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Port of Evcrett <br />Hydrologic and Hydraulic Report <br />This report is providcd as a summary of all �icthods and proccdures uscd for analyzing <br />thc drainagc areas and suvcwres for thc proposcd Craftsman District I3oatyard <br />Devclopment project, in accordance with the City of Everett's (COE) best managemcnt <br />praclices (BMP's) requircments for Dra�nuge Plans. Calculations and supportine <br />documcntation are provided in ihc aRached appendices. <br />Storm���atcr Sitc Pl�n <br />Pro,ject O��cr��ie��� <br />The proposcd Crafisman Disu�ict sitc is loc,ucd to thc North of the proposcd 13'�' Su�ect <br />und thc proposed L-ast of 201� Ave which are part of North Marina Rcdevclopment <br />InGaslructm'c Phase I ProjccL Thc Craftsman District Boatyard for thc Port of Evcrctt <br />(Evcrctt, WA) is suhdividcd into thrcc componcnts based on usagc and includes thc <br />following; I) Acccss roads and parking; 2) Boat work yard; 3) Ncw rctail buildings. <br />Stonnwatcr 1'rom cach of thesc usage areas ���ill he collected in scparatc conveyancc <br />systcros and will cach bc cquippcd �vith a diffcrcnt lypc of stormwatcr U•catmcnt. A <br />summary is providecl bclow for cach usagc arca. <br />Access and Parkine <br />r\cccss to thc sitc and boalyard patron parking is to bc in t�vo lucutions: thc first parking <br />lot is located to the south at inicrseclion of 13'�' Su�eet and I" Avc and provides 100 nc�v <br />stalls including 3 truck and boat-u•ailcr st.ills, thc sccond lot is locatcd cast of thc 2"`� Avc <br />turncuound proaidcs 31 ncw stalls. Drainagc from thesc arcas is to bc collectcd and <br />convcycd to the 2"`� Avc stormwater trcatment system, consistina of a Stormliltcr <br />u�caunent system, desicncd by RMI, and is to then be dischargcd through an existing <br />oulf.dl localed on 2"`� Avc thal outicCs into thc marina basin. Thc systcm dcsign �br thc <br />Slormliltcr is provided tmdcr a sepcirate pennil suUmival to thc COG (sec Nortli Marina <br />RcJcvclopmcnt Inll•asuucturc Phasc I by R�11) ,md includcs thc rcquircd runoff from this <br />arcu. <br />Boal �Vork Yard <br />"I'hc proposcd ho:u work yard will providc �?4 acres of nc�v work arca. including a new <br />19 �)00 sf bo,u �vash down pad, back of retail shop workspaccs, and -42 new parking <br />employce parking stalls located to the north and west of thc washpud and ncw Port officc <br />building 'G'. Stormwatcr draina�c for this ncw work .uca will bc convcycd to .t nc��� <br />undcrgruund dctenlion syslcm �vhich ���ill attcnuate thc runoff Uratmcnt volumc of thc 2- <br />ycar, 24-hour stocm �vith an ori�icc sizcd to dischargc at u ratc of lcss than 35 gpm. Thc <br />dischargc from lhc orilicc will bc dircctcd into thc ncw sewagc pump station along with <br />thc building scwagc thcm pumpcd to thc CO� corobincd sc�vcr systcm localed in Wcst <br />n4arinc Vicw Drivc. Runoff gcncratcd from storm c��cnts cxcceding thc 2-ycar, 2d-hour <br />-I- <br />