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Runoff analyses for the 2, 10, and 100 year - 24-hour duration storms were <br /> performed with Waterworks software, and the results are inciuded in this report. <br /> Based on these calculations, a detention wet vault providing 4,824 c.f. of live <br /> storage and 6,210 c.f. (vol. = 3.50'dx30'wx60'I = 6,210 c.f.) (greater than the <br /> 2,187 cf required) of dead storage will provide the necessary capacity to handle <br /> up to the 100-year storm and meet water quality requirements. <br /> Please contact me at 360-657-4709 if you I��ave any questions. <br /> Sineerely, <br /> �����.� � �� <br /> Ernest �. Berg, P.E. <br /> Berg Engineering <br /> Attachments <br /> Z .L. g <br /> ���1��of w�5„,ti��C <br /> 1 <br /> i L � <br /> �. ��.� ���1� �� <br /> J574B '� <br /> .,;or . qfc7STE�� .;�,�,F'Q' <br /> �'y _„�q <br /> d2%7QZ G�-� <br /> �I'.ipires i/27/�.'006 <br /> C:\Documcnisand Scttings\Ernic\DcsktopVanc_Zinuucnnan_I;jorkvik_CoUagcs_Drainagc_Rcport_REV � �\ <br /> 031 IOi.doc ������ <br />