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2000 AGN FEB 01 I01
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2000 February 01 Agenda Packet
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2000 AGN FEB 01 I01
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2/25/2014 1:10:23 AM
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THATCHER ENGINEERING & ASS <br />34590 COUNTY LINE ROAD, SUITE 3 <br />YUCAIPA, CA 92399 <br />(909)795-1419 <br />fax (909)795-1486 <br />LAND PLANNING <br />GTS ASSOCIATES, INC. <br />CIVIL ENGINEERING-'L_ <br />SURVEYING <br />Job No. 53401.01 <br />October 1, 1997 <br />HYDROLOGIC CALCULATIONS - TRACT 15784 <br />PRECISE GRADING PLAN <br />Pre -development tributary area to east property line equals 2.8 AC <br />Length of flow = 530 feet <br />Difference in elevation = 7.1 feet <br />Per attached calculations pre -development 100 year flow to east property line <br />= 3.9 CFS <br />Post development tributary area to east property line equals 0.14 AC <br />Length of Flow =120 feet <br />Difference in elevation = 0.5 feet <br />Per attached calculations post development 100 year flow to east property <br />line = 0.3 CFS <br />LP <br />is development will decrease flows to the east property line (due toposed import and grading as show on precise grading plan). <br />Respectfully Submitted, <br />,Thatcher Engineering and Associates <br />MELVIN W. <br />((*(E,xp. <br />HATCHER III <br />"Bud" Thatcher III, P.E. No. 399644�, <br />CIVIL <br />OF Chlo- <br />,EXy113fr „p„ <br />
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