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- 02/12/290� 15:43 425?924576 EASTSIDE CO���SULTAPITS PAGE 02 <br /> ����F Size and Cost Estimate <br /> $TORMWATER <br /> SOLUT10N5 mc <br /> Piepared 6y Kathryn Thomason on February i, 1�OB <br /> CasCade Court - Stormwater Treatment System <br /> Everett, NiA <br /> Informatlon provided: <br /> • Impervious area = 0 385�cre <br /> . Water quality flow,Q,.,,,=0 0594 cls <br /> • Peak hyAr�ulic flow rale, f]�„�,= 0 7R Ns <br /> . Pre�iCing agency = Cily o1 Fverett <br /> Assumptiona: <br /> • Media=ZPG curtndgcs <br /> • Flow rate per r3rtridge- 7 b gprn <br /> • Drcp rvqu�rcd frOm RIM lo ouUr.t= 2.3' minimurn <br /> Size and cost astimates: <br /> The StormPilMr Ia e flow-baFed system, and therelore, is siretl by calculating the poak water quality flow rato <br /> a:�socioted with the deslgn storm. 7he water qualiy Oow rate was celculated by using WWIiM with a <br /> pretipifatinn swle of 1.0. <br /> 1 he StormFilter for Qiis sitc wtis sizod based on treatment tbw mfe ot 0 0694 cfs. To eocommodate this <br /> trEatmpnl Ilow ralr., lsONTECH Stormwater Solutions recommends using a stevl four-cartridge CatchBasin <br /> StortnFilter(sae atlached de�ail). The estimated eost of thia ai�e system is 5�6 000, compkite and delivered to <br /> the jobsite The contre�ior is�esponsible for setling the Catcheflsin SlormFiltor end all extemal plumhing. The <br /> steel Catchsa�h StorrnFifle, tias an intemal byp�ss c�pxity ol 1 0 cfi•, which does not exce�d the peak Ilows <br /> from mis rilr. <br /> D7006 CONTPCH Slnrtnw,nn,�Vi�ry��r. 171G'1�:{y[q�otl WJy.('ntllRnd UR,91'y20 Pece 1 011 <br /> mnm7islnrmavb^�M+r� Ip�.hM�M105�A�61i7 fxx.P00!011771 T&POM <br /> ��� <br />