Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
CDP 02-24; ST. CLAIRE RESIDENCE; SLOPE STABILITY, NEAR VERTICAL TEMPORARY CONSTRUCTION SLOPES, EXISTING CONTIGUOUS GRADED PADS LOCATED AT 4575 PARK DRIVE AND 4588 ADAMS STREET; 2010-10-28
f" ·• I . ' ·October 28, 2010 .. . .. .-·, :· • ; t •• .. :. Kitk P~tri~k E>eveloplJ?.ent, Ltc·· · . · ·Attent1~ri:,Mt. Ty Rossman!'.\ ; · .-· ·· ,P.O. Box 3811 Manhattan Beach,. California 90266. >. .. ~' . ~ , . t • '! .• . '. .· _--:-tb-P··oi_,,:#·< , ·."' . ' .. I • ·. 2450 Auto' Pa"rk0WaX: . .- . . Escoi;idid?: California 92029°1229 .. , ·. •.... ...; • ' · · • . ~--,,Pho~~ (76_0) 743-IiI4,. ·. .,.' · . . . . . . " . . : . : , · · Fa'x(76b) 739-0343 · · : '• .. --. ·, RECEWE1i".. _· , ·, . · -_. ; ( / DEC'f•/2010 , ..... · ... '• ' ' ~ . .· . . . . ' -. . ' ' .. ENG~NEER]NG .. _ ; •.,. -"' I •~ '.. -,. ·OEPART¥ENT· • ... j •• '.· : .... ' • -. ' • • ·~-• • • • • , • .·, • •• ••• • • • • ., ' • • • -.~ : : -~ • • ' • _·. -.. ,. • • • • j • • • • -· ' . . . SLOPE STABILITY, NEAR ~RT-IC~ TEMPQRARY.CONSTRUCTl,ON_ SLOPES, EXISTIN,G ·. '·co~TI~UOUS GRADED_PADS LOC~TED A'.f . .m;,~~ D~ AND~ A:DAMS STRE;~T, · CARLSBAD, CALIFORNIA · -. ' · . · · _4'75-. . ,, · . . . -:rSff_ . . · · . .. . , . . ... . ' ' ., . . ..... -~ ., ·, ... -. . I .. ,. INTRODUCTION:', ' : ~ ., , ' . . . ,, ' ' -Pad ~adhlg for the above-re_fe~~nced ~;~perties was.observed-by this office t~ 2005. a~d--2006.--_Up~n' .•' completion, the 'following compaction rep.Orts were issued by ·this office: . . ' . ' . : . ' , . . . ' ( . :-.. : ' . . . . , . •. ' . . . : . . . \ ~ ":: ... . . . . ,. , • ._ _ • ' y • , ·,t · · • _ . 1 :~ · _-_: e • ': .. • ~. · -• ~ •• , I·. 1. ·':As-Graded Co~pactioil.Report and Fo~11datjop.;Ilecomme11dations·for Proposed ~ingl~Family _' . '. . . ... Resid~ncetocated at 4 7 5··-ParkA venue; City o( Carlsbad Drawing #423-.8A, Project ~CDP 03-12," . . · _:;. •. •, .; j. ,. .. 'Job #05-422-F; .date4 April 25,-2006 .. ·. >. : _'." · · , , . . . : · · · -' ,-,· . • • r ~ ._ i • . .,. , , , •i, ~' ,_ , • ' • . · i ·~A-~-Graded_ Co~~a~tion Report· and E ouridati,~ri RecommJndation$· f6r, Pr_o~o;ed Singl~F amily . R~iderice-Located at 4488 Adams Street, City of Carlsbad Drawing#.412-2A~ Project #COP 03~ 12," . -· , · · · Job. #05-423--F, dated .April-25, 2006.'. . -' . ,-. -;; . , . . -· · · · . ' . .. . . . . . ' --. . . • • , f_. < >' : I •' : • -~ •' '. : ,l, , • I • < •• ' .: ,; .. " ;" • , tr ' •• :._ • ~ • •. · .. Prior _to site gi"adip:g, ~Jle--properties :Were studied for surface and subsurface coilditipns oy this office which . ::result~_in_the)ollo~_mg_ tec~cafreport:'· · ....... . . ~ _· ;, · . , . -~. ,_ . . , ._' -: .. . ';._.. . . , • ,I-' ~ • .. • • ' • •• .!, • : • • • .~-• • .. • • ~ • < ' • • • _,, .. · · · 'L "Preliminary Geoteclinic~l Investigati<;>n; Und~veloped Hill~ide Lots; 4588 Adams Street,.Carlsbad, · . . ·-~alifornia,''Jqb #02-108-P, dated Feb,ruary··i1, 2002. · · · · . .· · .' _' · .· · ;_ · . .~.. . . . . . ' " ·,. " . . , _,,.. ,.:.. . . . .. . . . ' ' \ . '. . . ... , . . : ' :J ' . ·. -. ' . -~. : . . . . J ., ' • . • • ·-. :1. ·, . • ~ . . . .. . • . . _·. . • . , . ~ ·-. .j; ' ' ._ . The ab9ve ~efetenced compaction reports _and preliininary-invesii"gation were_.reviewed and'copies are ori file · .. _. _ .: ,with'our office." . ·_ . · ·. \ . ,. . . . , ... · ,: , • • • ' • ', '. • ' .... ·" : .. ' ~. • ' • • ,I- • • ~·,' ~ ~ £" • .,. ~ •• ·~ • ·' • •• ,. ., -' ••• . ,: '. . We ·unf:ler~ta114·tliat 'tiie subject p;~perti~ hav~ s;t_ idle anlr~iri-~qbst~ntially ~nchang~<f sine~ th~ js~ue 'of.' '. . .' , : -tqe· COJnp~c~cin reports,, Th~ ptq'pose.'of. ~~ letter. !s ,to: addres.s > t~~. teinp~ir~ry consfrucdo.n slOJ)~ at'~()~ ·; , ' prop~ies which were· cons_tructecLn~rly 4~ years ago .. ~d remain .. :A site yisit. ~as c~md~~ted py the -undersi~ed. in connection with·this 'effort on October 27, 2010.. . · ·, _._ ··.: : . ··• . .. I, .. 0 '•.. I ; • • ~ • • • I .: ,' ' • • •• • . • 't ' . _.. ., .. .) r'.. . ~ . . • . . . . , ,• .... ·, ,' ' , ;,., .... .. ·:·· .. ~-·.: • •• . , ·: :· ; .II .. ' FINDINGS: '',' :·' .-·. , ,' '. '' . ' \" ' , ' ' ' '. . ' . • ,'.: .··,· .. '-~.:;.'. . ', ".:, .. ,_ ,: '· ~: :. ·,:: \ :·.,_.·.';,· .. '>" ;•.'-·._·:, .'. .. :. :_':.'' ·_.··. :·· · .. · . , . . · . ·· : · , Ten;ipor~uy construction slopes at_botli.prop~ies are largely.in the:19 feet high.range,'b~t do lo¢ally approach . . :.: · ·: : '· .. : . '· 12 feet hi~-in~um: The slopes generaiiy ·occur·m near vertical con~tions ~thin the bottom'4·to.(,~feet·and '. . •. " ; ,:.. ·:::-: '·: . ; . :. . . . ' .. ' .. -', ·,' ..... :. ':-.: '.; :· ·, ,··_ . ·'., • ·i'·-.. ';~ •• ' .. ", , . '· · .... ,: ·:· ·. ,-: .,-'' :-'.,_. ;':. •' ,. \ •, ,~ .• ' . ., . ,'I~ •, • • I • ,. t •. ·'· ' . ' \., ·. , .. . . .'· ' .. • ·., ... . ,•' ••• ,. ,· • •i •• • ' ';. t'.. . ;' .. •• ~ .• '.,,i.,, . '., .. , :, . • • j . J .. > •• , •• _ . ·~ .. :; /· ,. ~ ,. ; • • ~ .,,, '• \ ; •• : I J-,. •· ' . •• ~ , ~• ·. · .. ·: Sl~~·Stabili~-N~r ve'mcalTe'u.pora~ Consµ-uction Slopes _ · · ·.·. -~ .· .. I ·:rage 2 • · ~·- , ·., 475 Park D'rive ·and 4488 Adams ·Street,· ·earls bad .-· · . . ", · ; October 28, 2010 , , .. : . ' .. . . ~' ·_,: ; !,.._ .. ✓ ·., ·-•• -~:~: .. ·_ ·.~_•· •• •• ~---__ :·, • • '": .. _·•· .. : ....•• • •• ----~~-• _· ~---'. ~. ) • ..._ .. __ ,,, __ : • • .·<: .. ~ ... ~: . · _ range fro~ approximately ¼) t<;>' 1: 1 (hor~onuil to \'.ertica!) .~hove. The C0!15trucW)~ s~op~ are in s_ubstant~al. ·. · ~nforma.tice with: ciur recommendations pr~~nted. in the preliminary-investigation (referen~ ~hove) and, were. . . ,. .. · · expected.to·be temporary slopes with wall and building-constructiontofollo,w-ii1 a·timely manner. However, . ' we ~de~stand that the· temporary comtruction ~lopes_ remairt as constructed-in 2006. .· :: : ' . . "-• ·• • ;" • ;. ,. . • . I -• • ._ '•t \. \ •1 • . 1. I • f' ' • I • ' • • • • ~-. ~ ·~ . ~ . ... .· -., ,, . . ' t·'. The foll?wjng-was·not~l;. . : . _ . . ·:. _. _ ..... : .. ' .. ·. \·. · .. ·<--. ·: -' .... r, • : 1.-Th~ tenmoraiy ~lopes _are largely cov¢red ·by jute matt_i,tg. ·. , . .•. -.. ··.,. . ,· . . . , . ,, ..... !! · ... -·.' . ( 2. · The s~op_es expose cemented san~tone deposits: : · . . · , • V, . !, .) • I" ., • •. -;'· .. 'I ... • : · ·. .: . · :<; .J .. · ~?me minor erA~ion ,arid: s:ha,ll6w ruts'~~ I>.res~nt ~n all te~1for~ :slopes. _. _·(:/~~-:-,. ::~--· .. ~~:_<_ .. · .. 1,,,: i,t • :·· ···-: ~., : .-:.·.J • ~'' -~.~_,, : __ ~. ,• ·/· ·_ ·_ .. --.:-~:-• '\,~ .· ,. • :,:' .;,_ · · 4 · .More moderate erosion is present on,th~·west end-of the n<;>rth· ternpora.ry slope .at-the northern pad' . ~ -. ,-':, _ location (475 Park Ave~ue). The noted etosio~ is-the result.froin-tunoff in~ brow ditch that drains ;_-··,-.. l ~ • .. • . , • , r ~ • i.. • ~ -over the slope arid ont~·the building pad·ar-eas. ~ ' ,·.: , . -. . · · ·-. •; i '· .... ,,·, .. •• _,' •• -·:.~ : ... ·•• • • ; _. ,-~ ···,,.· :: •• ,, 1_ :· ·~ -· , ·,,. ·-~ .. -; IIL -icoNCLUSIONS;. : .. .:-,. ., ., . . . . . . . .. ' ; . • 4, '-• ~ . J .l. • • •.; . ~ ( I ' .,. >-• ~ ' t ' ,.. . • ,. • . • • ' • . . • ' • ~ ~-> -•' -, ' < The t~mporary: cons~~tion siopes were e~pecteo to' be.-ohly teirip<>raty~. Ho~e~er: after remaining ~xpos~ -. ·• :·. · .. · , ·: ~ · ·: fo~/inore ~.'4-y~s the slopes._a_re_.COQSi~ered,to be'perfoin_iing ,well~: l'lot~:ero~i~~ bf the __ ~lopt: faces is .. . . ·,-; , .· .· suiiicial. · No evi.derice;of. deep-seated instability within the.temporary slopes is indicatecl: -· .. · · . . . . . ·: . ? :_. ,> -~ • : • . • • -: . :.· : • -., ... ·• ·. : , ... · .. .-•. , ' -·. • '. •... . ; '. .' ·.:' .• -_ • . . • • :_··. •• . :. • •.•. : --, • · ·.' -: . . .. Tl,ie jute_matt:4'ig sho~~~ be.111:a~n,iined t~ impede ~rt~er erosiqn of th~ slope'f&c~: an~_ considei:att~n shout~.-· · -· be given to addressing the.brow ditch that drains onto the·north building'pad. . . , ~. , ' + ·_:. . • '•' ... ·.: •• ••· "' ' ... -... -.-' ~ •• •• '•·:~ • ~" .· . : ·: · •• · • , ·. !. ') ··~« .• !, . . '. Aii th~ temporary slopes should be te-~~~iuated pri9~ io buildiri~ or w~U constructiOQS. · Addition_al tempora& . ~ slope;recomm,endati.ons, ifwarra0:te<l can btrgiven.at.that time. ~ · · , · . . . . ·,:, : . . -· ..... ·. . , .-: . -· ., ...... . . . ~ , . . . . ~ ... -. .. . . .. -· .. . .,,.. . ....,.. 1, • • t·. ;.. :.-. • • 1--• •• :-, r· " • • • "'-,-•. ~-: .~ • •-. ' ,. -.,J-' •. •• l • ~ • ·~·.: -c·• . ~f .YO:~ have a_i:iy q~estions-'.orn~ .clarification,. please do not li1?5.i~te to contac~ ·the-UI1dersigned .. Ref~e))ce t<>· o~r Job #0.5 .. 422. and 423~F~ will help to expedite 6ur response.to your. inquiries.· . . , .. · .· - ; . , ., ~ ~ -~-,. . \ . . ... . '·. , ~-... , ~ ., ·. ,. .. · (·\ ,' . ._ ·, -. '-w: app'reciate this opporttjnity ttj be ofservi~e·t~ you .. · · ·• .: . ' . . . . ~ ·- • • , .. ~• ••• ; •:. •'f -.~,""-~ .... • .'••; ,.•: -,,, ~'• •v•,-, ,1 •• ••'f• • .. , .. . I ' ... , ,•. .. .. ' . ' i , .. . .. , .. : ' . ' . . . ' . . . ... ,. , , ' .. , -~~:::!:::::::~~=;;::.4J~.L..~:::::'.';~~-L..._..J.'9=/. .· -. ·":. ;~,.. / ··Steven J.·Melzer ' -,. ... '1 ••• CEG,#2362 · .' ·.· _ . .. ,· '. . . ~ : ' . _· SJM/inpt ·. '. .. ~ /: · ._. --.........--'. ~ , · .. ,:• ') • -., . ; "'-1. I • . •; • I ~~ files~d~g d~t pT\>~ts\&5-42~-and ~23-f ~ kitk-Piitrick_devel~jnnentlslope sta~µity ti~ vertj~J temp~~ctio~ sl~pes l~tter, . , • -J. • ' . , . 1