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Savin ngineering (916366 -1466 IX;10 Shcl(kni It(xid, Islk (,rove, 001r ,vida 05(Q-1 Feb 5 , 1979 page 3 5 . STORM DRAINAGE : continued b ) Street B will be constructed at or below elevation 30 .0 to provide a direct path for flows through the i. project from east to west. c ) 100 year flood elevation will probably be controlled by the elevation of the freeway 99 low point at station 178+50 , 1150 feet north of Arch Rd . This elevation is 32 . 16 . Depth of flow across the freeway is estimated to be 0. 3 feet - Flood elevation 32 . 5. d ) Buildings on the eastern third of the site would not flood with floor elevations above 32. 5. Buildings on the center third of the site could flood to depths of as much as 0 . 5 foot , with floor elevations above 32 . 0 . Buildings on the western thitd of the sita would have floor elevations of about 31 . 0 and could flood to a depth of 1 . 5 feet . e ) Building, slabs will be constructed aaove elevation 33 . 0 where-er possible . f) All deeds and lease agreements will contain a clause stating the possibility of 100 year flooding and hold- ing the County harmless for any damage . g ) Buildings will be primarily concrete tilt-up construction Flooding would not couse strucLural damage . Contents of buildings will be protected by sealing building openings with plywood and coulking when major flcods are threatened . From 8 to 48 hours warning would be available through weather rept rts . h ) It is aesthetically and economically impractical to attempt to construct all floors one foot above the 100 year flood wnich. is Stated to be one foot above existing ground at the eastern boundary . This would require floor elevations of 35 . 0 and require building fills of up to 5 feet . This amount of fill cannot be generated onsite and there does not appear to be any practical borrow site nearby . Elevation differences between streets , parking lots , , .- and buildings becomes excessive and access to buildings becomes difficult . Buildings would appear to be constr ted on pedestals . i ) It appears more practical to seal buildings against the small depth of flooding anticipated , than to spend from 0 . 5 to 1 . 5 million dollars on fill to raise slabs above a flood level which has never occurred and may never occur .