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1991-2627 G ~l~5 Category 9-&d.-1 ~ Street Address I 'BIO~~ Serial # ' I Description 7tH ~ Name Plan ck. # Year recdescv ~ SOWARDS AND BROWN ENGINEERING 2187 Newcastle Ave., Suite 202 CARDIFF BY THE SEA, CALIFORNIA 92007 D Œ @ Œ ~ Wi Œ :::::EDBY ... ."I...........,:.......J¡.L.l..... .....1.. t..... .........................,...........{...........t""""""JI........,....1....,........[.............1...........,..1......"'.".'!I""'.': : ¡...........¡...........}..........[.........I !.....j...........j I ~ . I 1 ¡ ; . ¡ ¡ ; i ' ¡. ¡, .. f}èGF ~~~~~~f:~!'....'i~~~~:~:~lf~!~;~tl¡lrJ I RIINGEP¡¡, ¡ '10' ¡', ¡ ¡ ¡ ¡ ¡ ¡; ¡ ¡ JOB q 1- 0 1 UO~f<; I ~ BE;-tY':7të I ~ SHEET NO. \ OF . - CALCULATED BY Ý.5 DATE 1-11 -'11 DATE . , Ii! """"""\"""'."1"""'" ...¡..........¡............ ¡ , I I ."r.."'" .....,..!.,......!.........!.........,. ..¡............. ¡ i............ ; ; ........................,............ . , '. . . '. . . . " . . . . . . . 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DEPARTMENT OF SANITATION So FLOOD CONTROL . . .' .' . 451 . 301 . ./ . 33. , . 0 ...oj . .. :::.. II » . ~:.." , - ".'. .. ; ..... :» en . Ii ": '4S:~~!+¡' ' . . .. P"p8~cI br U.S. DEPARTMEN r OF COMMERCE NATIONAL. OCEA~IC AND AT OSPHERIC ADMINISTRATION SPECIAL. STUDIES BRANCH. OFFICE or IIfDROLOQV, NATIONAL WEATHER SERVICE ?; "'Ø ~¡ S!¡ ,,'I' Ii,: >< ~~ ' ,:1 , ",: : 'I ,~';I .... ' I . I' ' 301. :¡: ¡I! ,oJ .: - . 'j';: I. ': . " . r " '; I'" " ': ..;, :11 :" :¡¡",IIr.I;¡, '117. " J .' ,. . ',5 . ; I ,II 'I' i ;:, !. : !ï' : JO' , .' '1 116. ".-' ,.......~..' ."" " ~' ~ .'. " " " . , ! ' " " ..- -., "" r , ", " c, (: ,I,., ".."L~~"i X'... " '.. "- " ~-' .TABLE 2 " ,', ,-;~ , "",,' ~,". "-::è.-~~, ,,"~----",-,,~,' "":::.~~#.:~;:'. - .. RUNOFF COEFFICIENTS (RATIONAL METHOD) '-.-. .. ,;.,;_.-,... -":i':;"~.~ ' -. ~"""~~,:1~~~~,: -,~ - .'-----:--' --C ... .., ' . , ' " 1 ';.~'-' .' DEVELOPED AREAS . '-,~---- , ..----. '~fflcrë~t! C Soll{jt:~1.\p (1) '. 'c ,- ! ' .' --~- ~,;~,'" ",.,<~~~:~=:.,- ~..,., .70 ~-"-"- -~- ,._~~-, Lend Use .. Res I dentl el: A' - ,1 , ' , , SIngle Femt1y .. .4S'=--:" .40 ,.SQ " , .... Hultl-UnltS , .45 , .50 '.60 Hob II e homes .45 .50 '.:./~.5S .6S .Rural (lotS greater than 1/2 acre) , Conmercl al (2) '80% I~pervlous Industrl~1 (2) 900,<, Impervl ous .30 .35 --,~' J.o ". ,."'t . .45. ' . . .70 , .75 '.80 .8S, ""----, ':,},::::.:;~ -:..;,',---;:~=i--...' --" "'. . -,=~.. -,.8s,-:}?;;ftf~\~~ ' .. , ','," '" ..., "'::,::.,,::, ~',;: '.' ' , .'" ~'~~~ß~¡~t?t>/:.....,.. , :'=~~!f:it .80 .95 ~~:7~þf,.:~..- _...."".."..;,:,~';',::-"",.,,,,' , ~.::"';:":' ". ',--' ., , --,..,'..~,-" ,. :-"".,",.;; ". '-:':,':' "':-',: ' , '.;.',::~ê-~- .'.~~,~" ,.,."....~~=, , '.._--'-'-.:..!, , ", '.." - --'-", , ....----,- ,o..':;';~<-,~:-, , ',..,--.,',. "'" , . '. a. NOTES: ..,.,. --"-~ (1)Obtalnsot1 group from Appendices IX-C'1 thru IX-t4., "'-'.':,':?:' . ':~~~,-;~~:~:: ' .' '. . "'-'~";:':""':""'" "':"':':::;:::;;;;~",ú'=:~':~ (2)W~ere actual condt tlons devt ate sl gnl,fi cantly from the t.b;~1~ted impervl~~<s~~~::~~;:-' ness values of 80% or 9001.. the va1ues gIven forcocfficlent,C. may berevlsed>~~-:;" by roultlplytng 8001. or 90% by the ratio of actual Impervlou,$ness to the~~ '--'-.~:c~, tabulated Impervl ousness. However. I n 'no case shall the ~fl,nal coeffl clet:"t~~;;:;~:-..'" be. Jess than 0.50. ,Fo~ exampl.e; Consider commercial propertY,~,n, D S~I-'.,~~~~~.~::::':.:,." ,...'.' .' , " :.~ . , '.. '." ,:", , ,:: ,. ~ Actual I,mperviousness 50% .,:. T 8.b"u I 8' ted,',,' I mpervl ausness:' 80%_',,',",~,'_:,~,~,_:,~,',~,',-,:.'.,r.;_,:"~,;.,.:,~,,,,_:~',:.~,¡,:,:,:,;',:,.,:,',.~,~.,,' ':.' :' ~:?:~,'~~~;T:~-: -- .-- : ._".'::{;:~~:~::;~::' ,Revised C,- 2.Q,x 0.8S". O.53""~~'!~;~:~<,~::-':" t,'~ ::":'.:~:~~::_"':-': " ,'. ~ ': ';'~'!~'~~"""":;'::~'1iIJ ',,' , " " , . " , . .., " ',',' , : . , .' " '" ',' " "," " , , .." , , , . : " ' ,'.' , ' ',' . ,~' . " ., .. ,',' ' ," " , ,,',' ..~::,' ::~\:,;~~;~?';':~ .., :, . "'" ,', " ,'. , , , " , , " , , " , ' '. ,,',>, ",:"~~-A Deleted ,.":~- -~ ,:"':'~" ,APPENDIX IX~.8:~'":':, I ,'-, -,r-,' ::,':';';',,-=-,',::-.,:-._c--:,-: '",',,-',':' .Jo.:;:.->',' _. -~~,:~:,~~=-'~=:--- -',:;;. ':.- '. ",',::,.' ,,' ""', -- "" " "'.. -""'0.. , '--. "" , --,',