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1 <br /> , —_ _ _ _ Sformwafer Pollution Prevention Plan <br /> , 2.0 Site Description <br /> ' llie Proposed sitc is locatcd in Souili���cst Lvcrett along Seaw�ay Blvd. norih of Paine Picld. A <br /> site ��icinity map is located in Appendis A. The siie an undevclopcd 6.22 acrc parccl. 7lic <br /> ' Lastcm topography oCthc site is steep-slopcd do�tirohill fram the ca�st to the R�cst (-40% slopes). <br /> 'il�c dcvclopment area of thc site is located on the ���estern sidc of the parccl :uid gcntly slopes to <br /> the �vest as��'cIL Soil co:cr of the site is a sandy soil and is a very well draincd site. <br /> ' Runoff from U�e silc drains to the West. Thc dilch on thc Soulh sidc oCthe property convcys <br /> runoff to a constructcd ��edand. This �+�ctland collccts somc �aatcr from Po���dcr Mill �ulch and <br /> ' somc from thc proposed sitc a�id ditch. 7he �aatcr ilicn re-enters Po�vdcr Mill Gulch. Powder <br /> \lill Gulch is not listcd as a polluted water undcr the State's Clcan \'l'atcr Act Scction 303(d). <br /> t �Iliere are no critical areas specifically on the site,ho�+�c��er due to the steep slopes on the 13asiern <br /> half of die sitc, NGI'A has bcen created in this area. 'llie consiructed ���etland licsjust �ccst of <br /> thc site, ;�id Pmvder Vlill Gulch liesjust ��cst of the �cetland. <br /> , <br /> � 2.2 Proposcd Construction Activities <br /> l�he propasrd dc��elopment includes the consUvction of a cnmmcrcial building thal will be used <br /> ' rrimarily as a facilit}� housing a welding business. 'fhc proposed building �vill bc centrally <br /> locatcd on Uic siic ���ith a ncw 2sphalt paved parl:ing lot surzounding thc facility. :� stom��ti�atcr <br /> trcatmcat enult with Stom�(ilter cartidges �cill be consln�eted under the parking lot on the north <br /> ' sidc ot�thc building. A infiltration systcm consisting of Stormchtmtbcrs wi�l bc constructcd as <br /> ���cll. 100"/a infiltr,uion is :miicipatcd. Nc�v sanitsry, clectrir,d, g�s, and slnm� d�ain utili11C5��'ilI <br /> also Uc constnutcd. <br /> ' Constn�ction activitics will includc silc prcpar;dion, ll�S(' inst:�ll;ition, cscavation for thc <br /> huilding found;di�,ns and prc-cost concrctc st��mi�eatcr vault. pourcJ a�ncrcic linmdations, sitc- <br /> � widc grading, and asphalt p;rving. 'fhe schcdulc ;md phu5ing af 1��1Ps during cnnstniclinn is <br /> providcd in Scclion 4.0. <br /> t "I hc following summ.�rizcs ciclails rcg��rding sitc arcas: <br /> ■ Total sitc arca: 6.27_ acres <br /> ' ■ Pcrccnt impervious arri bcforc consin�ction: � °�a <br /> ' • Pcrccnt impcn ious arca aftcr cunsWction: 20% <br /> ■ Disturbcd area during construction: I.5 acres <br /> ' <br /> --- ---- 3— — <br /> , <br />