- ing, no drastic ct�ange in topography or groimd s�face relief feattu�es is anti.cipated. No imique feat�es were discovered within the site. Stoxm i,eter erosi.on will i:n- crease, but will be mitigated by installation of te�orary and pern�anent siltation facilities per the City's requiremnts. (2) AIR: Additional car trips p�s day will be gaierated by thi.s development and will contri te to CO3 N0, and Spq anissi.ons frnmd in the �bient air. Office heating and cooling wi.11 be electric. T�porary deterioration wi11 occ� d�ing constructian. Diu'ing Constrvction, objectionable odors may be encotmtered with asphalt paving and/ or roof sisfacing, but will be limited to weekdays and d�ing �y��e. �3) WAT�R: ImPervious s�sfaces created (drive�,ays, parlcing 1ots, roofs, etc.) �aill c�ri rease s�sface nmoff quantities and rates on approximately 9�/, o£ the site. The increased nawff quantities and rates will con�ibute unre �ster to the drainage �5� � th�-5 arpa• Suspended soils and hydro-carbons may pote�etially cont�ninate nunff vaters. Storm �,ater drainage wi.11 be designed and cons�vcted in accordance with the City's requir�ents. Su£ficient polluti.on control faulities will be ccn- structed to screen contaminants entering ttie existing drainage syst�. Groimdwaters, infiltration rates and aquifer recharge wi11 be decrezsed. Piitigating measures will include siltation and oil restriction controls on all storm draina, g�e �1 be confined to sanita�.y sewers. i4) FLDRA: Approximately 90'/e of the @cisting trees will be cle�ed�in the azeas �e roads, utilities, parking lots and building constructi.on �e located. Ap- proxi�ately 90'/, of the imderbrush of the entire site wi11 be raioved, p, fe�a existing trees (mainly conifers) in conjimction with new planting materials orill be t+vrked into a landscape plan for constructi.on of roads, parking lots and h��;l�s, i6) P70ISE: Noise associated with constsuction wi.].1 be hi�h during the daylight ho�s ar a t 4 months. Noise w-ill be gaierated due to �i�ily ��S ��fic; t�owever, mi.se levels generated fran the proposal shoul.d be lower than c�ux�ently �isting in the area. 7) LI(�iT & QARE: Parking lot lightix�� headl�ght glae, and p,low izam interi.or tu� wl re t fmm this develognmt. 8) I�E1ND USE: At presait, ttie land is imdeveloped and iminhabited. The proposed use s in cou�liance with existing zone classifi.cation. �9) NATURAL RFSOURCES: Pazki� lot and driyec.ay impro�� affice building construcTwn vnt T1T-increase use of materials azxl e��ergy of the pu,�,et Sotmd Area. Such consisnption wi11 occ� regardless of the site chosen. �10) RISK OF UPSET; pnly Limited to potential accidents associated with constxuctivn sctivities.