20110166 Drainage Rpt 07012011Yelm ®ay ~~ar~
Yelnt, Washington
Drainage Report
Sutp, 2612
Crepared Eor;
Nlarijke lleu[~cher
(AOt Macrin Rd NH
Lacey, WA 985 t6
Prepared Dy:
Shea Carr Jewell
Jim Gibson, ['. E.
2102 Carriaga Dr S W, Bldg H
t3lyrnpia, WA 98502
360.352. t 465
~'~wo--~' qy..
RHEA GaAf~°~~LrV i
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CERTYFYCATE 6F ENGINEER
PRO]ECT ENGLNEER'S LERTSFELATZON: ereby certlfy tna: tF,is Lrainage
Repot Nr Lhe `lelm Day Care In Yelm~ WasM1ingtory nas been ptepsred by me o
antler my super entl meets Ne m stantlards of the 1992 oeportm of
InlmJm
Ecology 5[ormwa[er Management Manual for the Ftige[ Souno Ha51o entl n mai
stamams o~ engineenng vraenre. [ unaerstanc mat cne 7unsmcnon aovs nue ana
ww noo assume uabwry ro: me sunmiency, swtamnN, yr pertormanre of arainaye
faailaes tleslgnetl by me.
Prevareaby ]Im Glbson, P.E.
TARLE OP CONTENTS
E. STORM ORAZNAGE REPORT_______..._...___......______.. .........1
li PROPOSEC PRD]ECT DESCRIPTION __._ _._ ...__._1
l.z EzlsnNe comomeN>.... ........ ..... . ........_z
1.E mFILTRAnoN RAres/sons RE~oRr ....... . ..._..._z
L4 wEL~s AND SEaric srsrEtis ...__. _._ _... _..z
15 FUEL TANKS .......... _....... ......._2
1.6 SUO-9AStN DESCRIPTION ......... ......... .. .. _......3
1J ANALYSIS OF t00 YEAR FLGOD ...._... ......... . _........ 3
1.P,. AESTHETIC CONSIDERATIONS FGR FAQL!TIE5..._._..._............_ ......._.3
is DOevmsrREAM ANUVSis. ......... ......... ..._.3
1.10 COVENANTS OEDiCATIONS~ EASEMENTS ..._...._......._ .......... .......... 3
l.ll PROPERTY GW NER'J 0.550QAn UN ___._ _....._ .__-3
2. EROSZON CONTROL REPORT........._....._..._______......__. __......4
Zl CONSTRUfTiON SEQUENCE AND pROCEW3E........._.___....._._ ........_9
22 TRAPPSN65EDIMENT....... ......... ......... ._.....4
2.3 PERMANENT EROSIOR CONTROL HND S[TE ft£sTORAT[ON.__.__ ... _._._5
2.4 GEOT6CHM.CAL ANALYSIS ANU REPORT .............._...._.._........... .....__. 5
zs wsPecrtom sEQUemcE... ......... .__.. s
z.e cDNTROL of POLwrANrs Dn1ER rHAN seomlEmrs .. _ ............. ......._.. s
3. MAINTENANCE PLAN ........_...........___..........__ ................ _........6
31 2EQUIRED fAHiNTENANCE .... ......... ....._.. o
pppentlices
Appendix AA - Draloage Calmlatlons
Appendlx A-2 - Draloage Pians
Appendlx A-3 - Vlclnlty Map
Appendlx A-n - FEMA Map
Appendlx A-s - sots Report and SCS Sorls Niap
Appendix A-6 - AquaSwirl Data
i. .57032M 6€YAINAGE REP6RY
rnls report bas been prepared foacwmq me fomac ooemea In me Drainage Design
nd Eroslpn con[ml Manual (IJDECM) for Tlturs[on County, 1994 Etll[forr. TM1e 1592
Uepar[men! of Ecology 5[Drmwatsr ManagemmnP Manual for [he Guget Sound 8asln
has been usad as Me deslyn cY[eda.
11 PR6P65ED PROJECT OESCRSPTIOM
Pm]ec[Vroponen['. Marijke DOU[scher
L4y1 Marvin Road NE, Sul@3oT PMp 254
2acey, WasMngton 98516
(360)402-6871
Pagel NumbeC 2D2413too1
Leyal Desctlptlpn: ~ectlon 24, TownsM1lp 18 Nmttr, Renge 1
e, w.re., maamn coanry, wa
Total s[e area. a.l6 acres
zonea: ca
91 Ce Atldsess'. llakcowFl
Project Overview:
TM1e Yelm Day Care site Is looted In Yelm~ Washlagton and Is bortlered on [he
ortnwesl by Tahoma 91vd~ on Ne snuM by Berry Valley Roatl and on rbe northeast
by vaunt IoGS.
The prope~setl development Includes constmc[lon ofa 9,]60 SF tlaywre, 5,000 SF
nary ulnlc, a S,ooo SF meNCal cLFli[ with the as5odat~+i parking and
Inrastru¢ure ana Gerry vahey Road frontage Imprevemenc.
conscrocnon on me ste ww be comple~a In phases. abase 1 of ene pmjec: wl!!
clutle [M1e cons[rud'mn of tt;e Berry Valley 2tl froneage improvementr and the
proposed day core Fadlity. Tne oo-slte :nfrasirucNa necessary m support [ne day
detlln9 a sformwatcr fsrillry slzetl to nand;e runoff from the entire site, will
also be constrbHetl as pert of Fhase 1. TM1e madlml and ve[erfnary tlinlcs ana the
rcmaming on-9te InfrasirdcNre'nllll be completed In Phase 2 of Ne pro]eC..
The pmpesed projeRwlll crew 2J3 aces of Impervious aaa antl will dsturb an
addltloeal L43 acres of pervrOUS area.
aria i
o-nase v o-nase x
O Ste Deve np nt (,pve2oe Ro~S D a mert~PVeraxe
__f{rY: Sumr _
outld:eg Roof Area 0.12 acres Butldln9 Roof Area 0.23 acres
Park6~g and Sldeoralk Area D.>3 acres Par?<in4 and Sdewalk Area Y.I'] acres
Ulshvbed Pervious Area L18 acres Dsturbed VervIUUS Area 0.25 acres
Berry Valley RV. Frontage o.30 acres
l'otai Area 251 acres TU[al Area 1.65 acros
Tote, alas for bath ppases p.36 aces
Tha site wlli be dvltled Intn [wp tlralnaSe basLrs~ Basin A antl Basin B. Stnnnwater
from Yne mrtb half of Betry Valley Rd antl Me on-sl('e Improvements, (Basin A) will
be collected In a cattin basin antl pipe wnveyance system and tllrecYetl [0 2n
AyuaSwld for:aa[man[ prior [U being Infl IG'ated In an open ppntl loca2d in Ohe
southeast comer of [he Varrsl.
The stormwater from [be south M1zlf of Berry Valley ftq (aaSn 0) wGt be conveyed m
a Temporary roadside tlltcM1 for.nFlltra[lon. Once tl~e property m~ the soutM1 side of
aerrv vanes leoad develops, ara;na9e v.w be ccN.eaed ana honoree by met
tlevelopmem.
tame v
~mxn4. caveraoP s~~~~n,a__.
____$sn A aesea
..
un.-sqz orr-sRe off-zrte
lmpewpus urea (Acres) z.3o o.za o.20
olsmroed pervious Area (Acres) v.a3 o.co 0
rot lArea (Acres) 3.1a o.za o.va
smrr»wate. rreavmene:
e~s1n
Per Sectlon F2B U( Me 1992 DOE Mana51, &e reGUired s[ortnwater [2atmant flaw Is
based on [be 6 nion[M1-24 hOUI'srorm event IDls event Is tnmputed as 6a^a of Bre 2
year event. Acmrdin9 [U [M1e Isopluvlal maps in Appendix P.:II41 oft'-.e DOE
stormwaler mantiel, [M1e Yelm area bas a 2 year-2~. hour storm of 2lnches wh.Gt
yleltls a 6 mon[b even[ UP 1.28 Incbes. StormShed software was ssed to tleteu~nlne a
ontb treatmen: Bow 0.69 c`s. See appendices for StUlrc!Sbed model out0u[
sbowing [bis tilctiia[etl how.
Stormwa[er treatment will be provided by an AquaSwlrl MUdeI AS-2 5[ormweter
Treatment Sysfem. 'Cnls mode; win frea[a water UuaIIIY flow U. 1.1 cfs, whitl: Is
nearly twice [he required heatmentropadty-
vayzmt race:
sa~ln ~
Treatment Is not proposed for Basin d hu[ a reduction of pollutton geneaHng surface
- III be accompllshetl with the proposed development C ently ],362 sf (1/2
of [h2 14,]24 sf eKS[Ing roadway) of Impervious area sheet Flows untreated onto [he
property Fo LAe soutR The proposed Irnprweenen[s will re -e the amount of
impervious area to 6,090 sf (0.14 ones) and dlreIX runoff to a roadsitle ditch. The
tll[ch will provide some treatment prior [o inFlltratton.
Storvmwzier 5fnrage:
Aasin A
Stormwaler wl` ba conveyed from the AquaSwlrl to an open Infiltra[fon pond The
Infil[ratlon pontl will aso be located In Me soutfieas[ portion of the site and has been
zed to provitle a iramaum 1' of freeboard tluriny [he t00 yr- 24 M1r event (4.50
inches).
Per the remmmendaJOns of Me Badley-NObte geotecM1nlca; report (see appentllcesJ,
inHltratlon rate of 26 Inches per hour wds usetl for design. The Infi!tmtion pond
wail have a 60'z80'x10P [nan9ular bottom, wi[b a bottom surface area of 2,400 s( al
vazlou 333 ana a fop surface aroa of 5,905 sf at elevation 337. TM16- provides a
¢rCal available storage of approximately 16,]]0 cubic feet. 5[UnnShed sof[wa[e was
sea eo model and size the inelvauon pond. der [ne model, a coral vowme of 3,3]3
cubit [eat (Water Sm,`ate Bevatlon a 334.16) !s tequi2d [o Provide stooge Por [he
loo year smrm. see she mode! outpue m me appendices.
1.2 EXZSTZNG CONOETdONS
The pro]erX area Is undeveloped ana Is wvered by grass, shrubs, and some [;ees-
malnly Douglas Fic Mos[ tha trees wlil be removed fo[ [he projac[. Currently the
and s:opes ata grade of les Man three percent fYOnl the south [o [he north. No
stormwater tributary flow enters the site In sl9nlflcant quenHty. The current soFl on
sire has enough InFl[ra[lon capability fo easily adsorb ibe °x!sHn9 site runoff from
s.ann events.
3.3 ZNFILTRATSON RATESj5O3L5 REPORT
Tha Soll ConservaHOn Service (SCS) Soll Surrey of TTUrston Count' dasslP.es on-site
mi6 as lll-Spanawy gravelly sand loam, 0 N 3 percent slopes.
3.4 WELLS ANO SEPTYC SYSTEMS
The owner Is unaware of any abandoned or existing w°IIS on site. Proposed buildings
wal be mmreaea ro tiro oY velin water and sewer nrnaes.
Y.5 Fll EL TANKS
No fuel tanks are known to be on-site. A review of the Department of Ew!ogy's
Leaking Und¢rgmJnd >tprage Tauks (LU4J IISC did no[ tndlote anY ezls[Iny or
abandoned fUe:2nks on Me pr0]2Cf slfP-
July 20L Vebe
Y.6 508-3ASIN DESCRIVTYON
The pro]ed area Is par: pf me Nlsaually alve-waoersded. smrmwacer from arcs
dwelopment Is motalnea on-sloe.
mere's np off-site tlralna0e enbpmry m cols sire.
Y.] ANALYSIS OE 300 YEAR FLO00
YMS pro]eH has not been itle[r~fied ds a 100-year flood Itazartl area. A FEMA FIRM
Map Is lnp'uded In the app¢ntll[es.
1.8. AESYHETYC CONSYOERATZONS FOR FACILITLE5
All OlsNrbed pervious area wl!( be vegzaled and tantlscapetl. All s[orcnwa[er
facllltles will be vndergroun0 and will opt requLe lantlsape.
1.9 DOWNSTREAM ANALYSIv
All s[prmwater generated will be sto[ed sod infJtated on-site. Ai! re[entloc iadtitles
have been designed to retain and Infiltrate Phe 100-year stgrtn even[. Therefore,
downstream fatllitles will not be affected bV d;K project.
3.Y0 {OVENANT5~6EOLCATIONS~EASEMENYS
On-site drainage fadlltles wRt require mu0ne maSn2nmce. AeraR malneenance
agreement behveen [he ovmer and Cley is ateacheU In ibe appendices Fba! ~.vlll allow
<M1e City [p access [be fadlt0es. The owner 3 responslUle for perfprmfng regcfar
maintenance of Me storm ealnage faoiFtles.
Y.3Y PROPERTY tlWNER'S ASSOCYATION
The entlre parcel Is currency gender a single ownersMp and will not regWre cep
odetlon. [f [M1e ownersM1lp of parcels s {ran=ferr'ed, an assodaflon wfa be formed
m addrec; maintenance pFyolnt fatlll0es.
s~.r uu raga 1
2. EB2K65IC8P7 COIVTi20L PYEPOFtT
2.i CONSiftUCT20N SEQUENCE AND PROCEDURE
The OroGa`ed commerCal Jevelopm°nC ra.II InGUde site gatling and al'osion confro!
astir
es deigned [o contain slit and Boll rvltMn the profe¢DOUndarle dwiry
nons[iuctlon uoL4 pemranent vegetation and site Impmvemen6 ere in plaa.
eros!on/sedlmenr~tmn ronwl snag! ne arn!evea by a rAmbmaeon of
structural/veyeree!ve rover measuas and mnsm:rmn aram4°s ~uored m flt uhe
Dent Management Pre¢ICes (BMO's) rani be employetl [n propetly Gear and g ode [be
site and to schedule wnstmt.ion activities. Before any mnsbLCPlon beylns onske,
- ontml faIXilUes shag nrst be Instzhetl. the planned mnstruction sequence Is
follow's:c
.. seneawe oremnnrucdon cvn;erence w,ch me eery, conraaror, profea
engineer ana conscmcPlon shking surveyor.
2_ Install rock mns[mctlon ent^ance. Use 4" to 8" diameter quarry s0a115 wi[M1
12" minlmnm depth.
3. .ns[all fil LCr fabric Fencing In the loatlons s(:own on [M1e plans.
a. vmmde m!et pmoeceion amana e=song amn banns.
s. aeareim (smbbmg and magn grad[og).
o. rvlamtam egu;omeno and water supply for oust rnnorol.
Z Designate a-, area fa asMng c re[e trucks m control [he runoff and
eitminz[e entry In cFe smrm drainage ays[em.
U. [nsrl=. underground u66ties.
9. pmmde Inlet proteaia: around all new catch basins.
to. Mamtaln all emsmr, eoneror rmduae Gnal me erm cite s smmuied am sio
runoff ceases.
2.2. TRAPP2NG SEDIMENY
filter fabric fencing wi0 be lnsta!IxHCO t2p setllment bePore runoff Fxlts the stta to
atldltlon, Inlet protection will be Ins[r311ed arountl as existing and new otcM1 Dasinc to
filter out sediment before mnoff eters [de sNrm system.
H stabilized mnsl~cdon entrance w11I be Insteil2H Co prevent construction vehltles
(mm [racklnq Soil onto roadvtays. fFSadiment' Is [racketl off-site, It shall be swepC or
snoneled rmm paved surraces on a Barry basis, so mat ¢ Is rot washeH onm existing
mirth ha=ms orome; storm aran,age aeraea.
sam ~,ae„~u
Lin ett y~aa a
Dutlny Ne 2iny season &pm November 1 through March 31, [M1e con[raROr must
any disturbed areas grwfef Man 5.000 sf In size if tboy will be unworked for
e than L2 M1ours. MuloM1, sodtlfng, or plastl<covatlny shall be usetl [o prevent
el osron In these d2as.
2.3 PERMANENT EROSION CONTROL ANO SITE RESTORATYON
All tllsturhed areas will be paved wleh aspha¢, covered w¢h buildings, of Landscaped
wl[fi grass, shrubbery, or trees pet the la.~tlsaping plans-
2.6 GEOTECHNYLAI ANALY53$ AND REPORT
None of the stpnn tlralnage htilitles are lo[atstl near [he tap ofa rteep slope.
Therefore a geotechnicai analysis forslovo or Boll srzbLtty was necessary.
Y.5 ZNSPECTYON SEQUENCE
In atltllGOn to reyuaetl Cty lospoctlons~ [M1e project engineer will InspeIX facllltles
related tp stormwater [rea0nent, aroslun mn.roi~ stooge, antl conveyance durln9
ns[ructlon. At a minimum., Me followlny Ite;^s shall be lnsp~tcai at Me [Ime
spedFed-
.- Te aroslon control faclll[Ies sM1all be Inspr[ted before Me star[ of daatlrg antl
grading to ensure LM1e Polio W(ny s[mttures are In place'.
construction EnKance
b. Filter Fabric Fente
Inlet pro[ertlon of axis&ng a[dt basins.
?.. TM1a ronveyance ysEems will be tnspiRetl aker mnstru2lon of the:adlltles,
but before proJett wmpletlon m ensure Me following Items am ir. working
order
Pavemen[Oralnage
b. CatcM1 9aslns
Conveyance Plping
3. The stormwater treatment antl storage systems shall be Inspectd tlu(iny and
after mns[ructlcn to ensu. e',
a. TM1a ladllty !s mnstv<3etl to tlesl9n spedfkatlons antl [M1at proteNOn
from setllmenos in place.
a. TM1a permanen[sile astoratfon measures sM1all oe Inspadetl after landscapln9
rs wmple2tl.
A final InspecGOn shall be performed to verify final 9ra0es, setYings oY control
s[ruRUres an0 ail necessary lnfornaHOn to complete [he Engineers eonseruenon
Inspectlon Repov[ Form. ThIS form must b0 completetl prior to Flnal public wmk.
construction approval.
Y.6 CONTROL OF POLLUTANTS OTHER THAN S£6YMENTS
The contnRUr wil! be requlretl to des9na@ a washdown area for mn[rete tnrds as
cell as a te;nporary s[ocKpll° area for mns[mctl0n debtls. VeMCIe fuellny, washing,
or maln2nance shall occur In desl9natetl areas only.
fwr aou .,p_
3. MAIN7EP31iPICE PLAtV
31 ftEQOYRED MASNTENANCE
The .ollowiny pagfs mntaln maintenance needs for most of [he componantr tM1af are
part of [he pro]ecCS drainage system, as well as for same componen6 [ha[ the
proje~.x may not have. TM1e theckllst should be compe2tl for ell systen m entr
on tt~e Pollawtng schetluie:
?4. MmChty from November MrnugP Ap.T.
A. Once in tale summer (preferably>eptember).
S. Aker any major storm even[ (use Y" In 2a hours as a gultleVne) items markeb
5„ only.
Using phomcopies oRhose payer, cheb oh [be problems investlgatatl each tlme an
nspectlon was performer. 0.dtl comments on pvbiems found anG ac[lo,^s taken.
Keep LFese "Ghecketl"sheet5ln Che files as [bey will ba used to rte sn aneua! roport
(due In Mey). Some i[pm> tlu not need ro be looked a[ every Item an Inspectlon is
done. bse[hesu99estetl frequenq aC[he lea of each Item asa guirellne for Lhe
nspuSlon.
The jurisdiction may be miler (or @chnlcal esslsYaFlce. Pi2ase ro no[ hESll'ate Po call
especially IY it a unclear whet; er a par[Im;ar situation may be a problem.
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APPEfi'P}T% A-i -
ORAWAGE CALNUITLONS
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APPEN~PM A-2-
DRAINAGE PLANS
APPENDIX A-J -
VSCLMTI' MAP
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APPENDYM A-4-
FEMA MAD
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APPENDYX A-S -
SOILS REPONT and SC$ SOILS MAP
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R omisian af:The 6YZt37ey 4wup, inc,
PO Sax Y225] Olyivpla WR 46148 {'864 35> J883
me Property angrrgty
e[9AhD Squarefeak a:
: pro~eoe is new asphalti
and new loMecape ar,t
cane nuous perlmetec
Columnioads riili 6e::
wrli he ett6er mncre4t
auHrorhed 9n bgt
Eng tear afMC$quar
~~ "~~
rppra{ge tha proleces gvlGdes gn <onsNta ri :~
SITE CONpiTiONS
eland nearly level. Mayor xegetac on of the site is peuglae
is Sgd~h broom, Himalaynn 61ad<herctas and gregon
{grosses In ppen areas.
~t -4 ,~ ~
~ L
tvw ae5w sa to 5peze ue paony socxegmxwres ps cgar4e sanoz anpn
gravels wuh catibles and boarders rvlth faw foes These so is were huviailYdepos red as:
recesswnai and p~oghnal sera fled pebble cobble and¢oulder gravel dePgsns n
neirnater Svgems and deltas du~ing~he remeatq[gfl~yashon bbe of theCOrddleran
glaeier not thwaN dur ng the Fasergia<ae on in late WI?cma non t me Inzhe Geologm;:
Mop pfthe 4enaclw QvadmnglC Wary~ogtoo compfted by:HenrY W. Schazse;Open i fe::
Report 87 I I and pubisshed by xhe Wafimgton d v s~onof Geology and E.rzh
Resources 19Q7 th Frotece sue ~slnapped as Qdvg Y4siwn outwazh gravel.
The depth o(aidewdon of tlta resrples was h niSEd by FberaFM tioe8hmg of 4m test pit
WSS TR9Cp$.VlEfE TEfmlaRd W~eO Che Y9ume afjhdCerGt Slgng{1NglhSq frig reSp4
exceeded ehe'rn[e that the ex<avaed ~ coultl remove iiiaker al
No prou rd watgr o eepage deve(ppad m ahe test p w.: Wo da noe expec5rtax high
seasonal groun4 waeer levers woultfhav any adverseaff ton theste devefopmene
work Infil¢aklon of storm dater 71I be ap d mw d,®koarso snr~ds and gavels
DI59USSIONAND NEfOMMENRATI4NS
S re Pmparatlws
We expec[ [ha[ m rv mal slm gyading and filing xnll be rGqurzed to develop Eh s prgiea
You should eppece ageneral reducylon m surface elevagon of nbquc one loge by the
sanppl ~g wdgrublvng operation Tlue SpanawaY mil sgpea does cgntaln free along wah
floe orya~ixme{anal androoa (fsuz develoF nano wgGk s conduced dui{ngxhe rainy
season we cetdmmend thatthis sail unit be oar piled egexpose ahe non.mmzwi e
usyurnl fUl ad
M1in dianeai`
M1 bacW 11
Od{OdUeSYIPS'-'
ng wtd
n sands and
>si Slcpesr
have any
seep ezcavaa on
shoWd nave e m n mwn dimensanq(3 Q by 36 feet sqµ
Sealenie~¢of sVUCtvres desgned rotbe~ecam nanded
prepared accord ng xo the ~ ecommendadons of th s rape.
ang iutumn Toads
an<t placed un so I
be sgyuflcanr
Floar:Slebs
W4BD0.etttftfl~{0o[ 6($
5[rUCWtai ¶ SKEe011Y GO
8nd ~fAYPJi Wldet aS P!
[f1e50 sOliS are [oaRe~ W
of 5l6-nth minys crushe
Slab.
Where exver oewaUCV±a~
compaeeed oo the m~mm
qt n hk of comppcted 51i
walkway slabs w (c I ct
We espectthac~labs vsj
eonereee slabs sheuld bq
Pengn Mnnuatfor the ek
Panng Section
a se expect
4d5silitatipr
dte subgrap~
eclf d danslry pf ah report e pasyiYe sail
e4lnent Of frlcii0n of 451s pxrm u46ie
rted by erthe~prool roiled o9iwaslj mlis or by
Jie On-sue ouNrssh calls fie ourrash sands
xeak matermi Gpe ao qro lack oflmas, in that
.Ion to the piaGemene and wmpactjpn ofa Ilfe
m One gntl ng aperatlOns fer cudijg ofitle
Ne outwaah so Ir and
of 1¢ad eg.:The
tam(arang $iee)Msowws
tloutwaahxo la We
MD644 On
`. 0804I7PI
'. Pages oi]
in
wau )
soilsare.Pc
Inilmrat on P
The uurnasl
These se lil:
and porous
~nPe os~rrt
se is sln ex
,iep~hof..
kite=:
lien aq~'-
a~d~m:
vey mprolun{rare coame gra rulap vaeer ais
o ngu eha si[Q outwash sorts erGpermeahiz
I lack rues'.Even wrth the localized redvmes
pll f ti sna4td bCpiaced m un Yormpnr xot eel i to qf.c ~ m cvghc rzeh loose Yh~Gnrss
Each hft Shquldpe epndldonad m qe ape mum mmimrg wore rt a r8 compgated m the
spetlBed min niym density before lyiaang ehn nezeLh Wefurtherwwnirfiend ehacall
uallry trench ba5killl bemnpactedias sFec tied above EarNwork should be performed
under ehc continuous supernsion aid test ng of an approved tesnng agenryco eizura
compimn<e wrzM1[ho cgmpamon raquxemenca
Phcemene of 611secelenon slopes geeamr shoo S I (ho rngnwito veruwR g II be
benched as do ectea nto the naaivegoila. Ne~gho and wiQh of the bench ui0 he
deeerm nod m She held by ahesq Is snglnee ~ or englnedl'.oggaologsr
^vresmcwd slopes shall oat exceed 2,t (hor zanuil m Nert cad Por fill embanWnencs
and cue drat a;~ppse eat re se is. ljlifll slopes will be [91Igd lire prolactpmnl
engineer s reiijpnsible fpr the protao5lon of d¢cgnxrNeted lilt slopes Go-m encnlleceed
runoR Wa reggmmend that ali<ut]hod flll¢IaPos be s`getled as soon as pq;dble after
<eozkuttmn sd: ebas vegetavot ean'proceve she siopesfmm sheeewashing:
Ale 60 a to 6e placed dunng penad; d unfavorable wadsher orwh to the Lll s frozen or
thaw~tg Whon woH<IS Smppedbyrdln, placement oFfill wdl not resume wtlf tEe so is
engineer or edgloeermggegiogst4etermmes shat the nionwre oontent rs 3wtabla far
comparnve eRottand that the prevouslyplaced fll hasnoe been loosened:: Shq
<oneracmr will. Wm appropriate measures der ng unfavm able weather ro protect the FlI
already placedMeasures chacmaybe required mdudelM nog wheeled trnNtc and
grade igm provtdetemporary drz nape of ehefli 3c deed eeaon of the MllF eng~peer
eonselveuon Isunperney
eradley.NDble is to be g ven the apportunrty ro revlew:ohe Cnal plans and spec~tc.tt ons
fon sods wprk Tbrs swven(y3c.14ourgepmchn eel rgccmmendn[ans hzde been
mrre<dy InseepFe[ed and I nplemeneed In ehe (Ina) design arvd spenfcac~ons
HftAQLEriNQeLE GEOTECHNCIAL SERVICES
Report prepared by
t n eri
~/~~
Oavd C. veng.LEG. S n
25 Sepcemho~2Dp8 ~ ~ ~tnpj'-gyp`
asta 6ep~pA
onvio c sreCtiie
Spaoaway TuFmdv
Ikw-BRfeet Yaibw bravo course sandy Bravais wch cobbles andoccastonil
kouldcrs.
Test P e Three:
9ta 13 feet. Da~kbrowng2veliy suty sandvd[ISa large volume gf mots.
Spm~away Topso I
i 3 m -8R fee[' Yellow-brgrvn coaru pmtd/ grgveis with cobbles andbia»onal
boulders.
Tex P c Four.
0 eo 1 7 feet. Dartt krowngrzveily s iry sand wJth a large volume pt Dora
SRarmwa~TOpseil
1.7 ca-83(eet Yellow-bmrvn wane sandy gmvei w¢h cobbles
Tese He foe -
8 to -18 feet Dari<brpwn gravelly s by sand with roots, Spanaway Topsoil.
-18 w -6,5 tees' Yellow•brown coarse sandy gravels wrch co66izs
Ne ~ ourW waSer or mdkut on ofseuonai h gh Bromid watae ievetswere pbservzd n
+hetestpu Tg¢t pcUepth was lmieed by the rapdslo4gh'n%Pf die xrendy walls as the
- eespias wale bz g excavaxed
r h o ~" - ~y?.'
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APYEh~TX A-6 -
AQUA-S W SRL DATA
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t TA€AY@tiENT:StfLilYSflNS
9m
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a ~ YR '.
tO. WUp liar 1S
OP(SSIQP ONXE9PNNA3rzLYTY yy
SWr ve dear/ sy u~.aanuYact xr ~p l
4w 4aF[CC` Y3.
SU6fRSTTAIS:. b
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~.
233+1i893RkA 0i4V¢t 3LiRC ~ x £tkY 'YCt. YiDntJNl T4TtlE58e9333g3
Pfioae SBk&)363 59RSn Fdx 46&~).636-Y.i1X.
xhe mip.
avamatl~nrnave shown me nqua,.w rl~^
amleves a TSS {TUtal Suspended Sapds}
re noval 9[ 9;`W wicuUitEn pn a n2C
annual bass Sae fha Pario[martie anA
P2,bng'Sa<8ou lnmmre dehds
Each Aqua Sw ri' scnsm cte¢9r
yhMre~,nttlhl puabte maEeuais~tll also me aeeit
enu pmenC dgtl a nra langn, rgSpecdan and mamsaija
pvers¢ed nsars NdL aOoW For Ua(~i examNatlo i and Sleo
me snartlaer::
~y6Y'@Y33 ~pt'PsY~i4)~'9
v~IfWi9::
made e@sy; w m
t'roui enfe.~ i,
em;: Pvvpe;::iu0
Leaner peak smrrn
mote PIPa, MVhX
Ltud:/ £reafinerlt
)oiWUntiinropli@
fhe nca.mtnS otter no 4vyln ~ {, Iaf;,a~T
r
when >tp nvm.e emen met ~5 °rg
Aql SWl( thfAUgT a e 3 ~
an4enaal nit ilp~ L~aS 3t< r ~
p otlu es a rlaNaY {o vl «etj ~p `~ `
dow Aamm ,ta zuse In ~z~ 3~
coaamUmtes ' Co SeYx1e m Ehe ? (t i ,
base pf tihe anti Aow ~'il~~ ei
eNrmwffiec t(w s mrerrm'r+nnf; a• ~~~~ a
by naNre, 'i NE A9ne'Swidu.: s, `'
rerA nS WAL;I `LLFWe2n StlRilt{ ~
events pYOVl41n9 Uofh "m/nwnlc ~~, I
mid qul9s[vn~ Rod ng of soli',' ~d
The tly iamk seVlmg bcsud: ~, '% ~ '
den~g each +sNmr event wPl» n®nmauppu n°nbu°s.o-
the qu.esenSSekl ng pkes Fiace
hetween sactiasslue sroYrns, A cyrM nation or gm. knttcnai anA DYi°redYnmr c
dreg fcreea gncaurgu :5e aoil{fs N drop nu° or Hte fl¢w ene ml9mee;w She
canter or tgGrnamUer where ~rzCtic hls are the owese; as ahown fiom eptenslve
CFU lnoneQn~ See Pedoenraocg and Testing°firrti~e
der~rts.
A q[9e 2C'een.'-ce o Sa[t2]be
Ids Ip 5[oOY WOreY !!e a.U~ ~Y
Yeµorted m Ce lull ., u, 'H`
lave Iew s. Lmy ~ ~~Y.
4Ep{i4~ .. ~'
~..
I
T ie[efote,
,oe volume
O` WaleY.
reWIl12U U~~'~ ,.
ul
ma Aqun->wrm° 222{~E
P ov des [he) quiescent set;i6ig;.
that naeatias pelror m, nce s
fwthermoW,'. 4ee w fired t7~
se6ime[iAndgenl9 um Iarge4. °% :h
~1ef6des {.e hai 2P0 x y
mrc nns}, ltie aver pa he e,' ~ 3
secde, lagler tla taYn I r~ amawrwu¢
sus)eMed of the ws,e }'~ ea"u7lhaepp ~(d~
~, .„y
t
A4ua5h eltl" 27 ~x uuC
tl caS ons
~!O§95 __
3d so then p ca i 4 y be used totre!,rq-$
olet znA aR et,pipe of the same'eievdtlon,
amnecte~ mrecCiy m ~e ox~shn: sNm
~a~moia, 6e:aui~ ¢.on ~ghMregfiC nat.~re
whi , es4~ngdiimskt cure utiiltl6s Q¢.,
,ccd 4Y >>rAl~dnpzi
lP Cat /, ai;pqua5niz.
o~ns~efizs4stnheu
fl¢nvencv
au aguaswi~"SVSlern
a minimum pF5 inches
Nnci a i of IK•e?X~en9p
m ww5er a(iy auoyaot
w t epevimn and c ~annrv ar ¢i~Aqua Sw~ I ^ s s npie 1 ~a
~r ~ r"~ bamoar c? b nsPec;er arc man ns compxi-~~
cam Pne spry ce Fre:floaUpyal aitl roa~aadaebr s: ,an
be ~recgknbaerved ann ram9veu mrmi9n the(prgv den
2N M ti4FC5$
~ ttea m~C Of aatnwiated wldswnseced when ,ng usable -
amcaye vplu ne nas peen urxup ed (ne dnpfn: or w irs
r an eas~ly'bi beterml 2 i u.ipp hdd rod orK Pe o
~~ - no ure ifie ro f oe sollns pUe and calwbte •re
ur ra~rn~u niswnw ~tfie wagers sprtace:
R v, zumn ieU k can oa usea ro'rem ve the avuimt I sen Y~i &dy°f
xdimenf anQ d bh disposal oP Pik n to iai s ry+pfaly )X ~ ~;~~
peeked n tt~e om manner ~F mmh b s r ceap urs
MaaSh,td`"; ramn mends ttwt alt or ra4 romrned ha '
lla Wed apr dlsp9sed OPln d6CeYdanrBW[h p43)dnl~-SPahE j/
iequ rercielt5: r~~ti `
': v h ~.
her FUrtber Ael'at[s nn rn~ectmxYaRSi ckanout orcavhxes, 4
plarsY Seethe }14Rrater2nce"sEtttan. uvn#utitolmretpe
n4usa5in^
6
SP~alPI C~S301F5
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~~ zsn ti~ I~-) ~s l ~z ~~ quo x-z- a7~ a~s ~+~a ~, '~.
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owaz inn
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" l S 1!3 fi42; 3 h5
i rp.:+n i v
£I n cPplW as rl ,-slm l o
n~>I n rane ns ~o=~e 2 rem ~s aNee!sa e~ mA~nwsa Inroypn nee era
iry YEl PP-e PWaT, lYl (Y IacN/9Mrv: P~ ! l fl~nfv'~ryaj(9<
2)MnPy BI1Wy ara IpI N9 svq Ily ( IR -l r !en
u~b tlon ryvrrtel llovp foo¢li(a 4@ro lM sitt{4@ne9o s/!le-ifs
pTel fn-w db al fnp/q 5 ! rygarn is pllp [aQlol lo[6:.aW ttp(cwl
wa
re n nr loaa„n bn as rma wumr aiauyl ~ flo~pQ+s rm oAly
2~'u 1 a-pNVn awly Jlrf to Aofi oillcWitligO I n0Wp4 ma
ii g IYn h A4 F( g IIY N ab ( 4IDIa~ of
Ix v ue B tlewy9 p sYac v xhln9 ~ m. J t ncel2ntaP tlN , I. w n ep ~4vu9Ned~°
(wend ve or'.jsl =bs ~o aS NVw Aqv ,ili elaNCSIm -:GfU ra o{ta4nva!.ms ..re
I-1 uyoR~eV4:at
etaigiSa qn0 perfonna teGSpec [ caJ9ns et thF sH^em ~tl rPS gn fl9w+'s end
sWra9e wP+eYhs
MAS'ERSRES.
A .~[0(I W821 IYeabYieltl a)'SIB~->Il$~l ItE I(1aeB II901 tl9R3}3EIt5.Y
Pp,Yeirytne [l1~QE)snsneei JChEaiu ry m.9u ¢rl en s
.1 UDPE Material - be 13PC nnara spPizl20 Unfler Ms
~pa[itirngonstm i ba tigh heroi6y, hi9t motecwm tiµe ghr u
rvppi ea hyyt'anu ae:urep ?heplRVE ~naaria Sttail5p~t[W
m ASTM 1133SD`01 W Ih T pMVf11 yell tldS5 pCa*IepYilSCS Gf
9ASa6NC
?dYS1CA4 ~RdPFRTrE~O(i 0l'FCf2MPObND
a) Denny gMe density snailreite Less Cmn055591cnt'as
ererensga n A51 N G vi05 Y
nJ tAaid ande;: tl~meJk ntlezs(!aU be re grga[er 9jar UdS
4(19 tntgares when 1sRri lp acarr~ianca m Fh'AS(M b
1236 Cpndlhon 19P/ZIb. `.
~)Piex Mndulrs flevwal medytus shall he Ai0~U9R io(Ws
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