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I <br /> Stormwater Management Report Everett, WA <br /> I <br /> I Exhibit D <br /> Pond Volume Calculations <br /> I <br /> I POND VOLUME CALCULATIONS: <br /> VOLU1vE <br /> I REQUIRED ADDITIONAL POND VOLUME APPROX. 2,305 CF <br /> I EXISTING POND VOLUME APPROX. 1 ,465 CF <br /> PROVIDED VOLUv1E INCREASE APPROX. 2,560 CF <br /> I PROPOSED POND VOLUME APPROX. 4,025 CF <br /> I <br /> IExisting Pond <br /> I Elevation Area Average Average Volume Volume <br /> (SF) (SF) (SF) (CF) (CF) <br /> 564 100 199.5 199.5 <br /> 565 299 504.5 504.5 <br /> I 566 710 1071 760.41 <br /> 566.71 1432 <br /> Total = 1464.41 <br /> I <br /> Proposed <br /> I Pond <br /> Area Average Average Volume Volume <br /> I Elevation (SF) (SF) (SF) (CF) (CF) <br /> 564 523 820 820 <br /> 565 1117 1504.5 1504.5 <br /> I 566 1892 2396 1701.16 <br /> 566.71 2900 <br /> Total = 4025.66 <br /> I (SEE EXHIBIT D1 FOR POND VOLUME EXHIBIT) <br /> I <br /> IPACLAND Job # 50183001 Page 12 <br />