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t <br />* Ernst Associates <br />BALOUR PARK <br />3/29/82 <br />Mr. AT Olson/Planning Department <br />V, <br />• 1 ‘ ’ <br />; « if------- <br />. > t* .1 <br />‘"I MAR 29 1962 <br />II ' <br />:U. <br />t t 9 <br />COMPUTATIONS FOR RUN-OFF &STORAQE <br />Sq. ft. Acres Coef. 0 » CiA <br />EXISTING SURFACES <br />Structures, existing house, patio <br />garage, shed 3,173 .072 .9 .016 <br />Gravel Drive 8,200 .188 .9 .042 <br />Lawn & Rough areas 108,417 2.489 .3 .187 <br />119,790 2.75 Qe .245 <br />PROPOSED SURFACES <br />Structures 2263 <br />2400 <br />2200 <br />2000 <br />886^8,863 .203 .9 .045 <br />Git. Paving 11,340 .260 .9 .058 <br />Lawn & Rough areas 99,587 2.286 .3 .171 <br />119,790 2.75 .274 <br />Q» CiA ia.25 <br />6" rain/100 yr.flood <br />.274 - .245 » .029 <br />X 1.98 > Acre Feet Required <br />.029 X 1.98 » .057 Ac. Ft. of storage (1* deep) <br />.057 X 43,560 = 2,482.92 sq.ft. (2,500 sq.ft. 1' deep) <br />■f ^ <br />Sift