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07-0135 Storm Drain Rpt 060508
e y . ~9 , ~~ ~~ ~a~~ ~~ t~ s= ~ ~ h hereby state that this t~rrn ecart fir the eda's Mental has een prepared by rye car under r~~ supervisien an meets the standard f sere and expertise v~hi~h is usual and cust~arnary in this ernrr~unit i'~ar ressienal er~ineers. I understand that the pity ~f l'elrr~ dues neat and mill nc~t assume liability fir the sufieien~y~ suitability, car err an~e cif drainage aeilities prepared by n~e® c>_, ~~ ~-~,, >; ' , << _ - ~. ~°4.3ti ~~ :`? G' / ~ '°, ~~ 1 T<'(:~~'F (?jtf ,:i h.~ ~ .. __ ~ t¢ 1 g pr~i - ~fi~ir~ity A.r~i~c - Sib®sir~ A,pi~c C - ~thr~i~! ~c~rt ei [~ - for l~rir~e lltir~s rai - qtr lit l~atic~r~s pr~i~c - rti~ar~ end air~tr~ac~ r~~! ® rcaet ~e The Today's er~tat reject is tc~ca~e t the r~c~rh carer c~~ the Sater Street ar~d l°et ~er~e ir~tersect~~n. T'e site c~r~s~sts of parcels 2213Q~i ar~d 217.41Q, bath caf v~ic are ~er~ed 4~1 c~r~r~erc~at. The site tees are Sect~er~ , Tc~~rr~sh~ 17 ~ arse E. See pr~d~ ~ car a ~icir~ity reap. ~citi n iti~n Them have been no erosion problerr~s associated with this site and eve do not foresee any difficult site conitis~nsa used on the sur~veyq there appears ~~ e no fuel tanks or yells on the site. ff~Site r~al~ri cart The site is bordered to fibs northwest y lti-f ily residences an co rnrial building. Jefferson Avenue bor ers the site to the northeast, del Avenue (S 570} borders fibs site to the southv~st, and Solberg Street borders the site to the souteastW used c~r~ soil information rovid in the eotechnical report, it appears that the project area runoff infiltrates into the site soils. Since the site has sash a boo infiltration ability, stor v~ater floes rr~anae ent Neill be achieved y utilizing an nderron infiltration facility. ~ do~vnstrea analysis is not rovi ira this report since i filtration will be utilize e t appears that the site does not accept any off-site runoff. used on the su ey and generally ild slopes, current runoff from adjacent sites also appears to infiltrate into t e soil. g r ar~o fi So titer €~ r a ea 'c~rarca~ .~s runoff from the parking lot ~nrilt e treated using StorrnilterC~ cartridges manufactured lay contec Storm eater Solutions. Treatment will occur opstrea of the StormTcc~ chamber system to ini ize the amounfi of un- treated runoff that is infiltrated into the rouna Three filter cartridges v~ill Alt conveyance syste s ire size for the ~ -year storrn event. anninps uation eras rase fie deter ire the xi urn toorate that the asfi pipe run in the system could tolerate {assuming uniform ~'o~m 'e anticipated maximum flovvrate for the ~-year event v~ras then checked against the maximum allovrale flovvrate that the i e can tolerate. T`he QUO-year storm event flow rate is less than the rr~axi t.am allowable flo~vrate~ indicating that the pipe size chosen {gyp' diameters is ca able o conveying the `lOC?-year storm eventm If the 1-year storm event occors~ it wit! create a flowrate that f!!s the pipe to a depth of . feet {approximately 4,31 Ball}. See Appendix D for conveyance calcrslations. . ®r~sr ctic~ StQr star call ti reventio la ~'he onstrraction Stormv~ater Pollution Prevention tan {S PPP is a separate document. It will e submitted alora with this storm drainage report. ecia e arts ara St~a yes A soil analysis report was co plated for the oayFs ental site by ER, Inc. A copy of the eotecnica! report Cara e found in Appendix ~. ~ ~ .J i1 i a~=~ ,~.: ~~ W ~,;.~' <' ~,,._ ~:~ i ` ~-- :r.*.-,i ~ E c; > ~.> C~ e`_: ca G ~ t_a ,r- 2x ~ A e, 4 ~'t~ y},. - ,; ~,~, ~ t `~ , K ~ `, ~a`3:m ~. ~'~ s~-. ~ E ,~ _% ~ ~ r.~_, Lt`SD~~''~ 3~F.N`3'l~T, I ~ ~<.i~.e~s nT~e ~ " i nt ~ I~ t)= E } F7 # AVE. _ I ~ EL'~3, YA BSJ'7 n~n __ ~ 21 P6 FACiFtC AVE, SITSTE 30D ~ TAC(2[1ln, M1M1+ASkiING"9'Od~d 9S4C+2 ~ Pk#e?17E_ {2&3} 827-+d8e37 ~ F,M C; {?53) P27~339F ~ C?E: (C:Eg~Bf„~Ac~9f3f;~l E`Ek~JNC..COM ®VdYvVti.BCRP.E:J GiNEEF2I FAG.4't3A-0 ~ n- Dctc 1 lotted: L4ar 12 ~UY P~ 4,_c i ~~L_Ilorne~: U SASrlMAP.dw ~" oy JCHP~'~UfJ --___.__... ~r~; 3~x ~439i~ 253-537_e~s~(;p 253-53~-~40 ~ fir E~E~A 3azazzaz-~ ~, 2006 T063~7 ~'e.f~za i~ezxta~ ~ezatc;r, [.,I=,~ 502 4relnx ~vezxzze Wiest °Yeizaa, ~~~ X8579 ~t~tezxtiaxa: ors Sarab Siaczxaaaza Sxzb~~~te ~~czt~chz~ical ~n~izu~ering ~.e~ort ~3 is pleased tcx subznzt this report descrlixag Ilia rasa.Its of our ~eotectxaticai enixaeerizxg evaluatioxx far tlae residential develop ant plazxzxed at 502 ~ eina five pest azxd i 07 Solberg Street lax ~elzxs, aszn~tozx. T`lxis report lace bean prepared far the exclusive use of ~elnx l~entai Ceziterq I:,I;t.. azxd their eonsultaxzts, for speeic applicatiozx to this project, i accordance itb ~ezaez°all~ accepted ~eatechnical ezxsxaeerzzag practice. Tii.e pl ed co ercial develapzxaent as located an the co r of SIB Sl0 azxd SW Salber~ St, in 'elx, zaslaizx~to, as savvzx azx the enclased ,c?c:cxtic~r ~xp Fire l). It consists of o retazxgular parcels that zaxeasure abazat fact fron ` ~ Sly 510 azxd 300 feet fxozatin~; Solberg Street Tlxe praject site. is czarrezztl} bardered by Sl2 510 to the southwest, eiTerson ~1ve to the zaortheast, azxd Salber St to the cast. Surface tapa~z-ap~ is relatively level. 1~fl s Gait for tlxe renxcava.l of the existing laarrze and dezxtl office azxd cozxstructian of a ne~~ dental office, assaciated paxkaxxg, and a sta. v~rater irztiitratioax facility. Tlxe praperties ~vi1l have access franc Solberg St, e explored surface azxd subsurface conditiazxs at the praject site on I~Iovezber 1 , 2006. C?zzr explaratiozx pragrana cazzaprisc the folla~vixxg elezxaeaats; A surface reconnaissazxce of the t~va parcels; Texx test pits ~desigzxate Tl?-1 tlxrouglx `I'p-3~, avazaced acrass the sitee m C}iae 4~raisa ~az~ ~iaal~ses of o~z-sits SOtls; Three Infaltratiazx `l'asts; azxd T~?~~9 i 1 Ye(raa ~~nta~ A z-eview of l~zablzshe~i ~ealogic and seisr~u~lo~ic maps ~~n~l ~iterattaa-e. . . Ta~z~A ~ suzzxra~~r~zes the ~ggz~o.~_zra~at~, tczaactiozaal zoc~taons atacl tez-~ras.rt~wtac~zz depths of our saabsuz-face ~;xg[oz`atioz7s, azad ~'z~tzz-e `? degicts tlzei~~ apgroxi.zzaate relative 8ocatiozzs. `l~lze folic~win~ text sections describe tla_e proced~rres r.tsed for excavati~aza of test Bits. `the sgeci~c zzuznher azz (ocatious of oz~r exgloratiozas were setected in retati~zn to the existing site features, der the cozastraints of sazrrt~ace access, az~d uzzder~,xouzzd utility cozzt7icts. .. '~`st ~ a~zscrl!~rs fur exploz-atory test gets uTre excavated with. ~ steel-tracked excavator oexate y n ixaclgerzdezzt ; zz~sz workhzg under s~ebcozztxct to 13I~r~. A eirzeer froztz our rttt corztirzuozzsly oser~~ed the test pat excavations, logged the slaszzrpace conditions, azzd collected sarzagles. After we logged each test git, the excavator operator back~illed it with excavated soils azad taxzlge tine sbzrf~ce. Inrittr~tiorz Test ~'r~rz~aa~~s e gerforzned faliu~~ head izz~Zltratiozz tests at ~ degtla o~ about "~ 1?eet within test pits .. -l, 2q aazd ~. All falliz~~ React tests wes-e laex-f~ori~ed try ~eraer~d accorctancc wittz ties fallu~~ 3~eact type in~itxation tcstaza~ gzocedure described in the FPf~ gzzblic~tiozz C?ra-site l~c~~t~>x~at~r° ~r°•~alrrrcz~i ~zd ~zs~c~~c~l ~ysterrz I ~c~t~, described below, J~~~~~r~, '~, 2G~?;` ~~~~~; inc. ~ 0~~~~~ f ;~o~~aa ~~nt~~ ~. 6-inch-diameter ~~~ pipe was tataaped ~ to ~ inches %pato the.. soil of the zzpper paz~ of the iaa~ltration layer, then ~ inches of coa~~se, cleaza d~zaiz~ rock was placed. at flee botto~a2 of the pipe to prevezzt seorzring. Sail vas placed az~d taznped. oz€tside the pilae for stabilizatiozz azacs to ~ro~=ezat z€~~=~Ilisa~ o~ test axr~ter aro~i~ad the ~i~e. The pipe was there filled i~~ice with 1. foot of water to gyre-sat~.a~-ate flee test soils. Because, izz all uses, 1 foot of water infiltrated the test soils ire less Haan I ~ r~inzrtes, firz~laer° sat~rration was deeanccl unnecessary and th;;, iarfiltration test proceeded. `I'he pipe was then ~.lled with d izaches of water, azzd, becactse site soils ~~Fez°e forzzzd to be rapidly pezz2lealrle, flee tizaae regzzired for infiltration of tine entize ii izach cohr.zaan of ~~-ater was recoz°ded. ~r1e repeated dais procedure three tizaaes at each test location arad zrsed only the slowest of~l~e ~ recorded aaalaltratioza rates iza our ar~zalysis. 3,11 C'I'F ~f~l~I~I~'II~S Tlae ollo~~jing sections of text. present ozzr obser°~atiorts, naeaszzrezents, fizziaags, artd interpretations regarding, szrrface, soil, ~z°r~zrn.water, seiszxzic,ligrrefactiozz, and inltratioza conditions. o-1 Sr>°ace Cr~aaditiozas °I'lae project site is relatively level itlx no taoticeable change iaz elevation, `I'he ~~2 ~ etrn Ave west paz-cel currently has an existing ~e entai c~l#fice and I07 Solberg Street currently has a hozrze on flee lot, `I'lea reraaainer of flee sites are yard or par ~;. egetation onsite consists of grass azad sorzae small yard trees. Igo signs of szzz.•face flaw, szrch as stream cli eis oz' erosiozzal scars, wez-e noted during our recozzslaissance. Ito ponds are onsite. Alo seeps or springs were oser~-ed. `I'lea ezaclosed exploration logs provide a detailed description of tlae sail strata. ezacorantered in ozar subsurface explorations, 3.`?.I Falzratr~ ~esia~~ tour Crain Size Analyses of the sandy gravel in test pits -I4 foazzad within. the zone where infiltration will likely occur (7 feet belaw current grades indicate fleet the silt contentrs irz the ra.zage of 5 peaceni. Th2 iaeui.~,ciarc Gi3r"xicici of ,~e~ii.s i%viili.iii s`a:sc ~.iirtc iaf °crxa €ztrsacloii is iiuvis.%,~i ~crs^,cia.s. as vJ~il_ tv~£; aa'ti~s.}ia~i iiez rsi ii alit upper soils as being .lose to optiaszuzza moisture. `t`lze enclosed laboratory testizag sheets graphically present or.rr test results; and fable 2 suznzarizes these results. ..~ rotzzad~vater 6aotaditios <~t the titaae of our recaztxtaissanee (~ovexnber ~.~, ~(?Q~a}, ~~ra did net alasarva grou.ndv~pater iix atay of our explaratians, ~vhicla extataded to deptlxs afzzp ~,a l.4 feat. i~la sigxai~caxat nxattlixxg was atasarved. It is not atxticipated flxat ground water will ba aaacountered ds~ring typieai oxxsite construetian activities. Seasxxxic ~onditiotxs Based eta our analysis of subsurface expioratiata lags and our review ofpublislled geolagic ttxaps, eve izaterpret sail canditios an tlxe site to carrespaxad whiz a seisrnic site class S~, as defitaed by gable l fi 15.1.E of the 2l}Q~ Ixxtez°zaatioraczl.E~uilc~itxg Cra€~ 17~~;). ~ccordirxg to tlxe I13~, the site is Seistxaic R.egian 3. L,ir~ttef°atiozx f'otsazxtil llirluefactian is a suetx. increase its pare watez pressure and a sudd.ezx lass of sail slaeaz~ stzezxgtb caused by shear straizls, as could result ant eta eaualie. lZasearc:lx leas so tixat saturateds lease, nee to tneditt sands with a Vines {silt d clay} content less than alaout 2d percent are mast sxzsceptilala to liquefaction. e did not observe easily liquefiable sails ansit~°. 3.7 tt do orxditiox3s ~ sto .water inftltratian facility is gala ed far ties site. In our tlxrea test laity lacafed in the vicinity caf tlxis facility, test pits TP-l., ?, and 3, we observed loose szlty sandy gavel witlx a Vines content tlxat averaged a[aaut 5 percetxt. ~ccrardig to flea LI.S.f?.~1. ~'e ral'I'ri gle, saur labaratary a.lysas oftlxis soil indicate that it is a gravel, cotu-se sand type .~ with arx in~ltratiotx rate +af i xxainutetinclx. Tlae results of our itafiltratiozx tests are presented in 'I'aiale acause izal=zltratiota was zxaaerately rapid, we recorded the titaae necess ,~- far a 6 ixxcla high cola x of water to inl•dltrte completely as discussed in sectian 2.2 alaave. F3ase eta. ozsr Meld. testing, tlxs/ Average lzafil tiozx late far sous at a detach ref 7 feet is 3.0 mitxsztes per inclx. A f~er incat~aaratixag a f'actar of Safety of ~, we recatnnxexad a esigxx lxalt~•atioza R ate of minutes par izac (1 tl inclxes per boor}. '~ ~. fd'lial, l~ 't'~`Y`ll~l S`~ SS Vest epth zeiow l~'zeid fait tioxa ate for b u . br oczatitx ~ "staxxg grades inch o1iB {feet} `l'-~l TP-1, pat°izag at-aa `~ 2(} nxirzl6 izxces 'i'-2 `#'P-~, ~a-sans yard caf ~raznc ~ 1 ~t~ tua~/~ inclxes 'f-3 ~~, back yard of honxe ~ naua/ inches J~sra^~.~~r~ t5v2".~p7 ~~~A_, irac. ~.f1~S.~.Eaf ~3~i.lli ~i .FT~~A.e 3J i,~.Fif~R1~-1 [~91'~$~~.T~L.4 Plazas call for the preparativza of ~ new dental office, paved parkizag, azad azz~itz-atzon ol: storzaa watez~ oza sitert ~Fe offer flee fol[owirag conc;l.zzsiozzs and recozaaar~ezadatiozas: * ~easibilit~: used oza or_rr geld explc?r-atiozas, researcia, azad analyses, the proposed developzzzent appears fea_siLle froze a geateclzzaical standpoint, provided that flee z°ecozaazzaezadatiozas ua ectioza ~ azad zzz dais r-epoz°t ax-e f4allowed. Fozazadation ~~?~tiozas: tie recozazznend c:ozavezatiozaal spread footings szzppoz-ted oza firzniy ccazazpa~ted zaative soils. Recozaazaaezadatiozzs for spread footings a;re provided in Scctioza d- * Floor ptiozas: c z-econazaaezad either a cg~zac;rete slab-on-grade oz-joist-supported flooz-s for the proposed. eozxzrzaerciai strtzctzza-e. ozne ovez--exca~fation. will e necessary for slab-on-~ ads floors. tZ.ecornzaaendatiozas fczr slate-on-ga-ade tlooz-s are izaelzzed i Sectioza 4. * (~nsite Int~i€ration. based on onr ozasite izafittratioza tests and soils analyses, e z°ecozzazzaend at L~es.igrz tnfiitratioza Rate of zaaizazztes per inch for sails ixl flee vicinity of ties pI ed iza~itrati~za fac-iiit~~_ * asphalt Pavezaaent: Strzzcttzral fdl szatataases aiapear do not aiapear to tae necessary provided. that szzb-grades az-e compacted to ~S percezat zalax~ zzzaa dry dezlsity, ,~ paveznezat section, consisting of 2 izaches of asphalt pavza~ezat over ~ izacia crzashed rack base, is recoz ended for tine pl ed parking area. T'lae foliowizag text sections of this report present o~z° specific geotechzaial cozaclusions azad reco endatiozas concerni.zag site preparation, spread footings, slab-oza-grade floors, drainage, sbrade wails, ands ctzzral fill. 'I'lae t~D~37' t .lard pecicati~ns azad tazadard l s cited herein refer to x~T publications li!t4 i -i f3, RStana~°a~ ~S~ecifzccatae~s ~caa• R~ac~. Z~rica'~;~, ncl.raacipr~~ C°otr?~ctic?~z, ti '~1-~Jl, .S`t~r~ar°d Plcz~~.s~`'czr R~racl, ~t-ic~~e; cane tl~arzzcz~acrl C'atz~truetir~za, z-espectively. ,3. bite Pry atinzz Preparation ofthe project site slacsuid izavcalve erosion control, teznpor drainage, clear%zag, stripiaa, cutting, icing, excavations, grad szzbgrade cozxapactioza. Tezaz oraz~raina~; 4~~e recozaazxzezad intercepting azzd dive ° zg zay potezatial sources of surface or near-szzrfa.ce water witlazza ties ccanstruction pones before strippissg begins. E3ecause flee seiectioza of aza appropriate drainage system will depend. can tine water zzazatity, seasoza, weatizer conditiozas, cozastz-aa.ction ~(~~39~ /'z`~it~a ~~ti( scquenc.e, azad cc?zatractor`s rxaethods, tdzaa(decisions rf~gardira~ draizaage s~=stezars az•e best made in fire fielc1 at the tizaae afconstz°uctic~an. Basc:.d ore our ct~r-rerat uzadersta~adizab of tlxe cazastr-actiorr plans, sur-faee arxd subsaasface cozadition~, we azaticipate that ctarbs, lier-rzas, or• ditches placc;d a~•ozrnd the work areas ~~=ill ade~uatcly intercept sr.rr~face ~~rater rrrnaff, Sib~z°ade ~ozaapactioza: exposed sibgrades for faatizags acad. tloazs sliazzld e ozxapacted to a firxxa, urryielixag state before new concrete or ill soils ar•e placed.. y locali~~;d panes oflaoser granular soils obsez°veai witiza a subgrade should be cozaapacted to a density cozaanaezasurate with the szxrroining soils. In contrast, azay orgazaic, soft, or pttznpig soils observed withx a. sugrade should be ovrexcavated and replaced. with a suitable s aural till zaaaterial. Site illin~: Quz- conclisiozas regarding the reuse of an-site soils aid or.rr co ants regarding wet-weather filling are presented szzbsexrentl~f. 12egardless cafsoil type, all frll slaazdd be placed and caznpacted according to zaur recazarzaaedatiozas presented in tlxe lrtxctrcrl F"i~l section afdais report, Slaecifzcall~f, bidding pad X11 soil should be acazrapacte to a ifa density of at least p percent b ed on AS~'IVI:1v3P1 SS7~. tin-Site Soils; e offer flee following evaluation oftlaese orx-site soils i relatiaza to potential use as structural. .fill: ~z~r ei1,S`~ cxta~ ~'ca~saal: 'ftac sod azad topsoil naazatlirzg the site is nczt siitable for ise as s aural fill incler any circizaastances, due to laigla crrg is etantezat. ~cazxsequently, these zaaatez•ials can lee used only fear zaoza-structural puz-pases, such. as iza landscaping areas. l3lc~ck.~s~z: `~11e black silty sandy gravel tlxat underlies flee site is c ently zaear optiznuzaa xzicais~are content d nailat possibly be reused as structural fzll, depezading on conditians at tinge of cozastraxction, It is mare rncaisture szsitive theta flee outwash below and wiil be dit~zcult to reuse dicing wet weather cozzdztions. tlZacial ~?~=~sla: `l"be sazady gravel witia cabbies azad boulders drat underlies the site is c;urrezatly near apti rnois e content azad can be reused stz•uc al fill `flzis soil is less zxaois e sensitive azad a:aza likely be retread iza wet ~veatlaer conditions. S~aruacl l~ raotan~s ;za oir opinioza, coravezatianal spread footings will pra~Ticie ades{ite szzppart for flee proposed stricture if flee sibgrades az°e properly prepared. Ze offer t11e follaw.izxg cozaaznents azad recozxzrzxendations for purposes of ~~ar?t;ay 5, 2~~:f T~E3~E I4'a[r~~ ~a~t~l fasting design. and. cszrstrazctisn. ~~'~~`~; inc.. Fsetzz~ff f3epths and ~%idths: Far mast az~ck erc?sisr! fraie~aian, tllc tease of all ex~erisr fastings shauld bear at least ~4 inches belsw adjacent sutside grades. `t's lizxzit east-canstructisn settlements, cszitit~auous (wall) and isslate~ (csitzznn~ fac?tings shaukd lie at least 1 ~ al~d 2d iz~,hes wide, respectivel_ 13e_ ,arz~ng Srzb grades and 13ear%az~ 1'z-esszares: `fkze zaative ashy layer acrd gla~.iai sutc~=ash ~zndez-lyizzg the prspased ba~ilding faatprizzt at saabgrade elevatisz~s will. adeclzeately sa.~ppsrt spread. l:astixzgs. Iz~ gezzeral, befsre Bating csztcrete is placed, azly l.acaii~ed zaszes sf lease sails ex.l~ssed aez~ass the fasting sz~bg~°ades shcazld lie caanpacted is a firtzz, uz~yieldiz7g canditian, <~ncl aazy lacalizc;cl zanes of ssft, arganic,, sr debris,laden sails shauld. be aver-excavated and. replaced with suitable strc~ctiaral fall. Sub~z°ade C3bsezwatisn: mil fasting subgz°ad~s shszzld cansist sfeitizer fzrna, aazzyielding, native sails ar suitable structural x.11 materials. Faatings sizatald nc~.=er be cast step lease, ssft, ar fi-s~c,n sail, slaugh, debris, existizzg azzacsntrsiled X11, ar surfaces cavered by starzdiz~g water. ~e recaz~ end. that the csnditiaz~ sfa subgrades be sbsea~ved by an .'3 representative befsre any c;sncrete is placed. e g Pressures: I our epaisn, ftar static leading, fsatings that bear on raperly prepared sub~rades can be designed far the nz "n~ aliswable sail bearing pressures af`~S(l psf, ~ sne-third u}crease in allawable sail bearing capacity may e used far chart-te leads created by seismic a~- wiazd related activities. Fsatiz~g_Se~tlerraents: 'fie estiza~ata that fatal past-canstruction settlements of praperly designed faatings bearing s preperiy prepared subgrades will net exceed I inch_ Differential settlements far corxaparably leaded elements nay aprsacia ane-half of tizis vhae aver hsrizcantal distances sf appraxirnately 5 feet. ~'ast%rz d tewail ~ac~~11a `Fs pravide eras%szz ratectisn azad lateral Isad resistance, we recaz~mend that all fasting excavations e backfilled sn bath sides caf the faatiaags, retaizaing walls, d steznwalls after tine cancrete has eared, Either imparted strrzctu:ral X11 or nan~-erg _ic oza-site sails can be used far this purpsse, contingent on suitable oisture content at the t' . e of placement. Regardless of sail type, all foe ' g acl~fill soil should be ccarnpacted to a density of at least kl percent (based on s~S'TN1.D-1 ~57~. Lateral lZesitance; Footings that Dave been praperiy bacfalied as race ended shave will. resist lateral n~zaveanents by means of passive earth pressure and base frictian, e recazxaend using an allowable passive earih pressure sf 3Ql? psf far the granular bacl~ll. ~%e recsz end allawable base frictian coefficient of G.3S far granular soilse Slab-C)r:-x°ae IF'caa~x°s l_n cur sinion, sail-supported slab-era-grade floors can be used. in the prsposed structure ifthe sugrades aze properly' preared_ ~+Te offer the folla~Fing cazrzzraents and rccazrazrzendations cencernaaagslab-an-grade :deers. I~'laar Subbase: Structural till sailaases ds net appear to be needed uzader soil-supparted slab-on-grade fiosz~, if flee e~:isting native subgr-ade caai be tharaulaly corzzpacted. if subgrade can~zactian is net feasible, we race send that granular fill e placed to a depth sf l izrches below frail sztbgrade. ~a~~xi~~,ry 4,; 2G(? i f3~397 F `~'eir~ Uental • 3~rirza~~ S~str~ts ~~e offer the folto~viaxg recozranxendatior~s and coz~nxents fog- draizxage desi~x for cozastrnctiozx pz~rposes. herunetcr f~raizxs: ~'e recozxarxxend that the bz~ildings be e~xcit~cled with a perizx~eter dr~t.in systerrx to collect seepage water. `T~1xis drain shoztid consist of a ~ -inch-diaaxxetez- perforated pipe within an envelope of pea gravel or washed rocl~, e~tendizxg at least ~ izxcixes on ail sides of the }xipe. "I`lae g~z~avel envelope should be ova°apped with Ater fabric to reduce tine zxxigratiozx of fines fronx the sureoundi~xg soils. Ideally, the drain ia~xvert would be izxstalled zxo znoz-e titan 8 incites above tixe base of the pe~-izxxeter footiszgs. 5ubfioor I~raizxs: 13ecazzse floor s~abgrades will ozz a graztzziar zxzatez°ia~, ere a zxot rect~nlzzaezxd the zlse of stzbfloor drains. f~ischar~e ~ozxsideratiozxs: if possible, all pet°izxxeter drains sixould discixarge to a suitable discarge location, Runoff ~~jater. Roof-z-uzxoff and stzrfa.ce-rttnofl'waier slxoz~id tzc~t discixarge into the perimeter draizx systezxx. Instead, these sources should discixarge into separate tigittlaaxe pipes aaxd be routed away from tine buiidixtg to a sto x drain or other appropriate locatiozx. Crradin~and ~appi~: l~ inai site grades shozzld slope d~awzx;ard a~a~F fronx the bzridi~ so tixat r~znoff xvater will flow y gravity to suitable collection poizats, ranter tixan ponding near the building. Ideally, the area surrounding the uildizxg would be capped with concrete, asphalt, car low-perrraeability {silty} soils to minizxzize or preclude suz-face-water infiltration. Asphalt av~nzt ce asiaaltic pavezxtezx#s will e used for tixe parking area, arid, possibly, drive rays, we offer the following eo .ants and recorrr.nxendations for pavement design and cons ct~on. ;pub ade Preparations .All sozi sugrades should be thorouglr.ly coznlaacted, then proof-rolled with a loaded d p c or heavy corrxpactor. ~' localised zones ofyiclding sazgrad disclosed during this proof-rolling operaticxn should be ovcr a~avated to a rna~izxxrn depth. of 1 inches and replaced with a suitable strzzctural X11 material. Pavement Materials: for tine base courseA we recozxt end using imported crushed rock. i~lative materials slxaii be adequate as a subbase. conventional ~sitait sections: ~. conerztiozxal pavenxezxt sea:tion _ ically comprises an asphalt corxcrete pavement over a rusixed rock base course. ~Tsin the cstirtxated desigrx values stated above, we recommend using the following c:.onventional pavezxtent sectiozxs: izxi ~a °fhac ass Pare ant cr~rrs akeizg Az°as ig 'I'a°af az~ci I~z•iveway ~1 z°~as Asphalt t~ozxcrete Pavezxzerzt '~ inches ~3 itxchcs ('ra~cl~e~i Dock ~2ac~* ~ irx~"lxe~ d~ int*l7ec granular ~'i.il subbase (ifzxeedecl.} l~ incites I~ ~'ozxxpactiozx and Observation. All subbase and. base course rrtaterial should be compacted to at least ~S percent ~, ~at~u~~}~ ~, 2t~~~ ~aRA, inc. ~ ~~.a~ t` `a e~s7-~ ~?ar~ta of the ~~odified Proctor nlaxiaxxtxm dr~% dez~ ity ~~15`.l`~`t ~_l ~~ ~ e), ar.~d alb asplxalt concrete shatzld be campacted to at Fast 92 percerxt of the I~.icc valrze ~,~.5`I'tvl ~-?~~l). ~~~`e rec~~naraaend that an 1~~IZt~ represerat~tive be retaixxed to observe t17e canapactiozr of eaclx c.our-se t~r:farre <zrx~, averlyizzg 9ayer~ is paced. 1~ar tPze subbase ~zrd pa~-erxxent course, can~pactian is best obser-ved b~f r2ze~zrs ~~~ #i-r:.~uerri dezasity testing. .l~ar tixe base carrr°se, rxrethodolagy observatioxxs and 4aand-prc~abirxg err; rxxore :~.ppr-apa-iate than derasit~~ t.estirrg. Sretrrrl dill `f'l3e ter€zx ''s . aural X11" refers to any placed rtnder farrndd?tioaxs, retainixxg ujalls, slab-on-grade floors, sidewalks, pavements, and other strexctxrres. C)ur coxnrnents, conc:lusians, and. recomzxrendations coxx.cer~ring structural fill ar°e presented in flee follot~ring paragraplxs. Fill iacexa•zent; Cleaxt seed., l~ranulitic gravel, cruslxed rack, soil. ai~~-tures, and recycled xnateriaLs should. be placed in horiztrntal lifts not exceeding inches in lease thickness, and each lift should e tharoxrghly cozrrpacted with a mechanical compactor_ Caxnpactian Criteria. Using flee l~adied Proctor test ~ 4'I`I~°I:I:s-155'0 as standard, xve recox end drat stnactaxral ~Z11 rased for varioras on-site applications be compacted to flee following minimum densities. hilt ~,pileatt?<on Pootixxg subgrade a.xxd bearing pad Pa lotion backfill Stab-arz-grade floor sugrade and subbasse Pavement Sugrade (rapper 2 feet Pavement Sugrade (below 2 feet 5 percent 9 percent 5 percerxt 5 percent 90 percent Snb~rade flbser•vation and Coxnrxaction Testirx~; Regardless of material or location, all strzactural ~r11 should be placed over fxrxn, rxnyieldz'ng subgrades prepared in accord.°~rxce witl;i tl~e 'zte Pr°e~aar^a~zcrn section of this repart. The a;andition of atl subgrades should be obserued by geoteclaxrical personnel before filling or cans coon begins. Elsa, X11 soil cornpact~on slxcruld e verified by paeans of in-place density tests performed during fzll piecCctucrat ~v alkdsi 3dcs~sic:j% cii sCrxl Cviic~r<iCue3i€ eivais Iiaa"v iie ~a%etee's xiciz izS ev~UCa v~vrii pa iitia~ssa.s. soil ~lois~zre Coz2sicier~fions~ ~~e szait~bilify o~~ soils zzsed for sfr~te~~~r~l ~i~l depeazds prizx~~ra~r on €~I~eir graiaz-size distribution ~zld moisture eoz~tent wl~ezz they ~zre ~:3~c.ecl. r~s tl~e "fines'" coz7tent ~tla~t sail #~-actioz3 p~ssizzg tlLe LT.S. l~TO, 2Q1~ sieve) iz~c.re~zses, nails ~Se~~azzz~ rzzore sezzstive fo sza~~ll clz~nges iu rnoistizz-e; cozztezzf. Soils containiztg more fharz_ ~boazt ~ percent ~z~es ~kzy u~eighf) e~zznot be consistently ccaznpacted to ~ tz~zaz, tzz~~~ieiding c=ondition ~vhez~ the zt~oisfuz-e contezzf is more flz~zz~ `? percentage points above or i~elow optin~unz. ~oz- ill placeznez~t dzzring suet-weather life ~~Tork, we re~;ozzzanezzd usiaag `'clea~~" fill., tivhieh refers to soils tlt~t Izave a fitaes eontent of 5 pea°eent or less (i?y weight} based oar the soil -action passing the ~i.S. No. 4 Sieve. ~. +.Ct.~_ ItF ~ A I~f~'ft?z~I-, T~-tTfCS Because tize future performance az~d izztegrity of file sts-uctural elements will depend l~rgety oz~ propez- site preparation, drainage, fill piaceznenf, and constz~azetiozz proeedaares, znoz~itoritzg and testi~zg by experienced geotecfulical personnel should be eonsidez-ed an integral pact of t4~e eozzstruction process. Consegez~tly; e recoznnzend that ~3 be z-etained to provide tine foiio~~Fiz€g post-report services: ~evie~v all constz~action p]aras aazd specdicatiozzs to verify t}~at our design eriteria presented in this report have been properly izategrated into tl~e design; prepare ~ Letter addressing reievaz~t review eoz ants (ifrequzred }~ the City ofYelanj; Check all eoznpleted saaiagrades for footings azad slab-on-grade floors before conerete is poured, iaz zarder to verify tixeir bearing ~~p~eif~ ; Yazd ~'reare ~ post-cozistx°uctiora lefter snz~axnarizing alI field oEssercFatzons, inspectioazs, azad test resui s (if recgatired by tl~e City of er), ,.i~r~<t~.~,~ ~, 20C? i O~U ~;~ ! Ye~rxx Derxiaf ~~"nfi~. ~~xt;. e ~p~xrreei~fe ~9xe ~~ ~xits~ tc~ ~ ~fs~r~Fiee c~rx axis ixs°~jcet. ff }f~x?x lxa~re ~~x3` gtxestitx~xs ~-e~ardi~~ t}xis repc~~~t car a~xy aspects cif tixe ~r€~je~:~ ~le,ase feel free icx cc~niact c~xxa- ~~f-fi~;e. ~izxcea-eiy, lax. ~ «sq a ,ms's ~„ f ~` ~ ~~ d ~~ ~f~ ~<. ,aat" T£cq~ ~ ~~-~-~~ Casey . ~,~x~ve, ~.I.`i`. ~taf~ ~ngixteer ~ /:T~~3 arxxes ~ I3ri~zazrx, P.E, ~~irxeiat xaizxeer Ext~losc~res. ~'i~zre i - Le~cticara ~~a i~txre ~ - ~zte ~x~a~crratic~rx Plcxra r~ttacrrrerat- Vest Pit Lags ~'~-I t~rr°cx~r Tt~-~, aS`~ex%~ ~z~t~~7srs i i ni ~~~ Massture t~antent ~°la} 5.1 ~l~ nave Size F~eraerat F'assir~ {~/o) 3.0 in. {75A 100.0 1.5 in, (37.5 78.5 314 ire. 10.0) 56.0 318 in. .5-rnrn) 36.6 lVCD_ 4 ~.~~-iTti71~ X0,1 O, 10 ~2,~.10-E7inl~ 1Q_~ Flo, 20 x.850-warn` 9.4 Via. 40 {.42J~'-ITlnl~ ~.'( IVa. 60 x.250-mm} 6.2 Ito. 100 x.150-rrar~a) 5,5 a. 200 {.075-rra 5.2 ~.~ F'I X10 1.35 C}30 4.74 X160 21.42 «:c (1.78 15.92 F'erent ~y Sipe Fraatior~ eight Gaarse Gravel 44.0 1°ine Gravel 25.0 Saars~ Sand 19.5 ~$et~iUfTi anCl ~.~ ~4ne Sand 2.5 Fines 5.2 dotal 100.0 t1J i 8.P d...Pc2~.StT7Ce~RIi0t1 ro~a IV~e E3ra~~n pearl}f graded gravel with silt and sand Sratbot (GI~PGNf) ICS ~~a Gi~ss~~ication ~~~ S~,e~~ ca ~ ~ ~ - c~ ~ c a _~ a~ a ~s s~ try ~r cv~ a~ ~ pia ~. ~ ~' cri ~ 0 c~ ,-- 0 0 0 ~- CItSE ~tdr~.t2~ SCE ATEI~ P. i~~ t~ F'a'd ~' ~'LdT' SQt~d~ B.~ ~ I2~ ~~ -~ f / t ERE?S~ `~ ,~. tfi a `, A yg b i .J : ° CENT r ',^ 5 ~ Z 3 1 ~ 5 ,. ~. ~~ ~i .c-4 , 13 -~4 F°~tt , 2992 v ~. ~ ~~AT y,A 1 .~ f t d AQ t c f 2 S ~ I ~ ~ ~ T~ o ~, jE F ~ ~ i3 - 3'S YAK \ ~ g ~ f ~' ~ J s3 7 ~ ~ ql ,. S!osn~SHEQ Calculaiio'~s Jc?b No.fPrajec;f: #?fi2~#~ ro~Aay's Q~nia3 tc~r T' ca~r~ 1~0 yr Match ~: 0.1595 cfs Freak ~~t C~. 0. ~ 595 cfs Peak tga 103,27 ft active del; 1094,47 cf r~atch ~; . ~ ~ cfs teak Cat : 0.1595 cfs leak tg: ~~~, ft active ~Jcal: 1 ~ ~.~~ cf r j~;ct re~i ~2 yr] 2.70 in [10 yr~ 5,30 in ~ rraca] 1.73 in ro r~ 1 ~r t - r} Berea; 0.5370 ac Fiyd int: 10.00 min €'ak F(€~ 0,1595 cfs leak Tirrae: 6.$3 hrs l~ poi: 0.1969 acft r~ r~ I g r t- r Areae 0.5370 ac Fiy Int: 10.00 min Weak Flaw: 0.1595 cfs Peak Time: 7.67 hrs I`iyd Vsal: 0.0384 acfk r~i a e rasa Iwal its - r Qaf~: 03/ 141~?8 i*#yd etcad: >l1F~i t-iyd Lass rvietc~d: IV~smer i~eak Factear; 484.00 a a Alps: 0,20 term [3sar: 24.00 rs lntve 10.00 resin urea ~ T F'ervic~r~s 0,1850 ac 80.00 0,08 tars Impervic#us 0.3520 a 98,00 0.(38 tars Tatal 0.5370 ac ~rppc~rting eta. lie is etas Landscaping 80.00 0.1850 ac 1 pervious etas i~avement and ide~nralks 98.00 0.2250 ac r~ilding taof 98,00 0,1270 ac e ious T step Flcstn~ type: C3escripfion: Length. Icape: eaeff: Travel Time ~~x~c9 Assume 5 rein f~,~a~ ft d?,4~C3% ~.QQ~ ,~?~ 671411 ~ pe IOII ~ att. Flclvr type; r0escriptiQn: Length: i~lpe: ~,c6eff: Travel Time \S#ardioslGiuiilo60o0l06212-Todcxys_Den#al\Desi~nlSiorn~\Calcs\finai CalculalionslFinal Sicrm C~rainac~e Calculalions.dr~c 1 f3 Sfit?rmSNCQ Calc~ufatiLns JoL? No.fPr•~ject: U~242 Today's L~zr~fal Dale: 03/1~fQ8 By:iJ ~-~~ed A~st~~e ~ ~-i3rt o.o o.oo°a, 5.0000 ~.OO [~ ~~sira![3 Peak ~ (peak ~ Peak ~.`c~l Ares ethad F~~i~~type verot _____-- (~~s) (hrs} {ate-ft~ ac /Lass ~rotai Site {~~-hour c~~ a,14 ~,aa a.a~a~ a.~~ Ssut~rscs Tl`F'E1A a ~~ Tate! Site (24-hear GfV) a.2S a.aa a.a$ss a,54 SE3t1N1SCS TYPEIR 2 yr ~ Totai Site {24-hour G} x.57 s.aa x.1972 a.~~ SSt9N/SCS TYPEiFa iaa ~f?!` Mart ~; 100.00E?0 $t fax ~!: 10.0000 ft ~C3rltflb a~lrt; Gt~titCSb hiyd: taC~e l61~3tt~ t?ll9Ct'le ~/OlilCtie 100.00 0.00 c~ 0.00 ~~ x.0000 act ~ 00.50 $.QQ cf $6.00 c~ 0.00 act 101.00 17.00 a~ 1 X2.00 cf 0.0030 ac~k 101.50 x€13.00 ~~ 13.O ~~ O,Q05 acct 102.00 6 1, 00 ~~ ~i1.00 c~ O.O 1 A 7 ac 102.50 350.00 f X50,00 of 0,0195 act 103.00 ~ 030.00 cf ~ 030.00 cf 0,0236 acct ~ 03.50 1 ~ 50,00 ct 1150.00 of 0.0264 actt 1t~A,OQ '6236.00 cP 1~a.00 cf 0.£20 acct trsrae rca~ie y 17 tcarrr~T'ech chambers with inches oaf strsr~e base grad inches of stare scar tee-aor~ ~°lsl r rice car ~'eh 2ge cal ~~! stage ~ca6 ~c~9 {tt~ {cf} lac-eta (tt) $at} {ac-ft) iaa.aa a.aa a.aaaa ia2:2a ~2~t.sa a.ai~s iaa.ia 1~.2a a,aaa~ ia2.~a ~asa4a a.a1~s 1aa.20 34.4a a.aaa~ ia.4a $48.2a a.a186 1aa,30 51.~a a.aa12 1a2,5a a.aa x.0195 iaa.a ~&,80 a.(}a16 ia2.6a aas.aa a.a2a3 iaa.5a £36,£39 a.aQ2o iQ2,70 922.x0 a.CD212 iaa,6a ia3,2a a.aa24 102.80 958.aa a,a22a 1aa,7a 12a.4a a.a028 ia2.9a 994.aa a.a22$ iaa.8a 137.6a a,aa32 ia3.aa ia3a.aa a.a236 1aa.aa 154.8a a.aa36 1a3.1a 1a5~t.aa a.a242 1a1.a0 172.aa a.Qas9 ia3.2a 1a78.aa a.a24~7 101.ia 22a.2a a.aa51 1a3.3a 11a.aa a.a253 ia1.2a 268.4a a,aa62 ia3.4a 1126.Oa a.a258 ia1.3a 3'16.6fl a.aa73 1x3.50 115a,aa a.a264 ia1,4a 364.8a a.aa84 ia3.6a 1167,2a a.a268 1ai.aa 413.aa a.aa95 ia3,7a 11Ef4.4a a.a272 ia1.6a 458,6a a,aia5 1a3.8a 12a1.6a a.a276 ia1,7a 5x4,20 a.a116 1a3.Q 1218,Ha a,a28a iai.$a 549.$a x.012& 1a4.aa 1236.aa a.a284 iai_90 595.4a a.fl13'T ia2.aa f41.aa a.a147 ia2.ia 682.80 a,a157 X:~StudieslCivii'~064Q0\0~~42-T~dcays_Denfal ;Desi~n~Sfoan\Cales\Final Caleul~fiiansl,Finca3 SE~.am Draineac~e Ccaletalations.doc 2f3 Sfarn~Sl-!EC Calculations Jaffa No,f°rnieLt: 4F,242 Taday's L~enta! Gate: 03I141t~}3 __ C1rCP rU$Ctr ~ C C'~tt t 1 s`Ir flll ~U C3escripe i~~l~tipls C~rifi4e tart EI tax f ir~cr~r17e93t 100.Q(}0 ft 14.flQOQ ~t Q~`6 A~rc3iat~ r~l~l~ fi~3tr~l~t: . ~ 7 ft2 ~1 irlBl~r . 3 ire °7 t~rfc ~ 7 ~ = , ~ i~ ~s tge® ~~re °rt~l~ far esr~resl: h~f r 4~ttc~ ~t~e t~i~chre tie C~i~~arg~ f) ~cfs} ~~ (4;fs} 144,4a 4,1595 1Q2.30 ti.1595 144.14 4.3595 3432.24 ~.~~~~ 1443.24 ~.~~~~ 102,34 4.7595 140.343 41.3595 142.44 ~.~~~~ 14)0.40 43.'1595 142.50 0.1595 144.50 Q.1595 1 Q2.54 4?.1595 144.60 43.1595 142.74 0.1595 '! 40.70 4.1595 '~ 02.30. 4.1595 X44.84 0.1595 14)2,94 4.1595 144.90 43.7595 343.44 4.1595 101.410 0.3 595 103.14 ().1595 141.14 4.15x5 143.24 a,15s5 101,20 4.7 595 1633.34 0,1595 141,34 4.'1595 143.44 43.1595 '641.44 4.1595 1Q3,54 4.1595 34'1.54 t}.1595 103.6x4 4.1 x95 1431,64 Q.155 143,74 4.1595 '141.74 0.1595 14)3.30 43.1595 101.34 0.1595 343.94 4.1595 '141.94 4.1595 3434.40 4."9595 142.44 4.1595 :~S9~edios\Ciuil\06x`?OQ\Ob~42-Tadays_ivenfap\~°~~signlSform\~clcsiFinaB Calcisla#iansi,Fpnd Storm DrQtncc~~ Cale4.t!ataans.doc 313 system (ln} Chamber {fit") Sterage (fital Stange (fits) Vo9sat~e (fi#`) 48 #? 0.85 72.73 1236 47 Q 6.85 71.89 1222 46 0 0.85 71.04 1298 45 0 0.85 74.20 1193 44 0 4).85 69.35 1'179 43 0 4.85 68.51 1 `965 42 43.05 0,88 67.66 115Q 41 0.16 0.96 66.78 1135 40 43.28 1.04 65.82 1119 39 0.60 1.27 64.77 1101 38 0.8(} 1.41 63,51 1Q8Q 37 0.95 3.51 62.14 1056 36 1.07 1.60 60,59 1034 35 °[.18 1.67 58.99 1003 34 "6.27 1.73 %7.32 974 33 1.36 1.79 51,59 945 32 1.45 `1.86 53,80 9`95 31 'i.52 1.91 51.93 8$3 30 1,58 1.95 543.(32 8509 29 1.64 1.99 48.47 817 28 1.74? 2.433 46.0? 783 27 1.75 2.Q7 44.434 T49 26 1.80 2.11 41.97 713 25 1,$5 2.1A 39.86 678 24 1.89 2.17 37.72 641 23 1.93 2.20 35,55 604 22 1.97 2.23 33.35 54'x7 21 2.01 2.25 31.12 529 2C3 2A4 " 2.28 28,87 491 19 2.47 2.341 26.59 452 18 '2,14 2.32 24,29 413 17 2.13 2.34 21.97 374 16 2.15 2.35 19.64 334 15 2.18 2.37 17.28 294 14 2,2Q 2.38 14,92 2!'i¢ 13 2.21 2.39 12.53 213 12 0 (b.85 '~ 0,14 '172 11 Q 43,85 9.3Q 158 10 43 09.85 8.45 144 9 Q 4.85 7,61 1,29 8 0 4.85 6.76 115 7 43 13,85 5.92 101 6 4 0,85 5.47 $6 5 4l 43.85 4.23 72 4 Q C9.f35 3.38 57 3 0.85 2.54 43 2 4 4.85 1,69 29 3 4 4.85 0.85 14 (~.I3 Ta2ai Chamber Stange = 45.9 f#'' Calculatians are based u~an a i 2 is2ch stave base under fhe charssbers StormSHED Calc~rlatiot~s .fok~ ~fo.tFrojeet: 4242 Tayay's Dente! Q~fie: r~5f2?12QQ8 ~.. ~.. i~nnin~ Pipe ~lctal~tor liven Input l~~t~R Shape .................m.,..,,.,, irclr Solving for .. ® .. . .... . ...... . ... Depth of Floes Dig star .o.,,,,,,®R.,.,.,m.....4 ,667 ft F~lov~rt ........................ 0.5700 Slope .......................a,,. 0.0100 ft~ft annin°s n ,..a...,.,..,.®,.,.®, 0,0130 Co pt~te [Zes~altsa depth ,a ......................... 0,3222 ft Ares „®,,.,,.W .................. 0.3491 ft2 ettd A,re 4,,,,,,,,,,,,,,,4,®. . 0.171 ft2 etted Perimeter .,,.....,.a.. .,, 1,0249 ft erirr~eter .............4„4.,..,. 2.0945 ft velocity .,,.®,...,..,,,e,,...... 3.4114 f ydralic adios ®....a.a....,.. . 0.1E'«30 ft Percent Fall ,s,,,..,a,,,.a,,,,., 4 .320 l ~W__~_> Pipe is only 59.2% fall d~rin 1 -year, 24-hour design event Full ftov~ fort .®.,.,,...,.~ . 1.206 cfs _~~~.__, Pipe capacity exceeds 100-year, 244our design event maximum flov~rate ( , 57 cfs} Full flow velocity ,,,,W.e4.,a.., ®4620 fps ~.ritical ~nfor anon ritica e t ...............®„ 0,3545 ft ritic~.! slope .................. ..0072 ftfft critical velocity ,.,,.,,.®,..... 3.0214 fps critical area .®®.....,.,..,m..,, .1 7 ft2 critical peri star ®®,.,,,...,,., 1. X96 ft critical ydraulic adios . , . , , . . .1731 ft critical top v~idth .,,....,.,.4„ .667 ft Specific enemy ..®,.,,®,,,..,.., 0.5030 ft ini enemy ...®,,..,..,.,6 .,, .531 f ~roude nu bar ................. .. 1,2 10 to~v condition .a.,e.,,.,.,®..., , Supercritical K:\Studios\CaviR\O60r_,0\t3b2=€2-iociays_Dental\Desi~n\Str?rn~\Ca9cs\Final LalcuBations\Conveyance Calc~!la#ions.doc t/i ,~ ~. S*arn~SHED Calculatic~lls Jab Na./Praject. ~t624E T~det~~'s D~n!ai Date: a5t2'fQ~ L~y:LDJ f~lethad Rair~type Event /Lass SBUN~SCS TYPE~1~ 6 ma ~iyd t~tethad. SO~DFi llyd Lass l~ethad: SAS CI~J 6sf~aralber Peak Factar: 44.00 SCS ~bs: 0.20 Starm l~a~r. 24.00 hrs Into: 1000 rain area ~Id T Pervia~s 0,150 ac 80,00 0.0 hrs ira~perviaas 0.2250 ac 9,00 040 hrs Total 0.4100 ac sacartira C3ata: ervi~~as Data: Landscaping 80.00 0,1850 a~ Ir~er~visaus t~ [?ata: Pavement and Sidewalks 98.00 0.2250 ac ervi~as T~ ata: Flaw tpee escriptiana Lengthen lcae: oeff: Travel Time Fred Assume 5 min Q.00 ft O.Or 5.0000 5<00 min Innper~ius T" 13atam Flaw type: l~escriptian: Length. lape; aeff; Travel Time Fixed Ass€~me 5 miry 0,00 ft 0.00 540000 5.00 ~>'aia .~~, p~a~ = 0.11 ifs tls '" tall arries with awre 22.5 ~'t~a 44.9 ------- ~~~~~f~~~~ = Q.~ ].ifs ~ ``'" = 2.ZQ s Star altrC) ~rtri ges `:\Studios\Civil\~J6t~Cp\C1o242-Tadays_Dev~iral\Desic7nlStarm\CalcsR~inai Caicuiafions ~Fina! ~v`c~8~r C~e.ea9efy C a!ce~Eadians.c3oc t / 1 1~ ~ /~ c~~ ;~'°~' ~~ TCt ,4,TR ~. T! IP1, t'rre y ~'trrtsfta 7°crtt~eac~ part a ?, 2(18 ' W i' Yelm, ~!A Infer aican pr4+ridd® Tote! contributing area ~ 0.43 acre lr~9pervious area = 0.225 acre 1Nater quality flow, ~q -= 03,11 cfs l~reSiding agency =City of ~'e!m ss pticsns: edia ~ F' cartridges C3rop required frorr~ inlet to outlet = 3.035' minimum ize and coast esti aces: The StorrraFilter is a flow-based System, and therefore, is Sued y lculatin the peak water quality flaw rate associated with the design storm. The water quality flaw rate was Iculated y using SOU and provided to CC TC~-! Sto water Solutions lnc. The Sforrr~Filter for this site was Sized based on a water quality flaw rate of 0,11 cfS. To accommodate this flaw rate, C(~ TFC Stormwater Solutions recommends using a 3" anhole Storrr~Fllter with 3 cartridges (see attached detail). The estimated cost of this system is complete and delivered to the job Site. This estimate assumes that the vault is feet deep. The fine! syster~n st will depend on the actual depth of the units and whether extras like doors rather than stings are specified, The contractor is responsible for setting the StormFllter and al! externs! plumbing. Typi 1!y the precast Sto Filters have interne! bypass pacifies of 1.f3 cfs. if the peak discharge off the site iS expected to exceed this refs, we recor~lmend placing aig-f4ow bypass upstream of the StormF!lter System. C(~ TFC Stormwater Solutions could provide our high-flow bypass, the Sto Gate, which provides a urination weir-orifice ntrol Structure to limit the flow to the StormF'ilter. The estimated cost of this Structure is 4,00, The final st would depend on the actual depth and Size of the unit. 02006 cg?NTEGN Storwater Solutions 92421-8 ~E Airport Vtfa±~, Portland C?R 37220 B'age 9 of 2 contechstarr~av~ater,com doll-free: 800.5A8.4667 Fax: $00.569,1271 TS-P027 aintenance lean introductiof roec escrption The site stormwater anaemnt facility consists of ~ storm drain conveyance system The property owner wilt be responsible for n~ai tenance of the storm drainage system. The Operations and aintenance anual must e kept on site, The attached c ecklists indicate aitenance actions that ust be erfor ed in order to keep the system functioning property. ai tens. ce Sc e ie The details maintenance schedule is shown in Attac nt `°A" of this plan. It should e closely followed to keep the system functioning properlya Additional maintenance may e required as a response to unusual stor events. eta ate cat The estimated annual cost for maintaining the conveyance system is shown below. It tnudes costs associated with debris re ova[, pipe ceanin, and Batch basin leantn The costs are st ply and sett te4 They should e revised after construction is co plete® aintairair~ ~eetation P~rsonr~~t 25lhour for 30 hears $750 Pipe and cafich basin cteanin Personnel and vacuum firuck C X600 100f hour for 6 hours leanin torrritechCw systerii Personnel and vacuurri truck X300 100lhour for 3 hours c~ean9ng/€2e~tacis~~ Storfilterc~ $2o5lcartrici~ for 3 ~artriel~es $615 cartridges 52..265 ~~~ (I,r~ TCt ~I,~TEF$ -~'C~I-Tlt~ lr,~. ~r~ep~r~~/ ~ Grastina Tca#I~nca~ can ay f, 2tt4? a --• `~ P 4~e16T~, ts~JA Inrar anon rviea: Taal contributing area - 0. acre lrt~pervious area = 8.225 acre Water quality flow, ~~q = 0.1 ~ cfs Presiding agency = ify of Yelr~ The ~tormilter for this site was sized based on a water quality flow rate of 0.11 cfs. To accommodate this flow rate, t~TE~ tormwater solutions recommends using a 484, anhole tormilter with cartridges see attached detail). The estimated cast of this system is compBete and delivered to the fob site. This estimate assumes that the vault is 6 feet deep. The final system cost will depend on the actual depth of the units and whether extras like doors rather than castings are specifiied. The contractor is responsible for setting the tormFilter and ail external plumbing. Typically the precast ~torrrailters have internal bypass .pacifies ref 1. cfs. if the peak discharge off the site is expected to exceed this rate, we recommend placing aih-flow bypass upstream of the tormFiiter system. GQf~TEI-I tormwater ~olufions uld provide our high-flow bypass, fh ;~torrnGate, which provides a combination weir-orifice control structure to limit the flow to the formilter. The estimated cost of this structure is X4,000. The final cost would depend on the actual depth and size of the unit. 02006 CC?~lTECN stormwater Sc~lcstions 1202 i-B ICE Airport Vtaay, Portland OtP J7220 Page 1 of 2 conteohstorm4vater.com TolB-free:80C1.548.~66? Eax:800.561.9271 TS-P027 d~t4.a et Sd $ PF Isecior~ Period: air~~a ra r yet Number o Sheets Attached: date Inspected. Name of Inspector; InspctorFs Signature. instructions for se of aintena ce ek(ists ~ ontly fror~a i~ovmber through April {2} nc in late summer (preferably Septa er $ After any mayor storm (use -inch in hours as idetine aka photocopies of these pees and check off the prole s you looked fear each time you made an inspection. Add comr~raents reardin pro .lams found and actions taken. Keep these "checked" sheets in your files because they ill be used to write your annual report. . 2 ~- Infittrat~o yy~y,~q ~q 4 Rk#CS5~.fl3 ~' L:.a"i ~ 3 F.,# ~0.V'#F~.~ ~~ "~,~ ~~4~~le p+d,y~ .may eS ~~-yyy ayyy~ #'~i.3~~ Sa R~ 3Bi ~` ~'~~ yy~¢pg gp [`'y~ ~*} , ;Tw'yiT~~ ~ iMY~~ ism "~Y A~~ ~ py~ ¢'~"\~\'Ny~ Fd~li ' ~ ~,y $R ~,''.8 yv ~~. nf~ ~ S~`~`~2$~i'YY '~~ 's"i ~4`^`,~„ `~'?~",t~t '. b ~ ~~ ~ ~~'~"'~'`~ 2&' ~ ~~~.~ s^~ 1A -i \~.,\~ ~vtvU t ~a`~5:.. -z; }%~•2.~,j;P ,ar A~,~,'f;~.*~"v b 3 ,.';r ~S ^"¢'~"~' .. ~ ; C ~,,,~.}y' ~ 'r~~3S~ ,~,~~„3C?.. .. ~~+G.~.O~i~ c S ~,4 ~ , ~ 1 ~~~~'^~~~,€. ~i ~ Y ~ C''C~r. r ~ ?' 4~~~~~y`S ~ ~ . ~... ~'~K~ ,~Ax ~~2a ~ ~ . ('~`• }.~-~b* ? Y ~ 'Y' ~+~r"~~# f~. ~' ~k a, \~~~ ~' .~. ~.~ "'i a"~ 1 ~a k ea )\' 3"r, "' e '~a+ ~eY yR ~ L.; 4~ S i3~~d~ ~ ~ ~?3 ~ ,~ ~ . 3~ ` , .~~.2~s~...K ~.,~..:.. ~~, z ~ .1-> ~ i ,.-Y:Ga ~ ~ .,..ibzs;f, s~.n . ' y..;. ~. „ teL ~~ co. _, ,.@~ °`o-~~ "L~'...„-:::~ ~" .,d.. .tir. ~°i';.... .~1.... ' \ . ,~3, \4+u ,,Ja^ _..1`.:-0 ~ general l"rash & debris see "retention Fonds°' (1~0. 1~. See "retention Ponds" ! PolSOnoU oXioU~ ~ "'l~et~tltlon bonds" (lvo. '~~, ~:~''"l~et~ntlOtl Ponds°' l ` ec~etatton - ( ~IQ. " i ) . ^^ +s t .,.5 ssontam~nant~ and Cg^~. t~ F~,gg .3 +Jee "r~it~.ntgon Ponds" (iVo. !~, C~ g '^ ~ +3ePs "9-,7~ntE'r~t'Qrt Pl7nd,~. as P of i ~stion ( ~lo. ~ ) . ~~ yy „„ gg Lt [loLdent F T~i~~ C+ t~ „p ~e q a7~".Q~ "R3~t~nt~{an P~r~tB »~" (AYQ. 6~. e g- y t^5 a]~ "Lt~t~r~tl(~[7 t-{~nd~e§ (No. 1 } Storage area Sedrment lNater ponding to infiltration pond after Sed~men# ~s removed rainfall saes and appropriate tune and/or facility is leaned slits d for infiltration. so that infiltration system rks a riling to (A p lat,on test pit or test of fatality design. indi es facility is caniy rkin at 0% of its designed pailities. if inches or more sediment is present, remove. Filter Sags (if Fined with Sediment and debris t`iif bag more than 1/2 Filter bag is replaced or apli le) Sediment and full, system is redesigned. i~ebris P k Filters Sediment and Sy visual ins ion, little or no ter flo Caravel in rock filter is Debris through filter during heavy rain storms. replaced. Side Slopes f Frosion See "'L~teraon Ponds"' (too. 1~. See'`Gttention P ds°' Pond (o. 1), rr-ergency Tree Cara see ""C~tent'on Ponds" (hlo, 1 ~. See '"Detent'on Ponds" C~ver~ sp,ll y (~. ~~. and E3e s Doer . feet in height. (~ Ps~ng ~~''ee ~~^^gg ppgg .q a„IIee "LF~rtent~on Ponds" (WYo. W~, ~a ( Ll~rtent~~~ P ("~sy18 e 7 dl g ~, g rrtergency P k ~ss~ng s "retention Ponds®" (hlo. }, See'"L~etent~on PVndsld C)verflovv SpAii y (too. 1. ros~on See "'C)etentCOn Ponds®®(l~lA. ~t ~, ~' "'®etentlon Ponds" (rlo. ~~, Pre-settling Facility or mp `® r designed s imer~t trap depth of Sediment is remaved. Ponds and l~autts filled ' h Sediment sedimdnt. and/or debris ~` sty olctcn - trof~ Tr~ftrxe MF's -3 G, ~~~~ r ~zlcrrr~ 1/ ~- ~?r~c~ff °~ trra~rat ~3 P~ brur~ O ru 2t?4 ~l~rr~ -~ T' anarr /' 7 ~a. 1 ~ f~ltrr Iaf Qt tlr ~ yL•~"t3 ~C'~:.yyyy wSy, ~ e ~ ~,~2a be'*~ 5-; .~~'d 4~~Z - aq,.r&,~ ~ '..~ ~A,g :~ga~.,~py~sy ! ~' #£v# "cs ~-' ,. S ~ ': ~g.~1t~~ ~`'~s,,~,~Sl i.."~gX ~,$ ~ ~,- } z~::. ;~iRR~~iR{(~~~ ~ ,y~,„1"'Ft~j "4~~`"''~~S 'y~~p ~V~~rvG~&8$[`*f3Q +~i~Y'. '`"~ ~.sY^w~E°~~~nk~SF C1''.'~ "~. ~~~~ ~"k~ t ~?.'ak'''_~':;~ 3~`''Sk S, k ~~ \ ~ '~.'%~.yot ~t 3~"vr` i+S~'a~ E:t ` ~ ~~'h ~ v~{Zq. # k` ~ ~'"''~ ~ ~"~`~S ~ \Z. k :.a2~ vv T? $.~Yiaaivkl~ ~'9a`" ~ k ~ ° '" ` '` ~ ..r g ~yk ~` ,,,, 9 F ~( ~~^., S Y '3. @ Z .r~'' '[ .~} v~~`w ~ ~ A 3 ,s- ~n;\~~„ '~~~Ri ~ ' § ' ~k~ ~`Li~~' ~k ~ ~§'~'C~ ",~~4 ~` 4. ~ ' ~~.~Jf '"~2 .n ~~II . ~~'~^'T ck a ~@' ~~ ~ " ` ~ ~ f ' ~ a t ~. Tr, . ~ , r ~ , 4a, ,...m ... ..s:~, t . ,.. ~'-,.a.sx.~ '~'i~ . sa@~a u~ >.,. ~ ~.-~.,,. ~^ z .,,~ u.:' : ., .. k .. .. .'. Belowr Ground Sed[ment Sediment depth exceeds Q.2 a-inches. loo sediment deposits which Vault Accumulation on would impede permeability of Media. the compost media. Sediment Sediment depth exceeds -inches in fret [1lo sedimen# deposits in vault Accumulation in chamber. bo#tom of f rs# chamber. Vaul# Trashti~ebris Trash and debris aecurnulated on gash and debris removed from Accumulation mpost filter bed. the compos# filter bed. Sediment in en drain pipes, clean nuts, eorrme Sediment and debris removed. gain full °th sediment and/or debris. Pipes/Clen- Cuts Damaged Pi s Any part of the pipes that are crushed or Fipe repaired and/or replaced. damaged due to rrosion and/or sttirent. A ss Cover Cover nnot be openeda one person Cover repaired to proper [damage of nnot open the ver using n al rk[ng sp 'fications or rkin li[n pressure, rrosiontdeformation of replaced. ver. Vault Structure Cracks wider than 1f-inch or vid Vault reply or repairs made l odes. Cracks of soi( particles er~tenn the afro re that vault m is design ~n all, Bottom, through the ctcs, or pefi ions and [s st orally C?aage to rnaintena ~nsp on personnel sound. game and/or date one that the vault as riot afro rally Top Slab sound. Cracks wider than 1-inch a# the joint of Vault repaired so that no cracks any ilet/utlet pipe or eviden of soil exist on~der than 1d4-inch at the particles entering th gh the cracks, joint of the in[et(out[et pipe. Baffles B s ing, cry 'n rping, Baffles repaired or replaced to and/or showing signs of failure as specificatirans. date fined by alrrtenanefinspection person. A ass Ladder Ladder is eroded or deteriorated, t Ladderreplaeed or repaired and f~maed functioning property, not rely meetssp 'cations, and is attached to structure [l, rr~issing nanss safe to use as determined by cks, and i [[n , lnsp 'on personae[, Below Ground Compost edia C?ra o of ter through the media ed[a rtridges replaced. Cartridge Type takes longer than hour, and/ear ' erflow o rs frequently. Short Cir icing Flo do not properly enter filter Filter cartridges replaced. r[dges. ~~,~,:. ~~ ,F ~fa~a ,~0 lfolrrre - f~tr T'r°aafraarrt Ps 7 ttac ent ~~ q~ cell tip o rc onteol ro ra ~'he most important practice is to ensure that no hazardous v~astes~ such as oil, sha!! e du ped into the storm drainage syste ur~np o asteF' sha!! e stenciled near each catch basin. The relevant pollution contra! section fro the rr~anual is included as part of this attach ent and is an intern! part of the plan® ~ ~o~ escription of ollt~t~nt ~uz•ees: L~zzdscapin~ caz~ iz~cizzde grading, snail ~.ands~~aper~ tr~zasfer, ve~et~tion z°~za~ov~l, ~~ti~id~ ~z~~ ~'~rtiiizer ap~~licatiozzs, ~z~~l aid LaV~rt! wateriza~, ~tortaz~vatc,r cozit~a~xaiaa~zats izaciude toxic or~azzic coztzpozzzzds< ~ et~ti~ heavy metals, oils, tot~i suspended s~alzds, coliforziz bacteria, fertilizers, azzd ~tl~r~ager~a~r~~ pesticides. c~ ~utarat o~trl A prose a +Gontroi of fertilizer and. pesticide applications, soil erasion, and site debris to prevent contazt ` atiozz of stor water, lies l eaionl s feet sapin~: install ez~ineered soilJlandscpe cyst s to i ..prove tine ixifiltratiozi and rz~latioz~ of sto water ° landscaped areas. o not C11sp~aSe o collected vetatzort zt~t Wate ay'S or Sto drainage sstel~sm eco en e A ditcznal era 'onal s for Lacicapin. ondz~ct zriza113Aznoizz ivezever practicable ispose of brass clipp` sR leaves; sticl~s, or tzthr collected vegetation, by co2osti~> if feasible. Fot~rcrary (~ 6f€afurrt ! _ ca~orco tatafr'ol Ps 223 i;a le ~ac~atic~n~ fc~~° Use cif Pesticides; evel~a and in~et~aent an ~~' (~ e~t~e~n pan Mat end cif? ) and use iastilds o~~ly ~ ~ last resort. -.4 1~~at~rrrt !~` - gar car~ttz~f P ~rry 25 ~'leata a a~i~r slailled lacst€cicles a~ad ezasure that the laesti.cie cantazaainated waste materials are kept izz designated ca~Fered and captained areas. The pesticide alalicatiat~ euitanaept zzaust lae capable of iznaedite shutaff ha the event of a~z epaerepcY, a pat spray pesticides within 1 feet of apep waters includita wetlapds~ azads, azzd streapas, slaulas ar~d easy drainage ditch ar cha el that leads to apen wate~° except ~vlzezz apprave by EcatogY r ,the heal jtzrisictiarz. ill sensitive areas izxcluding wells, creeks and wetlands must lee flagged prier to spraYizag. 1~.s required by the lacal gaverr~zazent ar by alagy~ anaplete public ec m ~ ~ti~anal ~aeratioiial s fc~r t e e-se of pesticides: ansider alts tives to the use afpestiides such as cavring car rvesf weeds, substitute vegetative gra h, and an 1 weed central/ ass reznaval. ansidr the use of sail aaa~ennients~ such as ca past, fleet are a to central sa e a an diseases in plaints, such a Yti rest rat, as r ste light, azad parasitic nez~zatades. the falawing are t ee ~aassihle echanis s far disease central by canalaast ~dditian ('I:TI~A I?uhlicatian ~ap_-044; 1. ucess 1 canaetitzazl far nutrients b~f ntibiatic pradtzctian; success l redatian agag st Iaatagens by enefzial "craarganiszrz~ and ~ctivatian of disease-resistant genes ip plants by caznasts. tzslln atz aecl~~l sc~il~lcxc~°a ~s~eriz Sara ~r°eri~~ hvth the plant February tit? 4~calurn !~' _ c2cr~ Gann Fps ,~- lic~at rations for ~,iou anagexne~t; -2' turrr~ IV ~- c~crre c~nfreaf ~'s ~Fobrur~ 2t? adverse efl;eets tc~ tie 1~c~st ~~Ia~1t ~r t~ h~~p~~aa~s. E~~~c~ophvtae gasses are ec~m~aaereza~i~ avaik~tt~le a~i~ cats lie ~sec~ ~~ areas stze~ as parks ~~ g~If e~~z°ses ~vv~~ere ~ra~~r~~ does z~~t ace ~r. ~'1ze Doea1 ~'~~pe~-atwe ~~te~~sac~tl ~~'fee ear ~f~er ac~viee c~x~ ~=~acla tapes c~~~rass are ~aest suited tea t~~ae area a~ac~ s~z t~~pe, I~°itic~r~: ~r`ury 11 ilQlraa f §f - ~ar~ carrtrc~l E~ ~'~ -7 step ~ralate and record the eff'ectivness of the control and modify r~intnc practices to siaiaort r landscape recdvey and prevent cdrrencm por an elacaration of these steps refer to radix -~', ~.'~ -, ~/lcrcrz !- c~ ~nfrof ~' Fe~brry 0Q5 ~. pliaL~le eao se aintain stortnwater treat ent facilities accordirxg to the t~ 8~ procedures reserxtd ~a section Q of Volunxe ia~ addition to the following s: w regularly rnxo~ debris d sludge fro s used. for peak-rate control, treat ent, etc. azxd discharge to a sanitary sewer if approved by the sewer au ority, o truck to a local or state govex~xzent approved disposal szte® do streanx control devices s part of a. syste approach. `~ -4C? itofu~ t'4~ - ~ca~rroo ~orrtrc~f ~1trtF~~ Feti~taty 0(~~ ~~brcr~ar~ X10 ifr~lrerrre l t~ ~- Source C;rantrcaF ~lVIP ~-~1 ®=48 !/i~rra~s I .. Maur Gc~ratr~~ f' February .~Oa5 a~llua ~~~rl ~~a~4 ~lzzat~ the pc~t~tt~ial sca~~rces o s~rmvvat~r +~ll~~t~z~~s ~~a ~~ay sQ~~~ ~~~~~°c~l s ~~~re ~`easzl~l~e ~:. . F~rcrry 1/calc~rr~~ f ~P - e~errc car~f l ~' ~ 1 can to i1~rQ ar~ar~ r~t~a9 ,.: ~ ` °°~' ~. a_ i i~ i li Tl~e primary purpose of the Storms~~ater Management StormFilter`~' is to filter out and prevent pollutants fr€~r~~ entering our '~~rater~vays. Like any effective filtration system, per iodicaily these ~ollutar~ts must be removed to restore the StormFilter to its full efficie!~cv and effectiveness. t~tlaintenance requirements and frequency are dependent on the pollr~tant load characteristics of each site. Maintenance ac_tivitit=s nay be required in the event of a c'r~emical spill or due to excessive sediment loading from site erosion or extreme storms. l is a good practice to inspect tl~e system after rr~ajor storm events. cal 1"flC~' lid' Although there are likely many effective maintenance options, rife believe the following procedure is efficient and can be implemented using common equipment and existing maintenance protocols. A two step procedure is recossamended as follows: s ~efii ai t a i ~ At least one scheduled inspection should take place per year with r~aaintenance following as warranted. First, an inspection should be done before the winter season, During the inspection the need for maintenance should be determined and, if disposal during maintenance will be requirede samples of the accumulated sediments and media should be obtained. In addlt3on to these tV`vC~ rlctlvltleS, !t AS Inlp01`tdnt to Ct~ecl: the condition of the StormFilter r.rnit after major storms for potential damage caused by high fio-n~s arld for high sediment accr.~r~~ulati€an 1:hat €~~ay k~e caused by localized erosion i~ the drainage area, It ma~P be necessary to adjust the inspection n~ainter~ance schedule depending on the actr.aal operating conditions encountered 'say tl}e system, In general, inspection activities can be conducted at any time, and maintenance should occs~r, if warranted, ire late summer to early fall when flows into the system are not likel;a to be present. f $~' C1 l,d CY The ;?rimary factor controlling timing of maintenance of the StormFilter is sediment load'sng. Site conditions greatly influence maintenance requirements. StorrnFilter a-nits located in areas with erosion or active construction may need to be inspected and maintained more often than those with fulEy stabilized surface conditions. Prior° to the development of the maintenance database, the #oilowing maintenance frequencies should be feel#owed: ns~cic~ one time per year after rrsajor storms ~irtteac s needed, based on results of inspection {The average rr3aintenance lifecycEe is approximately 1-3 years) Per Regulatory requirement 6n the event of a chemical spill ~requen~ses should be updated as required. The reco~nrnended initial frequency #or inspection is one time per year. StorFilter units should be inspected after major storms. Second, i# warranted, a maintenance {replacement of the filter cartridges and removal of accumulated sediments) should be perforrreed during periods of dry weather. Sedirt~ent removal and cartridge replacernert on an as needed basis is recon~r~~ended unless site conditions warrant. Once an understanding of site characteristics has been established, maintenance r7~ay not lae needed for one to three gears, but inspection is warranted and .~~ecommencfed annua€!y. arr~ir~g: 1n the case of a spill, the worker should abort inspection activits'es until the proper guidance is obtainer!. hlotify the €oca! hazard control agency and ~t~~€TEt"Ei Stormwater Solutions immediately. To conduct an inspection: IrrApc~rfint: lnspecticin should be perforrtted by a person who is fat~iliar with the operation and configuration taf the StorrraFilter treatment unit. !f applicable, set up safety equipment to protect and notify surrounding vehicle and pedestrian traffic. 6. Close and fasten the access portals. 7. Rernoaee safer} eciuipn~ent. ~. If appropriate, make notes about the local drainage area re'satiue to ongoing construction, erosion lJroble;T~s, or high fading of other materials to tl~e system. ~. G~iscuss conditions that suggest n~~aintenance ar~d rr~ake decision as to sn~eather or not maintenance is needed. ~tlainenarsce C3ecisiort Tree The need for rr~aintenance is typically laased ors results of the inspc_t;c,n. Th? following f~~air~tenanee Decision Tree should be used as a genera! Guide. Other factors, such as Regulatory Requirements, inay need to be considered? a. 1f =~~„ of accr,rnulated sediment, maintenance is required. 2. Sediment loading on top of the cartridge. a. !f =~ 1/4"` of accumulation, maintenance is required. 3. Submerged cartridges. a. Ef ~4" of static water in the cartridge bay #or more that 2~t hours after end of rain event, maintenance is required. 4. Plugged media. a. if pore space between media granules is absent, snaintenanee is required. 5: Bypass Condition. a, if inspection is conducted during an average rain fa!! event and StormFilter res~alns in bypass condition water over the internal outlet baffle wall or submerged cartridges), maintenance is required, 1. Sediment loading on the vault floor. ~. Visually inspect the external condition of the unit and take notes concerning defectslprolalerns. Assurtations a No rainfall for 24 hours or more No upstream detention (at least not draining into Storr7~aFiiter} Strrrctc.rre is online • cutlet pipe is clear of olJStrllCtiol~l • Construction bypass is plugged ar; In the case of a spill, the maintenance personnel should abort maintenance activities until the proper gu`sdance is obtained. Notify the local hazard control agency and CC?NTECH Stormwater Solutions immediately. To conduct cartridge replacement and sediment remoual maintenance: ethc~ ~; lasing appropriate hoisting equipment, attach a cable from the boom, crane, or tripod to the loose cartridge. Contact CONTECH-~ Stormwater Salutions for suggested attachment devices. lrrs~rtant; Note that cartridges containing leaf rrredia {CSF} do not require unscrewing from their connectors. lake care not to damage the manifold connectors. This connector should remain installed in the rvaanifold and could be capped during the maintenance activity to preuent sediments from entering the underdrain manifold. 13. Ramous the used cartridges (up to Z50 ls, each} from the uault. ~ ~rtn; Care must be used fio auoid damaging the cartridges during rerxroual and installation, The cost of repairing components damaged during maintenance ~~ill be the resportsibility of the owner unless CCrNTECH Stormvuater Solutions performs the maintenance activities and damage is not related to discharges to the system. C set the used cartridge aside or load onto the hauling truck, I~. Continue steps a through c until all cartridges have been remoued. Ic~rtar2t: PJote that cartridges containing media o~:f~er than the leaf media require unscrev~.=ing ;ream their threaded connectors. Take care not to damage the manifold connectors. This connector should rer;tain installed i€~ the n~ani€©Id and capped if necessary. i~. Empty the cartridge ontrr the ~rault floor, Reassemble the era~pty cartridge. E, Set the empty, used cartridge aside or load onto the hauling track, b. a;epiace any damaged connecters. 10. Using the vacuum truck boom, crane, or tripod, lovrrer and instai€ the nevti~ cartridges. Once again, take care not to damage connections. a 1,~ ti lase and fasten the doer. c f_ Remove safer}~ eq ~ipment_ 13. "=ir~aliy, dispose o. ti-ie accumulated material> in aceordar~ce ~~~ith applicable requlatians_ ~~lake arrangerner?ts to return the used ems cartridges to Ct~NTECe I Storrrr~~aic~r Solutions. F, continue steps a through e anti! alb cartridges have been removed. city Perfrrtae an as-needed bas's StormFilter units are often just one of many strractures in a mare comprehensive starraawater drainage and treatment system. In order far maintenance of the Storr~l=ilter to be successful, it is irYt~ierative that all other components be properly maintained. The maintenance~`repair of upsirearrr facilities skac,°~rld be carried out prier to StormFilter maintenance activities. 6n addition to considering upstrearra facilities, it is also important to correct any problems identified in the drainage area. Drainage area concerns may include: erosion problems, heavy oil loading, and discharges of inappropriate materials. ~ RECYCIEP ~~ PAPER ~ i 6 The accumulated sediment found in starrnwater treatment and caraveyance systes~ns must he handled grad disposed of in accordance with regufatary protocols. It is possikale far sediments to contain measurable caneentratians of heavy metals and organic clsemicals {such as pesticides and petroleum products). areas with the greatest potential for high pallutarat loading include industrial areas and heavily tr'a.feled roads. Sediments and water must be disposed of in accordance with all applicable waste disposal regulations. y'Jhera scheduling maintenance, consideration must be made far the disposal of solid and liquid wastes. This typically requires coordination with a local landfill for solid ^~aste disposal. For liquid waste disposal a number of options are available including a municipal vacuum truck decant facility, local waste water treatment plant or on-site treatment and discharge. ~ ~ ~ ~d -,,,"'-""t„~ contechstorvuater, carry C~ t~rawings and specifications are .available at contechstaarrr~water.cor. • Site-specific design support is availabEe from our engineers. Q2(}7 ~C}T~CEi Storwater Solutions CONT~~d-i Construction Products lrac. provides site solutions far the clot! en~ia~eering arsc#ustry. Cf:3fiITECN`s portfolio iraciudes bridges, drainage, sanitary SE'tNer; stormater and earth stabilization products. For iraforrrration on other C(?NTECH division offerings, visit contech-cpi.corn or call 8Qfl.338.132 hlcathing in this catalog should be construed as an expressed warranty or ~n impEied warranty of merchantability or fitness for any particular purpose. See the COk~TErrE-l standard quotation or acknowlederrsent for applicable warranties and other terms and conditions of sale, I Crate: Personnel: !_ocation:_ System S€~e: __~.-- _ _ _ SysteK~~ Type: Vault ~ Cast-In-Pfaee ^ Lineao Catch Basin ^ l~~anhole ^ ~,ther [J Gate: Sedln~ent Thickness in Forebay: Sediment C~epth on ~`ault Floor: St~uctura( Caar~zage: 1=stirrtated Flow from f~rainage Pipes (ig available;_ Cartridges Submerged: Yes ^ ~dc~ [~ l~eptl~ of Standing Mater: Storn~Filter Paintenance Activities (check ofd if done and dive description l Trash and [~ebris Removal: h~inor Structural Repairs: (~ C~raina~e ~,s~ea Report Revieuv tl~e condition reports from the previous Inspection visits. Date: Personr~21: _ - Location: _ Systerrr Size; _ .- System Type. Vault ~~ Cast-In-Plato ~; Linear Catch l3asir; ^ Manhole ~ Other List Safety Procedures and Equipment L~ser~: -- ~ Sstera~ bser~aticas Months in Service; Oil in For e b av: 'y'es ^ o ( ~ } g ~ed~~r~er~ /~~} t L 4 h ~t~ F ~ r~ ~a}F. ( , $ ~ } ~ J $ p Sediment 41LplfB can Vault I•IQ~()r. Structural Damage. raar~ae ree Report Excessive Oii Lcaading: Yes ^ I'Jo ^ Soa~rce; Sediment Accur~ulatlan-earl Paveraaent; Yes [~ o ~ Source; Erosion of Landscaped Areas; Yes ~~ o ~ Sourcc: trrnFiltr rtricig Replacerxtet a~ratennce Activities Remove Trash and Debris: Yes ^ Na ~ Details: Replace Cartridges: Yes ~ eta ~ Details; Sedirrient Removed: Yes ~ Nca ~ Details: Quar7tity cif Sediment Removed (estima te?}: Minor Structurai Repairs: Yes ^ ~lca ~ Details: Residuals {debris, sediment) Dispt~sal i'vl ethods; IUotes: ~O I I,~ <F.a ~. TI 5:~ 1 f c~r~tn: ~°fae~e gfd~ffns sfrc~fc~ ~cf ,part ,~ca~ site torwafr pfn, The 13 is installed flush with the finished grade and is applicable for bath constrained lot and retrofit applications. It can also be fitted with an inlet pipe for roof leaders or similar applications. ei erati+~ The ~~3F consists of a lumped inlet chamber and a earkridge chambers. l-iunc~ +enters the sc~rnpe inlet charr~k~er either y sheet flaw from paved surface or hen flaws into the 1= exceed the water quality design value, excess water spills over the overflow weir, bypassing the cartridge bay, and discharges to the outlet pipe. ~ica~ti s etr - i ~J2Qt~G ~ONi~ECt~ Stor~xawater Sealutions 3~o&I-free: 80C~.54~.~667 ,f s~f 3 cantschstormwater.cam Gatch~asin StQrmFilter C?perati~sn and Maintenance Guidelines alneraa c ui elfin Maintenance procedures for typical catch baaina can b applied to the CatcE~asin ~tormFllter (t:BF~. The filter cartridges contained in the ~~F are easily removed and replaced during ~~nainfienance activities according to the following guidelines. 7. remove accumulated sediment from cartridge bay. (min. clearance 9.25" x 1 ~ "~ rinse interior of both. bays and vector remaining water and sediment. 9. !natal! fresh cartridge(s) threading clockwise to pipe manifold. 1. replace cover and grate. 11. return original cartridges to ICJ TAG tormwater solutions for cleaning and media disposal. ainenance is estimated at 2 minutes of site time. for units with mare than cane cartridge, add approximately 5 minutes for each additional cartridge. l~dd travel time a required. ~2QQ~ ~®~~r~c~ ~tor6"nWat~.Vk ., :..W,~~ ,.. , . ~ . .... w, ~,,.. .~~;~m~~ ,.,...,..~ ~..~_ .... ,~., ,.. .~... ,~..:~ ~ ~. r..~.~.... . ~.,.... .. .~,.,..,,.~9 er olutwons To9I freq. 8Q~.54~.46C?7 2 of 3 contechstormwater.oom catchBasin StormFiiter t3peratios3 an€i Maintenance Gu'sdelsnes uitc~ ate ant In certain areas of the tin°sted States, mosquito abatement is desirable to reduce the incidence of vectors. (lsirac~ a Pies frt he hatch asiz®a tcr° lifter ~.arrvicides should e used according to manufacturer's recommendations, Two widely a~aiiabie products are iVlosquito bunks and Surr~mit .t,i. Briquets. For more irsfcrmation, visit http:I/www.summitchemieal,cc~mBmmc~s ctrl/d efault, tr~~. - Fcar more information on mosquito abatement in sfiormater B Ps, refer to the foiiowing: ttp://www.rtcr~r cavis.eufublicatioris/ rnangingmosuitoesstormater125.pdf X2006 Cot~T~CI-~ ~S#ormwater Sola~tians _. Tani! #ree:~EQt~.54~.4~67 ~~~, ~~ ~ ~~~ ~~ ~~ ~~.~~ ~.~~~~~ ~ ~ ~ ~ ~~ ~~°~ cif 3 eanEechstorsnwater.com c afchHasdn Starn~~'iiter operation and (Maintenance Guidelines i, 4.0.. 6~.A [4. d3 33 <<eit't?r"ror 4 fSe,er;firarr' . Res;; urge ~~h~~~srfa~:e St~rr~uv~t~~E~ ~,~ar~ac~~me~~t"~ I~i~~t~~~~~~ ~~~ ~~~~ ~a~~~~ ~~~r~1~~Tec~~`J ~ar~ber ~ter~ ~~r ~t~arr~~vat~r ~lanag~me~~t _~ri.~ r f~dote. ,See t6~e Sforr~aTech L7esigra lUtancea! for deta!!ed traforation on designing inlets fear a StorrnTeoh system, rna.ludirrq the Isolator l~o~v tr~'e~h ~l~tor Flaw with ~rrerflow Spillway ~ri~t to scab) ~~~~~~ ~vi~E~ ca~rci~i"imow ~~~~ ~cc~ra ~>~~c ~t~aa~r~ "3PTIClh~l~l. ac.c~ss Lail StorraaTecia at $$$.$32.2,694 or visii our v~robsite ~[ www.ste~rte~h.ctsrc~ for t~chnmcal anc~ ~s~oduct information. Lonk€rtg do~rn the lsolatetr acv frt~rn Phe rnanhale ripening, uro~er~ geotextile is shorn hefu!een the charrtber and stone hale. ~r a~ ~"., At a rninimulTT, StornaTech recommends anntaal inspec- tions. Initiall}F, the Isolator Row should be inspected euery 6 months for the first year of operation. For subsequent years, flee inspection should be adjusted kaased uporT previous observation of sediment depasition, The Isolator Row incorporates a combination of standard manhole{s) and strategically located inspection parts (as needed. The inspection parts allow for easy access to the system from the surface, elirTlinating tlTe need to perform a confined space entry for inspection purposes. Ef upon visual inspection it is #ound that sediment has accul~aulated, a stadia rod should be inserted to deter- mine the depth of sediment. lNhen the average depth of sediment exceeds 3 inches throughout the length of the Isolator Row, clean-out should be performed. Examples ref culvert cleaning nozzles appropriafe far lsalator Rote niainfenance. ~`Tlrese are not StornrTecla products.l ;~tart'Tc I~ltar Ram (not to scale) t2~ MIN ![? ~5' MAX OR PIPE iNSPEGTtoN F'C71'iT SET 1.5w FRAM Bf_?T~'r;?M LC?GATION PI=R of ctaAMBER EN~',INEER°a Rr~A C~aVER Et~dTIRE Rf3W WITH SI-ITQ M288 ot~ss z Nc~N-WavEN GEC?TEXTI~E SC-740-8" WIRE STRIP j~ STt?RMTECH SC-310 -- 5° WIRE STRIP I ENRCAP CATCH BASIN oR YYQVEN GROTRXTi~E THPaT MEET'S ARSHTQ M288 CLASS 1 FtEt~t11REMENTS, BETVYEEN STCINE BASE ANR CHAMBERS SC-740 - 5°-6' WIRE STRIP SC-310 - 4° WIRE STRIP ~a!! StormTech at 888.892.2694 or visit our webslte at .~torre~#echscacrt for technical end product lnformatlon. 3 ,. ~pt€~ aintanca Lag StasrC r vu~r ~r~ t 20 Heaver Road, Suite 104 ~ NCetherstield ~ Connecticut ~ 061Q9 860.529.81$8 ~ 1388.892.2694 j fax866.32tt.8401 ~ stormteeh.com 5torrnlech products are covered by one or more of the toiiowing patents: U.S. Patents. 5,40f,459; 5,511,903; 5,716,163; 5,5$8,778; 5,839,844, Canadian Patents: 2,158,818 Other tt.S. and Foreign Patents Pending Printed in it.S.A. Copyright. iii sights reserved. Storm3ech LLC, 2048 5090104-1 ~ ~ ~~ irtre 1~ -- Cathasinlanoie iM Steps a, ~, 13.3 E-T~~A"~ E T ~1~ICE I~ Manufacturer's I&Ni procedures should be followed for proprietary pretreatment devices such as baffle boxes: Swirl concentrators, oil-water separators, and filtration units. i°abl ~0 provides some general guidelines but is not a substitute for a manufacturer's specific instructions. ~' LE 1 ~-Pre#rea#en# inpee#ion and ain#enane uideline Sform~ech isolator~~' Row - S di B i , _ RI-Annually _ ; s JetVac -Culvert Gleaning Nozzle Preferred ~ e ment as n Quarterly or after large story evens F~cavate sediment -- ~-_ Catch basin Sul~p _ ~ Quarterly ~ - _ ~ Excavate, pump, or vacuum ~ Sedimentation Structure ~ Quarterly _ ~ _ Excavate, pump, or vacuum ~ - -~ ---I Catch Basin Filter Rags After all storm events.---- i- -- Clean and/or replace filter bags Porous Pavement Quarterly --- - -- Sweep Pavement -- _ _~~ Pipe Header Design e Quarterly Excavate, pump, or vacuum Mater Quality Inlet __ ~ _ Quarterly ~ ~ TExcavate, pump, or vacuum ~ ~ Sand Filters Quarterly or afiter storm event ~ Remove & replace sand filter _ ~ _ - This schedule deer nr~t accarrnt for reglorral ar site uarlables. Lrrcal murrlclpal prlidefirres shafd he followed fQr lnspeetion when auallable. # `The methods stated are mrnlm um guldelt'rtes fer rerr7a~al acrd eleening ctf system. other methods may apply. CeII StarmToch at ~60.529.$i$8 or $t38.892.263A or arisit our website at .~tcrriech.~~rr~ #or techra4cai and I~roduct information, 21 ~; ~a ~; a~ ~ gar ~~ ~ sP~cT~ I~ec~rri~zr inspection end n~air~tenance ire essential to assr~re ~ praper~iy f!sncticaning starrywater systerr~, Instaectiar~ is easily acccar~rplished ti~rough the anhale ar optianal inspectian parts of an 9solatar r~aur, F~lease fallov~ laca9 ar~d Q~I-iA rules for a canfined space entry, inspection parts can allow inspection to be acccarnplished A Sforn~Tech iscalatQr E~aw shcauld initiaiiy Sae inspected pxun~pfes of culuurt cfr?nrrfraa~ nozztes n~pr~3prr`~te fc~r fsr~lat~or Rcwr~ rnalnteraance. t`These ire ,atrt ,Storm leetr pr_r~ducts.) 22 ~ Call Sfc~rrnTect~~at ~GQ.~29.II78~ oc 88$.892.269A ar v~siT tier uvebsi[e at w~nr~nrstarmt~ch.ecara~ fr~r technic-~~ ~n~ ~rr~duc[ infvn~t~lPiort. Latskinq d0~'!P tt31s' t$()/~f(3r R(1rN, fitpac~! ~etUac track, (This is not ~i StornrToch product.) } ST TEC S ~.A `"; ~ STEP- Y-STEP Al T 4 Gall StormTech at 880.29.8988 or 888.892.2894 or visit our website at .~tart~cE~.~or-'tos technical and product informatian. Fg~ tCE TRtC IPE E DER QI T A tE Cleanout of accl~mulated material should be accom- plished by vaclauna pulnping the material from the read- er. Cleanout should be accornpiished during dry vtreath- er. dare should fie taken to avoid flushing sediments out Through the outlet pipes and info the chamber rows. eeentrie Fieacier Step®by-Step Maintenance rc~ee+~t~res Figure 2U - Eauentri ttifaid aintettattce ~, °~, 5 ~ Call StormTech at $60.529.818 ar 888.892.2694 or visif our orrek~site at sir .starmtech.cc~rn for technical and product information.