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( <br /> � <br /> ( <br /> ; Po�t of Everctt <br /> � Hydrologic and Hydraulic Repon <br /> � <br /> 'fl�is report is provided as a sununary of all methods and procedures used for amalyring <br /> the drainage areas and structures forthe proposcd Baysidc Drystack Storage <br /> Developmcnt, in accordance �vith the City of EveretCs (COE) best managenient practices <br /> (BMP's) requircments for Drainage Plans. Calculations and supporting documenlation <br /> are provided in the auachcd appcndices. <br /> I. Slormwater Site Plan <br /> � Proicct Ovcr��iew <br /> The proposed Baysidc Devclopmcnt sitc is a 2.6 acre Icase parccl locatcd north of thc <br /> existing MSRC Building and ?4 acres of undcveloped 10`�' Strect. The north entrancc <br /> will be accessed via 10°i strcet. The south enu•ance will be accessed via 13`�' street. The <br /> 13ayside Drystack Stor.�ge Development site is subdividcd into three components based <br /> on usuge and includes the foliowing; <br /> � I) Parking and southern access; 2) 1Vash pad and no�Yhern access; 3) Bo:ll drystack <br /> stor.ige building. Stonn �vater from t}ie (irst nvo will be collected in a conveyance system <br /> and trealcd by a proprictary Stornililter trcatment spstem, while thc roof drainage fmm <br /> the building a�ill bypass u�eatment und discharze directly to the outfall. A summ:rc� i� <br /> � pro��idcd bclow for each area. <br /> Pa�rkine and Snulhern 10��' Strcet r�ccesss <br /> ' The parkin� lot ,;nd additional southcrn 10'�' Su�cct acccss drain.�gc a,ca is .9 arres. It is <br /> locatcd south of:hc baysidc boat drystack storagc facility providing S 1 new parkin� <br /> stalls. Drainage fi�om tliis arca is to bc collectcd and convcyed to the new underground <br /> stonnwatcr u�catment system. <br /> Trcatcd stonnwuter discharges throuah an existim,outfall locatcd on the northwest corner <br /> of thc site that ouUct into tLe 12°i strect marina basin. The treatment system consisls o(a <br /> prcu�ealment �vct��ault followed by a proprictary system. The system desi�+n for the <br /> Stormfiltcr is dcscribed in section V and includes the requircd runoff from this arca. <br /> l <br /> � 1Vasli Pad and Norlhcrn Acccss 10��' Slrccl r�ccess <br /> ( <br /> The proposed wash pad and additional northern drainage area is .514 acres in size and is <br /> located wcst of the ncw building. Storm water drainage for this ncw area will be <br /> con��eyed to the new undereround dctention system which will discharge to the trcauneni <br /> systcm to the south. � <br /> �Vlicn ihc �vash pad is in usc, thc storm drain ���ill bc scaicd off and the wastc ���atcr will <br /> hc collcc�cd in an altcrnatc wash watcr collcction basin parallcl to thc storm���atcr <br /> c��llcction hasin. "I�his basin is cquippcd wilh a pump and a proprictary u�cahncnt system <br /> ; _ � _ <br /> ( <br />