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:�: . <br />co��n� <br />�� <br />��,��.�� �. „�!»-,»> <br />�.� . � ��a�sm•s� <br />Short Subdivision # 53-97 <br />The Following calculations were based upon the geotechnical and drainage e�ation <br />done by Dennis M. Bruce, P.E. dated July, 2nd 1998. <br />Subject: Driveway and privite access road water runoffstornge for infiltration. <br />4,000 sqaare feet of driveway and private road. <br />Grevel filled trenches 2 feet wide and 1-1/2 feet deep. <br />Per table 3-2.2. <br />4,000 divided by ] 00 =40 x''.04 = 82 LF of gra��. I trench. <br />Subject: Roof- top runoff infiltration systems. <br />Lot 1= 1,900 square feet of roof-top runoff. <br />Trench 2 feet wide and 2 feet deep. <br />Per table 3-2.2 <br />, 1,900 divided by 100 = 19 x 1.66 = 32 LF of trench. <br />Lot 2= 1100 sguare feet of roof-top runoff. <br />Trench 2 feet wide and 2 fsti.dee{� <br />Pertable 3-2.2 <br />1,'�00 divided by 100 = l0 x l.66 =3� LF of mnch. <br />' � : , tY ` � � :. <br />i _ � <br />i �' � � !'f + ' c .+ . <br />I <br />� � �� 'i <br />, , . . � sf• • . � . <br />