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Plans • . FLOOD PLAIN SURVEY . GILBERTSON JOB #92 -28 16920 GREENTREE AVE. FOR ERNIE RIVAS JUNE 15, 1992 LAK9 OR : a' (503) 635 -7590 ELEVATION FOR 100 YR. FLOOD WAS DETERMINED TO BE 133.7 ENGINEERING AS SCALED FROM THE 1978 "FIRM FOR TIGARD. BENCHMARK WAS THE PAVEMENT AT CENTERLINE EAST END OF BONITA RD. BRIDGE OVER FANNO CREEK. T1;E EXPECTED RAILROAD SPIKE WAS GONE, SO WE HELD THE PAVE �MENT TO BE 137.23 FEET (NGVD). REGISTERED ( ; PROFESSIONAL HUBS WERE SET AT LOCATIONS MARKED BY CI; ` LAND SURVEYOR THE TOP OF EACH HUB IS AT 1333 (NGVD). .�o �, a 6 /iS /°� 2 116;1:010 0 OREGON ^ SCALE: 1" =5tr' Doua ®�e�TSON • 1/2" IR l . — •--- - - - - -- . `` 1 DRIVEWAY W F g i ,> ' . "“ zi 94 \ . �� Z Y ( -� la W d- � L . o W X TAX LOT 1300 �------ a Z W FLOOD PLAIN CONTOUR CITY OF WARD o , =133.7 AX 'S [ I: X Cor J; \ ro "la Approved 14-11— For , nifr , to • ^;Or,-c as described in: PERMIT IN a \ 1; =t �:�ta :,; [ I: \ ', �F Attach [ Ie \ <C 0/. 5/6 IR Job Addre: _ s_ 9 0 �° `� e 5/8" x x S , • IR BY: _2 t Date: _ - _ i i ,, FLOOD SURVEY GILBERTSON JOB #92 -28 16920 GREENTREE AVE. FOR ERNIE RIVAS JUNE 15, 1992 LAKE OSWEGO. OR ' 97034 (503) 635 -7590 ELEVATION FOR 100 YR. FLOOD WAS DETERMINED TO BE 133.7 ENGINEERING AS SCALED FROM THE 1978 "FIRM" FOR TIGARD. BENCHMARK WAS THE PAVEMENT AT CENTERLINE EAST END OF BONITA RD. BRIDGE OVER FANNO CREEK. THE EXPECTED RAILROAD SPIKE WAS GONE, SO WE HELD THE PAVEMENT TO BE 137.23 FEET (NGVD). REGBST HUBS WERE SET AT LOCATIONS MARKED BY 0; ' P � SURVEYOR THE TOP OF EACH HUB IS AT 133.7 (NGVD). pp/� * .0 51 i, .cUli 64 s- /o 2 0 OREGON JULY 15, 18e3 DOUG GILBERTSON SCALE: 1"=50" - 2047 i 1/2" IR I . • • I -• -- - . - --- ,;' _ DRIVEWAY w g 11 14 P ..k -**. .0.ck !II Y Q Y • •. w _ -+-) w c o It o w x TAX LOT 1300 U o g �- FLOOD PLAIN CONTOUR =133.7 x (f) i V Op 5/8" IR Jr X /8 " x x S IR N